Imported Upstream version 10.21

62 files changed, 13558 insertions, 6065 deletions

diff --git a/testdata/grepoutput b/testdata/grepoutput
index 883bad7..3f6704c 100644
--- a/testdata/grepoutput
+++ b/testdata/grepoutput
@@ -751,3 +751,7 @@ RC=0
 2:3,1
 2:4,1
 RC=0
+---------------------------- Test 108 ------------------------------
+RC=0
+---------------------------- Test 109 -----------------------------
+RC=0
diff --git a/testdata/testinput1 b/testdata/testinput1
index 884faf1..6d7bc80 100644
--- a/testdata/testinput1
+++ b/testdata/testinput1
@@ -3,12 +3,14 @@
 # 32-bit PCRE libraries, and also using the perltest.pl script.
     
 #forbid_utf
+#newline_default lf any anycrlf
 #perltest
 
 /the quick brown fox/
     the quick brown fox
-    The quick brown FOX
     What do you know about the quick brown fox?
+\= Expect no match
+    The quick brown FOX
     What do you know about THE QUICK BROWN FOX?
 
 /The quick brown fox/i
@@ -51,7 +53,7 @@
     >>>aaabxyzpqrrrabbxyyyypqAzz
     >aaaabxyzpqrrrabbxyyyypqAzz
     >>>>abcxyzpqrrrabbxyyyypqAzz
-    *** Failers
+\= Expect no match
     abxyzpqrrabbxyyyypqAzz
     abxyzpqrrrrabbxyyyypqAzz
     abxyzpqrrrabxyyyypqAzz
@@ -62,7 +64,7 @@
 /^(abc){1,2}zz/
     abczz
     abcabczz
-    *** Failers
+\= Expect no match
     zz
     abcabcabczz
     >>abczz
@@ -76,7 +78,7 @@
     aac
     abbbbbbbbbbbc
     bbbbbbbbbbbac
-    *** Failers
+\= Expect no match
     aaac
     abbbbbbbbbbbac
 
@@ -89,7 +91,7 @@
     aac
     abbbbbbbbbbbc
     bbbbbbbbbbbac
-    *** Failers
+\= Expect no match
     aaac
     abbbbbbbbbbbac
 
@@ -100,7 +102,7 @@
     babc
     bbabc
     bababc
-    *** Failers
+\= Expect no match
     bababbc
     babababc
 
@@ -108,7 +110,7 @@
     babc
     bbabc
     bababc
-    *** Failers
+\= Expect no match
     bababbc
     babababc
 
@@ -122,7 +124,7 @@
     cthing
     dthing
     ething
-    *** Failers
+\= Expect no match
     fthing
     [thing
     \\thing
@@ -132,7 +134,7 @@
     cthing
     dthing
     ething
-    *** Failers
+\= Expect no match
     athing
     fthing
 
@@ -140,7 +142,7 @@
     fthing
     [thing
     \\thing
-    *** Failers
+\= Expect no match
     athing
     bthing
     ]thing
@@ -151,7 +153,7 @@
 /^[^]cde]/
     athing
     fthing
-    *** Failers
+\= Expect no match
     ]thing
     cthing
     dthing
@@ -176,7 +178,7 @@
     9
     10
     100
-    *** Failers
+\= Expect no match
     abc
 
 /^.*nter/
@@ -187,28 +189,28 @@
 /^xxx[0-9]+$/
     xxx0
     xxx1234
-    *** Failers
+\= Expect no match
     xxx
 
 /^.+[0-9][0-9][0-9]$/
     x123
+    x1234
     xx123
     123456
-    *** Failers
+\= Expect no match
     123
-    x1234
 
 /^.+?[0-9][0-9][0-9]$/
     x123
+    x1234
     xx123
     123456
-    *** Failers
+\= Expect no match
     123
-    x1234
 
 /^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/
     abc!pqr=apquxz.ixr.zzz.ac.uk
-    *** Failers
+\= Expect no match
     !pqr=apquxz.ixr.zzz.ac.uk
     abc!=apquxz.ixr.zzz.ac.uk
     abc!pqr=apquxz:ixr.zzz.ac.uk
@@ -216,7 +218,8 @@
 
 /:/
     Well, we need a colon: somewhere
-    *** Fail if we don't
+\= Expect no match
+    Fail without a colon
 
 /([\da-f:]+)$/i
     0abc
@@ -227,7 +230,7 @@
     5f03:12C0::932e
     fed def
     Any old stuff
-    *** Failers
+\= Expect no match
     0zzz
     gzzz
     fed\x20
@@ -236,7 +239,7 @@
 /^.*\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/
     .1.2.3
     A.12.123.0
-    *** Failers
+\= Expect no match
     .1.2.3333
     1.2.3
     1234.2.3
@@ -244,7 +247,7 @@
 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/
     1 IN SOA non-sp1 non-sp2(
     1    IN    SOA    non-sp1    non-sp2   (
-    *** Failers
+\= Expect no match
     1IN SOA non-sp1 non-sp2(
 
 /^[a-zA-Z\d][a-zA-Z\d\-]*(\.[a-zA-Z\d][a-zA-z\d\-]*)*\.$/
@@ -254,7 +257,7 @@
     ab-c.pq-r.
     sxk.zzz.ac.uk.
     x-.y-.
-    *** Failers
+\= Expect no match
     -abc.peq.
 
 /^\*\.[a-z]([a-z\-\d]*[a-z\d]+)?(\.[a-z]([a-z\-\d]*[a-z\d]+)?)*$/
@@ -262,7 +265,7 @@
     *.b0-a
     *.c3-b.c
     *.c-a.b-c
-    *** Failers
+\= Expect no match
     *.0
     *.a-
     *.a-b.c-
@@ -286,29 +289,30 @@
     \"1234\"
     \"abcd\" ;
     \"\" ; rhubarb
-    *** Failers
+\= Expect no match
     \"1234\" : things
 
 /^$/
     \
-    *** Failers
+\= Expect no match
+    A non-empty line
 
 /   ^    a   (?# begins with a)  b\sc (?# then b c) $ (?# then end)/x
     ab c
-    *** Failers
+\= Expect no match
     abc
     ab cde
 
 /(?x)   ^    a   (?# begins with a)  b\sc (?# then b c) $ (?# then end)/
     ab c
-    *** Failers
+\= Expect no match
     abc
     ab cde
 
 /^   a\ b[c ]d       $/x
     a bcd
     a b d
-    *** Failers
+\= Expect no match
     abcd
     ab d
 
@@ -362,7 +366,7 @@
     1234567890
     12345678ab
     12345678__
-    *** Failers
+\= Expect no match
     1234567
 
 /^[aeiou\d]{4,5}$/
@@ -370,7 +374,7 @@
     1234
     12345
     aaaaa
-    *** Failers
+\= Expect no match
     123456
 
 /^[aeiou\d]{4,5}?/
@@ -383,7 +387,7 @@
 /\A(abc|def)=(\1){2,3}\Z/
     abc=abcabc
     def=defdefdef
-    *** Failers
+\= Expect no match
     abc=defdef
 
 /^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/
@@ -402,7 +406,7 @@
 /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/
     From abcd  Mon Sep 01 12:33:02 1997
     From abcd  Mon Sep  1 12:33:02 1997
-    *** Failers
+\= Expect no match
     From abcd  Sep 01 12:33:02 1997
 
 /^12.34/s
@@ -423,7 +427,7 @@
 
 /^(\D*)(?=\d)(?!123)/
     abc456
-    *** Failers
+\= Expect no match
     abc123
 
 /^1234(?# test newlines
@@ -449,12 +453,12 @@
 
 /(?!^)abc/
     the abc
-    *** Failers
+\= Expect no match
     abc
 
 /(?=^)abc/
     abc
-    *** Failers
+\= Expect no match
     the abc
 
 /^[ab]{1,3}(ab*|b)/
@@ -670,7 +674,7 @@
     A. Other <user.1234\@dom.ain> (a comment)
     \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay
     A missing angle <user\@some.where
-    *** Failers
+\= Expect no match
     The quick brown fox
 
 /[\040\t]*                    # Nab whitespace.
@@ -1262,7 +1266,7 @@
     A. Other <user.1234\@dom.ain> (a comment)
     \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay
     A missing angle <user\@some.where
-    *** Failers
+\= Expect no match
     The quick brown fox
 
 /abc\0def\00pqr\000xyz\0000AB/
@@ -1284,14 +1288,14 @@
 /A\x0{2,3}Z/
     The A\x0\x0Z
     An A\0\x0\0Z
-    *** Failers
+\= Expect no match
     A\0Z
     A\0\x0\0\x0Z
 
 /^(cow|)\1(bell)/
     cowcowbell
     bell
-    *** Failers
+\= Expect no match
     cowbell
 
 /^\s/
@@ -1300,7 +1304,7 @@
     \nabc
     \rabc
     \tabc
-    *** Failers
+\= Expect no match
     abc
 
 /^a	b
@@ -1311,27 +1315,27 @@
     ab
     aaaab
     b
-    *** Failers
+\= Expect no match
     acb
 
 /^(a|)\1+b/
     aab
     aaaab
     b
-    *** Failers
+\= Expect no match
     ab
 
 /^(a|)\1?b/
     ab
     aab
     b
-    *** Failers
+\= Expect no match
     acb
 
 /^(a|)\1{2}b/
     aaab
     b
-    *** Failers
+\= Expect no match
     ab
     aab
     aaaab
@@ -1340,7 +1344,7 @@
     aaab
     aaaab
     b
-    *** Failers
+\= Expect no match
     ab
     aab
     aaaaab
@@ -1349,7 +1353,7 @@
     abbbbc
     abbbc
     abbc
-    *** Failers
+\= Expect no match
     abc
     abbbbbc
 
@@ -1364,7 +1368,7 @@
 
 /^[W-c]+$/
     WXY_^abc
-    *** Failers
+\= Expect no match
     wxy
 
 /^[W-c]+$/i
@@ -1383,7 +1387,7 @@
 
 /^abc$/
     abc
-    *** Failers
+\= Expect no match
     qqq\nabc
     abc\nzzz
     qqq\nabc\nzzz
@@ -1391,7 +1395,7 @@
 /\Aabc\Z/m
     abc
     abc\n 
-    *** Failers
+\= Expect no match
     qqq\nabc
     abc\nzzz
     qqq\nabc\nzzz
@@ -1400,7 +1404,7 @@
     abc\ndef
 
 /\A(.)*\Z/m
-    *** Failers
+\= Expect no match
     abc\ndef
 
 /(?:b)|(?::+)/
@@ -1409,17 +1413,17 @@
 
 /[-az]+/
     az-
-    *** Failers
+\= Expect no match
     b
 
 /[az-]+/
     za-
-    *** Failers
+\= Expect no match
     b
 
 /[a\-z]+/
     a-z
-    *** Failers
+\= Expect no match
     b
 
 /[a-z]+/
@@ -1427,12 +1431,12 @@
 
 /[\d-]+/
     12-34
-    *** Failers
+\= Expect no match
     aaa
 
 /[\d-z]+/
     12-34z
-    *** Failers
+\= Expect no match
     aaa
 
 /\x5c/
@@ -1440,7 +1444,7 @@
 
 /\x20Z/
     the Zoo
-    *** Failers
+\= Expect no match
     Zulu
 
 /(abc)\1/i
@@ -1448,22 +1452,10 @@
     ABCabc
     abcABC
 
-/ab{3cd/
-    ab{3cd
-
-/ab{3,cd/
-    ab{3,cd
-
-/ab{3,4a}cd/
-    ab{3,4a}cd
-
-/{4,5a}bc/
-    {4,5a}bc
-
 /abc$/
     abc
     abc\n
-    *** Failers
+\= Expect no match
     abc\ndef
 
 /(abc)\123/
@@ -1492,7 +1484,7 @@
 
 /^[A\8B\9C]+$/
     A8B9C
-    *** Failers 
+\= Expect no match 
     A8B9C\x00
 
 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\12\123/
@@ -1524,7 +1516,7 @@
     baNOTcccd
     baNOTccd
     bacccd
-    *** Failers
+\= Expect no match
     anything
     b\bc   
     baccd
@@ -1546,14 +1538,14 @@
    
 /[^k]$/
     abc
-    *** Failers
+\= Expect no match
     abk   
    
 /[^k]{2,3}$/
     abc
     kbc
     kabc 
-    *** Failers
+\= Expect no match
     abk
     akb
     akk 
@@ -1561,14 +1553,14 @@
 /^\d{8,}\@.+[^k]$/
     12345678\@a.b.c.d
     123456789\@x.y.z
-    *** Failers
+\= Expect no match
     12345678\@x.y.uk
     1234567\@a.b.c.d       
 
 /(a)\1{8,}/
     aaaaaaaaa
     aaaaaaaaaa
-    *** Failers
+\= Expect no match
     aaaaaaa   
 
 /[^a]/
@@ -1604,7 +1596,7 @@
 /(\.\d\d((?=0)|\d(?=\d)))/
     1.230003938      
     1.875000282
-    *** Failers 
+\= Expect no match 
     1.235 
     
 /a(?)b/
@@ -1648,13 +1640,13 @@
      
 /^(\D*)(?=\d)(?!123)/
     ABC445
-    *** Failers
+\= Expect no match
     ABC123
     
 /^[W-]46]/
     W46]789 
     -46]789
-    *** Failers
+\= Expect no match
     Wall
     Zebra
     42
@@ -1670,7 +1662,7 @@
     [abcd] 
     ]abcd[
     \\backslash 
-    *** Failers
+\= Expect no match
     -46]789
     well
     
@@ -1678,11 +1670,13 @@
     01/01/2000
 
 /word (?:[a-zA-Z0-9]+ ){0,10}otherword/
-  word cat dog elephant mussel cow horse canary baboon snake shark otherword
-  word cat dog elephant mussel cow horse canary baboon snake shark
+    word cat dog elephant mussel cow horse canary baboon snake shark otherword
+\= Expect no match
+    word cat dog elephant mussel cow horse canary baboon snake shark
 
 /word (?:[a-zA-Z0-9]+ ){0,300}otherword/
-  word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
+\= Expect no match
+    word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
 
 /^(a){0,0}/
     bcd
@@ -1713,27 +1707,31 @@
     aaaaaaaa    
 
 /^(a){1,1}/
-    bcd
     abc
     aab  
+\= Expect no match
+    bcd
 
 /^(a){1,2}/
-    bcd
     abc
     aab  
+\= Expect no match
+    bcd
 
 /^(a){1,3}/
-    bcd
     abc
     aab
     aaa   
+\= Expect no match
+    bcd
 
 /^(a){1,}/
-    bcd
     abc
     aab
     aaa
     aaaaaaaa    
+\= Expect no match
+    bcd
 
 /.*\.gif/
     borfle\nbib.gif\nno
@@ -1777,7 +1775,7 @@
 /(.*X|^B)/
     abcde\n1234Xyz
     BarFoo 
-    *** Failers
+\= Expect no match
     abcde\nBar  
 
 /(.*X|^B)/m
@@ -1788,7 +1786,7 @@
 /(.*X|^B)/s
     abcde\n1234Xyz
     BarFoo 
-    *** Failers
+\= Expect no match
     abcde\nBar  
 
 /(.*X|^B)/ms
@@ -1799,17 +1797,17 @@
 /(?s)(.*X|^B)/
     abcde\n1234Xyz
     BarFoo 
-    *** Failers 
+\= Expect no match 
     abcde\nBar  
 
 /(?s:.*X|^B)/
     abcde\n1234Xyz
     BarFoo 
-    *** Failers 
+\= Expect no match 
     abcde\nBar  
 
 /^.*B/
-    **** Failers
+\= Expect no match
     abc\nB
      
 /(?s)^.*B/
@@ -1847,34 +1845,34 @@
 
 /^[abcdefghijklmnopqrstuvwxy0123456789]/
     n
-    *** Failers 
+\= Expect no match 
     z 
 
 /abcde{0,0}/
     abcd
-    *** Failers
+\= Expect no match
     abce  
 
 /ab[cd]{0,0}e/
     abe
-    *** Failers
+\= Expect no match
     abcde 
     
 /ab(c){0,0}d/
     abd
-    *** Failers
+\= Expect no match
     abcd   
 
 /a(b*)/
     a
     ab
     abbbb
-    *** Failers
+\= Expect no match
     bbbbb    
     
 /ab\d{0}e/
     abe
-    *** Failers
+\= Expect no match
     ab1e   
     
 /"([^\\"]+|\\.)*"/
@@ -1902,7 +1900,7 @@
     
 /a.b/
     acb
-    *** Failers 
+\= Expect no match 
     a\nb   
     
 /a[^a]b/s
@@ -1928,12 +1926,11 @@
     bbbbbac 
     
 /(?!\A)x/m
+    a\bx\n
+    a\nx\n
+\= Expect no match     
     x\nb\n
-    a\bx\n  
     
-/\x0{ab}/
-    \0{ab} 
-
 /(A|B)*?CD/
     CD 
     
@@ -1951,46 +1948,45 @@
     catfood
     arfootle
     rfoosh
-    *** Failers
+\= Expect no match
     barfoo
     towbarfoo
 
 /\w{3}(?<!bar)foo/
     catfood
-    *** Failers
+\= Expect no match
     foo
     barfoo
     towbarfoo
 
 /(?<=(foo)a)bar/
     fooabar
-    *** Failers
+\= Expect no match
     bar
     foobbar
       
 /\Aabc\z/m
     abc
-    *** Failers
+\= Expect no match
     abc\n   
     qqq\nabc
     abc\nzzz
     qqq\nabc\nzzz
 
 "(?>.*/)foo"
-    /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/
-
-"(?>.*/)foo"
     /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo
+\= Expect no match     
+    /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/
 
 /(?>(\.\d\d[1-9]?))\d+/
     1.230003938
     1.875000282
-    *** Failers 
+\= Expect no match 
     1.235 
 
 /^((?>\w+)|(?>\s+))*$/
     now is the time for all good men to come to the aid of the party
-    *** Failers
+\= Expect no match
     this is not a line with only words and spaces!
     
 /(\d+)(\w)/
@@ -1999,7 +1995,7 @@
 
 /((?>\d+))(\w)/
     12345a
-    *** Failers
+\= Expect no match
     12345+ 
 
 /(?>a+)b/
@@ -2023,32 +2019,32 @@
 /\(((?>[^()]+)|\([^()]+\))+\)/
     (abc)
     (abc(def)xyz)
-    *** Failers
+\= Expect no match
     ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa   
 
 /a(?-i)b/i
     ab
     Ab
-    *** Failers 
+\= Expect no match 
     aB
     AB
         
 /(a (?x)b c)d e/
     a bcd e
-    *** Failers
+\= Expect no match
     a b cd e
     abcd e   
     a bcde 
  
 /(a b(?x)c d (?-x)e f)/
     a bcde f
-    *** Failers
+\= Expect no match
     abcdef  
 
 /(a(?i)b)c/
     abc
     aBc
-    *** Failers
+\= Expect no match
     abC
     aBC  
     Abc
@@ -2059,7 +2055,7 @@
 /a(?i:b)c/
     abc
     aBc
-    *** Failers 
+\= Expect no match 
     ABC
     abC
     aBC
@@ -2067,14 +2063,14 @@
 /a(?i:b)*c/
     aBc
     aBBc
-    *** Failers 
+\= Expect no match 
     aBC
     aBBC
     
 /a(?=b(?i)c)\w\wd/
     abcd
     abCd
-    *** Failers
+\= Expect no match
     aBCd
     abcD     
     
@@ -2082,7 +2078,7 @@
     more than million
     more than MILLION
     more \n than Million 
-    *** Failers
+\= Expect no match
     MORE THAN MILLION    
     more \n than \n million 
 
@@ -2090,7 +2086,7 @@
     more than million
     more than MILLION
     more \n than Million 
-    *** Failers
+\= Expect no match
     MORE THAN MILLION    
     more \n than \n million 
     
@@ -2098,7 +2094,7 @@
     abc
     aBbc
     aBBc 
-    *** Failers
+\= Expect no match
     Abc
     abAb    
     abbC 
@@ -2106,7 +2102,7 @@
 /(?=a(?i)b)\w\wc/
     abc
     aBc
-    *** Failers
+\= Expect no match
     Ab 
     abC
     aBC     
@@ -2114,7 +2110,7 @@
 /(?<=a(?i)b)(\w\w)c/
     abxxc
     aBxxc
-    *** Failers
+\= Expect no match
     Abxxc
     ABxxc
     abxxC      
@@ -2122,7 +2118,7 @@
 /(?:(a)|b)(?(1)A|B)/
     aA
     bB
-    *** Failers
+\= Expect no match
     aB
     bA    
 
@@ -2130,7 +2126,7 @@
     aa
     b
     bb  
-    *** Failers
+\= Expect no match
     ab   
     
 # Perl gets this next one wrong if the pattern ends with $; in that case it
@@ -2140,13 +2136,13 @@
     abc:
     12
     123
-    *** Failers
+\= Expect no match
     xyz    
 
 /^(?(?!abc)\d\d|\w{3}:)$/
     abc:
     12
-    *** Failers
+\= Expect no match
     123
     xyz    
     
@@ -2155,7 +2151,7 @@
     cat
     fcat
     focat   
-    *** Failers
+\= Expect no match
     foocat  
 
 /(?(?<!foo)cat|bar)/
@@ -2163,7 +2159,7 @@
     cat
     fcat
     focat   
-    *** Failers
+\= Expect no match
     foocat  
 
 /( \( )? [^()]+ (?(1) \) |) /x
@@ -2182,7 +2178,7 @@
     12
     12a
     12aa
-    *** Failers
+\= Expect no match
     1234    
 
 /((?i)blah)\s+\1/
@@ -2190,7 +2186,7 @@
     BLAH BLAH
     Blah Blah
     blaH blaH
-    *** Failers
+\= Expect no match
     blah BLAH
     Blah blah      
     blaH blah 
@@ -2270,13 +2266,13 @@
 /(?(?=[^a-z]+[a-z])  \d{2}-[a-z]{3}-\d{2}  |  \d{2}-\d{2}-\d{2} ) /x
     12-sep-98
     12-09-98
-    *** Failers
+\= Expect no match
     sep-12-98
         
 /(?<=(foo))bar\1/
     foobarfoo
     foobarfootling 
-    *** Failers
+\= Expect no match
     foobar
     barfoo   
 
@@ -2294,7 +2290,7 @@
     aBCx
     bbx
     BBx
-    *** Failers
+\= Expect no match
     abcX
     aBCX
     bbX
@@ -2308,7 +2304,7 @@
     Europe 
     frog
     France
-    *** Failers
+\= Expect no match
     Africa     
 
 /^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)/
@@ -2318,13 +2314,13 @@
     xY
     zebra
     Zambesi
-    *** Failers
+\= Expect no match
     aCD  
     XY  
 
 /(?<=foo\n)^bar/m
     foo\nbar
-    *** Failers
+\= Expect no match
     bar
     baz\nbar   
 
@@ -2332,41 +2328,43 @@
     barbaz
     barbarbaz 
     koobarbaz 
-    *** Failers
+\= Expect no match
     baz
     foobarbaz 
 
-/The cases of aaaa and aaaaaa are missed out below because Perl does things/
-/differently. We know that odd, and maybe incorrect, things happen with/
-/recursive references in Perl, as far as 5.11.3 - see some stuff in test #2./
+# The cases of aaaa and aaaaaa are missed out below because Perl does things
+# differently. We know that odd, and maybe incorrect, things happen with
+# recursive references in Perl, as far as 5.11.3 - see some stuff in test #2.
 
 /^(a\1?){4}$/
+    aaaaa
+    aaaaaaa
+    aaaaaaaaaa
+\= Expect no match
     a
     aa
     aaa
-    aaaaa
-    aaaaaaa
     aaaaaaaa
     aaaaaaaaa
-    aaaaaaaaaa
     aaaaaaaaaaa
     aaaaaaaaaaaa
     aaaaaaaaaaaaa
     aaaaaaaaaaaaaa
     aaaaaaaaaaaaaaa
-    aaaaaaaaaaaaaaaa               
+    aaaaaaaaaaaaaaaa
 
 /^(a\1?)(a\1?)(a\2?)(a\3?)$/
-    a
-    aa
-    aaa
     aaaa
     aaaaa
     aaaaaa
     aaaaaaa
+    aaaaaaaaaa
+\= Expect no match
+    a
+    aa
+    aaa
     aaaaaaaa
     aaaaaaaaa
-    aaaaaaaaaa
     aaaaaaaaaaa
     aaaaaaaaaaaa
     aaaaaaaaaaaaa
@@ -2374,14 +2372,14 @@
     aaaaaaaaaaaaaaa
     aaaaaaaaaaaaaaaa               
 
-/The following tests are taken from the Perl 5.005 test suite; some of them/
-/are compatible with 5.004, but I'd rather not have to sort them out./
+# The following tests are taken from the Perl 5.005 test suite; some of them
+# are compatible with 5.004, but I'd rather not have to sort them out.
 
 /abc/
     abc
     xabcy
     ababc
-    *** Failers
+\= Expect no match
     xbc
     axc
     abx
@@ -2405,7 +2403,7 @@
 
 /ab+bc/
     abbc
-    *** Failers
+\= Expect no match
     abc
     abq
 
@@ -2424,7 +2422,7 @@
     abbbbc
 
 /ab{4,5}bc/
-    *** Failers
+\= Expect no match
     abq
     abbbbc
 
@@ -2445,7 +2443,7 @@
 
 /^abc$/
     abc
-    *** Failers
+\= Expect no match
     abbbbc
     abcc
 
@@ -2456,8 +2454,7 @@
 
 /abc$/
     aabc
-    *** Failers
-    aabc
+\= Expect no match
     aabcd
 
 /^/
@@ -2475,7 +2472,7 @@
 
 /a[bc]d/
     abd
-    *** Failers
+\= Expect no match
     axyzd
     abc
 
@@ -2499,7 +2496,7 @@
 
 /a[^bc]d/
     aed
-    *** Failers
+\= Expect no match
     abd
     abd
 
@@ -2508,8 +2505,8 @@
 
 /a[^]b]c/
     adc
-    *** Failers
     a-c
+\= Expect no match
     a]c
 
 /\ba\b/
@@ -2518,13 +2515,13 @@
     -a-
 
 /\by\b/
-    *** Failers
+\= Expect no match
     xy
     yz
     xyz
 
 /\Ba\B/
-    *** Failers
+\= Expect no match
     a-
     -a
     -a-
@@ -2543,8 +2540,7 @@
 
 /\W/
     -
-    *** Failers
-    -
+\= Expect no match
     a
 
 /a\sb/
@@ -2552,8 +2548,7 @@
 
 /a\Sb/
     a-b
-    *** Failers
-    a-b
+\= Expect no match
     a b
 
 /\d/
@@ -2561,8 +2556,7 @@
 
 /\D/
     -
-    *** Failers
-    -
+\= Expect no match
     1
 
 /[\w]/
@@ -2570,8 +2564,7 @@
 
 /[\W]/
     -
-    *** Failers
-    -
+\= Expect no match
     a
 
 /a[\s]b/
@@ -2579,8 +2572,7 @@
 
 /a[\S]b/
     a-b
-    *** Failers
-    a-b
+\= Expect no match
     a b
 
 /[\d]/
@@ -2588,8 +2580,7 @@
 
 /[\D]/
     -
-    *** Failers
-    -
+\= Expect no match
     1
 
 /ab|cd/
@@ -2648,12 +2639,11 @@
     cde
 
 /abc/
-    *** Failers
+\= Expect no match
     b
-    
 
 /a*/
-    
+    \
 
 /([abc])*d/
     abbbcd
@@ -2707,7 +2697,7 @@
     adcdcde
 
 /a[bcd]+dcdcde/
-    *** Failers
+\= Expect no match
     abcde
     adcdcde
 
@@ -2727,7 +2717,7 @@
     effgz
     ij
     reffgz
-    *** Failers
+\= Expect no match
     effg
     bcdd
 
@@ -2741,7 +2731,7 @@
     a
 
 /multiple words of text/
-    *** Failers
+\= Expect no match
     aa
     uh-uh
 
@@ -2773,8 +2763,8 @@
 
 /(a)|\1/
     a
-    *** Failers
     ab
+\= Expect no match
     x
 
 /(([a-c])b*?\2)*/
@@ -2793,7 +2783,7 @@
     ABC
     XABCY
     ABABC
-    *** Failers
+\= Expect no match
     aaxabxbaxbbx
     XBC
     AXC
@@ -2816,7 +2806,7 @@
     ABBC
 
 /ab+bc/i
-    *** Failers
+\= Expect no match
     ABC
     ABQ
 
@@ -2835,7 +2825,7 @@
     ABBBBC
 
 /ab{4,5}?bc/i
-    *** Failers
+\= Expect no match
     ABQ
     ABBBBC
 
@@ -2856,7 +2846,7 @@
 
 /^abc$/i
     ABC
-    *** Failers
+\= Expect no match
     ABBBBC
     ABCC
 
@@ -2882,8 +2872,8 @@
     AXYZC
 
 /a.*c/i
-    *** Failers
     AABC
+\= Expect no match
     AXYZD
 
 /a[bc]d/i
@@ -2891,7 +2881,7 @@
 
 /a[b-d]e/i
     ACE
-    *** Failers
+\= Expect no match
     ABC
     ABD
 
@@ -2915,7 +2905,7 @@
 
 /a[^-b]c/i
     ADC
-    *** Failers
+\= Expect no match
     ABD
     A-C
 
@@ -2930,7 +2920,7 @@
     DEF
 
 /$b/i
-    *** Failers
+\= Expect no match
     A]C
     B
 
@@ -2990,11 +2980,6 @@
 /[^ab]*/i
     CDE
 
-/abc/i
-
-/a*/i
-    
-
 /([abc])*d/i
     ABBBCD
 
@@ -3021,6 +3006,7 @@
     HIJ
 
 /^(ab|cd)e/i
+\= Expect no match
     ABCDE
 
 /(abc|)ef/i
@@ -3065,7 +3051,7 @@
     EFFGZ
     IJ
     REFFGZ
-    *** Failers
+\= Expect no match
     ADCDCDE
     EFFG
     BCDD
@@ -3086,7 +3072,7 @@
     C
 
 /multiple words of text/i
-    *** Failers
+\= Expect no match
     AA
     UH-UH
 
@@ -3182,14 +3168,14 @@
 
 /^(a\1?){4}$/
     aaaaaaaaaa
-    *** Failers
+\= Expect no match
     AB
     aaaaaaaaa
     aaaaaaaaaaa
 
 /^(a(?(1)\1)){4}$/
     aaaaaaaaaa
-    *** Failers
+\= Expect no match
     aaaaaaaaa
     aaaaaaaaaaa
 
@@ -3198,7 +3184,7 @@
 
 /(?<=a)b/
     ab
-    *** Failers
+\= Expect no match
     cb
     b
 
@@ -3247,7 +3233,7 @@
     Ab
 
 /(?:(?i)a)b/
-    *** Failers
+\= Expect no match
     cb
     aB
 
@@ -3266,7 +3252,7 @@
     Ab
 
 /(?i:a)b/
-    *** Failers
+\= Expect no match
     aB
     aB
 
@@ -3285,25 +3271,11 @@
     aB
 
 /(?:(?-i)a)b/i
-    *** Failers
-    aB
-    Ab
-
-/((?-i)a)b/i
-
-/(?:(?-i)a)b/i
-    aB
-
-/((?-i)a)b/i
     aB
-
-/(?:(?-i)a)b/i
-    *** Failers
+\= Expect no match
     Ab
     AB
 
-/((?-i)a)b/i
-
 /(?-i:a)b/i
     ab
 
@@ -3317,7 +3289,7 @@
     aB
 
 /(?-i:a)b/i
-    *** Failers
+\= Expect no match
     AB
     Ab
 
@@ -3330,14 +3302,14 @@
     aB
 
 /(?-i:a)b/i
-    *** Failers
+\= Expect no match
     Ab
     AB
 
 /((?-i:a))b/i
 
 /((?-i:a.))b/i
-    *** Failers
+\= Expect no match
     AB
     a\nB
 
@@ -3367,7 +3339,7 @@
     aaac
 
 /(?<![cd])b/
-    *** Failers
+\= Expect no match
     B\nB
     dbcb
 
@@ -3387,7 +3359,7 @@
     a
     ab
     aaa   
-    *** Failers
+\= Expect no match
     dbcb
     a--
     aa-- 
@@ -3421,7 +3393,7 @@
 /^b/
 
 /()^b/
-    *** Failers
+\= Expect no match
     a\nb\nc\n
     a\nb\nc\n
 
@@ -3429,7 +3401,7 @@
     a\nb\nc\n
 
 /(x)?(?(1)a|b)/
-    *** Failers
+\= Expect no match
     a
     a
 
@@ -3447,7 +3419,7 @@
 /^(\()?blah(?(1)(\)))$/
     (blah)
     blah
-    *** Failers
+\= Expect no match
     a
     blah)
     (blah
@@ -3455,7 +3427,7 @@
 /^(\(+)?blah(?(1)(\)))$/
     (blah)
     blah
-    *** Failers
+\= Expect no match
     blah)
     (blah
 
@@ -3465,7 +3437,7 @@
     a
 
 /(?(?=a)b|a)/
-    *** Failers
+\= Expect no match
     a
     a
 
@@ -3487,7 +3459,7 @@
     aaab
 
 /^(?=(a+?))\1ab/
-    *** Failers
+\= Expect no match
     aaab
     aaab
 
@@ -3504,7 +3476,7 @@
 /([\w:]+::)?(\w+)$/
     abcd
     xy:z:::abcd
-    *** Failers
+\= Expect no match
     abcd:
     abcd:
 
@@ -3535,7 +3507,7 @@
     ((abc(ade)ufh()()x
 
 /a\Z/
-    *** Failers
+\= Expect no match
     aaab
     a\nb\n
 
@@ -3549,7 +3521,6 @@
 
 /b\z/
     a\nb
-    *** Failers
     
 /^(?>(?(1)\.|())[^\W_](?>[a-z0-9-]*[^\W_])?)+$/
     a
@@ -3561,7 +3532,7 @@
     the.quick.brown.fox
     a100.b200.300c  
     12-ab.1245 
-    *** Failers
+\= Expect no match
     \
     .a
     -a
@@ -3579,38 +3550,40 @@
 /(?>.*)(?<=(abcd|wxyz))/
     alphabetabcd
     endingwxyz
-    *** Failers
+\= Expect no match
     a rather long string that doesn't end with one of them
 
 /word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/
     word cat dog elephant mussel cow horse canary baboon snake shark otherword
+\= Expect no match
     word cat dog elephant mussel cow horse canary baboon snake shark
   
 /word (?>[a-zA-Z0-9]+ ){0,30}otherword/
+\= Expect no match
     word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
 
 /(?<=\d{3}(?!999))foo/
     999foo
     123999foo 
-    *** Failers
+\= Expect no match
     123abcfoo
     
 /(?<=(?!...999)\d{3})foo/
     999foo
     123999foo 
-    *** Failers
+\= Expect no match
     123abcfoo
 
 /(?<=\d{3}(?!999)...)foo/
     123abcfoo
     123456foo 
-    *** Failers
+\= Expect no match
     123999foo  
     
 /(?<=\d{3}...)(?<!999)foo/
     123abcfoo   
     123456foo 
-    *** Failers
+\= Expect no match
     123999foo  
 
 /<a[\s]+href[\s]*=[\s]*          # find <a href=
@@ -3662,7 +3635,7 @@
     abcde
     -things
     0digit
-    *** Failers
+\= Expect no match
     bcdef    
     
 /[[:space:]]+/
@@ -3681,10 +3654,11 @@
     ab
 
 /(?!\A)x/m
-  a\nxb\n
+    a\nxb\n
 
 /(?!^)x/m
-  a\nxb\n
+\= Expect no match
+    a\nxb\n
 
 /abc\Qabc\Eabc/
     abcabcabc
@@ -3694,7 +3668,7 @@
 
 /   abc\Q abc\Eabc/x
     abc abcabc
-    *** Failers
+\= Expect no match
     abcabcabc  
     
 /abc#comment
@@ -3726,7 +3700,7 @@
 
 /\Gabc/
     abc
-    *** Failers
+\= Expect no match
     xyzabc  
 
 /\Gabc./g
@@ -3737,7 +3711,7 @@
 
 /a(?x: b c )d/
     XabcdY
-    *** Failers 
+\= Expect no match 
     Xa b c d Y 
 
 /((?x)x y z | a b c)/
@@ -3746,13 +3720,13 @@
 
 /(?i)AB(?-i)C/
     XabCY
-    *** Failers
+\= Expect no match
     XabcY  
 
 /((?i)AB(?-i)C|D)E/
     abCE
     DE
-    *** Failers
+\= Expect no match
     abcE
     abCe  
     dE
@@ -3789,7 +3763,7 @@
     a123:ddde:b342::324e:abcd
     a123:ddde:b342::324e:dcba:abcd
     a123:ddde:9999:b342::324e:dcba:abcd
-    *** Failers
+\= Expect no match
     1:2:3:4:5:6:7:8
     a123:bce:ddde:9999:b342::324e:dcba:abcd
     a123::9999:b342::324e:dcba:abcd
@@ -3805,10 +3779,11 @@
     -
     d
     ] 
-    *** Failers
+\= Expect no match
     b     
 
 /(a+)*b/
+\= Expect no match
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 
     
 /(?i)reg(?:ul(?:[a�]|ae)r|ex)/
@@ -3831,22 +3806,22 @@
 
 /ab cd(?x) de fg/
     ab cddefg
-    ** Failers 
+\= Expect no match 
     abcddefg
 
 /(?<![^f]oo)(bar)/
     foobarX 
-    ** Failers 
+\= Expect no match 
     boobarX
 
 /(?<![^f])X/
     offX
-    ** Failers
+\= Expect no match
     onyX  
 
 /(?<=[^f])X/
     onyX
-    ** Failers
+\= Expect no match
     offX 
 
 /^/gm
@@ -3876,12 +3851,12 @@
     
 "(?x)(?-x: \s*#\s*)"
     A # B
-    ** Failers
+\= Expect no match
     #  
 
 "(?x-is)(?:(?-ixs) \s*#\s*) include"
     A #include
-    ** Failers
+\= Expect no match
     A#include  
     A #Include
 
@@ -3933,24 +3908,24 @@
     
 /^[\Eabc]/
     a
-    ** Failers 
+\= Expect no match 
     E 
     
 /^[a-\Ec]/
     b
-    ** Failers
+\= Expect no match
     -
     E    
 
 /^[a\E\E-\Ec]/
     b
-    ** Failers
+\= Expect no match
     -
     E    
 
 /^[\E\Qa\E-\Qz\E]+/
     b
-    ** Failers
+\= Expect no match
     -  
     
 /^[a\Q]bc\E]/
@@ -3980,30 +3955,36 @@
     D  
 
 /(a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /(?>a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /(?:a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /\Z/g
   abc\n
   
 /^(?s)(?>.*)(?<!\n)/
   abc
+\= Expect no match
   abc\n  
 
 /^(?![^\n]*\n\z)/
   abc
+\= Expect no match
   abc\n 
   
 /\z(?<!\n)/
   abc
+\= Expect no match
   abc\n  
 
 /(.*(.)?)*/
@@ -4030,6 +4011,7 @@
     p    
 
 /.*[op][xyz]/
+\= Expect no match
     fooabcfoo
 
 /(?(?=.*b)b|^)/
@@ -4038,6 +4020,7 @@
 
 /(?(?=^.*b)b|^)/
    adc
+\= Expect no match
    abc 
 
 /(?(?=.*b)b|^)*/
@@ -4061,16 +4044,18 @@
     XabX
     XAbX
     CcC 
-    ** Failers
+\= Expect no match
     XABX   
 
 /[\x00-\xff\s]+/
     \x0a\x0b\x0c\x0d
 
 /(abc)\1/i
+\= Expect no match
    abc
 
 /(abc)\1/
+\= Expect no match
    abc
 
 /[^a]*/i
@@ -4082,12 +4067,12 @@
     12ABC
 
 /[^a]*?X/i
-    ** Failers
+\= Expect no match
     12abc
     12ABC
     
 /[^a]+?X/i
-    ** Failers
+\= Expect no match
     12abc
     12ABC
 
@@ -4155,9 +4140,11 @@
     aaaabaaabaabab
 
 /(?>a+|ab)+?c/
+\= Expect no match
     aabc
 
 /(?>a+|ab)+c/
+\= Expect no match
     aabc
 
 /(?:a+|ab)+c/
@@ -4170,9 +4157,11 @@
     ab
 
 /^(?:a|ab)++c/
+\= Expect no match
     aaaabc
 
 /^(?>a|ab)++c/
+\= Expect no match
     aaaabc
 
 /^(?:a|ab)+c/
@@ -4180,24 +4169,24 @@
 
 /(?=abc){3}abc/aftertext
     abcabcabc
-    ** Failers
+\= Expect no match
     xyz  
     
 /(?=abc)+abc/aftertext
     abcabcabc
-    ** Failers
+\= Expect no match
     xyz  
     
 /(?=abc)++abc/aftertext
     abcabcabc
-    ** Failers
+\= Expect no match
     xyz  
     
 /(?=abc){0}xyz/
     xyz 
 
 /(?=abc){1}xyz/
-    ** Failers
+\= Expect no match
     xyz 
     
 /(?=(a))?./
@@ -4221,7 +4210,7 @@
 
 /^[\g<a>]+/
     ggg<<<aaa>>>
-    ** Failers
+\= Expect no match
     \\ga  
     
 /^[\ga]+/
@@ -4238,12 +4227,12 @@
      
 /(?<=a{2})b/i
     xaabc
-    ** Failers
+\= Expect no match
     xabc  
 
 /(?<!a{2})b/i
     xabc
-    ** Failers
+\= Expect no match
     xaabc  
 
 /(?<=a\h)c/
@@ -4252,12 +4241,12 @@
 /(?<=[^a]{2})b/
     axxbc
     aAAbc 
-    ** Failers
+\= Expect no match
     xaabc    
 
 /(?<=[^a]{2})b/i
     axxbc  
-    ** Failers
+\= Expect no match
     aAAbc 
     xaabc    
 
@@ -4278,35 +4267,29 @@
 
 /^(a{2,3}){2,}+a/
     aaaaaaa
-    ** Failers
+\= Expect no match
     aaaaaa
     aaaaaaaaa 
 
 /^(a{2,3})++a/
-    ** Failers
+\= Expect no match
     aaaaaa
 
 /^(a{2,3})*+a/
-    ** Failers
+\= Expect no match
     aaaaaa
 
-/ab\Cde/
-    abXde
-    
-/(?<=ab\Cde)X/
-    abZdeX
-
 /\H\h\V\v/
     X X\x0a
     X\x09X\x0b
-    ** Failers
+\= Expect no match
     \xa0 X\x0a   
     
 /\H*\h+\V?\v{3,4}/
     \x09\x20\xa0X\x0a\x0b\x0c\x0d\x0a
     \x09\x20\xa0\x0a\x0b\x0c\x0d\x0a
     \x09\x20\xa0\x0a\x0b\x0c
-    ** Failers 
+\= Expect no match 
     \x09\x20\xa0\x0a\x0b
      
 /\H{3,4}/
@@ -4319,7 +4302,7 @@
 /\h*X\h?\H+Y\H?Z/
     >XNNNYZ
     >  X NYQZ
-    ** Failers
+\= Expect no match
     >XYZ   
     >  X NY Z
 
@@ -4348,10 +4331,10 @@
     
 /^abc\K/aftertext
     abcdef
-    ** Failers
+\= Expect no match
     defabcxyz   
 
-/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/
+/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-2}Z/
     ababababbbabZXXXX
 
 /(?<A>tom|bon)-\g{A}/
@@ -4359,19 +4342,20 @@
     bon-bon 
     
 /(^(a|b\g{-1}))/
+\= Expect no match
     bacxxx
 
 /(?|(abc)|(xyz))\1/
     abcabc
     xyzxyz 
-    ** Failers
+\= Expect no match
     abcxyz
     xyzabc   
     
 /(?|(abc)|(xyz))(?1)/
     abcabc
     xyzabc 
-    ** Failers 
+\= Expect no match 
     xyzxyz 
  
 /^X(?5)(a)(?|(b)|(q))(c)(d)(Y)/
@@ -4386,14 +4370,14 @@
 /(?'abc'\w+):\k<abc>{2}/
     a:aaxyz
     ab:ababxyz
-    ** Failers
+\= Expect no match
     a:axyz
     ab:abxyz
 
 /(?'abc'\w+):\g{abc}{2}/
     a:aaxyz
     ab:ababxyz
-    ** Failers
+\= Expect no match
     a:axyz
     ab:abxyz
 
@@ -4421,7 +4405,7 @@
     1.2.3.4
     131.111.10.206
     10.0.0.0
-    ** Failers
+\= Expect no match
     10.6
     455.3.4.5
 
@@ -4429,18 +4413,18 @@
     1.2.3.4
     131.111.10.206
     10.0.0.0
-    ** Failers
+\= Expect no match
     10.6
     455.3.4.5
 
 /^(\w++|\s++)*$/
     now is the time for all good men to come to the aid of the party
-    *** Failers
+\= Expect no match
     this is not a line with only words and spaces!
 
 /(\d++)(\w)/
     12345a
-    *** Failers
+\= Expect no match
     12345+
 
 /a++b/
@@ -4458,14 +4442,14 @@
 /\(([^()]++|\([^()]+\))+\)/
     (abc)
     (abc(def)xyz)
-    *** Failers
+\= Expect no match
     ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /^([^()]|\((?1)*\))*$/
     abc
     a(b)c
     a(b(c))d
-    *** Failers)
+\= Expect no match)
     a(b(c)d
 
 /^>abc>([^()]|\((?1)*\))*<xyz<$/
@@ -4478,20 +4462,20 @@
     Satanoscillatemymetallicsonatas
     AmanaplanacanalPanama
     AblewasIereIsawElba
-    *** Failers
+\= Expect no match
     Thequickbrownfox
 
 /^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/
     12
     (((2+2)*-3)-7)
     -12
-    *** Failers
+\= Expect no match
     ((2+2)*-3)-7)
 
 /^(x(y|(?1){2})z)/
     xyz
     xxyzxyzz
-    *** Failers
+\= Expect no match
     xxyzz
     xxyzxyzxyzz
 
@@ -4502,22 +4486,27 @@
     <abc <def> hij>
     <abc<>def>
     <abc<>
-    *** Failers
+\= Expect no match
     <abc
 
 /^a+(*FAIL)/
+\= Expect no match
     aaaaaa
     
 /a+b?c+(*FAIL)/
+\= Expect no match
     aaabccc
 
 /a+b?(*PRUNE)c+(*FAIL)/
+\= Expect no match
     aaabccc
 
 /a+b?(*COMMIT)c+(*FAIL)/
+\= Expect no match
     aaabccc
     
 /a+b?(*SKIP)c+(*FAIL)/
+\= Expect no match
     aaabcccaaabccc
 
 /^(?:aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/
@@ -4539,6 +4528,7 @@
     dddddddd   
 
 /a+b?(*THEN)c+(*FAIL)/
+\= Expect no match
     aaabccc
 
 /(A (A|B(*ACCEPT)|C) D)(E)/x
@@ -4546,7 +4536,7 @@
     ABX
     AADE
     ACDE
-    ** Failers
+\= Expect no match
     AD 
         
 /^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i
@@ -4554,7 +4544,7 @@
     Satan, oscillate my metallic sonatas!
     A man, a plan, a canal: Panama!
     Able was I ere I saw Elba.
-    *** Failers
+\= Expect no match
     The quick brown fox
 
 /^((.)(?1)\2|.)$/
@@ -4564,17 +4554,18 @@
     abcdcba 
     pqaabaaqp  
     ablewasiereisawelba
+\= Expect no match     
     rhubarb
     the quick brown fox  
 
 /(a)(?<=b(?1))/
     baz
-    ** Failers
+\= Expect no match
     caz  
     
 /(?<=b(?1))(a)/
     zbaaz
-    ** Failers
+\= Expect no match
     aaa  
     
 /(?<X>a)(?<=b(?&X))/
@@ -4583,33 +4574,33 @@
 /^(?|(abc)|(def))\1/
     abcabc
     defdef 
-    ** Failers
+\= Expect no match
     abcdef
     defabc   
     
 /^(?|(abc)|(def))(?1)/
     abcabc
     defabc
-    ** Failers
+\= Expect no match
     defdef
     abcdef    
 
 /(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) |b(?<quote> (?<apostrophe>')|(?<realquote>")) ) (?('quote')[a-z]+|[0-9]+)/x,dupnames
     a\"aaaaa
     b\"aaaaa 
-    ** Failers 
+\= Expect no match 
     b\"11111
 
 /(?:(?1)|B)(A(*F)|C)/
     ABCD
     CCD
-    ** Failers
+\= Expect no match
     CAD   
 
 /^(?:(?1)|B)(A(*F)|C)/
     CCD
     BCD 
-    ** Failers
+\= Expect no match
     ABCD
     CAD
     BAD    
@@ -4620,7 +4611,7 @@
     BAD
     BCD
     BAX  
-    ** Failers
+\= Expect no match
     ACX
     ABC   
 
@@ -4634,12 +4625,12 @@
     (ab(cd)ef)
 
 /^(?=a(*SKIP)b|ac)/
-    ** Failers
+\= Expect no match
     ac
     
 /^(?=a(*PRUNE)b)/
     ab  
-    ** Failers 
+\= Expect no match 
     ac
 
 /^(?=a(*ACCEPT)b)/
@@ -4682,27 +4673,31 @@
 # I think is a Perl bug.
 
 /A(*COMMIT)(B|D)/
+\= Expect no match
     ACABX
 
 # Check the use of names for failure
 
 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark
-    ** Failers
+\= Expect no match
     AC
     CB    
     
 /(*MARK:A)(*SKIP:B)(C|X)/mark
     C
+\= Expect no match
     D
      
 /^(A(*THEN:A)B|C(*THEN:B)D)/mark
-    ** Failers
+\= Expect no match
     CB    
 
 /^(?:A(*THEN:A)B|C(*THEN:B)D)/mark
+\= Expect no match
     CB    
     
 /^(?>A(*THEN:A)B|C(*THEN:B)D)/mark
+\= Expect no match
     CB    
     
 # This should succeed, as the skip causes bump to offset 1 (the mark). Note
@@ -4724,6 +4719,7 @@
     AAAC
 
 /(*:A)A+(*SKIP:A)(B|Z)/mark
+\= Expect no match
     AAAC
 
 # This should succeed, as a non-existent skip name disables the skip.
@@ -4739,7 +4735,7 @@
 
 /(*COMMIT)(A|P)(B|P)(C|P)/
     ABCDEFG
-    ** Failers
+\= Expect no match
     DEFGABC  
 
 # COMMIT inside an atomic group can't stop backtracking over the group.
@@ -4748,6 +4744,7 @@
     abbb
 
 /(\w+)b(*COMMIT)\w{2}/
+\= Expect no match
     abbb
 
 # Check opening parens in comment when seeking forward reference.
@@ -4758,9 +4755,11 @@
 # COMMIT should override THEN.
 
 /(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?/
+\= Expect no match
   yes
 
 /(?>(*COMMIT)(yes|no)(*THEN)(*F))?/
+\= Expect no match
   yes
 
 /b?(*SKIP)c/
@@ -4768,9 +4767,11 @@
     abc
    
 /(*SKIP)bc/
+\= Expect no match
     a
 
 /(*SKIP)b/
+\= Expect no match
     a 
 
 /(?P<abn>(?P=abn)xxx|)+/
@@ -4779,7 +4780,7 @@
 /(?i:([^b]))(?1)/
     aa
     aA     
-    ** Failers
+\= Expect no match
     ab
     aB
     Ba
@@ -4787,7 +4788,7 @@
 
 /^(?&t)*+(?(DEFINE)(?<t>a))\w$/
     aaaaaaX
-    ** Failers 
+\= Expect no match 
     aaaaaa 
 
 /^(?&t)*(?(DEFINE)(?<t>a))\w$/
@@ -4797,24 +4798,24 @@
 /^(a)*+(\w)/
     aaaaX
     YZ 
-    ** Failers 
+\= Expect no match 
     aaaa
 
 /^(?:a)*+(\w)/
     aaaaX
     YZ 
-    ** Failers 
+\= Expect no match 
     aaaa
 
 /^(a)++(\w)/
     aaaaX
-    ** Failers 
+\= Expect no match 
     aaaa
     YZ 
 
 /^(?:a)++(\w)/
     aaaaX
-    ** Failers 
+\= Expect no match 
     aaaa
     YZ 
 
@@ -4828,13 +4829,13 @@
 
 /^(a){2,}+(\w)/
     aaaaX
-    ** Failers
+\= Expect no match
     aaa
     YZ 
 
 /^(?:a){2,}+(\w)/
     aaaaX
-    ** Failers
+\= Expect no match
     aaa
     YZ 
 
@@ -4844,12 +4845,12 @@
     aab  
 
 /(a)++(?1)b/
-    ** Failers
+\= Expect no match
     ab 
     aab
 
 /(a)*+(?1)b/
-    ** Failers
+\= Expect no match
     ab
     aab  
 
@@ -4884,6 +4885,7 @@
     aaaab
     
 /^(a)(?1)++ab/
+\= Expect no match
     aaaab
 
 /^(?=a(*:M))aZ/mark
@@ -4933,6 +4935,7 @@ name)/mark
 # Capture
 
 /^.*? (a(*THEN)b) c/x
+\= Expect no match
     aabc
 
 /^.*? (a(*THEN)b|(*F)) c/x
@@ -4942,11 +4945,13 @@ name)/mark
     aabc
 
 /^.*? ( (a(*THEN)b) ) c/x
+\= Expect no match
     aabc
 
 # Non-capture
 
 /^.*? (?:a(*THEN)b) c/x
+\= Expect no match
     aabc
 
 /^.*? (?:a(*THEN)b|(*F)) c/x
@@ -4956,11 +4961,13 @@ name)/mark
     aabc
 
 /^.*? (?: (?:a(*THEN)b) ) c/x
+\= Expect no match
     aabc
 
 # Atomic
 
 /^.*? (?>a(*THEN)b) c/x
+\= Expect no match
     aabc
 
 /^.*? (?>a(*THEN)b|(*F)) c/x
@@ -4970,11 +4977,13 @@ name)/mark
     aabc
 
 /^.*? (?> (?>a(*THEN)b) ) c/x
+\= Expect no match
     aabc
 
 # Possessive capture
 
 /^.*? (a(*THEN)b)++ c/x
+\= Expect no match
     aabc
 
 /^.*? (a(*THEN)b|(*F))++ c/x
@@ -4984,11 +4993,13 @@ name)/mark
     aabc
 
 /^.*? ( (a(*THEN)b)++ )++ c/x
+\= Expect no match
     aabc
 
 # Possessive non-capture
 
 /^.*? (?:a(*THEN)b)++ c/x
+\= Expect no match
     aabc
 
 /^.*? (?:a(*THEN)b|(*F))++ c/x
@@ -4998,6 +5009,7 @@ name)/mark
     aabc
 
 /^.*? (?: (?:a(*THEN)b)++ )++ c/x
+\= Expect no match
     aabc
     
 # Condition assertion
@@ -5008,12 +5020,14 @@ name)/mark
 # Condition
 
 /^.*?(?(?=a)a|b(*THEN)c)/
+\= Expect no match
     ba
 
 /^.*?(?:(?(?=a)a|b(*THEN)c)|d)/
     ba
 
 /^.*?(?(?=a)a(*THEN)b|c)/
+\= Expect no match
     ac
 
 # Assertion
@@ -5037,7 +5051,7 @@ name)/mark
 
 /(?<=(a(*COMMIT)b))c/
     xabcd
-    ** Failers 
+\= Expect no match 
     xacd
     
 /(?<!a(*FAIL)b)c/
@@ -5061,40 +5075,49 @@ name)/mark
 
 /(*MARK:A)(*PRUNE:B)(C|X)/mark
     C
+\= Expect no match
     D 
 
 /(*MARK:A)(*PRUNE:B)(C|X)/mark
     C
+\= Expect no match
     D 
 
 /(*MARK:A)(*THEN:B)(C|X)/mark
     C
+\= Expect no match
     D 
 
 /(*MARK:A)(*THEN:B)(C|X)/mark,no_start_optimize
     C
+\= Expect no match
     D 
 
 /(*MARK:A)(*THEN:B)(C|X)/mark
     C
+\= Expect no match
     D 
 
 # This should fail, as the skip causes a bump to offset 3 (the skip).
 
 /A(*MARK:A)A+(*SKIP)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 
 # Same 
 
 /A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 
 /A(*:A)A+(*SKIP)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 
 # This should fail, as a null name is the same as no name.
 
 /A(*MARK:A)A+(*SKIP:)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 
 # A check on what happens after hitting a mark and them bumping along to
@@ -5105,7 +5128,7 @@ name)/mark
 /A(*:A)B|XX(*:B)Y/mark
     AABC
     XXYZ 
-    ** Failers
+\= Expect no match
     XAQQ  
     XAQQXZZ  
     AXQQQ 
@@ -5114,14 +5137,14 @@ name)/mark
 /^(A(*THEN:A)B|C(*THEN:B)D)/mark
     AB
     CD
-    ** Failers
+\= Expect no match
     AC
     CB    
     
 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark
     AB
     CD
-    ** Failers
+\= Expect no match
     AC
     CB    
     
@@ -5145,12 +5168,12 @@ name)/mark
     
 /b(*:m)f|a(*:n)w/mark
     aw 
-    ** Failers 
+\= Expect no match 
     abc
 
 /b(*:m)f|aw/mark
     abaw
-    ** Failers 
+\= Expect no match 
     abc
     abax 
 
@@ -5158,47 +5181,48 @@ name)/mark
     AAAC
 
 /a(*PRUNE:X)bc|qq/mark,no_start_optimize
-    ** Failers
+\= Expect no match
     axy
 
 /a(*THEN:X)bc|qq/mark,no_start_optimize
-    ** Failers
+\= Expect no match
     axy
 
 /(?=a(*MARK:A)b)..x/mark
     abxy
-    ** Failers
+\= Expect no match
     abpq  
 
 /(?=a(*MARK:A)b)..(*:Y)x/mark
     abxy
-    ** Failers
+\= Expect no match
     abpq  
 
 /(?=a(*PRUNE:A)b)..x/mark
     abxy
-    ** Failers
+\= Expect no match
     abpq  
 
 /(?=a(*PRUNE:A)b)..(*:Y)x/mark
     abxy
-    ** Failers
+\= Expect no match
     abpq  
 
 /(?=a(*THEN:A)b)..x/mark
     abxy
-    ** Failers
+\= Expect no match
     abpq  
 
 /(?=a(*THEN:A)b)..(*:Y)x/mark
     abxy
-    ** Failers
+\= Expect no match
     abpq  
 
 /(another)?(\1?)test/
     hello world test
 
 /(another)?(\1+)test/
+\= Expect no match
     hello world test
 
 /(a(*COMMIT)b){0}a(?1)|aac/
@@ -5216,18 +5240,6 @@ name)/mark
 /(?:.*?a)(?<=ba)/
     aba
 
-/.*?a(*PRUNE)b/
-    aab
-
-/.*?a(*PRUNE)b/s
-    aab
-
-/^a(*PRUNE)b/s
-    aab
-
-/.*?a(*SKIP)b/
-    aab
-
 /(?>.*?a)b/s
     aab
 
@@ -5235,6 +5247,7 @@ name)/mark
     aab
 
 /(?>^a)b/s
+\= Expect no match
     aab
 
 /(?>.*?)(?<=(abcd)|(wxyz))/
@@ -5246,6 +5259,7 @@ name)/mark
     endingwxyz 
 
 "(?>.*)foo"
+\= Expect no match
     abcdfooxyz
     
 "(?>.*?)foo"
@@ -5258,6 +5272,7 @@ name)/mark
     ac 
 
 /(?<=(*SKIP)ac)a/
+\= Expect no match
     aa
 
 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark
@@ -5331,6 +5346,7 @@ name)/mark
 # This gives "no match", as expected. 
 
 /aaaaa(*COMMIT)b|a+c/
+\= Expect no match
     aaaaaac
 
 # ---- Tests using THEN ----
@@ -5389,6 +5405,7 @@ name)/mark
 
 /(a(*COMMIT)b)c|abd/
     abc
+\= Expect no match
     abd
 
 /(?=a(*COMMIT)b)abc|abd/
@@ -5400,14 +5417,16 @@ name)/mark
     abd
 
 /a(?=b(*COMMIT)c)[^d]|abd/
+    abc
+\= Expect no match
     abd
-    abc 
 
 /a(?=bc).|abd/
     abd
     abc 
     
 /a(?>b(*COMMIT)c)d|abd/
+\= Expect no match
     abceabd 
 
 /a(?>bc)d|abd/
@@ -5417,6 +5436,7 @@ name)/mark
     abd
 
 /(?>a(*COMMIT)c)d|abd/
+\= Expect no match
     abd
 
 /((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))/
@@ -5426,7 +5446,7 @@ name)/mark
 # made them compatible. 
     
 /^(a)?(?(1)a|b)+$/
-    *** Failers
+\= Expect no match
     a
 
 /(?=a\Kb)ab/
@@ -5441,58 +5461,73 @@ name)/mark
 /^abc(?<!b\Kq)d/
     abcd
 
-
 /A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 
 /^((abc|abcx)(*THEN)y|abcd)/
     abcd
-    *** Failers 
+\= Expect no match 
     abcxy 
     
 /^((yes|no)(*THEN)(*F))?/
+\= Expect no match
     yes
 
 /(A (.*)   C? (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   C? (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   C? (*THEN)  | A D) \s* (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   C? (*THEN)  | A D) \s* z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   (?:C|) (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   (?:C|) (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   C{0,6} (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   C{0,6} (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   (CE){0,6} (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCEBefgBhiBqz
 
 /(A (.*)   (CE){0,6} (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCEBefgBhiBqz
 
 /(A (.*)   (CE*){0,6} (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(A (.*)   (CE*){0,6} (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 
 /(?=a(*COMMIT)b|ac)ac|ac/
+\= Expect no match
     ac
 
 /(?=a(*COMMIT)b|(ac)) ac | (a)c/x
+\= Expect no match
     ac
 
 # ----
@@ -5519,6 +5554,7 @@ name)/mark
    bnn 
 
 /(?=b(*SKIP)a)bn|bnn/
+\= Expect no match
     bnn
 
 /(?=b(*THEN)a)bn|bnn/
@@ -5565,22 +5601,27 @@ name)/mark
 
 /^\d*\w{4}/
     1234
+\= Expect no match
     123 
 
 /^[^b]*\w{4}/
     aaaa
+\= Expect no match
     aaa     
 
 /^[^b]*\w{4}/i
     aaaa
+\= Expect no match
     aaa     
 
 /^a*\w{4}/
     aaaa
+\= Expect no match
     aaa     
 
 /^a*\w{4}/i
     aaaa
+\= Expect no match
     aaa     
 
 /(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames
@@ -5590,7 +5631,7 @@ name)/mark
 /(?<n>A)(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames
     AfooA
     AbarA  
-    ** Failers 
+\= Expect no match 
     Afoofoo
     Abarbar
 
@@ -5641,6 +5682,7 @@ name)/mark
     ababc
 
 /(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc/
+\= Expect no match
     acb
 
 '\A(?:[^\"]++|\"(?:[^\"]*+|\"\")*+\")++'
@@ -5671,6 +5713,7 @@ name)/mark
     bbbaaabaabb
 
 /(?:(?P=same)?(?:(?P=same)(?P<same>a)(?P=same)|(?P=same)?(?P<same>b)(?P=same)){2}(?P=same)(?P<same>c)(?P=same)){2}(?P<same>z)?/g,dupnames
+\= Expect no match
     bbbaaaccccaaabbbcc
 
 /(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l/
@@ -5727,4 +5770,26 @@ name)/mark
 "(?|(\k'Pm')|(?'Pm'))"
     abcd
 
+/(?|(aaa)|(b))\g{1}/
+    aaaaaa
+    bb 
+
+/(?|(aaa)|(b))(?1)/
+    aaaaaa
+    baaa 
+\= Expect no match 
+    bb 
+
+/(?|(aaa)|(b))/
+    xaaa
+    xbc 
+
+/(?|(?'a'aaa)|(?'a'b))\k'a'/
+    aaaaaa
+    bb 
+
+/(?|(?'a'aaa)|(?'a'b))(?'a'cccc)\k'a'/dupnames
+    aaaccccaaa
+    bccccb 
+
 # End of testinput1 
diff --git a/testdata/testinput10 b/testdata/testinput10
index a1fdd92..550e1c9 100644
--- a/testdata/testinput10
+++ b/testdata/testinput10
@@ -1,45 +1,7 @@
 # This set of tests is for UTF-8 support and Unicode property support, with
 # relevance only for the 8-bit library.
 
-/X(\C{3})/utf
-    X\x{1234}
-
-/X(\C{4})/utf
-    X\x{1234}YZ
-
-/X\C*/utf
-    XYZabcdce
-
-/X\C*?/utf
-    XYZabcde
-
-/X\C{3,5}/utf
-    Xabcdefg
-    X\x{1234}
-    X\x{1234}YZ
-    X\x{1234}\x{512}
-    X\x{1234}\x{512}YZ
-
-/X\C{3,5}?/utf
-    Xabcdefg
-    X\x{1234}
-    X\x{1234}YZ
-    X\x{1234}\x{512}
-
-/a\Cb/utf
-    aXb
-    a\nb
-
-/a\C\Cb/utf
-    a\x{100}b
-
-/ab\Cde/utf
-    abXde
-
-/a\C\Cb/utf
-    a\x{100}b
-    ** Failers
-    a\x{12257}b
+# The next 4 patterns have UTF-8 errors
 
 /[�]/utf
 
@@ -47,7 +9,12 @@
 
 /���xxx/utf
 
+/��������/utf
+
+# Now test subjects
+
 /badutf/utf
+\= Expect UTF-8 errors
     X\xdf
     XX\xef
     XXX\xef\x80
@@ -89,11 +56,13 @@
     \xff
 
 /badutf/utf
+\= Expect UTF-8 errors
     XX\xfb\x80\x80\x80\x80
     XX\xfd\x80\x80\x80\x80\x80
     XX\xf7\xbf\xbf\xbf
 
 /shortutf/utf
+\= Expect UTF-8 errors
     XX\xdf\=ph
     XX\xef\=ph
     XX\xef\x80\=ph
@@ -111,6 +80,7 @@
     \xfd\x80\x80\x80\x80\=ph
 
 /anything/utf
+\= Expect UTF-8 errors
     X\xc0\x80
     XX\xc1\x8f
     XXX\xe0\x9f\x80
@@ -119,20 +89,57 @@
     \xfc\x83\x80\x80\x80\x80
     \xfe\x80\x80\x80\x80\x80
     \xff\x80\x80\x80\x80\x80
+    \xf8\x88\x80\x80\x80
+    \xf9\x87\x80\x80\x80
+    \xfc\x84\x80\x80\x80\x80
+    \xfd\x83\x80\x80\x80\x80
+\= Expect no match
     \xc3\x8f
     \xe0\xaf\x80
     \xe1\x80\x80
     \xf0\x9f\x80\x80
     \xf1\x8f\x80\x80
-    \xf8\x88\x80\x80\x80
-    \xf9\x87\x80\x80\x80
-    \xfc\x84\x80\x80\x80\x80
-    \xfd\x83\x80\x80\x80\x80
     \xf8\x88\x80\x80\x80\=no_utf_check
     \xf9\x87\x80\x80\x80\=no_utf_check
     \xfc\x84\x80\x80\x80\x80\=no_utf_check
     \xfd\x83\x80\x80\x80\x80\=no_utf_check
+    
+# Similar tests with offsets
 
+/badutf/utf
+\= Expect UTF-8 errors
+    X\xdfabcd
+    X\xdfabcd\=offset=1
+\= Expect no match
+    X\xdfabcd\=offset=2
+
+/(?<=x)badutf/utf
+\= Expect UTF-8 errors
+    X\xdfabcd
+    X\xdfabcd\=offset=1
+    X\xdfabcd\=offset=2
+    X\xdfabcd\xdf\=offset=3
+\= Expect no match
+    X\xdfabcd\=offset=3
+
+/(?<=xx)badutf/utf
+\= Expect UTF-8 errors
+    X\xdfabcd
+    X\xdfabcd\=offset=1
+    X\xdfabcd\=offset=2
+    X\xdfabcd\=offset=3
+
+/(?<=xxxx)badutf/utf
+\= Expect UTF-8 errors
+    X\xdfabcd
+    X\xdfabcd\=offset=1
+    X\xdfabcd\=offset=2
+    X\xdfabcd\=offset=3
+    X\xdfabc\xdf\=offset=6
+    X\xdfabc\xdf\=offset=7
+\= Expect no match
+    X\xdfabcd\=offset=6
+ 
 /\x{100}/IB,utf
 
 /\x{1000}/IB,utf
@@ -167,27 +174,12 @@
 
 /\x{212ab}/IB,utf
 
-# This one is here not because it's different to Perl, but because the way
-# the captured single-byte is displayed. (In Perl it becomes a character, and you
-# can't tell the difference.)
-
-/X(\C)(.*)/utf
-    X\x{1234}
-    X\nabc
-
-# This one is here because Perl gives out a grumbly error message (quite
-# correctly, but that messes up comparisons).
-
-/a\Cb/utf
-    *** Failers
-    a\x{100}b
-
 /[^ab\xC0-\xF0]/IB,utf
     \x{f1}
     \x{bf}
     \x{100}
     \x{1000}
-    *** Failers
+\= Expect no match
     \x{c0}
     \x{f0}
 
@@ -214,7 +206,6 @@
     \x{100}
     Z\x{100}
     \x{100}Z
-    *** Failers
 
 /[\xff]/IB,utf
     >\x{ff}<
@@ -236,21 +227,23 @@
 # This tests the stricter UTF-8 check according to RFC 3629.
 
 /X/utf
+\= Expect UTF-8 errors
     \x{d800}
-    \x{d800}\=no_utf_check
     \x{da00}
-    \x{da00}\=no_utf_check
     \x{dfff}
-    \x{dfff}\=no_utf_check
     \x{110000}
-    \x{110000}\=no_utf_check
     \x{2000000}
-    \x{2000000}\=no_utf_check
     \x{7fffffff}
+\= Expect no match
+    \x{d800}\=no_utf_check
+    \x{da00}\=no_utf_check
+    \x{dfff}\=no_utf_check
+    \x{110000}\=no_utf_check
+    \x{2000000}\=no_utf_check
     \x{7fffffff}\=no_utf_check
 
 /(*UTF8)\x{1234}/
-  abcd\x{1234}pqr
+    abcd\x{1234}pqr
 
 /(*CRLF)(*UTF)(*BSR_UNICODE)a\Rb/I
 
@@ -290,11 +283,14 @@
 
 /a+/utf
     a\x{123}aa\=offset=1
-    a\x{123}aa\=offset=2
     a\x{123}aa\=offset=3
     a\x{123}aa\=offset=4
-    a\x{123}aa\=offset=5
+\= Expect bad offset value
     a\x{123}aa\=offset=6
+\= Expect bad UTF-8 offset     
+    a\x{123}aa\=offset=2
+\= Expect no match
+    a\x{123}aa\=offset=5
 
 /\x{1234}+/Ii,utf
 
@@ -395,7 +391,6 @@
     Z\x{100}
     \x{100}
     \x{100}Z
-    *** Failers 
 
 /[z-\x{100}]/IB,utf
 
@@ -421,7 +416,7 @@
     \x{104}
     \x{105}
     \x{109}  
-    ** Failers
+\= Expect no match
     \x{100}
     \x{10a} 
     
@@ -435,7 +430,7 @@
     \x{ff}
     \x{100}
     \x{101} 
-    ** Failers
+\= Expect no match
     \x{102}
     Y
     y           
@@ -445,6 +440,9 @@
 /\x{3a3}B/IBi,utf
 
 /abc/utf,replace=�
-   abc
+    abc
+
+/(?<=(a)(?-1))x/I,utf
+    a\x80zx\=offset=3
 
 # End of testinput10
diff --git a/testdata/testinput11 b/testdata/testinput11
index 43d89e1..2bdef9b 100644
--- a/testdata/testinput11
+++ b/testdata/testinput11
@@ -4,11 +4,8 @@
 # different, so they have separate output files.
     
 #forbid_utf
+#newline_default LF ANY ANYCRLF
 
-/a\Cb/
-    aXb
-    a\nb
-  
 /[^\x{c4}]/IB
   
 /\x{100}/I
@@ -343,7 +340,7 @@
 
 # Non-UTF characters 
 
-/\C{2,3}/
+/.{2,3}/
     \x{400000}\x{400001}\x{400002}\x{400003}
 
 /\x{400000}\x{800000}/IBi
@@ -354,4 +351,6 @@
 
 /[\V]/IB
 
+/(*THEN:\[A]{65501})/expand
+
 # End of testinput11
diff --git a/testdata/testinput12 b/testdata/testinput12
index 1cba4af..14a7715 100644
--- a/testdata/testinput12
+++ b/testdata/testinput12
@@ -7,49 +7,6 @@
 /abc/utf
     �]
 
-/X(\C{3})/utf
-    X\x{11234}Y
-    X\x{11234}YZ
-
-/X(\C{4})/utf
-    X\x{11234}YZ
-    X\x{11234}YZW
-
-/X\C*/utf
-    XYZabcdce
-
-/X\C*?/utf
-    XYZabcde
-
-/X\C{3,5}/utf
-    Xabcdefg
-    X\x{11234}Y
-    X\x{11234}YZ
-    X\x{11234}\x{512}
-    X\x{11234}\x{512}YZ
-    X\x{11234}\x{512}\x{11234}Z
-
-/X\C{3,5}?/utf
-    Xabcdefg
-    X\x{11234}Y
-    X\x{11234}YZ
-    X\x{11234}\x{512}YZ
-    *** Failers
-    X\x{11234}
-
-/a\Cb/utf
-    aXb
-    a\nb
-
-/a\C\Cb/utf
-    a\x{12257}b
-    a\x{12257}\x{11234}b
-    ** Failers
-    a\x{100}b
-
-/ab\Cde/utf
-    abXde
-
 # Check maximum character size 
 
 /\x{ffff}/IB,utf
@@ -90,27 +47,12 @@
 
 /\x{212ab}/IB,utf
 
-# This one is here not because it's different to Perl, but because the way
-# the captured single-byte is displayed. (In Perl it becomes a character, and you
-# can't tell the difference.) 
-
-/X(\C)(.*)/utf
-    X\x{1234}
-    X\nabc
-
-# This one is here because Perl gives out a grumbly error message (quite
-# correctly, but that messes up comparisons). 
-
-/a\Cb/utf
-    *** Failers
-    a\x{100}b
-
 /[^ab\xC0-\xF0]/IB,utf
     \x{f1}
     \x{bf}
     \x{100}
     \x{1000}
-    *** Failers
+\= Expect no match
     \x{c0}
     \x{f0}
 
@@ -137,7 +79,6 @@
     \x{100}
     Z\x{100}
     \x{100}Z
-    *** Failers
 
 /[\xff]/IB,utf
     >\x{ff}<
@@ -157,18 +98,24 @@
 /^[\QĀ\E-\QŐ\E/B,utf
 
 /X/utf
-    XX\x{d800}
     XX\x{d800}\=no_utf_check
-    XX\x{da00}
     XX\x{da00}\=no_utf_check
-    XX\x{dc00}
     XX\x{dc00}\=no_utf_check
-    XX\x{de00}
     XX\x{de00}\=no_utf_check
-    XX\x{dfff}
     XX\x{dfff}\=no_utf_check
+\= Expect UTF error
+    XX\x{d800}
+    XX\x{da00}
+    XX\x{dc00}
+    XX\x{de00}
+    XX\x{dfff}
     XX\x{110000}
     XX\x{d800}\x{1234}
+\= Expect no match
+    XX\x{d800}\=offset=3
+    
+/(?<=.)X/utf
+    XX\x{d800}\=offset=3
 
 /(*UTF16)\x{11234}/
   abcd\x{11234}pqr
@@ -229,7 +176,9 @@
     a\x{123}aa\=offset=1
     a\x{123}aa\=offset=2
     a\x{123}aa\=offset=3
+\= Expect no match
     a\x{123}aa\=offset=4
+\= Expect bad offset error     
     a\x{123}aa\=offset=5
     a\x{123}aa\=offset=6
 
@@ -250,11 +199,16 @@
 # Check bad offset 
 
 /a/utf
+\= Expect bad UTF-16 offset, or no match in 32-bit
     \x{10000}\=offset=1
     \x{10000}ab\=offset=1
+\= Expect 16-bit match, 32-bit no match
     \x{10000}ab\=offset=2
+\= Expect no match     
     \x{10000}ab\=offset=3
+\= Expect no match in 16-bit, bad offset in 32-bit    
     \x{10000}ab\=offset=4
+\= Expect bad offset     
     \x{10000}ab\=offset=5
 
 /���/utf
@@ -329,9 +283,6 @@
 
 /\o{4200000}/utf
 
-/\C/utf
-    \x{110000}
-
 /\x{100}*A/IB,utf
     A
 
@@ -341,7 +292,6 @@
     Z\x{100}
     \x{100}
     \x{100}Z
-    *** Failers 
 
 /[z-\x{100}]/IB,utf
 
@@ -367,7 +317,7 @@
     \x{104}
     \x{105}
     \x{109}  
-    ** Failers
+\= Expect no match
     \x{100}
     \x{10a} 
     
@@ -381,7 +331,7 @@
     \x{ff}
     \x{100}
     \x{101} 
-    ** Failers
+\= Expect no match
     \x{102}
     Y
     y           
@@ -390,4 +340,7 @@
 
 /\x{3a3}B/IBi,utf
 
+/./utf
+    \x{110000}
+
 # End of testinput12
diff --git a/testdata/testinput14 b/testdata/testinput14
index 69ca2b6..f97f3ec 100644
--- a/testdata/testinput14
+++ b/testdata/testinput14
@@ -1,112 +1,37 @@
-# These are:
-#
-# (1) Tests of the match-limiting features. The results are different for
-# interpretive or JIT matching, so this test should not be run with JIT. The
-# same tests are run using JIT in test 16.
-
-# (2) Other tests that must not be run with JIT.
-
-/(a+)*zz/I
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\=find_limits
-  aaaaaaaaaaaaaz\=find_limits
-
-!((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)!I
-   /* this is a C style comment */\=find_limits
-
-/^(?>a)++/
-    aa\=find_limits
-    aaaaaaaaa\=find_limits
-    
-/(a)(?1)++/
-    aa\=find_limits
-    aaaaaaaaa\=find_limits
-
-/a(?:.)*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-    
-/a(?:.(*THEN))*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-
-/a(?:.(*THEN:ABC))*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-
-/^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
-     aabbccddee\=find_limits
-
-/^(?>(a+))(?>(b+))(?>(c+))(?>(d+))(?>(e+))/
-     aabbccddee\=find_limits
-
-/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
-     aabbccddee\=find_limits
-
-/(*LIMIT_MATCH=12bc)abc/
-
-/(*LIMIT_MATCH=4294967290)abc/
-
-/(*LIMIT_RECURSION=4294967280)abc/I
-
-/(a+)*zz/
-    aaaaaaaaaaaaaz
-    aaaaaaaaaaaaaz\=match_limit=3000
-
-/(a+)*zz/
-    aaaaaaaaaaaaaz\=recursion_limit=10
-
-/(*LIMIT_MATCH=3000)(a+)*zz/I
-    aaaaaaaaaaaaaz
-    aaaaaaaaaaaaaz\=match_limit=60000
-
-/(*LIMIT_MATCH=60000)(*LIMIT_MATCH=3000)(a+)*zz/I
-    aaaaaaaaaaaaaz
-
-/(*LIMIT_MATCH=60000)(a+)*zz/I
-    aaaaaaaaaaaaaz
-    aaaaaaaaaaaaaz\=match_limit=3000
-
-/(*LIMIT_RECURSION=10)(a+)*zz/I
-    aaaaaaaaaaaaaz
-    aaaaaaaaaaaaaz\=recursion_limit=1000
-
-/(*LIMIT_RECURSION=10)(*LIMIT_RECURSION=1000)(a+)*zz/I
-    aaaaaaaaaaaaaz
-
-/(*LIMIT_RECURSION=1000)(a+)*zz/I
-    aaaaaaaaaaaaaz
-    aaaaaaaaaaaaaz\=recursion_limit=10
-    
-# These three have infinitely nested recursions. 
-    
-/((?2))((?1))/
-    abc
-
-/((?(R2)a+|(?1)b))/
-    aaaabcde
-
-/(?(R)a*(?1)|((?R))b)/
-    aaaabcde
-    
-# The allusedtext modifier does not work with JIT, which does not maintain
-# the leftchar/rightchar data.
-
-/abc(?=xyz)/allusedtext
-    abcxyzpqr
-    abcxyzpqr\=aftertext
-    
-/(?<=pqr)abc(?=xyz)/allusedtext
-    xyzpqrabcxyzpqr
-    xyzpqrabcxyzpqr\=aftertext
-    
-/a\b/
-    a.\=allusedtext
-    a\=allusedtext  
-
-/abc\Kxyz/
-    abcxyz\=allusedtext
-
-/abc(?=xyz(*ACCEPT))/
-    abcxyz\=allusedtext
-
-/abc(?=abcde)(?=ab)/allusedtext
-    abcabcdefg
+# These test special (mostly error) UTF features of DFA matching. They are a 
+# selection of the more comprehensive tests that are run for non-DFA matching.
+# The output is different for the different widths.
+
+#subject dfa
+
+/X/utf
+    XX\x{d800}
+    XX\x{d800}\=offset=3
+    XX\x{d800}\=no_utf_check
+    XX\x{da00}
+    XX\x{da00}\=no_utf_check
+    XX\x{dc00}
+    XX\x{dc00}\=no_utf_check
+    XX\x{de00}
+    XX\x{de00}\=no_utf_check
+    XX\x{dfff}
+    XX\x{dfff}\=no_utf_check
+    XX\x{110000}
+    XX\x{d800}\x{1234}
+          
+/badutf/utf
+    X\xdf
+    XX\xef
+    XXX\xef\x80
+    X\xf7
+    XX\xf7\x80
+    XXX\xf7\x80\x80
+
+/shortutf/utf
+    XX\xdf\=ph
+    XX\xef\=ph
+    XX\xef\x80\=ph
+    \xf7\=ph
+    \xf7\x80\=ph
 
 # End of testinput14
diff --git a/testdata/testinput15 b/testdata/testinput15
index d23b127..4ea9ffd 100644
--- a/testdata/testinput15
+++ b/testdata/testinput15
@@ -1,9 +1,163 @@
-# This test is run only when JIT support is not available. It checks that an
-# attempt to use it has the expected behaviour. It also tests things that
-# are different without JIT.
+# These are:
+#
+# (1) Tests of the match-limiting features. The results are different for
+# interpretive or JIT matching, so this test should not be run with JIT. The
+# same tests are run using JIT in test 17.
 
-/abc/I,jit,jitverify
+# (2) Other tests that must not be run with JIT.
 
-/a*/I
+/(a+)*zz/I
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\=find_limits
+  aaaaaaaaaaaaaz\=find_limits
+
+!((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)!I
+   /* this is a C style comment */\=find_limits
+
+/^(?>a)++/
+    aa\=find_limits
+    aaaaaaaaa\=find_limits
+    
+/(a)(?1)++/
+    aa\=find_limits
+    aaaaaaaaa\=find_limits
+
+/a(?:.)*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+    
+/a(?:.(*THEN))*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+
+/a(?:.(*THEN:ABC))*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+
+/^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
+     aabbccddee\=find_limits
+
+/^(?>(a+))(?>(b+))(?>(c+))(?>(d+))(?>(e+))/
+     aabbccddee\=find_limits
+
+/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
+     aabbccddee\=find_limits
+
+/(*LIMIT_MATCH=12bc)abc/
+
+/(*LIMIT_MATCH=4294967290)abc/
+
+/(*LIMIT_RECURSION=4294967280)abc/I
+
+/(a+)*zz/
+    aaaaaaaaaaaaaz
+    aaaaaaaaaaaaaz\=match_limit=3000
+
+/(a+)*zz/
+    aaaaaaaaaaaaaz\=recursion_limit=10
+
+/(*LIMIT_MATCH=3000)(a+)*zz/I
+    aaaaaaaaaaaaaz
+    aaaaaaaaaaaaaz\=match_limit=60000
+
+/(*LIMIT_MATCH=60000)(*LIMIT_MATCH=3000)(a+)*zz/I
+    aaaaaaaaaaaaaz
+
+/(*LIMIT_MATCH=60000)(a+)*zz/I
+    aaaaaaaaaaaaaz
+    aaaaaaaaaaaaaz\=match_limit=3000
+
+/(*LIMIT_RECURSION=10)(a+)*zz/I
+    aaaaaaaaaaaaaz
+    aaaaaaaaaaaaaz\=recursion_limit=1000
+
+/(*LIMIT_RECURSION=10)(*LIMIT_RECURSION=1000)(a+)*zz/I
+    aaaaaaaaaaaaaz
+
+/(*LIMIT_RECURSION=1000)(a+)*zz/I
+    aaaaaaaaaaaaaz
+    aaaaaaaaaaaaaz\=recursion_limit=10
+    
+# These three have infinitely nested recursions. 
+    
+/((?2))((?1))/
+    abc
+
+/((?(R2)a+|(?1)b))/
+    aaaabcde
+
+/(?(R)a*(?1)|((?R))b)/
+    aaaabcde
+    
+# The allusedtext modifier does not work with JIT, which does not maintain
+# the leftchar/rightchar data.
+
+/abc(?=xyz)/allusedtext
+    abcxyzpqr
+    abcxyzpqr\=aftertext
+    
+/(?<=pqr)abc(?=xyz)/allusedtext
+    xyzpqrabcxyzpqr
+    xyzpqrabcxyzpqr\=aftertext
+    
+/a\b/
+    a.\=allusedtext
+    a\=allusedtext  
+
+/abc\Kxyz/
+    abcxyz\=allusedtext
+
+/abc(?=xyz(*ACCEPT))/
+    abcxyz\=allusedtext
+
+/abc(?=abcde)(?=ab)/allusedtext
+    abcabcdefg
+    
+# These tests provoke recursion loops, which give a different error message
+# when JIT is used.
+
+/(?R)/I
+    abcd
+
+/(a|(?R))/I
+    abcd
+    defg 
+
+/(ab|(bc|(de|(?R))))/I
+    abcd
+    fghi 
+
+/(ab|(bc|(de|(?1))))/I
+    abcd
+    fghi 
+
+/x(ab|(bc|(de|(?1)x)x)x)/I
+    xab123
+    xfghi 
+
+/(?!\w)(?R)/
+    abcd
+    =abc 
+
+/(?=\w)(?R)/
+    =abc 
+    abcd
+
+/(?<!\w)(?R)/
+    abcd
+
+/(?<=\w)(?R)/
+    abcd
+
+/(a+|(?R)b)/
+    aaa
+    bbb 
+
+/[^\xff]((?1))/BI
+    abcd
+    
+# These tests don't behave the same with JIT 
+
+/\w+(?C1)/BI,no_auto_possess
+    abc\=callout_fail=1
+
+/(*NO_AUTO_POSSESS)\w+(?C1)/BI
+    abc\=callout_fail=1
 
 # End of testinput15
diff --git a/testdata/testinput16 b/testdata/testinput16
index c26dfaf..8a48207 100644
--- a/testdata/testinput16
+++ b/testdata/testinput16
@@ -1,205 +1,9 @@
-# This test is run only when JIT support is available. It checks JIT complete
-# and partial modes, and things that are different with JIT.
+# This test is run only when JIT support is not available. It checks that an
+# attempt to use it has the expected behaviour. It also tests things that
+# are different without JIT.
 
-#pattern jitverify
+/abc/I,jit,jitverify
 
-# JIT does not support this pattern (callout at start of condition).
-
-/(?(?C1)(?=a)a)/I
-
-# The following pattern cannot be compiled by JIT.
-
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-
-# Check that an infinite recursion loop is caught.
-
-/(?(R)a*(?1)|((?R))b)/
-    aaaabcde
-
-/abcd/I
-    abcd
-    xyz
-
-/(*NO_JIT)abcd/I
-    abcd
-    xyz
-
-/abcd/
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/jitfast
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/jit=1
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-    xyz\=ps
-
-/abcd/jit=1,jitfast
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-    xyz\=ps
-
-/abcd/jit=2
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/jit=2,jitfast
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/jit=3
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/jit=4
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/jit=5
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/jit=6
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/jit=7
-    abcd
-    ab\=ps
-    ab\=ph
-    xyz
-
-/abcd/I,jit=2
-
-/(*NO_START_OPT)a(*:m)b/mark
-    a
-
-/^12345678abcd/m
-    12345678abcd
-    
-# Limits tests that give different output with JIT. 
-
-/(a+)*zz/I
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\=find_limits
-  aaaaaaaaaaaaaz\=find_limits
-
-!((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)!I
-   /* this is a C style comment */\=find_limits
-
-/^(?>a)++/
-    aa\=find_limits
-    aaaaaaaaa\=find_limits
-    
-/(a)(?1)++/
-    aa\=find_limits
-    aaaaaaaaa\=find_limits
-
-/a(?:.)*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-    
-/a(?:.(*THEN))*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-
-/a(?:.(*THEN:ABC))*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-
-/^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
-     aabbccddee\=find_limits
-
-/^(?>(a+))(?>(b+))(?>(c+))(?>(d+))(?>(e+))/
-     aabbccddee\=find_limits
-
-/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
-     aabbccddee\=find_limits
-
-/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/jitfast
-     aabbccddee\=find_limits
-     aabbccddee\=jitstack=1
-
-/(a+)*zz/
-    aaaaaaaaaaaaaz
-    aaaaaaaaaaaaaz\=match_limit=3000
-
-/(*LIMIT_MATCH=3000)(a+)*zz/I
-    aaaaaaaaaaaaaz
-    aaaaaaaaaaaaaz\=match_limit=60000
-
-/(*LIMIT_MATCH=60000)(*LIMIT_MATCH=3000)(a+)*zz/I
-    aaaaaaaaaaaaaz
-
-/(*LIMIT_MATCH=60000)(a+)*zz/I
-    aaaaaaaaaaaaaz
-    aaaaaaaaaaaaaz\=match_limit=3000
-
-# These three have infinitely nested recursions. 
-    
-/((?2))((?1))/
-    abc
-
-/((?(R2)a+|(?1)b))/
-    aaaabcde
-
-/(?(R)a*(?1)|((?R))b)/
-    aaaabcde
-    
-# Invalid options disable JIT when called via pcre2_match(), causing the
-# match to happen via the interpreter, but for fast JIT invalid options are
-# ignored, so an unanchored match happens.
-
-/abcd/
-    abcd\=anchored
-    fail abcd\=anchored 
-    
-/abcd/jitfast
-    abcd\=anchored 
-    succeed abcd\=anchored 
-    
-# Push/pop does not lose the JIT information, though jitverify applies only to
-# compilation, but serializing (save/load) discards JIT data completely.
-
-/^abc\Kdef/info,push
-#pop jitverify
-    abcdef
-
-/^abc\Kdef/info,push
-#save testsaved1
-#load testsaved1
-#pop jitverify
-    abcdef
-    
-#load testsaved1
-#pop jit,jitverify
-    abcdef
-    
-# Test pattern compilation
-
-/(?:a|b|c|d|e)(?R)/jit=1
-
-/(?:a|b|c|d|e)(?R)(?R)/jit=1
-
-/(a(?:a|b|c|d|e)b){8,16}/jit=1
+/a*/I
 
 # End of testinput16
diff --git a/testdata/testinput17 b/testdata/testinput17
index d636d38..1474eb9 100644
--- a/testdata/testinput17
+++ b/testdata/testinput17
@@ -1,95 +1,276 @@
-# This set of tests is run only with the 8-bit library. It tests the POSIX
-# interface, which is supported only with the 8-bit library. This test should
-# not be run with JIT (which is not available for the POSIX interface).
+# This test is run only when JIT support is available. It checks JIT complete
+# and partial modes, and things that are different with JIT.
+
+#pattern jitverify
+
+# JIT does not support this pattern (callout at start of condition).
+
+/(?(?C1)(?=a)a)/I
+
+# The following pattern cannot be compiled by JIT.
+
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+
+# Check that an infinite recursion loop is caught.
+
+/(?(R)a*(?1)|((?R))b)/
+    aaaabcde
+
+/abcd/I
+    abcd
+\= Expect no match
+    xyz
+
+/(*NO_JIT)abcd/I
+    abcd
+\= Expect no match
+    xyz
+
+/abcd/
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+
+/abcd/jitfast
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+
+/abcd/jit=1
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+    xyz\=ps
+
+/abcd/jit=1,jitfast
+    abcd
+    ab\=ps
+    ab\=ph
+    xyz\=ps
+\= Expect no match
+    xyz
+
+/abcd/jit=2
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+
+/abcd/jit=2,jitfast
+    abcd
+    ab\=ps
+    ab\=ph
+    xyz
+
+/abcd/jit=3
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+
+/abcd/jit=4
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+
+/abcd/jit=5
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+
+/abcd/jit=6
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+
+/abcd/jit=7
+    abcd
+    ab\=ps
+    ab\=ph
+\= Expect no match
+    xyz
+
+/abcd/I,jit=2
+
+/(*NO_START_OPT)a(*:m)b/mark
+\= Expect no match
+    a
+
+/^12345678abcd/m
+    12345678abcd
+    
+# Limits tests that give different output with JIT. 
+
+/(a+)*zz/I
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\=find_limits
+\= Expect no match
+  aaaaaaaaaaaaaz\=find_limits
+
+!((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)!I
+   /* this is a C style comment */\=find_limits
+
+/^(?>a)++/
+    aa\=find_limits
+    aaaaaaaaa\=find_limits
+    
+/(a)(?1)++/
+    aa\=find_limits
+    aaaaaaaaa\=find_limits
+
+/a(?:.)*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
     
-#forbid_utf
-#pattern posix
+/a(?:.(*THEN))*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+
+/a(?:.(*THEN:ABC))*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+
+/^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
+     aabbccddee\=find_limits
+
+/^(?>(a+))(?>(b+))(?>(c+))(?>(d+))(?>(e+))/
+     aabbccddee\=find_limits
+
+/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
+     aabbccddee\=find_limits
 
-# Test invalid options
+/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/jitfast
+     aabbccddee\=find_limits
+     aabbccddee\=jitstack=1
 
-/abc/auto_callout
+/(a+)*zz/
+\= Expect no match
+    aaaaaaaaaaaaaz
+\= Expect limit exceeded
+    aaaaaaaaaaaaaz\=match_limit=3000
 
-/abc/
-   abc\=find_limits
+/(*LIMIT_MATCH=3000)(a+)*zz/I
+    aaaaaaaaaaaaaz
+    aaaaaaaaaaaaaz\=match_limit=60000
 
-/abc/
-  abc\=partial_hard
+/(*LIMIT_MATCH=60000)(*LIMIT_MATCH=3000)(a+)*zz/I
+    aaaaaaaaaaaaaz
 
-# Real tests
+/(*LIMIT_MATCH=60000)(a+)*zz/I
+\= Expect no match
+    aaaaaaaaaaaaaz
+\= Expect limit exceeded
+    aaaaaaaaaaaaaz\=match_limit=3000
 
-/abc/
+# These three have infinitely nested recursions. 
+    
+/((?2))((?1))/
     abc
-    *** Failers
 
-/^abc|def/
+/((?(R2)a+|(?1)b))/
+    aaaabcde
+
+/(?(R)a*(?1)|((?R))b)/
+    aaaabcde
+    
+# Invalid options disable JIT when called via pcre2_match(), causing the
+# match to happen via the interpreter, but for fast JIT invalid options are
+# ignored, so an unanchored match happens.
+
+/abcd/
+    abcd\=anchored
+\= Expect no match
+    fail abcd\=anchored 
+    
+/abcd/jitfast
+    abcd\=anchored 
+    succeed abcd\=anchored 
+    
+# Push/pop does not lose the JIT information, though jitverify applies only to
+# compilation, but serializing (save/load) discards JIT data completely.
+
+/^abc\Kdef/info,push
+#pop jitverify
     abcdef
-    abcdef\=notbol
 
-/.*((abc)$|(def))/
-    defabc
-    defabc\=noteol
+/^abc\Kdef/info,push
+#save testsaved1
+#load testsaved1
+#pop jitverify
+    abcdef
+    
+#load testsaved1
+#pop jit,jitverify
+    abcdef
+    
+# Test pattern compilation
 
-/the quick brown fox/
-    the quick brown fox
-    *** Failers
-    The Quick Brown Fox
+/(?:a|b|c|d|e)(?R)/jit=1
 
-/the quick brown fox/i
-    the quick brown fox
-    The Quick Brown Fox
+/(?:a|b|c|d|e)(?R)(?R)/jit=1
 
-/abc.def/
-    *** Failers
-    abc\ndef
+/(a(?:a|b|c|d|e)b){8,16}/jit=1
 
-/abc$/
-    abc
-    abc\n
+/(?:|a|){100}x/jit=1
 
-/(abc)\2/
+# These tests provoke recursion loops, which give a different error message
+# when JIT is used.
 
-/(abc\1)/
-    abc
+/(?R)/I
+    abcd
 
-/a*(b+)(z)(z)/
-    aaaabbbbzzzz
-    aaaabbbbzzzz\=ovector=0
-    aaaabbbbzzzz\=ovector=1
-    aaaabbbbzzzz\=ovector=2
+/(a|(?R))/I
+    abcd
+    defg 
 
-/ab.cd/
-    ab-cd
-    ab=cd
-    ** Failers
-    ab\ncd
+/(ab|(bc|(de|(?R))))/I
+    abcd
+    fghi 
 
-/ab.cd/s
-    ab-cd
-    ab=cd
-    ab\ncd
+/(ab|(bc|(de|(?1))))/I
+    abcd
+    fghi 
 
-/a(b)c/no_auto_capture
-    abc
+/x(ab|(bc|(de|(?1)x)x)x)/I
+    xab123
+    xfghi 
 
-/a(?P<name>b)c/no_auto_capture
-    abc
+/(?!\w)(?R)/
+    abcd
+    =abc 
 
-/a?|b?/
-    abc
-    ** Failers
-    ddd\=notempty
+/(?=\w)(?R)/
+    =abc 
+    abcd
+
+/(?<!\w)(?R)/
+    abcd
+
+/(?<=\w)(?R)/
+    abcd
+
+/(a+|(?R)b)/
+    aaa
+    bbb 
 
-/\w+A/
-   CDAAAAB
+/[^\xff]((?1))/BI
+    abcd
 
-/\w+A/ungreedy
-   CDAAAAB
-   
-/\Biss\B/I,aftertext
-    Mississippi
+/(x(?1)){4}/
 
-/abc/\
+/[axm]{7}/
 
-"(?(?C)"
+/(.|.)*?bx/
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabax
 
-# End of testdata/testinput16  
+# End of testinput17
diff --git a/testdata/testinput18 b/testdata/testinput18
index a517905..c75b842 100644
--- a/testdata/testinput18
+++ b/testdata/testinput18
@@ -1,17 +1,101 @@
 # This set of tests is run only with the 8-bit library. It tests the POSIX
-# interface with UTF/UCP support, which is supported only with the 8-bit
-# library. This test should not be run with JIT (which is not available for the
-# POSIX interface).
+# interface, which is supported only with the 8-bit library. This test should
+# not be run with JIT (which is not available for the POSIX interface).
     
+#forbid_utf
 #pattern posix
 
-/a\x{1234}b/utf
-    a\x{1234}b
+# Test invalid options
 
-/\w/
-    +++\x{c2}
+/abc/auto_callout
 
-/\w/ucp
-    +++\x{c2}
-    
-# End of testdata/testinput17
+/abc/
+   abc\=find_limits
+
+/abc/
+  abc\=partial_hard
+
+# Real tests
+
+/abc/
+    abc
+
+/^abc|def/
+    abcdef
+    abcdef\=notbol
+
+/.*((abc)$|(def))/
+    defabc
+    defabc\=noteol
+
+/the quick brown fox/
+    the quick brown fox
+\= Expect no match
+    The Quick Brown Fox
+
+/the quick brown fox/i
+    the quick brown fox
+    The Quick Brown Fox
+
+/(*LF)abc.def/
+\= Expect no match
+    abc\ndef
+
+/(*LF)abc$/
+    abc
+    abc\n
+
+/(abc)\2/
+
+/(abc\1)/
+\= Expect no match
+    abc
+
+/a*(b+)(z)(z)/
+    aaaabbbbzzzz
+    aaaabbbbzzzz\=ovector=0
+    aaaabbbbzzzz\=ovector=1
+    aaaabbbbzzzz\=ovector=2
+
+/(*ANY)ab.cd/
+    ab-cd
+    ab=cd
+\= Expect no match
+    ab\ncd
+
+/ab.cd/s
+    ab-cd
+    ab=cd
+    ab\ncd
+
+/a(b)c/no_auto_capture
+    abc
+
+/a(?P<name>b)c/no_auto_capture
+    abc
+
+/a?|b?/
+    abc
+\= Expect no match
+    ddd\=notempty
+
+/\w+A/
+   CDAAAAB
+
+/\w+A/ungreedy
+   CDAAAAB
+   
+/\Biss\B/I,aftertext
+    Mississippi
+
+/abc/\
+
+"(?(?C)"
+
+/abcd/substitute_extended
+
+/\[A]{1000000}**/expand,regerror_buffsize=31
+
+/\[A]{1000000}**/expand,regerror_buffsize=32
+
+# End of testdata/testinput18
diff --git a/testdata/testinput19 b/testdata/testinput19
index 155fd13..7a90f1a 100644
--- a/testdata/testinput19
+++ b/testdata/testinput19
@@ -1,62 +1,18 @@
-# This set of tests exercises the serialization/deserialization functions in
-# the library. It does not use UTF or JIT.
-
-#forbid_utf
-
-# Compile several patterns, push them onto the stack, and then write them
-# all to a file.
-
-#pattern push
-
-/(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT))
-  (?(DEFINE)
-  (?<NAME_PAT>[a-z]+)
-  (?<ADDRESS_PAT>\d+)
-  )/x
-/^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i
-
-#save testsaved1
-
-# Do it again for some more patterns.
-
-/(*MARK:A)(*SKIP:B)(C|X)/mark
-/(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames
-
-#save testsaved2
-#pattern -push
-
-# Reload the patterns, then pop them one by one and check them.
-
-#load testsaved1
-#load testsaved2
-
-#pop info
-    foofoo             
-    barbar
-    
-#pop mark
-    C
-    D 
-    
-#pop
-    AmanaplanacanalPanama   
-
-#pop info
-    metcalfe 33
+# This set of tests is run only with the 8-bit library. It tests the POSIX
+# interface with UTF/UCP support, which is supported only with the 8-bit
+# library. This test should not be run with JIT (which is not available for the
+# POSIX interface).
     
-# Check for an error when different tables are used.
-
-/abc/push,tables=1
-/xyz/push,tables=2
-#save testsaved1
+#pattern posix
 
-#pop
-    xyz
+/a\x{1234}b/utf
+    a\x{1234}b
 
-#pop
-    abc
+/\w/
+\= Expect no match
+    +++\x{c2}
 
-#pop should give an error
-    pqr
-
-# End of testinput19 
+/\w/ucp
+    +++\x{c2}
+    
+# End of testdata/testinput19
diff --git a/testdata/testinput2 b/testdata/testinput2
index e0e149f..071cca1 100644
--- a/testdata/testinput2
+++ b/testdata/testinput2
@@ -9,6 +9,7 @@
 # test 5. 
 
 #forbid_utf
+#newline_default lf any anycrlf
 
 # Test binary zeroes in the pattern
 
@@ -30,14 +31,14 @@
     abc
     defabc
     abc\=anchored
-    *** Failers
+\= Expect no match
     defabc\=anchored
     ABC
 
 /^abc/I
     abc
     abc\=anchored
-    *** Failers
+\= Expect no match
     defabc
     defabc\=anchored
 
@@ -51,7 +52,7 @@
 
 /^abc$/I
     abc
-    *** Failers
+\= Expect no match
     def\nabc
 
 /ab\idef/
@@ -128,7 +129,7 @@
 
 /abc$/I,dollar_endonly
     abc
-    *** Failers
+\= Expect no match
     abc\n
     abc\ndef
 
@@ -140,7 +141,7 @@
 
 /the quick brown fox/I,anchored
     the quick brown fox
-    *** Failers
+\= Expect no match
     this is a line with the quick brown fox
 
 /ab(?z)cd/
@@ -184,7 +185,7 @@
 /(?<!bar|cattle)foo/I
     foo
     catfoo
-    *** Failers
+\= Expect no match
     the barfoo
     and cattlefoo
 
@@ -239,7 +240,7 @@
 /a$/I
     a
     a\n
-    *** Failers
+\= Expect no match
     a\=noteol
     a\n\=noteol
 
@@ -247,7 +248,7 @@
     a
     a\n
     a\n\=noteol
-    *** Failers
+\= Expect no match
     a\=noteol
 
 /\Aabc/Im
@@ -265,14 +266,14 @@
 
 /(?<=foo\n)^bar/Im
     foo\nbarbar
-    ***Failers
+\= Expect no match
     rhubarb
     barbell
     abc\nbarton
 
 /^(?<=foo\n)bar/Im
     foo\nbarbar
-    ***Failers
+\= Expect no match
     rhubarb
     barbell
     abc\nbarton
@@ -280,7 +281,7 @@
 /(?>^abc)/Im
     abc
     def\nabc
-    *** Failers
+\= Expect no match
     defabc
 
 /(?<=ab(c+)d)ef/
@@ -294,7 +295,7 @@
 /(?<=bullock|donkey)-cart/I
     the bullock-cart
     a donkey-cart race
-    *** Failers
+\= Expect no match
     cart
     horse-and-cart
 
@@ -311,7 +312,7 @@
     zZZ
     bZZ
     BZZ
-    *** Failers
+\= Expect no match
     ZZ
     abXYZZ
     zzz
@@ -320,30 +321,31 @@
 /(?<!(foo)a)bar/I
     bar
     foobbar
-    *** Failers
+\= Expect no match
     fooabar
 
-/This one is here because Perl behaves differently; see also the following/I
+# This one is here because Perl behaves differently; see also the following.
 
 /^(a\1?){4}$/I
+\= Expect no match
     aaaa
     aaaaaa
     
-/Perl does not fail these two for the final subjects. Neither did PCRE until/
-/release 8.01. The problem is in backtracking into a subpattern that contains/
-/a recursive reference to itself. PCRE has now made these into atomic patterns./
+# Perl does not fail these two for the final subjects. Neither did PCRE until
+# release 8.01. The problem is in backtracking into a subpattern that contains
+# a recursive reference to itself. PCRE has now made these into atomic patterns.
 
 /^(xa|=?\1a){2}$/
     xa=xaa
-    ** Failers
+\= Expect no match
     xa=xaaa
 
 /^(xa|=?\1a)+$/
     xa=xaa
-    ** Failers
+\= Expect no match
     xa=xaaa
 
-/These are syntax tests from Perl 5.005/I
+# These are syntax tests from Perl 5.005
 
 /a[b-a]/
 
@@ -466,7 +468,7 @@
 
 /\Biss\B/Ig,aftertext
     Mississippi
-    *** Failers
+\= Expect no match
     Mississippi\=anchored
 
 /(?<=[Ms])iss/Ig,aftertext
@@ -496,6 +498,9 @@
 /^ab\n/Igm,aftertext
     ab\nab\ncd
 
+/^/gm,newline=any
+    a\rb\nc\r\nxyz\=aftertext
+
 /abc/I
 
 /abc|bac/I
@@ -583,14 +588,14 @@
     b
     ab
     \
-    *** Failers
+\= Expect no match
     \=notempty
 
 /|-/I
     abcd
     -abc
     ab-c\=notempty
-    *** Failers
+\= Expect no match
     abc\=notempty
 
 /^.?abcd/I
@@ -610,7 +615,7 @@
     (ab(xycd)pqr
     () abc ()
     12(abcde(fsh)xyz(foo(bar))lmno)89
-    *** Failers
+\= Expect no match
     abcd
     abcd)
     (abcd
@@ -624,7 +629,7 @@
     (ab(xy)cd)
     (a(b(c)d)e)
     ((ab))
-    *** Failers
+\= Expect no match
     ()
 
 /\(  (?: (?>[^()]+) | (?R) )? \) /Ix
@@ -720,7 +725,7 @@
 /((?-i)[[:lower:]])[[:lower:]]/Ii
     ab
     aB
-    *** Failers
+\= Expect no match
     Ab
     AB
 
@@ -796,13 +801,13 @@
 /a(?i)b/IB
     ab
     aB
-    *** Failers
+\= Expect no match
     AB
 
 /(a(?i)b)/IB
     ab
     aB
-    *** Failers
+\= Expect no match
     AB
 
 /   (?i)abc/IBx
@@ -832,7 +837,7 @@
 /\Q\Eabc/IB
 
 /x*+\w/IB
-    *** Failers
+\= Expect no match
     xxxxx
 
 /x?+/IB
@@ -851,12 +856,12 @@
 
 /^(\w++|\s++)*$/I
     now is the time for all good men to come to the aid of the party
-    *** Failers
+\= Expect no match
     this is not a line with only words and spaces!
 
 /(\d++)(\w)/I
     12345a
-    *** Failers
+\= Expect no match
     12345+
 
 /a++b/I
@@ -874,7 +879,7 @@
 /\(([^()]++|\([^()]+\))+\)/I
     (abc)
     (abc(def)xyz)
-    *** Failers
+\= Expect no match
     ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /(abc){1,3}+/IB
@@ -937,7 +942,7 @@
     <abc <def> hij>
     <abc<>def>
     <abc<>
-    *** Failers
+\= Expect no match
     <abc
 
 /8J\$WE\<\.rX\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b/IB
@@ -1008,7 +1013,7 @@
 /^a/Im
   abcde
   xy\nabc
-  *** Failers
+\= Expect no match
   xyabc
 
 /c|abc/I
@@ -1020,7 +1025,7 @@
 /abc(?C)def/I
     abcdef
     1234abcdef
-    *** Failers
+\= Expect no match
     abcxyz
     abcxyzf
 
@@ -1029,12 +1034,12 @@
 
 /(?C1)\dabc(?C2)def/I
     1234abcdef
-    *** Failers
+\= Expect no match
     abcdef
 
 /(?C1)\dabc(?C2)def/I
     1234abcdef
-    *** Failers
+\= Expect no match
     abcdef
 
 /(?C255)ab/I
@@ -1046,20 +1051,18 @@
 /(?C12vr)x/I
 
 /abc(?C)def/I
-    *** Failers
     \x83\x0\x61bcdef
 
 /(abc)(?C)de(?C1)f/I
     123abcdef
     123abcdef\=callout_capture
     123abcdefC-\=callout_none
-    *** Failers
+\= Expect no match
     123abcdef\=callout_fail=1
 
 /(?C0)(abc(?C1))*/I
     abcabcabc
     abcabc\=callout_fail=1:3
-    *** Failers
     abcabcabc\=callout_fail=1:3
 
 /(\d{3}(?C))*/I
@@ -1083,9 +1086,11 @@
    abcxyz\=callout_capture
 
 /a(b+)(c*)(?C1)/I
+\= Expect no match
     abbbbbccc\=callout_data=1
 
 /a(b+?)(c*?)(?C1)/I
+\= Expect no match
     abbbbbccc\=callout_data=1
 
 /(?C)abc/I
@@ -1094,30 +1099,20 @@
 
 /(?C)a|b/I
 
-/(?R)/I
-
-/(a|(?R))/I
-
-/(ab|(bc|(de|(?R))))/I
-
 /x(ab|(bc|(de|(?R))))/I
     xab
     xbc
     xde
     xxab
     xxxab
-    *** Failers
+\= Expect no match
     xyab
 
-/(ab|(bc|(de|(?1))))/I
-
-/x(ab|(bc|(de|(?1)x)x)x)/I
-
 /^([^()]|\((?1)*\))*$/I
     abc
     a(b)c
     a(b(c))d
-    *** Failers)
+\= Expect no match)
     a(b(c)d
 
 /^>abc>([^()]|\((?1)*\))*<xyz<$/I
@@ -1133,13 +1128,13 @@
     12
     (((2+2)*-3)-7)
     -12
-    *** Failers
+\= Expect no match
     ((2+2)*-3)-7)
 
 /^(x(y|(?1){2})z)/I
     xyz
     xxyzxyzz
-    *** Failers
+\= Expect no match
     xxyzz
     xxyzxyzxyzz
 
@@ -1150,7 +1145,7 @@
     <abc <def> hij>
     <abc<>def>
     <abc<>
-    *** Failers
+\= Expect no match
     <abc
 
 /(?1)/I
@@ -1183,7 +1178,7 @@
     Satan, oscillate my metallic sonatas!
     A man, a plan, a canal: Panama!
     Able was I ere I saw Elba.
-    *** Failers
+\= Expect no match
     The quick brown fox
 
 /((?(R)a|b))\1(?1)?/I
@@ -1224,6 +1219,7 @@
    aaabbb
    aaabbb\=callout_data=0
    aaabbb\=callout_data=1
+\= Expect no match    
    aaabbb\=callout_data=-1
 
 /ab(?P<one>cd)ef(?P<two>gh)/I
@@ -1246,7 +1242,7 @@
 
 "\[((?P<elem>\d+)(,(?P>elem))*)\]"I
     [10,20,30,5,5,4,4,2,43,23,4234]
-    *** Failers
+\= Expect no match
     []
 
 "\[((?P<elem>\d+)(,(?P>elem))*)?\]"I
@@ -1259,7 +1255,11 @@
 
 /(a(b(?2)c)){0,2}/IB
 
-/[ab]{1}+/IB
+/[ab]{1}+/B
+
+/()(?1){1}/B
+
+/()(?1)/B
 
 /((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/Ii
      Baby Bjorn Active Carrier - With free SHIPPING!!
@@ -1275,6 +1275,7 @@
 
 /abcde/IB,auto_callout
   abcde
+\= Expect no match
   abcdfe
 
 /a*b/IB,auto_callout
@@ -1290,18 +1291,19 @@
 /a+b/IB,auto_callout
   ab
   aaaab
+\= Expect no match 
   aaaacb
 
 /(abc|def)x/IB,auto_callout
   abcx
   defx
-  ** Failers 
+\= Expect no match 
   abcdefzx
 
 /(abc|def)x/IB,auto_callout
   abcx
   defx
-  ** Failers 
+\= Expect no match 
   abcdefzx
 
 /(ab|cd){3,4}/I,auto_callout
@@ -1310,9 +1312,11 @@
   abcdcdcdcdcd
 
 /([ab]{,4}c|xy)/IB,auto_callout
+\= Expect no match 
     Note: that { does NOT introduce a quantifier
 
 /([ab]{,4}c|xy)/IB,auto_callout
+\= Expect no match 
     Note: that { does NOT introduce a quantifier
 
 /([ab]{1,4}c|xy){4,5}?123/IB,auto_callout
@@ -1322,7 +1326,7 @@
   ab cd\=offset=1
 
 /\b.*/Is
-  ab cd\=offset=1
+  ab cd\=startoffset=1
 
 /(?!.bcd).*/I
   Xbcd12345
@@ -1333,7 +1337,7 @@
     abcd\=ps
     abcde\=ps
     the quick brown abc\=ps
-    ** Failers\=ps
+\= Expect no match\=ps
     the quick brown abxyz fox\=ps
 
 "^(0?[1-9]|[12][0-9]|3[01])/(0?[1-9]|1[012])/(20)?\d\d$"I
@@ -1348,7 +1352,7 @@
     02/\=ps
     02/0\=ps
     02/1\=ps
-    ** Failers\=ps
+\= Expect no match\=ps
     \=ps
     123\=ps
     33/4/04\=ps
@@ -1382,7 +1386,7 @@
     1234X
     12345\=ps
     12345X
-    *** Failers
+\= Expect no match
     1X
     123456\=ps
 
@@ -1395,17 +1399,17 @@
 
 /line\nbreak/I,firstline
     this is a line\nbreak
-    ** Failers
+\= Expect no match
     line one\nthis is a line\nbreak in the second line
 
 /line\nbreak/Im,firstline
     this is a line\nbreak
-    ** Failers
+\= Expect no match
     line one\nthis is a line\nbreak in the second line
 
 /(?i)(?-i)AbCd/I
     AbCd
-    ** Failers
+\= Expect no match
     abcd
 
 /a{11111111111111111111}/I
@@ -1460,7 +1464,6 @@
 /^((?P<A>a1)|(?P<A>a2)b)/I,dupnames
     a1b\=copy=A
     a2b\=copy=A
-    ** Failers
     a1b\=copy=Z,copy=A
     
 /(?|(?<a>)(?<b>)(?<a>)|(?<a>)(?<b>)(?<a>))/I,dupnames
@@ -1478,7 +1481,6 @@
 /^((?P<A>a1)|(?P<A>a2)b)/I,dupnames
     a1b\=get=A
     a2b\=get=A
-    ** Failers
     a1b\=get=Z,get=A
 
 /^(?P<A>a)(?P<A>b)/I,dupnames
@@ -1497,9 +1499,9 @@
 
 /^(?P<A>a) (?J:(?P<B>b)(?P<B>c)) (?P<A>d)/I
 
-/ In this next test, J is not set at the outer level; consequently it isn't
-set in the pattern's options; consequently pcre_get_named_substring() produces
-a random value. /Ix
+# In this next test, J is not set at the outer level; consequently it isn't set
+# in the pattern's options; consequently pcre2_substring_get_byname() produces
+# a random value.
 
 /^(?P<A>a) (?J:(?P<B>b)(?P<B>c)) (?P<C>d)/I
     a bc d\=copy=A,copy=B,copy=C
@@ -1507,7 +1509,7 @@ a random value. /Ix
 /^(?P<A>a)?(?(A)a|b)/I
     aabc
     bc
-    ** Failers
+\= Expect no match
     abc
 
 /(?:(?(ZZ)a|b)(?P<ZZ>X))+/I
@@ -1539,7 +1541,7 @@ a random value. /Ix
 /^abc/Im,newline=lf
     xyz\nabc
     xyz\r\nabc
-    ** Failers
+\= Expect no match
     xyz\rabc
     xyzabc\r
     xyzabc\rpqr
@@ -1548,13 +1550,13 @@ a random value. /Ix
 
 /^abc/Im,newline=crlf
     xyz\r\nabclf>
-    ** Failers
+\= Expect no match
     xyz\nabclf
     xyz\rabclf
     
 /^abc/Im,newline=cr
     xyz\rabc
-    ** Failers
+\= Expect no match
     xyz\nabc
     xyz\r\nabc
 
@@ -1612,7 +1614,7 @@ a random value. /Ix
 
 /^a+A\d/IB
     aaaA5
-    ** Failers
+\= Expect no match
     aaaa5
 
 /^a*A\d/IBi
@@ -1784,7 +1786,7 @@ a random value. /Ix
 /^(?:(?(ZZ)a|b)(?<ZZ>X))+/
     bXaX
     bXbX
-    ** Failers
+\= Expect no match
     aXaX
     aXbX
 
@@ -1805,14 +1807,14 @@ a random value. /Ix
 /^((?(abc)a|b)(?<abc>x|y))+/
     bxay
     bxby
-    ** Failers
+\= Expect no match
     axby
 
 /^(((?P=abc)|X)(?<abc>x|y))+/
     XxXxxx
     XxXyyx
     XxXyxx
-    ** Failers
+\= Expect no match
     x
 
 /^(?1)(abc)/
@@ -1845,7 +1847,7 @@ a random value. /Ix
     Satan, oscillate my metallic sonatas!
     A man, a plan, a canal: Panama!
     Able was I ere I saw Elba.
-    *** Failers
+\= Expect no match
     The quick brown fox
 
 /(?=(\w+))\1:/I
@@ -1856,14 +1858,14 @@ a random value. /Ix
 
 /(?'abc'a|b)(?<abc>d|e)\k<abc>{2}/dupnames
     adaa
-    ** Failers
+\= Expect no match
     addd
     adbb
 
 /(?'abc'a|b)(?<abc>d|e)(?&abc){2}/dupnames
     bdaa
     bdab
-    ** Failers
+\= Expect no match
     bddd
 
 /(?(<bc))/
@@ -1885,26 +1887,27 @@ a random value. /Ix
 /(?(DEFINE) abc) xyz/Ix
 
 /(a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\=ovector=0
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4\=ovector=0
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\=ovector=0
 
 /^a.b/newline=lf
     a\rb
-    ** Failers
+\= Expect no match
     a\nb
 
 /^a.b/newline=cr
     a\nb
-    ** Failers
+\= Expect no match
     a\rb
 
 /^a.b/newline=anycrlf
     a\x85b
-    ** Failers
+\= Expect no match
     a\rb
 
 /^a.b/newline=any
-    ** Failers
+\= Expect no match
     a\nb
     a\rb
     a\x85b
@@ -1922,7 +1925,7 @@ a random value. /Ix
     a\x0bb
     a\x0cb
     a\x85b
-    ** Failers
+\= Expect no match
     a\n\rb
 
 /^a\R*b/bsr=unicode
@@ -1945,7 +1948,7 @@ a random value. /Ix
     a\x85b
     a\n\rb
     a\n\r\x85\x0cb
-    ** Failers
+\= Expect no match
     ab
 
 /^a\R{1,3}b/bsr=unicode
@@ -1956,7 +1959,7 @@ a random value. /Ix
     a\r\n\r\n\r\nb
     a\n\r\n\rb
     a\n\n\r\nb
-    ** Failers
+\= Expect no match
     a\n\n\n\rb
     a\r
 
@@ -1980,12 +1983,14 @@ a random value. /Ix
     123axbaxbaxbx456
 
 /(abc)(?i:(?1))/
-   defabcabcxyz
-   DEFabcABCXYZ
+    defabcabcxyz
+\= Expect no match
+    DEFabcABCXYZ
 
 /(abc)(?:(?i)(?1))/
-   defabcabcxyz
-   DEFabcABCXYZ
+    defabcabcxyz
+\= Expect no match
+    DEFabcABCXYZ
 
 /^(a)\g-2/
 
@@ -1999,24 +2004,24 @@ a random value. /Ix
 
 /^a.b/newline=lf
     a\rb
-    *** Failers
+\= Expect no match
     a\nb
 
 /.+foo/
     afoo
-    ** Failers
+\= Expect no match
     \r\nfoo
     \nfoo
 
 /.+foo/newline=crlf
     afoo
     \nfoo
-    ** Failers
+\= Expect no match
     \r\nfoo
 
 /.+foo/newline=any
     afoo
-    ** Failers
+\= Expect no match
     \nfoo
     \r\nfoo
 
@@ -2028,7 +2033,7 @@ a random value. /Ix
 /^$/gm,newline=any
     abc\r\rxyz
     abc\n\rxyz  
-    ** Failers 
+\= Expect no match 
     abc\r\nxyz
 
 /(?m)^$/g,newline=any,aftertext
@@ -2045,7 +2050,7 @@ a random value. /Ix
 
 /^X/m
     XABC
-    ** Failers 
+\= Expect no match 
     XABC\=notbol
 
 /(ab|c)(?-1)/B
@@ -2053,7 +2058,7 @@ a random value. /Ix
 
 /xy(?+1)(abc)/B
     xyabcabc
-    ** Failers
+\= Expect no match
     xyabc  
     
 /x(?-0)y/
@@ -2067,13 +2072,13 @@ a random value. /Ix
 /^(abc)?(?(-1)X|Y)/B
     abcX
     Y
-    ** Failers
+\= Expect no match
     abcY   
     
 /^((?(+1)X|Y)(abc))+/B
     YabcXabc
     YabcXabcXabc
-    ** Failers
+\= Expect no match
     XabcXabc  
 
 /(?(-1)a)/B
@@ -2088,7 +2093,7 @@ a random value. /Ix
 /(?<A>tom|bon)-\k{A}/
     tom-tom
     bon-bon 
-    ** Failers
+\= Expect no match
     tom-bon  
 
 /\g{A/
@@ -2106,7 +2111,7 @@ a random value. /Ix
     xxyzx 
 
 /\H++X/B
-    ** Failers
+\= Expect no match
     XXXX
     
 /\H+\hY/B
@@ -2162,21 +2167,27 @@ a random value. /Ix
 /A(*PRUNE)B(*SKIP)C(*THEN)D(*COMMIT)E(*F)F(*FAIL)G(?!)H(*ACCEPT)I/B
 
 /^a+(*FAIL)/auto_callout
+\= Expect no match
     aaaaaa
     
 /a+b?c+(*FAIL)/auto_callout
+\= Expect no match
     aaabccc
 
 /a+b?(*PRUNE)c+(*FAIL)/auto_callout
+\= Expect no match
     aaabccc
 
 /a+b?(*COMMIT)c+(*FAIL)/auto_callout
+\= Expect no match
     aaabccc
     
 /a+b?(*SKIP)c+(*FAIL)/auto_callout
+\= Expect no match
     aaabcccaaabccc
 
 /a+b?(*THEN)c+(*FAIL)/auto_callout
+\= Expect no match
     aaabccc
     
 /a(*MARK)b/
@@ -2190,6 +2201,7 @@ a random value. /Ix
 /(?1)\c[/
 
 /.+A/newline=crlf
+\= Expect no match
     \r\nA
     
 /\nA/newline=crlf
@@ -2205,33 +2217,33 @@ a random value. /Ix
 
 /(*CR)a.b/
     a\nb
-    ** Failers
+\= Expect no match
     a\rb  
 
 /(*CR)a.b/newline=lf
     a\nb
-    ** Failers
+\= Expect no match
     a\rb  
 
 /(*LF)a.b/newline=CRLF
     a\rb
-    ** Failers
+\= Expect no match
     a\nb  
 
 /(*CRLF)a.b/
     a\rb
     a\nb  
-    ** Failers
+\= Expect no match
     a\r\nb  
 
 /(*ANYCRLF)a.b/newline=CR
-    ** Failers
+\= Expect no match
     a\rb
     a\nb  
     a\r\nb  
 
 /(*ANY)a.b/newline=cr
-    ** Failers
+\= Expect no match
     a\rb
     a\nb  
     a\r\nb  
@@ -2250,7 +2262,7 @@ a random value. /Ix
     a\rb
     a\nb
     a\r\nb
-    ** Failers
+\= Expect no match
     a\x85b
     a\x0bb     
 
@@ -2265,7 +2277,7 @@ a random value. /Ix
     a\rb
     a\nb
     a\r\nb
-    ** Failers
+\= Expect no match
     a\x85b
     a\x0bb     
 
@@ -2280,7 +2292,7 @@ a random value. /Ix
     a\r\n\nb
     a\n\r\rb
     a\r\n\r\n\r\n\r\nb
-    ** Failers
+\= Expect no match
     a\x85\x85b
     a\x0b\x0bb     
 
@@ -2290,7 +2302,7 @@ a random value. /Ix
     a\r\n\n\r\rb
     a\x85\x85b
     a\x0b\x0bb     
-    ** Failers 
+\= Expect no match 
     a\r\r\r\r\rb 
  
 /(*BSR_ANYCRLF)a\Rb/I
@@ -2343,14 +2355,6 @@ a random value. /Ix
 
 /(?P>)/
 
-/(?!\w)(?R)/
-
-/(?=\w)(?R)/
-
-/(?<!\w)(?R)/
-
-/(?<=\w)(?R)/
-
 /[[:foo:]]/
 
 /[[:1234:]]/
@@ -2374,10 +2378,11 @@ a random value. /Ix
 /^(?+1)(?<a>x|y){0}z/
     xzxx
     yzyy 
-    ** Failers
+\= Expect no match
     xxz  
 
 /(\3)(\1)(a)/
+\= Expect no match
     cat
 
 /(\3)(\1)(a)/alt_bsux,allow_empty_class,match_unset_backref,dupnames
@@ -2397,12 +2402,12 @@ a random value. /Ix
 
 /(?1)[]a()b](abc)/
     abcbabc
-    ** Failers 
+\= Expect no match 
     abcXabc
 
 /(?1)[^]a()b](abc)/
     abcXabc
-    ** Failers 
+\= Expect no match 
     abcbabc
 
 /(?2)[]a()b](abc)(xyz)/
@@ -2419,27 +2424,27 @@ a random value. /Ix
 /a[^]b/
 
 /a[]b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
+\= Expect no match
     ab
 
 /a[]+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
+\= Expect no match
     ab 
 
 /a[]*+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
+\= Expect no match
     ab 
 
 /a[^]b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aXb
     a\nb 
-    ** Failers
+\= Expect no match
     ab  
     
 /a[^]+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aXb
     a\nX\nXb 
-    ** Failers
+\= Expect no match
     ab  
 
 /a(?!)b/B
@@ -2462,13 +2467,13 @@ a random value. /Ix
 /xyz/auto_callout
   xyz 
   abcxyz 
-  ** Failers 
+\= Expect no match 
   abc
   abcxypqr  
   
 /xyz/auto_callout,no_start_optimize
   abcxyz 
-  ** Failers 
+\= Expect no match 
   abc
   abcxypqr  
   
@@ -2624,10 +2629,12 @@ a random value. /Ix
     ++++Z1234\=ps
 
 /Z(*F)/
+\= Expect no match
     Z\=ps
     ZA\=ps
     
 /Z(?!)/
+\= Expect no match
     Z\=ps
     ZA\=ps
 
@@ -2680,14 +2687,14 @@ a random value. /Ix
     abcdef
     abcdef\=notempty_atstart
     xyzabcdef\=notempty_atstart
-    ** Failers
+\= Expect no match
     abcdef\=notempty
     xyzabcdef\=notempty
     
 /^(?:(?=abc)|abc\K)/aftertext,startchar
     abcdef
     abcdef\=notempty_atstart
-    ** Failers 
+\= Expect no match 
     abcdef\=notempty
 
 /a?b?/aftertext
@@ -2696,13 +2703,13 @@ a random value. /Ix
     xyzabc\=notempty
     xyzabc\=notempty_atstart
     xyz\=notempty_atstart
-    ** Failers 
+\= Expect no match 
     xyz\=notempty
 
 /^a?b?/aftertext
     xyz
     xyzabc
-    ** Failers 
+\= Expect no match 
     xyzabc\=notempty
     xyzabc\=notempty_atstart
     xyz\=notempty_atstart
@@ -2750,7 +2757,7 @@ a random value. /Ix
 
 /(?i:\g<name>)(?-i:(?<name>a))/
     XaaX
-    ** Failers 
+\= Expect no match 
     XAAX 
 
 /(?-i:\g<+1>)(?i:(a))/
@@ -2835,20 +2842,20 @@ a random value. /Ix
     (?('quote')[a-z]+|[0-9]+)/Ix,dupnames
     a"aaaaa
     b"aaaaa 
-    ** Failers 
+\= Expect no match 
     b"11111
     a"11111 
     
 /^(?|(a)(b)(c)(?<D>d)|(?<D>e)) (?('D')X|Y)/IBx,dupnames
     abcdX
     eX
-    ** Failers
+\= Expect no match
     abcdY
     ey     
     
 /(?<A>a) (b)(c)  (?<A>d  (?(R&A)$ | (?4)) )/IBx,dupnames
     abcdd
-    ** Failers
+\= Expect no match
     abcdde  
 
 /abcd*/
@@ -2882,7 +2889,7 @@ a random value. /Ix
     XABD
     BAD
     ABXABD  
-    ** Failers 
+\= Expect no match 
     ABX 
     BAXBAD  
 
@@ -2893,6 +2900,7 @@ a random value. /Ix
     cat
 
 /(\3)(\1)(a)/I
+\= Expect no match
     cat
 
 /i(?(DEFINE)(?<s>a))/I
@@ -2905,7 +2913,7 @@ a random value. /Ix
     XabX
     XAbX
     CcC 
-    ** Failers
+\= Expect no match
     XABX   
 
 /(?i)a(?s)b|c/B
@@ -2919,13 +2927,15 @@ a random value. /Ix
 
 /^(?&t)*(?(DEFINE)(?<t>.))$/B
 
-/ -- This one is here because Perl gives the match as "b" rather than "ab". I
-     believe this to be a Perl bug. --/
+# This one is here because Perl gives the match as "b" rather than "ab". I
+# believe this to be a Perl bug.
       
 /(?>a\Kb)z|(ab)/
     ab\=startchar 
 
 /(?P<L1>(?P<L2>0|)|(?P>L2)(?P>L1))/
+    abcd
+    0abc 
 
 /abc(*MARK:)pqr/
 
@@ -2937,6 +2947,7 @@ a random value. /Ix
 # bug because replacing the B in the pattern by (B|D) does make it fail.
 
 /A(*COMMIT)B/aftertext,mark
+\= Expect no match
     ACABX
 
 # These should be different, but in Perl they are not, which I think
@@ -2946,13 +2957,14 @@ a random value. /Ix
     AC
 
 /A(*PRUNE)B|A(*PRUNE)C/mark
+\= Expect no match
     AC
     
 # Mark names can be duplicated. Perl doesn't give a mark for this one,
 # though PCRE2 does.
 
 /^A(*:A)B|^X(*:A)Y/mark
-    ** Failers
+\= Expect no match
     XAQQ
     
 # COMMIT at the start of a pattern should be the same as an anchor. Perl 
@@ -2963,16 +2975,19 @@ a random value. /Ix
     ABCDEFG
     
 /(*COMMIT)ABC/no_start_optimize
-    ** Failers
+\= Expect no match
     DEFGABC
     
 /^(ab (c+(*THEN)cd) | xyz)/x
+\= Expect no match
     abcccd  
 
 /^(ab (c+(*PRUNE)cd) | xyz)/x
+\= Expect no match
     abcccd  
 
 /^(ab (c+(*FAIL)cd) | xyz)/x
+\= Expect no match
     abcccd  
     
 # Perl gets some of these wrong
@@ -2991,20 +3006,20 @@ a random value. /Ix
 
 /A\NB./B
     ACBD
-    *** Failers
+\= Expect no match
     A\nB
     ACB\n   
 
 /A\NB./Bs
     ACBD
     ACB\n 
-    *** Failers
+\= Expect no match
     A\nB  
   
 /A\NB/newline=crlf
     A\nB
     A\rB
-    ** Failers
+\= Expect no match
     A\r\nB    
 
 /\R+b/B
@@ -3033,6 +3048,7 @@ a random value. /Ix
     X\x0d\x0a
 
 /X\H++\R/B
+\= Expect no match
     X\x0d\x0a
 
 /(?<=abc)def/
@@ -3067,17 +3083,21 @@ a random value. /Ix
     abc\=ph
 
 /abc\B/
-    abc
     abc\=ps
     abc\=ph
+\= Expect no match
+    abc
 
 /.+/
+\= Bad offsets
+    abc\=offset=4
+    abc\=offset=-4 
+\= Valid data
     abc\=offset=0
     abc\=offset=1
     abc\=offset=2
+\= Expect no match
     abc\=offset=3
-    abc\=offset=4
-    abc\=offset=-4 
 
 /^\cģ/
 
@@ -3116,12 +3136,12 @@ a random value. /Ix
 
 /^(a)*+(\w)/
     aaaaX
-    ** Failers 
+\= Expect no match 
     aaaa
 
 /^(?:a)*+(\w)/
     aaaaX
-    ** Failers 
+\= Expect no match 
     aaaa
 
 /(a)++1234/IB
@@ -3187,7 +3207,7 @@ a random value. /Ix
 
 /(?1)(?:(b(*ACCEPT))){0}c/
     bc
-    ** Failers 
+\= Expect no match 
     b 
 
 /(?1)(?:((*ACCEPT))){0}c/
@@ -3195,18 +3215,22 @@ a random value. /Ix
     c\=notempty
 
 /^.*?(?(?=a)a|b(*THEN)c)/
+\= Expect no match 
     ba
 
 /^.*?(?(?=a)a|bc)/
     ba
 
 /^.*?(?(?=a)a(*THEN)b|c)/
+\= Expect no match 
     ac
 
 /^.*?(?(?=a)a(*THEN)b)c/
+\= Expect no match 
     ac
 
 /^.*?(a(*THEN)b)c/
+\= Expect no match 
     aabc
     
 /^.*? (?1) c (?(DEFINE)(a(*THEN)b))/x
@@ -3223,9 +3247,11 @@ a random value. /Ix
 
 /(*MARK:A)(*SKIP:B)(C|X)/mark
     C
+\= Expect no match 
     D
      
 /(*:A)A+(*SKIP:A)(B|Z)/mark
+\= Expect no match 
     AAAC
 
 # ----------------------------
@@ -3240,6 +3266,7 @@ a random value. /Ix
     
 /(?>(*ACCEPT)b)c/
     c
+\= Expect no match 
     c\=notempty
 
 /(?:(?>(a)))+a%/allaftertext
@@ -3302,14 +3329,13 @@ a random value. /Ix
 
 /[:a[:abc]b:]/B
 
-/(a+|(?R)b)/
-
 /^(a(*:A)(d|e(*:B))z|aeq)/auto_callout
     adz
     aez
     aeqwerty
 
 /.(*F)/
+\= Expect no match
     abc\=ph
 
 /\btype\b\W*?\btext\b\W*?\bjavascript\b/I
@@ -3323,9 +3349,10 @@ a random value. /Ix
     ax
 
 'a*(*ACCEPT)b'aftertext
-    \=notempty_atstart
     abc\=notempty_atstart
     bbb\=notempty_atstart
+\= Expect no match
+    \=notempty_atstart
 
 /(*ACCEPT)a/I,aftertext
     bax
@@ -3335,7 +3362,7 @@ a random value. /Ix
 
 /^(?>a+)(?>(z+))\w/B
     aaaazzzzb
-    ** Failers
+\= Expect no match
     aazz  
 
 /(.)(\1|a(?2))/
@@ -3345,6 +3372,7 @@ a random value. /Ix
     cbbbc
     
 /(.)((?(1)c|a)|a(?2))/
+\= Expect no match
     baa  
 
 /(?P<abn>(?P=abn)xxx)/B
@@ -3353,7 +3381,7 @@ a random value. /Ix
 
 /^a\x41z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aAz
-    *** Failers
+\= Expect no match
     ax41z
 
 /^a[m\x41]z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
@@ -3364,7 +3392,7 @@ a random value. /Ix
 
 /^a\u0041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aAz
-    *** Failers
+\= Expect no match
     au0041z
 
 /^a[m\u0041]z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
@@ -3372,12 +3400,12 @@ a random value. /Ix
 
 /^a\u041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     au041z
-    *** Failers
+\= Expect no match
     aAz
 
 /^a\U0041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aU0041z
-    *** Failers
+\= Expect no match
     aAz
 
 /(?(?=c)c|d)++Y/B
@@ -3402,7 +3430,7 @@ a random value. /Ix
 /(A|P)(*:A)(B|P) | (X|P)(X|P)(*:B)(Y|P)/x,mark
     AABC
     XXYZ 
-    ** Failers
+\= Expect no match
     XAQQ  
     XAQQXZZ  
     AXQQQ 
@@ -3413,12 +3441,12 @@ a random value. /Ix
     
 /(b|q)(*:m)f|a(*:n)w/mark
     aw 
-    ** Failers 
+\= Expect no match 
     abc
 
 /(q|b)(*:m)f|a(*:n)w/mark
     aw 
-    ** Failers 
+\= Expect no match 
     abc
 
 # After a partial match, the behaviour is as for a failure. 
@@ -3666,8 +3694,9 @@ a random value. /Ix
      ad 
 
 /^(?!a(*THEN)b|ac)../
-     ac
      ad 
+\= Expect no match
+     ac
 
 /^(?=a(*THEN)b|ac)/
     ac
@@ -3694,6 +3723,7 @@ a random value. /Ix
     bnn
 
 /(?(?=b(*SKIP)a)bn|bnn)/
+\= Expect no match
     bnn
 
 /(?=b(*THEN)a|)bn|bnn/
@@ -3712,41 +3742,40 @@ a random value. /Ix
 
 /[bcd]*a/B
 
-# A complete set of tests for auto-possessification of character types.
-
-/\D+\D \D+\d \D+\S \D+\s \D+\W \D+\w \D+. \D+\C \D+\R \D+\H \D+\h \D+\V \D+\v \D+\Z \D+\z \D+$/Bx
+# A complete set of tests for auto-possessification of character types, but
+# omitting \C because it might be disabled (it has its own tests).
 
-/\d+\D \d+\d \d+\S \d+\s \d+\W \d+\w \d+. \d+\C \d+\R \d+\H \d+\h \d+\V \d+\v \d+\Z \d+\z \d+$/Bx
+/\D+\D \D+\d \D+\S \D+\s \D+\W \D+\w \D+. \D+\R \D+\H \D+\h \D+\V \D+\v \D+\Z \D+\z \D+$/Bx
 
-/\S+\D \S+\d \S+\S \S+\s \S+\W \S+\w \S+. \S+\C \S+\R \S+\H \S+\h \S+\V \S+\v \S+\Z \S+\z \S+$/Bx
+/\d+\D \d+\d \d+\S \d+\s \d+\W \d+\w \d+. \d+\R \d+\H \d+\h \d+\V \d+\v \d+\Z \d+\z \d+$/Bx
 
-/\s+\D \s+\d \s+\S \s+\s \s+\W \s+\w \s+. \s+\C \s+\R \s+\H \s+\h \s+\V \s+\v \s+\Z \s+\z \s+$/Bx
+/\S+\D \S+\d \S+\S \S+\s \S+\W \S+\w \S+. \S+\R \S+\H \S+\h \S+\V \S+\v \S+\Z \S+\z \S+$/Bx
 
-/\W+\D \W+\d \W+\S \W+\s \W+\W \W+\w \W+. \W+\C \W+\R \W+\H \W+\h \W+\V \W+\v \W+\Z \W+\z \W+$/Bx
+/\s+\D \s+\d \s+\S \s+\s \s+\W \s+\w \s+. \s+\R \s+\H \s+\h \s+\V \s+\v \s+\Z \s+\z \s+$/Bx
 
-/\w+\D \w+\d \w+\S \w+\s \w+\W \w+\w \w+. \w+\C \w+\R \w+\H \w+\h \w+\V \w+\v \w+\Z \w+\z \w+$/Bx
+/\W+\D \W+\d \W+\S \W+\s \W+\W \W+\w \W+. \W+\R \W+\H \W+\h \W+\V \W+\v \W+\Z \W+\z \W+$/Bx
 
-/\C+\D \C+\d \C+\S \C+\s \C+\W \C+\w \C+. \C+\C \C+\R \C+\H \C+\h \C+\V \C+\v \C+\Z \C+\z \C+$/Bx
+/\w+\D \w+\d \w+\S \w+\s \w+\W \w+\w \w+. \w+\R \w+\H \w+\h \w+\V \w+\v \w+\Z \w+\z \w+$/Bx
 
-/\R+\D \R+\d \R+\S \R+\s \R+\W \R+\w \R+. \R+\C \R+\R \R+\H \R+\h \R+\V \R+\v \R+\Z \R+\z \R+$/Bx
+/\R+\D \R+\d \R+\S \R+\s \R+\W \R+\w \R+. \R+\R \R+\H \R+\h \R+\V \R+\v \R+\Z \R+\z \R+$/Bx
 
-/\H+\D \H+\d \H+\S \H+\s \H+\W \H+\w \H+. \H+\C \H+\R \H+\H \H+\h \H+\V \H+\v \H+\Z \H+\z \H+$/Bx
+/\H+\D \H+\d \H+\S \H+\s \H+\W \H+\w \H+. \H+\R \H+\H \H+\h \H+\V \H+\v \H+\Z \H+\z \H+$/Bx
 
-/\h+\D \h+\d \h+\S \h+\s \h+\W \h+\w \h+. \h+\C \h+\R \h+\H \h+\h \h+\V \h+\v \h+\Z \h+\z \h+$/Bx
+/\h+\D \h+\d \h+\S \h+\s \h+\W \h+\w \h+. \h+\R \h+\H \h+\h \h+\V \h+\v \h+\Z \h+\z \h+$/Bx
 
-/\V+\D \V+\d \V+\S \V+\s \V+\W \V+\w \V+. \V+\C \V+\R \V+\H \V+\h \V+\V \V+\v \V+\Z \V+\z \V+$/Bx
+/\V+\D \V+\d \V+\S \V+\s \V+\W \V+\w \V+. \V+\R \V+\H \V+\h \V+\V \V+\v \V+\Z \V+\z \V+$/Bx
 
-/\v+\D \v+\d \v+\S \v+\s \v+\W \v+\w \v+. \v+\C \v+\R \v+\H \v+\h \v+\V \v+\v \v+\Z \v+\z \v+$/Bx
+/\v+\D \v+\d \v+\S \v+\s \v+\W \v+\w \v+. \v+\R \v+\H \v+\h \v+\V \v+\v \v+\Z \v+\z \v+$/Bx
 
-/ a+\D  a+\d  a+\S  a+\s  a+\W  a+\w  a+.  a+\C  a+\R  a+\H  a+\h  a+\V  a+\v  a+\Z  a+\z  a+$/Bx
+/ a+\D  a+\d  a+\S  a+\s  a+\W  a+\w  a+.  a+\R  a+\H  a+\h  a+\V  a+\v  a+\Z  a+\z  a+$/Bx
 
-/\n+\D \n+\d \n+\S \n+\s \n+\W \n+\w \n+. \n+\C \n+\R \n+\H \n+\h \n+\V \n+\v \n+\Z \n+\z \n+$/Bx
+/\n+\D \n+\d \n+\S \n+\s \n+\W \n+\w \n+. \n+\R \n+\H \n+\h \n+\V \n+\v \n+\Z \n+\z \n+$/Bx
 
-/ .+\D  .+\d  .+\S  .+\s  .+\W  .+\w  .+.  .+\C  .+\R  .+\H  .+\h  .+\V  .+\v  .+\Z  .+\z  .+$/Bx
+/ .+\D  .+\d  .+\S  .+\s  .+\W  .+\w  .+.  .+\R  .+\H  .+\h  .+\V  .+\v  .+\Z  .+\z  .+$/Bx
 
-/ .+\D  .+\d  .+\S  .+\s  .+\W  .+\w  .+.  .+\C  .+\R  .+\H  .+\h  .+\V  .+\v  .+\Z  .+\z  .+$/Bsx
+/ .+\D  .+\d  .+\S  .+\s  .+\W  .+\w  .+.  .+\R  .+\H  .+\h  .+\V  .+\v  .+\Z  .+\z  .+$/Bsx
 
-/\D+$  \d+$  \S+$  \s+$  \W+$  \w+$  \C+$  \R+$  \H+$  \h+$  \V+$  \v+$   a+$  \n+$   .+$  .+$/Bmx
+/ \D+$  \d+$  \S+$  \s+$  \W+$  \w+$  \R+$  \H+$  \h+$  \V+$ \v+$  a+$   \n+$  .+$  .+$/Bmx
 
 /(?=a+)a(a+)++a/B
 
@@ -3889,7 +3918,7 @@ a random value. /Ix
     a /red/ thing 
     red is a colour
     put it all on red  
-    ** Failers
+\= Expect no match
     no reduction
     Alfred Winifred
     
@@ -3899,6 +3928,7 @@ a random value. /Ix
     abcd\=startchar
 
 /abcd/newline=lf,firstline
+\= Expect no match
     xx\nxabcd
     
 # Test stack guard external calls.
@@ -3937,7 +3967,7 @@ a random value. /Ix
 /^(?(?=abc)\w{3}:|\d\d)$/
     abc:
     12
-    *** Failers
+\= Expect no match
     123
     xyz    
 
@@ -3975,13 +4005,13 @@ a random value. /Ix
 
 /(?(VERSION=8)yes|no){3}/I
     yesnononoyes
-    ** Failers
+\= Expect no match
     yesno   
 
 /(?:(?<VERSION>abc)|xyz)(?(VERSION)yes|no)/I
     abcyes
     xyzno
-    ** Failers
+\= Expect no match
     abcno
     xyzyes    
 
@@ -3991,6 +4021,8 @@ a random value. /Ix
 
 /(?(VERSION>=10.0.0)yes|no)/
 
+/(?(VERSION=10.101)yes|no)/
+
 /abcd/I
 
 /abcd/I,no_start_optimize
@@ -4008,8 +4040,6 @@ a random value. /Ix
 
 /(((((a)))))/parens_nest_limit=2
 
-# Tests for pcre2_substitute()
-
 /abc/replace=XYZ
     123123
     123abc123
@@ -4087,13 +4117,58 @@ a random value. /Ix
     
 /(.)(.)/g,replace=$2$1
     abcdefgh  
+    
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=${*MARK}
+    apple lemon blackberry
+    apple strudel
+    fruitless  
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/replace=${*MARK} sauce,
+    apple lemon blackberry
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=<$*MARK>
+    apple lemon blackberry
+    apple strudel
+    fruitless  
+    
+/(*:pear)apple/g,replace=${*MARKING} 
+    apple lemon blackberry
+
+/(*:pear)apple/g,replace=${*MARK-time
+    apple lemon blackberry
+
+/(*:pear)apple/g,replace=${*mark} 
+    apple lemon blackberry
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=<$*MARKET>
+    apple lemon blackberry
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=[22]${*MARK}
+    apple lemon blackberry
+    apple lemon blackberry\=substitute_overflow_length
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=[23]${*MARK}
+    apple lemon blackberry
 
-# End of substitute tests 
+/abc/
+    123abc123\=replace=[9]XYZ
+    123abc123\=substitute_overflow_length,replace=[9]XYZ
+    123abc123\=substitute_overflow_length,replace=[6]XYZ
+    123abc123\=substitute_overflow_length,replace=[1]XYZ
+    123abc123\=substitute_overflow_length,replace=[0]XYZ
+
+/a(b)c/
+    123abc123\=replace=[9]x$1z
+    123abc123\=substitute_overflow_length,replace=[9]x$1z
+    123abc123\=substitute_overflow_length,replace=[6]x$1z
+    123abc123\=substitute_overflow_length,replace=[1]x$1z
+    123abc123\=substitute_overflow_length,replace=[0]x$1z
 
 "((?=(?(?=(?(?=(?(?=()))))))))"
     a
 
 "(?(?=)==)(((((((((?=)))))))))"
+\= Expect no match
     a
 
 /(a)(b)|(c)/
@@ -4117,9 +4192,11 @@ a random value. /Ix
 /^abc/info,no_dotstar_anchor
 
 /.*\d/info,auto_callout
+\= Expect no match
     aaa
 
 /.*\d/info,no_dotstar_anchor,auto_callout
+\= Expect no match
     aaa
 
 /.*\d/dotall,info
@@ -4161,7 +4238,7 @@ a random value. /Ix
 /(?(?=0)(?=00)?00765|(?!3).56)/
      00765
      456
-     ** Failers
+\= Expect no match
      356   
 
 '^(a)*+(\w)'
@@ -4233,7 +4310,7 @@ a random value. /Ix
 
 /(?(?!)a|b)/
     bbb
-    ** Failers 
+\= Expect no match 
     aaa 
 
 # JIT gives a different error message for the infinite recursion
@@ -4265,9 +4342,8 @@ a random value. /Ix
 
 /((?2){73}(?2))((?1))/info
 
-/ab\Cde/never_backslash_c
-
 /abc/
+\= Expect no match
     \[9x!xxx(]{9999}
     
 /(abc)*/
@@ -4327,4 +4403,401 @@ a random value. /Ix
 
 /^(?:(?(1)x|)+)+$()/B
 
+/[[:>:]](?<)/
+
+/((?x)(*:0))#(?'/
+
+/(?C$[$)(?<]/
+
+/(?C$)$)(?<]/
+
+/(?(R))*+/B
+    abcd
+
+/((?x)(?#))#(?'/
+
+/((?x)(?#))#(?'abc')/I
+
+/[[:\\](?<[::]/
+
+/[[:\\](?'abc')[a:]/I
+
+"[[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[:::::::::::::::::[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[[[:::E[[[:[:[[:[:::[[:::E[[[:[:[[:'[:::::E[[[:[::::::[[[:[[[[[[[::E[[[:[::::::[[[:[[[[[[[[:[[::[::::[[:::::::[[:[[[[[[[:[[::[:[[:[~"
+
+/()(?(R)0)*+/B
+
+/(?R-:(?</
+
+/(?(?C{\Q})(?!(?'/
+
+/(?(?C{\Q})(?!(?'abc')))/I
+
+/(?1){3918}(((((0(\k'R'))))(?J)(?'R'(?'R'\3){99})))/I
+
+/(?|(aaa)|(b))\g{1}/I
+
+/(?|(aaa)|(b))(?1)/I
+
+/(?|(aaa)|(b))/I
+
+/(?|(?'a'aaa)|(?'a'b))\k'a'/I
+
+/(?|(?'a'aaa)|(?'a'b))(?'a'cccc)\k'a'/I,dupnames
+
+/ab{3cd/
+    ab{3cd
+
+/ab{3,cd/
+    ab{3,cd
+
+/ab{3,4a}cd/
+    ab{3,4a}cd
+
+/{4,5a}bc/
+    {4,5a}bc
+
+/\x0{ab}/
+    \0{ab} 
+
+/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/
+    ababababbbabZXXXX
+
+/.*?a(*PRUNE)b/
+    aab
+
+/.*?a(*PRUNE)b/s
+    aab
+
+/^a(*PRUNE)b/s
+\= Expect no match
+    aab
+
+/.*?a(*SKIP)b/
+    aab
+
+/(?(8000000000/
+
+/((?(R8000000000)))/
+
+/0(?0)|(1)(*THEN)(*SKIP:0)(*FAIL)/
+\= Expect no match
+    01
+
+/(?(1)()\983040\2)/
+
+/(*LIMIT_MATCH=)abc/
+
+/(*CRLF)(*LIMIT_MATCH=)abc/
+
+/(?:ab)?(?:ab)(?:ab)/
+    abab
+    ababab
+\= Expect no match
+    aba
+
+/((*MARK:A))++a(*SKIP:B)b/
+\= Expect no match
+    aacb
+
+/(*MARK:a\zb)z/alt_verbnames 
+    
+/(*:ab\t(d\)c)xxx/
+
+/(*:ab\t(d\)c)xxx/alt_verbnames,mark
+    cxxxz
+
+/(*:A\Qxx)x\EB)x/alt_verbnames,mark
+    x
+    
+/(*:A\ExxxB)x/alt_verbnames,mark
+    x 
+    
+/(*: A \ and #comment
+     \ B)x/x,alt_verbnames,mark
+    x  
+    
+/(*:A
+B)x/alt_verbnames,mark 
+    x
+
+/(*:abc\Qpqr)/alt_verbnames
+
+/abc/use_offset_limit
+    1234abcde\=offset_limit=100
+    1234abcde\=offset_limit=9
+    1234abcde\=offset_limit=4
+    1234abcde\=offset_limit=4,offset=4
+\= Expect no match
+    1234abcde\=offset_limit=4,offset=5
+    1234abcde\=offset_limit=3
+
+/(?<=abc)/use_offset_limit
+    1234abc\=offset_limit=7
+\= Expect no match
+    1234abc\=offset_limit=6
+    
+/A/g,replace=-,use_offset_limit
+    XAXAXAXAXA\=offset_limit=4
+
+/abc/
+\= Expect error
+    1234abcde\=offset_limit=4
+
+/^\w/m,use_offset_limit
+    \n..\naa\=offset_limit=3
+    \n..\naa\=offset_limit=4
+
+/abcd/null_context
+    abcd\=null_context
+\= Expect error     
+    abcd\=null_context,find_limits
+    abcd\=allusedtext,startchar 
+
+/abcd/replace=w\rx\x82y\o{333}z(\Q12\$34$$\x34\E5$$),substitute_extended
+    abcd
+    
+/a(bc)(DE)/replace=a\u$1\U$1\E$1\l$2\L$2\Eab\Uab\LYZ\EDone,substitute_extended
+    abcDE
+ 
+/abcd/replace=xy\kz,substitute_extended
+    abcd
+
+/a(?:(b)|(c))/substitute_extended,replace=X${1:+1:-1}X${2:+2:-2}
+    ab
+    ac
+    ab\=replace=${1:+$1\:$1:$2}
+    ac\=replace=${1:+$1\:$1:$2}
+
+/a(?:(b)|(c))/substitute_extended,replace=X${1:-1:-1}X${2:-2:-2}
+    ab
+    ac
+
+/(a)/substitute_extended,replace=>${1:+\Q$1:{}$$\E+\U$1}<
+    a
+
+/X(b)Y/substitute_extended
+    XbY\=replace=x${1:+$1\U$1}y
+    XbY\=replace=\Ux${1:+$1$1}y
+
+/a/substitute_extended,replace=${*MARK:+a:b}
+    a
+
+/(abcd)/replace=${1:+xy\kz},substitute_extended
+    abcd
+
+/(abcd)/
+    abcd\=replace=${1:+xy\kz},substitute_extended
+
+/abcd/substitute_extended,replace=>$1<
+    abcd
+
+/abcd/substitute_extended,replace=>xxx${xyz}<<<
+    abcd
+
+/(?J)(?:(?<A>a)|(?<A>b))/replace=<$A>
+    [a]
+    [b] 
+\= Expect error     
+    (a)\=ovector=1
+
+/(a)|(b)/replace=<$1>
+\= Expect error
+    b
+
+/(aa)(BB)/substitute_extended,replace=\U$1\L$2\E$1..\U$1\l$2$1
+    aaBB
+
+/^(o(\1{72}{\"{\\{00000059079}\d*){74}}){19}/I
+
+/((p(?'K/
+
+/((p(?'K/no_auto_capture
+
+/abc/replace=A$3123456789Z
+    abc
+
+/(?<!a{65535}a{5})x/I
+
+/(?<!a{65535})x/I
+
+/(?=a\K)/replace=z
+    BaCaD
+    
+/(?'abcdefghijklmnopqrstuvwxyzABCDEFG'toolong)/
+ 
+/(?'abcdefghijklmnopqrstuvwxyzABCDEF'justright)/ 
+
+# These two use zero-termination
+/abcd/max_pattern_length=3
+
+/abc/max_pattern_length=3
+
+# These two, being hex, pass the length
+/abcdefab/hex,max_pattern_length=3
+
+/abcdef/hex,max_pattern_length=3
+
+# These two patterns used to take a long time to compile
+
+"(.*)
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))"xI
+
+"(?<=a()
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+a)"xI
+
+# When (?| is used and groups of the same number may be different,
+# we have to rely on a count to catch overly complicated patterns.
+
+"(?|()|())(.*)
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))"xI
+
+"(?|()|())(?<=a()
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+a)"xI
+
+# Test the use of malloc for caching group information when there are more
+# groups than fit into the on-stack workspace.
+
+/\[()]{1024}/I,expand
+
+# Test minlength capped at 65535
+
+/(A{65000})\1{65000}/I
+
+# Test group scans when numbers are not unique
+
+/(?|()+|(a)+)/BI
+
+/(?|(a)+|()+)/BI
+
+/(?|()|(a))/BI
+
+/(?|(a)|())/BI
+
+# Test CRLF handling in empty string substitutions
+
+/^$/gm,newline=anycrlf,replace=-
+    X\r\n\r\nY
+
+/^$/gm,newline=crlf,replace=-
+    X\r\n\r\nY
+
+/^$/gm,newline=any,replace=-
+    X\r\n\r\nY
+
+"(*ANYCRLF)(?m)^(.*[^0-9\r\n].*|)$"g,replace=NaN
+    15\r\nfoo\r\n20\r\nbar\r\nbaz\r\n\r\n20
+
+/a[[:punct:]b]/bincode
+
+/a[b[:punct:]]/bincode
+
+/L(?#(|++<!(2)?/B
+
+/L(?#(|++<!(2)?/B,no_auto_possess
+
+/L(?#(|++<!(2)?/B,auto_callout
+
+/L(?#(|++<!(2)?/B,no_auto_possess,auto_callout
+
+/(A*)\E+/B,auto_callout
+
+/()\Q\E*]/B,auto_callout
+    a[bc]d
+
+/\x8a+f|;T?(*:;.'?`(\xeap ){![^()!y*''C*(?';]{1;(\x08)/B,alt_verbnames,dupnames,extended
+
+# Tests for NULL characters in comments and verb "names" and callouts
+
+# /A#B\x00C\x0aZ/
+/41 23 42 00 43 0a 5a/Bx,hex
+
+# /A+#B\x00C\x0a+/
+/41 2b 23 42 00 43 0a 2b/Bx,hex
+
+# /A(*:B\x00W#X\00Y\x0aC)Z/
+/41 28 2a 3a 42 00 57 23 58 00 59 0a 43 29 5a/Bx,hex,alt_verbnames
+
+# /A(*:B\x00W#X\00Y\x0aC)Z/
+/41 28 2a 3a 42 00 57 23 58 00 59 0a 43 29 5a/Bx,hex
+
+# /A(?C{X\x00Y})B/
+/41 28 3f 43 7b 58 00 59 7d 29 42/B,hex
+
+# /A(?#X\x00Y)B/
+/41 28 3f 23 7b 00 7d 29 42/B,hex
+
+# Tests for leading comment in extended patterns
+
+/ (?-x):?/extended
+
+/(?-x):?/extended
+
+/0b 28 3f 2d 78 29 3a/hex,extended
+
+/#comment
+(?-x):?/extended
+
+/(8(*:6^\x09x\xa6l\)6!|\xd0:[^:|)\x09d\Z\d{85*m(?'(?<1!)*\W[*\xff]!!h\w]*\xbe;/alt_bsux,alt_verbnames,allow_empty_class,dollar_endonly,extended,multiline,never_utf,no_dotstar_anchor,no_start_optimize
+
+/a|(b)c/replace=>$1<,substitute_unset_empty
+    cat
+    xbcom 
+
+/a|(b)c/
+    cat\=replace=>$1<
+    cat\=replace=>$1<,substitute_unset_empty
+    xbcom\=replace=>$1<,substitute_unset_empty
+
+/a|(b)c/substitute_extended
+    cat\=replace=>${2:-xx}<
+    cat\=replace=>${2:-xx}<,substitute_unknown_unset
+    cat\=replace=>${X:-xx}<,substitute_unknown_unset
+
+/a|(?'X'b)c/replace=>$X<,substitute_unset_empty
+    cat
+    xbcom 
+
+/a|(?'X'b)c/replace=>$Y<,substitute_unset_empty
+    cat
+    cat\=substitute_unknown_unset 
+    cat\=substitute_unknown_unset,-substitute_unset_empty 
+
+/a|(b)c/replace=>$2<,substitute_unset_empty
+    cat
+    cat\=substitute_unknown_unset 
+    cat\=substitute_unknown_unset,-substitute_unset_empty 
+
+/()()()/use_offset_limit
+    \=ovector=11000000000
+    \=callout_fail=11000000000
+    \=callout_fail=1:11000000000
+    \=callout_data=11000000000 
+    \=callout_data=-11000000000 
+    \=offset_limit=1100000000000000000000 
+    \=copy=11000000000 
+
+/(*MARK:A\x00b)/mark
+    abc
+
+/(*MARK:A\x00b)/mark,alt_verbnames
+    abc
+
+# /(*MARK:A\x00b)/
+/28 2a 4d 41 52 4b 3a 41 00 62 29/mark,hex
+    abc
+
+# /(*MARK:A\x00b)/
+/28 2a 4d 41 52 4b 3a 41 00 62 29/mark,hex,alt_verbnames
+    abc
+
 # End of testinput2 
diff --git a/testdata/testinput20 b/testdata/testinput20
new file mode 100644
index 0000000..9ec3174
--- /dev/null
+++ b/testdata/testinput20
@@ -0,0 +1,63 @@
+# This set of tests exercises the serialization/deserialization functions in
+# the library. It does not use UTF or JIT.
+
+#forbid_utf
+
+# Compile several patterns, push them onto the stack, and then write them
+# all to a file.
+
+#pattern push
+
+/(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT))
+  (?(DEFINE)
+  (?<NAME_PAT>[a-z]+)
+  (?<ADDRESS_PAT>\d+)
+  )/x
+/^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i
+
+#save testsaved1
+
+# Do it again for some more patterns.
+
+/(*MARK:A)(*SKIP:B)(C|X)/mark
+/(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames
+
+#save testsaved2
+#pattern -push
+
+# Reload the patterns, then pop them one by one and check them.
+
+#load testsaved1
+#load testsaved2
+
+#pop info
+    foofoo             
+    barbar
+    
+#pop mark
+    C
+\= Expect no match     
+    D 
+    
+#pop
+    AmanaplanacanalPanama   
+
+#pop info
+    metcalfe 33
+    
+# Check for an error when different tables are used.
+
+/abc/push,tables=1
+/xyz/push,tables=2
+#save testsaved1
+
+#pop
+    xyz
+
+#pop
+    abc
+
+#pop should give an error
+    pqr
+
+# End of testinput20
diff --git a/testdata/testinput21 b/testdata/testinput21
new file mode 100644
index 0000000..1d1fbed
--- /dev/null
+++ b/testdata/testinput21
@@ -0,0 +1,16 @@
+# These are tests of \C that do not involve UTF. They are not run when \C is
+# disabled by compiling with --enable-never-backslash-C.
+
+/\C+\D \C+\d \C+\S \C+\s \C+\W \C+\w \C+. \C+\R \C+\H \C+\h \C+\V \C+\v \C+\Z \C+\z \C+$/Bx
+
+/\D+\C \d+\C \S+\C \s+\C \W+\C \w+\C .+\C \R+\C \H+\C \h+\C \V+\C \v+\C a+\C \n+\C \C+\C/Bx
+
+/ab\Cde/never_backslash_c
+
+/ab\Cde/info
+    abXde
+    
+/(?<=ab\Cde)X/
+    abZdeX
+
+# End of testinput21
diff --git a/testdata/testinput22 b/testdata/testinput22
new file mode 100644
index 0000000..f684cf4
--- /dev/null
+++ b/testdata/testinput22
@@ -0,0 +1,95 @@
+# Tests of \C when Unicode support is available. Note that \C is not supported
+# for DFA matching in UTF mode, so this test is not run with -dfa. The output
+# of this test is different in 8-, 16-, and 32-bit modes. Some tests may match
+# in some widths and not in others.
+
+/ab\Cde/utf,info
+    abXde
+
+# This should produce an error diagnostic (\C in UTF lookbehind)
+
+/(?<=ab\Cde)X/utf
+
+# Autopossessification tests
+
+/\C+\X \X+\C/Bx
+
+/\C+\X \X+\C/Bx,utf
+
+/\C\X*TӅ;

+{0,6}\v+
F
+/utf
+\= Expect no match
+    Ӆ\x0a
+
+/\C(\W?ſ)'?{{/utf
+\= Expect no match
+    \\C(\\W?ſ)'?{{
+
+/X(\C{3})/utf
+    X\x{1234}
+    X\x{11234}Y
+    X\x{11234}YZ
+
+/X(\C{4})/utf
+    X\x{1234}YZ
+    X\x{11234}YZ
+    X\x{11234}YZW
+
+/X\C*/utf
+    XYZabcdce
+
+/X\C*?/utf
+    XYZabcde
+
+/X\C{3,5}/utf
+    Xabcdefg
+    X\x{1234}
+    X\x{1234}YZ
+    X\x{1234}\x{512}
+    X\x{1234}\x{512}YZ
+    X\x{11234}Y
+    X\x{11234}YZ
+    X\x{11234}\x{512}
+    X\x{11234}\x{512}YZ
+    X\x{11234}\x{512}\x{11234}Z
+
+/X\C{3,5}?/utf
+    Xabcdefg
+    X\x{1234}
+    X\x{1234}YZ
+    X\x{1234}\x{512}
+    X\x{11234}Y
+    X\x{11234}YZ
+    X\x{11234}\x{512}YZ
+    X\x{11234}
+
+/a\Cb/utf
+    aXb
+    a\nb
+    a\x{100}b
+
+/a\C\Cb/utf
+    a\x{100}b
+    a\x{12257}b
+    a\x{12257}\x{11234}b
+
+/ab\Cde/utf
+    abXde
+
+# This one is here not because it's different to Perl, but because the way
+# the captured single code unit is displayed. (In Perl it becomes a character,
+# and you can't tell the difference.)
+
+/X(\C)(.*)/utf
+    X\x{1234}
+    X\nabc
+
+# This one is here because Perl gives out a grumbly error message (quite
+# correctly, but that messes up comparisons).
+
+/a\Cb/utf
+\= Expect no match in 8-bit mode
+    a\x{100}b
+
+# End of testinput22
diff --git a/testdata/testinput23 b/testdata/testinput23
new file mode 100644
index 0000000..d0a9bc4
--- /dev/null
+++ b/testdata/testinput23
@@ -0,0 +1,7 @@
+# This test is run when PCRE2 has been built with --enable-never-backslash-C,
+# which disables the use of \C. All we can do is check that it gives the 
+# correct error message.
+
+/a\Cb/
+
+# End of testinput23
diff --git a/testdata/testinput3 b/testdata/testinput3
index 2e1fbf5..71e95fe 100644
--- a/testdata/testinput3
+++ b/testdata/testinput3
@@ -8,35 +8,35 @@
 #forbid_utf
 
 /^[\w]+/
-    *** Failers
+\= Expect no match
     �cole
 
 /^[\w]+/locale=fr_FR
     �cole
 
 /^[\w]+/
-    *** Failers
+\= Expect no match
     �cole
 
 /^[\W]+/
     �cole
 
 /^[\W]+/locale=fr_FR
-    *** Failers
+\= Expect no match
     �cole
 
 /[\b]/
     \b
-    *** Failers
+\= Expect no match
     a
 
 /[\b]/locale=fr_FR
     \b
-    *** Failers
+\= Expect no match
     a
 
 /^\w+/
-    *** Failers
+\= Expect no match
     �cole
 
 /^\w+/locale=fr_FR
@@ -46,12 +46,12 @@
     �cole
 
 /(.+)\b(.+)/locale=fr_FR
-    *** Failers
+\= Expect no match
     �cole
 
 /�cole/i
     �cole
-    *** Failers
+\= Expect no match
     �cole
 
 /�cole/i,locale=fr_FR
@@ -72,7 +72,7 @@
 
 /^[\xc8-\xc9]/
     �cole
-    *** Failers 
+\= Expect no match
     �cole
 
 /\W+/
diff --git a/testdata/testinput4 b/testdata/testinput4
index 421b3fb..ce9145d 100644
--- a/testdata/testinput4
+++ b/testdata/testinput4
@@ -3,20 +3,21 @@
 # some of the property tests may differ because of different versions of
 # Unicode in use by PCRE2 and Perl.
 
+#newline_default lf anycrlf any
 #perltest
 
 /a.b/utf
     acb
     a\x7fb
     a\x{100}b
-    *** Failers
+\= Expect no match
     a\nb
 
 /a(.{3})b/utf
     a\x{4000}xyb
     a\x{4000}\x7fyb
     a\x{4000}\x{100}yb
-    *** Failers
+\= Expect no match
     a\x{4000}b
     ac\ncb
 
@@ -54,7 +55,7 @@
     a\x{1234}xyb
     a\x{1234}\x{4321}yb
     a\x{1234}\x{4321}\x{3412}b
-    *** Failers
+\= Expect no match
     a\x{1234}b
     ac\ncb
 
@@ -64,7 +65,7 @@
     a\x{1234}\x{4321}\x{3412}b
     axxxxbcdefghijb
     a\x{1234}\x{4321}\x{3412}\x{3421}b
-    *** Failers
+\= Expect no match
     a\x{1234}b
 
 /a(.{3,}?)b/utf
@@ -73,7 +74,7 @@
     a\x{1234}\x{4321}\x{3412}b
     axxxxbcdefghijb
     a\x{1234}\x{4321}\x{3412}\x{3421}b
-    *** Failers
+\= Expect no match
     a\x{1234}b
 
 /a(.{3,5})b/utf
@@ -84,7 +85,7 @@
     a\x{1234}\x{4321}\x{3412}\x{3421}b
     axbxxbcdefghijb
     axxxxxbcdefghijb
-    *** Failers
+\= Expect no match
     a\x{1234}b
     axxxxxxbcdefghijb
 
@@ -96,12 +97,12 @@
     a\x{1234}\x{4321}\x{3412}\x{3421}b
     axbxxbcdefghijb
     axxxxxbcdefghijb
-    *** Failers
+\= Expect no match
     a\x{1234}b
     axxxxxxbcdefghijb
 
 /^[a\x{c0}]/utf
-    *** Failers
+\= Expect no match
     \x{100}
 
 /(?<=aXb)cd/utf
@@ -115,19 +116,19 @@
 
 /(?:\x{100}){3}b/utf
     \x{100}\x{100}\x{100}b
-    *** Failers
+\= Expect no match
     \x{100}\x{100}b
 
 /\x{ab}/utf
     \x{ab}
     \xc2\xab
-    *** Failers
+\= Expect no match
     \x00{ab}
 
 /(?<=(.))X/utf
     WXYZ
     \x{256}XYZ
-    *** Failers
+\= Expect no match
     XYZ
 
 /[^a]+/g,utf
@@ -214,199 +215,185 @@
 
 /\D+/utf
     12abcd34
-    *** Failers
+\= Expect no match
     1234
 
 /\D{2,3}/utf
     12abcd34
     12ab34
-    *** Failers
+\= Expect no match
     1234
     12a34
 
 /\D{2,3}?/utf
     12abcd34
     12ab34
-    *** Failers
+\= Expect no match
     1234
     12a34
 
 /\d+/utf
     12abcd34
-    *** Failers
 
 /\d{2,3}/utf
     12abcd34
     1234abcd
-    *** Failers
+\= Expect no match
     1.4
 
 /\d{2,3}?/utf
     12abcd34
     1234abcd
-    *** Failers
+\= Expect no match
     1.4
 
 /\S+/utf
     12abcd34
-    *** Failers
+\= Expect no match
     \    \
 
 /\S{2,3}/utf
     12abcd34
     1234abcd
-    *** Failers
+\= Expect no match
     \     \
 
 /\S{2,3}?/utf
     12abcd34
     1234abcd
-    *** Failers
+\= Expect no match
     \     \
 
 />\s+</utf,aftertext
     12>      <34
-    *** Failers
 
 />\s{2,3}</utf,aftertext
     ab>  <cd
     ab>   <ce
-    *** Failers
+\= Expect no match
     ab>    <cd
 
 />\s{2,3}?</utf,aftertext
     ab>  <cd
     ab>   <ce
-    *** Failers
+\= Expect no match
     ab>    <cd
 
 /\w+/utf
     12      34
-    *** Failers
+\= Expect no match
     +++=*!
 
 /\w{2,3}/utf
     ab  cd
     abcd ce
-    *** Failers
+\= Expect no match
     a.b.c
 
 /\w{2,3}?/utf
     ab  cd
     abcd ce
-    *** Failers
+\= Expect no match
     a.b.c
 
 /\W+/utf
     12====34
-    *** Failers
+\= Expect no match
     abcd
 
 /\W{2,3}/utf
     ab====cd
     ab==cd
-    *** Failers
+\= Expect no match
     a.b.c
 
 /\W{2,3}?/utf
     ab====cd
     ab==cd
-    *** Failers
+\= Expect no match
     a.b.c
 
 /[\x{100}]/utf
     \x{100}
     Z\x{100}
     \x{100}Z
-    *** Failers
 
 /[Z\x{100}]/utf
     Z\x{100}
     \x{100}
     \x{100}Z
-    *** Failers
 
 /[\x{100}\x{200}]/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
 
 /[\x{100}-\x{200}]/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   ab\x{111}cd
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    ab\x{111}cd
 
 /[z-\x{200}]/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   ab\x{111}cd
-   abzcd
-   ab|cd
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    ab\x{111}cd
+    abzcd
+    ab|cd
 
 /[Q\x{100}\x{200}]/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   Q?
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    Q?
 
 /[Q\x{100}-\x{200}]/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   ab\x{111}cd
-   Q?
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    ab\x{111}cd
+    Q?
 
 /[Qz-\x{200}]/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   ab\x{111}cd
-   abzcd
-   ab|cd
-   Q?
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    ab\x{111}cd
+    abzcd
+    ab|cd
+    Q?
 
 /[\x{100}\x{200}]{1,3}/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   ab\x{200}\x{100}\x{200}\x{100}cd
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    ab\x{200}\x{100}\x{200}\x{100}cd
 
 /[\x{100}\x{200}]{1,3}?/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   ab\x{200}\x{100}\x{200}\x{100}cd
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    ab\x{200}\x{100}\x{200}\x{100}cd
 
 /[Q\x{100}\x{200}]{1,3}/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   ab\x{200}\x{100}\x{200}\x{100}cd
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    ab\x{200}\x{100}\x{200}\x{100}cd
 
 /[Q\x{100}\x{200}]{1,3}?/utf
-   ab\x{100}cd
-   ab\x{200}cd
-   ab\x{200}\x{100}\x{200}\x{100}cd
-   *** Failers
+    ab\x{100}cd
+    ab\x{200}cd
+    ab\x{200}\x{100}\x{200}\x{100}cd
 
 /(?<=[\x{100}\x{200}])X/utf
     abc\x{200}X
     abc\x{100}X
-    *** Failers
+\= Expect no match
     X
 
 /(?<=[Q\x{100}\x{200}])X/utf
     abc\x{200}X
     abc\x{100}X
     abQX
-    *** Failers
+\= Expect no match
     X
 
 /(?<=[\x{100}\x{200}]{3})X/utf
     abc\x{100}\x{200}\x{100}X
-    *** Failers
+\= Expect no match
     abc\x{200}X
     X
 
@@ -414,7 +401,7 @@
     AX
     \x{150}X
     \x{500}X
-    *** Failers
+\= Expect no match
     \x{100}X
     \x{200}X
 
@@ -422,7 +409,7 @@
     AX
     \x{150}X
     \x{500}X
-    *** Failers
+\= Expect no match
     \x{100}X
     \x{200}X
     QX
@@ -430,7 +417,7 @@
 /[^\x{100}-\x{200}]X/utf
     AX
     \x{500}X
-    *** Failers
+\= Expect no match
     \x{100}X
     \x{150}X
     \x{200}X
@@ -439,7 +426,7 @@
     z
     Z
     \x{100}
-    *** Failers
+\= Expect no match
     \x{102}
     y
 
@@ -457,18 +444,23 @@
     \x{123}
 
 /^[ac]*b/utf
+\= Expect no match
   xb
 
 /^[ac\x{100}]*b/utf
+\= Expect no match
   xb
 
 /^[^x]*b/i,utf
+\= Expect no match
   xb
 
 /^[^x]*b/utf
+\= Expect no match
   xb
 
 /^\d*b/utf
+\= Expect no match
   xb
 
 /(|a)/g,utf
@@ -613,9 +605,11 @@
     AAB\x{123}BAA
 
 /(abc)\1/i,utf
+\= Expect no match
    abc
 
 /(abc)\1/utf
+\= Expect no match
    abc
 
 /a(*:a\x{1234}b)/utf,mark
@@ -696,22 +690,27 @@
 
 /^\d*\w{4}/utf
     1234
+\= Expect no match     
     123
 
 /^[^b]*\w{4}/utf
     aaaa
+\= Expect no match     
     aaa
 
 /^[^b]*\w{4}/i,utf
     aaaa
+\= Expect no match     
     aaa
 
 /^\x{100}*.{4}/utf
     \x{100}\x{100}\x{100}\x{100}
+\= Expect no match     
     \x{100}\x{100}\x{100}
 
 /^\x{100}*.{4}/i,utf
     \x{100}\x{100}\x{100}\x{100}
+\= Expect no match     
     \x{100}\x{100}\x{100}
 
 /^a+[a\x{200}]/utf
@@ -728,74 +727,74 @@
 /^\pC\pL\pM\pN\pP\pS\pZ</utf
     \x7f\x{c0}\x{30f}\x{660}\x{66c}\x{f01}\x{1680}<
     \np\x{300}9!\$ < 
-    ** Failers 
+\= Expect no match     
     ap\x{300}9!\$ < 
   
 /^\PC/utf
     X
-    ** Failers 
+\= Expect no match     
     \x7f
   
 /^\PL/utf
     9
-    ** Failers 
+\= Expect no match     
     \x{c0}
   
 /^\PM/utf
     X
-    ** Failers 
+\= Expect no match     
     \x{30f}
   
 /^\PN/utf
     X
-    ** Failers 
+\= Expect no match     
     \x{660}
   
 /^\PP/utf
     X
-    ** Failers 
+\= Expect no match 
     \x{66c}
   
 /^\PS/utf
     X
-    ** Failers 
+\= Expect no match 
     \x{f01}
   
 /^\PZ/utf
     X
-    ** Failers 
+\= Expect no match 
     \x{1680}
     
 /^\p{Cc}/utf
     \x{017}
     \x{09f} 
-    ** Failers
+\= Expect no match
     \x{0600} 
   
 /^\p{Cf}/utf
     \x{601}
-    ** Failers
+\= Expect no match
     \x{09f} 
   
 /^\p{Cn}/utf
     \x{e0000}
-    ** Failers
+\= Expect no match
     \x{09f} 
   
 /^\p{Co}/utf
     \x{f8ff}
-    ** Failers
+\= Expect no match
     \x{09f} 
   
 /^\p{Ll}/utf
     a
-    ** Failers 
+\= Expect no match 
     Z
     \x{e000}  
   
 /^\p{Lm}/utf
     \x{2b0}
-    ** Failers
+\= Expect no match
     a 
   
 /^\p{Lo}/utf
@@ -805,38 +804,38 @@
     \x{4d00}
     \x{4db4}
     \x{4db5}     
-    ** Failers
+\= Expect no match
     a 
     \x{2b0}
     \x{4db6} 
   
 /^\p{Lt}/utf
     \x{1c5}
-    ** Failers
+\= Expect no match
     a 
     \x{2b0}
   
 /^\p{Lu}/utf
     A
-    ** Failers
+\= Expect no match
     \x{2b0}
   
 /^\p{Mc}/utf
     \x{903}
-    ** Failers
+\= Expect no match
     X
     \x{300}
        
 /^\p{Me}/utf
     \x{488}
-    ** Failers
+\= Expect no match
     X
     \x{903}
     \x{300}
   
 /^\p{Mn}/utf
     \x{300}
-    ** Failers
+\= Expect no match
     X
     \x{903}
   
@@ -844,26 +843,26 @@
     0123456789\x{660}\x{661}\x{662}\x{663}\x{664}\x{665}\x{666}\x{667}\x{668}\x{669}\x{66a}
     \x{6f0}\x{6f1}\x{6f2}\x{6f3}\x{6f4}\x{6f5}\x{6f6}\x{6f7}\x{6f8}\x{6f9}\x{6fa}
     \x{966}\x{967}\x{968}\x{969}\x{96a}\x{96b}\x{96c}\x{96d}\x{96e}\x{96f}\x{970}
-    ** Failers
+\= Expect no match
     X
   
 /^\p{Nl}/utf
     \x{16ee}
-    ** Failers
+\= Expect no match
     X
     \x{966}
   
 /^\p{No}/utf
     \x{b2}
     \x{b3}
-    ** Failers
+\= Expect no match
     X
     \x{16ee}
   
 /^\p{Pc}/utf
     \x5f
     \x{203f}
-    ** Failers
+\= Expect no match
     X
     -
     \x{58a}
@@ -871,7 +870,7 @@
 /^\p{Pd}/utf
     -
     \x{58a}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
   
@@ -880,7 +879,7 @@
     ]
     }
     \x{f3b}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
     (
@@ -891,21 +890,21 @@
 /^\p{Pf}/utf
     \x{bb}
     \x{2019}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
   
 /^\p{Pi}/utf
     \x{ab}
     \x{2018}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
   
 /^\p{Po}/utf
     !
     \x{37e}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
   
@@ -914,7 +913,7 @@
     [
     {
     \x{f3c}
-    ** Failers
+\= Expect no match
     X
     )
     ]
@@ -923,83 +922,83 @@
   
 /^\p{Sk}/utf
     \x{2c2}
-    ** Failers
+\= Expect no match
     X
     \x{9f2}
   
 /^\p{Sm}+/utf
     +<|~\x{ac}\x{2044}
-    ** Failers
+\= Expect no match
     X
     \x{9f2}
   
 /^\p{So}/utf
     \x{a6}
     \x{482} 
-    ** Failers
+\= Expect no match
     X
     \x{9f2}
   
 /^\p{Zl}/utf
     \x{2028}
-    ** Failers
+\= Expect no match
     X
     \x{2029}
   
 /^\p{Zp}/utf
     \x{2029}
-    ** Failers
+\= Expect no match
     X
     \x{2028}
   
 /\p{Nd}+(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}+?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}{2,}(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}{2,}?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}*(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}*?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}{2}(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}{2,3}(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}{2,3}?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}??(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}*+(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}*+(...)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}*+(....)/utf
-      ** Failers
-      \x{660}\x{661}\x{662}ABC
+\= Expect no match
+    \x{660}\x{661}\x{662}ABC
   
 /(?<=A\p{Nd})XYZ/utf
     A2XYZ
     123A5XYZPQR
     ABA\x{660}XYZpqr
-    ** Failers
+\= Expect no match
     AXYZ
     XYZ     
     
@@ -1007,33 +1006,38 @@
     1XYZ
     AB=XYZ.. 
     XYZ 
-    ** Failers
+\= Expect no match
     WXYZ 
 
 /[\P{Nd}]+/utf
     abcd
-    ** Failers
+\= Expect no match
     1234
 
 /\D+/utf
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
      
 /\P{Nd}+/utf
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
 
 /[\D]+/utf
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
 
 /[\P{Nd}]+/utf
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
 
 /[\D\P{Nd}]+/utf
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
 
 /\pL/utf
     a
@@ -1046,18 +1050,18 @@
 /\p{Lu}/utf
     A
     aZ
-    ** Failers
+\= Expect no match
     abc   
 
 /\p{Ll}/utf
     a
     Az
-    ** Failers
+\= Expect no match
     ABC   
 
 /A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
-    ** Failers
+\= Expect no match
     a\x{391}\x{10427}\x{ff3a}\x{1fb0}   
     A\x{3b1}\x{10427}\x{ff3a}\x{1fb0}
     A\x{391}\x{1044F}\x{ff3a}\x{1fb0}
@@ -1104,7 +1108,7 @@
     A\x{300}\x{301}\x{302}BCA\x{300}\x{301}C 
 
 /^\X(.)/utf
-    *** Failers
+\= Expect no match
     A\x{300}\x{301}\x{302}
 
 /^\X{2,3}(.)/utf
@@ -1127,46 +1131,46 @@
 
 /^\p{Han}+/utf
     \x{2e81}\x{3007}\x{2f804}\x{31a0}
-    ** Failers
+\= Expect no match
     \x{2e7f}  
 
 /^\P{Katakana}+/utf
     \x{3105}
-    ** Failers
+\= Expect no match
     \x{30ff}  
 
 /^[\p{Arabic}]/utf
     \x{06e9}
     \x{060b}
-    ** Failers
+\= Expect no match
     X\x{06e9}   
 
 /^[\P{Yi}]/utf
     \x{2f800}
-    ** Failers
+\= Expect no match
     \x{a014}
     \x{a4c6}   
     
 /^\p{Any}X/utf
     AXYZ
     \x{1234}XYZ 
-    ** Failers
+\= Expect no match
     X  
     
 /^\P{Any}X/utf
-    ** Failers
+\= Expect no match
     AX
     
 /^\p{Any}?X/utf
     XYZ
     AXYZ
     \x{1234}XYZ 
-    ** Failers
+\= Expect no match
     ABXYZ   
 
 /^\P{Any}?X/utf
     XYZ
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ 
     ABXYZ   
@@ -1175,11 +1179,11 @@
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
-    ** Failers
+\= Expect no match
     XYZ
 
 /^\P{Any}+X/utf
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
@@ -1190,11 +1194,10 @@
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
-    ** Failers
 
 /^\P{Any}*X/utf
     XYZ
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
@@ -1202,23 +1205,23 @@
 /^[\p{Any}]X/utf
     AXYZ
     \x{1234}XYZ 
-    ** Failers
+\= Expect no match
     X  
     
 /^[\P{Any}]X/utf
-    ** Failers
+\= Expect no match
     AX
     
 /^[\p{Any}]?X/utf
     XYZ
     AXYZ
     \x{1234}XYZ 
-    ** Failers
+\= Expect no match
     ABXYZ   
 
 /^[\P{Any}]?X/utf
     XYZ
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ 
     ABXYZ   
@@ -1227,11 +1230,11 @@
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
-    ** Failers
+\= Expect no match
     XYZ
 
 /^[\P{Any}]+X/utf
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
@@ -1242,11 +1245,10 @@
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
-    ** Failers
 
 /^[\P{Any}]*X/utf
     XYZ
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
@@ -1260,7 +1262,7 @@
     \x{1234}\n\r\x{3456}xyz 
 
 /^\P{Any}{3,5}?/utf
-    ** Failers
+\= Expect no match
     abcdefgh
     \x{1234}\n\r\x{3456}xyz 
 
@@ -1268,79 +1270,79 @@
      AXY
      aXY
      \x{1c5}XY
-     ** Failers
-     \x{1bb}XY
-     \x{2b0}XY
-     !XY      
+\= Expect no match
+    \x{1bb}XY
+    \x{2b0}XY
+    !XY      
 
 /^[\p{L&}]X/utf
-     AXY
-     aXY
+    AXY
+    aXY
      \x{1c5}XY
-     ** Failers
-     \x{1bb}XY
-     \x{2b0}XY
-     !XY      
+\= Expect no match
+    \x{1bb}XY
+    \x{2b0}XY
+    !XY      
 
 /^\p{L&}+X/utf
-     AXY
-     aXY
-     AbcdeXyz 
-     \x{1c5}AbXY
-     abcDEXypqreXlmn 
-     ** Failers
-     \x{1bb}XY
-     \x{2b0}XY
-     !XY      
+    AXY
+    aXY
+    AbcdeXyz 
+    \x{1c5}AbXY
+    abcDEXypqreXlmn 
+\= Expect no match
+    \x{1bb}XY
+    \x{2b0}XY
+    !XY      
 
 /^[\p{L&}]+X/utf
-     AXY
-     aXY
-     AbcdeXyz 
-     \x{1c5}AbXY
-     abcDEXypqreXlmn 
-     ** Failers
-     \x{1bb}XY
-     \x{2b0}XY
-     !XY      
+    AXY
+    aXY
+    AbcdeXyz 
+    \x{1c5}AbXY
+    abcDEXypqreXlmn 
+\= Expect no match
+    \x{1bb}XY
+    \x{2b0}XY
+    !XY      
 
 /^\p{L&}+?X/utf
-     AXY
-     aXY
-     AbcdeXyz 
-     \x{1c5}AbXY
-     abcDEXypqreXlmn 
-     ** Failers
-     \x{1bb}XY
-     \x{2b0}XY
-     !XY      
+    AXY
+    aXY
+    AbcdeXyz 
+    \x{1c5}AbXY
+    abcDEXypqreXlmn 
+\= Expect no match
+    \x{1bb}XY
+    \x{2b0}XY
+    !XY      
 
 /^[\p{L&}]+?X/utf
-     AXY
-     aXY
-     AbcdeXyz 
-     \x{1c5}AbXY
-     abcDEXypqreXlmn 
-     ** Failers
-     \x{1bb}XY
-     \x{2b0}XY
-     !XY      
+    AXY
+    aXY
+    AbcdeXyz 
+    \x{1c5}AbXY
+    abcDEXypqreXlmn 
+\= Expect no match
+    \x{1bb}XY
+    \x{2b0}XY
+    !XY      
 
 /^\P{L&}X/utf
-     !XY
-     \x{1bb}XY
-     \x{2b0}XY
-     ** Failers
-     \x{1c5}XY
-     AXY      
+    !XY
+    \x{1bb}XY
+    \x{2b0}XY
+\= Expect no match
+    \x{1c5}XY
+    AXY      
 
 /^[\P{L&}]X/utf
-     !XY
-     \x{1bb}XY
-     \x{2b0}XY
-     ** Failers
-     \x{1c5}XY
-     AXY      
+    !XY
+    \x{1bb}XY
+    \x{2b0}XY
+\= Expect no match
+    \x{1c5}XY
+    AXY      
 
 /^(\p{Z}[^\p{C}\p{Z}]+)*$/
     \xa0!
@@ -1361,13 +1363,16 @@
     123abc\xc4\xc5zz
 
 /\X{1,3}\d/
-  \x8aBCD
+\= Expect no match
+    \x8aBCD
   
 /\X?\d/
-  \x8aBCD 
+\= Expect no match
+    \x8aBCD 
 
 /\P{L}?\d/
-  \x8aBCD 
+\= Expect no match
+    \x8aBCD 
 
 /[\PPP\x8a]{1,}\x80/
     A\x80
@@ -1389,7 +1394,7 @@
     \x{6e9} 
     \x{6ef}
     \x{6fa}  
-    ** Failers
+\= Expect no match
     \x{650}
     \x{651}  
     \x{652}  
@@ -1412,7 +1417,7 @@
     \x{654}
     \x{655}
     \x{200c} 
-    ** Failers
+\= Expect no match
     \x{64a}
     \x{656}     
 
@@ -1429,7 +1434,7 @@
     \x{1049d}
     \x{104a0}
     \x{104a9}
-    ** Failers
+\= Expect no match
     \x{1049e}
     \x{1049f}
     \x{104aa}           
@@ -1443,7 +1448,7 @@
 
 /\x{a77d}\x{1d79}/utf
     \x{a77d}\x{1d79}
-    ** Failers 
+\= Expect no match 
     \x{1d79}\x{a77d} 
 
 /(A)\1/i,utf
@@ -1512,11 +1517,11 @@
     .+\x{a1}\x{a0}
 
 /\p{Zs}*?\R/
-    ** Failers
+\= Expect no match
     a\xFCb   
 
 /\p{Zs}*\R/
-    ** Failers 
+\= Expect no match 
     a\xFCb   
 
 /ⱥ/i,utf
@@ -1596,10 +1601,11 @@
     \x{1111}\x{ae4c}\x{1111}\x{ae4c}\x{1111}\x{ae4c}\x{1111}\x{ae4c}X
 
 /\X*Z/utf,no_start_optimize
-  A\x{300}
+\= Expect no match
+    A\x{300}
 
 /\X*(.)/utf,no_start_optimize
-  A\x{1111}\x{ae4c}\x{1169}
+    A\x{1111}\x{ae4c}\x{1169}
 
 # --------------------------------------------
 
@@ -2036,10 +2042,12 @@
 
 /^\p{Any}*\d{4}/utf
     1234
+\= Expect no match
     123 
 
 /^\X*\w{4}/utf
     1234
+\= Expect no match
     123  
 
 /^A\s+Z/utf,ucp
@@ -2067,7 +2075,7 @@
     \x{1d173}\x{1d174}\x{1d175}\x{1d176}\x{1d177}\x{1d178}\x{1d179}\x{1d17a}
     \x{e0001}
     \x{e0020}\x{e0030}\x{e0040}\x{e0050}\x{e0060}\x{e0070}\x{e007f}
-    ** Failers
+\= Expect no match
     \x{09}
     \x{0a}
     \x{1D}
@@ -2107,7 +2115,7 @@
     \x{1d173}\x{1d174}\x{1d175}\x{1d176}\x{1d177}\x{1d178}\x{1d179}\x{1d17a}
     \x{e0001}
     \x{e0020}\x{e0030}\x{e0040}\x{e0050}\x{e0060}\x{e0070}\x{e007f}
-    ** Failers
+\= Expect no match
     \x{09}
     \x{1D}
     \x{85}
@@ -2123,14 +2131,14 @@
     !\"#%&'()*,-./:;?@[\\]_{}
     \x{a1}\x{a7}  
     \x{37e} 
-    ** Failers
+\= Expect no match
     abcde  
 
 /^[[:^graph:]]+$/utf,ucp
     \x{09}\x{0a}\x{1D}\x{20}\x{85}\x{a0}\x{1680}
     \x{2028}\x{2029}\x{202f}\x{2065}
     \x{3000}\x{e0002}\x{e001f}\x{e0080}
-    ** Failers
+\= Expect no match
     Letter:ABC
     Mark:\x{300}\x{1d172}\x{1d17b}
     Number:9\x{660}
@@ -2151,7 +2159,7 @@
 /^[[:^print:]]+$/utf,ucp
     \x{09}\x{1D}\x{85}\x{2028}\x{2029}\x{2065}
     \x{e0002}\x{e001f}\x{e0080}
-    ** Failers
+\= Expect no match
     Space: \x{a0}
     \x{1680}\x{2000}\x{2001}\x{2002}\x{2003}\x{2004}\x{2005}
     \x{2006}\x{2007}\x{2008}\x{2009}\x{200a} 
@@ -2177,7 +2185,7 @@
 
 /^[[:^punct:]]+$/utf,ucp
     abcde  
-    ** Failers
+\= Expect no match
     \$+<=>^`|~
     !\"#%&'()*,-./:;?@[\\]_{}
     \x{a1}\x{a7}  
@@ -2213,6 +2221,7 @@
     \x{23a}\x{23a}\x{2c65}\x{23a}
 
 /^(\x{23a})\1*(....)/i,utf
+\= Expect no match
     \x{23a}\x{2c65}\x{2c65}\x{2c65}
     \x{23a}\x{23a}\x{2c65}\x{23a}
 
@@ -2221,12 +2230,56 @@
 
 "[\S\V\H]"utf
 
-/\C\X*TӅ;

-{0,6}\v+
F
-/utf
-    Ӆ\x0a
+/[^\p{Any}]*+x/utf
+    x
 
-/\C(\W?ſ)'?{{/utf
-    \\C(\\W?ſ)'?{{
+/[[:punct:]]/utf,ucp
+    \x{b4} 
+
+/[[:^ascii:]]/utf,ucp
+    \x{100}
+    \x{200}
+    \x{300}
+    \x{37e}
+\= Expect no match     
+    aa
+    99
+    
+/[[:^ascii:]\w]/utf,ucp
+    aa
+    99
+    gg
+    \x{100}
+    \x{200}
+    \x{300}
+    \x{37e}
+
+/[\w[:^ascii:]]/utf,ucp
+    aa
+    99
+    gg
+    \x{100}
+    \x{200}
+    \x{300}
+    \x{37e}
+
+/[^[:ascii:]\W]/utf,ucp
+    \x{100}
+    \x{200}
+\= Expect no match     
+    aa
+    99
+    gg
+    \x{37e}
+
+/[^[:^ascii:]\d]/utf,ucp
+    a
+    ~
+    \a
+    \x{7f}
+\= Expect no match
+    0
+    \x{389}
+    \x{20ac}
 
 # End of testinput4
diff --git a/testdata/testinput5 b/testdata/testinput5
index 7e2ba45..2e13a7c 100644
--- a/testdata/testinput5
+++ b/testdata/testinput5
@@ -11,11 +11,11 @@
 # test 4.
 
 /^[\p{Arabic}]/utf
-    ** Failers
+\= Expect no match
     \x{061c}
     
 /^[[:graph:]]+$/utf,ucp
-    ** Failers
+\= Expect no match
     \x{61c}
     \x{2066}
     \x{2067}
@@ -23,7 +23,7 @@
     \x{2069}
 
 /^[[:print:]]+$/utf,ucp
-    ** Failers
+\= Expect no match
     \x{61c}
     \x{2066}
     \x{2067}
@@ -54,6 +54,7 @@
     A\x{85}\x{2005}Z
     
 /^[[:graph:]]+$/utf,ucp
+\= Expect no match
     \x{180e}
 
 /^[[:print:]]+$/utf,ucp
@@ -63,6 +64,7 @@
     \x{09}\x{0a}\x{1D}\x{20}\x{85}\x{a0}\x{61c}\x{1680}\x{180e}
 
 /^[[:^print:]]+$/utf,ucp
+\= Expect no match
     \x{180e}
 
 # End of U+180E tests.
@@ -109,12 +111,9 @@
 /.{3,5}?/IB,utf
     \x{212ab}\x{212ab}\x{212ab}\x{861}
 
-/(?<=\C)X/utf
-    Should produce an error diagnostic
-    
 /^[ab]/IB,utf
     bar
-    *** Failers
+\= Expect no match
     c
     \x{ff}
     \x{100}  
@@ -123,7 +122,7 @@
     c
     \x{ff}
     \x{100}  
-    *** Failers 
+\= Expect no match 
     aaa
   
 /\x{100}*(\d+|"(?1)")/utf
@@ -133,7 +132,7 @@
     "\x{100}1234"  
     \x{100}\x{100}12ab 
     \x{100}\x{100}"12" 
-    *** Failers 
+\= Expect no match 
     \x{100}\x{100}abcd
 
 /\x{100}*/IB,utf
@@ -147,7 +146,7 @@
 /[Ā-Ą]/utf
     \x{100}
     \x{104}
-    *** Failers
+\= Expect no match
     \x{105}
     \x{ff}    
 
@@ -217,7 +216,7 @@
     a\x{85}b   
     a\x{2028}b 
     a\x{2029}b 
-    ** Failers
+\= Expect no match
     a\n\rb    
 
 /^a\R*b/bsr=unicode,utf
@@ -240,7 +239,7 @@
     a\x{85}b   
     a\n\rb    
     a\n\r\x{85}\x0cb 
-    ** Failers
+\= Expect no match
     ab  
 
 /^a\R{1,3}b/bsr=unicode,utf
@@ -251,34 +250,34 @@
     a\r\n\r\n\r\nb 
     a\n\r\n\rb
     a\n\n\r\nb 
-    ** Failers
+\= Expect no match
     a\n\n\n\rb
     a\r
 
 /\H\h\V\v/utf
     X X\x0a
     X\x09X\x0b
-    ** Failers
+\= Expect no match
     \x{a0} X\x0a   
     
 /\H*\h+\V?\v{3,4}/utf
     \x09\x20\x{a0}X\x0a\x0b\x0c\x0d\x0a
     \x09\x20\x{a0}\x0a\x0b\x0c\x0d\x0a
     \x09\x20\x{a0}\x0a\x0b\x0c
-    ** Failers 
+\= Expect no match 
     \x09\x20\x{a0}\x0a\x0b
      
 /\H\h\V\v/utf
     \x{3001}\x{3000}\x{2030}\x{2028}
     X\x{180e}X\x{85}
-    ** Failers
+\= Expect no match
     \x{2009} X\x0a   
     
 /\H*\h+\V?\v{3,4}/utf
     \x{1680}\x{180e}\x{2007}X\x{2028}\x{2029}\x0c\x0d\x0a
     \x09\x{205f}\x{a0}\x0a\x{2029}\x0c\x{2028}\x0a
     \x09\x20\x{202f}\x0a\x0b\x0c
-    ** Failers 
+\= Expect no match 
     \x09\x{200a}\x{a0}\x{2028}\x0b
      
 /[\h]/B,utf
@@ -300,7 +299,7 @@
     a\rb
     a\nb
     a\r\nb
-    ** Failers
+\= Expect no match
     a\x{85}b
     a\x0bb     
 
@@ -315,7 +314,7 @@
     a\rb
     a\nb
     a\r\nb
-    ** Failers
+\= Expect no match
     a\x{85}b
     a\x0bb     
 
@@ -325,11 +324,10 @@
     a\r\nb
     a\x{85}b
     a\x0bb     
-    ** Failers 
  
 /.*a.*=.b.*/utf,newline=any
     QQQ\x{2029}ABCaXYZ=!bPQR
-    ** Failers
+\= Expect no match
     a\x{2029}b
     \x61\xe2\x80\xa9\x62 
 
@@ -338,13 +336,13 @@
 /a[^]b/utf,alt_bsux,allow_empty_class,match_unset_backref
     a\x{1234}b
     a\nb 
-    ** Failers
+\= Expect no match
     ab  
     
 /a[^]+b/utf,alt_bsux,allow_empty_class,match_unset_backref
     aXb
     a\nX\nX\x{1234}b 
-    ** Failers
+\= Expect no match
     ab  
 
 /(\x{de})\1/
@@ -396,6 +394,7 @@
     X\x{123}\x{123}\x{123}\x{123}\=ps
     
 /X\x{123}{2,4}b/utf
+\= Expect no match
     Xx\=ps
     X\x{123}x\=ps
     X\x{123}\x{123}x\=ps
@@ -403,6 +402,7 @@
     X\x{123}\x{123}\x{123}\x{123}x\=ps
     
 /X\x{123}{2,4}?b/utf
+\= Expect no match
     Xx\=ps
     X\x{123}x\=ps
     X\x{123}\x{123}x\=ps
@@ -410,6 +410,7 @@
     X\x{123}\x{123}\x{123}\x{123}x\=ps
     
 /X\x{123}{2,4}+b/utf
+\= Expect no match
     Xx\=ps
     X\x{123}x\=ps
     X\x{123}\x{123}x\=ps
@@ -804,6 +805,7 @@
 /(?<=\x{1234}\x{1234})\bxy/I,utf
 
 /(?<!^)ETA/utf
+\= Expect no match
     ETA
 
 /\u0100/B,utf,alt_bsux,allow_empty_class,match_unset_backref
@@ -834,7 +836,7 @@
     1234
     12-34
     12+\x{661}-34  
-    ** Failers
+\= Expect no match
     abcd  
 
 /(?:[\PPa*]*){8,}/
@@ -901,7 +903,7 @@
 
 /^\p{Cs}/utf
     \x{dfff}\=no_utf_check
-    ** Failers
+\= Expect no match
     \x{09f} 
   
 /^\p{Mn}/utf
@@ -918,7 +920,7 @@
 /^\p{Sc}+/utf
     $\x{a2}\x{a3}\x{a4}\x{a5}\x{a6}
     \x{9f2}
-    ** Failers
+\= Expect no match
     X
     \x{2c2}
   
@@ -928,7 +930,7 @@
     \x{1680}
     \x{2000}
     \x{2001}     
-    ** Failers
+\= Expect no match
     \x{2028}
     \x{200d} 
   
@@ -937,31 +939,31 @@
       
 /\p{^Lu}/i,utf
     1234
-    ** Failers
+\= Expect no match
     ABC 
 
 /\P{Lu}/i,utf
     1234
-    ** Failers
+\= Expect no match
     ABC 
 
 /\p{Ll}/i,utf
     a
     Az
-    ** Failers
+\= Expect no match
     ABC   
 
 /\p{Lu}/i,utf
     A
     a\x{10a0}B 
-    ** Failers 
+\= Expect no match 
     a
     \x{1d00}  
 
 /\p{Lu}/i,utf
     A
     aZ
-    ** Failers
+\= Expect no match
     abc   
 
 /[\x{c0}\x{391}]/i,utf
@@ -1018,12 +1020,12 @@
     \x{6ca}
     \x{a6c}
     \x{10a7}   
-    ** Failers
+\= Expect no match
     _ABC   
 
 /^\p{Xan}+/utf
     ABCD1234\x{6ca}\x{a6c}\x{10a7}_
-    ** Failers
+\= Expect no match
     _ABC   
 
 /^\p{Xan}+?/utf
@@ -1044,18 +1046,18 @@
     \x{6ca}
     \x{a6c}
     \x{10a7}   
-    ** Failers
+\= Expect no match
     _ABC   
  
 /^[\p{Xan}]+/utf
     ABCD1234\x{6ca}\x{a6c}\x{10a7}_
-    ** Failers
+\= Expect no match
     _ABC   
 
 /^>\p{Xsp}/utf
     >\x{1680}\x{2028}\x{0b}
     >\x{a0} 
-    ** Failers
+\= Expect no match
     \x{0b} 
 
 /^>\p{Xsp}+/utf
@@ -1082,7 +1084,7 @@
 /^>\p{Xps}/utf
     >\x{1680}\x{2028}\x{0b}
     >\x{a0} 
-    ** Failers
+\= Expect no match
     \x{0b} 
 
 /^>\p{Xps}+/utf
@@ -1113,7 +1115,7 @@
     \x{a6c}
     \x{10a7}
     _ABC    
-    ** Failers
+\= Expect no match
     [] 
 
 /^\p{Xwd}+/utf
@@ -1138,7 +1140,7 @@
     \x{a6c}
     \x{10a7}   
     _ABC 
-    ** Failers
+\= Expect no match
     []   
  
 /^[\p{Xwd}]+/utf
@@ -1232,7 +1234,7 @@
 
 /\b...\B/utf
     abc_
-    ** Failers 
+\= Expect no match 
     \x{37e}abc\x{376} 
     \x{37e}\x{376}\x{371}\x{393}\x{394} 
     !\x{c0}++\x{c1}\x{c2} 
@@ -1288,9 +1290,11 @@
 # These behaved oddly in Perl, so they are kept in this test 
 
 /(\x{23a}\x{23a}\x{23a})?\1/i,utf
+\= Expect no match
     \x{23a}\x{23a}\x{23a}\x{2c65}\x{2c65}
 
 /(ȺȺȺ)?\1/i,utf
+\= Expect no match
     ȺȺȺⱥⱥ
 
 /(\x{23a}\x{23a}\x{23a})?\1/i,utf
@@ -1300,9 +1304,11 @@
     ȺȺȺⱥⱥⱥ
 
 /(\x{23a}\x{23a}\x{23a})\1/i,utf
+\= Expect no match
     \x{23a}\x{23a}\x{23a}\x{2c65}\x{2c65}
 
 /(ȺȺȺ)\1/i,utf
+\= Expect no match
     ȺȺȺⱥⱥ
 
 /(\x{23a}\x{23a}\x{23a})\1/i,utf
@@ -1328,19 +1334,19 @@
 /^[\p{Batak}]/utf
     \x{1bc0}
     \x{1bff}
-    ** Failers
+\= Expect no match
     \x{1bf4}
     
 /^[\p{Brahmi}]/utf
     \x{11000}
     \x{1106f}
-    ** Failers
+\= Expect no match
     \x{1104e}
     
 /^[\p{Mandaic}]/utf
     \x{840}
     \x{85e}
-    ** Failers
+\= Expect no match
     \x{85c}
     \x{85d}    
 
@@ -1355,11 +1361,9 @@
 
 /^a\X41z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aX41z
-    *** Failers
+\= Expect no match
     aAz
 
-/(?<=ab\Cde)X/utf
-
 /\X/
     a\=ps
     a\=ph
@@ -1453,7 +1457,7 @@
     \x{3a3}\x{3c3}\x{3c2}\x{3a3}\x{3c3}\x{3c2}
 
 /\x{3a3}++./i,utf,aftertext
-    ** Failers
+\= Expect no match
     \x{3a3}\x{3c3}\x{3c2}\x{3a3}\x{3c3}\x{3c2}
 
 /\x{3a3}*\x{3c2}/Bi,utf
@@ -1463,19 +1467,24 @@
 /[^a]*\x{3c2}/Bi,utf
 
 /ist/Bi,utf
+\= Expect no match
     ikt
 
 /is+t/i,utf
     iSs\x{17f}t
+\= Expect no match
     ikt
 
 /is+?t/i,utf
+\= Expect no match
     ikt
 
 /is?t/i,utf
+\= Expect no match
     ikt
 
 /is{2}t/i,utf
+\= Expect no match
     iskt
     
 # This property is a PCRE special 
@@ -1485,52 +1494,52 @@
     @abc
     `abc
     \x{1234}abc
-    ** Failers
+\= Expect no match
     abc     
 
 /^\p{Xuc}+/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}+?/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}+?\*/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}++/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}{3,5}/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}{3,5}?/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^[\p{Xuc}]/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^[\p{Xuc}]+/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\P{Xuc}/utf
     abc
-    ** Failers
+\= Expect no match
     $abc
     @abc
     `abc
@@ -1538,7 +1547,7 @@
 
 /^[\P{Xuc}]/utf
     abc
-    ** Failers
+\= Expect no match
     $abc
     @abc
     `abc
@@ -1603,13 +1612,13 @@
 
 /[\p{L}ab]{2,3}+/B,no_auto_possess
 
-/\D+\X \d+\X \S+\X \s+\X \W+\X \w+\X \C+\X \R+\X \H+\X \h+\X \V+\X \v+\X a+\X \n+\X .+\X/Bx
+/\D+\X \d+\X \S+\X \s+\X \W+\X \w+\X \R+\X \H+\X \h+\X \V+\X \v+\X a+\X \n+\X .+\X/Bx
 
 /.+\X/Bsx
 
 /\X+$/Bmx
 
-/\X+\D \X+\d \X+\S \X+\s \X+\W \X+\w \X+. \X+\C \X+\R \X+\H \X+\h \X+\V \X+\v \X+\X \X+\Z \X+\z \X+$/Bx
+/\X+\D \X+\d \X+\S \X+\s \X+\W \X+\w \X+. \X+\R \X+\H \X+\h \X+\V \X+\v \X+\X \X+\Z \X+\z \X+$/Bx
 
 /\d+\s{0,5}=\s*\S?=\w{0,4}\W*/B,utf,ucp
 
@@ -1634,9 +1643,7 @@
     123ábc123
 
 /(?<=abc)(|def)/g,utf,replace=<$0>
-      123abcáyzabcdef789abcሴqr
-
-/[^\xff]((?1))/utf,debug
+    123abcáyzabcdef789abcሴqr
 
 /[A-`]/iB,utf
     abcdefghijklmno
@@ -1651,4 +1658,62 @@
 
 /$(&.+[\p{Me}].\s\xdcC*?(?(<y>))(?<!^)$C((;*?(R))+(?(R)){0,6}?|){12\x8a\X*?\x8a\x0b\xd1^9\3*+(\xc1,\k'P'\xb4)\xcc(z\z(?JJ)(?'X'8};(\x0b\xd1^9\?'3*+(\xc1.]k+\x0b'Pm'\xb4\xcc4'\xd1'(?'X'))?-%--\x95$9*\4'|\xd1(''%\x95*$9)#(?'R')3\x07?('P\xed')\\x16:;()\x1e\x10*:(?<y>)\xd1+!~:(?)''(d'E:yD!\s(?'R'\x1e;\x10:U))|')g!\xb0*){29+))#(?'P'})*?/
 
+"(*UTF)(*UCP)(.UTF).+X(\V+;\^(\D|)!999}(?(?C{7(?C')\H*\S*/^\x5\xa\\xd3\x85n?(;\D*(?m).[^mH+((*UCP)(*U:F)})(?!^)(?'"
+
+/[\pS#moq]/
+    =
+
+/(*:a\x{12345}b\t(d\)c)xxx/utf,alt_verbnames,mark
+    cxxxz
+
+/abcd/utf,replace=x\x{824}y\o{3333}z(\Q12\$34$$\x34\E5$$),substitute_extended
+    abcd
+
+/a(\x{e0}\x{101})(\x{c0}\x{102})/utf,replace=a\u$1\U$1\E$1\l$2\L$2\Eab\U\x{e0}\x{101}\L\x{d0}\x{160}\EDone,substitute_extended
+    a\x{e0}\x{101}\x{c0}\x{102}
+
+/((?<digit>\d)|(?<letter>\p{L}))/g,substitute_extended,replace=<${digit:+digit; :not digit; }${letter:+letter:not a letter}>
+    ab12cde
+
+/[\W\p{Any}]/B
+    abc
+    123 
+
+/[\W\pL]/B
+    abc
+\= Expect no match
+    123     
+
+/(*UCP)(*UTF)[[:>:]]X/B
+
+/abc/utf,replace=xyz
+    abc\=zero_terminate
+
+/a[[:punct:]b]/ucp,bincode
+
+/a[[:punct:]b]/utf,ucp,bincode
+
+/a[b[:punct:]]/utf,ucp,bincode
+
+/[[:^ascii:]]/utf,ucp,bincode
+
+/[[:^ascii:]\w]/utf,ucp,bincode
+
+/[\w[:^ascii:]]/utf,ucp,bincode
+
+/[^[:ascii:]\W]/utf,ucp,bincode
+    \x{de}
+    \x{200}
+\= Expect no match     
+    \x{300}
+    \x{37e}
+
+/[[:^ascii:]a]/utf,ucp,bincode
+
+/L(?#(|++<!(2)?/B,utf,no_auto_possess,auto_callout
+
+/L(?#(|++<!(2)?/B,utf,ucp,auto_callout
+
+/(*UTF)C\x09((?<!'(?x)!*H? #\xcc\x9a[^$]/
+
 # End of testinput5 
diff --git a/testdata/testinput6 b/testdata/testinput6
index 2651c91..c24b40f 100644
--- a/testdata/testinput6
+++ b/testdata/testinput6
@@ -4,6 +4,7 @@
     
 #forbid_utf
 #subject dfa
+#newline_default lf anycrlf any
      
 /abc/
     abc
@@ -16,7 +17,7 @@
 /ab+c/
     abc
     abbbbbbc
-    *** Failers 
+\= Expect no match 
     ac
     ab
     
@@ -33,59 +34,59 @@
     
 /^abc/
     abcdef
-    *** Failers
+\= Expect no match
     xyzabc
     xyz\nabc    
     
 /^abc/m
     abcdef
     xyz\nabc    
-    *** Failers
+\= Expect no match
     xyzabc
     
 /\Aabc/
     abcdef
-    *** Failers
+\= Expect no match
     xyzabc
     xyz\nabc    
     
 /\Aabc/m
     abcdef
-    *** Failers
+\= Expect no match
     xyzabc
     xyz\nabc    
     
 /\Gabc/
     abcdef
     xyzabc\=offset=3
-    *** Failers
+\= Expect no match
     xyzabc    
     xyzabc\=offset=2
     
 /x\dy\Dz/
     x9yzz
     x0y+z
-    *** Failers
+\= Expect no match
     xyz
     xxy0z     
     
 /x\sy\Sz/
     x yzz
     x y+z
-    *** Failers
+\= Expect no match
     xyz
     xxyyz
     
 /x\wy\Wz/
     xxy+z
-    *** Failers
+\= Expect no match
     xxy0z
     x+y+z         
     
 /x.y/
     x+y
     x-y
-    *** Failers
+\= Expect no match
     x\ny
     
 /x.y/s
@@ -97,46 +98,45 @@
     a+bc+dp+q
     a+bc\ndp+q
     x\nyp+q 
-    *** Failers 
+\= Expect no match 
     a\nbc\ndp+q
     a+bc\ndp\nq
     x\nyp\nq 
 
 /a\d\z/
     ba0
-    *** Failers
+\= Expect no match
     ba0\n
     ba0\ncd   
 
 /a\d\z/m
     ba0
-    *** Failers
+\= Expect no match
     ba0\n
     ba0\ncd   
 
 /a\d\Z/
     ba0
     ba0\n
-    *** Failers
+\= Expect no match
     ba0\ncd   
 
 /a\d\Z/m
     ba0
     ba0\n
-    *** Failers
+\= Expect no match
     ba0\ncd   
 
 /a\d$/
     ba0
     ba0\n
-    *** Failers
+\= Expect no match
     ba0\ncd   
 
 /a\d$/m
     ba0
     ba0\n
     ba0\ncd   
-    *** Failers
 
 /abc/i
     abc
@@ -157,14 +157,14 @@
     axxyz
     axxxyzq
     axxxxyzq
-    *** Failers
+\= Expect no match
     ax
     axx     
       
 /x{3}yz/
     axxxyzq
     axxxxyzq
-    *** Failers
+\= Expect no match
     ax
     axx     
     ayzq
@@ -175,7 +175,7 @@
     axxyz
     axxxyzq
     axxxxyzq
-    *** Failers
+\= Expect no match
     ax
     axx     
     ayzq
@@ -184,13 +184,12 @@
 /[^a]+/no_auto_possess
     bac
     bcdefax
-    *** Failers
+\= Expect no match
     aaaaa   
 
 /[^a]*/no_auto_possess
     bac
     bcdefax
-    *** Failers
     aaaaa   
     
 /[^a]{3,5}/no_auto_possess
@@ -198,7 +197,7 @@
     awxyza
     abcdefa
     abcdefghijk
-    *** Failers
+\= Expect no match
     axya
     axa
     aaaaa         
@@ -213,25 +212,24 @@
      
 /\d+/
     ab1234c56
-    *** Failers
+\= Expect no match
     xyz
     
 /\D+/
     ab123c56
-    *** Failers
+\= Expect no match
     789
     
 /\d?A/
     045ABC
     ABC
-    *** Failers
+\= Expect no match
     XYZ
     
 /\D?A/
     ABC
     BAC
     9ABC             
-    *** Failers
 
 /a+/
     aaaa
@@ -243,7 +241,7 @@
 /^.+xyz/
     abcdxyz
     axyz
-    *** Failers
+\= Expect no match
     xyz
     
 /^.?xyz/
@@ -253,7 +251,7 @@
 /^\d{2,3}X/
     12X
     123X
-    *** Failers
+\= Expect no match
     X
     1X
     1234X     
@@ -263,7 +261,7 @@
     b93
     c99z
     d04
-    *** Failers
+\= Expect no match
     e45
     abcd      
     abcd1234
@@ -276,7 +274,7 @@
     d04
     abcd1234
     1234  
-    *** Failers
+\= Expect no match
     e45
     abcd      
 
@@ -286,7 +284,7 @@
     c99z
     d04
     abcd1234
-    *** Failers
+\= Expect no match
     1234  
     e45
     abcd      
@@ -301,14 +299,14 @@
     c99z
     d04
     1234  
-    *** Failers
+\= Expect no match
     abcd1234
     e45
 
 /^[abcd]{2,3}\d/
     ab45
     bcd93
-    *** Failers
+\= Expect no match
     1234 
     a36 
     abcd1234
@@ -318,24 +316,23 @@
     abc45
     abcabcabc45
     42xyz 
-    *** Failers
 
 /^(abc)+\d/
     abc45
     abcabcabc45
-    *** Failers
+\= Expect no match
     42xyz 
 
 /^(abc)?\d/
     abc45
     42xyz 
-    *** Failers
+\= Expect no match
     abcabcabc45
 
 /^(abc){2,3}\d/
     abcabc45
     abcabcabc45
-    *** Failers
+\= Expect no match
     abcabcabcabc45
     abc45
     42xyz 
@@ -354,7 +351,7 @@
     abc
     a(b)c
     a(b(c))d  
-    *** Failers)
+\= Expect no match)
     a(b(c)d  
 
 /^>abc>([^()]|\((?1)*\))*<xyz<$/
@@ -364,7 +361,7 @@
 
 /^(?>a*)\d/
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa9876
-    *** Failers 
+\= Expect no match 
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /< (?: (?(R) \d++  | [^<>]*+) | (?R)) * >/x
@@ -374,33 +371,33 @@
     <abc <def> hij>
     <abc<>def> 
     <abc<>      
-    *** Failers
+\= Expect no match
     <abc
 
 /^(?(?=abc)\w{3}:|\d\d)$/
     abc:                          
     12                             
-    *** Failers                     
+\= Expect no match                     
     123                       
     xyz                        
                                 
 /^(?(?!abc)\d\d|\w{3}:)$/
     abc:                        
     12         
-    *** Failers
+\= Expect no match
     123
     xyz    
 
 /^(?=abc)\w{5}:$/
     abcde:                          
-    *** Failers                     
+\= Expect no match                     
     abc.. 
     123                       
     vwxyz                        
                                 
 /^(?!abc)\d\d$/
     12         
-    *** Failers
+\= Expect no match
     abcde:
     abc..  
     123
@@ -409,13 +406,13 @@
 /(?<=abc|xy)123/
     abc12345
     wxy123z
-    *** Failers
+\= Expect no match
     123abc
 
 /(?<!abc|xy)123/
     123abc
     mno123456 
-    *** Failers
+\= Expect no match
     abc12345
     wxy123z
 
@@ -430,7 +427,7 @@
 
 /^abc/
     abcdef
-    *** Failers
+\= Expect no match
     abcdef\=notbol
 
 /^(a*|xyz)/
@@ -438,13 +435,13 @@
     aaabcd
     xyz
     xyz\=notempty
-    *** Failers
+\= Expect no match
     bcd\=notempty
     
 /xyz$/
     xyz
     xyz\n
-    *** Failers
+\= Expect no match
     xyz\=noteol
     xyz\n\=noteol
     
@@ -454,20 +451,20 @@
     abcxyz\npqr 
     abcxyz\npqr\=noteol
     xyz\n\=noteol
-    *** Failers
+\= Expect no match
     xyz\=noteol
 
 /\Gabc/
     abcdef
     defabcxyz\=offset=3
-    *** Failers 
+\= Expect no match 
     defabcxyz
 
 /^abcdef/
     ab\=ps
     abcde\=ps
     abcdef\=ps
-    *** Failers
+\= Expect no match
     abx\=ps
 
 /^a{2,4}\d+z/
@@ -479,7 +476,7 @@
     aaaa12345\=ps
     aa0z\=ps
     aaaa4444444444444z\=ps
-    *** Failers
+\= Expect no match
     az\=ps
     aaaaa\=ps
     a56\=ps
@@ -489,26 +486,26 @@
    def\=dfa_restart
    
 /(?<=foo)bar/
-   xyzfo\=ps
    foob\=ps,offset=2
    foobar...\=ps,dfa_restart,offset=4
-   xyzfo\=ps
    foobar\=offset=2
-   *** Failers
+\= Expect no match
    xyzfo\=ps
    obar\=dfa_restart
 
 /(ab*(cd|ef))+X/
-    adfadadaklhlkalkajhlkjahdfasdfasdfladsfjkj\=ps,noteol
     lkjhlkjhlkjhlkjhabbbbbbcdaefabbbbbbbefa\=ps,notbol,noteol
     cdabbbbbbbb\=ps,notbol,dfa_restart,noteol
     efabbbbbbbbbbbbbbbb\=ps,notbol,dfa_restart,noteol
     bbbbbbbbbbbbcdXyasdfadf\=ps,notbol,dfa_restart,noteol
+\= Expect no match
+    adfadadaklhlkalkajhlkjahdfasdfasdfladsfjkj\=ps,noteol
 
 /the quick brown fox/
     the quick brown fox
-    The quick brown FOX
     What do you know about the quick brown fox?
+\= Expect no match
+    The quick brown FOX
     What do you know about THE QUICK BROWN FOX?
 
 /The quick brown fox/i
@@ -551,7 +548,7 @@
     >>>aaabxyzpqrrrabbxyyyypqAzz
     >aaaabxyzpqrrrabbxyyyypqAzz
     >>>>abcxyzpqrrrabbxyyyypqAzz
-    *** Failers
+\= Expect no match
     abxyzpqrrabbxyyyypqAzz
     abxyzpqrrrrabbxyyyypqAzz
     abxyzpqrrrabxyyyypqAzz
@@ -562,7 +559,7 @@
 /^(abc){1,2}zz/
     abczz
     abcabczz
-    *** Failers
+\= Expect no match
     zz
     abcabcabczz
     >>abczz
@@ -576,7 +573,7 @@
     aac
     abbbbbbbbbbbc
     bbbbbbbbbbbac
-    *** Failers
+\= Expect no match
     aaac
     abbbbbbbbbbbac
 
@@ -589,7 +586,7 @@
     aac
     abbbbbbbbbbbc
     bbbbbbbbbbbac
-    *** Failers
+\= Expect no match
     aaac
     abbbbbbbbbbbac
 
@@ -600,7 +597,7 @@
     babc
     bbabc
     bababc
-    *** Failers
+\= Expect no match
     bababbc
     babababc
 
@@ -608,7 +605,7 @@
     babc
     bbabc
     bababc
-    *** Failers
+\= Expect no match
     bababbc
     babababc
 
@@ -622,7 +619,7 @@
     cthing
     dthing
     ething
-    *** Failers
+\= Expect no match
     fthing
     [thing
     \\thing
@@ -632,7 +629,7 @@
     cthing
     dthing
     ething
-    *** Failers
+\= Expect no match
     athing
     fthing
 
@@ -640,7 +637,7 @@
     fthing
     [thing
     \\thing
-    *** Failers
+\= Expect no match
     athing
     bthing
     ]thing
@@ -651,7 +648,7 @@
 /^[^]cde]/
     athing
     fthing
-    *** Failers
+\= Expect no match
     ]thing
     cthing
     dthing
@@ -676,7 +673,7 @@
     9
     10
     100
-    *** Failers
+\= Expect no match
     abc
 
 /^.*nter/
@@ -687,28 +684,28 @@
 /^xxx[0-9]+$/
     xxx0
     xxx1234
-    *** Failers
+\= Expect no match
     xxx
 
 /^.+[0-9][0-9][0-9]$/
     x123
     xx123
     123456
-    *** Failers
-    123
     x1234
+\= Expect no match
+    123
 
 /^.+?[0-9][0-9][0-9]$/
     x123
     xx123
     123456
-    *** Failers
-    123
     x1234
+\= Expect no match
+    123
 
 /^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/
     abc!pqr=apquxz.ixr.zzz.ac.uk
-    *** Failers
+\= Expect no match
     !pqr=apquxz.ixr.zzz.ac.uk
     abc!=apquxz.ixr.zzz.ac.uk
     abc!pqr=apquxz:ixr.zzz.ac.uk
@@ -716,7 +713,8 @@
 
 /:/
     Well, we need a colon: somewhere
-    *** Fail if we don't
+\= Expect no match
+    No match without a colon
 
 /([\da-f:]+)$/i
     0abc
@@ -727,7 +725,7 @@
     5f03:12C0::932e
     fed def
     Any old stuff
-    *** Failers
+\= Expect no match
     0zzz
     gzzz
     fed\x20
@@ -736,7 +734,7 @@
 /^.*\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/
     .1.2.3
     A.12.123.0
-    *** Failers
+\= Expect no match
     .1.2.3333
     1.2.3
     1234.2.3
@@ -744,7 +742,7 @@
 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/
     1 IN SOA non-sp1 non-sp2(
     1    IN    SOA    non-sp1    non-sp2   (
-    *** Failers
+\= Expect no match
     1IN SOA non-sp1 non-sp2(
 
 /^[a-zA-Z\d][a-zA-Z\d\-]*(\.[a-zA-Z\d][a-zA-z\d\-]*)*\.$/
@@ -754,7 +752,7 @@
     ab-c.pq-r.
     sxk.zzz.ac.uk.
     x-.y-.
-    *** Failers
+\= Expect no match
     -abc.peq.
 
 /^\*\.[a-z]([a-z\-\d]*[a-z\d]+)?(\.[a-z]([a-z\-\d]*[a-z\d]+)?)*$/
@@ -762,7 +760,7 @@
     *.b0-a
     *.c3-b.c
     *.c-a.b-c
-    *** Failers
+\= Expect no match
     *.0
     *.a-
     *.a-b.c-
@@ -786,29 +784,28 @@
     \"1234\"
     \"abcd\" ;
     \"\" ; rhubarb
-    *** Failers
+\= Expect no match
     \"1234\" : things
 
 /^$/
     \
-    *** Failers
 
 /   ^    a   (?# begins with a)  b\sc (?# then b c) $ (?# then end)/x
     ab c
-    *** Failers
+\= Expect no match
     abc
     ab cde
 
 /(?x)   ^    a   (?# begins with a)  b\sc (?# then b c) $ (?# then end)/
     ab c
-    *** Failers
+\= Expect no match
     abc
     ab cde
 
 /^   a\ b[c ]d       $/x
     a bcd
     a b d
-    *** Failers
+\= Expect no match
     abcd
     ab d
 
@@ -862,7 +859,7 @@
     1234567890
     12345678ab
     12345678__
-    *** Failers
+\= Expect no match
     1234567
 
 /^[aeiou\d]{4,5}$/
@@ -870,7 +867,7 @@
     1234
     12345
     aaaaa
-    *** Failers
+\= Expect no match
     123456
 
 /^[aeiou\d]{4,5}?/
@@ -886,7 +883,7 @@
 /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/
     From abcd  Mon Sep 01 12:33:02 1997
     From abcd  Mon Sep  1 12:33:02 1997
-    *** Failers
+\= Expect no match
     From abcd  Sep 01 12:33:02 1997
 
 /^12.34/s
@@ -907,7 +904,7 @@
 
 /^(\D*)(?=\d)(?!123)/
     abc456
-    *** Failers
+\= Expect no match
     abc123
 
 /^1234(?# test newlines
@@ -927,12 +924,12 @@
 
 /(?!^)abc/
     the abc
-    *** Failers
+\= Expect no match
     abc
 
 /(?=^)abc/
     abc
-    *** Failers
+\= Expect no match
     the abc
 
 /^[ab]{1,3}(ab*|b)/no_auto_possess
@@ -1148,7 +1145,7 @@
     A. Other <user.1234\@dom.ain> (a comment)
     \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay
     A missing angle <user\@some.where
-    *** Failers
+\= Expect no match
     The quick brown fox
 
 /[\040\t]*                    # Nab whitespace.
@@ -1740,7 +1737,7 @@
     A. Other <user.1234\@dom.ain> (a comment)
     \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay
     A missing angle <user\@some.where
-    *** Failers
+\= Expect no match
     The quick brown fox
 
 /abc\0def\00pqr\000xyz\0000AB/
@@ -1762,7 +1759,7 @@
 /A\x0{2,3}Z/
     The A\x0\x0Z
     An A\0\x0\0Z
-    *** Failers
+\= Expect no match
     A\0Z
     A\0\x0\0\x0Z
 
@@ -1772,7 +1769,7 @@
     \nabc
     \rabc
     \tabc
-    *** Failers
+\= Expect no match
     abc
 
 /^a	b
@@ -1783,7 +1780,7 @@
     abbbbc
     abbbc
     abbc
-    *** Failers
+\= Expect no match
     abc
     abbbbbc
 
@@ -1798,7 +1795,7 @@
 
 /^[W-c]+$/
     WXY_^abc
-    *** Failers
+\= Expect no match
     wxy
 
 /^[W-c]+$/i
@@ -1817,7 +1814,7 @@
 
 /^abc$/
     abc
-    *** Failers
+\= Expect no match
     qqq\nabc
     abc\nzzz
     qqq\nabc\nzzz
@@ -1825,7 +1822,7 @@
 /\Aabc\Z/m
     abc
     abc\n 
-    *** Failers
+\= Expect no match
     qqq\nabc
     abc\nzzz
     qqq\nabc\nzzz
@@ -1834,7 +1831,7 @@
     abc\ndef
 
 /\A(.)*\Z/m
-    *** Failers
+\= Expect no match
     abc\ndef
 
 /(?:b)|(?::+)/
@@ -1843,17 +1840,17 @@
 
 /[-az]+/
     az-
-    *** Failers
+\= Expect no match
     b
 
 /[az-]+/
     za-
-    *** Failers
+\= Expect no match
     b
 
 /[a\-z]+/
     a-z
-    *** Failers
+\= Expect no match
     b
 
 /[a-z]+/
@@ -1861,12 +1858,12 @@
 
 /[\d-]+/
     12-34
-    *** Failers
+\= Expect no match
     aaa
 
 /[\d-z]+/
     12-34z
-    *** Failers
+\= Expect no match
     aaa
 
 /\x5c/
@@ -1874,7 +1871,7 @@
 
 /\x20Z/
     the Zoo
-    *** Failers
+\= Expect no match
     Zulu
 
 /ab{3cd/
@@ -1891,13 +1888,13 @@
 
 /^a.b/newline=lf
     a\rb
-    *** Failers
+\= Expect no match
     a\nb
 
 /abc$/
     abc
     abc\n
-    *** Failers
+\= Expect no match
     abc\ndef
 
 /(abc)\123/
@@ -1947,7 +1944,7 @@
     baNOTcccd
     baNOTccd
     bacccd
-    *** Failers
+\= Expect no match
     anything
     b\bc   
     baccd
@@ -1969,14 +1966,14 @@
    
 /[^k]$/
     abc
-    *** Failers
+\= Expect no match
     abk   
    
 /[^k]{2,3}$/
     abc
     kbc
     kabc 
-    *** Failers
+\= Expect no match
     abk
     akb
     akk 
@@ -1984,7 +1981,7 @@
 /^\d{8,}\@.+[^k]$/
     12345678\@a.b.c.d
     123456789\@x.y.z
-    *** Failers
+\= Expect no match
     12345678\@x.y.uk
     1234567\@a.b.c.d       
 
@@ -2021,7 +2018,7 @@
 /(\.\d\d((?=0)|\d(?=\d)))/
     1.230003938      
     1.875000282
-    *** Failers 
+\= Expect no match 
     1.235 
     
 /a(?)b/
@@ -2065,13 +2062,13 @@
      
 /^(\D*)(?=\d)(?!123)/
     ABC445
-    *** Failers
+\= Expect no match
     ABC123
     
 /^[W-]46]/
     W46]789 
     -46]789
-    *** Failers
+\= Expect no match
     Wall
     Zebra
     42
@@ -2087,7 +2084,7 @@
     [abcd] 
     ]abcd[
     \\backslash 
-    *** Failers
+\= Expect no match
     -46]789
     well
     
@@ -2096,9 +2093,11 @@
 
 /word (?:[a-zA-Z0-9]+ ){0,10}otherword/
   word cat dog elephant mussel cow horse canary baboon snake shark otherword
+\= Expect no match
   word cat dog elephant mussel cow horse canary baboon snake shark
 
 /word (?:[a-zA-Z0-9]+ ){0,300}otherword/
+\= Expect no match
   word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
 
 /^(a){0,0}/
@@ -2130,27 +2129,31 @@
     aaaaaaaa    
 
 /^(a){1,1}/
-    bcd
     abc
     aab  
+\= Expect no match
+    bcd
 
 /^(a){1,2}/
-    bcd
     abc
     aab  
+\= Expect no match
+    bcd
 
 /^(a){1,3}/
-    bcd
     abc
     aab
     aaa   
+\= Expect no match
+    bcd
 
 /^(a){1,}/
-    bcd
     abc
     aab
     aaa
     aaaaaaaa    
+\= Expect no match
+    bcd
 
 /.*\.gif/
     borfle\nbib.gif\nno
@@ -2194,7 +2197,7 @@
 /(.*X|^B)/
     abcde\n1234Xyz
     BarFoo 
-    *** Failers
+\= Expect no match
     abcde\nBar  
 
 /(.*X|^B)/m
@@ -2205,7 +2208,7 @@
 /(.*X|^B)/s
     abcde\n1234Xyz
     BarFoo 
-    *** Failers
+\= Expect no match
     abcde\nBar  
 
 /(.*X|^B)/ms
@@ -2216,17 +2219,17 @@
 /(?s)(.*X|^B)/
     abcde\n1234Xyz
     BarFoo 
-    *** Failers 
+\= Expect no match 
     abcde\nBar  
 
 /(?s:.*X|^B)/
     abcde\n1234Xyz
     BarFoo 
-    *** Failers 
+\= Expect no match 
     abcde\nBar  
 
 /^.*B/
-    **** Failers
+\= Expect no match
     abc\nB
      
 /(?s)^.*B/
@@ -2264,34 +2267,34 @@
 
 /^[abcdefghijklmnopqrstuvwxy0123456789]/
     n
-    *** Failers 
+\= Expect no match 
     z 
 
 /abcde{0,0}/
     abcd
-    *** Failers
+\= Expect no match
     abce  
 
 /ab[cd]{0,0}e/
     abe
-    *** Failers
+\= Expect no match
     abcde 
     
 /ab(c){0,0}d/
     abd
-    *** Failers
+\= Expect no match
     abcd   
 
 /a(b*)/
     a
     ab
     abbbb
-    *** Failers
+\= Expect no match
     bbbbb    
     
 /ab\d{0}e/
     abe
-    *** Failers
+\= Expect no match
     ab1e   
     
 /"([^\\"]+|\\.)*"/
@@ -2319,7 +2322,7 @@
     
 /a.b/
     acb
-    *** Failers 
+\= Expect no match 
     a\nb   
     
 /a[^a]b/s
@@ -2345,8 +2348,9 @@
     bbbbbac 
     
 /(?!\A)x/m
-    x\nb\n
     a\bx\n  
+\= Expect no match
+    x\nb\n
     
 /\x0{ab}/
     \0{ab} 
@@ -2362,32 +2366,33 @@
     catfood
     arfootle
     rfoosh
-    *** Failers
+\= Expect no match
     barfoo
     towbarfoo
 
 /\w{3}(?<!bar)foo/
     catfood
-    *** Failers
+\= Expect no match
     foo
     barfoo
     towbarfoo
 
 /(?<=(foo)a)bar/
     fooabar
-    *** Failers
+\= Expect no match
     bar
     foobbar
       
 /\Aabc\z/m
     abc
-    *** Failers
+\= Expect no match
     abc\n   
     qqq\nabc
     abc\nzzz
     qqq\nabc\nzzz
 
 "(?>.*/)foo"
+\= Expect no match
     /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/
 
 "(?>.*/)foo"
@@ -2396,12 +2401,12 @@
 /(?>(\.\d\d[1-9]?))\d+/
     1.230003938
     1.875000282
-    *** Failers 
+\= Expect no match 
     1.235 
 
 /^((?>\w+)|(?>\s+))*$/
     now is the time for all good men to come to the aid of the party
-    *** Failers
+\= Expect no match
     this is not a line with only words and spaces!
     
 /(\d+)(\w)/
@@ -2410,7 +2415,7 @@
 
 /((?>\d+))(\w)/
     12345a
-    *** Failers
+\= Expect no match
     12345+ 
 
 /(?>a+)b/
@@ -2437,32 +2442,32 @@
 /\(((?>[^()]+)|\([^()]+\))+\)/
     (abc)
     (abc(def)xyz)
-    *** Failers
+\= Expect no match
     ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa   
 
 /a(?-i)b/i
     ab
     Ab
-    *** Failers 
+\= Expect no match 
     aB
     AB
         
 /(a (?x)b c)d e/
     a bcd e
-    *** Failers
+\= Expect no match
     a b cd e
     abcd e   
     a bcde 
  
 /(a b(?x)c d (?-x)e f)/
     a bcde f
-    *** Failers
+\= Expect no match
     abcdef  
 
 /(a(?i)b)c/
     abc
     aBc
-    *** Failers
+\= Expect no match
     abC
     aBC  
     Abc
@@ -2473,7 +2478,7 @@
 /a(?i:b)c/
     abc
     aBc
-    *** Failers 
+\= Expect no match 
     ABC
     abC
     aBC
@@ -2481,14 +2486,14 @@
 /a(?i:b)*c/
     aBc
     aBBc
-    *** Failers 
+\= Expect no match 
     aBC
     aBBC
     
 /a(?=b(?i)c)\w\wd/
     abcd
     abCd
-    *** Failers
+\= Expect no match
     aBCd
     abcD     
     
@@ -2496,7 +2501,7 @@
     more than million
     more than MILLION
     more \n than Million 
-    *** Failers
+\= Expect no match
     MORE THAN MILLION    
     more \n than \n million 
 
@@ -2504,7 +2509,7 @@
     more than million
     more than MILLION
     more \n than Million 
-    *** Failers
+\= Expect no match
     MORE THAN MILLION    
     more \n than \n million 
     
@@ -2512,7 +2517,7 @@
     abc
     aBbc
     aBBc 
-    *** Failers
+\= Expect no match
     Abc
     abAb    
     abbC 
@@ -2520,7 +2525,7 @@
 /(?=a(?i)b)\w\wc/
     abc
     aBc
-    *** Failers
+\= Expect no match
     Ab 
     abC
     aBC     
@@ -2528,7 +2533,7 @@
 /(?<=a(?i)b)(\w\w)c/
     abxxc
     aBxxc
-    *** Failers
+\= Expect no match
     Abxxc
     ABxxc
     abxxC      
@@ -2536,14 +2541,14 @@
 /^(?(?=abc)\w{3}:|\d\d)$/
     abc:
     12
-    *** Failers
+\= Expect no match
     123
     xyz    
 
 /^(?(?!abc)\d\d|\w{3}:)$/
     abc:
     12
-    *** Failers
+\= Expect no match
     123
     xyz    
     
@@ -2552,7 +2557,7 @@
     cat
     fcat
     focat   
-    *** Failers
+\= Expect no match
     foocat  
 
 /(?(?<!foo)cat|bar)/
@@ -2560,7 +2565,7 @@
     cat
     fcat
     focat   
-    *** Failers
+\= Expect no match
     foocat  
 
 /(?>a*)*/
@@ -2629,7 +2634,7 @@
 /(?(?=[^a-z]+[a-z])  \d{2}-[a-z]{3}-\d{2}  |  \d{2}-\d{2}-\d{2} ) /x
     12-sep-98
     12-09-98
-    *** Failers
+\= Expect no match
     sep-12-98
         
 /(?i:saturday|sunday)/
@@ -2646,7 +2651,7 @@
     aBCx
     bbx
     BBx
-    *** Failers
+\= Expect no match
     abcX
     aBCX
     bbX
@@ -2660,7 +2665,7 @@
     Europe 
     frog
     France
-    *** Failers
+\= Expect no match
     Africa     
 
 /^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)/
@@ -2670,13 +2675,13 @@
     xY
     zebra
     Zambesi
-    *** Failers
+\= Expect no match
     aCD  
     XY  
 
 /(?<=foo\n)^bar/m
     foo\nbar
-    *** Failers
+\= Expect no match
     bar
     baz\nbar   
 
@@ -2684,18 +2689,18 @@
     barbaz
     barbarbaz 
     koobarbaz 
-    *** Failers
+\= Expect no match
     baz
     foobarbaz 
 
-/The following tests are taken from the Perl 5.005 test suite; some of them/
-/are compatible with 5.004, but I'd rather not have to sort them out./
+# The following tests are taken from the Perl 5.005 test suite; some of them
+# are compatible with 5.004, but I'd rather not have to sort them out.
 
 /abc/
     abc
     xabcy
     ababc
-    *** Failers
+\= Expect no match
     xbc
     axc
     abx
@@ -2719,7 +2724,7 @@
 
 /ab+bc/
     abbc
-    *** Failers
+\= Expect no match
     abc
     abq
 
@@ -2736,7 +2741,7 @@
     abbbbc
 
 /ab{4,5}bc/
-    *** Failers
+\= Expect no match
     abq
     abbbbc
 
@@ -2757,7 +2762,7 @@
 
 /^abc$/
     abc
-    *** Failers
+\= Expect no match
     abbbbc
     abcc
 
@@ -2768,8 +2773,8 @@
 
 /abc$/
     aabc
-    *** Failers
     aabc
+\= Expect no match
     aabcd
 
 /^/
@@ -2787,7 +2792,7 @@
 
 /a[bc]d/
     abd
-    *** Failers
+\= Expect no match
     axyzd
     abc
 
@@ -2811,7 +2816,7 @@
 
 /a[^bc]d/
     aed
-    *** Failers
+\= Expect no match
     abd
     abd
 
@@ -2820,8 +2825,8 @@
 
 /a[^]b]c/
     adc
-    *** Failers
     a-c
+\= Expect no match
     a]c
 
 /\ba\b/
@@ -2830,13 +2835,13 @@
     -a-
 
 /\by\b/
-    *** Failers
+\= Expect no match
     xy
     yz
     xyz
 
 /\Ba\B/
-    *** Failers
+\= Expect no match
     a-
     -a
     -a-
@@ -2855,8 +2860,7 @@
 
 /\W/
     -
-    *** Failers
-    -
+\= Expect no match
     a
 
 /a\sb/
@@ -2864,8 +2868,7 @@
 
 /a\Sb/
     a-b
-    *** Failers
-    a-b
+\= Expect no match
     a b
 
 /\d/
@@ -2873,8 +2876,7 @@
 
 /\D/
     -
-    *** Failers
-    -
+\= Expect no match
     1
 
 /[\w]/
@@ -2882,8 +2884,7 @@
 
 /[\W]/
     -
-    *** Failers
-    -
+\= Expect no match
     a
 
 /a[\s]b/
@@ -2891,8 +2892,7 @@
 
 /a[\S]b/
     a-b
-    *** Failers
-    a-b
+\= Expect no match
     a b
 
 /[\d]/
@@ -2900,8 +2900,7 @@
 
 /[\D]/
     -
-    *** Failers
-    -
+\= Expect no match
     1
 
 /ab|cd/
@@ -2921,6 +2920,8 @@
     a((b
 
 /a\\b/
+    a\\b
+\= Expect no match
     a\b
 
 /((a))/
@@ -2960,12 +2961,10 @@
     cde
 
 /abc/
-    *** Failers
+\= Expect no match
     b
-    
 
 /a*/
-    
 
 /([abc])*d/
     abbbcd
@@ -3019,7 +3018,7 @@
     adcdcde
 
 /a[bcd]+dcdcde/
-    *** Failers
+\= Expect no match
     abcde
     adcdcde
 
@@ -3039,7 +3038,7 @@
     effgz
     ij
     reffgz
-    *** Failers
+\= Expect no match
     effg
     bcdd
 
@@ -3050,7 +3049,7 @@
     a
 
 /multiple words of text/
-    *** Failers
+\= Expect no match
     aa
     uh-uh
 
@@ -3078,7 +3077,7 @@
     ABC
     XABCY
     ABABC
-    *** Failers
+\= Expect no match
     aaxabxbaxbbx
     XBC
     AXC
@@ -3101,7 +3100,7 @@
     ABBC
 
 /ab+bc/i
-    *** Failers
+\= Expect no match
     ABC
     ABQ
 
@@ -3120,7 +3119,7 @@
     ABBBBC
 
 /ab{4,5}?bc/i
-    *** Failers
+\= Expect no match
     ABQ
     ABBBBC
 
@@ -3141,7 +3140,7 @@
 
 /^abc$/i
     ABC
-    *** Failers
+\= Expect no match
     ABBBBC
     ABCC
 
@@ -3167,8 +3166,8 @@
     AXYZC
 
 /a.*c/i
-    *** Failers
     AABC
+\= Expect no match
     AXYZD
 
 /a[bc]d/i
@@ -3176,7 +3175,7 @@
 
 /a[b-d]e/i
     ACE
-    *** Failers
+\= Expect no match
     ABC
     ABD
 
@@ -3200,7 +3199,7 @@
 
 /a[^-b]c/i
     ADC
-    *** Failers
+\= Expect no match
     ABD
     A-C
 
@@ -3215,7 +3214,7 @@
     DEF
 
 /$b/i
-    *** Failers
+\= Expect no match
     A]C
     B
 
@@ -3227,6 +3226,7 @@
     A((B
 
 /a\\b/i
+\= Expect no match
     A\=notbol
 
 /((a))/i
@@ -3277,7 +3277,6 @@
 /abc/i
 
 /a*/i
-    
 
 /([abc])*d/i
     ABBBCD
@@ -3305,6 +3304,7 @@
     HIJ
 
 /^(ab|cd)e/i
+\= Expect no match
     ABCDE
 
 /(abc|)ef/i
@@ -3349,7 +3349,7 @@
     EFFGZ
     IJ
     REFFGZ
-    *** Failers
+\= Expect no match
     ADCDCDE
     EFFG
     BCDD
@@ -3367,7 +3367,7 @@
     C
 
 /multiple words of text/i
-    *** Failers
+\= Expect no match
     AA
     UH-UH
 
@@ -3460,7 +3460,7 @@
 
 /(?<=a)b/
     ab
-    *** Failers
+\= Expect no match
     cb
     b
 
@@ -3506,7 +3506,7 @@
     Ab
 
 /(?:(?i)a)b/
-    *** Failers
+\= Expect no match
     cb
     aB
 
@@ -3525,7 +3525,7 @@
     Ab
 
 /(?i:a)b/
-    *** Failers
+\= Expect no match
     aB
     aB
 
@@ -3544,8 +3544,8 @@
     aB
 
 /(?:(?-i)a)b/i
-    *** Failers
     aB
+\= Expect no match
     Ab
 
 /((?-i)a)b/i
@@ -3557,7 +3557,7 @@
     aB
 
 /(?:(?-i)a)b/i
-    *** Failers
+\= Expect no match
     Ab
     AB
 
@@ -3576,7 +3576,7 @@
     aB
 
 /(?-i:a)b/i
-    *** Failers
+\= Expect no match
     AB
     Ab
 
@@ -3589,14 +3589,14 @@
     aB
 
 /(?-i:a)b/i
-    *** Failers
+\= Expect no match
     Ab
     AB
 
 /((?-i:a))b/i
 
 /((?-i:a.))b/i
-    *** Failers
+\= Expect no match
     AB
     a\nB
 
@@ -3622,7 +3622,7 @@
     aaac
 
 /(?<![cd])b/
-    *** Failers
+\= Expect no match
     B\nB
     dbcb
 
@@ -3638,7 +3638,7 @@
     cdaccb
 
 /^(?:a?b?)*$/
-    *** Failers
+\= Expect no match
     dbcb
     a--
 
@@ -3671,7 +3671,7 @@
 /^b/
 
 /()^b/
-    *** Failers
+\= Expect no match
     a\nb\nc\n
     a\nb\nc\n
 
@@ -3684,7 +3684,7 @@
     a
 
 /(?(?=a)b|a)/
-    *** Failers
+\= Expect no match
     a
     a
 
@@ -3710,7 +3710,7 @@
 /([\w:]+::)?(\w+)$/
     abcd
     xy:z:::abcd
-    *** Failers
+\= Expect no match
     abcd:
     abcd:
 
@@ -3741,7 +3741,7 @@
     ((abc(ade)ufh()()x
 
 /a\Z/
-    *** Failers
+\= Expect no match
     aaab
     a\nb\n
 
@@ -3755,43 +3755,44 @@
 
 /b\z/
     a\nb
-    *** Failers
     
 /(?>.*)(?<=(abcd|wxyz))/
     alphabetabcd
     endingwxyz
-    *** Failers
+\= Expect no match
     a rather long string that doesn't end with one of them
 
 /word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/
     word cat dog elephant mussel cow horse canary baboon snake shark otherword
+\= Expect no match
     word cat dog elephant mussel cow horse canary baboon snake shark
   
 /word (?>[a-zA-Z0-9]+ ){0,30}otherword/
+\= Expect no match
     word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
 
 /(?<=\d{3}(?!999))foo/
     999foo
     123999foo 
-    *** Failers
+\= Expect no match
     123abcfoo
     
 /(?<=(?!...999)\d{3})foo/
     999foo
     123999foo 
-    *** Failers
+\= Expect no match
     123abcfoo
 
 /(?<=\d{3}(?!999)...)foo/
     123abcfoo
     123456foo 
-    *** Failers
+\= Expect no match
     123999foo  
     
 /(?<=\d{3}...)(?<!999)foo/
     123abcfoo   
     123456foo 
-    *** Failers
+\= Expect no match
     123999foo  
 
 /((Z)+|A)*/
@@ -3816,7 +3817,7 @@
     abcde
     -things
     0digit
-    *** Failers
+\= Expect no match
     bcdef    
     
 /[[:space:]]+/
@@ -3838,7 +3839,8 @@
   a\nxb\n
 
 /(?!^)x/m
-  a\nxb\n
+\= Expect no match
+    a\nxb\n
 
 /abc\Qabc\Eabc/
     abcabcabc
@@ -3848,7 +3850,7 @@
 
 /   abc\Q abc\Eabc/x
     abc abcabc
-    *** Failers
+\= Expect no match
     abcabcabc  
     
 /abc#comment
@@ -3880,7 +3882,7 @@
 
 /\Gabc/
     abc
-    *** Failers
+\= Expect no match
     xyzabc  
 
 /\Gabc./g
@@ -3891,7 +3893,7 @@
 
 /a(?x: b c )d/
     XabcdY
-    *** Failers 
+\= Expect no match 
     Xa b c d Y 
 
 /((?x)x y z | a b c)/
@@ -3900,13 +3902,13 @@
 
 /(?i)AB(?-i)C/
     XabCY
-    *** Failers
+\= Expect no match
     XabcY  
 
 /((?i)AB(?-i)C|D)E/
     abCE
     DE
-    *** Failers
+\= Expect no match
     abcE
     abCe  
     dE
@@ -3918,10 +3920,11 @@
     -
     d
     ] 
-    *** Failers
+\= Expect no match
     b     
 
 /(a+)*b/
+\= Expect no match
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 
     
 /(?i)reg(?:ul(?:[a�]|ae)r|ex)/
@@ -3952,16 +3955,17 @@
 
 /line\nbreak/firstline
     this is a line\nbreak
-    ** Failers 
+\= Expect no match 
     line one\nthis is a line\nbreak in the second line 
 
 /line\nbreak/m,firstline
     this is a line\nbreak
-    ** Failers 
+\= Expect no match 
     line one\nthis is a line\nbreak in the second line 
 
 /1234/
     123\=ps
+\= Expect no match 
     a4\=ps,dfa_restart
 
 /1234/
@@ -4006,7 +4010,7 @@
 /^abc/Im,newline=lf
     xyz\nabc
     xyz\r\nabc
-    ** Failers
+\= Expect no match
     xyz\rabc
     xyzabc\r
     xyzabc\rpqr
@@ -4015,13 +4019,13 @@
 
 /^abc/Im,newline=crlf
     xyz\r\nabclf>
-    ** Failers
+\= Expect no match
     xyz\nabclf
     xyz\rabclf
     
 /^abc/Im,newline=cr
     xyz\rabc
-    ** Failers
+\= Expect no match
     xyz\nabc
     xyz\r\nabc
 
@@ -4066,34 +4070,37 @@
     aaaa
 
 /(a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /(?>a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /(?:a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
 /^a.b/newline=lf
     a\rb
-    ** Failers
+\= Expect no match
     a\nb
 
 /^a.b/newline=cr
     a\nb
-    ** Failers
+\= Expect no match
     a\rb
 
 /^a.b/newline=anycrlf
     a\x85b
-    ** Failers
+\= Expect no match
     a\rb
 
 /^a.b/newline=any
-    ** Failers
+\= Expect no match
     a\nb
     a\rb
     a\x85b
@@ -4111,7 +4118,7 @@
     a\x0bb
     a\x0cb
     a\x85b   
-    ** Failers
+\= Expect no match
     a\n\rb    
 
 /^a\R*b/bsr=unicode
@@ -4134,7 +4141,7 @@
     a\x85b   
     a\n\rb    
     a\n\r\x85\x0cb 
-    ** Failers
+\= Expect no match
     ab  
     
 /^a\R{1,3}b/bsr=unicode
@@ -4145,25 +4152,25 @@
     a\r\n\r\n\r\nb 
     a\n\r\n\rb
     a\n\n\r\nb 
-    ** Failers
+\= Expect no match
     a\n\n\n\rb
     a\r
 
 /.+foo/
     afoo
-    ** Failers 
+\= Expect no match 
     \r\nfoo 
     \nfoo 
 
 /.+foo/newline=crlf
     afoo
     \nfoo 
-    ** Failers 
+\= Expect no match 
     \r\nfoo 
 
 /.+foo/newline=any
     afoo
-    ** Failers 
+\= Expect no match 
     \nfoo 
     \r\nfoo 
 
@@ -4175,12 +4182,12 @@
 /^$/gm,newline=any
     abc\r\rxyz
     abc\n\rxyz  
-    ** Failers 
+\= Expect no match 
     abc\r\nxyz
 
 /^X/m
     XABC
-    ** Failers 
+\= Expect no match 
     XABC\=notbol
 
 /(?m)^$/g,newline=any,aftertext
@@ -4207,20 +4214,20 @@
 /(?|(abc)|(xyz))(?1)/
     abcabc
     xyzabc 
-    ** Failers 
+\= Expect no match 
     xyzxyz 
  
 /\H\h\V\v/
     X X\x0a
     X\x09X\x0b
-    ** Failers
+\= Expect no match
     \xa0 X\x0a   
     
 /\H*\h+\V?\v{3,4}/
     \x09\x20\xa0X\x0a\x0b\x0c\x0d\x0a
     \x09\x20\xa0\x0a\x0b\x0c\x0d\x0a
     \x09\x20\xa0\x0a\x0b\x0c
-    ** Failers 
+\= Expect no match 
     \x09\x20\xa0\x0a\x0b
      
 /\H{3,4}/
@@ -4233,7 +4240,7 @@
 /\h*X\h?\H+Y\H?Z/
     >XNNNYZ
     >  X NYQZ
-    ** Failers
+\= Expect no match
     >XYZ   
     >  X NY Z
 
@@ -4242,6 +4249,7 @@
     >\x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c
 
 /.+A/newline=crlf
+\= Expect no match
     \r\nA
     
 /\nA/newline=crlf
@@ -4257,7 +4265,7 @@
     a\rb
     a\nb
     a\r\nb
-    ** Failers
+\= Expect no match
     a\x85b
     a\x0bb     
 
@@ -4272,7 +4280,7 @@
     a\rb
     a\nb
     a\r\nb
-    ** Failers
+\= Expect no match
     a\x85b
     a\x0bb     
 
@@ -4287,49 +4295,49 @@
     a\r\n\nb
     a\n\r\rb
     a\r\n\r\n\r\n\r\nb
-    ** Failers
+\= Expect no match
+    a\x0b\x0bb     
     a\x85\x85b
-    a\x0b\0bb     
 
 /a\R{2,4}b/I,bsr=unicode
     a\r\rb
     a\n\n\nb
     a\r\n\n\r\rb
     a\x85\x85b
-    a\x0b\0bb     
-    ** Failers 
+    a\x0b\x0bb     
+\= Expect no match 
     a\r\r\r\r\rb 
     
 /a(?!)|\wbc/
     abc 
 
 /a[]b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
+\= Expect no match
     ab
 
 /a[]+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
+\= Expect no match
     ab 
 
 /a[]*+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
+\= Expect no match
     ab 
 
 /a[^]b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aXb
     a\nb 
-    ** Failers
+\= Expect no match
     ab  
     
 /a[^]+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aXb
     a\nX\nXb 
-    ** Failers
+\= Expect no match
     ab  
 
 /X$/dollar_endonly
     X
-    ** Failers 
+\= Expect no match 
     X\n 
 
 /X$/
@@ -4339,13 +4347,13 @@
 /xyz/auto_callout
   xyz 
   abcxyz 
-  ** Failers 
+\= Expect no match 
   abc
   abcxypqr  
 
 /xyz/auto_callout,no_start_optimize
   abcxyz 
-  ** Failers 
+\= Expect no match 
   abc
   abcxypqr  
 
@@ -4369,10 +4377,12 @@
     ++++123999Y\=ps
 
 /Z(*F)/
+\= Expect no match 
     Z\=ps
     ZA\=ps
     
 /Z(?!)/
+\= Expect no match 
     Z\=ps
     ZA\=ps
 
@@ -4394,6 +4404,7 @@
 
 /Z(*F)Q|ZXY/
     Z\=ps
+\= Expect no match 
     ZA\=ps
     X\=ps
 
@@ -4432,13 +4443,13 @@
 /(abc|def|xyz)/I
     terhjk;abcdaadsfe
     the quick xyz brown fox 
-    ** Failers
+\= Expect no match
     thejk;adlfj aenjl;fda asdfasd ehj;kjxyasiupd
 
 /(abc|def|xyz)/I,no_start_optimize
     terhjk;abcdaadsfe
     the quick xyz brown fox
-    ** Failers
+\= Expect no match
     thejk;adlfj aenjl;fda asdfasd ehj;kjxyasiupd
 
 /abcd*/aftertext
@@ -4465,13 +4476,13 @@
 /(?:(?1)|B)(A(*F)|C)/
     ABCD
     CCD
-    ** Failers
+\= Expect no match
     CAD   
 
 /^(?:(?1)|B)(A(*F)|C)/
     CCD
     BCD 
-    ** Failers
+\= Expect no match
     ABCD
     CAD
     BAD    
@@ -4480,7 +4491,6 @@
     ac
     
 /^(?=a(*SKIP)b|ac)/
-    ** Failers
     ac
     
 /^(?=a(*THEN)b|ac)/
@@ -4488,8 +4498,6 @@
     
 /^(?=a(*PRUNE)b)/
     ab  
-    ** Failers 
-    ac
 
 /^(?(?!a(*SKIP)b))/
     ac
@@ -4526,68 +4534,71 @@
     abc\=ph
 
 /abc\B/
-    abc
     abc\=ps
     abc\=ph
+\= Expect no match 
+    abc
 
 /.+/
     abc\=offset=0
     abc\=offset=1
     abc\=offset=2
-    abc\=offset=3
+\= Bad offsets
     abc\=offset=4
     abc\=offset=-4 
+\= Expect no match 
+    abc\=offset=3
 
 /^(?:a)++\w/
      aaaab
-     ** Failers 
+\= Expect no match 
      aaaa 
      bbb 
 
 /^(?:aa|(?:a)++\w)/
      aaaab
      aaaa 
-     ** Failers 
+\= Expect no match 
      bbb 
 
 /^(?:a)*+\w/
      aaaab
      bbb 
-     ** Failers 
+\= Expect no match 
      aaaa 
 
 /^(a)++\w/
      aaaab
-     ** Failers 
+\= Expect no match 
      aaaa 
      bbb 
 
 /^(a|)++\w/
      aaaab
-     ** Failers 
+\= Expect no match 
      aaaa 
      bbb 
 
 /(?=abc){3}abc/aftertext
     abcabcabc
-    ** Failers
+\= Expect no match
     xyz  
     
 /(?=abc)+abc/aftertext
     abcabcabc
-    ** Failers
+\= Expect no match
     xyz  
     
 /(?=abc)++abc/aftertext
     abcabcabc
-    ** Failers
+\= Expect no match
     xyz  
     
 /(?=abc){0}xyz/
     xyz 
 
 /(?=abc){1}xyz/
-    ** Failers
+\= Expect no match
     xyz 
     
 /(?=(a))?./
@@ -4634,12 +4645,6 @@
     aaaa\=ovector=3
     aaaa\=ovector=4
 
-/ab\Cde/
-    abXde
-    
-/(?<=ab\Cde)X/
-    abZdeX
-
 /^\R/
     \r\=ps
     \r\=ph
@@ -4848,6 +4853,7 @@
 
 /(?(?!)a|b)/
     bbb
+\= Expect no match
     aaa 
 
 /^/gm
@@ -4856,4 +4862,21 @@
 /^/gm,alt_circumflex
     \n\n\n
 
+/abc/use_offset_limit
+    1234abcde\=offset_limit=100
+    1234abcde\=offset_limit=9
+    1234abcde\=offset_limit=4
+    1234abcde\=offset_limit=4,offset=4
+\= Expect no match
+    1234abcde\=offset_limit=4,offset=5
+    1234abcde\=offset_limit=3
+
+/(?<=abc)/use_offset_limit
+    1234abc\=offset_limit=7
+\= Expect no match
+    1234abc\=offset_limit=6
+
+/abcd/null_context
+    abcd\=null_context
+
 # End of testinput6
diff --git a/testdata/testinput7 b/testdata/testinput7
index 879a414..ef30223 100644
--- a/testdata/testinput7
+++ b/testdata/testinput7
@@ -3,6 +3,7 @@
 # used to force DFA matching for all tests.
 
 #subject dfa
+#newline_default LF any anyCRLF
 
 /\x{100}ab/utf
   \x{100}ab
@@ -15,19 +16,19 @@
 /a\x{100}+b/utf
     a\x{100}b  
     a\x{100}\x{100}b  
-    *** Failers 
+\= Expect no match 
     ab
      
 /\bX/utf
     Xoanon
     +Xoanon
     \x{300}Xoanon 
-    *** Failers 
+\= Expect no match 
     YXoanon  
     
 /\BX/utf
     YXoanon
-    *** Failers
+\= Expect no match
     Xoanon
     +Xoanon    
     \x{300}Xoanon 
@@ -36,12 +37,12 @@
     X+oanon
     ZX\x{300}oanon 
     FAX 
-    *** Failers 
+\= Expect no match 
     Xoanon  
     
 /X\B/utf
     Xoanon  
-    *** Failers
+\= Expect no match
     X+oanon
     ZX\x{300}oanon 
     FAX 
@@ -54,7 +55,7 @@
     ab99
     \x{123}\x{123}45
     \x{400}\x{401}\x{402}6  
-    *** Failers
+\= Expect no match
     d99
     \x{123}\x{122}4   
     \x{400}\x{403}6  
@@ -64,14 +65,14 @@
     acb
     a\x7fb
     a\x{100}b 
-    *** Failers
+\= Expect no match
     a\nb  
 
 /a(.{3})b/utf
     a\x{4000}xyb 
     a\x{4000}\x7fyb 
     a\x{4000}\x{100}yb 
-    *** Failers
+\= Expect no match
     a\x{4000}b 
     ac\ncb 
 
@@ -109,7 +110,7 @@
     a\x{1234}xyb 
     a\x{1234}\x{4321}yb 
     a\x{1234}\x{4321}\x{3412}b 
-    *** Failers
+\= Expect no match
     a\x{1234}b 
     ac\ncb 
 
@@ -119,7 +120,7 @@
     a\x{1234}\x{4321}\x{3412}b 
     axxxxbcdefghijb 
     a\x{1234}\x{4321}\x{3412}\x{3421}b 
-    *** Failers
+\= Expect no match
     a\x{1234}b 
 
 /a(.{3,}?)b/utf
@@ -128,7 +129,7 @@
     a\x{1234}\x{4321}\x{3412}b 
     axxxxbcdefghijb 
     a\x{1234}\x{4321}\x{3412}\x{3421}b 
-    *** Failers
+\= Expect no match
     a\x{1234}b 
 
 /a(.{3,5})b/utf
@@ -139,7 +140,7 @@
     a\x{1234}\x{4321}\x{3412}\x{3421}b 
     axbxxbcdefghijb 
     axxxxxbcdefghijb 
-    *** Failers
+\= Expect no match
     a\x{1234}b 
     axxxxxxbcdefghijb 
 
@@ -151,12 +152,12 @@
     a\x{1234}\x{4321}\x{3412}\x{3421}b 
     axbxxbcdefghijb 
     axxxxxbcdefghijb 
-    *** Failers
+\= Expect no match
     a\x{1234}b 
     axxxxxxbcdefghijb 
 
 /^[a\x{c0}]/utf
-    *** Failers
+\= Expect no match
     \x{100}
 
 /(?<=aXb)cd/utf
@@ -170,19 +171,19 @@
     
 /(?:\x{100}){3}b/utf
     \x{100}\x{100}\x{100}b
-    *** Failers 
+\= Expect no match 
     \x{100}\x{100}b
 
 /\x{ab}/utf
     \x{ab} 
     \xc2\xab
-    *** Failers 
+\= Expect no match 
     \x00{ab}
 
 /(?<=(.))X/utf
     WXYZ
     \x{256}XYZ 
-    *** Failers
+\= Expect no match
     XYZ 
 
 /[^a]+/g,utf
@@ -269,128 +270,122 @@
     
 /\D+/utf
     12abcd34
-    *** Failers
+\= Expect no match
     1234  
 
 /\D{2,3}/utf
     12abcd34
     12ab34
-    *** Failers  
+\= Expect no match  
     1234
     12a34  
 
 /\D{2,3}?/utf
     12abcd34
     12ab34
-    *** Failers  
+\= Expect no match  
     1234
     12a34  
 
 /\d+/utf
     12abcd34
-    *** Failers
 
 /\d{2,3}/utf
     12abcd34
     1234abcd
-    *** Failers  
+\= Expect no match  
     1.4 
 
 /\d{2,3}?/utf
     12abcd34
     1234abcd
-    *** Failers  
+\= Expect no match  
     1.4 
 
 /\S+/utf
     12abcd34
-    *** Failers
+\= Expect no match
     \    \ 
 
 /\S{2,3}/utf
     12abcd34
     1234abcd
-    *** Failers
+\= Expect no match
     \     \  
 
 /\S{2,3}?/utf
     12abcd34
     1234abcd
-    *** Failers
+\= Expect no match
     \     \  
 
 />\s+</utf
     12>      <34
-    *** Failers
 
 />\s{2,3}</utf
     ab>  <cd
     ab>   <ce
-    *** Failers
+\= Expect no match
     ab>    <cd 
 
 />\s{2,3}?</utf
     ab>  <cd
     ab>   <ce
-    *** Failers
+\= Expect no match
     ab>    <cd 
 
 /\w+/utf
     12      34
-    *** Failers
+\= Expect no match
     +++=*! 
 
 /\w{2,3}/utf
     ab  cd
     abcd ce
-    *** Failers
+\= Expect no match
     a.b.c
 
 /\w{2,3}?/utf
     ab  cd
     abcd ce
-    *** Failers
+\= Expect no match
     a.b.c
 
 /\W+/utf
     12====34
-    *** Failers
+\= Expect no match
     abcd 
 
 /\W{2,3}/utf
     ab====cd
     ab==cd
-    *** Failers
+\= Expect no match
     a.b.c
 
 /\W{2,3}?/utf
     ab====cd
     ab==cd
-    *** Failers
+\= Expect no match
     a.b.c
 
 /[\x{100}]/utf
     \x{100}
     Z\x{100}
     \x{100}Z
-    *** Failers 
 
 /[Z\x{100}]/utf
     Z\x{100}
     \x{100}
     \x{100}Z
-    *** Failers 
 
 /[\x{100}\x{200}]/utf
    ab\x{100}cd
    ab\x{200}cd
-   *** Failers  
 
 /[\x{100}-\x{200}]/utf
    ab\x{100}cd
    ab\x{200}cd
    ab\x{111}cd 
-   *** Failers  
 
 /[z-\x{200}]/utf
    ab\x{100}cd
@@ -398,20 +393,17 @@
    ab\x{111}cd 
    abzcd
    ab|cd  
-   *** Failers  
 
 /[Q\x{100}\x{200}]/utf
    ab\x{100}cd
    ab\x{200}cd
    Q? 
-   *** Failers  
 
 /[Q\x{100}-\x{200}]/utf
    ab\x{100}cd
    ab\x{200}cd
    ab\x{111}cd 
    Q? 
-   *** Failers  
 
 /[Qz-\x{200}]/utf
    ab\x{100}cd
@@ -420,48 +412,43 @@
    abzcd
    ab|cd  
    Q? 
-   *** Failers  
 
 /[\x{100}\x{200}]{1,3}/utf
    ab\x{100}cd
    ab\x{200}cd
    ab\x{200}\x{100}\x{200}\x{100}cd
-   *** Failers  
 
 /[\x{100}\x{200}]{1,3}?/utf
    ab\x{100}cd
    ab\x{200}cd
    ab\x{200}\x{100}\x{200}\x{100}cd
-   *** Failers  
 
 /[Q\x{100}\x{200}]{1,3}/utf
    ab\x{100}cd
    ab\x{200}cd
    ab\x{200}\x{100}\x{200}\x{100}cd
-   *** Failers  
 
 /[Q\x{100}\x{200}]{1,3}?/utf
    ab\x{100}cd
    ab\x{200}cd
    ab\x{200}\x{100}\x{200}\x{100}cd
-   *** Failers  
 
 /(?<=[\x{100}\x{200}])X/utf
     abc\x{200}X
     abc\x{100}X 
-    *** Failers
+\= Expect no match
     X  
 
 /(?<=[Q\x{100}\x{200}])X/utf
     abc\x{200}X
     abc\x{100}X 
     abQX 
-    *** Failers
+\= Expect no match
     X  
 
 /(?<=[\x{100}\x{200}]{3})X/utf
     abc\x{100}\x{200}\x{100}X
-    *** Failers
+\= Expect no match
     abc\x{200}X
     X  
 
@@ -469,7 +456,7 @@
     AX
     \x{150}X
     \x{500}X 
-    *** Failers
+\= Expect no match
     \x{100}X
     \x{200}X   
 
@@ -477,7 +464,7 @@
     AX
     \x{150}X
     \x{500}X 
-    *** Failers
+\= Expect no match
     \x{100}X
     \x{200}X   
     QX 
@@ -485,7 +472,7 @@
 /[^\x{100}-\x{200}]X/utf
     AX
     \x{500}X 
-    *** Failers
+\= Expect no match
     \x{100}X
     \x{150}X
     \x{200}X   
@@ -494,7 +481,7 @@
     z
     Z 
     \x{100}
-    *** Failers
+\= Expect no match
     \x{102}
     y    
 
@@ -512,19 +499,24 @@
     \x{123} 
 
 /^[ac]*b/utf
-  xb
+\= Expect no match
+    xb
 
 /^[ac\x{100}]*b/utf
-  xb
+\= Expect no match
+    xb
 
 /^[^x]*b/i,utf
-  xb
+\= Expect no match
+    xb
 
 /^[^x]*b/utf
-  xb
+\= Expect no match
+    xb
   
 /^\d*b/utf
-  xb 
+\= Expect no match
+    xb 
 
 /(|a)/g,utf
     catac
@@ -548,7 +540,7 @@
     a\x{85}b   
     a\x{2028}b 
     a\x{2029}b 
-    ** Failers
+\= Expect no match
     a\n\rb    
 
 /^a\R*b/bsr=unicode,utf
@@ -571,7 +563,7 @@
     a\x{85}b   
     a\n\rb    
     a\n\r\x{85}\x0cb 
-    ** Failers
+\= Expect no match
     ab  
 
 /^a\R{1,3}b/bsr=unicode,utf
@@ -582,7 +574,7 @@
     a\r\n\r\n\r\nb 
     a\n\r\n\rb
     a\n\n\r\nb 
-    ** Failers
+\= Expect no match
     a\n\n\n\rb
     a\r
 
@@ -601,34 +593,34 @@
 /\H\h\V\v/utf
     X X\x0a
     X\x09X\x0b
-    ** Failers
+\= Expect no match
     \x{a0} X\x0a   
     
 /\H*\h+\V?\v{3,4}/utf,no_auto_possess
     \x09\x20\x{a0}X\x0a\x0b\x0c\x0d\x0a
     \x09\x20\x{a0}\x0a\x0b\x0c\x0d\x0a
     \x09\x20\x{a0}\x0a\x0b\x0c
-    ** Failers 
+\= Expect no match 
     \x09\x20\x{a0}\x0a\x0b
      
 /\H\h\V\v/utf
     \x{3001}\x{3000}\x{2030}\x{2028}
     X\x{180e}X\x{85}
-    ** Failers
+\= Expect no match
     \x{2009} X\x0a   
     
 /\H*\h+\V?\v{3,4}/utf,no_auto_possess
     \x{1680}\x{180e}\x{2007}X\x{2028}\x{2029}\x0c\x0d\x0a
     \x09\x{205f}\x{a0}\x0a\x{2029}\x0c\x{2028}\x0a
     \x09\x20\x{202f}\x0a\x0b\x0c
-    ** Failers 
+\= Expect no match 
     \x09\x{200a}\x{a0}\x{2028}\x0b
      
 /a\Rb/I,bsr=anycrlf,utf
     a\rb
     a\nb
     a\r\nb
-    ** Failers
+\= Expect no match
     a\x{85}b
     a\x0bb     
 
@@ -643,7 +635,7 @@
     a\rb
     a\nb
     a\r\nb
-    ** Failers
+\= Expect no match
     a\x{85}b
     a\x0bb     
 
@@ -679,11 +671,6 @@
     the cat\=ps
     the cat\=ph
 
-/ab\Cde/utf
-    abXde
-
-/(?<=ab\Cde)X/utf
-
 /./newline=crlf,utf
     \r\=ps
     \r\=ph
@@ -712,7 +699,7 @@
 
 /\pL\P{Nd}/utf
     AB
-    *** Failers
+\= Expect no match
     A0
     00
 
@@ -720,25 +707,24 @@
     AB
     A\x{300}BC
     A\x{300}\x{301}\x{302}BC
-    *** Failers
+\= Expect no match
     \x{300}
 
 /\X\X/utf
     ABC
     A\x{300}B\x{300}\x{301}C
     A\x{300}\x{301}\x{302}BC
-    *** Failers
+\= Expect no match
     \x{300}
 
 /^\pL+/utf
     abcd
     a
-    *** Failers
 
 /^\PL+/utf
     1234
     =
-    *** Failers
+\= Expect no match
     abcd
 
 /^\X+/utf
@@ -746,7 +732,6 @@
     A\x{300}\x{301}\x{302}
     A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}
     a
-    *** Failers
     \x{300}\x{301}\x{302}
 
 /\X?abc/utf
@@ -754,46 +739,43 @@
     A\x{300}abc
     A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abcxyz
     \x{300}abc
-    *** Failers
 
 /^\X?abc/utf
     abc
     A\x{300}abc
-    *** Failers
-    A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abcxyz
     \x{300}abc
+\= Expect no match
+    A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abcxyz
 
 /\X*abc/utf
     abc
     A\x{300}abc
     A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abcxyz
     \x{300}abc
-    *** Failers
 
 /^\X*abc/utf
     abc
     A\x{300}abc
     A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abcxyz
-    *** Failers
     \x{300}abc
 
 /^\pL?=./utf
     A=b
     =c
-    *** Failers
+\= Expect no match
     1=2
     AAAA=b
 
 /^\pL*=./utf
     AAAA=b
     =c
-    *** Failers
+\= Expect no match
     1=2
 
 /^\X{2,3}X/utf
     A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}X
     A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}X
-    *** Failers
+\= Expect no match
     X
     A\x{300}\x{301}\x{302}X
     A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}X
@@ -801,48 +783,48 @@
 /^\pC\pL\pM\pN\pP\pS\pZ</utf
     \x7f\x{c0}\x{30f}\x{660}\x{66c}\x{f01}\x{1680}<
     \np\x{300}9!\$ <
-    ** Failers
+\= Expect no match
     ap\x{300}9!\$ <
   
 /^\PC/utf
     X
-    ** Failers
+\= Expect no match
     \x7f
   
 /^\PL/utf
     9
-    ** Failers
+\= Expect no match
     \x{c0}
   
 /^\PM/utf
     X
-    ** Failers
+\= Expect no match
     \x{30f}
   
 /^\PN/utf
     X
-    ** Failers
+\= Expect no match
     \x{660}
   
 /^\PP/utf
     X
-    ** Failers
+\= Expect no match
     \x{66c}
   
 /^\PS/utf
     X
-    ** Failers
+\= Expect no match
     \x{f01}
   
 /^\PZ/utf
     X
-    ** Failers
+\= Expect no match
     \x{1680}
     
 /^\p{Cc}/utf
     \x{017}
     \x{09f}
-    ** Failers
+\= Expect no match
     \x{0600}
   
 /^\p{Cf}/utf
@@ -853,60 +835,60 @@
     \x{2067}
     \x{2068}
     \x{2069}
-    ** Failers
+\= Expect no match
     \x{09f}
   
 /^\p{Cn}/utf
-    ** Failers
+\= Expect no match
     \x{09f}
   
 /^\p{Co}/utf
     \x{f8ff}
-    ** Failers
+\= Expect no match
     \x{09f}
   
 /^\p{Cs}/utf
     \x{dfff}\=no_utf_check
-    ** Failers
+\= Expect no match
     \x{09f}
   
 /^\p{Ll}/utf
     a
-    ** Failers
+\= Expect no match
     Z
     \x{e000}
   
 /^\p{Lm}/utf
     \x{2b0}
-    ** Failers
+\= Expect no match
     a
   
 /^\p{Lo}/utf
     \x{1bb}
-    ** Failers
+\= Expect no match
     a
     \x{2b0}
   
 /^\p{Lt}/utf
     \x{1c5}
-    ** Failers
+\= Expect no match
     a
     \x{2b0}
   
 /^\p{Lu}/utf
     A
-    ** Failers
+\= Expect no match
     \x{2b0}
   
 /^\p{Mc}/utf
     \x{903}
-    ** Failers
+\= Expect no match
     X
     \x{300}
        
 /^\p{Me}/utf
     \x{488}
-    ** Failers
+\= Expect no match
     X
     \x{903}
     \x{300}
@@ -914,7 +896,7 @@
 /^\p{Mn}/utf
     \x{300}
     \x{1a1b}
-    ** Failers
+\= Expect no match
     X
     \x{903}
   
@@ -922,26 +904,26 @@
     0123456789\x{660}\x{661}\x{662}\x{663}\x{664}\x{665}\x{666}\x{667}\x{668}\x{669}\x{66a}
     \x{6f0}\x{6f1}\x{6f2}\x{6f3}\x{6f4}\x{6f5}\x{6f6}\x{6f7}\x{6f8}\x{6f9}\x{6fa}
     \x{966}\x{967}\x{968}\x{969}\x{96a}\x{96b}\x{96c}\x{96d}\x{96e}\x{96f}\x{970}
-    ** Failers
+\= Expect no match
     X
   
 /^\p{Nl}/utf
     \x{16ee}
-    ** Failers
+\= Expect no match
     X
     \x{966}
   
 /^\p{No}/utf
     \x{b2}
     \x{b3}
-    ** Failers
+\= Expect no match
     X
     \x{16ee}
   
 /^\p{Pc}/utf
     \x5f
     \x{203f}
-    ** Failers
+\= Expect no match
     X
     -
     \x{58a}
@@ -949,7 +931,7 @@
 /^\p{Pd}/utf
     -
     \x{58a}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
   
@@ -960,7 +942,7 @@
     \x{f3b}
     \x{2309}
     \x{230b}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
     (
@@ -971,21 +953,21 @@
 /^\p{Pf}/utf
     \x{bb}
     \x{2019}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
   
 /^\p{Pi}/utf
     \x{ab}
     \x{2018}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
   
 /^\p{Po}/utf
     !
     \x{37e}
-    ** Failers
+\= Expect no match
     X
     \x{203f}
   
@@ -996,7 +978,7 @@
     \x{f3c}
     \x{2308}
     \x{230a}
-    ** Failers
+\= Expect no match
     X
     )
     ]
@@ -1006,38 +988,38 @@
 /^\p{Sc}+/utf
     $\x{a2}\x{a3}\x{a4}\x{a5}\x{a6}
     \x{9f2}
-    ** Failers
+\= Expect no match
     X
     \x{2c2}
   
 /^\p{Sk}/utf
     \x{2c2}
-    ** Failers
+\= Expect no match
     X
     \x{9f2}
   
 /^\p{Sm}+/utf
     +<|~\x{ac}\x{2044}
-    ** Failers
+\= Expect no match
     X
     \x{9f2}
   
 /^\p{So}/utf
     \x{a6}
     \x{482}
-    ** Failers
+\= Expect no match
     X
     \x{9f2}
   
 /^\p{Zl}/utf
     \x{2028}
-    ** Failers
+\= Expect no match
     X
     \x{2029}
   
 /^\p{Zp}/utf
     \x{2029}
-    ** Failers
+\= Expect no match
     X
     \x{2028}
   
@@ -1047,7 +1029,7 @@
     \x{1680}
     \x{2000}
     \x{2001}
-    ** Failers
+\= Expect no match
     \x{2028}
     \x{200d}
   
@@ -1091,31 +1073,31 @@
       \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}*+(....)/utf
-      ** Failers
+\= Expect no match
       \x{660}\x{661}\x{662}ABC
   
 /\p{Lu}/i,utf
     A
     a\x{10a0}B
-    ** Failers
+\= Expect no match
     a
     \x{1d00}
 
 /\p{^Lu}/i,utf
     1234
-    ** Failers
+\= Expect no match
     ABC
 
 /\P{Lu}/i,utf
     1234
-    ** Failers
+\= Expect no match
     ABC
 
 /(?<=A\p{Nd})XYZ/utf
     A2XYZ
     123A5XYZPQR
     ABA\x{660}XYZpqr
-    ** Failers
+\= Expect no match
     AXYZ
     XYZ
     
@@ -1123,7 +1105,7 @@
     1XYZ
     AB=XYZ..
     XYZ
-    ** Failers
+\= Expect no match
     WXYZ
 
 /[\p{Nd}]/utf
@@ -1133,33 +1115,38 @@
     1234
     12-34
     12+\x{661}-34
-    ** Failers
+\= Expect no match
     abcd
 
 /[\P{Nd}]+/utf
     abcd
-    ** Failers
+\= Expect no match
     1234
 
 /\D+/utf,no_auto_possess
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
      
 /\P{Nd}+/utf,no_auto_possess
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
 
 /[\D]+/utf,no_auto_possess
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
 
 /[\P{Nd}]+/utf,no_auto_possess
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
 
 /[\D\P{Nd}]+/utf,no_auto_possess
-    11111111111111111111111111111111111111111111111111111111111111111111111
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
 
 /\pL/utf
     a
@@ -1172,25 +1159,25 @@
 /\p{Lu}/utf
     A
     aZ
-    ** Failers
+\= Expect no match
     abc
 
 /\p{Lu}/i,utf
     A
     aZ
-    ** Failers
+\= Expect no match
     abc
 
 /\p{Ll}/utf
     a
     Az
-    ** Failers
+\= Expect no match
     ABC
 
 /\p{Ll}/i,utf
     a
     Az
-    ** Failers
+\= Expect no match
     ABC
 
 /^\x{c0}$/i,utf
@@ -1203,7 +1190,7 @@
 
 /A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
-    ** Failers
+\= Expect no match
     a\x{391}\x{10427}\x{ff3a}\x{1fb0}
     A\x{3b1}\x{10427}\x{ff3a}\x{1fb0}
     A\x{391}\x{1044F}\x{ff3a}\x{1fb0}
@@ -1241,7 +1228,7 @@
     \x{104}
     \x{105}
     \x{109}
-    ** Failers
+\= Expect no match
     \x{100}
     \x{10a}
     
@@ -1255,7 +1242,7 @@
     \x{ff}
     \x{100}
     \x{101}
-    ** Failers
+\= Expect no match
     \x{102}
     Y
     y
@@ -1266,7 +1253,6 @@
     A
     A\x{300}BC
     A\x{300}\x{301}\x{302}BC
-    *** Failers
     \x{300}
 
 /^(\X*)C/utf
@@ -1286,7 +1272,7 @@
     A\x{300}\x{301}\x{302}BCA\x{300}\x{301}C
 
 /^\X(.)/utf
-    *** Failers
+\= Expect no match
     A\x{300}\x{301}\x{302}
 
 /^\X{2,3}(.)/utf
@@ -1304,7 +1290,7 @@
 /^\pN{2,3}X/
     12X
     123X
-    *** Failers
+\= Expect no match
     X
     1X
     1234X
@@ -1315,46 +1301,46 @@
     
 /^\p{Han}+/utf
     \x{2e81}\x{3007}\x{2f804}\x{31a0}
-    ** Failers
+\= Expect no match
     \x{2e7f}
 
 /^\P{Katakana}+/utf
     \x{3105}
-    ** Failers
+\= Expect no match
     \x{30ff}
 
 /^[\p{Arabic}]/utf
     \x{06e9}
     \x{060b}
-    ** Failers
+\= Expect no match
     X\x{06e9}
 
 /^[\P{Yi}]/utf
     \x{2f800}
-    ** Failers
+\= Expect no match
     \x{a014}
     \x{a4c6}
 
 /^\p{Any}X/utf
     AXYZ
     \x{1234}XYZ
-    ** Failers
+\= Expect no match
     X
     
 /^\P{Any}X/utf
-    ** Failers
+\= Expect no match
     AX
     
 /^\p{Any}?X/utf
     XYZ
     AXYZ
     \x{1234}XYZ
-    ** Failers
+\= Expect no match
     ABXYZ
 
 /^\P{Any}?X/utf
     XYZ
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     ABXYZ
@@ -1363,11 +1349,11 @@
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
-    ** Failers
+\= Expect no match
     XYZ
 
 /^\P{Any}+X/utf
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
@@ -1378,11 +1364,10 @@
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
-    ** Failers
 
 /^\P{Any}*X/utf
     XYZ
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
@@ -1390,23 +1375,23 @@
 /^[\p{Any}]X/utf
     AXYZ
     \x{1234}XYZ
-    ** Failers
+\= Expect no match
     X
     
 /^[\P{Any}]X/utf
-    ** Failers
+\= Expect no match
     AX
     
 /^[\p{Any}]?X/utf
     XYZ
     AXYZ
     \x{1234}XYZ
-    ** Failers
+\= Expect no match
     ABXYZ
 
 /^[\P{Any}]?X/utf
     XYZ
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     ABXYZ
@@ -1415,11 +1400,11 @@
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
-    ** Failers
+\= Expect no match
     XYZ
 
 /^[\P{Any}]+X/utf
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
@@ -1430,11 +1415,10 @@
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
-    ** Failers
 
 /^[\P{Any}]*X/utf
     XYZ
-    ** Failers
+\= Expect no match
     AXYZ
     \x{1234}XYZ
     A\x{1234}XYZ
@@ -1448,7 +1432,7 @@
     \x{1234}\n\r\x{3456}xyz
 
 /^\P{Any}{3,5}?/utf
-    ** Failers
+\= Expect no match
     abcdefgh
     \x{1234}\n\r\x{3456}xyz
 
@@ -1456,7 +1440,7 @@
      AXY
      aXY
      \x{1c5}XY
-     ** Failers
+\= Expect no match
      \x{1bb}XY
      \x{2b0}XY
      !XY
@@ -1465,7 +1449,7 @@
      AXY
      aXY
      \x{1c5}XY
-     ** Failers
+\= Expect no match
      \x{1bb}XY
      \x{2b0}XY
      !XY
@@ -1476,7 +1460,7 @@
      AbcdeXyz
      \x{1c5}AbXY
      abcDEXypqreXlmn
-     ** Failers
+\= Expect no match
      \x{1bb}XY
      \x{2b0}XY
      !XY
@@ -1487,7 +1471,7 @@
      AbcdeXyz
      \x{1c5}AbXY
      abcDEXypqreXlmn
-     ** Failers
+\= Expect no match
      \x{1bb}XY
      \x{2b0}XY
      !XY
@@ -1498,7 +1482,7 @@
      AbcdeXyz
      \x{1c5}AbXY
      abcDEXypqreXlmn
-     ** Failers
+\= Expect no match
      \x{1bb}XY
      \x{2b0}XY
      !XY
@@ -1509,7 +1493,7 @@
      AbcdeXyz
      \x{1c5}AbXY
      abcDEXypqreXlmn
-     ** Failers
+\= Expect no match
      \x{1bb}XY
      \x{2b0}XY
      !XY
@@ -1518,7 +1502,7 @@
      !XY
      \x{1bb}XY
      \x{2b0}XY
-     ** Failers
+\= Expect no match
      \x{1c5}XY
      AXY
 
@@ -1526,7 +1510,7 @@
      !XY
      \x{1bb}XY
      \x{2b0}XY
-     ** Failers
+\= Expect no match
      \x{1c5}XY
      AXY
 
@@ -1542,7 +1526,7 @@
 /[\x{c0}\x{116}]+/i,utf
     \x{c0}\x{e0}\x{116}\x{117}
 
-/Check property support in non-UTF-8 mode/
+# Check property support in non-UTF-8 mode
  
 /\p{L}{4}/
     123abcdefg
@@ -1557,7 +1541,7 @@
 
 /\x{a77d}\x{1d79}/utf
     \x{a77d}\x{1d79}
-    ** Failers
+\= Expect no match
     \x{1d79}\x{a77d}
 
 /^\p{Xan}/utf
@@ -1566,12 +1550,12 @@
     \x{6ca}
     \x{a6c}
     \x{10a7}
-    ** Failers
+\= Expect no match
     _ABC
 
 /^\p{Xan}+/utf
     ABCD1234\x{6ca}\x{a6c}\x{10a7}_
-    ** Failers
+\= Expect no match
     _ABC
 
 /^\p{Xan}*/utf
@@ -1586,17 +1570,17 @@
     \x{6ca}
     \x{a6c}
     \x{10a7}
-    ** Failers
+\= Expect no match
     _ABC
  
 /^[\p{Xan}]+/utf
     ABCD1234\x{6ca}\x{a6c}\x{10a7}_
-    ** Failers
+\= Expect no match
     _ABC
 
 /^>\p{Xsp}/utf
     >\x{1680}\x{2028}\x{0b}
-    ** Failers
+\= Expect no match
     \x{0b}
 
 /^>\p{Xsp}+/utf,no_auto_possess
@@ -1617,7 +1601,7 @@
 /^>\p{Xps}/utf
     >\x{1680}\x{2028}\x{0b}
     >\x{a0}
-    ** Failers
+\= Expect no match
     \x{0b}
 
 /^>\p{Xps}+/utf
@@ -1648,7 +1632,7 @@
     \x{a6c}
     \x{10a7}
     _ABC
-    ** Failers
+\= Expect no match
     []
 
 /^\p{Xwd}+/utf
@@ -1667,7 +1651,7 @@
     \x{a6c}
     \x{10a7}
     _ABC
-    ** Failers
+\= Expect no match
     []
  
 /^[\p{Xwd}]+/utf
@@ -1686,7 +1670,7 @@
 
 /\b...\B/utf
     abc_
-    ** Failers
+\= Expect no match
     \x{37e}abc\x{376}
     \x{37e}\x{376}\x{371}\x{393}\x{394}
     !\x{c0}++\x{c1}\x{c2}
@@ -1748,7 +1732,7 @@
     \x{1100}X
     \x{1100}\x{34e}X
     \x{1b04}\x{1b04}X
-    *These match up to the roman letters
+\= These match up to the roman letters
     \x{1111}\x{1111}L,L
     \x{1111}\x{1111}\x{1169}L,L,V
     \x{1111}\x{ae4c}L, LV
@@ -1759,7 +1743,7 @@
     \x{1111}\x{ad89}\x{11fe}L, LVT, T
     \x{1111}\x{ad89}\x{11fe}\x{11fe}L, LVT, T, T
     \x{ad89}\x{11fe}\x{11fe}LVT, T, T
-    *These match just the first codepoint (invalid sequence)
+\= These match just the first codepoint (invalid sequence)
     \x{1111}\x{11fe}L, T
     \x{ae4c}\x{1111}LV, L
     \x{ae4c}\x{ae4c}LV, LV
@@ -1775,18 +1759,18 @@
     \x{11fe}\x{1169}T, V
     \x{11fe}\x{ae4c}T, LV
     \x{11fe}\x{ad89}T, LVT
-    *Test extend and spacing mark
+\= Test extend and spacing mark
     \x{1111}\x{ae4c}\x{0711}L, LV, extend
     \x{1111}\x{ae4c}\x{1b04}L, LV, spacing mark
     \x{1111}\x{ae4c}\x{1b04}\x{0711}\x{1b04}L, LV, spacing mark, extend, spacing mark
-    *Test CR, LF, and control
+\= Test CR, LF, and control
     \x0d\x{0711}CR, extend
     \x0d\x{1b04}CR, spacingmark
     \x0a\x{0711}LF, extend
     \x0a\x{1b04}LF, spacingmark
     \x0b\x{0711}Control, extend
     \x09\x{1b04}Control, spacingmark
-    *There are no Prepend characters, so we can't test Prepend, CR
+\= There are no Prepend characters, so we can't test Prepend, CR
     
 /^(?>\X{2})X/utf,aftertext
     \x{1111}\x{ae4c}\x{1111}\x{ae4c}X
@@ -1840,7 +1824,6 @@
 /\x{212b}+/i,utf
     \x{00c5}\x{00e5}\x{212b}
 
-
 /\x{01c4}+/i,utf
     \x{01c4}\x{01c5}\x{01c6}
 
@@ -1850,7 +1833,6 @@
 /\x{01c6}+/i,utf
     \x{01c4}\x{01c5}\x{01c6}
 
-
 /\x{01c7}+/i,utf
     \x{01c7}\x{01c8}\x{01c9}
 
@@ -1870,7 +1852,6 @@
 /\x{01cc}+/i,utf
     \x{01ca}\x{01cb}\x{01cc}
 
-
 /\x{01f1}+/i,utf
     \x{01f1}\x{01f2}\x{01f3}
 
@@ -1880,7 +1861,6 @@
 /\x{01f3}+/i,utf
     \x{01f1}\x{01f2}\x{01f3}
 
-
 /\x{0345}+/i,utf
     \x{0345}\x{0399}\x{03b9}\x{1fbe}
 
@@ -1893,7 +1873,6 @@
 /\x{1fbe}+/i,utf
     \x{0345}\x{0399}\x{03b9}\x{1fbe}
 
-
 /\x{0392}+/i,utf
     \x{0392}\x{03b2}\x{03d0}
 
@@ -1913,7 +1892,6 @@
 /\x{03f5}+/i,utf
     \x{0395}\x{03b5}\x{03f5}
 
-
 /\x{0398}+/i,utf
     \x{0398}\x{03b8}\x{03d1}\x{03f4}
 
@@ -1925,7 +1903,6 @@
 
 /\x{03f4}+/i,utf
     \x{0398}\x{03b8}\x{03d1}\x{03f4}
-    
 
 /\x{039a}+/i,utf
     \x{039a}\x{03ba}\x{03f0}
@@ -1936,7 +1913,6 @@
 /\x{03f0}+/i,utf
     \x{039a}\x{03ba}\x{03f0}
     
-
 /\x{03a0}+/i,utf
     \x{03a0}\x{03c0}\x{03d6}
 
@@ -1946,7 +1922,6 @@
 /\x{03d6}+/i,utf
     \x{03a0}\x{03c0}\x{03d6}
 
-
 /\x{03a1}+/i,utf
     \x{03a1}\x{03c1}\x{03f1}
 
@@ -1956,7 +1931,6 @@
 /\x{03f1}+/i,utf
     \x{03a1}\x{03c1}\x{03f1}
 
-
 /\x{03a3}+/i,utf
     \x{03A3}\x{03C2}\x{03C3}
 
@@ -1965,7 +1939,6 @@
 
 /\x{03c3}+/i,utf
     \x{03A3}\x{03C2}\x{03C3}
-    
 
 /\x{03a6}+/i,utf
     \x{03a6}\x{03c6}\x{03d5}
@@ -1976,7 +1949,6 @@
 /\x{03d5}+/i,utf
     \x{03a6}\x{03c6}\x{03d5}
 
-
 /\x{03c9}+/i,utf
     \x{03c9}\x{03a9}\x{2126}
 
@@ -1986,7 +1958,6 @@
 /\x{2126}+/i,utf
     \x{03c9}\x{03a9}\x{2126}
     
-
 /\x{1e60}+/i,utf
     \x{1e60}\x{1e61}\x{1e9b}
 
@@ -1996,14 +1967,12 @@
 /\x{1e9b}+/i,utf
     \x{1e60}\x{1e61}\x{1e9b}
     
-
 /\x{1e9e}+/i,utf
     \x{1e9e}\x{00df}
 
 /\x{00df}+/i,utf
     \x{1e9e}\x{00df}
     
-
 /\x{1f88}+/i,utf
     \x{1f88}\x{1f80}
 
@@ -2019,7 +1988,6 @@
 /\x{212a}+/i,utf
     \x{004b}\x{006b}\x{212a}
 
-
 /\x{0053}+/i,utf
     \x{0053}\x{0073}\x{017f}
 
@@ -2030,19 +1998,24 @@
     \x{0053}\x{0073}\x{017f}
 
 /ist/i,utf
+\= Expect no match
     ikt
 
 /is+t/i,utf
     iSs\x{17f}t
+\= Expect no match
     ikt
 
 /is+?t/i,utf
+\= Expect no match
     ikt
 
 /is?t/i,utf
+\= Expect no match
     ikt
 
 /is{2}t/i,utf
+\= Expect no match
     iskt
 
 /^\p{Xuc}/utf
@@ -2050,52 +2023,52 @@
     @abc
     `abc
     \x{1234}abc
-    ** Failers
+\= Expect no match
     abc
 
 /^\p{Xuc}+/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}+?/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}+?\*/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}++/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}{3,5}/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\p{Xuc}{3,5}?/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^[\p{Xuc}]/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^[\p{Xuc}]+/utf
     $@`\x{a0}\x{1234}\x{e000}**
-    ** Failers
+\= Expect no match
     \x{9f}
 
 /^\P{Xuc}/utf
     abc
-    ** Failers
+\= Expect no match
     $abc
     @abc
     `abc
@@ -2103,7 +2076,7 @@
 
 /^[\P{Xuc}]/utf
     abc
-    ** Failers
+\= Expect no match
     $abc
     @abc
     `abc
diff --git a/testdata/testinput8 b/testdata/testinput8
index 545e751..ca3b1b9 100644
--- a/testdata/testinput8
+++ b/testdata/testinput8
@@ -1,8 +1,11 @@
-# These are a few representative patterns whose lengths and offsets are to be
-# shown when the link size is 2. This is just a doublecheck test to ensure the
-# sizes don't go horribly wrong when something is changed. The pattern contents
-# are all themselves checked in other tests. Unicode, including property
-# support, is required for these tests.
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
 
 #pattern fullbincode,memory
 
@@ -67,7 +70,7 @@
 /\xff/utf
 
 /\x{0041}\x{2262}\x{0391}\x{002e}/I,utf
-    
+
 /\x{D55c}\x{ad6d}\x{C5B4}/I,utf
 
 /\x{65e5}\x{672c}\x{8a9e}/I,utf
@@ -150,10 +153,33 @@
 
 # Check the absolute limit on nesting (?| etc. This varies with code unit
 # width because the workspace is a different number of bytes. It will fail
-# in 8-bit and 16-bit but not in 32-bit.
-    
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
 /(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
 )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
 /parens_nest_limit=1000,-fullbincode
 
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+
+/(?(1)(?1)){8,}+()/debug
+    abcd
+
+/(?(1)|a(?1)b){2,}+()/debug
+    abcde
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+
 # End of testinput8
diff --git a/testdata/testinput9 b/testdata/testinput9
index eeb5edb..9a26f5f 100644
--- a/testdata/testinput9
+++ b/testdata/testinput9
@@ -2,11 +2,10 @@
 # UTF-8 or Unicode property support. */
     
 #forbid_utf
+#newline_default lf any anycrlf
 
-/a\Cb/
-    aXb
-    a\nb
-    ** Failers (too big char)
+/ab/
+\= Expect error message (too big char) and no match
     A\x{123}B
     A\o{443}B
   
@@ -240,9 +239,15 @@
 /(*:0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF)XX/mark
     XX
      
+/(*:0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF)XX/mark,alt_verbnames
+    XX
+     
 /(*:0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDE)XX/mark
     XX
 
+/(*:0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDE)XX/mark,alt_verbnames
+    XX
+
 /\u0100/alt_bsux,allow_empty_class,match_unset_backref,dupnames
 
 /[\u0100-\u0200]/alt_bsux,allow_empty_class,match_unset_backref,dupnames
@@ -251,4 +256,6 @@
 
 /[^\s]*\s* [^\W]+\W+ [^\d]*?\d0 [^\d\w]{4,6}?\w*A/B
 
+/(*MARK:a\x{100}b)z/alt_verbnames 
+
 # End of testinput9
diff --git a/testdata/testoutput1 b/testdata/testoutput1
index 942dc7d..d28bf91 100644
--- a/testdata/testoutput1
+++ b/testdata/testoutput1
@@ -3,15 +3,17 @@
 # 32-bit PCRE libraries, and also using the perltest.pl script.
     
 #forbid_utf
+#newline_default lf any anycrlf
 #perltest
 
 /the quick brown fox/
     the quick brown fox
  0: the quick brown fox
-    The quick brown FOX
-No match
     What do you know about the quick brown fox?
  0: the quick brown fox
+\= Expect no match
+    The quick brown FOX
+No match
     What do you know about THE QUICK BROWN FOX?
 No match
 
@@ -90,8 +92,7 @@ No match
  0: aaaabxyzpqrrrabbxyyyypqAzz
     >>>>abcxyzpqrrrabbxyyyypqAzz
  0: abcxyzpqrrrabbxyyyypqAzz
-    *** Failers
-No match
+\= Expect no match
     abxyzpqrrabbxyyyypqAzz
 No match
     abxyzpqrrrrabbxyyyypqAzz
@@ -112,8 +113,7 @@ No match
     abcabczz
  0: abcabczz
  1: abc
-    *** Failers
-No match
+\= Expect no match
     zz
 No match
     abcabcabczz
@@ -146,8 +146,7 @@ No match
     bbbbbbbbbbbac
  0: bbbbbbbbbbbac
  1: a
-    *** Failers
-No match
+\= Expect no match
     aaac
 No match
     abbbbbbbbbbbac
@@ -178,8 +177,7 @@ No match
     bbbbbbbbbbbac
  0: bbbbbbbbbbbac
  1: a
-    *** Failers
-No match
+\= Expect no match
     aaac
 No match
     abbbbbbbbbbbac
@@ -200,8 +198,7 @@ No match
     bababc
  0: bababc
  1: ba
-    *** Failers
-No match
+\= Expect no match
     bababbc
 No match
     babababc
@@ -217,8 +214,7 @@ No match
     bababc
  0: bababc
  1: ba
-    *** Failers
-No match
+\= Expect no match
     bababbc
 No match
     babababc
@@ -241,8 +237,7 @@ No match
  0: d
     ething
  0: e
-    *** Failers
-No match
+\= Expect no match
     fthing
 No match
     [thing
@@ -259,8 +254,7 @@ No match
  0: d
     ething
  0: e
-    *** Failers
-No match
+\= Expect no match
     athing
 No match
     fthing
@@ -273,8 +267,7 @@ No match
  0: [
     \\thing
  0: \
-    *** Failers
- 0: *
+\= Expect no match
     athing
 No match
     bthing
@@ -293,8 +286,7 @@ No match
  0: a
     fthing
  0: f
-    *** Failers
- 0: *
+\= Expect no match
     ]thing
 No match
     cthing
@@ -337,8 +329,7 @@ No match
  0: 10
     100
  0: 100
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
 
@@ -355,46 +346,42 @@ No match
  0: xxx0
     xxx1234
  0: xxx1234
-    *** Failers
-No match
+\= Expect no match
     xxx
 No match
 
 /^.+[0-9][0-9][0-9]$/
     x123
  0: x123
+    x1234
+ 0: x1234
     xx123
  0: xx123
     123456
  0: 123456
-    *** Failers
-No match
+\= Expect no match
     123
 No match
-    x1234
- 0: x1234
 
 /^.+?[0-9][0-9][0-9]$/
     x123
  0: x123
+    x1234
+ 0: x1234
     xx123
  0: xx123
     123456
  0: 123456
-    *** Failers
-No match
+\= Expect no match
     123
 No match
-    x1234
- 0: x1234
 
 /^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/
     abc!pqr=apquxz.ixr.zzz.ac.uk
  0: abc!pqr=apquxz.ixr.zzz.ac.uk
  1: abc
  2: pqr
-    *** Failers
-No match
+\= Expect no match
     !pqr=apquxz.ixr.zzz.ac.uk
 No match
     abc!=apquxz.ixr.zzz.ac.uk
@@ -407,7 +394,8 @@ No match
 /:/
     Well, we need a colon: somewhere
  0: :
-    *** Fail if we don't
+\= Expect no match
+    Fail without a colon
 No match
 
 /([\da-f:]+)$/i
@@ -435,8 +423,7 @@ No match
     Any old stuff
  0: ff
  1: ff
-    *** Failers
-No match
+\= Expect no match
     0zzz
 No match
     gzzz
@@ -457,8 +444,7 @@ No match
  1: 12
  2: 123
  3: 0
-    *** Failers
-No match
+\= Expect no match
     .1.2.3333
 No match
     1.2.3
@@ -477,8 +463,7 @@ No match
  1: 1
  2: non-sp1
  3: non-sp2
-    *** Failers
-No match
+\= Expect no match
     1IN SOA non-sp1 non-sp2(
 No match
 
@@ -498,8 +483,7 @@ No match
     x-.y-.
  0: x-.y-.
  1: .y-
-    *** Failers
-No match
+\= Expect no match
     -abc.peq.
 No match
 
@@ -518,8 +502,7 @@ No match
  1: -a
  2: .b-c
  3: -c
-    *** Failers
-No match
+\= Expect no match
     *.0
 No match
     *.a-
@@ -570,22 +553,21 @@ No match
     \"\" ; rhubarb
  0: "" ; rhubarb
  1: ; rhubarb
-    *** Failers
-No match
+\= Expect no match
     \"1234\" : things
 No match
 
 /^$/
     \
  0: 
-    *** Failers
+\= Expect no match
+    A non-empty line
 No match
 
 /   ^    a   (?# begins with a)  b\sc (?# then b c) $ (?# then end)/x
     ab c
  0: ab c
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
     ab cde
@@ -594,8 +576,7 @@ No match
 /(?x)   ^    a   (?# begins with a)  b\sc (?# then b c) $ (?# then end)/
     ab c
  0: ab c
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
     ab cde
@@ -606,8 +587,7 @@ No match
  0: a bcd
     a b d
  0: a b d
-    *** Failers
-No match
+\= Expect no match
     abcd
 No match
     ab d
@@ -716,8 +696,7 @@ No match
  0: 12345678ab
     12345678__
  0: 12345678__
-    *** Failers
-No match
+\= Expect no match
     1234567
 No match
 
@@ -730,8 +709,7 @@ No match
  0: 12345
     aaaaa
  0: aaaaa
-    *** Failers
-No match
+\= Expect no match
     123456
 No match
 
@@ -756,8 +734,7 @@ No match
  0: def=defdefdef
  1: def
  2: def
-    *** Failers
-No match
+\= Expect no match
     abc=defdef
 No match
 
@@ -827,8 +804,7 @@ No match
     From abcd  Mon Sep  1 12:33:02 1997
  0: From abcd  Mon Sep  1 12:33
  1: Sep  
-    *** Failers
-No match
+\= Expect no match
     From abcd  Sep 01 12:33:02 1997
 No match
 
@@ -865,8 +841,7 @@ No match
     abc456
  0: abc
  1: abc
-    *** Failers
-No match
+\= Expect no match
     abc123
 No match
 
@@ -910,16 +885,14 @@ No match
 /(?!^)abc/
     the abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
 
 /(?=^)abc/
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     the abc
 No match
 
@@ -1151,8 +1124,7 @@ No match
  0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay
     A missing angle <user\@some.where
  0: user@some.where
-    *** Failers
-No match
+\= Expect no match
     The quick brown fox
 No match
 
@@ -1752,8 +1724,7 @@ No match
  0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay
     A missing angle <user\@some.where
  0: user@some.where
-    *** Failers
-No match
+\= Expect no match
     The quick brown fox
 No match
 
@@ -1786,8 +1757,7 @@ No match
  0: A\x00\x00Z
     An A\0\x0\0Z
  0: A\x00\x00\x00Z
-    *** Failers
-No match
+\= Expect no match
     A\0Z
 No match
     A\0\x0\0\x0Z
@@ -1802,8 +1772,7 @@ No match
  0: bell
  1: 
  2: bell
-    *** Failers
-No match
+\= Expect no match
     cowbell
 No match
 
@@ -1818,8 +1787,7 @@ No match
  0: \x0d
     \tabc
  0: \x09
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
 
@@ -1838,8 +1806,7 @@ No match
     b
  0: b
  1: 
-    *** Failers
-No match
+\= Expect no match
     acb
 No match
 
@@ -1853,8 +1820,7 @@ No match
     b
  0: b
  1: 
-    *** Failers
-No match
+\= Expect no match
     ab
 No match
 
@@ -1868,8 +1834,7 @@ No match
     b
  0: b
  1: 
-    *** Failers
-No match
+\= Expect no match
     acb
 No match
 
@@ -1880,8 +1845,7 @@ No match
     b
  0: b
  1: 
-    *** Failers
-No match
+\= Expect no match
     ab
 No match
     aab
@@ -1899,8 +1863,7 @@ No match
     b
  0: b
  1: 
-    *** Failers
-No match
+\= Expect no match
     ab
 No match
     aab
@@ -1915,8 +1878,7 @@ No match
  0: abbbc
     abbc
  0: abbc
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
     abbbbbc
@@ -1946,8 +1908,7 @@ No match
 /^[W-c]+$/
     WXY_^abc
  0: WXY_^abc
-    *** Failers
-No match
+\= Expect no match
     wxy
 No match
 
@@ -1976,8 +1937,7 @@ No match
 /^abc$/
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     qqq\nabc
 No match
     abc\nzzz
@@ -1990,8 +1950,7 @@ No match
  0: abc
     abc\n 
  0: abc
-    *** Failers
-No match
+\= Expect no match
     qqq\nabc
 No match
     abc\nzzz
@@ -2005,9 +1964,7 @@ No match
  1: f
 
 /\A(.)*\Z/m
-    *** Failers
- 0: *** Failers
- 1: s
+\= Expect no match
     abc\ndef
 No match
 
@@ -2020,24 +1977,21 @@ No match
 /[-az]+/
     az-
  0: az-
-    *** Failers
- 0: a
+\= Expect no match
     b
 No match
 
 /[az-]+/
     za-
  0: za-
-    *** Failers
- 0: a
+\= Expect no match
     b
 No match
 
 /[a\-z]+/
     a-z
  0: a-z
-    *** Failers
- 0: a
+\= Expect no match
     b
 No match
 
@@ -2048,16 +2002,14 @@ No match
 /[\d-]+/
     12-34
  0: 12-34
-    *** Failers
-No match
+\= Expect no match
     aaa
 No match
 
 /[\d-z]+/
     12-34z
  0: 12-34z
-    *** Failers
-No match
+\= Expect no match
     aaa
 No match
 
@@ -2068,8 +2020,7 @@ No match
 /\x20Z/
     the Zoo
  0:  Z
-    *** Failers
-No match
+\= Expect no match
     Zulu
 No match
 
@@ -2084,29 +2035,12 @@ No match
  0: abcABC
  1: abc
 
-/ab{3cd/
-    ab{3cd
- 0: ab{3cd
-
-/ab{3,cd/
-    ab{3,cd
- 0: ab{3,cd
-
-/ab{3,4a}cd/
-    ab{3,4a}cd
- 0: ab{3,4a}cd
-
-/{4,5a}bc/
-    {4,5a}bc
- 0: {4,5a}bc
-
 /abc$/
     abc
  0: abc
     abc\n
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abc\ndef
 No match
 
@@ -2169,8 +2103,7 @@ No match
 /^[A\8B\9C]+$/
     A8B9C
  0: A8B9C
-    *** Failers 
-No match
+\= Expect no match 
     A8B9C\x00
 No match
 
@@ -2255,12 +2188,7 @@ No match
  2: a
  3: 
  4: ccc
-    *** Failers
- 0: *** Failers
- 1: *
- 2: *
- 3: * Fail
- 4: ers
+\= Expect no match
     anything
 No match
     b\bc   
@@ -2291,8 +2219,7 @@ No match
 /[^k]$/
     abc
  0: c
-    *** Failers
- 0: s
+\= Expect no match
     abk   
 No match
    
@@ -2303,8 +2230,7 @@ No match
  0: bc
     kabc 
  0: abc
-    *** Failers
- 0: ers
+\= Expect no match
     abk
 No match
     akb
@@ -2317,8 +2243,7 @@ No match
  0: 12345678@a.b.c.d
     123456789\@x.y.z
  0: 123456789@x.y.z
-    *** Failers
-No match
+\= Expect no match
     12345678\@x.y.uk
 No match
     1234567\@a.b.c.d       
@@ -2331,8 +2256,7 @@ No match
     aaaaaaaaaa
  0: aaaaaaaaaa
  1: a
-    *** Failers
-No match
+\= Expect no match
     aaaaaaa   
 No match
 
@@ -2392,8 +2316,7 @@ No match
  0: .875
  1: .875
  2: 5
-    *** Failers 
-No match
+\= Expect no match 
     1.235 
 No match
     
@@ -2473,8 +2396,7 @@ No match
     ABC445
  0: ABC
  1: ABC
-    *** Failers
-No match
+\= Expect no match
     ABC123
 No match
     
@@ -2483,8 +2405,7 @@ No match
  0: W46]
     -46]789
  0: -46]
-    *** Failers
-No match
+\= Expect no match
     Wall
 No match
     Zebra
@@ -2513,8 +2434,7 @@ No match
  0: ]
     \\backslash 
  0: \
-    *** Failers
-No match
+\= Expect no match
     -46]789
 No match
     well
@@ -2525,13 +2445,15 @@ No match
  0: 01/01/2000
 
 /word (?:[a-zA-Z0-9]+ ){0,10}otherword/
-  word cat dog elephant mussel cow horse canary baboon snake shark otherword
+    word cat dog elephant mussel cow horse canary baboon snake shark otherword
  0: word cat dog elephant mussel cow horse canary baboon snake shark otherword
-  word cat dog elephant mussel cow horse canary baboon snake shark
+\= Expect no match
+    word cat dog elephant mussel cow horse canary baboon snake shark
 No match
 
 /word (?:[a-zA-Z0-9]+ ){0,300}otherword/
-  word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
+\= Expect no match
+    word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
 No match
 
 /^(a){0,0}/
@@ -2592,28 +2514,28 @@ No match
  1: a
 
 /^(a){1,1}/
-    bcd
-No match
     abc
  0: a
  1: a
     aab  
  0: a
  1: a
-
-/^(a){1,2}/
+\= Expect no match
     bcd
 No match
+
+/^(a){1,2}/
     abc
  0: a
  1: a
     aab  
  0: aa
  1: a
-
-/^(a){1,3}/
+\= Expect no match
     bcd
 No match
+
+/^(a){1,3}/
     abc
  0: a
  1: a
@@ -2623,10 +2545,11 @@ No match
     aaa   
  0: aaa
  1: a
-
-/^(a){1,}/
+\= Expect no match
     bcd
 No match
+
+/^(a){1,}/
     abc
  0: a
  1: a
@@ -2639,6 +2562,9 @@ No match
     aaaaaaaa    
  0: aaaaaaaa
  1: a
+\= Expect no match
+    bcd
+No match
 
 /.*\.gif/
     borfle\nbib.gif\nno
@@ -2699,8 +2625,7 @@ No match
     BarFoo 
  0: B
  1: B
-    *** Failers
-No match
+\= Expect no match
     abcde\nBar  
 No match
 
@@ -2722,8 +2647,7 @@ No match
     BarFoo 
  0: B
  1: B
-    *** Failers
-No match
+\= Expect no match
     abcde\nBar  
 No match
 
@@ -2745,8 +2669,7 @@ No match
     BarFoo 
  0: B
  1: B
-    *** Failers 
-No match
+\= Expect no match 
     abcde\nBar  
 No match
 
@@ -2755,14 +2678,12 @@ No match
  0: abcde\x0a1234X
     BarFoo 
  0: B
-    *** Failers 
-No match
+\= Expect no match 
     abcde\nBar  
 No match
 
 /^.*B/
-    **** Failers
-No match
+\= Expect no match
     abc\nB
 No match
      
@@ -2814,32 +2735,28 @@ No match
 /^[abcdefghijklmnopqrstuvwxy0123456789]/
     n
  0: n
-    *** Failers 
-No match
+\= Expect no match 
     z 
 No match
 
 /abcde{0,0}/
     abcd
  0: abcd
-    *** Failers
-No match
+\= Expect no match
     abce  
 No match
 
 /ab[cd]{0,0}e/
     abe
  0: abe
-    *** Failers
-No match
+\= Expect no match
     abcde 
 No match
     
 /ab(c){0,0}d/
     abd
  0: abd
-    *** Failers
-No match
+\= Expect no match
     abcd   
 No match
 
@@ -2853,17 +2770,14 @@ No match
     abbbb
  0: abbbb
  1: bbbb
-    *** Failers
- 0: a
- 1: 
+\= Expect no match
     bbbbb    
 No match
     
 /ab\d{0}e/
     abe
  0: abe
-    *** Failers
-No match
+\= Expect no match
     ab1e   
 No match
     
@@ -2937,8 +2851,7 @@ No match
 /a.b/
     acb
  0: acb
-    *** Failers 
-No match
+\= Expect no match 
     a\nb   
 No match
     
@@ -2989,15 +2902,14 @@ No match
  1: a
     
 /(?!\A)x/m
+    a\bx\n
+ 0: x
+    a\nx\n
+ 0: x
+\= Expect no match     
     x\nb\n
 No match
-    a\bx\n  
- 0: x
     
-/\x0{ab}/
-    \0{ab} 
- 0: \x00{ab}
-
 /(A|B)*?CD/
     CD 
  0: CD
@@ -3025,8 +2937,7 @@ No match
  0: foo
     rfoosh
  0: foo
-    *** Failers
-No match
+\= Expect no match
     barfoo
 No match
     towbarfoo
@@ -3035,8 +2946,7 @@ No match
 /\w{3}(?<!bar)foo/
     catfood
  0: catfoo
-    *** Failers
-No match
+\= Expect no match
     foo
 No match
     barfoo
@@ -3048,8 +2958,7 @@ No match
     fooabar
  0: bar
  1: foo
-    *** Failers
-No match
+\= Expect no match
     bar
 No match
     foobbar
@@ -3058,8 +2967,7 @@ No match
 /\Aabc\z/m
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abc\n   
 No match
     qqq\nabc
@@ -3070,12 +2978,11 @@ No match
 No match
 
 "(?>.*/)foo"
-    /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/
-No match
-
-"(?>.*/)foo"
     /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo
  0: /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo
+\= Expect no match     
+    /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/
+No match
 
 /(?>(\.\d\d[1-9]?))\d+/
     1.230003938
@@ -3084,8 +2991,7 @@ No match
     1.875000282
  0: .875000282
  1: .875
-    *** Failers 
-No match
+\= Expect no match 
     1.235 
 No match
 
@@ -3093,8 +2999,7 @@ No match
     now is the time for all good men to come to the aid of the party
  0: now is the time for all good men to come to the aid of the party
  1: party
-    *** Failers
-No match
+\= Expect no match
     this is not a line with only words and spaces!
 No match
     
@@ -3113,8 +3018,7 @@ No match
  0: 12345a
  1: 12345
  2: a
-    *** Failers
-No match
+\= Expect no match
     12345+ 
 No match
 
@@ -3152,8 +3056,7 @@ No match
     (abc(def)xyz)
  0: (abc(def)xyz)
  1: xyz
-    *** Failers
-No match
+\= Expect no match
     ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa   
 No match
 
@@ -3162,8 +3065,7 @@ No match
  0: ab
     Ab
  0: Ab
-    *** Failers 
-No match
+\= Expect no match 
     aB
 No match
     AB
@@ -3173,8 +3075,7 @@ No match
     a bcd e
  0: a bcd e
  1: a bc
-    *** Failers
-No match
+\= Expect no match
     a b cd e
 No match
     abcd e   
@@ -3186,8 +3087,7 @@ No match
     a bcde f
  0: a bcde f
  1: a bcde f
-    *** Failers
-No match
+\= Expect no match
     abcdef  
 No match
 
@@ -3198,8 +3098,7 @@ No match
     aBc
  0: aBc
  1: aB
-    *** Failers
-No match
+\= Expect no match
     abC
 No match
     aBC  
@@ -3218,8 +3117,7 @@ No match
  0: abc
     aBc
  0: aBc
-    *** Failers 
-No match
+\= Expect no match 
     ABC
 No match
     abC
@@ -3232,8 +3130,7 @@ No match
  0: aBc
     aBBc
  0: aBBc
-    *** Failers 
-No match
+\= Expect no match 
     aBC
 No match
     aBBC
@@ -3244,8 +3141,7 @@ No match
  0: abcd
     abCd
  0: abCd
-    *** Failers
-No match
+\= Expect no match
     aBCd
 No match
     abcD     
@@ -3258,8 +3154,7 @@ No match
  0: more than MILLION
     more \n than Million 
  0: more \x0a than Million
-    *** Failers
-No match
+\= Expect no match
     MORE THAN MILLION    
 No match
     more \n than \n million 
@@ -3272,8 +3167,7 @@ No match
  0: more than MILLION
     more \n than Million 
  0: more \x0a than Million
-    *** Failers
-No match
+\= Expect no match
     MORE THAN MILLION    
 No match
     more \n than \n million 
@@ -3286,8 +3180,7 @@ No match
  0: aBbc
     aBBc 
  0: aBBc
-    *** Failers
-No match
+\= Expect no match
     Abc
 No match
     abAb    
@@ -3300,8 +3193,7 @@ No match
  0: abc
     aBc
  0: aBc
-    *** Failers
-No match
+\= Expect no match
     Ab 
 No match
     abC
@@ -3316,8 +3208,7 @@ No match
     aBxxc
  0: xxc
  1: xx
-    *** Failers
-No match
+\= Expect no match
     Abxxc
 No match
     ABxxc
@@ -3331,8 +3222,7 @@ No match
  1: a
     bB
  0: bB
-    *** Failers
-No match
+\= Expect no match
     aB
 No match
     bA    
@@ -3346,8 +3236,7 @@ No match
  0: b
     bb  
  0: bb
-    *** Failers
-No match
+\= Expect no match
     ab   
 No match
     
@@ -3361,8 +3250,7 @@ No match
  0: 12
     123
  0: 12
-    *** Failers
-No match
+\= Expect no match
     xyz    
 No match
 
@@ -3371,8 +3259,7 @@ No match
  0: abc:
     12
  0: 12
-    *** Failers
-No match
+\= Expect no match
     123
 No match
     xyz    
@@ -3387,8 +3274,7 @@ No match
  0: cat
     focat   
  0: cat
-    *** Failers
-No match
+\= Expect no match
     foocat  
 No match
 
@@ -3401,8 +3287,7 @@ No match
  0: cat
     focat   
  0: cat
-    *** Failers
-No match
+\= Expect no match
     foocat  
 No match
 
@@ -3441,8 +3326,7 @@ No match
  0: 12aa
  1: 1
  2: 2
-    *** Failers
-No match
+\= Expect no match
     1234    
 No match
 
@@ -3459,8 +3343,7 @@ No match
     blaH blaH
  0: blaH blaH
  1: blaH
-    *** Failers
-No match
+\= Expect no match
     blah BLAH
 No match
     Blah blah      
@@ -3628,8 +3511,7 @@ No match
  0: 12-sep-98
     12-09-98
  0: 12-09-98
-    *** Failers
-No match
+\= Expect no match
     sep-12-98
 No match
         
@@ -3640,8 +3522,7 @@ No match
     foobarfootling 
  0: barfoo
  1: foo
-    *** Failers
-No match
+\= Expect no match
     foobar
 No match
     barfoo   
@@ -3676,8 +3557,7 @@ No match
     BBx
  0: BBx
  1: BB
-    *** Failers
-No match
+\= Expect no match
     abcX
 No match
     aBCX
@@ -3709,8 +3589,7 @@ No match
     France
  0: F
  1: F
-    *** Failers
-No match
+\= Expect no match
     Africa     
 No match
 
@@ -3733,8 +3612,7 @@ No match
     Zambesi
  0: Z
  1: Z
-    *** Failers
-No match
+\= Expect no match
     aCD  
 No match
     XY  
@@ -3743,8 +3621,7 @@ No match
 /(?<=foo\n)^bar/m
     foo\nbar
  0: bar
-    *** Failers
-No match
+\= Expect no match
     bar
 No match
     baz\nbar   
@@ -3757,39 +3634,37 @@ No match
  0: baz
     koobarbaz 
  0: baz
-    *** Failers
-No match
+\= Expect no match
     baz
 No match
     foobarbaz 
 No match
 
-/The cases of aaaa and aaaaaa are missed out below because Perl does things/
-/differently. We know that odd, and maybe incorrect, things happen with/
-No match
-/recursive references in Perl, as far as 5.11.3 - see some stuff in test #2./
-No match
+# The cases of aaaa and aaaaaa are missed out below because Perl does things
+# differently. We know that odd, and maybe incorrect, things happen with
+# recursive references in Perl, as far as 5.11.3 - see some stuff in test #2.
 
 /^(a\1?){4}$/
-    a
-No match
-    aa
-No match
-    aaa
-No match
     aaaaa
  0: aaaaa
  1: a
     aaaaaaa
  0: aaaaaaa
  1: a
+    aaaaaaaaaa
+ 0: aaaaaaaaaa
+ 1: aaaa
+\= Expect no match
+    a
+No match
+    aa
+No match
+    aaa
+No match
     aaaaaaaa
 No match
     aaaaaaaaa
 No match
-    aaaaaaaaaa
- 0: aaaaaaaaaa
- 1: aaaa
     aaaaaaaaaaa
 No match
     aaaaaaaaaaaa
@@ -3800,16 +3675,10 @@ No match
 No match
     aaaaaaaaaaaaaaa
 No match
-    aaaaaaaaaaaaaaaa               
+    aaaaaaaaaaaaaaaa
 No match
 
 /^(a\1?)(a\1?)(a\2?)(a\3?)$/
-    a
-No match
-    aa
-No match
-    aaa
-No match
     aaaa
  0: aaaa
  1: a
@@ -3834,16 +3703,23 @@ No match
  2: aa
  3: aaa
  4: a
-    aaaaaaaa
-No match
-    aaaaaaaaa
-No match
     aaaaaaaaaa
  0: aaaaaaaaaa
  1: a
  2: aa
  3: aaa
  4: aaaa
+\= Expect no match
+    a
+No match
+    aa
+No match
+    aaa
+No match
+    aaaaaaaa
+No match
+    aaaaaaaaa
+No match
     aaaaaaaaaaa
 No match
     aaaaaaaaaaaa
@@ -3857,9 +3733,8 @@ No match
     aaaaaaaaaaaaaaaa               
 No match
 
-/The following tests are taken from the Perl 5.005 test suite; some of them/
-/are compatible with 5.004, but I'd rather not have to sort them out./
-No match
+# The following tests are taken from the Perl 5.005 test suite; some of them
+# are compatible with 5.004, but I'd rather not have to sort them out.
 
 /abc/
     abc
@@ -3868,8 +3743,7 @@ No match
  0: abc
     ababc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xbc
 No match
     axc
@@ -3904,8 +3778,7 @@ No match
 /ab+bc/
     abbc
  0: abbc
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
     abq
@@ -3930,8 +3803,7 @@ No match
  0: abbbbc
 
 /ab{4,5}bc/
-    *** Failers
-No match
+\= Expect no match
     abq
 No match
     abbbbc
@@ -3960,8 +3832,7 @@ No match
 /^abc$/
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abbbbc
 No match
     abcc
@@ -3976,10 +3847,7 @@ No match
 /abc$/
     aabc
  0: abc
-    *** Failers
-No match
-    aabc
- 0: abc
+\= Expect no match
     aabcd
 No match
 
@@ -4004,8 +3872,7 @@ No match
 /a[bc]d/
     abd
  0: abd
-    *** Failers
-No match
+\= Expect no match
     axyzd
 No match
     abc
@@ -4038,8 +3905,7 @@ No match
 /a[^bc]d/
     aed
  0: aed
-    *** Failers
-No match
+\= Expect no match
     abd
 No match
     abd
@@ -4052,10 +3918,9 @@ No match
 /a[^]b]c/
     adc
  0: adc
-    *** Failers
-No match
     a-c
  0: a-c
+\= Expect no match
     a]c
 No match
 
@@ -4068,8 +3933,7 @@ No match
  0: a
 
 /\by\b/
-    *** Failers
-No match
+\= Expect no match
     xy
 No match
     yz
@@ -4078,8 +3942,7 @@ No match
 No match
 
 /\Ba\B/
-    *** Failers
- 0: a
+\= Expect no match
     a-
 No match
     -a
@@ -4106,10 +3969,7 @@ No match
 /\W/
     -
  0: -
-    *** Failers
- 0: *
-    -
- 0: -
+\= Expect no match
     a
 No match
 
@@ -4120,10 +3980,7 @@ No match
 /a\Sb/
     a-b
  0: a-b
-    *** Failers
-No match
-    a-b
- 0: a-b
+\= Expect no match
     a b
 No match
 
@@ -4134,10 +3991,7 @@ No match
 /\D/
     -
  0: -
-    *** Failers
- 0: *
-    -
- 0: -
+\= Expect no match
     1
 No match
 
@@ -4148,10 +4002,7 @@ No match
 /[\W]/
     -
  0: -
-    *** Failers
- 0: *
-    -
- 0: -
+\= Expect no match
     a
 No match
 
@@ -4162,10 +4013,7 @@ No match
 /a[\S]b/
     a-b
  0: a-b
-    *** Failers
-No match
-    a-b
- 0: a-b
+\= Expect no match
     a b
 No match
 
@@ -4176,10 +4024,7 @@ No match
 /[\D]/
     -
  0: -
-    *** Failers
- 0: *
-    -
- 0: -
+\= Expect no match
     1
 No match
 
@@ -4269,14 +4114,13 @@ No match
  0: cde
 
 /abc/
-    *** Failers
-No match
+\= Expect no match
     b
 No match
-    
 
 /a*/
-    
+    \
+ 0: 
 
 /([abc])*d/
     abbbcd
@@ -4361,8 +4205,7 @@ No match
  0: adcdcde
 
 /a[bcd]+dcdcde/
-    *** Failers
-No match
+\= Expect no match
     abcde
 No match
     adcdcde
@@ -4400,8 +4243,7 @@ No match
     reffgz
  0: effgz
  1: effgz
-    *** Failers
-No match
+\= Expect no match
     effg
 No match
     bcdd
@@ -4449,8 +4291,7 @@ No match
  9: a
 
 /multiple words of text/
-    *** Failers
-No match
+\= Expect no match
     aa
 No match
     uh-uh
@@ -4501,12 +4342,10 @@ No match
     a
  0: a
  1: a
-    *** Failers
- 0: a
- 1: a
     ab
  0: a
  1: a
+\= Expect no match
     x
 No match
 
@@ -4543,8 +4382,7 @@ No match
  0: ABC
     ABABC
  0: ABC
-    *** Failers
-No match
+\= Expect no match
     aaxabxbaxbbx
 No match
     XBC
@@ -4577,8 +4415,7 @@ No match
  0: ABBC
 
 /ab+bc/i
-    *** Failers
-No match
+\= Expect no match
     ABC
 No match
     ABQ
@@ -4603,8 +4440,7 @@ No match
  0: ABBBBC
 
 /ab{4,5}?bc/i
-    *** Failers
-No match
+\= Expect no match
     ABQ
 No match
     ABBBBC
@@ -4633,8 +4469,7 @@ No match
 /^abc$/i
     ABC
  0: ABC
-    *** Failers
-No match
+\= Expect no match
     ABBBBC
 No match
     ABCC
@@ -4669,10 +4504,9 @@ No match
  0: AXYZC
 
 /a.*c/i
-    *** Failers
-No match
     AABC
  0: AABC
+\= Expect no match
     AXYZD
 No match
 
@@ -4683,8 +4517,7 @@ No match
 /a[b-d]e/i
     ACE
  0: ACE
-    *** Failers
-No match
+\= Expect no match
     ABC
 No match
     ABD
@@ -4717,8 +4550,7 @@ No match
 /a[^-b]c/i
     ADC
  0: ADC
-    *** Failers
-No match
+\= Expect no match
     ABD
 No match
     A-C
@@ -4740,8 +4572,7 @@ No match
  1: 
 
 /$b/i
-    *** Failers
-No match
+\= Expect no match
     A]C
 No match
     B
@@ -4833,11 +4664,6 @@ No match
     CDE
  0: CDE
 
-/abc/i
-
-/a*/i
-    
-
 /([abc])*d/i
     ABBBCD
  0: ABBBCD
@@ -4877,6 +4703,7 @@ No match
  0: HIJ
 
 /^(ab|cd)e/i
+\= Expect no match
     ABCDE
 No match
 
@@ -4956,8 +4783,7 @@ No match
     REFFGZ
  0: EFFGZ
  1: EFFGZ
-    *** Failers
-No match
+\= Expect no match
     ADCDCDE
 No match
     EFFG
@@ -5017,8 +4843,7 @@ No match
  1: C
 
 /multiple words of text/i
-    *** Failers
-No match
+\= Expect no match
     AA
 No match
     UH-UH
@@ -5176,8 +5001,7 @@ No match
     aaaaaaaaaa
  0: aaaaaaaaaa
  1: aaaa
-    *** Failers
-No match
+\= Expect no match
     AB
 No match
     aaaaaaaaa
@@ -5189,8 +5013,7 @@ No match
     aaaaaaaaaa
  0: aaaaaaaaaa
  1: aaaa
-    *** Failers
-No match
+\= Expect no match
     aaaaaaaaa
 No match
     aaaaaaaaaaa
@@ -5209,8 +5032,7 @@ No match
 /(?<=a)b/
     ab
  0: b
-    *** Failers
-No match
+\= Expect no match
     cb
 No match
     b
@@ -5286,8 +5108,7 @@ No match
  1: A
 
 /(?:(?i)a)b/
-    *** Failers
-No match
+\= Expect no match
     cb
 No match
     aB
@@ -5314,8 +5135,7 @@ No match
  1: A
 
 /(?i:a)b/
-    *** Failers
-No match
+\= Expect no match
     aB
 No match
     aB
@@ -5342,34 +5162,14 @@ No match
  1: a
 
 /(?:(?-i)a)b/i
-    *** Failers
-No match
     aB
  0: aB
-    Ab
-No match
-
-/((?-i)a)b/i
-
-/(?:(?-i)a)b/i
-    aB
- 0: aB
-
-/((?-i)a)b/i
-    aB
- 0: aB
- 1: a
-
-/(?:(?-i)a)b/i
-    *** Failers
-No match
+\= Expect no match
     Ab
 No match
     AB
 No match
 
-/((?-i)a)b/i
-
 /(?-i:a)b/i
     ab
  0: ab
@@ -5389,8 +5189,7 @@ No match
  1: a
 
 /(?-i:a)b/i
-    *** Failers
-No match
+\= Expect no match
     AB
 No match
     Ab
@@ -5408,8 +5207,7 @@ No match
  1: a
 
 /(?-i:a)b/i
-    *** Failers
-No match
+\= Expect no match
     Ab
 No match
     AB
@@ -5418,8 +5216,7 @@ No match
 /((?-i:a))b/i
 
 /((?-i:a.))b/i
-    *** Failers
-No match
+\= Expect no match
     AB
 No match
     a\nB
@@ -5464,8 +5261,7 @@ No match
  0: aaac
 
 /(?<![cd])b/
-    *** Failers
-No match
+\= Expect no match
     B\nB
 No match
     dbcb
@@ -5494,8 +5290,7 @@ No match
  0: ab
     aaa   
  0: aaa
-    *** Failers
-No match
+\= Expect no match
     dbcb
 No match
     a--
@@ -5553,8 +5348,7 @@ No match
 /^b/
 
 /()^b/
-    *** Failers
-No match
+\= Expect no match
     a\nb\nc\n
 No match
     a\nb\nc\n
@@ -5566,8 +5360,7 @@ No match
  1: b
 
 /(x)?(?(1)a|b)/
-    *** Failers
-No match
+\= Expect no match
     a
 No match
     a
@@ -5595,8 +5388,7 @@ No match
  2: )
     blah
  0: blah
-    *** Failers
-No match
+\= Expect no match
     a
 No match
     blah)
@@ -5611,8 +5403,7 @@ No match
  2: )
     blah
  0: blah
-    *** Failers
-No match
+\= Expect no match
     blah)
 No match
     (blah
@@ -5625,8 +5416,7 @@ No match
  0: a
 
 /(?(?=a)b|a)/
-    *** Failers
-No match
+\= Expect no match
     a
 No match
     a
@@ -5661,8 +5451,7 @@ No match
  2: aab
 
 /^(?=(a+?))\1ab/
-    *** Failers
-No match
+\= Expect no match
     aaab
 No match
     aaab
@@ -5697,10 +5486,7 @@ No match
  0: xy:z:::abcd
  1: xy:z:::
  2: abcd
-    *** Failers
- 0: Failers
- 1: <unset>
- 2: Failers
+\= Expect no match
     abcd:
 No match
     abcd:
@@ -5748,8 +5534,7 @@ No match
  1: x
 
 /a\Z/
-    *** Failers
-No match
+\= Expect no match
     aaab
 No match
     a\nb\n
@@ -5768,8 +5553,6 @@ No match
 /b\z/
     a\nb
  0: b
-    *** Failers
-No match
     
 /^(?>(?(1)\.|())[^\W_](?>[a-z0-9-]*[^\W_])?)+$/
     a
@@ -5799,8 +5582,7 @@ No match
     12-ab.1245 
  0: 12-ab.1245
  1: 
-    *** Failers
-No match
+\= Expect no match
     \
 No match
     .a
@@ -5835,18 +5617,19 @@ No match
     endingwxyz
  0: endingwxyz
  1: wxyz
-    *** Failers
-No match
+\= Expect no match
     a rather long string that doesn't end with one of them
 No match
 
 /word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/
     word cat dog elephant mussel cow horse canary baboon snake shark otherword
  0: word cat dog elephant mussel cow horse canary baboon snake shark otherword
+\= Expect no match
     word cat dog elephant mussel cow horse canary baboon snake shark
 No match
   
 /word (?>[a-zA-Z0-9]+ ){0,30}otherword/
+\= Expect no match
     word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
 No match
 
@@ -5855,8 +5638,7 @@ No match
  0: foo
     123999foo 
  0: foo
-    *** Failers
-No match
+\= Expect no match
     123abcfoo
 No match
     
@@ -5865,8 +5647,7 @@ No match
  0: foo
     123999foo 
  0: foo
-    *** Failers
-No match
+\= Expect no match
     123abcfoo
 No match
 
@@ -5875,8 +5656,7 @@ No match
  0: foo
     123456foo 
  0: foo
-    *** Failers
-No match
+\= Expect no match
     123999foo  
 No match
     
@@ -5885,8 +5665,7 @@ No match
  0: foo
     123456foo 
  0: foo
-    *** Failers
-No match
+\= Expect no match
     123999foo  
 No match
 
@@ -5992,8 +5771,7 @@ No match
  0: -
     0digit
  0: 0
-    *** Failers
-No match
+\= Expect no match
     bcdef    
 No match
     
@@ -6018,11 +5796,12 @@ No match
  0: ab
 
 /(?!\A)x/m
-  a\nxb\n
+    a\nxb\n
  0: x
 
 /(?!^)x/m
-  a\nxb\n
+\= Expect no match
+    a\nxb\n
 No match
 
 /abc\Qabc\Eabc/
@@ -6036,8 +5815,7 @@ No match
 /   abc\Q abc\Eabc/x
     abc abcabc
  0: abc abcabc
-    *** Failers
-No match
+\= Expect no match
     abcabcabc  
 No match
     
@@ -6077,8 +5855,7 @@ No match
 /\Gabc/
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xyzabc  
 No match
 
@@ -6096,8 +5873,7 @@ No match
 /a(?x: b c )d/
     XabcdY
  0: abcd
-    *** Failers 
-No match
+\= Expect no match 
     Xa b c d Y 
 No match
 
@@ -6112,8 +5888,7 @@ No match
 /(?i)AB(?-i)C/
     XabCY
  0: abC
-    *** Failers
-No match
+\= Expect no match
     XabcY  
 No match
 
@@ -6124,8 +5899,7 @@ No match
     DE
  0: DE
  1: D
-    *** Failers
-No match
+\= Expect no match
     abcE
 No match
     abCe  
@@ -6192,8 +5966,7 @@ No match
     a123:ddde:9999:b342::324e:dcba:abcd
  0: a123:ddde:9999:b342::324e:dcba:abcd
  1: 
-    *** Failers
-No match
+\= Expect no match
     1:2:3:4:5:6:7:8
 No match
     a123:bce:ddde:9999:b342::324e:dcba:abcd
@@ -6222,12 +5995,12 @@ No match
  0: d
     ] 
  0: ]
-    *** Failers
- 0: a
+\= Expect no match
     b     
 No match
 
 /(a+)*b/
+\= Expect no match
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 
 No match
     
@@ -6262,8 +6035,7 @@ No match
 /ab cd(?x) de fg/
     ab cddefg
  0: ab cddefg
-    ** Failers 
-No match
+\= Expect no match 
     abcddefg
 No match
 
@@ -6271,24 +6043,21 @@ No match
     foobarX 
  0: bar
  1: bar
-    ** Failers 
-No match
+\= Expect no match 
     boobarX
 No match
 
 /(?<![^f])X/
     offX
  0: X
-    ** Failers
-No match
+\= Expect no match
     onyX  
 No match
 
 /(?<=[^f])X/
     onyX
  0: X
-    ** Failers
-No match
+\= Expect no match
     offX 
 No match
 
@@ -6346,16 +6115,14 @@ No match
 "(?x)(?-x: \s*#\s*)"
     A # B
  0:  # 
-    ** Failers
-No match
+\= Expect no match
     #  
 No match
 
 "(?x-is)(?:(?-ixs) \s*#\s*) include"
     A #include
  0:  #include
-    ** Failers
-No match
+\= Expect no match
     A#include  
 No match
     A #Include
@@ -6433,16 +6200,14 @@ No match
 /^[\Eabc]/
     a
  0: a
-    ** Failers 
-No match
+\= Expect no match 
     E 
 No match
     
 /^[a-\Ec]/
     b
  0: b
-    ** Failers
-No match
+\= Expect no match
     -
 No match
     E    
@@ -6451,8 +6216,7 @@ No match
 /^[a\E\E-\Ec]/
     b
  0: b
-    ** Failers
-No match
+\= Expect no match
     -
 No match
     E    
@@ -6461,8 +6225,7 @@ No match
 /^[\E\Qa\E-\Qz\E]+/
     b
  0: b
-    ** Failers
-No match
+\= Expect no match
     -  
 No match
     
@@ -6514,23 +6277,26 @@ No match
  2: 
 
 /(a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-No match
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
  1: 
-
-/(?>a|)*\d/
+\= Expect no match
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 No match
+
+/(?>a|)*\d/
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
-
-/(?:a|)*\d/
+\= Expect no match
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 No match
+
+/(?:a|)*\d/
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+No match
 
 /\Z/g
   abc\n
@@ -6540,18 +6306,21 @@ No match
 /^(?s)(?>.*)(?<!\n)/
   abc
  0: abc
+\= Expect no match
   abc\n  
 No match
 
 /^(?![^\n]*\n\z)/
   abc
  0: 
+\= Expect no match
   abc\n 
 No match
   
 /\z(?<!\n)/
   abc
  0: 
+\= Expect no match
   abc\n  
 No match
 
@@ -6596,6 +6365,7 @@ No match
  0: p
 
 /.*[op][xyz]/
+\= Expect no match
     fooabcfoo
 No match
 
@@ -6608,6 +6378,7 @@ No match
 /(?(?=^.*b)b|^)/
    adc
  0: 
+\= Expect no match
    abc 
 No match
 
@@ -6643,8 +6414,7 @@ No match
  0: Ab
     CcC 
  0: c
-    ** Failers
-No match
+\= Expect no match
     XABX   
 No match
 
@@ -6653,10 +6423,12 @@ No match
  0: \x0a\x0b\x0c\x0d
 
 /(abc)\1/i
+\= Expect no match
    abc
 No match
 
 /(abc)\1/
+\= Expect no match
    abc
 No match
 
@@ -6673,16 +6445,14 @@ No match
  0: 12
 
 /[^a]*?X/i
-    ** Failers
-No match
+\= Expect no match
     12abc
 No match
     12ABC
 No match
     
 /[^a]+?X/i
-    ** Failers
-No match
+\= Expect no match
     12abc
 No match
     12ABC
@@ -6807,10 +6577,12 @@ No match
  3: aabab
 
 /(?>a+|ab)+?c/
+\= Expect no match
     aabc
 No match
 
 /(?>a+|ab)+c/
+\= Expect no match
     aabc
 No match
 
@@ -6830,10 +6602,12 @@ No match
  2: b
 
 /^(?:a|ab)++c/
+\= Expect no match
     aaaabc
 No match
 
 /^(?>a|ab)++c/
+\= Expect no match
     aaaabc
 No match
 
@@ -6845,8 +6619,7 @@ No match
     abcabcabc
  0: abc
  0+ abcabc
-    ** Failers
-No match
+\= Expect no match
     xyz  
 No match
     
@@ -6854,8 +6627,7 @@ No match
     abcabcabc
  0: abc
  0+ abcabc
-    ** Failers
-No match
+\= Expect no match
     xyz  
 No match
     
@@ -6863,8 +6635,7 @@ No match
     abcabcabc
  0: abc
  0+ abcabc
-    ** Failers
-No match
+\= Expect no match
     xyz  
 No match
     
@@ -6873,8 +6644,7 @@ No match
  0: xyz
 
 /(?=abc){1}xyz/
-    ** Failers
-No match
+\= Expect no match
     xyz 
 No match
     
@@ -6913,8 +6683,7 @@ No match
 /^[\g<a>]+/
     ggg<<<aaa>>>
  0: ggg<<<aaa>>>
-    ** Failers
-No match
+\= Expect no match
     \\ga  
 No match
     
@@ -6937,16 +6706,14 @@ No match
 /(?<=a{2})b/i
     xaabc
  0: b
-    ** Failers
-No match
+\= Expect no match
     xabc  
 No match
 
 /(?<!a{2})b/i
     xabc
  0: b
-    ** Failers
-No match
+\= Expect no match
     xaabc  
 No match
 
@@ -6959,16 +6726,14 @@ No match
  0: b
     aAAbc 
  0: b
-    ** Failers
-No match
+\= Expect no match
     xaabc    
 No match
 
 /(?<=[^a]{2})b/i
     axxbc  
  0: b
-    ** Failers
-No match
+\= Expect no match
     aAAbc 
 No match
     xaabc    
@@ -6998,40 +6763,28 @@ No match
     aaaaaaa
  0: aaaaaaa
  1: aaa
-    ** Failers
-No match
+\= Expect no match
     aaaaaa
 No match
     aaaaaaaaa 
 No match
 
 /^(a{2,3})++a/
-    ** Failers
-No match
+\= Expect no match
     aaaaaa
 No match
 
 /^(a{2,3})*+a/
-    ** Failers
-No match
+\= Expect no match
     aaaaaa
 No match
 
-/ab\Cde/
-    abXde
- 0: abXde
-    
-/(?<=ab\Cde)X/
-    abZdeX
- 0: X
-
 /\H\h\V\v/
     X X\x0a
  0: X X\x0a
     X\x09X\x0b
  0: X\x09X\x0b
-    ** Failers
-No match
+\= Expect no match
     \xa0 X\x0a   
 No match
     
@@ -7042,8 +6795,7 @@ No match
  0: \x09 \xa0\x0a\x0b\x0c\x0d
     \x09\x20\xa0\x0a\x0b\x0c
  0: \x09 \xa0\x0a\x0b\x0c
-    ** Failers 
-No match
+\= Expect no match 
     \x09\x20\xa0\x0a\x0b
 No match
      
@@ -7062,8 +6814,7 @@ No match
  0: XNNNYZ
     >  X NYQZ
  0:   X NYQZ
-    ** Failers
-No match
+\= Expect no match
     >XYZ   
 No match
     >  X NY Z
@@ -7120,12 +6871,11 @@ No match
     abcdef
  0: 
  0+ def
-    ** Failers
-No match
+\= Expect no match
     defabcxyz   
 No match
 
-/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/
+/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-2}Z/
     ababababbbabZXXXX
  0: ababababbbabZ
  1: ab
@@ -7140,6 +6890,7 @@ No match
  1: bon
     
 /(^(a|b\g{-1}))/
+\= Expect no match
     bacxxx
 No match
 
@@ -7150,8 +6901,7 @@ No match
     xyzxyz 
  0: xyzxyz
  1: xyz
-    ** Failers
-No match
+\= Expect no match
     abcxyz
 No match
     xyzabc   
@@ -7164,8 +6914,7 @@ No match
     xyzabc 
  0: xyzabc
  1: xyz
-    ** Failers 
-No match
+\= Expect no match 
     xyzxyz 
 No match
  
@@ -7207,8 +6956,7 @@ No match
     ab:ababxyz
  0: ab:abab
  1: ab
-    ** Failers
-No match
+\= Expect no match
     a:axyz
 No match
     ab:abxyz
@@ -7221,8 +6969,7 @@ No match
     ab:ababxyz
  0: ab:abab
  1: ab
-    ** Failers
-No match
+\= Expect no match
     a:axyz
 No match
     ab:abxyz
@@ -7272,8 +7019,7 @@ No match
  0: 10.0.0.0
  1: <unset>
  2: .0
-    ** Failers
-No match
+\= Expect no match
     10.6
 No match
     455.3.4.5
@@ -7289,8 +7035,7 @@ No match
     10.0.0.0
  0: 10.0.0.0
  1: .0
-    ** Failers
-No match
+\= Expect no match
     10.6
 No match
     455.3.4.5
@@ -7300,8 +7045,7 @@ No match
     now is the time for all good men to come to the aid of the party
  0: now is the time for all good men to come to the aid of the party
  1: party
-    *** Failers
-No match
+\= Expect no match
     this is not a line with only words and spaces!
 No match
 
@@ -7310,8 +7054,7 @@ No match
  0: 12345a
  1: 12345
  2: a
-    *** Failers
-No match
+\= Expect no match
     12345+
 No match
 
@@ -7341,8 +7084,7 @@ No match
     (abc(def)xyz)
  0: (abc(def)xyz)
  1: xyz
-    *** Failers
-No match
+\= Expect no match
     ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 No match
 
@@ -7356,8 +7098,7 @@ No match
     a(b(c))d
  0: a(b(c))d
  1: d
-    *** Failers)
-No match
+\= Expect no match)
     a(b(c)d
 No match
 
@@ -7395,8 +7136,7 @@ No match
  2: <unset>
  3: AblewasIereIsawElba
  4: A
-    *** Failers
-No match
+\= Expect no match
     Thequickbrownfox
 No match
 
@@ -7411,8 +7151,7 @@ No match
     -12
  0: -12
  1: -12
-    *** Failers
-No match
+\= Expect no match
     ((2+2)*-3)-7)
 No match
 
@@ -7425,8 +7164,7 @@ No match
  0: xxyzxyzz
  1: xxyzxyzz
  2: xyzxyz
-    *** Failers
-No match
+\= Expect no match
     xxyzz
 No match
     xxyzxyzxyzz
@@ -7457,28 +7195,32 @@ No match
  0: <>
  1: <>
  2: <>
-    *** Failers
-No match
+\= Expect no match
     <abc
 No match
 
 /^a+(*FAIL)/
+\= Expect no match
     aaaaaa
 No match
     
 /a+b?c+(*FAIL)/
+\= Expect no match
     aaabccc
 No match
 
 /a+b?(*PRUNE)c+(*FAIL)/
+\= Expect no match
     aaabccc
 No match
 
 /a+b?(*COMMIT)c+(*FAIL)/
+\= Expect no match
     aaabccc
 No match
     
 /a+b?(*SKIP)c+(*FAIL)/
+\= Expect no match
     aaabcccaaabccc
 No match
 
@@ -7522,6 +7264,7 @@ No match
  1: ddd
 
 /a+b?(*THEN)c+(*FAIL)/
+\= Expect no match
     aaabccc
 No match
 
@@ -7544,8 +7287,7 @@ No match
  1: ACD
  2: C
  3: E
-    ** Failers
-No match
+\= Expect no match
     AD 
 No match
         
@@ -7572,8 +7314,7 @@ No match
  2: <unset>
  3: Able was I ere I saw Elba
  4: A
-    *** Failers
-No match
+\= Expect no match
     The quick brown fox
 No match
 
@@ -7601,6 +7342,7 @@ No match
  0: ablewasiereisawelba
  1: ablewasiereisawelba
  2: a
+\= Expect no match     
     rhubarb
 No match
     the quick brown fox  
@@ -7610,8 +7352,7 @@ No match
     baz
  0: a
  1: a
-    ** Failers
-No match
+\= Expect no match
     caz  
 No match
     
@@ -7619,8 +7360,7 @@ No match
     zbaaz
  0: a
  1: a
-    ** Failers
-No match
+\= Expect no match
     aaa  
 No match
     
@@ -7636,8 +7376,7 @@ No match
     defdef 
  0: defdef
  1: def
-    ** Failers
-No match
+\= Expect no match
     abcdef
 No match
     defabc   
@@ -7650,8 +7389,7 @@ No match
     defabc
  0: defabc
  1: def
-    ** Failers
-No match
+\= Expect no match
     defdef
 No match
     abcdef    
@@ -7671,8 +7409,7 @@ No match
  4: "
  5: <unset>
  6: "
-    ** Failers 
-No match
+\= Expect no match 
     b\"11111
 No match
 
@@ -7683,8 +7420,7 @@ No match
     CCD
  0: CC
  1: C
-    ** Failers
-No match
+\= Expect no match
     CAD   
 No match
 
@@ -7695,8 +7431,7 @@ No match
     BCD 
  0: BC
  1: C
-    ** Failers
-No match
+\= Expect no match
     ABCD
 No match
     CAD
@@ -7720,8 +7455,7 @@ No match
     BAX  
  0: BA
  1: A
-    ** Failers
-No match
+\= Expect no match
     ACX
 No match
     ABC   
@@ -7742,16 +7476,14 @@ No match
  2: ef
 
 /^(?=a(*SKIP)b|ac)/
-    ** Failers
-No match
+\= Expect no match
     ac
 No match
     
 /^(?=a(*PRUNE)b)/
     ab  
  0: 
-    ** Failers 
-No match
+\= Expect no match 
     ac
 No match
 
@@ -7825,14 +7557,14 @@ No match
 # I think is a Perl bug.
 
 /A(*COMMIT)(B|D)/
+\= Expect no match
     ACABX
 No match
 
 # Check the use of names for failure
 
 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark
-    ** Failers
-No match
+\= Expect no match
     AC
 No match, mark = A
     CB    
@@ -7843,20 +7575,22 @@ No match, mark = B
  0: C
  1: C
 MK: A
+\= Expect no match
     D
 No match, mark = A
      
 /^(A(*THEN:A)B|C(*THEN:B)D)/mark
-    ** Failers
-No match
+\= Expect no match
     CB    
 No match, mark = B
 
 /^(?:A(*THEN:A)B|C(*THEN:B)D)/mark
+\= Expect no match
     CB    
 No match, mark = B
     
 /^(?>A(*THEN:A)B|C(*THEN:B)D)/mark
+\= Expect no match
     CB    
 No match, mark = B
     
@@ -7882,6 +7616,7 @@ No match, mark = B
  0: AC
 
 /(*:A)A+(*SKIP:A)(B|Z)/mark
+\= Expect no match
     AAAC
 No match, mark = A
 
@@ -7905,8 +7640,7 @@ MK: B
  1: A
  2: B
  3: C
-    ** Failers
-No match
+\= Expect no match
     DEFGABC  
 No match
 
@@ -7918,6 +7652,7 @@ No match
  1: a
 
 /(\w+)b(*COMMIT)\w{2}/
+\= Expect no match
     abbb
 No match
 
@@ -7930,10 +7665,12 @@ No match
 # COMMIT should override THEN.
 
 /(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?/
+\= Expect no match
   yes
 No match
 
 /(?>(*COMMIT)(yes|no)(*THEN)(*F))?/
+\= Expect no match
   yes
 No match
 
@@ -7944,10 +7681,12 @@ No match
  0: bc
    
 /(*SKIP)bc/
+\= Expect no match
     a
 No match
 
 /(*SKIP)b/
+\= Expect no match
     a 
 No match
 
@@ -7963,9 +7702,7 @@ No match
     aA     
  0: aA
  1: a
-    ** Failers
- 0: **
- 1: *
+\= Expect no match
     ab
 No match
     aB
@@ -7978,8 +7715,7 @@ No match
 /^(?&t)*+(?(DEFINE)(?<t>a))\w$/
     aaaaaaX
  0: aaaaaaX
-    ** Failers 
-No match
+\= Expect no match 
     aaaaaa 
 No match
 
@@ -7998,8 +7734,7 @@ No match
  0: Y
  1: <unset>
  2: Y
-    ** Failers 
-No match
+\= Expect no match 
     aaaa
 No match
 
@@ -8010,8 +7745,7 @@ No match
     YZ 
  0: Y
  1: Y
-    ** Failers 
-No match
+\= Expect no match 
     aaaa
 No match
 
@@ -8020,8 +7754,7 @@ No match
  0: aaaaX
  1: a
  2: X
-    ** Failers 
-No match
+\= Expect no match 
     aaaa
 No match
     YZ 
@@ -8031,8 +7764,7 @@ No match
     aaaaX
  0: aaaaX
  1: X
-    ** Failers 
-No match
+\= Expect no match 
     aaaa
 No match
     YZ 
@@ -8061,8 +7793,7 @@ No match
  0: aaaaX
  1: a
  2: X
-    ** Failers
-No match
+\= Expect no match
     aaa
 No match
     YZ 
@@ -8072,8 +7803,7 @@ No match
     aaaaX
  0: aaaaX
  1: X
-    ** Failers
-No match
+\= Expect no match
     aaa
 No match
     YZ 
@@ -8091,16 +7821,14 @@ No match
  1: 
 
 /(a)++(?1)b/
-    ** Failers
-No match
+\= Expect no match
     ab 
 No match
     aab
 No match
 
 /(a)*+(?1)b/
-    ** Failers
-No match
+\= Expect no match
     ab
 No match
     aab  
@@ -8157,6 +7885,7 @@ No match
  1: a
     
 /^(a)(?1)++ab/
+\= Expect no match
     aaaab
 No match
 
@@ -8229,6 +7958,7 @@ MK: any \x0aname
 # Capture
 
 /^.*? (a(*THEN)b) c/x
+\= Expect no match
     aabc
 No match
 
@@ -8244,12 +7974,14 @@ No match
  2: ab
 
 /^.*? ( (a(*THEN)b) ) c/x
+\= Expect no match
     aabc
 No match
 
 # Non-capture
 
 /^.*? (?:a(*THEN)b) c/x
+\= Expect no match
     aabc
 No match
 
@@ -8262,12 +7994,14 @@ No match
  0: aabc
 
 /^.*? (?: (?:a(*THEN)b) ) c/x
+\= Expect no match
     aabc
 No match
 
 # Atomic
 
 /^.*? (?>a(*THEN)b) c/x
+\= Expect no match
     aabc
 No match
 
@@ -8280,12 +8014,14 @@ No match
  0: aabc
 
 /^.*? (?> (?>a(*THEN)b) ) c/x
+\= Expect no match
     aabc
 No match
 
 # Possessive capture
 
 /^.*? (a(*THEN)b)++ c/x
+\= Expect no match
     aabc
 No match
 
@@ -8301,12 +8037,14 @@ No match
  2: ab
 
 /^.*? ( (a(*THEN)b)++ )++ c/x
+\= Expect no match
     aabc
 No match
 
 # Possessive non-capture
 
 /^.*? (?:a(*THEN)b)++ c/x
+\= Expect no match
     aabc
 No match
 
@@ -8319,6 +8057,7 @@ No match
  0: aabc
 
 /^.*? (?: (?:a(*THEN)b)++ )++ c/x
+\= Expect no match
     aabc
 No match
     
@@ -8331,6 +8070,7 @@ No match
 # Condition
 
 /^.*?(?(?=a)a|b(*THEN)c)/
+\= Expect no match
     ba
 No match
 
@@ -8339,6 +8079,7 @@ No match
  0: ba
 
 /^.*?(?(?=a)a(*THEN)b|c)/
+\= Expect no match
     ac
 No match
 
@@ -8374,8 +8115,7 @@ MK: m
     xabcd
  0: c
  1: ab
-    ** Failers 
-No match
+\= Expect no match 
     xacd
 No match
     
@@ -8413,6 +8153,7 @@ MK: N
  0: C
  1: C
 MK: B
+\= Expect no match
     D 
 No match, mark = B
 
@@ -8421,6 +8162,7 @@ No match, mark = B
  0: C
  1: C
 MK: B
+\= Expect no match
     D 
 No match, mark = B
 
@@ -8429,6 +8171,7 @@ No match, mark = B
  0: C
  1: C
 MK: B
+\= Expect no match
     D 
 No match, mark = B
 
@@ -8437,6 +8180,7 @@ No match, mark = B
  0: C
  1: C
 MK: B
+\= Expect no match
     D 
 No match, mark = B
 
@@ -8445,28 +8189,33 @@ No match, mark = B
  0: C
  1: C
 MK: B
+\= Expect no match
     D 
 No match, mark = B
 
 # This should fail, as the skip causes a bump to offset 3 (the skip).
 
 /A(*MARK:A)A+(*SKIP)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 No match, mark = A
 
 # Same 
 
 /A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 No match, mark = B
 
 /A(*:A)A+(*SKIP)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 No match, mark = A
 
 # This should fail, as a null name is the same as no name.
 
 /A(*MARK:A)A+(*SKIP:)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 No match, mark = A
 
@@ -8482,8 +8231,7 @@ MK: A
     XXYZ 
  0: XXY
 MK: B
-    ** Failers
-No match
+\= Expect no match
     XAQQ  
 No match, mark = A
     XAQQXZZ  
@@ -8502,8 +8250,7 @@ MK: A
  0: CD
  1: CD
 MK: B
-    ** Failers
-No match
+\= Expect no match
     AC
 No match, mark = A
     CB    
@@ -8518,8 +8265,7 @@ MK: A
  0: CD
  1: CD
 MK: B
-    ** Failers
-No match
+\= Expect no match
     AC
 No match, mark = A
     CB    
@@ -8558,16 +8304,14 @@ MK: A
     aw 
  0: aw
 MK: n
-    ** Failers 
-No match, mark = n
+\= Expect no match 
     abc
 No match, mark = m
 
 /b(*:m)f|aw/mark
     abaw
  0: aw
-    ** Failers 
-No match
+\= Expect no match 
     abc
 No match, mark = m
     abax 
@@ -8578,14 +8322,12 @@ No match, mark = m
  0: AAC
 
 /a(*PRUNE:X)bc|qq/mark,no_start_optimize
-    ** Failers
-No match, mark = X
+\= Expect no match
     axy
 No match, mark = X
 
 /a(*THEN:X)bc|qq/mark,no_start_optimize
-    ** Failers
-No match, mark = X
+\= Expect no match
     axy
 No match, mark = X
 
@@ -8593,8 +8335,7 @@ No match, mark = X
     abxy
  0: abx
 MK: A
-    ** Failers
-No match
+\= Expect no match
     abpq  
 No match
 
@@ -8602,8 +8343,7 @@ No match
     abxy
  0: abx
 MK: Y
-    ** Failers
-No match
+\= Expect no match
     abpq  
 No match
 
@@ -8611,8 +8351,7 @@ No match
     abxy
  0: abx
 MK: A
-    ** Failers
-No match
+\= Expect no match
     abpq  
 No match
 
@@ -8620,8 +8359,7 @@ No match
     abxy
  0: abx
 MK: Y
-    ** Failers
-No match
+\= Expect no match
     abpq  
 No match
 
@@ -8629,8 +8367,7 @@ No match
     abxy
  0: abx
 MK: A
-    ** Failers
-No match
+\= Expect no match
     abpq  
 No match
 
@@ -8638,8 +8375,7 @@ No match
     abxy
  0: abx
 MK: Y
-    ** Failers
-No match
+\= Expect no match
     abpq  
 No match
 
@@ -8650,6 +8386,7 @@ No match
  2: 
 
 /(another)?(\1+)test/
+\= Expect no match
     hello world test
 No match
 
@@ -8675,22 +8412,6 @@ No match
     aba
  0: aba
 
-/.*?a(*PRUNE)b/
-    aab
- 0: ab
-
-/.*?a(*PRUNE)b/s
-    aab
- 0: ab
-
-/^a(*PRUNE)b/s
-    aab
-No match
-
-/.*?a(*SKIP)b/
-    aab
- 0: ab
-
 /(?>.*?a)b/s
     aab
  0: ab
@@ -8700,6 +8421,7 @@ No match
  0: ab
 
 /(?>^a)b/s
+\= Expect no match
     aab
 No match
 
@@ -8722,6 +8444,7 @@ No match
  2: wxyz
 
 "(?>.*)foo"
+\= Expect no match
     abcdfooxyz
 No match
     
@@ -8738,6 +8461,7 @@ No match
  0: ac
 
 /(?<=(*SKIP)ac)a/
+\= Expect no match
     aa
 No match
 
@@ -8827,6 +8551,7 @@ MK: n
 # This gives "no match", as expected. 
 
 /aaaaa(*COMMIT)b|a+c/
+\= Expect no match
     aaaaaac
 No match
 
@@ -8903,6 +8628,7 @@ No match
     abc
  0: abc
  1: ab
+\= Expect no match
     abd
 No match
 
@@ -8919,10 +8645,11 @@ No match
  0: abd
 
 /a(?=b(*COMMIT)c)[^d]|abd/
+    abc
+ 0: ab
+\= Expect no match
     abd
 No match
-    abc 
- 0: ab
 
 /a(?=bc).|abd/
     abd
@@ -8931,6 +8658,7 @@ No match
  0: ab
     
 /a(?>b(*COMMIT)c)d|abd/
+\= Expect no match
     abceabd 
 No match
 
@@ -8943,6 +8671,7 @@ No match
  0: abd
 
 /(?>a(*COMMIT)c)d|abd/
+\= Expect no match
     abd
 No match
 
@@ -8956,8 +8685,7 @@ No match
 # made them compatible. 
     
 /^(a)?(?(1)a|b)+$/
-    *** Failers
-No match
+\= Expect no match
     a
 No match
 
@@ -8977,8 +8705,8 @@ No match
     abcd
  0: abcd
 
-
 /A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/x,mark
+\= Expect no match
     AAAC
 No match, mark = A
 
@@ -8986,68 +8714,82 @@ No match, mark = A
     abcd
  0: abcd
  1: abcd
-    *** Failers 
-No match
+\= Expect no match 
     abcxy 
 No match
     
 /^((yes|no)(*THEN)(*F))?/
+\= Expect no match
     yes
 No match
 
 /(A (.*)   C? (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   C? (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   C? (*THEN)  | A D) \s* (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   C? (*THEN)  | A D) \s* z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   (?:C|) (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   (?:C|) (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   C{0,6} (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   C{0,6} (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   (CE){0,6} (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCEBefgBhiBqz
 No match
 
 /(A (.*)   (CE){0,6} (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCEBefgBhiBqz
 No match
 
 /(A (.*)   (CE*){0,6} (*THEN)  | A D) (*FAIL)/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(A (.*)   (CE*){0,6} (*THEN)  | A D) z/x
+\= Expect no match
     AbcdCBefgBhiBqz
 No match
 
 /(?=a(*COMMIT)b|ac)ac|ac/
+\= Expect no match
     ac
 No match
 
 /(?=a(*COMMIT)b|(ac)) ac | (a)c/x
+\= Expect no match
     ac
 No match
 
@@ -9082,6 +8824,7 @@ No match
  0: bn
 
 /(?=b(*SKIP)a)bn|bnn/
+\= Expect no match
     bnn
 No match
 
@@ -9148,30 +8891,35 @@ MK: m(m
 /^\d*\w{4}/
     1234
  0: 1234
+\= Expect no match
     123 
 No match
 
 /^[^b]*\w{4}/
     aaaa
  0: aaaa
+\= Expect no match
     aaa     
 No match
 
 /^[^b]*\w{4}/i
     aaaa
  0: aaaa
+\= Expect no match
     aaa     
 No match
 
 /^a*\w{4}/
     aaaa
  0: aaaa
+\= Expect no match
     aaa     
 No match
 
 /^a*\w{4}/i
     aaaa
  0: aaaa
+\= Expect no match
     aaa     
 No match
 
@@ -9194,8 +8942,7 @@ No match
  1: A
  2: <unset>
  3: bar
-    ** Failers 
-No match
+\= Expect no match 
     Afoofoo
 No match
     Abarbar
@@ -9278,6 +9025,7 @@ No match
  1: ab
 
 /(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc/
+\= Expect no match
     acb
 No match
 
@@ -9337,6 +9085,7 @@ No match
  2: b
 
 /(?:(?P=same)?(?:(?P=same)(?P<same>a)(?P=same)|(?P=same)?(?P<same>b)(?P=same)){2}(?P=same)(?P<same>c)(?P=same)){2}(?P<same>z)?/g,dupnames
+\= Expect no match
     bbbaaaccccaaabbbcc
 No match
 
@@ -9463,4 +9212,49 @@ No match
  0: 
  1: 
 
+/(?|(aaa)|(b))\g{1}/
+    aaaaaa
+ 0: aaaaaa
+ 1: aaa
+    bb 
+ 0: bb
+ 1: b
+
+/(?|(aaa)|(b))(?1)/
+    aaaaaa
+ 0: aaaaaa
+ 1: aaa
+    baaa 
+ 0: baaa
+ 1: b
+\= Expect no match 
+    bb 
+No match
+
+/(?|(aaa)|(b))/
+    xaaa
+ 0: aaa
+ 1: aaa
+    xbc 
+ 0: b
+ 1: b
+
+/(?|(?'a'aaa)|(?'a'b))\k'a'/
+    aaaaaa
+ 0: aaaaaa
+ 1: aaa
+    bb 
+ 0: bb
+ 1: b
+
+/(?|(?'a'aaa)|(?'a'b))(?'a'cccc)\k'a'/dupnames
+    aaaccccaaa
+ 0: aaaccccaaa
+ 1: aaa
+ 2: cccc
+    bccccb 
+ 0: bccccb
+ 1: b
+ 2: cccc
+
 # End of testinput1 
diff --git a/testdata/testoutput10 b/testdata/testoutput10
index ef248db..9761f0f 100644
--- a/testdata/testoutput10
+++ b/testdata/testoutput10
@@ -1,70 +1,10 @@
 # This set of tests is for UTF-8 support and Unicode property support, with
 # relevance only for the 8-bit library.
 
-/X(\C{3})/utf
-    X\x{1234}
- 0: X\x{1234}
- 1: \x{1234}
-
-/X(\C{4})/utf
-    X\x{1234}YZ
- 0: X\x{1234}Y
- 1: \x{1234}Y
-
-/X\C*/utf
-    XYZabcdce
- 0: XYZabcdce
-
-/X\C*?/utf
-    XYZabcde
- 0: X
-
-/X\C{3,5}/utf
-    Xabcdefg
- 0: Xabcde
-    X\x{1234}
- 0: X\x{1234}
-    X\x{1234}YZ
- 0: X\x{1234}YZ
-    X\x{1234}\x{512}
- 0: X\x{1234}\x{512}
-    X\x{1234}\x{512}YZ
- 0: X\x{1234}\x{512}
-
-/X\C{3,5}?/utf
-    Xabcdefg
- 0: Xabc
-    X\x{1234}
- 0: X\x{1234}
-    X\x{1234}YZ
- 0: X\x{1234}
-    X\x{1234}\x{512}
- 0: X\x{1234}
-
-/a\Cb/utf
-    aXb
- 0: aXb
-    a\nb
- 0: a\x{0a}b
-
-/a\C\Cb/utf
-    a\x{100}b
- 0: a\x{100}b
-
-/ab\Cde/utf
-    abXde
- 0: abXde
-
-/a\C\Cb/utf
-    a\x{100}b
- 0: a\x{100}b
-    ** Failers
-No match
-    a\x{12257}b
-No match
+# The next 4 patterns have UTF-8 errors
 
 /[�]/utf
-Failed: error -8 at offset 0: UTF-8 error: byte 2 top bits not 0x80
+Failed: error -8 at offset 1: UTF-8 error: byte 2 top bits not 0x80
 
 /�/utf
 Failed: error -3 at offset 0: UTF-8 error: 1 byte missing at end
@@ -72,7 +12,13 @@ Failed: error -3 at offset 0: UTF-8 error: 1 byte missing at end
 /���xxx/utf
 Failed: error -8 at offset 0: UTF-8 error: byte 2 top bits not 0x80
 
+/��������/utf
+Failed: error -22 at offset 2: UTF-8 error: isolated byte with 0x80 bit set
+
+# Now test subjects
+
 /badutf/utf
+\= Expect UTF-8 errors
     X\xdf
 Failed: error -3: UTF-8 error: 1 byte missing at end at offset 1
     XX\xef
@@ -146,13 +92,14 @@ Failed: error -20: UTF-8 error: overlong 5-byte sequence at offset 0
     \xfc\x80\x80\x80\x80\x8f
 Failed: error -21: UTF-8 error: overlong 6-byte sequence at offset 0
     \x80
-Failed: error -22: UTF-8 error: isolated 0x80 byte at offset 0
+Failed: error -22: UTF-8 error: isolated byte with 0x80 bit set at offset 0
     \xfe
 Failed: error -23: UTF-8 error: illegal byte (0xfe or 0xff) at offset 0
     \xff
 Failed: error -23: UTF-8 error: illegal byte (0xfe or 0xff) at offset 0
 
 /badutf/utf
+\= Expect UTF-8 errors
     XX\xfb\x80\x80\x80\x80
 Failed: error -13: UTF-8 error: 5-byte character is not allowed (RFC 3629) at offset 2
     XX\xfd\x80\x80\x80\x80\x80
@@ -161,6 +108,7 @@ Failed: error -14: UTF-8 error: 6-byte character is not allowed (RFC 3629) at of
 Failed: error -15: UTF-8 error: code points greater than 0x10ffff are not defined at offset 2
 
 /shortutf/utf
+\= Expect UTF-8 errors
     XX\xdf\=ph
 Failed: error -3: UTF-8 error: 1 byte missing at end at offset 2
     XX\xef\=ph
@@ -193,6 +141,7 @@ Failed: error -4: UTF-8 error: 2 bytes missing at end at offset 0
 Failed: error -3: UTF-8 error: 1 byte missing at end at offset 0
 
 /anything/utf
+\= Expect UTF-8 errors
     X\xc0\x80
 Failed: error -17: UTF-8 error: overlong 2-byte sequence at offset 1
     XX\xc1\x8f
@@ -209,6 +158,15 @@ Failed: error -21: UTF-8 error: overlong 6-byte sequence at offset 0
 Failed: error -23: UTF-8 error: illegal byte (0xfe or 0xff) at offset 0
     \xff\x80\x80\x80\x80\x80
 Failed: error -23: UTF-8 error: illegal byte (0xfe or 0xff) at offset 0
+    \xf8\x88\x80\x80\x80
+Failed: error -13: UTF-8 error: 5-byte character is not allowed (RFC 3629) at offset 0
+    \xf9\x87\x80\x80\x80
+Failed: error -13: UTF-8 error: 5-byte character is not allowed (RFC 3629) at offset 0
+    \xfc\x84\x80\x80\x80\x80
+Failed: error -14: UTF-8 error: 6-byte character is not allowed (RFC 3629) at offset 0
+    \xfd\x83\x80\x80\x80\x80
+Failed: error -14: UTF-8 error: 6-byte character is not allowed (RFC 3629) at offset 0
+\= Expect no match
     \xc3\x8f
 No match
     \xe0\xaf\x80
@@ -219,14 +177,6 @@ No match
 No match
     \xf1\x8f\x80\x80
 No match
-    \xf8\x88\x80\x80\x80
-Failed: error -13: UTF-8 error: 5-byte character is not allowed (RFC 3629) at offset 0
-    \xf9\x87\x80\x80\x80
-Failed: error -13: UTF-8 error: 5-byte character is not allowed (RFC 3629) at offset 0
-    \xfc\x84\x80\x80\x80\x80
-Failed: error -14: UTF-8 error: 6-byte character is not allowed (RFC 3629) at offset 0
-    \xfd\x83\x80\x80\x80\x80
-Failed: error -14: UTF-8 error: 6-byte character is not allowed (RFC 3629) at offset 0
     \xf8\x88\x80\x80\x80\=no_utf_check
 No match
     \xf9\x87\x80\x80\x80\=no_utf_check
@@ -235,7 +185,62 @@ No match
 No match
     \xfd\x83\x80\x80\x80\x80\=no_utf_check
 No match
+    
+# Similar tests with offsets
 
+/badutf/utf
+\= Expect UTF-8 errors
+    X\xdfabcd
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=1
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+\= Expect no match
+    X\xdfabcd\=offset=2
+No match
+
+/(?<=x)badutf/utf
+\= Expect UTF-8 errors
+    X\xdfabcd
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=1
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=2
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\xdf\=offset=3
+Failed: error -3: UTF-8 error: 1 byte missing at end at offset 6
+\= Expect no match
+    X\xdfabcd\=offset=3
+No match
+
+/(?<=xx)badutf/utf
+\= Expect UTF-8 errors
+    X\xdfabcd
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=1
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=2
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=3
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+
+/(?<=xxxx)badutf/utf
+\= Expect UTF-8 errors
+    X\xdfabcd
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=1
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=2
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabcd\=offset=3
+Failed: error -8: UTF-8 error: byte 2 top bits not 0x80 at offset 1
+    X\xdfabc\xdf\=offset=6
+Failed: error -3: UTF-8 error: 1 byte missing at end at offset 5
+    X\xdfabc\xdf\=offset=7
+Failed: error -33: bad offset value
+\= Expect no match
+    X\xdfabcd\=offset=6
+No match
+ 
 /\x{100}/IB,utf
 ------------------------------------------------------------------
         Bra
@@ -448,29 +453,6 @@ First code unit = \xf0
 Last code unit = \xab
 Subject length lower bound = 1
 
-# This one is here not because it's different to Perl, but because the way
-# the captured single-byte is displayed. (In Perl it becomes a character, and you
-# can't tell the difference.)
-
-/X(\C)(.*)/utf
-    X\x{1234}
- 0: X\x{1234}
- 1: \x{e1}
- 2: \x{88}\x{b4}
-    X\nabc
- 0: X\x{0a}abc
- 1: \x{0a}
- 2: abc
-
-# This one is here because Perl gives out a grumbly error message (quite
-# correctly, but that messes up comparisons).
-
-/a\Cb/utf
-    *** Failers
-No match
-    a\x{100}b
-No match
-
 /[^ab\xC0-\xF0]/IB,utf
 ------------------------------------------------------------------
         Bra
@@ -499,8 +481,7 @@ Subject length lower bound = 1
  0: \x{100}
     \x{1000}
  0: \x{1000}
-    *** Failers
- 0: *
+\= Expect no match
     \x{c0}
 No match
     \x{f0}
@@ -659,8 +640,6 @@ Subject length lower bound = 1
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers
-No match
 
 /[\xff]/IB,utf
 ------------------------------------------------------------------
@@ -750,33 +729,35 @@ Failed: error 106 at offset 15: missing terminating ] for character class
 # This tests the stricter UTF-8 check according to RFC 3629.
 
 /X/utf
+\= Expect UTF-8 errors
     \x{d800}
 Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 0
-    \x{d800}\=no_utf_check
-No match
     \x{da00}
 Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 0
-    \x{da00}\=no_utf_check
-No match
     \x{dfff}
 Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 0
-    \x{dfff}\=no_utf_check
-No match
     \x{110000}
 Failed: error -15: UTF-8 error: code points greater than 0x10ffff are not defined at offset 0
-    \x{110000}\=no_utf_check
-No match
     \x{2000000}
 Failed: error -13: UTF-8 error: 5-byte character is not allowed (RFC 3629) at offset 0
-    \x{2000000}\=no_utf_check
-No match
     \x{7fffffff}
 Failed: error -14: UTF-8 error: 6-byte character is not allowed (RFC 3629) at offset 0
+\= Expect no match
+    \x{d800}\=no_utf_check
+No match
+    \x{da00}\=no_utf_check
+No match
+    \x{dfff}\=no_utf_check
+No match
+    \x{110000}\=no_utf_check
+No match
+    \x{2000000}\=no_utf_check
+No match
     \x{7fffffff}\=no_utf_check
 No match
 
 /(*UTF8)\x{1234}/
-  abcd\x{1234}pqr
+    abcd\x{1234}pqr
  0: \x{1234}
 
 /(*CRLF)(*UTF)(*BSR_UNICODE)a\Rb/I
@@ -887,16 +868,19 @@ Subject length lower bound = 3
 /a+/utf
     a\x{123}aa\=offset=1
  0: aa
-    a\x{123}aa\=offset=2
-Error -36 (bad UTF-8 offset)
     a\x{123}aa\=offset=3
  0: aa
     a\x{123}aa\=offset=4
  0: a
-    a\x{123}aa\=offset=5
-No match
+\= Expect bad offset value
     a\x{123}aa\=offset=6
 Failed: error -33: bad offset value
+\= Expect bad UTF-8 offset     
+    a\x{123}aa\=offset=2
+Error -36 (bad UTF-8 offset)
+\= Expect no match
+    a\x{123}aa\=offset=5
+No match
 
 /\x{1234}+/Ii,utf
 Capturing subpattern count = 0
@@ -1281,8 +1265,6 @@ Subject length lower bound = 1
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers 
-No match
 
 /[z-\x{100}]/IB,utf
 ------------------------------------------------------------------
@@ -1467,8 +1449,7 @@ Subject length lower bound = 1
  0: \x{105}
     \x{109}  
  0: \x{109}
-    ** Failers
-No match
+\= Expect no match
     \x{100}
 No match
     \x{10a} 
@@ -1507,8 +1488,7 @@ Subject length lower bound = 1
  0: \x{100}
     \x{101} 
  0: \x{101}
-    ** Failers
-No match
+\= Expect no match
     \x{102}
 No match
     Y
@@ -1547,7 +1527,16 @@ Last code unit = 'B' (caseless)
 Subject length lower bound = 2
 
 /abc/utf,replace=�
-   abc
+    abc
 Failed: error -3: UTF-8 error: 1 byte missing at end
 
+/(?<=(a)(?-1))x/I,utf
+Capturing subpattern count = 1
+Max lookbehind = 2
+Options: utf
+First code unit = 'x'
+Subject length lower bound = 1
+    a\x80zx\=offset=3
+Failed: error -22: UTF-8 error: isolated byte with 0x80 bit set at offset 1
+
 # End of testinput10
diff --git a/testdata/testoutput11-16 b/testdata/testoutput11-16
index eda8938..03e04bc 100644
--- a/testdata/testoutput11-16
+++ b/testdata/testoutput11-16
@@ -4,13 +4,8 @@
 # different, so they have separate output files.
     
 #forbid_utf
+#newline_default LF ANY ANYCRLF
 
-/a\Cb/
-    aXb
- 0: aXb
-    a\nb
- 0: a\x0ab
-  
 /[^\x{c4}]/IB
 ------------------------------------------------------------------
         Bra
@@ -581,7 +576,7 @@ Failed: error 134 at offset 11: character code point value in \x{} or \o{} is to
 
 # Non-UTF characters 
 
-/\C{2,3}/
+/.{2,3}/
     \x{400000}\x{400001}\x{400002}\x{400003}
 ** Character \x{400000} is greater than 0xffff and UTF-16 mode is not enabled.
 ** Truncation will probably give the wrong result.
@@ -646,4 +641,6 @@ Starting code units: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0e
   \xfc \xfd \xfe \xff 
 Subject length lower bound = 1
 
+/(*THEN:\[A]{65501})/expand
+
 # End of testinput11
diff --git a/testdata/testoutput11-32 b/testdata/testoutput11-32
index f048785..390ebe0 100644
--- a/testdata/testoutput11-32
+++ b/testdata/testoutput11-32
@@ -4,13 +4,8 @@
 # different, so they have separate output files.
     
 #forbid_utf
+#newline_default LF ANY ANYCRLF
 
-/a\Cb/
-    aXb
- 0: aXb
-    a\nb
- 0: a\x0ab
-  
 /[^\x{c4}]/IB
 ------------------------------------------------------------------
         Bra
@@ -582,7 +577,7 @@ Subject length lower bound = 2
 
 # Non-UTF characters 
 
-/\C{2,3}/
+/.{2,3}/
     \x{400000}\x{400001}\x{400002}\x{400003}
  0: \x{400000}\x{400001}\x{400002}
 
@@ -649,4 +644,6 @@ Starting code units: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0e
   \xfc \xfd \xfe \xff 
 Subject length lower bound = 1
 
+/(*THEN:\[A]{65501})/expand
+
 # End of testinput11
diff --git a/testdata/testoutput12-16 b/testdata/testoutput12-16
index 81584dd..383a032 100644
--- a/testdata/testoutput12-16
+++ b/testdata/testoutput12-16
@@ -9,78 +9,6 @@
     �]
 ** Failed: invalid UTF-8 string cannot be used as input in UTF mode
 
-/X(\C{3})/utf
-    X\x{11234}Y
- 0: X\x{11234}Y
- 1: \x{11234}Y
-    X\x{11234}YZ
- 0: X\x{11234}Y
- 1: \x{11234}Y
-
-/X(\C{4})/utf
-    X\x{11234}YZ
- 0: X\x{11234}YZ
- 1: \x{11234}YZ
-    X\x{11234}YZW
- 0: X\x{11234}YZ
- 1: \x{11234}YZ
-
-/X\C*/utf
-    XYZabcdce
- 0: XYZabcdce
-
-/X\C*?/utf
-    XYZabcde
- 0: X
-
-/X\C{3,5}/utf
-    Xabcdefg
- 0: Xabcde
-    X\x{11234}Y
- 0: X\x{11234}Y
-    X\x{11234}YZ
- 0: X\x{11234}YZ
-    X\x{11234}\x{512}
- 0: X\x{11234}\x{512}
-    X\x{11234}\x{512}YZ
- 0: X\x{11234}\x{512}YZ
-    X\x{11234}\x{512}\x{11234}Z
- 0: X\x{11234}\x{512}\x{11234}
-
-/X\C{3,5}?/utf
-    Xabcdefg
- 0: Xabc
-    X\x{11234}Y
- 0: X\x{11234}Y
-    X\x{11234}YZ
- 0: X\x{11234}Y
-    X\x{11234}\x{512}YZ
- 0: X\x{11234}\x{512}
-    *** Failers
-No match
-    X\x{11234}
-No match
-
-/a\Cb/utf
-    aXb
- 0: aXb
-    a\nb
- 0: a\x{0a}b
-
-/a\C\Cb/utf
-    a\x{12257}b
- 0: a\x{12257}b
-    a\x{12257}\x{11234}b
-No match
-    ** Failers
-No match
-    a\x{100}b
-No match
-
-/ab\Cde/utf
-    abXde
- 0: abXde
-
 # Check maximum character size 
 
 /\x{ffff}/IB,utf
@@ -310,29 +238,6 @@ First code unit = \x{d844}
 Last code unit = \x{deab}
 Subject length lower bound = 1
 
-# This one is here not because it's different to Perl, but because the way
-# the captured single-byte is displayed. (In Perl it becomes a character, and you
-# can't tell the difference.) 
-
-/X(\C)(.*)/utf
-    X\x{1234}
- 0: X\x{1234}
- 1: \x{1234}
- 2: 
-    X\nabc
- 0: X\x{0a}abc
- 1: \x{0a}
- 2: abc
-
-# This one is here because Perl gives out a grumbly error message (quite
-# correctly, but that messes up comparisons). 
-
-/a\Cb/utf
-    *** Failers
-No match
-    a\x{100}b
- 0: a\x{100}b
-
 /[^ab\xC0-\xF0]/IB,utf
 ------------------------------------------------------------------
         Bra
@@ -362,8 +267,7 @@ Subject length lower bound = 1
  0: \x{100}
     \x{1000}
  0: \x{1000}
-    *** Failers
- 0: *
+\= Expect no match
     \x{c0}
 No match
     \x{f0}
@@ -520,8 +424,6 @@ Subject length lower bound = 1
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers
-No match
 
 /[\xff]/IB,utf
 ------------------------------------------------------------------
@@ -607,30 +509,38 @@ Subject length lower bound = 2
 Failed: error 106 at offset 13: missing terminating ] for character class
 
 /X/utf
-    XX\x{d800}
-Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
     XX\x{d800}\=no_utf_check
  0: X
-    XX\x{da00}
-Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
     XX\x{da00}\=no_utf_check
  0: X
-    XX\x{dc00}
-Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
     XX\x{dc00}\=no_utf_check
  0: X
-    XX\x{de00}
-Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
     XX\x{de00}\=no_utf_check
  0: X
-    XX\x{dfff}
-Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
     XX\x{dfff}\=no_utf_check
  0: X
+\= Expect UTF error
+    XX\x{d800}
+Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
+    XX\x{da00}
+Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
+    XX\x{dc00}
+Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
+    XX\x{de00}
+Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
+    XX\x{dfff}
+Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
     XX\x{110000}
 ** Failed: character \x{110000} is greater than 0x10ffff and so cannot be converted to UTF-16
     XX\x{d800}\x{1234}
 Failed: error -25: UTF-16 error: invalid low surrogate at offset 3
+\= Expect no match
+    XX\x{d800}\=offset=3
+No match
+    
+/(?<=.)X/utf
+    XX\x{d800}\=offset=3
+Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
 
 /(*UTF16)\x{11234}/
   abcd\x{11234}pqr
@@ -788,8 +698,10 @@ Subject length lower bound = 3
  0: aa
     a\x{123}aa\=offset=3
  0: a
+\= Expect no match
     a\x{123}aa\=offset=4
 No match
+\= Expect bad offset error     
     a\x{123}aa\=offset=5
 Failed: error -33: bad offset value
     a\x{123}aa\=offset=6
@@ -854,16 +766,21 @@ Subject length lower bound = 1
 # Check bad offset 
 
 /a/utf
+\= Expect bad UTF-16 offset, or no match in 32-bit
     \x{10000}\=offset=1
 Error -36 (bad UTF-16 offset)
     \x{10000}ab\=offset=1
 Error -36 (bad UTF-16 offset)
+\= Expect 16-bit match, 32-bit no match
     \x{10000}ab\=offset=2
  0: a
+\= Expect no match     
     \x{10000}ab\=offset=3
 No match
+\= Expect no match in 16-bit, bad offset in 32-bit    
     \x{10000}ab\=offset=4
 No match
+\= Expect bad offset     
     \x{10000}ab\=offset=5
 Failed: error -33: bad offset value
 
@@ -1123,10 +1040,6 @@ Failed: error 134 at offset 9: character code point value in \x{} or \o{} is too
 /\o{4200000}/utf
 Failed: error 134 at offset 10: character code point value in \x{} or \o{} is too large
 
-/\C/utf
-    \x{110000}
-** Failed: character \x{110000} is greater than 0x10ffff and so cannot be converted to UTF-16
-
 /\x{100}*A/IB,utf
 ------------------------------------------------------------------
         Bra
@@ -1174,8 +1087,6 @@ Subject length lower bound = 1
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers 
-No match
 
 /[z-\x{100}]/IB,utf
 ------------------------------------------------------------------
@@ -1365,8 +1276,7 @@ Subject length lower bound = 1
  0: \x{105}
     \x{109}  
  0: \x{109}
-    ** Failers
-No match
+\= Expect no match
     \x{100}
 No match
     \x{10a} 
@@ -1410,8 +1320,7 @@ Subject length lower bound = 1
  0: \x{100}
     \x{101} 
  0: \x{101}
-    ** Failers
-No match
+\= Expect no match
     \x{102}
 No match
     Y
@@ -1454,4 +1363,8 @@ Starting code units: \xff
 Last code unit = 'B' (caseless)
 Subject length lower bound = 2
 
+/./utf
+    \x{110000}
+** Failed: character \x{110000} is greater than 0x10ffff and so cannot be converted to UTF-16
+
 # End of testinput12
diff --git a/testdata/testoutput12-32 b/testdata/testoutput12-32
index 89ac70a..95f1834 100644
--- a/testdata/testoutput12-32
+++ b/testdata/testoutput12-32
@@ -9,76 +9,6 @@
     �]
 ** Failed: invalid UTF-8 string cannot be used as input in UTF mode
 
-/X(\C{3})/utf
-    X\x{11234}Y
-No match
-    X\x{11234}YZ
- 0: X\x{11234}YZ
- 1: \x{11234}YZ
-
-/X(\C{4})/utf
-    X\x{11234}YZ
-No match
-    X\x{11234}YZW
- 0: X\x{11234}YZW
- 1: \x{11234}YZW
-
-/X\C*/utf
-    XYZabcdce
- 0: XYZabcdce
-
-/X\C*?/utf
-    XYZabcde
- 0: X
-
-/X\C{3,5}/utf
-    Xabcdefg
- 0: Xabcde
-    X\x{11234}Y
-No match
-    X\x{11234}YZ
- 0: X\x{11234}YZ
-    X\x{11234}\x{512}
-No match
-    X\x{11234}\x{512}YZ
- 0: X\x{11234}\x{512}YZ
-    X\x{11234}\x{512}\x{11234}Z
- 0: X\x{11234}\x{512}\x{11234}Z
-
-/X\C{3,5}?/utf
-    Xabcdefg
- 0: Xabc
-    X\x{11234}Y
-No match
-    X\x{11234}YZ
- 0: X\x{11234}YZ
-    X\x{11234}\x{512}YZ
- 0: X\x{11234}\x{512}Y
-    *** Failers
-No match
-    X\x{11234}
-No match
-
-/a\Cb/utf
-    aXb
- 0: aXb
-    a\nb
- 0: a\x{0a}b
-
-/a\C\Cb/utf
-    a\x{12257}b
-No match
-    a\x{12257}\x{11234}b
- 0: a\x{12257}\x{11234}b
-    ** Failers
-No match
-    a\x{100}b
-No match
-
-/ab\Cde/utf
-    abXde
- 0: abXde
-
 # Check maximum character size 
 
 /\x{ffff}/IB,utf
@@ -303,29 +233,6 @@ Options: utf
 First code unit = \x{212ab}
 Subject length lower bound = 1
 
-# This one is here not because it's different to Perl, but because the way
-# the captured single-byte is displayed. (In Perl it becomes a character, and you
-# can't tell the difference.) 
-
-/X(\C)(.*)/utf
-    X\x{1234}
- 0: X\x{1234}
- 1: \x{1234}
- 2: 
-    X\nabc
- 0: X\x{0a}abc
- 1: \x{0a}
- 2: abc
-
-# This one is here because Perl gives out a grumbly error message (quite
-# correctly, but that messes up comparisons). 
-
-/a\Cb/utf
-    *** Failers
-No match
-    a\x{100}b
- 0: a\x{100}b
-
 /[^ab\xC0-\xF0]/IB,utf
 ------------------------------------------------------------------
         Bra
@@ -355,8 +262,7 @@ Subject length lower bound = 1
  0: \x{100}
     \x{1000}
  0: \x{1000}
-    *** Failers
- 0: *
+\= Expect no match
     \x{c0}
 No match
     \x{f0}
@@ -513,8 +419,6 @@ Subject length lower bound = 1
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers
-No match
 
 /[\xff]/IB,utf
 ------------------------------------------------------------------
@@ -600,30 +504,38 @@ Subject length lower bound = 2
 Failed: error 106 at offset 13: missing terminating ] for character class
 
 /X/utf
-    XX\x{d800}
-Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
     XX\x{d800}\=no_utf_check
  0: X
-    XX\x{da00}
-Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
     XX\x{da00}\=no_utf_check
  0: X
-    XX\x{dc00}
-Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
     XX\x{dc00}\=no_utf_check
  0: X
-    XX\x{de00}
-Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
     XX\x{de00}\=no_utf_check
  0: X
-    XX\x{dfff}
-Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
     XX\x{dfff}\=no_utf_check
  0: X
+\= Expect UTF error
+    XX\x{d800}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{da00}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{dc00}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{de00}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{dfff}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
     XX\x{110000}
 Failed: error -28: UTF-32 error: code points greater than 0x10ffff are not defined at offset 2
     XX\x{d800}\x{1234}
 Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+\= Expect no match
+    XX\x{d800}\=offset=3
+No match
+    
+/(?<=.)X/utf
+    XX\x{d800}\=offset=3
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
 
 /(*UTF16)\x{11234}/
 Failed: error 160 at offset 5: (*VERB) not recognized or malformed
@@ -780,8 +692,10 @@ Subject length lower bound = 3
  0: aa
     a\x{123}aa\=offset=3
  0: a
+\= Expect no match
     a\x{123}aa\=offset=4
 No match
+\= Expect bad offset error     
     a\x{123}aa\=offset=5
 Failed: error -33: bad offset value
     a\x{123}aa\=offset=6
@@ -846,16 +760,21 @@ Subject length lower bound = 1
 # Check bad offset 
 
 /a/utf
+\= Expect bad UTF-16 offset, or no match in 32-bit
     \x{10000}\=offset=1
 No match
     \x{10000}ab\=offset=1
  0: a
+\= Expect 16-bit match, 32-bit no match
     \x{10000}ab\=offset=2
 No match
+\= Expect no match     
     \x{10000}ab\=offset=3
 No match
+\= Expect no match in 16-bit, bad offset in 32-bit    
     \x{10000}ab\=offset=4
 Failed: error -33: bad offset value
+\= Expect bad offset     
     \x{10000}ab\=offset=5
 Failed: error -33: bad offset value
 
@@ -1115,10 +1034,6 @@ Failed: error 134 at offset 9: character code point value in \x{} or \o{} is too
 /\o{4200000}/utf
 Failed: error 134 at offset 10: character code point value in \x{} or \o{} is too large
 
-/\C/utf
-    \x{110000}
-Failed: error -28: UTF-32 error: code points greater than 0x10ffff are not defined at offset 0
-
 /\x{100}*A/IB,utf
 ------------------------------------------------------------------
         Bra
@@ -1166,8 +1081,6 @@ Subject length lower bound = 1
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers 
-No match
 
 /[z-\x{100}]/IB,utf
 ------------------------------------------------------------------
@@ -1357,8 +1270,7 @@ Subject length lower bound = 1
  0: \x{105}
     \x{109}  
  0: \x{109}
-    ** Failers
-No match
+\= Expect no match
     \x{100}
 No match
     \x{10a} 
@@ -1402,8 +1314,7 @@ Subject length lower bound = 1
  0: \x{100}
     \x{101} 
  0: \x{101}
-    ** Failers
-No match
+\= Expect no match
     \x{102}
 No match
     Y
@@ -1446,4 +1357,8 @@ Starting code units: \xff
 Last code unit = 'B' (caseless)
 Subject length lower bound = 2
 
+/./utf
+    \x{110000}
+Failed: error -28: UTF-32 error: code points greater than 0x10ffff are not defined at offset 0
+
 # End of testinput12
diff --git a/testdata/testoutput14 b/testdata/testoutput14
deleted file mode 100644
index cdfd6f7..0000000
--- a/testdata/testoutput14
+++ /dev/null
@@ -1,242 +0,0 @@
-# These are:
-#
-# (1) Tests of the match-limiting features. The results are different for
-# interpretive or JIT matching, so this test should not be run with JIT. The
-# same tests are run using JIT in test 16.
-
-# (2) Other tests that must not be run with JIT.
-
-/(a+)*zz/I
-Capturing subpattern count = 1
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\=find_limits
-Minimum match limit = 8
-Minimum recursion limit = 6
- 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazz
- 1: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-  aaaaaaaaaaaaaz\=find_limits
-Minimum match limit = 32768
-Minimum recursion limit = 29
-No match
-
-!((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)!I
-Capturing subpattern count = 1
-May match empty string
-Subject length lower bound = 0
-   /* this is a C style comment */\=find_limits
-Minimum match limit = 120
-Minimum recursion limit = 6
- 0: /* this is a C style comment */
- 1: /* this is a C style comment */
-
-/^(?>a)++/
-    aa\=find_limits
-Minimum match limit = 5
-Minimum recursion limit = 2
- 0: aa
-    aaaaaaaaa\=find_limits
-Minimum match limit = 12
-Minimum recursion limit = 2
- 0: aaaaaaaaa
-    
-/(a)(?1)++/
-    aa\=find_limits
-Minimum match limit = 7
-Minimum recursion limit = 4
- 0: aa
- 1: a
-    aaaaaaaaa\=find_limits
-Minimum match limit = 21
-Minimum recursion limit = 4
- 0: aaaaaaaaa
- 1: a
-
-/a(?:.)*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 65
-Minimum recursion limit = 2
- 0: abbbbbbbbbbbbbbbbbbbbba
-    
-/a(?:.(*THEN))*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 86
-Minimum recursion limit = 45
- 0: abbbbbbbbbbbbbbbbbbbbba
-
-/a(?:.(*THEN:ABC))*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 86
-Minimum recursion limit = 45
- 0: abbbbbbbbbbbbbbbbbbbbba
-
-/^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
-     aabbccddee\=find_limits
-Minimum match limit = 7
-Minimum recursion limit = 2
- 0: aabbccddee
-
-/^(?>(a+))(?>(b+))(?>(c+))(?>(d+))(?>(e+))/
-     aabbccddee\=find_limits
-Minimum match limit = 17
-Minimum recursion limit = 16
- 0: aabbccddee
- 1: aa
- 2: bb
- 3: cc
- 4: dd
- 5: ee
-
-/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
-     aabbccddee\=find_limits
-Minimum match limit = 13
-Minimum recursion limit = 10
- 0: aabbccddee
- 1: aa
- 2: cc
- 3: ee
-
-/(*LIMIT_MATCH=12bc)abc/
-Failed: error 160 at offset 0: (*VERB) not recognized or malformed
-
-/(*LIMIT_MATCH=4294967290)abc/
-Failed: error 160 at offset 0: (*VERB) not recognized or malformed
-
-/(*LIMIT_RECURSION=4294967280)abc/I
-Capturing subpattern count = 0
-Recursion limit = 4294967280
-First code unit = 'a'
-Last code unit = 'c'
-Subject length lower bound = 3
-
-/(a+)*zz/
-    aaaaaaaaaaaaaz
-No match
-    aaaaaaaaaaaaaz\=match_limit=3000
-Failed: error -47: match limit exceeded
-
-/(a+)*zz/
-    aaaaaaaaaaaaaz\=recursion_limit=10
-Failed: error -53: recursion limit exceeded
-
-/(*LIMIT_MATCH=3000)(a+)*zz/I
-Capturing subpattern count = 1
-Match limit = 3000
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-    aaaaaaaaaaaaaz
-Failed: error -47: match limit exceeded
-    aaaaaaaaaaaaaz\=match_limit=60000
-Failed: error -47: match limit exceeded
-
-/(*LIMIT_MATCH=60000)(*LIMIT_MATCH=3000)(a+)*zz/I
-Capturing subpattern count = 1
-Match limit = 3000
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-    aaaaaaaaaaaaaz
-Failed: error -47: match limit exceeded
-
-/(*LIMIT_MATCH=60000)(a+)*zz/I
-Capturing subpattern count = 1
-Match limit = 60000
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-    aaaaaaaaaaaaaz
-No match
-    aaaaaaaaaaaaaz\=match_limit=3000
-Failed: error -47: match limit exceeded
-
-/(*LIMIT_RECURSION=10)(a+)*zz/I
-Capturing subpattern count = 1
-Recursion limit = 10
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-    aaaaaaaaaaaaaz
-Failed: error -53: recursion limit exceeded
-    aaaaaaaaaaaaaz\=recursion_limit=1000
-Failed: error -53: recursion limit exceeded
-
-/(*LIMIT_RECURSION=10)(*LIMIT_RECURSION=1000)(a+)*zz/I
-Capturing subpattern count = 1
-Recursion limit = 1000
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-    aaaaaaaaaaaaaz
-No match
-
-/(*LIMIT_RECURSION=1000)(a+)*zz/I
-Capturing subpattern count = 1
-Recursion limit = 1000
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-    aaaaaaaaaaaaaz
-No match
-    aaaaaaaaaaaaaz\=recursion_limit=10
-Failed: error -53: recursion limit exceeded
-    
-# These three have infinitely nested recursions. 
-    
-/((?2))((?1))/
-    abc
-Failed: error -52: nested recursion at the same subject position
-
-/((?(R2)a+|(?1)b))/
-    aaaabcde
-Failed: error -52: nested recursion at the same subject position
-
-/(?(R)a*(?1)|((?R))b)/
-    aaaabcde
-Failed: error -52: nested recursion at the same subject position
-    
-# The allusedtext modifier does not work with JIT, which does not maintain
-# the leftchar/rightchar data.
-
-/abc(?=xyz)/allusedtext
-    abcxyzpqr
- 0: abcxyz
-       >>>
-    abcxyzpqr\=aftertext
- 0: abcxyz
-       >>>
- 0+ xyzpqr
-    
-/(?<=pqr)abc(?=xyz)/allusedtext
-    xyzpqrabcxyzpqr
- 0: pqrabcxyz
-    <<<   >>>
-    xyzpqrabcxyzpqr\=aftertext
- 0: pqrabcxyz
-    <<<   >>>
- 0+ xyzpqr
-    
-/a\b/
-    a.\=allusedtext
- 0: a.
-     >
-    a\=allusedtext  
- 0: a
-
-/abc\Kxyz/
-    abcxyz\=allusedtext
- 0: abcxyz
-    <<<   
-
-/abc(?=xyz(*ACCEPT))/
-    abcxyz\=allusedtext
- 0: abcxyz
-       >>>
-
-/abc(?=abcde)(?=ab)/allusedtext
-    abcabcdefg
- 0: abcabcde
-       >>>>>
-
-# End of testinput14
diff --git a/testdata/testoutput14-16 b/testdata/testoutput14-16
new file mode 100644
index 0000000..05b7d48
--- /dev/null
+++ b/testdata/testoutput14-16
@@ -0,0 +1,61 @@
+# These test special (mostly error) UTF features of DFA matching. They are a 
+# selection of the more comprehensive tests that are run for non-DFA matching.
+# The output is different for the different widths.
+
+#subject dfa
+
+/X/utf
+    XX\x{d800}
+Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
+    XX\x{d800}\=offset=3
+No match
+    XX\x{d800}\=no_utf_check
+ 0: X
+    XX\x{da00}
+Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
+    XX\x{da00}\=no_utf_check
+ 0: X
+    XX\x{dc00}
+Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
+    XX\x{dc00}\=no_utf_check
+ 0: X
+    XX\x{de00}
+Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
+    XX\x{de00}\=no_utf_check
+ 0: X
+    XX\x{dfff}
+Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
+    XX\x{dfff}\=no_utf_check
+ 0: X
+    XX\x{110000}
+** Failed: character \x{110000} is greater than 0x10ffff and so cannot be converted to UTF-16
+    XX\x{d800}\x{1234}
+Failed: error -25: UTF-16 error: invalid low surrogate at offset 3
+          
+/badutf/utf
+    X\xdf
+No match
+    XX\xef
+No match
+    XXX\xef\x80
+No match
+    X\xf7
+No match
+    XX\xf7\x80
+No match
+    XXX\xf7\x80\x80
+No match
+
+/shortutf/utf
+    XX\xdf\=ph
+No match
+    XX\xef\=ph
+No match
+    XX\xef\x80\=ph
+No match
+    \xf7\=ph
+No match
+    \xf7\x80\=ph
+No match
+
+# End of testinput14
diff --git a/testdata/testoutput14-32 b/testdata/testoutput14-32
new file mode 100644
index 0000000..30d7fa6
--- /dev/null
+++ b/testdata/testoutput14-32
@@ -0,0 +1,61 @@
+# These test special (mostly error) UTF features of DFA matching. They are a 
+# selection of the more comprehensive tests that are run for non-DFA matching.
+# The output is different for the different widths.
+
+#subject dfa
+
+/X/utf
+    XX\x{d800}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{d800}\=offset=3
+No match
+    XX\x{d800}\=no_utf_check
+ 0: X
+    XX\x{da00}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{da00}\=no_utf_check
+ 0: X
+    XX\x{dc00}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{dc00}\=no_utf_check
+ 0: X
+    XX\x{de00}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{de00}\=no_utf_check
+ 0: X
+    XX\x{dfff}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{dfff}\=no_utf_check
+ 0: X
+    XX\x{110000}
+Failed: error -28: UTF-32 error: code points greater than 0x10ffff are not defined at offset 2
+    XX\x{d800}\x{1234}
+Failed: error -27: UTF-32 error: code points 0xd800-0xdfff are not defined at offset 2
+          
+/badutf/utf
+    X\xdf
+No match
+    XX\xef
+No match
+    XXX\xef\x80
+No match
+    X\xf7
+No match
+    XX\xf7\x80
+No match
+    XXX\xf7\x80\x80
+No match
+
+/shortutf/utf
+    XX\xdf\=ph
+No match
+    XX\xef\=ph
+No match
+    XX\xef\x80\=ph
+No match
+    \xf7\=ph
+No match
+    \xf7\x80\=ph
+No match
+
+# End of testinput14
diff --git a/testdata/testoutput14-8 b/testdata/testoutput14-8
new file mode 100644
index 0000000..1fb0dc1
--- /dev/null
+++ b/testdata/testoutput14-8
@@ -0,0 +1,61 @@
+# These test special (mostly error) UTF features of DFA matching. They are a 
+# selection of the more comprehensive tests that are run for non-DFA matching.
+# The output is different for the different widths.
+
+#subject dfa
+
+/X/utf
+    XX\x{d800}
+Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{d800}\=offset=3
+Error -36 (bad UTF-8 offset)
+    XX\x{d800}\=no_utf_check
+ 0: X
+    XX\x{da00}
+Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{da00}\=no_utf_check
+ 0: X
+    XX\x{dc00}
+Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{dc00}\=no_utf_check
+ 0: X
+    XX\x{de00}
+Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{de00}\=no_utf_check
+ 0: X
+    XX\x{dfff}
+Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 2
+    XX\x{dfff}\=no_utf_check
+ 0: X
+    XX\x{110000}
+Failed: error -15: UTF-8 error: code points greater than 0x10ffff are not defined at offset 2
+    XX\x{d800}\x{1234}
+Failed: error -16: UTF-8 error: code points 0xd800-0xdfff are not defined at offset 2
+          
+/badutf/utf
+    X\xdf
+Failed: error -3: UTF-8 error: 1 byte missing at end at offset 1
+    XX\xef
+Failed: error -4: UTF-8 error: 2 bytes missing at end at offset 2
+    XXX\xef\x80
+Failed: error -3: UTF-8 error: 1 byte missing at end at offset 3
+    X\xf7
+Failed: error -5: UTF-8 error: 3 bytes missing at end at offset 1
+    XX\xf7\x80
+Failed: error -4: UTF-8 error: 2 bytes missing at end at offset 2
+    XXX\xf7\x80\x80
+Failed: error -3: UTF-8 error: 1 byte missing at end at offset 3
+
+/shortutf/utf
+    XX\xdf\=ph
+Failed: error -3: UTF-8 error: 1 byte missing at end at offset 2
+    XX\xef\=ph
+Failed: error -4: UTF-8 error: 2 bytes missing at end at offset 2
+    XX\xef\x80\=ph
+Failed: error -3: UTF-8 error: 1 byte missing at end at offset 2
+    \xf7\=ph
+Failed: error -5: UTF-8 error: 3 bytes missing at end at offset 0
+    \xf7\x80\=ph
+Failed: error -4: UTF-8 error: 2 bytes missing at end at offset 0
+
+# End of testinput14
diff --git a/testdata/testoutput15 b/testdata/testoutput15
index fb945fd..bb29a49 100644
--- a/testdata/testoutput15
+++ b/testdata/testoutput15
@@ -1,17 +1,383 @@
-# This test is run only when JIT support is not available. It checks that an
-# attempt to use it has the expected behaviour. It also tests things that
-# are different without JIT.
+# These are:
+#
+# (1) Tests of the match-limiting features. The results are different for
+# interpretive or JIT matching, so this test should not be run with JIT. The
+# same tests are run using JIT in test 17.
 
-/abc/I,jit,jitverify
+# (2) Other tests that must not be run with JIT.
+
+/(a+)*zz/I
+Capturing subpattern count = 1
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\=find_limits
+Minimum match limit = 8
+Minimum recursion limit = 6
+ 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazz
+ 1: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+  aaaaaaaaaaaaaz\=find_limits
+Minimum match limit = 32768
+Minimum recursion limit = 29
+No match
+
+!((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)!I
+Capturing subpattern count = 1
+May match empty string
+Subject length lower bound = 0
+   /* this is a C style comment */\=find_limits
+Minimum match limit = 120
+Minimum recursion limit = 6
+ 0: /* this is a C style comment */
+ 1: /* this is a C style comment */
+
+/^(?>a)++/
+    aa\=find_limits
+Minimum match limit = 5
+Minimum recursion limit = 2
+ 0: aa
+    aaaaaaaaa\=find_limits
+Minimum match limit = 12
+Minimum recursion limit = 2
+ 0: aaaaaaaaa
+    
+/(a)(?1)++/
+    aa\=find_limits
+Minimum match limit = 7
+Minimum recursion limit = 4
+ 0: aa
+ 1: a
+    aaaaaaaaa\=find_limits
+Minimum match limit = 21
+Minimum recursion limit = 4
+ 0: aaaaaaaaa
+ 1: a
+
+/a(?:.)*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+Minimum match limit = 65
+Minimum recursion limit = 2
+ 0: abbbbbbbbbbbbbbbbbbbbba
+    
+/a(?:.(*THEN))*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+Minimum match limit = 86
+Minimum recursion limit = 45
+ 0: abbbbbbbbbbbbbbbbbbbbba
+
+/a(?:.(*THEN:ABC))*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+Minimum match limit = 86
+Minimum recursion limit = 45
+ 0: abbbbbbbbbbbbbbbbbbbbba
+
+/^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
+     aabbccddee\=find_limits
+Minimum match limit = 7
+Minimum recursion limit = 2
+ 0: aabbccddee
+
+/^(?>(a+))(?>(b+))(?>(c+))(?>(d+))(?>(e+))/
+     aabbccddee\=find_limits
+Minimum match limit = 17
+Minimum recursion limit = 16
+ 0: aabbccddee
+ 1: aa
+ 2: bb
+ 3: cc
+ 4: dd
+ 5: ee
+
+/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
+     aabbccddee\=find_limits
+Minimum match limit = 13
+Minimum recursion limit = 10
+ 0: aabbccddee
+ 1: aa
+ 2: cc
+ 3: ee
+
+/(*LIMIT_MATCH=12bc)abc/
+Failed: error 160 at offset 17: (*VERB) not recognized or malformed
+
+/(*LIMIT_MATCH=4294967290)abc/
+Failed: error 160 at offset 24: (*VERB) not recognized or malformed
+
+/(*LIMIT_RECURSION=4294967280)abc/I
 Capturing subpattern count = 0
+Recursion limit = 4294967280
 First code unit = 'a'
 Last code unit = 'c'
 Subject length lower bound = 3
-JIT support is not available in this version of PCRE2
 
-/a*/I
+/(a+)*zz/
+    aaaaaaaaaaaaaz
+No match
+    aaaaaaaaaaaaaz\=match_limit=3000
+Failed: error -47: match limit exceeded
+
+/(a+)*zz/
+    aaaaaaaaaaaaaz\=recursion_limit=10
+Failed: error -53: recursion limit exceeded
+
+/(*LIMIT_MATCH=3000)(a+)*zz/I
+Capturing subpattern count = 1
+Match limit = 3000
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+    aaaaaaaaaaaaaz
+Failed: error -47: match limit exceeded
+    aaaaaaaaaaaaaz\=match_limit=60000
+Failed: error -47: match limit exceeded
+
+/(*LIMIT_MATCH=60000)(*LIMIT_MATCH=3000)(a+)*zz/I
+Capturing subpattern count = 1
+Match limit = 3000
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+    aaaaaaaaaaaaaz
+Failed: error -47: match limit exceeded
+
+/(*LIMIT_MATCH=60000)(a+)*zz/I
+Capturing subpattern count = 1
+Match limit = 60000
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+    aaaaaaaaaaaaaz
+No match
+    aaaaaaaaaaaaaz\=match_limit=3000
+Failed: error -47: match limit exceeded
+
+/(*LIMIT_RECURSION=10)(a+)*zz/I
+Capturing subpattern count = 1
+Recursion limit = 10
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+    aaaaaaaaaaaaaz
+Failed: error -53: recursion limit exceeded
+    aaaaaaaaaaaaaz\=recursion_limit=1000
+Failed: error -53: recursion limit exceeded
+
+/(*LIMIT_RECURSION=10)(*LIMIT_RECURSION=1000)(a+)*zz/I
+Capturing subpattern count = 1
+Recursion limit = 1000
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+    aaaaaaaaaaaaaz
+No match
+
+/(*LIMIT_RECURSION=1000)(a+)*zz/I
+Capturing subpattern count = 1
+Recursion limit = 1000
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+    aaaaaaaaaaaaaz
+No match
+    aaaaaaaaaaaaaz\=recursion_limit=10
+Failed: error -53: recursion limit exceeded
+    
+# These three have infinitely nested recursions. 
+    
+/((?2))((?1))/
+    abc
+Failed: error -52: nested recursion at the same subject position
+
+/((?(R2)a+|(?1)b))/
+    aaaabcde
+Failed: error -52: nested recursion at the same subject position
+
+/(?(R)a*(?1)|((?R))b)/
+    aaaabcde
+Failed: error -52: nested recursion at the same subject position
+    
+# The allusedtext modifier does not work with JIT, which does not maintain
+# the leftchar/rightchar data.
+
+/abc(?=xyz)/allusedtext
+    abcxyzpqr
+ 0: abcxyz
+       >>>
+    abcxyzpqr\=aftertext
+ 0: abcxyz
+       >>>
+ 0+ xyzpqr
+    
+/(?<=pqr)abc(?=xyz)/allusedtext
+    xyzpqrabcxyzpqr
+ 0: pqrabcxyz
+    <<<   >>>
+    xyzpqrabcxyzpqr\=aftertext
+ 0: pqrabcxyz
+    <<<   >>>
+ 0+ xyzpqr
+    
+/a\b/
+    a.\=allusedtext
+ 0: a.
+     >
+    a\=allusedtext  
+ 0: a
+
+/abc\Kxyz/
+    abcxyz\=allusedtext
+ 0: abcxyz
+    <<<   
+
+/abc(?=xyz(*ACCEPT))/
+    abcxyz\=allusedtext
+ 0: abcxyz
+       >>>
+
+/abc(?=abcde)(?=ab)/allusedtext
+    abcabcdefg
+ 0: abcabcde
+       >>>>>
+    
+# These tests provoke recursion loops, which give a different error message
+# when JIT is used.
+
+/(?R)/I
 Capturing subpattern count = 0
 May match empty string
 Subject length lower bound = 0
+    abcd
+Failed: error -52: nested recursion at the same subject position
+
+/(a|(?R))/I
+Capturing subpattern count = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: a
+ 1: a
+    defg 
+Failed: error -52: nested recursion at the same subject position
+
+/(ab|(bc|(de|(?R))))/I
+Capturing subpattern count = 3
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: ab
+ 1: ab
+    fghi 
+Failed: error -52: nested recursion at the same subject position
+
+/(ab|(bc|(de|(?1))))/I
+Capturing subpattern count = 3
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: ab
+ 1: ab
+    fghi 
+Failed: error -52: nested recursion at the same subject position
+
+/x(ab|(bc|(de|(?1)x)x)x)/I
+Capturing subpattern count = 3
+First code unit = 'x'
+Subject length lower bound = 3
+    xab123
+ 0: xab
+ 1: ab
+    xfghi 
+Failed: error -52: nested recursion at the same subject position
+
+/(?!\w)(?R)/
+    abcd
+Failed: error -52: nested recursion at the same subject position
+    =abc 
+Failed: error -52: nested recursion at the same subject position
+
+/(?=\w)(?R)/
+    =abc 
+Failed: error -52: nested recursion at the same subject position
+    abcd
+Failed: error -52: nested recursion at the same subject position
+
+/(?<!\w)(?R)/
+    abcd
+Failed: error -52: nested recursion at the same subject position
+
+/(?<=\w)(?R)/
+    abcd
+Failed: error -52: nested recursion at the same subject position
+
+/(a+|(?R)b)/
+    aaa
+ 0: aaa
+ 1: aaa
+    bbb 
+Failed: error -52: nested recursion at the same subject position
+
+/[^\xff]((?1))/BI
+------------------------------------------------------------------
+        Bra
+        [^\x{ff}]
+        CBra 1
+        Recurse
+        Ket
+        Ket
+        End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Subject length lower bound = 1
+    abcd
+Failed: error -52: nested recursion at the same subject position
+    
+# These tests don't behave the same with JIT 
+
+/\w+(?C1)/BI,no_auto_possess
+------------------------------------------------------------------
+        Bra
+        \w+
+        Callout 1 8 0
+        Ket
+        End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: no_auto_possess
+Starting code units: 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P 
+  Q R S T U V W X Y Z _ a b c d e f g h i j k l m n o p q r s t u v w x y z 
+Subject length lower bound = 1
+    abc\=callout_fail=1
+--->abc
+  1 ^  ^    
+  1 ^ ^     
+  1 ^^      
+  1  ^ ^    
+  1  ^^     
+  1   ^^    
+No match
+
+/(*NO_AUTO_POSSESS)\w+(?C1)/BI
+------------------------------------------------------------------
+        Bra
+        \w+
+        Callout 1 26 0
+        Ket
+        End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Compile options: <none>
+Overall options: no_auto_possess
+Starting code units: 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P 
+  Q R S T U V W X Y Z _ a b c d e f g h i j k l m n o p q r s t u v w x y z 
+Subject length lower bound = 1
+    abc\=callout_fail=1
+--->abc
+  1 ^  ^    
+  1 ^ ^     
+  1 ^^      
+  1  ^ ^    
+  1  ^^     
+  1   ^^    
+No match
 
 # End of testinput15
diff --git a/testdata/testoutput16 b/testdata/testoutput16
index ae4fb41..616567b 100644
--- a/testdata/testoutput16
+++ b/testdata/testoutput16
@@ -1,384 +1,17 @@
-# This test is run only when JIT support is available. It checks JIT complete
-# and partial modes, and things that are different with JIT.
+# This test is run only when JIT support is not available. It checks that an
+# attempt to use it has the expected behaviour. It also tests things that
+# are different without JIT.
 
-#pattern jitverify
-
-# JIT does not support this pattern (callout at start of condition).
-
-/(?(?C1)(?=a)a)/I
-Capturing subpattern count = 0
-May match empty string
-Subject length lower bound = 0
-JIT compilation was not successful
-
-# The following pattern cannot be compiled by JIT.
-
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-Capturing subpattern count = 0
-May match empty string
-Subject length lower bound = 0
-JIT compilation was not successful
-
-# Check that an infinite recursion loop is caught.
-
-/(?(R)a*(?1)|((?R))b)/
-    aaaabcde
-Failed: error -46: JIT stack limit reached
-
-/abcd/I
+/abc/I,jit,jitverify
 Capturing subpattern count = 0
 First code unit = 'a'
-Last code unit = 'd'
-Subject length lower bound = 4
-JIT compilation was successful
-    abcd
- 0: abcd (JIT)
-    xyz
-No match (JIT)
-
-/(*NO_JIT)abcd/I
-Capturing subpattern count = 0
-First code unit = 'a'
-Last code unit = 'd'
-Subject length lower bound = 4
-JIT compilation was not successful
-    abcd
- 0: abcd
-    xyz
-No match
-
-/abcd/
-    abcd
- 0: abcd (JIT)
-    ab\=ps
-Partial match: ab (JIT)
-    ab\=ph
-Partial match: ab (JIT)
-    xyz
-No match (JIT)
-
-/abcd/jitfast
-    abcd
- 0: abcd (JIT)
-    ab\=ps
-Partial match: ab (JIT)
-    ab\=ph
-Partial match: ab (JIT)
-    xyz
-No match (JIT)
-
-/abcd/jit=1
-    abcd
- 0: abcd (JIT)
-    ab\=ps
-Partial match: ab
-    ab\=ph
-Partial match: ab
-    xyz
-No match (JIT)
-    xyz\=ps
-No match
-
-/abcd/jit=1,jitfast
-    abcd
- 0: abcd (JIT)
-    ab\=ps
-Failed: error -45: bad JIT option
-    ab\=ph
-Failed: error -45: bad JIT option
-    xyz
-No match (JIT)
-    xyz\=ps
-Failed: error -45: bad JIT option
-
-/abcd/jit=2
-    abcd
- 0: abcd
-    ab\=ps
-Partial match: ab (JIT)
-    ab\=ph
-Partial match: ab
-    xyz
-No match
-
-/abcd/jit=2,jitfast
-    abcd
-Failed: error -45: bad JIT option
-    ab\=ps
-Partial match: ab (JIT)
-    ab\=ph
-Failed: error -45: bad JIT option
-    xyz
-Failed: error -45: bad JIT option
-
-/abcd/jit=3
-    abcd
- 0: abcd (JIT)
-    ab\=ps
-Partial match: ab (JIT)
-    ab\=ph
-Partial match: ab
-    xyz
-No match (JIT)
-
-/abcd/jit=4
-    abcd
- 0: abcd
-    ab\=ps
-Partial match: ab
-    ab\=ph
-Partial match: ab (JIT)
-    xyz
-No match
-
-/abcd/jit=5
-    abcd
- 0: abcd (JIT)
-    ab\=ps
-Partial match: ab
-    ab\=ph
-Partial match: ab (JIT)
-    xyz
-No match (JIT)
-
-/abcd/jit=6
-    abcd
- 0: abcd
-    ab\=ps
-Partial match: ab (JIT)
-    ab\=ph
-Partial match: ab (JIT)
-    xyz
-No match
-
-/abcd/jit=7
-    abcd
- 0: abcd (JIT)
-    ab\=ps
-Partial match: ab (JIT)
-    ab\=ph
-Partial match: ab (JIT)
-    xyz
-No match (JIT)
+Last code unit = 'c'
+Subject length lower bound = 3
+JIT support is not available in this version of PCRE2
 
-/abcd/I,jit=2
+/a*/I
 Capturing subpattern count = 0
-First code unit = 'a'
-Last code unit = 'd'
-Subject length lower bound = 4
-JIT compilation was successful
-
-/(*NO_START_OPT)a(*:m)b/mark
-    a
-No match, mark = m (JIT)
-
-/^12345678abcd/m
-    12345678abcd
- 0: 12345678abcd (JIT)
-    
-# Limits tests that give different output with JIT. 
-
-/(a+)*zz/I
-Capturing subpattern count = 1
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-JIT compilation was successful
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\=find_limits
-Minimum match limit = 3
- 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazz (JIT)
- 1: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-  aaaaaaaaaaaaaz\=find_limits
-Minimum match limit = 16384
-No match (JIT)
-
-!((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)!I
-Capturing subpattern count = 1
 May match empty string
 Subject length lower bound = 0
-JIT compilation was successful
-   /* this is a C style comment */\=find_limits
-Minimum match limit = 2
- 0: /* this is a C style comment */ (JIT)
- 1: /* this is a C style comment */
-
-/^(?>a)++/
-    aa\=find_limits
-Minimum match limit = 2
- 0: aa (JIT)
-    aaaaaaaaa\=find_limits
-Minimum match limit = 2
- 0: aaaaaaaaa (JIT)
-    
-/(a)(?1)++/
-    aa\=find_limits
-Minimum match limit = 2
- 0: aa (JIT)
- 1: a
-    aaaaaaaaa\=find_limits
-Minimum match limit = 2
- 0: aaaaaaaaa (JIT)
- 1: a
-
-/a(?:.)*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 1
- 0: abbbbbbbbbbbbbbbbbbbbba (JIT)
-    
-/a(?:.(*THEN))*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 1
- 0: abbbbbbbbbbbbbbbbbbbbba (JIT)
-
-/a(?:.(*THEN:ABC))*?a/ims
-    abbbbbbbbbbbbbbbbbbbbba\=find_limits
-Minimum match limit = 1
- 0: abbbbbbbbbbbbbbbbbbbbba (JIT)
-
-/^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
-     aabbccddee\=find_limits
-Minimum match limit = 6
- 0: aabbccddee (JIT)
-
-/^(?>(a+))(?>(b+))(?>(c+))(?>(d+))(?>(e+))/
-     aabbccddee\=find_limits
-Minimum match limit = 6
- 0: aabbccddee (JIT)
- 1: aa
- 2: bb
- 3: cc
- 4: dd
- 5: ee
-
-/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
-     aabbccddee\=find_limits
-Minimum match limit = 6
- 0: aabbccddee (JIT)
- 1: aa
- 2: cc
- 3: ee
-
-/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/jitfast
-     aabbccddee\=find_limits
-Minimum match limit = 6
- 0: aabbccddee (JIT)
- 1: aa
- 2: cc
- 3: ee
-     aabbccddee\=jitstack=1
- 0: aabbccddee (JIT)
- 1: aa
- 2: cc
- 3: ee
-
-/(a+)*zz/
-    aaaaaaaaaaaaaz
-No match (JIT)
-    aaaaaaaaaaaaaz\=match_limit=3000
-Failed: error -47: match limit exceeded
-
-/(*LIMIT_MATCH=3000)(a+)*zz/I
-Capturing subpattern count = 1
-Match limit = 3000
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-JIT compilation was successful
-    aaaaaaaaaaaaaz
-Failed: error -47: match limit exceeded
-    aaaaaaaaaaaaaz\=match_limit=60000
-Failed: error -47: match limit exceeded
-
-/(*LIMIT_MATCH=60000)(*LIMIT_MATCH=3000)(a+)*zz/I
-Capturing subpattern count = 1
-Match limit = 3000
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-JIT compilation was successful
-    aaaaaaaaaaaaaz
-Failed: error -47: match limit exceeded
-
-/(*LIMIT_MATCH=60000)(a+)*zz/I
-Capturing subpattern count = 1
-Match limit = 60000
-Starting code units: a z 
-Last code unit = 'z'
-Subject length lower bound = 2
-JIT compilation was successful
-    aaaaaaaaaaaaaz
-No match (JIT)
-    aaaaaaaaaaaaaz\=match_limit=3000
-Failed: error -47: match limit exceeded
-
-# These three have infinitely nested recursions. 
-    
-/((?2))((?1))/
-    abc
-Failed: error -46: JIT stack limit reached
-
-/((?(R2)a+|(?1)b))/
-    aaaabcde
-Failed: error -46: JIT stack limit reached
-
-/(?(R)a*(?1)|((?R))b)/
-    aaaabcde
-Failed: error -46: JIT stack limit reached
-    
-# Invalid options disable JIT when called via pcre2_match(), causing the
-# match to happen via the interpreter, but for fast JIT invalid options are
-# ignored, so an unanchored match happens.
-
-/abcd/
-    abcd\=anchored
- 0: abcd
-    fail abcd\=anchored 
-No match
-    
-/abcd/jitfast
-    abcd\=anchored 
- 0: abcd (JIT)
-    succeed abcd\=anchored 
- 0: abcd (JIT)
-    
-# Push/pop does not lose the JIT information, though jitverify applies only to
-# compilation, but serializing (save/load) discards JIT data completely.
-
-/^abc\Kdef/info,push
-** Applies only to compile when pattern is stacked with 'push': jitverify
-Capturing subpattern count = 0
-Compile options: <none>
-Overall options: anchored
-Subject length lower bound = 6
-JIT compilation was successful
-#pop jitverify
-    abcdef
- 0: def (JIT)
-
-/^abc\Kdef/info,push
-** Applies only to compile when pattern is stacked with 'push': jitverify
-Capturing subpattern count = 0
-Compile options: <none>
-Overall options: anchored
-Subject length lower bound = 6
-JIT compilation was successful
-#save testsaved1
-#load testsaved1
-#pop jitverify
-    abcdef
- 0: def
-    
-#load testsaved1
-#pop jit,jitverify
-    abcdef
- 0: def (JIT)
-    
-# Test pattern compilation
-
-/(?:a|b|c|d|e)(?R)/jit=1
-
-/(?:a|b|c|d|e)(?R)(?R)/jit=1
-
-/(a(?:a|b|c|d|e)b){8,16}/jit=1
 
 # End of testinput16
diff --git a/testdata/testoutput17 b/testdata/testoutput17
index f46b7e7..0def438 100644
--- a/testdata/testoutput17
+++ b/testdata/testoutput17
@@ -1,148 +1,511 @@
-# This set of tests is run only with the 8-bit library. It tests the POSIX
-# interface, which is supported only with the 8-bit library. This test should
-# not be run with JIT (which is not available for the POSIX interface).
+# This test is run only when JIT support is available. It checks JIT complete
+# and partial modes, and things that are different with JIT.
+
+#pattern jitverify
+
+# JIT does not support this pattern (callout at start of condition).
+
+/(?(?C1)(?=a)a)/I
+Capturing subpattern count = 0
+May match empty string
+Subject length lower bound = 0
+JIT compilation was not successful (no more memory)
+
+# The following pattern cannot be compiled by JIT.
+
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+Capturing subpattern count = 0
+May match empty string
+Subject length lower bound = 0
+JIT compilation was not successful (no more memory)
+
+# Check that an infinite recursion loop is caught.
+
+/(?(R)a*(?1)|((?R))b)/
+    aaaabcde
+Failed: error -46: JIT stack limit reached
+
+/abcd/I
+Capturing subpattern count = 0
+First code unit = 'a'
+Last code unit = 'd'
+Subject length lower bound = 4
+JIT compilation was successful
+    abcd
+ 0: abcd (JIT)
+\= Expect no match
+    xyz
+No match (JIT)
+
+/(*NO_JIT)abcd/I
+Capturing subpattern count = 0
+First code unit = 'a'
+Last code unit = 'd'
+Subject length lower bound = 4
+JIT compilation was not successful
+    abcd
+ 0: abcd
+\= Expect no match
+    xyz
+No match
+
+/abcd/
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Partial match: ab (JIT)
+\= Expect no match
+    xyz
+No match (JIT)
+
+/abcd/jitfast
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Partial match: ab (JIT)
+\= Expect no match
+    xyz
+No match (JIT)
+
+/abcd/jit=1
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Partial match: ab
+    ab\=ph
+Partial match: ab
+\= Expect no match
+    xyz
+No match (JIT)
+    xyz\=ps
+No match
+
+/abcd/jit=1,jitfast
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Failed: error -45: bad JIT option
+    ab\=ph
+Failed: error -45: bad JIT option
+    xyz\=ps
+Failed: error -45: bad JIT option
+\= Expect no match
+    xyz
+No match (JIT)
+
+/abcd/jit=2
+    abcd
+ 0: abcd
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Partial match: ab
+\= Expect no match
+    xyz
+No match
+
+/abcd/jit=2,jitfast
+    abcd
+Failed: error -45: bad JIT option
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Failed: error -45: bad JIT option
+    xyz
+Failed: error -45: bad JIT option
+
+/abcd/jit=3
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Partial match: ab
+\= Expect no match
+    xyz
+No match (JIT)
+
+/abcd/jit=4
+    abcd
+ 0: abcd
+    ab\=ps
+Partial match: ab
+    ab\=ph
+Partial match: ab (JIT)
+\= Expect no match
+    xyz
+No match
+
+/abcd/jit=5
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Partial match: ab
+    ab\=ph
+Partial match: ab (JIT)
+\= Expect no match
+    xyz
+No match (JIT)
+
+/abcd/jit=6
+    abcd
+ 0: abcd
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Partial match: ab (JIT)
+\= Expect no match
+    xyz
+No match
+
+/abcd/jit=7
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Partial match: ab (JIT)
+\= Expect no match
+    xyz
+No match (JIT)
+
+/abcd/I,jit=2
+Capturing subpattern count = 0
+First code unit = 'a'
+Last code unit = 'd'
+Subject length lower bound = 4
+JIT compilation was successful
+
+/(*NO_START_OPT)a(*:m)b/mark
+\= Expect no match
+    a
+No match, mark = m (JIT)
+
+/^12345678abcd/m
+    12345678abcd
+ 0: 12345678abcd (JIT)
+    
+# Limits tests that give different output with JIT. 
+
+/(a+)*zz/I
+Capturing subpattern count = 1
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+JIT compilation was successful
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\=find_limits
+Minimum match limit = 2
+ 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazz (JIT)
+ 1: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+  aaaaaaaaaaaaaz\=find_limits
+Minimum match limit = 16383
+No match (JIT)
+
+!((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)!I
+Capturing subpattern count = 1
+May match empty string
+Subject length lower bound = 0
+JIT compilation was successful
+   /* this is a C style comment */\=find_limits
+Minimum match limit = 29
+ 0: /* this is a C style comment */ (JIT)
+ 1: /* this is a C style comment */
+
+/^(?>a)++/
+    aa\=find_limits
+Minimum match limit = 1
+ 0: aa (JIT)
+    aaaaaaaaa\=find_limits
+Minimum match limit = 1
+ 0: aaaaaaaaa (JIT)
+    
+/(a)(?1)++/
+    aa\=find_limits
+Minimum match limit = 1
+ 0: aa (JIT)
+ 1: a
+    aaaaaaaaa\=find_limits
+Minimum match limit = 1
+ 0: aaaaaaaaa (JIT)
+ 1: a
+
+/a(?:.)*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+Minimum match limit = 22
+ 0: abbbbbbbbbbbbbbbbbbbbba (JIT)
     
-#forbid_utf
-#pattern posix
+/a(?:.(*THEN))*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+Minimum match limit = 22
+ 0: abbbbbbbbbbbbbbbbbbbbba (JIT)
+
+/a(?:.(*THEN:ABC))*?a/ims
+    abbbbbbbbbbbbbbbbbbbbba\=find_limits
+Minimum match limit = 22
+ 0: abbbbbbbbbbbbbbbbbbbbba (JIT)
+
+/^(?>a+)(?>b+)(?>c+)(?>d+)(?>e+)/
+     aabbccddee\=find_limits
+Minimum match limit = 5
+ 0: aabbccddee (JIT)
+
+/^(?>(a+))(?>(b+))(?>(c+))(?>(d+))(?>(e+))/
+     aabbccddee\=find_limits
+Minimum match limit = 5
+ 0: aabbccddee (JIT)
+ 1: aa
+ 2: bb
+ 3: cc
+ 4: dd
+ 5: ee
+
+/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
+     aabbccddee\=find_limits
+Minimum match limit = 5
+ 0: aabbccddee (JIT)
+ 1: aa
+ 2: cc
+ 3: ee
 
-# Test invalid options
+/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/jitfast
+     aabbccddee\=find_limits
+Minimum match limit = 5
+ 0: aabbccddee (JIT)
+ 1: aa
+ 2: cc
+ 3: ee
+     aabbccddee\=jitstack=1
+ 0: aabbccddee (JIT)
+ 1: aa
+ 2: cc
+ 3: ee
 
-/abc/auto_callout
-** Ignored with POSIX interface: auto_callout
+/(a+)*zz/
+\= Expect no match
+    aaaaaaaaaaaaaz
+No match (JIT)
+\= Expect limit exceeded
+    aaaaaaaaaaaaaz\=match_limit=3000
+Failed: error -47: match limit exceeded
 
-/abc/
-   abc\=find_limits
-** Ignored with POSIX interface: find_limits
- 0: abc
+/(*LIMIT_MATCH=3000)(a+)*zz/I
+Capturing subpattern count = 1
+Match limit = 3000
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+JIT compilation was successful
+    aaaaaaaaaaaaaz
+Failed: error -47: match limit exceeded
+    aaaaaaaaaaaaaz\=match_limit=60000
+Failed: error -47: match limit exceeded
 
-/abc/
-  abc\=partial_hard
-** Ignored with POSIX interface: partial_hard
- 0: abc
+/(*LIMIT_MATCH=60000)(*LIMIT_MATCH=3000)(a+)*zz/I
+Capturing subpattern count = 1
+Match limit = 3000
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+JIT compilation was successful
+    aaaaaaaaaaaaaz
+Failed: error -47: match limit exceeded
 
-# Real tests
+/(*LIMIT_MATCH=60000)(a+)*zz/I
+Capturing subpattern count = 1
+Match limit = 60000
+Starting code units: a z 
+Last code unit = 'z'
+Subject length lower bound = 2
+JIT compilation was successful
+\= Expect no match
+    aaaaaaaaaaaaaz
+No match (JIT)
+\= Expect limit exceeded
+    aaaaaaaaaaaaaz\=match_limit=3000
+Failed: error -47: match limit exceeded
 
-/abc/
+# These three have infinitely nested recursions. 
+    
+/((?2))((?1))/
     abc
- 0: abc
-    *** Failers
-No match: POSIX code 17: match failed
+Failed: error -46: JIT stack limit reached
+
+/((?(R2)a+|(?1)b))/
+    aaaabcde
+Failed: error -46: JIT stack limit reached
 
-/^abc|def/
+/(?(R)a*(?1)|((?R))b)/
+    aaaabcde
+Failed: error -46: JIT stack limit reached
+    
+# Invalid options disable JIT when called via pcre2_match(), causing the
+# match to happen via the interpreter, but for fast JIT invalid options are
+# ignored, so an unanchored match happens.
+
+/abcd/
+    abcd\=anchored
+ 0: abcd
+\= Expect no match
+    fail abcd\=anchored 
+No match
+    
+/abcd/jitfast
+    abcd\=anchored 
+ 0: abcd (JIT)
+    succeed abcd\=anchored 
+ 0: abcd (JIT)
+    
+# Push/pop does not lose the JIT information, though jitverify applies only to
+# compilation, but serializing (save/load) discards JIT data completely.
+
+/^abc\Kdef/info,push
+** Applies only to compile when pattern is stacked with 'push': jitverify
+Capturing subpattern count = 0
+Compile options: <none>
+Overall options: anchored
+Subject length lower bound = 6
+JIT compilation was successful
+#pop jitverify
     abcdef
- 0: abc
-    abcdef\=notbol
- 0: def
+ 0: def (JIT)
 
-/.*((abc)$|(def))/
-    defabc
- 0: defabc
- 1: abc
- 2: abc
-    defabc\=noteol
+/^abc\Kdef/info,push
+** Applies only to compile when pattern is stacked with 'push': jitverify
+Capturing subpattern count = 0
+Compile options: <none>
+Overall options: anchored
+Subject length lower bound = 6
+JIT compilation was successful
+#save testsaved1
+#load testsaved1
+#pop jitverify
+    abcdef
  0: def
- 1: def
- 3: def
-
-/the quick brown fox/
-    the quick brown fox
- 0: the quick brown fox
-    *** Failers
-No match: POSIX code 17: match failed
-    The Quick Brown Fox
-No match: POSIX code 17: match failed
-
-/the quick brown fox/i
-    the quick brown fox
- 0: the quick brown fox
-    The Quick Brown Fox
- 0: The Quick Brown Fox
-
-/abc.def/
-    *** Failers
-No match: POSIX code 17: match failed
-    abc\ndef
-No match: POSIX code 17: match failed
-
-/abc$/
-    abc
- 0: abc
-    abc\n
- 0: abc
+    
+#load testsaved1
+#pop jit,jitverify
+    abcdef
+ 0: def (JIT)
+    
+# Test pattern compilation
 
-/(abc)\2/
-Failed: POSIX code 15: bad back reference at offset 7     
+/(?:a|b|c|d|e)(?R)/jit=1
 
-/(abc\1)/
-    abc
-No match: POSIX code 17: match failed
-
-/a*(b+)(z)(z)/
-    aaaabbbbzzzz
- 0: aaaabbbbzz
- 1: bbbb
- 2: z
- 3: z
-    aaaabbbbzzzz\=ovector=0
-Matched without capture
-    aaaabbbbzzzz\=ovector=1
- 0: aaaabbbbzz
-    aaaabbbbzzzz\=ovector=2
- 0: aaaabbbbzz
- 1: bbbb
-
-/ab.cd/
-    ab-cd
- 0: ab-cd
-    ab=cd
- 0: ab=cd
-    ** Failers
-No match: POSIX code 17: match failed
-    ab\ncd
-No match: POSIX code 17: match failed
-
-/ab.cd/s
-    ab-cd
- 0: ab-cd
-    ab=cd
- 0: ab=cd
-    ab\ncd
- 0: ab\x0acd
-
-/a(b)c/no_auto_capture
-    abc
-Matched with REG_NOSUB
+/(?:a|b|c|d|e)(?R)(?R)/jit=1
 
-/a(?P<name>b)c/no_auto_capture
-    abc
-Matched with REG_NOSUB
+/(a(?:a|b|c|d|e)b){8,16}/jit=1
 
-/a?|b?/
-    abc
- 0: a
-    ** Failers
- 0: 
-    ddd\=notempty
-No match: POSIX code 17: match failed
-
-/\w+A/
-   CDAAAAB
- 0: CDAAAA
-
-/\w+A/ungreedy
-   CDAAAAB
- 0: CDA
-   
-/\Biss\B/I,aftertext
-** Ignored with POSIX interface: info
-    Mississippi
- 0: iss
- 0+ issippi
-
-/abc/\
-Failed: POSIX code 9: bad escape sequence at offset 4     
-
-"(?(?C)"
-Failed: POSIX code 3: pattern error at offset 2     
-
-# End of testdata/testinput16  
+/(?:|a|){100}x/jit=1
+
+# These tests provoke recursion loops, which give a different error message
+# when JIT is used.
+
+/(?R)/I
+Capturing subpattern count = 0
+May match empty string
+Subject length lower bound = 0
+JIT compilation was successful
+    abcd
+Failed: error -46: JIT stack limit reached
+
+/(a|(?R))/I
+Capturing subpattern count = 1
+May match empty string
+Subject length lower bound = 0
+JIT compilation was successful
+    abcd
+ 0: a (JIT)
+ 1: a
+    defg 
+Failed: error -46: JIT stack limit reached
+
+/(ab|(bc|(de|(?R))))/I
+Capturing subpattern count = 3
+May match empty string
+Subject length lower bound = 0
+JIT compilation was successful
+    abcd
+ 0: ab (JIT)
+ 1: ab
+    fghi 
+Failed: error -46: JIT stack limit reached
+
+/(ab|(bc|(de|(?1))))/I
+Capturing subpattern count = 3
+May match empty string
+Subject length lower bound = 0
+JIT compilation was successful
+    abcd
+ 0: ab (JIT)
+ 1: ab
+    fghi 
+Failed: error -46: JIT stack limit reached
+
+/x(ab|(bc|(de|(?1)x)x)x)/I
+Capturing subpattern count = 3
+First code unit = 'x'
+Subject length lower bound = 3
+JIT compilation was successful
+    xab123
+ 0: xab (JIT)
+ 1: ab
+    xfghi 
+Failed: error -46: JIT stack limit reached
+
+/(?!\w)(?R)/
+    abcd
+Failed: error -46: JIT stack limit reached
+    =abc 
+Failed: error -46: JIT stack limit reached
+
+/(?=\w)(?R)/
+    =abc 
+Failed: error -46: JIT stack limit reached
+    abcd
+Failed: error -46: JIT stack limit reached
+
+/(?<!\w)(?R)/
+    abcd
+Failed: error -46: JIT stack limit reached
+
+/(?<=\w)(?R)/
+    abcd
+Failed: error -46: JIT stack limit reached
+
+/(a+|(?R)b)/
+    aaa
+ 0: aaa (JIT)
+ 1: aaa
+    bbb 
+Failed: error -46: JIT stack limit reached
+
+/[^\xff]((?1))/BI
+------------------------------------------------------------------
+        Bra
+        [^\x{ff}]
+        CBra 1
+        Recurse
+        Ket
+        Ket
+        End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Subject length lower bound = 1
+JIT compilation was successful
+    abcd
+Failed: error -46: JIT stack limit reached
+
+/(x(?1)){4}/
+
+/[axm]{7}/
+
+/(.|.)*?bx/
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabax
+Failed: error -47: match limit exceeded
+
+# End of testinput17
diff --git a/testdata/testoutput18 b/testdata/testoutput18
index 954b4b5..0a5ffff 100644
--- a/testdata/testoutput18
+++ b/testdata/testoutput18
@@ -1,20 +1,153 @@
 # This set of tests is run only with the 8-bit library. It tests the POSIX
-# interface with UTF/UCP support, which is supported only with the 8-bit
-# library. This test should not be run with JIT (which is not available for the
-# POSIX interface).
+# interface, which is supported only with the 8-bit library. This test should
+# not be run with JIT (which is not available for the POSIX interface).
     
+#forbid_utf
 #pattern posix
 
-/a\x{1234}b/utf
-    a\x{1234}b
- 0: a\x{1234}b
+# Test invalid options
 
-/\w/
-    +++\x{c2}
+/abc/auto_callout
+** Ignored with POSIX interface: auto_callout
+
+/abc/
+   abc\=find_limits
+** Ignored with POSIX interface: find_limits
+ 0: abc
+
+/abc/
+  abc\=partial_hard
+** Ignored with POSIX interface: partial_hard
+ 0: abc
+
+# Real tests
+
+/abc/
+    abc
+ 0: abc
+
+/^abc|def/
+    abcdef
+ 0: abc
+    abcdef\=notbol
+ 0: def
+
+/.*((abc)$|(def))/
+    defabc
+ 0: defabc
+ 1: abc
+ 2: abc
+    defabc\=noteol
+ 0: def
+ 1: def
+ 3: def
+
+/the quick brown fox/
+    the quick brown fox
+ 0: the quick brown fox
+\= Expect no match
+    The Quick Brown Fox
 No match: POSIX code 17: match failed
 
-/\w/ucp
-    +++\x{c2}
- 0: \xc2
-    
-# End of testdata/testinput17
+/the quick brown fox/i
+    the quick brown fox
+ 0: the quick brown fox
+    The Quick Brown Fox
+ 0: The Quick Brown Fox
+
+/(*LF)abc.def/
+\= Expect no match
+    abc\ndef
+No match: POSIX code 17: match failed
+
+/(*LF)abc$/
+    abc
+ 0: abc
+    abc\n
+ 0: abc
+
+/(abc)\2/
+Failed: POSIX code 15: bad back reference at offset 6     
+
+/(abc\1)/
+\= Expect no match
+    abc
+No match: POSIX code 17: match failed
+
+/a*(b+)(z)(z)/
+    aaaabbbbzzzz
+ 0: aaaabbbbzz
+ 1: bbbb
+ 2: z
+ 3: z
+    aaaabbbbzzzz\=ovector=0
+Matched without capture
+    aaaabbbbzzzz\=ovector=1
+ 0: aaaabbbbzz
+    aaaabbbbzzzz\=ovector=2
+ 0: aaaabbbbzz
+ 1: bbbb
+
+/(*ANY)ab.cd/
+    ab-cd
+ 0: ab-cd
+    ab=cd
+ 0: ab=cd
+\= Expect no match
+    ab\ncd
+No match: POSIX code 17: match failed
+
+/ab.cd/s
+    ab-cd
+ 0: ab-cd
+    ab=cd
+ 0: ab=cd
+    ab\ncd
+ 0: ab\x0acd
+
+/a(b)c/no_auto_capture
+    abc
+Matched with REG_NOSUB
+
+/a(?P<name>b)c/no_auto_capture
+    abc
+Matched with REG_NOSUB
+
+/a?|b?/
+    abc
+ 0: a
+\= Expect no match
+    ddd\=notempty
+No match: POSIX code 17: match failed
+
+/\w+A/
+   CDAAAAB
+ 0: CDAAAA
+
+/\w+A/ungreedy
+   CDAAAAB
+ 0: CDA
+   
+/\Biss\B/I,aftertext
+** Ignored with POSIX interface: info
+    Mississippi
+ 0: iss
+ 0+ issippi
+
+/abc/\
+Failed: POSIX code 9: bad escape sequence at offset 3     
+
+"(?(?C)"
+Failed: POSIX code 3: pattern error at offset 2     
+
+/abcd/substitute_extended
+** Ignored with POSIX interface: substitute_extended
+
+/\[A]{1000000}**/expand,regerror_buffsize=31
+Failed: POSIX code 4: ? * + invalid at offset 100000
+** regerror() message truncated
+
+/\[A]{1000000}**/expand,regerror_buffsize=32
+Failed: POSIX code 4: ? * + invalid at offset 1000001
+
+# End of testdata/testinput18
diff --git a/testdata/testoutput19 b/testdata/testoutput19
index 7f3aa0c..c4169ca 100644
--- a/testdata/testoutput19
+++ b/testdata/testoutput19
@@ -1,100 +1,21 @@
-# This set of tests exercises the serialization/deserialization functions in
-# the library. It does not use UTF or JIT.
-
-#forbid_utf
-
-# Compile several patterns, push them onto the stack, and then write them
-# all to a file.
-
-#pattern push
-
-/(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT))
-  (?(DEFINE)
-  (?<NAME_PAT>[a-z]+)
-  (?<ADDRESS_PAT>\d+)
-  )/x
-/^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i
-
-#save testsaved1
-
-# Do it again for some more patterns.
-
-/(*MARK:A)(*SKIP:B)(C|X)/mark
-** Ignored when compiled pattern is stacked with 'push': mark
-/(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames
-
-#save testsaved2
-#pattern -push
-
-# Reload the patterns, then pop them one by one and check them.
-
-#load testsaved1
-#load testsaved2
-
-#pop info
-Capturing subpattern count = 2
-Max back reference = 2
-Named capturing subpatterns:
-  n   1
-  n   2
-Options: dupnames
-Starting code units: b f 
-Subject length lower bound = 6
-    foofoo             
- 0: foofoo
- 1: foo
-    barbar
- 0: barbar
- 1: <unset>
- 2: bar
-    
-#pop mark
-    C
- 0: C
- 1: C
-MK: A
-    D 
-No match, mark = A
-    
-#pop
-    AmanaplanacanalPanama   
- 0: AmanaplanacanalPanama
- 1: <unset>
- 2: <unset>
- 3: AmanaplanacanalPanama
- 4: A
-
-#pop info
-Capturing subpattern count = 4
-Named capturing subpatterns:
-  ADDR          2
-  ADDRESS_PAT   4
-  NAME          1
-  NAME_PAT      3
-Options: extended
-Subject length lower bound = 3
-    metcalfe 33
- 0: metcalfe 33
- 1: metcalfe
- 2: 33
+# This set of tests is run only with the 8-bit library. It tests the POSIX
+# interface with UTF/UCP support, which is supported only with the 8-bit
+# library. This test should not be run with JIT (which is not available for the
+# POSIX interface).
     
-# Check for an error when different tables are used.
-
-/abc/push,tables=1
-/xyz/push,tables=2
-#save testsaved1
-Serialization failed: error -30: patterns do not all use the same character tables
+#pattern posix
 
-#pop
-    xyz
- 0: xyz
+/a\x{1234}b/utf
+    a\x{1234}b
+ 0: a\x{1234}b
 
-#pop
-    abc
- 0: abc
+/\w/
+\= Expect no match
+    +++\x{c2}
+No match: POSIX code 17: match failed
 
-#pop should give an error
-** Can't pop off an empty stack
-    pqr
-
-# End of testinput19 
+/\w/ucp
+    +++\x{c2}
+ 0: \xc2
+    
+# End of testdata/testinput19
diff --git a/testdata/testoutput2 b/testdata/testoutput2
index b628466..7178410 100644
--- a/testdata/testoutput2
+++ b/testdata/testoutput2
@@ -9,6 +9,7 @@
 # test 5. 
 
 #forbid_utf
+#newline_default lf any anycrlf
 
 # Test binary zeroes in the pattern
 
@@ -61,8 +62,7 @@ Subject length lower bound = 3
  0: abc
     abc\=anchored
  0: abc
-    *** Failers
-No match
+\= Expect no match
     defabc\=anchored
 No match
     ABC
@@ -77,8 +77,7 @@ Subject length lower bound = 3
  0: abc
     abc\=anchored
  0: abc
-    *** Failers
-No match
+\= Expect no match
     defabc
 No match
     defabc\=anchored
@@ -114,8 +113,7 @@ Overall options: anchored
 Subject length lower bound = 3
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     def\nabc
 No match
 
@@ -227,7 +225,7 @@ Starting code units: \x09 \x0a \x0b \x0c \x0d \x20 a b
 Subject length lower bound = 1
 
 /(ab\2)/
-Failed: error 115 at offset 6: reference to non-existent subpattern
+Failed: error 115 at offset 4: reference to non-existent subpattern
 
 /{4,5}abc/
 Failed: error 109 at offset 4: quantifier does not follow a repeatable item
@@ -319,15 +317,14 @@ Last code unit = 'c'
 Subject length lower bound = 3
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abc\n
 No match
     abc\ndef
 No match
 
 /(a)(b)(c)(d)(e)\6/
-Failed: error 115 at offset 17: reference to non-existent subpattern
+Failed: error 115 at offset 16: reference to non-existent subpattern
 
 /the quick brown fox/I
 Capturing subpattern count = 0
@@ -345,8 +342,7 @@ Options: anchored
 Subject length lower bound = 19
     the quick brown fox
  0: the quick brown fox
-    *** Failers
-No match
+\= Expect no match
     this is a line with the quick brown fox
 No match
 
@@ -428,8 +424,6 @@ Subject length lower bound = 2
 
 /(?U)<.*>/I
 Capturing subpattern count = 0
-Compile options: <none>
-Overall options: ungreedy
 First code unit = '<'
 Last code unit = '>'
 Subject length lower bound = 2
@@ -456,8 +450,6 @@ Subject length lower bound = 3
 
 /(?U)={3,}?/I
 Capturing subpattern count = 0
-Compile options: <none>
-Overall options: ungreedy
 First code unit = '='
 Last code unit = '='
 Subject length lower bound = 3
@@ -474,8 +466,7 @@ Subject length lower bound = 3
  0: foo
     catfoo
  0: foo
-    *** Failers
-No match
+\= Expect no match
     the barfoo
 No match
     and cattlefoo
@@ -492,8 +483,6 @@ Failed: error 125 at offset 12: lookbehind assertion is not fixed length
 
 /(?i)abc/I
 Capturing subpattern count = 0
-Compile options: <none>
-Overall options: caseless
 First code unit = 'a' (caseless)
 Last code unit = 'c' (caseless)
 Subject length lower bound = 3
@@ -506,7 +495,7 @@ Subject length lower bound = 1
 /(?i)^1234/I
 Capturing subpattern count = 0
 Compile options: <none>
-Overall options: anchored caseless
+Overall options: anchored
 Subject length lower bound = 4
 
 /(^b|(?i)^d)/I
@@ -519,7 +508,7 @@ Subject length lower bound = 1
 Capturing subpattern count = 0
 May match empty string
 Compile options: <none>
-Overall options: anchored dotall
+Overall options: anchored
 Subject length lower bound = 0
 
 /[abcd]/I
@@ -529,15 +518,11 @@ Subject length lower bound = 1
 
 /(?i)[abcd]/I
 Capturing subpattern count = 0
-Compile options: <none>
-Overall options: caseless
 Starting code units: A B C D a b c d 
 Subject length lower bound = 1
 
 /(?m)[xy]|(b|c)/I
 Capturing subpattern count = 1
-Compile options: <none>
-Overall options: multiline
 Starting code units: b c x y 
 Subject length lower bound = 1
 
@@ -549,8 +534,7 @@ Subject length lower bound = 1
 
 /(?i)(^a|^b)/Im
 Capturing subpattern count = 1
-Compile options: multiline
-Overall options: caseless multiline
+Options: multiline
 First code unit at start or follows newline
 Subject length lower bound = 1
 
@@ -615,8 +599,7 @@ Subject length lower bound = 1
  0: a
     a\n
  0: a
-    *** Failers
-No match
+\= Expect no match
     a\=noteol
 No match
     a\n\=noteol
@@ -633,8 +616,7 @@ Subject length lower bound = 1
  0: a
     a\n\=noteol
  0: a
-    *** Failers
-No match
+\= Expect no match
     a\=noteol
 No match
 
@@ -692,8 +674,7 @@ Last code unit = 'r'
 Subject length lower bound = 3
     foo\nbarbar
  0: bar
-    ***Failers
-No match
+\= Expect no match
     rhubarb
 No match
     barbell
@@ -711,8 +692,7 @@ Last code unit = 'r'
 Subject length lower bound = 3
     foo\nbarbar
  0: bar
-    ***Failers
-No match
+\= Expect no match
     rhubarb
 No match
     barbell
@@ -730,8 +710,7 @@ Subject length lower bound = 3
  0: abc
     def\nabc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     defabc
 No match
 
@@ -756,8 +735,7 @@ Subject length lower bound = 5
  0: -cart
     a donkey-cart race
  0: -cart
-    *** Failers
-No match
+\= Expect no match
     cart
 No match
     horse-and-cart
@@ -800,8 +778,7 @@ Subject length lower bound = 2
  0: ZZ
     BZZ
  0: ZZ
-    *** Failers
-No match
+\= Expect no match
     ZZ
 No match
     abXYZZ
@@ -821,16 +798,11 @@ Subject length lower bound = 3
  0: bar
     foobbar
  0: bar
-    *** Failers
-No match
+\= Expect no match
     fooabar
 No match
 
-/This one is here because Perl behaves differently; see also the following/I
-Capturing subpattern count = 0
-First code unit = 'T'
-Last code unit = 'g'
-Subject length lower bound = 73
+# This one is here because Perl behaves differently; see also the following.
 
 /^(a\1?){4}$/I
 Capturing subpattern count = 1
@@ -838,23 +810,21 @@ Max back reference = 1
 Compile options: <none>
 Overall options: anchored
 Subject length lower bound = 4
+\= Expect no match
     aaaa
 No match
     aaaaaa
 No match
     
-/Perl does not fail these two for the final subjects. Neither did PCRE until/
-/release 8.01. The problem is in backtracking into a subpattern that contains/
-No match
-/a recursive reference to itself. PCRE has now made these into atomic patterns./
-No match
+# Perl does not fail these two for the final subjects. Neither did PCRE until
+# release 8.01. The problem is in backtracking into a subpattern that contains
+# a recursive reference to itself. PCRE has now made these into atomic patterns.
 
 /^(xa|=?\1a){2}$/
     xa=xaa
  0: xa=xaa
  1: =xaa
-    ** Failers
-No match
+\= Expect no match
     xa=xaaa
 No match
 
@@ -862,16 +832,11 @@ No match
     xa=xaa
  0: xa=xaa
  1: =xaa
-    ** Failers
-No match
+\= Expect no match
     xa=xaaa
 No match
 
-/These are syntax tests from Perl 5.005/I
-Capturing subpattern count = 0
-First code unit = 'T'
-Last code unit = '5'
-Subject length lower bound = 38
+# These are syntax tests from Perl 5.005
 
 /a[b-a]/
 Failed: error 108 at offset 4: range out of order in character class
@@ -901,13 +866,13 @@ Failed: error 109 at offset 2: quantifier does not follow a repeatable item
 Failed: error 122 at offset 0: unmatched closing parenthesis
 
 /\1/
-Failed: error 115 at offset 2: reference to non-existent subpattern
+Failed: error 115 at offset 1: reference to non-existent subpattern
 
 /\2/
-Failed: error 115 at offset 2: reference to non-existent subpattern
+Failed: error 115 at offset 1: reference to non-existent subpattern
 
 /(a)|\2/
-Failed: error 115 at offset 6: reference to non-existent subpattern
+Failed: error 115 at offset 5: reference to non-existent subpattern
 
 /a[b-a]/Ii
 Failed: error 108 at offset 4: range out of order in character class
@@ -940,7 +905,7 @@ Failed: error 122 at offset 0: unmatched closing parenthesis
 Failed: error 114 at offset 4: missing closing parenthesis
 
 /(?<%)b/
-Failed: error 124 at offset 3: unrecognized character after (?<
+Failed: error 124 at offset 3: letter or underscore expected after (?< or (?'
 
 /a(?{)b/
 Failed: error 111 at offset 3: unrecognized character after (? or (?-
@@ -970,10 +935,10 @@ Failed: error 125 at offset 6: lookbehind assertion is not fixed length
 Failed: error 104 at offset 7: numbers out of order in {} quantifier
 
 /abc/\
-Failed: error 101 at offset 4: \ at end of pattern
+Failed: error 101 at offset 3: \ at end of pattern
 
 /abc/\i
-Failed: error 101 at offset 4: \ at end of pattern
+Failed: error 101 at offset 3: \ at end of pattern
 
 /(a)bc(d)/I
 Capturing subpattern count = 2
@@ -1170,7 +1135,7 @@ Subject length lower bound = 1
 ------------------------------------------------------------------
 Capturing subpattern count = 1
 Compile options: <none>
-Overall options: anchored dotall
+Overall options: anchored
 Subject length lower bound = 1
 
 /(?s:.*X|^B)/IB
@@ -1233,8 +1198,7 @@ Subject length lower bound = 3
  0+ issippi
  0: iss
  0+ ippi
-    *** Failers
-No match
+\= Expect no match
     Mississippi\=anchored
 No match
 
@@ -1341,6 +1305,17 @@ Subject length lower bound = 3
  0: ab\x0a
  0+ cd
 
+/^/gm,newline=any
+    a\rb\nc\r\nxyz\=aftertext
+ 0: 
+ 0+ a\x0db\x0ac\x0d\x0axyz
+ 0: 
+ 0+ b\x0ac\x0d\x0axyz
+ 0: 
+ 0+ c\x0d\x0axyz
+ 0: 
+ 0+ xyz
+
 /abc/I
 Capturing subpattern count = 0
 First code unit = 'a'
@@ -1584,8 +1559,7 @@ Subject length lower bound = 0
  0: ab
     \
  0: 
-    *** Failers
- 0: 
+\= Expect no match
     \=notempty
 No match
 
@@ -1599,8 +1573,7 @@ Subject length lower bound = 0
  0: 
     ab-c\=notempty
  0: -
-    *** Failers
- 0: 
+\= Expect no match
     abc\=notempty
 No match
 
@@ -1638,8 +1611,7 @@ Subject length lower bound = 2
  0: ()
     12(abcde(fsh)xyz(foo(bar))lmno)89
  0: (abcde(fsh)xyz(foo(bar))lmno)
-    *** Failers
-No match
+\= Expect no match
     abcd
 No match
     abcd)
@@ -1676,8 +1648,7 @@ Subject length lower bound = 3
  0: (c)
     ((ab))
  0: ((ab))
-    *** Failers
-No match
+\= Expect no match
     ()
 No match
 
@@ -2134,9 +2105,7 @@ Subject length lower bound = 2
     aB
  0: aB
  1: a
-    *** Failers
- 0: ai
- 1: a
+\= Expect no match
     Ab
 No match
     AB
@@ -2659,8 +2628,7 @@ Subject length lower bound = 2
  0: ab
     aB
  0: aB
-    *** Failers
-No match
+\= Expect no match
     AB
 No match
 
@@ -2684,8 +2652,7 @@ Subject length lower bound = 2
     aB
  0: aB
  1: aB
-    *** Failers
-No match
+\= Expect no match
     AB
 No match
 
@@ -2697,8 +2664,7 @@ No match
         End
 ------------------------------------------------------------------
 Capturing subpattern count = 0
-Compile options: extended
-Overall options: caseless extended
+Options: extended
 First code unit = 'a' (caseless)
 Last code unit = 'c' (caseless)
 Subject length lower bound = 3
@@ -2712,8 +2678,7 @@ Subject length lower bound = 3
         End
 ------------------------------------------------------------------
 Capturing subpattern count = 0
-Compile options: extended
-Overall options: caseless extended
+Options: extended
 First code unit = 'a' (caseless)
 Last code unit = 'c' (caseless)
 Subject length lower bound = 3
@@ -2831,8 +2796,7 @@ Capturing subpattern count = 0
 Starting code units: 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P 
   Q R S T U V W X Y Z _ a b c d e f g h i j k l m n o p q r s t u v w x y z 
 Subject length lower bound = 1
-    *** Failers
- 0: F
+\= Expect no match
     xxxxx
 No match
 
@@ -2917,8 +2881,7 @@ Subject length lower bound = 0
     now is the time for all good men to come to the aid of the party
  0: now is the time for all good men to come to the aid of the party
  1: party
-    *** Failers
-No match
+\= Expect no match
     this is not a line with only words and spaces!
 No match
 
@@ -2930,8 +2893,7 @@ Subject length lower bound = 2
  0: 12345a
  1: 12345
  2: a
-    *** Failers
-No match
+\= Expect no match
     12345+
 No match
 
@@ -2993,8 +2955,7 @@ Subject length lower bound = 3
     (abc(def)xyz)
  0: (abc(def)xyz)
  1: xyz
-    *** Failers
-No match
+\= Expect no match
     ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 No match
 
@@ -3062,8 +3023,6 @@ Subject length lower bound = 3
         End
 ------------------------------------------------------------------
 Capturing subpattern count = 0
-Compile options: <none>
-Overall options: ungreedy
 First code unit = 'x'
 Last code unit = 'b'
 Subject length lower bound = 3
@@ -3218,8 +3177,7 @@ Subject length lower bound = 2
  0: <abc<>def>
     <abc<>
  0: <>
-    *** Failers
-No match
+\= Expect no match
     <abc
 No match
 
@@ -3435,8 +3393,7 @@ Subject length lower bound = 1
  0: a
   xy\nabc
  0: a
-  *** Failers
-No match
+\= Expect no match
   xyabc
 No match
 
@@ -3448,8 +3405,6 @@ Subject length lower bound = 1
 
 /(?i)[ab]/I
 Capturing subpattern count = 0
-Compile options: <none>
-Overall options: caseless
 Starting code units: A B a b 
 Subject length lower bound = 1
 
@@ -3472,8 +3427,7 @@ Subject length lower bound = 6
 --->1234abcdef
   0     ^  ^       d
  0: abcdef
-    *** Failers
-No match
+\= Expect no match
     abcxyz
 No match
     abcxyzf
@@ -3505,8 +3459,7 @@ Subject length lower bound = 7
   1    ^           \d
   2    ^   ^       d
  0: 4abcdef
-    *** Failers
-No match
+\= Expect no match
     abcdef
 No match
 
@@ -3523,8 +3476,7 @@ Subject length lower bound = 7
   1    ^           \d
   2    ^   ^       d
  0: 4abcdef
-    *** Failers
-No match
+\= Expect no match
     abcdef
 No match
 
@@ -3548,8 +3500,6 @@ Capturing subpattern count = 0
 First code unit = 'a'
 Last code unit = 'f'
 Subject length lower bound = 6
-    *** Failers
-No match
     \x83\x0\x61bcdef
 --->\x83\x00abcdef
   0         ^  ^       d
@@ -3582,8 +3532,7 @@ Callout 1: last capture = 1
     123abcdefC-\=callout_none
  0: abcdef
  1: abc
-    *** Failers
-No match
+\= Expect no match
     123abcdef\=callout_fail=1
 --->123abcdef
   0    ^  ^       d
@@ -3609,10 +3558,6 @@ Subject length lower bound = 0
   1 ^     ^    )
  0: abcabc
  1: abc
-    *** Failers
---->*** Failers
-  0 ^               (abc(?C1))*
- 0: 
     abcabcabc\=callout_fail=1:3
 --->abcabcabc
   0 ^             (abc(?C1))*
@@ -3754,6 +3699,7 @@ Capturing subpattern count = 2
 First code unit = 'a'
 Last code unit = 'b'
 Subject length lower bound = 2
+\= Expect no match
     abbbbbccc\=callout_data=1
 --->abbbbbccc
   1 ^        ^    
@@ -3765,6 +3711,7 @@ Capturing subpattern count = 2
 First code unit = 'a'
 Last code unit = 'b'
 Subject length lower bound = 2
+\= Expect no match
     abbbbbccc\=callout_data=1
 --->abbbbbccc
   1 ^ ^           
@@ -3802,15 +3749,6 @@ Capturing subpattern count = 0
 Starting code units: a b 
 Subject length lower bound = 1
 
-/(?R)/I
-Failed: error 140 at offset 3: recursion could loop indefinitely
-
-/(a|(?R))/I
-Failed: error 140 at offset 6: recursion could loop indefinitely
-
-/(ab|(bc|(de|(?R))))/I
-Failed: error 140 at offset 15: recursion could loop indefinitely
-
 /x(ab|(bc|(de|(?R))))/I
 Capturing subpattern count = 3
 First code unit = 'x'
@@ -3837,17 +3775,10 @@ Subject length lower bound = 3
  1: xxab
  2: xxab
  3: xxab
-    *** Failers
-No match
+\= Expect no match
     xyab
 No match
 
-/(ab|(bc|(de|(?1))))/I
-Failed: error 140 at offset 15: recursion could loop indefinitely
-
-/x(ab|(bc|(de|(?1)x)x)x)/I
-Failed: error 140 at offset 16: recursion could loop indefinitely
-
 /^([^()]|\((?1)*\))*$/I
 Capturing subpattern count = 1
 May match empty string
@@ -3863,8 +3794,7 @@ Subject length lower bound = 0
     a(b(c))d
  0: a(b(c))d
  1: d
-    *** Failers)
-No match
+\= Expect no match)
     a(b(c)d
 No match
 
@@ -3933,8 +3863,7 @@ Subject length lower bound = 1
     -12
  0: -12
  1: -12
-    *** Failers
-No match
+\= Expect no match
     ((2+2)*-3)-7)
 No match
 
@@ -3942,7 +3871,7 @@ No match
 Capturing subpattern count = 2
 Compile options: <none>
 Overall options: anchored
-Subject length lower bound = 2
+Subject length lower bound = 3
     xyz
  0: xyz
  1: xyz
@@ -3951,8 +3880,7 @@ Subject length lower bound = 2
  0: xxyzxyzz
  1: xxyzxyzz
  2: xyzxyz
-    *** Failers
-No match
+\= Expect no match
     xxyzz
 No match
     xxyzxyzxyzz
@@ -3988,8 +3916,7 @@ Subject length lower bound = 2
  0: <>
  1: <>
  2: <>
-    *** Failers
-No match
+\= Expect no match
     <abc
 No match
 
@@ -4027,7 +3954,7 @@ Subject length lower bound = 3
 Capturing subpattern count = 2
 Compile options: <none>
 Overall options: anchored
-Subject length lower bound = 3
+Subject length lower bound = 2
     a=a
  0: a=a
  1: a
@@ -4158,8 +4085,7 @@ Subject length lower bound = 0
  2: <unset>
  3: Able was I ere I saw Elba
  4: A
-    *** Failers
-No match
+\= Expect no match
     The quick brown fox
 No match
 
@@ -4337,6 +4263,7 @@ Subject length lower bound = 2
 Callout data = 1
  0: ab
  1: ab
+\= Expect no match    
    aaabbb\=callout_data=-1
 --->aaabbb
   1 ^  ^       b
@@ -4445,8 +4372,7 @@ Subject length lower bound = 3
  1: 10,20,30,5,5,4,4,2,43,23,4234
  2: 10
  3: ,4234
-    *** Failers
-No match
+\= Expect no match
     []
 No match
 
@@ -4533,16 +4459,33 @@ Capturing subpattern count = 2
 May match empty string
 Subject length lower bound = 0
 
-/[ab]{1}+/IB
+/[ab]{1}+/B
 ------------------------------------------------------------------
         Bra
-        [ab]{1,1}+
+        [ab]
+        Ket
+        End
+------------------------------------------------------------------
+
+/()(?1){1}/B
+------------------------------------------------------------------
+        Bra
+        CBra 1
+        Ket
+        Recurse
+        Ket
+        End
+------------------------------------------------------------------
+
+/()(?1)/B
+------------------------------------------------------------------
+        Bra
+        CBra 1
+        Ket
+        Recurse
         Ket
         End
 ------------------------------------------------------------------
-Capturing subpattern count = 0
-Starting code units: a b 
-Subject length lower bound = 1
 
 /((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/Ii
 Capturing subpattern count = 3
@@ -4640,6 +4583,7 @@ Subject length lower bound = 5
  +4 ^   ^     e
  +5 ^    ^    
  0: abcde
+\= Expect no match
   abcdfe
 --->abcdfe
  +0 ^          a
@@ -4763,6 +4707,7 @@ Subject length lower bound = 2
  +2 ^   ^     b
  +3 ^    ^    
  0: aaaab
+\= Expect no match 
   aaaacb
 --->aaaacb
  +0 ^          a+
@@ -4830,8 +4775,7 @@ Subject length lower bound = 4
 +10 ^   ^    
  0: defx
  1: def
-  ** Failers 
-No match
+\= Expect no match 
   abcdefzx
 --->abcdefzx
  +0 ^            (abc|def)
@@ -4905,8 +4849,7 @@ Subject length lower bound = 4
 +10 ^   ^    
  0: defx
  1: def
-  ** Failers 
-No match
+\= Expect no match 
   abcdefzx
 --->abcdefzx
  +0 ^            (abc|def)
@@ -5022,6 +4965,7 @@ Capturing subpattern count = 1
 Options: auto_callout
 Starting code units: a b x 
 Subject length lower bound = 2
+\= Expect no match 
     Note: that { does NOT introduce a quantifier
 --->Note: that { does NOT introduce a quantifier
  +0         ^                                        ([ab]{,4}c|xy)
@@ -5071,6 +5015,7 @@ Capturing subpattern count = 1
 Options: auto_callout
 Starting code units: a b x 
 Subject length lower bound = 2
+\= Expect no match 
     Note: that { does NOT introduce a quantifier
 --->Note: that { does NOT introduce a quantifier
  +0         ^                                        ([ab]{,4}c|xy)
@@ -5212,7 +5157,7 @@ Max lookbehind = 1
 May match empty string
 Options: dotall
 Subject length lower bound = 0
-  ab cd\=offset=1
+  ab cd\=startoffset=1
  0:  cd
 
 /(?!.bcd).*/I
@@ -5237,8 +5182,7 @@ Partial match: abcd
  0: abcde
     the quick brown abc\=ps
 Partial match: abc
-    ** Failers\=ps
-No match
+\= Expect no match\=ps
     the quick brown abxyz fox\=ps
 No match
 
@@ -5279,8 +5223,7 @@ Partial match: 02/
 Partial match: 02/0
     02/1\=ps
 Partial match: 02/1
-    ** Failers\=ps
-No match
+\= Expect no match\=ps
     \=ps
 No match
     123\=ps
@@ -5360,8 +5303,7 @@ Partial match: 1234
 Partial match: 12345
     12345X
  0: 12345X
-    *** Failers
-No match
+\= Expect no match
     1X
 No match
     123456\=ps
@@ -5400,8 +5342,7 @@ Last code unit = 'k'
 Subject length lower bound = 10
     this is a line\nbreak
  0: line\x0abreak
-    ** Failers
-No match
+\= Expect no match
     line one\nthis is a line\nbreak in the second line
 No match
 
@@ -5414,8 +5355,7 @@ Last code unit = 'k'
 Subject length lower bound = 10
     this is a line\nbreak
  0: line\x0abreak
-    ** Failers
-No match
+\= Expect no match
     line one\nthis is a line\nbreak in the second line
 No match
 
@@ -5426,8 +5366,7 @@ Last code unit = 'd'
 Subject length lower bound = 4
     AbCd
  0: AbCd
-    ** Failers
-No match
+\= Expect no match
     abcd
 No match
 
@@ -5733,8 +5672,6 @@ Subject length lower bound = 2
  2: <unset>
  3: a2
   C a2 (2) A (non-unique)
-    ** Failers
-No match
     a1b\=copy=Z,copy=A
  0: a1
  1: a1
@@ -5819,8 +5756,6 @@ Subject length lower bound = 2
  2: <unset>
  3: a2
   G a2 (2) A (non-unique)
-    ** Failers
-No match
     a1b\=get=Z,get=A
  0: a1
  1: a1
@@ -5882,7 +5817,7 @@ Named capturing subpatterns:
   A   2
   A   3
 Compile options: <none>
-Overall options: anchored dupnames
+Overall options: anchored
 Duplicate name status changes
 Subject length lower bound = 2
     a1b\=copy=A
@@ -5900,14 +5835,9 @@ Subject length lower bound = 2
 /^(?P<A>a) (?J:(?P<B>b)(?P<B>c)) (?P<A>d)/I
 Failed: error 143 at offset 37: two named subpatterns have the same name (PCRE2_DUPNAMES not set)
 
-/ In this next test, J is not set at the outer level; consequently it isn't
-set in the pattern's options; consequently pcre_get_named_substring() produces
-a random value. /Ix
-Capturing subpattern count = 1
-Options: extended
-First code unit = 'I'
-Last code unit = 'e'
-Subject length lower bound = 141
+# In this next test, J is not set at the outer level; consequently it isn't set
+# in the pattern's options; consequently pcre2_substring_get_byname() produces
+# a random value.
 
 /^(?P<A>a) (?J:(?P<B>b)(?P<B>c)) (?P<C>d)/I
 Capturing subpattern count = 4
@@ -5943,8 +5873,7 @@ Subject length lower bound = 1
  1: a
     bc
  0: b
-    ** Failers
-No match
+\= Expect no match
     abc
 No match
 
@@ -6043,8 +5972,7 @@ Subject length lower bound = 3
  0: abc
     xyz\r\nabc
  0: abc
-    ** Failers
-No match
+\= Expect no match
     xyz\rabc
 No match
     xyzabc\r
@@ -6065,8 +5993,7 @@ Last code unit = 'c'
 Subject length lower bound = 3
     xyz\r\nabclf>
  0: abc
-    ** Failers
-No match
+\= Expect no match
     xyz\nabclf
 No match
     xyz\rabclf
@@ -6081,8 +6008,7 @@ Last code unit = 'c'
 Subject length lower bound = 3
     xyz\rabc
  0: abc
-    ** Failers
-No match
+\= Expect no match
     xyz\nabc
 No match
     xyz\r\nabc
@@ -6376,8 +6302,7 @@ Last code unit = 'A'
 Subject length lower bound = 3
     aaaA5
  0: aaaA5
-    ** Failers
-No match
+\= Expect no match
     aaaa5
 No match
 
@@ -7091,8 +7016,7 @@ Failed: error 141 at offset 3: unrecognized character after (?P
     bXbX
  0: bX
  1: X
-    ** Failers
-No match
+\= Expect no match
     aXaX
 No match
     aXbX
@@ -7138,8 +7062,7 @@ Failed: error 115 at offset 8: reference to non-existent subpattern
  0: bx
  1: bx
  2: x
-    ** Failers
-No match
+\= Expect no match
     axby
 No match
 
@@ -7159,8 +7082,7 @@ No match
  1: Xy
  2: X
  3: y
-    ** Failers
-No match
+\= Expect no match
     x
 No match
 
@@ -7308,8 +7230,7 @@ Subject length lower bound = 0
  2: <unset>
  3: Able was I ere I saw Elba
  4: A
-    *** Failers
-No match
+\= Expect no match
     The quick brown fox
 No match
 
@@ -7342,8 +7263,7 @@ Subject length lower bound = 2
  0: adaa
  1: a
  2: d
-    ** Failers
-No match
+\= Expect no match
     addd
 No match
     adbb
@@ -7358,8 +7278,7 @@ No match
  0: bdab
  1: b
  2: d
-    ** Failers
-No match
+\= Expect no match
     bddd
 No match
 
@@ -7398,39 +7317,36 @@ Last code unit = 'z'
 Subject length lower bound = 3
 
 /(a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\=ovector=0
-No match
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4\=ovector=0
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
  1: 
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\=ovector=0
+No match
 
 /^a.b/newline=lf
     a\rb
  0: a\x0db
-    ** Failers
-No match
+\= Expect no match
     a\nb
 No match
 
 /^a.b/newline=cr
     a\nb
  0: a\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\rb
 No match
 
 /^a.b/newline=anycrlf
     a\x85b
  0: a\x85b
-    ** Failers
-No match
+\= Expect no match
     a\rb
 No match
 
 /^a.b/newline=any
-    ** Failers
-No match
+\= Expect no match
     a\nb
 No match
     a\rb
@@ -7471,8 +7387,7 @@ No match
  0: a\x0cb
     a\x85b
  0: a\x85b
-    ** Failers
-No match
+\= Expect no match
     a\n\rb
 No match
 
@@ -7513,8 +7428,7 @@ No match
  0: a\x0a\x0db
     a\n\r\x85\x0cb
  0: a\x0a\x0d\x85\x0cb
-    ** Failers
-No match
+\= Expect no match
     ab
 No match
 
@@ -7533,8 +7447,7 @@ No match
  0: a\x0a\x0d\x0a\x0db
     a\n\n\r\nb
  0: a\x0a\x0a\x0d\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\n\n\n\rb
 No match
     a\r
@@ -7584,17 +7497,19 @@ Subject length lower bound = 3
  1: x
 
 /(abc)(?i:(?1))/
-   defabcabcxyz
+    defabcabcxyz
  0: abcabc
  1: abc
-   DEFabcABCXYZ
+\= Expect no match
+    DEFabcABCXYZ
 No match
 
 /(abc)(?:(?i)(?1))/
-   defabcabcxyz
+    defabcabcxyz
  0: abcabc
  1: abc
-   DEFabcABCXYZ
+\= Expect no match
+    DEFabcABCXYZ
 No match
 
 /^(a)\g-2/
@@ -7615,16 +7530,14 @@ Failed: error 115 at offset 9: reference to non-existent subpattern
 /^a.b/newline=lf
     a\rb
  0: a\x0db
-    *** Failers
-No match
+\= Expect no match
     a\nb
 No match
 
 /.+foo/
     afoo
  0: afoo
-    ** Failers
-No match
+\= Expect no match
     \r\nfoo
 No match
     \nfoo
@@ -7635,16 +7548,14 @@ No match
  0: afoo
     \nfoo
  0: \x0afoo
-    ** Failers
-No match
+\= Expect no match
     \r\nfoo
 No match
 
 /.+foo/newline=any
     afoo
  0: afoo
-    ** Failers
-No match
+\= Expect no match
     \nfoo
 No match
     \r\nfoo
@@ -7663,8 +7574,7 @@ No match
  0: 
     abc\n\rxyz  
  0: 
-    ** Failers 
-No match
+\= Expect no match 
     abc\r\nxyz
 No match
 
@@ -7699,8 +7609,7 @@ No match
 /^X/m
     XABC
  0: X
-    ** Failers 
-No match
+\= Expect no match 
     XABC\=notbol
 No match
 
@@ -7734,8 +7643,7 @@ No match
     xyabcabc
  0: xyabcabc
  1: abc
-    ** Failers
-No match
+\= Expect no match
     xyabc  
 No match
     
@@ -7773,8 +7681,7 @@ Failed: error 115 at offset 5: reference to non-existent subpattern
  1: abc
     Y
  0: Y
-    ** Failers
-No match
+\= Expect no match
     abcY   
 No match
     
@@ -7804,8 +7711,7 @@ No match
  0: YabcXabcXabc
  1: Xabc
  2: abc
-    ** Failers
-No match
+\= Expect no match
     XabcXabc  
 No match
 
@@ -7855,8 +7761,7 @@ Failed: error 115 at offset 7: reference to non-existent subpattern
     bon-bon 
  0: bon-bon
  1: bon
-    ** Failers
-No match
+\= Expect no match
     tom-bon  
 No match
 
@@ -7962,8 +7867,7 @@ Failed: error 142 at offset 4: syntax error in subpattern name (missing terminat
         Ket
         End
 ------------------------------------------------------------------
-    ** Failers
-No match
+\= Expect no match
     XXXX
 No match
     
@@ -8191,6 +8095,7 @@ Failed: error 106 at offset 10: missing terminating ] for character class
 ------------------------------------------------------------------
 
 /^a+(*FAIL)/auto_callout
+\= Expect no match
     aaaaaa
 --->aaaaaa
  +0 ^          ^
@@ -8204,6 +8109,7 @@ Failed: error 106 at offset 10: missing terminating ] for character class
 No match
     
 /a+b?c+(*FAIL)/auto_callout
+\= Expect no match
     aaabccc
 --->aaabccc
  +0 ^           a+
@@ -8227,6 +8133,7 @@ No match
 No match
 
 /a+b?(*PRUNE)c+(*FAIL)/auto_callout
+\= Expect no match
     aaabccc
 --->aaabccc
  +0 ^           a+
@@ -8253,6 +8160,7 @@ No match
 No match
 
 /a+b?(*COMMIT)c+(*FAIL)/auto_callout
+\= Expect no match
     aaabccc
 --->aaabccc
  +0 ^           a+
@@ -8265,6 +8173,7 @@ No match
 No match
     
 /a+b?(*SKIP)c+(*FAIL)/auto_callout
+\= Expect no match
     aaabcccaaabccc
 --->aaabcccaaabccc
  +0 ^                  a+
@@ -8284,6 +8193,7 @@ No match
 No match
 
 /a+b?(*THEN)c+(*FAIL)/auto_callout
+\= Expect no match
     aaabccc
 --->aaabccc
  +0 ^           a+
@@ -8330,6 +8240,7 @@ Failed: error 161 at offset 11: number is too big
 Failed: error 115 at offset 3: reference to non-existent subpattern
 
 /.+A/newline=crlf
+\= Expect no match
     \r\nA
 No match
     
@@ -8352,24 +8263,21 @@ Failed: error 160 at offset 5: (*VERB) not recognized or malformed
 /(*CR)a.b/
     a\nb
  0: a\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\rb  
 No match
 
 /(*CR)a.b/newline=lf
     a\nb
  0: a\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\rb  
 No match
 
 /(*LF)a.b/newline=CRLF
     a\rb
  0: a\x0db
-    ** Failers
-No match
+\= Expect no match
     a\nb  
 No match
 
@@ -8378,14 +8286,12 @@ No match
  0: a\x0db
     a\nb  
  0: a\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\r\nb  
 No match
 
 /(*ANYCRLF)a.b/newline=CR
-    ** Failers
-No match
+\= Expect no match
     a\rb
 No match
     a\nb  
@@ -8394,8 +8300,7 @@ No match
 No match
 
 /(*ANY)a.b/newline=cr
-    ** Failers
-No match
+\= Expect no match
     a\rb
 No match
     a\nb  
@@ -8438,8 +8343,7 @@ Subject length lower bound = 3
  0: a\x0ab
     a\r\nb
  0: a\x0d\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\x85b
 No match
     a\x0bb     
@@ -8474,8 +8378,7 @@ Subject length lower bound = 2
  0: a\x0ab
     a\r\nb
  0: a\x0d\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\x85b
 No match
     a\x0bb     
@@ -8510,8 +8413,7 @@ Subject length lower bound = 4
  0: a\x0a\x0d\x0db
     a\r\n\r\n\r\n\r\nb
  0: a\x0d\x0a\x0d\x0a\x0d\x0a\x0d\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\x85\x85b
 No match
     a\x0b\x0bb     
@@ -8533,8 +8435,7 @@ Subject length lower bound = 4
  0: a\x85\x85b
     a\x0b\x0bb     
  0: a\x0b\x0bb
-    ** Failers 
-No match
+\= Expect no match 
     a\r\r\r\r\rb 
 No match
  
@@ -8626,10 +8527,10 @@ Failed: error 162 at offset 3: subpattern name expected
 Failed: error 162 at offset 3: subpattern name expected
 
 /\k/
-Failed: error 169 at offset 2: \k is not followed by a braced, angle-bracketed, or quoted name
+Failed: error 169 at offset 1: \k is not followed by a braced, angle-bracketed, or quoted name
 
 /\kabc/
-Failed: error 169 at offset 5: \k is not followed by a braced, angle-bracketed, or quoted name
+Failed: error 169 at offset 1: \k is not followed by a braced, angle-bracketed, or quoted name
 
 /(?P=)/
 Failed: error 162 at offset 4: subpattern name expected
@@ -8637,18 +8538,6 @@ Failed: error 162 at offset 4: subpattern name expected
 /(?P>)/
 Failed: error 162 at offset 4: subpattern name expected
 
-/(?!\w)(?R)/
-Failed: error 140 at offset 9: recursion could loop indefinitely
-
-/(?=\w)(?R)/
-Failed: error 140 at offset 9: recursion could loop indefinitely
-
-/(?<!\w)(?R)/
-Failed: error 140 at offset 10: recursion could loop indefinitely
-
-/(?<=\w)(?R)/
-Failed: error 140 at offset 10: recursion could loop indefinitely
-
 /[[:foo:]]/
 Failed: error 130 at offset 3: unknown POSIX class name
 
@@ -8677,19 +8566,19 @@ Failed: error 130 at offset 6: unknown POSIX class name
 Failed: error 130 at offset 3: unknown POSIX class name
 
 /(^(a|b\g<-1'c))/
-Failed: error 157 at offset 15: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number
+Failed: error 157 at offset 8: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number
 
 /^(?+1)(?<a>x|y){0}z/
     xzxx
  0: xz
     yzyy 
  0: yz
-    ** Failers
-No match
+\= Expect no match
     xxz  
 No match
 
 /(\3)(\1)(a)/
+\= Expect no match
     cat
 No match
 
@@ -8720,8 +8609,7 @@ Failed: error 115 at offset 3: reference to non-existent subpattern
     abcbabc
  0: abcbabc
  1: abc
-    ** Failers 
-No match
+\= Expect no match 
     abcXabc
 No match
 
@@ -8729,8 +8617,7 @@ No match
     abcXabc
  0: abcXabc
  1: abc
-    ** Failers 
-No match
+\= Expect no match 
     abcbabc
 No match
 
@@ -8755,20 +8642,17 @@ Failed: error 106 at offset 4: missing terminating ] for character class
 Failed: error 106 at offset 5: missing terminating ] for character class
 
 /a[]b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
-No match
+\= Expect no match
     ab
 No match
 
 /a[]+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
-No match
+\= Expect no match
     ab 
 No match
 
 /a[]*+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
-No match
+\= Expect no match
     ab 
 No match
 
@@ -8777,8 +8661,7 @@ No match
  0: aXb
     a\nb 
  0: a\x0ab
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
     
@@ -8787,8 +8670,7 @@ No match
  0: aXb
     a\nX\nXb 
  0: a\x0aX\x0aXb
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
 
@@ -8887,8 +8769,7 @@ Subject length lower bound = 1
  +2    ^ ^     z
  +3    ^  ^    
  0: xyz
-  ** Failers 
-No match
+\= Expect no match 
   abc
 No match
   abcxypqr  
@@ -8905,20 +8786,7 @@ No match
  +2    ^ ^     z
  +3    ^  ^    
  0: xyz
-  ** Failers 
---->** Failers
- +0 ^              x
- +0  ^             x
- +0   ^            x
- +0    ^           x
- +0     ^          x
- +0      ^         x
- +0       ^        x
- +0        ^       x
- +0         ^      x
- +0          ^     x
- +0           ^    x
-No match
+\= Expect no match 
   abc
 --->abc
  +0 ^       x
@@ -8956,7 +8824,7 @@ No match
 /(*NO_AUTO_POSSESS)a+b/B
 ------------------------------------------------------------------
         Bra
-        a++
+        a+
         b
         Ket
         End
@@ -9248,12 +9116,14 @@ Partial match: 123999
     ^^^^
 
 /Z(*F)/
+\= Expect no match
     Z\=ps
 No match
     ZA\=ps
 No match
     
 /Z(?!)/
+\= Expect no match
     Z\=ps
 No match
     ZA\=ps
@@ -9405,8 +9275,7 @@ Partial match: +ab
  0: abc
     ^^^
  0+ def
-    ** Failers
-No match
+\= Expect no match
     abcdef\=notempty
 No match
     xyzabcdef\=notempty
@@ -9420,8 +9289,7 @@ No match
  0: abc
     ^^^
  0+ def
-    ** Failers 
-No match
+\= Expect no match 
     abcdef\=notempty
 No match
 
@@ -9441,9 +9309,7 @@ No match
     xyz\=notempty_atstart
  0: 
  0+ yz
-    ** Failers 
- 0: 
- 0+ ** Failers
+\= Expect no match 
     xyz\=notempty
 No match
 
@@ -9454,9 +9320,7 @@ No match
     xyzabc
  0: 
  0+ xyzabc
-    ** Failers 
- 0: 
- 0+ ** Failers
+\= Expect no match 
     xyzabc\=notempty
 No match
     xyzabc\=notempty_atstart
@@ -9566,8 +9430,7 @@ No match
     XaaX
  0: aa
  1: a
-    ** Failers 
-No match
+\= Expect no match 
     XAAX 
 No match
 
@@ -9778,8 +9641,7 @@ Subject length lower bound = 3
  4: "
  5: <unset>
  6: "
-    ** Failers 
-No match
+\= Expect no match 
     b"11111
 No match
     a"11111 
@@ -9833,8 +9695,7 @@ Subject length lower bound = 2
     eX
  0: eX
  1: e
-    ** Failers
-No match
+\= Expect no match
     abcdY
 No match
     ey     
@@ -9879,8 +9740,7 @@ Subject length lower bound = 4
  2: b
  3: c
  4: dd
-    ** Failers
-No match
+\= Expect no match
     abcdde  
 No match
 
@@ -9936,8 +9796,7 @@ Partial match: abcde
     ABXABD  
  0: ABD
  1: B
-    ** Failers 
-No match
+\= Expect no match 
     ABX 
 No match
     BAXBAD  
@@ -9967,6 +9826,7 @@ Capturing subpattern count = 3
 Max back reference = 3
 Last code unit = 'a'
 Subject length lower bound = 3
+\= Expect no match
     cat
 No match
 
@@ -10004,8 +9864,7 @@ Subject length lower bound = 1
  0: Ab
     CcC 
  0: c
-    ** Failers
-No match
+\= Expect no match
     XABX   
 No match
 
@@ -10105,8 +9964,8 @@ No match
         End
 ------------------------------------------------------------------
 
-/ -- This one is here because Perl gives the match as "b" rather than "ab". I
-     believe this to be a Perl bug. --/
+# This one is here because Perl gives the match as "b" rather than "ab". I
+# believe this to be a Perl bug.
       
 /(?>a\Kb)z|(ab)/
     ab\=startchar 
@@ -10114,7 +9973,14 @@ No match
  1: ab
 
 /(?P<L1>(?P<L2>0|)|(?P>L2)(?P>L1))/
-Failed: error 140 at offset 31: recursion could loop indefinitely
+    abcd
+ 0: 
+ 1: 
+ 2: 
+    0abc 
+ 0: 0
+ 1: 0
+ 2: 0
 
 /abc(*MARK:)pqr/
 Failed: error 166 at offset 10: (*MARK) must have an argument
@@ -10129,6 +9995,7 @@ Failed: error 159 at offset 13: an argument is not allowed for (*ACCEPT), (*FAIL
 # bug because replacing the B in the pattern by (B|D) does make it fail.
 
 /A(*COMMIT)B/aftertext,mark
+\= Expect no match
     ACABX
 No match
 
@@ -10140,6 +10007,7 @@ No match
  0: AC
 
 /A(*PRUNE)B|A(*PRUNE)C/mark
+\= Expect no match
     AC
 No match
     
@@ -10147,8 +10015,7 @@ No match
 # though PCRE2 does.
 
 /^A(*:A)B|^X(*:A)Y/mark
-    ** Failers
-No match
+\= Expect no match
     XAQQ
 No match, mark = A
     
@@ -10161,20 +10028,22 @@ No match, mark = A
  0: ABC
     
 /(*COMMIT)ABC/no_start_optimize
-    ** Failers
-No match
+\= Expect no match
     DEFGABC
 No match
     
 /^(ab (c+(*THEN)cd) | xyz)/x
+\= Expect no match
     abcccd  
 No match
 
 /^(ab (c+(*PRUNE)cd) | xyz)/x
+\= Expect no match
     abcccd  
 No match
 
 /^(ab (c+(*FAIL)cd) | xyz)/x
+\= Expect no match
     abcccd  
 No match
     
@@ -10211,8 +10080,7 @@ No match
 ------------------------------------------------------------------
     ACBD
  0: ACBD
-    *** Failers
-No match
+\= Expect no match
     A\nB
 No match
     ACB\n   
@@ -10232,8 +10100,7 @@ No match
  0: ACBD
     ACB\n 
  0: ACB\x0a
-    *** Failers
-No match
+\= Expect no match
     A\nB  
 No match
   
@@ -10242,8 +10109,7 @@ No match
  0: A\x0aB
     A\rB
  0: A\x0dB
-    ** Failers
-No match
+\= Expect no match
     A\r\nB    
 No match
 
@@ -10354,6 +10220,7 @@ No match
         Ket
         End
 ------------------------------------------------------------------
+\= Expect no match
     X\x0d\x0a
 No match
 
@@ -10409,26 +10276,30 @@ Partial match: abc
 Partial match: abc
 
 /abc\B/
-    abc
-No match
     abc\=ps
 Partial match: abc
     abc\=ph
 Partial match: abc
+\= Expect no match
+    abc
+No match
 
 /.+/
+\= Bad offsets
+    abc\=offset=4
+Failed: error -33: bad offset value
+    abc\=offset=-4 
+** Invalid value in 'offset=-4'
+\= Valid data
     abc\=offset=0
  0: abc
     abc\=offset=1
  0: bc
     abc\=offset=2
  0: c
+\= Expect no match
     abc\=offset=3
 No match
-    abc\=offset=4
-Failed: error -33: bad offset value
-    abc\=offset=-4 
-** Invalid value in 'offset=-4'
 
 /^\cģ/
 Failed: error 168 at offset 3: \c must be followed by a printable ASCII character
@@ -10551,8 +10422,7 @@ Failed: error 115 at offset 15: reference to non-existent subpattern
  0: aaaaX
  1: a
  2: X
-    ** Failers 
-No match
+\= Expect no match 
     aaaa
 No match
 
@@ -10560,8 +10430,7 @@ No match
     aaaaX
  0: aaaaX
  1: X
-    ** Failers 
-No match
+\= Expect no match 
     aaaa
 No match
 
@@ -10745,8 +10614,7 @@ Subject length lower bound = 1
 /(?1)(?:(b(*ACCEPT))){0}c/
     bc
  0: bc
-    ** Failers 
-No match
+\= Expect no match 
     b 
 No match
 
@@ -10757,6 +10625,7 @@ No match
  0: c
 
 /^.*?(?(?=a)a|b(*THEN)c)/
+\= Expect no match 
     ba
 No match
 
@@ -10765,14 +10634,17 @@ No match
  0: ba
 
 /^.*?(?(?=a)a(*THEN)b|c)/
+\= Expect no match 
     ac
 No match
 
 /^.*?(?(?=a)a(*THEN)b)c/
+\= Expect no match 
     ac
 No match
 
 /^.*?(a(*THEN)b)c/
+\= Expect no match 
     aabc
 No match
     
@@ -10798,10 +10670,12 @@ No match
  0: C
  1: C
 MK: A
+\= Expect no match 
     D
 No match, mark = A
      
 /(*:A)A+(*SKIP:A)(B|Z)/mark
+\= Expect no match 
     AAAC
 No match, mark = A
 
@@ -10822,6 +10696,7 @@ No match, mark = A
 /(?>(*ACCEPT)b)c/
     c
  0: 
+\= Expect no match 
     c\=notempty
 No match
 
@@ -11087,9 +10962,6 @@ Matched, but too many substrings
         End
 ------------------------------------------------------------------
 
-/(a+|(?R)b)/
-Failed: error 140 at offset 7: recursion could loop indefinitely
-
 /^(a(*:A)(d|e(*:B))z|aeq)/auto_callout
     adz
 --->adz
@@ -11149,6 +11021,7 @@ Latest Mark: B
  1: aeq
 
 /.(*F)/
+\= Expect no match
     abc\=ph
 No match
 
@@ -11181,14 +11054,15 @@ Subject length lower bound = 0
  0: x
 
 'a*(*ACCEPT)b'aftertext
-    \=notempty_atstart
-No match
     abc\=notempty_atstart
  0: a
  0+ bc
     bbb\=notempty_atstart
  0: 
  0+ bb
+\= Expect no match
+    \=notempty_atstart
+No match
 
 /(*ACCEPT)a/I,aftertext
 Capturing subpattern count = 0
@@ -11224,8 +11098,7 @@ Subject length lower bound = 0
     aaaazzzzb
  0: aaaazzzzb
  1: zzzz
-    ** Failers
-No match
+\= Expect no match
     aazz  
 No match
 
@@ -11241,6 +11114,7 @@ No match
  1: c
     
 /(.)((?(1)c|a)|a(?2))/
+\= Expect no match
     baa  
 No match
 
@@ -11274,8 +11148,7 @@ No match
 /^a\x41z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aAz
  0: aAz
-    *** Failers
-No match
+\= Expect no match
     ax41z
 No match
 
@@ -11290,8 +11163,7 @@ No match
 /^a\u0041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aAz
  0: aAz
-    *** Failers
-No match
+\= Expect no match
     au0041z
 No match
 
@@ -11302,16 +11174,14 @@ No match
 /^a\u041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     au041z
  0: au041z
-    *** Failers
-No match
+\= Expect no match
     aAz
 No match
 
 /^a\U0041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aU0041z
  0: aU0041z
-    *** Failers
-No match
+\= Expect no match
     aAz
 No match
 
@@ -11384,8 +11254,7 @@ MK: A
  4: X
  5: Y
 MK: B
-    ** Failers
-No match
+\= Expect no match
     XAQQ  
 No match, mark = A
     XAQQXZZ  
@@ -11402,8 +11271,7 @@ No match, mark = B
     aw 
  0: aw
 MK: n
-    ** Failers 
-No match, mark = n
+\= Expect no match 
     abc
 No match, mark = m
 
@@ -11411,8 +11279,7 @@ No match, mark = m
     aw 
  0: aw
 MK: n
-    ** Failers 
-No match, mark = n
+\= Expect no match 
     abc
 No match, mark = m
 
@@ -11969,10 +11836,11 @@ Partial match: 123a
  0: ad
 
 /^(?!a(*THEN)b|ac)../
-     ac
-No match
      ad 
  0: ad
+\= Expect no match
+     ac
+No match
 
 /^(?=a(*THEN)b|ac)/
     ac
@@ -12009,6 +11877,7 @@ No match
  0: bn
 
 /(?(?=b(*SKIP)a)bn|bnn)/
+\= Expect no match
     bnn
 No match
 
@@ -12073,9 +11942,10 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-# A complete set of tests for auto-possessification of character types.
+# A complete set of tests for auto-possessification of character types, but
+# omitting \C because it might be disabled (it has its own tests).
 
-/\D+\D \D+\d \D+\S \D+\s \D+\W \D+\w \D+. \D+\C \D+\R \D+\H \D+\h \D+\V \D+\v \D+\Z \D+\z \D+$/Bx
+/\D+\D \D+\d \D+\S \D+\s \D+\W \D+\w \D+. \D+\R \D+\H \D+\h \D+\V \D+\v \D+\Z \D+\z \D+$/Bx
 ------------------------------------------------------------------
         Bra
         \D+
@@ -12093,8 +11963,6 @@ Subject length lower bound = 5
         \D+
         Any
         \D+
-        AllAny
-        \D+
         \R
         \D+
         \H
@@ -12114,7 +11982,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\d+\D \d+\d \d+\S \d+\s \d+\W \d+\w \d+. \d+\C \d+\R \d+\H \d+\h \d+\V \d+\v \d+\Z \d+\z \d+$/Bx
+/\d+\D \d+\d \d+\S \d+\s \d+\W \d+\w \d+. \d+\R \d+\H \d+\h \d+\V \d+\v \d+\Z \d+\z \d+$/Bx
 ------------------------------------------------------------------
         Bra
         \d++
@@ -12131,8 +11999,6 @@ Subject length lower bound = 5
         \w
         \d+
         Any
-        \d+
-        AllAny
         \d++
         \R
         \d+
@@ -12153,7 +12019,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\S+\D \S+\d \S+\S \S+\s \S+\W \S+\w \S+. \S+\C \S+\R \S+\H \S+\h \S+\V \S+\v \S+\Z \S+\z \S+$/Bx
+/\S+\D \S+\d \S+\S \S+\s \S+\W \S+\w \S+. \S+\R \S+\H \S+\h \S+\V \S+\v \S+\Z \S+\z \S+$/Bx
 ------------------------------------------------------------------
         Bra
         \S+
@@ -12170,8 +12036,6 @@ Subject length lower bound = 5
         \w
         \S+
         Any
-        \S+
-        AllAny
         \S++
         \R
         \S+
@@ -12192,7 +12056,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\s+\D \s+\d \s+\S \s+\s \s+\W \s+\w \s+. \s+\C \s+\R \s+\H \s+\h \s+\V \s+\v \s+\Z \s+\z \s+$/Bx
+/\s+\D \s+\d \s+\S \s+\s \s+\W \s+\w \s+. \s+\R \s+\H \s+\h \s+\V \s+\v \s+\Z \s+\z \s+$/Bx
 ------------------------------------------------------------------
         Bra
         \s+
@@ -12210,8 +12074,6 @@ Subject length lower bound = 5
         \s+
         Any
         \s+
-        AllAny
-        \s+
         \R
         \s+
         \H
@@ -12231,7 +12093,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\W+\D \W+\d \W+\S \W+\s \W+\W \W+\w \W+. \W+\C \W+\R \W+\H \W+\h \W+\V \W+\v \W+\Z \W+\z \W+$/Bx
+/\W+\D \W+\d \W+\S \W+\s \W+\W \W+\w \W+. \W+\R \W+\H \W+\h \W+\V \W+\v \W+\Z \W+\z \W+$/Bx
 ------------------------------------------------------------------
         Bra
         \W+
@@ -12249,8 +12111,6 @@ Subject length lower bound = 5
         \W+
         Any
         \W+
-        AllAny
-        \W+
         \R
         \W+
         \H
@@ -12270,7 +12130,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\w+\D \w+\d \w+\S \w+\s \w+\W \w+\w \w+. \w+\C \w+\R \w+\H \w+\h \w+\V \w+\v \w+\Z \w+\z \w+$/Bx
+/\w+\D \w+\d \w+\S \w+\s \w+\W \w+\w \w+. \w+\R \w+\H \w+\h \w+\V \w+\v \w+\Z \w+\z \w+$/Bx
 ------------------------------------------------------------------
         Bra
         \w+
@@ -12287,8 +12147,6 @@ Subject length lower bound = 5
         \w
         \w+
         Any
-        \w+
-        AllAny
         \w++
         \R
         \w+
@@ -12309,46 +12167,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\C+\D \C+\d \C+\S \C+\s \C+\W \C+\w \C+. \C+\C \C+\R \C+\H \C+\h \C+\V \C+\v \C+\Z \C+\z \C+$/Bx
-------------------------------------------------------------------
-        Bra
-        AllAny+
-        \D
-        AllAny+
-        \d
-        AllAny+
-        \S
-        AllAny+
-        \s
-        AllAny+
-        \W
-        AllAny+
-        \w
-        AllAny+
-        Any
-        AllAny+
-        AllAny
-        AllAny+
-        \R
-        AllAny+
-        \H
-        AllAny+
-        \h
-        AllAny+
-        \V
-        AllAny+
-        \v
-        AllAny+
-        \Z
-        AllAny++
-        \z
-        AllAny+
-        $
-        Ket
-        End
-------------------------------------------------------------------
-
-/\R+\D \R+\d \R+\S \R+\s \R+\W \R+\w \R+. \R+\C \R+\R \R+\H \R+\h \R+\V \R+\v \R+\Z \R+\z \R+$/Bx
+/\R+\D \R+\d \R+\S \R+\s \R+\W \R+\w \R+. \R+\R \R+\H \R+\h \R+\V \R+\v \R+\Z \R+\z \R+$/Bx
 ------------------------------------------------------------------
         Bra
         \R+
@@ -12366,8 +12185,6 @@ Subject length lower bound = 5
         \R++
         Any
         \R+
-        AllAny
-        \R+
         \R
         \R+
         \H
@@ -12387,7 +12204,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\H+\D \H+\d \H+\S \H+\s \H+\W \H+\w \H+. \H+\C \H+\R \H+\H \H+\h \H+\V \H+\v \H+\Z \H+\z \H+$/Bx
+/\H+\D \H+\d \H+\S \H+\s \H+\W \H+\w \H+. \H+\R \H+\H \H+\h \H+\V \H+\v \H+\Z \H+\z \H+$/Bx
 ------------------------------------------------------------------
         Bra
         \H+
@@ -12405,8 +12222,6 @@ Subject length lower bound = 5
         \H+
         Any
         \H+
-        AllAny
-        \H+
         \R
         \H+
         \H
@@ -12426,7 +12241,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\h+\D \h+\d \h+\S \h+\s \h+\W \h+\w \h+. \h+\C \h+\R \h+\H \h+\h \h+\V \h+\v \h+\Z \h+\z \h+$/Bx
+/\h+\D \h+\d \h+\S \h+\s \h+\W \h+\w \h+. \h+\R \h+\H \h+\h \h+\V \h+\v \h+\Z \h+\z \h+$/Bx
 ------------------------------------------------------------------
         Bra
         \h+
@@ -12443,8 +12258,6 @@ Subject length lower bound = 5
         \w
         \h+
         Any
-        \h+
-        AllAny
         \h++
         \R
         \h++
@@ -12465,7 +12278,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\V+\D \V+\d \V+\S \V+\s \V+\W \V+\w \V+. \V+\C \V+\R \V+\H \V+\h \V+\V \V+\v \V+\Z \V+\z \V+$/Bx
+/\V+\D \V+\d \V+\S \V+\s \V+\W \V+\w \V+. \V+\R \V+\H \V+\h \V+\V \V+\v \V+\Z \V+\z \V+$/Bx
 ------------------------------------------------------------------
         Bra
         \V+
@@ -12482,8 +12295,6 @@ Subject length lower bound = 5
         \w
         \V+
         Any
-        \V+
-        AllAny
         \V++
         \R
         \V+
@@ -12504,7 +12315,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\v+\D \v+\d \v+\S \v+\s \v+\W \v+\w \v+. \v+\C \v+\R \v+\H \v+\h \v+\V \v+\v \v+\Z \v+\z \v+$/Bx
+/\v+\D \v+\d \v+\S \v+\s \v+\W \v+\w \v+. \v+\R \v+\H \v+\h \v+\V \v+\v \v+\Z \v+\z \v+$/Bx
 ------------------------------------------------------------------
         Bra
         \v+
@@ -12522,8 +12333,6 @@ Subject length lower bound = 5
         \v+
         Any
         \v+
-        AllAny
-        \v+
         \R
         \v+
         \H
@@ -12543,7 +12352,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/ a+\D  a+\d  a+\S  a+\s  a+\W  a+\w  a+.  a+\C  a+\R  a+\H  a+\h  a+\V  a+\v  a+\Z  a+\z  a+$/Bx
+/ a+\D  a+\d  a+\S  a+\s  a+\W  a+\w  a+.  a+\R  a+\H  a+\h  a+\V  a+\v  a+\Z  a+\z  a+$/Bx
 ------------------------------------------------------------------
         Bra
         a+
@@ -12560,8 +12369,6 @@ Subject length lower bound = 5
         \w
         a+
         Any
-        a+
-        AllAny
         a++
         \R
         a+
@@ -12582,7 +12389,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\n+\D \n+\d \n+\S \n+\s \n+\W \n+\w \n+. \n+\C \n+\R \n+\H \n+\h \n+\V \n+\v \n+\Z \n+\z \n+$/Bx
+/\n+\D \n+\d \n+\S \n+\s \n+\W \n+\w \n+. \n+\R \n+\H \n+\h \n+\V \n+\v \n+\Z \n+\z \n+$/Bx
 ------------------------------------------------------------------
         Bra
         \x0a+
@@ -12600,8 +12407,6 @@ Subject length lower bound = 5
         \x0a+
         Any
         \x0a+
-        AllAny
-        \x0a+
         \R
         \x0a+
         \H
@@ -12621,7 +12426,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/ .+\D  .+\d  .+\S  .+\s  .+\W  .+\w  .+.  .+\C  .+\R  .+\H  .+\h  .+\V  .+\v  .+\Z  .+\z  .+$/Bx
+/ .+\D  .+\d  .+\S  .+\s  .+\W  .+\w  .+.  .+\R  .+\H  .+\h  .+\V  .+\v  .+\Z  .+\z  .+$/Bx
 ------------------------------------------------------------------
         Bra
         Any+
@@ -12638,8 +12443,6 @@ Subject length lower bound = 5
         \w
         Any+
         Any
-        Any+
-        AllAny
         Any++
         \R
         Any+
@@ -12660,7 +12463,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/ .+\D  .+\d  .+\S  .+\s  .+\W  .+\w  .+.  .+\C  .+\R  .+\H  .+\h  .+\V  .+\v  .+\Z  .+\z  .+$/Bsx
+/ .+\D  .+\d  .+\S  .+\s  .+\W  .+\w  .+.  .+\R  .+\H  .+\h  .+\V  .+\v  .+\Z  .+\z  .+$/Bsx
 ------------------------------------------------------------------
         Bra
         AllAny+
@@ -12678,8 +12481,6 @@ Subject length lower bound = 5
         AllAny+
         AllAny
         AllAny+
-        AllAny
-        AllAny+
         \R
         AllAny+
         \H
@@ -12699,7 +12500,7 @@ Subject length lower bound = 5
         End
 ------------------------------------------------------------------
 
-/\D+$  \d+$  \S+$  \s+$  \W+$  \w+$  \C+$  \R+$  \H+$  \h+$  \V+$  \v+$   a+$  \n+$   .+$  .+$/Bmx
+/ \D+$  \d+$  \S+$  \s+$  \W+$  \w+$  \R+$  \H+$  \h+$  \V+$ \v+$  a+$   \n+$  .+$  .+$/Bmx
 ------------------------------------------------------------------
         Bra
         \D+
@@ -12714,8 +12515,6 @@ Subject length lower bound = 5
      /m $
         \w++
      /m $
-        AllAny+
-     /m $
         \R+
      /m $
         \H+
@@ -13326,10 +13125,10 @@ Failed: error 144 at offset 13: group name must start with a non-digit
 Failed: error 144 at offset 14: group name must start with a non-digit
 
 /\g'3gh'/
-Failed: error 157 at offset 7: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number
+Failed: error 157 at offset 2: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number
 
 /\g<5fg>/
-Failed: error 157 at offset 7: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number
+Failed: error 157 at offset 2: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number
 
 /(?(<4gh>)abc)/
 Failed: error 144 at offset 4: group name must start with a non-digit
@@ -13393,8 +13192,7 @@ Failed: error 144 at offset 5: group name must start with a non-digit
  0: red
     put it all on red  
  0: red
-    ** Failers
-No match
+\= Expect no match
     no reduction
 No match
     Alfred Winifred
@@ -13410,6 +13208,7 @@ Start of matched string is beyond its end - displaying from end to start.
  0+ abcd
 
 /abcd/newline=lf,firstline
+\= Expect no match
     xx\nxabcd
 No match
     
@@ -13461,10 +13260,10 @@ Failed: error 178 at offset 3: digits missing in \x{} or \o{}
 Failed: error 167 at offset 3: non-hex character in \x{} (closing brace missing?)
 
 /A\8B/
-Failed: error 115 at offset 4: reference to non-existent subpattern
+Failed: error 115 at offset 2: reference to non-existent subpattern
 
 /A\9B/
-Failed: error 115 at offset 4: reference to non-existent subpattern
+Failed: error 115 at offset 2: reference to non-existent subpattern
 
 # This one is here because Perl fails to match "12" for this pattern when the $ 
 # is present.
@@ -13474,8 +13273,7 @@ Failed: error 115 at offset 4: reference to non-existent subpattern
  0: abc:
     12
  0: 12
-    *** Failers
-No match
+\= Expect no match
     123
 No match
     xyz    
@@ -13551,8 +13349,7 @@ Capturing subpattern count = 0
 Subject length lower bound = 6
     yesnononoyes
  0: nonono
-    ** Failers
-No match
+\= Expect no match
     yesno   
 No match
 
@@ -13568,8 +13365,7 @@ Subject length lower bound = 5
  1: abc
     xyzno
  0: xyzno
-    ** Failers
-No match
+\= Expect no match
     abcno
 No match
     xyzyes    
@@ -13584,6 +13380,9 @@ Failed: error 179 at offset 11: syntax error in (?(VERSION condition
 /(?(VERSION>=10.0.0)yes|no)/
 Failed: error 179 at offset 16: syntax error in (?(VERSION condition
 
+/(?(VERSION=10.101)yes|no)/
+Failed: error 179 at offset 17: syntax error in (?(VERSION condition
+
 /abcd/I
 Capturing subpattern count = 0
 First code unit = 'a'
@@ -13626,8 +13425,6 @@ Subject length lower bound = 0
 /(((((a)))))/parens_nest_limit=2
 Failed: error 119 at offset 3: parentheses are too deeply nested
 
-# Tests for pcre2_substitute()
-
 /abc/replace=XYZ
     123123
  0: 123123
@@ -13674,27 +13471,27 @@ Failed: error 119 at offset 3: parentheses are too deeply nested
 
 /abc/replace=a$++
     123abc
-Failed: error -35: invalid replacement string
+Failed: error -35 at offset 2 in replacement: invalid replacement string
 
 /abc/replace=a$bad
     123abc
-Failed: error -49: unknown substring
+Failed: error -49 at offset 5 in replacement: unknown substring
 
 /abc/replace=a${A234567890123456789_123456789012}z
     123abc
-Failed: error -49: unknown substring
+Failed: error -49 at offset 36 in replacement: unknown substring
 
 /abc/replace=a${A23456789012345678901234567890123}z
     123abc
-Failed: error -35: invalid replacement string
+Failed: error -35 at offset 35 in replacement: invalid replacement string
 
 /abc/replace=a${bcd
     123abc
-Failed: error -35: invalid replacement string
+Failed: error -58 at offset 6 in replacement: expected closing curly bracket in replacement string
 
 /abc/replace=a${b+d}z
     123abc
-Failed: error -35: invalid replacement string
+Failed: error -58 at offset 4 in replacement: expected closing curly bracket in replacement string
 
 /abc/replace=[10]XYZ
     123abc123
@@ -13737,8 +13534,76 @@ Failed: error -34: bad option value
 /(.)(.)/g,replace=$2$1
     abcdefgh  
  4: badcfehg
+    
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=${*MARK}
+    apple lemon blackberry
+ 3: pear orange strawberry
+    apple strudel
+ 1: pear strudel
+    fruitless  
+ 0: fruitless
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/replace=${*MARK} sauce,
+    apple lemon blackberry
+ 1: pear sauce lemon blackberry
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=<$*MARK>
+    apple lemon blackberry
+ 3: <pear> <orange> <strawberry>
+    apple strudel
+ 1: <pear> strudel
+    fruitless  
+ 0: fruitless
+    
+/(*:pear)apple/g,replace=${*MARKING} 
+    apple lemon blackberry
+Failed: error -35 at offset 11 in replacement: invalid replacement string
+
+/(*:pear)apple/g,replace=${*MARK-time
+    apple lemon blackberry
+Failed: error -58 at offset 7 in replacement: expected closing curly bracket in replacement string
+
+/(*:pear)apple/g,replace=${*mark} 
+    apple lemon blackberry
+Failed: error -35 at offset 8 in replacement: invalid replacement string
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=<$*MARKET>
+    apple lemon blackberry
+Failed: error -35 at offset 9 in replacement: invalid replacement string
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=[22]${*MARK}
+    apple lemon blackberry
+Failed: error -48: no more memory
+    apple lemon blackberry\=substitute_overflow_length
+Failed: error -48: no more memory: 23 code units are needed
+
+/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=[23]${*MARK}
+    apple lemon blackberry
+ 3: pear orange strawberry
 
-# End of substitute tests 
+/abc/
+    123abc123\=replace=[9]XYZ
+Failed: error -48: no more memory
+    123abc123\=substitute_overflow_length,replace=[9]XYZ
+Failed: error -48: no more memory: 10 code units are needed
+    123abc123\=substitute_overflow_length,replace=[6]XYZ
+Failed: error -48: no more memory: 10 code units are needed
+    123abc123\=substitute_overflow_length,replace=[1]XYZ
+Failed: error -48: no more memory: 10 code units are needed
+    123abc123\=substitute_overflow_length,replace=[0]XYZ
+Failed: error -48: no more memory: 10 code units are needed
+
+/a(b)c/
+    123abc123\=replace=[9]x$1z
+Failed: error -48: no more memory
+    123abc123\=substitute_overflow_length,replace=[9]x$1z
+Failed: error -48: no more memory: 10 code units are needed
+    123abc123\=substitute_overflow_length,replace=[6]x$1z
+Failed: error -48: no more memory: 10 code units are needed
+    123abc123\=substitute_overflow_length,replace=[1]x$1z
+Failed: error -48: no more memory: 10 code units are needed
+    123abc123\=substitute_overflow_length,replace=[0]x$1z
+Failed: error -48: no more memory: 10 code units are needed
 
 "((?=(?(?=(?(?=(?(?=()))))))))"
     a
@@ -13747,6 +13612,7 @@ Failed: error -34: bad option value
  2: 
 
 "(?(?=)==)(((((((((?=)))))))))"
+\= Expect no match
     a
 No match
 
@@ -13821,6 +13687,7 @@ Capturing subpattern count = 0
 Options: auto_callout
 First code unit at start or follows newline
 Subject length lower bound = 1
+\= Expect no match
     aaa
 --->aaa
  +0 ^       .*
@@ -13834,6 +13701,7 @@ No match
 Capturing subpattern count = 0
 Options: auto_callout no_dotstar_anchor
 Subject length lower bound = 1
+\= Expect no match
     aaa
 --->aaa
  +0 ^       .*
@@ -13864,7 +13732,7 @@ Subject length lower bound = 1
 /(*NO_DOTSTAR_ANCHOR)(?s).*\d/info
 Capturing subpattern count = 0
 Compile options: <none>
-Overall options: dotall no_dotstar_anchor
+Overall options: no_dotstar_anchor
 Subject length lower bound = 1
 
 '^(?:(a)|b)(?(1)A|B)'
@@ -13928,8 +13796,7 @@ Failed: error 109 at offset 7: quantifier does not follow a repeatable item
  0: 00765
      456
  0: 456
-     ** Failers
-No match
+\= Expect no match
      356   
 No match
 
@@ -14193,8 +14060,7 @@ Callout (5): 'x\x00z'
 /(?(?!)a|b)/
     bbb
  0: b
-    ** Failers 
-No match
+\= Expect no match 
     aaa 
 No match
 
@@ -14293,10 +14159,8 @@ Capturing subpattern count = 2
 May match empty string
 Subject length lower bound = 0
 
-/ab\Cde/never_backslash_c
-Failed: error 183 at offset 3: using \C is disabled by the application
-
 /abc/
+\= Expect no match
     \[9x!xxx(]{9999}
 No match
     
@@ -14319,7 +14183,7 @@ No match
  0: 
 
 /((((((((x))))))))\81/
-Failed: error 115 at offset 20: reference to non-existent subpattern
+Failed: error 115 at offset 19: reference to non-existent subpattern
     xx1
 
 /((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((x))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))\80/
@@ -14342,10 +14206,10 @@ Matched, but too many substrings
 14: x
 
 /\80/
-Failed: error 115 at offset 3: reference to non-existent subpattern
+Failed: error 115 at offset 2: reference to non-existent subpattern
 
 /A\8B\9C/
-Failed: error 115 at offset 7: reference to non-existent subpattern
+Failed: error 115 at offset 2: reference to non-existent subpattern
     A8B9C
     
 /(?x:((?'a')) # comment (with parentheses) and | vertical
@@ -14428,10 +14292,10 @@ Subject length lower bound = 1
 ------------------------------------------------------------------
 
 /(\9*+(?2);\3++()2|)++{/
-Failed: error 115 at offset 22: reference to non-existent subpattern
+Failed: error 115 at offset 2: reference to non-existent subpattern
 
 /\V\x85\9*+((?2)\3++()2)*:2/
-Failed: error 115 at offset 26: reference to non-existent subpattern
+Failed: error 115 at offset 7: reference to non-existent subpattern
 
 /(((?(R)){0,2}) (?'x'((?'R')((?'R')))))/dupnames
 
@@ -14470,4 +14334,828 @@ Failed: error 161 at offset 32: number is too big
         End
 ------------------------------------------------------------------
 
+/[[:>:]](?<)/
+Failed: error 124 at offset 10: letter or underscore expected after (?< or (?'
+
+/((?x)(*:0))#(?'/
+Failed: error 124 at offset 15: letter or underscore expected after (?< or (?'
+
+/(?C$[$)(?<]/
+Failed: error 124 at offset 10: letter or underscore expected after (?< or (?'
+
+/(?C$)$)(?<]/
+Failed: error 124 at offset 10: letter or underscore expected after (?< or (?'
+
+/(?(R))*+/B
+------------------------------------------------------------------
+        Bra
+        Braposzero
+        SBraPos
+        SCond
+        Cond recurse any
+        Ket
+        KetRpos
+        Ket
+        End
+------------------------------------------------------------------
+    abcd
+ 0: 
+
+/((?x)(?#))#(?'/
+Failed: error 124 at offset 14: letter or underscore expected after (?< or (?'
+
+/((?x)(?#))#(?'abc')/I
+Capturing subpattern count = 2
+Named capturing subpatterns:
+  abc   2
+First code unit = '#'
+Subject length lower bound = 1
+
+/[[:\\](?<[::]/
+Failed: error 124 at offset 9: letter or underscore expected after (?< or (?'
+
+/[[:\\](?'abc')[a:]/I
+Capturing subpattern count = 1
+Named capturing subpatterns:
+  abc   1
+Starting code units: : [ \ 
+Subject length lower bound = 2
+
+"[[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[:::::::::::::::::[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[[[:::E[[[:[:[[:[:::[[:::E[[[:[:[[:'[:::::E[[[:[::::::[[[:[[[[[[[::E[[[:[::::::[[[:[[[[[[[[:[[::[::::[[:::::::[[:[[[[[[[:[[::[:[[:[~"
+Failed: error 106 at offset 353: missing terminating ] for character class
+
+/()(?(R)0)*+/B
+------------------------------------------------------------------
+        Bra
+        CBra 1
+        Ket
+        Braposzero
+        SBraPos
+        SCond
+        Cond recurse any
+        0
+        Ket
+        KetRpos
+        Ket
+        End
+------------------------------------------------------------------
+
+/(?R-:(?</
+Failed: error 129 at offset 3: (?R or (?[+-]digits must be followed by )
+
+/(?(?C{\Q})(?!(?'/
+Failed: error 124 at offset 16: letter or underscore expected after (?< or (?'
+
+/(?(?C{\Q})(?!(?'abc')))/I
+Capturing subpattern count = 1
+Named capturing subpatterns:
+  abc   1
+May match empty string
+Subject length lower bound = 0
+
+/(?1){3918}(((((0(\k'R'))))(?J)(?'R'(?'R'\3){99})))/I
+Capturing subpattern count = 8
+Max back reference = 8
+Named capturing subpatterns:
+  R   7
+  R   8
+Duplicate name status changes
+Last code unit = '0'
+Subject length lower bound = 65535
+
+/(?|(aaa)|(b))\g{1}/I
+Capturing subpattern count = 1
+Max back reference = 1
+Starting code units: a b 
+Subject length lower bound = 0
+
+/(?|(aaa)|(b))(?1)/I
+Capturing subpattern count = 1
+Starting code units: a b 
+Subject length lower bound = 4
+
+/(?|(aaa)|(b))/I
+Capturing subpattern count = 1
+Starting code units: a b 
+Subject length lower bound = 1
+
+/(?|(?'a'aaa)|(?'a'b))\k'a'/I
+Capturing subpattern count = 1
+Max back reference = 1
+Named capturing subpatterns:
+  a   1
+Starting code units: a b 
+Subject length lower bound = 0
+
+/(?|(?'a'aaa)|(?'a'b))(?'a'cccc)\k'a'/I,dupnames
+Capturing subpattern count = 2
+Max back reference = 2
+Named capturing subpatterns:
+  a   1
+  a   2
+Options: dupnames
+Starting code units: a b 
+Last code unit = 'c'
+Subject length lower bound = 0
+
+/ab{3cd/
+    ab{3cd
+ 0: ab{3cd
+
+/ab{3,cd/
+    ab{3,cd
+ 0: ab{3,cd
+
+/ab{3,4a}cd/
+    ab{3,4a}cd
+ 0: ab{3,4a}cd
+
+/{4,5a}bc/
+    {4,5a}bc
+ 0: {4,5a}bc
+
+/\x0{ab}/
+    \0{ab} 
+ 0: \x00{ab}
+
+/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/
+    ababababbbabZXXXX
+ 0: ababababbbabZ
+ 1: ab
+ 2: b
+
+/.*?a(*PRUNE)b/
+    aab
+ 0: ab
+
+/.*?a(*PRUNE)b/s
+    aab
+ 0: ab
+
+/^a(*PRUNE)b/s
+\= Expect no match
+    aab
+No match
+
+/.*?a(*SKIP)b/
+    aab
+ 0: ab
+
+/(?(8000000000/
+Failed: error 161 at offset 13: number is too big
+
+/((?(R8000000000)))/
+Failed: error 161 at offset 16: number is too big
+
+/0(?0)|(1)(*THEN)(*SKIP:0)(*FAIL)/
+\= Expect no match
+    01
+No match
+
+/(?(1)()\983040\2)/
+Failed: error 115 at offset 13: reference to non-existent subpattern
+
+/(*LIMIT_MATCH=)abc/
+Failed: error 160 at offset 14: (*VERB) not recognized or malformed
+
+/(*CRLF)(*LIMIT_MATCH=)abc/
+Failed: error 160 at offset 21: (*VERB) not recognized or malformed
+
+/(?:ab)?(?:ab)(?:ab)/
+    abab
+ 0: abab
+    ababab
+ 0: ababab
+\= Expect no match
+    aba
+No match
+
+/((*MARK:A))++a(*SKIP:B)b/
+\= Expect no match
+    aacb
+No match
+
+/(*MARK:a\zb)z/alt_verbnames 
+Failed: error 140 at offset 9: invalid escape sequence in (*VERB) name
+    
+/(*:ab\t(d\)c)xxx/
+Failed: error 122 at offset 12: unmatched closing parenthesis
+
+/(*:ab\t(d\)c)xxx/alt_verbnames,mark
+    cxxxz
+ 0: xxx
+MK: ab\x09(d)c
+
+/(*:A\Qxx)x\EB)x/alt_verbnames,mark
+    x
+ 0: x
+MK: Axx)xB
+    
+/(*:A\ExxxB)x/alt_verbnames,mark
+    x 
+ 0: x
+MK: AxxxB
+    
+/(*: A \ and #comment
+     \ B)x/x,alt_verbnames,mark
+    x  
+ 0: x
+MK: A and B
+    
+/(*:A
+B)x/alt_verbnames,mark 
+    x
+ 0: x
+MK: A\x0aB
+
+/(*:abc\Qpqr)/alt_verbnames
+Failed: error 160 at offset 12: (*VERB) not recognized or malformed
+
+/abc/use_offset_limit
+    1234abcde\=offset_limit=100
+ 0: abc
+    1234abcde\=offset_limit=9
+ 0: abc
+    1234abcde\=offset_limit=4
+ 0: abc
+    1234abcde\=offset_limit=4,offset=4
+ 0: abc
+\= Expect no match
+    1234abcde\=offset_limit=4,offset=5
+No match
+    1234abcde\=offset_limit=3
+No match
+
+/(?<=abc)/use_offset_limit
+    1234abc\=offset_limit=7
+ 0: 
+\= Expect no match
+    1234abc\=offset_limit=6
+No match
+    
+/A/g,replace=-,use_offset_limit
+    XAXAXAXAXA\=offset_limit=4
+ 2: X-X-XAXAXA
+
+/abc/
+\= Expect error
+    1234abcde\=offset_limit=4
+Failed: error -56: offset limit set without PCRE2_USE_OFFSET_LIMIT
+
+/^\w/m,use_offset_limit
+    \n..\naa\=offset_limit=3
+No match
+    \n..\naa\=offset_limit=4
+ 0: a
+
+/abcd/null_context
+    abcd\=null_context
+ 0: abcd
+\= Expect error     
+    abcd\=null_context,find_limits
+** Not allowed together: find_limits null_context
+    abcd\=allusedtext,startchar 
+** Not allowed together: allusedtext startchar
+
+/abcd/replace=w\rx\x82y\o{333}z(\Q12\$34$$\x34\E5$$),substitute_extended
+    abcd
+ 1: w\x0dx\x82y\xdbz(12\$34$$\x345$)
+    
+/a(bc)(DE)/replace=a\u$1\U$1\E$1\l$2\L$2\Eab\Uab\LYZ\EDone,substitute_extended
+    abcDE
+ 1: aBcBCbcdEdeabAByzDone
+ 
+/abcd/replace=xy\kz,substitute_extended
+    abcd
+Failed: error -57 at offset 4 in replacement: bad escape sequence in replacement string
+
+/a(?:(b)|(c))/substitute_extended,replace=X${1:+1:-1}X${2:+2:-2}
+    ab
+ 1: X1X-2
+    ac
+ 1: X-1X2
+    ab\=replace=${1:+$1\:$1:$2}
+ 1: b:b
+    ac\=replace=${1:+$1\:$1:$2}
+ 1: c
+
+/a(?:(b)|(c))/substitute_extended,replace=X${1:-1:-1}X${2:-2:-2}
+    ab
+ 1: XbX2:-2
+    ac
+ 1: X1:-1Xc
+
+/(a)/substitute_extended,replace=>${1:+\Q$1:{}$$\E+\U$1}<
+    a
+ 1: >$1:{}$$+A<
+
+/X(b)Y/substitute_extended
+    XbY\=replace=x${1:+$1\U$1}y
+ 1: xbBY
+    XbY\=replace=\Ux${1:+$1$1}y
+ 1: XBBY
+
+/a/substitute_extended,replace=${*MARK:+a:b}
+    a
+Failed: error -58 at offset 7 in replacement: expected closing curly bracket in replacement string
+
+/(abcd)/replace=${1:+xy\kz},substitute_extended
+    abcd
+Failed: error -57 at offset 8 in replacement: bad escape sequence in replacement string
+
+/(abcd)/
+    abcd\=replace=${1:+xy\kz},substitute_extended
+Failed: error -57 at offset 8 in replacement: bad escape sequence in replacement string
+
+/abcd/substitute_extended,replace=>$1<
+    abcd
+Failed: error -49 at offset 3 in replacement: unknown substring
+
+/abcd/substitute_extended,replace=>xxx${xyz}<<<
+    abcd
+Failed: error -49 at offset 10 in replacement: unknown substring
+
+/(?J)(?:(?<A>a)|(?<A>b))/replace=<$A>
+    [a]
+ 1: [<a>]
+    [b] 
+ 1: [<b>]
+\= Expect error     
+    (a)\=ovector=1
+Failed: error -54 at offset 3 in replacement: requested value is not available
+
+/(a)|(b)/replace=<$1>
+\= Expect error
+    b
+Failed: error -55 at offset 3 in replacement: requested value is not set
+
+/(aa)(BB)/substitute_extended,replace=\U$1\L$2\E$1..\U$1\l$2$1
+    aaBB
+ 1: AAbbaa..AAbBaa
+
+/^(o(\1{72}{\"{\\{00000059079}\d*){74}}){19}/I
+Capturing subpattern count = 2
+Max back reference = 1
+Compile options: <none>
+Overall options: anchored
+Last code unit = '}'
+Subject length lower bound = 65535
+
+/((p(?'K/
+Failed: error 142 at offset 7: syntax error in subpattern name (missing terminator)
+
+/((p(?'K/no_auto_capture
+Failed: error 142 at offset 7: syntax error in subpattern name (missing terminator)
+
+/abc/replace=A$3123456789Z
+    abc
+Failed: error -49 at offset 3 in replacement: unknown substring
+
+/(?<!a{65535}a{5})x/I
+Failed: error 187 at offset 16: lookbehind assertion is too long
+
+/(?<!a{65535})x/I
+Capturing subpattern count = 0
+Max lookbehind = 65535
+First code unit = 'x'
+Subject length lower bound = 1
+
+/(?=a\K)/replace=z
+    BaCaD
+Failed: error -60: match with end before start is not supported
+    
+/(?'abcdefghijklmnopqrstuvwxyzABCDEFG'toolong)/
+Failed: error 148 at offset 36: subpattern name is too long (maximum 32 characters)
+ 
+/(?'abcdefghijklmnopqrstuvwxyzABCDEF'justright)/ 
+
+# These two use zero-termination
+/abcd/max_pattern_length=3
+Failed: error 188 at offset 0: pattern string is longer than the limit set by the application
+
+/abc/max_pattern_length=3
+
+# These two, being hex, pass the length
+/abcdefab/hex,max_pattern_length=3
+Failed: error 188 at offset 0: pattern string is longer than the limit set by the application
+
+/abcdef/hex,max_pattern_length=3
+
+# These two patterns used to take a long time to compile
+
+"(.*)
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))"xI
+Capturing subpattern count = 12
+May match empty string
+Options: extended
+First code unit at start or follows newline
+Subject length lower bound = 0
+
+"(?<=a()
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+a)"xI
+Capturing subpattern count = 12
+Max lookbehind = 2
+May match empty string
+Options: extended
+Subject length lower bound = 0
+
+# When (?| is used and groups of the same number may be different,
+# we have to rely on a count to catch overly complicated patterns.
+
+"(?|()|())(.*)
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))"xI
+Failed: error 186 at offset 148: regular expression is too complicated
+
+"(?|()|())(?<=a()
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))
+a)"xI
+Failed: error 186 at offset 154: regular expression is too complicated
+
+# Test the use of malloc for caching group information when there are more
+# groups than fit into the on-stack workspace.
+
+/\[()]{1024}/I,expand
+Expanded: ()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()
+Capturing subpattern count = 1024
+May match empty string
+Subject length lower bound = 0
+
+# Test minlength capped at 65535
+
+/(A{65000})\1{65000}/I
+Capturing subpattern count = 1
+Max back reference = 1
+First code unit = 'A'
+Last code unit = 'A'
+Subject length lower bound = 65535
+
+# Test group scans when numbers are not unique
+
+/(?|()+|(a)+)/BI
+------------------------------------------------------------------
+        Bra
+        Bra
+        SCBra 1
+        KetRmax
+        Alt
+        CBra 1
+        a
+        KetRmax
+        Ket
+        Ket
+        End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+May match empty string
+Subject length lower bound = 0
+
+/(?|(a)+|()+)/BI
+------------------------------------------------------------------
+        Bra
+        Bra
+        CBra 1
+        a
+        KetRmax
+        Alt
+        SCBra 1
+        KetRmax
+        Ket
+        Ket
+        End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+May match empty string
+Subject length lower bound = 0
+
+/(?|()|(a))/BI
+------------------------------------------------------------------
+        Bra
+        Bra
+        CBra 1
+        Ket
+        Alt
+        CBra 1
+        a
+        Ket
+        Ket
+        Ket
+        End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+May match empty string
+Subject length lower bound = 0
+
+/(?|(a)|())/BI
+------------------------------------------------------------------
+        Bra
+        Bra
+        CBra 1
+        a
+        Ket
+        Alt
+        CBra 1
+        Ket
+        Ket
+        Ket
+        End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+May match empty string
+Subject length lower bound = 0
+
+# Test CRLF handling in empty string substitutions
+
+/^$/gm,newline=anycrlf,replace=-
+    X\r\n\r\nY
+ 1: X\x0d\x0a-\x0d\x0aY
+
+/^$/gm,newline=crlf,replace=-
+    X\r\n\r\nY
+ 1: X\x0d\x0a-\x0d\x0aY
+
+/^$/gm,newline=any,replace=-
+    X\r\n\r\nY
+ 1: X\x0d\x0a-\x0d\x0aY
+
+"(*ANYCRLF)(?m)^(.*[^0-9\r\n].*|)$"g,replace=NaN
+    15\r\nfoo\r\n20\r\nbar\r\nbaz\r\n\r\n20
+ 4: 15\x0d\x0aNaN\x0d\x0a20\x0d\x0aNaN\x0d\x0aNaN\x0d\x0aNaN\x0d\x0a20
+
+/a[[:punct:]b]/bincode
+------------------------------------------------------------------
+        Bra
+        a
+        [!-/:-@[-`b{-~]
+        Ket
+        End
+------------------------------------------------------------------
+
+/a[b[:punct:]]/bincode
+------------------------------------------------------------------
+        Bra
+        a
+        [!-/:-@[-`b{-~]
+        Ket
+        End
+------------------------------------------------------------------
+
+/L(?#(|++<!(2)?/B
+------------------------------------------------------------------
+        Bra
+        L?+
+        Ket
+        End
+------------------------------------------------------------------
+
+/L(?#(|++<!(2)?/B,no_auto_possess
+------------------------------------------------------------------
+        Bra
+        L?
+        Ket
+        End
+------------------------------------------------------------------
+
+/L(?#(|++<!(2)?/B,auto_callout
+------------------------------------------------------------------
+        Bra
+        Callout 255 0 14
+        L?+
+        Callout 255 14 0
+        Ket
+        End
+------------------------------------------------------------------
+
+/L(?#(|++<!(2)?/B,no_auto_possess,auto_callout
+------------------------------------------------------------------
+        Bra
+        Callout 255 0 14
+        L?
+        Callout 255 14 0
+        Ket
+        End
+------------------------------------------------------------------
+
+/(A*)\E+/B,auto_callout
+------------------------------------------------------------------
+        Bra
+        Callout 255 0 7
+        SCBra 1
+        Callout 255 1 2
+        A*
+        Callout 255 3 0
+        KetRmax
+        Callout 255 7 0
+        Ket
+        End
+------------------------------------------------------------------
+
+/()\Q\E*]/B,auto_callout
+------------------------------------------------------------------
+        Bra
+        Callout 255 0 7
+        Brazero
+        SCBra 1
+        Callout 255 1 0
+        KetRmax
+        Callout 255 7 1
+        ]
+        Callout 255 8 0
+        Ket
+        End
+------------------------------------------------------------------
+    a[bc]d
+--->a[bc]d
+ +0     ^      ()\Q\E*
+ +1     ^      )
+ +7     ^      ]
+ +8     ^^     
+ 0: ]
+ 1: 
+
+/\x8a+f|;T?(*:;.'?`(\xeap ){![^()!y*''C*(?';]{1;(\x08)/B,alt_verbnames,dupnames,extended
+------------------------------------------------------------------
+        Bra
+        \x{8a}++
+        f
+        Alt
+        ;
+        T?
+        *MARK ;.'?`(\x{ea}p
+        {!
+        [\x00- "-&+-:<->@-BD-xz-\xff] (neg)
+        {1;
+        CBra 1
+        \x08
+        Ket
+        Ket
+        End
+------------------------------------------------------------------
+
+# Tests for NULL characters in comments and verb "names" and callouts
+
+# /A#B\x00C\x0aZ/
+/41 23 42 00 43 0a 5a/Bx,hex
+------------------------------------------------------------------
+        Bra
+        AZ
+        Ket
+        End
+------------------------------------------------------------------
+
+# /A+#B\x00C\x0a+/
+/41 2b 23 42 00 43 0a 2b/Bx,hex
+------------------------------------------------------------------
+        Bra
+        A++
+        Ket
+        End
+------------------------------------------------------------------
+
+# /A(*:B\x00W#X\00Y\x0aC)Z/
+/41 28 2a 3a 42 00 57 23 58 00 59 0a 43 29 5a/Bx,hex,alt_verbnames
+------------------------------------------------------------------
+        Bra
+        A
+        *MARK B\x{0}WC
+        Z
+        Ket
+        End
+------------------------------------------------------------------
+
+# /A(*:B\x00W#X\00Y\x0aC)Z/
+/41 28 2a 3a 42 00 57 23 58 00 59 0a 43 29 5a/Bx,hex
+------------------------------------------------------------------
+        Bra
+        A
+        *MARK B\x{0}W#X\x{0}Y\x{a}C
+        Z
+        Ket
+        End
+------------------------------------------------------------------
+
+# /A(?C{X\x00Y})B/
+/41 28 3f 43 7b 58 00 59 7d 29 42/B,hex
+------------------------------------------------------------------
+        Bra
+        A
+        CalloutStr {X\x{0}Y} 5 10 1
+        B
+        Ket
+        End
+------------------------------------------------------------------
+
+# /A(?#X\x00Y)B/
+/41 28 3f 23 7b 00 7d 29 42/B,hex
+------------------------------------------------------------------
+        Bra
+        AB
+        Ket
+        End
+------------------------------------------------------------------
+
+# Tests for leading comment in extended patterns
+
+/ (?-x):?/extended
+
+/(?-x):?/extended
+
+/0b 28 3f 2d 78 29 3a/hex,extended
+
+/#comment
+(?-x):?/extended
+
+/(8(*:6^\x09x\xa6l\)6!|\xd0:[^:|)\x09d\Z\d{85*m(?'(?<1!)*\W[*\xff]!!h\w]*\xbe;/alt_bsux,alt_verbnames,allow_empty_class,dollar_endonly,extended,multiline,never_utf,no_dotstar_anchor,no_start_optimize
+Failed: error 124 at offset 49: letter or underscore expected after (?< or (?'
+
+/a|(b)c/replace=>$1<,substitute_unset_empty
+    cat
+ 1: c><t
+    xbcom 
+ 1: x>b<om
+
+/a|(b)c/
+    cat\=replace=>$1<
+Failed: error -55 at offset 3 in replacement: requested value is not set
+    cat\=replace=>$1<,substitute_unset_empty
+ 1: c><t
+    xbcom\=replace=>$1<,substitute_unset_empty
+ 1: x>b<om
+
+/a|(b)c/substitute_extended
+    cat\=replace=>${2:-xx}<
+Failed: error -49 at offset 9 in replacement: unknown substring
+    cat\=replace=>${2:-xx}<,substitute_unknown_unset
+ 1: c>xx<t
+    cat\=replace=>${X:-xx}<,substitute_unknown_unset
+ 1: c>xx<t
+
+/a|(?'X'b)c/replace=>$X<,substitute_unset_empty
+    cat
+ 1: c><t
+    xbcom 
+ 1: x>b<om
+
+/a|(?'X'b)c/replace=>$Y<,substitute_unset_empty
+    cat
+Failed: error -49 at offset 3 in replacement: unknown substring
+    cat\=substitute_unknown_unset 
+ 1: c><t
+    cat\=substitute_unknown_unset,-substitute_unset_empty 
+Failed: error -55 at offset 3 in replacement: requested value is not set
+
+/a|(b)c/replace=>$2<,substitute_unset_empty
+    cat
+Failed: error -49 at offset 3 in replacement: unknown substring
+    cat\=substitute_unknown_unset 
+ 1: c><t
+    cat\=substitute_unknown_unset,-substitute_unset_empty 
+Failed: error -55 at offset 3 in replacement: requested value is not set
+
+/()()()/use_offset_limit
+    \=ovector=11000000000
+** Invalid value in 'ovector=11000000000'
+    \=callout_fail=11000000000
+** Invalid value in 'callout_fail=11000000000'
+    \=callout_fail=1:11000000000
+** Invalid value in 'callout_fail=1:11000000000'
+    \=callout_data=11000000000 
+** Invalid value in 'callout_data=11000000000'
+    \=callout_data=-11000000000 
+** Invalid value in 'callout_data=-11000000000'
+    \=offset_limit=1100000000000000000000 
+** Invalid value in 'offset_limit=1100000000000000000000'
+    \=copy=11000000000 
+** Invalid value in 'copy=11000000000'
+
+/(*MARK:A\x00b)/mark
+    abc
+ 0: 
+MK: A\x00b
+
+/(*MARK:A\x00b)/mark,alt_verbnames
+    abc
+ 0: 
+MK: A\x00b
+
+# /(*MARK:A\x00b)/
+/28 2a 4d 41 52 4b 3a 41 00 62 29/mark,hex
+    abc
+ 0: 
+MK: A\x00b
+
+# /(*MARK:A\x00b)/
+/28 2a 4d 41 52 4b 3a 41 00 62 29/mark,hex,alt_verbnames
+    abc
+ 0: 
+MK: A\x00b
+
 # End of testinput2 
diff --git a/testdata/testoutput20 b/testdata/testoutput20
new file mode 100644
index 0000000..e923080
--- /dev/null
+++ b/testdata/testoutput20
@@ -0,0 +1,101 @@
+# This set of tests exercises the serialization/deserialization functions in
+# the library. It does not use UTF or JIT.
+
+#forbid_utf
+
+# Compile several patterns, push them onto the stack, and then write them
+# all to a file.
+
+#pattern push
+
+/(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT))
+  (?(DEFINE)
+  (?<NAME_PAT>[a-z]+)
+  (?<ADDRESS_PAT>\d+)
+  )/x
+/^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i
+
+#save testsaved1
+
+# Do it again for some more patterns.
+
+/(*MARK:A)(*SKIP:B)(C|X)/mark
+** Ignored when compiled pattern is stacked with 'push': mark
+/(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames
+
+#save testsaved2
+#pattern -push
+
+# Reload the patterns, then pop them one by one and check them.
+
+#load testsaved1
+#load testsaved2
+
+#pop info
+Capturing subpattern count = 2
+Max back reference = 2
+Named capturing subpatterns:
+  n   1
+  n   2
+Options: dupnames
+Starting code units: b f 
+Subject length lower bound = 6
+    foofoo             
+ 0: foofoo
+ 1: foo
+    barbar
+ 0: barbar
+ 1: <unset>
+ 2: bar
+    
+#pop mark
+    C
+ 0: C
+ 1: C
+MK: A
+\= Expect no match     
+    D 
+No match, mark = A
+    
+#pop
+    AmanaplanacanalPanama   
+ 0: AmanaplanacanalPanama
+ 1: <unset>
+ 2: <unset>
+ 3: AmanaplanacanalPanama
+ 4: A
+
+#pop info
+Capturing subpattern count = 4
+Named capturing subpatterns:
+  ADDR          2
+  ADDRESS_PAT   4
+  NAME          1
+  NAME_PAT      3
+Options: extended
+Subject length lower bound = 3
+    metcalfe 33
+ 0: metcalfe 33
+ 1: metcalfe
+ 2: 33
+    
+# Check for an error when different tables are used.
+
+/abc/push,tables=1
+/xyz/push,tables=2
+#save testsaved1
+Serialization failed: error -30: patterns do not all use the same character tables
+
+#pop
+    xyz
+ 0: xyz
+
+#pop
+    abc
+ 0: abc
+
+#pop should give an error
+** Can't pop off an empty stack
+    pqr
+
+# End of testinput20
diff --git a/testdata/testoutput21 b/testdata/testoutput21
new file mode 100644
index 0000000..6bf3f60
--- /dev/null
+++ b/testdata/testoutput21
@@ -0,0 +1,94 @@
+# These are tests of \C that do not involve UTF. They are not run when \C is
+# disabled by compiling with --enable-never-backslash-C.
+
+/\C+\D \C+\d \C+\S \C+\s \C+\W \C+\w \C+. \C+\R \C+\H \C+\h \C+\V \C+\v \C+\Z \C+\z \C+$/Bx
+------------------------------------------------------------------
+        Bra
+        AllAny+
+        \D
+        AllAny+
+        \d
+        AllAny+
+        \S
+        AllAny+
+        \s
+        AllAny+
+        \W
+        AllAny+
+        \w
+        AllAny+
+        Any
+        AllAny+
+        \R
+        AllAny+
+        \H
+        AllAny+
+        \h
+        AllAny+
+        \V
+        AllAny+
+        \v
+        AllAny+
+        \Z
+        AllAny++
+        \z
+        AllAny+
+        $
+        Ket
+        End
+------------------------------------------------------------------
+
+/\D+\C \d+\C \S+\C \s+\C \W+\C \w+\C .+\C \R+\C \H+\C \h+\C \V+\C \v+\C a+\C \n+\C \C+\C/Bx
+------------------------------------------------------------------
+        Bra
+        \D+
+        AllAny
+        \d+
+        AllAny
+        \S+
+        AllAny
+        \s+
+        AllAny
+        \W+
+        AllAny
+        \w+
+        AllAny
+        Any+
+        AllAny
+        \R+
+        AllAny
+        \H+
+        AllAny
+        \h+
+        AllAny
+        \V+
+        AllAny
+        \v+
+        AllAny
+        a+
+        AllAny
+        \x0a+
+        AllAny
+        AllAny+
+        AllAny
+        Ket
+        End
+------------------------------------------------------------------
+
+/ab\Cde/never_backslash_c
+Failed: error 183 at offset 3: using \C is disabled by the application
+
+/ab\Cde/info
+Capturing subpattern count = 0
+Contains \C
+First code unit = 'a'
+Last code unit = 'e'
+Subject length lower bound = 5
+    abXde
+ 0: abXde
+    
+/(?<=ab\Cde)X/
+    abZdeX
+ 0: X
+
+# End of testinput21
diff --git a/testdata/testoutput22-16 b/testdata/testoutput22-16
new file mode 100644
index 0000000..ca1fd76
--- /dev/null
+++ b/testdata/testoutput22-16
@@ -0,0 +1,167 @@
+# Tests of \C when Unicode support is available. Note that \C is not supported
+# for DFA matching in UTF mode, so this test is not run with -dfa. The output
+# of this test is different in 8-, 16-, and 32-bit modes. Some tests may match
+# in some widths and not in others.
+
+/ab\Cde/utf,info
+Capturing subpattern count = 0
+Contains \C
+Options: utf
+First code unit = 'a'
+Last code unit = 'e'
+Subject length lower bound = 0
+    abXde
+ 0: abXde
+
+# This should produce an error diagnostic (\C in UTF lookbehind)
+
+/(?<=ab\Cde)X/utf
+Failed: error 136 at offset 10: \C is not allowed in a lookbehind assertion
+
+# Autopossessification tests
+
+/\C+\X \X+\C/Bx
+------------------------------------------------------------------
+        Bra
+        AllAny+
+        extuni
+        extuni+
+        AllAny
+        Ket
+        End
+------------------------------------------------------------------
+
+/\C+\X \X+\C/Bx,utf
+------------------------------------------------------------------
+        Bra
+        Anybyte+
+        extuni
+        extuni+
+        Anybyte
+        Ket
+        End
+------------------------------------------------------------------
+
+/\C\X*TӅ;

+{0,6}\v+
F
+/utf
+\= Expect no match
+    Ӆ\x0a
+No match
+
+/\C(\W?ſ)'?{{/utf
+\= Expect no match
+    \\C(\\W?ſ)'?{{
+No match
+
+/X(\C{3})/utf
+    X\x{1234}
+No match
+    X\x{11234}Y
+ 0: X\x{11234}Y
+ 1: \x{11234}Y
+    X\x{11234}YZ
+ 0: X\x{11234}Y
+ 1: \x{11234}Y
+
+/X(\C{4})/utf
+    X\x{1234}YZ
+No match
+    X\x{11234}YZ
+ 0: X\x{11234}YZ
+ 1: \x{11234}YZ
+    X\x{11234}YZW
+ 0: X\x{11234}YZ
+ 1: \x{11234}YZ
+
+/X\C*/utf
+    XYZabcdce
+ 0: XYZabcdce
+
+/X\C*?/utf
+    XYZabcde
+ 0: X
+
+/X\C{3,5}/utf
+    Xabcdefg
+ 0: Xabcde
+    X\x{1234}
+No match
+    X\x{1234}YZ
+ 0: X\x{1234}YZ
+    X\x{1234}\x{512}
+No match
+    X\x{1234}\x{512}YZ
+ 0: X\x{1234}\x{512}YZ
+    X\x{11234}Y
+ 0: X\x{11234}Y
+    X\x{11234}YZ
+ 0: X\x{11234}YZ
+    X\x{11234}\x{512}
+ 0: X\x{11234}\x{512}
+    X\x{11234}\x{512}YZ
+ 0: X\x{11234}\x{512}YZ
+    X\x{11234}\x{512}\x{11234}Z
+ 0: X\x{11234}\x{512}\x{11234}
+
+/X\C{3,5}?/utf
+    Xabcdefg
+ 0: Xabc
+    X\x{1234}
+No match
+    X\x{1234}YZ
+ 0: X\x{1234}YZ
+    X\x{1234}\x{512}
+No match
+    X\x{11234}Y
+ 0: X\x{11234}Y
+    X\x{11234}YZ
+ 0: X\x{11234}Y
+    X\x{11234}\x{512}YZ
+ 0: X\x{11234}\x{512}
+    X\x{11234}
+No match
+
+/a\Cb/utf
+    aXb
+ 0: aXb
+    a\nb
+ 0: a\x{0a}b
+    a\x{100}b
+ 0: a\x{100}b
+
+/a\C\Cb/utf
+    a\x{100}b
+No match
+    a\x{12257}b
+ 0: a\x{12257}b
+    a\x{12257}\x{11234}b
+No match
+
+/ab\Cde/utf
+    abXde
+ 0: abXde
+
+# This one is here not because it's different to Perl, but because the way
+# the captured single code unit is displayed. (In Perl it becomes a character,
+# and you can't tell the difference.)
+
+/X(\C)(.*)/utf
+    X\x{1234}
+ 0: X\x{1234}
+ 1: \x{1234}
+ 2: 
+    X\nabc
+ 0: X\x{0a}abc
+ 1: \x{0a}
+ 2: abc
+
+# This one is here because Perl gives out a grumbly error message (quite
+# correctly, but that messes up comparisons).
+
+/a\Cb/utf
+\= Expect no match in 8-bit mode
+    a\x{100}b
+ 0: a\x{100}b
+
+# End of testinput22
diff --git a/testdata/testoutput22-32 b/testdata/testoutput22-32
new file mode 100644
index 0000000..91d0b05
--- /dev/null
+++ b/testdata/testoutput22-32
@@ -0,0 +1,165 @@
+# Tests of \C when Unicode support is available. Note that \C is not supported
+# for DFA matching in UTF mode, so this test is not run with -dfa. The output
+# of this test is different in 8-, 16-, and 32-bit modes. Some tests may match
+# in some widths and not in others.
+
+/ab\Cde/utf,info
+Capturing subpattern count = 0
+Contains \C
+Options: utf
+First code unit = 'a'
+Last code unit = 'e'
+Subject length lower bound = 0
+    abXde
+ 0: abXde
+
+# This should produce an error diagnostic (\C in UTF lookbehind)
+
+/(?<=ab\Cde)X/utf
+Failed: error 136 at offset 10: \C is not allowed in a lookbehind assertion
+
+# Autopossessification tests
+
+/\C+\X \X+\C/Bx
+------------------------------------------------------------------
+        Bra
+        AllAny+
+        extuni
+        extuni+
+        AllAny
+        Ket
+        End
+------------------------------------------------------------------
+
+/\C+\X \X+\C/Bx,utf
+------------------------------------------------------------------
+        Bra
+        Anybyte+
+        extuni
+        extuni+
+        Anybyte
+        Ket
+        End
+------------------------------------------------------------------
+
+/\C\X*TӅ;

+{0,6}\v+
F
+/utf
+\= Expect no match
+    Ӆ\x0a
+No match
+
+/\C(\W?ſ)'?{{/utf
+\= Expect no match
+    \\C(\\W?ſ)'?{{
+No match
+
+/X(\C{3})/utf
+    X\x{1234}
+No match
+    X\x{11234}Y
+No match
+    X\x{11234}YZ
+ 0: X\x{11234}YZ
+ 1: \x{11234}YZ
+
+/X(\C{4})/utf
+    X\x{1234}YZ
+No match
+    X\x{11234}YZ
+No match
+    X\x{11234}YZW
+ 0: X\x{11234}YZW
+ 1: \x{11234}YZW
+
+/X\C*/utf
+    XYZabcdce
+ 0: XYZabcdce
+
+/X\C*?/utf
+    XYZabcde
+ 0: X
+
+/X\C{3,5}/utf
+    Xabcdefg
+ 0: Xabcde
+    X\x{1234}
+No match
+    X\x{1234}YZ
+ 0: X\x{1234}YZ
+    X\x{1234}\x{512}
+No match
+    X\x{1234}\x{512}YZ
+ 0: X\x{1234}\x{512}YZ
+    X\x{11234}Y
+No match
+    X\x{11234}YZ
+ 0: X\x{11234}YZ
+    X\x{11234}\x{512}
+No match
+    X\x{11234}\x{512}YZ
+ 0: X\x{11234}\x{512}YZ
+    X\x{11234}\x{512}\x{11234}Z
+ 0: X\x{11234}\x{512}\x{11234}Z
+
+/X\C{3,5}?/utf
+    Xabcdefg
+ 0: Xabc
+    X\x{1234}
+No match
+    X\x{1234}YZ
+ 0: X\x{1234}YZ
+    X\x{1234}\x{512}
+No match
+    X\x{11234}Y
+No match
+    X\x{11234}YZ
+ 0: X\x{11234}YZ
+    X\x{11234}\x{512}YZ
+ 0: X\x{11234}\x{512}Y
+    X\x{11234}
+No match
+
+/a\Cb/utf
+    aXb
+ 0: aXb
+    a\nb
+ 0: a\x{0a}b
+    a\x{100}b
+ 0: a\x{100}b
+
+/a\C\Cb/utf
+    a\x{100}b
+No match
+    a\x{12257}b
+No match
+    a\x{12257}\x{11234}b
+ 0: a\x{12257}\x{11234}b
+
+/ab\Cde/utf
+    abXde
+ 0: abXde
+
+# This one is here not because it's different to Perl, but because the way
+# the captured single code unit is displayed. (In Perl it becomes a character,
+# and you can't tell the difference.)
+
+/X(\C)(.*)/utf
+    X\x{1234}
+ 0: X\x{1234}
+ 1: \x{1234}
+ 2: 
+    X\nabc
+ 0: X\x{0a}abc
+ 1: \x{0a}
+ 2: abc
+
+# This one is here because Perl gives out a grumbly error message (quite
+# correctly, but that messes up comparisons).
+
+/a\Cb/utf
+\= Expect no match in 8-bit mode
+    a\x{100}b
+ 0: a\x{100}b
+
+# End of testinput22
diff --git a/testdata/testoutput22-8 b/testdata/testoutput22-8
new file mode 100644
index 0000000..acb31d6
--- /dev/null
+++ b/testdata/testoutput22-8
@@ -0,0 +1,169 @@
+# Tests of \C when Unicode support is available. Note that \C is not supported
+# for DFA matching in UTF mode, so this test is not run with -dfa. The output
+# of this test is different in 8-, 16-, and 32-bit modes. Some tests may match
+# in some widths and not in others.
+
+/ab\Cde/utf,info
+Capturing subpattern count = 0
+Contains \C
+Options: utf
+First code unit = 'a'
+Last code unit = 'e'
+Subject length lower bound = 0
+    abXde
+ 0: abXde
+
+# This should produce an error diagnostic (\C in UTF lookbehind)
+
+/(?<=ab\Cde)X/utf
+Failed: error 136 at offset 10: \C is not allowed in a lookbehind assertion
+
+# Autopossessification tests
+
+/\C+\X \X+\C/Bx
+------------------------------------------------------------------
+        Bra
+        AllAny+
+        extuni
+        extuni+
+        AllAny
+        Ket
+        End
+------------------------------------------------------------------
+
+/\C+\X \X+\C/Bx,utf
+------------------------------------------------------------------
+        Bra
+        Anybyte+
+        extuni
+        extuni+
+        Anybyte
+        Ket
+        End
+------------------------------------------------------------------
+
+/\C\X*TӅ;

+{0,6}\v+
F
+/utf
+\= Expect no match
+    Ӆ\x0a
+No match
+
+/\C(\W?ſ)'?{{/utf
+\= Expect no match
+    \\C(\\W?ſ)'?{{
+No match
+
+/X(\C{3})/utf
+    X\x{1234}
+ 0: X\x{1234}
+ 1: \x{1234}
+    X\x{11234}Y
+ 0: X\x{f0}\x{91}\x{88}
+ 1: \x{f0}\x{91}\x{88}
+    X\x{11234}YZ
+ 0: X\x{f0}\x{91}\x{88}
+ 1: \x{f0}\x{91}\x{88}
+
+/X(\C{4})/utf
+    X\x{1234}YZ
+ 0: X\x{1234}Y
+ 1: \x{1234}Y
+    X\x{11234}YZ
+ 0: X\x{11234}
+ 1: \x{11234}
+    X\x{11234}YZW
+ 0: X\x{11234}
+ 1: \x{11234}
+
+/X\C*/utf
+    XYZabcdce
+ 0: XYZabcdce
+
+/X\C*?/utf
+    XYZabcde
+ 0: X
+
+/X\C{3,5}/utf
+    Xabcdefg
+ 0: Xabcde
+    X\x{1234}
+ 0: X\x{1234}
+    X\x{1234}YZ
+ 0: X\x{1234}YZ
+    X\x{1234}\x{512}
+ 0: X\x{1234}\x{512}
+    X\x{1234}\x{512}YZ
+ 0: X\x{1234}\x{512}
+    X\x{11234}Y
+ 0: X\x{11234}Y
+    X\x{11234}YZ
+ 0: X\x{11234}Y
+    X\x{11234}\x{512}
+ 0: X\x{11234}\x{d4}
+    X\x{11234}\x{512}YZ
+ 0: X\x{11234}\x{d4}
+    X\x{11234}\x{512}\x{11234}Z
+ 0: X\x{11234}\x{d4}
+
+/X\C{3,5}?/utf
+    Xabcdefg
+ 0: Xabc
+    X\x{1234}
+ 0: X\x{1234}
+    X\x{1234}YZ
+ 0: X\x{1234}
+    X\x{1234}\x{512}
+ 0: X\x{1234}
+    X\x{11234}Y
+ 0: X\x{f0}\x{91}\x{88}
+    X\x{11234}YZ
+ 0: X\x{f0}\x{91}\x{88}
+    X\x{11234}\x{512}YZ
+ 0: X\x{f0}\x{91}\x{88}
+    X\x{11234}
+ 0: X\x{f0}\x{91}\x{88}
+
+/a\Cb/utf
+    aXb
+ 0: aXb
+    a\nb
+ 0: a\x{0a}b
+    a\x{100}b
+No match
+
+/a\C\Cb/utf
+    a\x{100}b
+ 0: a\x{100}b
+    a\x{12257}b
+No match
+    a\x{12257}\x{11234}b
+No match
+
+/ab\Cde/utf
+    abXde
+ 0: abXde
+
+# This one is here not because it's different to Perl, but because the way
+# the captured single code unit is displayed. (In Perl it becomes a character,
+# and you can't tell the difference.)
+
+/X(\C)(.*)/utf
+    X\x{1234}
+ 0: X\x{1234}
+ 1: \x{e1}
+ 2: \x{88}\x{b4}
+    X\nabc
+ 0: X\x{0a}abc
+ 1: \x{0a}
+ 2: abc
+
+# This one is here because Perl gives out a grumbly error message (quite
+# correctly, but that messes up comparisons).
+
+/a\Cb/utf
+\= Expect no match in 8-bit mode
+    a\x{100}b
+No match
+
+# End of testinput22
diff --git a/testdata/testoutput23 b/testdata/testoutput23
new file mode 100644
index 0000000..1da1c39
--- /dev/null
+++ b/testdata/testoutput23
@@ -0,0 +1,8 @@
+# This test is run when PCRE2 has been built with --enable-never-backslash-C,
+# which disables the use of \C. All we can do is check that it gives the 
+# correct error message.
+
+/a\Cb/
+Failed: error 185 at offset 2: using \C is disabled in this PCRE2 library
+
+# End of testinput23
diff --git a/testdata/testoutput3 b/testdata/testoutput3
index dba3fc3..d9e8c5c 100644
--- a/testdata/testoutput3
+++ b/testdata/testoutput3
@@ -8,8 +8,7 @@
 #forbid_utf
 
 /^[\w]+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -18,8 +17,7 @@ No match
  0: �cole
 
 /^[\w]+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -28,30 +26,26 @@ No match
  0: \xc9
 
 /^[\W]+/locale=fr_FR
-    *** Failers
- 0: *** 
+\= Expect no match
     �cole
 No match
 
 /[\b]/
     \b
  0: \x08
-    *** Failers
-No match
+\= Expect no match
     a
 No match
 
 /[\b]/locale=fr_FR
     \b
  0: \x08
-    *** Failers
-No match
+\= Expect no match
     a
 No match
 
 /^\w+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -66,18 +60,14 @@ No match
  2: cole
 
 /(.+)\b(.+)/locale=fr_FR
-    *** Failers
- 0: *** Failers
- 1: *** 
- 2: Failers
+\= Expect no match
     �cole
 No match
 
 /�cole/i
     �cole
  0: \xc9cole
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -114,8 +104,7 @@ Subject length lower bound = 1
 /^[\xc8-\xc9]/
     �cole
  0: �
-    *** Failers 
-No match
+\= Expect no match
     �cole
 No match
 
diff --git a/testdata/testoutput3A b/testdata/testoutput3A
index 3044e45..9b00be8 100644
--- a/testdata/testoutput3A
+++ b/testdata/testoutput3A
@@ -8,8 +8,7 @@
 #forbid_utf
 
 /^[\w]+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -18,8 +17,7 @@ No match
  0: �cole
 
 /^[\w]+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -28,30 +26,26 @@ No match
  0: \xc9
 
 /^[\W]+/locale=fr_FR
-    *** Failers
- 0: *** 
+\= Expect no match
     �cole
 No match
 
 /[\b]/
     \b
  0: \x08
-    *** Failers
-No match
+\= Expect no match
     a
 No match
 
 /[\b]/locale=fr_FR
     \b
  0: \x08
-    *** Failers
-No match
+\= Expect no match
     a
 No match
 
 /^\w+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -66,18 +60,14 @@ No match
  2: cole
 
 /(.+)\b(.+)/locale=fr_FR
-    *** Failers
- 0: *** Failers
- 1: *** 
- 2: Failers
+\= Expect no match
     �cole
 No match
 
 /�cole/i
     �cole
  0: \xc9cole
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -114,8 +104,7 @@ Subject length lower bound = 1
 /^[\xc8-\xc9]/
     �cole
  0: �
-    *** Failers 
-No match
+\= Expect no match
     �cole
 No match
 
diff --git a/testdata/testoutput3B b/testdata/testoutput3B
index b99d6fd..b30fc5f 100644
--- a/testdata/testoutput3B
+++ b/testdata/testoutput3B
@@ -8,8 +8,7 @@
 #forbid_utf
 
 /^[\w]+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -18,8 +17,7 @@ No match
  0: �cole
 
 /^[\w]+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -28,30 +26,26 @@ No match
  0: \xc9
 
 /^[\W]+/locale=fr_FR
-    *** Failers
- 0: *** 
+\= Expect no match
     �cole
 No match
 
 /[\b]/
     \b
  0: \x08
-    *** Failers
-No match
+\= Expect no match
     a
 No match
 
 /[\b]/locale=fr_FR
     \b
  0: \x08
-    *** Failers
-No match
+\= Expect no match
     a
 No match
 
 /^\w+/
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -66,18 +60,14 @@ No match
  2: cole
 
 /(.+)\b(.+)/locale=fr_FR
-    *** Failers
- 0: *** Failers
- 1: *** 
- 2: Failers
+\= Expect no match
     �cole
 No match
 
 /�cole/i
     �cole
  0: \xc9cole
-    *** Failers
-No match
+\= Expect no match
     �cole
 No match
 
@@ -114,8 +104,7 @@ Subject length lower bound = 1
 /^[\xc8-\xc9]/
     �cole
  0: �
-    *** Failers 
-No match
+\= Expect no match
     �cole
 No match
 
diff --git a/testdata/testoutput4 b/testdata/testoutput4
index e8090a9..701d411 100644
--- a/testdata/testoutput4
+++ b/testdata/testoutput4
@@ -3,6 +3,7 @@
 # some of the property tests may differ because of different versions of
 # Unicode in use by PCRE2 and Perl.
 
+#newline_default lf anycrlf any
 #perltest
 
 /a.b/utf
@@ -12,8 +13,7 @@
  0: a\x{7f}b
     a\x{100}b
  0: a\x{100}b
-    *** Failers
-No match
+\= Expect no match
     a\nb
 No match
 
@@ -27,8 +27,7 @@ No match
     a\x{4000}\x{100}yb
  0: a\x{4000}\x{100}yb
  1: \x{4000}\x{100}y
-    *** Failers
-No match
+\= Expect no match
     a\x{4000}b
 No match
     ac\ncb
@@ -104,8 +103,7 @@ No match
     a\x{1234}\x{4321}\x{3412}b
  0: a\x{1234}\x{4321}\x{3412}b
  1: \x{1234}\x{4321}\x{3412}
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b
 No match
     ac\ncb
@@ -127,8 +125,7 @@ No match
     a\x{1234}\x{4321}\x{3412}\x{3421}b
  0: a\x{1234}\x{4321}\x{3412}\x{3421}b
  1: \x{1234}\x{4321}\x{3412}\x{3421}
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b
 No match
 
@@ -148,8 +145,7 @@ No match
     a\x{1234}\x{4321}\x{3412}\x{3421}b
  0: a\x{1234}\x{4321}\x{3412}\x{3421}b
  1: \x{1234}\x{4321}\x{3412}\x{3421}
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b
 No match
 
@@ -175,8 +171,7 @@ No match
     axxxxxbcdefghijb
  0: axxxxxb
  1: xxxxx
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b
 No match
     axxxxxxbcdefghijb
@@ -204,16 +199,14 @@ No match
     axxxxxbcdefghijb
  0: axxxxxb
  1: xxxxx
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b
 No match
     axxxxxxbcdefghijb
 No match
 
 /^[a\x{c0}]/utf
-    *** Failers
-No match
+\= Expect no match
     \x{100}
 No match
 
@@ -232,8 +225,7 @@ No match
 /(?:\x{100}){3}b/utf
     \x{100}\x{100}\x{100}b
  0: \x{100}\x{100}\x{100}b
-    *** Failers
-No match
+\= Expect no match
     \x{100}\x{100}b
 No match
 
@@ -242,8 +234,7 @@ No match
  0: \x{ab}
     \xc2\xab
  0: \x{ab}
-    *** Failers
-No match
+\= Expect no match
     \x00{ab}
 No match
 
@@ -254,8 +245,7 @@ No match
     \x{256}XYZ
  0: X
  1: \x{256}
-    *** Failers
-No match
+\= Expect no match
     XYZ
 No match
 
@@ -379,8 +369,7 @@ No match
 /\D+/utf
     12abcd34
  0: abcd
-    *** Failers
- 0: *** Failers
+\= Expect no match
     1234
 No match
 
@@ -389,8 +378,7 @@ No match
  0: abc
     12ab34
  0: ab
-    *** Failers
- 0: ***
+\= Expect no match
     1234
 No match
     12a34
@@ -401,8 +389,7 @@ No match
  0: ab
     12ab34
  0: ab
-    *** Failers
- 0: **
+\= Expect no match
     1234
 No match
     12a34
@@ -411,16 +398,13 @@ No match
 /\d+/utf
     12abcd34
  0: 12
-    *** Failers
-No match
 
 /\d{2,3}/utf
     12abcd34
  0: 12
     1234abcd
  0: 123
-    *** Failers
-No match
+\= Expect no match
     1.4
 No match
 
@@ -429,16 +413,14 @@ No match
  0: 12
     1234abcd
  0: 12
-    *** Failers
-No match
+\= Expect no match
     1.4
 No match
 
 /\S+/utf
     12abcd34
  0: 12abcd34
-    *** Failers
- 0: ***
+\= Expect no match
     \    \
 No match
 
@@ -447,8 +429,7 @@ No match
  0: 12a
     1234abcd
  0: 123
-    *** Failers
- 0: ***
+\= Expect no match
     \     \
 No match
 
@@ -457,8 +438,7 @@ No match
  0: 12
     1234abcd
  0: 12
-    *** Failers
- 0: **
+\= Expect no match
     \     \
 No match
 
@@ -466,8 +446,6 @@ No match
     12>      <34
  0: >      <
  0+ 34
-    *** Failers
-No match
 
 />\s{2,3}</utf,aftertext
     ab>  <cd
@@ -476,8 +454,7 @@ No match
     ab>   <ce
  0: >   <
  0+ ce
-    *** Failers
-No match
+\= Expect no match
     ab>    <cd
 No match
 
@@ -488,16 +465,14 @@ No match
     ab>   <ce
  0: >   <
  0+ ce
-    *** Failers
-No match
+\= Expect no match
     ab>    <cd
 No match
 
 /\w+/utf
     12      34
  0: 12
-    *** Failers
- 0: Failers
+\= Expect no match
     +++=*!
 No match
 
@@ -506,8 +481,7 @@ No match
  0: ab
     abcd ce
  0: abc
-    *** Failers
- 0: Fai
+\= Expect no match
     a.b.c
 No match
 
@@ -516,16 +490,14 @@ No match
  0: ab
     abcd ce
  0: ab
-    *** Failers
- 0: Fa
+\= Expect no match
     a.b.c
 No match
 
 /\W+/utf
     12====34
  0: ====
-    *** Failers
- 0: *** 
+\= Expect no match
     abcd
 No match
 
@@ -534,8 +506,7 @@ No match
  0: ===
     ab==cd
  0: ==
-    *** Failers
- 0: ***
+\= Expect no match
     a.b.c
 No match
 
@@ -544,8 +515,7 @@ No match
  0: ==
     ab==cd
  0: ==
-    *** Failers
- 0: **
+\= Expect no match
     a.b.c
 No match
 
@@ -556,8 +526,6 @@ No match
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers
-No match
 
 /[Z\x{100}]/utf
     Z\x{100}
@@ -566,126 +534,103 @@ No match
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers
-No match
 
 /[\x{100}\x{200}]/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   *** Failers
-No match
 
 /[\x{100}-\x{200}]/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   ab\x{111}cd
+    ab\x{111}cd
  0: \x{111}
-   *** Failers
-No match
 
 /[z-\x{200}]/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   ab\x{111}cd
+    ab\x{111}cd
  0: \x{111}
-   abzcd
+    abzcd
  0: z
-   ab|cd
+    ab|cd
  0: |
-   *** Failers
-No match
 
 /[Q\x{100}\x{200}]/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   Q?
+    Q?
  0: Q
-   *** Failers
-No match
 
 /[Q\x{100}-\x{200}]/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   ab\x{111}cd
+    ab\x{111}cd
  0: \x{111}
-   Q?
+    Q?
  0: Q
-   *** Failers
-No match
 
 /[Qz-\x{200}]/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   ab\x{111}cd
+    ab\x{111}cd
  0: \x{111}
-   abzcd
+    abzcd
  0: z
-   ab|cd
+    ab|cd
  0: |
-   Q?
+    Q?
  0: Q
-   *** Failers
-No match
 
 /[\x{100}\x{200}]{1,3}/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   ab\x{200}\x{100}\x{200}\x{100}cd
+    ab\x{200}\x{100}\x{200}\x{100}cd
  0: \x{200}\x{100}\x{200}
-   *** Failers
-No match
 
 /[\x{100}\x{200}]{1,3}?/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   ab\x{200}\x{100}\x{200}\x{100}cd
+    ab\x{200}\x{100}\x{200}\x{100}cd
  0: \x{200}
-   *** Failers
-No match
 
 /[Q\x{100}\x{200}]{1,3}/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   ab\x{200}\x{100}\x{200}\x{100}cd
+    ab\x{200}\x{100}\x{200}\x{100}cd
  0: \x{200}\x{100}\x{200}
-   *** Failers
-No match
 
 /[Q\x{100}\x{200}]{1,3}?/utf
-   ab\x{100}cd
+    ab\x{100}cd
  0: \x{100}
-   ab\x{200}cd
+    ab\x{200}cd
  0: \x{200}
-   ab\x{200}\x{100}\x{200}\x{100}cd
+    ab\x{200}\x{100}\x{200}\x{100}cd
  0: \x{200}
-   *** Failers
-No match
 
 /(?<=[\x{100}\x{200}])X/utf
     abc\x{200}X
  0: X
     abc\x{100}X
  0: X
-    *** Failers
-No match
+\= Expect no match
     X
 No match
 
@@ -696,16 +641,14 @@ No match
  0: X
     abQX
  0: X
-    *** Failers
-No match
+\= Expect no match
     X
 No match
 
 /(?<=[\x{100}\x{200}]{3})X/utf
     abc\x{100}\x{200}\x{100}X
  0: X
-    *** Failers
-No match
+\= Expect no match
     abc\x{200}X
 No match
     X
@@ -718,8 +661,7 @@ No match
  0: \x{150}X
     \x{500}X
  0: \x{500}X
-    *** Failers
-No match
+\= Expect no match
     \x{100}X
 No match
     \x{200}X
@@ -732,8 +674,7 @@ No match
  0: \x{150}X
     \x{500}X
  0: \x{500}X
-    *** Failers
-No match
+\= Expect no match
     \x{100}X
 No match
     \x{200}X
@@ -746,8 +687,7 @@ No match
  0: AX
     \x{500}X
  0: \x{500}X
-    *** Failers
-No match
+\= Expect no match
     \x{100}X
 No match
     \x{150}X
@@ -762,8 +702,7 @@ No match
  0: Z
     \x{100}
  0: \x{100}
-    *** Failers
-No match
+\= Expect no match
     \x{102}
 No match
     y
@@ -788,22 +727,27 @@ No match
  0: \x{123}
 
 /^[ac]*b/utf
+\= Expect no match
   xb
 No match
 
 /^[ac\x{100}]*b/utf
+\= Expect no match
   xb
 No match
 
 /^[^x]*b/i,utf
+\= Expect no match
   xb
 No match
 
 /^[^x]*b/utf
+\= Expect no match
   xb
 No match
 
 /^\d*b/utf
+\= Expect no match
   xb
 No match
 
@@ -1077,10 +1021,12 @@ No match
  0: 
 
 /(abc)\1/i,utf
+\= Expect no match
    abc
 No match
 
 /(abc)\1/utf
+\= Expect no match
    abc
 No match
 
@@ -1233,30 +1179,35 @@ MK: a\x{a3}b
 /^\d*\w{4}/utf
     1234
  0: 1234
+\= Expect no match     
     123
 No match
 
 /^[^b]*\w{4}/utf
     aaaa
  0: aaaa
+\= Expect no match     
     aaa
 No match
 
 /^[^b]*\w{4}/i,utf
     aaaa
  0: aaaa
+\= Expect no match     
     aaa
 No match
 
 /^\x{100}*.{4}/utf
     \x{100}\x{100}\x{100}\x{100}
  0: \x{100}\x{100}\x{100}\x{100}
+\= Expect no match     
     \x{100}\x{100}\x{100}
 No match
 
 /^\x{100}*.{4}/i,utf
     \x{100}\x{100}\x{100}\x{100}
  0: \x{100}\x{100}\x{100}\x{100}
+\= Expect no match     
     \x{100}\x{100}\x{100}
 No match
 
@@ -1279,64 +1230,56 @@ No match
  0: \x{7f}\x{c0}\x{30f}\x{660}\x{66c}\x{f01}\x{1680}<
     \np\x{300}9!\$ < 
  0: \x{0a}p\x{300}9!$ <
-    ** Failers 
-No match
+\= Expect no match     
     ap\x{300}9!\$ < 
 No match
   
 /^\PC/utf
     X
  0: X
-    ** Failers 
- 0: *
+\= Expect no match     
     \x7f
 No match
   
 /^\PL/utf
     9
  0: 9
-    ** Failers 
- 0: *
+\= Expect no match     
     \x{c0}
 No match
   
 /^\PM/utf
     X
  0: X
-    ** Failers 
- 0: *
+\= Expect no match     
     \x{30f}
 No match
   
 /^\PN/utf
     X
  0: X
-    ** Failers 
- 0: *
+\= Expect no match     
     \x{660}
 No match
   
 /^\PP/utf
     X
  0: X
-    ** Failers 
-No match
+\= Expect no match 
     \x{66c}
 No match
   
 /^\PS/utf
     X
  0: X
-    ** Failers 
- 0: *
+\= Expect no match 
     \x{f01}
 No match
   
 /^\PZ/utf
     X
  0: X
-    ** Failers 
- 0: *
+\= Expect no match 
     \x{1680}
 No match
     
@@ -1345,40 +1288,35 @@ No match
  0: \x{17}
     \x{09f} 
  0: \x{9f}
-    ** Failers
-No match
+\= Expect no match
     \x{0600} 
 No match
   
 /^\p{Cf}/utf
     \x{601}
  0: \x{601}
-    ** Failers
-No match
+\= Expect no match
     \x{09f} 
 No match
   
 /^\p{Cn}/utf
     \x{e0000}
  0: \x{e0000}
-    ** Failers
-No match
+\= Expect no match
     \x{09f} 
 No match
   
 /^\p{Co}/utf
     \x{f8ff}
  0: \x{f8ff}
-    ** Failers
-No match
+\= Expect no match
     \x{09f} 
 No match
   
 /^\p{Ll}/utf
     a
  0: a
-    ** Failers 
-No match
+\= Expect no match 
     Z
 No match
     \x{e000}  
@@ -1387,8 +1325,7 @@ No match
 /^\p{Lm}/utf
     \x{2b0}
  0: \x{2b0}
-    ** Failers
-No match
+\= Expect no match
     a 
 No match
   
@@ -1405,8 +1342,7 @@ No match
  0: \x{4db4}
     \x{4db5}     
  0: \x{4db5}
-    ** Failers
-No match
+\= Expect no match
     a 
 No match
     \x{2b0}
@@ -1417,8 +1353,7 @@ No match
 /^\p{Lt}/utf
     \x{1c5}
  0: \x{1c5}
-    ** Failers
-No match
+\= Expect no match
     a 
 No match
     \x{2b0}
@@ -1427,16 +1362,14 @@ No match
 /^\p{Lu}/utf
     A
  0: A
-    ** Failers
-No match
+\= Expect no match
     \x{2b0}
 No match
   
 /^\p{Mc}/utf
     \x{903}
  0: \x{903}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{300}
@@ -1445,8 +1378,7 @@ No match
 /^\p{Me}/utf
     \x{488}
  0: \x{488}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{903}
@@ -1457,8 +1389,7 @@ No match
 /^\p{Mn}/utf
     \x{300}
  0: \x{300}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{903}
@@ -1471,16 +1402,14 @@ No match
  0: \x{6f0}\x{6f1}\x{6f2}\x{6f3}\x{6f4}\x{6f5}\x{6f6}\x{6f7}\x{6f8}\x{6f9}
     \x{966}\x{967}\x{968}\x{969}\x{96a}\x{96b}\x{96c}\x{96d}\x{96e}\x{96f}\x{970}
  0: \x{966}\x{967}\x{968}\x{969}\x{96a}\x{96b}\x{96c}\x{96d}\x{96e}\x{96f}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
   
 /^\p{Nl}/utf
     \x{16ee}
  0: \x{16ee}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{966}
@@ -1491,8 +1420,7 @@ No match
  0: \x{b2}
     \x{b3}
  0: \x{b3}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{16ee}
@@ -1503,8 +1431,7 @@ No match
  0: _
     \x{203f}
  0: \x{203f}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     -
@@ -1517,8 +1444,7 @@ No match
  0: -
     \x{58a}
  0: \x{58a}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1533,8 +1459,7 @@ No match
  0: }
     \x{f3b}
  0: \x{f3b}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1553,8 +1478,7 @@ No match
  0: \x{bb}
     \x{2019}
  0: \x{2019}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1565,8 +1489,7 @@ No match
  0: \x{ab}
     \x{2018}
  0: \x{2018}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1577,8 +1500,7 @@ No match
  0: !
     \x{37e}
  0: \x{37e}
-    ** Failers
- 0: *
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1593,8 +1515,7 @@ No match
  0: {
     \x{f3c}
  0: \x{f3c}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     )
@@ -1609,8 +1530,7 @@ No match
 /^\p{Sk}/utf
     \x{2c2}
  0: \x{2c2}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{9f2}
@@ -1619,8 +1539,7 @@ No match
 /^\p{Sm}+/utf
     +<|~\x{ac}\x{2044}
  0: +<|~\x{ac}\x{2044}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{9f2}
@@ -1631,8 +1550,7 @@ No match
  0: \x{a6}
     \x{482} 
  0: \x{482}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{9f2}
@@ -1641,8 +1559,7 @@ No match
 /^\p{Zl}/utf
     \x{2028}
  0: \x{2028}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{2029}
@@ -1651,83 +1568,80 @@ No match
 /^\p{Zp}/utf
     \x{2029}
  0: \x{2029}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{2028}
 No match
   
 /\p{Nd}+(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}AB
  1: AB
   
 /\p{Nd}+?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}
  1: \x{661}\x{662}
   
 /\p{Nd}{2,}(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}AB
  1: AB
   
 /\p{Nd}{2,}?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}A
  1: \x{662}A
   
 /\p{Nd}*(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}AB
  1: AB
   
 /\p{Nd}*?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}
  1: \x{660}\x{661}
   
 /\p{Nd}{2}(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}A
  1: \x{662}A
   
 /\p{Nd}{2,3}(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}AB
  1: AB
   
 /\p{Nd}{2,3}?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}A
  1: \x{662}A
   
 /\p{Nd}?(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}
  1: \x{661}\x{662}
   
 /\p{Nd}??(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}
  1: \x{660}\x{661}
   
 /\p{Nd}*+(..)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}AB
  1: AB
   
 /\p{Nd}*+(...)/utf
-      \x{660}\x{661}\x{662}ABC
+    \x{660}\x{661}\x{662}ABC
  0: \x{660}\x{661}\x{662}ABC
  1: ABC
   
 /\p{Nd}*+(....)/utf
-      ** Failers
- 0: ** F
- 1: ** F
-      \x{660}\x{661}\x{662}ABC
+\= Expect no match
+    \x{660}\x{661}\x{662}ABC
 No match
   
 /(?<=A\p{Nd})XYZ/utf
@@ -1737,8 +1651,7 @@ No match
  0: XYZ
     ABA\x{660}XYZpqr
  0: XYZ
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     XYZ     
@@ -1751,48 +1664,51 @@ No match
  0: XYZ
     XYZ 
  0: XYZ
-    ** Failers
-No match
+\= Expect no match
     WXYZ 
 No match
 
 /[\P{Nd}]+/utf
     abcd
  0: abcd
-    ** Failers
- 0: ** Failers
+\= Expect no match
     1234
 No match
 
 /\D+/utf
-    11111111111111111111111111111111111111111111111111111111111111111111111
-No match
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-     
-/\P{Nd}+/utf
+\= Expect no match
     11111111111111111111111111111111111111111111111111111111111111111111111
 No match
+     
+/\P{Nd}+/utf
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-
-/[\D]+/utf
+\= Expect no match
     11111111111111111111111111111111111111111111111111111111111111111111111
 No match
+
+/[\D]+/utf
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-
-/[\P{Nd}]+/utf
+\= Expect no match
     11111111111111111111111111111111111111111111111111111111111111111111111
 No match
+
+/[\P{Nd}]+/utf
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-
-/[\D\P{Nd}]+/utf
+\= Expect no match
     11111111111111111111111111111111111111111111111111111111111111111111111
 No match
+
+/[\D\P{Nd}]+/utf
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
+No match
 
 /\pL/utf
     a
@@ -1811,8 +1727,7 @@ No match
  0: A
     aZ
  0: Z
-    ** Failers
- 0: F
+\= Expect no match
     abc   
 No match
 
@@ -1821,16 +1736,14 @@ No match
  0: a
     Az
  0: z
-    ** Failers
- 0: a
+\= Expect no match
     ABC   
 No match
 
 /A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
  0: A\x{391}\x{10427}\x{ff3a}\x{1fb0}
-    ** Failers
-No match
+\= Expect no match
     a\x{391}\x{10427}\x{ff3a}\x{1fb0}   
 No match
     A\x{3b1}\x{10427}\x{ff3a}\x{1fb0}
@@ -1917,9 +1830,7 @@ No match
  2: A
 
 /^\X(.)/utf
-    *** Failers
- 0: **
- 1: *
+\= Expect no match
     A\x{300}\x{301}\x{302}
 No match
 
@@ -1964,16 +1875,14 @@ No match
 /^\p{Han}+/utf
     \x{2e81}\x{3007}\x{2f804}\x{31a0}
  0: \x{2e81}\x{3007}\x{2f804}
-    ** Failers
-No match
+\= Expect no match
     \x{2e7f}  
 No match
 
 /^\P{Katakana}+/utf
     \x{3105}
  0: \x{3105}
-    ** Failers
- 0: ** Failers
+\= Expect no match
     \x{30ff}  
 No match
 
@@ -1982,16 +1891,14 @@ No match
  0: \x{6e9}
     \x{060b}
  0: \x{60b}
-    ** Failers
-No match
+\= Expect no match
     X\x{06e9}   
 No match
 
 /^[\P{Yi}]/utf
     \x{2f800}
  0: \x{2f800}
-    ** Failers
- 0: *
+\= Expect no match
     \x{a014}
 No match
     \x{a4c6}   
@@ -2002,14 +1909,12 @@ No match
  0: AX
     \x{1234}XYZ 
  0: \x{1234}X
-    ** Failers
-No match
+\= Expect no match
     X  
 No match
     
 /^\P{Any}X/utf
-    ** Failers
-No match
+\= Expect no match
     AX
 No match
     
@@ -2020,16 +1925,14 @@ No match
  0: AX
     \x{1234}XYZ 
  0: \x{1234}X
-    ** Failers
-No match
+\= Expect no match
     ABXYZ   
 No match
 
 /^\P{Any}?X/utf
     XYZ
  0: X
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ 
@@ -2044,14 +1947,12 @@ No match
  0: \x{1234}X
     A\x{1234}XYZ
  0: A\x{1234}X
-    ** Failers
-No match
+\= Expect no match
     XYZ
 No match
 
 /^\P{Any}+X/utf
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2070,14 +1971,11 @@ No match
  0: \x{1234}X
     A\x{1234}XYZ
  0: A\x{1234}X
-    ** Failers
-No match
 
 /^\P{Any}*X/utf
     XYZ
  0: X
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2090,14 +1988,12 @@ No match
  0: AX
     \x{1234}XYZ 
  0: \x{1234}X
-    ** Failers
-No match
+\= Expect no match
     X  
 No match
     
 /^[\P{Any}]X/utf
-    ** Failers
-No match
+\= Expect no match
     AX
 No match
     
@@ -2108,16 +2004,14 @@ No match
  0: AX
     \x{1234}XYZ 
  0: \x{1234}X
-    ** Failers
-No match
+\= Expect no match
     ABXYZ   
 No match
 
 /^[\P{Any}]?X/utf
     XYZ
  0: X
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ 
@@ -2132,14 +2026,12 @@ No match
  0: \x{1234}X
     A\x{1234}XYZ
  0: A\x{1234}X
-    ** Failers
-No match
+\= Expect no match
     XYZ
 No match
 
 /^[\P{Any}]+X/utf
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2158,14 +2050,11 @@ No match
  0: \x{1234}X
     A\x{1234}XYZ
  0: A\x{1234}X
-    ** Failers
-No match
 
 /^[\P{Any}]*X/utf
     XYZ
  0: X
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2186,8 +2075,7 @@ No match
  0: \x{1234}\x{0a}\x{0d}\x{3456}x
 
 /^\P{Any}{3,5}?/utf
-    ** Failers
-No match
+\= Expect no match
     abcdefgh
 No match
     \x{1234}\n\r\x{3456}xyz 
@@ -2200,137 +2088,129 @@ No match
  0: aX
      \x{1c5}XY
  0: \x{1c5}X
-     ** Failers
-No match
-     \x{1bb}XY
+\= Expect no match
+    \x{1bb}XY
 No match
-     \x{2b0}XY
+    \x{2b0}XY
 No match
-     !XY      
+    !XY      
 No match
 
 /^[\p{L&}]X/utf
-     AXY
+    AXY
  0: AX
-     aXY
+    aXY
  0: aX
      \x{1c5}XY
  0: \x{1c5}X
-     ** Failers
-No match
-     \x{1bb}XY
+\= Expect no match
+    \x{1bb}XY
 No match
-     \x{2b0}XY
+    \x{2b0}XY
 No match
-     !XY      
+    !XY      
 No match
 
 /^\p{L&}+X/utf
-     AXY
+    AXY
  0: AX
-     aXY
+    aXY
  0: aX
-     AbcdeXyz 
+    AbcdeXyz 
  0: AbcdeX
-     \x{1c5}AbXY
+    \x{1c5}AbXY
  0: \x{1c5}AbX
-     abcDEXypqreXlmn 
+    abcDEXypqreXlmn 
  0: abcDEXypqreX
-     ** Failers
-No match
-     \x{1bb}XY
+\= Expect no match
+    \x{1bb}XY
 No match
-     \x{2b0}XY
+    \x{2b0}XY
 No match
-     !XY      
+    !XY      
 No match
 
 /^[\p{L&}]+X/utf
-     AXY
+    AXY
  0: AX
-     aXY
+    aXY
  0: aX
-     AbcdeXyz 
+    AbcdeXyz 
  0: AbcdeX
-     \x{1c5}AbXY
+    \x{1c5}AbXY
  0: \x{1c5}AbX
-     abcDEXypqreXlmn 
+    abcDEXypqreXlmn 
  0: abcDEXypqreX
-     ** Failers
-No match
-     \x{1bb}XY
+\= Expect no match
+    \x{1bb}XY
 No match
-     \x{2b0}XY
+    \x{2b0}XY
 No match
-     !XY      
+    !XY      
 No match
 
 /^\p{L&}+?X/utf
-     AXY
+    AXY
  0: AX
-     aXY
+    aXY
  0: aX
-     AbcdeXyz 
+    AbcdeXyz 
  0: AbcdeX
-     \x{1c5}AbXY
+    \x{1c5}AbXY
  0: \x{1c5}AbX
-     abcDEXypqreXlmn 
+    abcDEXypqreXlmn 
  0: abcDEX
-     ** Failers
-No match
-     \x{1bb}XY
+\= Expect no match
+    \x{1bb}XY
 No match
-     \x{2b0}XY
+    \x{2b0}XY
 No match
-     !XY      
+    !XY      
 No match
 
 /^[\p{L&}]+?X/utf
-     AXY
+    AXY
  0: AX
-     aXY
+    aXY
  0: aX
-     AbcdeXyz 
+    AbcdeXyz 
  0: AbcdeX
-     \x{1c5}AbXY
+    \x{1c5}AbXY
  0: \x{1c5}AbX
-     abcDEXypqreXlmn 
+    abcDEXypqreXlmn 
  0: abcDEX
-     ** Failers
-No match
-     \x{1bb}XY
+\= Expect no match
+    \x{1bb}XY
 No match
-     \x{2b0}XY
+    \x{2b0}XY
 No match
-     !XY      
+    !XY      
 No match
 
 /^\P{L&}X/utf
-     !XY
+    !XY
  0: !X
-     \x{1bb}XY
+    \x{1bb}XY
  0: \x{1bb}X
-     \x{2b0}XY
+    \x{2b0}XY
  0: \x{2b0}X
-     ** Failers
-No match
-     \x{1c5}XY
+\= Expect no match
+    \x{1c5}XY
 No match
-     AXY      
+    AXY      
 No match
 
 /^[\P{L&}]X/utf
-     !XY
+    !XY
  0: !X
-     \x{1bb}XY
+    \x{1bb}XY
  0: \x{1bb}X
-     \x{2b0}XY
+    \x{2b0}XY
  0: \x{2b0}X
-     ** Failers
-No match
-     \x{1c5}XY
+\= Expect no match
+    \x{1c5}XY
 No match
-     AXY      
+    AXY      
 No match
 
 /^(\p{Z}[^\p{C}\p{Z}]+)*$/
@@ -2362,15 +2242,18 @@ No match
  0: abc\xc4
 
 /\X{1,3}\d/
-  \x8aBCD
+\= Expect no match
+    \x8aBCD
 No match
   
 /\X?\d/
-  \x8aBCD 
+\= Expect no match
+    \x8aBCD 
 No match
 
 /\P{L}?\d/
-  \x8aBCD 
+\= Expect no match
+    \x8aBCD 
 No match
 
 /[\PPP\x8a]{1,}\x80/
@@ -2410,8 +2293,7 @@ No match
  0: \x{6ef}
     \x{6fa}  
  0: \x{6fa}
-    ** Failers
-No match
+\= Expect no match
     \x{650}
 No match
     \x{651}  
@@ -2450,8 +2332,7 @@ No match
  0: \x{655}
     \x{200c} 
  0: \x{200c}
-    ** Failers
-No match
+\= Expect no match
     \x{64a}
 No match
     \x{656}     
@@ -2478,8 +2359,7 @@ No match
  0: \x{104a0}
     \x{104a9}
  0: \x{104a9}
-    ** Failers
-No match
+\= Expect no match
     \x{1049e}
 No match
     \x{1049f}
@@ -2500,8 +2380,7 @@ No match
 /\x{a77d}\x{1d79}/utf
     \x{a77d}\x{1d79}
  0: \x{a77d}\x{1d79}
-    ** Failers 
-No match
+\= Expect no match 
     \x{1d79}\x{a77d} 
 No match
 
@@ -2604,14 +2483,12 @@ No match
  0: .+\x{a1}
 
 /\p{Zs}*?\R/
-    ** Failers
-No match
+\= Expect no match
     a\xFCb   
 No match
 
 /\p{Zs}*\R/
-    ** Failers 
-No match
+\= Expect no match 
     a\xFCb   
 No match
 
@@ -2804,11 +2681,12 @@ No match
  0+ 
 
 /\X*Z/utf,no_start_optimize
-  A\x{300}
+\= Expect no match
+    A\x{300}
 No match
 
 /\X*(.)/utf,no_start_optimize
-  A\x{1111}\x{ae4c}\x{1169}
+    A\x{1111}\x{ae4c}\x{1169}
  0: A\x{1111}
  1: \x{1111}
 
@@ -3400,12 +3278,14 @@ No match
 /^\p{Any}*\d{4}/utf
     1234
  0: 1234
+\= Expect no match
     123 
 No match
 
 /^\X*\w{4}/utf
     1234
  0: 1234
+\= Expect no match
     123  
 No match
 
@@ -3454,8 +3334,7 @@ No match
  0: \x{e0001}
     \x{e0020}\x{e0030}\x{e0040}\x{e0050}\x{e0060}\x{e0070}\x{e007f}
  0: \x{e0020}\x{e0030}\x{e0040}\x{e0050}\x{e0060}\x{e0070}\x{e007f}
-    ** Failers
-No match
+\= Expect no match
     \x{09}
 No match
     \x{0a}
@@ -3532,8 +3411,7 @@ No match
  0: \x{e0001}
     \x{e0020}\x{e0030}\x{e0040}\x{e0050}\x{e0060}\x{e0070}\x{e007f}
  0: \x{e0020}\x{e0030}\x{e0040}\x{e0050}\x{e0060}\x{e0070}\x{e007f}
-    ** Failers
- 0: ** Failers
+\= Expect no match
     \x{09}
 No match
     \x{1D}
@@ -3562,8 +3440,7 @@ No match
  0: \x{a1}\x{a7}
     \x{37e} 
  0: \x{37e}
-    ** Failers
-No match
+\= Expect no match
     abcde  
 No match
 
@@ -3574,8 +3451,7 @@ No match
  0: \x{2028}\x{2029}\x{202f}\x{2065}
     \x{3000}\x{e0002}\x{e001f}\x{e0080}
  0: \x{3000}\x{e0002}\x{e001f}\x{e0080}
-    ** Failers
-No match
+\= Expect no match
     Letter:ABC
 No match
     Mark:\x{300}\x{1d172}\x{1d17b}
@@ -3614,8 +3490,7 @@ No match
  0: \x{09}\x{1d}\x{85}\x{2028}\x{2029}\x{2065}
     \x{e0002}\x{e001f}\x{e0080}
  0: \x{e0002}\x{e001f}\x{e0080}
-    ** Failers
-No match
+\= Expect no match
     Space: \x{a0}
 No match
     \x{1680}\x{2000}\x{2001}\x{2002}\x{2003}\x{2004}\x{2005}
@@ -3664,8 +3539,7 @@ No match
 /^[[:^punct:]]+$/utf,ucp
     abcde  
  0: abcde
-    ** Failers
-No match
+\= Expect no match
     \$+<=>^`|~
 No match
     !\"#%&'()*,-./:;?@[\\]_{}
@@ -3730,6 +3604,7 @@ No match
  2: \x{23a}\x{2c65}\x{23a}
 
 /^(\x{23a})\1*(....)/i,utf
+\= Expect no match
     \x{23a}\x{2c65}\x{2c65}\x{2c65}
 No match
     \x{23a}\x{23a}\x{2c65}\x{23a}
@@ -3741,14 +3616,91 @@ No match
 
 "[\S\V\H]"utf
 
-/\C\X*TӅ;

-{0,6}\v+
F
-/utf
-    Ӆ\x0a
+/[^\p{Any}]*+x/utf
+    x
+ 0: x
+
+/[[:punct:]]/utf,ucp
+    \x{b4} 
+No match
+
+/[[:^ascii:]]/utf,ucp
+    \x{100}
+ 0: \x{100}
+    \x{200}
+ 0: \x{200}
+    \x{300}
+ 0: \x{300}
+    \x{37e}
+ 0: \x{37e}
+\= Expect no match     
+    aa
+No match
+    99
+No match
+    
+/[[:^ascii:]\w]/utf,ucp
+    aa
+ 0: a
+    99
+ 0: 9
+    gg
+ 0: g
+    \x{100}
+ 0: \x{100}
+    \x{200}
+ 0: \x{200}
+    \x{300}
+ 0: \x{300}
+    \x{37e}
+ 0: \x{37e}
+
+/[\w[:^ascii:]]/utf,ucp
+    aa
+ 0: a
+    99
+ 0: 9
+    gg
+ 0: g
+    \x{100}
+ 0: \x{100}
+    \x{200}
+ 0: \x{200}
+    \x{300}
+ 0: \x{300}
+    \x{37e}
+ 0: \x{37e}
+
+/[^[:ascii:]\W]/utf,ucp
+    \x{100}
+ 0: \x{100}
+    \x{200}
+ 0: \x{200}
+\= Expect no match     
+    aa
+No match
+    99
+No match
+    gg
+No match
+    \x{37e}
 No match
 
-/\C(\W?ſ)'?{{/utf
-    \\C(\\W?ſ)'?{{
+/[^[:^ascii:]\d]/utf,ucp
+    a
+ 0: a
+    ~
+ 0: ~
+    \a
+ 0: \x{07}
+    \x{7f}
+ 0: \x{7f}
+\= Expect no match
+    0
+No match
+    \x{389}
+No match
+    \x{20ac}
 No match
 
 # End of testinput4
diff --git a/testdata/testoutput5 b/testdata/testoutput5
index a99c12b..f19ad8c 100644
--- a/testdata/testoutput5
+++ b/testdata/testoutput5
@@ -11,14 +11,12 @@
 # test 4.
 
 /^[\p{Arabic}]/utf
-    ** Failers
-No match
+\= Expect no match
     \x{061c}
 No match
     
 /^[[:graph:]]+$/utf,ucp
-    ** Failers
-No match
+\= Expect no match
     \x{61c}
 No match
     \x{2066}
@@ -31,8 +29,7 @@ No match
 No match
 
 /^[[:print:]]+$/utf,ucp
-    ** Failers
- 0: ** Failers
+\= Expect no match
     \x{61c}
 No match
     \x{2066}
@@ -76,6 +73,7 @@ No match
  0: A\x{85}\x{2005}Z
     
 /^[[:graph:]]+$/utf,ucp
+\= Expect no match
     \x{180e}
 No match
 
@@ -88,6 +86,7 @@ No match
  0: \x{09}\x{0a}\x{1d} \x{85}\x{a0}\x{61c}\x{1680}\x{180e}
 
 /^[[:^print:]]+$/utf,ucp
+\= Expect no match
     \x{180e}
 No match
 
@@ -182,10 +181,6 @@ Subject length lower bound = 3
     \x{212ab}\x{212ab}\x{212ab}\x{861}
  0: \x{212ab}\x{212ab}\x{212ab}
 
-/(?<=\C)X/utf
-Failed: error 136 at offset 6: \C is not allowed in a lookbehind assertion
-    Should produce an error diagnostic
-    
 /^[ab]/IB,utf
 ------------------------------------------------------------------
         Bra
@@ -200,8 +195,7 @@ Overall options: anchored utf
 Subject length lower bound = 1
     bar
  0: b
-    *** Failers
-No match
+\= Expect no match
     c
 No match
     \x{ff}
@@ -227,8 +221,7 @@ Subject length lower bound = 1
  0: \x{ff}
     \x{100}  
  0: \x{100}
-    *** Failers 
- 0: *
+\= Expect no match 
     aaa
 No match
   
@@ -251,8 +244,7 @@ No match
     \x{100}\x{100}"12" 
  0: \x{100}\x{100}"12"
  1: "12"
-    *** Failers 
-No match
+\= Expect no match 
     \x{100}\x{100}abcd
 No match
 
@@ -303,8 +295,7 @@ Failed: error 108 at offset 15: range out of order in character class
  0: \x{100}
     \x{104}
  0: \x{104}
-    *** Failers
-No match
+\= Expect no match
     \x{105}
 No match
     \x{ff}    
@@ -581,8 +572,7 @@ Matched, but too many substrings
  0: a\x{2028}b
     a\x{2029}b 
  0: a\x{2029}b
-    ** Failers
-No match
+\= Expect no match
     a\n\rb    
 No match
 
@@ -623,8 +613,7 @@ No match
  0: a\x{0a}\x{0d}b
     a\n\r\x{85}\x0cb 
  0: a\x{0a}\x{0d}\x{85}\x{0c}b
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
 
@@ -643,8 +632,7 @@ No match
  0: a\x{0a}\x{0d}\x{0a}\x{0d}b
     a\n\n\r\nb 
  0: a\x{0a}\x{0a}\x{0d}\x{0a}b
-    ** Failers
-No match
+\= Expect no match
     a\n\n\n\rb
 No match
     a\r
@@ -655,8 +643,7 @@ No match
  0: X X\x{0a}
     X\x09X\x0b
  0: X\x{09}X\x{0b}
-    ** Failers
-No match
+\= Expect no match
     \x{a0} X\x0a   
 No match
     
@@ -667,8 +654,7 @@ No match
  0: \x{09} \x{a0}\x{0a}\x{0b}\x{0c}\x{0d}
     \x09\x20\x{a0}\x0a\x0b\x0c
  0: \x{09} \x{a0}\x{0a}\x{0b}\x{0c}
-    ** Failers 
-No match
+\= Expect no match 
     \x09\x20\x{a0}\x0a\x0b
 No match
      
@@ -677,8 +663,7 @@ No match
  0: \x{3001}\x{3000}\x{2030}\x{2028}
     X\x{180e}X\x{85}
  0: X\x{180e}X\x{85}
-    ** Failers
-No match
+\= Expect no match
     \x{2009} X\x0a   
 No match
     
@@ -689,8 +674,7 @@ No match
  0: \x{09}\x{205f}\x{a0}\x{0a}\x{2029}\x{0c}\x{2028}
     \x09\x20\x{202f}\x0a\x0b\x0c
  0: \x{09} \x{202f}\x{0a}\x{0b}\x{0c}
-    ** Failers 
-No match
+\= Expect no match 
     \x09\x{200a}\x{a0}\x{2028}\x0b
 No match
      
@@ -755,8 +739,7 @@ Subject length lower bound = 3
  0: a\x{0a}b
     a\r\nb
  0: a\x{0d}\x{0a}b
-    ** Failers
-No match
+\= Expect no match
     a\x{85}b
 No match
     a\x0bb     
@@ -793,8 +776,7 @@ Subject length lower bound = 2
  0: a\x{0a}b
     a\r\nb
  0: a\x{0d}\x{0a}b
-    ** Failers
-No match
+\= Expect no match
     a\x{85}b
 No match
     a\x0bb     
@@ -817,14 +799,11 @@ Subject length lower bound = 2
  0: a\x{85}b
     a\x0bb     
  0: a\x{0b}b
-    ** Failers 
-No match
  
 /.*a.*=.b.*/utf,newline=any
     QQQ\x{2029}ABCaXYZ=!bPQR
  0: ABCaXYZ=!bPQR
-    ** Failers
-No match
+\= Expect no match
     a\x{2029}b
 No match
     \x61\xe2\x80\xa9\x62 
@@ -838,8 +817,7 @@ Failed: error 130 at offset 3: unknown POSIX class name
  0: a\x{1234}b
     a\nb 
  0: a\x{0a}b
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
     
@@ -848,8 +826,7 @@ No match
  0: aXb
     a\nX\nX\x{1234}b 
  0: a\x{0a}X\x{0a}X\x{1234}b
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
 
@@ -935,6 +912,7 @@ Partial match: X\x{123}\x{123}\x{123}
 Partial match: X\x{123}\x{123}\x{123}\x{123}
     
 /X\x{123}{2,4}b/utf
+\= Expect no match
     Xx\=ps
 No match
     X\x{123}x\=ps
@@ -947,6 +925,7 @@ No match
 No match
     
 /X\x{123}{2,4}?b/utf
+\= Expect no match
     Xx\=ps
 No match
     X\x{123}x\=ps
@@ -959,6 +938,7 @@ No match
 No match
     
 /X\x{123}{2,4}+b/utf
+\= Expect no match
     Xx\=ps
 No match
     X\x{123}x\=ps
@@ -1745,6 +1725,7 @@ Last code unit = 'y'
 Subject length lower bound = 2
 
 /(?<!^)ETA/utf
+\= Expect no match
     ETA
 No match
 
@@ -1874,8 +1855,7 @@ Subject length lower bound = 1
  0: 12-34
     12+\x{661}-34  
  0: 12+\x{661}-34
-    ** Failers
-No match
+\= Expect no match
     abcd  
 No match
 
@@ -1995,8 +1975,7 @@ No match
 /^\p{Cs}/utf
     \x{dfff}\=no_utf_check
  0: \x{dfff}
-    ** Failers
-No match
+\= Expect no match
     \x{09f} 
 No match
   
@@ -2021,8 +2000,7 @@ No match
  0: $\x{a2}\x{a3}\x{a4}\x{a5}
     \x{9f2}
  0: \x{9f2}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{2c2}
@@ -2039,8 +2017,7 @@ No match
  0: \x{2000}
     \x{2001}     
  0: \x{2001}
-    ** Failers
-No match
+\= Expect no match
     \x{2028}
 No match
     \x{200d} 
@@ -2052,16 +2029,14 @@ No match
 /\p{^Lu}/i,utf
     1234
  0: 1
-    ** Failers
- 0: *
+\= Expect no match
     ABC 
 No match
 
 /\P{Lu}/i,utf
     1234
  0: 1
-    ** Failers
- 0: *
+\= Expect no match
     ABC 
 No match
 
@@ -2070,8 +2045,7 @@ No match
  0: a
     Az
  0: z
-    ** Failers
- 0: a
+\= Expect no match
     ABC   
 No match
 
@@ -2080,8 +2054,7 @@ No match
  0: A
     a\x{10a0}B 
  0: \x{10a0}
-    ** Failers 
- 0: F
+\= Expect no match 
     a
 No match
     \x{1d00}  
@@ -2092,8 +2065,7 @@ No match
  0: A
     aZ
  0: Z
-    ** Failers
- 0: F
+\= Expect no match
     abc   
 No match
 
@@ -2182,16 +2154,14 @@ No match
  0: \x{a6c}
     \x{10a7}   
  0: \x{10a7}
-    ** Failers
-No match
+\= Expect no match
     _ABC   
 No match
 
 /^\p{Xan}+/utf
     ABCD1234\x{6ca}\x{a6c}\x{10a7}_
  0: ABCD1234\x{6ca}\x{a6c}\x{10a7}
-    ** Failers
-No match
+\= Expect no match
     _ABC   
 No match
 
@@ -2222,16 +2192,14 @@ No match
  0: \x{a6c}
     \x{10a7}   
  0: \x{10a7}
-    ** Failers
-No match
+\= Expect no match
     _ABC   
 No match
  
 /^[\p{Xan}]+/utf
     ABCD1234\x{6ca}\x{a6c}\x{10a7}_
  0: ABCD1234\x{6ca}\x{a6c}\x{10a7}
-    ** Failers
-No match
+\= Expect no match
     _ABC   
 No match
 
@@ -2240,8 +2208,7 @@ No match
  0: >\x{1680}
     >\x{a0} 
  0: >\x{a0}
-    ** Failers
-No match
+\= Expect no match
     \x{0b} 
 No match
 
@@ -2278,8 +2245,7 @@ No match
  0: >\x{1680}
     >\x{a0} 
  0: >\x{a0}
-    ** Failers
-No match
+\= Expect no match
     \x{0b} 
 No match
 
@@ -2324,8 +2290,7 @@ No match
  0: \x{10a7}
     _ABC    
  0: _
-    ** Failers
-No match
+\= Expect no match
     [] 
 No match
 
@@ -2362,8 +2327,7 @@ No match
  0: \x{10a7}
     _ABC 
  0: _
-    ** Failers
-No match
+\= Expect no match
     []   
 No match
  
@@ -2630,8 +2594,7 @@ No match
 /\b...\B/utf
     abc_
  0: abc
-    ** Failers 
- 0: Fai
+\= Expect no match 
     \x{37e}abc\x{376} 
 No match
     \x{37e}\x{376}\x{371}\x{393}\x{394} 
@@ -2825,10 +2788,12 @@ No match
 # These behaved oddly in Perl, so they are kept in this test 
 
 /(\x{23a}\x{23a}\x{23a})?\1/i,utf
+\= Expect no match
     \x{23a}\x{23a}\x{23a}\x{2c65}\x{2c65}
 No match
 
 /(ȺȺȺ)?\1/i,utf
+\= Expect no match
     ȺȺȺⱥⱥ
 No match
 
@@ -2843,10 +2808,12 @@ No match
  1: \x{23a}\x{23a}\x{23a}
 
 /(\x{23a}\x{23a}\x{23a})\1/i,utf
+\= Expect no match
     \x{23a}\x{23a}\x{23a}\x{2c65}\x{2c65}
 No match
 
 /(ȺȺȺ)\1/i,utf
+\= Expect no match
     ȺȺȺⱥⱥ
 No match
 
@@ -2887,8 +2854,7 @@ No match
  0: \x{1bc0}
     \x{1bff}
  0: \x{1bff}
-    ** Failers
-No match
+\= Expect no match
     \x{1bf4}
 No match
     
@@ -2897,8 +2863,7 @@ No match
  0: \x{11000}
     \x{1106f}
  0: \x{1106f}
-    ** Failers
-No match
+\= Expect no match
     \x{1104e}
 No match
     
@@ -2907,8 +2872,7 @@ No match
  0: \x{840}
     \x{85e}
  0: \x{85e}
-    ** Failers
-No match
+\= Expect no match
     \x{85c}
 No match
     \x{85d}    
@@ -2933,14 +2897,10 @@ No match
 /^a\X41z/alt_bsux,allow_empty_class,match_unset_backref,dupnames
     aX41z
  0: aX41z
-    *** Failers
-No match
+\= Expect no match
     aAz
 No match
 
-/(?<=ab\Cde)X/utf
-Failed: error 136 at offset 10: \C is not allowed in a lookbehind assertion
-
 /\X/
     a\=ps
  0: a
@@ -3138,8 +3098,7 @@ Subject length lower bound = 3
  0+ 
 
 /\x{3a3}++./i,utf,aftertext
-    ** Failers
-No match
+\= Expect no match
     \x{3a3}\x{3c3}\x{3c2}\x{3a3}\x{3c3}\x{3c2}
 No match
 
@@ -3179,24 +3138,29 @@ No match
         Ket
         End
 ------------------------------------------------------------------
+\= Expect no match
     ikt
 No match
 
 /is+t/i,utf
     iSs\x{17f}t
  0: iSs\x{17f}t
+\= Expect no match
     ikt
 No match
 
 /is+?t/i,utf
+\= Expect no match
     ikt
 No match
 
 /is?t/i,utf
+\= Expect no match
     ikt
 No match
 
 /is{2}t/i,utf
+\= Expect no match
     iskt
 No match
     
@@ -3211,80 +3175,70 @@ No match
  0: `
     \x{1234}abc
  0: \x{1234}
-    ** Failers
-No match
+\= Expect no match
     abc     
 No match
 
 /^\p{Xuc}+/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}\x{e000}
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\p{Xuc}+?/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\p{Xuc}+?\*/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}\x{e000}*
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\p{Xuc}++/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}\x{e000}
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\p{Xuc}{3,5}/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\p{Xuc}{3,5}?/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^[\p{Xuc}]/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^[\p{Xuc}]+/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}\x{e000}
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\P{Xuc}/utf
     abc
  0: a
-    ** Failers
- 0: *
+\= Expect no match
     $abc
 No match
     @abc
@@ -3297,8 +3251,7 @@ No match
 /^[\P{Xuc}]/utf
     abc
  0: a
-    ** Failers
- 0: *
+\= Expect no match
     $abc
 No match
     @abc
@@ -3843,7 +3796,7 @@ No match
         End
 ------------------------------------------------------------------
 
-/\D+\X \d+\X \S+\X \s+\X \W+\X \w+\X \C+\X \R+\X \H+\X \h+\X \V+\X \v+\X a+\X \n+\X .+\X/Bx
+/\D+\X \d+\X \S+\X \s+\X \W+\X \w+\X \R+\X \H+\X \h+\X \V+\X \v+\X a+\X \n+\X .+\X/Bx
 ------------------------------------------------------------------
         Bra
         \D+
@@ -3858,8 +3811,6 @@ No match
         extuni
         \w+
         extuni
-        AllAny+
-        extuni
         \R+
         extuni
         \H+
@@ -3898,7 +3849,7 @@ No match
         End
 ------------------------------------------------------------------
 
-/\X+\D \X+\d \X+\S \X+\s \X+\W \X+\w \X+. \X+\C \X+\R \X+\H \X+\h \X+\V \X+\v \X+\X \X+\Z \X+\z \X+$/Bx
+/\X+\D \X+\d \X+\S \X+\s \X+\W \X+\w \X+. \X+\R \X+\H \X+\h \X+\V \X+\v \X+\X \X+\Z \X+\z \X+$/Bx
 ------------------------------------------------------------------
         Bra
         extuni+
@@ -3916,8 +3867,6 @@ No match
         extuni+
         Any
         extuni+
-        AllAny
-        extuni+
         \R
         extuni+
         \H
@@ -4003,12 +3952,9 @@ Subject length lower bound = 1
  1: 123X\x{1234}Z123
 
 /(?<=abc)(|def)/g,utf,replace=<$0>
-      123abcáyzabcdef789abcሴqr
+    123abcáyzabcdef789abcሴqr
  4: 123abc<>\x{e1}yzabc<><def>789abc<>\x{1234}qr
 
-/[^\xff]((?1))/utf,debug
-Failed: error 140 at offset 11: recursion could loop indefinitely
-
 /[A-`]/iB,utf
 ------------------------------------------------------------------
         Bra
@@ -4050,4 +3996,169 @@ Failed: error 122 at offset 1227: unmatched closing parenthesis
 
 /$(&.+[\p{Me}].\s\xdcC*?(?(<y>))(?<!^)$C((;*?(R))+(?(R)){0,6}?|){12\x8a\X*?\x8a\x0b\xd1^9\3*+(\xc1,\k'P'\xb4)\xcc(z\z(?JJ)(?'X'8};(\x0b\xd1^9\?'3*+(\xc1.]k+\x0b'Pm'\xb4\xcc4'\xd1'(?'X'))?-%--\x95$9*\4'|\xd1(''%\x95*$9)#(?'R')3\x07?('P\xed')\\x16:;()\x1e\x10*:(?<y>)\xd1+!~:(?)''(d'E:yD!\s(?'R'\x1e;\x10:U))|')g!\xb0*){29+))#(?'P'})*?/
 
+"(*UTF)(*UCP)(.UTF).+X(\V+;\^(\D|)!999}(?(?C{7(?C')\H*\S*/^\x5\xa\\xd3\x85n?(;\D*(?m).[^mH+((*UCP)(*U:F)})(?!^)(?'"
+Failed: error 124 at offset 113: letter or underscore expected after (?< or (?'
+
+/[\pS#moq]/
+    =
+ 0: =
+
+/(*:a\x{12345}b\t(d\)c)xxx/utf,alt_verbnames,mark
+    cxxxz
+ 0: xxx
+MK: a\x{12345}b\x{09}(d)c
+
+/abcd/utf,replace=x\x{824}y\o{3333}z(\Q12\$34$$\x34\E5$$),substitute_extended
+    abcd
+ 1: x\x{824}y\x{6db}z(12\$34$$\x345$)
+
+/a(\x{e0}\x{101})(\x{c0}\x{102})/utf,replace=a\u$1\U$1\E$1\l$2\L$2\Eab\U\x{e0}\x{101}\L\x{d0}\x{160}\EDone,substitute_extended
+    a\x{e0}\x{101}\x{c0}\x{102}
+ 1: a\x{c0}\x{101}\x{c0}\x{100}\x{e0}\x{101}\x{e0}\x{102}\x{e0}\x{103}ab\x{c0}\x{100}\x{f0}\x{161}Done
+
+/((?<digit>\d)|(?<letter>\p{L}))/g,substitute_extended,replace=<${digit:+digit; :not digit; }${letter:+letter:not a letter}>
+    ab12cde
+ 7: <not digit; letter><not digit; letter><digit; not a letter><digit; not a letter><not digit; letter><not digit; letter><not digit; letter>
+
+/[\W\p{Any}]/B
+------------------------------------------------------------------
+        Bra
+        [\x00-/:-@[-^`{-\xff\p{Any}]
+        Ket
+        End
+------------------------------------------------------------------
+    abc
+ 0: a
+    123 
+ 0: 1
+
+/[\W\pL]/B
+------------------------------------------------------------------
+        Bra
+        [\x00-/:-@[-^`{-\xff\p{L}]
+        Ket
+        End
+------------------------------------------------------------------
+    abc
+ 0: a
+\= Expect no match
+    123     
+No match
+
+/(*UCP)(*UTF)[[:>:]]X/B
+------------------------------------------------------------------
+        Bra
+        \b
+        AssertB
+        Reverse
+        prop Xwd
+        Ket
+        X
+        Ket
+        End
+------------------------------------------------------------------
+
+/abc/utf,replace=xyz
+    abc\=zero_terminate
+ 1: xyz
+
+/a[[:punct:]b]/ucp,bincode
+------------------------------------------------------------------
+        Bra
+        a
+        [b[:punct:]]
+        Ket
+        End
+------------------------------------------------------------------
+
+/a[[:punct:]b]/utf,ucp,bincode
+------------------------------------------------------------------
+        Bra
+        a
+        [b[:punct:]]
+        Ket
+        End
+------------------------------------------------------------------
+
+/a[b[:punct:]]/utf,ucp,bincode
+------------------------------------------------------------------
+        Bra
+        a
+        [b[:punct:]]
+        Ket
+        End
+------------------------------------------------------------------
+
+/[[:^ascii:]]/utf,ucp,bincode
+------------------------------------------------------------------
+        Bra
+        [\x80-\xff] (neg)
+        Ket
+        End
+------------------------------------------------------------------
+
+/[[:^ascii:]\w]/utf,ucp,bincode
+------------------------------------------------------------------
+        Bra
+        [\x80-\xff\p{Xwd}\x{100}-\x{10ffff}]
+        Ket
+        End
+------------------------------------------------------------------
+
+/[\w[:^ascii:]]/utf,ucp,bincode
+------------------------------------------------------------------
+        Bra
+        [\x80-\xff\p{Xwd}\x{100}-\x{10ffff}]
+        Ket
+        End
+------------------------------------------------------------------
+
+/[^[:ascii:]\W]/utf,ucp,bincode
+------------------------------------------------------------------
+        Bra
+        [^\x00-\x7f\P{Xwd}]
+        Ket
+        End
+------------------------------------------------------------------
+    \x{de}
+ 0: \x{de}
+    \x{200}
+ 0: \x{200}
+\= Expect no match     
+    \x{300}
+No match
+    \x{37e}
+No match
+
+/[[:^ascii:]a]/utf,ucp,bincode
+------------------------------------------------------------------
+        Bra
+        [a\x80-\xff] (neg)
+        Ket
+        End
+------------------------------------------------------------------
+
+/L(?#(|++<!(2)?/B,utf,no_auto_possess,auto_callout
+------------------------------------------------------------------
+        Bra
+        Callout 255 0 14
+        L?
+        Callout 255 14 0
+        Ket
+        End
+------------------------------------------------------------------
+
+/L(?#(|++<!(2)?/B,utf,ucp,auto_callout
+------------------------------------------------------------------
+        Bra
+        Callout 255 0 14
+        L?+
+        Callout 255 14 0
+        Ket
+        End
+------------------------------------------------------------------
+
+/(*UTF)C\x09((?<!'(?x)!*H? #\xcc\x9a[^$]/
+Failed: error 114 at offset 39: missing closing parenthesis
+
 # End of testinput5 
diff --git a/testdata/testoutput6 b/testdata/testoutput6
index 0fef124..9ae092b 100644
--- a/testdata/testoutput6
+++ b/testdata/testoutput6
@@ -4,6 +4,7 @@
     
 #forbid_utf
 #subject dfa
+#newline_default lf anycrlf any
      
 /abc/
     abc
@@ -22,8 +23,7 @@
  0: abc
     abbbbbbc
  0: abbbbbbc
-    *** Failers 
-No match
+\= Expect no match 
     ac
 No match
     ab
@@ -78,8 +78,7 @@ Matched, but offsets vector is too small to show all matches
 /^abc/
     abcdef
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xyzabc
 No match
     xyz\nabc    
@@ -90,16 +89,14 @@ No match
  0: abc
     xyz\nabc    
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xyzabc
 No match
     
 /\Aabc/
     abcdef
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xyzabc
 No match
     xyz\nabc    
@@ -108,8 +105,7 @@ No match
 /\Aabc/m
     abcdef
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xyzabc
 No match
     xyz\nabc    
@@ -120,8 +116,7 @@ No match
  0: abc
     xyzabc\=offset=3
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xyzabc    
 No match
     xyzabc\=offset=2
@@ -132,8 +127,7 @@ No match
  0: x9yzz
     x0y+z
  0: x0y+z
-    *** Failers
-No match
+\= Expect no match
     xyz
 No match
     xxy0z     
@@ -144,8 +138,7 @@ No match
  0: x yzz
     x y+z
  0: x y+z
-    *** Failers
-No match
+\= Expect no match
     xyz
 No match
     xxyyz
@@ -154,8 +147,7 @@ No match
 /x\wy\Wz/
     xxy+z
  0: xxy+z
-    *** Failers
-No match
+\= Expect no match
     xxy0z
 No match
     x+y+z         
@@ -166,8 +158,7 @@ No match
  0: x+y
     x-y
  0: x-y
-    *** Failers
-No match
+\= Expect no match
     x\ny
 No match
     
@@ -186,8 +177,7 @@ No match
  0: a+bc\x0adp+q
     x\nyp+q 
  0: x\x0ayp+q
-    *** Failers 
-No match
+\= Expect no match 
     a\nbc\ndp+q
 No match
     a+bc\ndp\nq
@@ -198,8 +188,7 @@ No match
 /a\d\z/
     ba0
  0: a0
-    *** Failers
-No match
+\= Expect no match
     ba0\n
 No match
     ba0\ncd   
@@ -208,8 +197,7 @@ No match
 /a\d\z/m
     ba0
  0: a0
-    *** Failers
-No match
+\= Expect no match
     ba0\n
 No match
     ba0\ncd   
@@ -220,8 +208,7 @@ No match
  0: a0
     ba0\n
  0: a0
-    *** Failers
-No match
+\= Expect no match
     ba0\ncd   
 No match
 
@@ -230,8 +217,7 @@ No match
  0: a0
     ba0\n
  0: a0
-    *** Failers
-No match
+\= Expect no match
     ba0\ncd   
 No match
 
@@ -240,8 +226,7 @@ No match
  0: a0
     ba0\n
  0: a0
-    *** Failers
-No match
+\= Expect no match
     ba0\ncd   
 No match
 
@@ -252,8 +237,6 @@ No match
  0: a0
     ba0\ncd   
  0: a0
-    *** Failers
-No match
 
 /abc/i
     abc
@@ -288,8 +271,7 @@ No match
  0: xxxyz
     axxxxyzq
  0: xxxyz
-    *** Failers
-No match
+\= Expect no match
     ax
 No match
     axx     
@@ -300,8 +282,7 @@ No match
  0: xxxyz
     axxxxyzq
  0: xxxyz
-    *** Failers
-No match
+\= Expect no match
     ax
 No match
     axx     
@@ -320,8 +301,7 @@ No match
  0: xxxyz
     axxxxyzq
  0: xxxyz
-    *** Failers
-No match
+\= Expect no match
     ax
 No match
     axx     
@@ -340,12 +320,7 @@ No match
  2: bcd
  3: bc
  4: b
-    *** Failers
- 0: *** F
- 1: *** 
- 2: ***
- 3: **
- 4: *
+\= Expect no match
     aaaaa   
 No match
 
@@ -360,13 +335,6 @@ No match
  3: bc
  4: b
  5: 
-    *** Failers
- 0: *** F
- 1: *** 
- 2: ***
- 3: **
- 4: *
- 5: 
     aaaaa   
  0: 
     
@@ -384,10 +352,7 @@ No match
  0: bcdef
  1: bcde
  2: bcd
-    *** Failers
- 0: *** F
- 1: *** 
- 2: ***
+\= Expect no match
     axya
 No match
     axa
@@ -410,16 +375,14 @@ No match
 /\d+/
     ab1234c56
  0: 1234
-    *** Failers
-No match
+\= Expect no match
     xyz
 No match
     
 /\D+/
     ab123c56
  0: ab
-    *** Failers
- 0: *** Failers
+\= Expect no match
     789
 No match
     
@@ -428,8 +391,7 @@ No match
  0: 5A
     ABC
  0: A
-    *** Failers
-No match
+\= Expect no match
     XYZ
 No match
     
@@ -440,8 +402,6 @@ No match
  0: BA
     9ABC             
  0: A
-    *** Failers
-No match
 
 /a+/
     aaaa
@@ -458,8 +418,7 @@ No match
  0: abcdxyz
     axyz
  0: axyz
-    *** Failers
-No match
+\= Expect no match
     xyz
 No match
     
@@ -474,8 +433,7 @@ No match
  0: 12X
     123X
  0: 123X
-    *** Failers
-No match
+\= Expect no match
     X
 No match
     1X
@@ -492,8 +450,7 @@ No match
  0: c9
     d04
  0: d0
-    *** Failers
-No match
+\= Expect no match
     e45
 No match
     abcd      
@@ -516,8 +473,7 @@ No match
  0: abcd1
     1234  
  0: 1
-    *** Failers
-No match
+\= Expect no match
     e45
 No match
     abcd      
@@ -534,8 +490,7 @@ No match
  0: d0
     abcd1234
  0: abcd1
-    *** Failers
-No match
+\= Expect no match
     1234  
 No match
     e45
@@ -560,8 +515,7 @@ No match
  0: d0
     1234  
  0: 1
-    *** Failers
-No match
+\= Expect no match
     abcd1234
 No match
     e45
@@ -572,8 +526,7 @@ No match
  0: ab4
     bcd93
  0: bcd9
-    *** Failers
-No match
+\= Expect no match
     1234 
 No match
     a36 
@@ -590,16 +543,13 @@ No match
  0: abcabcabc4
     42xyz 
  0: 4
-    *** Failers
-No match
 
 /^(abc)+\d/
     abc45
  0: abc4
     abcabcabc45
  0: abcabcabc4
-    *** Failers
-No match
+\= Expect no match
     42xyz 
 No match
 
@@ -608,8 +558,7 @@ No match
  0: abc4
     42xyz 
  0: 4
-    *** Failers
-No match
+\= Expect no match
     abcabcabc45
 No match
 
@@ -618,8 +567,7 @@ No match
  0: abcabc4
     abcabcabc45
  0: abcabcabc4
-    *** Failers
-No match
+\= Expect no match
     abcabcabcabc45
 No match
     abc45
@@ -650,8 +598,7 @@ No match
  0: a(b)c
     a(b(c))d  
  0: a(b(c))d
-    *** Failers)
-No match
+\= Expect no match)
     a(b(c)d  
 No match
 
@@ -666,8 +613,7 @@ No match
 /^(?>a*)\d/
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa9876
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa9
-    *** Failers 
-No match
+\= Expect no match 
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 No match
 
@@ -684,8 +630,7 @@ No match
  0: <abc<>def>
     <abc<>      
  0: <>
-    *** Failers
-No match
+\= Expect no match
     <abc
 No match
 
@@ -694,8 +639,7 @@ No match
  0: abc:
     12                             
  0: 12
-    *** Failers                     
-No match
+\= Expect no match                     
     123                       
 No match
     xyz                        
@@ -706,8 +650,7 @@ No match
  0: abc:
     12         
  0: 12
-    *** Failers
-No match
+\= Expect no match
     123
 No match
     xyz    
@@ -716,8 +659,7 @@ No match
 /^(?=abc)\w{5}:$/
     abcde:                          
  0: abcde:
-    *** Failers                     
-No match
+\= Expect no match                     
     abc.. 
 No match
     123                       
@@ -728,8 +670,7 @@ No match
 /^(?!abc)\d\d$/
     12         
  0: 12
-    *** Failers
-No match
+\= Expect no match
     abcde:
 No match
     abc..  
@@ -744,8 +685,7 @@ No match
  0: 123
     wxy123z
  0: 123
-    *** Failers
-No match
+\= Expect no match
     123abc
 No match
 
@@ -754,8 +694,7 @@ No match
  0: 123
     mno123456 
  0: 123
-    *** Failers
-No match
+\= Expect no match
     abc12345
 No match
     wxy123z
@@ -841,8 +780,7 @@ No match
 /^abc/
     abcdef
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abcdef\=notbol
 No match
 
@@ -856,8 +794,7 @@ No match
  1: 
     xyz\=notempty
  0: xyz
-    *** Failers
- 0: 
+\= Expect no match
     bcd\=notempty
 No match
     
@@ -866,8 +803,7 @@ No match
  0: xyz
     xyz\n
  0: xyz
-    *** Failers
-No match
+\= Expect no match
     xyz\=noteol
 No match
     xyz\n\=noteol
@@ -884,8 +820,7 @@ No match
  0: xyz
     xyz\n\=noteol
  0: xyz
-    *** Failers
-No match
+\= Expect no match
     xyz\=noteol
 No match
 
@@ -894,8 +829,7 @@ No match
  0: abc
     defabcxyz\=offset=3
  0: abc
-    *** Failers 
-No match
+\= Expect no match 
     defabcxyz
 No match
 
@@ -906,8 +840,7 @@ Partial match: ab
 Partial match: abcde
     abcdef\=ps
  0: abcdef
-    *** Failers
-No match
+\= Expect no match
     abx\=ps
 No match
 
@@ -928,8 +861,7 @@ Partial match: aaaa12345
  0: aa0z
     aaaa4444444444444z\=ps
  0: aaaa4444444444444z
-    *** Failers
-No match
+\= Expect no match
     az\=ps
 No match
     aaaaa\=ps
@@ -944,27 +876,20 @@ Partial match: abc
  0: def
    
 /(?<=foo)bar/
-   xyzfo\=ps
-No match
    foob\=ps,offset=2
 Partial match: foob
                <<<
    foobar...\=ps,dfa_restart,offset=4
  0: ar
-   xyzfo\=ps
-No match
    foobar\=offset=2
  0: bar
-   *** Failers
-No match
+\= Expect no match
    xyzfo\=ps
 No match
    obar\=dfa_restart
 No match
 
 /(ab*(cd|ef))+X/
-    adfadadaklhlkalkajhlkjahdfasdfasdfladsfjkj\=ps,noteol
-No match
     lkjhlkjhlkjhlkjhabbbbbbcdaefabbbbbbbefa\=ps,notbol,noteol
 Partial match: abbbbbbcdaefabbbbbbbefa
     cdabbbbbbbb\=ps,notbol,dfa_restart,noteol
@@ -973,14 +898,18 @@ Partial match: cdabbbbbbbb
 Partial match: efabbbbbbbbbbbbbbbb
     bbbbbbbbbbbbcdXyasdfadf\=ps,notbol,dfa_restart,noteol
  0: bbbbbbbbbbbbcdX
+\= Expect no match
+    adfadadaklhlkalkajhlkjahdfasdfasdfladsfjkj\=ps,noteol
+No match
 
 /the quick brown fox/
     the quick brown fox
  0: the quick brown fox
-    The quick brown FOX
-No match
     What do you know about the quick brown fox?
  0: the quick brown fox
+\= Expect no match
+    The quick brown FOX
+No match
     What do you know about THE QUICK BROWN FOX?
 No match
 
@@ -1059,8 +988,7 @@ No match
  0: aaaabxyzpqrrrabbxyyyypqAzz
     >>>>abcxyzpqrrrabbxyyyypqAzz
  0: abcxyzpqrrrabbxyyyypqAzz
-    *** Failers
-No match
+\= Expect no match
     abxyzpqrrabbxyyyypqAzz
 No match
     abxyzpqrrrrabbxyyyypqAzz
@@ -1079,8 +1007,7 @@ No match
  0: abczz
     abcabczz
  0: abcabczz
-    *** Failers
-No match
+\= Expect no match
     zz
 No match
     abcabcabczz
@@ -1105,8 +1032,7 @@ No match
  0: abbbbbbbbbbbc
     bbbbbbbbbbbac
  0: bbbbbbbbbbbac
-    *** Failers
-No match
+\= Expect no match
     aaac
 No match
     abbbbbbbbbbbac
@@ -1129,8 +1055,7 @@ No match
  0: abbbbbbbbbbbc
     bbbbbbbbbbbac
  0: bbbbbbbbbbbac
-    *** Failers
-No match
+\= Expect no match
     aaac
 No match
     abbbbbbbbbbbac
@@ -1147,8 +1072,7 @@ No match
  0: bbabc
     bababc
  0: bababc
-    *** Failers
-No match
+\= Expect no match
     bababbc
 No match
     babababc
@@ -1161,8 +1085,7 @@ No match
  0: bbabc
     bababc
  0: bababc
-    *** Failers
-No match
+\= Expect no match
     bababbc
 No match
     babababc
@@ -1185,8 +1108,7 @@ No match
  0: d
     ething
  0: e
-    *** Failers
-No match
+\= Expect no match
     fthing
 No match
     [thing
@@ -1203,8 +1125,7 @@ No match
  0: d
     ething
  0: e
-    *** Failers
-No match
+\= Expect no match
     athing
 No match
     fthing
@@ -1217,8 +1138,7 @@ No match
  0: [
     \\thing
  0: \
-    *** Failers
- 0: *
+\= Expect no match
     athing
 No match
     bthing
@@ -1237,8 +1157,7 @@ No match
  0: a
     fthing
  0: f
-    *** Failers
- 0: *
+\= Expect no match
     ]thing
 No match
     cthing
@@ -1281,8 +1200,7 @@ No match
  0: 10
     100
  0: 100
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
 
@@ -1299,8 +1217,7 @@ No match
  0: xxx0
     xxx1234
  0: xxx1234
-    *** Failers
-No match
+\= Expect no match
     xxx
 No match
 
@@ -1311,12 +1228,11 @@ No match
  0: xx123
     123456
  0: 123456
-    *** Failers
-No match
-    123
-No match
     x1234
  0: x1234
+\= Expect no match
+    123
+No match
 
 /^.+?[0-9][0-9][0-9]$/
     x123
@@ -1325,18 +1241,16 @@ No match
  0: xx123
     123456
  0: 123456
-    *** Failers
-No match
-    123
-No match
     x1234
  0: x1234
+\= Expect no match
+    123
+No match
 
 /^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/
     abc!pqr=apquxz.ixr.zzz.ac.uk
  0: abc!pqr=apquxz.ixr.zzz.ac.uk
-    *** Failers
-No match
+\= Expect no match
     !pqr=apquxz.ixr.zzz.ac.uk
 No match
     abc!=apquxz.ixr.zzz.ac.uk
@@ -1349,7 +1263,8 @@ No match
 /:/
     Well, we need a colon: somewhere
  0: :
-    *** Fail if we don't
+\= Expect no match
+    No match without a colon
 No match
 
 /([\da-f:]+)$/i
@@ -1369,8 +1284,7 @@ No match
  0: def
     Any old stuff
  0: ff
-    *** Failers
-No match
+\= Expect no match
     0zzz
 No match
     gzzz
@@ -1385,8 +1299,7 @@ No match
  0: .1.2.3
     A.12.123.0
  0: A.12.123.0
-    *** Failers
-No match
+\= Expect no match
     .1.2.3333
 No match
     1.2.3
@@ -1399,8 +1312,7 @@ No match
  0: 1 IN SOA non-sp1 non-sp2(
     1    IN    SOA    non-sp1    non-sp2   (
  0: 1    IN    SOA    non-sp1    non-sp2   (
-    *** Failers
-No match
+\= Expect no match
     1IN SOA non-sp1 non-sp2(
 No match
 
@@ -1417,8 +1329,7 @@ No match
  0: sxk.zzz.ac.uk.
     x-.y-.
  0: x-.y-.
-    *** Failers
-No match
+\= Expect no match
     -abc.peq.
 No match
 
@@ -1431,8 +1342,7 @@ No match
  0: *.c3-b.c
     *.c-a.b-c
  0: *.c-a.b-c
-    *** Failers
-No match
+\= Expect no match
     *.0
 No match
     *.a-
@@ -1469,22 +1379,18 @@ No match
  0: "abcd" ;
     \"\" ; rhubarb
  0: "" ; rhubarb
-    *** Failers
-No match
+\= Expect no match
     \"1234\" : things
 No match
 
 /^$/
     \
  0: 
-    *** Failers
-No match
 
 /   ^    a   (?# begins with a)  b\sc (?# then b c) $ (?# then end)/x
     ab c
  0: ab c
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
     ab cde
@@ -1493,8 +1399,7 @@ No match
 /(?x)   ^    a   (?# begins with a)  b\sc (?# then b c) $ (?# then end)/
     ab c
  0: ab c
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
     ab cde
@@ -1505,8 +1410,7 @@ No match
  0: a bcd
     a b d
  0: a b d
-    *** Failers
-No match
+\= Expect no match
     abcd
 No match
     ab d
@@ -1621,8 +1525,7 @@ No match
  0: 12345678ab
     12345678__
  0: 12345678__
-    *** Failers
-No match
+\= Expect no match
     1234567
 No match
 
@@ -1635,8 +1538,7 @@ No match
  0: 12345
     aaaaa
  0: aaaaa
-    *** Failers
-No match
+\= Expect no match
     123456
 No match
 
@@ -1664,8 +1566,7 @@ No match
  0: From abcd  Mon Sep 01 12:33
     From abcd  Mon Sep  1 12:33:02 1997
  0: From abcd  Mon Sep  1 12:33
-    *** Failers
-No match
+\= Expect no match
     From abcd  Sep 01 12:33:02 1997
 No match
 
@@ -1696,8 +1597,7 @@ No match
 /^(\D*)(?=\d)(?!123)/
     abc456
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abc123
 No match
 
@@ -1723,16 +1623,14 @@ No match
 /(?!^)abc/
     the abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
 
 /(?=^)abc/
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     the abc
 No match
 
@@ -1988,8 +1886,7 @@ No match
     A missing angle <user\@some.where
  0: user@some.where
  1: user@some
-    *** Failers
-No match
+\= Expect no match
     The quick brown fox
 No match
 
@@ -2593,8 +2490,7 @@ No match
     A missing angle <user\@some.where
  0: user@some.where
  1: user@some
-    *** Failers
-No match
+\= Expect no match
     The quick brown fox
 No match
 
@@ -2627,8 +2523,7 @@ No match
  0: A\x00\x00Z
     An A\0\x0\0Z
  0: A\x00\x00\x00Z
-    *** Failers
-No match
+\= Expect no match
     A\0Z
 No match
     A\0\x0\0\x0Z
@@ -2645,8 +2540,7 @@ No match
  0: \x0d
     \tabc
  0: \x09
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
 
@@ -2662,8 +2556,7 @@ No match
  0: abbbc
     abbc
  0: abbc
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
     abbbbbc
@@ -2684,8 +2577,7 @@ No match
 /^[W-c]+$/
     WXY_^abc
  0: WXY_^abc
-    *** Failers
-No match
+\= Expect no match
     wxy
 No match
 
@@ -2714,8 +2606,7 @@ No match
 /^abc$/
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     qqq\nabc
 No match
     abc\nzzz
@@ -2728,8 +2619,7 @@ No match
  0: abc
     abc\n 
  0: abc
-    *** Failers
-No match
+\= Expect no match
     qqq\nabc
 No match
     abc\nzzz
@@ -2742,8 +2632,7 @@ No match
  0: abc\x0adef
 
 /\A(.)*\Z/m
-    *** Failers
- 0: *** Failers
+\= Expect no match
     abc\ndef
 No match
 
@@ -2756,24 +2645,21 @@ No match
 /[-az]+/
     az-
  0: az-
-    *** Failers
- 0: a
+\= Expect no match
     b
 No match
 
 /[az-]+/
     za-
  0: za-
-    *** Failers
- 0: a
+\= Expect no match
     b
 No match
 
 /[a\-z]+/
     a-z
  0: a-z
-    *** Failers
- 0: a
+\= Expect no match
     b
 No match
 
@@ -2784,16 +2670,14 @@ No match
 /[\d-]+/
     12-34
  0: 12-34
-    *** Failers
-No match
+\= Expect no match
     aaa
 No match
 
 /[\d-z]+/
     12-34z
  0: 12-34z
-    *** Failers
-No match
+\= Expect no match
     aaa
 No match
 
@@ -2804,8 +2688,7 @@ No match
 /\x20Z/
     the Zoo
  0:  Z
-    *** Failers
-No match
+\= Expect no match
     Zulu
 No match
 
@@ -2828,8 +2711,7 @@ No match
 /^a.b/newline=lf
     a\rb
  0: a\x0db
-    *** Failers
-No match
+\= Expect no match
     a\nb
 No match
 
@@ -2838,8 +2720,7 @@ No match
  0: abc
     abc\n
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abc\ndef
 No match
 
@@ -2918,13 +2799,7 @@ No match
  1: baNOTc
     bacccd
  0: baccc
-    *** Failers
- 0: *** Failers
- 1: *** Failer
- 2: *** Faile
- 3: *** Fail
- 4: *** Fai
- 5: *** Fa
+\= Expect no match
     anything
 No match
     b\bc   
@@ -2955,8 +2830,7 @@ No match
 /[^k]$/
     abc
  0: c
-    *** Failers
- 0: s
+\= Expect no match
     abk   
 No match
    
@@ -2967,8 +2841,7 @@ No match
  0: bc
     kabc 
  0: abc
-    *** Failers
- 0: ers
+\= Expect no match
     abk
 No match
     akb
@@ -2981,8 +2854,7 @@ No match
  0: 12345678@a.b.c.d
     123456789\@x.y.z
  0: 123456789@x.y.z
-    *** Failers
-No match
+\= Expect no match
     12345678\@x.y.uk
 No match
     1234567\@a.b.c.d       
@@ -3038,8 +2910,7 @@ No match
  1: .23
     1.875000282
  0: .875
-    *** Failers 
-No match
+\= Expect no match 
     1.235 
 No match
     
@@ -3134,8 +3005,7 @@ Matched, but offsets vector is too small to show all matches
 /^(\D*)(?=\d)(?!123)/
     ABC445
  0: ABC
-    *** Failers
-No match
+\= Expect no match
     ABC123
 No match
     
@@ -3144,8 +3014,7 @@ No match
  0: W46]
     -46]789
  0: -46]
-    *** Failers
-No match
+\= Expect no match
     Wall
 No match
     Zebra
@@ -3174,8 +3043,7 @@ No match
  0: ]
     \\backslash 
  0: \
-    *** Failers
-No match
+\= Expect no match
     -46]789
 No match
     well
@@ -3188,10 +3056,12 @@ No match
 /word (?:[a-zA-Z0-9]+ ){0,10}otherword/
   word cat dog elephant mussel cow horse canary baboon snake shark otherword
  0: word cat dog elephant mussel cow horse canary baboon snake shark otherword
+\= Expect no match
   word cat dog elephant mussel cow horse canary baboon snake shark
 No match
 
 /word (?:[a-zA-Z0-9]+ ){0,300}otherword/
+\= Expect no match
   word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
 No match
 
@@ -3267,25 +3137,25 @@ No match
  8: 
 
 /^(a){1,1}/
-    bcd
-No match
     abc
  0: a
     aab  
  0: a
-
-/^(a){1,2}/
+\= Expect no match
     bcd
 No match
+
+/^(a){1,2}/
     abc
  0: a
     aab  
  0: aa
  1: a
-
-/^(a){1,3}/
+\= Expect no match
     bcd
 No match
+
+/^(a){1,3}/
     abc
  0: a
     aab
@@ -3295,10 +3165,11 @@ No match
  0: aaa
  1: aa
  2: a
-
-/^(a){1,}/
+\= Expect no match
     bcd
 No match
+
+/^(a){1,}/
     abc
  0: a
     aab
@@ -3317,6 +3188,9 @@ No match
  5: aaa
  6: aa
  7: a
+\= Expect no match
+    bcd
+No match
 
 /.*\.gif/
     borfle\nbib.gif\nno
@@ -3381,8 +3255,7 @@ No match
  0: 1234X
     BarFoo 
  0: B
-    *** Failers
-No match
+\= Expect no match
     abcde\nBar  
 No match
 
@@ -3399,8 +3272,7 @@ No match
  0: abcde\x0a1234X
     BarFoo 
  0: B
-    *** Failers
-No match
+\= Expect no match
     abcde\nBar  
 No match
 
@@ -3417,8 +3289,7 @@ No match
  0: abcde\x0a1234X
     BarFoo 
  0: B
-    *** Failers 
-No match
+\= Expect no match 
     abcde\nBar  
 No match
 
@@ -3427,14 +3298,12 @@ No match
  0: abcde\x0a1234X
     BarFoo 
  0: B
-    *** Failers 
-No match
+\= Expect no match 
     abcde\nBar  
 No match
 
 /^.*B/
-    **** Failers
-No match
+\= Expect no match
     abc\nB
 No match
      
@@ -3485,32 +3354,28 @@ No match
 /^[abcdefghijklmnopqrstuvwxy0123456789]/
     n
  0: n
-    *** Failers 
-No match
+\= Expect no match 
     z 
 No match
 
 /abcde{0,0}/
     abcd
  0: abcd
-    *** Failers
-No match
+\= Expect no match
     abce  
 No match
 
 /ab[cd]{0,0}e/
     abe
  0: abe
-    *** Failers
-No match
+\= Expect no match
     abcde 
 No match
     
 /ab(c){0,0}d/
     abd
  0: abd
-    *** Failers
-No match
+\= Expect no match
     abcd   
 No match
 
@@ -3521,16 +3386,14 @@ No match
  0: ab
     abbbb
  0: abbbb
-    *** Failers
- 0: a
+\= Expect no match
     bbbbb    
 No match
     
 /ab\d{0}e/
     abe
  0: abe
-    *** Failers
-No match
+\= Expect no match
     ab1e   
 No match
     
@@ -3584,8 +3447,7 @@ No match
 /a.b/
     acb
  0: acb
-    *** Failers 
-No match
+\= Expect no match 
     a\nb   
 No match
     
@@ -3626,10 +3488,11 @@ No match
  0: bbbbbac
     
 /(?!\A)x/m
-    x\nb\n
-No match
     a\bx\n  
  0: x
+\= Expect no match
+    x\nb\n
+No match
     
 /\x0{ab}/
     \0{ab} 
@@ -3652,8 +3515,7 @@ No match
  0: foo
     rfoosh
  0: foo
-    *** Failers
-No match
+\= Expect no match
     barfoo
 No match
     towbarfoo
@@ -3662,8 +3524,7 @@ No match
 /\w{3}(?<!bar)foo/
     catfood
  0: catfoo
-    *** Failers
-No match
+\= Expect no match
     foo
 No match
     barfoo
@@ -3674,8 +3535,7 @@ No match
 /(?<=(foo)a)bar/
     fooabar
  0: bar
-    *** Failers
-No match
+\= Expect no match
     bar
 No match
     foobbar
@@ -3684,8 +3544,7 @@ No match
 /\Aabc\z/m
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abc\n   
 No match
     qqq\nabc
@@ -3696,6 +3555,7 @@ No match
 No match
 
 "(?>.*/)foo"
+\= Expect no match
     /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/
 No match
 
@@ -3708,16 +3568,14 @@ No match
  0: .230003938
     1.875000282
  0: .875000282
-    *** Failers 
-No match
+\= Expect no match 
     1.235 
 No match
 
 /^((?>\w+)|(?>\s+))*$/
     now is the time for all good men to come to the aid of the party
  0: now is the time for all good men to come to the aid of the party
-    *** Failers
-No match
+\= Expect no match
     this is not a line with only words and spaces!
 No match
     
@@ -3737,8 +3595,7 @@ No match
 /((?>\d+))(\w)/
     12345a
  0: 12345a
-    *** Failers
-No match
+\= Expect no match
     12345+ 
 No match
 
@@ -3786,8 +3643,7 @@ No match
  0: (abc)
     (abc(def)xyz)
  0: (abc(def)xyz)
-    *** Failers
-No match
+\= Expect no match
     ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa   
 No match
 
@@ -3796,8 +3652,7 @@ No match
  0: ab
     Ab
  0: Ab
-    *** Failers 
-No match
+\= Expect no match 
     aB
 No match
     AB
@@ -3806,8 +3661,7 @@ No match
 /(a (?x)b c)d e/
     a bcd e
  0: a bcd e
-    *** Failers
-No match
+\= Expect no match
     a b cd e
 No match
     abcd e   
@@ -3818,8 +3672,7 @@ No match
 /(a b(?x)c d (?-x)e f)/
     a bcde f
  0: a bcde f
-    *** Failers
-No match
+\= Expect no match
     abcdef  
 No match
 
@@ -3828,8 +3681,7 @@ No match
  0: abc
     aBc
  0: aBc
-    *** Failers
-No match
+\= Expect no match
     abC
 No match
     aBC  
@@ -3848,8 +3700,7 @@ No match
  0: abc
     aBc
  0: aBc
-    *** Failers 
-No match
+\= Expect no match 
     ABC
 No match
     abC
@@ -3862,8 +3713,7 @@ No match
  0: aBc
     aBBc
  0: aBBc
-    *** Failers 
-No match
+\= Expect no match 
     aBC
 No match
     aBBC
@@ -3874,8 +3724,7 @@ No match
  0: abcd
     abCd
  0: abCd
-    *** Failers
-No match
+\= Expect no match
     aBCd
 No match
     abcD     
@@ -3888,8 +3737,7 @@ No match
  0: more than MILLION
     more \n than Million 
  0: more \x0a than Million
-    *** Failers
-No match
+\= Expect no match
     MORE THAN MILLION    
 No match
     more \n than \n million 
@@ -3902,8 +3750,7 @@ No match
  0: more than MILLION
     more \n than Million 
  0: more \x0a than Million
-    *** Failers
-No match
+\= Expect no match
     MORE THAN MILLION    
 No match
     more \n than \n million 
@@ -3916,8 +3763,7 @@ No match
  0: aBbc
     aBBc 
  0: aBBc
-    *** Failers
-No match
+\= Expect no match
     Abc
 No match
     abAb    
@@ -3930,8 +3776,7 @@ No match
  0: abc
     aBc
  0: aBc
-    *** Failers
-No match
+\= Expect no match
     Ab 
 No match
     abC
@@ -3944,8 +3789,7 @@ No match
  0: xxc
     aBxxc
  0: xxc
-    *** Failers
-No match
+\= Expect no match
     Abxxc
 No match
     ABxxc
@@ -3958,8 +3802,7 @@ No match
  0: abc:
     12
  0: 12
-    *** Failers
-No match
+\= Expect no match
     123
 No match
     xyz    
@@ -3970,8 +3813,7 @@ No match
  0: abc:
     12
  0: 12
-    *** Failers
-No match
+\= Expect no match
     123
 No match
     xyz    
@@ -3986,8 +3828,7 @@ No match
  0: cat
     focat   
  0: cat
-    *** Failers
-No match
+\= Expect no match
     foocat  
 No match
 
@@ -4000,8 +3841,7 @@ No match
  0: cat
     focat   
  0: cat
-    *** Failers
-No match
+\= Expect no match
     foocat  
 No match
 
@@ -4182,8 +4022,7 @@ No match
  0: 12-sep-98
     12-09-98
  0: 12-09-98
-    *** Failers
-No match
+\= Expect no match
     sep-12-98
 No match
         
@@ -4212,8 +4051,7 @@ No match
  0: bbx
     BBx
  0: BBx
-    *** Failers
-No match
+\= Expect no match
     abcX
 No match
     aBCX
@@ -4238,8 +4076,7 @@ No match
  0: f
     France
  0: F
-    *** Failers
-No match
+\= Expect no match
     Africa     
 No match
 
@@ -4256,8 +4093,7 @@ No match
  0: z
     Zambesi
  0: Z
-    *** Failers
-No match
+\= Expect no match
     aCD  
 No match
     XY  
@@ -4266,8 +4102,7 @@ No match
 /(?<=foo\n)^bar/m
     foo\nbar
  0: bar
-    *** Failers
-No match
+\= Expect no match
     bar
 No match
     baz\nbar   
@@ -4280,16 +4115,14 @@ No match
  0: baz
     koobarbaz 
  0: baz
-    *** Failers
-No match
+\= Expect no match
     baz
 No match
     foobarbaz 
 No match
 
-/The following tests are taken from the Perl 5.005 test suite; some of them/
-/are compatible with 5.004, but I'd rather not have to sort them out./
-No match
+# The following tests are taken from the Perl 5.005 test suite; some of them
+# are compatible with 5.004, but I'd rather not have to sort them out.
 
 /abc/
     abc
@@ -4298,8 +4131,7 @@ No match
  0: abc
     ababc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xbc
 No match
     axc
@@ -4334,8 +4166,7 @@ No match
 /ab+bc/
     abbc
  0: abbc
-    *** Failers
-No match
+\= Expect no match
     abc
 No match
     abq
@@ -4358,8 +4189,7 @@ No match
  0: abbbbc
 
 /ab{4,5}bc/
-    *** Failers
-No match
+\= Expect no match
     abq
 No match
     abbbbc
@@ -4388,8 +4218,7 @@ No match
 /^abc$/
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     abbbbc
 No match
     abcc
@@ -4404,10 +4233,9 @@ No match
 /abc$/
     aabc
  0: abc
-    *** Failers
-No match
     aabc
  0: abc
+\= Expect no match
     aabcd
 No match
 
@@ -4432,8 +4260,7 @@ No match
 /a[bc]d/
     abd
  0: abd
-    *** Failers
-No match
+\= Expect no match
     axyzd
 No match
     abc
@@ -4466,8 +4293,7 @@ No match
 /a[^bc]d/
     aed
  0: aed
-    *** Failers
-No match
+\= Expect no match
     abd
 No match
     abd
@@ -4480,10 +4306,9 @@ No match
 /a[^]b]c/
     adc
  0: adc
-    *** Failers
-No match
     a-c
  0: a-c
+\= Expect no match
     a]c
 No match
 
@@ -4496,8 +4321,7 @@ No match
  0: a
 
 /\by\b/
-    *** Failers
-No match
+\= Expect no match
     xy
 No match
     yz
@@ -4506,8 +4330,7 @@ No match
 No match
 
 /\Ba\B/
-    *** Failers
- 0: a
+\= Expect no match
     a-
 No match
     -a
@@ -4534,10 +4357,7 @@ No match
 /\W/
     -
  0: -
-    *** Failers
- 0: *
-    -
- 0: -
+\= Expect no match
     a
 No match
 
@@ -4548,10 +4368,7 @@ No match
 /a\Sb/
     a-b
  0: a-b
-    *** Failers
-No match
-    a-b
- 0: a-b
+\= Expect no match
     a b
 No match
 
@@ -4562,10 +4379,7 @@ No match
 /\D/
     -
  0: -
-    *** Failers
- 0: *
-    -
- 0: -
+\= Expect no match
     1
 No match
 
@@ -4576,10 +4390,7 @@ No match
 /[\W]/
     -
  0: -
-    *** Failers
- 0: *
-    -
- 0: -
+\= Expect no match
     a
 No match
 
@@ -4590,10 +4401,7 @@ No match
 /a[\S]b/
     a-b
  0: a-b
-    *** Failers
-No match
-    a-b
- 0: a-b
+\= Expect no match
     a b
 No match
 
@@ -4604,10 +4412,7 @@ No match
 /[\D]/
     -
  0: -
-    *** Failers
- 0: *
-    -
- 0: -
+\= Expect no match
     1
 No match
 
@@ -4634,6 +4439,9 @@ No match
  0: a((b
 
 /a\\b/
+    a\\b
+ 0: a\b
+\= Expect no match
     a\b
 No match
 
@@ -4695,14 +4503,11 @@ No match
  0: cde
 
 /abc/
-    *** Failers
-No match
+\= Expect no match
     b
 No match
-    
 
 /a*/
-    
 
 /([abc])*d/
     abbbcd
@@ -4774,8 +4579,7 @@ No match
  0: adcdcde
 
 /a[bcd]+dcdcde/
-    *** Failers
-No match
+\= Expect no match
     abcde
 No match
     adcdcde
@@ -4804,8 +4608,7 @@ No match
  0: ij
     reffgz
  0: effgz
-    *** Failers
-No match
+\= Expect no match
     effg
 No match
     bcdd
@@ -4820,8 +4623,7 @@ No match
  0: a
 
 /multiple words of text/
-    *** Failers
-No match
+\= Expect no match
     aa
 No match
     uh-uh
@@ -4860,8 +4662,7 @@ No match
  0: ABC
     ABABC
  0: ABC
-    *** Failers
-No match
+\= Expect no match
     aaxabxbaxbbx
 No match
     XBC
@@ -4894,8 +4695,7 @@ No match
  0: ABBC
 
 /ab+bc/i
-    *** Failers
-No match
+\= Expect no match
     ABC
 No match
     ABQ
@@ -4920,8 +4720,7 @@ No match
  0: ABBBBC
 
 /ab{4,5}?bc/i
-    *** Failers
-No match
+\= Expect no match
     ABQ
 No match
     ABBBBC
@@ -4950,8 +4749,7 @@ No match
 /^abc$/i
     ABC
  0: ABC
-    *** Failers
-No match
+\= Expect no match
     ABBBBC
 No match
     ABCC
@@ -4986,10 +4784,9 @@ No match
  0: AXYZC
 
 /a.*c/i
-    *** Failers
-No match
     AABC
  0: AABC
+\= Expect no match
     AXYZD
 No match
 
@@ -5000,8 +4797,7 @@ No match
 /a[b-d]e/i
     ACE
  0: ACE
-    *** Failers
-No match
+\= Expect no match
     ABC
 No match
     ABD
@@ -5034,8 +4830,7 @@ No match
 /a[^-b]c/i
     ADC
  0: ADC
-    *** Failers
-No match
+\= Expect no match
     ABD
 No match
     A-C
@@ -5056,8 +4851,7 @@ No match
  0: EF
 
 /$b/i
-    *** Failers
-No match
+\= Expect no match
     A]C
 No match
     B
@@ -5074,6 +4868,7 @@ No match
  0: A((B
 
 /a\\b/i
+\= Expect no match
     A\=notbol
 No match
 
@@ -5152,7 +4947,6 @@ No match
 /abc/i
 
 /a*/i
-    
 
 /([abc])*d/i
     ABBBCD
@@ -5189,6 +4983,7 @@ No match
  0: HIJ
 
 /^(ab|cd)e/i
+\= Expect no match
     ABCDE
 No match
 
@@ -5250,8 +5045,7 @@ No match
  0: IJ
     REFFGZ
  0: EFFGZ
-    *** Failers
-No match
+\= Expect no match
     ADCDCDE
 No match
     EFFG
@@ -5276,8 +5070,7 @@ No match
  0: C
 
 /multiple words of text/i
-    *** Failers
-No match
+\= Expect no match
     AA
 No match
     UH-UH
@@ -5423,8 +5216,7 @@ No match
 /(?<=a)b/
     ab
  0: b
-    *** Failers
-No match
+\= Expect no match
     cb
 No match
     b
@@ -5489,8 +5281,7 @@ No match
  0: Ab
 
 /(?:(?i)a)b/
-    *** Failers
-No match
+\= Expect no match
     cb
 No match
     aB
@@ -5515,8 +5306,7 @@ No match
  0: Ab
 
 /(?i:a)b/
-    *** Failers
-No match
+\= Expect no match
     aB
 No match
     aB
@@ -5541,10 +5331,9 @@ No match
  0: aB
 
 /(?:(?-i)a)b/i
-    *** Failers
-No match
     aB
  0: aB
+\= Expect no match
     Ab
 No match
 
@@ -5559,8 +5348,7 @@ No match
  0: aB
 
 /(?:(?-i)a)b/i
-    *** Failers
-No match
+\= Expect no match
     Ab
 No match
     AB
@@ -5585,8 +5373,7 @@ No match
  0: aB
 
 /(?-i:a)b/i
-    *** Failers
-No match
+\= Expect no match
     AB
 No match
     Ab
@@ -5603,8 +5390,7 @@ No match
  0: aB
 
 /(?-i:a)b/i
-    *** Failers
-No match
+\= Expect no match
     Ab
 No match
     AB
@@ -5613,8 +5399,7 @@ No match
 /((?-i:a))b/i
 
 /((?-i:a.))b/i
-    *** Failers
-No match
+\= Expect no match
     AB
 No match
     a\nB
@@ -5650,8 +5435,7 @@ No match
  0: aaac
 
 /(?<![cd])b/
-    *** Failers
-No match
+\= Expect no match
     B\nB
 No match
     dbcb
@@ -5672,8 +5456,7 @@ No match
  0: b
 
 /^(?:a?b?)*$/
-    *** Failers
-No match
+\= Expect no match
     dbcb
 No match
     a--
@@ -5718,8 +5501,7 @@ No match
 /^b/
 
 /()^b/
-    *** Failers
-No match
+\= Expect no match
     a\nb\nc\n
 No match
     a\nb\nc\n
@@ -5736,8 +5518,7 @@ No match
  0: a
 
 /(?(?=a)b|a)/
-    *** Failers
-No match
+\= Expect no match
     a
 No match
     a
@@ -5774,8 +5555,7 @@ No match
  0: abcd
     xy:z:::abcd
  0: xy:z:::abcd
-    *** Failers
- 0: Failers
+\= Expect no match
     abcd:
 No match
     abcd:
@@ -5821,8 +5601,7 @@ No match
  5: abc
 
 /a\Z/
-    *** Failers
-No match
+\= Expect no match
     aaab
 No match
     a\nb\n
@@ -5841,26 +5620,25 @@ No match
 /b\z/
     a\nb
  0: b
-    *** Failers
-No match
     
 /(?>.*)(?<=(abcd|wxyz))/
     alphabetabcd
  0: alphabetabcd
     endingwxyz
  0: endingwxyz
-    *** Failers
-No match
+\= Expect no match
     a rather long string that doesn't end with one of them
 No match
 
 /word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/
     word cat dog elephant mussel cow horse canary baboon snake shark otherword
  0: word cat dog elephant mussel cow horse canary baboon snake shark otherword
+\= Expect no match
     word cat dog elephant mussel cow horse canary baboon snake shark
 No match
   
 /word (?>[a-zA-Z0-9]+ ){0,30}otherword/
+\= Expect no match
     word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
 No match
 
@@ -5869,8 +5647,7 @@ No match
  0: foo
     123999foo 
  0: foo
-    *** Failers
-No match
+\= Expect no match
     123abcfoo
 No match
     
@@ -5879,8 +5656,7 @@ No match
  0: foo
     123999foo 
  0: foo
-    *** Failers
-No match
+\= Expect no match
     123abcfoo
 No match
 
@@ -5889,8 +5665,7 @@ No match
  0: foo
     123456foo 
  0: foo
-    *** Failers
-No match
+\= Expect no match
     123999foo  
 No match
     
@@ -5899,8 +5674,7 @@ No match
  0: foo
     123456foo 
  0: foo
-    *** Failers
-No match
+\= Expect no match
     123999foo  
 No match
 
@@ -5948,8 +5722,7 @@ No match
  0: -
     0digit
  0: 0
-    *** Failers
-No match
+\= Expect no match
     bcdef    
 No match
     
@@ -5978,7 +5751,8 @@ No match
  0: x
 
 /(?!^)x/m
-  a\nxb\n
+\= Expect no match
+    a\nxb\n
 No match
 
 /abc\Qabc\Eabc/
@@ -5992,8 +5766,7 @@ No match
 /   abc\Q abc\Eabc/x
     abc abcabc
  0: abc abcabc
-    *** Failers
-No match
+\= Expect no match
     abcabcabc  
 No match
     
@@ -6033,8 +5806,7 @@ No match
 /\Gabc/
     abc
  0: abc
-    *** Failers
-No match
+\= Expect no match
     xyzabc  
 No match
 
@@ -6052,8 +5824,7 @@ No match
 /a(?x: b c )d/
     XabcdY
  0: abcd
-    *** Failers 
-No match
+\= Expect no match 
     Xa b c d Y 
 No match
 
@@ -6066,8 +5837,7 @@ No match
 /(?i)AB(?-i)C/
     XabCY
  0: abC
-    *** Failers
-No match
+\= Expect no match
     XabcY  
 No match
 
@@ -6076,8 +5846,7 @@ No match
  0: abCE
     DE
  0: DE
-    *** Failers
-No match
+\= Expect no match
     abcE
 No match
     abCe  
@@ -6098,12 +5867,12 @@ No match
  0: d
     ] 
  0: ]
-    *** Failers
- 0: a
+\= Expect no match
     b     
 No match
 
 /(a+)*b/
+\= Expect no match
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 
 No match
     
@@ -6150,22 +5919,21 @@ Failed: error -40: backreference condition or recursion test is not supported fo
 /line\nbreak/firstline
     this is a line\nbreak
  0: line\x0abreak
-    ** Failers 
-No match
+\= Expect no match 
     line one\nthis is a line\nbreak in the second line 
 No match
 
 /line\nbreak/m,firstline
     this is a line\nbreak
  0: line\x0abreak
-    ** Failers 
-No match
+\= Expect no match 
     line one\nthis is a line\nbreak in the second line 
 No match
 
 /1234/
     123\=ps
 Partial match: 123
+\= Expect no match 
     a4\=ps,dfa_restart
 No match
 
@@ -6238,8 +6006,7 @@ Subject length lower bound = 3
  0: abc
     xyz\r\nabc
  0: abc
-    ** Failers
-No match
+\= Expect no match
     xyz\rabc
 No match
     xyzabc\r
@@ -6260,8 +6027,7 @@ Last code unit = 'c'
 Subject length lower bound = 3
     xyz\r\nabclf>
  0: abc
-    ** Failers
-No match
+\= Expect no match
     xyz\nabclf
 No match
     xyz\rabclf
@@ -6276,8 +6042,7 @@ Last code unit = 'c'
 Subject length lower bound = 3
     xyz\rabc
  0: abc
-    ** Failers
-No match
+\= Expect no match
     xyz\nabc
 No match
     xyz\r\nabc
@@ -6387,50 +6152,49 @@ Subject length lower bound = 5
  3: a
 
 /(a|)*\d/
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-No match
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
-
-/(?>a|)*\d/
+\= Expect no match
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 No match
+
+/(?>a|)*\d/
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
-
-/(?:a|)*\d/
+\= Expect no match
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 No match
+
+/(?:a|)*\d/
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+\= Expect no match
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+No match
 
 /^a.b/newline=lf
     a\rb
  0: a\x0db
-    ** Failers
-No match
+\= Expect no match
     a\nb
 No match
 
 /^a.b/newline=cr
     a\nb
  0: a\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\rb
 No match
 
 /^a.b/newline=anycrlf
     a\x85b
  0: a\x85b
-    ** Failers
-No match
+\= Expect no match
     a\rb
 No match
 
 /^a.b/newline=any
-    ** Failers
-No match
+\= Expect no match
     a\nb
 No match
     a\rb
@@ -6471,8 +6235,7 @@ No match
  0: a\x0cb
     a\x85b   
  0: a\x85b
-    ** Failers
-No match
+\= Expect no match
     a\n\rb    
 No match
 
@@ -6513,8 +6276,7 @@ No match
  0: a\x0a\x0db
     a\n\r\x85\x0cb 
  0: a\x0a\x0d\x85\x0cb
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
     
@@ -6533,8 +6295,7 @@ No match
  0: a\x0a\x0d\x0a\x0db
     a\n\n\r\nb 
  0: a\x0a\x0a\x0d\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\n\n\n\rb
 No match
     a\r
@@ -6543,8 +6304,7 @@ No match
 /.+foo/
     afoo
  0: afoo
-    ** Failers 
-No match
+\= Expect no match 
     \r\nfoo 
 No match
     \nfoo 
@@ -6555,16 +6315,14 @@ No match
  0: afoo
     \nfoo 
  0: \x0afoo
-    ** Failers 
-No match
+\= Expect no match 
     \r\nfoo 
 No match
 
 /.+foo/newline=any
     afoo
  0: afoo
-    ** Failers 
-No match
+\= Expect no match 
     \nfoo 
 No match
     \r\nfoo 
@@ -6583,16 +6341,14 @@ No match
  0: 
     abc\n\rxyz  
  0: 
-    ** Failers 
-No match
+\= Expect no match 
     abc\r\nxyz
 No match
 
 /^X/m
     XABC
  0: X
-    ** Failers 
-No match
+\= Expect no match 
     XABC\=notbol
 No match
 
@@ -6639,8 +6395,7 @@ No match
  0: abcabc
     xyzabc 
  0: xyzabc
-    ** Failers 
-No match
+\= Expect no match 
     xyzxyz 
 No match
  
@@ -6649,8 +6404,7 @@ No match
  0: X X\x0a
     X\x09X\x0b
  0: X\x09X\x0b
-    ** Failers
-No match
+\= Expect no match
     \xa0 X\x0a   
 No match
     
@@ -6661,8 +6415,7 @@ No match
  0: \x09 \xa0\x0a\x0b\x0c\x0d
     \x09\x20\xa0\x0a\x0b\x0c
  0: \x09 \xa0\x0a\x0b\x0c
-    ** Failers 
-No match
+\= Expect no match 
     \x09\x20\xa0\x0a\x0b
 No match
      
@@ -6682,8 +6435,7 @@ No match
  0: XNNNYZ
     >  X NYQZ
  0:   X NYQZ
-    ** Failers
-No match
+\= Expect no match
     >XYZ   
 No match
     >  X NY Z
@@ -6696,6 +6448,7 @@ No match
  0: \x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c
 
 /.+A/newline=crlf
+\= Expect no match
     \r\nA
 No match
     
@@ -6723,8 +6476,7 @@ Subject length lower bound = 3
  0: a\x0ab
     a\r\nb
  0: a\x0d\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\x85b
 No match
     a\x0bb     
@@ -6759,8 +6511,7 @@ Subject length lower bound = 2
  0: a\x0ab
     a\r\nb
  0: a\x0d\x0ab
-    ** Failers
-No match
+\= Expect no match
     a\x85b
 No match
     a\x0bb     
@@ -6795,12 +6546,11 @@ Subject length lower bound = 4
  0: a\x0a\x0d\x0db
     a\r\n\r\n\r\n\r\nb
  0: a\x0d\x0a\x0d\x0a\x0d\x0a\x0d\x0ab
-    ** Failers
+\= Expect no match
+    a\x0b\x0bb     
 No match
     a\x85\x85b
 No match
-    a\x0b\0bb     
-No match
 
 /a\R{2,4}b/I,bsr=unicode
 Capturing subpattern count = 0
@@ -6816,10 +6566,9 @@ Subject length lower bound = 4
  0: a\x0d\x0a\x0a\x0d\x0db
     a\x85\x85b
  0: a\x85\x85b
-    a\x0b\0bb     
-No match
-    ** Failers 
-No match
+    a\x0b\x0bb     
+ 0: a\x0b\x0bb
+\= Expect no match 
     a\r\r\r\r\rb 
 No match
     
@@ -6828,20 +6577,17 @@ No match
  0: abc
 
 /a[]b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
-No match
+\= Expect no match
     ab
 No match
 
 /a[]+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
-No match
+\= Expect no match
     ab 
 No match
 
 /a[]*+b/alt_bsux,allow_empty_class,match_unset_backref,dupnames
-    ** Failers
-No match
+\= Expect no match
     ab 
 No match
 
@@ -6850,8 +6596,7 @@ No match
  0: aXb
     a\nb 
  0: a\x0ab
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
     
@@ -6860,16 +6605,14 @@ No match
  0: aXb
     a\nX\nXb 
  0: a\x0aX\x0aXb
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
 
 /X$/dollar_endonly
     X
  0: X
-    ** Failers 
-No match
+\= Expect no match 
     X\n 
 No match
 
@@ -6894,8 +6637,7 @@ No match
  +2    ^ ^     z
  +3    ^  ^    
  0: xyz
-  ** Failers 
-No match
+\= Expect no match 
   abc
 No match
   abcxypqr  
@@ -6912,20 +6654,7 @@ No match
  +2    ^ ^     z
  +3    ^  ^    
  0: xyz
-  ** Failers 
---->** Failers
- +0 ^              x
- +0  ^             x
- +0   ^            x
- +0    ^           x
- +0     ^          x
- +0      ^         x
- +0       ^        x
- +0        ^       x
- +0         ^      x
- +0          ^     x
- +0           ^    x
-No match
+\= Expect no match 
   abc
 --->abc
  +0 ^       x
@@ -7018,12 +6747,14 @@ Partial match: 123999
  0: 999Y
 
 /Z(*F)/
+\= Expect no match 
     Z\=ps
 No match
     ZA\=ps
 No match
     
 /Z(?!)/
+\= Expect no match 
     Z\=ps
 No match
     ZA\=ps
@@ -7056,6 +6787,7 @@ Partial match: dogs
 /Z(*F)Q|ZXY/
     Z\=ps
 Partial match: Z
+\= Expect no match 
     ZA\=ps
 No match
     X\=ps
@@ -7124,8 +6856,7 @@ Subject length lower bound = 3
  0: abc
     the quick xyz brown fox 
  0: xyz
-    ** Failers
-No match
+\= Expect no match
     thejk;adlfj aenjl;fda asdfasd ehj;kjxyasiupd
 No match
 
@@ -7137,8 +6868,7 @@ Subject length lower bound = 0
  0: abc
     the quick xyz brown fox
  0: xyz
-    ** Failers
-No match
+\= Expect no match
     thejk;adlfj aenjl;fda asdfasd ehj;kjxyasiupd
 No match
 
@@ -7184,8 +6914,7 @@ Partial match: abcde
  0: BC
     CCD
  0: CC
-    ** Failers
-No match
+\= Expect no match
     CAD   
 No match
 
@@ -7194,8 +6923,7 @@ No match
  0: CC
     BCD 
  0: BC
-    ** Failers
-No match
+\= Expect no match
     ABCD
 No match
     CAD
@@ -7208,8 +6936,6 @@ No match
 Failed: error -42: pattern contains an item that is not supported for DFA matching
     
 /^(?=a(*SKIP)b|ac)/
-    ** Failers
-No match
     ac
 Failed: error -42: pattern contains an item that is not supported for DFA matching
     
@@ -7220,10 +6946,6 @@ Failed: error -42: pattern contains an item that is not supported for DFA matchi
 /^(?=a(*PRUNE)b)/
     ab  
 Failed: error -42: pattern contains an item that is not supported for DFA matching
-    ** Failers 
-No match
-    ac
-Failed: error -42: pattern contains an item that is not supported for DFA matching
 
 /^(?(?!a(*SKIP)b))/
     ac
@@ -7281,12 +7003,13 @@ Partial match: abc
 Partial match: abc
 
 /abc\B/
-    abc
-No match
     abc\=ps
 Partial match: abc
     abc\=ph
 Partial match: abc
+\= Expect no match 
+    abc
+No match
 
 /.+/
     abc\=offset=0
@@ -7295,18 +7018,19 @@ Partial match: abc
  0: bc
     abc\=offset=2
  0: c
-    abc\=offset=3
-No match
+\= Bad offsets
     abc\=offset=4
 Failed: error -33: bad offset value
     abc\=offset=-4 
 ** Invalid value in 'offset=-4'
+\= Expect no match 
+    abc\=offset=3
+No match
 
 /^(?:a)++\w/
      aaaab
  0: aaaab
-     ** Failers 
-No match
+\= Expect no match 
      aaaa 
 No match
      bbb 
@@ -7318,8 +7042,7 @@ No match
  1: aa
      aaaa 
  0: aa
-     ** Failers 
-No match
+\= Expect no match 
      bbb 
 No match
 
@@ -7328,16 +7051,14 @@ No match
  0: aaaab
      bbb 
  0: b
-     ** Failers 
-No match
+\= Expect no match 
      aaaa 
 No match
 
 /^(a)++\w/
      aaaab
  0: aaaab
-     ** Failers 
-No match
+\= Expect no match 
      aaaa 
 No match
      bbb 
@@ -7346,8 +7067,7 @@ No match
 /^(a|)++\w/
      aaaab
  0: aaaab
-     ** Failers 
-No match
+\= Expect no match 
      aaaa 
 No match
      bbb 
@@ -7357,8 +7077,7 @@ No match
     abcabcabc
  0: abc
  0+ abcabc
-    ** Failers
-No match
+\= Expect no match
     xyz  
 No match
     
@@ -7366,8 +7085,7 @@ No match
     abcabcabc
  0: abc
  0+ abcabc
-    ** Failers
-No match
+\= Expect no match
     xyz  
 No match
     
@@ -7375,8 +7093,7 @@ No match
     abcabcabc
  0: abc
  0+ abcabc
-    ** Failers
-No match
+\= Expect no match
     xyz  
 No match
     
@@ -7385,8 +7102,7 @@ No match
  0: xyz
 
 /(?=abc){1}xyz/
-    ** Failers
-No match
+\= Expect no match
     xyz 
 No match
     
@@ -7458,14 +7174,6 @@ Matched, but offsets vector is too small to show all matches
  2: aa
  3: a
 
-/ab\Cde/
-    abXde
- 0: abXde
-    
-/(?<=ab\Cde)X/
-    abZdeX
- 0: X
-
 /^\R/
     \r\=ps
  0: \x0d
@@ -7922,6 +7630,7 @@ Callout (5): 'x\x00z'
 /(?(?!)a|b)/
     bbb
  0: b
+\= Expect no match
     aaa 
 No match
 
@@ -7938,4 +7647,30 @@ No match
  0: 
  0: 
 
+/abc/use_offset_limit
+    1234abcde\=offset_limit=100
+ 0: abc
+    1234abcde\=offset_limit=9
+ 0: abc
+    1234abcde\=offset_limit=4
+ 0: abc
+    1234abcde\=offset_limit=4,offset=4
+ 0: abc
+\= Expect no match
+    1234abcde\=offset_limit=4,offset=5
+No match
+    1234abcde\=offset_limit=3
+No match
+
+/(?<=abc)/use_offset_limit
+    1234abc\=offset_limit=7
+ 0: 
+\= Expect no match
+    1234abc\=offset_limit=6
+No match
+
+/abcd/null_context
+    abcd\=null_context
+ 0: abcd
+
 # End of testinput6
diff --git a/testdata/testoutput7 b/testdata/testoutput7
index a7f6a62..f804185 100644
--- a/testdata/testoutput7
+++ b/testdata/testoutput7
@@ -3,6 +3,7 @@
 # used to force DFA matching for all tests.
 
 #subject dfa
+#newline_default LF any anyCRLF
 
 /\x{100}ab/utf
   \x{100}ab
@@ -21,8 +22,7 @@
  0: a\x{100}b
     a\x{100}\x{100}b  
  0: a\x{100}\x{100}b
-    *** Failers 
-No match
+\= Expect no match 
     ab
 No match
      
@@ -33,16 +33,14 @@ No match
  0: X
     \x{300}Xoanon 
  0: X
-    *** Failers 
-No match
+\= Expect no match 
     YXoanon  
 No match
     
 /\BX/utf
     YXoanon
  0: X
-    *** Failers
-No match
+\= Expect no match
     Xoanon
 No match
     +Xoanon    
@@ -57,16 +55,14 @@ No match
  0: X
     FAX 
  0: X
-    *** Failers 
-No match
+\= Expect no match 
     Xoanon  
 No match
     
 /X\B/utf
     Xoanon  
  0: X
-    *** Failers
-No match
+\= Expect no match
     X+oanon
 No match
     ZX\x{300}oanon 
@@ -87,8 +83,7 @@ No match
  0: \x{123}\x{123}4
     \x{400}\x{401}\x{402}6  
  0: \x{400}\x{401}\x{402}6
-    *** Failers
-No match
+\= Expect no match
     d99
 No match
     \x{123}\x{122}4   
@@ -105,8 +100,7 @@ No match
  0: a\x{7f}b
     a\x{100}b 
  0: a\x{100}b
-    *** Failers
-No match
+\= Expect no match
     a\nb  
 No match
 
@@ -117,8 +111,7 @@ No match
  0: a\x{4000}\x{7f}yb
     a\x{4000}\x{100}yb 
  0: a\x{4000}\x{100}yb
-    *** Failers
-No match
+\= Expect no match
     a\x{4000}b 
 No match
     ac\ncb 
@@ -181,8 +174,7 @@ No match
  0: a\x{1234}\x{4321}yb
     a\x{1234}\x{4321}\x{3412}b 
  0: a\x{1234}\x{4321}\x{3412}b
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b 
 No match
     ac\ncb 
@@ -200,8 +192,7 @@ No match
  1: axxxxb
     a\x{1234}\x{4321}\x{3412}\x{3421}b 
  0: a\x{1234}\x{4321}\x{3412}\x{3421}b
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b 
 No match
 
@@ -217,8 +208,7 @@ No match
  1: axxxxb
     a\x{1234}\x{4321}\x{3412}\x{3421}b 
  0: a\x{1234}\x{4321}\x{3412}\x{3421}b
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b 
 No match
 
@@ -237,8 +227,7 @@ No match
  0: axbxxb
     axxxxxbcdefghijb 
  0: axxxxxb
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b 
 No match
     axxxxxxbcdefghijb 
@@ -259,16 +248,14 @@ No match
  0: axbxxb
     axxxxxbcdefghijb 
  0: axxxxxb
-    *** Failers
-No match
+\= Expect no match
     a\x{1234}b 
 No match
     axxxxxxbcdefghijb 
 No match
 
 /^[a\x{c0}]/utf
-    *** Failers
-No match
+\= Expect no match
     \x{100}
 No match
 
@@ -287,8 +274,7 @@ No match
 /(?:\x{100}){3}b/utf
     \x{100}\x{100}\x{100}b
  0: \x{100}\x{100}\x{100}b
-    *** Failers 
-No match
+\= Expect no match 
     \x{100}\x{100}b
 No match
 
@@ -297,8 +283,7 @@ No match
  0: \x{ab}
     \xc2\xab
  0: \x{ab}
-    *** Failers 
-No match
+\= Expect no match 
     \x00{ab}
 No match
 
@@ -307,8 +292,7 @@ No match
  0: X
     \x{256}XYZ 
  0: X
-    *** Failers
-No match
+\= Expect no match
     XYZ 
 No match
 
@@ -467,8 +451,7 @@ Matched, but offsets vector is too small to show all matches
 /\D+/utf
     12abcd34
  0: abcd
-    *** Failers
- 0: *** Failers
+\= Expect no match
     1234  
 No match
 
@@ -477,8 +460,7 @@ No match
  0: abc
     12ab34
  0: ab
-    *** Failers  
- 0: ***
+\= Expect no match  
     1234
 No match
     12a34  
@@ -490,9 +472,7 @@ No match
  1: ab
     12ab34
  0: ab
-    *** Failers  
- 0: ***
- 1: **
+\= Expect no match  
     1234
 No match
     12a34  
@@ -501,16 +481,13 @@ No match
 /\d+/utf
     12abcd34
  0: 12
-    *** Failers
-No match
 
 /\d{2,3}/utf
     12abcd34
  0: 12
     1234abcd
  0: 123
-    *** Failers  
-No match
+\= Expect no match  
     1.4 
 No match
 
@@ -520,16 +497,14 @@ No match
     1234abcd
  0: 123
  1: 12
-    *** Failers  
-No match
+\= Expect no match  
     1.4 
 No match
 
 /\S+/utf
     12abcd34
  0: 12abcd34
-    *** Failers
- 0: ***
+\= Expect no match
     \    \ 
 No match
 
@@ -538,8 +513,7 @@ No match
  0: 12a
     1234abcd
  0: 123
-    *** Failers
- 0: ***
+\= Expect no match
     \     \  
 No match
 
@@ -550,25 +524,20 @@ No match
     1234abcd
  0: 123
  1: 12
-    *** Failers
- 0: ***
- 1: **
+\= Expect no match
     \     \  
 No match
 
 />\s+</utf
     12>      <34
  0: >      <
-    *** Failers
-No match
 
 />\s{2,3}</utf
     ab>  <cd
  0: >  <
     ab>   <ce
  0: >   <
-    *** Failers
-No match
+\= Expect no match
     ab>    <cd 
 No match
 
@@ -577,16 +546,14 @@ No match
  0: >  <
     ab>   <ce
  0: >   <
-    *** Failers
-No match
+\= Expect no match
     ab>    <cd 
 No match
 
 /\w+/utf
     12      34
  0: 12
-    *** Failers
- 0: Failers
+\= Expect no match
     +++=*! 
 No match
 
@@ -595,8 +562,7 @@ No match
  0: ab
     abcd ce
  0: abc
-    *** Failers
- 0: Fai
+\= Expect no match
     a.b.c
 No match
 
@@ -606,17 +572,14 @@ No match
     abcd ce
  0: abc
  1: ab
-    *** Failers
- 0: Fai
- 1: Fa
+\= Expect no match
     a.b.c
 No match
 
 /\W+/utf
     12====34
  0: ====
-    *** Failers
- 0: *** 
+\= Expect no match
     abcd 
 No match
 
@@ -625,8 +588,7 @@ No match
  0: ===
     ab==cd
  0: ==
-    *** Failers
- 0: ***
+\= Expect no match
     a.b.c
 No match
 
@@ -636,9 +598,7 @@ No match
  1: ==
     ab==cd
  0: ==
-    *** Failers
- 0: ***
- 1: **
+\= Expect no match
     a.b.c
 No match
 
@@ -649,8 +609,6 @@ No match
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers 
-No match
 
 /[Z\x{100}]/utf
     Z\x{100}
@@ -659,16 +617,12 @@ No match
  0: \x{100}
     \x{100}Z
  0: \x{100}
-    *** Failers 
-No match
 
 /[\x{100}\x{200}]/utf
    ab\x{100}cd
  0: \x{100}
    ab\x{200}cd
  0: \x{200}
-   *** Failers  
-No match
 
 /[\x{100}-\x{200}]/utf
    ab\x{100}cd
@@ -677,8 +631,6 @@ No match
  0: \x{200}
    ab\x{111}cd 
  0: \x{111}
-   *** Failers  
-No match
 
 /[z-\x{200}]/utf
    ab\x{100}cd
@@ -691,8 +643,6 @@ No match
  0: z
    ab|cd  
  0: |
-   *** Failers  
-No match
 
 /[Q\x{100}\x{200}]/utf
    ab\x{100}cd
@@ -701,8 +651,6 @@ No match
  0: \x{200}
    Q? 
  0: Q
-   *** Failers  
-No match
 
 /[Q\x{100}-\x{200}]/utf
    ab\x{100}cd
@@ -713,8 +661,6 @@ No match
  0: \x{111}
    Q? 
  0: Q
-   *** Failers  
-No match
 
 /[Qz-\x{200}]/utf
    ab\x{100}cd
@@ -729,8 +675,6 @@ No match
  0: |
    Q? 
  0: Q
-   *** Failers  
-No match
 
 /[\x{100}\x{200}]{1,3}/utf
    ab\x{100}cd
@@ -739,8 +683,6 @@ No match
  0: \x{200}
    ab\x{200}\x{100}\x{200}\x{100}cd
  0: \x{200}\x{100}\x{200}
-   *** Failers  
-No match
 
 /[\x{100}\x{200}]{1,3}?/utf
    ab\x{100}cd
@@ -751,8 +693,6 @@ No match
  0: \x{200}\x{100}\x{200}
  1: \x{200}\x{100}
  2: \x{200}
-   *** Failers  
-No match
 
 /[Q\x{100}\x{200}]{1,3}/utf
    ab\x{100}cd
@@ -761,8 +701,6 @@ No match
  0: \x{200}
    ab\x{200}\x{100}\x{200}\x{100}cd
  0: \x{200}\x{100}\x{200}
-   *** Failers  
-No match
 
 /[Q\x{100}\x{200}]{1,3}?/utf
    ab\x{100}cd
@@ -773,16 +711,13 @@ No match
  0: \x{200}\x{100}\x{200}
  1: \x{200}\x{100}
  2: \x{200}
-   *** Failers  
-No match
 
 /(?<=[\x{100}\x{200}])X/utf
     abc\x{200}X
  0: X
     abc\x{100}X 
  0: X
-    *** Failers
-No match
+\= Expect no match
     X  
 No match
 
@@ -793,16 +728,14 @@ No match
  0: X
     abQX 
  0: X
-    *** Failers
-No match
+\= Expect no match
     X  
 No match
 
 /(?<=[\x{100}\x{200}]{3})X/utf
     abc\x{100}\x{200}\x{100}X
  0: X
-    *** Failers
-No match
+\= Expect no match
     abc\x{200}X
 No match
     X  
@@ -815,8 +748,7 @@ No match
  0: \x{150}X
     \x{500}X 
  0: \x{500}X
-    *** Failers
-No match
+\= Expect no match
     \x{100}X
 No match
     \x{200}X   
@@ -829,8 +761,7 @@ No match
  0: \x{150}X
     \x{500}X 
  0: \x{500}X
-    *** Failers
-No match
+\= Expect no match
     \x{100}X
 No match
     \x{200}X   
@@ -843,8 +774,7 @@ No match
  0: AX
     \x{500}X 
  0: \x{500}X
-    *** Failers
-No match
+\= Expect no match
     \x{100}X
 No match
     \x{150}X
@@ -859,8 +789,7 @@ No match
  0: Z
     \x{100}
  0: \x{100}
-    *** Failers
-No match
+\= Expect no match
     \x{102}
 No match
     y    
@@ -885,23 +814,28 @@ No match
  0: \x{123}
 
 /^[ac]*b/utf
-  xb
+\= Expect no match
+    xb
 No match
 
 /^[ac\x{100}]*b/utf
-  xb
+\= Expect no match
+    xb
 No match
 
 /^[^x]*b/i,utf
-  xb
+\= Expect no match
+    xb
 No match
 
 /^[^x]*b/utf
-  xb
+\= Expect no match
+    xb
 No match
   
 /^\d*b/utf
-  xb 
+\= Expect no match
+    xb 
 No match
 
 /(|a)/g,utf
@@ -967,8 +901,7 @@ No match
  0: a\x{2028}b
     a\x{2029}b 
  0: a\x{2029}b
-    ** Failers
-No match
+\= Expect no match
     a\n\rb    
 No match
 
@@ -1009,8 +942,7 @@ No match
  0: a\x{0a}\x{0d}b
     a\n\r\x{85}\x0cb 
  0: a\x{0a}\x{0d}\x{85}\x{0c}b
-    ** Failers
-No match
+\= Expect no match
     ab  
 No match
 
@@ -1029,8 +961,7 @@ No match
  0: a\x{0a}\x{0d}\x{0a}\x{0d}b
     a\n\n\r\nb 
  0: a\x{0a}\x{0a}\x{0d}\x{0a}b
-    ** Failers
-No match
+\= Expect no match
     a\n\n\n\rb
 No match
     a\r
@@ -1059,8 +990,7 @@ No match
  0: X X\x{0a}
     X\x09X\x0b
  0: X\x{09}X\x{0b}
-    ** Failers
-No match
+\= Expect no match
     \x{a0} X\x0a   
 No match
     
@@ -1073,8 +1003,7 @@ No match
  1: \x{09} \x{a0}\x{0a}\x{0b}\x{0c}
     \x09\x20\x{a0}\x0a\x0b\x0c
  0: \x{09} \x{a0}\x{0a}\x{0b}\x{0c}
-    ** Failers 
-No match
+\= Expect no match 
     \x09\x20\x{a0}\x0a\x0b
 No match
      
@@ -1083,8 +1012,7 @@ No match
  0: \x{3001}\x{3000}\x{2030}\x{2028}
     X\x{180e}X\x{85}
  0: X\x{180e}X\x{85}
-    ** Failers
-No match
+\= Expect no match
     \x{2009} X\x0a   
 No match
     
@@ -1097,8 +1025,7 @@ No match
  1: \x{09}\x{205f}\x{a0}\x{0a}\x{2029}\x{0c}
     \x09\x20\x{202f}\x0a\x0b\x0c
  0: \x{09} \x{202f}\x{0a}\x{0b}\x{0c}
-    ** Failers 
-No match
+\= Expect no match 
     \x09\x{200a}\x{a0}\x{2028}\x0b
 No match
      
@@ -1115,8 +1042,7 @@ Subject length lower bound = 3
  0: a\x{0a}b
     a\r\nb
  0: a\x{0d}\x{0a}b
-    ** Failers
-No match
+\= Expect no match
     a\x{85}b
 No match
     a\x0bb     
@@ -1153,8 +1079,7 @@ Subject length lower bound = 2
  0: a\x{0a}b
     a\r\nb
  0: a\x{0d}\x{0a}b
-    ** Failers
-No match
+\= Expect no match
     a\x{85}b
 No match
     a\x0bb     
@@ -1216,13 +1141,6 @@ Partial match: abcde
     the cat\=ph
 Partial match: the cat
 
-/ab\Cde/utf
-    abXde
-Failed: error -42: pattern contains an item that is not supported for DFA matching
-
-/(?<=ab\Cde)X/utf
-Failed: error 136 at offset 10: \C is not allowed in a lookbehind assertion
-
 /./newline=crlf,utf
     \r\=ps
  0: \x{0d}
@@ -1269,8 +1187,7 @@ Partial match: \x{0d}\x{0d}\x{0d}
 /\pL\P{Nd}/utf
     AB
  0: AB
-    *** Failers
- 0: Fa
+\= Expect no match
     A0
 No match
     00
@@ -1283,8 +1200,7 @@ No match
  0: A\x{300}B
     A\x{300}\x{301}\x{302}BC
  0: A\x{300}\x{301}\x{302}B
-    *** Failers
- 0: **
+\= Expect no match
     \x{300}
 No match
 
@@ -1295,8 +1211,7 @@ No match
  0: A\x{300}B\x{300}\x{301}
     A\x{300}\x{301}\x{302}BC
  0: A\x{300}\x{301}\x{302}B
-    *** Failers
- 0: **
+\= Expect no match
     \x{300}
 No match
 
@@ -1305,16 +1220,13 @@ No match
  0: abcd
     a
  0: a
-    *** Failers
-No match
 
 /^\PL+/utf
     1234
  0: 1234
     =
  0: =
-    *** Failers
- 0: *** 
+\= Expect no match
     abcd
 No match
 
@@ -1327,8 +1239,6 @@ No match
  0: A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}
     a
  0: a
-    *** Failers
- 0: *** Failers
     \x{300}\x{301}\x{302}
  0: \x{300}\x{301}\x{302}
 
@@ -1341,20 +1251,17 @@ No match
  0: A\x{300}abc
     \x{300}abc
  0: \x{300}abc
-    *** Failers
-No match
 
 /^\X?abc/utf
     abc
  0: abc
     A\x{300}abc
  0: A\x{300}abc
-    *** Failers
-No match
-    A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abcxyz
-No match
     \x{300}abc
  0: \x{300}abc
+\= Expect no match
+    A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abcxyz
+No match
 
 /\X*abc/utf
     abc
@@ -1365,8 +1272,6 @@ No match
  0: A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abc
     \x{300}abc
  0: \x{300}abc
-    *** Failers
-No match
 
 /^\X*abc/utf
     abc
@@ -1375,8 +1280,6 @@ No match
  0: A\x{300}abc
     A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abcxyz
  0: A\x{300}\x{301}\x{302}A\x{300}A\x{300}A\x{300}abc
-    *** Failers
-No match
     \x{300}abc
  0: \x{300}abc
 
@@ -1385,8 +1288,7 @@ No match
  0: A=b
     =c
  0: =c
-    *** Failers
-No match
+\= Expect no match
     1=2
 No match
     AAAA=b
@@ -1397,8 +1299,7 @@ No match
  0: AAAA=b
     =c
  0: =c
-    *** Failers
-No match
+\= Expect no match
     1=2
 No match
 
@@ -1407,8 +1308,7 @@ No match
  0: A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}X
     A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}X
  0: A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}A\x{300}\x{301}\x{302}X
-    *** Failers
-No match
+\= Expect no match
     X
 No match
     A\x{300}\x{301}\x{302}X
@@ -1421,64 +1321,56 @@ No match
  0: \x{7f}\x{c0}\x{30f}\x{660}\x{66c}\x{f01}\x{1680}<
     \np\x{300}9!\$ <
  0: \x{0a}p\x{300}9!$ <
-    ** Failers
-No match
+\= Expect no match
     ap\x{300}9!\$ <
 No match
   
 /^\PC/utf
     X
  0: X
-    ** Failers
- 0: *
+\= Expect no match
     \x7f
 No match
   
 /^\PL/utf
     9
  0: 9
-    ** Failers
- 0: *
+\= Expect no match
     \x{c0}
 No match
   
 /^\PM/utf
     X
  0: X
-    ** Failers
- 0: *
+\= Expect no match
     \x{30f}
 No match
   
 /^\PN/utf
     X
  0: X
-    ** Failers
- 0: *
+\= Expect no match
     \x{660}
 No match
   
 /^\PP/utf
     X
  0: X
-    ** Failers
-No match
+\= Expect no match
     \x{66c}
 No match
   
 /^\PS/utf
     X
  0: X
-    ** Failers
- 0: *
+\= Expect no match
     \x{f01}
 No match
   
 /^\PZ/utf
     X
  0: X
-    ** Failers
- 0: *
+\= Expect no match
     \x{1680}
 No match
     
@@ -1487,8 +1379,7 @@ No match
  0: \x{17}
     \x{09f}
  0: \x{9f}
-    ** Failers
-No match
+\= Expect no match
     \x{0600}
 No match
   
@@ -1507,38 +1398,33 @@ No match
  0: \x{2068}
     \x{2069}
  0: \x{2069}
-    ** Failers
-No match
+\= Expect no match
     \x{09f}
 No match
   
 /^\p{Cn}/utf
-    ** Failers
-No match
+\= Expect no match
     \x{09f}
 No match
   
 /^\p{Co}/utf
     \x{f8ff}
  0: \x{f8ff}
-    ** Failers
-No match
+\= Expect no match
     \x{09f}
 No match
   
 /^\p{Cs}/utf
     \x{dfff}\=no_utf_check
  0: \x{dfff}
-    ** Failers
-No match
+\= Expect no match
     \x{09f}
 No match
   
 /^\p{Ll}/utf
     a
  0: a
-    ** Failers
-No match
+\= Expect no match
     Z
 No match
     \x{e000}
@@ -1547,16 +1433,14 @@ No match
 /^\p{Lm}/utf
     \x{2b0}
  0: \x{2b0}
-    ** Failers
-No match
+\= Expect no match
     a
 No match
   
 /^\p{Lo}/utf
     \x{1bb}
  0: \x{1bb}
-    ** Failers
-No match
+\= Expect no match
     a
 No match
     \x{2b0}
@@ -1565,8 +1449,7 @@ No match
 /^\p{Lt}/utf
     \x{1c5}
  0: \x{1c5}
-    ** Failers
-No match
+\= Expect no match
     a
 No match
     \x{2b0}
@@ -1575,16 +1458,14 @@ No match
 /^\p{Lu}/utf
     A
  0: A
-    ** Failers
-No match
+\= Expect no match
     \x{2b0}
 No match
   
 /^\p{Mc}/utf
     \x{903}
  0: \x{903}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{300}
@@ -1593,8 +1474,7 @@ No match
 /^\p{Me}/utf
     \x{488}
  0: \x{488}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{903}
@@ -1607,8 +1487,7 @@ No match
  0: \x{300}
     \x{1a1b}
  0: \x{1a1b}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{903}
@@ -1654,16 +1533,14 @@ Matched, but offsets vector is too small to show all matches
  7: \x{966}\x{967}\x{968}
  8: \x{966}\x{967}
  9: \x{966}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
   
 /^\p{Nl}/utf
     \x{16ee}
  0: \x{16ee}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{966}
@@ -1674,8 +1551,7 @@ No match
  0: \x{b2}
     \x{b3}
  0: \x{b3}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{16ee}
@@ -1686,8 +1562,7 @@ No match
  0: _
     \x{203f}
  0: \x{203f}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     -
@@ -1700,8 +1575,7 @@ No match
  0: -
     \x{58a}
  0: \x{58a}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1720,8 +1594,7 @@ No match
  0: \x{2309}
     \x{230b}
  0: \x{230b}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1740,8 +1613,7 @@ No match
  0: \x{bb}
     \x{2019}
  0: \x{2019}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1752,8 +1624,7 @@ No match
  0: \x{ab}
     \x{2018}
  0: \x{2018}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1764,8 +1635,7 @@ No match
  0: !
     \x{37e}
  0: \x{37e}
-    ** Failers
- 0: *
+\= Expect no match
     X
 No match
     \x{203f}
@@ -1784,8 +1654,7 @@ No match
  0: \x{2308}
     \x{230a}
  0: \x{230a}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     )
@@ -1802,8 +1671,7 @@ No match
  0: $\x{a2}\x{a3}\x{a4}\x{a5}
     \x{9f2}
  0: \x{9f2}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{2c2}
@@ -1812,8 +1680,7 @@ No match
 /^\p{Sk}/utf
     \x{2c2}
  0: \x{2c2}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{9f2}
@@ -1822,8 +1689,7 @@ No match
 /^\p{Sm}+/utf
     +<|~\x{ac}\x{2044}
  0: +<|~\x{ac}\x{2044}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{9f2}
@@ -1834,8 +1700,7 @@ No match
  0: \x{a6}
     \x{482}
  0: \x{482}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{9f2}
@@ -1844,8 +1709,7 @@ No match
 /^\p{Zl}/utf
     \x{2028}
  0: \x{2028}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{2029}
@@ -1854,8 +1718,7 @@ No match
 /^\p{Zp}/utf
     \x{2029}
  0: \x{2029}
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     \x{2028}
@@ -1872,8 +1735,7 @@ No match
  0: \x{2000}
     \x{2001}
  0: \x{2001}
-    ** Failers
-No match
+\= Expect no match
     \x{2028}
 No match
     \x{200d}
@@ -1948,8 +1810,7 @@ No match
  0: \x{660}\x{661}\x{662}ABC
   
 /\p{Nd}*+(....)/utf
-      ** Failers
- 0: ** F
+\= Expect no match
       \x{660}\x{661}\x{662}ABC
 No match
   
@@ -1958,8 +1819,7 @@ No match
  0: A
     a\x{10a0}B
  0: \x{10a0}
-    ** Failers
- 0: F
+\= Expect no match
     a
 No match
     \x{1d00}
@@ -1968,16 +1828,14 @@ No match
 /\p{^Lu}/i,utf
     1234
  0: 1
-    ** Failers
- 0: *
+\= Expect no match
     ABC
 No match
 
 /\P{Lu}/i,utf
     1234
  0: 1
-    ** Failers
- 0: *
+\= Expect no match
     ABC
 No match
 
@@ -1988,8 +1846,7 @@ No match
  0: XYZ
     ABA\x{660}XYZpqr
  0: XYZ
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     XYZ
@@ -2002,8 +1859,7 @@ No match
  0: XYZ
     XYZ
  0: XYZ
-    ** Failers
-No match
+\= Expect no match
     WXYZ
 No match
 
@@ -2018,22 +1874,18 @@ No match
  0: 12-34
     12+\x{661}-34
  0: 12+\x{661}-34
-    ** Failers
-No match
+\= Expect no match
     abcd
 No match
 
 /[\P{Nd}]+/utf
     abcd
  0: abcd
-    ** Failers
- 0: ** Failers
+\= Expect no match
     1234
 No match
 
 /\D+/utf,no_auto_possess
-    11111111111111111111111111111111111111111111111111111111111111111111111
-No match
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 Matched, but offsets vector is too small to show all matches
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
@@ -2051,10 +1903,11 @@ Matched, but offsets vector is too small to show all matches
 12: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 13: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 14: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-     
-/\P{Nd}+/utf,no_auto_possess
+\= Expect no match
     11111111111111111111111111111111111111111111111111111111111111111111111
 No match
+     
+/\P{Nd}+/utf,no_auto_possess
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 Matched, but offsets vector is too small to show all matches
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
@@ -2072,10 +1925,11 @@ Matched, but offsets vector is too small to show all matches
 12: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 13: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 14: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-
-/[\D]+/utf,no_auto_possess
+\= Expect no match
     11111111111111111111111111111111111111111111111111111111111111111111111
 No match
+
+/[\D]+/utf,no_auto_possess
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 Matched, but offsets vector is too small to show all matches
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
@@ -2093,10 +1947,11 @@ Matched, but offsets vector is too small to show all matches
 12: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 13: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 14: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-
-/[\P{Nd}]+/utf,no_auto_possess
+\= Expect no match
     11111111111111111111111111111111111111111111111111111111111111111111111
 No match
+
+/[\P{Nd}]+/utf,no_auto_possess
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 Matched, but offsets vector is too small to show all matches
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
@@ -2114,10 +1969,11 @@ Matched, but offsets vector is too small to show all matches
 12: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 13: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 14: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-
-/[\D\P{Nd}]+/utf,no_auto_possess
+\= Expect no match
     11111111111111111111111111111111111111111111111111111111111111111111111
 No match
+
+/[\D\P{Nd}]+/utf,no_auto_possess
     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 Matched, but offsets vector is too small to show all matches
  0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
@@ -2135,6 +1991,9 @@ Matched, but offsets vector is too small to show all matches
 12: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 13: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 14: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+\= Expect no match
+    11111111111111111111111111111111111111111111111111111111111111111111111
+No match
 
 /\pL/utf
     a
@@ -2153,8 +2012,7 @@ Matched, but offsets vector is too small to show all matches
  0: A
     aZ
  0: Z
-    ** Failers
- 0: F
+\= Expect no match
     abc
 No match
 
@@ -2163,8 +2021,7 @@ No match
  0: A
     aZ
  0: Z
-    ** Failers
- 0: F
+\= Expect no match
     abc
 No match
 
@@ -2173,8 +2030,7 @@ No match
  0: a
     Az
  0: z
-    ** Failers
- 0: a
+\= Expect no match
     ABC
 No match
 
@@ -2183,8 +2039,7 @@ No match
  0: a
     Az
  0: z
-    ** Failers
- 0: a
+\= Expect no match
     ABC
 No match
 
@@ -2203,8 +2058,7 @@ No match
 /A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
  0: A\x{391}\x{10427}\x{ff3a}\x{1fb0}
-    ** Failers
-No match
+\= Expect no match
     a\x{391}\x{10427}\x{ff3a}\x{1fb0}
 No match
     A\x{3b1}\x{10427}\x{ff3a}\x{1fb0}
@@ -2269,8 +2123,7 @@ No match
  0: \x{105}
     \x{109}
  0: \x{109}
-    ** Failers
-No match
+\= Expect no match
     \x{100}
 No match
     \x{10a}
@@ -2295,8 +2148,7 @@ No match
  0: \x{100}
     \x{101}
  0: \x{101}
-    ** Failers
-No match
+\= Expect no match
     \x{102}
 No match
     Y
@@ -2313,8 +2165,6 @@ No match
  0: A\x{300}
     A\x{300}\x{301}\x{302}BC
  0: A\x{300}\x{301}\x{302}
-    *** Failers
- 0: *
     \x{300}
  0: \x{300}
 
@@ -2359,8 +2209,7 @@ No match
  4: A
 
 /^\X(.)/utf
-    *** Failers
- 0: **
+\= Expect no match
     A\x{300}\x{301}\x{302}
 No match
 
@@ -2393,8 +2242,7 @@ No match
  0: 12X
     123X
  0: 123X
-    *** Failers
-No match
+\= Expect no match
     X
 No match
     1X
@@ -2411,16 +2259,14 @@ No match
 /^\p{Han}+/utf
     \x{2e81}\x{3007}\x{2f804}\x{31a0}
  0: \x{2e81}\x{3007}\x{2f804}
-    ** Failers
-No match
+\= Expect no match
     \x{2e7f}
 No match
 
 /^\P{Katakana}+/utf
     \x{3105}
  0: \x{3105}
-    ** Failers
- 0: ** Failers
+\= Expect no match
     \x{30ff}
 No match
 
@@ -2429,16 +2275,14 @@ No match
  0: \x{6e9}
     \x{060b}
  0: \x{60b}
-    ** Failers
-No match
+\= Expect no match
     X\x{06e9}
 No match
 
 /^[\P{Yi}]/utf
     \x{2f800}
  0: \x{2f800}
-    ** Failers
- 0: *
+\= Expect no match
     \x{a014}
 No match
     \x{a4c6}
@@ -2449,14 +2293,12 @@ No match
  0: AX
     \x{1234}XYZ
  0: \x{1234}X
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     
 /^\P{Any}X/utf
-    ** Failers
-No match
+\= Expect no match
     AX
 No match
     
@@ -2467,16 +2309,14 @@ No match
  0: AX
     \x{1234}XYZ
  0: \x{1234}X
-    ** Failers
-No match
+\= Expect no match
     ABXYZ
 No match
 
 /^\P{Any}?X/utf
     XYZ
  0: X
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2491,14 +2331,12 @@ No match
  0: \x{1234}X
     A\x{1234}XYZ
  0: A\x{1234}X
-    ** Failers
-No match
+\= Expect no match
     XYZ
 No match
 
 /^\P{Any}+X/utf
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2517,14 +2355,11 @@ No match
  0: \x{1234}X
     A\x{1234}XYZ
  0: A\x{1234}X
-    ** Failers
-No match
 
 /^\P{Any}*X/utf
     XYZ
  0: X
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2537,14 +2372,12 @@ No match
  0: AX
     \x{1234}XYZ
  0: \x{1234}X
-    ** Failers
-No match
+\= Expect no match
     X
 No match
     
 /^[\P{Any}]X/utf
-    ** Failers
-No match
+\= Expect no match
     AX
 No match
     
@@ -2555,16 +2388,14 @@ No match
  0: AX
     \x{1234}XYZ
  0: \x{1234}X
-    ** Failers
-No match
+\= Expect no match
     ABXYZ
 No match
 
 /^[\P{Any}]?X/utf
     XYZ
  0: X
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2579,14 +2410,12 @@ No match
  0: \x{1234}X
     A\x{1234}XYZ
  0: A\x{1234}X
-    ** Failers
-No match
+\= Expect no match
     XYZ
 No match
 
 /^[\P{Any}]+X/utf
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2605,14 +2434,11 @@ No match
  0: \x{1234}X
     A\x{1234}XYZ
  0: A\x{1234}X
-    ** Failers
-No match
 
 /^[\P{Any}]*X/utf
     XYZ
  0: X
-    ** Failers
-No match
+\= Expect no match
     AXYZ
 No match
     \x{1234}XYZ
@@ -2637,8 +2463,7 @@ No match
  0: \x{1234}\x{0a}\x{0d}\x{3456}x
 
 /^\P{Any}{3,5}?/utf
-    ** Failers
-No match
+\= Expect no match
     abcdefgh
 No match
     \x{1234}\n\r\x{3456}xyz
@@ -2651,8 +2476,7 @@ No match
  0: aX
      \x{1c5}XY
  0: \x{1c5}X
-     ** Failers
-No match
+\= Expect no match
      \x{1bb}XY
 No match
      \x{2b0}XY
@@ -2667,8 +2491,7 @@ No match
  0: aX
      \x{1c5}XY
  0: \x{1c5}X
-     ** Failers
-No match
+\= Expect no match
      \x{1bb}XY
 No match
      \x{2b0}XY
@@ -2688,8 +2511,7 @@ No match
      abcDEXypqreXlmn
  0: abcDEXypqreX
  1: abcDEX
-     ** Failers
-No match
+\= Expect no match
      \x{1bb}XY
 No match
      \x{2b0}XY
@@ -2709,8 +2531,7 @@ No match
      abcDEXypqreXlmn
  0: abcDEXypqreX
  1: abcDEX
-     ** Failers
-No match
+\= Expect no match
      \x{1bb}XY
 No match
      \x{2b0}XY
@@ -2730,8 +2551,7 @@ No match
      abcDEXypqreXlmn
  0: abcDEXypqreX
  1: abcDEX
-     ** Failers
-No match
+\= Expect no match
      \x{1bb}XY
 No match
      \x{2b0}XY
@@ -2751,8 +2571,7 @@ No match
      abcDEXypqreXlmn
  0: abcDEXypqreX
  1: abcDEX
-     ** Failers
-No match
+\= Expect no match
      \x{1bb}XY
 No match
      \x{2b0}XY
@@ -2767,8 +2586,7 @@ No match
  0: \x{1bb}X
      \x{2b0}XY
  0: \x{2b0}X
-     ** Failers
-No match
+\= Expect no match
      \x{1c5}XY
 No match
      AXY
@@ -2781,8 +2599,7 @@ No match
  0: \x{1bb}X
      \x{2b0}XY
  0: \x{2b0}X
-     ** Failers
-No match
+\= Expect no match
      \x{1c5}XY
 No match
      AXY
@@ -2804,7 +2621,7 @@ No match
     \x{c0}\x{e0}\x{116}\x{117}
  0: \x{c0}\x{e0}\x{116}\x{117}
 
-/Check property support in non-UTF-8 mode/
+# Check property support in non-UTF-8 mode
  
 /\p{L}{4}/
     123abcdefg
@@ -2825,8 +2642,7 @@ No match
 /\x{a77d}\x{1d79}/utf
     \x{a77d}\x{1d79}
  0: \x{a77d}\x{1d79}
-    ** Failers
-No match
+\= Expect no match
     \x{1d79}\x{a77d}
 No match
 
@@ -2841,16 +2657,14 @@ No match
  0: \x{a6c}
     \x{10a7}
  0: \x{10a7}
-    ** Failers
-No match
+\= Expect no match
     _ABC
 No match
 
 /^\p{Xan}+/utf
     ABCD1234\x{6ca}\x{a6c}\x{10a7}_
  0: ABCD1234\x{6ca}\x{a6c}\x{10a7}
-    ** Failers
-No match
+\= Expect no match
     _ABC
 No match
 
@@ -2873,24 +2687,21 @@ No match
  0: \x{a6c}
     \x{10a7}
  0: \x{10a7}
-    ** Failers
-No match
+\= Expect no match
     _ABC
 No match
  
 /^[\p{Xan}]+/utf
     ABCD1234\x{6ca}\x{a6c}\x{10a7}_
  0: ABCD1234\x{6ca}\x{a6c}\x{10a7}
-    ** Failers
-No match
+\= Expect no match
     _ABC
 No match
 
 /^>\p{Xsp}/utf
     >\x{1680}\x{2028}\x{0b}
  0: >\x{1680}
-    ** Failers
-No match
+\= Expect no match
     \x{0b}
 No match
 
@@ -2951,8 +2762,7 @@ No match
  0: >\x{1680}
     >\x{a0}
  0: >\x{a0}
-    ** Failers
-No match
+\= Expect no match
     \x{0b}
 No match
 
@@ -3006,8 +2816,7 @@ No match
  0: \x{10a7}
     _ABC
  0: _
-    ** Failers
-No match
+\= Expect no match
     []
 No match
 
@@ -3036,8 +2845,7 @@ No match
  0: \x{10a7}
     _ABC
  0: _
-    ** Failers
-No match
+\= Expect no match
     []
 No match
  
@@ -3064,8 +2872,7 @@ No match
 /\b...\B/utf
     abc_
  0: abc
-    ** Failers
- 0: Fai
+\= Expect no match
     \x{37e}abc\x{376}
 No match
     \x{37e}\x{376}\x{371}\x{393}\x{394}
@@ -3170,9 +2977,7 @@ Partial match: AA
     \x{1b04}\x{1b04}X
  0: \x{1b04}\x{1b04}
  0+ X
-    *These match up to the roman letters
- 0: *
- 0+ These match up to the roman letters
+\= These match up to the roman letters
     \x{1111}\x{1111}L,L
  0: \x{1111}\x{1111}
  0+ L,L
@@ -3203,9 +3008,7 @@ Partial match: AA
     \x{ad89}\x{11fe}\x{11fe}LVT, T, T
  0: \x{ad89}\x{11fe}\x{11fe}
  0+ LVT, T, T
-    *These match just the first codepoint (invalid sequence)
- 0: *
- 0+ These match just the first codepoint (invalid sequence)
+\= These match just the first codepoint (invalid sequence)
     \x{1111}\x{11fe}L, T
  0: \x{1111}
  0+ \x{11fe}L, T
@@ -3251,9 +3054,7 @@ Partial match: AA
     \x{11fe}\x{ad89}T, LVT
  0: \x{11fe}
  0+ \x{ad89}T, LVT
-    *Test extend and spacing mark
- 0: *
- 0+ Test extend and spacing mark
+\= Test extend and spacing mark
     \x{1111}\x{ae4c}\x{0711}L, LV, extend
  0: \x{1111}\x{ae4c}\x{711}
  0+ L, LV, extend
@@ -3263,9 +3064,7 @@ Partial match: AA
     \x{1111}\x{ae4c}\x{1b04}\x{0711}\x{1b04}L, LV, spacing mark, extend, spacing mark
  0: \x{1111}\x{ae4c}\x{1b04}\x{711}\x{1b04}
  0+ L, LV, spacing mark, extend, spacing mark
-    *Test CR, LF, and control
- 0: *
- 0+ Test CR, LF, and control
+\= Test CR, LF, and control
     \x0d\x{0711}CR, extend
  0: \x{0d}
  0+ \x{711}CR, extend
@@ -3284,9 +3083,7 @@ Partial match: AA
     \x09\x{1b04}Control, spacingmark
  0: \x{09}
  0+ \x{1b04}Control, spacingmark
-    *There are no Prepend characters, so we can't test Prepend, CR
- 0: *
- 0+ There are no Prepend characters, so we can't test Prepend, CR
+\= There are no Prepend characters, so we can't test Prepend, CR
     
 /^(?>\X{2})X/utf,aftertext
     \x{1111}\x{ae4c}\x{1111}\x{ae4c}X
@@ -3366,7 +3163,6 @@ Partial match: AA
     \x{00c5}\x{00e5}\x{212b}
  0: \x{c5}\x{e5}\x{212b}
 
-
 /\x{01c4}+/i,utf
     \x{01c4}\x{01c5}\x{01c6}
  0: \x{1c4}\x{1c5}\x{1c6}
@@ -3379,7 +3175,6 @@ Partial match: AA
     \x{01c4}\x{01c5}\x{01c6}
  0: \x{1c4}\x{1c5}\x{1c6}
 
-
 /\x{01c7}+/i,utf
     \x{01c7}\x{01c8}\x{01c9}
  0: \x{1c7}\x{1c8}\x{1c9}
@@ -3405,7 +3200,6 @@ Partial match: AA
     \x{01ca}\x{01cb}\x{01cc}
  0: \x{1ca}\x{1cb}\x{1cc}
 
-
 /\x{01f1}+/i,utf
     \x{01f1}\x{01f2}\x{01f3}
  0: \x{1f1}\x{1f2}\x{1f3}
@@ -3418,7 +3212,6 @@ Partial match: AA
     \x{01f1}\x{01f2}\x{01f3}
  0: \x{1f1}\x{1f2}\x{1f3}
 
-
 /\x{0345}+/i,utf
     \x{0345}\x{0399}\x{03b9}\x{1fbe}
  0: \x{345}\x{399}\x{3b9}\x{1fbe}
@@ -3435,7 +3228,6 @@ Partial match: AA
     \x{0345}\x{0399}\x{03b9}\x{1fbe}
  0: \x{345}\x{399}\x{3b9}\x{1fbe}
 
-
 /\x{0392}+/i,utf
     \x{0392}\x{03b2}\x{03d0}
  0: \x{392}\x{3b2}\x{3d0}
@@ -3461,7 +3253,6 @@ Partial match: AA
     \x{0395}\x{03b5}\x{03f5}
  0: \x{395}\x{3b5}\x{3f5}
 
-
 /\x{0398}+/i,utf
     \x{0398}\x{03b8}\x{03d1}\x{03f4}
  0: \x{398}\x{3b8}\x{3d1}\x{3f4}
@@ -3477,7 +3268,6 @@ Partial match: AA
 /\x{03f4}+/i,utf
     \x{0398}\x{03b8}\x{03d1}\x{03f4}
  0: \x{398}\x{3b8}\x{3d1}\x{3f4}
-    
 
 /\x{039a}+/i,utf
     \x{039a}\x{03ba}\x{03f0}
@@ -3491,7 +3281,6 @@ Partial match: AA
     \x{039a}\x{03ba}\x{03f0}
  0: \x{39a}\x{3ba}\x{3f0}
     
-
 /\x{03a0}+/i,utf
     \x{03a0}\x{03c0}\x{03d6}
  0: \x{3a0}\x{3c0}\x{3d6}
@@ -3504,7 +3293,6 @@ Partial match: AA
     \x{03a0}\x{03c0}\x{03d6}
  0: \x{3a0}\x{3c0}\x{3d6}
 
-
 /\x{03a1}+/i,utf
     \x{03a1}\x{03c1}\x{03f1}
  0: \x{3a1}\x{3c1}\x{3f1}
@@ -3517,7 +3305,6 @@ Partial match: AA
     \x{03a1}\x{03c1}\x{03f1}
  0: \x{3a1}\x{3c1}\x{3f1}
 
-
 /\x{03a3}+/i,utf
     \x{03A3}\x{03C2}\x{03C3}
  0: \x{3a3}\x{3c2}\x{3c3}
@@ -3529,7 +3316,6 @@ Partial match: AA
 /\x{03c3}+/i,utf
     \x{03A3}\x{03C2}\x{03C3}
  0: \x{3a3}\x{3c2}\x{3c3}
-    
 
 /\x{03a6}+/i,utf
     \x{03a6}\x{03c6}\x{03d5}
@@ -3543,7 +3329,6 @@ Partial match: AA
     \x{03a6}\x{03c6}\x{03d5}
  0: \x{3a6}\x{3c6}\x{3d5}
 
-
 /\x{03c9}+/i,utf
     \x{03c9}\x{03a9}\x{2126}
  0: \x{3c9}\x{3a9}\x{2126}
@@ -3556,7 +3341,6 @@ Partial match: AA
     \x{03c9}\x{03a9}\x{2126}
  0: \x{3c9}\x{3a9}\x{2126}
     
-
 /\x{1e60}+/i,utf
     \x{1e60}\x{1e61}\x{1e9b}
  0: \x{1e60}\x{1e61}\x{1e9b}
@@ -3569,7 +3353,6 @@ Partial match: AA
     \x{1e60}\x{1e61}\x{1e9b}
  0: \x{1e60}\x{1e61}\x{1e9b}
     
-
 /\x{1e9e}+/i,utf
     \x{1e9e}\x{00df}
  0: \x{1e9e}\x{df}
@@ -3578,7 +3361,6 @@ Partial match: AA
     \x{1e9e}\x{00df}
  0: \x{1e9e}\x{df}
     
-
 /\x{1f88}+/i,utf
     \x{1f88}\x{1f80}
  0: \x{1f88}\x{1f80}
@@ -3599,7 +3381,6 @@ Partial match: AA
     \x{004b}\x{006b}\x{212a}
  0: Kk\x{212a}
 
-
 /\x{0053}+/i,utf
     \x{0053}\x{0073}\x{017f}
  0: Ss\x{17f}
@@ -3613,24 +3394,29 @@ Partial match: AA
  0: Ss\x{17f}
 
 /ist/i,utf
+\= Expect no match
     ikt
 No match
 
 /is+t/i,utf
     iSs\x{17f}t
  0: iSs\x{17f}t
+\= Expect no match
     ikt
 No match
 
 /is+?t/i,utf
+\= Expect no match
     ikt
 No match
 
 /is?t/i,utf
+\= Expect no match
     ikt
 No match
 
 /is{2}t/i,utf
+\= Expect no match
     iskt
 No match
 
@@ -3643,16 +3429,14 @@ No match
  0: `
     \x{1234}abc
  0: \x{1234}
-    ** Failers
-No match
+\= Expect no match
     abc
 No match
 
 /^\p{Xuc}+/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}\x{e000}
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
@@ -3664,32 +3448,28 @@ No match
  3: $@`
  4: $@
  5: $
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\p{Xuc}+?\*/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}\x{e000}*
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\p{Xuc}++/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}\x{e000}
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\p{Xuc}{3,5}/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
@@ -3698,32 +3478,28 @@ No match
  0: $@`\x{a0}\x{1234}
  1: $@`\x{a0}
  2: $@`
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^[\p{Xuc}]/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^[\p{Xuc}]+/utf
     $@`\x{a0}\x{1234}\x{e000}**
  0: $@`\x{a0}\x{1234}\x{e000}
-    ** Failers
-No match
+\= Expect no match
     \x{9f}
 No match
 
 /^\P{Xuc}/utf
     abc
  0: a
-    ** Failers
- 0: *
+\= Expect no match
     $abc
 No match
     @abc
@@ -3736,8 +3512,7 @@ No match
 /^[\P{Xuc}]/utf
     abc
  0: a
-    ** Failers
- 0: *
+\= Expect no match
     $abc
 No match
     @abc
diff --git a/testdata/testoutput8-16 b/testdata/testoutput8-16-2
index 0f9fa6a..05669bb 100644
--- a/testdata/testoutput8-16
+++ b/testdata/testoutput8-16-2
@@ -1,8 +1,11 @@
-# These are a few representative patterns whose lengths and offsets are to be
-# shown when the link size is 2. This is just a doublecheck test to ensure the
-# sizes don't go horribly wrong when something is changed. The pattern contents
-# are all themselves checked in other tests. Unicode, including property
-# support, is required for these tests.
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
 
 #pattern fullbincode,memory
 
@@ -378,7 +381,7 @@ Options: utf
 First code unit = 'A'
 Last code unit = '.'
 Subject length lower bound = 4
-    
+
 /\x{D55c}\x{ad6d}\x{C5B4}/I,utf
 Memory allocation (code space): 22
 ------------------------------------------------------------------
@@ -842,11 +845,186 @@ Memory allocation (code space): 14
 
 # Check the absolute limit on nesting (?| etc. This varies with code unit
 # width because the workspace is a different number of bytes. It will fail
-# in 8-bit and 16-bit but not in 32-bit.
-    
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
 /(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
 )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
 /parens_nest_limit=1000,-fullbincode
 Failed: error 184 at offset 1540: (?| and/or (?J: or (?x: parentheses are too deeply nested
 
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+Failed: error 186 at offset 594: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+Failed: error 186 at offset 594: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+Failed: error 186 at offset 594: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+Failed: error 186 at offset 594: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+Failed: error 186 at offset 594: regular expression is too complicated
+
+/(?(1)(?1)){8,}+()/debug
+------------------------------------------------------------------
+  0  79 Bra
+  2  70 Once
+  4   6 Cond
+  6   1 Cond ref
+  8  74 Recurse
+ 10   6 Ket
+ 12   6 Cond
+ 14   1 Cond ref
+ 16  74 Recurse
+ 18   6 Ket
+ 20   6 Cond
+ 22   1 Cond ref
+ 24  74 Recurse
+ 26   6 Ket
+ 28   6 Cond
+ 30   1 Cond ref
+ 32  74 Recurse
+ 34   6 Ket
+ 36   6 Cond
+ 38   1 Cond ref
+ 40  74 Recurse
+ 42   6 Ket
+ 44   6 Cond
+ 46   1 Cond ref
+ 48  74 Recurse
+ 50   6 Ket
+ 52   6 Cond
+ 54   1 Cond ref
+ 56  74 Recurse
+ 58   6 Ket
+ 60  10 SBraPos
+ 62   6 SCond
+ 64   1 Cond ref
+ 66  74 Recurse
+ 68   6 Ket
+ 70  10 KetRpos
+ 72  70 Ket
+ 74   3 CBra 1
+ 77   3 Ket
+ 79  79 Ket
+ 81     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: 
+ 1: 
+
+/(?(1)|a(?1)b){2,}+()/debug
+------------------------------------------------------------------
+  0  43 Bra
+  2  34 Once
+  4   4 Cond
+  6   1 Cond ref
+  8   8 Alt
+ 10     a
+ 12  38 Recurse
+ 14     b
+ 16  12 Ket
+ 18  16 SBraPos
+ 20   4 SCond
+ 22   1 Cond ref
+ 24   8 Alt
+ 26     a
+ 28  38 Recurse
+ 30     b
+ 32  12 Ket
+ 34  16 KetRpos
+ 36  34 Ket
+ 38   3 CBra 1
+ 41   3 Ket
+ 43  43 Ket
+ 45     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcde
+No match
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+------------------------------------------------------------------
+  0 133 Bra
+  2  41 CBra 1
+  5   2 Recurse
+  7  88 Recurse
+  9  93 Recurse
+ 11  98 Recurse
+ 13 103 Recurse
+ 15 108 Recurse
+ 17 113 Recurse
+ 19 118 Recurse
+ 21 123 Recurse
+ 23 123 Recurse
+ 25 118 Recurse
+ 27 113 Recurse
+ 29 108 Recurse
+ 31 103 Recurse
+ 33  98 Recurse
+ 35  93 Recurse
+ 37  88 Recurse
+ 39   2 Recurse
+ 41   0 Recurse
+ 43  41 Ket
+ 45  41 SCBra 1
+ 48   2 Recurse
+ 50  88 Recurse
+ 52  93 Recurse
+ 54  98 Recurse
+ 56 103 Recurse
+ 58 108 Recurse
+ 60 113 Recurse
+ 62 118 Recurse
+ 64 123 Recurse
+ 66 123 Recurse
+ 68 118 Recurse
+ 70 113 Recurse
+ 72 108 Recurse
+ 74 103 Recurse
+ 76  98 Recurse
+ 78  93 Recurse
+ 80  88 Recurse
+ 82   2 Recurse
+ 84   0 Recurse
+ 86  41 KetRmax
+ 88   3 CBra 2
+ 91   3 Ket
+ 93   3 CBra 3
+ 96   3 Ket
+ 98   3 CBra 4
+101   3 Ket
+103   3 CBra 5
+106   3 Ket
+108   3 CBra 6
+111   3 Ket
+113   3 CBra 7
+116   3 Ket
+118   3 CBra 8
+121   3 Ket
+123   3 CBra 9
+126   3 Ket
+128   3 CBra 10
+131   3 Ket
+133 133 Ket
+135     End
+------------------------------------------------------------------
+Capturing subpattern count = 10
+May match empty string
+Subject length lower bound = 0
+
 # End of testinput8
diff --git a/testdata/testoutput8-16-3 b/testdata/testoutput8-16-3
new file mode 100644
index 0000000..31884e1
--- /dev/null
+++ b/testdata/testoutput8-16-3
@@ -0,0 +1,1026 @@
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
+
+#pattern fullbincode,memory
+
+/((?i)b)/
+Memory allocation (code space): 32
+------------------------------------------------------------------
+  0  12 Bra
+  3   6 CBra 1
+  7  /i b
+  9   6 Ket
+ 12  12 Ket
+ 15     End
+------------------------------------------------------------------
+
+/(?s)(.*X|^B)/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0  20 Bra
+  3   8 CBra 1
+  7     AllAny*
+  9     X
+ 11   6 Alt
+ 14     ^
+ 15     B
+ 17  14 Ket
+ 20  20 Ket
+ 23     End
+------------------------------------------------------------------
+
+/(?s:.*X|^B)/
+Memory allocation (code space): 46
+------------------------------------------------------------------
+  0  19 Bra
+  3   7 Bra
+  6     AllAny*
+  8     X
+ 10   6 Alt
+ 13     ^
+ 14     B
+ 16  13 Ket
+ 19  19 Ket
+ 22     End
+------------------------------------------------------------------
+
+/^[[:alnum:]]/
+Memory allocation (code space): 50
+------------------------------------------------------------------
+  0  21 Bra
+  3     ^
+  4     [0-9A-Za-z]
+ 21  21 Ket
+ 24     End
+------------------------------------------------------------------
+
+/#/Ix
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   3 Bra
+  3   3 Ket
+  6     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+May match empty string
+Options: extended
+Subject length lower bound = 0
+
+/a#/Ix
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     a
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: extended
+First code unit = 'a'
+Subject length lower bound = 1
+
+/x?+/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     x?+
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/x++/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     x++
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/x{1,3}+/
+Memory allocation (code space): 24
+------------------------------------------------------------------
+  0   8 Bra
+  3     x
+  5     x{0,2}+
+  8   8 Ket
+ 11     End
+------------------------------------------------------------------
+
+/(x)*+/
+Memory allocation (code space): 34
+------------------------------------------------------------------
+  0  13 Bra
+  3     Braposzero
+  4   6 CBraPos 1
+  8     x
+ 10   6 KetRpos
+ 13  13 Ket
+ 16     End
+------------------------------------------------------------------
+
+/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/
+Memory allocation (code space): 166
+------------------------------------------------------------------
+  0  79 Bra
+  3     ^
+  4  72 CBra 1
+  8   6 CBra 2
+ 12     a+
+ 14   6 Ket
+ 17  22 CBra 3
+ 21     [ab]+?
+ 39  22 Ket
+ 42  22 CBra 4
+ 46     [bc]+
+ 64  22 Ket
+ 67   6 CBra 5
+ 71     \w*+
+ 73   6 Ket
+ 76  72 Ket
+ 79  79 Ket
+ 82     End
+------------------------------------------------------------------
+
+"8J\$WE\<\.rX\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 1652
+------------------------------------------------------------------
+  0 822 Bra
+  3     8J$WE<.rX+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+821     \b
+822 822 Ket
+825     End
+------------------------------------------------------------------
+
+"\$\<\.X\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 1632
+------------------------------------------------------------------
+  0 812 Bra
+  3     $<.X+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+811     \b
+812 812 Ket
+815     End
+------------------------------------------------------------------
+
+/(a(?1)b)/
+Memory allocation (code space): 42
+------------------------------------------------------------------
+  0  17 Bra
+  3  11 CBra 1
+  7     a
+  9   3 Recurse
+ 12     b
+ 14  11 Ket
+ 17  17 Ket
+ 20     End
+------------------------------------------------------------------
+
+/(a(?1)+b)/
+Memory allocation (code space): 54
+------------------------------------------------------------------
+  0  23 Bra
+  3  17 CBra 1
+  7     a
+  9   6 Once
+ 12   3 Recurse
+ 15   6 KetRmax
+ 18     b
+ 20  17 Ket
+ 23  23 Ket
+ 26     End
+------------------------------------------------------------------
+
+/a(?P<name1>b|c)d(?P<longername2>e)/
+Memory allocation (code space): 68
+------------------------------------------------------------------
+  0  30 Bra
+  3     a
+  5   6 CBra 1
+  9     b
+ 11   5 Alt
+ 14     c
+ 16  11 Ket
+ 19     d
+ 21   6 CBra 2
+ 25     e
+ 27   6 Ket
+ 30  30 Ket
+ 33     End
+------------------------------------------------------------------
+
+/(?:a(?P<c>c(?P<d>d)))(?P<a>a)/
+Memory allocation (code space): 84
+------------------------------------------------------------------
+  0  38 Bra
+  3  23 Bra
+  6     a
+  8  15 CBra 1
+ 12     c
+ 14   6 CBra 2
+ 18     d
+ 20   6 Ket
+ 23  15 Ket
+ 26  23 Ket
+ 29   6 CBra 3
+ 33     a
+ 35   6 Ket
+ 38  38 Ket
+ 41     End
+------------------------------------------------------------------
+
+/(?P<a>a)...(?P=a)bbb(?P>a)d/
+Memory allocation (code space): 64
+------------------------------------------------------------------
+  0  28 Bra
+  3   6 CBra 1
+  7     a
+  9   6 Ket
+ 12     Any
+ 13     Any
+ 14     Any
+ 15     \1
+ 17     bbb
+ 23   3 Recurse
+ 26     d
+ 28  28 Ket
+ 31     End
+------------------------------------------------------------------
+
+/abc(?C255)de(?C)f/
+Memory allocation (code space): 62
+------------------------------------------------------------------
+  0  27 Bra
+  3     abc
+  9     Callout 255 10 1
+ 15     de
+ 19     Callout 0 16 1
+ 25     f
+ 27  27 Ket
+ 30     End
+------------------------------------------------------------------
+
+/abcde/auto_callout
+Memory allocation (code space): 106
+------------------------------------------------------------------
+  0  49 Bra
+  3     Callout 255 0 1
+  9     a
+ 11     Callout 255 1 1
+ 17     b
+ 19     Callout 255 2 1
+ 25     c
+ 27     Callout 255 3 1
+ 33     d
+ 35     Callout 255 4 1
+ 41     e
+ 43     Callout 255 5 0
+ 49  49 Ket
+ 52     End
+------------------------------------------------------------------
+
+/\x{100}/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{100}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/\x{1000}/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{1000}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/\x{10000}/utf
+Memory allocation (code space): 20
+------------------------------------------------------------------
+  0   6 Bra
+  3     \x{10000}
+  6   6 Ket
+  9     End
+------------------------------------------------------------------
+
+/\x{100000}/utf
+Memory allocation (code space): 20
+------------------------------------------------------------------
+  0   6 Bra
+  3     \x{100000}
+  6   6 Ket
+  9     End
+------------------------------------------------------------------
+
+/\x{10ffff}/utf
+Memory allocation (code space): 20
+------------------------------------------------------------------
+  0   6 Bra
+  3     \x{10ffff}
+  6   6 Ket
+  9     End
+------------------------------------------------------------------
+
+/\x{110000}/utf
+Failed: error 134 at offset 9: character code point value in \x{} or \o{} is too large
+
+/[\x{ff}]/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{ff}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[\x{100}]/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{100}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/\x80/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{80}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/\xff/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{ff}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/\x{0041}\x{2262}\x{0391}\x{002e}/I,utf
+Memory allocation (code space): 30
+------------------------------------------------------------------
+  0  11 Bra
+  3     A\x{2262}\x{391}.
+ 11  11 Ket
+ 14     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = 'A'
+Last code unit = '.'
+Subject length lower bound = 4
+
+/\x{D55c}\x{ad6d}\x{C5B4}/I,utf
+Memory allocation (code space): 26
+------------------------------------------------------------------
+  0   9 Bra
+  3     \x{d55c}\x{ad6d}\x{c5b4}
+  9   9 Ket
+ 12     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \x{d55c}
+Last code unit = \x{c5b4}
+Subject length lower bound = 3
+
+/\x{65e5}\x{672c}\x{8a9e}/I,utf
+Memory allocation (code space): 26
+------------------------------------------------------------------
+  0   9 Bra
+  3     \x{65e5}\x{672c}\x{8a9e}
+  9   9 Ket
+ 12     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \x{65e5}
+Last code unit = \x{8a9e}
+Subject length lower bound = 3
+
+/[\x{100}]/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{100}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[Z\x{100}]/utf
+Memory allocation (code space): 60
+------------------------------------------------------------------
+  0  26 Bra
+  3     [Z\x{100}]
+ 26  26 Ket
+ 29     End
+------------------------------------------------------------------
+
+/^[\x{100}\E-\Q\E\x{150}]/utf
+Memory allocation (code space): 32
+------------------------------------------------------------------
+  0  12 Bra
+  3     ^
+  4     [\x{100}-\x{150}]
+ 12  12 Ket
+ 15     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E]/utf
+Memory allocation (code space): 32
+------------------------------------------------------------------
+  0  12 Bra
+  3     ^
+  4     [\x{100}-\x{150}]
+ 12  12 Ket
+ 15     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E/utf
+Failed: error 106 at offset 13: missing terminating ] for character class
+
+/[\p{L}]/
+Memory allocation (code space): 30
+------------------------------------------------------------------
+  0  11 Bra
+  3     [\p{L}]
+ 11  11 Ket
+ 14     End
+------------------------------------------------------------------
+
+/[\p{^L}]/
+Memory allocation (code space): 30
+------------------------------------------------------------------
+  0  11 Bra
+  3     [\P{L}]
+ 11  11 Ket
+ 14     End
+------------------------------------------------------------------
+
+/[\P{L}]/
+Memory allocation (code space): 30
+------------------------------------------------------------------
+  0  11 Bra
+  3     [\P{L}]
+ 11  11 Ket
+ 14     End
+------------------------------------------------------------------
+
+/[\P{^L}]/
+Memory allocation (code space): 30
+------------------------------------------------------------------
+  0  11 Bra
+  3     [\p{L}]
+ 11  11 Ket
+ 14     End
+------------------------------------------------------------------
+
+/[abc\p{L}\x{0660}]/utf
+Memory allocation (code space): 66
+------------------------------------------------------------------
+  0  29 Bra
+  3     [a-c\p{L}\x{660}]
+ 29  29 Ket
+ 32     End
+------------------------------------------------------------------
+
+/[\p{Nd}]/utf
+Memory allocation (code space): 30
+------------------------------------------------------------------
+  0  11 Bra
+  3     [\p{Nd}]
+ 11  11 Ket
+ 14     End
+------------------------------------------------------------------
+
+/[\p{Nd}+-]+/utf
+Memory allocation (code space): 64
+------------------------------------------------------------------
+  0  28 Bra
+  3     [+\-\p{Nd}]++
+ 28  28 Ket
+ 31     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/i,utf
+Memory allocation (code space): 36
+------------------------------------------------------------------
+  0  14 Bra
+  3  /i A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 14  14 Ket
+ 17     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
+Memory allocation (code space): 36
+------------------------------------------------------------------
+  0  14 Bra
+  3     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 14  14 Ket
+ 17     End
+------------------------------------------------------------------
+
+/[\x{105}-\x{109}]/i,utf
+Memory allocation (code space): 30
+------------------------------------------------------------------
+  0  11 Bra
+  3     [\x{104}-\x{109}]
+ 11  11 Ket
+ 14     End
+------------------------------------------------------------------
+
+/( ( (?(1)0|) )*   )/x
+Memory allocation (code space): 70
+------------------------------------------------------------------
+  0  31 Bra
+  3  25 CBra 1
+  7     Brazero
+  8  17 SCBra 2
+ 12   7 Cond
+ 15   1 Cond ref
+ 17     0
+ 19   3 Alt
+ 22  10 Ket
+ 25  17 KetRmax
+ 28  25 Ket
+ 31  31 Ket
+ 34     End
+------------------------------------------------------------------
+
+/(  (?(1)0|)*   )/x
+Memory allocation (code space): 56
+------------------------------------------------------------------
+  0  24 Bra
+  3  18 CBra 1
+  7     Brazero
+  8   7 SCond
+ 11   1 Cond ref
+ 13     0
+ 15   3 Alt
+ 18  10 KetRmax
+ 21  18 Ket
+ 24  24 Ket
+ 27     End
+------------------------------------------------------------------
+
+/[a]/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     a
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[a]/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     a
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[\xaa]/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{aa}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[\xaa]/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     \x{aa}
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[^a]/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     [^a]
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[^a]/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     [^a]
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[^\xaa]/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     [^\x{aa}]
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+/[^\xaa]/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0   5 Bra
+  3     [^\x{aa}]
+  5   5 Ket
+  8     End
+------------------------------------------------------------------
+
+#pattern -memory
+
+/[^\d]/utf,ucp
+------------------------------------------------------------------
+  0  11 Bra
+  3     [^\p{Nd}]
+ 11  11 Ket
+ 14     End
+------------------------------------------------------------------
+
+/[[:^alpha:][:^cntrl:]]+/utf,ucp
+------------------------------------------------------------------
+  0  15 Bra
+  3     [\P{L}\P{Cc}]++
+ 15  15 Ket
+ 18     End
+------------------------------------------------------------------
+
+/[[:^cntrl:][:^alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  15 Bra
+  3     [\P{Cc}\P{L}]++
+ 15  15 Ket
+ 18     End
+------------------------------------------------------------------
+
+/[[:alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  12 Bra
+  3     [\p{L}]++
+ 12  12 Ket
+ 15     End
+------------------------------------------------------------------
+
+/[[:^alpha:]\S]+/utf,ucp
+------------------------------------------------------------------
+  0  15 Bra
+  3     [\P{L}\P{Xsp}]++
+ 15  15 Ket
+ 18     End
+------------------------------------------------------------------
+
+/abc(d|e)(*THEN)x(123(*THEN)4|567(b|q)(*THEN)xx)/
+------------------------------------------------------------------
+  0  70 Bra
+  3     abc
+  9   6 CBra 1
+ 13     d
+ 15   5 Alt
+ 18     e
+ 20  11 Ket
+ 23     *THEN
+ 24     x
+ 26  13 CBra 2
+ 30     123
+ 36     *THEN
+ 37     4
+ 39  28 Alt
+ 42     567
+ 48   6 CBra 3
+ 52     b
+ 54   5 Alt
+ 57     q
+ 59  11 Ket
+ 62     *THEN
+ 63     xx
+ 67  41 Ket
+ 70  70 Ket
+ 73     End
+------------------------------------------------------------------
+
+/(((a\2)|(a*)\g<-1>))*a?/
+------------------------------------------------------------------
+  0  52 Bra
+  3     Brazero
+  4  43 SCBra 1
+  8  36 Once
+ 11  15 CBra 2
+ 15   8 CBra 3
+ 19     a
+ 21     \2
+ 23   8 Ket
+ 26  15 Alt
+ 29   6 CBra 4
+ 33     a*
+ 35   6 Ket
+ 38  29 Recurse
+ 41  30 Ket
+ 44  36 Ket
+ 47  43 KetRmax
+ 50     a?+
+ 52  52 Ket
+ 55     End
+------------------------------------------------------------------
+
+/((?+1)(\1))/
+------------------------------------------------------------------
+  0  28 Bra
+  3  22 Once
+  6  16 CBra 1
+ 10  13 Recurse
+ 13   6 CBra 2
+ 17     \1
+ 19   6 Ket
+ 22  16 Ket
+ 25  22 Ket
+ 28  28 Ket
+ 31     End
+------------------------------------------------------------------
+
+"(?1)(?#?'){2}(a)"
+------------------------------------------------------------------
+  0  30 Bra
+  3   6 Once
+  6  21 Recurse
+  9   6 Ket
+ 12   6 Once
+ 15  21 Recurse
+ 18   6 Ket
+ 21   6 CBra 1
+ 25     a
+ 27   6 Ket
+ 30  30 Ket
+ 33     End
+------------------------------------------------------------------
+
+/.((?2)(?R)|\1|$)()/
+------------------------------------------------------------------
+  0  39 Bra
+  3     Any
+  4  25 Once
+  7  10 CBra 1
+ 11  32 Recurse
+ 14   0 Recurse
+ 17   5 Alt
+ 20     \1
+ 22   4 Alt
+ 25     $
+ 26  19 Ket
+ 29  25 Ket
+ 32   4 CBra 2
+ 36   4 Ket
+ 39  39 Ket
+ 42     End
+------------------------------------------------------------------
+
+/.((?3)(?R)()(?2)|\1|$)()/
+------------------------------------------------------------------
+  0  49 Bra
+  3     Any
+  4  35 Once
+  7  20 CBra 1
+ 11  42 Recurse
+ 14   0 Recurse
+ 17   4 CBra 2
+ 21   4 Ket
+ 24  17 Recurse
+ 27   5 Alt
+ 30     \1
+ 32   4 Alt
+ 35     $
+ 36  29 Ket
+ 39  35 Ket
+ 42   4 CBra 3
+ 46   4 Ket
+ 49  49 Ket
+ 52     End
+------------------------------------------------------------------
+
+/(?1)()((((((\1++))\x85)+)|))/
+------------------------------------------------------------------
+  0  69 Bra
+  3   6 Recurse
+  6   4 CBra 1
+ 10   4 Ket
+ 13  53 CBra 2
+ 17  43 CBra 3
+ 21  36 CBra 4
+ 25  29 CBra 5
+ 29  20 CBra 6
+ 33  13 CBra 7
+ 37   6 Once
+ 40     \1+
+ 43   6 Ket
+ 46  13 Ket
+ 49  20 Ket
+ 52     \x{85}
+ 54  29 KetRmax
+ 57  36 Ket
+ 60   3 Alt
+ 63  46 Ket
+ 66  53 Ket
+ 69  69 Ket
+ 72     End
+------------------------------------------------------------------
+
+# Check the absolute limit on nesting (?| etc. This varies with code unit
+# width because the workspace is a different number of bytes. It will fail
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
+/(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
+)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
+/parens_nest_limit=1000,-fullbincode
+
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+Failed: error 186 at offset 1147: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+Failed: error 186 at offset 1147: regular expression is too complicated
+
+/(?(1)(?1)){8,}+()/debug
+------------------------------------------------------------------
+  0 110 Bra
+  3  97 Once
+  6   8 Cond
+  9   1 Cond ref
+ 11 103 Recurse
+ 14   8 Ket
+ 17   8 Cond
+ 20   1 Cond ref
+ 22 103 Recurse
+ 25   8 Ket
+ 28   8 Cond
+ 31   1 Cond ref
+ 33 103 Recurse
+ 36   8 Ket
+ 39   8 Cond
+ 42   1 Cond ref
+ 44 103 Recurse
+ 47   8 Ket
+ 50   8 Cond
+ 53   1 Cond ref
+ 55 103 Recurse
+ 58   8 Ket
+ 61   8 Cond
+ 64   1 Cond ref
+ 66 103 Recurse
+ 69   8 Ket
+ 72   8 Cond
+ 75   1 Cond ref
+ 77 103 Recurse
+ 80   8 Ket
+ 83  14 SBraPos
+ 86   8 SCond
+ 89   1 Cond ref
+ 91 103 Recurse
+ 94   8 Ket
+ 97  14 KetRpos
+100  97 Ket
+103   4 CBra 1
+107   4 Ket
+110 110 Ket
+113     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: 
+ 1: 
+
+/(?(1)|a(?1)b){2,}+()/debug
+------------------------------------------------------------------
+  0  58 Bra
+  3  45 Once
+  6   5 Cond
+  9   1 Cond ref
+ 11  10 Alt
+ 14     a
+ 16  51 Recurse
+ 19     b
+ 21  15 Ket
+ 24  21 SBraPos
+ 27   5 SCond
+ 30   1 Cond ref
+ 32  10 Alt
+ 35     a
+ 37  51 Recurse
+ 40     b
+ 42  15 Ket
+ 45  21 KetRpos
+ 48  45 Ket
+ 51   4 CBra 1
+ 55   4 Ket
+ 58  58 Ket
+ 61     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcde
+No match
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+------------------------------------------------------------------
+  0 194 Bra
+  3  61 CBra 1
+  7   3 Recurse
+ 10 131 Recurse
+ 13 138 Recurse
+ 16 145 Recurse
+ 19 152 Recurse
+ 22 159 Recurse
+ 25 166 Recurse
+ 28 173 Recurse
+ 31 180 Recurse
+ 34 180 Recurse
+ 37 173 Recurse
+ 40 166 Recurse
+ 43 159 Recurse
+ 46 152 Recurse
+ 49 145 Recurse
+ 52 138 Recurse
+ 55 131 Recurse
+ 58   3 Recurse
+ 61   0 Recurse
+ 64  61 Ket
+ 67  61 SCBra 1
+ 71   3 Recurse
+ 74 131 Recurse
+ 77 138 Recurse
+ 80 145 Recurse
+ 83 152 Recurse
+ 86 159 Recurse
+ 89 166 Recurse
+ 92 173 Recurse
+ 95 180 Recurse
+ 98 180 Recurse
+101 173 Recurse
+104 166 Recurse
+107 159 Recurse
+110 152 Recurse
+113 145 Recurse
+116 138 Recurse
+119 131 Recurse
+122   3 Recurse
+125   0 Recurse
+128  61 KetRmax
+131   4 CBra 2
+135   4 Ket
+138   4 CBra 3
+142   4 Ket
+145   4 CBra 4
+149   4 Ket
+152   4 CBra 5
+156   4 Ket
+159   4 CBra 6
+163   4 Ket
+166   4 CBra 7
+170   4 Ket
+173   4 CBra 8
+177   4 Ket
+180   4 CBra 9
+184   4 Ket
+187   4 CBra 10
+191   4 Ket
+194 194 Ket
+197     End
+------------------------------------------------------------------
+Capturing subpattern count = 10
+May match empty string
+Subject length lower bound = 0
+
+# End of testinput8
diff --git a/testdata/testoutput8-32 b/testdata/testoutput8-32-2
index 1b843a5..babd0c7 100644
--- a/testdata/testoutput8-32
+++ b/testdata/testoutput8-32-2
@@ -1,8 +1,11 @@
-# These are a few representative patterns whose lengths and offsets are to be
-# shown when the link size is 2. This is just a doublecheck test to ensure the
-# sizes don't go horribly wrong when something is changed. The pattern contents
-# are all themselves checked in other tests. Unicode, including property
-# support, is required for these tests.
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
 
 #pattern fullbincode,memory
 
@@ -378,7 +381,7 @@ Options: utf
 First code unit = 'A'
 Last code unit = '.'
 Subject length lower bound = 4
-    
+
 /\x{D55c}\x{ad6d}\x{C5B4}/I,utf
 Memory allocation (code space): 44
 ------------------------------------------------------------------
@@ -842,10 +845,182 @@ Memory allocation (code space): 28
 
 # Check the absolute limit on nesting (?| etc. This varies with code unit
 # width because the workspace is a different number of bytes. It will fail
-# in 8-bit and 16-bit but not in 32-bit.
-    
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
 /(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
 )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
 /parens_nest_limit=1000,-fullbincode
 
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+Failed: error 186 at offset 979: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+Failed: error 186 at offset 979: regular expression is too complicated
+
+/(?(1)(?1)){8,}+()/debug
+------------------------------------------------------------------
+  0  79 Bra
+  2  70 Once
+  4   6 Cond
+  6   1 Cond ref
+  8  74 Recurse
+ 10   6 Ket
+ 12   6 Cond
+ 14   1 Cond ref
+ 16  74 Recurse
+ 18   6 Ket
+ 20   6 Cond
+ 22   1 Cond ref
+ 24  74 Recurse
+ 26   6 Ket
+ 28   6 Cond
+ 30   1 Cond ref
+ 32  74 Recurse
+ 34   6 Ket
+ 36   6 Cond
+ 38   1 Cond ref
+ 40  74 Recurse
+ 42   6 Ket
+ 44   6 Cond
+ 46   1 Cond ref
+ 48  74 Recurse
+ 50   6 Ket
+ 52   6 Cond
+ 54   1 Cond ref
+ 56  74 Recurse
+ 58   6 Ket
+ 60  10 SBraPos
+ 62   6 SCond
+ 64   1 Cond ref
+ 66  74 Recurse
+ 68   6 Ket
+ 70  10 KetRpos
+ 72  70 Ket
+ 74   3 CBra 1
+ 77   3 Ket
+ 79  79 Ket
+ 81     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: 
+ 1: 
+
+/(?(1)|a(?1)b){2,}+()/debug
+------------------------------------------------------------------
+  0  43 Bra
+  2  34 Once
+  4   4 Cond
+  6   1 Cond ref
+  8   8 Alt
+ 10     a
+ 12  38 Recurse
+ 14     b
+ 16  12 Ket
+ 18  16 SBraPos
+ 20   4 SCond
+ 22   1 Cond ref
+ 24   8 Alt
+ 26     a
+ 28  38 Recurse
+ 30     b
+ 32  12 Ket
+ 34  16 KetRpos
+ 36  34 Ket
+ 38   3 CBra 1
+ 41   3 Ket
+ 43  43 Ket
+ 45     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcde
+No match
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+------------------------------------------------------------------
+  0 133 Bra
+  2  41 CBra 1
+  5   2 Recurse
+  7  88 Recurse
+  9  93 Recurse
+ 11  98 Recurse
+ 13 103 Recurse
+ 15 108 Recurse
+ 17 113 Recurse
+ 19 118 Recurse
+ 21 123 Recurse
+ 23 123 Recurse
+ 25 118 Recurse
+ 27 113 Recurse
+ 29 108 Recurse
+ 31 103 Recurse
+ 33  98 Recurse
+ 35  93 Recurse
+ 37  88 Recurse
+ 39   2 Recurse
+ 41   0 Recurse
+ 43  41 Ket
+ 45  41 SCBra 1
+ 48   2 Recurse
+ 50  88 Recurse
+ 52  93 Recurse
+ 54  98 Recurse
+ 56 103 Recurse
+ 58 108 Recurse
+ 60 113 Recurse
+ 62 118 Recurse
+ 64 123 Recurse
+ 66 123 Recurse
+ 68 118 Recurse
+ 70 113 Recurse
+ 72 108 Recurse
+ 74 103 Recurse
+ 76  98 Recurse
+ 78  93 Recurse
+ 80  88 Recurse
+ 82   2 Recurse
+ 84   0 Recurse
+ 86  41 KetRmax
+ 88   3 CBra 2
+ 91   3 Ket
+ 93   3 CBra 3
+ 96   3 Ket
+ 98   3 CBra 4
+101   3 Ket
+103   3 CBra 5
+106   3 Ket
+108   3 CBra 6
+111   3 Ket
+113   3 CBra 7
+116   3 Ket
+118   3 CBra 8
+121   3 Ket
+123   3 CBra 9
+126   3 Ket
+128   3 CBra 10
+131   3 Ket
+133 133 Ket
+135     End
+------------------------------------------------------------------
+Capturing subpattern count = 10
+May match empty string
+Subject length lower bound = 0
+
 # End of testinput8
diff --git a/testdata/testoutput8-32-3 b/testdata/testoutput8-32-3
new file mode 100644
index 0000000..babd0c7
--- /dev/null
+++ b/testdata/testoutput8-32-3
@@ -0,0 +1,1026 @@
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
+
+#pattern fullbincode,memory
+
+/((?i)b)/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2   5 CBra 1
+  5  /i b
+  7   5 Ket
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/(?s)(.*X|^B)/
+Memory allocation (code space): 76
+------------------------------------------------------------------
+  0  16 Bra
+  2   7 CBra 1
+  5     AllAny*
+  7     X
+  9   5 Alt
+ 11     ^
+ 12     B
+ 14  12 Ket
+ 16  16 Ket
+ 18     End
+------------------------------------------------------------------
+
+/(?s:.*X|^B)/
+Memory allocation (code space): 72
+------------------------------------------------------------------
+  0  15 Bra
+  2   6 Bra
+  4     AllAny*
+  6     X
+  8   5 Alt
+ 10     ^
+ 11     B
+ 13  11 Ket
+ 15  15 Ket
+ 17     End
+------------------------------------------------------------------
+
+/^[[:alnum:]]/
+Memory allocation (code space): 60
+------------------------------------------------------------------
+  0  12 Bra
+  2     ^
+  3     [0-9A-Za-z]
+ 12  12 Ket
+ 14     End
+------------------------------------------------------------------
+
+/#/Ix
+Memory allocation (code space): 20
+------------------------------------------------------------------
+  0   2 Bra
+  2   2 Ket
+  4     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+May match empty string
+Options: extended
+Subject length lower bound = 0
+
+/a#/Ix
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     a
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: extended
+First code unit = 'a'
+Subject length lower bound = 1
+
+/x?+/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     x?+
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/x++/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     x++
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/x{1,3}+/
+Memory allocation (code space): 40
+------------------------------------------------------------------
+  0   7 Bra
+  2     x
+  4     x{0,2}+
+  7   7 Ket
+  9     End
+------------------------------------------------------------------
+
+/(x)*+/
+Memory allocation (code space): 52
+------------------------------------------------------------------
+  0  10 Bra
+  2     Braposzero
+  3   5 CBraPos 1
+  6     x
+  8   5 KetRpos
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+
+/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/
+Memory allocation (code space): 220
+------------------------------------------------------------------
+  0  52 Bra
+  2     ^
+  3  47 CBra 1
+  6   5 CBra 2
+  9     a+
+ 11   5 Ket
+ 13  13 CBra 3
+ 16     [ab]+?
+ 26  13 Ket
+ 28  13 CBra 4
+ 31     [bc]+
+ 41  13 Ket
+ 43   5 CBra 5
+ 46     \w*+
+ 48   5 Ket
+ 50  47 Ket
+ 52  52 Ket
+ 54     End
+------------------------------------------------------------------
+
+"8J\$WE\<\.rX\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 3296
+------------------------------------------------------------------
+  0 821 Bra
+  2     8J$WE<.rX+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+820     \b
+821 821 Ket
+823     End
+------------------------------------------------------------------
+
+"\$\<\.X\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 3256
+------------------------------------------------------------------
+  0 811 Bra
+  2     $<.X+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+810     \b
+811 811 Ket
+813     End
+------------------------------------------------------------------
+
+/(a(?1)b)/
+Memory allocation (code space): 64
+------------------------------------------------------------------
+  0  13 Bra
+  2   9 CBra 1
+  5     a
+  7   2 Recurse
+  9     b
+ 11   9 Ket
+ 13  13 Ket
+ 15     End
+------------------------------------------------------------------
+
+/(a(?1)+b)/
+Memory allocation (code space): 80
+------------------------------------------------------------------
+  0  17 Bra
+  2  13 CBra 1
+  5     a
+  7   4 Once
+  9   2 Recurse
+ 11   4 KetRmax
+ 13     b
+ 15  13 Ket
+ 17  17 Ket
+ 19     End
+------------------------------------------------------------------
+
+/a(?P<name1>b|c)d(?P<longername2>e)/
+Memory allocation (code space): 108
+------------------------------------------------------------------
+  0  24 Bra
+  2     a
+  4   5 CBra 1
+  7     b
+  9   4 Alt
+ 11     c
+ 13   9 Ket
+ 15     d
+ 17   5 CBra 2
+ 20     e
+ 22   5 Ket
+ 24  24 Ket
+ 26     End
+------------------------------------------------------------------
+
+/(?:a(?P<c>c(?P<d>d)))(?P<a>a)/
+Memory allocation (code space): 128
+------------------------------------------------------------------
+  0  29 Bra
+  2  18 Bra
+  4     a
+  6  12 CBra 1
+  9     c
+ 11   5 CBra 2
+ 14     d
+ 16   5 Ket
+ 18  12 Ket
+ 20  18 Ket
+ 22   5 CBra 3
+ 25     a
+ 27   5 Ket
+ 29  29 Ket
+ 31     End
+------------------------------------------------------------------
+
+/(?P<a>a)...(?P=a)bbb(?P>a)d/
+Memory allocation (code space): 108
+------------------------------------------------------------------
+  0  24 Bra
+  2   5 CBra 1
+  5     a
+  7   5 Ket
+  9     Any
+ 10     Any
+ 11     Any
+ 12     \1
+ 14     bbb
+ 20   2 Recurse
+ 22     d
+ 24  24 Ket
+ 26     End
+------------------------------------------------------------------
+
+/abc(?C255)de(?C)f/
+Memory allocation (code space): 100
+------------------------------------------------------------------
+  0  22 Bra
+  2     abc
+  8     Callout 255 10 1
+ 12     de
+ 16     Callout 0 16 1
+ 20     f
+ 22  22 Ket
+ 24     End
+------------------------------------------------------------------
+
+/abcde/auto_callout
+Memory allocation (code space): 156
+------------------------------------------------------------------
+  0  36 Bra
+  2     Callout 255 0 1
+  6     a
+  8     Callout 255 1 1
+ 12     b
+ 14     Callout 255 2 1
+ 18     c
+ 20     Callout 255 3 1
+ 24     d
+ 26     Callout 255 4 1
+ 30     e
+ 32     Callout 255 5 0
+ 36  36 Ket
+ 38     End
+------------------------------------------------------------------
+
+/\x{100}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{100}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{1000}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{1000}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{10000}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{10000}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{100000}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{100000}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{10ffff}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{10ffff}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{110000}/utf
+Failed: error 134 at offset 9: character code point value in \x{} or \o{} is too large
+
+/[\x{ff}]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{ff}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[\x{100}]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{100}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x80/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{80}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\xff/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{ff}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{0041}\x{2262}\x{0391}\x{002e}/I,utf
+Memory allocation (code space): 52
+------------------------------------------------------------------
+  0  10 Bra
+  2     A\x{2262}\x{391}.
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = 'A'
+Last code unit = '.'
+Subject length lower bound = 4
+
+/\x{D55c}\x{ad6d}\x{C5B4}/I,utf
+Memory allocation (code space): 44
+------------------------------------------------------------------
+  0   8 Bra
+  2     \x{d55c}\x{ad6d}\x{c5b4}
+  8   8 Ket
+ 10     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \x{d55c}
+Last code unit = \x{c5b4}
+Subject length lower bound = 3
+
+/\x{65e5}\x{672c}\x{8a9e}/I,utf
+Memory allocation (code space): 44
+------------------------------------------------------------------
+  0   8 Bra
+  2     \x{65e5}\x{672c}\x{8a9e}
+  8   8 Ket
+ 10     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \x{65e5}
+Last code unit = \x{8a9e}
+Subject length lower bound = 3
+
+/[\x{100}]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{100}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[Z\x{100}]/utf
+Memory allocation (code space): 76
+------------------------------------------------------------------
+  0  16 Bra
+  2     [Z\x{100}]
+ 16  16 Ket
+ 18     End
+------------------------------------------------------------------
+
+/^[\x{100}\E-\Q\E\x{150}]/utf
+Memory allocation (code space): 52
+------------------------------------------------------------------
+  0  10 Bra
+  2     ^
+  3     [\x{100}-\x{150}]
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E]/utf
+Memory allocation (code space): 52
+------------------------------------------------------------------
+  0  10 Bra
+  2     ^
+  3     [\x{100}-\x{150}]
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E/utf
+Failed: error 106 at offset 13: missing terminating ] for character class
+
+/[\p{L}]/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\p{L}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\p{^L}]/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\P{L}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\P{L}]/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\P{L}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\P{^L}]/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\p{L}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[abc\p{L}\x{0660}]/utf
+Memory allocation (code space): 88
+------------------------------------------------------------------
+  0  19 Bra
+  2     [a-c\p{L}\x{660}]
+ 19  19 Ket
+ 21     End
+------------------------------------------------------------------
+
+/[\p{Nd}]/utf
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\p{Nd}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\p{Nd}+-]+/utf
+Memory allocation (code space): 84
+------------------------------------------------------------------
+  0  18 Bra
+  2     [+\-\p{Nd}]++
+ 18  18 Ket
+ 20     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/i,utf
+Memory allocation (code space): 60
+------------------------------------------------------------------
+  0  12 Bra
+  2  /i A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 12  12 Ket
+ 14     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
+Memory allocation (code space): 60
+------------------------------------------------------------------
+  0  12 Bra
+  2     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 12  12 Ket
+ 14     End
+------------------------------------------------------------------
+
+/[\x{105}-\x{109}]/i,utf
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\x{104}-\x{109}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/( ( (?(1)0|) )*   )/x
+Memory allocation (code space): 104
+------------------------------------------------------------------
+  0  23 Bra
+  2  19 CBra 1
+  5     Brazero
+  6  13 SCBra 2
+  9   6 Cond
+ 11   1 Cond ref
+ 13     0
+ 15   2 Alt
+ 17   8 Ket
+ 19  13 KetRmax
+ 21  19 Ket
+ 23  23 Ket
+ 25     End
+------------------------------------------------------------------
+
+/(  (?(1)0|)*   )/x
+Memory allocation (code space): 84
+------------------------------------------------------------------
+  0  18 Bra
+  2  14 CBra 1
+  5     Brazero
+  6   6 SCond
+  8   1 Cond ref
+ 10     0
+ 12   2 Alt
+ 14   8 KetRmax
+ 16  14 Ket
+ 18  18 Ket
+ 20     End
+------------------------------------------------------------------
+
+/[a]/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     a
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[a]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     a
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[\xaa]/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{aa}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[\xaa]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{aa}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[^a]/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     [^a]
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[^a]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     [^a]
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[^\xaa]/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     [^\x{aa}]
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[^\xaa]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     [^\x{aa}]
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+#pattern -memory
+
+/[^\d]/utf,ucp
+------------------------------------------------------------------
+  0   9 Bra
+  2     [^\p{Nd}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[[:^alpha:][:^cntrl:]]+/utf,ucp
+------------------------------------------------------------------
+  0  13 Bra
+  2     [\P{L}\P{Cc}]++
+ 13  13 Ket
+ 15     End
+------------------------------------------------------------------
+
+/[[:^cntrl:][:^alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  13 Bra
+  2     [\P{Cc}\P{L}]++
+ 13  13 Ket
+ 15     End
+------------------------------------------------------------------
+
+/[[:alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  10 Bra
+  2     [\p{L}]++
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+
+/[[:^alpha:]\S]+/utf,ucp
+------------------------------------------------------------------
+  0  13 Bra
+  2     [\P{L}\P{Xsp}]++
+ 13  13 Ket
+ 15     End
+------------------------------------------------------------------
+
+/abc(d|e)(*THEN)x(123(*THEN)4|567(b|q)(*THEN)xx)/
+------------------------------------------------------------------
+  0  60 Bra
+  2     abc
+  8   5 CBra 1
+ 11     d
+ 13   4 Alt
+ 15     e
+ 17   9 Ket
+ 19     *THEN
+ 20     x
+ 22  12 CBra 2
+ 25     123
+ 31     *THEN
+ 32     4
+ 34  24 Alt
+ 36     567
+ 42   5 CBra 3
+ 45     b
+ 47   4 Alt
+ 49     q
+ 51   9 Ket
+ 53     *THEN
+ 54     xx
+ 58  36 Ket
+ 60  60 Ket
+ 62     End
+------------------------------------------------------------------
+
+/(((a\2)|(a*)\g<-1>))*a?/
+------------------------------------------------------------------
+  0  39 Bra
+  2     Brazero
+  3  32 SCBra 1
+  6  27 Once
+  8  12 CBra 2
+ 11   7 CBra 3
+ 14     a
+ 16     \2
+ 18   7 Ket
+ 20  11 Alt
+ 22   5 CBra 4
+ 25     a*
+ 27   5 Ket
+ 29  22 Recurse
+ 31  23 Ket
+ 33  27 Ket
+ 35  32 KetRmax
+ 37     a?+
+ 39  39 Ket
+ 41     End
+------------------------------------------------------------------
+
+/((?+1)(\1))/
+------------------------------------------------------------------
+  0  20 Bra
+  2  16 Once
+  4  12 CBra 1
+  7   9 Recurse
+  9   5 CBra 2
+ 12     \1
+ 14   5 Ket
+ 16  12 Ket
+ 18  16 Ket
+ 20  20 Ket
+ 22     End
+------------------------------------------------------------------
+
+"(?1)(?#?'){2}(a)"
+------------------------------------------------------------------
+  0  21 Bra
+  2   4 Once
+  4  14 Recurse
+  6   4 Ket
+  8   4 Once
+ 10  14 Recurse
+ 12   4 Ket
+ 14   5 CBra 1
+ 17     a
+ 19   5 Ket
+ 21  21 Ket
+ 23     End
+------------------------------------------------------------------
+
+/.((?2)(?R)|\1|$)()/
+------------------------------------------------------------------
+  0  28 Bra
+  2     Any
+  3  18 Once
+  5   7 CBra 1
+  8  23 Recurse
+ 10   0 Recurse
+ 12   4 Alt
+ 14     \1
+ 16   3 Alt
+ 18     $
+ 19  14 Ket
+ 21  18 Ket
+ 23   3 CBra 2
+ 26   3 Ket
+ 28  28 Ket
+ 30     End
+------------------------------------------------------------------
+
+/.((?3)(?R)()(?2)|\1|$)()/
+------------------------------------------------------------------
+  0  35 Bra
+  2     Any
+  3  25 Once
+  5  14 CBra 1
+  8  30 Recurse
+ 10   0 Recurse
+ 12   3 CBra 2
+ 15   3 Ket
+ 17  12 Recurse
+ 19   4 Alt
+ 21     \1
+ 23   3 Alt
+ 25     $
+ 26  21 Ket
+ 28  25 Ket
+ 30   3 CBra 3
+ 33   3 Ket
+ 35  35 Ket
+ 37     End
+------------------------------------------------------------------
+
+/(?1)()((((((\1++))\x85)+)|))/
+------------------------------------------------------------------
+  0  50 Bra
+  2   4 Recurse
+  4   3 CBra 1
+  7   3 Ket
+  9  39 CBra 2
+ 12  32 CBra 3
+ 15  27 CBra 4
+ 18  22 CBra 5
+ 21  15 CBra 6
+ 24  10 CBra 7
+ 27   5 Once
+ 29     \1+
+ 32   5 Ket
+ 34  10 Ket
+ 36  15 Ket
+ 38     \x{85}
+ 40  22 KetRmax
+ 42  27 Ket
+ 44   2 Alt
+ 46  34 Ket
+ 48  39 Ket
+ 50  50 Ket
+ 52     End
+------------------------------------------------------------------
+
+# Check the absolute limit on nesting (?| etc. This varies with code unit
+# width because the workspace is a different number of bytes. It will fail
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
+/(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
+)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
+/parens_nest_limit=1000,-fullbincode
+
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+Failed: error 186 at offset 979: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+Failed: error 186 at offset 979: regular expression is too complicated
+
+/(?(1)(?1)){8,}+()/debug
+------------------------------------------------------------------
+  0  79 Bra
+  2  70 Once
+  4   6 Cond
+  6   1 Cond ref
+  8  74 Recurse
+ 10   6 Ket
+ 12   6 Cond
+ 14   1 Cond ref
+ 16  74 Recurse
+ 18   6 Ket
+ 20   6 Cond
+ 22   1 Cond ref
+ 24  74 Recurse
+ 26   6 Ket
+ 28   6 Cond
+ 30   1 Cond ref
+ 32  74 Recurse
+ 34   6 Ket
+ 36   6 Cond
+ 38   1 Cond ref
+ 40  74 Recurse
+ 42   6 Ket
+ 44   6 Cond
+ 46   1 Cond ref
+ 48  74 Recurse
+ 50   6 Ket
+ 52   6 Cond
+ 54   1 Cond ref
+ 56  74 Recurse
+ 58   6 Ket
+ 60  10 SBraPos
+ 62   6 SCond
+ 64   1 Cond ref
+ 66  74 Recurse
+ 68   6 Ket
+ 70  10 KetRpos
+ 72  70 Ket
+ 74   3 CBra 1
+ 77   3 Ket
+ 79  79 Ket
+ 81     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: 
+ 1: 
+
+/(?(1)|a(?1)b){2,}+()/debug
+------------------------------------------------------------------
+  0  43 Bra
+  2  34 Once
+  4   4 Cond
+  6   1 Cond ref
+  8   8 Alt
+ 10     a
+ 12  38 Recurse
+ 14     b
+ 16  12 Ket
+ 18  16 SBraPos
+ 20   4 SCond
+ 22   1 Cond ref
+ 24   8 Alt
+ 26     a
+ 28  38 Recurse
+ 30     b
+ 32  12 Ket
+ 34  16 KetRpos
+ 36  34 Ket
+ 38   3 CBra 1
+ 41   3 Ket
+ 43  43 Ket
+ 45     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcde
+No match
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+------------------------------------------------------------------
+  0 133 Bra
+  2  41 CBra 1
+  5   2 Recurse
+  7  88 Recurse
+  9  93 Recurse
+ 11  98 Recurse
+ 13 103 Recurse
+ 15 108 Recurse
+ 17 113 Recurse
+ 19 118 Recurse
+ 21 123 Recurse
+ 23 123 Recurse
+ 25 118 Recurse
+ 27 113 Recurse
+ 29 108 Recurse
+ 31 103 Recurse
+ 33  98 Recurse
+ 35  93 Recurse
+ 37  88 Recurse
+ 39   2 Recurse
+ 41   0 Recurse
+ 43  41 Ket
+ 45  41 SCBra 1
+ 48   2 Recurse
+ 50  88 Recurse
+ 52  93 Recurse
+ 54  98 Recurse
+ 56 103 Recurse
+ 58 108 Recurse
+ 60 113 Recurse
+ 62 118 Recurse
+ 64 123 Recurse
+ 66 123 Recurse
+ 68 118 Recurse
+ 70 113 Recurse
+ 72 108 Recurse
+ 74 103 Recurse
+ 76  98 Recurse
+ 78  93 Recurse
+ 80  88 Recurse
+ 82   2 Recurse
+ 84   0 Recurse
+ 86  41 KetRmax
+ 88   3 CBra 2
+ 91   3 Ket
+ 93   3 CBra 3
+ 96   3 Ket
+ 98   3 CBra 4
+101   3 Ket
+103   3 CBra 5
+106   3 Ket
+108   3 CBra 6
+111   3 Ket
+113   3 CBra 7
+116   3 Ket
+118   3 CBra 8
+121   3 Ket
+123   3 CBra 9
+126   3 Ket
+128   3 CBra 10
+131   3 Ket
+133 133 Ket
+135     End
+------------------------------------------------------------------
+Capturing subpattern count = 10
+May match empty string
+Subject length lower bound = 0
+
+# End of testinput8
diff --git a/testdata/testoutput8-32-4 b/testdata/testoutput8-32-4
new file mode 100644
index 0000000..babd0c7
--- /dev/null
+++ b/testdata/testoutput8-32-4
@@ -0,0 +1,1026 @@
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
+
+#pattern fullbincode,memory
+
+/((?i)b)/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2   5 CBra 1
+  5  /i b
+  7   5 Ket
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/(?s)(.*X|^B)/
+Memory allocation (code space): 76
+------------------------------------------------------------------
+  0  16 Bra
+  2   7 CBra 1
+  5     AllAny*
+  7     X
+  9   5 Alt
+ 11     ^
+ 12     B
+ 14  12 Ket
+ 16  16 Ket
+ 18     End
+------------------------------------------------------------------
+
+/(?s:.*X|^B)/
+Memory allocation (code space): 72
+------------------------------------------------------------------
+  0  15 Bra
+  2   6 Bra
+  4     AllAny*
+  6     X
+  8   5 Alt
+ 10     ^
+ 11     B
+ 13  11 Ket
+ 15  15 Ket
+ 17     End
+------------------------------------------------------------------
+
+/^[[:alnum:]]/
+Memory allocation (code space): 60
+------------------------------------------------------------------
+  0  12 Bra
+  2     ^
+  3     [0-9A-Za-z]
+ 12  12 Ket
+ 14     End
+------------------------------------------------------------------
+
+/#/Ix
+Memory allocation (code space): 20
+------------------------------------------------------------------
+  0   2 Bra
+  2   2 Ket
+  4     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+May match empty string
+Options: extended
+Subject length lower bound = 0
+
+/a#/Ix
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     a
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: extended
+First code unit = 'a'
+Subject length lower bound = 1
+
+/x?+/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     x?+
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/x++/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     x++
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/x{1,3}+/
+Memory allocation (code space): 40
+------------------------------------------------------------------
+  0   7 Bra
+  2     x
+  4     x{0,2}+
+  7   7 Ket
+  9     End
+------------------------------------------------------------------
+
+/(x)*+/
+Memory allocation (code space): 52
+------------------------------------------------------------------
+  0  10 Bra
+  2     Braposzero
+  3   5 CBraPos 1
+  6     x
+  8   5 KetRpos
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+
+/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/
+Memory allocation (code space): 220
+------------------------------------------------------------------
+  0  52 Bra
+  2     ^
+  3  47 CBra 1
+  6   5 CBra 2
+  9     a+
+ 11   5 Ket
+ 13  13 CBra 3
+ 16     [ab]+?
+ 26  13 Ket
+ 28  13 CBra 4
+ 31     [bc]+
+ 41  13 Ket
+ 43   5 CBra 5
+ 46     \w*+
+ 48   5 Ket
+ 50  47 Ket
+ 52  52 Ket
+ 54     End
+------------------------------------------------------------------
+
+"8J\$WE\<\.rX\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 3296
+------------------------------------------------------------------
+  0 821 Bra
+  2     8J$WE<.rX+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+820     \b
+821 821 Ket
+823     End
+------------------------------------------------------------------
+
+"\$\<\.X\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 3256
+------------------------------------------------------------------
+  0 811 Bra
+  2     $<.X+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+810     \b
+811 811 Ket
+813     End
+------------------------------------------------------------------
+
+/(a(?1)b)/
+Memory allocation (code space): 64
+------------------------------------------------------------------
+  0  13 Bra
+  2   9 CBra 1
+  5     a
+  7   2 Recurse
+  9     b
+ 11   9 Ket
+ 13  13 Ket
+ 15     End
+------------------------------------------------------------------
+
+/(a(?1)+b)/
+Memory allocation (code space): 80
+------------------------------------------------------------------
+  0  17 Bra
+  2  13 CBra 1
+  5     a
+  7   4 Once
+  9   2 Recurse
+ 11   4 KetRmax
+ 13     b
+ 15  13 Ket
+ 17  17 Ket
+ 19     End
+------------------------------------------------------------------
+
+/a(?P<name1>b|c)d(?P<longername2>e)/
+Memory allocation (code space): 108
+------------------------------------------------------------------
+  0  24 Bra
+  2     a
+  4   5 CBra 1
+  7     b
+  9   4 Alt
+ 11     c
+ 13   9 Ket
+ 15     d
+ 17   5 CBra 2
+ 20     e
+ 22   5 Ket
+ 24  24 Ket
+ 26     End
+------------------------------------------------------------------
+
+/(?:a(?P<c>c(?P<d>d)))(?P<a>a)/
+Memory allocation (code space): 128
+------------------------------------------------------------------
+  0  29 Bra
+  2  18 Bra
+  4     a
+  6  12 CBra 1
+  9     c
+ 11   5 CBra 2
+ 14     d
+ 16   5 Ket
+ 18  12 Ket
+ 20  18 Ket
+ 22   5 CBra 3
+ 25     a
+ 27   5 Ket
+ 29  29 Ket
+ 31     End
+------------------------------------------------------------------
+
+/(?P<a>a)...(?P=a)bbb(?P>a)d/
+Memory allocation (code space): 108
+------------------------------------------------------------------
+  0  24 Bra
+  2   5 CBra 1
+  5     a
+  7   5 Ket
+  9     Any
+ 10     Any
+ 11     Any
+ 12     \1
+ 14     bbb
+ 20   2 Recurse
+ 22     d
+ 24  24 Ket
+ 26     End
+------------------------------------------------------------------
+
+/abc(?C255)de(?C)f/
+Memory allocation (code space): 100
+------------------------------------------------------------------
+  0  22 Bra
+  2     abc
+  8     Callout 255 10 1
+ 12     de
+ 16     Callout 0 16 1
+ 20     f
+ 22  22 Ket
+ 24     End
+------------------------------------------------------------------
+
+/abcde/auto_callout
+Memory allocation (code space): 156
+------------------------------------------------------------------
+  0  36 Bra
+  2     Callout 255 0 1
+  6     a
+  8     Callout 255 1 1
+ 12     b
+ 14     Callout 255 2 1
+ 18     c
+ 20     Callout 255 3 1
+ 24     d
+ 26     Callout 255 4 1
+ 30     e
+ 32     Callout 255 5 0
+ 36  36 Ket
+ 38     End
+------------------------------------------------------------------
+
+/\x{100}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{100}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{1000}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{1000}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{10000}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{10000}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{100000}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{100000}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{10ffff}/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{10ffff}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{110000}/utf
+Failed: error 134 at offset 9: character code point value in \x{} or \o{} is too large
+
+/[\x{ff}]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{ff}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[\x{100}]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{100}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x80/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{80}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\xff/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{ff}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/\x{0041}\x{2262}\x{0391}\x{002e}/I,utf
+Memory allocation (code space): 52
+------------------------------------------------------------------
+  0  10 Bra
+  2     A\x{2262}\x{391}.
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = 'A'
+Last code unit = '.'
+Subject length lower bound = 4
+
+/\x{D55c}\x{ad6d}\x{C5B4}/I,utf
+Memory allocation (code space): 44
+------------------------------------------------------------------
+  0   8 Bra
+  2     \x{d55c}\x{ad6d}\x{c5b4}
+  8   8 Ket
+ 10     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \x{d55c}
+Last code unit = \x{c5b4}
+Subject length lower bound = 3
+
+/\x{65e5}\x{672c}\x{8a9e}/I,utf
+Memory allocation (code space): 44
+------------------------------------------------------------------
+  0   8 Bra
+  2     \x{65e5}\x{672c}\x{8a9e}
+  8   8 Ket
+ 10     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \x{65e5}
+Last code unit = \x{8a9e}
+Subject length lower bound = 3
+
+/[\x{100}]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{100}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[Z\x{100}]/utf
+Memory allocation (code space): 76
+------------------------------------------------------------------
+  0  16 Bra
+  2     [Z\x{100}]
+ 16  16 Ket
+ 18     End
+------------------------------------------------------------------
+
+/^[\x{100}\E-\Q\E\x{150}]/utf
+Memory allocation (code space): 52
+------------------------------------------------------------------
+  0  10 Bra
+  2     ^
+  3     [\x{100}-\x{150}]
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E]/utf
+Memory allocation (code space): 52
+------------------------------------------------------------------
+  0  10 Bra
+  2     ^
+  3     [\x{100}-\x{150}]
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E/utf
+Failed: error 106 at offset 13: missing terminating ] for character class
+
+/[\p{L}]/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\p{L}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\p{^L}]/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\P{L}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\P{L}]/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\P{L}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\P{^L}]/
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\p{L}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[abc\p{L}\x{0660}]/utf
+Memory allocation (code space): 88
+------------------------------------------------------------------
+  0  19 Bra
+  2     [a-c\p{L}\x{660}]
+ 19  19 Ket
+ 21     End
+------------------------------------------------------------------
+
+/[\p{Nd}]/utf
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\p{Nd}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\p{Nd}+-]+/utf
+Memory allocation (code space): 84
+------------------------------------------------------------------
+  0  18 Bra
+  2     [+\-\p{Nd}]++
+ 18  18 Ket
+ 20     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/i,utf
+Memory allocation (code space): 60
+------------------------------------------------------------------
+  0  12 Bra
+  2  /i A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 12  12 Ket
+ 14     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
+Memory allocation (code space): 60
+------------------------------------------------------------------
+  0  12 Bra
+  2     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 12  12 Ket
+ 14     End
+------------------------------------------------------------------
+
+/[\x{105}-\x{109}]/i,utf
+Memory allocation (code space): 48
+------------------------------------------------------------------
+  0   9 Bra
+  2     [\x{104}-\x{109}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/( ( (?(1)0|) )*   )/x
+Memory allocation (code space): 104
+------------------------------------------------------------------
+  0  23 Bra
+  2  19 CBra 1
+  5     Brazero
+  6  13 SCBra 2
+  9   6 Cond
+ 11   1 Cond ref
+ 13     0
+ 15   2 Alt
+ 17   8 Ket
+ 19  13 KetRmax
+ 21  19 Ket
+ 23  23 Ket
+ 25     End
+------------------------------------------------------------------
+
+/(  (?(1)0|)*   )/x
+Memory allocation (code space): 84
+------------------------------------------------------------------
+  0  18 Bra
+  2  14 CBra 1
+  5     Brazero
+  6   6 SCond
+  8   1 Cond ref
+ 10     0
+ 12   2 Alt
+ 14   8 KetRmax
+ 16  14 Ket
+ 18  18 Ket
+ 20     End
+------------------------------------------------------------------
+
+/[a]/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     a
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[a]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     a
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[\xaa]/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{aa}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[\xaa]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     \x{aa}
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[^a]/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     [^a]
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[^a]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     [^a]
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[^\xaa]/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     [^\x{aa}]
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+/[^\xaa]/utf
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0   4 Bra
+  2     [^\x{aa}]
+  4   4 Ket
+  6     End
+------------------------------------------------------------------
+
+#pattern -memory
+
+/[^\d]/utf,ucp
+------------------------------------------------------------------
+  0   9 Bra
+  2     [^\p{Nd}]
+  9   9 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[[:^alpha:][:^cntrl:]]+/utf,ucp
+------------------------------------------------------------------
+  0  13 Bra
+  2     [\P{L}\P{Cc}]++
+ 13  13 Ket
+ 15     End
+------------------------------------------------------------------
+
+/[[:^cntrl:][:^alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  13 Bra
+  2     [\P{Cc}\P{L}]++
+ 13  13 Ket
+ 15     End
+------------------------------------------------------------------
+
+/[[:alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  10 Bra
+  2     [\p{L}]++
+ 10  10 Ket
+ 12     End
+------------------------------------------------------------------
+
+/[[:^alpha:]\S]+/utf,ucp
+------------------------------------------------------------------
+  0  13 Bra
+  2     [\P{L}\P{Xsp}]++
+ 13  13 Ket
+ 15     End
+------------------------------------------------------------------
+
+/abc(d|e)(*THEN)x(123(*THEN)4|567(b|q)(*THEN)xx)/
+------------------------------------------------------------------
+  0  60 Bra
+  2     abc
+  8   5 CBra 1
+ 11     d
+ 13   4 Alt
+ 15     e
+ 17   9 Ket
+ 19     *THEN
+ 20     x
+ 22  12 CBra 2
+ 25     123
+ 31     *THEN
+ 32     4
+ 34  24 Alt
+ 36     567
+ 42   5 CBra 3
+ 45     b
+ 47   4 Alt
+ 49     q
+ 51   9 Ket
+ 53     *THEN
+ 54     xx
+ 58  36 Ket
+ 60  60 Ket
+ 62     End
+------------------------------------------------------------------
+
+/(((a\2)|(a*)\g<-1>))*a?/
+------------------------------------------------------------------
+  0  39 Bra
+  2     Brazero
+  3  32 SCBra 1
+  6  27 Once
+  8  12 CBra 2
+ 11   7 CBra 3
+ 14     a
+ 16     \2
+ 18   7 Ket
+ 20  11 Alt
+ 22   5 CBra 4
+ 25     a*
+ 27   5 Ket
+ 29  22 Recurse
+ 31  23 Ket
+ 33  27 Ket
+ 35  32 KetRmax
+ 37     a?+
+ 39  39 Ket
+ 41     End
+------------------------------------------------------------------
+
+/((?+1)(\1))/
+------------------------------------------------------------------
+  0  20 Bra
+  2  16 Once
+  4  12 CBra 1
+  7   9 Recurse
+  9   5 CBra 2
+ 12     \1
+ 14   5 Ket
+ 16  12 Ket
+ 18  16 Ket
+ 20  20 Ket
+ 22     End
+------------------------------------------------------------------
+
+"(?1)(?#?'){2}(a)"
+------------------------------------------------------------------
+  0  21 Bra
+  2   4 Once
+  4  14 Recurse
+  6   4 Ket
+  8   4 Once
+ 10  14 Recurse
+ 12   4 Ket
+ 14   5 CBra 1
+ 17     a
+ 19   5 Ket
+ 21  21 Ket
+ 23     End
+------------------------------------------------------------------
+
+/.((?2)(?R)|\1|$)()/
+------------------------------------------------------------------
+  0  28 Bra
+  2     Any
+  3  18 Once
+  5   7 CBra 1
+  8  23 Recurse
+ 10   0 Recurse
+ 12   4 Alt
+ 14     \1
+ 16   3 Alt
+ 18     $
+ 19  14 Ket
+ 21  18 Ket
+ 23   3 CBra 2
+ 26   3 Ket
+ 28  28 Ket
+ 30     End
+------------------------------------------------------------------
+
+/.((?3)(?R)()(?2)|\1|$)()/
+------------------------------------------------------------------
+  0  35 Bra
+  2     Any
+  3  25 Once
+  5  14 CBra 1
+  8  30 Recurse
+ 10   0 Recurse
+ 12   3 CBra 2
+ 15   3 Ket
+ 17  12 Recurse
+ 19   4 Alt
+ 21     \1
+ 23   3 Alt
+ 25     $
+ 26  21 Ket
+ 28  25 Ket
+ 30   3 CBra 3
+ 33   3 Ket
+ 35  35 Ket
+ 37     End
+------------------------------------------------------------------
+
+/(?1)()((((((\1++))\x85)+)|))/
+------------------------------------------------------------------
+  0  50 Bra
+  2   4 Recurse
+  4   3 CBra 1
+  7   3 Ket
+  9  39 CBra 2
+ 12  32 CBra 3
+ 15  27 CBra 4
+ 18  22 CBra 5
+ 21  15 CBra 6
+ 24  10 CBra 7
+ 27   5 Once
+ 29     \1+
+ 32   5 Ket
+ 34  10 Ket
+ 36  15 Ket
+ 38     \x{85}
+ 40  22 KetRmax
+ 42  27 Ket
+ 44   2 Alt
+ 46  34 Ket
+ 48  39 Ket
+ 50  50 Ket
+ 52     End
+------------------------------------------------------------------
+
+# Check the absolute limit on nesting (?| etc. This varies with code unit
+# width because the workspace is a different number of bytes. It will fail
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
+/(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
+)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
+/parens_nest_limit=1000,-fullbincode
+
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+Failed: error 186 at offset 979: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+Failed: error 186 at offset 979: regular expression is too complicated
+
+/(?(1)(?1)){8,}+()/debug
+------------------------------------------------------------------
+  0  79 Bra
+  2  70 Once
+  4   6 Cond
+  6   1 Cond ref
+  8  74 Recurse
+ 10   6 Ket
+ 12   6 Cond
+ 14   1 Cond ref
+ 16  74 Recurse
+ 18   6 Ket
+ 20   6 Cond
+ 22   1 Cond ref
+ 24  74 Recurse
+ 26   6 Ket
+ 28   6 Cond
+ 30   1 Cond ref
+ 32  74 Recurse
+ 34   6 Ket
+ 36   6 Cond
+ 38   1 Cond ref
+ 40  74 Recurse
+ 42   6 Ket
+ 44   6 Cond
+ 46   1 Cond ref
+ 48  74 Recurse
+ 50   6 Ket
+ 52   6 Cond
+ 54   1 Cond ref
+ 56  74 Recurse
+ 58   6 Ket
+ 60  10 SBraPos
+ 62   6 SCond
+ 64   1 Cond ref
+ 66  74 Recurse
+ 68   6 Ket
+ 70  10 KetRpos
+ 72  70 Ket
+ 74   3 CBra 1
+ 77   3 Ket
+ 79  79 Ket
+ 81     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: 
+ 1: 
+
+/(?(1)|a(?1)b){2,}+()/debug
+------------------------------------------------------------------
+  0  43 Bra
+  2  34 Once
+  4   4 Cond
+  6   1 Cond ref
+  8   8 Alt
+ 10     a
+ 12  38 Recurse
+ 14     b
+ 16  12 Ket
+ 18  16 SBraPos
+ 20   4 SCond
+ 22   1 Cond ref
+ 24   8 Alt
+ 26     a
+ 28  38 Recurse
+ 30     b
+ 32  12 Ket
+ 34  16 KetRpos
+ 36  34 Ket
+ 38   3 CBra 1
+ 41   3 Ket
+ 43  43 Ket
+ 45     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcde
+No match
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+------------------------------------------------------------------
+  0 133 Bra
+  2  41 CBra 1
+  5   2 Recurse
+  7  88 Recurse
+  9  93 Recurse
+ 11  98 Recurse
+ 13 103 Recurse
+ 15 108 Recurse
+ 17 113 Recurse
+ 19 118 Recurse
+ 21 123 Recurse
+ 23 123 Recurse
+ 25 118 Recurse
+ 27 113 Recurse
+ 29 108 Recurse
+ 31 103 Recurse
+ 33  98 Recurse
+ 35  93 Recurse
+ 37  88 Recurse
+ 39   2 Recurse
+ 41   0 Recurse
+ 43  41 Ket
+ 45  41 SCBra 1
+ 48   2 Recurse
+ 50  88 Recurse
+ 52  93 Recurse
+ 54  98 Recurse
+ 56 103 Recurse
+ 58 108 Recurse
+ 60 113 Recurse
+ 62 118 Recurse
+ 64 123 Recurse
+ 66 123 Recurse
+ 68 118 Recurse
+ 70 113 Recurse
+ 72 108 Recurse
+ 74 103 Recurse
+ 76  98 Recurse
+ 78  93 Recurse
+ 80  88 Recurse
+ 82   2 Recurse
+ 84   0 Recurse
+ 86  41 KetRmax
+ 88   3 CBra 2
+ 91   3 Ket
+ 93   3 CBra 3
+ 96   3 Ket
+ 98   3 CBra 4
+101   3 Ket
+103   3 CBra 5
+106   3 Ket
+108   3 CBra 6
+111   3 Ket
+113   3 CBra 7
+116   3 Ket
+118   3 CBra 8
+121   3 Ket
+123   3 CBra 9
+126   3 Ket
+128   3 CBra 10
+131   3 Ket
+133 133 Ket
+135     End
+------------------------------------------------------------------
+Capturing subpattern count = 10
+May match empty string
+Subject length lower bound = 0
+
+# End of testinput8
diff --git a/testdata/testoutput8-8 b/testdata/testoutput8-8-2
index a12cc71..6a9aa0a 100644
--- a/testdata/testoutput8-8
+++ b/testdata/testoutput8-8-2
@@ -1,8 +1,11 @@
-# These are a few representative patterns whose lengths and offsets are to be
-# shown when the link size is 2. This is just a doublecheck test to ensure the
-# sizes don't go horribly wrong when something is changed. The pattern contents
-# are all themselves checked in other tests. Unicode, including property
-# support, is required for these tests.
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
 
 #pattern fullbincode,memory
 
@@ -378,7 +381,7 @@ Options: utf
 First code unit = 'A'
 Last code unit = '.'
 Subject length lower bound = 4
-    
+
 /\x{D55c}\x{ad6d}\x{C5B4}/I,utf
 Memory allocation (code space): 19
 ------------------------------------------------------------------
@@ -842,11 +845,185 @@ Memory allocation (code space): 10
 
 # Check the absolute limit on nesting (?| etc. This varies with code unit
 # width because the workspace is a different number of bytes. It will fail
-# in 8-bit and 16-bit but not in 32-bit.
-    
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
 /(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
 )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
 /parens_nest_limit=1000,-fullbincode
 Failed: error 184 at offset 1540: (?| and/or (?J: or (?x: parentheses are too deeply nested
 
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+Failed: error 186 at offset 637: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+Failed: error 186 at offset 637: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+Failed: error 186 at offset 637: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+Failed: error 186 at offset 637: regular expression is too complicated
+
+/(?(1)(?1)){8,}+()/debug
+------------------------------------------------------------------
+  0 119 Bra
+  3 105 Once
+  6   9 Cond
+  9   1 Cond ref
+ 12 111 Recurse
+ 15   9 Ket
+ 18   9 Cond
+ 21   1 Cond ref
+ 24 111 Recurse
+ 27   9 Ket
+ 30   9 Cond
+ 33   1 Cond ref
+ 36 111 Recurse
+ 39   9 Ket
+ 42   9 Cond
+ 45   1 Cond ref
+ 48 111 Recurse
+ 51   9 Ket
+ 54   9 Cond
+ 57   1 Cond ref
+ 60 111 Recurse
+ 63   9 Ket
+ 66   9 Cond
+ 69   1 Cond ref
+ 72 111 Recurse
+ 75   9 Ket
+ 78   9 Cond
+ 81   1 Cond ref
+ 84 111 Recurse
+ 87   9 Ket
+ 90  15 SBraPos
+ 93   9 SCond
+ 96   1 Cond ref
+ 99 111 Recurse
+102   9 Ket
+105  15 KetRpos
+108 105 Ket
+111   5 CBra 1
+116   5 Ket
+119 119 Ket
+122     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: 
+ 1: 
+
+/(?(1)|a(?1)b){2,}+()/debug
+------------------------------------------------------------------
+  0  61 Bra
+  3  47 Once
+  6   6 Cond
+  9   1 Cond ref
+ 12  10 Alt
+ 15     a
+ 17  53 Recurse
+ 20     b
+ 22  16 Ket
+ 25  22 SBraPos
+ 28   6 SCond
+ 31   1 Cond ref
+ 34  10 Alt
+ 37     a
+ 39  53 Recurse
+ 42     b
+ 44  16 Ket
+ 47  22 KetRpos
+ 50  47 Ket
+ 53   5 CBra 1
+ 58   5 Ket
+ 61  61 Ket
+ 64     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcde
+No match
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+------------------------------------------------------------------
+  0 205 Bra
+  3  62 CBra 1
+  8   3 Recurse
+ 11 133 Recurse
+ 14 141 Recurse
+ 17 149 Recurse
+ 20 157 Recurse
+ 23 165 Recurse
+ 26 173 Recurse
+ 29 181 Recurse
+ 32 189 Recurse
+ 35 189 Recurse
+ 38 181 Recurse
+ 41 173 Recurse
+ 44 165 Recurse
+ 47 157 Recurse
+ 50 149 Recurse
+ 53 141 Recurse
+ 56 133 Recurse
+ 59   3 Recurse
+ 62   0 Recurse
+ 65  62 Ket
+ 68  62 SCBra 1
+ 73   3 Recurse
+ 76 133 Recurse
+ 79 141 Recurse
+ 82 149 Recurse
+ 85 157 Recurse
+ 88 165 Recurse
+ 91 173 Recurse
+ 94 181 Recurse
+ 97 189 Recurse
+100 189 Recurse
+103 181 Recurse
+106 173 Recurse
+109 165 Recurse
+112 157 Recurse
+115 149 Recurse
+118 141 Recurse
+121 133 Recurse
+124   3 Recurse
+127   0 Recurse
+130  62 KetRmax
+133   5 CBra 2
+138   5 Ket
+141   5 CBra 3
+146   5 Ket
+149   5 CBra 4
+154   5 Ket
+157   5 CBra 5
+162   5 Ket
+165   5 CBra 6
+170   5 Ket
+173   5 CBra 7
+178   5 Ket
+181   5 CBra 8
+186   5 Ket
+189   5 CBra 9
+194   5 Ket
+197   5 CBra 10
+202   5 Ket
+205 205 Ket
+208     End
+------------------------------------------------------------------
+Capturing subpattern count = 10
+May match empty string
+Subject length lower bound = 0
+
 # End of testinput8
diff --git a/testdata/testoutput8-8-3 b/testdata/testoutput8-8-3
new file mode 100644
index 0000000..2fe1168
--- /dev/null
+++ b/testdata/testoutput8-8-3
@@ -0,0 +1,1027 @@
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
+
+#pattern fullbincode,memory
+
+/((?i)b)/
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  16 Bra
+  4   8 CBra 1
+ 10  /i b
+ 12   8 Ket
+ 16  16 Ket
+ 20     End
+------------------------------------------------------------------
+
+/(?s)(.*X|^B)/
+Memory allocation (code space): 30
+------------------------------------------------------------------
+  0  25 Bra
+  4  10 CBra 1
+ 10     AllAny*
+ 12     X
+ 14   7 Alt
+ 18     ^
+ 19     B
+ 21  17 Ket
+ 25  25 Ket
+ 29     End
+------------------------------------------------------------------
+
+/(?s:.*X|^B)/
+Memory allocation (code space): 28
+------------------------------------------------------------------
+  0  23 Bra
+  4   8 Bra
+  8     AllAny*
+ 10     X
+ 12   7 Alt
+ 16     ^
+ 17     B
+ 19  15 Ket
+ 23  23 Ket
+ 27     End
+------------------------------------------------------------------
+
+/^[[:alnum:]]/
+Memory allocation (code space): 43
+------------------------------------------------------------------
+  0  38 Bra
+  4     ^
+  5     [0-9A-Za-z]
+ 38  38 Ket
+ 42     End
+------------------------------------------------------------------
+
+/#/Ix
+Memory allocation (code space): 9
+------------------------------------------------------------------
+  0   4 Bra
+  4   4 Ket
+  8     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+May match empty string
+Options: extended
+Subject length lower bound = 0
+
+/a#/Ix
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     a
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: extended
+First code unit = 'a'
+Subject length lower bound = 1
+
+/x?+/
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     x?+
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+
+/x++/
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     x++
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+
+/x{1,3}+/
+Memory allocation (code space): 15
+------------------------------------------------------------------
+  0  10 Bra
+  4     x
+  6     x{0,2}+
+ 10  10 Ket
+ 14     End
+------------------------------------------------------------------
+
+/(x)*+/
+Memory allocation (code space): 22
+------------------------------------------------------------------
+  0  17 Bra
+  4     Braposzero
+  5   8 CBraPos 1
+ 11     x
+ 13   8 KetRpos
+ 17  17 Ket
+ 21     End
+------------------------------------------------------------------
+
+/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/
+Memory allocation (code space): 132
+------------------------------------------------------------------
+  0 127 Bra
+  4     ^
+  5 118 CBra 1
+ 11   8 CBra 2
+ 17     a+
+ 19   8 Ket
+ 23  40 CBra 3
+ 29     [ab]+?
+ 63  40 Ket
+ 67  40 CBra 4
+ 73     [bc]+
+107  40 Ket
+111   8 CBra 5
+117     \w*+
+119   8 Ket
+123 118 Ket
+127 127 Ket
+131     End
+------------------------------------------------------------------
+
+"8J\$WE\<\.rX\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 828
+------------------------------------------------------------------
+  0 823 Bra
+  4     8J$WE<.rX+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+822     \b
+823 823 Ket
+827     End
+------------------------------------------------------------------
+
+"\$\<\.X\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 818
+------------------------------------------------------------------
+  0 813 Bra
+  4     $<.X+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+812     \b
+813 813 Ket
+817     End
+------------------------------------------------------------------
+
+/(a(?1)b)/
+Memory allocation (code space): 27
+------------------------------------------------------------------
+  0  22 Bra
+  4  14 CBra 1
+ 10     a
+ 12   4 Recurse
+ 16     b
+ 18  14 Ket
+ 22  22 Ket
+ 26     End
+------------------------------------------------------------------
+
+/(a(?1)+b)/
+Memory allocation (code space): 35
+------------------------------------------------------------------
+  0  30 Bra
+  4  22 CBra 1
+ 10     a
+ 12   8 Once
+ 16   4 Recurse
+ 20   8 KetRmax
+ 24     b
+ 26  22 Ket
+ 30  30 Ket
+ 34     End
+------------------------------------------------------------------
+
+/a(?P<name1>b|c)d(?P<longername2>e)/
+Memory allocation (code space): 43
+------------------------------------------------------------------
+  0  38 Bra
+  4     a
+  6   8 CBra 1
+ 12     b
+ 14   6 Alt
+ 18     c
+ 20  14 Ket
+ 24     d
+ 26   8 CBra 2
+ 32     e
+ 34   8 Ket
+ 38  38 Ket
+ 42     End
+------------------------------------------------------------------
+
+/(?:a(?P<c>c(?P<d>d)))(?P<a>a)/
+Memory allocation (code space): 55
+------------------------------------------------------------------
+  0  50 Bra
+  4  30 Bra
+  8     a
+ 10  20 CBra 1
+ 16     c
+ 18   8 CBra 2
+ 24     d
+ 26   8 Ket
+ 30  20 Ket
+ 34  30 Ket
+ 38   8 CBra 3
+ 44     a
+ 46   8 Ket
+ 50  50 Ket
+ 54     End
+------------------------------------------------------------------
+
+/(?P<a>a)...(?P=a)bbb(?P>a)d/
+Memory allocation (code space): 39
+------------------------------------------------------------------
+  0  34 Bra
+  4   8 CBra 1
+ 10     a
+ 12   8 Ket
+ 16     Any
+ 17     Any
+ 18     Any
+ 19     \1
+ 22     bbb
+ 28   4 Recurse
+ 32     d
+ 34  34 Ket
+ 38     End
+------------------------------------------------------------------
+
+/abc(?C255)de(?C)f/
+Memory allocation (code space): 37
+------------------------------------------------------------------
+  0  32 Bra
+  4     abc
+ 10     Callout 255 10 1
+ 18     de
+ 22     Callout 0 16 1
+ 30     f
+ 32  32 Ket
+ 36     End
+------------------------------------------------------------------
+
+/abcde/auto_callout
+Memory allocation (code space): 67
+------------------------------------------------------------------
+  0  62 Bra
+  4     Callout 255 0 1
+ 12     a
+ 14     Callout 255 1 1
+ 22     b
+ 24     Callout 255 2 1
+ 32     c
+ 34     Callout 255 3 1
+ 42     d
+ 44     Callout 255 4 1
+ 52     e
+ 54     Callout 255 5 0
+ 62  62 Ket
+ 66     End
+------------------------------------------------------------------
+
+/\x{100}/utf
+Memory allocation (code space): 12
+------------------------------------------------------------------
+  0   7 Bra
+  4     \x{100}
+  7   7 Ket
+ 11     End
+------------------------------------------------------------------
+
+/\x{1000}/utf
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   8 Bra
+  4     \x{1000}
+  8   8 Ket
+ 12     End
+------------------------------------------------------------------
+
+/\x{10000}/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   9 Bra
+  4     \x{10000}
+  9   9 Ket
+ 13     End
+------------------------------------------------------------------
+
+/\x{100000}/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   9 Bra
+  4     \x{100000}
+  9   9 Ket
+ 13     End
+------------------------------------------------------------------
+
+/\x{10ffff}/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   9 Bra
+  4     \x{10ffff}
+  9   9 Ket
+ 13     End
+------------------------------------------------------------------
+
+/\x{110000}/utf
+Failed: error 134 at offset 9: character code point value in \x{} or \o{} is too large
+
+/[\x{ff}]/utf
+Memory allocation (code space): 12
+------------------------------------------------------------------
+  0   7 Bra
+  4     \x{ff}
+  7   7 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[\x{100}]/utf
+Memory allocation (code space): 12
+------------------------------------------------------------------
+  0   7 Bra
+  4     \x{100}
+  7   7 Ket
+ 11     End
+------------------------------------------------------------------
+
+/\x80/utf
+Memory allocation (code space): 12
+------------------------------------------------------------------
+  0   7 Bra
+  4     \x{80}
+  7   7 Ket
+ 11     End
+------------------------------------------------------------------
+
+/\xff/utf
+Memory allocation (code space): 12
+------------------------------------------------------------------
+  0   7 Bra
+  4     \x{ff}
+  7   7 Ket
+ 11     End
+------------------------------------------------------------------
+
+/\x{0041}\x{2262}\x{0391}\x{002e}/I,utf
+Memory allocation (code space): 20
+------------------------------------------------------------------
+  0  15 Bra
+  4     A\x{2262}\x{391}.
+ 15  15 Ket
+ 19     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = 'A'
+Last code unit = '.'
+Subject length lower bound = 4
+
+/\x{D55c}\x{ad6d}\x{C5B4}/I,utf
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  16 Bra
+  4     \x{d55c}\x{ad6d}\x{c5b4}
+ 16  16 Ket
+ 20     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \xed
+Last code unit = \xb4
+Subject length lower bound = 3
+
+/\x{65e5}\x{672c}\x{8a9e}/I,utf
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  16 Bra
+  4     \x{65e5}\x{672c}\x{8a9e}
+ 16  16 Ket
+ 20     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \xe6
+Last code unit = \x9e
+Subject length lower bound = 3
+
+/[\x{100}]/utf
+Memory allocation (code space): 12
+------------------------------------------------------------------
+  0   7 Bra
+  4     \x{100}
+  7   7 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[Z\x{100}]/utf
+Memory allocation (code space): 50
+------------------------------------------------------------------
+  0  45 Bra
+  4     [Z\x{100}]
+ 45  45 Ket
+ 49     End
+------------------------------------------------------------------
+
+/^[\x{100}\E-\Q\E\x{150}]/utf
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  16 Bra
+  4     ^
+  5     [\x{100}-\x{150}]
+ 16  16 Ket
+ 20     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E]/utf
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  16 Bra
+  4     ^
+  5     [\x{100}-\x{150}]
+ 16  16 Ket
+ 20     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E/utf
+Failed: error 106 at offset 15: missing terminating ] for character class
+
+/[\p{L}]/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0  13 Bra
+  4     [\p{L}]
+ 13  13 Ket
+ 17     End
+------------------------------------------------------------------
+
+/[\p{^L}]/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0  13 Bra
+  4     [\P{L}]
+ 13  13 Ket
+ 17     End
+------------------------------------------------------------------
+
+/[\P{L}]/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0  13 Bra
+  4     [\P{L}]
+ 13  13 Ket
+ 17     End
+------------------------------------------------------------------
+
+/[\P{^L}]/
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0  13 Bra
+  4     [\p{L}]
+ 13  13 Ket
+ 17     End
+------------------------------------------------------------------
+
+/[abc\p{L}\x{0660}]/utf
+Memory allocation (code space): 53
+------------------------------------------------------------------
+  0  48 Bra
+  4     [a-c\p{L}\x{660}]
+ 48  48 Ket
+ 52     End
+------------------------------------------------------------------
+
+/[\p{Nd}]/utf
+Memory allocation (code space): 18
+------------------------------------------------------------------
+  0  13 Bra
+  4     [\p{Nd}]
+ 13  13 Ket
+ 17     End
+------------------------------------------------------------------
+
+/[\p{Nd}+-]+/utf
+Memory allocation (code space): 51
+------------------------------------------------------------------
+  0  46 Bra
+  4     [+\-\p{Nd}]++
+ 46  46 Ket
+ 50     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/i,utf
+Memory allocation (code space): 27
+------------------------------------------------------------------
+  0  22 Bra
+  4  /i A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 22  22 Ket
+ 26     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
+Memory allocation (code space): 27
+------------------------------------------------------------------
+  0  22 Bra
+  4     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 22  22 Ket
+ 26     End
+------------------------------------------------------------------
+
+/[\x{105}-\x{109}]/i,utf
+Memory allocation (code space): 20
+------------------------------------------------------------------
+  0  15 Bra
+  4     [\x{104}-\x{109}]
+ 15  15 Ket
+ 19     End
+------------------------------------------------------------------
+
+/( ( (?(1)0|) )*   )/x
+Memory allocation (code space): 47
+------------------------------------------------------------------
+  0  42 Bra
+  4  34 CBra 1
+ 10     Brazero
+ 11  23 SCBra 2
+ 17   9 Cond
+ 21   1 Cond ref
+ 24     0
+ 26   4 Alt
+ 30  13 Ket
+ 34  23 KetRmax
+ 38  34 Ket
+ 42  42 Ket
+ 46     End
+------------------------------------------------------------------
+
+/(  (?(1)0|)*   )/x
+Memory allocation (code space): 37
+------------------------------------------------------------------
+  0  32 Bra
+  4  24 CBra 1
+ 10     Brazero
+ 11   9 SCond
+ 15   1 Cond ref
+ 18     0
+ 20   4 Alt
+ 24  13 KetRmax
+ 28  24 Ket
+ 32  32 Ket
+ 36     End
+------------------------------------------------------------------
+
+/[a]/
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     a
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+
+/[a]/utf
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     a
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+
+/[\xaa]/
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     \x{aa}
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+
+/[\xaa]/utf
+Memory allocation (code space): 12
+------------------------------------------------------------------
+  0   7 Bra
+  4     \x{aa}
+  7   7 Ket
+ 11     End
+------------------------------------------------------------------
+
+/[^a]/
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     [^a]
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+
+/[^a]/utf
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     [^a]
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+
+/[^\xaa]/
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   6 Bra
+  4     [^\x{aa}]
+  6   6 Ket
+ 10     End
+------------------------------------------------------------------
+
+/[^\xaa]/utf
+Memory allocation (code space): 12
+------------------------------------------------------------------
+  0   7 Bra
+  4     [^\x{aa}]
+  7   7 Ket
+ 11     End
+------------------------------------------------------------------
+
+#pattern -memory
+
+/[^\d]/utf,ucp
+------------------------------------------------------------------
+  0  13 Bra
+  4     [^\p{Nd}]
+ 13  13 Ket
+ 17     End
+------------------------------------------------------------------
+
+/[[:^alpha:][:^cntrl:]]+/utf,ucp
+------------------------------------------------------------------
+  0  17 Bra
+  4     [\P{L}\P{Cc}]++
+ 17  17 Ket
+ 21     End
+------------------------------------------------------------------
+
+/[[:^cntrl:][:^alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  17 Bra
+  4     [\P{Cc}\P{L}]++
+ 17  17 Ket
+ 21     End
+------------------------------------------------------------------
+
+/[[:alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  14 Bra
+  4     [\p{L}]++
+ 14  14 Ket
+ 18     End
+------------------------------------------------------------------
+
+/[[:^alpha:]\S]+/utf,ucp
+------------------------------------------------------------------
+  0  17 Bra
+  4     [\P{L}\P{Xsp}]++
+ 17  17 Ket
+ 21     End
+------------------------------------------------------------------
+
+/abc(d|e)(*THEN)x(123(*THEN)4|567(b|q)(*THEN)xx)/
+------------------------------------------------------------------
+  0  83 Bra
+  4     abc
+ 10   8 CBra 1
+ 16     d
+ 18   6 Alt
+ 22     e
+ 24  14 Ket
+ 28     *THEN
+ 29     x
+ 31  15 CBra 2
+ 37     123
+ 43     *THEN
+ 44     4
+ 46  33 Alt
+ 50     567
+ 56   8 CBra 3
+ 62     b
+ 64   6 Alt
+ 68     q
+ 70  14 Ket
+ 74     *THEN
+ 75     xx
+ 79  48 Ket
+ 83  83 Ket
+ 87     End
+------------------------------------------------------------------
+
+/(((a\2)|(a*)\g<-1>))*a?/
+------------------------------------------------------------------
+  0  70 Bra
+  4     Brazero
+  5  59 SCBra 1
+ 11  49 Once
+ 15  21 CBra 2
+ 21  11 CBra 3
+ 27     a
+ 29     \2
+ 32  11 Ket
+ 36  20 Alt
+ 40   8 CBra 4
+ 46     a*
+ 48   8 Ket
+ 52  40 Recurse
+ 56  41 Ket
+ 60  49 Ket
+ 64  59 KetRmax
+ 68     a?+
+ 70  70 Ket
+ 74     End
+------------------------------------------------------------------
+
+/((?+1)(\1))/
+------------------------------------------------------------------
+  0  39 Bra
+  4  31 Once
+  8  23 CBra 1
+ 14  18 Recurse
+ 18   9 CBra 2
+ 24     \1
+ 27   9 Ket
+ 31  23 Ket
+ 35  31 Ket
+ 39  39 Ket
+ 43     End
+------------------------------------------------------------------
+
+"(?1)(?#?'){2}(a)"
+------------------------------------------------------------------
+  0  40 Bra
+  4   8 Once
+  8  28 Recurse
+ 12   8 Ket
+ 16   8 Once
+ 20  28 Recurse
+ 24   8 Ket
+ 28   8 CBra 1
+ 34     a
+ 36   8 Ket
+ 40  40 Ket
+ 44     End
+------------------------------------------------------------------
+
+/.((?2)(?R)|\1|$)()/
+------------------------------------------------------------------
+  0  53 Bra
+  4     Any
+  5  34 Once
+  9  14 CBra 1
+ 15  43 Recurse
+ 19   0 Recurse
+ 23   7 Alt
+ 27     \1
+ 30   5 Alt
+ 34     $
+ 35  26 Ket
+ 39  34 Ket
+ 43   6 CBra 2
+ 49   6 Ket
+ 53  53 Ket
+ 57     End
+------------------------------------------------------------------
+
+/.((?3)(?R)()(?2)|\1|$)()/
+------------------------------------------------------------------
+  0  67 Bra
+  4     Any
+  5  48 Once
+  9  28 CBra 1
+ 15  57 Recurse
+ 19   0 Recurse
+ 23   6 CBra 2
+ 29   6 Ket
+ 33  23 Recurse
+ 37   7 Alt
+ 41     \1
+ 44   5 Alt
+ 48     $
+ 49  40 Ket
+ 53  48 Ket
+ 57   6 CBra 3
+ 63   6 Ket
+ 67  67 Ket
+ 71     End
+------------------------------------------------------------------
+
+/(?1)()((((((\1++))\x85)+)|))/
+------------------------------------------------------------------
+  0  96 Bra
+  4   8 Recurse
+  8   6 CBra 1
+ 14   6 Ket
+ 18  74 CBra 2
+ 24  60 CBra 3
+ 30  50 CBra 4
+ 36  40 CBra 5
+ 42  28 CBra 6
+ 48  18 CBra 7
+ 54   8 Once
+ 58     \1+
+ 62   8 Ket
+ 66  18 Ket
+ 70  28 Ket
+ 74     \x{85}
+ 76  40 KetRmax
+ 80  50 Ket
+ 84   4 Alt
+ 88  64 Ket
+ 92  74 Ket
+ 96  96 Ket
+100     End
+------------------------------------------------------------------
+
+# Check the absolute limit on nesting (?| etc. This varies with code unit
+# width because the workspace is a different number of bytes. It will fail
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
+/(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
+)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
+/parens_nest_limit=1000,-fullbincode
+
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+Failed: error 186 at offset 936: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+Failed: error 186 at offset 936: regular expression is too complicated
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+Failed: error 186 at offset 936: regular expression is too complicated
+
+/(?(1)(?1)){8,}+()/debug
+------------------------------------------------------------------
+  0 150 Bra
+  4 132 Once
+  8  11 Cond
+ 12   1 Cond ref
+ 15 140 Recurse
+ 19  11 Ket
+ 23  11 Cond
+ 27   1 Cond ref
+ 30 140 Recurse
+ 34  11 Ket
+ 38  11 Cond
+ 42   1 Cond ref
+ 45 140 Recurse
+ 49  11 Ket
+ 53  11 Cond
+ 57   1 Cond ref
+ 60 140 Recurse
+ 64  11 Ket
+ 68  11 Cond
+ 72   1 Cond ref
+ 75 140 Recurse
+ 79  11 Ket
+ 83  11 Cond
+ 87   1 Cond ref
+ 90 140 Recurse
+ 94  11 Ket
+ 98  11 Cond
+102   1 Cond ref
+105 140 Recurse
+109  11 Ket
+113  19 SBraPos
+117  11 SCond
+121   1 Cond ref
+124 140 Recurse
+128  11 Ket
+132  19 KetRpos
+136 132 Ket
+140   6 CBra 1
+146   6 Ket
+150 150 Ket
+154     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: 
+ 1: 
+
+/(?(1)|a(?1)b){2,}+()/debug
+------------------------------------------------------------------
+  0  76 Bra
+  4  58 Once
+  8   7 Cond
+ 12   1 Cond ref
+ 15  12 Alt
+ 19     a
+ 21  66 Recurse
+ 25     b
+ 27  19 Ket
+ 31  27 SBraPos
+ 35   7 SCond
+ 39   1 Cond ref
+ 42  12 Alt
+ 46     a
+ 48  66 Recurse
+ 52     b
+ 54  19 Ket
+ 58  27 KetRpos
+ 62  58 Ket
+ 66   6 CBra 1
+ 72   6 Ket
+ 76  76 Ket
+ 80     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcde
+No match
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+------------------------------------------------------------------
+  0 266 Bra
+  4  82 CBra 1
+ 10   4 Recurse
+ 14 176 Recurse
+ 18 186 Recurse
+ 22 196 Recurse
+ 26 206 Recurse
+ 30 216 Recurse
+ 34 226 Recurse
+ 38 236 Recurse
+ 42 246 Recurse
+ 46 246 Recurse
+ 50 236 Recurse
+ 54 226 Recurse
+ 58 216 Recurse
+ 62 206 Recurse
+ 66 196 Recurse
+ 70 186 Recurse
+ 74 176 Recurse
+ 78   4 Recurse
+ 82   0 Recurse
+ 86  82 Ket
+ 90  82 SCBra 1
+ 96   4 Recurse
+100 176 Recurse
+104 186 Recurse
+108 196 Recurse
+112 206 Recurse
+116 216 Recurse
+120 226 Recurse
+124 236 Recurse
+128 246 Recurse
+132 246 Recurse
+136 236 Recurse
+140 226 Recurse
+144 216 Recurse
+148 206 Recurse
+152 196 Recurse
+156 186 Recurse
+160 176 Recurse
+164   4 Recurse
+168   0 Recurse
+172  82 KetRmax
+176   6 CBra 2
+182   6 Ket
+186   6 CBra 3
+192   6 Ket
+196   6 CBra 4
+202   6 Ket
+206   6 CBra 5
+212   6 Ket
+216   6 CBra 6
+222   6 Ket
+226   6 CBra 7
+232   6 Ket
+236   6 CBra 8
+242   6 Ket
+246   6 CBra 9
+252   6 Ket
+256   6 CBra 10
+262   6 Ket
+266 266 Ket
+270     End
+------------------------------------------------------------------
+Capturing subpattern count = 10
+May match empty string
+Subject length lower bound = 0
+
+# End of testinput8
diff --git a/testdata/testoutput8-8-4 b/testdata/testoutput8-8-4
new file mode 100644
index 0000000..91993b2
--- /dev/null
+++ b/testdata/testoutput8-8-4
@@ -0,0 +1,1025 @@
+# There are two sorts of patterns in this test. A number of them are
+# representative patterns whose lengths and offsets are checked. This is just a
+# doublecheck test to ensure the sizes don't go horribly wrong when something
+# is changed. The operation of these patterns is checked in other tests.
+#
+# This file also contains tests whose output varies with code unit size and/or
+# link size. Unicode support is required for these tests. There are separate
+# output files for each code unit size and link size.
+
+#pattern fullbincode,memory
+
+/((?i)b)/
+Memory allocation (code space): 25
+------------------------------------------------------------------
+  0  19 Bra
+  5   9 CBra 1
+ 12  /i b
+ 14   9 Ket
+ 19  19 Ket
+ 24     End
+------------------------------------------------------------------
+
+/(?s)(.*X|^B)/
+Memory allocation (code space): 35
+------------------------------------------------------------------
+  0  29 Bra
+  5  11 CBra 1
+ 12     AllAny*
+ 14     X
+ 16   8 Alt
+ 21     ^
+ 22     B
+ 24  19 Ket
+ 29  29 Ket
+ 34     End
+------------------------------------------------------------------
+
+/(?s:.*X|^B)/
+Memory allocation (code space): 33
+------------------------------------------------------------------
+  0  27 Bra
+  5   9 Bra
+ 10     AllAny*
+ 12     X
+ 14   8 Alt
+ 19     ^
+ 20     B
+ 22  17 Ket
+ 27  27 Ket
+ 32     End
+------------------------------------------------------------------
+
+/^[[:alnum:]]/
+Memory allocation (code space): 45
+------------------------------------------------------------------
+  0  39 Bra
+  5     ^
+  6     [0-9A-Za-z]
+ 39  39 Ket
+ 44     End
+------------------------------------------------------------------
+
+/#/Ix
+Memory allocation (code space): 11
+------------------------------------------------------------------
+  0   5 Bra
+  5   5 Ket
+ 10     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+May match empty string
+Options: extended
+Subject length lower bound = 0
+
+/a#/Ix
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     a
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: extended
+First code unit = 'a'
+Subject length lower bound = 1
+
+/x?+/
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     x?+
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+
+/x++/
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     x++
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+
+/x{1,3}+/
+Memory allocation (code space): 17
+------------------------------------------------------------------
+  0  11 Bra
+  5     x
+  7     x{0,2}+
+ 11  11 Ket
+ 16     End
+------------------------------------------------------------------
+
+/(x)*+/
+Memory allocation (code space): 26
+------------------------------------------------------------------
+  0  20 Bra
+  5     Braposzero
+  6   9 CBraPos 1
+ 13     x
+ 15   9 KetRpos
+ 20  20 Ket
+ 25     End
+------------------------------------------------------------------
+
+/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/
+Memory allocation (code space): 144
+------------------------------------------------------------------
+  0 138 Bra
+  5     ^
+  6 127 CBra 1
+ 13   9 CBra 2
+ 20     a+
+ 22   9 Ket
+ 27  41 CBra 3
+ 34     [ab]+?
+ 68  41 Ket
+ 73  41 CBra 4
+ 80     [bc]+
+114  41 Ket
+119   9 CBra 5
+126     \w*+
+128   9 Ket
+133 127 Ket
+138 138 Ket
+143     End
+------------------------------------------------------------------
+
+"8J\$WE\<\.rX\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 830
+------------------------------------------------------------------
+  0 824 Bra
+  5     8J$WE<.rX+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+823     \b
+824 824 Ket
+829     End
+------------------------------------------------------------------
+
+"\$\<\.X\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b"
+Memory allocation (code space): 820
+------------------------------------------------------------------
+  0 814 Bra
+  5     $<.X+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$M^Mss_U/]&LK9[5vQub^w[KDD<EjmhUZ?.akp2dF>qmj;2}YWFdYx.Ap]hjCPTP(n28k+3;o&WXqs/gOXdr$:r'do0;b4c(f_Gr="\4)[01T7ajQJvL$W~mL_sS/4h:x*[ZN=KLs&L5zX//>it,o:aU(;Z>pW&T7oP'2K^E:x9'c[%z-,64JQ5AeH_G#KijUKghQw^\vea3a?kka_G$8#`*kynsxzBLru']k_[7FrVx}^=$blx>s-N%j;D*aZDnsw:YKZ%Q.Kne9#hP?+b3(SOvL,^;&u5@?5C5Bhb=m-vEh_L15Jl]U)0RP6{q%L^_z5E'Dw6X
+813     \b
+814 814 Ket
+819     End
+------------------------------------------------------------------
+
+/(a(?1)b)/
+Memory allocation (code space): 32
+------------------------------------------------------------------
+  0  26 Bra
+  5  16 CBra 1
+ 12     a
+ 14   5 Recurse
+ 19     b
+ 21  16 Ket
+ 26  26 Ket
+ 31     End
+------------------------------------------------------------------
+
+/(a(?1)+b)/
+Memory allocation (code space): 42
+------------------------------------------------------------------
+  0  36 Bra
+  5  26 CBra 1
+ 12     a
+ 14  10 Once
+ 19   5 Recurse
+ 24  10 KetRmax
+ 29     b
+ 31  26 Ket
+ 36  36 Ket
+ 41     End
+------------------------------------------------------------------
+
+/a(?P<name1>b|c)d(?P<longername2>e)/
+Memory allocation (code space): 50
+------------------------------------------------------------------
+  0  44 Bra
+  5     a
+  7   9 CBra 1
+ 14     b
+ 16   7 Alt
+ 21     c
+ 23  16 Ket
+ 28     d
+ 30   9 CBra 2
+ 37     e
+ 39   9 Ket
+ 44  44 Ket
+ 49     End
+------------------------------------------------------------------
+
+/(?:a(?P<c>c(?P<d>d)))(?P<a>a)/
+Memory allocation (code space): 65
+------------------------------------------------------------------
+  0  59 Bra
+  5  35 Bra
+ 10     a
+ 12  23 CBra 1
+ 19     c
+ 21   9 CBra 2
+ 28     d
+ 30   9 Ket
+ 35  23 Ket
+ 40  35 Ket
+ 45   9 CBra 3
+ 52     a
+ 54   9 Ket
+ 59  59 Ket
+ 64     End
+------------------------------------------------------------------
+
+/(?P<a>a)...(?P=a)bbb(?P>a)d/
+Memory allocation (code space): 44
+------------------------------------------------------------------
+  0  38 Bra
+  5   9 CBra 1
+ 12     a
+ 14   9 Ket
+ 19     Any
+ 20     Any
+ 21     Any
+ 22     \1
+ 25     bbb
+ 31   5 Recurse
+ 36     d
+ 38  38 Ket
+ 43     End
+------------------------------------------------------------------
+
+/abc(?C255)de(?C)f/
+Memory allocation (code space): 43
+------------------------------------------------------------------
+  0  37 Bra
+  5     abc
+ 11     Callout 255 10 1
+ 21     de
+ 25     Callout 0 16 1
+ 35     f
+ 37  37 Ket
+ 42     End
+------------------------------------------------------------------
+
+/abcde/auto_callout
+Memory allocation (code space): 81
+------------------------------------------------------------------
+  0  75 Bra
+  5     Callout 255 0 1
+ 15     a
+ 17     Callout 255 1 1
+ 27     b
+ 29     Callout 255 2 1
+ 39     c
+ 41     Callout 255 3 1
+ 51     d
+ 53     Callout 255 4 1
+ 63     e
+ 65     Callout 255 5 0
+ 75  75 Ket
+ 80     End
+------------------------------------------------------------------
+
+/\x{100}/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   8 Bra
+  5     \x{100}
+  8   8 Ket
+ 13     End
+------------------------------------------------------------------
+
+/\x{1000}/utf
+Memory allocation (code space): 15
+------------------------------------------------------------------
+  0   9 Bra
+  5     \x{1000}
+  9   9 Ket
+ 14     End
+------------------------------------------------------------------
+
+/\x{10000}/utf
+Memory allocation (code space): 16
+------------------------------------------------------------------
+  0  10 Bra
+  5     \x{10000}
+ 10  10 Ket
+ 15     End
+------------------------------------------------------------------
+
+/\x{100000}/utf
+Memory allocation (code space): 16
+------------------------------------------------------------------
+  0  10 Bra
+  5     \x{100000}
+ 10  10 Ket
+ 15     End
+------------------------------------------------------------------
+
+/\x{10ffff}/utf
+Memory allocation (code space): 16
+------------------------------------------------------------------
+  0  10 Bra
+  5     \x{10ffff}
+ 10  10 Ket
+ 15     End
+------------------------------------------------------------------
+
+/\x{110000}/utf
+Failed: error 134 at offset 9: character code point value in \x{} or \o{} is too large
+
+/[\x{ff}]/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   8 Bra
+  5     \x{ff}
+  8   8 Ket
+ 13     End
+------------------------------------------------------------------
+
+/[\x{100}]/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   8 Bra
+  5     \x{100}
+  8   8 Ket
+ 13     End
+------------------------------------------------------------------
+
+/\x80/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   8 Bra
+  5     \x{80}
+  8   8 Ket
+ 13     End
+------------------------------------------------------------------
+
+/\xff/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   8 Bra
+  5     \x{ff}
+  8   8 Ket
+ 13     End
+------------------------------------------------------------------
+
+/\x{0041}\x{2262}\x{0391}\x{002e}/I,utf
+Memory allocation (code space): 22
+------------------------------------------------------------------
+  0  16 Bra
+  5     A\x{2262}\x{391}.
+ 16  16 Ket
+ 21     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = 'A'
+Last code unit = '.'
+Subject length lower bound = 4
+
+/\x{D55c}\x{ad6d}\x{C5B4}/I,utf
+Memory allocation (code space): 23
+------------------------------------------------------------------
+  0  17 Bra
+  5     \x{d55c}\x{ad6d}\x{c5b4}
+ 17  17 Ket
+ 22     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \xed
+Last code unit = \xb4
+Subject length lower bound = 3
+
+/\x{65e5}\x{672c}\x{8a9e}/I,utf
+Memory allocation (code space): 23
+------------------------------------------------------------------
+  0  17 Bra
+  5     \x{65e5}\x{672c}\x{8a9e}
+ 17  17 Ket
+ 22     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: utf
+First code unit = \xe6
+Last code unit = \x9e
+Subject length lower bound = 3
+
+/[\x{100}]/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   8 Bra
+  5     \x{100}
+  8   8 Ket
+ 13     End
+------------------------------------------------------------------
+
+/[Z\x{100}]/utf
+Memory allocation (code space): 53
+------------------------------------------------------------------
+  0  47 Bra
+  5     [Z\x{100}]
+ 47  47 Ket
+ 52     End
+------------------------------------------------------------------
+
+/^[\x{100}\E-\Q\E\x{150}]/utf
+Memory allocation (code space): 24
+------------------------------------------------------------------
+  0  18 Bra
+  5     ^
+  6     [\x{100}-\x{150}]
+ 18  18 Ket
+ 23     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E]/utf
+Memory allocation (code space): 24
+------------------------------------------------------------------
+  0  18 Bra
+  5     ^
+  6     [\x{100}-\x{150}]
+ 18  18 Ket
+ 23     End
+------------------------------------------------------------------
+
+/^[\QĀ\E-\QŐ\E/utf
+Failed: error 106 at offset 15: missing terminating ] for character class
+
+/[\p{L}]/
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  15 Bra
+  5     [\p{L}]
+ 15  15 Ket
+ 20     End
+------------------------------------------------------------------
+
+/[\p{^L}]/
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  15 Bra
+  5     [\P{L}]
+ 15  15 Ket
+ 20     End
+------------------------------------------------------------------
+
+/[\P{L}]/
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  15 Bra
+  5     [\P{L}]
+ 15  15 Ket
+ 20     End
+------------------------------------------------------------------
+
+/[\P{^L}]/
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  15 Bra
+  5     [\p{L}]
+ 15  15 Ket
+ 20     End
+------------------------------------------------------------------
+
+/[abc\p{L}\x{0660}]/utf
+Memory allocation (code space): 56
+------------------------------------------------------------------
+  0  50 Bra
+  5     [a-c\p{L}\x{660}]
+ 50  50 Ket
+ 55     End
+------------------------------------------------------------------
+
+/[\p{Nd}]/utf
+Memory allocation (code space): 21
+------------------------------------------------------------------
+  0  15 Bra
+  5     [\p{Nd}]
+ 15  15 Ket
+ 20     End
+------------------------------------------------------------------
+
+/[\p{Nd}+-]+/utf
+Memory allocation (code space): 54
+------------------------------------------------------------------
+  0  48 Bra
+  5     [+\-\p{Nd}]++
+ 48  48 Ket
+ 53     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/i,utf
+Memory allocation (code space): 29
+------------------------------------------------------------------
+  0  23 Bra
+  5  /i A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 23  23 Ket
+ 28     End
+------------------------------------------------------------------
+
+/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/utf
+Memory allocation (code space): 29
+------------------------------------------------------------------
+  0  23 Bra
+  5     A\x{391}\x{10427}\x{ff3a}\x{1fb0}
+ 23  23 Ket
+ 28     End
+------------------------------------------------------------------
+
+/[\x{105}-\x{109}]/i,utf
+Memory allocation (code space): 23
+------------------------------------------------------------------
+  0  17 Bra
+  5     [\x{104}-\x{109}]
+ 17  17 Ket
+ 22     End
+------------------------------------------------------------------
+
+/( ( (?(1)0|) )*   )/x
+Memory allocation (code space): 56
+------------------------------------------------------------------
+  0  50 Bra
+  5  40 CBra 1
+ 12     Brazero
+ 13  27 SCBra 2
+ 20  10 Cond
+ 25   1 Cond ref
+ 28     0
+ 30   5 Alt
+ 35  15 Ket
+ 40  27 KetRmax
+ 45  40 Ket
+ 50  50 Ket
+ 55     End
+------------------------------------------------------------------
+
+/(  (?(1)0|)*   )/x
+Memory allocation (code space): 44
+------------------------------------------------------------------
+  0  38 Bra
+  5  28 CBra 1
+ 12     Brazero
+ 13  10 SCond
+ 18   1 Cond ref
+ 21     0
+ 23   5 Alt
+ 28  15 KetRmax
+ 33  28 Ket
+ 38  38 Ket
+ 43     End
+------------------------------------------------------------------
+
+/[a]/
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     a
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+
+/[a]/utf
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     a
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+
+/[\xaa]/
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     \x{aa}
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+
+/[\xaa]/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   8 Bra
+  5     \x{aa}
+  8   8 Ket
+ 13     End
+------------------------------------------------------------------
+
+/[^a]/
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     [^a]
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+
+/[^a]/utf
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     [^a]
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+
+/[^\xaa]/
+Memory allocation (code space): 13
+------------------------------------------------------------------
+  0   7 Bra
+  5     [^\x{aa}]
+  7   7 Ket
+ 12     End
+------------------------------------------------------------------
+
+/[^\xaa]/utf
+Memory allocation (code space): 14
+------------------------------------------------------------------
+  0   8 Bra
+  5     [^\x{aa}]
+  8   8 Ket
+ 13     End
+------------------------------------------------------------------
+
+#pattern -memory
+
+/[^\d]/utf,ucp
+------------------------------------------------------------------
+  0  15 Bra
+  5     [^\p{Nd}]
+ 15  15 Ket
+ 20     End
+------------------------------------------------------------------
+
+/[[:^alpha:][:^cntrl:]]+/utf,ucp
+------------------------------------------------------------------
+  0  19 Bra
+  5     [\P{L}\P{Cc}]++
+ 19  19 Ket
+ 24     End
+------------------------------------------------------------------
+
+/[[:^cntrl:][:^alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  19 Bra
+  5     [\P{Cc}\P{L}]++
+ 19  19 Ket
+ 24     End
+------------------------------------------------------------------
+
+/[[:alpha:]]+/utf,ucp
+------------------------------------------------------------------
+  0  16 Bra
+  5     [\p{L}]++
+ 16  16 Ket
+ 21     End
+------------------------------------------------------------------
+
+/[[:^alpha:]\S]+/utf,ucp
+------------------------------------------------------------------
+  0  19 Bra
+  5     [\P{L}\P{Xsp}]++
+ 19  19 Ket
+ 24     End
+------------------------------------------------------------------
+
+/abc(d|e)(*THEN)x(123(*THEN)4|567(b|q)(*THEN)xx)/
+------------------------------------------------------------------
+  0  93 Bra
+  5     abc
+ 11   9 CBra 1
+ 18     d
+ 20   7 Alt
+ 25     e
+ 27  16 Ket
+ 32     *THEN
+ 33     x
+ 35  16 CBra 2
+ 42     123
+ 48     *THEN
+ 49     4
+ 51  37 Alt
+ 56     567
+ 62   9 CBra 3
+ 69     b
+ 71   7 Alt
+ 76     q
+ 78  16 Ket
+ 83     *THEN
+ 84     xx
+ 88  53 Ket
+ 93  93 Ket
+ 98     End
+------------------------------------------------------------------
+
+/(((a\2)|(a*)\g<-1>))*a?/
+------------------------------------------------------------------
+  0  83 Bra
+  5     Brazero
+  6  70 SCBra 1
+ 13  58 Once
+ 18  24 CBra 2
+ 25  12 CBra 3
+ 32     a
+ 34     \2
+ 37  12 Ket
+ 42  24 Alt
+ 47   9 CBra 4
+ 54     a*
+ 56   9 Ket
+ 61  47 Recurse
+ 66  48 Ket
+ 71  58 Ket
+ 76  70 KetRmax
+ 81     a?+
+ 83  83 Ket
+ 88     End
+------------------------------------------------------------------
+
+/((?+1)(\1))/
+------------------------------------------------------------------
+  0  47 Bra
+  5  37 Once
+ 10  27 CBra 1
+ 17  22 Recurse
+ 22  10 CBra 2
+ 29     \1
+ 32  10 Ket
+ 37  27 Ket
+ 42  37 Ket
+ 47  47 Ket
+ 52     End
+------------------------------------------------------------------
+
+"(?1)(?#?'){2}(a)"
+------------------------------------------------------------------
+  0  49 Bra
+  5  10 Once
+ 10  35 Recurse
+ 15  10 Ket
+ 20  10 Once
+ 25  35 Recurse
+ 30  10 Ket
+ 35   9 CBra 1
+ 42     a
+ 44   9 Ket
+ 49  49 Ket
+ 54     End
+------------------------------------------------------------------
+
+/.((?2)(?R)|\1|$)()/
+------------------------------------------------------------------
+  0  64 Bra
+  5     Any
+  6  41 Once
+ 11  17 CBra 1
+ 18  52 Recurse
+ 23   0 Recurse
+ 28   8 Alt
+ 33     \1
+ 36   6 Alt
+ 41     $
+ 42  31 Ket
+ 47  41 Ket
+ 52   7 CBra 2
+ 59   7 Ket
+ 64  64 Ket
+ 69     End
+------------------------------------------------------------------
+
+/.((?3)(?R)()(?2)|\1|$)()/
+------------------------------------------------------------------
+  0  81 Bra
+  5     Any
+  6  58 Once
+ 11  34 CBra 1
+ 18  69 Recurse
+ 23   0 Recurse
+ 28   7 CBra 2
+ 35   7 Ket
+ 40  28 Recurse
+ 45   8 Alt
+ 50     \1
+ 53   6 Alt
+ 58     $
+ 59  48 Ket
+ 64  58 Ket
+ 69   7 CBra 3
+ 76   7 Ket
+ 81  81 Ket
+ 86     End
+------------------------------------------------------------------
+
+/(?1)()((((((\1++))\x85)+)|))/
+------------------------------------------------------------------
+  0 115 Bra
+  5  10 Recurse
+ 10   7 CBra 1
+ 17   7 Ket
+ 22  88 CBra 2
+ 29  71 CBra 3
+ 36  59 CBra 4
+ 43  47 CBra 5
+ 50  33 CBra 6
+ 57  21 CBra 7
+ 64   9 Once
+ 69     \1+
+ 73   9 Ket
+ 78  21 Ket
+ 83  33 Ket
+ 88     \x{85}
+ 90  47 KetRmax
+ 95  59 Ket
+100   5 Alt
+105  76 Ket
+110  88 Ket
+115 115 Ket
+120     End
+------------------------------------------------------------------
+
+# Check the absolute limit on nesting (?| etc. This varies with code unit
+# width because the workspace is a different number of bytes. It will fail
+# with link size 2 in 8-bit and 16-bit but not in 32-bit.
+
+/(?|(?|(?J:(?|(?x:(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|(?|
+)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
+/parens_nest_limit=1000,-fullbincode
+
+# Use "expand" to create some very long patterns with nested parentheses, in
+# order to test workspace overflow. Again, this varies with code unit width,
+# and even with it fails in two modes, the error offset differs. It also varies
+# with link size - hence multiple tests with different values.
+
+/(?'ABC'\[[bar](]{105}*THEN:\[A]{255}\[)]{106}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{106}*THEN:\[A]{255}\[)]{107}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{159}*THEN:\[A]{255}\[)]{160}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{199}*THEN:\[A]{255}\[)]{200}/expand,-fullbincode
+
+/(?'ABC'\[[bar](]{299}*THEN:\[A]{255}\[)]{300}/expand,-fullbincode
+Failed: error 186 at offset 1224: regular expression is too complicated
+
+/(?(1)(?1)){8,}+()/debug
+------------------------------------------------------------------
+  0 181 Bra
+  5 159 Once
+ 10  13 Cond
+ 15   1 Cond ref
+ 18 169 Recurse
+ 23  13 Ket
+ 28  13 Cond
+ 33   1 Cond ref
+ 36 169 Recurse
+ 41  13 Ket
+ 46  13 Cond
+ 51   1 Cond ref
+ 54 169 Recurse
+ 59  13 Ket
+ 64  13 Cond
+ 69   1 Cond ref
+ 72 169 Recurse
+ 77  13 Ket
+ 82  13 Cond
+ 87   1 Cond ref
+ 90 169 Recurse
+ 95  13 Ket
+100  13 Cond
+105   1 Cond ref
+108 169 Recurse
+113  13 Ket
+118  13 Cond
+123   1 Cond ref
+126 169 Recurse
+131  13 Ket
+136  23 SBraPos
+141  13 SCond
+146   1 Cond ref
+149 169 Recurse
+154  13 Ket
+159  23 KetRpos
+164 159 Ket
+169   7 CBra 1
+176   7 Ket
+181 181 Ket
+186     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcd
+ 0: 
+ 1: 
+
+/(?(1)|a(?1)b){2,}+()/debug
+------------------------------------------------------------------
+  0  91 Bra
+  5  69 Once
+ 10   8 Cond
+ 15   1 Cond ref
+ 18  14 Alt
+ 23     a
+ 25  79 Recurse
+ 30     b
+ 32  22 Ket
+ 37  32 SBraPos
+ 42   8 SCond
+ 47   1 Cond ref
+ 50  14 Alt
+ 55     a
+ 57  79 Recurse
+ 62     b
+ 64  22 Ket
+ 69  32 KetRpos
+ 74  69 Ket
+ 79   7 CBra 1
+ 86   7 Ket
+ 91  91 Ket
+ 96     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Max back reference = 1
+May match empty string
+Subject length lower bound = 0
+    abcde
+No match
+
+/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+------------------------------------------------------------------
+  0 327 Bra
+  5 102 CBra 1
+ 12   5 Recurse
+ 17 219 Recurse
+ 22 231 Recurse
+ 27 243 Recurse
+ 32 255 Recurse
+ 37 267 Recurse
+ 42 279 Recurse
+ 47 291 Recurse
+ 52 303 Recurse
+ 57 303 Recurse
+ 62 291 Recurse
+ 67 279 Recurse
+ 72 267 Recurse
+ 77 255 Recurse
+ 82 243 Recurse
+ 87 231 Recurse
+ 92 219 Recurse
+ 97   5 Recurse
+102   0 Recurse
+107 102 Ket
+112 102 SCBra 1
+119   5 Recurse
+124 219 Recurse
+129 231 Recurse
+134 243 Recurse
+139 255 Recurse
+144 267 Recurse
+149 279 Recurse
+154 291 Recurse
+159 303 Recurse
+164 303 Recurse
+169 291 Recurse
+174 279 Recurse
+179 267 Recurse
+184 255 Recurse
+189 243 Recurse
+194 231 Recurse
+199 219 Recurse
+204   5 Recurse
+209   0 Recurse
+214 102 KetRmax
+219   7 CBra 2
+226   7 Ket
+231   7 CBra 3
+238   7 Ket
+243   7 CBra 4
+250   7 Ket
+255   7 CBra 5
+262   7 Ket
+267   7 CBra 6
+274   7 Ket
+279   7 CBra 7
+286   7 Ket
+291   7 CBra 8
+298   7 Ket
+303   7 CBra 9
+310   7 Ket
+315   7 CBra 10
+322   7 Ket
+327 327 Ket
+332     End
+------------------------------------------------------------------
+Capturing subpattern count = 10
+May match empty string
+Subject length lower bound = 0
+
+# End of testinput8
diff --git a/testdata/testoutput9 b/testdata/testoutput9
index 3aa2071..750a7e0 100644
--- a/testdata/testoutput9
+++ b/testdata/testoutput9
@@ -2,14 +2,10 @@
 # UTF-8 or Unicode property support. */
     
 #forbid_utf
+#newline_default lf any anycrlf
 
-/a\Cb/
-    aXb
- 0: aXb
-    a\nb
- 0: a\x0ab
-    ** Failers (too big char)
-No match
+/ab/
+\= Expect error message (too big char) and no match
     A\x{123}B
 ** Character \x{123} is greater than 255 and UTF-8 mode is not enabled.
 ** Truncation will probably give the wrong result.
@@ -317,11 +313,20 @@ Failed: error 151 at offset 3: octal value is greater than \377 in 8-bit non-UTF
 Failed: error 176 at offset 259: name is too long in (*MARK), (*PRUNE), (*SKIP), or (*THEN)
     XX
      
+/(*:0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF)XX/mark,alt_verbnames
+Failed: error 176 at offset 258: name is too long in (*MARK), (*PRUNE), (*SKIP), or (*THEN)
+    XX
+     
 /(*:0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDE)XX/mark
     XX
  0: XX
 MK: 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDE
 
+/(*:0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDE)XX/mark,alt_verbnames
+    XX
+ 0: XX
+MK: 0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDE
+
 /\u0100/alt_bsux,allow_empty_class,match_unset_backref,dupnames
 Failed: error 177 at offset 5: character code point value in \u.... sequence is too large
 
@@ -356,4 +361,7 @@ Failed: error 177 at offset 6: character code point value in \u.... sequence is
         End
 ------------------------------------------------------------------
 
+/(*MARK:a\x{100}b)z/alt_verbnames 
+Failed: error 134 at offset 14: character code point value in \x{} or \o{} is too large
+
 # End of testinput9
diff --git a/testdata/valgrind-jit.supp b/testdata/valgrind-jit.supp
new file mode 100644
index 0000000..73e87d2
--- /dev/null
+++ b/testdata/valgrind-jit.supp
@@ -0,0 +1,7 @@
+{
+   name
+   Memcheck:Addr16
+   obj:*
+   obj:*
+   obj:*
+}