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authorIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
committerIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
commitcba4af1b7643b0da036ff78fd152f74a906c4e97 (patch)
tree84f90cc1a9542b2f374932b04ea0752eabbd3741
Commit upstream pcre-8.39.tar.bz2
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-rw-r--r--doc/html/pcre_pattern_to_host_byte_order.html58
-rw-r--r--doc/html/pcre_refcount.html51
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-rw-r--r--doc/pcre_copy_named_substring.351
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-rw-r--r--doc/pcre_get_named_substring.354
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-rw-r--r--doc/pcre_pattern_to_host_byte_order.344
-rw-r--r--doc/pcre_refcount.336
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-rw-r--r--doc/pcre_utf16_to_host_byte_order.345
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-rw-r--r--doc/pcre_version.331
-rw-r--r--doc/pcreapi.32918
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-rw-r--r--doc/pcrecompat.3200
-rw-r--r--doc/pcrecpp.3348
-rw-r--r--doc/pcredemo.3424
-rw-r--r--doc/pcregrep.1683
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-rw-r--r--doc/pcrepattern.33301
-rw-r--r--doc/pcreperform.3177
-rw-r--r--doc/pcreposix.3267
-rw-r--r--doc/pcreprecompile.3155
-rw-r--r--doc/pcresample.399
-rw-r--r--doc/pcrestack.3215
-rw-r--r--doc/pcresyntax.3540
-rw-r--r--doc/pcretest.11156
-rw-r--r--doc/pcretest.txt1087
-rw-r--r--doc/pcreunicode.3249
-rw-r--r--doc/perltest.txt42
-rwxr-xr-xinstall-sh501
-rw-r--r--libpcre.pc.in13
-rw-r--r--libpcre16.pc.in13
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-rw-r--r--pcre32_valid_utf32.c124
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-rw-r--r--pcretest.c5754
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368 files changed, 296028 insertions, 0 deletions
diff --git a/132html b/132html
new file mode 100755
index 0000000..e000249
--- /dev/null
+++ b/132html
@@ -0,0 +1,313 @@
+#! /usr/bin/perl -w
+
+# Script to turn PCRE man pages into HTML
+
+
+# Subroutine to handle font changes and other escapes
+
+sub do_line {
+my($s) = $_[0];
+
+$s =~ s/</&#60;/g; # Deal with < and >
+$s =~ s/>/&#62;/g;
+$s =~ s"\\fI(.*?)\\f[RP]"<i>$1</i>"g;
+$s =~ s"\\fB(.*?)\\f[RP]"<b>$1</b>"g;
+$s =~ s"\\e"\\"g;
+$s =~ s/(?<=Copyright )\(c\)/&copy;/g;
+$s;
+}
+
+# Subroutine to ensure not in a paragraph
+
+sub end_para {
+if ($inpara)
+ {
+ print TEMP "</PRE>\n" if ($inpre);
+ print TEMP "</P>\n";
+ }
+$inpara = $inpre = 0;
+$wrotetext = 0;
+}
+
+# Subroutine to start a new paragraph
+
+sub new_para {
+&end_para();
+print TEMP "<P>\n";
+$inpara = 1;
+}
+
+
+# Main program
+
+$innf = 0;
+$inpara = 0;
+$inpre = 0;
+$wrotetext = 0;
+$toc = 0;
+$ref = 1;
+
+while ($#ARGV >= 0 && $ARGV[0] =~ /^-/)
+ {
+ $toc = 1 if $ARGV[0] eq "-toc";
+ shift;
+ }
+
+# Initial output to STDOUT
+
+print <<End ;
+<html>
+<head>
+<title>$ARGV[0] specification</title>
+</head>
+<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
+<h1>$ARGV[0] man page</h1>
+<p>
+Return to the <a href="index.html">PCRE index page</a>.
+</p>
+<p>
+This page is part of the PCRE HTML documentation. It was generated automatically
+from the original man page. If there is any nonsense in it, please consult the
+man page, in case the conversion went wrong.
+<br>
+End
+
+print "<ul>\n" if ($toc);
+
+open(TEMP, ">/tmp/$$") || die "Can't open /tmp/$$ for output\n";
+
+while (<STDIN>)
+ {
+ # Handle lines beginning with a dot
+
+ if (/^\./)
+ {
+ # Some of the PCRE man pages used to contain instances of .br. However,
+ # they should have all been removed because they cause trouble in some
+ # (other) automated systems that translate man pages to HTML. Complain if
+ # we find .br or .in (another macro that is deprecated).
+
+ if (/^\.br/ || /^\.in/)
+ {
+ print STDERR "\n*** Deprecated macro encountered - rewrite needed\n";
+ print STDERR "*** $_\n";
+ die "*** Processing abandoned\n";
+ }
+
+ # Instead of .br, relevent "literal" sections are enclosed in .nf/.fi.
+
+ elsif (/^\.nf/)
+ {
+ $innf = 1;
+ }
+
+ elsif (/^\.fi/)
+ {
+ $innf = 0;
+ }
+
+ # Handling .sp is subtle. If it is inside a literal section, do nothing if
+ # the next line is a non literal text line; similarly, if not inside a
+ # literal section, do nothing if a literal follows, unless we are inside
+ # a .nf/.ne section. The point being that the <pre> and </pre> that delimit
+ # literal sections will do the spacing. Always skip if no previous output.
+
+ elsif (/^\.sp/)
+ {
+ if ($wrotetext)
+ {
+ $_ = <STDIN>;
+ if ($inpre)
+ {
+ print TEMP "\n" if (/^[\s.]/);
+ }
+ else
+ {
+ print TEMP "<br>\n<br>\n" if ($innf || !/^[\s.]/);
+ }
+ redo; # Now process the lookahead line we just read
+ }
+ }
+ elsif (/^\.TP/ || /^\.PP/ || /^\.P/)
+ {
+ &new_para();
+ }
+ elsif (/^\.SH\s*("?)(.*)\1/)
+ {
+ # Ignore the NAME section
+ if ($2 =~ /^NAME\b/)
+ {
+ <STDIN>;
+ next;
+ }
+
+ &end_para();
+ my($title) = &do_line($2);
+ if ($toc)
+ {
+ printf("<li><a name=\"TOC%d\" href=\"#SEC%d\">$title</a>\n",
+ $ref, $ref);
+ printf TEMP ("<br><a name=\"SEC%d\" href=\"#TOC1\">$title</a><br>\n",
+ $ref);
+ $ref++;
+ }
+ else
+ {
+ print TEMP "<br><b>\n$title\n</b><br>\n";
+ }
+ }
+ elsif (/^\.SS\s*("?)(.*)\1/)
+ {
+ &end_para();
+ my($title) = &do_line($2);
+ print TEMP "<br><b>\n$title\n</b><br>\n";
+ }
+ elsif (/^\.B\s*(.*)/)
+ {
+ &new_para() if (!$inpara);
+ $_ = &do_line($1);
+ s/"(.*?)"/$1/g;
+ print TEMP "<b>$_</b>\n";
+ $wrotetext = 1;
+ }
+ elsif (/^\.I\s*(.*)/)
+ {
+ &new_para() if (!$inpara);
+ $_ = &do_line($1);
+ s/"(.*?)"/$1/g;
+ print TEMP "<i>$_</i>\n";
+ $wrotetext = 1;
+ }
+
+ # A comment that starts "HREF" takes the next line as a name that
+ # is turned into a hyperlink, using the text given, which might be
+ # in a special font. If it ends in () or (digits) or punctuation, they
+ # aren't part of the link.
+
+ elsif (/^\.\\"\s*HREF/)
+ {
+ $_=<STDIN>;
+ chomp;
+ $_ = &do_line($_);
+ $_ =~ s/\s+$//;
+ $_ =~ /^(?:<.>)?([^<(]+)(?:\(\))?(?:<\/.>)?(?:\(\d+\))?[.,;:]?$/;
+ print TEMP "<a href=\"$1.html\">$_</a>\n";
+ }
+
+ # A comment that starts "HTML" inserts literal HTML
+
+ elsif (/^\.\\"\s*HTML\s*(.*)/)
+ {
+ print TEMP $1;
+ }
+
+ # A comment that starts < inserts that HTML at the end of the
+ # *next* input line - so as not to get a newline between them.
+
+ elsif (/^\.\\"\s*(<.*>)/)
+ {
+ my($markup) = $1;
+ $_=<STDIN>;
+ chomp;
+ $_ = &do_line($_);
+ $_ =~ s/\s+$//;
+ print TEMP "$_$markup\n";
+ }
+
+ # A comment that starts JOIN joins the next two lines together, with one
+ # space between them. Then that line is processed. This is used in some
+ # displays where two lines are needed for the "man" version. JOINSH works
+ # the same, except that it assumes this is a shell command, so removes
+ # continuation backslashes.
+
+ elsif (/^\.\\"\s*JOIN(SH)?/)
+ {
+ my($one,$two);
+ $one = <STDIN>;
+ $two = <STDIN>;
+ $one =~ s/\s*\\e\s*$// if (defined($1));
+ chomp($one);
+ $two =~ s/^\s+//;
+ $_ = "$one $two";
+ redo; # Process the joined lines
+ }
+
+ # .EX/.EE are used in the pcredemo page to bracket the entire program,
+ # which is unmodified except for turning backslash into "\e".
+
+ elsif (/^\.EX\s*$/)
+ {
+ print TEMP "<PRE>\n";
+ while (<STDIN>)
+ {
+ last if /^\.EE\s*$/;
+ s/\\e/\\/g;
+ s/&/&amp;/g;
+ s/</&lt;/g;
+ s/>/&gt;/g;
+ print TEMP;
+ }
+ }
+
+ # Ignore anything not recognized
+
+ next;
+ }
+
+ # Line does not begin with a dot. Replace blank lines with new paragraphs
+
+ if (/^\s*$/)
+ {
+ &end_para() if ($wrotetext);
+ next;
+ }
+
+ # Convert fonts changes and output an ordinary line. Ensure that indented
+ # lines are marked as literal.
+
+ $_ = &do_line($_);
+ &new_para() if (!$inpara);
+
+ if (/^\s/)
+ {
+ if (!$inpre)
+ {
+ print TEMP "<pre>\n";
+ $inpre = 1;
+ }
+ }
+ elsif ($inpre)
+ {
+ print TEMP "</pre>\n";
+ $inpre = 0;
+ }
+
+ # Add <br> to the end of a non-literal line if we are within .nf/.fi
+
+ $_ .= "<br>\n" if (!$inpre && $innf);
+
+ print TEMP;
+ $wrotetext = 1;
+ }
+
+# The TOC, if present, will have been written - terminate it
+
+print "</ul>\n" if ($toc);
+
+# Copy the remainder to the standard output
+
+close(TEMP);
+open(TEMP, "/tmp/$$") || die "Can't open /tmp/$$ for input\n";
+
+print while (<TEMP>);
+
+print <<End ;
+<p>
+Return to the <a href="index.html">PCRE index page</a>.
+</p>
+End
+
+close(TEMP);
+unlink("/tmp/$$");
+
+# End
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..342417a
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,45 @@
+THE MAIN PCRE LIBRARY
+---------------------
+
+Written by: Philip Hazel
+Email local part: ph10
+Email domain: cam.ac.uk
+
+University of Cambridge Computing Service,
+Cambridge, England.
+
+Copyright (c) 1997-2016 University of Cambridge
+All rights reserved
+
+
+PCRE JUST-IN-TIME COMPILATION SUPPORT
+-------------------------------------
+
+Written by: Zoltan Herczeg
+Email local part: hzmester
+Emain domain: freemail.hu
+
+Copyright(c) 2010-2016 Zoltan Herczeg
+All rights reserved.
+
+
+STACK-LESS JUST-IN-TIME COMPILER
+--------------------------------
+
+Written by: Zoltan Herczeg
+Email local part: hzmester
+Emain domain: freemail.hu
+
+Copyright(c) 2009-2016 Zoltan Herczeg
+All rights reserved.
+
+
+THE C++ WRAPPER LIBRARY
+-----------------------
+
+Written by: Google Inc.
+
+Copyright (c) 2007-2012 Google Inc
+All rights reserved
+
+####
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..ce6b167
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,1008 @@
+# CMakeLists.txt
+#
+#
+# This file allows building PCRE with the CMake configuration and build
+# tool. Download CMake in source or binary form from http://www.cmake.org/
+#
+# Original listfile by Christian Ehrlicher <Ch.Ehrlicher@gmx.de>
+# Refined and expanded by Daniel Richard G. <skunk@iSKUNK.ORG>
+# 2007-09-14 mod by Sheri so 7.4 supported configuration options can be entered
+# 2007-09-19 Adjusted by PH to retain previous default settings
+# 2007-12-26 (a) On UNIX, use names libpcre instead of just pcre
+# (b) Ensure pcretest and pcregrep link with the local library,
+# not a previously-installed one.
+# (c) Add PCRE_SUPPORT_LIBREADLINE, PCRE_SUPPORT_LIBZ, and
+# PCRE_SUPPORT_LIBBZ2.
+# 2008-01-20 Brought up to date to include several new features by Christian
+# Ehrlicher.
+# 2008-01-22 Sheri added options for backward compatibility of library names
+# when building with minGW:
+# if "ON", NON_STANDARD_LIB_PREFIX causes shared libraries to
+# be built without "lib" as prefix. (The libraries will be named
+# pcre.dll, pcreposix.dll and pcrecpp.dll).
+# if "ON", NON_STANDARD_LIB_SUFFIX causes shared libraries to
+# be built with suffix of "-0.dll". (The libraries will be named
+# libpcre-0.dll, libpcreposix-0.dll and libpcrecpp-0.dll - same names
+# built by default with Configure and Make.
+# 2008-01-23 PH removed the automatic build of pcredemo.
+# 2008-04-22 PH modified READLINE support so it finds NCURSES when needed.
+# 2008-07-03 PH updated for revised UCP property support (change of files)
+# 2009-03-23 PH applied Steven Van Ingelgem's patch to change the name
+# CMAKE_BINARY_DIR to PROJECT_BINARY_DIR so that it works when PCRE
+# is included within another project.
+# 2009-03-23 PH applied a modified version of Steven Van Ingelgem's patches to
+# add options to stop the building of pcregrep and the tests, and
+# to disable the final configuration report.
+# 2009-04-11 PH applied Christian Ehrlicher's patch to show compiler flags that
+# are set by specifying a release type.
+# 2010-01-02 PH added test for stdint.h
+# 2010-03-02 PH added test for inttypes.h
+# 2011-08-01 PH added PCREGREP_BUFSIZE
+# 2011-08-22 PH added PCRE_SUPPORT_JIT
+# 2011-09-06 PH modified WIN32 ADD_TEST line as suggested by Sergey Cherepanov
+# 2011-09-06 PH added PCRE_SUPPORT_PCREGREP_JIT
+# 2011-10-04 Sheri added support for including coff data in windows shared libraries
+# compiled with MINGW if pcre.rc and/or pcreposix.rc are placed in
+# the source dir by the user prior to building
+# 2011-10-04 Sheri changed various add_test's to use exes' location built instead
+# of DEBUG location only (likely only matters in MSVC)
+# 2011-10-04 Sheri added scripts to provide needed variables to RunTest and
+# RunGrepTest (used for UNIX and Msys)
+# 2011-10-04 Sheri added scripts to provide needed variables and to execute
+# RunTest.bat in Win32 (for effortless testing with "make test")
+# 2011-10-04 Sheri Increased minimum required cmake version
+# 2012-01-06 PH removed pcre_info.c and added pcre_string_utils.c
+# 2012-01-10 Zoltan Herczeg added libpcre16 support
+# 2012-01-13 Stephen Kelly added out of source build support
+# 2012-01-17 PH applied Stephen Kelly's patch to parse the version data out
+# of the configure.ac file
+# 2012-02-26 PH added support for libedit
+# 2012-09-06 PH added support for PCRE_EBCDIC_NL25
+# 2012-09-08 ChPe added PCRE32 support
+# 2012-10-23 PH added support for VALGRIND and GCOV
+# 2012-12-08 PH added patch from Daniel Richard G to quash some MSVC warnings
+# 2013-07-01 PH realized that the "support" for GCOV was a total nonsense and
+# so it has been removed.
+# 2013-10-08 PH got rid of the "source" command, which is a bash-ism (use ".")
+# 2013-11-05 PH added support for PARENS_NEST_LIMIT
+# 2016-03-01 PH applied Chris Wilson's patch for MSVC static build
+
+PROJECT(PCRE C CXX)
+
+# Increased minimum to 2.8.0 to support newer add_test features. Set policy
+# CMP0026 to avoid warnings for the use of LOCATION in GET_TARGET_PROPERTY.
+
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8.0)
+CMAKE_POLICY(SET CMP0026 OLD)
+
+SET(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake) # for FindReadline.cmake
+
+# external packages
+FIND_PACKAGE( BZip2 )
+FIND_PACKAGE( ZLIB )
+FIND_PACKAGE( Readline )
+FIND_PACKAGE( Editline )
+
+# Configuration checks
+
+INCLUDE(CheckIncludeFile)
+INCLUDE(CheckIncludeFileCXX)
+INCLUDE(CheckFunctionExists)
+INCLUDE(CheckTypeSize)
+
+CHECK_INCLUDE_FILE(dirent.h HAVE_DIRENT_H)
+CHECK_INCLUDE_FILE(stdint.h HAVE_STDINT_H)
+CHECK_INCLUDE_FILE(inttypes.h HAVE_INTTYPES_H)
+CHECK_INCLUDE_FILE(sys/stat.h HAVE_SYS_STAT_H)
+CHECK_INCLUDE_FILE(sys/types.h HAVE_SYS_TYPES_H)
+CHECK_INCLUDE_FILE(unistd.h HAVE_UNISTD_H)
+CHECK_INCLUDE_FILE(windows.h HAVE_WINDOWS_H)
+
+CHECK_INCLUDE_FILE_CXX(type_traits.h HAVE_TYPE_TRAITS_H)
+CHECK_INCLUDE_FILE_CXX(bits/type_traits.h HAVE_BITS_TYPE_TRAITS_H)
+
+CHECK_FUNCTION_EXISTS(bcopy HAVE_BCOPY)
+CHECK_FUNCTION_EXISTS(memmove HAVE_MEMMOVE)
+CHECK_FUNCTION_EXISTS(strerror HAVE_STRERROR)
+CHECK_FUNCTION_EXISTS(strtoll HAVE_STRTOLL)
+CHECK_FUNCTION_EXISTS(strtoq HAVE_STRTOQ)
+CHECK_FUNCTION_EXISTS(_strtoi64 HAVE__STRTOI64)
+
+CHECK_TYPE_SIZE("long long" LONG_LONG)
+CHECK_TYPE_SIZE("unsigned long long" UNSIGNED_LONG_LONG)
+
+# User-configurable options
+#
+# (Note: CMakeSetup displays these in alphabetical order, regardless of
+# the order we use here)
+
+SET(BUILD_SHARED_LIBS OFF CACHE BOOL
+ "Build shared libraries instead of static ones.")
+
+OPTION(PCRE_BUILD_PCRE8 "Build 8 bit PCRE library" ON)
+
+OPTION(PCRE_BUILD_PCRE16 "Build 16 bit PCRE library" OFF)
+
+OPTION(PCRE_BUILD_PCRE32 "Build 32 bit PCRE library" OFF)
+
+OPTION(PCRE_BUILD_PCRECPP "Build the PCRE C++ library (pcrecpp)." ON)
+
+SET(PCRE_EBCDIC OFF CACHE BOOL
+ "Use EBCDIC coding instead of ASCII. (This is rarely used outside of mainframe systems.)")
+
+SET(PCRE_EBCDIC_NL25 OFF CACHE BOOL
+ "Use 0x25 as EBCDIC NL character instead of 0x15; implies EBCDIC.")
+
+SET(PCRE_LINK_SIZE "2" CACHE STRING
+ "Internal link size (2, 3 or 4 allowed). See LINK_SIZE in config.h.in for details.")
+
+SET(PCRE_PARENS_NEST_LIMIT "250" CACHE STRING
+ "Default nested parentheses limit. See PARENS_NEST_LIMIT in config.h.in for details.")
+
+SET(PCRE_MATCH_LIMIT "10000000" CACHE STRING
+ "Default limit on internal looping. See MATCH_LIMIT in config.h.in for details.")
+
+SET(PCRE_MATCH_LIMIT_RECURSION "MATCH_LIMIT" CACHE STRING
+ "Default limit on internal recursion. See MATCH_LIMIT_RECURSION in config.h.in for details.")
+
+SET(PCREGREP_BUFSIZE "20480" CACHE STRING
+ "Buffer size parameter for pcregrep. See PCREGREP_BUFSIZE in config.h.in for details.")
+
+SET(PCRE_NEWLINE "LF" CACHE STRING
+ "What to recognize as a newline (one of CR, LF, CRLF, ANY, ANYCRLF).")
+
+SET(PCRE_NO_RECURSE OFF CACHE BOOL
+ "If ON, then don't use stack recursion when matching. See NO_RECURSE in config.h.in for details.")
+
+SET(PCRE_POSIX_MALLOC_THRESHOLD "10" CACHE STRING
+ "Threshold for malloc() usage. See POSIX_MALLOC_THRESHOLD in config.h.in for details.")
+
+SET(PCRE_SUPPORT_JIT OFF CACHE BOOL
+ "Enable support for Just-in-time compiling.")
+
+SET(PCRE_SUPPORT_PCREGREP_JIT ON CACHE BOOL
+ "Enable use of Just-in-time compiling in pcregrep.")
+
+SET(PCRE_SUPPORT_UTF OFF CACHE BOOL
+ "Enable support for Unicode Transformation Format (UTF-8/UTF-16/UTF-32) encoding.")
+
+SET(PCRE_SUPPORT_UNICODE_PROPERTIES OFF CACHE BOOL
+ "Enable support for Unicode properties (if set, UTF support will be enabled as well).")
+
+SET(PCRE_SUPPORT_BSR_ANYCRLF OFF CACHE BOOL
+ "ON=Backslash-R matches only LF CR and CRLF, OFF=Backslash-R matches all Unicode Linebreaks")
+
+SET(PCRE_SUPPORT_VALGRIND OFF CACHE BOOL
+ "Enable Valgrind support.")
+
+OPTION(PCRE_SHOW_REPORT "Show the final configuration report" ON)
+OPTION(PCRE_BUILD_PCREGREP "Build pcregrep" ON)
+OPTION(PCRE_BUILD_TESTS "Build the tests" ON)
+
+IF (MINGW)
+ OPTION(NON_STANDARD_LIB_PREFIX
+ "ON=Shared libraries built in mingw will be named pcre.dll, etc., instead of libpcre.dll, etc."
+ OFF)
+
+ OPTION(NON_STANDARD_LIB_SUFFIX
+ "ON=Shared libraries built in mingw will be named libpcre-0.dll, etc., instead of libpcre.dll, etc."
+ OFF)
+ENDIF(MINGW)
+
+IF(MSVC)
+ OPTION(INSTALL_MSVC_PDB
+ "ON=Install .pdb files built by MSVC, if generated"
+ OFF)
+ENDIF(MSVC)
+
+# bzip2 lib
+IF(BZIP2_FOUND)
+ OPTION (PCRE_SUPPORT_LIBBZ2 "Enable support for linking pcregrep with libbz2." ON)
+ENDIF(BZIP2_FOUND)
+IF(PCRE_SUPPORT_LIBBZ2)
+ INCLUDE_DIRECTORIES(${BZIP2_INCLUDE_DIR})
+ENDIF(PCRE_SUPPORT_LIBBZ2)
+
+# zlib
+IF(ZLIB_FOUND)
+ OPTION (PCRE_SUPPORT_LIBZ "Enable support for linking pcregrep with libz." ON)
+ENDIF(ZLIB_FOUND)
+IF(PCRE_SUPPORT_LIBZ)
+ INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIR})
+ENDIF(PCRE_SUPPORT_LIBZ)
+
+# editline lib
+IF(EDITLINE_FOUND)
+ OPTION (PCRE_SUPPORT_LIBEDIT "Enable support for linking pcretest with libedit." OFF)
+ENDIF(EDITLINE_FOUND)
+IF(PCRE_SUPPORT_LIBEDIT)
+ INCLUDE_DIRECTORIES(${EDITLINE_INCLUDE_DIR})
+ENDIF(PCRE_SUPPORT_LIBEDIT)
+
+# readline lib
+IF(READLINE_FOUND)
+ OPTION (PCRE_SUPPORT_LIBREADLINE "Enable support for linking pcretest with libreadline." ON)
+ENDIF(READLINE_FOUND)
+IF(PCRE_SUPPORT_LIBREADLINE)
+ INCLUDE_DIRECTORIES(${READLINE_INCLUDE_DIR})
+ENDIF(PCRE_SUPPORT_LIBREADLINE)
+
+# Prepare build configuration
+
+SET(pcre_have_type_traits 0)
+SET(pcre_have_bits_type_traits 0)
+
+IF(HAVE_TYPE_TRAITS_H)
+ SET(pcre_have_type_traits 1)
+ENDIF(HAVE_TYPE_TRAITS_H)
+
+IF(HAVE_BITS_TYPE_TRAITS_H)
+ SET(pcre_have_bits_type_traits 1)
+ENDIF(HAVE_BITS_TYPE_TRAITS_H)
+
+SET(pcre_have_long_long 0)
+SET(pcre_have_ulong_long 0)
+
+IF(HAVE_LONG_LONG)
+ SET(pcre_have_long_long 1)
+ENDIF(HAVE_LONG_LONG)
+
+IF(HAVE_UNSIGNED_LONG_LONG)
+ SET(pcre_have_ulong_long 1)
+ENDIF(HAVE_UNSIGNED_LONG_LONG)
+
+IF(NOT BUILD_SHARED_LIBS)
+ SET(PCRE_STATIC 1)
+ENDIF(NOT BUILD_SHARED_LIBS)
+
+IF(NOT PCRE_BUILD_PCRE8 AND NOT PCRE_BUILD_PCRE16 AND NOT PCRE_BUILD_PCRE32)
+ MESSAGE(FATAL_ERROR "At least one of PCRE_BUILD_PCRE8, PCRE_BUILD_PCRE16 or PCRE_BUILD_PCRE32 must be enabled")
+ENDIF(NOT PCRE_BUILD_PCRE8 AND NOT PCRE_BUILD_PCRE16 AND NOT PCRE_BUILD_PCRE32)
+
+IF(PCRE_BUILD_PCRE8)
+ SET(SUPPORT_PCRE8 1)
+ENDIF(PCRE_BUILD_PCRE8)
+
+IF(PCRE_BUILD_PCRE16)
+ SET(SUPPORT_PCRE16 1)
+ENDIF(PCRE_BUILD_PCRE16)
+
+IF(PCRE_BUILD_PCRE32)
+ SET(SUPPORT_PCRE32 1)
+ENDIF(PCRE_BUILD_PCRE32)
+
+IF(PCRE_BUILD_PCRECPP AND NOT PCRE_BUILD_PCRE8)
+ MESSAGE(STATUS "** PCRE_BUILD_PCRE8 must be enabled for the C++ library support")
+ SET(PCRE_BUILD_PCRECPP OFF)
+ENDIF(PCRE_BUILD_PCRECPP AND NOT PCRE_BUILD_PCRE8)
+
+IF(PCRE_BUILD_PCREGREP AND NOT PCRE_BUILD_PCRE8)
+ MESSAGE(STATUS "** PCRE_BUILD_PCRE8 must be enabled for the pcregrep program")
+ SET(PCRE_BUILD_PCREGREP OFF)
+ENDIF(PCRE_BUILD_PCREGREP AND NOT PCRE_BUILD_PCRE8)
+
+IF(PCRE_SUPPORT_LIBREADLINE AND PCRE_SUPPORT_LIBEDIT)
+ MESSAGE(FATAL_ERROR "Only one of libreadline or libeditline can be specified")
+ENDIF(PCRE_SUPPORT_LIBREADLINE AND PCRE_SUPPORT_LIBEDIT)
+
+IF(PCRE_SUPPORT_BSR_ANYCRLF)
+ SET(BSR_ANYCRLF 1)
+ENDIF(PCRE_SUPPORT_BSR_ANYCRLF)
+
+IF(PCRE_SUPPORT_UTF OR PCRE_SUPPORT_UNICODE_PROPERTIES)
+ SET(SUPPORT_UTF 1)
+ SET(PCRE_SUPPORT_UTF ON)
+ENDIF(PCRE_SUPPORT_UTF OR PCRE_SUPPORT_UNICODE_PROPERTIES)
+
+IF(PCRE_SUPPORT_UNICODE_PROPERTIES)
+ SET(SUPPORT_UCP 1)
+ENDIF(PCRE_SUPPORT_UNICODE_PROPERTIES)
+
+IF(PCRE_SUPPORT_JIT)
+ SET(SUPPORT_JIT 1)
+ENDIF(PCRE_SUPPORT_JIT)
+
+IF(PCRE_SUPPORT_PCREGREP_JIT)
+ SET(SUPPORT_PCREGREP_JIT 1)
+ENDIF(PCRE_SUPPORT_PCREGREP_JIT)
+
+IF(PCRE_SUPPORT_VALGRIND)
+ SET(SUPPORT_VALGRIND 1)
+ENDIF(PCRE_SUPPORT_VALGRIND)
+
+# This next one used to contain
+# SET(PCRETEST_LIBS ${READLINE_LIBRARY})
+# but I was advised to add the NCURSES test as well, along with
+# some modifications to cmake/FindReadline.cmake which should
+# make it possible to override the default if necessary. PH
+
+IF(PCRE_SUPPORT_LIBREADLINE)
+ SET(SUPPORT_LIBREADLINE 1)
+ SET(PCRETEST_LIBS ${READLINE_LIBRARY} ${NCURSES_LIBRARY})
+ENDIF(PCRE_SUPPORT_LIBREADLINE)
+
+# libedit is a plug-compatible alternative to libreadline
+
+IF(PCRE_SUPPORT_LIBEDIT)
+ SET(SUPPORT_LIBEDIT 1)
+ SET(PCRETEST_LIBS ${EDITLINE_LIBRARY} ${NCURSES_LIBRARY})
+ENDIF(PCRE_SUPPORT_LIBEDIT)
+
+IF(PCRE_SUPPORT_LIBZ)
+ SET(SUPPORT_LIBZ 1)
+ SET(PCREGREP_LIBS ${PCREGREP_LIBS} ${ZLIB_LIBRARIES})
+ENDIF(PCRE_SUPPORT_LIBZ)
+
+IF(PCRE_SUPPORT_LIBBZ2)
+ SET(SUPPORT_LIBBZ2 1)
+ SET(PCREGREP_LIBS ${PCREGREP_LIBS} ${BZIP2_LIBRARIES})
+ENDIF(PCRE_SUPPORT_LIBBZ2)
+
+SET(NEWLINE "")
+
+IF(PCRE_NEWLINE STREQUAL "LF")
+ SET(NEWLINE "10")
+ENDIF(PCRE_NEWLINE STREQUAL "LF")
+IF(PCRE_NEWLINE STREQUAL "CR")
+ SET(NEWLINE "13")
+ENDIF(PCRE_NEWLINE STREQUAL "CR")
+IF(PCRE_NEWLINE STREQUAL "CRLF")
+ SET(NEWLINE "3338")
+ENDIF(PCRE_NEWLINE STREQUAL "CRLF")
+IF(PCRE_NEWLINE STREQUAL "ANY")
+ SET(NEWLINE "-1")
+ENDIF(PCRE_NEWLINE STREQUAL "ANY")
+IF(PCRE_NEWLINE STREQUAL "ANYCRLF")
+ SET(NEWLINE "-2")
+ENDIF(PCRE_NEWLINE STREQUAL "ANYCRLF")
+
+IF(NEWLINE STREQUAL "")
+ MESSAGE(FATAL_ERROR "The PCRE_NEWLINE variable must be set to one of the following values: \"LF\", \"CR\", \"CRLF\", \"ANY\", \"ANYCRLF\".")
+ENDIF(NEWLINE STREQUAL "")
+
+IF(PCRE_EBCDIC)
+ SET(EBCDIC 1)
+IF(PCRE_NEWLINE STREQUAL "LF")
+ SET(NEWLINE "21")
+ENDIF(PCRE_NEWLINE STREQUAL "LF")
+IF(PCRE_NEWLINE STREQUAL "CRLF")
+ SET(NEWLINE "3349")
+ENDIF(PCRE_NEWLINE STREQUAL "CRLF")
+ENDIF(PCRE_EBCDIC)
+
+IF(PCRE_EBCDIC_NL25)
+ SET(EBCDIC 1)
+ SET(EBCDIC_NL25 1)
+IF(PCRE_NEWLINE STREQUAL "LF")
+ SET(NEWLINE "37")
+ENDIF(PCRE_NEWLINE STREQUAL "LF")
+IF(PCRE_NEWLINE STREQUAL "CRLF")
+ SET(NEWLINE "3365")
+ENDIF(PCRE_NEWLINE STREQUAL "CRLF")
+ENDIF(PCRE_EBCDIC_NL25)
+
+IF(PCRE_NO_RECURSE)
+ SET(NO_RECURSE 1)
+ENDIF(PCRE_NO_RECURSE)
+
+# Output files
+CONFIGURE_FILE(config-cmake.h.in
+ ${PROJECT_BINARY_DIR}/config.h
+ @ONLY)
+
+# Parse version numbers and date out of configure.ac
+
+file(STRINGS ${PROJECT_SOURCE_DIR}/configure.ac
+ configure_lines
+ LIMIT_COUNT 50 # Read only the first 50 lines of the file
+)
+
+set(SEARCHED_VARIABLES "pcre_major" "pcre_minor" "pcre_prerelease" "pcre_date")
+foreach(configure_line ${configure_lines})
+ foreach(_substitution_variable ${SEARCHED_VARIABLES})
+ string(TOUPPER ${_substitution_variable} _substitution_variable_upper)
+ if (NOT ${_substitution_variable_upper})
+ string(REGEX MATCH "m4_define\\(${_substitution_variable}, \\[(.*)\\]" MACTHED_STRING ${configure_line})
+ if (CMAKE_MATCH_1)
+ set(${_substitution_variable_upper} ${CMAKE_MATCH_1})
+ endif()
+ endif()
+ endforeach()
+endforeach()
+
+CONFIGURE_FILE(pcre.h.in
+ ${PROJECT_BINARY_DIR}/pcre.h
+ @ONLY)
+
+# What about pcre-config and libpcre.pc?
+
+IF(PCRE_BUILD_PCRECPP)
+ CONFIGURE_FILE(pcre_stringpiece.h.in
+ ${PROJECT_BINARY_DIR}/pcre_stringpiece.h
+ @ONLY)
+
+ CONFIGURE_FILE(pcrecpparg.h.in
+ ${PROJECT_BINARY_DIR}/pcrecpparg.h
+ @ONLY)
+ENDIF(PCRE_BUILD_PCRECPP)
+
+# Character table generation
+
+OPTION(PCRE_REBUILD_CHARTABLES "Rebuild char tables" OFF)
+IF(PCRE_REBUILD_CHARTABLES)
+ ADD_EXECUTABLE(dftables dftables.c)
+
+ GET_TARGET_PROPERTY(DFTABLES_EXE dftables LOCATION)
+
+ ADD_CUSTOM_COMMAND(
+ COMMENT "Generating character tables (pcre_chartables.c) for current locale"
+ DEPENDS dftables
+ COMMAND ${DFTABLES_EXE}
+ ARGS ${PROJECT_BINARY_DIR}/pcre_chartables.c
+ OUTPUT ${PROJECT_BINARY_DIR}/pcre_chartables.c
+ )
+ELSE(PCRE_REBUILD_CHARTABLES)
+ CONFIGURE_FILE(${PROJECT_SOURCE_DIR}/pcre_chartables.c.dist
+ ${PROJECT_BINARY_DIR}/pcre_chartables.c
+ COPYONLY)
+ENDIF(PCRE_REBUILD_CHARTABLES)
+
+# Source code
+
+SET(PCRE_HEADERS ${PROJECT_BINARY_DIR}/pcre.h)
+
+IF(PCRE_BUILD_PCRE8)
+SET(PCRE_SOURCES
+ pcre_byte_order.c
+ pcre_chartables.c
+ pcre_compile.c
+ pcre_config.c
+ pcre_dfa_exec.c
+ pcre_exec.c
+ pcre_fullinfo.c
+ pcre_get.c
+ pcre_globals.c
+ pcre_jit_compile.c
+ pcre_maketables.c
+ pcre_newline.c
+ pcre_ord2utf8.c
+ pcre_refcount.c
+ pcre_string_utils.c
+ pcre_study.c
+ pcre_tables.c
+ pcre_ucd.c
+ pcre_valid_utf8.c
+ pcre_version.c
+ pcre_xclass.c
+)
+
+SET(PCREPOSIX_HEADERS pcreposix.h)
+
+SET(PCREPOSIX_SOURCES pcreposix.c)
+
+ENDIF(PCRE_BUILD_PCRE8)
+
+IF(PCRE_BUILD_PCRE16)
+SET(PCRE16_SOURCES
+ pcre16_byte_order.c
+ pcre16_chartables.c
+ pcre16_compile.c
+ pcre16_config.c
+ pcre16_dfa_exec.c
+ pcre16_exec.c
+ pcre16_fullinfo.c
+ pcre16_get.c
+ pcre16_globals.c
+ pcre16_jit_compile.c
+ pcre16_maketables.c
+ pcre16_newline.c
+ pcre16_ord2utf16.c
+ pcre16_refcount.c
+ pcre16_string_utils.c
+ pcre16_study.c
+ pcre16_tables.c
+ pcre16_ucd.c
+ pcre16_utf16_utils.c
+ pcre16_valid_utf16.c
+ pcre16_version.c
+ pcre16_xclass.c
+)
+ENDIF(PCRE_BUILD_PCRE16)
+
+IF(PCRE_BUILD_PCRE32)
+SET(PCRE32_SOURCES
+ pcre32_byte_order.c
+ pcre32_chartables.c
+ pcre32_compile.c
+ pcre32_config.c
+ pcre32_dfa_exec.c
+ pcre32_exec.c
+ pcre32_fullinfo.c
+ pcre32_get.c
+ pcre32_globals.c
+ pcre32_jit_compile.c
+ pcre32_maketables.c
+ pcre32_newline.c
+ pcre32_ord2utf32.c
+ pcre32_refcount.c
+ pcre32_string_utils.c
+ pcre32_study.c
+ pcre32_tables.c
+ pcre32_ucd.c
+ pcre32_utf32_utils.c
+ pcre32_valid_utf32.c
+ pcre32_version.c
+ pcre32_xclass.c
+)
+ENDIF(PCRE_BUILD_PCRE32)
+
+IF(MINGW AND NOT PCRE_STATIC)
+IF (EXISTS ${PROJECT_SOURCE_DIR}/pcre.rc)
+ADD_CUSTOM_COMMAND(OUTPUT ${PROJECT_SOURCE_DIR}/pcre.o
+PRE-LINK
+COMMAND windres ARGS pcre.rc pcre.o
+WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+COMMENT Using pcre coff info in mingw build)
+SET(PCRE_SOURCES
+ ${PCRE_SOURCES} ${PROJECT_SOURCE_DIR}/pcre.o
+)
+ENDIF(EXISTS ${PROJECT_SOURCE_DIR}/pcre.rc)
+IF (EXISTS ${PROJECT_SOURCE_DIR}/pcreposix.rc)
+ADD_CUSTOM_COMMAND(OUTPUT ${PROJECT_SOURCE_DIR}/pcreposix.o
+PRE-LINK
+COMMAND windres ARGS pcreposix.rc pcreposix.o
+WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+COMMENT Using pcreposix coff info in mingw build)
+SET(PCREPOSIX_SOURCES
+ ${PCREPOSIX_SOURCES} ${PROJECT_SOURCE_DIR}/pcreposix.o
+)
+ENDIF(EXISTS ${PROJECT_SOURCE_DIR}/pcreposix.rc)
+ENDIF(MINGW AND NOT PCRE_STATIC)
+
+IF(MSVC AND NOT PCRE_STATIC)
+IF (EXISTS ${PROJECT_SOURCE_DIR}/pcre.rc)
+SET(PCRE_SOURCES
+ ${PCRE_SOURCES} pcre.rc)
+ENDIF(EXISTS ${PROJECT_SOURCE_DIR}/pcre.rc)
+IF (EXISTS ${PROJECT_SOURCE_DIR}/pcreposix.rc)
+SET(PCREPOSIX_SOURCES
+ ${PCREPOSIX_SOURCES} pcreposix.rc)
+ENDIF (EXISTS ${PROJECT_SOURCE_DIR}/pcreposix.rc)
+ENDIF(MSVC AND NOT PCRE_STATIC)
+
+# Fix static compilation with MSVC: https://bugs.exim.org/show_bug.cgi?id=1681
+# This code was taken from the CMake wiki, not from WebM.
+
+IF(MSVC AND PCRE_STATIC)
+ MESSAGE(STATUS "** MSVC and PCRE_STATIC: modifying compiler flags to use static runtime library")
+ foreach(flag_var
+ CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+ CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
+ CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
+ CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
+ string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
+ endforeach()
+ENDIF(MSVC AND PCRE_STATIC)
+
+SET(PCRECPP_HEADERS
+ pcrecpp.h
+ pcre_scanner.h
+ ${PROJECT_BINARY_DIR}/pcrecpparg.h
+ ${PROJECT_BINARY_DIR}/pcre_stringpiece.h
+)
+
+SET(PCRECPP_SOURCES
+ pcrecpp.cc
+ pcre_scanner.cc
+ pcre_stringpiece.cc
+)
+
+# Build setup
+
+ADD_DEFINITIONS(-DHAVE_CONFIG_H)
+
+IF(MSVC)
+ ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS)
+ENDIF(MSVC)
+
+SET(CMAKE_INCLUDE_CURRENT_DIR 1)
+# needed to make sure to not link debug libs
+# against release libs and vice versa
+IF(WIN32)
+ SET(CMAKE_DEBUG_POSTFIX "d")
+ENDIF(WIN32)
+
+SET(targets)
+
+# Libraries
+# pcre
+IF(PCRE_BUILD_PCRE8)
+ADD_LIBRARY(pcre ${PCRE_HEADERS} ${PCRE_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+SET(targets ${targets} pcre)
+ADD_LIBRARY(pcreposix ${PCREPOSIX_HEADERS} ${PCREPOSIX_SOURCES})
+SET(targets ${targets} pcreposix)
+TARGET_LINK_LIBRARIES(pcreposix pcre)
+
+IF(MINGW AND NOT PCRE_STATIC)
+ IF(NON_STANDARD_LIB_PREFIX)
+ SET_TARGET_PROPERTIES(pcre pcreposix
+ PROPERTIES PREFIX ""
+ )
+ ENDIF(NON_STANDARD_LIB_PREFIX)
+
+ IF(NON_STANDARD_LIB_SUFFIX)
+ SET_TARGET_PROPERTIES(pcre pcreposix
+ PROPERTIES SUFFIX "-0.dll"
+ )
+ ENDIF(NON_STANDARD_LIB_SUFFIX)
+ENDIF(MINGW AND NOT PCRE_STATIC)
+
+ENDIF(PCRE_BUILD_PCRE8)
+
+IF(PCRE_BUILD_PCRE16)
+ADD_LIBRARY(pcre16 ${PCRE_HEADERS} ${PCRE16_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+SET(targets ${targets} pcre16)
+
+IF(MINGW AND NOT PCRE_STATIC)
+ IF(NON_STANDARD_LIB_PREFIX)
+ SET_TARGET_PROPERTIES(pcre16
+ PROPERTIES PREFIX ""
+ )
+ ENDIF(NON_STANDARD_LIB_PREFIX)
+
+ IF(NON_STANDARD_LIB_SUFFIX)
+ SET_TARGET_PROPERTIES(pcre16
+ PROPERTIES SUFFIX "-0.dll"
+ )
+ ENDIF(NON_STANDARD_LIB_SUFFIX)
+ENDIF(MINGW AND NOT PCRE_STATIC)
+
+ENDIF(PCRE_BUILD_PCRE16)
+
+IF(PCRE_BUILD_PCRE32)
+ADD_LIBRARY(pcre32 ${PCRE_HEADERS} ${PCRE32_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+SET(targets ${targets} pcre32)
+
+IF(MINGW AND NOT PCRE_STATIC)
+ IF(NON_STANDARD_LIB_PREFIX)
+ SET_TARGET_PROPERTIES(pcre32
+ PROPERTIES PREFIX ""
+ )
+ ENDIF(NON_STANDARD_LIB_PREFIX)
+
+ IF(NON_STANDARD_LIB_SUFFIX)
+ SET_TARGET_PROPERTIES(pcre32
+ PROPERTIES SUFFIX "-0.dll"
+ )
+ ENDIF(NON_STANDARD_LIB_SUFFIX)
+ENDIF(MINGW AND NOT PCRE_STATIC)
+
+ENDIF(PCRE_BUILD_PCRE32)
+
+# pcrecpp
+IF(PCRE_BUILD_PCRECPP)
+ADD_LIBRARY(pcrecpp ${PCRECPP_HEADERS} ${PCRECPP_SOURCES})
+SET(targets ${targets} pcrecpp)
+TARGET_LINK_LIBRARIES(pcrecpp pcre)
+
+ IF(MINGW AND NOT PCRE_STATIC)
+ IF(NON_STANDARD_LIB_PREFIX)
+ SET_TARGET_PROPERTIES(pcrecpp
+ PROPERTIES PREFIX ""
+ )
+ ENDIF(NON_STANDARD_LIB_PREFIX)
+
+ IF(NON_STANDARD_LIB_SUFFIX)
+ SET_TARGET_PROPERTIES(pcrecpp
+ PROPERTIES SUFFIX "-0.dll"
+ )
+ ENDIF(NON_STANDARD_LIB_SUFFIX)
+ ENDIF(MINGW AND NOT PCRE_STATIC)
+ENDIF(PCRE_BUILD_PCRECPP)
+
+
+# Executables
+
+# Removed by PH (2008-01-23) because pcredemo shouldn't really be built
+# automatically, and it gave trouble in some environments anyway.
+# ADD_EXECUTABLE(pcredemo pcredemo.c)
+# TARGET_LINK_LIBRARIES(pcredemo pcreposix)
+# IF(NOT BUILD_SHARED_LIBS)
+# # make sure to not use declspec(dllimport) in static mode on windows
+# SET_TARGET_PROPERTIES(pcredemo PROPERTIES COMPILE_FLAGS "-DPCRE_STATIC")
+# ENDIF(NOT BUILD_SHARED_LIBS)
+
+IF(PCRE_BUILD_PCREGREP)
+ ADD_EXECUTABLE(pcregrep pcregrep.c)
+ SET(targets ${targets} pcregrep)
+ TARGET_LINK_LIBRARIES(pcregrep pcreposix ${PCREGREP_LIBS})
+ENDIF(PCRE_BUILD_PCREGREP)
+
+# Testing
+IF(PCRE_BUILD_TESTS)
+ ENABLE_TESTING()
+
+ SET(PCRETEST_SOURCES pcretest.c)
+ IF(PCRE_BUILD_PCRE8)
+ LIST(APPEND PCRETEST_SOURCES pcre_printint.c)
+ ENDIF(PCRE_BUILD_PCRE8)
+ IF(PCRE_BUILD_PCRE16)
+ LIST(APPEND PCRETEST_SOURCES pcre16_printint.c)
+ ENDIF(PCRE_BUILD_PCRE16)
+ IF(PCRE_BUILD_PCRE32)
+ LIST(APPEND PCRETEST_SOURCES pcre32_printint.c)
+ ENDIF(PCRE_BUILD_PCRE32)
+
+ ADD_EXECUTABLE(pcretest ${PCRETEST_SOURCES})
+ SET(targets ${targets} pcretest)
+ IF(PCRE_BUILD_PCRE8)
+ LIST(APPEND PCRETEST_LIBS pcreposix pcre)
+ ENDIF(PCRE_BUILD_PCRE8)
+ IF(PCRE_BUILD_PCRE16)
+ LIST(APPEND PCRETEST_LIBS pcre16)
+ ENDIF(PCRE_BUILD_PCRE16)
+ IF(PCRE_BUILD_PCRE32)
+ LIST(APPEND PCRETEST_LIBS pcre32)
+ ENDIF(PCRE_BUILD_PCRE32)
+ TARGET_LINK_LIBRARIES(pcretest ${PCRETEST_LIBS})
+
+ IF(PCRE_SUPPORT_JIT)
+ ADD_EXECUTABLE(pcre_jit_test pcre_jit_test.c)
+ SET(targets ${targets} pcre_jit_test)
+ SET(PCRE_JIT_TEST_LIBS )
+ IF(PCRE_BUILD_PCRE8)
+ LIST(APPEND PCRE_JIT_TEST_LIBS pcre)
+ ENDIF(PCRE_BUILD_PCRE8)
+ IF(PCRE_BUILD_PCRE16)
+ LIST(APPEND PCRE_JIT_TEST_LIBS pcre16)
+ ENDIF(PCRE_BUILD_PCRE16)
+ IF(PCRE_BUILD_PCRE32)
+ LIST(APPEND PCRE_JIT_TEST_LIBS pcre32)
+ ENDIF(PCRE_BUILD_PCRE32)
+ TARGET_LINK_LIBRARIES(pcre_jit_test ${PCRE_JIT_TEST_LIBS})
+ ENDIF(PCRE_SUPPORT_JIT)
+
+ IF(PCRE_BUILD_PCRECPP)
+ ADD_EXECUTABLE(pcrecpp_unittest pcrecpp_unittest.cc)
+ SET(targets ${targets} pcrecpp_unittest)
+ TARGET_LINK_LIBRARIES(pcrecpp_unittest pcrecpp)
+ IF(MINGW AND NON_STANDARD_LIB_NAMES AND NOT PCRE_STATIC)
+ SET_TARGET_PROPERTIES(pcrecpp
+ PROPERTIES PREFIX ""
+ )
+ ENDIF(MINGW AND NON_STANDARD_LIB_NAMES AND NOT PCRE_STATIC)
+
+ ADD_EXECUTABLE(pcre_scanner_unittest pcre_scanner_unittest.cc)
+ SET(targets ${targets} pcre_scanner_unittest)
+ TARGET_LINK_LIBRARIES(pcre_scanner_unittest pcrecpp)
+
+ ADD_EXECUTABLE(pcre_stringpiece_unittest pcre_stringpiece_unittest.cc)
+ SET(targets ${targets} pcre_stringpiece_unittest)
+ TARGET_LINK_LIBRARIES(pcre_stringpiece_unittest pcrecpp)
+ ENDIF(PCRE_BUILD_PCRECPP)
+
+ # exes in Debug location tested by the RunTest shell script
+ # via "make test"
+ IF(PCRE_BUILD_PCREGREP)
+ GET_TARGET_PROPERTY(PCREGREP_EXE pcregrep DEBUG_LOCATION)
+ ENDIF(PCRE_BUILD_PCREGREP)
+
+ GET_TARGET_PROPERTY(PCRETEST_EXE pcretest DEBUG_LOCATION)
+
+# =================================================
+ # Write out a CTest configuration file
+ #
+ FILE(WRITE ${PROJECT_BINARY_DIR}/CTestCustom.ctest
+ "# This is a generated file.
+MESSAGE(\"When testing is complete, review test output in the
+\\\"${PROJECT_BINARY_DIR}/Testing/Temporary\\\" folder.\")
+MESSAGE(\" \")
+")
+
+ FILE(WRITE ${PROJECT_BINARY_DIR}/pcre_test.sh
+ "#! /bin/sh
+# This is a generated file.
+srcdir=${PROJECT_SOURCE_DIR}
+pcretest=${PCRETEST_EXE}
+. ${PROJECT_SOURCE_DIR}/RunTest
+if test \"$?\" != \"0\"; then exit 1; fi
+# End
+")
+
+ IF(UNIX)
+ ADD_TEST(pcre_test sh ${PROJECT_BINARY_DIR}/pcre_test.sh)
+ ENDIF(UNIX)
+
+ IF(PCRE_BUILD_PCREGREP)
+ FILE(WRITE ${PROJECT_BINARY_DIR}/pcre_grep_test.sh
+ "#! /bin/sh
+# This is a generated file.
+srcdir=${PROJECT_SOURCE_DIR}
+pcregrep=${PCREGREP_EXE}
+pcretest=${PCRETEST_EXE}
+. ${PROJECT_SOURCE_DIR}/RunGrepTest
+if test \"$?\" != \"0\"; then exit 1; fi
+# End
+")
+
+ IF(UNIX)
+ ADD_TEST(pcre_grep_test sh ${PROJECT_BINARY_DIR}/pcre_grep_test.sh)
+ ENDIF(UNIX)
+ ENDIF(PCRE_BUILD_PCREGREP)
+
+ IF(WIN32)
+ # Provide environment for executing the bat file version of RunTest
+ FILE(TO_NATIVE_PATH ${PROJECT_SOURCE_DIR} winsrc)
+ FILE(TO_NATIVE_PATH ${PROJECT_BINARY_DIR} winbin)
+ FILE(TO_NATIVE_PATH ${PCRETEST_EXE} winexe)
+
+ FILE(WRITE ${PROJECT_BINARY_DIR}/pcre_test.bat
+ "\@REM This is a generated file.
+\@echo off
+setlocal
+SET srcdir=\"${winsrc}\"
+SET pcretest=\"${winexe}\"
+if not [%CMAKE_CONFIG_TYPE%]==[] SET pcretest=\"${winbin}\\%CMAKE_CONFIG_TYPE%\\pcretest.exe\"
+call %srcdir%\\RunTest.Bat
+if errorlevel 1 exit /b 1
+echo RunTest.bat tests successfully completed
+")
+
+ ADD_TEST(NAME pcre_test_bat
+ COMMAND pcre_test.bat)
+ SET_TESTS_PROPERTIES(pcre_test_bat PROPERTIES
+ PASS_REGULAR_EXPRESSION "RunTest\\.bat tests successfully completed")
+
+ IF("$ENV{OSTYPE}" STREQUAL "msys")
+ # Both the sh and bat file versions of RunTest are run if make test is used
+ # in msys
+ ADD_TEST(pcre_test_sh sh.exe ${PROJECT_BINARY_DIR}/pcre_test.sh)
+ IF(PCRE_BUILD_PCREGREP)
+ ADD_TEST(pcre_grep_test sh.exe ${PROJECT_BINARY_DIR}/pcre_grep_test.sh)
+ ENDIF(PCRE_BUILD_PCREGREP)
+ ENDIF("$ENV{OSTYPE}" STREQUAL "msys")
+
+ ENDIF(WIN32)
+
+ # Changed to accommodate testing whichever location was just built
+
+ IF(PCRE_SUPPORT_JIT)
+ ADD_TEST(pcre_jit_test pcre_jit_test)
+ ENDIF(PCRE_SUPPORT_JIT)
+
+ IF(PCRE_BUILD_PCRECPP)
+ ADD_TEST(pcrecpp_test pcrecpp_unittest)
+ ADD_TEST(pcre_scanner_test pcre_scanner_unittest)
+ ADD_TEST(pcre_stringpiece_test pcre_stringpiece_unittest)
+ ENDIF(PCRE_BUILD_PCRECPP)
+
+ENDIF(PCRE_BUILD_TESTS)
+
+# Installation
+SET(CMAKE_INSTALL_ALWAYS 1)
+
+INSTALL(TARGETS ${targets}
+ RUNTIME DESTINATION bin
+ LIBRARY DESTINATION lib
+ ARCHIVE DESTINATION lib)
+
+INSTALL(FILES ${PCRE_HEADERS} ${PCREPOSIX_HEADERS} DESTINATION include)
+
+FILE(GLOB html ${PROJECT_SOURCE_DIR}/doc/html/*.html)
+FILE(GLOB man1 ${PROJECT_SOURCE_DIR}/doc/*.1)
+FILE(GLOB man3 ${PROJECT_SOURCE_DIR}/doc/*.3)
+
+IF(PCRE_BUILD_PCRECPP)
+ INSTALL(FILES ${PCRECPP_HEADERS} DESTINATION include)
+ELSE(PCRE_BUILD_PCRECPP)
+ # Remove pcrecpp.3
+ FOREACH(man ${man3})
+ GET_FILENAME_COMPONENT(man_tmp ${man} NAME)
+ IF(NOT man_tmp STREQUAL "pcrecpp.3")
+ SET(man3_new ${man3} ${man})
+ ENDIF(NOT man_tmp STREQUAL "pcrecpp.3")
+ ENDFOREACH(man ${man3})
+ SET(man3 ${man3_new})
+ENDIF(PCRE_BUILD_PCRECPP)
+
+INSTALL(FILES ${man1} DESTINATION man/man1)
+INSTALL(FILES ${man3} DESTINATION man/man3)
+INSTALL(FILES ${html} DESTINATION share/doc/pcre/html)
+
+IF(MSVC AND INSTALL_MSVC_PDB)
+ INSTALL(FILES ${PROJECT_BINARY_DIR}/pcre.pdb
+ ${PROJECT_BINARY_DIR}/pcreposix.pdb
+ DESTINATION bin
+ CONFIGURATIONS RelWithDebInfo)
+ INSTALL(FILES ${PROJECT_BINARY_DIR}/pcred.pdb
+ ${PROJECT_BINARY_DIR}/pcreposixd.pdb
+ DESTINATION bin
+ CONFIGURATIONS Debug)
+ENDIF(MSVC AND INSTALL_MSVC_PDB)
+
+# help, only for nice output
+IF(BUILD_SHARED_LIBS)
+ SET(BUILD_STATIC_LIBS OFF)
+ELSE(BUILD_SHARED_LIBS)
+ SET(BUILD_STATIC_LIBS ON)
+ENDIF(BUILD_SHARED_LIBS)
+
+IF(PCRE_SHOW_REPORT)
+ STRING(TOUPPER "${CMAKE_BUILD_TYPE}" buildtype)
+ IF (CMAKE_C_FLAGS)
+ SET(cfsp " ")
+ ENDIF(CMAKE_C_FLAGS)
+ IF (CMAKE_CXX_FLAGS)
+ SET(cxxfsp " ")
+ ENDIF(CMAKE_CXX_FLAGS)
+ MESSAGE(STATUS "")
+ MESSAGE(STATUS "")
+ MESSAGE(STATUS "PCRE configuration summary:")
+ MESSAGE(STATUS "")
+ MESSAGE(STATUS " Install prefix .................. : ${CMAKE_INSTALL_PREFIX}")
+ MESSAGE(STATUS " C compiler ...................... : ${CMAKE_C_COMPILER}")
+ MESSAGE(STATUS " C++ compiler .................... : ${CMAKE_CXX_COMPILER}")
+ MESSAGE(STATUS " C compiler flags ................ : ${CMAKE_C_FLAGS}${cfsp}${CMAKE_C_FLAGS_${buildtype}}")
+ MESSAGE(STATUS " C++ compiler flags .............. : ${CMAKE_CXX_FLAGS}${cxxfsp}${CMAKE_CXX_FLAGS_${buildtype}}")
+ MESSAGE(STATUS "")
+ MESSAGE(STATUS " Build 8 bit PCRE library ........ : ${PCRE_BUILD_PCRE8}")
+ MESSAGE(STATUS " Build 16 bit PCRE library ....... : ${PCRE_BUILD_PCRE16}")
+ MESSAGE(STATUS " Build 32 bit PCRE library ....... : ${PCRE_BUILD_PCRE32}")
+ MESSAGE(STATUS " Build C++ library ............... : ${PCRE_BUILD_PCRECPP}")
+ MESSAGE(STATUS " Enable JIT compiling support .... : ${PCRE_SUPPORT_JIT}")
+ MESSAGE(STATUS " Enable UTF support .............. : ${PCRE_SUPPORT_UTF}")
+ MESSAGE(STATUS " Unicode properties .............. : ${PCRE_SUPPORT_UNICODE_PROPERTIES}")
+ MESSAGE(STATUS " Newline char/sequence ........... : ${PCRE_NEWLINE}")
+ MESSAGE(STATUS " \\R matches only ANYCRLF ......... : ${PCRE_SUPPORT_BSR_ANYCRLF}")
+ MESSAGE(STATUS " EBCDIC coding ................... : ${PCRE_EBCDIC}")
+ MESSAGE(STATUS " EBCDIC coding with NL=0x25 ...... : ${PCRE_EBCDIC_NL25}")
+ MESSAGE(STATUS " Rebuild char tables ............. : ${PCRE_REBUILD_CHARTABLES}")
+ MESSAGE(STATUS " No stack recursion .............. : ${PCRE_NO_RECURSE}")
+ MESSAGE(STATUS " POSIX mem threshold ............. : ${PCRE_POSIX_MALLOC_THRESHOLD}")
+ MESSAGE(STATUS " Internal link size .............. : ${PCRE_LINK_SIZE}")
+ MESSAGE(STATUS " Parentheses nest limit .......... : ${PCRE_PARENS_NEST_LIMIT}")
+ MESSAGE(STATUS " Match limit ..................... : ${PCRE_MATCH_LIMIT}")
+ MESSAGE(STATUS " Match limit recursion ........... : ${PCRE_MATCH_LIMIT_RECURSION}")
+ MESSAGE(STATUS " Build shared libs ............... : ${BUILD_SHARED_LIBS}")
+ MESSAGE(STATUS " Build static libs ............... : ${BUILD_STATIC_LIBS}")
+ MESSAGE(STATUS " Build pcregrep .................. : ${PCRE_BUILD_PCREGREP}")
+ MESSAGE(STATUS " Enable JIT in pcregrep .......... : ${PCRE_SUPPORT_PCREGREP_JIT}")
+ MESSAGE(STATUS " Buffer size for pcregrep ........ : ${PCREGREP_BUFSIZE}")
+ MESSAGE(STATUS " Build tests (implies pcretest .. : ${PCRE_BUILD_TESTS}")
+ MESSAGE(STATUS " and pcregrep)")
+ IF(ZLIB_FOUND)
+ MESSAGE(STATUS " Link pcregrep with libz ......... : ${PCRE_SUPPORT_LIBZ}")
+ ELSE(ZLIB_FOUND)
+ MESSAGE(STATUS " Link pcregrep with libz ......... : Library not found" )
+ ENDIF(ZLIB_FOUND)
+ IF(BZIP2_FOUND)
+ MESSAGE(STATUS " Link pcregrep with libbz2 ....... : ${PCRE_SUPPORT_LIBBZ2}")
+ ELSE(BZIP2_FOUND)
+ MESSAGE(STATUS " Link pcregrep with libbz2 ....... : Library not found" )
+ ENDIF(BZIP2_FOUND)
+ IF(EDITLINE_FOUND)
+ MESSAGE(STATUS " Link pcretest with libeditline .. : ${PCRE_SUPPORT_LIBEDIT}")
+ ELSE(EDITLINE_FOUND)
+ MESSAGE(STATUS " Link pcretest with libeditline .. : Library not found" )
+ ENDIF(EDITLINE_FOUND)
+ IF(READLINE_FOUND)
+ MESSAGE(STATUS " Link pcretest with libreadline .. : ${PCRE_SUPPORT_LIBREADLINE}")
+ ELSE(READLINE_FOUND)
+ MESSAGE(STATUS " Link pcretest with libreadline .. : Library not found" )
+ ENDIF(READLINE_FOUND)
+ MESSAGE(STATUS " Support Valgrind .................: ${PCRE_SUPPORT_VALGRIND}")
+ MESSAGE(STATUS " Support coverage .................: ${PCRE_SUPPORT_COVERAGE}")
+
+ IF(MINGW AND NOT PCRE_STATIC)
+ MESSAGE(STATUS " Non-standard dll names (prefix) . : ${NON_STANDARD_LIB_PREFIX}")
+ MESSAGE(STATUS " Non-standard dll names (suffix) . : ${NON_STANDARD_LIB_SUFFIX}")
+ ENDIF(MINGW AND NOT PCRE_STATIC)
+
+ IF(MSVC)
+ MESSAGE(STATUS " Install MSVC .pdb files ..........: ${INSTALL_MSVC_PDB}")
+ ENDIF(MSVC)
+
+ MESSAGE(STATUS "")
+ENDIF(PCRE_SHOW_REPORT)
+
+# end CMakeLists.txt
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..58eed01
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,5 @@
+PCRE LICENCE
+
+Please see the file LICENCE in the PCRE distribution for licensing details.
+
+End
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..a34f845
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,6010 @@
+ChangeLog for PCRE
+------------------
+
+Note that the PCRE 8.xx series (PCRE1) is now in a bugfix-only state. All
+development is happening in the PCRE2 10.xx series.
+
+Version 8.39 14-June-2016
+-------------------------
+
+1. If PCRE_AUTO_CALLOUT was set on a pattern that had a (?# comment between
+ an item and its qualifier (for example, A(?#comment)?B) pcre_compile()
+ misbehaved. This bug was found by the LLVM fuzzer.
+
+2. Similar to the above, if an isolated \E was present between an item and its
+ qualifier when PCRE_AUTO_CALLOUT was set, pcre_compile() misbehaved. This
+ bug was found by the LLVM fuzzer.
+
+3. Further to 8.38/46, negated classes such as [^[:^ascii:]\d] were also not
+ working correctly in UCP mode.
+
+4. The POSIX wrapper function regexec() crashed if the option REG_STARTEND
+ was set when the pmatch argument was NULL. It now returns REG_INVARG.
+
+5. Allow for up to 32-bit numbers in the ordin() function in pcregrep.
+
+6. An empty \Q\E sequence between an item and its qualifier caused
+ pcre_compile() to misbehave when auto callouts were enabled. This bug was
+ found by the LLVM fuzzer.
+
+7. If a pattern that was compiled with PCRE_EXTENDED started with white
+ space or a #-type comment that was followed by (?-x), which turns off
+ PCRE_EXTENDED, and there was no subsequent (?x) to turn it on again,
+ pcre_compile() assumed that (?-x) applied to the whole pattern and
+ consequently mis-compiled it. This bug was found by the LLVM fuzzer.
+
+8. A call of pcre_copy_named_substring() for a named substring whose number
+ was greater than the space in the ovector could cause a crash.
+
+9. Yet another buffer overflow bug involved duplicate named groups with a
+ group that reset capture numbers (compare 8.38/7 below). Once again, I have
+ just allowed for more memory, even if not needed. (A proper fix is
+ implemented in PCRE2, but it involves a lot of refactoring.)
+
+10. pcre_get_substring_list() crashed if the use of \K in a match caused the
+ start of the match to be earlier than the end.
+
+11. Migrating appropriate PCRE2 JIT improvements to PCRE.
+
+12. A pattern such as /(?<=((?C)0))/, which has a callout inside a lookbehind
+ assertion, caused pcretest to generate incorrect output, and also to read
+ uninitialized memory (detected by ASAN or valgrind).
+
+13. A pattern that included (*ACCEPT) in the middle of a sufficiently deeply
+ nested set of parentheses of sufficient size caused an overflow of the
+ compiling workspace (which was diagnosed, but of course is not desirable).
+
+14. And yet another buffer overflow bug involving duplicate named groups, this
+ time nested, with a nested back reference. Yet again, I have just allowed
+ for more memory, because anything more needs all the refactoring that has
+ been done for PCRE2. An example pattern that provoked this bug is:
+ /((?J)(?'R'(?'R'(?'R'(?'R'(?'R'(?|(\k'R'))))))))/ and the bug was
+ registered as CVE-2016-1283.
+
+15. pcretest went into a loop if global matching was requested with an ovector
+ size less than 2. It now gives an error message. This bug was found by
+ afl-fuzz.
+
+16. An invalid pattern fragment such as (?(?C)0 was not diagnosing an error
+ ("assertion expected") when (?(?C) was not followed by an opening
+ parenthesis.
+
+17. Fixed typo ("&&" for "&") in pcre_study(). Fortunately, this could not
+ actually affect anything, by sheer luck.
+
+18. Applied Chris Wilson's patch (Bugzilla #1681) to CMakeLists.txt for MSVC
+ static compilation.
+
+19. Modified the RunTest script to incorporate a valgrind suppressions file so
+ that certain errors, provoked by the SSE2 instruction set when JIT is used,
+ are ignored.
+
+20. A racing condition is fixed in JIT reported by Mozilla.
+
+21. Minor code refactor to avoid "array subscript is below array bounds"
+ compiler warning.
+
+22. Minor code refactor to avoid "left shift of negative number" warning.
+
+23. Fix typo causing compile error when 16- or 32-bit JIT is compiled without
+ UCP support.
+
+24. Refactor to avoid compiler warnings in pcrecpp.cc.
+
+25. Refactor to fix a typo in pcre_jit_test.c
+
+26. Patch to support compiling pcrecpp.cc with Intel compiler.
+
+
+Version 8.38 23-November-2015
+-----------------------------
+
+1. If a group that contained a recursive back reference also contained a
+ forward reference subroutine call followed by a non-forward-reference
+ subroutine call, for example /.((?2)(?R)\1)()/, pcre_compile() failed to
+ compile correct code, leading to undefined behaviour or an internally
+ detected error. This bug was discovered by the LLVM fuzzer.
+
+2. Quantification of certain items (e.g. atomic back references) could cause
+ incorrect code to be compiled when recursive forward references were
+ involved. For example, in this pattern: /(?1)()((((((\1++))\x85)+)|))/.
+ This bug was discovered by the LLVM fuzzer.
+
+3. A repeated conditional group whose condition was a reference by name caused
+ a buffer overflow if there was more than one group with the given name.
+ This bug was discovered by the LLVM fuzzer.
+
+4. A recursive back reference by name within a group that had the same name as
+ another group caused a buffer overflow. For example:
+ /(?J)(?'d'(?'d'\g{d}))/. This bug was discovered by the LLVM fuzzer.
+
+5. A forward reference by name to a group whose number is the same as the
+ current group, for example in this pattern: /(?|(\k'Pm')|(?'Pm'))/, caused
+ a buffer overflow at compile time. This bug was discovered by the LLVM
+ fuzzer.
+
+6. A lookbehind assertion within a set of mutually recursive subpatterns could
+ provoke a buffer overflow. This bug was discovered by the LLVM fuzzer.
+
+7. Another buffer overflow bug involved duplicate named groups with a
+ reference between their definition, with a group that reset capture
+ numbers, for example: /(?J:(?|(?'R')(\k'R')|((?'R'))))/. This has been
+ fixed by always allowing for more memory, even if not needed. (A proper fix
+ is implemented in PCRE2, but it involves more refactoring.)
+
+8. There was no check for integer overflow in subroutine calls such as (?123).
+
+9. The table entry for \l in EBCDIC environments was incorrect, leading to its
+ being treated as a literal 'l' instead of causing an error.
+
+10. There was a buffer overflow if pcre_exec() was called with an ovector of
+ size 1. This bug was found by american fuzzy lop.
+
+11. If a non-capturing group containing a conditional group that could match
+ an empty string was repeated, it was not identified as matching an empty
+ string itself. For example: /^(?:(?(1)x|)+)+$()/.
+
+12. In an EBCDIC environment, pcretest was mishandling the escape sequences
+ \a and \e in test subject lines.
+
+13. In an EBCDIC environment, \a in a pattern was converted to the ASCII
+ instead of the EBCDIC value.
+
+14. The handling of \c in an EBCDIC environment has been revised so that it is
+ now compatible with the specification in Perl's perlebcdic page.
+
+15. The EBCDIC character 0x41 is a non-breaking space, equivalent to 0xa0 in
+ ASCII/Unicode. This has now been added to the list of characters that are
+ recognized as white space in EBCDIC.
+
+16. When PCRE was compiled without UCP support, the use of \p and \P gave an
+ error (correctly) when used outside a class, but did not give an error
+ within a class.
+
+17. \h within a class was incorrectly compiled in EBCDIC environments.
+
+18. A pattern with an unmatched closing parenthesis that contained a backward
+ assertion which itself contained a forward reference caused buffer
+ overflow. And example pattern is: /(?=di(?<=(?1))|(?=(.))))/.
+
+19. JIT should return with error when the compiled pattern requires more stack
+ space than the maximum.
+
+20. A possessively repeated conditional group that could match an empty string,
+ for example, /(?(R))*+/, was incorrectly compiled.
+
+21. Fix infinite recursion in the JIT compiler when certain patterns such as
+ /(?:|a|){100}x/ are analysed.
+
+22. Some patterns with character classes involving [: and \\ were incorrectly
+ compiled and could cause reading from uninitialized memory or an incorrect
+ error diagnosis.
+
+23. Pathological patterns containing many nested occurrences of [: caused
+ pcre_compile() to run for a very long time.
+
+24. A conditional group with only one branch has an implicit empty alternative
+ branch and must therefore be treated as potentially matching an empty
+ string.
+
+25. If (?R was followed by - or + incorrect behaviour happened instead of a
+ diagnostic.
+
+26. Arrange to give up on finding the minimum matching length for overly
+ complex patterns.
+
+27. Similar to (4) above: in a pattern with duplicated named groups and an
+ occurrence of (?| it is possible for an apparently non-recursive back
+ reference to become recursive if a later named group with the relevant
+ number is encountered. This could lead to a buffer overflow. Wen Guanxing
+ from Venustech ADLAB discovered this bug.
+
+28. If pcregrep was given the -q option with -c or -l, or when handling a
+ binary file, it incorrectly wrote output to stdout.
+
+29. The JIT compiler did not restore the control verb head in case of *THEN
+ control verbs. This issue was found by Karl Skomski with a custom LLVM
+ fuzzer.
+
+30. Error messages for syntax errors following \g and \k were giving inaccurate
+ offsets in the pattern.
+
+31. Added a check for integer overflow in conditions (?(<digits>) and
+ (?(R<digits>). This omission was discovered by Karl Skomski with the LLVM
+ fuzzer.
+
+32. Handling recursive references such as (?2) when the reference is to a group
+ later in the pattern uses code that is very hacked about and error-prone.
+ It has been re-written for PCRE2. Here in PCRE1, a check has been added to
+ give an internal error if it is obvious that compiling has gone wrong.
+
+33. The JIT compiler should not check repeats after a {0,1} repeat byte code.
+ This issue was found by Karl Skomski with a custom LLVM fuzzer.
+
+34. The JIT compiler should restore the control chain for empty possessive
+ repeats. This issue was found by Karl Skomski with a custom LLVM fuzzer.
+
+35. Match limit check added to JIT recursion. This issue was found by Karl
+ Skomski with a custom LLVM fuzzer.
+
+36. Yet another case similar to 27 above has been circumvented by an
+ unconditional allocation of extra memory. This issue is fixed "properly" in
+ PCRE2 by refactoring the way references are handled. Wen Guanxing
+ from Venustech ADLAB discovered this bug.
+
+37. Fix two assertion fails in JIT. These issues were found by Karl Skomski
+ with a custom LLVM fuzzer.
+
+38. Fixed a corner case of range optimization in JIT.
+
+39. An incorrect error "overran compiling workspace" was given if there were
+ exactly enough group forward references such that the last one extended
+ into the workspace safety margin. The next one would have expanded the
+ workspace. The test for overflow was not including the safety margin.
+
+40. A match limit issue is fixed in JIT which was found by Karl Skomski
+ with a custom LLVM fuzzer.
+
+41. Remove the use of /dev/null in testdata/testinput2, because it doesn't
+ work under Windows. (Why has it taken so long for anyone to notice?)
+
+42. In a character class such as [\W\p{Any}] where both a negative-type escape
+ ("not a word character") and a property escape were present, the property
+ escape was being ignored.
+
+43. Fix crash caused by very long (*MARK) or (*THEN) names.
+
+44. A sequence such as [[:punct:]b] that is, a POSIX character class followed
+ by a single ASCII character in a class item, was incorrectly compiled in
+ UCP mode. The POSIX class got lost, but only if the single character
+ followed it.
+
+45. [:punct:] in UCP mode was matching some characters in the range 128-255
+ that should not have been matched.
+
+46. If [:^ascii:] or [:^xdigit:] or [:^cntrl:] are present in a non-negated
+ class, all characters with code points greater than 255 are in the class.
+ When a Unicode property was also in the class (if PCRE_UCP is set, escapes
+ such as \w are turned into Unicode properties), wide characters were not
+ correctly handled, and could fail to match.
+
+
+Version 8.37 28-April-2015
+--------------------------
+
+1. When an (*ACCEPT) is triggered inside capturing parentheses, it arranges
+ for those parentheses to be closed with whatever has been captured so far.
+ However, it was failing to mark any other groups between the hightest
+ capture so far and the currrent group as "unset". Thus, the ovector for
+ those groups contained whatever was previously there. An example is the
+ pattern /(x)|((*ACCEPT))/ when matched against "abcd".
+
+2. If an assertion condition was quantified with a minimum of zero (an odd
+ thing to do, but it happened), SIGSEGV or other misbehaviour could occur.
+
+3. If a pattern in pcretest input had the P (POSIX) modifier followed by an
+ unrecognized modifier, a crash could occur.
+
+4. An attempt to do global matching in pcretest with a zero-length ovector
+ caused a crash.
+
+5. Fixed a memory leak during matching that could occur for a subpattern
+ subroutine call (recursive or otherwise) if the number of captured groups
+ that had to be saved was greater than ten.
+
+6. Catch a bad opcode during auto-possessification after compiling a bad UTF
+ string with NO_UTF_CHECK. This is a tidyup, not a bug fix, as passing bad
+ UTF with NO_UTF_CHECK is documented as having an undefined outcome.
+
+7. A UTF pattern containing a "not" match of a non-ASCII character and a
+ subroutine reference could loop at compile time. Example: /[^\xff]((?1))/.
+
+8. When a pattern is compiled, it remembers the highest back reference so that
+ when matching, if the ovector is too small, extra memory can be obtained to
+ use instead. A conditional subpattern whose condition is a check on a
+ capture having happened, such as, for example in the pattern
+ /^(?:(a)|b)(?(1)A|B)/, is another kind of back reference, but it was not
+ setting the highest backreference number. This mattered only if pcre_exec()
+ was called with an ovector that was too small to hold the capture, and there
+ was no other kind of back reference (a situation which is probably quite
+ rare). The effect of the bug was that the condition was always treated as
+ FALSE when the capture could not be consulted, leading to a incorrect
+ behaviour by pcre_exec(). This bug has been fixed.
+
+9. A reference to a duplicated named group (either a back reference or a test
+ for being set in a conditional) that occurred in a part of the pattern where
+ PCRE_DUPNAMES was not set caused the amount of memory needed for the pattern
+ to be incorrectly calculated, leading to overwriting.
+
+10. A mutually recursive set of back references such as (\2)(\1) caused a
+ segfault at study time (while trying to find the minimum matching length).
+ The infinite loop is now broken (with the minimum length unset, that is,
+ zero).
+
+11. If an assertion that was used as a condition was quantified with a minimum
+ of zero, matching went wrong. In particular, if the whole group had
+ unlimited repetition and could match an empty string, a segfault was
+ likely. The pattern (?(?=0)?)+ is an example that caused this. Perl allows
+ assertions to be quantified, but not if they are being used as conditions,
+ so the above pattern is faulted by Perl. PCRE has now been changed so that
+ it also rejects such patterns.
+
+12. A possessive capturing group such as (a)*+ with a minimum repeat of zero
+ failed to allow the zero-repeat case if pcre2_exec() was called with an
+ ovector too small to capture the group.
+
+13. Fixed two bugs in pcretest that were discovered by fuzzing and reported by
+ Red Hat Product Security:
+
+ (a) A crash if /K and /F were both set with the option to save the compiled
+ pattern.
+
+ (b) Another crash if the option to print captured substrings in a callout
+ was combined with setting a null ovector, for example \O\C+ as a subject
+ string.
+
+14. A pattern such as "((?2){0,1999}())?", which has a group containing a
+ forward reference repeated a large (but limited) number of times within a
+ repeated outer group that has a zero minimum quantifier, caused incorrect
+ code to be compiled, leading to the error "internal error:
+ previously-checked referenced subpattern not found" when an incorrect
+ memory address was read. This bug was reported as "heap overflow",
+ discovered by Kai Lu of Fortinet's FortiGuard Labs and given the CVE number
+ CVE-2015-2325.
+
+23. A pattern such as "((?+1)(\1))/" containing a forward reference subroutine
+ call within a group that also contained a recursive back reference caused
+ incorrect code to be compiled. This bug was reported as "heap overflow",
+ discovered by Kai Lu of Fortinet's FortiGuard Labs, and given the CVE
+ number CVE-2015-2326.
+
+24. Computing the size of the JIT read-only data in advance has been a source
+ of various issues, and new ones are still appear unfortunately. To fix
+ existing and future issues, size computation is eliminated from the code,
+ and replaced by on-demand memory allocation.
+
+25. A pattern such as /(?i)[A-`]/, where characters in the other case are
+ adjacent to the end of the range, and the range contained characters with
+ more than one other case, caused incorrect behaviour when compiled in UTF
+ mode. In that example, the range a-j was left out of the class.
+
+26. Fix JIT compilation of conditional blocks, which assertion
+ is converted to (*FAIL). E.g: /(?(?!))/.
+
+27. The pattern /(?(?!)^)/ caused references to random memory. This bug was
+ discovered by the LLVM fuzzer.
+
+28. The assertion (?!) is optimized to (*FAIL). This was not handled correctly
+ when this assertion was used as a condition, for example (?(?!)a|b). In
+ pcre2_match() it worked by luck; in pcre2_dfa_match() it gave an incorrect
+ error about an unsupported item.
+
+29. For some types of pattern, for example /Z*(|d*){216}/, the auto-
+ possessification code could take exponential time to complete. A recursion
+ depth limit of 1000 has been imposed to limit the resources used by this
+ optimization.
+
+30. A pattern such as /(*UTF)[\S\V\H]/, which contains a negated special class
+ such as \S in non-UCP mode, explicit wide characters (> 255) can be ignored
+ because \S ensures they are all in the class. The code for doing this was
+ interacting badly with the code for computing the amount of space needed to
+ compile the pattern, leading to a buffer overflow. This bug was discovered
+ by the LLVM fuzzer.
+
+31. A pattern such as /((?2)+)((?1))/ which has mutual recursion nested inside
+ other kinds of group caused stack overflow at compile time. This bug was
+ discovered by the LLVM fuzzer.
+
+32. A pattern such as /(?1)(?#?'){8}(a)/ which had a parenthesized comment
+ between a subroutine call and its quantifier was incorrectly compiled,
+ leading to buffer overflow or other errors. This bug was discovered by the
+ LLVM fuzzer.
+
+33. The illegal pattern /(?(?<E>.*!.*)?)/ was not being diagnosed as missing an
+ assertion after (?(. The code was failing to check the character after
+ (?(?< for the ! or = that would indicate a lookbehind assertion. This bug
+ was discovered by the LLVM fuzzer.
+
+34. A pattern such as /X((?2)()*+){2}+/ which has a possessive quantifier with
+ a fixed maximum following a group that contains a subroutine reference was
+ incorrectly compiled and could trigger buffer overflow. This bug was
+ discovered by the LLVM fuzzer.
+
+35. A mutual recursion within a lookbehind assertion such as (?<=((?2))((?1)))
+ caused a stack overflow instead of the diagnosis of a non-fixed length
+ lookbehind assertion. This bug was discovered by the LLVM fuzzer.
+
+36. The use of \K in a positive lookbehind assertion in a non-anchored pattern
+ (e.g. /(?<=\Ka)/) could make pcregrep loop.
+
+37. There was a similar problem to 36 in pcretest for global matches.
+
+38. If a greedy quantified \X was preceded by \C in UTF mode (e.g. \C\X*),
+ and a subsequent item in the pattern caused a non-match, backtracking over
+ the repeated \X did not stop, but carried on past the start of the subject,
+ causing reference to random memory and/or a segfault. There were also some
+ other cases where backtracking after \C could crash. This set of bugs was
+ discovered by the LLVM fuzzer.
+
+39. The function for finding the minimum length of a matching string could take
+ a very long time if mutual recursion was present many times in a pattern,
+ for example, /((?2){73}(?2))((?1))/. A better mutual recursion detection
+ method has been implemented. This infelicity was discovered by the LLVM
+ fuzzer.
+
+40. Static linking against the PCRE library using the pkg-config module was
+ failing on missing pthread symbols.
+
+
+Version 8.36 26-September-2014
+------------------------------
+
+1. Got rid of some compiler warnings in the C++ modules that were shown up by
+ -Wmissing-field-initializers and -Wunused-parameter.
+
+2. The tests for quantifiers being too big (greater than 65535) were being
+ applied after reading the number, and stupidly assuming that integer
+ overflow would give a negative number. The tests are now applied as the
+ numbers are read.
+
+3. Tidy code in pcre_exec.c where two branches that used to be different are
+ now the same.
+
+4. The JIT compiler did not generate match limit checks for certain
+ bracketed expressions with quantifiers. This may lead to exponential
+ backtracking, instead of returning with PCRE_ERROR_MATCHLIMIT. This
+ issue should be resolved now.
+
+5. Fixed an issue, which occures when nested alternatives are optimized
+ with table jumps.
+
+6. Inserted two casts and changed some ints to size_t in the light of some
+ reported 64-bit compiler warnings (Bugzilla 1477).
+
+7. Fixed a bug concerned with zero-minimum possessive groups that could match
+ an empty string, which sometimes were behaving incorrectly in the
+ interpreter (though correctly in the JIT matcher). This pcretest input is
+ an example:
+
+ '\A(?:[^"]++|"(?:[^"]*+|"")*+")++'
+ NON QUOTED "QUOT""ED" AFTER "NOT MATCHED
+
+ the interpreter was reporting a match of 'NON QUOTED ' only, whereas the
+ JIT matcher and Perl both matched 'NON QUOTED "QUOT""ED" AFTER '. The test
+ for an empty string was breaking the inner loop and carrying on at a lower
+ level, when possessive repeated groups should always return to a higher
+ level as they have no backtrack points in them. The empty string test now
+ occurs at the outer level.
+
+8. Fixed a bug that was incorrectly auto-possessifying \w+ in the pattern
+ ^\w+(?>\s*)(?<=\w) which caused it not to match "test test".
+
+9. Give a compile-time error for \o{} (as Perl does) and for \x{} (which Perl
+ doesn't).
+
+10. Change 8.34/15 introduced a bug that caused the amount of memory needed
+ to hold a pattern to be incorrectly computed (too small) when there were
+ named back references to duplicated names. This could cause "internal
+ error: code overflow" or "double free or corruption" or other memory
+ handling errors.
+
+11. When named subpatterns had the same prefixes, back references could be
+ confused. For example, in this pattern:
+
+ /(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l/
+
+ the reference to 'Name' was incorrectly treated as a reference to a
+ duplicate name.
+
+12. A pattern such as /^s?c/mi8 where the optional character has more than
+ one "other case" was incorrectly compiled such that it would only try to
+ match starting at "c".
+
+13. When a pattern starting with \s was studied, VT was not included in the
+ list of possible starting characters; this should have been part of the
+ 8.34/18 patch.
+
+14. If a character class started [\Qx]... where x is any character, the class
+ was incorrectly terminated at the ].
+
+15. If a pattern that started with a caseless match for a character with more
+ than one "other case" was studied, PCRE did not set up the starting code
+ unit bit map for the list of possible characters. Now it does. This is an
+ optimization improvement, not a bug fix.
+
+16. The Unicode data tables have been updated to Unicode 7.0.0.
+
+17. Fixed a number of memory leaks in pcregrep.
+
+18. Avoid a compiler warning (from some compilers) for a function call with
+ a cast that removes "const" from an lvalue by using an intermediate
+ variable (to which the compiler does not object).
+
+19. Incorrect code was compiled if a group that contained an internal recursive
+ back reference was optional (had quantifier with a minimum of zero). This
+ example compiled incorrect code: /(((a\2)|(a*)\g<-1>))*/ and other examples
+ caused segmentation faults because of stack overflows at compile time.
+
+20. A pattern such as /((?(R)a|(?1)))+/, which contains a recursion within a
+ group that is quantified with an indefinite repeat, caused a compile-time
+ loop which used up all the system stack and provoked a segmentation fault.
+ This was not the same bug as 19 above.
+
+21. Add PCRECPP_EXP_DECL declaration to operator<< in pcre_stringpiece.h.
+ Patch by Mike Frysinger.
+
+
+Version 8.35 04-April-2014
+--------------------------
+
+1. A new flag is set, when property checks are present in an XCLASS.
+ When this flag is not set, PCRE can perform certain optimizations
+ such as studying these XCLASS-es.
+
+2. The auto-possessification of character sets were improved: a normal
+ and an extended character set can be compared now. Furthermore
+ the JIT compiler optimizes more character set checks.
+
+3. Got rid of some compiler warnings for potentially uninitialized variables
+ that show up only when compiled with -O2.
+
+4. A pattern such as (?=ab\K) that uses \K in an assertion can set the start
+ of a match later then the end of the match. The pcretest program was not
+ handling the case sensibly - it was outputting from the start to the next
+ binary zero. It now reports this situation in a message, and outputs the
+ text from the end to the start.
+
+5. Fast forward search is improved in JIT. Instead of the first three
+ characters, any three characters with fixed position can be searched.
+ Search order: first, last, middle.
+
+6. Improve character range checks in JIT. Characters are read by an inprecise
+ function now, which returns with an unknown value if the character code is
+ above a certain threshold (e.g: 256). The only limitation is that the value
+ must be bigger than the threshold as well. This function is useful when
+ the characters above the threshold are handled in the same way.
+
+7. The macros whose names start with RAWUCHAR are placeholders for a future
+ mode in which only the bottom 21 bits of 32-bit data items are used. To
+ make this more memorable for those maintaining the code, the names have
+ been changed to start with UCHAR21, and an extensive comment has been added
+ to their definition.
+
+8. Add missing (new) files sljitNativeTILEGX.c and sljitNativeTILEGX-encoder.c
+ to the export list in Makefile.am (they were accidentally omitted from the
+ 8.34 tarball).
+
+9. The informational output from pcretest used the phrase "starting byte set"
+ which is inappropriate for the 16-bit and 32-bit libraries. As the output
+ for "first char" and "need char" really means "non-UTF-char", I've changed
+ "byte" to "char", and slightly reworded the output. The documentation about
+ these values has also been (I hope) clarified.
+
+10. Another JIT related optimization: use table jumps for selecting the correct
+ backtracking path, when more than four alternatives are present inside a
+ bracket.
+
+11. Empty match is not possible, when the minimum length is greater than zero,
+ and there is no \K in the pattern. JIT should avoid empty match checks in
+ such cases.
+
+12. In a caseless character class with UCP support, when a character with more
+ than one alternative case was not the first character of a range, not all
+ the alternative cases were added to the class. For example, s and \x{17f}
+ are both alternative cases for S: the class [RST] was handled correctly,
+ but [R-T] was not.
+
+13. The configure.ac file always checked for pthread support when JIT was
+ enabled. This is not used in Windows, so I have put this test inside a
+ check for the presence of windows.h (which was already tested for).
+
+14. Improve pattern prefix search by a simplified Boyer-Moore algorithm in JIT.
+ The algorithm provides a way to skip certain starting offsets, and usually
+ faster than linear prefix searches.
+
+15. Change 13 for 8.20 updated RunTest to check for the 'fr' locale as well
+ as for 'fr_FR' and 'french'. For some reason, however, it then used the
+ Windows-specific input and output files, which have 'french' screwed in.
+ So this could never have worked. One of the problems with locales is that
+ they aren't always the same. I have now updated RunTest so that it checks
+ the output of the locale test (test 3) against three different output
+ files, and it allows the test to pass if any one of them matches. With luck
+ this should make the test pass on some versions of Solaris where it was
+ failing. Because of the uncertainty, the script did not used to stop if
+ test 3 failed; it now does. If further versions of a French locale ever
+ come to light, they can now easily be added.
+
+16. If --with-pcregrep-bufsize was given a non-integer value such as "50K",
+ there was a message during ./configure, but it did not stop. This now
+ provokes an error. The invalid example in README has been corrected.
+ If a value less than the minimum is given, the minimum value has always
+ been used, but now a warning is given.
+
+17. If --enable-bsr-anycrlf was set, the special 16/32-bit test failed. This
+ was a bug in the test system, which is now fixed. Also, the list of various
+ configurations that are tested for each release did not have one with both
+ 16/32 bits and --enable-bar-anycrlf. It now does.
+
+18. pcretest was missing "-C bsr" for displaying the \R default setting.
+
+19. Little endian PowerPC systems are supported now by the JIT compiler.
+
+20. The fast forward newline mechanism could enter to an infinite loop on
+ certain invalid UTF-8 input. Although we don't support these cases
+ this issue can be fixed by a performance optimization.
+
+21. Change 33 of 8.34 is not sufficient to ensure stack safety because it does
+ not take account if existing stack usage. There is now a new global
+ variable called pcre_stack_guard that can be set to point to an external
+ function to check stack availability. It is called at the start of
+ processing every parenthesized group.
+
+22. A typo in the code meant that in ungreedy mode the max/min qualifier
+ behaved like a min-possessive qualifier, and, for example, /a{1,3}b/U did
+ not match "ab".
+
+23. When UTF was disabled, the JIT program reported some incorrect compile
+ errors. These messages are silenced now.
+
+24. Experimental support for ARM-64 and MIPS-64 has been added to the JIT
+ compiler.
+
+25. Change all the temporary files used in RunGrepTest to be different to those
+ used by RunTest so that the tests can be run simultaneously, for example by
+ "make -j check".
+
+
+Version 8.34 15-December-2013
+-----------------------------
+
+1. Add pcre[16|32]_jit_free_unused_memory to forcibly free unused JIT
+ executable memory. Patch inspired by Carsten Klein.
+
+2. ./configure --enable-coverage defined SUPPORT_GCOV in config.h, although
+ this macro is never tested and has no effect, because the work to support
+ coverage involves only compiling and linking options and special targets in
+ the Makefile. The comment in config.h implied that defining the macro would
+ enable coverage support, which is totally false. There was also support for
+ setting this macro in the CMake files (my fault, I just copied it from
+ configure). SUPPORT_GCOV has now been removed.
+
+3. Make a small performance improvement in strlen16() and strlen32() in
+ pcretest.
+
+4. Change 36 for 8.33 left some unreachable statements in pcre_exec.c,
+ detected by the Solaris compiler (gcc doesn't seem to be able to diagnose
+ these cases). There was also one in pcretest.c.
+
+5. Cleaned up a "may be uninitialized" compiler warning in pcre_exec.c.
+
+6. In UTF mode, the code for checking whether a group could match an empty
+ string (which is used for indefinitely repeated groups to allow for
+ breaking an infinite loop) was broken when the group contained a repeated
+ negated single-character class with a character that occupied more than one
+ data item and had a minimum repetition of zero (for example, [^\x{100}]* in
+ UTF-8 mode). The effect was undefined: the group might or might not be
+ deemed as matching an empty string, or the program might have crashed.
+
+7. The code for checking whether a group could match an empty string was not
+ recognizing that \h, \H, \v, \V, and \R must match a character.
+
+8. Implemented PCRE_INFO_MATCH_EMPTY, which yields 1 if the pattern can match
+ an empty string. If it can, pcretest shows this in its information output.
+
+9. Fixed two related bugs that applied to Unicode extended grapheme clusters
+ that were repeated with a maximizing qualifier (e.g. \X* or \X{2,5}) when
+ matched by pcre_exec() without using JIT:
+
+ (a) If the rest of the pattern did not match after a maximal run of
+ grapheme clusters, the code for backing up to try with fewer of them
+ did not always back up over a full grapheme when characters that do not
+ have the modifier quality were involved, e.g. Hangul syllables.
+
+ (b) If the match point in a subject started with modifier character, and
+ there was no match, the code could incorrectly back up beyond the match
+ point, and potentially beyond the first character in the subject,
+ leading to a segfault or an incorrect match result.
+
+10. A conditional group with an assertion condition could lead to PCRE
+ recording an incorrect first data item for a match if no other first data
+ item was recorded. For example, the pattern (?(?=ab)ab) recorded "a" as a
+ first data item, and therefore matched "ca" after "c" instead of at the
+ start.
+
+11. Change 40 for 8.33 (allowing pcregrep to find empty strings) showed up a
+ bug that caused the command "echo a | ./pcregrep -M '|a'" to loop.
+
+12. The source of pcregrep now includes z/OS-specific code so that it can be
+ compiled for z/OS as part of the special z/OS distribution.
+
+13. Added the -T and -TM options to pcretest.
+
+14. The code in pcre_compile.c for creating the table of named capturing groups
+ has been refactored. Instead of creating the table dynamically during the
+ actual compiling pass, the information is remembered during the pre-compile
+ pass (on the stack unless there are more than 20 named groups, in which
+ case malloc() is used) and the whole table is created before the actual
+ compile happens. This has simplified the code (it is now nearly 150 lines
+ shorter) and prepared the way for better handling of references to groups
+ with duplicate names.
+
+15. A back reference to a named subpattern when there is more than one of the
+ same name now checks them in the order in which they appear in the pattern.
+ The first one that is set is used for the reference. Previously only the
+ first one was inspected. This change makes PCRE more compatible with Perl.
+
+16. Unicode character properties were updated from Unicode 6.3.0.
+
+17. The compile-time code for auto-possessification has been refactored, based
+ on a patch by Zoltan Herczeg. It now happens after instead of during
+ compilation. The code is cleaner, and more cases are handled. The option
+ PCRE_NO_AUTO_POSSESS is added for testing purposes, and the -O and /O
+ options in pcretest are provided to set it. It can also be set by
+ (*NO_AUTO_POSSESS) at the start of a pattern.
+
+18. The character VT has been added to the default ("C" locale) set of
+ characters that match \s and are generally treated as white space,
+ following this same change in Perl 5.18. There is now no difference between
+ "Perl space" and "POSIX space". Whether VT is treated as white space in
+ other locales depends on the locale.
+
+19. The code for checking named groups as conditions, either for being set or
+ for being recursed, has been refactored (this is related to 14 and 15
+ above). Processing unduplicated named groups should now be as fast at
+ numerical groups, and processing duplicated groups should be faster than
+ before.
+
+20. Two patches to the CMake build system, by Alexander Barkov:
+
+ (1) Replace the "source" command by "." in CMakeLists.txt because
+ "source" is a bash-ism.
+
+ (2) Add missing HAVE_STDINT_H and HAVE_INTTYPES_H to config-cmake.h.in;
+ without these the CMake build does not work on Solaris.
+
+21. Perl has changed its handling of \8 and \9. If there is no previously
+ encountered capturing group of those numbers, they are treated as the
+ literal characters 8 and 9 instead of a binary zero followed by the
+ literals. PCRE now does the same.
+
+22. Following Perl, added \o{} to specify codepoints in octal, making it
+ possible to specify values greater than 0777 and also making them
+ unambiguous.
+
+23. Perl now gives an error for missing closing braces after \x{... instead of
+ treating the string as literal. PCRE now does the same.
+
+24. RunTest used to grumble if an inappropriate test was selected explicitly,
+ but just skip it when running all tests. This make it awkward to run ranges
+ of tests when one of them was inappropriate. Now it just skips any
+ inappropriate tests, as it always did when running all tests.
+
+25. If PCRE_AUTO_CALLOUT and PCRE_UCP were set for a pattern that contained
+ character types such as \d or \w, too many callouts were inserted, and the
+ data that they returned was rubbish.
+
+26. In UCP mode, \s was not matching two of the characters that Perl matches,
+ namely NEL (U+0085) and MONGOLIAN VOWEL SEPARATOR (U+180E), though they
+ were matched by \h. The code has now been refactored so that the lists of
+ the horizontal and vertical whitespace characters used for \h and \v (which
+ are defined only in one place) are now also used for \s.
+
+27. Add JIT support for the 64 bit TileGX architecture.
+ Patch by Jiong Wang (Tilera Corporation).
+
+28. Possessive quantifiers for classes (both explicit and automatically
+ generated) now use special opcodes instead of wrapping in ONCE brackets.
+
+29. Whereas an item such as A{4}+ ignored the possessivenes of the quantifier
+ (because it's meaningless), this was not happening when PCRE_CASELESS was
+ set. Not wrong, but inefficient.
+
+30. Updated perltest.pl to add /u (force Unicode mode) when /W (use Unicode
+ properties for \w, \d, etc) is present in a test regex. Otherwise if the
+ test contains no characters greater than 255, Perl doesn't realise it
+ should be using Unicode semantics.
+
+31. Upgraded the handling of the POSIX classes [:graph:], [:print:], and
+ [:punct:] when PCRE_UCP is set so as to include the same characters as Perl
+ does in Unicode mode.
+
+32. Added the "forbid" facility to pcretest so that putting tests into the
+ wrong test files can sometimes be quickly detected.
+
+33. There is now a limit (default 250) on the depth of nesting of parentheses.
+ This limit is imposed to control the amount of system stack used at compile
+ time. It can be changed at build time by --with-parens-nest-limit=xxx or
+ the equivalent in CMake.
+
+34. Character classes such as [A-\d] or [a-[:digit:]] now cause compile-time
+ errors. Perl warns for these when in warning mode, but PCRE has no facility
+ for giving warnings.
+
+35. Change 34 for 8.13 allowed quantifiers on assertions, because Perl does.
+ However, this was not working for (?!) because it is optimized to (*FAIL),
+ for which PCRE does not allow quantifiers. The optimization is now disabled
+ when a quantifier follows (?!). I can't see any use for this, but it makes
+ things uniform.
+
+36. Perl no longer allows group names to start with digits, so I have made this
+ change also in PCRE. It simplifies the code a bit.
+
+37. In extended mode, Perl ignores spaces before a + that indicates a
+ possessive quantifier. PCRE allowed a space before the quantifier, but not
+ before the possessive +. It now does.
+
+38. The use of \K (reset reported match start) within a repeated possessive
+ group such as (a\Kb)*+ was not working.
+
+40. Document that the same character tables must be used at compile time and
+ run time, and that the facility to pass tables to pcre_exec() and
+ pcre_dfa_exec() is for use only with saved/restored patterns.
+
+41. Applied Jeff Trawick's patch CMakeLists.txt, which "provides two new
+ features for Builds with MSVC:
+
+ 1. Support pcre.rc and/or pcreposix.rc (as is already done for MinGW
+ builds). The .rc files can be used to set FileDescription and many other
+ attributes.
+
+ 2. Add an option (-DINSTALL_MSVC_PDB) to enable installation of .pdb files.
+ This allows higher-level build scripts which want .pdb files to avoid
+ hard-coding the exact files needed."
+
+42. Added support for [[:<:]] and [[:>:]] as used in the BSD POSIX library to
+ mean "start of word" and "end of word", respectively, as a transition aid.
+
+43. A minimizing repeat of a class containing codepoints greater than 255 in
+ non-UTF 16-bit or 32-bit modes caused an internal error when PCRE was
+ compiled to use the heap for recursion.
+
+44. Got rid of some compiler warnings for unused variables when UTF but not UCP
+ is configured.
+
+
+Version 8.33 28-May-2013
+------------------------
+
+1. Added 'U' to some constants that are compared to unsigned integers, to
+ avoid compiler signed/unsigned warnings. Added (int) casts to unsigned
+ variables that are added to signed variables, to ensure the result is
+ signed and can be negated.
+
+2. Applied patch by Daniel Richard G for quashing MSVC warnings to the
+ CMake config files.
+
+3. Revise the creation of config.h.generic so that all boolean macros are
+ #undefined, whereas non-boolean macros are #ifndef/#endif-ed. This makes
+ overriding via -D on the command line possible.
+
+4. Changing the definition of the variable "op" in pcre_exec.c from pcre_uchar
+ to unsigned int is reported to make a quite noticeable speed difference in
+ a specific Windows environment. Testing on Linux did also appear to show
+ some benefit (and it is clearly not harmful). Also fixed the definition of
+ Xop which should be unsigned.
+
+5. Related to (4), changing the definition of the intermediate variable cc
+ in repeated character loops from pcre_uchar to pcre_uint32 also gave speed
+ improvements.
+
+6. Fix forward search in JIT when link size is 3 or greater. Also removed some
+ unnecessary spaces.
+
+7. Adjust autogen.sh and configure.ac to lose warnings given by automake 1.12
+ and later.
+
+8. Fix two buffer over read issues in 16 and 32 bit modes. Affects JIT only.
+
+9. Optimizing fast_forward_start_bits in JIT.
+
+10. Adding support for callouts in JIT, and fixing some issues revealed
+ during this work. Namely:
+
+ (a) Unoptimized capturing brackets incorrectly reset on backtrack.
+
+ (b) Minimum length was not checked before the matching is started.
+
+11. The value of capture_last that is passed to callouts was incorrect in some
+ cases when there was a capture on one path that was subsequently abandoned
+ after a backtrack. Also, the capture_last value is now reset after a
+ recursion, since all captures are also reset in this case.
+
+12. The interpreter no longer returns the "too many substrings" error in the
+ case when an overflowing capture is in a branch that is subsequently
+ abandoned after a backtrack.
+
+13. In the pathological case when an offset vector of size 2 is used, pcretest
+ now prints out the matched string after a yield of 0 or 1.
+
+14. Inlining subpatterns in recursions, when certain conditions are fulfilled.
+ Only supported by the JIT compiler at the moment.
+
+15. JIT compiler now supports 32 bit Macs thanks to Lawrence Velazquez.
+
+16. Partial matches now set offsets[2] to the "bumpalong" value, that is, the
+ offset of the starting point of the matching process, provided the offsets
+ vector is large enough.
+
+17. The \A escape now records a lookbehind value of 1, though its execution
+ does not actually inspect the previous character. This is to ensure that,
+ in partial multi-segment matching, at least one character from the old
+ segment is retained when a new segment is processed. Otherwise, if there
+ are no lookbehinds in the pattern, \A might match incorrectly at the start
+ of a new segment.
+
+18. Added some #ifdef __VMS code into pcretest.c to help VMS implementations.
+
+19. Redefined some pcre_uchar variables in pcre_exec.c as pcre_uint32; this
+ gives some modest performance improvement in 8-bit mode.
+
+20. Added the PCRE-specific property \p{Xuc} for matching characters that can
+ be expressed in certain programming languages using Universal Character
+ Names.
+
+21. Unicode validation has been updated in the light of Unicode Corrigendum #9,
+ which points out that "non characters" are not "characters that may not
+ appear in Unicode strings" but rather "characters that are reserved for
+ internal use and have only local meaning".
+
+22. When a pattern was compiled with automatic callouts (PCRE_AUTO_CALLOUT) and
+ there was a conditional group that depended on an assertion, if the
+ assertion was false, the callout that immediately followed the alternation
+ in the condition was skipped when pcre_exec() was used for matching.
+
+23. Allow an explicit callout to be inserted before an assertion that is the
+ condition for a conditional group, for compatibility with automatic
+ callouts, which always insert a callout at this point.
+
+24. In 8.31, (*COMMIT) was confined to within a recursive subpattern. Perl also
+ confines (*SKIP) and (*PRUNE) in the same way, and this has now been done.
+
+25. (*PRUNE) is now supported by the JIT compiler.
+
+26. Fix infinite loop when /(?<=(*SKIP)ac)a/ is matched against aa.
+
+27. Fix the case where there are two or more SKIPs with arguments that may be
+ ignored.
+
+28. (*SKIP) is now supported by the JIT compiler.
+
+29. (*THEN) is now supported by the JIT compiler.
+
+30. Update RunTest with additional test selector options.
+
+31. The way PCRE handles backtracking verbs has been changed in two ways.
+
+ (1) Previously, in something like (*COMMIT)(*SKIP), COMMIT would override
+ SKIP. Now, PCRE acts on whichever backtracking verb is reached first by
+ backtracking. In some cases this makes it more Perl-compatible, but Perl's
+ rather obscure rules do not always do the same thing.
+
+ (2) Previously, backtracking verbs were confined within assertions. This is
+ no longer the case for positive assertions, except for (*ACCEPT). Again,
+ this sometimes improves Perl compatibility, and sometimes does not.
+
+32. A number of tests that were in test 2 because Perl did things differently
+ have been moved to test 1, because either Perl or PCRE has changed, and
+ these tests are now compatible.
+
+32. Backtracking control verbs are now handled in the same way in JIT and
+ interpreter.
+
+33. An opening parenthesis in a MARK/PRUNE/SKIP/THEN name in a pattern that
+ contained a forward subroutine reference caused a compile error.
+
+34. Auto-detect and optimize limited repetitions in JIT.
+
+35. Implement PCRE_NEVER_UTF to lock out the use of UTF, in particular,
+ blocking (*UTF) etc.
+
+36. In the interpreter, maximizing pattern repetitions for characters and
+ character types now use tail recursion, which reduces stack usage.
+
+37. The value of the max lookbehind was not correctly preserved if a compiled
+ and saved regex was reloaded on a host of different endianness.
+
+38. Implemented (*LIMIT_MATCH) and (*LIMIT_RECURSION). As part of the extension
+ of the compiled pattern block, expand the flags field from 16 to 32 bits
+ because it was almost full.
+
+39. Try madvise first before posix_madvise.
+
+40. Change 7 for PCRE 7.9 made it impossible for pcregrep to find empty lines
+ with a pattern such as ^$. It has taken 4 years for anybody to notice! The
+ original change locked out all matches of empty strings. This has been
+ changed so that one match of an empty string per line is recognized.
+ Subsequent searches on the same line (for colouring or for --only-matching,
+ for example) do not recognize empty strings.
+
+41. Applied a user patch to fix a number of spelling mistakes in comments.
+
+42. Data lines longer than 65536 caused pcretest to crash.
+
+43. Clarified the data type for length and startoffset arguments for pcre_exec
+ and pcre_dfa_exec in the function-specific man pages, where they were
+ explicitly stated to be in bytes, never having been updated. I also added
+ some clarification to the pcreapi man page.
+
+44. A call to pcre_dfa_exec() with an output vector size less than 2 caused
+ a segmentation fault.
+
+
+Version 8.32 30-November-2012
+-----------------------------
+
+1. Improved JIT compiler optimizations for first character search and single
+ character iterators.
+
+2. Supporting IBM XL C compilers for PPC architectures in the JIT compiler.
+ Patch by Daniel Richard G.
+
+3. Single character iterator optimizations in the JIT compiler.
+
+4. Improved JIT compiler optimizations for character ranges.
+
+5. Rename the "leave" variable names to "quit" to improve WinCE compatibility.
+ Reported by Giuseppe D'Angelo.
+
+6. The PCRE_STARTLINE bit, indicating that a match can occur only at the start
+ of a line, was being set incorrectly in cases where .* appeared inside
+ atomic brackets at the start of a pattern, or where there was a subsequent
+ *PRUNE or *SKIP.
+
+7. Improved instruction cache flush for POWER/PowerPC.
+ Patch by Daniel Richard G.
+
+8. Fixed a number of issues in pcregrep, making it more compatible with GNU
+ grep:
+
+ (a) There is now no limit to the number of patterns to be matched.
+
+ (b) An error is given if a pattern is too long.
+
+ (c) Multiple uses of --exclude, --exclude-dir, --include, and --include-dir
+ are now supported.
+
+ (d) --exclude-from and --include-from (multiple use) have been added.
+
+ (e) Exclusions and inclusions now apply to all files and directories, not
+ just to those obtained from scanning a directory recursively.
+
+ (f) Multiple uses of -f and --file-list are now supported.
+
+ (g) In a Windows environment, the default for -d has been changed from
+ "read" (the GNU grep default) to "skip", because otherwise the presence
+ of a directory in the file list provokes an error.
+
+ (h) The documentation has been revised and clarified in places.
+
+9. Improve the matching speed of capturing brackets.
+
+10. Changed the meaning of \X so that it now matches a Unicode extended
+ grapheme cluster.
+
+11. Patch by Daniel Richard G to the autoconf files to add a macro for sorting
+ out POSIX threads when JIT support is configured.
+
+12. Added support for PCRE_STUDY_EXTRA_NEEDED.
+
+13. In the POSIX wrapper regcomp() function, setting re_nsub field in the preg
+ structure could go wrong in environments where size_t is not the same size
+ as int.
+
+14. Applied user-supplied patch to pcrecpp.cc to allow PCRE_NO_UTF8_CHECK to be
+ set.
+
+15. The EBCDIC support had decayed; later updates to the code had included
+ explicit references to (e.g.) \x0a instead of CHAR_LF. There has been a
+ general tidy up of EBCDIC-related issues, and the documentation was also
+ not quite right. There is now a test that can be run on ASCII systems to
+ check some of the EBCDIC-related things (but is it not a full test).
+
+16. The new PCRE_STUDY_EXTRA_NEEDED option is now used by pcregrep, resulting
+ in a small tidy to the code.
+
+17. Fix JIT tests when UTF is disabled and both 8 and 16 bit mode are enabled.
+
+18. If the --only-matching (-o) option in pcregrep is specified multiple
+ times, each one causes appropriate output. For example, -o1 -o2 outputs the
+ substrings matched by the 1st and 2nd capturing parentheses. A separating
+ string can be specified by --om-separator (default empty).
+
+19. Improving the first n character searches.
+
+20. Turn case lists for horizontal and vertical white space into macros so that
+ they are defined only once.
+
+21. This set of changes together give more compatible Unicode case-folding
+ behaviour for characters that have more than one other case when UCP
+ support is available.
+
+ (a) The Unicode property table now has offsets into a new table of sets of
+ three or more characters that are case-equivalent. The MultiStage2.py
+ script that generates these tables (the pcre_ucd.c file) now scans
+ CaseFolding.txt instead of UnicodeData.txt for character case
+ information.
+
+ (b) The code for adding characters or ranges of characters to a character
+ class has been abstracted into a generalized function that also handles
+ case-independence. In UTF-mode with UCP support, this uses the new data
+ to handle characters with more than one other case.
+
+ (c) A bug that is fixed as a result of (b) is that codepoints less than 256
+ whose other case is greater than 256 are now correctly matched
+ caselessly. Previously, the high codepoint matched the low one, but not
+ vice versa.
+
+ (d) The processing of \h, \H, \v, and \ in character classes now makes use
+ of the new class addition function, using character lists defined as
+ macros alongside the case definitions of 20 above.
+
+ (e) Caseless back references now work with characters that have more than
+ one other case.
+
+ (f) General caseless matching of characters with more than one other case
+ is supported.
+
+22. Unicode character properties were updated from Unicode 6.2.0
+
+23. Improved CMake support under Windows. Patch by Daniel Richard G.
+
+24. Add support for 32-bit character strings, and UTF-32
+
+25. Major JIT compiler update (code refactoring and bugfixing).
+ Experimental Sparc 32 support is added.
+
+26. Applied a modified version of Daniel Richard G's patch to create
+ pcre.h.generic and config.h.generic by "make" instead of in the
+ PrepareRelease script.
+
+27. Added a definition for CHAR_NULL (helpful for the z/OS port), and use it in
+ pcre_compile.c when checking for a zero character.
+
+28. Introducing a native interface for JIT. Through this interface, the compiled
+ machine code can be directly executed. The purpose of this interface is to
+ provide fast pattern matching, so several sanity checks are not performed.
+ However, feature tests are still performed. The new interface provides
+ 1.4x speedup compared to the old one.
+
+29. If pcre_exec() or pcre_dfa_exec() was called with a negative value for
+ the subject string length, the error given was PCRE_ERROR_BADOFFSET, which
+ was confusing. There is now a new error PCRE_ERROR_BADLENGTH for this case.
+
+30. In 8-bit UTF-8 mode, pcretest failed to give an error for data codepoints
+ greater than 0x7fffffff (which cannot be represented in UTF-8, even under
+ the "old" RFC 2279). Instead, it ended up passing a negative length to
+ pcre_exec().
+
+31. Add support for GCC's visibility feature to hide internal functions.
+
+32. Running "pcretest -C pcre8" or "pcretest -C pcre16" gave a spurious error
+ "unknown -C option" after outputting 0 or 1.
+
+33. There is now support for generating a code coverage report for the test
+ suite in environments where gcc is the compiler and lcov is installed. This
+ is mainly for the benefit of the developers.
+
+34. If PCRE is built with --enable-valgrind, certain memory regions are marked
+ unaddressable using valgrind annotations, allowing valgrind to detect
+ invalid memory accesses. This is mainly for the benefit of the developers.
+
+25. (*UTF) can now be used to start a pattern in any of the three libraries.
+
+26. Give configure error if --enable-cpp but no C++ compiler found.
+
+
+Version 8.31 06-July-2012
+-------------------------
+
+1. Fixing a wrong JIT test case and some compiler warnings.
+
+2. Removed a bashism from the RunTest script.
+
+3. Add a cast to pcre_exec.c to fix the warning "unary minus operator applied
+ to unsigned type, result still unsigned" that was given by an MS compiler
+ on encountering the code "-sizeof(xxx)".
+
+4. Partial matching support is added to the JIT compiler.
+
+5. Fixed several bugs concerned with partial matching of items that consist
+ of more than one character:
+
+ (a) /^(..)\1/ did not partially match "aba" because checking references was
+ done on an "all or nothing" basis. This also applied to repeated
+ references.
+
+ (b) \R did not give a hard partial match if \r was found at the end of the
+ subject.
+
+ (c) \X did not give a hard partial match after matching one or more
+ characters at the end of the subject.
+
+ (d) When newline was set to CRLF, a pattern such as /a$/ did not recognize
+ a partial match for the string "\r".
+
+ (e) When newline was set to CRLF, the metacharacter "." did not recognize
+ a partial match for a CR character at the end of the subject string.
+
+6. If JIT is requested using /S++ or -s++ (instead of just /S+ or -s+) when
+ running pcretest, the text "(JIT)" added to the output whenever JIT is
+ actually used to run the match.
+
+7. Individual JIT compile options can be set in pcretest by following -s+[+]
+ or /S+[+] with a digit between 1 and 7.
+
+8. OP_NOT now supports any UTF character not just single-byte ones.
+
+9. (*MARK) control verb is now supported by the JIT compiler.
+
+10. The command "./RunTest list" lists the available tests without actually
+ running any of them. (Because I keep forgetting what they all are.)
+
+11. Add PCRE_INFO_MAXLOOKBEHIND.
+
+12. Applied a (slightly modified) user-supplied patch that improves performance
+ when the heap is used for recursion (compiled with --disable-stack-for-
+ recursion). Instead of malloc and free for each heap frame each time a
+ logical recursion happens, frames are retained on a chain and re-used where
+ possible. This sometimes gives as much as 30% improvement.
+
+13. As documented, (*COMMIT) is now confined to within a recursive subpattern
+ call.
+
+14. As documented, (*COMMIT) is now confined to within a positive assertion.
+
+15. It is now possible to link pcretest with libedit as an alternative to
+ libreadline.
+
+16. (*COMMIT) control verb is now supported by the JIT compiler.
+
+17. The Unicode data tables have been updated to Unicode 6.1.0.
+
+18. Added --file-list option to pcregrep.
+
+19. Added binary file support to pcregrep, including the -a, --binary-files,
+ -I, and --text options.
+
+20. The madvise function is renamed for posix_madvise for QNX compatibility
+ reasons. Fixed by Giuseppe D'Angelo.
+
+21. Fixed a bug for backward assertions with REVERSE 0 in the JIT compiler.
+
+22. Changed the option for creating symbolic links for 16-bit man pages from
+ -s to -sf so that re-installing does not cause issues.
+
+23. Support PCRE_NO_START_OPTIMIZE in JIT as (*MARK) support requires it.
+
+24. Fixed a very old bug in pcretest that caused errors with restarted DFA
+ matches in certain environments (the workspace was not being correctly
+ retained). Also added to pcre_dfa_exec() a simple plausibility check on
+ some of the workspace data at the beginning of a restart.
+
+25. \s*\R was auto-possessifying the \s* when it should not, whereas \S*\R
+ was not doing so when it should - probably a typo introduced by SVN 528
+ (change 8.10/14).
+
+26. When PCRE_UCP was not set, \w+\x{c4} was incorrectly auto-possessifying the
+ \w+ when the character tables indicated that \x{c4} was a word character.
+ There were several related cases, all because the tests for doing a table
+ lookup were testing for characters less than 127 instead of 255.
+
+27. If a pattern contains capturing parentheses that are not used in a match,
+ their slots in the ovector are set to -1. For those that are higher than
+ any matched groups, this happens at the end of processing. In the case when
+ there were back references that the ovector was too small to contain
+ (causing temporary malloc'd memory to be used during matching), and the
+ highest capturing number was not used, memory off the end of the ovector
+ was incorrectly being set to -1. (It was using the size of the temporary
+ memory instead of the true size.)
+
+28. To catch bugs like 27 using valgrind, when pcretest is asked to specify an
+ ovector size, it uses memory at the end of the block that it has got.
+
+29. Check for an overlong MARK name and give an error at compile time. The
+ limit is 255 for the 8-bit library and 65535 for the 16-bit library.
+
+30. JIT compiler update.
+
+31. JIT is now supported on jailbroken iOS devices. Thanks for Ruiger
+ Rill for the patch.
+
+32. Put spaces around SLJIT_PRINT_D in the JIT compiler. Required by CXX11.
+
+33. Variable renamings in the PCRE-JIT compiler. No functionality change.
+
+34. Fixed typos in pcregrep: in two places there was SUPPORT_LIBZ2 instead of
+ SUPPORT_LIBBZ2. This caused a build problem when bzip2 but not gzip (zlib)
+ was enabled.
+
+35. Improve JIT code generation for greedy plus quantifier.
+
+36. When /((?:a?)*)*c/ or /((?>a?)*)*c/ was matched against "aac", it set group
+ 1 to "aa" instead of to an empty string. The bug affected repeated groups
+ that could potentially match an empty string.
+
+37. Optimizing single character iterators in JIT.
+
+38. Wide characters specified with \uxxxx in JavaScript mode are now subject to
+ the same checks as \x{...} characters in non-JavaScript mode. Specifically,
+ codepoints that are too big for the mode are faulted, and in a UTF mode,
+ disallowed codepoints are also faulted.
+
+39. If PCRE was compiled with UTF support, in three places in the DFA
+ matcher there was code that should only have been obeyed in UTF mode, but
+ was being obeyed unconditionally. In 8-bit mode this could cause incorrect
+ processing when bytes with values greater than 127 were present. In 16-bit
+ mode the bug would be provoked by values in the range 0xfc00 to 0xdc00. In
+ both cases the values are those that cannot be the first data item in a UTF
+ character. The three items that might have provoked this were recursions,
+ possessively repeated groups, and atomic groups.
+
+40. Ensure that libpcre is explicitly listed in the link commands for pcretest
+ and pcregrep, because some OS require shared objects to be explicitly
+ passed to ld, causing the link step to fail if they are not.
+
+41. There were two incorrect #ifdefs in pcre_study.c, meaning that, in 16-bit
+ mode, patterns that started with \h* or \R* might be incorrectly matched.
+
+
+Version 8.30 04-February-2012
+-----------------------------
+
+1. Renamed "isnumber" as "is_a_number" because in some Mac environments this
+ name is defined in ctype.h.
+
+2. Fixed a bug in fixed-length calculation for lookbehinds that would show up
+ only in quite long subpatterns.
+
+3. Removed the function pcre_info(), which has been obsolete and deprecated
+ since it was replaced by pcre_fullinfo() in February 2000.
+
+4. For a non-anchored pattern, if (*SKIP) was given with a name that did not
+ match a (*MARK), and the match failed at the start of the subject, a
+ reference to memory before the start of the subject could occur. This bug
+ was introduced by fix 17 of release 8.21.
+
+5. A reference to an unset group with zero minimum repetition was giving
+ totally wrong answers (in non-JavaScript-compatibility mode). For example,
+ /(another)?(\1?)test/ matched against "hello world test". This bug was
+ introduced in release 8.13.
+
+6. Add support for 16-bit character strings (a large amount of work involving
+ many changes and refactorings).
+
+7. RunGrepTest failed on msys because \r\n was replaced by whitespace when the
+ command "pattern=`printf 'xxx\r\njkl'`" was run. The pattern is now taken
+ from a file.
+
+8. Ovector size of 2 is also supported by JIT based pcre_exec (the ovector size
+ rounding is not applied in this particular case).
+
+9. The invalid Unicode surrogate codepoints U+D800 to U+DFFF are now rejected
+ if they appear, or are escaped, in patterns.
+
+10. Get rid of a number of -Wunused-but-set-variable warnings.
+
+11. The pattern /(?=(*:x))(q|)/ matches an empty string, and returns the mark
+ "x". The similar pattern /(?=(*:x))((*:y)q|)/ did not return a mark at all.
+ Oddly, Perl behaves the same way. PCRE has been fixed so that this pattern
+ also returns the mark "x". This bug applied to capturing parentheses,
+ non-capturing parentheses, and atomic parentheses. It also applied to some
+ assertions.
+
+12. Stephen Kelly's patch to CMakeLists.txt allows it to parse the version
+ information out of configure.ac instead of relying on pcre.h.generic, which
+ is not stored in the repository.
+
+13. Applied Dmitry V. Levin's patch for a more portable method for linking with
+ -lreadline.
+
+14. ZH added PCRE_CONFIG_JITTARGET; added its output to pcretest -C.
+
+15. Applied Graycode's patch to put the top-level frame on the stack rather
+ than the heap when not using the stack for recursion. This gives a
+ performance improvement in many cases when recursion is not deep.
+
+16. Experimental code added to "pcretest -C" to output the stack frame size.
+
+
+Version 8.21 12-Dec-2011
+------------------------
+
+1. Updating the JIT compiler.
+
+2. JIT compiler now supports OP_NCREF, OP_RREF and OP_NRREF. New test cases
+ are added as well.
+
+3. Fix cache-flush issue on PowerPC (It is still an experimental JIT port).
+ PCRE_EXTRA_TABLES is not suported by JIT, and should be checked before
+ calling _pcre_jit_exec. Some extra comments are added.
+
+4. (*MARK) settings inside atomic groups that do not contain any capturing
+ parentheses, for example, (?>a(*:m)), were not being passed out. This bug
+ was introduced by change 18 for 8.20.
+
+5. Supporting of \x, \U and \u in JavaScript compatibility mode based on the
+ ECMA-262 standard.
+
+6. Lookbehinds such as (?<=a{2}b) that contained a fixed repetition were
+ erroneously being rejected as "not fixed length" if PCRE_CASELESS was set.
+ This bug was probably introduced by change 9 of 8.13.
+
+7. While fixing 6 above, I noticed that a number of other items were being
+ incorrectly rejected as "not fixed length". This arose partly because newer
+ opcodes had not been added to the fixed-length checking code. I have (a)
+ corrected the bug and added tests for these items, and (b) arranged for an
+ error to occur if an unknown opcode is encountered while checking for fixed
+ length instead of just assuming "not fixed length". The items that were
+ rejected were: (*ACCEPT), (*COMMIT), (*FAIL), (*MARK), (*PRUNE), (*SKIP),
+ (*THEN), \h, \H, \v, \V, and single character negative classes with fixed
+ repetitions, e.g. [^a]{3}, with and without PCRE_CASELESS.
+
+8. A possessively repeated conditional subpattern such as (?(?=c)c|d)++ was
+ being incorrectly compiled and would have given unpredicatble results.
+
+9. A possessively repeated subpattern with minimum repeat count greater than
+ one behaved incorrectly. For example, (A){2,}+ behaved as if it was
+ (A)(A)++ which meant that, after a subsequent mismatch, backtracking into
+ the first (A) could occur when it should not.
+
+10. Add a cast and remove a redundant test from the code.
+
+11. JIT should use pcre_malloc/pcre_free for allocation.
+
+12. Updated pcre-config so that it no longer shows -L/usr/lib, which seems
+ best practice nowadays, and helps with cross-compiling. (If the exec_prefix
+ is anything other than /usr, -L is still shown).
+
+13. In non-UTF-8 mode, \C is now supported in lookbehinds and DFA matching.
+
+14. Perl does not support \N without a following name in a [] class; PCRE now
+ also gives an error.
+
+15. If a forward reference was repeated with an upper limit of around 2000,
+ it caused the error "internal error: overran compiling workspace". The
+ maximum number of forward references (including repeats) was limited by the
+ internal workspace, and dependent on the LINK_SIZE. The code has been
+ rewritten so that the workspace expands (via pcre_malloc) if necessary, and
+ the default depends on LINK_SIZE. There is a new upper limit (for safety)
+ of around 200,000 forward references. While doing this, I also speeded up
+ the filling in of repeated forward references.
+
+16. A repeated forward reference in a pattern such as (a)(?2){2}(.) was
+ incorrectly expecting the subject to contain another "a" after the start.
+
+17. When (*SKIP:name) is activated without a corresponding (*MARK:name) earlier
+ in the match, the SKIP should be ignored. This was not happening; instead
+ the SKIP was being treated as NOMATCH. For patterns such as
+ /A(*MARK:A)A+(*SKIP:B)Z|AAC/ this meant that the AAC branch was never
+ tested.
+
+18. The behaviour of (*MARK), (*PRUNE), and (*THEN) has been reworked and is
+ now much more compatible with Perl, in particular in cases where the result
+ is a non-match for a non-anchored pattern. For example, if
+ /b(*:m)f|a(*:n)w/ is matched against "abc", the non-match returns the name
+ "m", where previously it did not return a name. A side effect of this
+ change is that for partial matches, the last encountered mark name is
+ returned, as for non matches. A number of tests that were previously not
+ Perl-compatible have been moved into the Perl-compatible test files. The
+ refactoring has had the pleasing side effect of removing one argument from
+ the match() function, thus reducing its stack requirements.
+
+19. If the /S+ option was used in pcretest to study a pattern using JIT,
+ subsequent uses of /S (without +) incorrectly behaved like /S+.
+
+21. Retrieve executable code size support for the JIT compiler and fixing
+ some warnings.
+
+22. A caseless match of a UTF-8 character whose other case uses fewer bytes did
+ not work when the shorter character appeared right at the end of the
+ subject string.
+
+23. Added some (int) casts to non-JIT modules to reduce warnings on 64-bit
+ systems.
+
+24. Added PCRE_INFO_JITSIZE to pass on the value from (21) above, and also
+ output it when the /M option is used in pcretest.
+
+25. The CheckMan script was not being included in the distribution. Also, added
+ an explicit "perl" to run Perl scripts from the PrepareRelease script
+ because this is reportedly needed in Windows.
+
+26. If study data was being save in a file and studying had not found a set of
+ "starts with" bytes for the pattern, the data written to the file (though
+ never used) was taken from uninitialized memory and so caused valgrind to
+ complain.
+
+27. Updated RunTest.bat as provided by Sheri Pierce.
+
+28. Fixed a possible uninitialized memory bug in pcre_jit_compile.c.
+
+29. Computation of memory usage for the table of capturing group names was
+ giving an unnecessarily large value.
+
+
+Version 8.20 21-Oct-2011
+------------------------
+
+1. Change 37 of 8.13 broke patterns like [:a]...[b:] because it thought it had
+ a POSIX class. After further experiments with Perl, which convinced me that
+ Perl has bugs and confusions, a closing square bracket is no longer allowed
+ in a POSIX name. This bug also affected patterns with classes that started
+ with full stops.
+
+2. If a pattern such as /(a)b|ac/ is matched against "ac", there is no
+ captured substring, but while checking the failing first alternative,
+ substring 1 is temporarily captured. If the output vector supplied to
+ pcre_exec() was not big enough for this capture, the yield of the function
+ was still zero ("insufficient space for captured substrings"). This cannot
+ be totally fixed without adding another stack variable, which seems a lot
+ of expense for a edge case. However, I have improved the situation in cases
+ such as /(a)(b)x|abc/ matched against "abc", where the return code
+ indicates that fewer than the maximum number of slots in the ovector have
+ been set.
+
+3. Related to (2) above: when there are more back references in a pattern than
+ slots in the output vector, pcre_exec() uses temporary memory during
+ matching, and copies in the captures as far as possible afterwards. It was
+ using the entire output vector, but this conflicts with the specification
+ that only 2/3 is used for passing back captured substrings. Now it uses
+ only the first 2/3, for compatibility. This is, of course, another edge
+ case.
+
+4. Zoltan Herczeg's just-in-time compiler support has been integrated into the
+ main code base, and can be used by building with --enable-jit. When this is
+ done, pcregrep automatically uses it unless --disable-pcregrep-jit or the
+ runtime --no-jit option is given.
+
+5. When the number of matches in a pcre_dfa_exec() run exactly filled the
+ ovector, the return from the function was zero, implying that there were
+ other matches that did not fit. The correct "exactly full" value is now
+ returned.
+
+6. If a subpattern that was called recursively or as a subroutine contained
+ (*PRUNE) or any other control that caused it to give a non-standard return,
+ invalid errors such as "Error -26 (nested recursion at the same subject
+ position)" or even infinite loops could occur.
+
+7. If a pattern such as /a(*SKIP)c|b(*ACCEPT)|/ was studied, it stopped
+ computing the minimum length on reaching *ACCEPT, and so ended up with the
+ wrong value of 1 rather than 0. Further investigation indicates that
+ computing a minimum subject length in the presence of *ACCEPT is difficult
+ (think back references, subroutine calls), and so I have changed the code
+ so that no minimum is registered for a pattern that contains *ACCEPT.
+
+8. If (*THEN) was present in the first (true) branch of a conditional group,
+ it was not handled as intended. [But see 16 below.]
+
+9. Replaced RunTest.bat and CMakeLists.txt with improved versions provided by
+ Sheri Pierce.
+
+10. A pathological pattern such as /(*ACCEPT)a/ was miscompiled, thinking that
+ the first byte in a match must be "a".
+
+11. Change 17 for 8.13 increased the recursion depth for patterns like
+ /a(?:.)*?a/ drastically. I've improved things by remembering whether a
+ pattern contains any instances of (*THEN). If it does not, the old
+ optimizations are restored. It would be nice to do this on a per-group
+ basis, but at the moment that is not feasible.
+
+12. In some environments, the output of pcretest -C is CRLF terminated. This
+ broke RunTest's code that checks for the link size. A single white space
+ character after the value is now allowed for.
+
+13. RunTest now checks for the "fr" locale as well as for "fr_FR" and "french".
+ For "fr", it uses the Windows-specific input and output files.
+
+14. If (*THEN) appeared in a group that was called recursively or as a
+ subroutine, it did not work as intended. [But see next item.]
+
+15. Consider the pattern /A (B(*THEN)C) | D/ where A, B, C, and D are complex
+ pattern fragments (but not containing any | characters). If A and B are
+ matched, but there is a failure in C so that it backtracks to (*THEN), PCRE
+ was behaving differently to Perl. PCRE backtracked into A, but Perl goes to
+ D. In other words, Perl considers parentheses that do not contain any |
+ characters to be part of a surrounding alternative, whereas PCRE was
+ treading (B(*THEN)C) the same as (B(*THEN)C|(*FAIL)) -- which Perl handles
+ differently. PCRE now behaves in the same way as Perl, except in the case
+ of subroutine/recursion calls such as (?1) which have in any case always
+ been different (but PCRE had them first :-).
+
+16. Related to 15 above: Perl does not treat the | in a conditional group as
+ creating alternatives. Such a group is treated in the same way as an
+ ordinary group without any | characters when processing (*THEN). PCRE has
+ been changed to match Perl's behaviour.
+
+17. If a user had set PCREGREP_COLO(U)R to something other than 1:31, the
+ RunGrepTest script failed.
+
+18. Change 22 for version 13 caused atomic groups to use more stack. This is
+ inevitable for groups that contain captures, but it can lead to a lot of
+ stack use in large patterns. The old behaviour has been restored for atomic
+ groups that do not contain any capturing parentheses.
+
+19. If the PCRE_NO_START_OPTIMIZE option was set for pcre_compile(), it did not
+ suppress the check for a minimum subject length at run time. (If it was
+ given to pcre_exec() or pcre_dfa_exec() it did work.)
+
+20. Fixed an ASCII-dependent infelicity in pcretest that would have made it
+ fail to work when decoding hex characters in data strings in EBCDIC
+ environments.
+
+21. It appears that in at least one Mac OS environment, the isxdigit() function
+ is implemented as a macro that evaluates to its argument more than once,
+ contravening the C 90 Standard (I haven't checked a later standard). There
+ was an instance in pcretest which caused it to go wrong when processing
+ \x{...} escapes in subject strings. The has been rewritten to avoid using
+ things like p++ in the argument of isxdigit().
+
+
+Version 8.13 16-Aug-2011
+------------------------
+
+1. The Unicode data tables have been updated to Unicode 6.0.0.
+
+2. Two minor typos in pcre_internal.h have been fixed.
+
+3. Added #include <string.h> to pcre_scanner_unittest.cc, pcrecpp.cc, and
+ pcrecpp_unittest.cc. They are needed for strcmp(), memset(), and strchr()
+ in some environments (e.g. Solaris 10/SPARC using Sun Studio 12U2).
+
+4. There were a number of related bugs in the code for matching backrefences
+ caselessly in UTF-8 mode when codes for the characters concerned were
+ different numbers of bytes. For example, U+023A and U+2C65 are an upper
+ and lower case pair, using 2 and 3 bytes, respectively. The main bugs were:
+ (a) A reference to 3 copies of a 2-byte code matched only 2 of a 3-byte
+ code. (b) A reference to 2 copies of a 3-byte code would not match 2 of a
+ 2-byte code at the end of the subject (it thought there wasn't enough data
+ left).
+
+5. Comprehensive information about what went wrong is now returned by
+ pcre_exec() and pcre_dfa_exec() when the UTF-8 string check fails, as long
+ as the output vector has at least 2 elements. The offset of the start of
+ the failing character and a reason code are placed in the vector.
+
+6. When the UTF-8 string check fails for pcre_compile(), the offset that is
+ now returned is for the first byte of the failing character, instead of the
+ last byte inspected. This is an incompatible change, but I hope it is small
+ enough not to be a problem. It makes the returned offset consistent with
+ pcre_exec() and pcre_dfa_exec().
+
+7. pcretest now gives a text phrase as well as the error number when
+ pcre_exec() or pcre_dfa_exec() fails; if the error is a UTF-8 check
+ failure, the offset and reason code are output.
+
+8. When \R was used with a maximizing quantifier it failed to skip backwards
+ over a \r\n pair if the subsequent match failed. Instead, it just skipped
+ back over a single character (\n). This seems wrong (because it treated the
+ two characters as a single entity when going forwards), conflicts with the
+ documentation that \R is equivalent to (?>\r\n|\n|...etc), and makes the
+ behaviour of \R* different to (\R)*, which also seems wrong. The behaviour
+ has been changed.
+
+9. Some internal refactoring has changed the processing so that the handling
+ of the PCRE_CASELESS and PCRE_MULTILINE options is done entirely at compile
+ time (the PCRE_DOTALL option was changed this way some time ago: version
+ 7.7 change 16). This has made it possible to abolish the OP_OPT op code,
+ which was always a bit of a fudge. It also means that there is one less
+ argument for the match() function, which reduces its stack requirements
+ slightly. This change also fixes an incompatibility with Perl: the pattern
+ (?i:([^b]))(?1) should not match "ab", but previously PCRE gave a match.
+
+10. More internal refactoring has drastically reduced the number of recursive
+ calls to match() for possessively repeated groups such as (abc)++ when
+ using pcre_exec().
+
+11. While implementing 10, a number of bugs in the handling of groups were
+ discovered and fixed:
+
+ (?<=(a)+) was not diagnosed as invalid (non-fixed-length lookbehind).
+ (a|)*(?1) gave a compile-time internal error.
+ ((a|)+)+ did not notice that the outer group could match an empty string.
+ (^a|^)+ was not marked as anchored.
+ (.*a|.*)+ was not marked as matching at start or after a newline.
+
+12. Yet more internal refactoring has removed another argument from the match()
+ function. Special calls to this function are now indicated by setting a
+ value in a variable in the "match data" data block.
+
+13. Be more explicit in pcre_study() instead of relying on "default" for
+ opcodes that mean there is no starting character; this means that when new
+ ones are added and accidentally left out of pcre_study(), testing should
+ pick them up.
+
+14. The -s option of pcretest has been documented for ages as being an old
+ synonym of -m (show memory usage). I have changed it to mean "force study
+ for every regex", that is, assume /S for every regex. This is similar to -i
+ and -d etc. It's slightly incompatible, but I'm hoping nobody is still
+ using it. It makes it easier to run collections of tests with and without
+ study enabled, and thereby test pcre_study() more easily. All the standard
+ tests are now run with and without -s (but some patterns can be marked as
+ "never study" - see 20 below).
+
+15. When (*ACCEPT) was used in a subpattern that was called recursively, the
+ restoration of the capturing data to the outer values was not happening
+ correctly.
+
+16. If a recursively called subpattern ended with (*ACCEPT) and matched an
+ empty string, and PCRE_NOTEMPTY was set, pcre_exec() thought the whole
+ pattern had matched an empty string, and so incorrectly returned a no
+ match.
+
+17. There was optimizing code for the last branch of non-capturing parentheses,
+ and also for the obeyed branch of a conditional subexpression, which used
+ tail recursion to cut down on stack usage. Unfortunately, now that there is
+ the possibility of (*THEN) occurring in these branches, tail recursion is
+ no longer possible because the return has to be checked for (*THEN). These
+ two optimizations have therefore been removed. [But see 8.20/11 above.]
+
+18. If a pattern containing \R was studied, it was assumed that \R always
+ matched two bytes, thus causing the minimum subject length to be
+ incorrectly computed because \R can also match just one byte.
+
+19. If a pattern containing (*ACCEPT) was studied, the minimum subject length
+ was incorrectly computed.
+
+20. If /S is present twice on a test pattern in pcretest input, it now
+ *disables* studying, thereby overriding the use of -s on the command line
+ (see 14 above). This is necessary for one or two tests to keep the output
+ identical in both cases.
+
+21. When (*ACCEPT) was used in an assertion that matched an empty string and
+ PCRE_NOTEMPTY was set, PCRE applied the non-empty test to the assertion.
+
+22. When an atomic group that contained a capturing parenthesis was
+ successfully matched, but the branch in which it appeared failed, the
+ capturing was not being forgotten if a higher numbered group was later
+ captured. For example, /(?>(a))b|(a)c/ when matching "ac" set capturing
+ group 1 to "a", when in fact it should be unset. This applied to multi-
+ branched capturing and non-capturing groups, repeated or not, and also to
+ positive assertions (capturing in negative assertions does not happen
+ in PCRE) and also to nested atomic groups.
+
+23. Add the ++ qualifier feature to pcretest, to show the remainder of the
+ subject after a captured substring, to make it easier to tell which of a
+ number of identical substrings has been captured.
+
+24. The way atomic groups are processed by pcre_exec() has been changed so that
+ if they are repeated, backtracking one repetition now resets captured
+ values correctly. For example, if ((?>(a+)b)+aabab) is matched against
+ "aaaabaaabaabab" the value of captured group 2 is now correctly recorded as
+ "aaa". Previously, it would have been "a". As part of this code
+ refactoring, the way recursive calls are handled has also been changed.
+
+25. If an assertion condition captured any substrings, they were not passed
+ back unless some other capturing happened later. For example, if
+ (?(?=(a))a) was matched against "a", no capturing was returned.
+
+26. When studying a pattern that contained subroutine calls or assertions,
+ the code for finding the minimum length of a possible match was handling
+ direct recursions such as (xxx(?1)|yyy) but not mutual recursions (where
+ group 1 called group 2 while simultaneously a separate group 2 called group
+ 1). A stack overflow occurred in this case. I have fixed this by limiting
+ the recursion depth to 10.
+
+27. Updated RunTest.bat in the distribution to the version supplied by Tom
+ Fortmann. This supports explicit test numbers on the command line, and has
+ argument validation and error reporting.
+
+28. An instance of \X with an unlimited repeat could fail if at any point the
+ first character it looked at was a mark character.
+
+29. Some minor code refactoring concerning Unicode properties and scripts
+ should reduce the stack requirement of match() slightly.
+
+30. Added the '=' option to pcretest to check the setting of unused capturing
+ slots at the end of the pattern, which are documented as being -1, but are
+ not included in the return count.
+
+31. If \k was not followed by a braced, angle-bracketed, or quoted name, PCRE
+ compiled something random. Now it gives a compile-time error (as does
+ Perl).
+
+32. A *MARK encountered during the processing of a positive assertion is now
+ recorded and passed back (compatible with Perl).
+
+33. If --only-matching or --colour was set on a pcregrep call whose pattern
+ had alternative anchored branches, the search for a second match in a line
+ was done as if at the line start. Thus, for example, /^01|^02/ incorrectly
+ matched the line "0102" twice. The same bug affected patterns that started
+ with a backwards assertion. For example /\b01|\b02/ also matched "0102"
+ twice.
+
+34. Previously, PCRE did not allow quantification of assertions. However, Perl
+ does, and because of capturing effects, quantifying parenthesized
+ assertions may at times be useful. Quantifiers are now allowed for
+ parenthesized assertions.
+
+35. A minor code tidy in pcre_compile() when checking options for \R usage.
+
+36. \g was being checked for fancy things in a character class, when it should
+ just be a literal "g".
+
+37. PCRE was rejecting [:a[:digit:]] whereas Perl was not. It seems that the
+ appearance of a nested POSIX class supersedes an apparent external class.
+ For example, [:a[:digit:]b:] matches "a", "b", ":", or a digit. Also,
+ unescaped square brackets may also appear as part of class names. For
+ example, [:a[:abc]b:] gives unknown class "[:abc]b:]". PCRE now behaves
+ more like Perl. (But see 8.20/1 above.)
+
+38. PCRE was giving an error for \N with a braced quantifier such as {1,} (this
+ was because it thought it was \N{name}, which is not supported).
+
+39. Add minix to OS list not supporting the -S option in pcretest.
+
+40. PCRE tries to detect cases of infinite recursion at compile time, but it
+ cannot analyze patterns in sufficient detail to catch mutual recursions
+ such as ((?1))((?2)). There is now a runtime test that gives an error if a
+ subgroup is called recursively as a subpattern for a second time at the
+ same position in the subject string. In previous releases this might have
+ been caught by the recursion limit, or it might have run out of stack.
+
+41. A pattern such as /(?(R)a+|(?R)b)/ is quite safe, as the recursion can
+ happen only once. PCRE was, however incorrectly giving a compile time error
+ "recursive call could loop indefinitely" because it cannot analyze the
+ pattern in sufficient detail. The compile time test no longer happens when
+ PCRE is compiling a conditional subpattern, but actual runaway loops are
+ now caught at runtime (see 40 above).
+
+42. It seems that Perl allows any characters other than a closing parenthesis
+ to be part of the NAME in (*MARK:NAME) and other backtracking verbs. PCRE
+ has been changed to be the same.
+
+43. Updated configure.ac to put in more quoting round AC_LANG_PROGRAM etc. so
+ as not to get warnings when autogen.sh is called. Also changed
+ AC_PROG_LIBTOOL (deprecated) to LT_INIT (the current macro).
+
+44. To help people who use pcregrep to scan files containing exceedingly long
+ lines, the following changes have been made:
+
+ (a) The default value of the buffer size parameter has been increased from
+ 8K to 20K. (The actual buffer used is three times this size.)
+
+ (b) The default can be changed by ./configure --with-pcregrep-bufsize when
+ PCRE is built.
+
+ (c) A --buffer-size=n option has been added to pcregrep, to allow the size
+ to be set at run time.
+
+ (d) Numerical values in pcregrep options can be followed by K or M, for
+ example --buffer-size=50K.
+
+ (e) If a line being scanned overflows pcregrep's buffer, an error is now
+ given and the return code is set to 2.
+
+45. Add a pointer to the latest mark to the callout data block.
+
+46. The pattern /.(*F)/, when applied to "abc" with PCRE_PARTIAL_HARD, gave a
+ partial match of an empty string instead of no match. This was specific to
+ the use of ".".
+
+47. The pattern /f.*/8s, when applied to "for" with PCRE_PARTIAL_HARD, gave a
+ complete match instead of a partial match. This bug was dependent on both
+ the PCRE_UTF8 and PCRE_DOTALL options being set.
+
+48. For a pattern such as /\babc|\bdef/ pcre_study() was failing to set up the
+ starting byte set, because \b was not being ignored.
+
+
+Version 8.12 15-Jan-2011
+------------------------
+
+1. Fixed some typos in the markup of the man pages, and wrote a script that
+ checks for such things as part of the documentation building process.
+
+2. On a big-endian 64-bit system, pcregrep did not correctly process the
+ --match-limit and --recursion-limit options (added for 8.11). In
+ particular, this made one of the standard tests fail. (The integer value
+ went into the wrong half of a long int.)
+
+3. If the --colour option was given to pcregrep with -v (invert match), it
+ did strange things, either producing crazy output, or crashing. It should,
+ of course, ignore a request for colour when reporting lines that do not
+ match.
+
+4. Another pcregrep bug caused similar problems if --colour was specified with
+ -M (multiline) and the pattern match finished with a line ending.
+
+5. In pcregrep, when a pattern that ended with a literal newline sequence was
+ matched in multiline mode, the following line was shown as part of the
+ match. This seems wrong, so I have changed it.
+
+6. Another pcregrep bug in multiline mode, when --colour was specified, caused
+ the check for further matches in the same line (so they could be coloured)
+ to overrun the end of the current line. If another match was found, it was
+ incorrectly shown (and then shown again when found in the next line).
+
+7. If pcregrep was compiled under Windows, there was a reference to the
+ function pcregrep_exit() before it was defined. I am assuming this was
+ the cause of the "error C2371: 'pcregrep_exit' : redefinition;" that was
+ reported by a user. I've moved the definition above the reference.
+
+
+Version 8.11 10-Dec-2010
+------------------------
+
+1. (*THEN) was not working properly if there were untried alternatives prior
+ to it in the current branch. For example, in ((a|b)(*THEN)(*F)|c..) it
+ backtracked to try for "b" instead of moving to the next alternative branch
+ at the same level (in this case, to look for "c"). The Perl documentation
+ is clear that when (*THEN) is backtracked onto, it goes to the "next
+ alternative in the innermost enclosing group".
+
+2. (*COMMIT) was not overriding (*THEN), as it does in Perl. In a pattern
+ such as (A(*COMMIT)B(*THEN)C|D) any failure after matching A should
+ result in overall failure. Similarly, (*COMMIT) now overrides (*PRUNE) and
+ (*SKIP), (*SKIP) overrides (*PRUNE) and (*THEN), and (*PRUNE) overrides
+ (*THEN).
+
+3. If \s appeared in a character class, it removed the VT character from
+ the class, even if it had been included by some previous item, for example
+ in [\x00-\xff\s]. (This was a bug related to the fact that VT is not part
+ of \s, but is part of the POSIX "space" class.)
+
+4. A partial match never returns an empty string (because you can always
+ match an empty string at the end of the subject); however the checking for
+ an empty string was starting at the "start of match" point. This has been
+ changed to the "earliest inspected character" point, because the returned
+ data for a partial match starts at this character. This means that, for
+ example, /(?<=abc)def/ gives a partial match for the subject "abc"
+ (previously it gave "no match").
+
+5. Changes have been made to the way PCRE_PARTIAL_HARD affects the matching
+ of $, \z, \Z, \b, and \B. If the match point is at the end of the string,
+ previously a full match would be given. However, setting PCRE_PARTIAL_HARD
+ has an implication that the given string is incomplete (because a partial
+ match is preferred over a full match). For this reason, these items now
+ give a partial match in this situation. [Aside: previously, the one case
+ /t\b/ matched against "cat" with PCRE_PARTIAL_HARD set did return a partial
+ match rather than a full match, which was wrong by the old rules, but is
+ now correct.]
+
+6. There was a bug in the handling of #-introduced comments, recognized when
+ PCRE_EXTENDED is set, when PCRE_NEWLINE_ANY and PCRE_UTF8 were also set.
+ If a UTF-8 multi-byte character included the byte 0x85 (e.g. +U0445, whose
+ UTF-8 encoding is 0xd1,0x85), this was misinterpreted as a newline when
+ scanning for the end of the comment. (*Character* 0x85 is an "any" newline,
+ but *byte* 0x85 is not, in UTF-8 mode). This bug was present in several
+ places in pcre_compile().
+
+7. Related to (6) above, when pcre_compile() was skipping #-introduced
+ comments when looking ahead for named forward references to subpatterns,
+ the only newline sequence it recognized was NL. It now handles newlines
+ according to the set newline convention.
+
+8. SunOS4 doesn't have strerror() or strtoul(); pcregrep dealt with the
+ former, but used strtoul(), whereas pcretest avoided strtoul() but did not
+ cater for a lack of strerror(). These oversights have been fixed.
+
+9. Added --match-limit and --recursion-limit to pcregrep.
+
+10. Added two casts needed to build with Visual Studio when NO_RECURSE is set.
+
+11. When the -o option was used, pcregrep was setting a return code of 1, even
+ when matches were found, and --line-buffered was not being honoured.
+
+12. Added an optional parentheses number to the -o and --only-matching options
+ of pcregrep.
+
+13. Imitating Perl's /g action for multiple matches is tricky when the pattern
+ can match an empty string. The code to do it in pcretest and pcredemo
+ needed fixing:
+
+ (a) When the newline convention was "crlf", pcretest got it wrong, skipping
+ only one byte after an empty string match just before CRLF (this case
+ just got forgotten; "any" and "anycrlf" were OK).
+
+ (b) The pcretest code also had a bug, causing it to loop forever in UTF-8
+ mode when an empty string match preceded an ASCII character followed by
+ a non-ASCII character. (The code for advancing by one character rather
+ than one byte was nonsense.)
+
+ (c) The pcredemo.c sample program did not have any code at all to handle
+ the cases when CRLF is a valid newline sequence.
+
+14. Neither pcre_exec() nor pcre_dfa_exec() was checking that the value given
+ as a starting offset was within the subject string. There is now a new
+ error, PCRE_ERROR_BADOFFSET, which is returned if the starting offset is
+ negative or greater than the length of the string. In order to test this,
+ pcretest is extended to allow the setting of negative starting offsets.
+
+15. In both pcre_exec() and pcre_dfa_exec() the code for checking that the
+ starting offset points to the beginning of a UTF-8 character was
+ unnecessarily clumsy. I tidied it up.
+
+16. Added PCRE_ERROR_SHORTUTF8 to make it possible to distinguish between a
+ bad UTF-8 sequence and one that is incomplete when using PCRE_PARTIAL_HARD.
+
+17. Nobody had reported that the --include_dir option, which was added in
+ release 7.7 should have been called --include-dir (hyphen, not underscore)
+ for compatibility with GNU grep. I have changed it to --include-dir, but
+ left --include_dir as an undocumented synonym, and the same for
+ --exclude-dir, though that is not available in GNU grep, at least as of
+ release 2.5.4.
+
+18. At a user's suggestion, the macros GETCHAR and friends (which pick up UTF-8
+ characters from a string of bytes) have been redefined so as not to use
+ loops, in order to improve performance in some environments. At the same
+ time, I abstracted some of the common code into auxiliary macros to save
+ repetition (this should not affect the compiled code).
+
+19. If \c was followed by a multibyte UTF-8 character, bad things happened. A
+ compile-time error is now given if \c is not followed by an ASCII
+ character, that is, a byte less than 128. (In EBCDIC mode, the code is
+ different, and any byte value is allowed.)
+
+20. Recognize (*NO_START_OPT) at the start of a pattern to set the PCRE_NO_
+ START_OPTIMIZE option, which is now allowed at compile time - but just
+ passed through to pcre_exec() or pcre_dfa_exec(). This makes it available
+ to pcregrep and other applications that have no direct access to PCRE
+ options. The new /Y option in pcretest sets this option when calling
+ pcre_compile().
+
+21. Change 18 of release 8.01 broke the use of named subpatterns for recursive
+ back references. Groups containing recursive back references were forced to
+ be atomic by that change, but in the case of named groups, the amount of
+ memory required was incorrectly computed, leading to "Failed: internal
+ error: code overflow". This has been fixed.
+
+22. Some patches to pcre_stringpiece.h, pcre_stringpiece_unittest.cc, and
+ pcretest.c, to avoid build problems in some Borland environments.
+
+
+Version 8.10 25-Jun-2010
+------------------------
+
+1. Added support for (*MARK:ARG) and for ARG additions to PRUNE, SKIP, and
+ THEN.
+
+2. (*ACCEPT) was not working when inside an atomic group.
+
+3. Inside a character class, \B is treated as a literal by default, but
+ faulted if PCRE_EXTRA is set. This mimics Perl's behaviour (the -w option
+ causes the error). The code is unchanged, but I tidied the documentation.
+
+4. Inside a character class, PCRE always treated \R and \X as literals,
+ whereas Perl faults them if its -w option is set. I have changed PCRE so
+ that it faults them when PCRE_EXTRA is set.
+
+5. Added support for \N, which always matches any character other than
+ newline. (It is the same as "." when PCRE_DOTALL is not set.)
+
+6. When compiling pcregrep with newer versions of gcc which may have
+ FORTIFY_SOURCE set, several warnings "ignoring return value of 'fwrite',
+ declared with attribute warn_unused_result" were given. Just casting the
+ result to (void) does not stop the warnings; a more elaborate fudge is
+ needed. I've used a macro to implement this.
+
+7. Minor change to pcretest.c to avoid a compiler warning.
+
+8. Added four artifical Unicode properties to help with an option to make
+ \s etc use properties (see next item). The new properties are: Xan
+ (alphanumeric), Xsp (Perl space), Xps (POSIX space), and Xwd (word).
+
+9. Added PCRE_UCP to make \b, \d, \s, \w, and certain POSIX character classes
+ use Unicode properties. (*UCP) at the start of a pattern can be used to set
+ this option. Modified pcretest to add /W to test this facility. Added
+ REG_UCP to make it available via the POSIX interface.
+
+10. Added --line-buffered to pcregrep.
+
+11. In UTF-8 mode, if a pattern that was compiled with PCRE_CASELESS was
+ studied, and the match started with a letter with a code point greater than
+ 127 whose first byte was different to the first byte of the other case of
+ the letter, the other case of this starting letter was not recognized
+ (#976).
+
+12. If a pattern that was studied started with a repeated Unicode property
+ test, for example, \p{Nd}+, there was the theoretical possibility of
+ setting up an incorrect bitmap of starting bytes, but fortunately it could
+ not have actually happened in practice until change 8 above was made (it
+ added property types that matched character-matching opcodes).
+
+13. pcre_study() now recognizes \h, \v, and \R when constructing a bit map of
+ possible starting bytes for non-anchored patterns.
+
+14. Extended the "auto-possessify" feature of pcre_compile(). It now recognizes
+ \R, and also a number of cases that involve Unicode properties, both
+ explicit and implicit when PCRE_UCP is set.
+
+15. If a repeated Unicode property match (e.g. \p{Lu}*) was used with non-UTF-8
+ input, it could crash or give wrong results if characters with values
+ greater than 0xc0 were present in the subject string. (Detail: it assumed
+ UTF-8 input when processing these items.)
+
+16. Added a lot of (int) casts to avoid compiler warnings in systems where
+ size_t is 64-bit (#991).
+
+17. Added a check for running out of memory when PCRE is compiled with
+ --disable-stack-for-recursion (#990).
+
+18. If the last data line in a file for pcretest does not have a newline on
+ the end, a newline was missing in the output.
+
+19. The default pcre_chartables.c file recognizes only ASCII characters (values
+ less than 128) in its various bitmaps. However, there is a facility for
+ generating tables according to the current locale when PCRE is compiled. It
+ turns out that in some environments, 0x85 and 0xa0, which are Unicode space
+ characters, are recognized by isspace() and therefore were getting set in
+ these tables, and indeed these tables seem to approximate to ISO 8859. This
+ caused a problem in UTF-8 mode when pcre_study() was used to create a list
+ of bytes that can start a match. For \s, it was including 0x85 and 0xa0,
+ which of course cannot start UTF-8 characters. I have changed the code so
+ that only real ASCII characters (less than 128) and the correct starting
+ bytes for UTF-8 encodings are set for characters greater than 127 when in
+ UTF-8 mode. (When PCRE_UCP is set - see 9 above - the code is different
+ altogether.)
+
+20. Added the /T option to pcretest so as to be able to run tests with non-
+ standard character tables, thus making it possible to include the tests
+ used for 19 above in the standard set of tests.
+
+21. A pattern such as (?&t)(?#()(?(DEFINE)(?<t>a)) which has a forward
+ reference to a subpattern the other side of a comment that contains an
+ opening parenthesis caused either an internal compiling error, or a
+ reference to the wrong subpattern.
+
+
+Version 8.02 19-Mar-2010
+------------------------
+
+1. The Unicode data tables have been updated to Unicode 5.2.0.
+
+2. Added the option --libs-cpp to pcre-config, but only when C++ support is
+ configured.
+
+3. Updated the licensing terms in the pcregexp.pas file, as agreed with the
+ original author of that file, following a query about its status.
+
+4. On systems that do not have stdint.h (e.g. Solaris), check for and include
+ inttypes.h instead. This fixes a bug that was introduced by change 8.01/8.
+
+5. A pattern such as (?&t)*+(?(DEFINE)(?<t>.)) which has a possessive
+ quantifier applied to a forward-referencing subroutine call, could compile
+ incorrect code or give the error "internal error: previously-checked
+ referenced subpattern not found".
+
+6. Both MS Visual Studio and Symbian OS have problems with initializing
+ variables to point to external functions. For these systems, therefore,
+ pcre_malloc etc. are now initialized to local functions that call the
+ relevant global functions.
+
+7. There were two entries missing in the vectors called coptable and poptable
+ in pcre_dfa_exec.c. This could lead to memory accesses outsize the vectors.
+ I've fixed the data, and added a kludgy way of testing at compile time that
+ the lengths are correct (equal to the number of opcodes).
+
+8. Following on from 7, I added a similar kludge to check the length of the
+ eint vector in pcreposix.c.
+
+9. Error texts for pcre_compile() are held as one long string to avoid too
+ much relocation at load time. To find a text, the string is searched,
+ counting zeros. There was no check for running off the end of the string,
+ which could happen if a new error number was added without updating the
+ string.
+
+10. \K gave a compile-time error if it appeared in a lookbehind assersion.
+
+11. \K was not working if it appeared in an atomic group or in a group that
+ was called as a "subroutine", or in an assertion. Perl 5.11 documents that
+ \K is "not well defined" if used in an assertion. PCRE now accepts it if
+ the assertion is positive, but not if it is negative.
+
+12. Change 11 fortuitously reduced the size of the stack frame used in the
+ "match()" function of pcre_exec.c by one pointer. Forthcoming
+ implementation of support for (*MARK) will need an extra pointer on the
+ stack; I have reserved it now, so that the stack frame size does not
+ decrease.
+
+13. A pattern such as (?P<L1>(?P<L2>0)|(?P>L2)(?P>L1)) in which the only other
+ item in branch that calls a recursion is a subroutine call - as in the
+ second branch in the above example - was incorrectly given the compile-
+ time error "recursive call could loop indefinitely" because pcre_compile()
+ was not correctly checking the subroutine for matching a non-empty string.
+
+14. The checks for overrunning compiling workspace could trigger after an
+ overrun had occurred. This is a "should never occur" error, but it can be
+ triggered by pathological patterns such as hundreds of nested parentheses.
+ The checks now trigger 100 bytes before the end of the workspace.
+
+15. Fix typo in configure.ac: "srtoq" should be "strtoq".
+
+
+Version 8.01 19-Jan-2010
+------------------------
+
+1. If a pattern contained a conditional subpattern with only one branch (in
+ particular, this includes all (*DEFINE) patterns), a call to pcre_study()
+ computed the wrong minimum data length (which is of course zero for such
+ subpatterns). This could cause incorrect "no match" results.
+
+2. For patterns such as (?i)a(?-i)b|c where an option setting at the start of
+ the pattern is reset in the first branch, pcre_compile() failed with
+ "internal error: code overflow at offset...". This happened only when
+ the reset was to the original external option setting. (An optimization
+ abstracts leading options settings into an external setting, which was the
+ cause of this.)
+
+3. A pattern such as ^(?!a(*SKIP)b) where a negative assertion contained one
+ of the verbs SKIP, PRUNE, or COMMIT, did not work correctly. When the
+ assertion pattern did not match (meaning that the assertion was true), it
+ was incorrectly treated as false if the SKIP had been reached during the
+ matching. This also applied to assertions used as conditions.
+
+4. If an item that is not supported by pcre_dfa_exec() was encountered in an
+ assertion subpattern, including such a pattern used as a condition,
+ unpredictable results occurred, instead of the error return
+ PCRE_ERROR_DFA_UITEM.
+
+5. The C++ GlobalReplace function was not working like Perl for the special
+ situation when an empty string is matched. It now does the fancy magic
+ stuff that is necessary.
+
+6. In pcre_internal.h, obsolete includes to setjmp.h and stdarg.h have been
+ removed. (These were left over from very, very early versions of PCRE.)
+
+7. Some cosmetic changes to the code to make life easier when compiling it
+ as part of something else:
+
+ (a) Change DEBUG to PCRE_DEBUG.
+
+ (b) In pcre_compile(), rename the member of the "branch_chain" structure
+ called "current" as "current_branch", to prevent a collision with the
+ Linux macro when compiled as a kernel module.
+
+ (c) In pcre_study(), rename the function set_bit() as set_table_bit(), to
+ prevent a collision with the Linux macro when compiled as a kernel
+ module.
+
+8. In pcre_compile() there are some checks for integer overflows that used to
+ cast potentially large values to (double). This has been changed to that
+ when building, a check for int64_t is made, and if it is found, it is used
+ instead, thus avoiding the use of floating point arithmetic. (There is no
+ other use of FP in PCRE.) If int64_t is not found, the fallback is to
+ double.
+
+9. Added two casts to avoid signed/unsigned warnings from VS Studio Express
+ 2005 (difference between two addresses compared to an unsigned value).
+
+10. Change the standard AC_CHECK_LIB test for libbz2 in configure.ac to a
+ custom one, because of the following reported problem in Windows:
+
+ - libbz2 uses the Pascal calling convention (WINAPI) for the functions
+ under Win32.
+ - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
+ therefore missing the function definition.
+ - The compiler thus generates a "C" signature for the test function.
+ - The linker fails to find the "C" function.
+ - PCRE fails to configure if asked to do so against libbz2.
+
+11. When running libtoolize from libtool-2.2.6b as part of autogen.sh, these
+ messages were output:
+
+ Consider adding `AC_CONFIG_MACRO_DIR([m4])' to configure.ac and
+ rerunning libtoolize, to keep the correct libtool macros in-tree.
+ Consider adding `-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
+
+ I have done both of these things.
+
+12. Although pcre_dfa_exec() does not use nearly as much stack as pcre_exec()
+ most of the time, it *can* run out if it is given a pattern that contains a
+ runaway infinite recursion. I updated the discussion in the pcrestack man
+ page.
+
+13. Now that we have gone to the x.xx style of version numbers, the minor
+ version may start with zero. Using 08 or 09 is a bad idea because users
+ might check the value of PCRE_MINOR in their code, and 08 or 09 may be
+ interpreted as invalid octal numbers. I've updated the previous comment in
+ configure.ac, and also added a check that gives an error if 08 or 09 are
+ used.
+
+14. Change 8.00/11 was not quite complete: code had been accidentally omitted,
+ causing partial matching to fail when the end of the subject matched \W
+ in a UTF-8 pattern where \W was quantified with a minimum of 3.
+
+15. There were some discrepancies between the declarations in pcre_internal.h
+ of _pcre_is_newline(), _pcre_was_newline(), and _pcre_valid_utf8() and
+ their definitions. The declarations used "const uschar *" and the
+ definitions used USPTR. Even though USPTR is normally defined as "const
+ unsigned char *" (and uschar is typedeffed as "unsigned char"), it was
+ reported that: "This difference in casting confuses some C++ compilers, for
+ example, SunCC recognizes above declarations as different functions and
+ generates broken code for hbpcre." I have changed the declarations to use
+ USPTR.
+
+16. GNU libtool is named differently on some systems. The autogen.sh script now
+ tries several variants such as glibtoolize (MacOSX) and libtoolize1x
+ (FreeBSD).
+
+17. Applied Craig's patch that fixes an HP aCC compile error in pcre 8.00
+ (strtoXX undefined when compiling pcrecpp.cc). The patch contains this
+ comment: "Figure out how to create a longlong from a string: strtoll and
+ equivalent. It's not enough to call AC_CHECK_FUNCS: hpux has a strtoll, for
+ instance, but it only takes 2 args instead of 3!"
+
+18. A subtle bug concerned with back references has been fixed by a change of
+ specification, with a corresponding code fix. A pattern such as
+ ^(xa|=?\1a)+$ which contains a back reference inside the group to which it
+ refers, was giving matches when it shouldn't. For example, xa=xaaa would
+ match that pattern. Interestingly, Perl (at least up to 5.11.3) has the
+ same bug. Such groups have to be quantified to be useful, or contained
+ inside another quantified group. (If there's no repetition, the reference
+ can never match.) The problem arises because, having left the group and
+ moved on to the rest of the pattern, a later failure that backtracks into
+ the group uses the captured value from the final iteration of the group
+ rather than the correct earlier one. I have fixed this in PCRE by forcing
+ any group that contains a reference to itself to be an atomic group; that
+ is, there cannot be any backtracking into it once it has completed. This is
+ similar to recursive and subroutine calls.
+
+
+Version 8.00 19-Oct-09
+----------------------
+
+1. The table for translating pcre_compile() error codes into POSIX error codes
+ was out-of-date, and there was no check on the pcre_compile() error code
+ being within the table. This could lead to an OK return being given in
+ error.
+
+2. Changed the call to open a subject file in pcregrep from fopen(pathname,
+ "r") to fopen(pathname, "rb"), which fixed a problem with some of the tests
+ in a Windows environment.
+
+3. The pcregrep --count option prints the count for each file even when it is
+ zero, as does GNU grep. However, pcregrep was also printing all files when
+ --files-with-matches was added. Now, when both options are given, it prints
+ counts only for those files that have at least one match. (GNU grep just
+ prints the file name in this circumstance, but including the count seems
+ more useful - otherwise, why use --count?) Also ensured that the
+ combination -clh just lists non-zero counts, with no names.
+
+4. The long form of the pcregrep -F option was incorrectly implemented as
+ --fixed_strings instead of --fixed-strings. This is an incompatible change,
+ but it seems right to fix it, and I didn't think it was worth preserving
+ the old behaviour.
+
+5. The command line items --regex=pattern and --regexp=pattern were not
+ recognized by pcregrep, which required --regex pattern or --regexp pattern
+ (with a space rather than an '='). The man page documented the '=' forms,
+ which are compatible with GNU grep; these now work.
+
+6. No libpcreposix.pc file was created for pkg-config; there was just
+ libpcre.pc and libpcrecpp.pc. The omission has been rectified.
+
+7. Added #ifndef SUPPORT_UCP into the pcre_ucd.c module, to reduce its size
+ when UCP support is not needed, by modifying the Python script that
+ generates it from Unicode data files. This should not matter if the module
+ is correctly used as a library, but I received one complaint about 50K of
+ unwanted data. My guess is that the person linked everything into his
+ program rather than using a library. Anyway, it does no harm.
+
+8. A pattern such as /\x{123}{2,2}+/8 was incorrectly compiled; the trigger
+ was a minimum greater than 1 for a wide character in a possessive
+ repetition. The same bug could also affect patterns like /(\x{ff}{0,2})*/8
+ which had an unlimited repeat of a nested, fixed maximum repeat of a wide
+ character. Chaos in the form of incorrect output or a compiling loop could
+ result.
+
+9. The restrictions on what a pattern can contain when partial matching is
+ requested for pcre_exec() have been removed. All patterns can now be
+ partially matched by this function. In addition, if there are at least two
+ slots in the offset vector, the offset of the earliest inspected character
+ for the match and the offset of the end of the subject are set in them when
+ PCRE_ERROR_PARTIAL is returned.
+
+10. Partial matching has been split into two forms: PCRE_PARTIAL_SOFT, which is
+ synonymous with PCRE_PARTIAL, for backwards compatibility, and
+ PCRE_PARTIAL_HARD, which causes a partial match to supersede a full match,
+ and may be more useful for multi-segment matching.
+
+11. Partial matching with pcre_exec() is now more intuitive. A partial match
+ used to be given if ever the end of the subject was reached; now it is
+ given only if matching could not proceed because another character was
+ needed. This makes a difference in some odd cases such as Z(*FAIL) with the
+ string "Z", which now yields "no match" instead of "partial match". In the
+ case of pcre_dfa_exec(), "no match" is given if every matching path for the
+ final character ended with (*FAIL).
+
+12. Restarting a match using pcre_dfa_exec() after a partial match did not work
+ if the pattern had a "must contain" character that was already found in the
+ earlier partial match, unless partial matching was again requested. For
+ example, with the pattern /dog.(body)?/, the "must contain" character is
+ "g". If the first part-match was for the string "dog", restarting with
+ "sbody" failed. This bug has been fixed.
+
+13. The string returned by pcre_dfa_exec() after a partial match has been
+ changed so that it starts at the first inspected character rather than the
+ first character of the match. This makes a difference only if the pattern
+ starts with a lookbehind assertion or \b or \B (\K is not supported by
+ pcre_dfa_exec()). It's an incompatible change, but it makes the two
+ matching functions compatible, and I think it's the right thing to do.
+
+14. Added a pcredemo man page, created automatically from the pcredemo.c file,
+ so that the demonstration program is easily available in environments where
+ PCRE has not been installed from source.
+
+15. Arranged to add -DPCRE_STATIC to cflags in libpcre.pc, libpcreposix.cp,
+ libpcrecpp.pc and pcre-config when PCRE is not compiled as a shared
+ library.
+
+16. Added REG_UNGREEDY to the pcreposix interface, at the request of a user.
+ It maps to PCRE_UNGREEDY. It is not, of course, POSIX-compatible, but it
+ is not the first non-POSIX option to be added. Clearly some people find
+ these options useful.
+
+17. If a caller to the POSIX matching function regexec() passes a non-zero
+ value for nmatch with a NULL value for pmatch, the value of
+ nmatch is forced to zero.
+
+18. RunGrepTest did not have a test for the availability of the -u option of
+ the diff command, as RunTest does. It now checks in the same way as
+ RunTest, and also checks for the -b option.
+
+19. If an odd number of negated classes containing just a single character
+ interposed, within parentheses, between a forward reference to a named
+ subpattern and the definition of the subpattern, compilation crashed with
+ an internal error, complaining that it could not find the referenced
+ subpattern. An example of a crashing pattern is /(?&A)(([^m])(?<A>))/.
+ [The bug was that it was starting one character too far in when skipping
+ over the character class, thus treating the ] as data rather than
+ terminating the class. This meant it could skip too much.]
+
+20. Added PCRE_NOTEMPTY_ATSTART in order to be able to correctly implement the
+ /g option in pcretest when the pattern contains \K, which makes it possible
+ to have an empty string match not at the start, even when the pattern is
+ anchored. Updated pcretest and pcredemo to use this option.
+
+21. If the maximum number of capturing subpatterns in a recursion was greater
+ than the maximum at the outer level, the higher number was returned, but
+ with unset values at the outer level. The correct (outer level) value is
+ now given.
+
+22. If (*ACCEPT) appeared inside capturing parentheses, previous releases of
+ PCRE did not set those parentheses (unlike Perl). I have now found a way to
+ make it do so. The string so far is captured, making this feature
+ compatible with Perl.
+
+23. The tests have been re-organized, adding tests 11 and 12, to make it
+ possible to check the Perl 5.10 features against Perl 5.10.
+
+24. Perl 5.10 allows subroutine calls in lookbehinds, as long as the subroutine
+ pattern matches a fixed length string. PCRE did not allow this; now it
+ does. Neither allows recursion.
+
+25. I finally figured out how to implement a request to provide the minimum
+ length of subject string that was needed in order to match a given pattern.
+ (It was back references and recursion that I had previously got hung up
+ on.) This code has now been added to pcre_study(); it finds a lower bound
+ to the length of subject needed. It is not necessarily the greatest lower
+ bound, but using it to avoid searching strings that are too short does give
+ some useful speed-ups. The value is available to calling programs via
+ pcre_fullinfo().
+
+26. While implementing 25, I discovered to my embarrassment that pcretest had
+ not been passing the result of pcre_study() to pcre_dfa_exec(), so the
+ study optimizations had never been tested with that matching function.
+ Oops. What is worse, even when it was passed study data, there was a bug in
+ pcre_dfa_exec() that meant it never actually used it. Double oops. There
+ were also very few tests of studied patterns with pcre_dfa_exec().
+
+27. If (?| is used to create subpatterns with duplicate numbers, they are now
+ allowed to have the same name, even if PCRE_DUPNAMES is not set. However,
+ on the other side of the coin, they are no longer allowed to have different
+ names, because these cannot be distinguished in PCRE, and this has caused
+ confusion. (This is a difference from Perl.)
+
+28. When duplicate subpattern names are present (necessarily with different
+ numbers, as required by 27 above), and a test is made by name in a
+ conditional pattern, either for a subpattern having been matched, or for
+ recursion in such a pattern, all the associated numbered subpatterns are
+ tested, and the overall condition is true if the condition is true for any
+ one of them. This is the way Perl works, and is also more like the way
+ testing by number works.
+
+
+Version 7.9 11-Apr-09
+---------------------
+
+1. When building with support for bzlib/zlib (pcregrep) and/or readline
+ (pcretest), all targets were linked against these libraries. This included
+ libpcre, libpcreposix, and libpcrecpp, even though they do not use these
+ libraries. This caused unwanted dependencies to be created. This problem
+ has been fixed, and now only pcregrep is linked with bzlib/zlib and only
+ pcretest is linked with readline.
+
+2. The "typedef int BOOL" in pcre_internal.h that was included inside the
+ "#ifndef FALSE" condition by an earlier change (probably 7.8/18) has been
+ moved outside it again, because FALSE and TRUE are already defined in AIX,
+ but BOOL is not.
+
+3. The pcre_config() function was treating the PCRE_MATCH_LIMIT and
+ PCRE_MATCH_LIMIT_RECURSION values as ints, when they should be long ints.
+
+4. The pcregrep documentation said spaces were inserted as well as colons (or
+ hyphens) following file names and line numbers when outputting matching
+ lines. This is not true; no spaces are inserted. I have also clarified the
+ wording for the --colour (or --color) option.
+
+5. In pcregrep, when --colour was used with -o, the list of matching strings
+ was not coloured; this is different to GNU grep, so I have changed it to be
+ the same.
+
+6. When --colo(u)r was used in pcregrep, only the first matching substring in
+ each matching line was coloured. Now it goes on to look for further matches
+ of any of the test patterns, which is the same behaviour as GNU grep.
+
+7. A pattern that could match an empty string could cause pcregrep to loop; it
+ doesn't make sense to accept an empty string match in pcregrep, so I have
+ locked it out (using PCRE's PCRE_NOTEMPTY option). By experiment, this
+ seems to be how GNU grep behaves. [But see later change 40 for release
+ 8.33.]
+
+8. The pattern (?(?=.*b)b|^) was incorrectly compiled as "match must be at
+ start or after a newline", because the conditional assertion was not being
+ correctly handled. The rule now is that both the assertion and what follows
+ in the first alternative must satisfy the test.
+
+9. If auto-callout was enabled in a pattern with a conditional group whose
+ condition was an assertion, PCRE could crash during matching, both with
+ pcre_exec() and pcre_dfa_exec().
+
+10. The PCRE_DOLLAR_ENDONLY option was not working when pcre_dfa_exec() was
+ used for matching.
+
+11. Unicode property support in character classes was not working for
+ characters (bytes) greater than 127 when not in UTF-8 mode.
+
+12. Added the -M command line option to pcretest.
+
+14. Added the non-standard REG_NOTEMPTY option to the POSIX interface.
+
+15. Added the PCRE_NO_START_OPTIMIZE match-time option.
+
+16. Added comments and documentation about mis-use of no_arg in the C++
+ wrapper.
+
+17. Implemented support for UTF-8 encoding in EBCDIC environments, a patch
+ from Martin Jerabek that uses macro names for all relevant character and
+ string constants.
+
+18. Added to pcre_internal.h two configuration checks: (a) If both EBCDIC and
+ SUPPORT_UTF8 are set, give an error; (b) If SUPPORT_UCP is set without
+ SUPPORT_UTF8, define SUPPORT_UTF8. The "configure" script handles both of
+ these, but not everybody uses configure.
+
+19. A conditional group that had only one branch was not being correctly
+ recognized as an item that could match an empty string. This meant that an
+ enclosing group might also not be so recognized, causing infinite looping
+ (and probably a segfault) for patterns such as ^"((?(?=[a])[^"])|b)*"$
+ with the subject "ab", where knowledge that the repeated group can match
+ nothing is needed in order to break the loop.
+
+20. If a pattern that was compiled with callouts was matched using pcre_dfa_
+ exec(), but without supplying a callout function, matching went wrong.
+
+21. If PCRE_ERROR_MATCHLIMIT occurred during a recursion, there was a memory
+ leak if the size of the offset vector was greater than 30. When the vector
+ is smaller, the saved offsets during recursion go onto a local stack
+ vector, but for larger vectors malloc() is used. It was failing to free
+ when the recursion yielded PCRE_ERROR_MATCH_LIMIT (or any other "abnormal"
+ error, in fact).
+
+22. There was a missing #ifdef SUPPORT_UTF8 round one of the variables in the
+ heapframe that is used only when UTF-8 support is enabled. This caused no
+ problem, but was untidy.
+
+23. Steven Van Ingelgem's patch to CMakeLists.txt to change the name
+ CMAKE_BINARY_DIR to PROJECT_BINARY_DIR so that it works when PCRE is
+ included within another project.
+
+24. Steven Van Ingelgem's patches to add more options to the CMake support,
+ slightly modified by me:
+
+ (a) PCRE_BUILD_TESTS can be set OFF not to build the tests, including
+ not building pcregrep.
+
+ (b) PCRE_BUILD_PCREGREP can be see OFF not to build pcregrep, but only
+ if PCRE_BUILD_TESTS is also set OFF, because the tests use pcregrep.
+
+25. Forward references, both numeric and by name, in patterns that made use of
+ duplicate group numbers, could behave incorrectly or give incorrect errors,
+ because when scanning forward to find the reference group, PCRE was not
+ taking into account the duplicate group numbers. A pattern such as
+ ^X(?3)(a)(?|(b)|(q))(Y) is an example.
+
+26. Changed a few more instances of "const unsigned char *" to USPTR, making
+ the feature of a custom pointer more persuasive (as requested by a user).
+
+27. Wrapped the definitions of fileno and isatty for Windows, which appear in
+ pcretest.c, inside #ifndefs, because it seems they are sometimes already
+ pre-defined.
+
+28. Added support for (*UTF8) at the start of a pattern.
+
+29. Arrange for flags added by the "release type" setting in CMake to be shown
+ in the configuration summary.
+
+
+Version 7.8 05-Sep-08
+---------------------
+
+1. Replaced UCP searching code with optimized version as implemented for Ad
+ Muncher (http://www.admuncher.com/) by Peter Kankowski. This uses a two-
+ stage table and inline lookup instead of a function, giving speed ups of 2
+ to 5 times on some simple patterns that I tested. Permission was given to
+ distribute the MultiStage2.py script that generates the tables (it's not in
+ the tarball, but is in the Subversion repository).
+
+2. Updated the Unicode datatables to Unicode 5.1.0. This adds yet more
+ scripts.
+
+3. Change 12 for 7.7 introduced a bug in pcre_study() when a pattern contained
+ a group with a zero qualifier. The result of the study could be incorrect,
+ or the function might crash, depending on the pattern.
+
+4. Caseless matching was not working for non-ASCII characters in back
+ references. For example, /(\x{de})\1/8i was not matching \x{de}\x{fe}.
+ It now works when Unicode Property Support is available.
+
+5. In pcretest, an escape such as \x{de} in the data was always generating
+ a UTF-8 string, even in non-UTF-8 mode. Now it generates a single byte in
+ non-UTF-8 mode. If the value is greater than 255, it gives a warning about
+ truncation.
+
+6. Minor bugfix in pcrecpp.cc (change "" == ... to NULL == ...).
+
+7. Added two (int) casts to pcregrep when printing the difference of two
+ pointers, in case they are 64-bit values.
+
+8. Added comments about Mac OS X stack usage to the pcrestack man page and to
+ test 2 if it fails.
+
+9. Added PCRE_CALL_CONVENTION just before the names of all exported functions,
+ and a #define of that name to empty if it is not externally set. This is to
+ allow users of MSVC to set it if necessary.
+
+10. The PCRE_EXP_DEFN macro which precedes exported functions was missing from
+ the convenience functions in the pcre_get.c source file.
+
+11. An option change at the start of a pattern that had top-level alternatives
+ could cause overwriting and/or a crash. This command provoked a crash in
+ some environments:
+
+ printf "/(?i)[\xc3\xa9\xc3\xbd]|[\xc3\xa9\xc3\xbdA]/8\n" | pcretest
+
+ This potential security problem was recorded as CVE-2008-2371.
+
+12. For a pattern where the match had to start at the beginning or immediately
+ after a newline (e.g /.*anything/ without the DOTALL flag), pcre_exec() and
+ pcre_dfa_exec() could read past the end of the passed subject if there was
+ no match. To help with detecting such bugs (e.g. with valgrind), I modified
+ pcretest so that it places the subject at the end of its malloc-ed buffer.
+
+13. The change to pcretest in 12 above threw up a couple more cases when pcre_
+ exec() might read past the end of the data buffer in UTF-8 mode.
+
+14. A similar bug to 7.3/2 existed when the PCRE_FIRSTLINE option was set and
+ the data contained the byte 0x85 as part of a UTF-8 character within its
+ first line. This applied both to normal and DFA matching.
+
+15. Lazy qualifiers were not working in some cases in UTF-8 mode. For example,
+ /^[^d]*?$/8 failed to match "abc".
+
+16. Added a missing copyright notice to pcrecpp_internal.h.
+
+17. Make it more clear in the documentation that values returned from
+ pcre_exec() in ovector are byte offsets, not character counts.
+
+18. Tidied a few places to stop certain compilers from issuing warnings.
+
+19. Updated the Virtual Pascal + BCC files to compile the latest v7.7, as
+ supplied by Stefan Weber. I made a further small update for 7.8 because
+ there is a change of source arrangements: the pcre_searchfuncs.c module is
+ replaced by pcre_ucd.c.
+
+
+Version 7.7 07-May-08
+---------------------
+
+1. Applied Craig's patch to sort out a long long problem: "If we can't convert
+ a string to a long long, pretend we don't even have a long long." This is
+ done by checking for the strtoq, strtoll, and _strtoi64 functions.
+
+2. Applied Craig's patch to pcrecpp.cc to restore ABI compatibility with
+ pre-7.6 versions, which defined a global no_arg variable instead of putting
+ it in the RE class. (See also #8 below.)
+
+3. Remove a line of dead code, identified by coverity and reported by Nuno
+ Lopes.
+
+4. Fixed two related pcregrep bugs involving -r with --include or --exclude:
+
+ (1) The include/exclude patterns were being applied to the whole pathnames
+ of files, instead of just to the final components.
+
+ (2) If there was more than one level of directory, the subdirectories were
+ skipped unless they satisfied the include/exclude conditions. This is
+ inconsistent with GNU grep (and could even be seen as contrary to the
+ pcregrep specification - which I improved to make it absolutely clear).
+ The action now is always to scan all levels of directory, and just
+ apply the include/exclude patterns to regular files.
+
+5. Added the --include_dir and --exclude_dir patterns to pcregrep, and used
+ --exclude_dir in the tests to avoid scanning .svn directories.
+
+6. Applied Craig's patch to the QuoteMeta function so that it escapes the
+ NUL character as backslash + 0 rather than backslash + NUL, because PCRE
+ doesn't support NULs in patterns.
+
+7. Added some missing "const"s to declarations of static tables in
+ pcre_compile.c and pcre_dfa_exec.c.
+
+8. Applied Craig's patch to pcrecpp.cc to fix a problem in OS X that was
+ caused by fix #2 above. (Subsequently also a second patch to fix the
+ first patch. And a third patch - this was a messy problem.)
+
+9. Applied Craig's patch to remove the use of push_back().
+
+10. Applied Alan Lehotsky's patch to add REG_STARTEND support to the POSIX
+ matching function regexec().
+
+11. Added support for the Oniguruma syntax \g<name>, \g<n>, \g'name', \g'n',
+ which, however, unlike Perl's \g{...}, are subroutine calls, not back
+ references. PCRE supports relative numbers with this syntax (I don't think
+ Oniguruma does).
+
+12. Previously, a group with a zero repeat such as (...){0} was completely
+ omitted from the compiled regex. However, this means that if the group
+ was called as a subroutine from elsewhere in the pattern, things went wrong
+ (an internal error was given). Such groups are now left in the compiled
+ pattern, with a new opcode that causes them to be skipped at execution
+ time.
+
+13. Added the PCRE_JAVASCRIPT_COMPAT option. This makes the following changes
+ to the way PCRE behaves:
+
+ (a) A lone ] character is dis-allowed (Perl treats it as data).
+
+ (b) A back reference to an unmatched subpattern matches an empty string
+ (Perl fails the current match path).
+
+ (c) A data ] in a character class must be notated as \] because if the
+ first data character in a class is ], it defines an empty class. (In
+ Perl it is not possible to have an empty class.) The empty class []
+ never matches; it forces failure and is equivalent to (*FAIL) or (?!).
+ The negative empty class [^] matches any one character, independently
+ of the DOTALL setting.
+
+14. A pattern such as /(?2)[]a()b](abc)/ which had a forward reference to a
+ non-existent subpattern following a character class starting with ']' and
+ containing () gave an internal compiling error instead of "reference to
+ non-existent subpattern". Fortunately, when the pattern did exist, the
+ compiled code was correct. (When scanning forwards to check for the
+ existence of the subpattern, it was treating the data ']' as terminating
+ the class, so got the count wrong. When actually compiling, the reference
+ was subsequently set up correctly.)
+
+15. The "always fail" assertion (?!) is optimzed to (*FAIL) by pcre_compile;
+ it was being rejected as not supported by pcre_dfa_exec(), even though
+ other assertions are supported. I have made pcre_dfa_exec() support
+ (*FAIL).
+
+16. The implementation of 13c above involved the invention of a new opcode,
+ OP_ALLANY, which is like OP_ANY but doesn't check the /s flag. Since /s
+ cannot be changed at match time, I realized I could make a small
+ improvement to matching performance by compiling OP_ALLANY instead of
+ OP_ANY for "." when DOTALL was set, and then removing the runtime tests
+ on the OP_ANY path.
+
+17. Compiling pcretest on Windows with readline support failed without the
+ following two fixes: (1) Make the unistd.h include conditional on
+ HAVE_UNISTD_H; (2) #define isatty and fileno as _isatty and _fileno.
+
+18. Changed CMakeLists.txt and cmake/FindReadline.cmake to arrange for the
+ ncurses library to be included for pcretest when ReadLine support is
+ requested, but also to allow for it to be overridden. This patch came from
+ Daniel Bergström.
+
+19. There was a typo in the file ucpinternal.h where f0_rangeflag was defined
+ as 0x00f00000 instead of 0x00800000. Luckily, this would not have caused
+ any errors with the current Unicode tables. Thanks to Peter Kankowski for
+ spotting this.
+
+
+Version 7.6 28-Jan-08
+---------------------
+
+1. A character class containing a very large number of characters with
+ codepoints greater than 255 (in UTF-8 mode, of course) caused a buffer
+ overflow.
+
+2. Patch to cut out the "long long" test in pcrecpp_unittest when
+ HAVE_LONG_LONG is not defined.
+
+3. Applied Christian Ehrlicher's patch to update the CMake build files to
+ bring them up to date and include new features. This patch includes:
+
+ - Fixed PH's badly added libz and libbz2 support.
+ - Fixed a problem with static linking.
+ - Added pcredemo. [But later removed - see 7 below.]
+ - Fixed dftables problem and added an option.
+ - Added a number of HAVE_XXX tests, including HAVE_WINDOWS_H and
+ HAVE_LONG_LONG.
+ - Added readline support for pcretest.
+ - Added an listing of the option settings after cmake has run.
+
+4. A user submitted a patch to Makefile that makes it easy to create
+ "pcre.dll" under mingw when using Configure/Make. I added stuff to
+ Makefile.am that cause it to include this special target, without
+ affecting anything else. Note that the same mingw target plus all
+ the other distribution libraries and programs are now supported
+ when configuring with CMake (see 6 below) instead of with
+ Configure/Make.
+
+5. Applied Craig's patch that moves no_arg into the RE class in the C++ code.
+ This is an attempt to solve the reported problem "pcrecpp::no_arg is not
+ exported in the Windows port". It has not yet been confirmed that the patch
+ solves the problem, but it does no harm.
+
+6. Applied Sheri's patch to CMakeLists.txt to add NON_STANDARD_LIB_PREFIX and
+ NON_STANDARD_LIB_SUFFIX for dll names built with mingw when configured
+ with CMake, and also correct the comment about stack recursion.
+
+7. Remove the automatic building of pcredemo from the ./configure system and
+ from CMakeLists.txt. The whole idea of pcredemo.c is that it is an example
+ of a program that users should build themselves after PCRE is installed, so
+ building it automatically is not really right. What is more, it gave
+ trouble in some build environments.
+
+8. Further tidies to CMakeLists.txt from Sheri and Christian.
+
+
+Version 7.5 10-Jan-08
+---------------------
+
+1. Applied a patch from Craig: "This patch makes it possible to 'ignore'
+ values in parens when parsing an RE using the C++ wrapper."
+
+2. Negative specials like \S did not work in character classes in UTF-8 mode.
+ Characters greater than 255 were excluded from the class instead of being
+ included.
+
+3. The same bug as (2) above applied to negated POSIX classes such as
+ [:^space:].
+
+4. PCRECPP_STATIC was referenced in pcrecpp_internal.h, but nowhere was it
+ defined or documented. It seems to have been a typo for PCRE_STATIC, so
+ I have changed it.
+
+5. The construct (?&) was not diagnosed as a syntax error (it referenced the
+ first named subpattern) and a construct such as (?&a) would reference the
+ first named subpattern whose name started with "a" (in other words, the
+ length check was missing). Both these problems are fixed. "Subpattern name
+ expected" is now given for (?&) (a zero-length name), and this patch also
+ makes it give the same error for \k'' (previously it complained that that
+ was a reference to a non-existent subpattern).
+
+6. The erroneous patterns (?+-a) and (?-+a) give different error messages;
+ this is right because (?- can be followed by option settings as well as by
+ digits. I have, however, made the messages clearer.
+
+7. Patterns such as (?(1)a|b) (a pattern that contains fewer subpatterns
+ than the number used in the conditional) now cause a compile-time error.
+ This is actually not compatible with Perl, which accepts such patterns, but
+ treats the conditional as always being FALSE (as PCRE used to), but it
+ seems to me that giving a diagnostic is better.
+
+8. Change "alphameric" to the more common word "alphanumeric" in comments
+ and messages.
+
+9. Fix two occurrences of "backslash" in comments that should have been
+ "backspace".
+
+10. Remove two redundant lines of code that can never be obeyed (their function
+ was moved elsewhere).
+
+11. The program that makes PCRE's Unicode character property table had a bug
+ which caused it to generate incorrect table entries for sequences of
+ characters that have the same character type, but are in different scripts.
+ It amalgamated them into a single range, with the script of the first of
+ them. In other words, some characters were in the wrong script. There were
+ thirteen such cases, affecting characters in the following ranges:
+
+ U+002b0 - U+002c1
+ U+0060c - U+0060d
+ U+0061e - U+00612
+ U+0064b - U+0065e
+ U+0074d - U+0076d
+ U+01800 - U+01805
+ U+01d00 - U+01d77
+ U+01d9b - U+01dbf
+ U+0200b - U+0200f
+ U+030fc - U+030fe
+ U+03260 - U+0327f
+ U+0fb46 - U+0fbb1
+ U+10450 - U+1049d
+
+12. The -o option (show only the matching part of a line) for pcregrep was not
+ compatible with GNU grep in that, if there was more than one match in a
+ line, it showed only the first of them. It now behaves in the same way as
+ GNU grep.
+
+13. If the -o and -v options were combined for pcregrep, it printed a blank
+ line for every non-matching line. GNU grep prints nothing, and pcregrep now
+ does the same. The return code can be used to tell if there were any
+ non-matching lines.
+
+14. Added --file-offsets and --line-offsets to pcregrep.
+
+15. The pattern (?=something)(?R) was not being diagnosed as a potentially
+ infinitely looping recursion. The bug was that positive lookaheads were not
+ being skipped when checking for a possible empty match (negative lookaheads
+ and both kinds of lookbehind were skipped).
+
+16. Fixed two typos in the Windows-only code in pcregrep.c, and moved the
+ inclusion of <windows.h> to before rather than after the definition of
+ INVALID_FILE_ATTRIBUTES (patch from David Byron).
+
+17. Specifying a possessive quantifier with a specific limit for a Unicode
+ character property caused pcre_compile() to compile bad code, which led at
+ runtime to PCRE_ERROR_INTERNAL (-14). Examples of patterns that caused this
+ are: /\p{Zl}{2,3}+/8 and /\p{Cc}{2}+/8. It was the possessive "+" that
+ caused the error; without that there was no problem.
+
+18. Added --enable-pcregrep-libz and --enable-pcregrep-libbz2.
+
+19. Added --enable-pcretest-libreadline.
+
+20. In pcrecpp.cc, the variable 'count' was incremented twice in
+ RE::GlobalReplace(). As a result, the number of replacements returned was
+ double what it should be. I removed one of the increments, but Craig sent a
+ later patch that removed the other one (the right fix) and added unit tests
+ that check the return values (which was not done before).
+
+21. Several CMake things:
+
+ (1) Arranged that, when cmake is used on Unix, the libraries end up with
+ the names libpcre and libpcreposix, not just pcre and pcreposix.
+
+ (2) The above change means that pcretest and pcregrep are now correctly
+ linked with the newly-built libraries, not previously installed ones.
+
+ (3) Added PCRE_SUPPORT_LIBREADLINE, PCRE_SUPPORT_LIBZ, PCRE_SUPPORT_LIBBZ2.
+
+22. In UTF-8 mode, with newline set to "any", a pattern such as .*a.*=.b.*
+ crashed when matching a string such as a\x{2029}b (note that \x{2029} is a
+ UTF-8 newline character). The key issue is that the pattern starts .*;
+ this means that the match must be either at the beginning, or after a
+ newline. The bug was in the code for advancing after a failed match and
+ checking that the new position followed a newline. It was not taking
+ account of UTF-8 characters correctly.
+
+23. PCRE was behaving differently from Perl in the way it recognized POSIX
+ character classes. PCRE was not treating the sequence [:...:] as a
+ character class unless the ... were all letters. Perl, however, seems to
+ allow any characters between [: and :], though of course it rejects as
+ unknown any "names" that contain non-letters, because all the known class
+ names consist only of letters. Thus, Perl gives an error for [[:1234:]],
+ for example, whereas PCRE did not - it did not recognize a POSIX character
+ class. This seemed a bit dangerous, so the code has been changed to be
+ closer to Perl. The behaviour is not identical to Perl, because PCRE will
+ diagnose an unknown class for, for example, [[:l\ower:]] where Perl will
+ treat it as [[:lower:]]. However, PCRE does now give "unknown" errors where
+ Perl does, and where it didn't before.
+
+24. Rewrite so as to remove the single use of %n from pcregrep because in some
+ Windows environments %n is disabled by default.
+
+
+Version 7.4 21-Sep-07
+---------------------
+
+1. Change 7.3/28 was implemented for classes by looking at the bitmap. This
+ means that a class such as [\s] counted as "explicit reference to CR or
+ LF". That isn't really right - the whole point of the change was to try to
+ help when there was an actual mention of one of the two characters. So now
+ the change happens only if \r or \n (or a literal CR or LF) character is
+ encountered.
+
+2. The 32-bit options word was also used for 6 internal flags, but the numbers
+ of both had grown to the point where there were only 3 bits left.
+ Fortunately, there was spare space in the data structure, and so I have
+ moved the internal flags into a new 16-bit field to free up more option
+ bits.
+
+3. The appearance of (?J) at the start of a pattern set the DUPNAMES option,
+ but did not set the internal JCHANGED flag - either of these is enough to
+ control the way the "get" function works - but the PCRE_INFO_JCHANGED
+ facility is supposed to tell if (?J) was ever used, so now (?J) at the
+ start sets both bits.
+
+4. Added options (at build time, compile time, exec time) to change \R from
+ matching any Unicode line ending sequence to just matching CR, LF, or CRLF.
+
+5. doc/pcresyntax.html was missing from the distribution.
+
+6. Put back the definition of PCRE_ERROR_NULLWSLIMIT, for backward
+ compatibility, even though it is no longer used.
+
+7. Added macro for snprintf to pcrecpp_unittest.cc and also for strtoll and
+ strtoull to pcrecpp.cc to select the available functions in WIN32 when the
+ windows.h file is present (where different names are used). [This was
+ reversed later after testing - see 16 below.]
+
+8. Changed all #include <config.h> to #include "config.h". There were also
+ some further <pcre.h> cases that I changed to "pcre.h".
+
+9. When pcregrep was used with the --colour option, it missed the line ending
+ sequence off the lines that it output.
+
+10. It was pointed out to me that arrays of string pointers cause lots of
+ relocations when a shared library is dynamically loaded. A technique of
+ using a single long string with a table of offsets can drastically reduce
+ these. I have refactored PCRE in four places to do this. The result is
+ dramatic:
+
+ Originally: 290
+ After changing UCP table: 187
+ After changing error message table: 43
+ After changing table of "verbs" 36
+ After changing table of Posix names 22
+
+ Thanks to the folks working on Gregex for glib for this insight.
+
+11. --disable-stack-for-recursion caused compiling to fail unless -enable-
+ unicode-properties was also set.
+
+12. Updated the tests so that they work when \R is defaulted to ANYCRLF.
+
+13. Added checks for ANY and ANYCRLF to pcrecpp.cc where it previously
+ checked only for CRLF.
+
+14. Added casts to pcretest.c to avoid compiler warnings.
+
+15. Added Craig's patch to various pcrecpp modules to avoid compiler warnings.
+
+16. Added Craig's patch to remove the WINDOWS_H tests, that were not working,
+ and instead check for _strtoi64 explicitly, and avoid the use of snprintf()
+ entirely. This removes changes made in 7 above.
+
+17. The CMake files have been updated, and there is now more information about
+ building with CMake in the NON-UNIX-USE document.
+
+
+Version 7.3 28-Aug-07
+---------------------
+
+ 1. In the rejigging of the build system that eventually resulted in 7.1, the
+ line "#include <pcre.h>" was included in pcre_internal.h. The use of angle
+ brackets there is not right, since it causes compilers to look for an
+ installed pcre.h, not the version that is in the source that is being
+ compiled (which of course may be different). I have changed it back to:
+
+ #include "pcre.h"
+
+ I have a vague recollection that the change was concerned with compiling in
+ different directories, but in the new build system, that is taken care of
+ by the VPATH setting the Makefile.
+
+ 2. The pattern .*$ when run in not-DOTALL UTF-8 mode with newline=any failed
+ when the subject happened to end in the byte 0x85 (e.g. if the last
+ character was \x{1ec5}). *Character* 0x85 is one of the "any" newline
+ characters but of course it shouldn't be taken as a newline when it is part
+ of another character. The bug was that, for an unlimited repeat of . in
+ not-DOTALL UTF-8 mode, PCRE was advancing by bytes rather than by
+ characters when looking for a newline.
+
+ 3. A small performance improvement in the DOTALL UTF-8 mode .* case.
+
+ 4. Debugging: adjusted the names of opcodes for different kinds of parentheses
+ in debug output.
+
+ 5. Arrange to use "%I64d" instead of "%lld" and "%I64u" instead of "%llu" for
+ long printing in the pcrecpp unittest when running under MinGW.
+
+ 6. ESC_K was left out of the EBCDIC table.
+
+ 7. Change 7.0/38 introduced a new limit on the number of nested non-capturing
+ parentheses; I made it 1000, which seemed large enough. Unfortunately, the
+ limit also applies to "virtual nesting" when a pattern is recursive, and in
+ this case 1000 isn't so big. I have been able to remove this limit at the
+ expense of backing off one optimization in certain circumstances. Normally,
+ when pcre_exec() would call its internal match() function recursively and
+ immediately return the result unconditionally, it uses a "tail recursion"
+ feature to save stack. However, when a subpattern that can match an empty
+ string has an unlimited repetition quantifier, it no longer makes this
+ optimization. That gives it a stack frame in which to save the data for
+ checking that an empty string has been matched. Previously this was taken
+ from the 1000-entry workspace that had been reserved. So now there is no
+ explicit limit, but more stack is used.
+
+ 8. Applied Daniel's patches to solve problems with the import/export magic
+ syntax that is required for Windows, and which was going wrong for the
+ pcreposix and pcrecpp parts of the library. These were overlooked when this
+ problem was solved for the main library.
+
+ 9. There were some crude static tests to avoid integer overflow when computing
+ the size of patterns that contain repeated groups with explicit upper
+ limits. As the maximum quantifier is 65535, the maximum group length was
+ set at 30,000 so that the product of these two numbers did not overflow a
+ 32-bit integer. However, it turns out that people want to use groups that
+ are longer than 30,000 bytes (though not repeat them that many times).
+ Change 7.0/17 (the refactoring of the way the pattern size is computed) has
+ made it possible to implement the integer overflow checks in a much more
+ dynamic way, which I have now done. The artificial limitation on group
+ length has been removed - we now have only the limit on the total length of
+ the compiled pattern, which depends on the LINK_SIZE setting.
+
+10. Fixed a bug in the documentation for get/copy named substring when
+ duplicate names are permitted. If none of the named substrings are set, the
+ functions return PCRE_ERROR_NOSUBSTRING (7); the doc said they returned an
+ empty string.
+
+11. Because Perl interprets \Q...\E at a high level, and ignores orphan \E
+ instances, patterns such as [\Q\E] or [\E] or even [^\E] cause an error,
+ because the ] is interpreted as the first data character and the
+ terminating ] is not found. PCRE has been made compatible with Perl in this
+ regard. Previously, it interpreted [\Q\E] as an empty class, and [\E] could
+ cause memory overwriting.
+
+10. Like Perl, PCRE automatically breaks an unlimited repeat after an empty
+ string has been matched (to stop an infinite loop). It was not recognizing
+ a conditional subpattern that could match an empty string if that
+ subpattern was within another subpattern. For example, it looped when
+ trying to match (((?(1)X|))*) but it was OK with ((?(1)X|)*) where the
+ condition was not nested. This bug has been fixed.
+
+12. A pattern like \X?\d or \P{L}?\d in non-UTF-8 mode could cause a backtrack
+ past the start of the subject in the presence of bytes with the top bit
+ set, for example "\x8aBCD".
+
+13. Added Perl 5.10 experimental backtracking controls (*FAIL), (*F), (*PRUNE),
+ (*SKIP), (*THEN), (*COMMIT), and (*ACCEPT).
+
+14. Optimized (?!) to (*FAIL).
+
+15. Updated the test for a valid UTF-8 string to conform to the later RFC 3629.
+ This restricts code points to be within the range 0 to 0x10FFFF, excluding
+ the "low surrogate" sequence 0xD800 to 0xDFFF. Previously, PCRE allowed the
+ full range 0 to 0x7FFFFFFF, as defined by RFC 2279. Internally, it still
+ does: it's just the validity check that is more restrictive.
+
+16. Inserted checks for integer overflows during escape sequence (backslash)
+ processing, and also fixed erroneous offset values for syntax errors during
+ backslash processing.
+
+17. Fixed another case of looking too far back in non-UTF-8 mode (cf 12 above)
+ for patterns like [\PPP\x8a]{1,}\x80 with the subject "A\x80".
+
+18. An unterminated class in a pattern like (?1)\c[ with a "forward reference"
+ caused an overrun.
+
+19. A pattern like (?:[\PPa*]*){8,} which had an "extended class" (one with
+ something other than just ASCII characters) inside a group that had an
+ unlimited repeat caused a loop at compile time (while checking to see
+ whether the group could match an empty string).
+
+20. Debugging a pattern containing \p or \P could cause a crash. For example,
+ [\P{Any}] did so. (Error in the code for printing property names.)
+
+21. An orphan \E inside a character class could cause a crash.
+
+22. A repeated capturing bracket such as (A)? could cause a wild memory
+ reference during compilation.
+
+23. There are several functions in pcre_compile() that scan along a compiled
+ expression for various reasons (e.g. to see if it's fixed length for look
+ behind). There were bugs in these functions when a repeated \p or \P was
+ present in the pattern. These operators have additional parameters compared
+ with \d, etc, and these were not being taken into account when moving along
+ the compiled data. Specifically:
+
+ (a) A item such as \p{Yi}{3} in a lookbehind was not treated as fixed
+ length.
+
+ (b) An item such as \pL+ within a repeated group could cause crashes or
+ loops.
+
+ (c) A pattern such as \p{Yi}+(\P{Yi}+)(?1) could give an incorrect
+ "reference to non-existent subpattern" error.
+
+ (d) A pattern like (\P{Yi}{2}\277)? could loop at compile time.
+
+24. A repeated \S or \W in UTF-8 mode could give wrong answers when multibyte
+ characters were involved (for example /\S{2}/8g with "A\x{a3}BC").
+
+25. Using pcregrep in multiline, inverted mode (-Mv) caused it to loop.
+
+26. Patterns such as [\P{Yi}A] which include \p or \P and just one other
+ character were causing crashes (broken optimization).
+
+27. Patterns such as (\P{Yi}*\277)* (group with possible zero repeat containing
+ \p or \P) caused a compile-time loop.
+
+28. More problems have arisen in unanchored patterns when CRLF is a valid line
+ break. For example, the unstudied pattern [\r\n]A does not match the string
+ "\r\nA" because change 7.0/46 below moves the current point on by two
+ characters after failing to match at the start. However, the pattern \nA
+ *does* match, because it doesn't start till \n, and if [\r\n]A is studied,
+ the same is true. There doesn't seem any very clean way out of this, but
+ what I have chosen to do makes the common cases work: PCRE now takes note
+ of whether there can be an explicit match for \r or \n anywhere in the
+ pattern, and if so, 7.0/46 no longer applies. As part of this change,
+ there's a new PCRE_INFO_HASCRORLF option for finding out whether a compiled
+ pattern has explicit CR or LF references.
+
+29. Added (*CR) etc for changing newline setting at start of pattern.
+
+
+Version 7.2 19-Jun-07
+---------------------
+
+ 1. If the fr_FR locale cannot be found for test 3, try the "french" locale,
+ which is apparently normally available under Windows.
+
+ 2. Re-jig the pcregrep tests with different newline settings in an attempt
+ to make them independent of the local environment's newline setting.
+
+ 3. Add code to configure.ac to remove -g from the CFLAGS default settings.
+
+ 4. Some of the "internals" tests were previously cut out when the link size
+ was not 2, because the output contained actual offsets. The recent new
+ "Z" feature of pcretest means that these can be cut out, making the tests
+ usable with all link sizes.
+
+ 5. Implemented Stan Switzer's goto replacement for longjmp() when not using
+ stack recursion. This gives a massive performance boost under BSD, but just
+ a small improvement under Linux. However, it saves one field in the frame
+ in all cases.
+
+ 6. Added more features from the forthcoming Perl 5.10:
+
+ (a) (?-n) (where n is a string of digits) is a relative subroutine or
+ recursion call. It refers to the nth most recently opened parentheses.
+
+ (b) (?+n) is also a relative subroutine call; it refers to the nth next
+ to be opened parentheses.
+
+ (c) Conditions that refer to capturing parentheses can be specified
+ relatively, for example, (?(-2)... or (?(+3)...
+
+ (d) \K resets the start of the current match so that everything before
+ is not part of it.
+
+ (e) \k{name} is synonymous with \k<name> and \k'name' (.NET compatible).
+
+ (f) \g{name} is another synonym - part of Perl 5.10's unification of
+ reference syntax.
+
+ (g) (?| introduces a group in which the numbering of parentheses in each
+ alternative starts with the same number.
+
+ (h) \h, \H, \v, and \V match horizontal and vertical whitespace.
+
+ 7. Added two new calls to pcre_fullinfo(): PCRE_INFO_OKPARTIAL and
+ PCRE_INFO_JCHANGED.
+
+ 8. A pattern such as (.*(.)?)* caused pcre_exec() to fail by either not
+ terminating or by crashing. Diagnosed by Viktor Griph; it was in the code
+ for detecting groups that can match an empty string.
+
+ 9. A pattern with a very large number of alternatives (more than several
+ hundred) was running out of internal workspace during the pre-compile
+ phase, where pcre_compile() figures out how much memory will be needed. A
+ bit of new cunning has reduced the workspace needed for groups with
+ alternatives. The 1000-alternative test pattern now uses 12 bytes of
+ workspace instead of running out of the 4096 that are available.
+
+10. Inserted some missing (unsigned int) casts to get rid of compiler warnings.
+
+11. Applied patch from Google to remove an optimization that didn't quite work.
+ The report of the bug said:
+
+ pcrecpp::RE("a*").FullMatch("aaa") matches, while
+ pcrecpp::RE("a*?").FullMatch("aaa") does not, and
+ pcrecpp::RE("a*?\\z").FullMatch("aaa") does again.
+
+12. If \p or \P was used in non-UTF-8 mode on a character greater than 127
+ it matched the wrong number of bytes.
+
+
+Version 7.1 24-Apr-07
+---------------------
+
+ 1. Applied Bob Rossi and Daniel G's patches to convert the build system to one
+ that is more "standard", making use of automake and other Autotools. There
+ is some re-arrangement of the files and adjustment of comments consequent
+ on this.
+
+ 2. Part of the patch fixed a problem with the pcregrep tests. The test of -r
+ for recursive directory scanning broke on some systems because the files
+ are not scanned in any specific order and on different systems the order
+ was different. A call to "sort" has been inserted into RunGrepTest for the
+ approprate test as a short-term fix. In the longer term there may be an
+ alternative.
+
+ 3. I had an email from Eric Raymond about problems translating some of PCRE's
+ man pages to HTML (despite the fact that I distribute HTML pages, some
+ people do their own conversions for various reasons). The problems
+ concerned the use of low-level troff macros .br and .in. I have therefore
+ removed all such uses from the man pages (some were redundant, some could
+ be replaced by .nf/.fi pairs). The 132html script that I use to generate
+ HTML has been updated to handle .nf/.fi and to complain if it encounters
+ .br or .in.
+
+ 4. Updated comments in configure.ac that get placed in config.h.in and also
+ arranged for config.h to be included in the distribution, with the name
+ config.h.generic, for the benefit of those who have to compile without
+ Autotools (compare pcre.h, which is now distributed as pcre.h.generic).
+
+ 5. Updated the support (such as it is) for Virtual Pascal, thanks to Stefan
+ Weber: (1) pcre_internal.h was missing some function renames; (2) updated
+ makevp.bat for the current PCRE, using the additional files
+ makevp_c.txt, makevp_l.txt, and pcregexp.pas.
+
+ 6. A Windows user reported a minor discrepancy with test 2, which turned out
+ to be caused by a trailing space on an input line that had got lost in his
+ copy. The trailing space was an accident, so I've just removed it.
+
+ 7. Add -Wl,-R... flags in pcre-config.in for *BSD* systems, as I'm told
+ that is needed.
+
+ 8. Mark ucp_table (in ucptable.h) and ucp_gentype (in pcre_ucp_searchfuncs.c)
+ as "const" (a) because they are and (b) because it helps the PHP
+ maintainers who have recently made a script to detect big data structures
+ in the php code that should be moved to the .rodata section. I remembered
+ to update Builducptable as well, so it won't revert if ucptable.h is ever
+ re-created.
+
+ 9. Added some extra #ifdef SUPPORT_UTF8 conditionals into pcretest.c,
+ pcre_printint.src, pcre_compile.c, pcre_study.c, and pcre_tables.c, in
+ order to be able to cut out the UTF-8 tables in the latter when UTF-8
+ support is not required. This saves 1.5-2K of code, which is important in
+ some applications.
+
+ Later: more #ifdefs are needed in pcre_ord2utf8.c and pcre_valid_utf8.c
+ so as not to refer to the tables, even though these functions will never be
+ called when UTF-8 support is disabled. Otherwise there are problems with a
+ shared library.
+
+10. Fixed two bugs in the emulated memmove() function in pcre_internal.h:
+
+ (a) It was defining its arguments as char * instead of void *.
+
+ (b) It was assuming that all moves were upwards in memory; this was true
+ a long time ago when I wrote it, but is no longer the case.
+
+ The emulated memove() is provided for those environments that have neither
+ memmove() nor bcopy(). I didn't think anyone used it these days, but that
+ is clearly not the case, as these two bugs were recently reported.
+
+11. The script PrepareRelease is now distributed: it calls 132html, CleanTxt,
+ and Detrail to create the HTML documentation, the .txt form of the man
+ pages, and it removes trailing spaces from listed files. It also creates
+ pcre.h.generic and config.h.generic from pcre.h and config.h. In the latter
+ case, it wraps all the #defines with #ifndefs. This script should be run
+ before "make dist".
+
+12. Fixed two fairly obscure bugs concerned with quantified caseless matching
+ with Unicode property support.
+
+ (a) For a maximizing quantifier, if the two different cases of the
+ character were of different lengths in their UTF-8 codings (there are
+ some cases like this - I found 11), and the matching function had to
+ back up over a mixture of the two cases, it incorrectly assumed they
+ were both the same length.
+
+ (b) When PCRE was configured to use the heap rather than the stack for
+ recursion during matching, it was not correctly preserving the data for
+ the other case of a UTF-8 character when checking ahead for a match
+ while processing a minimizing repeat. If the check also involved
+ matching a wide character, but failed, corruption could cause an
+ erroneous result when trying to check for a repeat of the original
+ character.
+
+13. Some tidying changes to the testing mechanism:
+
+ (a) The RunTest script now detects the internal link size and whether there
+ is UTF-8 and UCP support by running ./pcretest -C instead of relying on
+ values substituted by "configure". (The RunGrepTest script already did
+ this for UTF-8.) The configure.ac script no longer substitutes the
+ relevant variables.
+
+ (b) The debugging options /B and /D in pcretest show the compiled bytecode
+ with length and offset values. This means that the output is different
+ for different internal link sizes. Test 2 is skipped for link sizes
+ other than 2 because of this, bypassing the problem. Unfortunately,
+ there was also a test in test 3 (the locale tests) that used /B and
+ failed for link sizes other than 2. Rather than cut the whole test out,
+ I have added a new /Z option to pcretest that replaces the length and
+ offset values with spaces. This is now used to make test 3 independent
+ of link size. (Test 2 will be tidied up later.)
+
+14. If erroroffset was passed as NULL to pcre_compile, it provoked a
+ segmentation fault instead of returning the appropriate error message.
+
+15. In multiline mode when the newline sequence was set to "any", the pattern
+ ^$ would give a match between the \r and \n of a subject such as "A\r\nB".
+ This doesn't seem right; it now treats the CRLF combination as the line
+ ending, and so does not match in that case. It's only a pattern such as ^$
+ that would hit this one: something like ^ABC$ would have failed after \r
+ and then tried again after \r\n.
+
+16. Changed the comparison command for RunGrepTest from "diff -u" to "diff -ub"
+ in an attempt to make files that differ only in their line terminators
+ compare equal. This works on Linux.
+
+17. Under certain error circumstances pcregrep might try to free random memory
+ as it exited. This is now fixed, thanks to valgrind.
+
+19. In pcretest, if the pattern /(?m)^$/g<any> was matched against the string
+ "abc\r\n\r\n", it found an unwanted second match after the second \r. This
+ was because its rules for how to advance for /g after matching an empty
+ string at the end of a line did not allow for this case. They now check for
+ it specially.
+
+20. pcretest is supposed to handle patterns and data of any length, by
+ extending its buffers when necessary. It was getting this wrong when the
+ buffer for a data line had to be extended.
+
+21. Added PCRE_NEWLINE_ANYCRLF which is like ANY, but matches only CR, LF, or
+ CRLF as a newline sequence.
+
+22. Code for handling Unicode properties in pcre_dfa_exec() wasn't being cut
+ out by #ifdef SUPPORT_UCP. This did no harm, as it could never be used, but
+ I have nevertheless tidied it up.
+
+23. Added some casts to kill warnings from HP-UX ia64 compiler.
+
+24. Added a man page for pcre-config.
+
+
+Version 7.0 19-Dec-06
+---------------------
+
+ 1. Fixed a signed/unsigned compiler warning in pcre_compile.c, shown up by
+ moving to gcc 4.1.1.
+
+ 2. The -S option for pcretest uses setrlimit(); I had omitted to #include
+ sys/time.h, which is documented as needed for this function. It doesn't
+ seem to matter on Linux, but it showed up on some releases of OS X.
+
+ 3. It seems that there are systems where bytes whose values are greater than
+ 127 match isprint() in the "C" locale. The "C" locale should be the
+ default when a C program starts up. In most systems, only ASCII printing
+ characters match isprint(). This difference caused the output from pcretest
+ to vary, making some of the tests fail. I have changed pcretest so that:
+
+ (a) When it is outputting text in the compiled version of a pattern, bytes
+ other than 32-126 are always shown as hex escapes.
+
+ (b) When it is outputting text that is a matched part of a subject string,
+ it does the same, unless a different locale has been set for the match
+ (using the /L modifier). In this case, it uses isprint() to decide.
+
+ 4. Fixed a major bug that caused incorrect computation of the amount of memory
+ required for a compiled pattern when options that changed within the
+ pattern affected the logic of the preliminary scan that determines the
+ length. The relevant options are -x, and -i in UTF-8 mode. The result was
+ that the computed length was too small. The symptoms of this bug were
+ either the PCRE error "internal error: code overflow" from pcre_compile(),
+ or a glibc crash with a message such as "pcretest: free(): invalid next
+ size (fast)". Examples of patterns that provoked this bug (shown in
+ pcretest format) are:
+
+ /(?-x: )/x
+ /(?x)(?-x: \s*#\s*)/
+ /((?i)[\x{c0}])/8
+ /(?i:[\x{c0}])/8
+
+ HOWEVER: Change 17 below makes this fix obsolete as the memory computation
+ is now done differently.
+
+ 5. Applied patches from Google to: (a) add a QuoteMeta function to the C++
+ wrapper classes; (b) implement a new function in the C++ scanner that is
+ more efficient than the old way of doing things because it avoids levels of
+ recursion in the regex matching; (c) add a paragraph to the documentation
+ for the FullMatch() function.
+
+ 6. The escape sequence \n was being treated as whatever was defined as
+ "newline". Not only was this contrary to the documentation, which states
+ that \n is character 10 (hex 0A), but it also went horribly wrong when
+ "newline" was defined as CRLF. This has been fixed.
+
+ 7. In pcre_dfa_exec.c the value of an unsigned integer (the variable called c)
+ was being set to -1 for the "end of line" case (supposedly a value that no
+ character can have). Though this value is never used (the check for end of
+ line is "zero bytes in current character"), it caused compiler complaints.
+ I've changed it to 0xffffffff.
+
+ 8. In pcre_version.c, the version string was being built by a sequence of
+ C macros that, in the event of PCRE_PRERELEASE being defined as an empty
+ string (as it is for production releases) called a macro with an empty
+ argument. The C standard says the result of this is undefined. The gcc
+ compiler treats it as an empty string (which was what was wanted) but it is
+ reported that Visual C gives an error. The source has been hacked around to
+ avoid this problem.
+
+ 9. On the advice of a Windows user, included <io.h> and <fcntl.h> in Windows
+ builds of pcretest, and changed the call to _setmode() to use _O_BINARY
+ instead of 0x8000. Made all the #ifdefs test both _WIN32 and WIN32 (not all
+ of them did).
+
+10. Originally, pcretest opened its input and output without "b"; then I was
+ told that "b" was needed in some environments, so it was added for release
+ 5.0 to both the input and output. (It makes no difference on Unix-like
+ systems.) Later I was told that it is wrong for the input on Windows. I've
+ now abstracted the modes into two macros, to make it easier to fiddle with
+ them, and removed "b" from the input mode under Windows.
+
+11. Added pkgconfig support for the C++ wrapper library, libpcrecpp.
+
+12. Added -help and --help to pcretest as an official way of being reminded
+ of the options.
+
+13. Removed some redundant semicolons after macro calls in pcrecpparg.h.in
+ and pcrecpp.cc because they annoy compilers at high warning levels.
+
+14. A bit of tidying/refactoring in pcre_exec.c in the main bumpalong loop.
+
+15. Fixed an occurrence of == in configure.ac that should have been = (shell
+ scripts are not C programs :-) and which was not noticed because it works
+ on Linux.
+
+16. pcretest is supposed to handle any length of pattern and data line (as one
+ line or as a continued sequence of lines) by extending its input buffer if
+ necessary. This feature was broken for very long pattern lines, leading to
+ a string of junk being passed to pcre_compile() if the pattern was longer
+ than about 50K.
+
+17. I have done a major re-factoring of the way pcre_compile() computes the
+ amount of memory needed for a compiled pattern. Previously, there was code
+ that made a preliminary scan of the pattern in order to do this. That was
+ OK when PCRE was new, but as the facilities have expanded, it has become
+ harder and harder to keep it in step with the real compile phase, and there
+ have been a number of bugs (see for example, 4 above). I have now found a
+ cunning way of running the real compile function in a "fake" mode that
+ enables it to compute how much memory it would need, while actually only
+ ever using a few hundred bytes of working memory and without too many
+ tests of the mode. This should make future maintenance and development
+ easier. A side effect of this work is that the limit of 200 on the nesting
+ depth of parentheses has been removed (though this was never a serious
+ limitation, I suspect). However, there is a downside: pcre_compile() now
+ runs more slowly than before (30% or more, depending on the pattern). I
+ hope this isn't a big issue. There is no effect on runtime performance.
+
+18. Fixed a minor bug in pcretest: if a pattern line was not terminated by a
+ newline (only possible for the last line of a file) and it was a
+ pattern that set a locale (followed by /Lsomething), pcretest crashed.
+
+19. Added additional timing features to pcretest. (1) The -tm option now times
+ matching only, not compiling. (2) Both -t and -tm can be followed, as a
+ separate command line item, by a number that specifies the number of
+ repeats to use when timing. The default is 50000; this gives better
+ precision, but takes uncomfortably long for very large patterns.
+
+20. Extended pcre_study() to be more clever in cases where a branch of a
+ subpattern has no definite first character. For example, (a*|b*)[cd] would
+ previously give no result from pcre_study(). Now it recognizes that the
+ first character must be a, b, c, or d.
+
+21. There was an incorrect error "recursive call could loop indefinitely" if
+ a subpattern (or the entire pattern) that was being tested for matching an
+ empty string contained only one non-empty item after a nested subpattern.
+ For example, the pattern (?>\x{100}*)\d(?R) provoked this error
+ incorrectly, because the \d was being skipped in the check.
+
+22. The pcretest program now has a new pattern option /B and a command line
+ option -b, which is equivalent to adding /B to every pattern. This causes
+ it to show the compiled bytecode, without the additional information that
+ -d shows. The effect of -d is now the same as -b with -i (and similarly, /D
+ is the same as /B/I).
+
+23. A new optimization is now able automatically to treat some sequences such
+ as a*b as a*+b. More specifically, if something simple (such as a character
+ or a simple class like \d) has an unlimited quantifier, and is followed by
+ something that cannot possibly match the quantified thing, the quantifier
+ is automatically "possessified".
+
+24. A recursive reference to a subpattern whose number was greater than 39
+ went wrong under certain circumstances in UTF-8 mode. This bug could also
+ have affected the operation of pcre_study().
+
+25. Realized that a little bit of performance could be had by replacing
+ (c & 0xc0) == 0xc0 with c >= 0xc0 when processing UTF-8 characters.
+
+26. Timing data from pcretest is now shown to 4 decimal places instead of 3.
+
+27. Possessive quantifiers such as a++ were previously implemented by turning
+ them into atomic groups such as ($>a+). Now they have their own opcodes,
+ which improves performance. This includes the automatically created ones
+ from 23 above.
+
+28. A pattern such as (?=(\w+))\1: which simulates an atomic group using a
+ lookahead was broken if it was not anchored. PCRE was mistakenly expecting
+ the first matched character to be a colon. This applied both to named and
+ numbered groups.
+
+29. The ucpinternal.h header file was missing its idempotency #ifdef.
+
+30. I was sent a "project" file called libpcre.a.dev which I understand makes
+ building PCRE on Windows easier, so I have included it in the distribution.
+
+31. There is now a check in pcretest against a ridiculously large number being
+ returned by pcre_exec() or pcre_dfa_exec(). If this happens in a /g or /G
+ loop, the loop is abandoned.
+
+32. Forward references to subpatterns in conditions such as (?(2)...) where
+ subpattern 2 is defined later cause pcre_compile() to search forwards in
+ the pattern for the relevant set of parentheses. This search went wrong
+ when there were unescaped parentheses in a character class, parentheses
+ escaped with \Q...\E, or parentheses in a #-comment in /x mode.
+
+33. "Subroutine" calls and backreferences were previously restricted to
+ referencing subpatterns earlier in the regex. This restriction has now
+ been removed.
+
+34. Added a number of extra features that are going to be in Perl 5.10. On the
+ whole, these are just syntactic alternatives for features that PCRE had
+ previously implemented using the Python syntax or my own invention. The
+ other formats are all retained for compatibility.
+
+ (a) Named groups can now be defined as (?<name>...) or (?'name'...) as well
+ as (?P<name>...). The new forms, as well as being in Perl 5.10, are
+ also .NET compatible.
+
+ (b) A recursion or subroutine call to a named group can now be defined as
+ (?&name) as well as (?P>name).
+
+ (c) A backreference to a named group can now be defined as \k<name> or
+ \k'name' as well as (?P=name). The new forms, as well as being in Perl
+ 5.10, are also .NET compatible.
+
+ (d) A conditional reference to a named group can now use the syntax
+ (?(<name>) or (?('name') as well as (?(name).
+
+ (e) A "conditional group" of the form (?(DEFINE)...) can be used to define
+ groups (named and numbered) that are never evaluated inline, but can be
+ called as "subroutines" from elsewhere. In effect, the DEFINE condition
+ is always false. There may be only one alternative in such a group.
+
+ (f) A test for recursion can be given as (?(R1).. or (?(R&name)... as well
+ as the simple (?(R). The condition is true only if the most recent
+ recursion is that of the given number or name. It does not search out
+ through the entire recursion stack.
+
+ (g) The escape \gN or \g{N} has been added, where N is a positive or
+ negative number, specifying an absolute or relative reference.
+
+35. Tidied to get rid of some further signed/unsigned compiler warnings and
+ some "unreachable code" warnings.
+
+36. Updated the Unicode property tables to Unicode version 5.0.0. Amongst other
+ things, this adds five new scripts.
+
+37. Perl ignores orphaned \E escapes completely. PCRE now does the same.
+ There were also incompatibilities regarding the handling of \Q..\E inside
+ character classes, for example with patterns like [\Qa\E-\Qz\E] where the
+ hyphen was adjacent to \Q or \E. I hope I've cleared all this up now.
+
+38. Like Perl, PCRE detects when an indefinitely repeated parenthesized group
+ matches an empty string, and forcibly breaks the loop. There were bugs in
+ this code in non-simple cases. For a pattern such as ^(a()*)* matched
+ against aaaa the result was just "a" rather than "aaaa", for example. Two
+ separate and independent bugs (that affected different cases) have been
+ fixed.
+
+39. Refactored the code to abolish the use of different opcodes for small
+ capturing bracket numbers. This is a tidy that I avoided doing when I
+ removed the limit on the number of capturing brackets for 3.5 back in 2001.
+ The new approach is not only tidier, it makes it possible to reduce the
+ memory needed to fix the previous bug (38).
+
+40. Implemented PCRE_NEWLINE_ANY to recognize any of the Unicode newline
+ sequences (http://unicode.org/unicode/reports/tr18/) as "newline" when
+ processing dot, circumflex, or dollar metacharacters, or #-comments in /x
+ mode.
+
+41. Add \R to match any Unicode newline sequence, as suggested in the Unicode
+ report.
+
+42. Applied patch, originally from Ari Pollak, modified by Google, to allow
+ copy construction and assignment in the C++ wrapper.
+
+43. Updated pcregrep to support "--newline=any". In the process, I fixed a
+ couple of bugs that could have given wrong results in the "--newline=crlf"
+ case.
+
+44. Added a number of casts and did some reorganization of signed/unsigned int
+ variables following suggestions from Dair Grant. Also renamed the variable
+ "this" as "item" because it is a C++ keyword.
+
+45. Arranged for dftables to add
+
+ #include "pcre_internal.h"
+
+ to pcre_chartables.c because without it, gcc 4.x may remove the array
+ definition from the final binary if PCRE is built into a static library and
+ dead code stripping is activated.
+
+46. For an unanchored pattern, if a match attempt fails at the start of a
+ newline sequence, and the newline setting is CRLF or ANY, and the next two
+ characters are CRLF, advance by two characters instead of one.
+
+
+Version 6.7 04-Jul-06
+---------------------
+
+ 1. In order to handle tests when input lines are enormously long, pcretest has
+ been re-factored so that it automatically extends its buffers when
+ necessary. The code is crude, but this _is_ just a test program. The
+ default size has been increased from 32K to 50K.
+
+ 2. The code in pcre_study() was using the value of the re argument before
+ testing it for NULL. (Of course, in any sensible call of the function, it
+ won't be NULL.)
+
+ 3. The memmove() emulation function in pcre_internal.h, which is used on
+ systems that lack both memmove() and bcopy() - that is, hardly ever -
+ was missing a "static" storage class specifier.
+
+ 4. When UTF-8 mode was not set, PCRE looped when compiling certain patterns
+ containing an extended class (one that cannot be represented by a bitmap
+ because it contains high-valued characters or Unicode property items, e.g.
+ [\pZ]). Almost always one would set UTF-8 mode when processing such a
+ pattern, but PCRE should not loop if you do not (it no longer does).
+ [Detail: two cases were found: (a) a repeated subpattern containing an
+ extended class; (b) a recursive reference to a subpattern that followed a
+ previous extended class. It wasn't skipping over the extended class
+ correctly when UTF-8 mode was not set.]
+
+ 5. A negated single-character class was not being recognized as fixed-length
+ in lookbehind assertions such as (?<=[^f]), leading to an incorrect
+ compile error "lookbehind assertion is not fixed length".
+
+ 6. The RunPerlTest auxiliary script was showing an unexpected difference
+ between PCRE and Perl for UTF-8 tests. It turns out that it is hard to
+ write a Perl script that can interpret lines of an input file either as
+ byte characters or as UTF-8, which is what "perltest" was being required to
+ do for the non-UTF-8 and UTF-8 tests, respectively. Essentially what you
+ can't do is switch easily at run time between having the "use utf8;" pragma
+ or not. In the end, I fudged it by using the RunPerlTest script to insert
+ "use utf8;" explicitly for the UTF-8 tests.
+
+ 7. In multiline (/m) mode, PCRE was matching ^ after a terminating newline at
+ the end of the subject string, contrary to the documentation and to what
+ Perl does. This was true of both matching functions. Now it matches only at
+ the start of the subject and immediately after *internal* newlines.
+
+ 8. A call of pcre_fullinfo() from pcretest to get the option bits was passing
+ a pointer to an int instead of a pointer to an unsigned long int. This
+ caused problems on 64-bit systems.
+
+ 9. Applied a patch from the folks at Google to pcrecpp.cc, to fix "another
+ instance of the 'standard' template library not being so standard".
+
+10. There was no check on the number of named subpatterns nor the maximum
+ length of a subpattern name. The product of these values is used to compute
+ the size of the memory block for a compiled pattern. By supplying a very
+ long subpattern name and a large number of named subpatterns, the size
+ computation could be caused to overflow. This is now prevented by limiting
+ the length of names to 32 characters, and the number of named subpatterns
+ to 10,000.
+
+11. Subpatterns that are repeated with specific counts have to be replicated in
+ the compiled pattern. The size of memory for this was computed from the
+ length of the subpattern and the repeat count. The latter is limited to
+ 65535, but there was no limit on the former, meaning that integer overflow
+ could in principle occur. The compiled length of a repeated subpattern is
+ now limited to 30,000 bytes in order to prevent this.
+
+12. Added the optional facility to have named substrings with the same name.
+
+13. Added the ability to use a named substring as a condition, using the
+ Python syntax: (?(name)yes|no). This overloads (?(R)... and names that
+ are numbers (not recommended). Forward references are permitted.
+
+14. Added forward references in named backreferences (if you see what I mean).
+
+15. In UTF-8 mode, with the PCRE_DOTALL option set, a quantified dot in the
+ pattern could run off the end of the subject. For example, the pattern
+ "(?s)(.{1,5})"8 did this with the subject "ab".
+
+16. If PCRE_DOTALL or PCRE_MULTILINE were set, pcre_dfa_exec() behaved as if
+ PCRE_CASELESS was set when matching characters that were quantified with ?
+ or *.
+
+17. A character class other than a single negated character that had a minimum
+ but no maximum quantifier - for example [ab]{6,} - was not handled
+ correctly by pce_dfa_exec(). It would match only one character.
+
+18. A valid (though odd) pattern that looked like a POSIX character
+ class but used an invalid character after [ (for example [[,abc,]]) caused
+ pcre_compile() to give the error "Failed: internal error: code overflow" or
+ in some cases to crash with a glibc free() error. This could even happen if
+ the pattern terminated after [[ but there just happened to be a sequence of
+ letters, a binary zero, and a closing ] in the memory that followed.
+
+19. Perl's treatment of octal escapes in the range \400 to \777 has changed
+ over the years. Originally (before any Unicode support), just the bottom 8
+ bits were taken. Thus, for example, \500 really meant \100. Nowadays the
+ output from "man perlunicode" includes this:
+
+ The regular expression compiler produces polymorphic opcodes. That
+ is, the pattern adapts to the data and automatically switches to
+ the Unicode character scheme when presented with Unicode data--or
+ instead uses a traditional byte scheme when presented with byte
+ data.
+
+ Sadly, a wide octal escape does not cause a switch, and in a string with
+ no other multibyte characters, these octal escapes are treated as before.
+ Thus, in Perl, the pattern /\500/ actually matches \100 but the pattern
+ /\500|\x{1ff}/ matches \500 or \777 because the whole thing is treated as a
+ Unicode string.
+
+ I have not perpetrated such confusion in PCRE. Up till now, it took just
+ the bottom 8 bits, as in old Perl. I have now made octal escapes with
+ values greater than \377 illegal in non-UTF-8 mode. In UTF-8 mode they
+ translate to the appropriate multibyte character.
+
+29. Applied some refactoring to reduce the number of warnings from Microsoft
+ and Borland compilers. This has included removing the fudge introduced
+ seven years ago for the OS/2 compiler (see 2.02/2 below) because it caused
+ a warning about an unused variable.
+
+21. PCRE has not included VT (character 0x0b) in the set of whitespace
+ characters since release 4.0, because Perl (from release 5.004) does not.
+ [Or at least, is documented not to: some releases seem to be in conflict
+ with the documentation.] However, when a pattern was studied with
+ pcre_study() and all its branches started with \s, PCRE still included VT
+ as a possible starting character. Of course, this did no harm; it just
+ caused an unnecessary match attempt.
+
+22. Removed a now-redundant internal flag bit that recorded the fact that case
+ dependency changed within the pattern. This was once needed for "required
+ byte" processing, but is no longer used. This recovers a now-scarce options
+ bit. Also moved the least significant internal flag bit to the most-
+ significant bit of the word, which was not previously used (hangover from
+ the days when it was an int rather than a uint) to free up another bit for
+ the future.
+
+23. Added support for CRLF line endings as well as CR and LF. As well as the
+ default being selectable at build time, it can now be changed at runtime
+ via the PCRE_NEWLINE_xxx flags. There are now options for pcregrep to
+ specify that it is scanning data with non-default line endings.
+
+24. Changed the definition of CXXLINK to make it agree with the definition of
+ LINK in the Makefile, by replacing LDFLAGS to CXXFLAGS.
+
+25. Applied Ian Taylor's patches to avoid using another stack frame for tail
+ recursions. This makes a big different to stack usage for some patterns.
+
+26. If a subpattern containing a named recursion or subroutine reference such
+ as (?P>B) was quantified, for example (xxx(?P>B)){3}, the calculation of
+ the space required for the compiled pattern went wrong and gave too small a
+ value. Depending on the environment, this could lead to "Failed: internal
+ error: code overflow at offset 49" or "glibc detected double free or
+ corruption" errors.
+
+27. Applied patches from Google (a) to support the new newline modes and (b) to
+ advance over multibyte UTF-8 characters in GlobalReplace.
+
+28. Change free() to pcre_free() in pcredemo.c. Apparently this makes a
+ difference for some implementation of PCRE in some Windows version.
+
+29. Added some extra testing facilities to pcretest:
+
+ \q<number> in a data line sets the "match limit" value
+ \Q<number> in a data line sets the "match recursion limt" value
+ -S <number> sets the stack size, where <number> is in megabytes
+
+ The -S option isn't available for Windows.
+
+
+Version 6.6 06-Feb-06
+---------------------
+
+ 1. Change 16(a) for 6.5 broke things, because PCRE_DATA_SCOPE was not defined
+ in pcreposix.h. I have copied the definition from pcre.h.
+
+ 2. Change 25 for 6.5 broke compilation in a build directory out-of-tree
+ because pcre.h is no longer a built file.
+
+ 3. Added Jeff Friedl's additional debugging patches to pcregrep. These are
+ not normally included in the compiled code.
+
+
+Version 6.5 01-Feb-06
+---------------------
+
+ 1. When using the partial match feature with pcre_dfa_exec(), it was not
+ anchoring the second and subsequent partial matches at the new starting
+ point. This could lead to incorrect results. For example, with the pattern
+ /1234/, partially matching against "123" and then "a4" gave a match.
+
+ 2. Changes to pcregrep:
+
+ (a) All non-match returns from pcre_exec() were being treated as failures
+ to match the line. Now, unless the error is PCRE_ERROR_NOMATCH, an
+ error message is output. Some extra information is given for the
+ PCRE_ERROR_MATCHLIMIT and PCRE_ERROR_RECURSIONLIMIT errors, which are
+ probably the only errors that are likely to be caused by users (by
+ specifying a regex that has nested indefinite repeats, for instance).
+ If there are more than 20 of these errors, pcregrep is abandoned.
+
+ (b) A binary zero was treated as data while matching, but terminated the
+ output line if it was written out. This has been fixed: binary zeroes
+ are now no different to any other data bytes.
+
+ (c) Whichever of the LC_ALL or LC_CTYPE environment variables is set is
+ used to set a locale for matching. The --locale=xxxx long option has
+ been added (no short equivalent) to specify a locale explicitly on the
+ pcregrep command, overriding the environment variables.
+
+ (d) When -B was used with -n, some line numbers in the output were one less
+ than they should have been.
+
+ (e) Added the -o (--only-matching) option.
+
+ (f) If -A or -C was used with -c (count only), some lines of context were
+ accidentally printed for the final match.
+
+ (g) Added the -H (--with-filename) option.
+
+ (h) The combination of options -rh failed to suppress file names for files
+ that were found from directory arguments.
+
+ (i) Added the -D (--devices) and -d (--directories) options.
+
+ (j) Added the -F (--fixed-strings) option.
+
+ (k) Allow "-" to be used as a file name for -f as well as for a data file.
+
+ (l) Added the --colo(u)r option.
+
+ (m) Added Jeffrey Friedl's -S testing option, but within #ifdefs so that it
+ is not present by default.
+
+ 3. A nasty bug was discovered in the handling of recursive patterns, that is,
+ items such as (?R) or (?1), when the recursion could match a number of
+ alternatives. If it matched one of the alternatives, but subsequently,
+ outside the recursion, there was a failure, the code tried to back up into
+ the recursion. However, because of the way PCRE is implemented, this is not
+ possible, and the result was an incorrect result from the match.
+
+ In order to prevent this happening, the specification of recursion has
+ been changed so that all such subpatterns are automatically treated as
+ atomic groups. Thus, for example, (?R) is treated as if it were (?>(?R)).
+
+ 4. I had overlooked the fact that, in some locales, there are characters for
+ which isalpha() is true but neither isupper() nor islower() are true. In
+ the fr_FR locale, for instance, the \xAA and \xBA characters (ordmasculine
+ and ordfeminine) are like this. This affected the treatment of \w and \W
+ when they appeared in character classes, but not when they appeared outside
+ a character class. The bit map for "word" characters is now created
+ separately from the results of isalnum() instead of just taking it from the
+ upper, lower, and digit maps. (Plus the underscore character, of course.)
+
+ 5. The above bug also affected the handling of POSIX character classes such as
+ [[:alpha:]] and [[:alnum:]]. These do not have their own bit maps in PCRE's
+ permanent tables. Instead, the bit maps for such a class were previously
+ created as the appropriate unions of the upper, lower, and digit bitmaps.
+ Now they are created by subtraction from the [[:word:]] class, which has
+ its own bitmap.
+
+ 6. The [[:blank:]] character class matches horizontal, but not vertical space.
+ It is created by subtracting the vertical space characters (\x09, \x0a,
+ \x0b, \x0c) from the [[:space:]] bitmap. Previously, however, the
+ subtraction was done in the overall bitmap for a character class, meaning
+ that a class such as [\x0c[:blank:]] was incorrect because \x0c would not
+ be recognized. This bug has been fixed.
+
+ 7. Patches from the folks at Google:
+
+ (a) pcrecpp.cc: "to handle a corner case that may or may not happen in
+ real life, but is still worth protecting against".
+
+ (b) pcrecpp.cc: "corrects a bug when negative radixes are used with
+ regular expressions".
+
+ (c) pcre_scanner.cc: avoid use of std::count() because not all systems
+ have it.
+
+ (d) Split off pcrecpparg.h from pcrecpp.h and had the former built by
+ "configure" and the latter not, in order to fix a problem somebody had
+ with compiling the Arg class on HP-UX.
+
+ (e) Improve the error-handling of the C++ wrapper a little bit.
+
+ (f) New tests for checking recursion limiting.
+
+ 8. The pcre_memmove() function, which is used only if the environment does not
+ have a standard memmove() function (and is therefore rarely compiled),
+ contained two bugs: (a) use of int instead of size_t, and (b) it was not
+ returning a result (though PCRE never actually uses the result).
+
+ 9. In the POSIX regexec() interface, if nmatch is specified as a ridiculously
+ large number - greater than INT_MAX/(3*sizeof(int)) - REG_ESPACE is
+ returned instead of calling malloc() with an overflowing number that would
+ most likely cause subsequent chaos.
+
+10. The debugging option of pcretest was not showing the NO_AUTO_CAPTURE flag.
+
+11. The POSIX flag REG_NOSUB is now supported. When a pattern that was compiled
+ with this option is matched, the nmatch and pmatch options of regexec() are
+ ignored.
+
+12. Added REG_UTF8 to the POSIX interface. This is not defined by POSIX, but is
+ provided in case anyone wants to the the POSIX interface with UTF-8
+ strings.
+
+13. Added CXXLDFLAGS to the Makefile parameters to provide settings only on the
+ C++ linking (needed for some HP-UX environments).
+
+14. Avoid compiler warnings in get_ucpname() when compiled without UCP support
+ (unused parameter) and in the pcre_printint() function (omitted "default"
+ switch label when the default is to do nothing).
+
+15. Added some code to make it possible, when PCRE is compiled as a C++
+ library, to replace subject pointers for pcre_exec() with a smart pointer
+ class, thus making it possible to process discontinuous strings.
+
+16. The two macros PCRE_EXPORT and PCRE_DATA_SCOPE are confusing, and perform
+ much the same function. They were added by different people who were trying
+ to make PCRE easy to compile on non-Unix systems. It has been suggested
+ that PCRE_EXPORT be abolished now that there is more automatic apparatus
+ for compiling on Windows systems. I have therefore replaced it with
+ PCRE_DATA_SCOPE. This is set automatically for Windows; if not set it
+ defaults to "extern" for C or "extern C" for C++, which works fine on
+ Unix-like systems. It is now possible to override the value of PCRE_DATA_
+ SCOPE with something explicit in config.h. In addition:
+
+ (a) pcreposix.h still had just "extern" instead of either of these macros;
+ I have replaced it with PCRE_DATA_SCOPE.
+
+ (b) Functions such as _pcre_xclass(), which are internal to the library,
+ but external in the C sense, all had PCRE_EXPORT in their definitions.
+ This is apparently wrong for the Windows case, so I have removed it.
+ (It makes no difference on Unix-like systems.)
+
+17. Added a new limit, MATCH_LIMIT_RECURSION, which limits the depth of nesting
+ of recursive calls to match(). This is different to MATCH_LIMIT because
+ that limits the total number of calls to match(), not all of which increase
+ the depth of recursion. Limiting the recursion depth limits the amount of
+ stack (or heap if NO_RECURSE is set) that is used. The default can be set
+ when PCRE is compiled, and changed at run time. A patch from Google adds
+ this functionality to the C++ interface.
+
+18. Changes to the handling of Unicode character properties:
+
+ (a) Updated the table to Unicode 4.1.0.
+
+ (b) Recognize characters that are not in the table as "Cn" (undefined).
+
+ (c) I revised the way the table is implemented to a much improved format
+ which includes recognition of ranges. It now supports the ranges that
+ are defined in UnicodeData.txt, and it also amalgamates other
+ characters into ranges. This has reduced the number of entries in the
+ table from around 16,000 to around 3,000, thus reducing its size
+ considerably. I realized I did not need to use a tree structure after
+ all - a binary chop search is just as efficient. Having reduced the
+ number of entries, I extended their size from 6 bytes to 8 bytes to
+ allow for more data.
+
+ (d) Added support for Unicode script names via properties such as \p{Han}.
+
+19. In UTF-8 mode, a backslash followed by a non-Ascii character was not
+ matching that character.
+
+20. When matching a repeated Unicode property with a minimum greater than zero,
+ (for example \pL{2,}), PCRE could look past the end of the subject if it
+ reached it while seeking the minimum number of characters. This could
+ happen only if some of the characters were more than one byte long, because
+ there is a check for at least the minimum number of bytes.
+
+21. Refactored the implementation of \p and \P so as to be more general, to
+ allow for more different types of property in future. This has changed the
+ compiled form incompatibly. Anybody with saved compiled patterns that use
+ \p or \P will have to recompile them.
+
+22. Added "Any" and "L&" to the supported property types.
+
+23. Recognize \x{...} as a code point specifier, even when not in UTF-8 mode,
+ but give a compile time error if the value is greater than 0xff.
+
+24. The man pages for pcrepartial, pcreprecompile, and pcre_compile2 were
+ accidentally not being installed or uninstalled.
+
+25. The pcre.h file was built from pcre.h.in, but the only changes that were
+ made were to insert the current release number. This seemed silly, because
+ it made things harder for people building PCRE on systems that don't run
+ "configure". I have turned pcre.h into a distributed file, no longer built
+ by "configure", with the version identification directly included. There is
+ no longer a pcre.h.in file.
+
+ However, this change necessitated a change to the pcre-config script as
+ well. It is built from pcre-config.in, and one of the substitutions was the
+ release number. I have updated configure.ac so that ./configure now finds
+ the release number by grepping pcre.h.
+
+26. Added the ability to run the tests under valgrind.
+
+
+Version 6.4 05-Sep-05
+---------------------
+
+ 1. Change 6.0/10/(l) to pcregrep introduced a bug that caused separator lines
+ "--" to be printed when multiple files were scanned, even when none of the
+ -A, -B, or -C options were used. This is not compatible with Gnu grep, so I
+ consider it to be a bug, and have restored the previous behaviour.
+
+ 2. A couple of code tidies to get rid of compiler warnings.
+
+ 3. The pcretest program used to cheat by referring to symbols in the library
+ whose names begin with _pcre_. These are internal symbols that are not
+ really supposed to be visible externally, and in some environments it is
+ possible to suppress them. The cheating is now confined to including
+ certain files from the library's source, which is a bit cleaner.
+
+ 4. Renamed pcre.in as pcre.h.in to go with pcrecpp.h.in; it also makes the
+ file's purpose clearer.
+
+ 5. Reorganized pcre_ucp_findchar().
+
+
+Version 6.3 15-Aug-05
+---------------------
+
+ 1. The file libpcre.pc.in did not have general read permission in the tarball.
+
+ 2. There were some problems when building without C++ support:
+
+ (a) If C++ support was not built, "make install" and "make test" still
+ tried to test it.
+
+ (b) There were problems when the value of CXX was explicitly set. Some
+ changes have been made to try to fix these, and ...
+
+ (c) --disable-cpp can now be used to explicitly disable C++ support.
+
+ (d) The use of @CPP_OBJ@ directly caused a blank line preceded by a
+ backslash in a target when C++ was disabled. This confuses some
+ versions of "make", apparently. Using an intermediate variable solves
+ this. (Same for CPP_LOBJ.)
+
+ 3. $(LINK_FOR_BUILD) now includes $(CFLAGS_FOR_BUILD) and $(LINK)
+ (non-Windows) now includes $(CFLAGS) because these flags are sometimes
+ necessary on certain architectures.
+
+ 4. Added a setting of -export-symbols-regex to the link command to remove
+ those symbols that are exported in the C sense, but actually are local
+ within the library, and not documented. Their names all begin with
+ "_pcre_". This is not a perfect job, because (a) we have to except some
+ symbols that pcretest ("illegally") uses, and (b) the facility isn't always
+ available (and never for static libraries). I have made a note to try to
+ find a way round (a) in the future.
+
+
+Version 6.2 01-Aug-05
+---------------------
+
+ 1. There was no test for integer overflow of quantifier values. A construction
+ such as {1111111111111111} would give undefined results. What is worse, if
+ a minimum quantifier for a parenthesized subpattern overflowed and became
+ negative, the calculation of the memory size went wrong. This could have
+ led to memory overwriting.
+
+ 2. Building PCRE using VPATH was broken. Hopefully it is now fixed.
+
+ 3. Added "b" to the 2nd argument of fopen() in dftables.c, for non-Unix-like
+ operating environments where this matters.
+
+ 4. Applied Giuseppe Maxia's patch to add additional features for controlling
+ PCRE options from within the C++ wrapper.
+
+ 5. Named capturing subpatterns were not being correctly counted when a pattern
+ was compiled. This caused two problems: (a) If there were more than 100
+ such subpatterns, the calculation of the memory needed for the whole
+ compiled pattern went wrong, leading to an overflow error. (b) Numerical
+ back references of the form \12, where the number was greater than 9, were
+ not recognized as back references, even though there were sufficient
+ previous subpatterns.
+
+ 6. Two minor patches to pcrecpp.cc in order to allow it to compile on older
+ versions of gcc, e.g. 2.95.4.
+
+
+Version 6.1 21-Jun-05
+---------------------
+
+ 1. There was one reference to the variable "posix" in pcretest.c that was not
+ surrounded by "#if !defined NOPOSIX".
+
+ 2. Make it possible to compile pcretest without DFA support, UTF8 support, or
+ the cross-check on the old pcre_info() function, for the benefit of the
+ cut-down version of PCRE that is currently imported into Exim.
+
+ 3. A (silly) pattern starting with (?i)(?-i) caused an internal space
+ allocation error. I've done the easy fix, which wastes 2 bytes for sensible
+ patterns that start (?i) but I don't think that matters. The use of (?i) is
+ just an example; this all applies to the other options as well.
+
+ 4. Since libtool seems to echo the compile commands it is issuing, the output
+ from "make" can be reduced a bit by putting "@" in front of each libtool
+ compile command.
+
+ 5. Patch from the folks at Google for configure.in to be a bit more thorough
+ in checking for a suitable C++ installation before trying to compile the
+ C++ stuff. This should fix a reported problem when a compiler was present,
+ but no suitable headers.
+
+ 6. The man pages all had just "PCRE" as their title. I have changed them to
+ be the relevant file name. I have also arranged that these names are
+ retained in the file doc/pcre.txt, which is a concatenation in text format
+ of all the man pages except the little individual ones for each function.
+
+ 7. The NON-UNIX-USE file had not been updated for the different set of source
+ files that come with release 6. I also added a few comments about the C++
+ wrapper.
+
+
+Version 6.0 07-Jun-05
+---------------------
+
+ 1. Some minor internal re-organization to help with my DFA experiments.
+
+ 2. Some missing #ifdef SUPPORT_UCP conditionals in pcretest and printint that
+ didn't matter for the library itself when fully configured, but did matter
+ when compiling without UCP support, or within Exim, where the ucp files are
+ not imported.
+
+ 3. Refactoring of the library code to split up the various functions into
+ different source modules. The addition of the new DFA matching code (see
+ below) to a single monolithic source would have made it really too
+ unwieldy, quite apart from causing all the code to be include in a
+ statically linked application, when only some functions are used. This is
+ relevant even without the DFA addition now that patterns can be compiled in
+ one application and matched in another.
+
+ The downside of splitting up is that there have to be some external
+ functions and data tables that are used internally in different modules of
+ the library but which are not part of the API. These have all had their
+ names changed to start with "_pcre_" so that they are unlikely to clash
+ with other external names.
+
+ 4. Added an alternate matching function, pcre_dfa_exec(), which matches using
+ a different (DFA) algorithm. Although it is slower than the original
+ function, it does have some advantages for certain types of matching
+ problem.
+
+ 5. Upgrades to pcretest in order to test the features of pcre_dfa_exec(),
+ including restarting after a partial match.
+
+ 6. A patch for pcregrep that defines INVALID_FILE_ATTRIBUTES if it is not
+ defined when compiling for Windows was sent to me. I have put it into the
+ code, though I have no means of testing or verifying it.
+
+ 7. Added the pcre_refcount() auxiliary function.
+
+ 8. Added the PCRE_FIRSTLINE option. This constrains an unanchored pattern to
+ match before or at the first newline in the subject string. In pcretest,
+ the /f option on a pattern can be used to set this.
+
+ 9. A repeated \w when used in UTF-8 mode with characters greater than 256
+ would behave wrongly. This has been present in PCRE since release 4.0.
+
+10. A number of changes to the pcregrep command:
+
+ (a) Refactored how -x works; insert ^(...)$ instead of setting
+ PCRE_ANCHORED and checking the length, in preparation for adding
+ something similar for -w.
+
+ (b) Added the -w (match as a word) option.
+
+ (c) Refactored the way lines are read and buffered so as to have more
+ than one at a time available.
+
+ (d) Implemented a pcregrep test script.
+
+ (e) Added the -M (multiline match) option. This allows patterns to match
+ over several lines of the subject. The buffering ensures that at least
+ 8K, or the rest of the document (whichever is the shorter) is available
+ for matching (and similarly the previous 8K for lookbehind assertions).
+
+ (f) Changed the --help output so that it now says
+
+ -w, --word-regex(p)
+
+ instead of two lines, one with "regex" and the other with "regexp"
+ because that confused at least one person since the short forms are the
+ same. (This required a bit of code, as the output is generated
+ automatically from a table. It wasn't just a text change.)
+
+ (g) -- can be used to terminate pcregrep options if the next thing isn't an
+ option but starts with a hyphen. Could be a pattern or a path name
+ starting with a hyphen, for instance.
+
+ (h) "-" can be given as a file name to represent stdin.
+
+ (i) When file names are being printed, "(standard input)" is used for
+ the standard input, for compatibility with GNU grep. Previously
+ "<stdin>" was used.
+
+ (j) The option --label=xxx can be used to supply a name to be used for
+ stdin when file names are being printed. There is no short form.
+
+ (k) Re-factored the options decoding logic because we are going to add
+ two more options that take data. Such options can now be given in four
+ different ways, e.g. "-fname", "-f name", "--file=name", "--file name".
+
+ (l) Added the -A, -B, and -C options for requesting that lines of context
+ around matches be printed.
+
+ (m) Added the -L option to print the names of files that do not contain
+ any matching lines, that is, the complement of -l.
+
+ (n) The return code is 2 if any file cannot be opened, but pcregrep does
+ continue to scan other files.
+
+ (o) The -s option was incorrectly implemented. For compatibility with other
+ greps, it now suppresses the error message for a non-existent or non-
+ accessible file (but not the return code). There is a new option called
+ -q that suppresses the output of matching lines, which was what -s was
+ previously doing.
+
+ (p) Added --include and --exclude options to specify files for inclusion
+ and exclusion when recursing.
+
+11. The Makefile was not using the Autoconf-supported LDFLAGS macro properly.
+ Hopefully, it now does.
+
+12. Missing cast in pcre_study().
+
+13. Added an "uninstall" target to the makefile.
+
+14. Replaced "extern" in the function prototypes in Makefile.in with
+ "PCRE_DATA_SCOPE", which defaults to 'extern' or 'extern "C"' in the Unix
+ world, but is set differently for Windows.
+
+15. Added a second compiling function called pcre_compile2(). The only
+ difference is that it has an extra argument, which is a pointer to an
+ integer error code. When there is a compile-time failure, this is set
+ non-zero, in addition to the error test pointer being set to point to an
+ error message. The new argument may be NULL if no error number is required
+ (but then you may as well call pcre_compile(), which is now just a
+ wrapper). This facility is provided because some applications need a
+ numeric error indication, but it has also enabled me to tidy up the way
+ compile-time errors are handled in the POSIX wrapper.
+
+16. Added VPATH=.libs to the makefile; this should help when building with one
+ prefix path and installing with another. (Or so I'm told by someone who
+ knows more about this stuff than I do.)
+
+17. Added a new option, REG_DOTALL, to the POSIX function regcomp(). This
+ passes PCRE_DOTALL to the pcre_compile() function, making the "." character
+ match everything, including newlines. This is not POSIX-compatible, but
+ somebody wanted the feature. From pcretest it can be activated by using
+ both the P and the s flags.
+
+18. AC_PROG_LIBTOOL appeared twice in Makefile.in. Removed one.
+
+19. libpcre.pc was being incorrectly installed as executable.
+
+20. A couple of places in pcretest check for end-of-line by looking for '\n';
+ it now also looks for '\r' so that it will work unmodified on Windows.
+
+21. Added Google's contributed C++ wrapper to the distribution.
+
+22. Added some untidy missing memory free() calls in pcretest, to keep
+ Electric Fence happy when testing.
+
+
+
+Version 5.0 13-Sep-04
+---------------------
+
+ 1. Internal change: literal characters are no longer packed up into items
+ containing multiple characters in a single byte-string. Each character
+ is now matched using a separate opcode. However, there may be more than one
+ byte in the character in UTF-8 mode.
+
+ 2. The pcre_callout_block structure has two new fields: pattern_position and
+ next_item_length. These contain the offset in the pattern to the next match
+ item, and its length, respectively.
+
+ 3. The PCRE_AUTO_CALLOUT option for pcre_compile() requests the automatic
+ insertion of callouts before each pattern item. Added the /C option to
+ pcretest to make use of this.
+
+ 4. On the advice of a Windows user, the lines
+
+ #if defined(_WIN32) || defined(WIN32)
+ _setmode( _fileno( stdout ), 0x8000 );
+ #endif /* defined(_WIN32) || defined(WIN32) */
+
+ have been added to the source of pcretest. This apparently does useful
+ magic in relation to line terminators.
+
+ 5. Changed "r" and "w" in the calls to fopen() in pcretest to "rb" and "wb"
+ for the benefit of those environments where the "b" makes a difference.
+
+ 6. The icc compiler has the same options as gcc, but "configure" doesn't seem
+ to know about it. I have put a hack into configure.in that adds in code
+ to set GCC=yes if CC=icc. This seems to end up at a point in the
+ generated configure script that is early enough to affect the setting of
+ compiler options, which is what is needed, but I have no means of testing
+ whether it really works. (The user who reported this had patched the
+ generated configure script, which of course I cannot do.)
+
+ LATER: After change 22 below (new libtool files), the configure script
+ seems to know about icc (and also ecc). Therefore, I have commented out
+ this hack in configure.in.
+
+ 7. Added support for pkg-config (2 patches were sent in).
+
+ 8. Negated POSIX character classes that used a combination of internal tables
+ were completely broken. These were [[:^alpha:]], [[:^alnum:]], and
+ [[:^ascii]]. Typically, they would match almost any characters. The other
+ POSIX classes were not broken in this way.
+
+ 9. Matching the pattern "\b.*?" against "ab cd", starting at offset 1, failed
+ to find the match, as PCRE was deluded into thinking that the match had to
+ start at the start point or following a newline. The same bug applied to
+ patterns with negative forward assertions or any backward assertions
+ preceding ".*" at the start, unless the pattern required a fixed first
+ character. This was a failing pattern: "(?!.bcd).*". The bug is now fixed.
+
+10. In UTF-8 mode, when moving forwards in the subject after a failed match
+ starting at the last subject character, bytes beyond the end of the subject
+ string were read.
+
+11. Renamed the variable "class" as "classbits" to make life easier for C++
+ users. (Previously there was a macro definition, but it apparently wasn't
+ enough.)
+
+12. Added the new field "tables" to the extra data so that tables can be passed
+ in at exec time, or the internal tables can be re-selected. This allows
+ a compiled regex to be saved and re-used at a later time by a different
+ program that might have everything at different addresses.
+
+13. Modified the pcre-config script so that, when run on Solaris, it shows a
+ -R library as well as a -L library.
+
+14. The debugging options of pcretest (-d on the command line or D on a
+ pattern) showed incorrect output for anything following an extended class
+ that contained multibyte characters and which was followed by a quantifier.
+
+15. Added optional support for general category Unicode character properties
+ via the \p, \P, and \X escapes. Unicode property support implies UTF-8
+ support. It adds about 90K to the size of the library. The meanings of the
+ inbuilt class escapes such as \d and \s have NOT been changed.
+
+16. Updated pcredemo.c to include calls to free() to release the memory for the
+ compiled pattern.
+
+17. The generated file chartables.c was being created in the source directory
+ instead of in the building directory. This caused the build to fail if the
+ source directory was different from the building directory, and was
+ read-only.
+
+18. Added some sample Win commands from Mark Tetrode into the NON-UNIX-USE
+ file. No doubt somebody will tell me if they don't make sense... Also added
+ Dan Mooney's comments about building on OpenVMS.
+
+19. Added support for partial matching via the PCRE_PARTIAL option for
+ pcre_exec() and the \P data escape in pcretest.
+
+20. Extended pcretest with 3 new pattern features:
+
+ (i) A pattern option of the form ">rest-of-line" causes pcretest to
+ write the compiled pattern to the file whose name is "rest-of-line".
+ This is a straight binary dump of the data, with the saved pointer to
+ the character tables forced to be NULL. The study data, if any, is
+ written too. After writing, pcretest reads a new pattern.
+
+ (ii) If, instead of a pattern, "<rest-of-line" is given, pcretest reads a
+ compiled pattern from the given file. There must not be any
+ occurrences of "<" in the file name (pretty unlikely); if there are,
+ pcretest will instead treat the initial "<" as a pattern delimiter.
+ After reading in the pattern, pcretest goes on to read data lines as
+ usual.
+
+ (iii) The F pattern option causes pcretest to flip the bytes in the 32-bit
+ and 16-bit fields in a compiled pattern, to simulate a pattern that
+ was compiled on a host of opposite endianness.
+
+21. The pcre-exec() function can now cope with patterns that were compiled on
+ hosts of opposite endianness, with this restriction:
+
+ As for any compiled expression that is saved and used later, the tables
+ pointer field cannot be preserved; the extra_data field in the arguments
+ to pcre_exec() should be used to pass in a tables address if a value
+ other than the default internal tables were used at compile time.
+
+22. Calling pcre_exec() with a negative value of the "ovecsize" parameter is
+ now diagnosed as an error. Previously, most of the time, a negative number
+ would have been treated as zero, but if in addition "ovector" was passed as
+ NULL, a crash could occur.
+
+23. Updated the files ltmain.sh, config.sub, config.guess, and aclocal.m4 with
+ new versions from the libtool 1.5 distribution (the last one is a copy of
+ a file called libtool.m4). This seems to have fixed the need to patch
+ "configure" to support Darwin 1.3 (which I used to do). However, I still
+ had to patch ltmain.sh to ensure that ${SED} is set (it isn't on my
+ workstation).
+
+24. Changed the PCRE licence to be the more standard "BSD" licence.
+
+
+Version 4.5 01-Dec-03
+---------------------
+
+ 1. There has been some re-arrangement of the code for the match() function so
+ that it can be compiled in a version that does not call itself recursively.
+ Instead, it keeps those local variables that need separate instances for
+ each "recursion" in a frame on the heap, and gets/frees frames whenever it
+ needs to "recurse". Keeping track of where control must go is done by means
+ of setjmp/longjmp. The whole thing is implemented by a set of macros that
+ hide most of the details from the main code, and operates only if
+ NO_RECURSE is defined while compiling pcre.c. If PCRE is built using the
+ "configure" mechanism, "--disable-stack-for-recursion" turns on this way of
+ operating.
+
+ To make it easier for callers to provide specially tailored get/free
+ functions for this usage, two new functions, pcre_stack_malloc, and
+ pcre_stack_free, are used. They are always called in strict stacking order,
+ and the size of block requested is always the same.
+
+ The PCRE_CONFIG_STACKRECURSE info parameter can be used to find out whether
+ PCRE has been compiled to use the stack or the heap for recursion. The
+ -C option of pcretest uses this to show which version is compiled.
+
+ A new data escape \S, is added to pcretest; it causes the amounts of store
+ obtained and freed by both kinds of malloc/free at match time to be added
+ to the output.
+
+ 2. Changed the locale test to use "fr_FR" instead of "fr" because that's
+ what's available on my current Linux desktop machine.
+
+ 3. When matching a UTF-8 string, the test for a valid string at the start has
+ been extended. If start_offset is not zero, PCRE now checks that it points
+ to a byte that is the start of a UTF-8 character. If not, it returns
+ PCRE_ERROR_BADUTF8_OFFSET (-11). Note: the whole string is still checked;
+ this is necessary because there may be backward assertions in the pattern.
+ When matching the same subject several times, it may save resources to use
+ PCRE_NO_UTF8_CHECK on all but the first call if the string is long.
+
+ 4. The code for checking the validity of UTF-8 strings has been tightened so
+ that it rejects (a) strings containing 0xfe or 0xff bytes and (b) strings
+ containing "overlong sequences".
+
+ 5. Fixed a bug (appearing twice) that I could not find any way of exploiting!
+ I had written "if ((digitab[*p++] && chtab_digit) == 0)" where the "&&"
+ should have been "&", but it just so happened that all the cases this let
+ through by mistake were picked up later in the function.
+
+ 6. I had used a variable called "isblank" - this is a C99 function, causing
+ some compilers to warn. To avoid this, I renamed it (as "blankclass").
+
+ 7. Cosmetic: (a) only output another newline at the end of pcretest if it is
+ prompting; (b) run "./pcretest /dev/null" at the start of the test script
+ so the version is shown; (c) stop "make test" echoing "./RunTest".
+
+ 8. Added patches from David Burgess to enable PCRE to run on EBCDIC systems.
+
+ 9. The prototype for memmove() for systems that don't have it was using
+ size_t, but the inclusion of the header that defines size_t was later. I've
+ moved the #includes for the C headers earlier to avoid this.
+
+10. Added some adjustments to the code to make it easier to compiler on certain
+ special systems:
+
+ (a) Some "const" qualifiers were missing.
+ (b) Added the macro EXPORT before all exported functions; by default this
+ is defined to be empty.
+ (c) Changed the dftables auxiliary program (that builds chartables.c) so
+ that it reads its output file name as an argument instead of writing
+ to the standard output and assuming this can be redirected.
+
+11. In UTF-8 mode, if a recursive reference (e.g. (?1)) followed a character
+ class containing characters with values greater than 255, PCRE compilation
+ went into a loop.
+
+12. A recursive reference to a subpattern that was within another subpattern
+ that had a minimum quantifier of zero caused PCRE to crash. For example,
+ (x(y(?2))z)? provoked this bug with a subject that got as far as the
+ recursion. If the recursively-called subpattern itself had a zero repeat,
+ that was OK.
+
+13. In pcretest, the buffer for reading a data line was set at 30K, but the
+ buffer into which it was copied (for escape processing) was still set at
+ 1024, so long lines caused crashes.
+
+14. A pattern such as /[ab]{1,3}+/ failed to compile, giving the error
+ "internal error: code overflow...". This applied to any character class
+ that was followed by a possessive quantifier.
+
+15. Modified the Makefile to add libpcre.la as a prerequisite for
+ libpcreposix.la because I was told this is needed for a parallel build to
+ work.
+
+16. If a pattern that contained .* following optional items at the start was
+ studied, the wrong optimizing data was generated, leading to matching
+ errors. For example, studying /[ab]*.*c/ concluded, erroneously, that any
+ matching string must start with a or b or c. The correct conclusion for
+ this pattern is that a match can start with any character.
+
+
+Version 4.4 13-Aug-03
+---------------------
+
+ 1. In UTF-8 mode, a character class containing characters with values between
+ 127 and 255 was not handled correctly if the compiled pattern was studied.
+ In fixing this, I have also improved the studying algorithm for such
+ classes (slightly).
+
+ 2. Three internal functions had redundant arguments passed to them. Removal
+ might give a very teeny performance improvement.
+
+ 3. Documentation bug: the value of the capture_top field in a callout is *one
+ more than* the number of the hightest numbered captured substring.
+
+ 4. The Makefile linked pcretest and pcregrep with -lpcre, which could result
+ in incorrectly linking with a previously installed version. They now link
+ explicitly with libpcre.la.
+
+ 5. configure.in no longer needs to recognize Cygwin specially.
+
+ 6. A problem in pcre.in for Windows platforms is fixed.
+
+ 7. If a pattern was successfully studied, and the -d (or /D) flag was given to
+ pcretest, it used to include the size of the study block as part of its
+ output. Unfortunately, the structure contains a field that has a different
+ size on different hardware architectures. This meant that the tests that
+ showed this size failed. As the block is currently always of a fixed size,
+ this information isn't actually particularly useful in pcretest output, so
+ I have just removed it.
+
+ 8. Three pre-processor statements accidentally did not start in column 1.
+ Sadly, there are *still* compilers around that complain, even though
+ standard C has not required this for well over a decade. Sigh.
+
+ 9. In pcretest, the code for checking callouts passed small integers in the
+ callout_data field, which is a void * field. However, some picky compilers
+ complained about the casts involved for this on 64-bit systems. Now
+ pcretest passes the address of the small integer instead, which should get
+ rid of the warnings.
+
+10. By default, when in UTF-8 mode, PCRE now checks for valid UTF-8 strings at
+ both compile and run time, and gives an error if an invalid UTF-8 sequence
+ is found. There is a option for disabling this check in cases where the
+ string is known to be correct and/or the maximum performance is wanted.
+
+11. In response to a bug report, I changed one line in Makefile.in from
+
+ -Wl,--out-implib,.libs/lib@WIN_PREFIX@pcreposix.dll.a \
+ to
+ -Wl,--out-implib,.libs/@WIN_PREFIX@libpcreposix.dll.a \
+
+ to look similar to other lines, but I have no way of telling whether this
+ is the right thing to do, as I do not use Windows. No doubt I'll get told
+ if it's wrong...
+
+
+Version 4.3 21-May-03
+---------------------
+
+1. Two instances of @WIN_PREFIX@ omitted from the Windows targets in the
+ Makefile.
+
+2. Some refactoring to improve the quality of the code:
+
+ (i) The utf8_table... variables are now declared "const".
+
+ (ii) The code for \cx, which used the "case flipping" table to upper case
+ lower case letters, now just substracts 32. This is ASCII-specific,
+ but the whole concept of \cx is ASCII-specific, so it seems
+ reasonable.
+
+ (iii) PCRE was using its character types table to recognize decimal and
+ hexadecimal digits in the pattern. This is silly, because it handles
+ only 0-9, a-f, and A-F, but the character types table is locale-
+ specific, which means strange things might happen. A private
+ table is now used for this - though it costs 256 bytes, a table is
+ much faster than multiple explicit tests. Of course, the standard
+ character types table is still used for matching digits in subject
+ strings against \d.
+
+ (iv) Strictly, the identifier ESC_t is reserved by POSIX (all identifiers
+ ending in _t are). So I've renamed it as ESC_tee.
+
+3. The first argument for regexec() in the POSIX wrapper should have been
+ defined as "const".
+
+4. Changed pcretest to use malloc() for its buffers so that they can be
+ Electric Fenced for debugging.
+
+5. There were several places in the code where, in UTF-8 mode, PCRE would try
+ to read one or more bytes before the start of the subject string. Often this
+ had no effect on PCRE's behaviour, but in some circumstances it could
+ provoke a segmentation fault.
+
+6. A lookbehind at the start of a pattern in UTF-8 mode could also cause PCRE
+ to try to read one or more bytes before the start of the subject string.
+
+7. A lookbehind in a pattern matched in non-UTF-8 mode on a PCRE compiled with
+ UTF-8 support could misbehave in various ways if the subject string
+ contained bytes with the 0x80 bit set and the 0x40 bit unset in a lookbehind
+ area. (PCRE was not checking for the UTF-8 mode flag, and trying to move
+ back over UTF-8 characters.)
+
+
+Version 4.2 14-Apr-03
+---------------------
+
+1. Typo "#if SUPPORT_UTF8" instead of "#ifdef SUPPORT_UTF8" fixed.
+
+2. Changes to the building process, supplied by Ronald Landheer-Cieslak
+ [ON_WINDOWS]: new variable, "#" on non-Windows platforms
+ [NOT_ON_WINDOWS]: new variable, "#" on Windows platforms
+ [WIN_PREFIX]: new variable, "cyg" for Cygwin
+ * Makefile.in: use autoconf substitution for OBJEXT, EXEEXT, BUILD_OBJEXT
+ and BUILD_EXEEXT
+ Note: automatic setting of the BUILD variables is not yet working
+ set CPPFLAGS and BUILD_CPPFLAGS (but don't use yet) - should be used at
+ compile-time but not at link-time
+ [LINK]: use for linking executables only
+ make different versions for Windows and non-Windows
+ [LINKLIB]: new variable, copy of UNIX-style LINK, used for linking
+ libraries
+ [LINK_FOR_BUILD]: new variable
+ [OBJEXT]: use throughout
+ [EXEEXT]: use throughout
+ <winshared>: new target
+ <wininstall>: new target
+ <dftables.o>: use native compiler
+ <dftables>: use native linker
+ <install>: handle Windows platform correctly
+ <clean>: ditto
+ <check>: ditto
+ copy DLL to top builddir before testing
+
+ As part of these changes, -no-undefined was removed again. This was reported
+ to give trouble on HP-UX 11.0, so getting rid of it seems like a good idea
+ in any case.
+
+3. Some tidies to get rid of compiler warnings:
+
+ . In the match_data structure, match_limit was an unsigned long int, whereas
+ match_call_count was an int. I've made them both unsigned long ints.
+
+ . In pcretest the fact that a const uschar * doesn't automatically cast to
+ a void * provoked a warning.
+
+ . Turning on some more compiler warnings threw up some "shadow" variables
+ and a few more missing casts.
+
+4. If PCRE was complied with UTF-8 support, but called without the PCRE_UTF8
+ option, a class that contained a single character with a value between 128
+ and 255 (e.g. /[\xFF]/) caused PCRE to crash.
+
+5. If PCRE was compiled with UTF-8 support, but called without the PCRE_UTF8
+ option, a class that contained several characters, but with at least one
+ whose value was between 128 and 255 caused PCRE to crash.
+
+
+Version 4.1 12-Mar-03
+---------------------
+
+1. Compiling with gcc -pedantic found a couple of places where casts were
+needed, and a string in dftables.c that was longer than standard compilers are
+required to support.
+
+2. Compiling with Sun's compiler found a few more places where the code could
+be tidied up in order to avoid warnings.
+
+3. The variables for cross-compiling were called HOST_CC and HOST_CFLAGS; the
+first of these names is deprecated in the latest Autoconf in favour of the name
+CC_FOR_BUILD, because "host" is typically used to mean the system on which the
+compiled code will be run. I can't find a reference for HOST_CFLAGS, but by
+analogy I have changed it to CFLAGS_FOR_BUILD.
+
+4. Added -no-undefined to the linking command in the Makefile, because this is
+apparently helpful for Windows. To make it work, also added "-L. -lpcre" to the
+linking step for the pcreposix library.
+
+5. PCRE was failing to diagnose the case of two named groups with the same
+name.
+
+6. A problem with one of PCRE's optimizations was discovered. PCRE remembers a
+literal character that is needed in the subject for a match, and scans along to
+ensure that it is present before embarking on the full matching process. This
+saves time in cases of nested unlimited repeats that are never going to match.
+Problem: the scan can take a lot of time if the subject is very long (e.g.
+megabytes), thus penalizing straightforward matches. It is now done only if the
+amount of subject to be scanned is less than 1000 bytes.
+
+7. A lesser problem with the same optimization is that it was recording the
+first character of an anchored pattern as "needed", thus provoking a search
+right along the subject, even when the first match of the pattern was going to
+fail. The "needed" character is now not set for anchored patterns, unless it
+follows something in the pattern that is of non-fixed length. Thus, it still
+fulfils its original purpose of finding quick non-matches in cases of nested
+unlimited repeats, but isn't used for simple anchored patterns such as /^abc/.
+
+
+Version 4.0 17-Feb-03
+---------------------
+
+1. If a comment in an extended regex that started immediately after a meta-item
+extended to the end of string, PCRE compiled incorrect data. This could lead to
+all kinds of weird effects. Example: /#/ was bad; /()#/ was bad; /a#/ was not.
+
+2. Moved to autoconf 2.53 and libtool 1.4.2.
+
+3. Perl 5.8 no longer needs "use utf8" for doing UTF-8 things. Consequently,
+the special perltest8 script is no longer needed - all the tests can be run
+from a single perltest script.
+
+4. From 5.004, Perl has not included the VT character (0x0b) in the set defined
+by \s. It has now been removed in PCRE. This means it isn't recognized as
+whitespace in /x regexes too, which is the same as Perl. Note that the POSIX
+class [:space:] *does* include VT, thereby creating a mess.
+
+5. Added the class [:blank:] (a GNU extension from Perl 5.8) to match only
+space and tab.
+
+6. Perl 5.005 was a long time ago. It's time to amalgamate the tests that use
+its new features into the main test script, reducing the number of scripts.
+
+7. Perl 5.8 has changed the meaning of patterns like /a(?i)b/. Earlier versions
+were backward compatible, and made the (?i) apply to the whole pattern, as if
+/i were given. Now it behaves more logically, and applies the option setting
+only to what follows. PCRE has been changed to follow suit. However, if it
+finds options settings right at the start of the pattern, it extracts them into
+the global options, as before. Thus, they show up in the info data.
+
+8. Added support for the \Q...\E escape sequence. Characters in between are
+treated as literals. This is slightly different from Perl in that $ and @ are
+also handled as literals inside the quotes. In Perl, they will cause variable
+interpolation. Note the following examples:
+
+ Pattern PCRE matches Perl matches
+
+ \Qabc$xyz\E abc$xyz abc followed by the contents of $xyz
+ \Qabc\$xyz\E abc\$xyz abc\$xyz
+ \Qabc\E\$\Qxyz\E abc$xyz abc$xyz
+
+For compatibility with Perl, \Q...\E sequences are recognized inside character
+classes as well as outside them.
+
+9. Re-organized 3 code statements in pcretest to avoid "overflow in
+floating-point constant arithmetic" warnings from a Microsoft compiler. Added a
+(size_t) cast to one statement in pcretest and one in pcreposix to avoid
+signed/unsigned warnings.
+
+10. SunOS4 doesn't have strtoul(). This was used only for unpicking the -o
+option for pcretest, so I've replaced it by a simple function that does just
+that job.
+
+11. pcregrep was ending with code 0 instead of 2 for the commands "pcregrep" or
+"pcregrep -".
+
+12. Added "possessive quantifiers" ?+, *+, ++, and {,}+ which come from Sun's
+Java package. This provides some syntactic sugar for simple cases of what my
+documentation calls "once-only subpatterns". A pattern such as x*+ is the same
+as (?>x*). In other words, if what is inside (?>...) is just a single repeated
+item, you can use this simplified notation. Note that only makes sense with
+greedy quantifiers. Consequently, the use of the possessive quantifier forces
+greediness, whatever the setting of the PCRE_UNGREEDY option.
+
+13. A change of greediness default within a pattern was not taking effect at
+the current level for patterns like /(b+(?U)a+)/. It did apply to parenthesized
+subpatterns that followed. Patterns like /b+(?U)a+/ worked because the option
+was abstracted outside.
+
+14. PCRE now supports the \G assertion. It is true when the current matching
+position is at the start point of the match. This differs from \A when the
+starting offset is non-zero. Used with the /g option of pcretest (or similar
+code), it works in the same way as it does for Perl's /g option. If all
+alternatives of a regex begin with \G, the expression is anchored to the start
+match position, and the "anchored" flag is set in the compiled expression.
+
+15. Some bugs concerning the handling of certain option changes within patterns
+have been fixed. These applied to options other than (?ims). For example,
+"a(?x: b c )d" did not match "XabcdY" but did match "Xa b c dY". It should have
+been the other way round. Some of this was related to change 7 above.
+
+16. PCRE now gives errors for /[.x.]/ and /[=x=]/ as unsupported POSIX
+features, as Perl does. Previously, PCRE gave the warnings only for /[[.x.]]/
+and /[[=x=]]/. PCRE now also gives an error for /[:name:]/ because it supports
+POSIX classes only within a class (e.g. /[[:alpha:]]/).
+
+17. Added support for Perl's \C escape. This matches one byte, even in UTF8
+mode. Unlike ".", it always matches newline, whatever the setting of
+PCRE_DOTALL. However, PCRE does not permit \C to appear in lookbehind
+assertions. Perl allows it, but it doesn't (in general) work because it can't
+calculate the length of the lookbehind. At least, that's the case for Perl
+5.8.0 - I've been told they are going to document that it doesn't work in
+future.
+
+18. Added an error diagnosis for escapes that PCRE does not support: these are
+\L, \l, \N, \P, \p, \U, \u, and \X.
+
+19. Although correctly diagnosing a missing ']' in a character class, PCRE was
+reading past the end of the pattern in cases such as /[abcd/.
+
+20. PCRE was getting more memory than necessary for patterns with classes that
+contained both POSIX named classes and other characters, e.g. /[[:space:]abc/.
+
+21. Added some code, conditional on #ifdef VPCOMPAT, to make life easier for
+compiling PCRE for use with Virtual Pascal.
+
+22. Small fix to the Makefile to make it work properly if the build is done
+outside the source tree.
+
+23. Added a new extension: a condition to go with recursion. If a conditional
+subpattern starts with (?(R) the "true" branch is used if recursion has
+happened, whereas the "false" branch is used only at the top level.
+
+24. When there was a very long string of literal characters (over 255 bytes
+without UTF support, over 250 bytes with UTF support), the computation of how
+much memory was required could be incorrect, leading to segfaults or other
+strange effects.
+
+25. PCRE was incorrectly assuming anchoring (either to start of subject or to
+start of line for a non-DOTALL pattern) when a pattern started with (.*) and
+there was a subsequent back reference to those brackets. This meant that, for
+example, /(.*)\d+\1/ failed to match "abc123bc". Unfortunately, it isn't
+possible to check for precisely this case. All we can do is abandon the
+optimization if .* occurs inside capturing brackets when there are any back
+references whatsoever. (See below for a better fix that came later.)
+
+26. The handling of the optimization for finding the first character of a
+non-anchored pattern, and for finding a character that is required later in the
+match were failing in some cases. This didn't break the matching; it just
+failed to optimize when it could. The way this is done has been re-implemented.
+
+27. Fixed typo in error message for invalid (?R item (it said "(?p").
+
+28. Added a new feature that provides some of the functionality that Perl
+provides with (?{...}). The facility is termed a "callout". The way it is done
+in PCRE is for the caller to provide an optional function, by setting
+pcre_callout to its entry point. Like pcre_malloc and pcre_free, this is a
+global variable. By default it is unset, which disables all calling out. To get
+the function called, the regex must include (?C) at appropriate points. This
+is, in fact, equivalent to (?C0), and any number <= 255 may be given with (?C).
+This provides a means of identifying different callout points. When PCRE
+reaches such a point in the regex, if pcre_callout has been set, the external
+function is called. It is provided with data in a structure called
+pcre_callout_block, which is defined in pcre.h. If the function returns 0,
+matching continues; if it returns a non-zero value, the match at the current
+point fails. However, backtracking will occur if possible. [This was changed
+later and other features added - see item 49 below.]
+
+29. pcretest is upgraded to test the callout functionality. It provides a
+callout function that displays information. By default, it shows the start of
+the match and the current position in the text. There are some new data escapes
+to vary what happens:
+
+ \C+ in addition, show current contents of captured substrings
+ \C- do not supply a callout function
+ \C!n return 1 when callout number n is reached
+ \C!n!m return 1 when callout number n is reached for the mth time
+
+30. If pcregrep was called with the -l option and just a single file name, it
+output "<stdin>" if a match was found, instead of the file name.
+
+31. Improve the efficiency of the POSIX API to PCRE. If the number of capturing
+slots is less than POSIX_MALLOC_THRESHOLD, use a block on the stack to pass to
+pcre_exec(). This saves a malloc/free per call. The default value of
+POSIX_MALLOC_THRESHOLD is 10; it can be changed by --with-posix-malloc-threshold
+when configuring.
+
+32. The default maximum size of a compiled pattern is 64K. There have been a
+few cases of people hitting this limit. The code now uses macros to handle the
+storing of links as offsets within the compiled pattern. It defaults to 2-byte
+links, but this can be changed to 3 or 4 bytes by --with-link-size when
+configuring. Tests 2 and 5 work only with 2-byte links because they output
+debugging information about compiled patterns.
+
+33. Internal code re-arrangements:
+
+(a) Moved the debugging function for printing out a compiled regex into
+ its own source file (printint.c) and used #include to pull it into
+ pcretest.c and, when DEBUG is defined, into pcre.c, instead of having two
+ separate copies.
+
+(b) Defined the list of op-code names for debugging as a macro in
+ internal.h so that it is next to the definition of the opcodes.
+
+(c) Defined a table of op-code lengths for simpler skipping along compiled
+ code. This is again a macro in internal.h so that it is next to the
+ definition of the opcodes.
+
+34. Added support for recursive calls to individual subpatterns, along the
+lines of Robin Houston's patch (but implemented somewhat differently).
+
+35. Further mods to the Makefile to help Win32. Also, added code to pcregrep to
+allow it to read and process whole directories in Win32. This code was
+contributed by Lionel Fourquaux; it has not been tested by me.
+
+36. Added support for named subpatterns. The Python syntax (?P<name>...) is
+used to name a group. Names consist of alphanumerics and underscores, and must
+be unique. Back references use the syntax (?P=name) and recursive calls use
+(?P>name) which is a PCRE extension to the Python extension. Groups still have
+numbers. The function pcre_fullinfo() can be used after compilation to extract
+a name/number map. There are three relevant calls:
+
+ PCRE_INFO_NAMEENTRYSIZE yields the size of each entry in the map
+ PCRE_INFO_NAMECOUNT yields the number of entries
+ PCRE_INFO_NAMETABLE yields a pointer to the map.
+
+The map is a vector of fixed-size entries. The size of each entry depends on
+the length of the longest name used. The first two bytes of each entry are the
+group number, most significant byte first. There follows the corresponding
+name, zero terminated. The names are in alphabetical order.
+
+37. Make the maximum literal string in the compiled code 250 for the non-UTF-8
+case instead of 255. Making it the same both with and without UTF-8 support
+means that the same test output works with both.
+
+38. There was a case of malloc(0) in the POSIX testing code in pcretest. Avoid
+calling malloc() with a zero argument.
+
+39. Change 25 above had to resort to a heavy-handed test for the .* anchoring
+optimization. I've improved things by keeping a bitmap of backreferences with
+numbers 1-31 so that if .* occurs inside capturing brackets that are not in
+fact referenced, the optimization can be applied. It is unlikely that a
+relevant occurrence of .* (i.e. one which might indicate anchoring or forcing
+the match to follow \n) will appear inside brackets with a number greater than
+31, but if it does, any back reference > 31 suppresses the optimization.
+
+40. Added a new compile-time option PCRE_NO_AUTO_CAPTURE. This has the effect
+of disabling numbered capturing parentheses. Any opening parenthesis that is
+not followed by ? behaves as if it were followed by ?: but named parentheses
+can still be used for capturing (and they will acquire numbers in the usual
+way).
+
+41. Redesigned the return codes from the match() function into yes/no/error so
+that errors can be passed back from deep inside the nested calls. A malloc
+failure while inside a recursive subpattern call now causes the
+PCRE_ERROR_NOMEMORY return instead of quietly going wrong.
+
+42. It is now possible to set a limit on the number of times the match()
+function is called in a call to pcre_exec(). This facility makes it possible to
+limit the amount of recursion and backtracking, though not in a directly
+obvious way, because the match() function is used in a number of different
+circumstances. The count starts from zero for each position in the subject
+string (for non-anchored patterns). The default limit is, for compatibility, a
+large number, namely 10 000 000. You can change this in two ways:
+
+(a) When configuring PCRE before making, you can use --with-match-limit=n
+ to set a default value for the compiled library.
+
+(b) For each call to pcre_exec(), you can pass a pcre_extra block in which
+ a different value is set. See 45 below.
+
+If the limit is exceeded, pcre_exec() returns PCRE_ERROR_MATCHLIMIT.
+
+43. Added a new function pcre_config(int, void *) to enable run-time extraction
+of things that can be changed at compile time. The first argument specifies
+what is wanted and the second points to where the information is to be placed.
+The current list of available information is:
+
+ PCRE_CONFIG_UTF8
+
+The output is an integer that is set to one if UTF-8 support is available;
+otherwise it is set to zero.
+
+ PCRE_CONFIG_NEWLINE
+
+The output is an integer that it set to the value of the code that is used for
+newline. It is either LF (10) or CR (13).
+
+ PCRE_CONFIG_LINK_SIZE
+
+The output is an integer that contains the number of bytes used for internal
+linkage in compiled expressions. The value is 2, 3, or 4. See item 32 above.
+
+ PCRE_CONFIG_POSIX_MALLOC_THRESHOLD
+
+The output is an integer that contains the threshold above which the POSIX
+interface uses malloc() for output vectors. See item 31 above.
+
+ PCRE_CONFIG_MATCH_LIMIT
+
+The output is an unsigned integer that contains the default limit of the number
+of match() calls in a pcre_exec() execution. See 42 above.
+
+44. pcretest has been upgraded by the addition of the -C option. This causes it
+to extract all the available output from the new pcre_config() function, and to
+output it. The program then exits immediately.
+
+45. A need has arisen to pass over additional data with calls to pcre_exec() in
+order to support additional features. One way would have been to define
+pcre_exec2() (for example) with extra arguments, but this would not have been
+extensible, and would also have required all calls to the original function to
+be mapped to the new one. Instead, I have chosen to extend the mechanism that
+is used for passing in "extra" data from pcre_study().
+
+The pcre_extra structure is now exposed and defined in pcre.h. It currently
+contains the following fields:
+
+ flags a bitmap indicating which of the following fields are set
+ study_data opaque data from pcre_study()
+ match_limit a way of specifying a limit on match() calls for a specific
+ call to pcre_exec()
+ callout_data data for callouts (see 49 below)
+
+The flag bits are also defined in pcre.h, and are
+
+ PCRE_EXTRA_STUDY_DATA
+ PCRE_EXTRA_MATCH_LIMIT
+ PCRE_EXTRA_CALLOUT_DATA
+
+The pcre_study() function now returns one of these new pcre_extra blocks, with
+the actual study data pointed to by the study_data field, and the
+PCRE_EXTRA_STUDY_DATA flag set. This can be passed directly to pcre_exec() as
+before. That is, this change is entirely upwards-compatible and requires no
+change to existing code.
+
+If you want to pass in additional data to pcre_exec(), you can either place it
+in a pcre_extra block provided by pcre_study(), or create your own pcre_extra
+block.
+
+46. pcretest has been extended to test the PCRE_EXTRA_MATCH_LIMIT feature. If a
+data string contains the escape sequence \M, pcretest calls pcre_exec() several
+times with different match limits, until it finds the minimum value needed for
+pcre_exec() to complete. The value is then output. This can be instructive; for
+most simple matches the number is quite small, but for pathological cases it
+gets very large very quickly.
+
+47. There's a new option for pcre_fullinfo() called PCRE_INFO_STUDYSIZE. It
+returns the size of the data block pointed to by the study_data field in a
+pcre_extra block, that is, the value that was passed as the argument to
+pcre_malloc() when PCRE was getting memory in which to place the information
+created by pcre_study(). The fourth argument should point to a size_t variable.
+pcretest has been extended so that this information is shown after a successful
+pcre_study() call when information about the compiled regex is being displayed.
+
+48. Cosmetic change to Makefile: there's no need to have / after $(DESTDIR)
+because what follows is always an absolute path. (Later: it turns out that this
+is more than cosmetic for MinGW, because it doesn't like empty path
+components.)
+
+49. Some changes have been made to the callout feature (see 28 above):
+
+(i) A callout function now has three choices for what it returns:
+
+ 0 => success, carry on matching
+ > 0 => failure at this point, but backtrack if possible
+ < 0 => serious error, return this value from pcre_exec()
+
+ Negative values should normally be chosen from the set of PCRE_ERROR_xxx
+ values. In particular, returning PCRE_ERROR_NOMATCH forces a standard
+ "match failed" error. The error number PCRE_ERROR_CALLOUT is reserved for
+ use by callout functions. It will never be used by PCRE itself.
+
+(ii) The pcre_extra structure (see 45 above) has a void * field called
+ callout_data, with corresponding flag bit PCRE_EXTRA_CALLOUT_DATA. The
+ pcre_callout_block structure has a field of the same name. The contents of
+ the field passed in the pcre_extra structure are passed to the callout
+ function in the corresponding field in the callout block. This makes it
+ easier to use the same callout-containing regex from multiple threads. For
+ testing, the pcretest program has a new data escape
+
+ \C*n pass the number n (may be negative) as callout_data
+
+ If the callout function in pcretest receives a non-zero value as
+ callout_data, it returns that value.
+
+50. Makefile wasn't handling CFLAGS properly when compiling dftables. Also,
+there were some redundant $(CFLAGS) in commands that are now specified as
+$(LINK), which already includes $(CFLAGS).
+
+51. Extensions to UTF-8 support are listed below. These all apply when (a) PCRE
+has been compiled with UTF-8 support *and* pcre_compile() has been compiled
+with the PCRE_UTF8 flag. Patterns that are compiled without that flag assume
+one-byte characters throughout. Note that case-insensitive matching applies
+only to characters whose values are less than 256. PCRE doesn't support the
+notion of cases for higher-valued characters.
+
+(i) A character class whose characters are all within 0-255 is handled as
+ a bit map, and the map is inverted for negative classes. Previously, a
+ character > 255 always failed to match such a class; however it should
+ match if the class was a negative one (e.g. [^ab]). This has been fixed.
+
+(ii) A negated character class with a single character < 255 is coded as
+ "not this character" (OP_NOT). This wasn't working properly when the test
+ character was multibyte, either singly or repeated.
+
+(iii) Repeats of multibyte characters are now handled correctly in UTF-8
+ mode, for example: \x{100}{2,3}.
+
+(iv) The character escapes \b, \B, \d, \D, \s, \S, \w, and \W (either
+ singly or repeated) now correctly test multibyte characters. However,
+ PCRE doesn't recognize any characters with values greater than 255 as
+ digits, spaces, or word characters. Such characters always match \D, \S,
+ and \W, and never match \d, \s, or \w.
+
+(v) Classes may now contain characters and character ranges with values
+ greater than 255. For example: [ab\x{100}-\x{400}].
+
+(vi) pcregrep now has a --utf-8 option (synonym -u) which makes it call
+ PCRE in UTF-8 mode.
+
+52. The info request value PCRE_INFO_FIRSTCHAR has been renamed
+PCRE_INFO_FIRSTBYTE because it is a byte value. However, the old name is
+retained for backwards compatibility. (Note that LASTLITERAL is also a byte
+value.)
+
+53. The single man page has become too large. I have therefore split it up into
+a number of separate man pages. These also give rise to individual HTML pages;
+these are now put in a separate directory, and there is an index.html page that
+lists them all. Some hyperlinking between the pages has been installed.
+
+54. Added convenience functions for handling named capturing parentheses.
+
+55. Unknown escapes inside character classes (e.g. [\M]) and escapes that
+aren't interpreted therein (e.g. [\C]) are literals in Perl. This is now also
+true in PCRE, except when the PCRE_EXTENDED option is set, in which case they
+are faulted.
+
+56. Introduced HOST_CC and HOST_CFLAGS which can be set in the environment when
+calling configure. These values are used when compiling the dftables.c program
+which is run to generate the source of the default character tables. They
+default to the values of CC and CFLAGS. If you are cross-compiling PCRE,
+you will need to set these values.
+
+57. Updated the building process for Windows DLL, as provided by Fred Cox.
+
+
+Version 3.9 02-Jan-02
+---------------------
+
+1. A bit of extraneous text had somehow crept into the pcregrep documentation.
+
+2. If --disable-static was given, the building process failed when trying to
+build pcretest and pcregrep. (For some reason it was using libtool to compile
+them, which is not right, as they aren't part of the library.)
+
+
+Version 3.8 18-Dec-01
+---------------------
+
+1. The experimental UTF-8 code was completely screwed up. It was packing the
+bytes in the wrong order. How dumb can you get?
+
+
+Version 3.7 29-Oct-01
+---------------------
+
+1. In updating pcretest to check change 1 of version 3.6, I screwed up.
+This caused pcretest, when used on the test data, to segfault. Unfortunately,
+this didn't happen under Solaris 8, where I normally test things.
+
+2. The Makefile had to be changed to make it work on BSD systems, where 'make'
+doesn't seem to recognize that ./xxx and xxx are the same file. (This entry
+isn't in ChangeLog distributed with 3.7 because I forgot when I hastily made
+this fix an hour or so after the initial 3.7 release.)
+
+
+Version 3.6 23-Oct-01
+---------------------
+
+1. Crashed with /(sens|respons)e and \1ibility/ and "sense and sensibility" if
+offsets passed as NULL with zero offset count.
+
+2. The config.guess and config.sub files had not been updated when I moved to
+the latest autoconf.
+
+
+Version 3.5 15-Aug-01
+---------------------
+
+1. Added some missing #if !defined NOPOSIX conditionals in pcretest.c that
+had been forgotten.
+
+2. By using declared but undefined structures, we can avoid using "void"
+definitions in pcre.h while keeping the internal definitions of the structures
+private.
+
+3. The distribution is now built using autoconf 2.50 and libtool 1.4. From a
+user point of view, this means that both static and shared libraries are built
+by default, but this can be individually controlled. More of the work of
+handling this static/shared cases is now inside libtool instead of PCRE's make
+file.
+
+4. The pcretest utility is now installed along with pcregrep because it is
+useful for users (to test regexs) and by doing this, it automatically gets
+relinked by libtool. The documentation has been turned into a man page, so
+there are now .1, .txt, and .html versions in /doc.
+
+5. Upgrades to pcregrep:
+ (i) Added long-form option names like gnu grep.
+ (ii) Added --help to list all options with an explanatory phrase.
+ (iii) Added -r, --recursive to recurse into sub-directories.
+ (iv) Added -f, --file to read patterns from a file.
+
+6. pcre_exec() was referring to its "code" argument before testing that
+argument for NULL (and giving an error if it was NULL).
+
+7. Upgraded Makefile.in to allow for compiling in a different directory from
+the source directory.
+
+8. Tiny buglet in pcretest: when pcre_fullinfo() was called to retrieve the
+options bits, the pointer it was passed was to an int instead of to an unsigned
+long int. This mattered only on 64-bit systems.
+
+9. Fixed typo (3.4/1) in pcre.h again. Sigh. I had changed pcre.h (which is
+generated) instead of pcre.in, which it its source. Also made the same change
+in several of the .c files.
+
+10. A new release of gcc defines printf() as a macro, which broke pcretest
+because it had an ifdef in the middle of a string argument for printf(). Fixed
+by using separate calls to printf().
+
+11. Added --enable-newline-is-cr and --enable-newline-is-lf to the configure
+script, to force use of CR or LF instead of \n in the source. On non-Unix
+systems, the value can be set in config.h.
+
+12. The limit of 200 on non-capturing parentheses is a _nesting_ limit, not an
+absolute limit. Changed the text of the error message to make this clear, and
+likewise updated the man page.
+
+13. The limit of 99 on the number of capturing subpatterns has been removed.
+The new limit is 65535, which I hope will not be a "real" limit.
+
+
+Version 3.4 22-Aug-00
+---------------------
+
+1. Fixed typo in pcre.h: unsigned const char * changed to const unsigned char *.
+
+2. Diagnose condition (?(0) as an error instead of crashing on matching.
+
+
+Version 3.3 01-Aug-00
+---------------------
+
+1. If an octal character was given, but the value was greater than \377, it
+was not getting masked to the least significant bits, as documented. This could
+lead to crashes in some systems.
+
+2. Perl 5.6 (if not earlier versions) accepts classes like [a-\d] and treats
+the hyphen as a literal. PCRE used to give an error; it now behaves like Perl.
+
+3. Added the functions pcre_free_substring() and pcre_free_substring_list().
+These just pass their arguments on to (pcre_free)(), but they are provided
+because some uses of PCRE bind it to non-C systems that can call its functions,
+but cannot call free() or pcre_free() directly.
+
+4. Add "make test" as a synonym for "make check". Corrected some comments in
+the Makefile.
+
+5. Add $(DESTDIR)/ in front of all the paths in the "install" target in the
+Makefile.
+
+6. Changed the name of pgrep to pcregrep, because Solaris has introduced a
+command called pgrep for grepping around the active processes.
+
+7. Added the beginnings of support for UTF-8 character strings.
+
+8. Arranged for the Makefile to pass over the settings of CC, CFLAGS, and
+RANLIB to ./ltconfig so that they are used by libtool. I think these are all
+the relevant ones. (AR is not passed because ./ltconfig does its own figuring
+out for the ar command.)
+
+
+Version 3.2 12-May-00
+---------------------
+
+This is purely a bug fixing release.
+
+1. If the pattern /((Z)+|A)*/ was matched agained ZABCDEFG it matched Z instead
+of ZA. This was just one example of several cases that could provoke this bug,
+which was introduced by change 9 of version 2.00. The code for breaking
+infinite loops after an iteration that matches an empty string was't working
+correctly.
+
+2. The pcretest program was not imitating Perl correctly for the pattern /a*/g
+when matched against abbab (for example). After matching an empty string, it
+wasn't forcing anchoring when setting PCRE_NOTEMPTY for the next attempt; this
+caused it to match further down the string than it should.
+
+3. The code contained an inclusion of sys/types.h. It isn't clear why this
+was there because it doesn't seem to be needed, and it causes trouble on some
+systems, as it is not a Standard C header. It has been removed.
+
+4. Made 4 silly changes to the source to avoid stupid compiler warnings that
+were reported on the Macintosh. The changes were from
+
+ while ((c = *(++ptr)) != 0 && c != '\n');
+to
+ while ((c = *(++ptr)) != 0 && c != '\n') ;
+
+Totally extraordinary, but if that's what it takes...
+
+5. PCRE is being used in one environment where neither memmove() nor bcopy() is
+available. Added HAVE_BCOPY and an autoconf test for it; if neither
+HAVE_MEMMOVE nor HAVE_BCOPY is set, use a built-in emulation function which
+assumes the way PCRE uses memmove() (always moving upwards).
+
+6. PCRE is being used in one environment where strchr() is not available. There
+was only one use in pcre.c, and writing it out to avoid strchr() probably gives
+faster code anyway.
+
+
+Version 3.1 09-Feb-00
+---------------------
+
+The only change in this release is the fixing of some bugs in Makefile.in for
+the "install" target:
+
+(1) It was failing to install pcreposix.h.
+
+(2) It was overwriting the pcre.3 man page with the pcreposix.3 man page.
+
+
+Version 3.0 01-Feb-00
+---------------------
+
+1. Add support for the /+ modifier to perltest (to output $` like it does in
+pcretest).
+
+2. Add support for the /g modifier to perltest.
+
+3. Fix pcretest so that it behaves even more like Perl for /g when the pattern
+matches null strings.
+
+4. Fix perltest so that it doesn't do unwanted things when fed an empty
+pattern. Perl treats empty patterns specially - it reuses the most recent
+pattern, which is not what we want. Replace // by /(?#)/ in order to avoid this
+effect.
+
+5. The POSIX interface was broken in that it was just handing over the POSIX
+captured string vector to pcre_exec(), but (since release 2.00) PCRE has
+required a bigger vector, with some working space on the end. This means that
+the POSIX wrapper now has to get and free some memory, and copy the results.
+
+6. Added some simple autoconf support, placing the test data and the
+documentation in separate directories, re-organizing some of the
+information files, and making it build pcre-config (a GNU standard). Also added
+libtool support for building PCRE as a shared library, which is now the
+default.
+
+7. Got rid of the leading zero in the definition of PCRE_MINOR because 08 and
+09 are not valid octal constants. Single digits will be used for minor values
+less than 10.
+
+8. Defined REG_EXTENDED and REG_NOSUB as zero in the POSIX header, so that
+existing programs that set these in the POSIX interface can use PCRE without
+modification.
+
+9. Added a new function, pcre_fullinfo() with an extensible interface. It can
+return all that pcre_info() returns, plus additional data. The pcre_info()
+function is retained for compatibility, but is considered to be obsolete.
+
+10. Added experimental recursion feature (?R) to handle one common case that
+Perl 5.6 will be able to do with (?p{...}).
+
+11. Added support for POSIX character classes like [:alpha:], which Perl is
+adopting.
+
+
+Version 2.08 31-Aug-99
+----------------------
+
+1. When startoffset was not zero and the pattern began with ".*", PCRE was not
+trying to match at the startoffset position, but instead was moving forward to
+the next newline as if a previous match had failed.
+
+2. pcretest was not making use of PCRE_NOTEMPTY when repeating for /g and /G,
+and could get into a loop if a null string was matched other than at the start
+of the subject.
+
+3. Added definitions of PCRE_MAJOR and PCRE_MINOR to pcre.h so the version can
+be distinguished at compile time, and for completeness also added PCRE_DATE.
+
+5. Added Paul Sokolovsky's minor changes to make it easy to compile a Win32 DLL
+in GnuWin32 environments.
+
+
+Version 2.07 29-Jul-99
+----------------------
+
+1. The documentation is now supplied in plain text form and HTML as well as in
+the form of man page sources.
+
+2. C++ compilers don't like assigning (void *) values to other pointer types.
+In particular this affects malloc(). Although there is no problem in Standard
+C, I've put in casts to keep C++ compilers happy.
+
+3. Typo on pcretest.c; a cast of (unsigned char *) in the POSIX regexec() call
+should be (const char *).
+
+4. If NOPOSIX is defined, pcretest.c compiles without POSIX support. This may
+be useful for non-Unix systems who don't want to bother with the POSIX stuff.
+However, I haven't made this a standard facility. The documentation doesn't
+mention it, and the Makefile doesn't support it.
+
+5. The Makefile now contains an "install" target, with editable destinations at
+the top of the file. The pcretest program is not installed.
+
+6. pgrep -V now gives the PCRE version number and date.
+
+7. Fixed bug: a zero repetition after a literal string (e.g. /abcde{0}/) was
+causing the entire string to be ignored, instead of just the last character.
+
+8. If a pattern like /"([^\\"]+|\\.)*"/ is applied in the normal way to a
+non-matching string, it can take a very, very long time, even for strings of
+quite modest length, because of the nested recursion. PCRE now does better in
+some of these cases. It does this by remembering the last required literal
+character in the pattern, and pre-searching the subject to ensure it is present
+before running the real match. In other words, it applies a heuristic to detect
+some types of certain failure quickly, and in the above example, if presented
+with a string that has no trailing " it gives "no match" very quickly.
+
+9. A new runtime option PCRE_NOTEMPTY causes null string matches to be ignored;
+other alternatives are tried instead.
+
+
+Version 2.06 09-Jun-99
+----------------------
+
+1. Change pcretest's output for amount of store used to show just the code
+space, because the remainder (the data block) varies in size between 32-bit and
+64-bit systems.
+
+2. Added an extra argument to pcre_exec() to supply an offset in the subject to
+start matching at. This allows lookbehinds to work when searching for multiple
+occurrences in a string.
+
+3. Added additional options to pcretest for testing multiple occurrences:
+
+ /+ outputs the rest of the string that follows a match
+ /g loops for multiple occurrences, using the new startoffset argument
+ /G loops for multiple occurrences by passing an incremented pointer
+
+4. PCRE wasn't doing the "first character" optimization for patterns starting
+with \b or \B, though it was doing it for other lookbehind assertions. That is,
+it wasn't noticing that a match for a pattern such as /\bxyz/ has to start with
+the letter 'x'. On long subject strings, this gives a significant speed-up.
+
+
+Version 2.05 21-Apr-99
+----------------------
+
+1. Changed the type of magic_number from int to long int so that it works
+properly on 16-bit systems.
+
+2. Fixed a bug which caused patterns starting with .* not to work correctly
+when the subject string contained newline characters. PCRE was assuming
+anchoring for such patterns in all cases, which is not correct because .* will
+not pass a newline unless PCRE_DOTALL is set. It now assumes anchoring only if
+DOTALL is set at top level; otherwise it knows that patterns starting with .*
+must be retried after every newline in the subject.
+
+
+Version 2.04 18-Feb-99
+----------------------
+
+1. For parenthesized subpatterns with repeats whose minimum was zero, the
+computation of the store needed to hold the pattern was incorrect (too large).
+If such patterns were nested a few deep, this could multiply and become a real
+problem.
+
+2. Added /M option to pcretest to show the memory requirement of a specific
+pattern. Made -m a synonym of -s (which does this globally) for compatibility.
+
+3. Subpatterns of the form (regex){n,m} (i.e. limited maximum) were being
+compiled in such a way that the backtracking after subsequent failure was
+pessimal. Something like (a){0,3} was compiled as (a)?(a)?(a)? instead of
+((a)((a)(a)?)?)? with disastrous performance if the maximum was of any size.
+
+
+Version 2.03 02-Feb-99
+----------------------
+
+1. Fixed typo and small mistake in man page.
+
+2. Added 4th condition (GPL supersedes if conflict) and created separate
+LICENCE file containing the conditions.
+
+3. Updated pcretest so that patterns such as /abc\/def/ work like they do in
+Perl, that is the internal \ allows the delimiter to be included in the
+pattern. Locked out the use of \ as a delimiter. If \ immediately follows
+the final delimiter, add \ to the end of the pattern (to test the error).
+
+4. Added the convenience functions for extracting substrings after a successful
+match. Updated pcretest to make it able to test these functions.
+
+
+Version 2.02 14-Jan-99
+----------------------
+
+1. Initialized the working variables associated with each extraction so that
+their saving and restoring doesn't refer to uninitialized store.
+
+2. Put dummy code into study.c in order to trick the optimizer of the IBM C
+compiler for OS/2 into generating correct code. Apparently IBM isn't going to
+fix the problem.
+
+3. Pcretest: the timing code wasn't using LOOPREPEAT for timing execution
+calls, and wasn't printing the correct value for compiling calls. Increased the
+default value of LOOPREPEAT, and the number of significant figures in the
+times.
+
+4. Changed "/bin/rm" in the Makefile to "-rm" so it works on Windows NT.
+
+5. Renamed "deftables" as "dftables" to get it down to 8 characters, to avoid
+a building problem on Windows NT with a FAT file system.
+
+
+Version 2.01 21-Oct-98
+----------------------
+
+1. Changed the API for pcre_compile() to allow for the provision of a pointer
+to character tables built by pcre_maketables() in the current locale. If NULL
+is passed, the default tables are used.
+
+
+Version 2.00 24-Sep-98
+----------------------
+
+1. Since the (>?) facility is in Perl 5.005, don't require PCRE_EXTRA to enable
+it any more.
+
+2. Allow quantification of (?>) groups, and make it work correctly.
+
+3. The first character computation wasn't working for (?>) groups.
+
+4. Correct the implementation of \Z (it is permitted to match on the \n at the
+end of the subject) and add 5.005's \z, which really does match only at the
+very end of the subject.
+
+5. Remove the \X "cut" facility; Perl doesn't have it, and (?> is neater.
+
+6. Remove the ability to specify CASELESS, MULTILINE, DOTALL, and
+DOLLAR_END_ONLY at runtime, to make it possible to implement the Perl 5.005
+localized options. All options to pcre_study() were also removed.
+
+7. Add other new features from 5.005:
+
+ $(?<= positive lookbehind
+ $(?<! negative lookbehind
+ (?imsx-imsx) added the unsetting capability
+ such a setting is global if at outer level; local otherwise
+ (?imsx-imsx:) non-capturing groups with option setting
+ (?(cond)re|re) conditional pattern matching
+
+ A backreference to itself in a repeated group matches the previous
+ captured string.
+
+8. General tidying up of studying (both automatic and via "study")
+consequential on the addition of new assertions.
+
+9. As in 5.005, unlimited repeated groups that could match an empty substring
+are no longer faulted at compile time. Instead, the loop is forcibly broken at
+runtime if any iteration does actually match an empty substring.
+
+10. Include the RunTest script in the distribution.
+
+11. Added tests from the Perl 5.005_02 distribution. This showed up a few
+discrepancies, some of which were old and were also with respect to 5.004. They
+have now been fixed.
+
+
+Version 1.09 28-Apr-98
+----------------------
+
+1. A negated single character class followed by a quantifier with a minimum
+value of one (e.g. [^x]{1,6} ) was not compiled correctly. This could lead to
+program crashes, or just wrong answers. This did not apply to negated classes
+containing more than one character, or to minima other than one.
+
+
+Version 1.08 27-Mar-98
+----------------------
+
+1. Add PCRE_UNGREEDY to invert the greediness of quantifiers.
+
+2. Add (?U) and (?X) to set PCRE_UNGREEDY and PCRE_EXTRA respectively. The
+latter must appear before anything that relies on it in the pattern.
+
+
+Version 1.07 16-Feb-98
+----------------------
+
+1. A pattern such as /((a)*)*/ was not being diagnosed as in error (unlimited
+repeat of a potentially empty string).
+
+
+Version 1.06 23-Jan-98
+----------------------
+
+1. Added Markus Oberhumer's little patches for C++.
+
+2. Literal strings longer than 255 characters were broken.
+
+
+Version 1.05 23-Dec-97
+----------------------
+
+1. Negated character classes containing more than one character were failing if
+PCRE_CASELESS was set at run time.
+
+
+Version 1.04 19-Dec-97
+----------------------
+
+1. Corrected the man page, where some "const" qualifiers had been omitted.
+
+2. Made debugging output print "{0,xxx}" instead of just "{,xxx}" to agree with
+input syntax.
+
+3. Fixed memory leak which occurred when a regex with back references was
+matched with an offsets vector that wasn't big enough. The temporary memory
+that is used in this case wasn't being freed if the match failed.
+
+4. Tidied pcretest to ensure it frees memory that it gets.
+
+5. Temporary memory was being obtained in the case where the passed offsets
+vector was exactly big enough.
+
+6. Corrected definition of offsetof() from change 5 below.
+
+7. I had screwed up change 6 below and broken the rules for the use of
+setjmp(). Now fixed.
+
+
+Version 1.03 18-Dec-97
+----------------------
+
+1. A erroneous regex with a missing opening parenthesis was correctly
+diagnosed, but PCRE attempted to access brastack[-1], which could cause crashes
+on some systems.
+
+2. Replaced offsetof(real_pcre, code) by offsetof(real_pcre, code[0]) because
+it was reported that one broken compiler failed on the former because "code" is
+also an independent variable.
+
+3. The erroneous regex a[]b caused an array overrun reference.
+
+4. A regex ending with a one-character negative class (e.g. /[^k]$/) did not
+fail on data ending with that character. (It was going on too far, and checking
+the next character, typically a binary zero.) This was specific to the
+optimized code for single-character negative classes.
+
+5. Added a contributed patch from the TIN world which does the following:
+
+ + Add an undef for memmove, in case the the system defines a macro for it.
+
+ + Add a definition of offsetof(), in case there isn't one. (I don't know
+ the reason behind this - offsetof() is part of the ANSI standard - but
+ it does no harm).
+
+ + Reduce the ifdef's in pcre.c using macro DPRINTF, thereby eliminating
+ most of the places where whitespace preceded '#'. I have given up and
+ allowed the remaining 2 cases to be at the margin.
+
+ + Rename some variables in pcre to eliminate shadowing. This seems very
+ pedantic, but does no harm, of course.
+
+6. Moved the call to setjmp() into its own function, to get rid of warnings
+from gcc -Wall, and avoided calling it at all unless PCRE_EXTRA is used.
+
+7. Constructs such as \d{8,} were compiling into the equivalent of
+\d{8}\d{0,65527} instead of \d{8}\d* which didn't make much difference to the
+outcome, but in this particular case used more store than had been allocated,
+which caused the bug to be discovered because it threw up an internal error.
+
+8. The debugging code in both pcre and pcretest for outputting the compiled
+form of a regex was going wrong in the case of back references followed by
+curly-bracketed repeats.
+
+
+Version 1.02 12-Dec-97
+----------------------
+
+1. Typos in pcre.3 and comments in the source fixed.
+
+2. Applied a contributed patch to get rid of places where it used to remove
+'const' from variables, and fixed some signed/unsigned and uninitialized
+variable warnings.
+
+3. Added the "runtest" target to Makefile.
+
+4. Set default compiler flag to -O2 rather than just -O.
+
+
+Version 1.01 19-Nov-97
+----------------------
+
+1. PCRE was failing to diagnose unlimited repeat of empty string for patterns
+like /([ab]*)*/, that is, for classes with more than one character in them.
+
+2. Likewise, it wasn't diagnosing patterns with "once-only" subpatterns, such
+as /((?>a*))*/ (a PCRE_EXTRA facility).
+
+
+Version 1.00 18-Nov-97
+----------------------
+
+1. Added compile-time macros to support systems such as SunOS4 which don't have
+memmove() or strerror() but have other things that can be used instead.
+
+2. Arranged that "make clean" removes the executables.
+
+
+Version 0.99 27-Oct-97
+----------------------
+
+1. Fixed bug in code for optimizing classes with only one character. It was
+initializing a 32-byte map regardless, which could cause it to run off the end
+of the memory it had got.
+
+2. Added, conditional on PCRE_EXTRA, the proposed (?>REGEX) construction.
+
+
+Version 0.98 22-Oct-97
+----------------------
+
+1. Fixed bug in code for handling temporary memory usage when there are more
+back references than supplied space in the ovector. This could cause segfaults.
+
+
+Version 0.97 21-Oct-97
+----------------------
+
+1. Added the \X "cut" facility, conditional on PCRE_EXTRA.
+
+2. Optimized negated single characters not to use a bit map.
+
+3. Brought error texts together as macro definitions; clarified some of them;
+fixed one that was wrong - it said "range out of order" when it meant "invalid
+escape sequence".
+
+4. Changed some char * arguments to const char *.
+
+5. Added PCRE_NOTBOL and PCRE_NOTEOL (from POSIX).
+
+6. Added the POSIX-style API wrapper in pcreposix.a and testing facilities in
+pcretest.
+
+
+Version 0.96 16-Oct-97
+----------------------
+
+1. Added a simple "pgrep" utility to the distribution.
+
+2. Fixed an incompatibility with Perl: "{" is now treated as a normal character
+unless it appears in one of the precise forms "{ddd}", "{ddd,}", or "{ddd,ddd}"
+where "ddd" means "one or more decimal digits".
+
+3. Fixed serious bug. If a pattern had a back reference, but the call to
+pcre_exec() didn't supply a large enough ovector to record the related
+identifying subpattern, the match always failed. PCRE now remembers the number
+of the largest back reference, and gets some temporary memory in which to save
+the offsets during matching if necessary, in order to ensure that
+backreferences always work.
+
+4. Increased the compatibility with Perl in a number of ways:
+
+ (a) . no longer matches \n by default; an option PCRE_DOTALL is provided
+ to request this handling. The option can be set at compile or exec time.
+
+ (b) $ matches before a terminating newline by default; an option
+ PCRE_DOLLAR_ENDONLY is provided to override this (but not in multiline
+ mode). The option can be set at compile or exec time.
+
+ (c) The handling of \ followed by a digit other than 0 is now supposed to be
+ the same as Perl's. If the decimal number it represents is less than 10
+ or there aren't that many previous left capturing parentheses, an octal
+ escape is read. Inside a character class, it's always an octal escape,
+ even if it is a single digit.
+
+ (d) An escaped but undefined alphabetic character is taken as a literal,
+ unless PCRE_EXTRA is set. Currently this just reserves the remaining
+ escapes.
+
+ (e) {0} is now permitted. (The previous item is removed from the compiled
+ pattern).
+
+5. Changed all the names of code files so that the basic parts are no longer
+than 10 characters, and abolished the teeny "globals.c" file.
+
+6. Changed the handling of character classes; they are now done with a 32-byte
+bit map always.
+
+7. Added the -d and /D options to pcretest to make it possible to look at the
+internals of compilation without having to recompile pcre.
+
+
+Version 0.95 23-Sep-97
+----------------------
+
+1. Fixed bug in pre-pass concerning escaped "normal" characters such as \x5c or
+\x20 at the start of a run of normal characters. These were being treated as
+real characters, instead of the source characters being re-checked.
+
+
+Version 0.94 18-Sep-97
+----------------------
+
+1. The functions are now thread-safe, with the caveat that the global variables
+containing pointers to malloc() and free() or alternative functions are the
+same for all threads.
+
+2. Get pcre_study() to generate a bitmap of initial characters for non-
+anchored patterns when this is possible, and use it if passed to pcre_exec().
+
+
+Version 0.93 15-Sep-97
+----------------------
+
+1. /(b)|(:+)/ was computing an incorrect first character.
+
+2. Add pcre_study() to the API and the passing of pcre_extra to pcre_exec(),
+but not actually doing anything yet.
+
+3. Treat "-" characters in classes that cannot be part of ranges as literals,
+as Perl does (e.g. [-az] or [az-]).
+
+4. Set the anchored flag if a branch starts with .* or .*? because that tests
+all possible positions.
+
+5. Split up into different modules to avoid including unneeded functions in a
+compiled binary. However, compile and exec are still in one module. The "study"
+function is split off.
+
+6. The character tables are now in a separate module whose source is generated
+by an auxiliary program - but can then be edited by hand if required. There are
+now no calls to isalnum(), isspace(), isdigit(), isxdigit(), tolower() or
+toupper() in the code.
+
+7. Turn the malloc/free funtions variables into pcre_malloc and pcre_free and
+make them global. Abolish the function for setting them, as the caller can now
+set them directly.
+
+
+Version 0.92 11-Sep-97
+----------------------
+
+1. A repeat with a fixed maximum and a minimum of 1 for an ordinary character
+(e.g. /a{1,3}/) was broken (I mis-optimized it).
+
+2. Caseless matching was not working in character classes if the characters in
+the pattern were in upper case.
+
+3. Make ranges like [W-c] work in the same way as Perl for caseless matching.
+
+4. Make PCRE_ANCHORED public and accept as a compile option.
+
+5. Add an options word to pcre_exec() and accept PCRE_ANCHORED and
+PCRE_CASELESS at run time. Add escapes \A and \I to pcretest to cause it to
+pass them.
+
+6. Give an error if bad option bits passed at compile or run time.
+
+7. Add PCRE_MULTILINE at compile and exec time, and (?m) as well. Add \M to
+pcretest to cause it to pass that flag.
+
+8. Add pcre_info(), to get the number of identifying subpatterns, the stored
+options, and the first character, if set.
+
+9. Recognize C+ or C{n,m} where n >= 1 as providing a fixed starting character.
+
+
+Version 0.91 10-Sep-97
+----------------------
+
+1. PCRE was failing to diagnose unlimited repeats of subpatterns that could
+match the empty string as in /(a*)*/. It was looping and ultimately crashing.
+
+2. PCRE was looping on encountering an indefinitely repeated back reference to
+a subpattern that had matched an empty string, e.g. /(a|)\1*/. It now does what
+Perl does - treats the match as successful.
+
+****
diff --git a/CheckMan b/CheckMan
new file mode 100755
index 0000000..480d735
--- /dev/null
+++ b/CheckMan
@@ -0,0 +1,67 @@
+#! /usr/bin/perl
+
+# A script to scan PCRE's man pages to check for typos in the control
+# sequences. I use only a small set of the available repertoire, so it is
+# straightforward to check that nothing else has slipped in by mistake. This
+# script should be called in the doc directory.
+
+$yield = 0;
+
+while (scalar(@ARGV) > 0)
+ {
+ $line = 0;
+ $file = shift @ARGV;
+
+ open (IN, $file) || die "Failed to open $file\n";
+
+ while (<IN>)
+ {
+ $line++;
+ if (/^\s*$/)
+ {
+ printf "Empty line $line of $file\n";
+ $yield = 1;
+ }
+ elsif (/^\./)
+ {
+ if (!/^\.\s*$|
+ ^\.B\s+\S|
+ ^\.TH\s\S|
+ ^\.SH\s\S|
+ ^\.SS\s\S|
+ ^\.TP(?:\s?\d+)?\s*$|
+ ^\.SM\s*$|
+ ^\.br\s*$|
+ ^\.rs\s*$|
+ ^\.sp\s*$|
+ ^\.nf\s*$|
+ ^\.fi\s*$|
+ ^\.P\s*$|
+ ^\.PP\s*$|
+ ^\.\\"(?:\ HREF)?\s*$|
+ ^\.\\"\sHTML\s<a\shref="[^"]+?">\s*$|
+ ^\.\\"\sHTML\s<a\sname="[^"]+?"><\/a>\s*$|
+ ^\.\\"\s<\/a>\s*$|
+ ^\.\\"\sJOINSH\s*$|
+ ^\.\\"\sJOIN\s*$/x
+ )
+ {
+ printf "Bad control line $line of $file\n";
+ $yield = 1;
+ }
+ }
+ else
+ {
+ if (/\\[^ef]|\\f[^IBP]/)
+ {
+ printf "Bad backslash in line $line of $file\n";
+ $yield = 1;
+ }
+ }
+ }
+
+ close(IN);
+ }
+
+exit $yield;
+# End
diff --git a/CleanTxt b/CleanTxt
new file mode 100755
index 0000000..1f42519
--- /dev/null
+++ b/CleanTxt
@@ -0,0 +1,113 @@
+#! /usr/bin/perl -w
+
+# Script to take the output of nroff -man and remove all the backspacing and
+# the page footers and the screen commands etc so that it is more usefully
+# readable online. In fact, in the latest nroff, intermediate footers don't
+# seem to be generated any more.
+
+$blankcount = 0;
+$lastwascut = 0;
+$firstheader = 1;
+
+# Input on STDIN; output to STDOUT.
+
+while (<STDIN>)
+ {
+ s/\x1b\[\d+m//g; # Remove screen controls "ESC [ number m"
+ s/.\x8//g; # Remove "char, backspace"
+
+ # Handle header lines. Retain only the first one we encounter, but remove
+ # the blank line that follows. Any others (e.g. at end of document) and the
+ # following blank line are dropped.
+
+ if (/^PCRE(\w*)\(([13])\)\s+PCRE\1\(\2\)$/)
+ {
+ if ($firstheader)
+ {
+ $firstheader = 0;
+ print;
+ $lastprinted = $_;
+ $lastwascut = 0;
+ }
+ $_=<STDIN>; # Remove a blank that follows
+ next;
+ }
+
+ # Count runs of empty lines
+
+ if (/^\s*$/)
+ {
+ $blankcount++;
+ $lastwascut = 0;
+ next;
+ }
+
+ # If a chunk of lines has been cut out (page footer) and the next line
+ # has a different indentation, put back one blank line.
+
+ if ($lastwascut && $blankcount < 1 && defined($lastprinted))
+ {
+ ($a) = $lastprinted =~ /^(\s*)/;
+ ($b) = $_ =~ /^(\s*)/;
+ $blankcount++ if ($a ne $b);
+ }
+
+ # We get here only when we have a non-blank line in hand. If it was preceded
+ # by 3 or more blank lines, read the next 3 lines and see if they are blank.
+ # If so, remove all 7 lines, and remember that we have just done a cut.
+
+ if ($blankcount >= 3)
+ {
+ for ($i = 0; $i < 3; $i++)
+ {
+ $next[$i] = <STDIN>;
+ $next[$i] = "" if !defined $next[$i];
+ $next[$i] =~ s/\x1b\[\d+m//g; # Remove screen controls "ESC [ number m"
+ $next[$i] =~ s/.\x8//g; # Remove "char, backspace"
+ }
+
+ # Cut out chunks of the form <3 blanks><non-blank><3 blanks>
+
+ if ($next[0] =~ /^\s*$/ &&
+ $next[1] =~ /^\s*$/ &&
+ $next[2] =~ /^\s*$/)
+ {
+ $blankcount -= 3;
+ $lastwascut = 1;
+ }
+
+ # Otherwise output the saved blanks, the current, and the next three
+ # lines. Remember the last printed line.
+
+ else
+ {
+ for ($i = 0; $i < $blankcount; $i++) { print "\n"; }
+ print;
+ for ($i = 0; $i < 3; $i++)
+ {
+ $next[$i] =~ s/.\x8//g;
+ print $next[$i];
+ $lastprinted = $_;
+ }
+ $lastwascut = 0;
+ $blankcount = 0;
+ }
+ }
+
+ # This non-blank line is not preceded by 3 or more blank lines. Output
+ # any blanks there are, and the line. Remember it. Force two blank lines
+ # before headings.
+
+ else
+ {
+ $blankcount = 2 if /^\S/ && !/^Last updated/ && !/^Copyright/ &&
+ defined($lastprinted);
+ for ($i = 0; $i < $blankcount; $i++) { print "\n"; }
+ print;
+ $lastprinted = $_;
+ $lastwascut = 0;
+ $blankcount = 0;
+ }
+ }
+
+# End
diff --git a/Detrail b/Detrail
new file mode 100755
index 0000000..1c5c7e9
--- /dev/null
+++ b/Detrail
@@ -0,0 +1,35 @@
+#!/usr/bin/perl
+
+# This is a script for removing trailing whitespace from lines in files that
+# are listed on the command line.
+
+# This subroutine does the work for one file.
+
+sub detrail {
+my($file) = $_[0];
+my($changed) = 0;
+open(IN, "$file") || die "Can't open $file for input";
+@lines = <IN>;
+close(IN);
+foreach (@lines)
+ {
+ if (/\s+\n$/)
+ {
+ s/\s+\n$/\n/;
+ $changed = 1;
+ }
+ }
+if ($changed)
+ {
+ open(OUT, ">$file") || die "Can't open $file for output";
+ print OUT @lines;
+ close(OUT);
+ }
+}
+
+# This is the main program
+
+$, = ""; # Output field separator
+for ($i = 0; $i < @ARGV; $i++) { &detrail($ARGV[$i]); }
+
+# End
diff --git a/HACKING b/HACKING
new file mode 100644
index 0000000..691b7a1
--- /dev/null
+++ b/HACKING
@@ -0,0 +1,528 @@
+Technical Notes about PCRE
+--------------------------
+
+These are very rough technical notes that record potentially useful information
+about PCRE internals. For information about testing PCRE, see the pcretest
+documentation and the comment at the head of the RunTest file.
+
+
+Historical note 1
+-----------------
+
+Many years ago I implemented some regular expression functions to an algorithm
+suggested by Martin Richards. These were not Unix-like in form, and were quite
+restricted in what they could do by comparison with Perl. The interesting part
+about the algorithm was that the amount of space required to hold the compiled
+form of an expression was known in advance. The code to apply an expression did
+not operate by backtracking, as the original Henry Spencer code and current
+Perl code does, but instead checked all possibilities simultaneously by keeping
+a list of current states and checking all of them as it advanced through the
+subject string. In the terminology of Jeffrey Friedl's book, it was a "DFA
+algorithm", though it was not a traditional Finite State Machine (FSM). When
+the pattern was all used up, all remaining states were possible matches, and
+the one matching the longest subset of the subject string was chosen. This did
+not necessarily maximize the individual wild portions of the pattern, as is
+expected in Unix and Perl-style regular expressions.
+
+
+Historical note 2
+-----------------
+
+By contrast, the code originally written by Henry Spencer (which was
+subsequently heavily modified for Perl) compiles the expression twice: once in
+a dummy mode in order to find out how much store will be needed, and then for
+real. (The Perl version probably doesn't do this any more; I'm talking about
+the original library.) The execution function operates by backtracking and
+maximizing (or, optionally, minimizing in Perl) the amount of the subject that
+matches individual wild portions of the pattern. This is an "NFA algorithm" in
+Friedl's terminology.
+
+
+OK, here's the real stuff
+-------------------------
+
+For the set of functions that form the "basic" PCRE library (which are
+unrelated to those mentioned above), I tried at first to invent an algorithm
+that used an amount of store bounded by a multiple of the number of characters
+in the pattern, to save on compiling time. However, because of the greater
+complexity in Perl regular expressions, I couldn't do this. In any case, a
+first pass through the pattern is helpful for other reasons.
+
+
+Support for 16-bit and 32-bit data strings
+-------------------------------------------
+
+From release 8.30, PCRE supports 16-bit as well as 8-bit data strings; and from
+release 8.32, PCRE supports 32-bit data strings. The library can be compiled
+in any combination of 8-bit, 16-bit or 32-bit modes, creating up to three
+different libraries. In the description that follows, the word "short" is used
+for a 16-bit data quantity, and the word "unit" is used for a quantity that is
+a byte in 8-bit mode, a short in 16-bit mode and a 32-bit word in 32-bit mode.
+However, so as not to over-complicate the text, the names of PCRE functions are
+given in 8-bit form only.
+
+
+Computing the memory requirement: how it was
+--------------------------------------------
+
+Up to and including release 6.7, PCRE worked by running a very degenerate first
+pass to calculate a maximum store size, and then a second pass to do the real
+compile - which might use a bit less than the predicted amount of memory. The
+idea was that this would turn out faster than the Henry Spencer code because
+the first pass is degenerate and the second pass can just store stuff straight
+into the vector, which it knows is big enough.
+
+
+Computing the memory requirement: how it is
+-------------------------------------------
+
+By the time I was working on a potential 6.8 release, the degenerate first pass
+had become very complicated and hard to maintain. Indeed one of the early
+things I did for 6.8 was to fix Yet Another Bug in the memory computation. Then
+I had a flash of inspiration as to how I could run the real compile function in
+a "fake" mode that enables it to compute how much memory it would need, while
+actually only ever using a few hundred bytes of working memory, and without too
+many tests of the mode that might slow it down. So I refactored the compiling
+functions to work this way. This got rid of about 600 lines of source. It
+should make future maintenance and development easier. As this was such a major
+change, I never released 6.8, instead upping the number to 7.0 (other quite
+major changes were also present in the 7.0 release).
+
+A side effect of this work was that the previous limit of 200 on the nesting
+depth of parentheses was removed. However, there is a downside: pcre_compile()
+runs more slowly than before (30% or more, depending on the pattern) because it
+is doing a full analysis of the pattern. My hope was that this would not be a
+big issue, and in the event, nobody has commented on it.
+
+At release 8.34, a limit on the nesting depth of parentheses was re-introduced
+(default 250, settable at build time) so as to put a limit on the amount of
+system stack used by pcre_compile(). This is a safety feature for environments
+with small stacks where the patterns are provided by users.
+
+
+Traditional matching function
+-----------------------------
+
+The "traditional", and original, matching function is called pcre_exec(), and
+it implements an NFA algorithm, similar to the original Henry Spencer algorithm
+and the way that Perl works. This is not surprising, since it is intended to be
+as compatible with Perl as possible. This is the function most users of PCRE
+will use most of the time. From release 8.20, if PCRE is compiled with
+just-in-time (JIT) support, and studying a compiled pattern with JIT is
+successful, the JIT code is run instead of the normal pcre_exec() code, but the
+result is the same.
+
+
+Supplementary matching function
+-------------------------------
+
+From PCRE 6.0, there is also a supplementary matching function called
+pcre_dfa_exec(). This implements a DFA matching algorithm that searches
+simultaneously for all possible matches that start at one point in the subject
+string. (Going back to my roots: see Historical Note 1 above.) This function
+intreprets the same compiled pattern data as pcre_exec(); however, not all the
+facilities are available, and those that are do not always work in quite the
+same way. See the user documentation for details.
+
+The algorithm that is used for pcre_dfa_exec() is not a traditional FSM,
+because it may have a number of states active at one time. More work would be
+needed at compile time to produce a traditional FSM where only one state is
+ever active at once. I believe some other regex matchers work this way. JIT
+support is not available for this kind of matching.
+
+
+Changeable options
+------------------
+
+The /i, /m, or /s options (PCRE_CASELESS, PCRE_MULTILINE, PCRE_DOTALL, and some
+others) may change in the middle of patterns. From PCRE 8.13, their processing
+is handled entirely at compile time by generating different opcodes for the
+different settings. The runtime functions do not need to keep track of an
+options state any more.
+
+
+Format of compiled patterns
+---------------------------
+
+The compiled form of a pattern is a vector of unsigned units (bytes in 8-bit
+mode, shorts in 16-bit mode, 32-bit words in 32-bit mode), containing items of
+variable length. The first unit in an item contains an opcode, and the length
+of the item is either implicit in the opcode or contained in the data that
+follows it.
+
+In many cases listed below, LINK_SIZE data values are specified for offsets
+within the compiled pattern. LINK_SIZE always specifies a number of bytes. The
+default value for LINK_SIZE is 2, but PCRE can be compiled to use 3-byte or
+4-byte values for these offsets, although this impairs the performance. (3-byte
+LINK_SIZE values are available only in 8-bit mode.) Specifing a LINK_SIZE
+larger than 2 is necessary only when patterns whose compiled length is greater
+than 64K are going to be processed. In this description, we assume the "normal"
+compilation options. Data values that are counts (e.g. quantifiers) are two
+bytes long in 8-bit mode (most significant byte first), or one unit in 16-bit
+and 32-bit modes.
+
+
+Opcodes with no following data
+------------------------------
+
+These items are all just one unit long
+
+ OP_END end of pattern
+ OP_ANY match any one character other than newline
+ OP_ALLANY match any one character, including newline
+ OP_ANYBYTE match any single unit, even in UTF-8/16 mode
+ OP_SOD match start of data: \A
+ OP_SOM, start of match (subject + offset): \G
+ OP_SET_SOM, set start of match (\K)
+ OP_CIRC ^ (start of data)
+ OP_CIRCM ^ multiline mode (start of data or after newline)
+ OP_NOT_WORD_BOUNDARY \W
+ OP_WORD_BOUNDARY \w
+ OP_NOT_DIGIT \D
+ OP_DIGIT \d
+ OP_NOT_HSPACE \H
+ OP_HSPACE \h
+ OP_NOT_WHITESPACE \S
+ OP_WHITESPACE \s
+ OP_NOT_VSPACE \V
+ OP_VSPACE \v
+ OP_NOT_WORDCHAR \W
+ OP_WORDCHAR \w
+ OP_EODN match end of data or newline at end: \Z
+ OP_EOD match end of data: \z
+ OP_DOLL $ (end of data, or before final newline)
+ OP_DOLLM $ multiline mode (end of data or before newline)
+ OP_EXTUNI match an extended Unicode grapheme cluster
+ OP_ANYNL match any Unicode newline sequence
+
+ OP_ASSERT_ACCEPT )
+ OP_ACCEPT ) These are Perl 5.10's "backtracking control
+ OP_COMMIT ) verbs". If OP_ACCEPT is inside capturing
+ OP_FAIL ) parentheses, it may be preceded by one or more
+ OP_PRUNE ) OP_CLOSE, each followed by a count that
+ OP_SKIP ) indicates which parentheses must be closed.
+ OP_THEN )
+
+OP_ASSERT_ACCEPT is used when (*ACCEPT) is encountered within an assertion.
+This ends the assertion, not the entire pattern match.
+
+
+Backtracking control verbs with optional data
+---------------------------------------------
+
+(*THEN) without an argument generates the opcode OP_THEN and no following data.
+OP_MARK is followed by the mark name, preceded by a one-unit length, and
+followed by a binary zero. For (*PRUNE), (*SKIP), and (*THEN) with arguments,
+the opcodes OP_PRUNE_ARG, OP_SKIP_ARG, and OP_THEN_ARG are used, with the name
+following in the same format as OP_MARK.
+
+
+Matching literal characters
+---------------------------
+
+The OP_CHAR opcode is followed by a single character that is to be matched
+casefully. For caseless matching, OP_CHARI is used. In UTF-8 or UTF-16 modes,
+the character may be more than one unit long. In UTF-32 mode, characters
+are always exactly one unit long.
+
+If there is only one character in a character class, OP_CHAR or OP_CHARI is
+used for a positive class, and OP_NOT or OP_NOTI for a negative one (that is,
+for something like [^a]).
+
+
+Repeating single characters
+---------------------------
+
+The common repeats (*, +, ?), when applied to a single character, use the
+following opcodes, which come in caseful and caseless versions:
+
+ Caseful Caseless
+ OP_STAR OP_STARI
+ OP_MINSTAR OP_MINSTARI
+ OP_POSSTAR OP_POSSTARI
+ OP_PLUS OP_PLUSI
+ OP_MINPLUS OP_MINPLUSI
+ OP_POSPLUS OP_POSPLUSI
+ OP_QUERY OP_QUERYI
+ OP_MINQUERY OP_MINQUERYI
+ OP_POSQUERY OP_POSQUERYI
+
+Each opcode is followed by the character that is to be repeated. In ASCII mode,
+these are two-unit items; in UTF-8 or UTF-16 modes, the length is variable; in
+UTF-32 mode these are one-unit items. Those with "MIN" in their names are the
+minimizing versions. Those with "POS" in their names are possessive versions.
+Other repeats make use of these opcodes:
+
+ Caseful Caseless
+ OP_UPTO OP_UPTOI
+ OP_MINUPTO OP_MINUPTOI
+ OP_POSUPTO OP_POSUPTOI
+ OP_EXACT OP_EXACTI
+
+Each of these is followed by a count and then the repeated character. OP_UPTO
+matches from 0 to the given number. A repeat with a non-zero minimum and a
+fixed maximum is coded as an OP_EXACT followed by an OP_UPTO (or OP_MINUPTO or
+OPT_POSUPTO).
+
+Another set of matching repeating opcodes (called OP_NOTSTAR, OP_NOTSTARI,
+etc.) are used for repeated, negated, single-character classes such as [^a]*.
+The normal single-character opcodes (OP_STAR, etc.) are used for repeated
+positive single-character classes.
+
+
+Repeating character types
+-------------------------
+
+Repeats of things like \d are done exactly as for single characters, except
+that instead of a character, the opcode for the type is stored in the data
+unit. The opcodes are:
+
+ OP_TYPESTAR
+ OP_TYPEMINSTAR
+ OP_TYPEPOSSTAR
+ OP_TYPEPLUS
+ OP_TYPEMINPLUS
+ OP_TYPEPOSPLUS
+ OP_TYPEQUERY
+ OP_TYPEMINQUERY
+ OP_TYPEPOSQUERY
+ OP_TYPEUPTO
+ OP_TYPEMINUPTO
+ OP_TYPEPOSUPTO
+ OP_TYPEEXACT
+
+
+Match by Unicode property
+-------------------------
+
+OP_PROP and OP_NOTPROP are used for positive and negative matches of a
+character by testing its Unicode property (the \p and \P escape sequences).
+Each is followed by two units that encode the desired property as a type and a
+value. The types are a set of #defines of the form PT_xxx, and the values are
+enumerations of the form ucp_xx, defined in the ucp.h source file. The value is
+relevant only for PT_GC (General Category), PT_PC (Particular Category), and
+PT_SC (Script).
+
+Repeats of these items use the OP_TYPESTAR etc. set of opcodes, followed by
+three units: OP_PROP or OP_NOTPROP, and then the desired property type and
+value.
+
+
+Character classes
+-----------------
+
+If there is only one character in a class, OP_CHAR or OP_CHARI is used for a
+positive class, and OP_NOT or OP_NOTI for a negative one (that is, for
+something like [^a]).
+
+A set of repeating opcodes (called OP_NOTSTAR etc.) are used for repeated,
+negated, single-character classes. The normal single-character opcodes
+(OP_STAR, etc.) are used for repeated positive single-character classes.
+
+When there is more than one character in a class, and all the code points are
+less than 256, OP_CLASS is used for a positive class, and OP_NCLASS for a
+negative one. In either case, the opcode is followed by a 32-byte (16-short,
+8-word) bit map containing a 1 bit for every character that is acceptable. The
+bits are counted from the least significant end of each unit. In caseless mode,
+bits for both cases are set.
+
+The reason for having both OP_CLASS and OP_NCLASS is so that, in UTF-8/16/32
+mode, subject characters with values greater than 255 can be handled correctly.
+For OP_CLASS they do not match, whereas for OP_NCLASS they do.
+
+For classes containing characters with values greater than 255 or that contain
+\p or \P, OP_XCLASS is used. It optionally uses a bit map if any code points
+are less than 256, followed by a list of pairs (for a range) and single
+characters. In caseless mode, both cases are explicitly listed.
+
+OP_XCLASS is followed by a unit containing flag bits: XCL_NOT indicates that
+this is a negative class, and XCL_MAP indicates that a bit map is present.
+There follows the bit map, if XCL_MAP is set, and then a sequence of items
+coded as follows:
+
+ XCL_END marks the end of the list
+ XCL_SINGLE one character follows
+ XCL_RANGE two characters follow
+ XCL_PROP a Unicode property (type, value) follows
+ XCL_NOTPROP a Unicode property (type, value) follows
+
+If a range starts with a code point less than 256 and ends with one greater
+than 256, an XCL_RANGE item is used, without setting any bits in the bit map.
+This means that if no other items in the class set bits in the map, a map is
+not needed.
+
+
+Back references
+---------------
+
+OP_REF (caseful) or OP_REFI (caseless) is followed by a count containing the
+reference number if the reference is to a unique capturing group (either by
+number or by name). When named groups are used, there may be more than one
+group with the same name. In this case, a reference by name generates OP_DNREF
+or OP_DNREFI. These are followed by two counts: the index (not the byte offset)
+in the group name table of the first entry for the requred name, followed by
+the number of groups with the same name.
+
+
+Repeating character classes and back references
+-----------------------------------------------
+
+Single-character classes are handled specially (see above). This section
+applies to other classes and also to back references. In both cases, the repeat
+information follows the base item. The matching code looks at the following
+opcode to see if it is one of
+
+ OP_CRSTAR
+ OP_CRMINSTAR
+ OP_CRPOSSTAR
+ OP_CRPLUS
+ OP_CRMINPLUS
+ OP_CRPOSPLUS
+ OP_CRQUERY
+ OP_CRMINQUERY
+ OP_CRPOSQUERY
+ OP_CRRANGE
+ OP_CRMINRANGE
+ OP_CRPOSRANGE
+
+All but the last three are single-unit items, with no data. The others are
+followed by the minimum and maximum repeat counts.
+
+
+Brackets and alternation
+------------------------
+
+A pair of non-capturing round brackets is wrapped round each expression at
+compile time, so alternation always happens in the context of brackets.
+
+[Note for North Americans: "bracket" to some English speakers, including
+myself, can be round, square, curly, or pointy. Hence this usage rather than
+"parentheses".]
+
+Non-capturing brackets use the opcode OP_BRA. Originally PCRE was limited to 99
+capturing brackets and it used a different opcode for each one. From release
+3.5, the limit was removed by putting the bracket number into the data for
+higher-numbered brackets. From release 7.0 all capturing brackets are handled
+this way, using the single opcode OP_CBRA.
+
+A bracket opcode is followed by LINK_SIZE bytes which give the offset to the
+next alternative OP_ALT or, if there aren't any branches, to the matching
+OP_KET opcode. Each OP_ALT is followed by LINK_SIZE bytes giving the offset to
+the next one, or to the OP_KET opcode. For capturing brackets, the bracket
+number is a count that immediately follows the offset.
+
+OP_KET is used for subpatterns that do not repeat indefinitely, and OP_KETRMIN
+and OP_KETRMAX are used for indefinite repetitions, minimally or maximally
+respectively (see below for possessive repetitions). All three are followed by
+LINK_SIZE bytes giving (as a positive number) the offset back to the matching
+bracket opcode.
+
+If a subpattern is quantified such that it is permitted to match zero times, it
+is preceded by one of OP_BRAZERO, OP_BRAMINZERO, or OP_SKIPZERO. These are
+single-unit opcodes that tell the matcher that skipping the following
+subpattern entirely is a valid branch. In the case of the first two, not
+skipping the pattern is also valid (greedy and non-greedy). The third is used
+when a pattern has the quantifier {0,0}. It cannot be entirely discarded,
+because it may be called as a subroutine from elsewhere in the regex.
+
+A subpattern with an indefinite maximum repetition is replicated in the
+compiled data its minimum number of times (or once with OP_BRAZERO if the
+minimum is zero), with the final copy terminating with OP_KETRMIN or OP_KETRMAX
+as appropriate.
+
+A subpattern with a bounded maximum repetition is replicated in a nested
+fashion up to the maximum number of times, with OP_BRAZERO or OP_BRAMINZERO
+before each replication after the minimum, so that, for example, (abc){2,5} is
+compiled as (abc)(abc)((abc)((abc)(abc)?)?)?, except that each bracketed group
+has the same number.
+
+When a repeated subpattern has an unbounded upper limit, it is checked to see
+whether it could match an empty string. If this is the case, the opcode in the
+final replication is changed to OP_SBRA or OP_SCBRA. This tells the matcher
+that it needs to check for matching an empty string when it hits OP_KETRMIN or
+OP_KETRMAX, and if so, to break the loop.
+
+
+Possessive brackets
+-------------------
+
+When a repeated group (capturing or non-capturing) is marked as possessive by
+the "+" notation, e.g. (abc)++, different opcodes are used. Their names all
+have POS on the end, e.g. OP_BRAPOS instead of OP_BRA and OP_SCPBRPOS instead
+of OP_SCBRA. The end of such a group is marked by OP_KETRPOS. If the minimum
+repetition is zero, the group is preceded by OP_BRAPOSZERO.
+
+
+Once-only (atomic) groups
+-------------------------
+
+These are just like other subpatterns, but they start with the opcode
+OP_ONCE or OP_ONCE_NC. The former is used when there are no capturing brackets
+within the atomic group; the latter when there are. The distinction is needed
+for when there is a backtrack to before the group - any captures within the
+group must be reset, so it is necessary to retain backtracking points inside
+the group even after it is complete in order to do this. When there are no
+captures in an atomic group, all the backtracking can be discarded when it is
+complete. This is more efficient, and also uses less stack.
+
+The check for matching an empty string in an unbounded repeat is handled
+entirely at runtime, so there are just these two opcodes for atomic groups.
+
+
+Assertions
+----------
+
+Forward assertions are also just like other subpatterns, but starting with one
+of the opcodes OP_ASSERT or OP_ASSERT_NOT. Backward assertions use the opcodes
+OP_ASSERTBACK and OP_ASSERTBACK_NOT, and the first opcode inside the assertion
+is OP_REVERSE, followed by a count of the number of characters to move back the
+pointer in the subject string. In ASCII mode, the count is a number of units,
+but in UTF-8/16 mode each character may occupy more than one unit; in UTF-32
+mode each character occupies exactly one unit. A separate count is present in
+each alternative of a lookbehind assertion, allowing them to have different
+fixed lengths.
+
+
+Conditional subpatterns
+-----------------------
+
+These are like other subpatterns, but they start with the opcode OP_COND, or
+OP_SCOND for one that might match an empty string in an unbounded repeat. If
+the condition is a back reference, this is stored at the start of the
+subpattern using the opcode OP_CREF followed by a count containing the
+reference number, provided that the reference is to a unique capturing group.
+If the reference was by name and there is more than one group with that name,
+OP_DNCREF is used instead. It is followed by two counts: the index in the group
+names table, and the number of groups with the same name.
+
+If the condition is "in recursion" (coded as "(?(R)"), or "in recursion of
+group x" (coded as "(?(Rx)"), the group number is stored at the start of the
+subpattern using the opcode OP_RREF (with a value of zero for "the whole
+pattern") or OP_DNRREF (with data as for OP_DNCREF). For a DEFINE condition,
+just the single unit OP_DEF is used (it has no associated data). Otherwise, a
+conditional subpattern always starts with one of the assertions.
+
+
+Recursion
+---------
+
+Recursion either matches the current regex, or some subexpression. The opcode
+OP_RECURSE is followed by aLINK_SIZE value that is the offset to the starting
+bracket from the start of the whole pattern. From release 6.5, OP_RECURSE is
+automatically wrapped inside OP_ONCE brackets, because otherwise some patterns
+broke it. OP_RECURSE is also used for "subroutine" calls, even though they are
+not strictly a recursion.
+
+
+Callout
+-------
+
+OP_CALLOUT is followed by one unit of data that holds a callout number in the
+range 0 to 254 for manual callouts, or 255 for an automatic callout. In both
+cases there follows a count giving the offset in the pattern string to the
+start of the following item, and another count giving the length of this item.
+These values make is possible for pcretest to output useful tracing information
+using automatic callouts.
+
+Philip Hazel
+November 2013
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..2099840
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,370 @@
+Installation Instructions
+*************************
+
+Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation,
+Inc.
+
+ Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved. This file is offered as-is,
+without warranty of any kind.
+
+Basic Installation
+==================
+
+ Briefly, the shell command `./configure && make && make install'
+should configure, build, and install this package. The following
+more-detailed instructions are generic; see the `README' file for
+instructions specific to this package. Some packages provide this
+`INSTALL' file but do not implement all of the features documented
+below. The lack of an optional feature in a given package is not
+necessarily a bug. More recommendations for GNU packages can be found
+in *note Makefile Conventions: (standards)Makefile Conventions.
+
+ The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation. It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions. Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+ It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring. Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.
+
+ If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release. If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+ The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'. You need `configure.ac' if
+you want to change it or regenerate `configure' using a newer version
+of `autoconf'.
+
+ The simplest way to compile this package is:
+
+ 1. `cd' to the directory containing the package's source code and type
+ `./configure' to configure the package for your system.
+
+ Running `configure' might take a while. While running, it prints
+ some messages telling which features it is checking for.
+
+ 2. Type `make' to compile the package.
+
+ 3. Optionally, type `make check' to run any self-tests that come with
+ the package, generally using the just-built uninstalled binaries.
+
+ 4. Type `make install' to install the programs and any data files and
+ documentation. When installing into a prefix owned by root, it is
+ recommended that the package be configured and built as a regular
+ user, and only the `make install' phase executed with root
+ privileges.
+
+ 5. Optionally, type `make installcheck' to repeat any self-tests, but
+ this time using the binaries in their final installed location.
+ This target does not install anything. Running this target as a
+ regular user, particularly if the prior `make install' required
+ root privileges, verifies that the installation completed
+ correctly.
+
+ 6. You can remove the program binaries and object files from the
+ source code directory by typing `make clean'. To also remove the
+ files that `configure' created (so you can compile the package for
+ a different kind of computer), type `make distclean'. There is
+ also a `make maintainer-clean' target, but that is intended mainly
+ for the package's developers. If you use it, you may have to get
+ all sorts of other programs in order to regenerate files that came
+ with the distribution.
+
+ 7. Often, you can also type `make uninstall' to remove the installed
+ files again. In practice, not all packages have tested that
+ uninstallation works correctly, even though it is required by the
+ GNU Coding Standards.
+
+ 8. Some packages, particularly those that use Automake, provide `make
+ distcheck', which can by used by developers to test that all other
+ targets like `make install' and `make uninstall' work correctly.
+ This target is generally not run by end users.
+
+Compilers and Options
+=====================
+
+ Some systems require unusual options for compilation or linking that
+the `configure' script does not know about. Run `./configure --help'
+for details on some of the pertinent environment variables.
+
+ You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment. Here
+is an example:
+
+ ./configure CC=c99 CFLAGS=-g LIBS=-lposix
+
+ *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+ You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory. To do this, you can use GNU `make'. `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script. `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'. This
+is known as a "VPATH" build.
+
+ With a non-GNU `make', it is safer to compile the package for one
+architecture at a time in the source code directory. After you have
+installed the package for one architecture, use `make distclean' before
+reconfiguring for another architecture.
+
+ On MacOS X 10.5 and later systems, you can create libraries and
+executables that work on multiple system types--known as "fat" or
+"universal" binaries--by specifying multiple `-arch' options to the
+compiler but only a single `-arch' option to the preprocessor. Like
+this:
+
+ ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+ CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+ CPP="gcc -E" CXXCPP="g++ -E"
+
+ This is not guaranteed to produce working output in all cases, you
+may have to build one architecture at a time and combine the results
+using the `lipo' tool if you have problems.
+
+Installation Names
+==================
+
+ By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc. You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX', where PREFIX must be an
+absolute file name.
+
+ You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files. If you
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+ In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files. Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them. In general, the
+default for these options is expressed in terms of `${prefix}', so that
+specifying just `--prefix' will affect all of the other directory
+specifications that were not explicitly provided.
+
+ The most portable way to affect installation locations is to pass the
+correct locations to `configure'; however, many packages provide one or
+both of the following shortcuts of passing variable assignments to the
+`make install' command line to change installation locations without
+having to reconfigure or recompile.
+
+ The first method involves providing an override variable for each
+affected directory. For example, `make install
+prefix=/alternate/directory' will choose an alternate location for all
+directory configuration variables that were expressed in terms of
+`${prefix}'. Any directories that were specified during `configure',
+but not in terms of `${prefix}', must each be overridden at install
+time for the entire installation to be relocated. The approach of
+makefile variable overrides for each directory variable is required by
+the GNU Coding Standards, and ideally causes no recompilation.
+However, some platforms have known limitations with the semantics of
+shared libraries that end up requiring recompilation when using this
+method, particularly noticeable in packages that use GNU Libtool.
+
+ The second method involves providing the `DESTDIR' variable. For
+example, `make install DESTDIR=/alternate/directory' will prepend
+`/alternate/directory' before all installation names. The approach of
+`DESTDIR' overrides is not required by the GNU Coding Standards, and
+does not work on platforms that have drive letters. On the other hand,
+it does better at avoiding recompilation issues, and works well even
+when some directory options were not specified in terms of `${prefix}'
+at `configure' time.
+
+Optional Features
+=================
+
+ If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+ Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System). The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+ For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+ Some packages offer the ability to configure how verbose the
+execution of `make' will be. For these packages, running `./configure
+--enable-silent-rules' sets the default to minimal output, which can be
+overridden with `make V=1'; while running `./configure
+--disable-silent-rules' sets the default to verbose, which can be
+overridden with `make V=0'.
+
+Particular systems
+==================
+
+ On HP-UX, the default C compiler is not ANSI C compatible. If GNU
+CC is not installed, it is recommended to use the following options in
+order to use an ANSI C compiler:
+
+ ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
+
+and if that doesn't work, install pre-built binaries of GCC for HP-UX.
+
+ HP-UX `make' updates targets which have the same time stamps as
+their prerequisites, which makes it generally unusable when shipped
+generated files such as `configure' are involved. Use GNU `make'
+instead.
+
+ On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
+parse its `<wchar.h>' header file. The option `-nodtk' can be used as
+a workaround. If GNU CC is not installed, it is therefore recommended
+to try
+
+ ./configure CC="cc"
+
+and if that doesn't work, try
+
+ ./configure CC="cc -nodtk"
+
+ On Solaris, don't put `/usr/ucb' early in your `PATH'. This
+directory contains several dysfunctional programs; working variants of
+these programs are available in `/usr/bin'. So, if you need `/usr/ucb'
+in your `PATH', put it _after_ `/usr/bin'.
+
+ On Haiku, software installed for all users goes in `/boot/common',
+not `/usr/local'. It is recommended to use the following options:
+
+ ./configure --prefix=/boot/common
+
+Specifying the System Type
+==========================
+
+ There may be some features `configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on. Usually, assuming the package is built to be run on the
+_same_ architectures, `configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+`--build=TYPE' option. TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+ CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+ OS
+ KERNEL-OS
+
+ See the file `config.sub' for the possible values of each field. If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+ If you are _building_ compiler tools for cross-compiling, you should
+use the option `--target=TYPE' to select the type of system they will
+produce code for.
+
+ If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+ If you want to set default values for `configure' scripts to share,
+you can create a site shell script called `config.site' that gives
+default values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists. Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+ Variables not defined in a site shell script can be set in the
+environment passed to `configure'. However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost. In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'. For example:
+
+ ./configure CC=/usr/local2/bin/gcc
+
+causes the specified `gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+Unfortunately, this technique does not work for `CONFIG_SHELL' due to
+an Autoconf limitation. Until the limitation is lifted, you can use
+this workaround:
+
+ CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+`configure' Invocation
+======================
+
+ `configure' recognizes the following options to control how it
+operates.
+
+`--help'
+`-h'
+ Print a summary of all of the options to `configure', and exit.
+
+`--help=short'
+`--help=recursive'
+ Print a summary of the options unique to this package's
+ `configure', and exit. The `short' variant lists options used
+ only in the top level, while the `recursive' variant lists options
+ also present in any nested packages.
+
+`--version'
+`-V'
+ Print the version of Autoconf used to generate the `configure'
+ script, and exit.
+
+`--cache-file=FILE'
+ Enable the cache: use and save the results of the tests in FILE,
+ traditionally `config.cache'. FILE defaults to `/dev/null' to
+ disable caching.
+
+`--config-cache'
+`-C'
+ Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+ Do not print messages saying which checks are being made. To
+ suppress all normal output, redirect it to `/dev/null' (any error
+ messages will still be shown).
+
+`--srcdir=DIR'
+ Look for the package's source code in directory DIR. Usually
+ `configure' can determine that directory automatically.
+
+`--prefix=DIR'
+ Use DIR as the installation prefix. *note Installation Names::
+ for more details, including other options available for fine-tuning
+ the installation locations.
+
+`--no-create'
+`-n'
+ Run the configure checks, but stop before creating any output
+ files.
+
+`configure' also accepts some other, not widely useful, options. Run
+`configure --help' for more details.
diff --git a/LICENCE b/LICENCE
new file mode 100644
index 0000000..dd977af
--- /dev/null
+++ b/LICENCE
@@ -0,0 +1,93 @@
+PCRE LICENCE
+------------
+
+PCRE is a library of functions to support regular expressions whose syntax
+and semantics are as close as possible to those of the Perl 5 language.
+
+Release 8 of PCRE is distributed under the terms of the "BSD" licence, as
+specified below. The documentation for PCRE, supplied in the "doc"
+directory, is distributed under the same terms as the software itself. The data
+in the testdata directory is not copyrighted and is in the public domain.
+
+The basic library functions are written in C and are freestanding. Also
+included in the distribution is a set of C++ wrapper functions, and a
+just-in-time compiler that can be used to optimize pattern matching. These
+are both optional features that can be omitted when the library is built.
+
+
+THE BASIC LIBRARY FUNCTIONS
+---------------------------
+
+Written by: Philip Hazel
+Email local part: ph10
+Email domain: cam.ac.uk
+
+University of Cambridge Computing Service,
+Cambridge, England.
+
+Copyright (c) 1997-2016 University of Cambridge
+All rights reserved.
+
+
+PCRE JUST-IN-TIME COMPILATION SUPPORT
+-------------------------------------
+
+Written by: Zoltan Herczeg
+Email local part: hzmester
+Emain domain: freemail.hu
+
+Copyright(c) 2010-2016 Zoltan Herczeg
+All rights reserved.
+
+
+STACK-LESS JUST-IN-TIME COMPILER
+--------------------------------
+
+Written by: Zoltan Herczeg
+Email local part: hzmester
+Emain domain: freemail.hu
+
+Copyright(c) 2009-2016 Zoltan Herczeg
+All rights reserved.
+
+
+THE C++ WRAPPER FUNCTIONS
+-------------------------
+
+Contributed by: Google Inc.
+
+Copyright (c) 2007-2012, Google Inc.
+All rights reserved.
+
+
+THE "BSD" LICENCE
+-----------------
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ * Neither the name of the University of Cambridge nor the name of Google
+ Inc. nor the names of their contributors may be used to endorse or
+ promote products derived from this software without specific prior
+ written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+End
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..22b6947
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,895 @@
+## Process this file with automake to produce Makefile.in.
+
+ACLOCAL_AMFLAGS = -I m4
+
+dist_doc_DATA = \
+ doc/pcre.txt \
+ doc/pcre-config.txt \
+ doc/pcregrep.txt \
+ doc/pcretest.txt \
+ AUTHORS \
+ COPYING \
+ ChangeLog \
+ LICENCE \
+ NEWS \
+ README
+
+# Note that pcrecpp.html is not in this list; it is listed separately below.
+
+dist_html_DATA = \
+ doc/html/NON-AUTOTOOLS-BUILD.txt \
+ doc/html/README.txt \
+ doc/html/index.html \
+ doc/html/pcre-config.html \
+ doc/html/pcre.html \
+ doc/html/pcre16.html \
+ doc/html/pcre32.html \
+ doc/html/pcre_assign_jit_stack.html \
+ doc/html/pcre_compile.html \
+ doc/html/pcre_compile2.html \
+ doc/html/pcre_config.html \
+ doc/html/pcre_copy_named_substring.html \
+ doc/html/pcre_copy_substring.html \
+ doc/html/pcre_dfa_exec.html \
+ doc/html/pcre_exec.html \
+ doc/html/pcre_free_study.html \
+ doc/html/pcre_free_substring.html \
+ doc/html/pcre_free_substring_list.html \
+ doc/html/pcre_fullinfo.html \
+ doc/html/pcre_get_named_substring.html \
+ doc/html/pcre_get_stringnumber.html \
+ doc/html/pcre_get_stringtable_entries.html \
+ doc/html/pcre_get_substring.html \
+ doc/html/pcre_get_substring_list.html \
+ doc/html/pcre_jit_exec.html \
+ doc/html/pcre_jit_stack_alloc.html \
+ doc/html/pcre_jit_stack_free.html \
+ doc/html/pcre_maketables.html \
+ doc/html/pcre_pattern_to_host_byte_order.html \
+ doc/html/pcre_refcount.html \
+ doc/html/pcre_study.html \
+ doc/html/pcre_utf16_to_host_byte_order.html \
+ doc/html/pcre_utf32_to_host_byte_order.html \
+ doc/html/pcre_version.html \
+ doc/html/pcreapi.html \
+ doc/html/pcrebuild.html \
+ doc/html/pcrecallout.html \
+ doc/html/pcrecompat.html \
+ doc/html/pcredemo.html \
+ doc/html/pcregrep.html \
+ doc/html/pcrejit.html \
+ doc/html/pcrelimits.html \
+ doc/html/pcrematching.html \
+ doc/html/pcrepartial.html \
+ doc/html/pcrepattern.html \
+ doc/html/pcreperform.html \
+ doc/html/pcreposix.html \
+ doc/html/pcreprecompile.html \
+ doc/html/pcresample.html \
+ doc/html/pcrestack.html \
+ doc/html/pcresyntax.html \
+ doc/html/pcretest.html \
+ doc/html/pcreunicode.html
+
+pcrecpp_html = doc/html/pcrecpp.html
+dist_noinst_DATA = $(pcrecpp_html)
+
+if WITH_PCRE_CPP
+html_DATA = $(pcrecpp_html)
+endif
+
+# The Libtool libraries to install. We'll add to this later.
+lib_LTLIBRARIES =
+
+# Unit tests you want to run when people type 'make check'.
+# TESTS is for binary unit tests, check_SCRIPTS for script-based tests
+TESTS =
+check_SCRIPTS =
+dist_noinst_SCRIPTS =
+
+# Some of the binaries we make are to be installed, and others are
+# (non-user-visible) helper programs needed to build libpcre, libpcre16
+# or libpcre32.
+bin_PROGRAMS =
+noinst_PROGRAMS =
+
+# Additional files to delete on 'make clean' and 'make maintainer-clean'.
+CLEANFILES =
+MAINTAINERCLEANFILES =
+
+# Additional files to bundle with the distribution, over and above what
+# the Autotools include by default.
+EXTRA_DIST =
+
+# These files contain additional m4 macros that are used by autoconf.
+EXTRA_DIST += \
+ m4/ax_pthread.m4 m4/pcre_visibility.m4
+
+# These files contain maintenance information
+EXTRA_DIST += \
+ doc/perltest.txt \
+ NON-UNIX-USE \
+ NON-AUTOTOOLS-BUILD \
+ HACKING
+
+# These files are used in the preparation of a release
+EXTRA_DIST += \
+ PrepareRelease \
+ CheckMan \
+ CleanTxt \
+ Detrail \
+ 132html \
+ doc/index.html.src
+
+# These files are to do with building for Virtual Pascal
+EXTRA_DIST += \
+ makevp.bat \
+ makevp_c.txt \
+ makevp_l.txt \
+ pcregexp.pas
+
+# These files are usable versions of pcre.h and config.h that are distributed
+# for the benefit of people who are building PCRE manually, without the
+# Autotools support.
+EXTRA_DIST += \
+ pcre.h.generic \
+ config.h.generic
+
+# The only difference between pcre.h.in and pcre.h is the setting of the PCRE
+# version number. Therefore, we can create the generic version just by copying.
+pcre.h.generic: pcre.h.in configure.ac
+ rm -f $@
+ cp -p pcre.h $@
+
+# It is more complicated for config.h.generic. We need the version that results
+# from a default configuration so as to get all the default values for PCRE
+# configuration macros such as MATCH_LIMIT and NEWLINE. We can get this by
+# doing a configure in a temporary directory. However, some trickery is needed,
+# because the source directory may already be configured. If you just try
+# running configure in a new directory, it complains. For this reason, we move
+# config.status out of the way while doing the default configuration. The
+# resulting config.h is munged by perl to put #ifdefs round any #defines for
+# macros with values, and to #undef all boolean macros such as HAVE_xxx and
+# SUPPORT_xxx. We also get rid of any gcc-specific visibility settings. Make
+# sure that PCRE_EXP_DEFN is unset (in case it has visibility settings).
+config.h.generic: configure.ac
+ rm -rf $@ _generic
+ mkdir _generic
+ cs=$(srcdir)/config.status; test ! -f $$cs || mv -f $$cs $$cs.aside
+ cd _generic && $(abs_top_srcdir)/configure || :
+ cs=$(srcdir)/config.status; test ! -f $$cs.aside || mv -f $$cs.aside $$cs
+ test -f _generic/config.h
+ perl -n \
+ -e 'BEGIN{$$blank=0;}' \
+ -e 'if(/PCRE_EXP_DEFN/){print"/* #undef PCRE_EXP_DEFN */\n";$$blank=0;next;}' \
+ -e 'if(/to make a symbol visible/){next;}' \
+ -e 'if(/__attribute__ \(\(visibility/){next;}' \
+ -e 'if(/LT_OBJDIR/){print"/* This is ignored unless you are using libtool. */\n";}' \
+ -e 'if(/^#define\s((?:HAVE|SUPPORT|STDC)_\w+)/){print"/* #undef $$1 */\n";$$blank=0;next;}' \
+ -e 'if(/^#define\s(?!PACKAGE|VERSION)(\w+)/){print"#ifndef $$1\n$$_#endif\n";$$blank=0;next;}' \
+ -e 'if(/^\s*$$/){print unless $$blank; $$blank=1;} else{print;$$blank=0;}' \
+ _generic/config.h >$@
+ rm -rf _generic
+
+MAINTAINERCLEANFILES += pcre.h.generic config.h.generic
+
+# These are the header files we'll install. We do not distribute pcre.h because
+# it is generated from pcre.h.in.
+nodist_include_HEADERS = \
+ pcre.h
+include_HEADERS = \
+ pcreposix.h
+
+# These additional headers will be be installed if C++ support is enabled. We
+# do not distribute pcrecpparg.h or pcre_stringpiece.h, as these are generated
+# from corresponding .h.in files (which we do distribute).
+if WITH_PCRE_CPP
+nodist_include_HEADERS += \
+ pcrecpparg.h \
+ pcre_stringpiece.h
+include_HEADERS += \
+ pcrecpp.h \
+ pcre_scanner.h
+endif # WITH_PCRE_CPP
+
+bin_SCRIPTS = pcre-config
+
+## ---------------------------------------------------------------
+## The dftables program is used to rebuild character tables before compiling
+## PCRE, if --enable-rebuild-chartables is specified. It is not a user-visible
+## program. The default (when --enable-rebuild-chartables is not specified) is
+## to copy a distributed set of tables that are defined for ASCII code. In this
+## case, dftables is not needed.
+
+if WITH_REBUILD_CHARTABLES
+
+noinst_PROGRAMS += dftables
+dftables_SOURCES = dftables.c
+
+pcre_chartables.c: dftables$(EXEEXT)
+ ./dftables$(EXEEXT) $@
+else
+
+pcre_chartables.c: $(srcdir)/pcre_chartables.c.dist
+ rm -f $@
+ $(LN_S) $(srcdir)/pcre_chartables.c.dist $@
+
+endif # WITH_REBUILD_CHARTABLES
+
+BUILT_SOURCES = pcre_chartables.c
+
+## The main pcre library
+
+# Build the 8 bit library if it is enabled.
+if WITH_PCRE8
+lib_LTLIBRARIES += libpcre.la
+
+libpcre_la_SOURCES = \
+ pcre_byte_order.c \
+ pcre_compile.c \
+ pcre_config.c \
+ pcre_dfa_exec.c \
+ pcre_exec.c \
+ pcre_fullinfo.c \
+ pcre_get.c \
+ pcre_globals.c \
+ pcre_internal.h \
+ pcre_jit_compile.c \
+ pcre_maketables.c \
+ pcre_newline.c \
+ pcre_ord2utf8.c \
+ pcre_refcount.c \
+ pcre_string_utils.c \
+ pcre_study.c \
+ pcre_tables.c \
+ pcre_ucd.c \
+ pcre_valid_utf8.c \
+ pcre_version.c \
+ pcre_xclass.c \
+ ucp.h
+
+libpcre_la_CFLAGS = \
+ $(VISIBILITY_CFLAGS) \
+ $(AM_CFLAGS)
+
+libpcre_la_LIBADD =
+
+## This file is generated as part of the building process, so don't distribute.
+nodist_libpcre_la_SOURCES = \
+ pcre_chartables.c
+
+endif # WITH_PCRE8
+
+# Build the 16 bit library if it is enabled.
+if WITH_PCRE16
+lib_LTLIBRARIES += libpcre16.la
+libpcre16_la_SOURCES = \
+ pcre16_byte_order.c \
+ pcre16_chartables.c \
+ pcre16_compile.c \
+ pcre16_config.c \
+ pcre16_dfa_exec.c \
+ pcre16_exec.c \
+ pcre16_fullinfo.c \
+ pcre16_get.c \
+ pcre16_globals.c \
+ pcre16_jit_compile.c \
+ pcre16_maketables.c \
+ pcre16_newline.c \
+ pcre16_ord2utf16.c \
+ pcre16_refcount.c \
+ pcre16_string_utils.c \
+ pcre16_study.c \
+ pcre16_tables.c \
+ pcre16_ucd.c \
+ pcre16_utf16_utils.c \
+ pcre16_valid_utf16.c \
+ pcre16_version.c \
+ pcre16_xclass.c
+
+libpcre16_la_CFLAGS = \
+ $(VISIBILITY_CFLAGS) \
+ $(AM_CFLAGS)
+
+libpcre16_la_LIBADD =
+
+## This file is generated as part of the building process, so don't distribute.
+nodist_libpcre16_la_SOURCES = \
+ pcre_chartables.c
+
+endif # WITH_PCRE16
+
+# Build the 32 bit library if it is enabled.
+if WITH_PCRE32
+lib_LTLIBRARIES += libpcre32.la
+libpcre32_la_SOURCES = \
+ pcre32_byte_order.c \
+ pcre32_chartables.c \
+ pcre32_compile.c \
+ pcre32_config.c \
+ pcre32_dfa_exec.c \
+ pcre32_exec.c \
+ pcre32_fullinfo.c \
+ pcre32_get.c \
+ pcre32_globals.c \
+ pcre32_jit_compile.c \
+ pcre32_maketables.c \
+ pcre32_newline.c \
+ pcre32_ord2utf32.c \
+ pcre32_refcount.c \
+ pcre32_string_utils.c \
+ pcre32_study.c \
+ pcre32_tables.c \
+ pcre32_ucd.c \
+ pcre32_utf32_utils.c \
+ pcre32_valid_utf32.c \
+ pcre32_version.c \
+ pcre32_xclass.c
+
+libpcre32_la_CFLAGS = \
+ $(VISIBILITY_CFLAGS) \
+ $(AM_CFLAGS)
+
+libpcre32_la_LIBADD =
+
+## This file is generated as part of the building process, so don't distribute.
+nodist_libpcre32_la_SOURCES = \
+ pcre_chartables.c
+
+endif # WITH_PCRE32
+
+# The pcre_chartables.c.dist file is the default version of pcre_chartables.c,
+# used unless --enable-rebuild-chartables is specified.
+EXTRA_DIST += pcre_chartables.c.dist
+
+# The JIT compiler lives in a separate directory, but its files are #included
+# when pcre_jit_compile.c is processed, so they must be distributed.
+EXTRA_DIST += \
+ sljit/sljitConfig.h \
+ sljit/sljitConfigInternal.h \
+ sljit/sljitExecAllocator.c \
+ sljit/sljitLir.c \
+ sljit/sljitLir.h \
+ sljit/sljitNativeARM_32.c \
+ sljit/sljitNativeARM_64.c \
+ sljit/sljitNativeARM_T2_32.c \
+ sljit/sljitNativeMIPS_32.c \
+ sljit/sljitNativeMIPS_64.c \
+ sljit/sljitNativeMIPS_common.c \
+ sljit/sljitNativePPC_32.c \
+ sljit/sljitNativePPC_64.c \
+ sljit/sljitNativePPC_common.c \
+ sljit/sljitNativeSPARC_32.c \
+ sljit/sljitNativeSPARC_common.c \
+ sljit/sljitNativeTILEGX_64.c \
+ sljit/sljitNativeTILEGX-encoder.c \
+ sljit/sljitNativeX86_32.c \
+ sljit/sljitNativeX86_64.c \
+ sljit/sljitNativeX86_common.c \
+ sljit/sljitUtils.c
+
+if WITH_PCRE8
+libpcre_la_LDFLAGS = $(EXTRA_LIBPCRE_LDFLAGS)
+endif # WITH_PCRE8
+if WITH_PCRE16
+libpcre16_la_LDFLAGS = $(EXTRA_LIBPCRE16_LDFLAGS)
+endif # WITH_PCRE16
+if WITH_PCRE32
+libpcre32_la_LDFLAGS = $(EXTRA_LIBPCRE32_LDFLAGS)
+endif # WITH_PCRE32
+
+if WITH_VALGRIND
+if WITH_PCRE8
+libpcre_la_CFLAGS += $(VALGRIND_CFLAGS)
+endif # WITH_PCRE8
+if WITH_PCRE16
+libpcre16_la_CFLAGS += $(VALGRIND_CFLAGS)
+endif # WITH_PCRE16
+if WITH_PCRE32
+libpcre32_la_CFLAGS += $(VALGRIND_CFLAGS)
+endif # WITH_PCRE32
+endif # WITH_VALGRIND
+
+if WITH_GCOV
+if WITH_PCRE8
+libpcre_la_CFLAGS += $(GCOV_CFLAGS)
+endif # WITH_PCRE8
+if WITH_PCRE16
+libpcre16_la_CFLAGS += $(GCOV_CFLAGS)
+endif # WITH_PCRE16
+if WITH_PCRE32
+libpcre32_la_CFLAGS += $(GCOV_CFLAGS)
+endif # WITH_PCRE32
+endif # WITH_GCOV
+
+CLEANFILES += pcre_chartables.c
+
+## If JIT support is enabled, arrange for the JIT test program to run.
+if WITH_JIT
+TESTS += pcre_jit_test
+noinst_PROGRAMS += pcre_jit_test
+pcre_jit_test_SOURCES = pcre_jit_test.c
+pcre_jit_test_CFLAGS = $(AM_CFLAGS)
+pcre_jit_test_LDADD =
+if WITH_PCRE8
+pcre_jit_test_LDADD += libpcre.la
+endif # WITH_PCRE8
+if WITH_PCRE16
+pcre_jit_test_LDADD += libpcre16.la
+endif # WITH_PCRE16
+if WITH_PCRE32
+pcre_jit_test_LDADD += libpcre32.la
+endif # WITH_PCRE32
+if WITH_GCOV
+pcre_jit_test_CFLAGS += $(GCOV_CFLAGS)
+pcre_jit_test_LDADD += $(GCOV_LIBS)
+endif # WITH_GCOV
+endif # WITH_JIT
+
+## A version of the main pcre library that has a posix re API.
+if WITH_PCRE8
+
+lib_LTLIBRARIES += libpcreposix.la
+libpcreposix_la_SOURCES = \
+ pcreposix.c
+libpcreposix_la_CFLAGS = $(VISIBILITY_CFLAGS) $(AM_CFLAGS)
+libpcreposix_la_LDFLAGS = $(EXTRA_LIBPCREPOSIX_LDFLAGS)
+libpcreposix_la_LIBADD = libpcre.la
+
+if WITH_GCOV
+libpcreposix_la_CFLAGS += $(GCOV_CFLAGS)
+endif # WITH_GCOV
+
+endif # WITH_PCRE8
+
+## There's a C++ library as well.
+if WITH_PCRE_CPP
+
+lib_LTLIBRARIES += libpcrecpp.la
+libpcrecpp_la_SOURCES = \
+ pcrecpp_internal.h \
+ pcrecpp.cc \
+ pcre_scanner.cc \
+ pcre_stringpiece.cc
+libpcrecpp_la_CXXFLAGS = $(VISIBILITY_CXXFLAGS) $(AM_CXXFLAGS)
+libpcrecpp_la_LDFLAGS = $(EXTRA_LIBPCRECPP_LDFLAGS)
+libpcrecpp_la_LIBADD = libpcre.la
+
+TESTS += pcrecpp_unittest
+noinst_PROGRAMS += pcrecpp_unittest
+pcrecpp_unittest_SOURCES = pcrecpp_unittest.cc
+pcrecpp_unittest_CXXFLAGS = $(AM_CXXFLAGS)
+pcrecpp_unittest_LDADD = libpcrecpp.la
+
+TESTS += pcre_scanner_unittest
+noinst_PROGRAMS += pcre_scanner_unittest
+pcre_scanner_unittest_SOURCES = pcre_scanner_unittest.cc
+pcre_scanner_unittest_CXXFLAGS = $(AM_CXXFLAGS)
+pcre_scanner_unittest_LDADD = libpcrecpp.la
+
+TESTS += pcre_stringpiece_unittest
+noinst_PROGRAMS += pcre_stringpiece_unittest
+pcre_stringpiece_unittest_SOURCES = pcre_stringpiece_unittest.cc
+pcre_stringpiece_unittest_CXXFLAGS = $(AM_CXXFLAGS)
+pcre_stringpiece_unittest_LDADD = libpcrecpp.la
+
+if WITH_GCOV
+libpcrecpp_la_CXXFLAGS += $(GCOV_CXXFLAGS)
+pcrecpp_unittest_LDADD += $(GCOV_LIBS)
+pcre_scanner_unittest_LDADD += $(GCOV_LIBS)
+pcre_stringpiece_unittest_LDADD += $(GCOV_LIBS)
+endif # WITH_GCOV
+
+endif # WITH_PCRE_CPP
+
+## The main unit tests
+
+# Each unit test is a binary plus a script that runs that binary in various
+# ways. We install these test binaries in case folks find it helpful.
+
+TESTS += RunTest
+dist_noinst_SCRIPTS += RunTest
+EXTRA_DIST += RunTest.bat
+bin_PROGRAMS += pcretest
+pcretest_SOURCES = pcretest.c
+pcretest_CFLAGS = $(AM_CFLAGS)
+pcretest_LDADD = $(LIBREADLINE)
+if WITH_PCRE8
+pcretest_SOURCES += pcre_printint.c
+pcretest_LDADD += libpcre.la libpcreposix.la
+endif # WITH_PCRE8
+if WITH_PCRE16
+pcretest_SOURCES += pcre16_printint.c
+pcretest_LDADD += libpcre16.la
+endif # WITH_PCRE16
+if WITH_PCRE32
+pcretest_SOURCES += pcre32_printint.c
+pcretest_LDADD += libpcre32.la
+endif # WITH_PCRE32
+if WITH_VALGRIND
+pcretest_CFLAGS += $(VALGRIND_CFLAGS)
+endif # WITH_VALGRIND
+if WITH_GCOV
+pcretest_CFLAGS += $(GCOV_CFLAGS)
+pcretest_LDADD += $(GCOV_LIBS)
+endif # WITH_GCOV
+
+if WITH_PCRE8
+TESTS += RunGrepTest
+dist_noinst_SCRIPTS += RunGrepTest
+bin_PROGRAMS += pcregrep
+pcregrep_SOURCES = pcregrep.c
+pcregrep_CFLAGS = $(AM_CFLAGS)
+pcregrep_LDADD = $(LIBZ) $(LIBBZ2)
+pcregrep_LDADD += libpcre.la libpcreposix.la
+if WITH_GCOV
+pcregrep_CFLAGS += $(GCOV_CFLAGS)
+pcregrep_LDADD += $(GCOV_LIBS)
+endif # WITH_GCOV
+endif # WITH_PCRE8
+
+EXTRA_DIST += \
+ testdata/grepbinary \
+ testdata/grepfilelist \
+ testdata/grepinput \
+ testdata/grepinput3 \
+ testdata/grepinput8 \
+ testdata/grepinputv \
+ testdata/grepinputx \
+ testdata/greplist \
+ testdata/grepoutput \
+ testdata/grepoutput8 \
+ testdata/grepoutputN \
+ testdata/greppatN4 \
+ testdata/saved16 \
+ testdata/saved16BE-1 \
+ testdata/saved16BE-2 \
+ testdata/saved16LE-1 \
+ testdata/saved16LE-2 \
+ testdata/saved32 \
+ testdata/saved32BE-1 \
+ testdata/saved32BE-2 \
+ testdata/saved32LE-1 \
+ testdata/saved32LE-2 \
+ testdata/saved8 \
+ testdata/testinput1 \
+ testdata/testinput2 \
+ testdata/testinput3 \
+ testdata/testinput4 \
+ testdata/testinput5 \
+ testdata/testinput6 \
+ testdata/testinput7 \
+ testdata/testinput8 \
+ testdata/testinput9 \
+ testdata/testinput10 \
+ testdata/testinput11 \
+ testdata/testinput12 \
+ testdata/testinput13 \
+ testdata/testinput14 \
+ testdata/testinput15 \
+ testdata/testinput16 \
+ testdata/testinput17 \
+ testdata/testinput18 \
+ testdata/testinput19 \
+ testdata/testinput20 \
+ testdata/testinput21 \
+ testdata/testinput22 \
+ testdata/testinput23 \
+ testdata/testinput24 \
+ testdata/testinput25 \
+ testdata/testinput26 \
+ testdata/testinputEBC \
+ testdata/testoutput1 \
+ testdata/testoutput2 \
+ testdata/testoutput3 \
+ testdata/testoutput3A \
+ testdata/testoutput3B \
+ testdata/testoutput4 \
+ testdata/testoutput5 \
+ testdata/testoutput6 \
+ testdata/testoutput7 \
+ testdata/testoutput8 \
+ testdata/testoutput9 \
+ testdata/testoutput10 \
+ testdata/testoutput11-8 \
+ testdata/testoutput11-16 \
+ testdata/testoutput11-32 \
+ testdata/testoutput12 \
+ testdata/testoutput13 \
+ testdata/testoutput14 \
+ testdata/testoutput15 \
+ testdata/testoutput16 \
+ testdata/testoutput17 \
+ testdata/testoutput18-16 \
+ testdata/testoutput18-32 \
+ testdata/testoutput19 \
+ testdata/testoutput20 \
+ testdata/testoutput21-16 \
+ testdata/testoutput21-32 \
+ testdata/testoutput22-16 \
+ testdata/testoutput22-32 \
+ testdata/testoutput23 \
+ testdata/testoutput24 \
+ testdata/testoutput25 \
+ testdata/testoutput26 \
+ testdata/testoutputEBC \
+ testdata/valgrind-jit.supp \
+ testdata/wintestinput3 \
+ testdata/wintestoutput3 \
+ perltest.pl
+
+CLEANFILES += \
+ testsavedregex \
+ teststderr \
+ testtemp* \
+ testtry \
+ testNinput \
+ testtrygrep \
+ teststderrgrep \
+ testNinputgrep
+
+# PCRE demonstration program. No longer built automatcally. The point is that
+# the users should build it themselves. So just distribute the source.
+# noinst_PROGRAMS += pcredemo
+# pcredemo_SOURCES = pcredemo.c
+# pcredemo_LDADD = libpcre.la
+
+EXTRA_DIST += pcredemo.c
+
+
+## Utility rules, documentation, etc.
+
+# A compatibility line, the old build system worked with 'make test'
+test: check ;
+
+
+# A PCRE user submitted the following addition, saying that it "will allow
+# anyone using the 'mingw32' compiler to simply type 'make pcre.dll' and get a
+# nice DLL for Windows use". (It is used by the pcre.dll target.)
+DLL_OBJS= pcre_byte_order.o pcre_compile.o pcre_config.o \
+ pcre_dfa_exec.o pcre_exec.o pcre_fullinfo.o pcre_get.o \
+ pcre_globals.o pcre_jit_compile.o pcre_maketables.o \
+ pcre_newline.o pcre_ord2utf8.o pcre_refcount.o \
+ pcre_study.o pcre_tables.o pcre_ucd.o \
+ pcre_valid_utf8.o pcre_version.o pcre_chartables.o \
+ pcre_xclass.o
+
+# A PCRE user submitted the following addition, saying that it "will allow
+# anyone using the 'mingw32' compiler to simply type 'make pcre.dll' and get a
+# nice DLL for Windows use".
+pcre.dll: $(DLL_OBJS)
+ $(CC) -shared -o pcre.dll -Wl,"--strip-all" -Wl,"--export-all-symbols" $(DLL_OBJS)
+
+
+# We have .pc files for pkg-config users.
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = libpcre.pc libpcreposix.pc
+if WITH_PCRE16
+pkgconfig_DATA += libpcre16.pc
+endif
+if WITH_PCRE32
+pkgconfig_DATA += libpcre32.pc
+endif
+if WITH_PCRE_CPP
+pkgconfig_DATA += libpcrecpp.pc
+endif
+
+# Note that pcrecpp.3 is not in this list, but is included separately below.
+
+dist_man_MANS = \
+ doc/pcre-config.1 \
+ doc/pcre.3 \
+ doc/pcre16.3 \
+ doc/pcre32.3 \
+ doc/pcre_assign_jit_stack.3 \
+ doc/pcre_compile.3 \
+ doc/pcre_compile2.3 \
+ doc/pcre_config.3 \
+ doc/pcre_copy_named_substring.3 \
+ doc/pcre_copy_substring.3 \
+ doc/pcre_dfa_exec.3 \
+ doc/pcre_exec.3 \
+ doc/pcre_free_study.3 \
+ doc/pcre_free_substring.3 \
+ doc/pcre_free_substring_list.3 \
+ doc/pcre_fullinfo.3 \
+ doc/pcre_get_named_substring.3 \
+ doc/pcre_get_stringnumber.3 \
+ doc/pcre_get_stringtable_entries.3 \
+ doc/pcre_get_substring.3 \
+ doc/pcre_get_substring_list.3 \
+ doc/pcre_jit_exec.3 \
+ doc/pcre_jit_stack_alloc.3 \
+ doc/pcre_jit_stack_free.3 \
+ doc/pcre_maketables.3 \
+ doc/pcre_pattern_to_host_byte_order.3 \
+ doc/pcre_refcount.3 \
+ doc/pcre_study.3 \
+ doc/pcre_utf16_to_host_byte_order.3 \
+ doc/pcre_utf32_to_host_byte_order.3 \
+ doc/pcre_version.3 \
+ doc/pcreapi.3 \
+ doc/pcrebuild.3 \
+ doc/pcrecallout.3 \
+ doc/pcrecompat.3 \
+ doc/pcredemo.3 \
+ doc/pcregrep.1 \
+ doc/pcrejit.3 \
+ doc/pcrelimits.3 \
+ doc/pcrematching.3 \
+ doc/pcrepartial.3 \
+ doc/pcrepattern.3 \
+ doc/pcreperform.3 \
+ doc/pcreposix.3 \
+ doc/pcreprecompile.3 \
+ doc/pcresample.3 \
+ doc/pcrestack.3 \
+ doc/pcresyntax.3 \
+ doc/pcretest.1 \
+ doc/pcreunicode.3
+
+# Arrange for the per-function man pages to have 16- and 32-bit names as well.
+install-data-hook:
+ ln -sf pcre_assign_jit_stack.3 $(DESTDIR)$(man3dir)/pcre16_assign_jit_stack.3
+ ln -sf pcre_compile.3 $(DESTDIR)$(man3dir)/pcre16_compile.3
+ ln -sf pcre_compile2.3 $(DESTDIR)$(man3dir)/pcre16_compile2.3
+ ln -sf pcre_config.3 $(DESTDIR)$(man3dir)/pcre16_config.3
+ ln -sf pcre_copy_named_substring.3 $(DESTDIR)$(man3dir)/pcre16_copy_named_substring.3
+ ln -sf pcre_copy_substring.3 $(DESTDIR)$(man3dir)/pcre16_copy_substring.3
+ ln -sf pcre_dfa_exec.3 $(DESTDIR)$(man3dir)/pcre16_dfa_exec.3
+ ln -sf pcre_exec.3 $(DESTDIR)$(man3dir)/pcre16_exec.3
+ ln -sf pcre_free_study.3 $(DESTDIR)$(man3dir)/pcre16_free_study.3
+ ln -sf pcre_free_substring.3 $(DESTDIR)$(man3dir)/pcre16_free_substring.3
+ ln -sf pcre_free_substring_list.3 $(DESTDIR)$(man3dir)/pcre16_free_substring_list.3
+ ln -sf pcre_fullinfo.3 $(DESTDIR)$(man3dir)/pcre16_fullinfo.3
+ ln -sf pcre_get_named_substring.3 $(DESTDIR)$(man3dir)/pcre16_get_named_substring.3
+ ln -sf pcre_get_stringnumber.3 $(DESTDIR)$(man3dir)/pcre16_get_stringnumber.3
+ ln -sf pcre_get_stringtable_entries.3 $(DESTDIR)$(man3dir)/pcre16_get_stringtable_entries.3
+ ln -sf pcre_get_substring.3 $(DESTDIR)$(man3dir)/pcre16_get_substring.3
+ ln -sf pcre_get_substring_list.3 $(DESTDIR)$(man3dir)/pcre16_get_substring_list.3
+ ln -sf pcre_jit_exec.3 $(DESTDIR)$(man3dir)/pcre16_jit_exec.3
+ ln -sf pcre_jit_stack_alloc.3 $(DESTDIR)$(man3dir)/pcre16_jit_stack_alloc.3
+ ln -sf pcre_jit_stack_free.3 $(DESTDIR)$(man3dir)/pcre16_jit_stack_free.3
+ ln -sf pcre_maketables.3 $(DESTDIR)$(man3dir)/pcre16_maketables.3
+ ln -sf pcre_pattern_to_host_byte_order.3 $(DESTDIR)$(man3dir)/pcre16_pattern_to_host_byte_order.3
+ ln -sf pcre_refcount.3 $(DESTDIR)$(man3dir)/pcre16_refcount.3
+ ln -sf pcre_study.3 $(DESTDIR)$(man3dir)/pcre16_study.3
+ ln -sf pcre_utf16_to_host_byte_order.3 $(DESTDIR)$(man3dir)/pcre16_utf16_to_host_byte_order.3
+ ln -sf pcre_version.3 $(DESTDIR)$(man3dir)/pcre16_version.3
+ ln -sf pcre_assign_jit_stack.3 $(DESTDIR)$(man3dir)/pcre32_assign_jit_stack.3
+ ln -sf pcre_compile.3 $(DESTDIR)$(man3dir)/pcre32_compile.3
+ ln -sf pcre_compile2.3 $(DESTDIR)$(man3dir)/pcre32_compile2.3
+ ln -sf pcre_config.3 $(DESTDIR)$(man3dir)/pcre32_config.3
+ ln -sf pcre_copy_named_substring.3 $(DESTDIR)$(man3dir)/pcre32_copy_named_substring.3
+ ln -sf pcre_copy_substring.3 $(DESTDIR)$(man3dir)/pcre32_copy_substring.3
+ ln -sf pcre_dfa_exec.3 $(DESTDIR)$(man3dir)/pcre32_dfa_exec.3
+ ln -sf pcre_exec.3 $(DESTDIR)$(man3dir)/pcre32_exec.3
+ ln -sf pcre_free_study.3 $(DESTDIR)$(man3dir)/pcre32_free_study.3
+ ln -sf pcre_free_substring.3 $(DESTDIR)$(man3dir)/pcre32_free_substring.3
+ ln -sf pcre_free_substring_list.3 $(DESTDIR)$(man3dir)/pcre32_free_substring_list.3
+ ln -sf pcre_fullinfo.3 $(DESTDIR)$(man3dir)/pcre32_fullinfo.3
+ ln -sf pcre_get_named_substring.3 $(DESTDIR)$(man3dir)/pcre32_get_named_substring.3
+ ln -sf pcre_get_stringnumber.3 $(DESTDIR)$(man3dir)/pcre32_get_stringnumber.3
+ ln -sf pcre_get_stringtable_entries.3 $(DESTDIR)$(man3dir)/pcre32_get_stringtable_entries.3
+ ln -sf pcre_get_substring.3 $(DESTDIR)$(man3dir)/pcre32_get_substring.3
+ ln -sf pcre_get_substring_list.3 $(DESTDIR)$(man3dir)/pcre32_get_substring_list.3
+ ln -sf pcre_jit_exec.3 $(DESTDIR)$(man3dir)/pcre32_jit_exec.3
+ ln -sf pcre_jit_stack_alloc.3 $(DESTDIR)$(man3dir)/pcre32_jit_stack_alloc.3
+ ln -sf pcre_jit_stack_free.3 $(DESTDIR)$(man3dir)/pcre32_jit_stack_free.3
+ ln -sf pcre_maketables.3 $(DESTDIR)$(man3dir)/pcre32_maketables.3
+ ln -sf pcre_pattern_to_host_byte_order.3 $(DESTDIR)$(man3dir)/pcre32_pattern_to_host_byte_order.3
+ ln -sf pcre_refcount.3 $(DESTDIR)$(man3dir)/pcre32_refcount.3
+ ln -sf pcre_study.3 $(DESTDIR)$(man3dir)/pcre32_study.3
+ ln -sf pcre_utf32_to_host_byte_order.3 $(DESTDIR)$(man3dir)/pcre32_utf32_to_host_byte_order.3
+ ln -sf pcre_version.3 $(DESTDIR)$(man3dir)/pcre32_version.3
+
+pcrecpp_man = doc/pcrecpp.3
+EXTRA_DIST += $(pcrecpp_man)
+
+if WITH_PCRE_CPP
+man_MANS = $(pcrecpp_man)
+endif
+
+# gcov/lcov code coverage reporting
+
+if WITH_GCOV
+
+# Coverage reporting targets:
+#
+# coverage: Create a coverage report from 'make check'
+# coverage-baseline: Capture baseline coverage information
+# coverage-reset: This zeros the coverage counters only
+# coverage-report: This creates the coverage report only
+# coverage-clean-report: This removes the generated coverage report
+# without cleaning the coverage data itself
+# coverage-clean-data: This removes the captured coverage data without
+# removing the coverage files created at compile time (*.gcno)
+# coverage-clean: This cleans all coverage data including the generated
+# coverage report.
+
+COVERAGE_TEST_NAME = $(PACKAGE)
+COVERAGE_NAME = $(PACKAGE)-$(VERSION)
+COVERAGE_OUTPUT_FILE = $(COVERAGE_NAME)-coverage.info
+COVERAGE_OUTPUT_DIR = $(COVERAGE_NAME)-coverage
+COVERAGE_LCOV_EXTRA_FLAGS =
+COVERAGE_GENHTML_EXTRA_FLAGS =
+
+coverage_quiet = $(coverage_quiet_$(V))
+coverage_quiet_ = $(coverage_quiet_$(AM_DEFAULT_VERBOSITY))
+coverage_quiet_0 = --quiet
+
+coverage-check: all
+ -$(MAKE) $(AM_MAKEFLAGS) -k check
+
+coverage-baseline:
+ $(LCOV) $(coverage_quiet) \
+ --directory $(top_builddir) \
+ --output-file "$(COVERAGE_OUTPUT_FILE)" \
+ --capture \
+ --initial
+
+coverage-report:
+ $(LCOV) $(coverage_quiet) \
+ --directory $(top_builddir) \
+ --capture \
+ --output-file "$(COVERAGE_OUTPUT_FILE).tmp" \
+ --test-name "$(COVERAGE_TEST_NAME)" \
+ --no-checksum \
+ --compat-libtool \
+ $(COVERAGE_LCOV_EXTRA_FLAGS)
+ $(LCOV) $(coverage_quiet) \
+ --directory $(top_builddir) \
+ --output-file "$(COVERAGE_OUTPUT_FILE)" \
+ --remove "$(COVERAGE_OUTPUT_FILE).tmp" \
+ "/tmp/*" \
+ "/usr/include/*" \
+ "$(includedir)/*"
+ -@rm -f "$(COVERAGE_OUTPUT_FILE).tmp"
+ LANG=C $(GENHTML) $(coverage_quiet) \
+ --prefix $(top_builddir) \
+ --output-directory "$(COVERAGE_OUTPUT_DIR)" \
+ --title "$(PACKAGE) $(VERSION) Code Coverage Report" \
+ --show-details "$(COVERAGE_OUTPUT_FILE)" \
+ --legend \
+ $(COVERAGE_GENHTML_EXTRA_FLAGS)
+ @echo "Code coverage report written to file://$(abs_builddir)/$(COVERAGE_OUTPUT_DIR)/index.html"
+
+coverage-reset:
+ -$(LCOV) $(coverage_quiet) --zerocounters --directory $(top_builddir)
+
+coverage-clean-report:
+ -rm -f "$(COVERAGE_OUTPUT_FILE)" "$(COVERAGE_OUTPUT_FILE).tmp"
+ -rm -rf "$(COVERAGE_OUTPUT_DIR)"
+
+coverage-clean-data:
+ -find $(top_builddir) -name "*.gcda" -delete
+
+coverage-clean: coverage-reset coverage-clean-report coverage-clean-data
+ -find $(top_builddir) -name "*.gcno" -delete
+
+coverage-distclean: coverage-clean
+
+coverage: coverage-reset coverage-baseline coverage-check coverage-report
+clean-local: coverage-clean
+distclean-local: coverage-distclean
+
+.PHONY: coverage coverage-baseline coverage-check coverage-report coverage-reset coverage-clean-report coverage-clean-data coverage-clean coverage-distclean
+
+else
+
+coverage:
+ @echo "Configuring with --enable-coverage required to generate code coverage report."
+
+endif # WITH_GCOV
+
+## CMake support
+
+EXTRA_DIST += \
+ cmake/COPYING-CMAKE-SCRIPTS \
+ cmake/FindPackageHandleStandardArgs.cmake \
+ cmake/FindReadline.cmake \
+ cmake/FindEditline.cmake \
+ CMakeLists.txt \
+ config-cmake.h.in
+
+## end Makefile.am
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 0000000..6d03912
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,3296 @@
+# Makefile.in generated by automake 1.15 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2014 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+
+
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+ if test -z '$(MAKELEVEL)'; then \
+ false; \
+ elif test -n '$(MAKE_HOST)'; then \
+ true; \
+ elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+ true; \
+ else \
+ false; \
+ fi; \
+}
+am__make_running_with_option = \
+ case $${target_option-} in \
+ ?) ;; \
+ *) echo "am__make_running_with_option: internal error: invalid" \
+ "target option '$${target_option-}' specified" >&2; \
+ exit 1;; \
+ esac; \
+ has_opt=no; \
+ sane_makeflags=$$MAKEFLAGS; \
+ if $(am__is_gnu_make); then \
+ sane_makeflags=$$MFLAGS; \
+ else \
+ case $$MAKEFLAGS in \
+ *\\[\ \ ]*) \
+ bs=\\; \
+ sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+ | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \
+ esac; \
+ fi; \
+ skip_next=no; \
+ strip_trailopt () \
+ { \
+ flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+ }; \
+ for flg in $$sane_makeflags; do \
+ test $$skip_next = yes && { skip_next=no; continue; }; \
+ case $$flg in \
+ *=*|--*) continue;; \
+ -*I) strip_trailopt 'I'; skip_next=yes;; \
+ -*I?*) strip_trailopt 'I';; \
+ -*O) strip_trailopt 'O'; skip_next=yes;; \
+ -*O?*) strip_trailopt 'O';; \
+ -*l) strip_trailopt 'l'; skip_next=yes;; \
+ -*l?*) strip_trailopt 'l';; \
+ -[dEDm]) skip_next=yes;; \
+ -[JT]) skip_next=yes;; \
+ esac; \
+ case $$flg in \
+ *$$target_option*) has_opt=yes; break;; \
+ esac; \
+ done; \
+ test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
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+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+ACLOCAL_AMFLAGS = -I m4
+dist_doc_DATA = \
+ doc/pcre.txt \
+ doc/pcre-config.txt \
+ doc/pcregrep.txt \
+ doc/pcretest.txt \
+ AUTHORS \
+ COPYING \
+ ChangeLog \
+ LICENCE \
+ NEWS \
+ README
+
+
+# Note that pcrecpp.html is not in this list; it is listed separately below.
+dist_html_DATA = \
+ doc/html/NON-AUTOTOOLS-BUILD.txt \
+ doc/html/README.txt \
+ doc/html/index.html \
+ doc/html/pcre-config.html \
+ doc/html/pcre.html \
+ doc/html/pcre16.html \
+ doc/html/pcre32.html \
+ doc/html/pcre_assign_jit_stack.html \
+ doc/html/pcre_compile.html \
+ doc/html/pcre_compile2.html \
+ doc/html/pcre_config.html \
+ doc/html/pcre_copy_named_substring.html \
+ doc/html/pcre_copy_substring.html \
+ doc/html/pcre_dfa_exec.html \
+ doc/html/pcre_exec.html \
+ doc/html/pcre_free_study.html \
+ doc/html/pcre_free_substring.html \
+ doc/html/pcre_free_substring_list.html \
+ doc/html/pcre_fullinfo.html \
+ doc/html/pcre_get_named_substring.html \
+ doc/html/pcre_get_stringnumber.html \
+ doc/html/pcre_get_stringtable_entries.html \
+ doc/html/pcre_get_substring.html \
+ doc/html/pcre_get_substring_list.html \
+ doc/html/pcre_jit_exec.html \
+ doc/html/pcre_jit_stack_alloc.html \
+ doc/html/pcre_jit_stack_free.html \
+ doc/html/pcre_maketables.html \
+ doc/html/pcre_pattern_to_host_byte_order.html \
+ doc/html/pcre_refcount.html \
+ doc/html/pcre_study.html \
+ doc/html/pcre_utf16_to_host_byte_order.html \
+ doc/html/pcre_utf32_to_host_byte_order.html \
+ doc/html/pcre_version.html \
+ doc/html/pcreapi.html \
+ doc/html/pcrebuild.html \
+ doc/html/pcrecallout.html \
+ doc/html/pcrecompat.html \
+ doc/html/pcredemo.html \
+ doc/html/pcregrep.html \
+ doc/html/pcrejit.html \
+ doc/html/pcrelimits.html \
+ doc/html/pcrematching.html \
+ doc/html/pcrepartial.html \
+ doc/html/pcrepattern.html \
+ doc/html/pcreperform.html \
+ doc/html/pcreposix.html \
+ doc/html/pcreprecompile.html \
+ doc/html/pcresample.html \
+ doc/html/pcrestack.html \
+ doc/html/pcresyntax.html \
+ doc/html/pcretest.html \
+ doc/html/pcreunicode.html
+
+pcrecpp_html = doc/html/pcrecpp.html
+dist_noinst_DATA = $(pcrecpp_html)
+@WITH_PCRE_CPP_TRUE@html_DATA = $(pcrecpp_html)
+
+# The Libtool libraries to install. We'll add to this later.
+lib_LTLIBRARIES = $(am__append_4) $(am__append_5) $(am__append_6) \
+ $(am__append_20) $(am__append_22)
+check_SCRIPTS =
+dist_noinst_SCRIPTS = RunTest $(am__append_39)
+
+# Additional files to delete on 'make clean' and 'make maintainer-clean'.
+CLEANFILES = pcre_chartables.c testsavedregex teststderr testtemp* \
+ testtry testNinput testtrygrep teststderrgrep testNinputgrep
+MAINTAINERCLEANFILES = pcre.h.generic config.h.generic
+
+# Additional files to bundle with the distribution, over and above what
+# the Autotools include by default.
+
+# These files contain additional m4 macros that are used by autoconf.
+
+# These files contain maintenance information
+
+# These files are used in the preparation of a release
+
+# These files are to do with building for Virtual Pascal
+
+# These files are usable versions of pcre.h and config.h that are distributed
+# for the benefit of people who are building PCRE manually, without the
+# Autotools support.
+
+# The pcre_chartables.c.dist file is the default version of pcre_chartables.c,
+# used unless --enable-rebuild-chartables is specified.
+
+# The JIT compiler lives in a separate directory, but its files are #included
+# when pcre_jit_compile.c is processed, so they must be distributed.
+
+# PCRE demonstration program. No longer built automatcally. The point is that
+# the users should build it themselves. So just distribute the source.
+# noinst_PROGRAMS += pcredemo
+# pcredemo_SOURCES = pcredemo.c
+# pcredemo_LDADD = libpcre.la
+EXTRA_DIST = m4/ax_pthread.m4 m4/pcre_visibility.m4 doc/perltest.txt \
+ NON-UNIX-USE NON-AUTOTOOLS-BUILD HACKING PrepareRelease \
+ CheckMan CleanTxt Detrail 132html doc/index.html.src \
+ makevp.bat makevp_c.txt makevp_l.txt pcregexp.pas \
+ pcre.h.generic config.h.generic pcre_chartables.c.dist \
+ sljit/sljitConfig.h sljit/sljitConfigInternal.h \
+ sljit/sljitExecAllocator.c sljit/sljitLir.c sljit/sljitLir.h \
+ sljit/sljitNativeARM_32.c sljit/sljitNativeARM_64.c \
+ sljit/sljitNativeARM_T2_32.c sljit/sljitNativeMIPS_32.c \
+ sljit/sljitNativeMIPS_64.c sljit/sljitNativeMIPS_common.c \
+ sljit/sljitNativePPC_32.c sljit/sljitNativePPC_64.c \
+ sljit/sljitNativePPC_common.c sljit/sljitNativeSPARC_32.c \
+ sljit/sljitNativeSPARC_common.c sljit/sljitNativeTILEGX_64.c \
+ sljit/sljitNativeTILEGX-encoder.c sljit/sljitNativeX86_32.c \
+ sljit/sljitNativeX86_64.c sljit/sljitNativeX86_common.c \
+ sljit/sljitUtils.c RunTest.bat testdata/grepbinary \
+ testdata/grepfilelist testdata/grepinput testdata/grepinput3 \
+ testdata/grepinput8 testdata/grepinputv testdata/grepinputx \
+ testdata/greplist testdata/grepoutput testdata/grepoutput8 \
+ testdata/grepoutputN testdata/greppatN4 testdata/saved16 \
+ testdata/saved16BE-1 testdata/saved16BE-2 testdata/saved16LE-1 \
+ testdata/saved16LE-2 testdata/saved32 testdata/saved32BE-1 \
+ testdata/saved32BE-2 testdata/saved32LE-1 testdata/saved32LE-2 \
+ testdata/saved8 testdata/testinput1 testdata/testinput2 \
+ testdata/testinput3 testdata/testinput4 testdata/testinput5 \
+ testdata/testinput6 testdata/testinput7 testdata/testinput8 \
+ testdata/testinput9 testdata/testinput10 testdata/testinput11 \
+ testdata/testinput12 testdata/testinput13 testdata/testinput14 \
+ testdata/testinput15 testdata/testinput16 testdata/testinput17 \
+ testdata/testinput18 testdata/testinput19 testdata/testinput20 \
+ testdata/testinput21 testdata/testinput22 testdata/testinput23 \
+ testdata/testinput24 testdata/testinput25 testdata/testinput26 \
+ testdata/testinputEBC testdata/testoutput1 \
+ testdata/testoutput2 testdata/testoutput3 \
+ testdata/testoutput3A testdata/testoutput3B \
+ testdata/testoutput4 testdata/testoutput5 testdata/testoutput6 \
+ testdata/testoutput7 testdata/testoutput8 testdata/testoutput9 \
+ testdata/testoutput10 testdata/testoutput11-8 \
+ testdata/testoutput11-16 testdata/testoutput11-32 \
+ testdata/testoutput12 testdata/testoutput13 \
+ testdata/testoutput14 testdata/testoutput15 \
+ testdata/testoutput16 testdata/testoutput17 \
+ testdata/testoutput18-16 testdata/testoutput18-32 \
+ testdata/testoutput19 testdata/testoutput20 \
+ testdata/testoutput21-16 testdata/testoutput21-32 \
+ testdata/testoutput22-16 testdata/testoutput22-32 \
+ testdata/testoutput23 testdata/testoutput24 \
+ testdata/testoutput25 testdata/testoutput26 \
+ testdata/testoutputEBC testdata/valgrind-jit.supp \
+ testdata/wintestinput3 testdata/wintestoutput3 perltest.pl \
+ pcredemo.c $(pcrecpp_man) cmake/COPYING-CMAKE-SCRIPTS \
+ cmake/FindPackageHandleStandardArgs.cmake \
+ cmake/FindReadline.cmake cmake/FindEditline.cmake \
+ CMakeLists.txt config-cmake.h.in
+
+# These are the header files we'll install. We do not distribute pcre.h because
+# it is generated from pcre.h.in.
+nodist_include_HEADERS = pcre.h $(am__append_1)
+include_HEADERS = pcreposix.h $(am__append_2)
+bin_SCRIPTS = pcre-config
+@WITH_REBUILD_CHARTABLES_TRUE@dftables_SOURCES = dftables.c
+BUILT_SOURCES = pcre_chartables.c
+@WITH_PCRE8_TRUE@libpcre_la_SOURCES = \
+@WITH_PCRE8_TRUE@ pcre_byte_order.c \
+@WITH_PCRE8_TRUE@ pcre_compile.c \
+@WITH_PCRE8_TRUE@ pcre_config.c \
+@WITH_PCRE8_TRUE@ pcre_dfa_exec.c \
+@WITH_PCRE8_TRUE@ pcre_exec.c \
+@WITH_PCRE8_TRUE@ pcre_fullinfo.c \
+@WITH_PCRE8_TRUE@ pcre_get.c \
+@WITH_PCRE8_TRUE@ pcre_globals.c \
+@WITH_PCRE8_TRUE@ pcre_internal.h \
+@WITH_PCRE8_TRUE@ pcre_jit_compile.c \
+@WITH_PCRE8_TRUE@ pcre_maketables.c \
+@WITH_PCRE8_TRUE@ pcre_newline.c \
+@WITH_PCRE8_TRUE@ pcre_ord2utf8.c \
+@WITH_PCRE8_TRUE@ pcre_refcount.c \
+@WITH_PCRE8_TRUE@ pcre_string_utils.c \
+@WITH_PCRE8_TRUE@ pcre_study.c \
+@WITH_PCRE8_TRUE@ pcre_tables.c \
+@WITH_PCRE8_TRUE@ pcre_ucd.c \
+@WITH_PCRE8_TRUE@ pcre_valid_utf8.c \
+@WITH_PCRE8_TRUE@ pcre_version.c \
+@WITH_PCRE8_TRUE@ pcre_xclass.c \
+@WITH_PCRE8_TRUE@ ucp.h
+
+@WITH_PCRE8_TRUE@libpcre_la_CFLAGS = $(VISIBILITY_CFLAGS) $(AM_CFLAGS) \
+@WITH_PCRE8_TRUE@ $(am__append_7) $(am__append_10)
+@WITH_PCRE8_TRUE@libpcre_la_LIBADD =
+@WITH_PCRE8_TRUE@nodist_libpcre_la_SOURCES = \
+@WITH_PCRE8_TRUE@ pcre_chartables.c
+
+@WITH_PCRE16_TRUE@libpcre16_la_SOURCES = \
+@WITH_PCRE16_TRUE@ pcre16_byte_order.c \
+@WITH_PCRE16_TRUE@ pcre16_chartables.c \
+@WITH_PCRE16_TRUE@ pcre16_compile.c \
+@WITH_PCRE16_TRUE@ pcre16_config.c \
+@WITH_PCRE16_TRUE@ pcre16_dfa_exec.c \
+@WITH_PCRE16_TRUE@ pcre16_exec.c \
+@WITH_PCRE16_TRUE@ pcre16_fullinfo.c \
+@WITH_PCRE16_TRUE@ pcre16_get.c \
+@WITH_PCRE16_TRUE@ pcre16_globals.c \
+@WITH_PCRE16_TRUE@ pcre16_jit_compile.c \
+@WITH_PCRE16_TRUE@ pcre16_maketables.c \
+@WITH_PCRE16_TRUE@ pcre16_newline.c \
+@WITH_PCRE16_TRUE@ pcre16_ord2utf16.c \
+@WITH_PCRE16_TRUE@ pcre16_refcount.c \
+@WITH_PCRE16_TRUE@ pcre16_string_utils.c \
+@WITH_PCRE16_TRUE@ pcre16_study.c \
+@WITH_PCRE16_TRUE@ pcre16_tables.c \
+@WITH_PCRE16_TRUE@ pcre16_ucd.c \
+@WITH_PCRE16_TRUE@ pcre16_utf16_utils.c \
+@WITH_PCRE16_TRUE@ pcre16_valid_utf16.c \
+@WITH_PCRE16_TRUE@ pcre16_version.c \
+@WITH_PCRE16_TRUE@ pcre16_xclass.c
+
+@WITH_PCRE16_TRUE@libpcre16_la_CFLAGS = $(VISIBILITY_CFLAGS) \
+@WITH_PCRE16_TRUE@ $(AM_CFLAGS) $(am__append_8) \
+@WITH_PCRE16_TRUE@ $(am__append_11)
+@WITH_PCRE16_TRUE@libpcre16_la_LIBADD =
+@WITH_PCRE16_TRUE@nodist_libpcre16_la_SOURCES = \
+@WITH_PCRE16_TRUE@ pcre_chartables.c
+
+@WITH_PCRE32_TRUE@libpcre32_la_SOURCES = \
+@WITH_PCRE32_TRUE@ pcre32_byte_order.c \
+@WITH_PCRE32_TRUE@ pcre32_chartables.c \
+@WITH_PCRE32_TRUE@ pcre32_compile.c \
+@WITH_PCRE32_TRUE@ pcre32_config.c \
+@WITH_PCRE32_TRUE@ pcre32_dfa_exec.c \
+@WITH_PCRE32_TRUE@ pcre32_exec.c \
+@WITH_PCRE32_TRUE@ pcre32_fullinfo.c \
+@WITH_PCRE32_TRUE@ pcre32_get.c \
+@WITH_PCRE32_TRUE@ pcre32_globals.c \
+@WITH_PCRE32_TRUE@ pcre32_jit_compile.c \
+@WITH_PCRE32_TRUE@ pcre32_maketables.c \
+@WITH_PCRE32_TRUE@ pcre32_newline.c \
+@WITH_PCRE32_TRUE@ pcre32_ord2utf32.c \
+@WITH_PCRE32_TRUE@ pcre32_refcount.c \
+@WITH_PCRE32_TRUE@ pcre32_string_utils.c \
+@WITH_PCRE32_TRUE@ pcre32_study.c \
+@WITH_PCRE32_TRUE@ pcre32_tables.c \
+@WITH_PCRE32_TRUE@ pcre32_ucd.c \
+@WITH_PCRE32_TRUE@ pcre32_utf32_utils.c \
+@WITH_PCRE32_TRUE@ pcre32_valid_utf32.c \
+@WITH_PCRE32_TRUE@ pcre32_version.c \
+@WITH_PCRE32_TRUE@ pcre32_xclass.c
+
+@WITH_PCRE32_TRUE@libpcre32_la_CFLAGS = $(VISIBILITY_CFLAGS) \
+@WITH_PCRE32_TRUE@ $(AM_CFLAGS) $(am__append_9) \
+@WITH_PCRE32_TRUE@ $(am__append_12)
+@WITH_PCRE32_TRUE@libpcre32_la_LIBADD =
+@WITH_PCRE32_TRUE@nodist_libpcre32_la_SOURCES = \
+@WITH_PCRE32_TRUE@ pcre_chartables.c
+
+@WITH_PCRE8_TRUE@libpcre_la_LDFLAGS = $(EXTRA_LIBPCRE_LDFLAGS)
+@WITH_PCRE16_TRUE@libpcre16_la_LDFLAGS = $(EXTRA_LIBPCRE16_LDFLAGS)
+@WITH_PCRE32_TRUE@libpcre32_la_LDFLAGS = $(EXTRA_LIBPCRE32_LDFLAGS)
+@WITH_JIT_TRUE@pcre_jit_test_SOURCES = pcre_jit_test.c
+@WITH_JIT_TRUE@pcre_jit_test_CFLAGS = $(AM_CFLAGS) $(am__append_18)
+@WITH_JIT_TRUE@pcre_jit_test_LDADD = $(am__append_15) $(am__append_16) \
+@WITH_JIT_TRUE@ $(am__append_17) $(am__append_19)
+@WITH_PCRE8_TRUE@libpcreposix_la_SOURCES = \
+@WITH_PCRE8_TRUE@ pcreposix.c
+
+@WITH_PCRE8_TRUE@libpcreposix_la_CFLAGS = $(VISIBILITY_CFLAGS) \
+@WITH_PCRE8_TRUE@ $(AM_CFLAGS) $(am__append_21)
+@WITH_PCRE8_TRUE@libpcreposix_la_LDFLAGS = $(EXTRA_LIBPCREPOSIX_LDFLAGS)
+@WITH_PCRE8_TRUE@libpcreposix_la_LIBADD = libpcre.la
+@WITH_PCRE_CPP_TRUE@libpcrecpp_la_SOURCES = \
+@WITH_PCRE_CPP_TRUE@ pcrecpp_internal.h \
+@WITH_PCRE_CPP_TRUE@ pcrecpp.cc \
+@WITH_PCRE_CPP_TRUE@ pcre_scanner.cc \
+@WITH_PCRE_CPP_TRUE@ pcre_stringpiece.cc
+
+@WITH_PCRE_CPP_TRUE@libpcrecpp_la_CXXFLAGS = $(VISIBILITY_CXXFLAGS) \
+@WITH_PCRE_CPP_TRUE@ $(AM_CXXFLAGS) $(am__append_25)
+@WITH_PCRE_CPP_TRUE@libpcrecpp_la_LDFLAGS = $(EXTRA_LIBPCRECPP_LDFLAGS)
+@WITH_PCRE_CPP_TRUE@libpcrecpp_la_LIBADD = libpcre.la
+@WITH_PCRE_CPP_TRUE@pcrecpp_unittest_SOURCES = pcrecpp_unittest.cc
+@WITH_PCRE_CPP_TRUE@pcrecpp_unittest_CXXFLAGS = $(AM_CXXFLAGS)
+@WITH_PCRE_CPP_TRUE@pcrecpp_unittest_LDADD = libpcrecpp.la \
+@WITH_PCRE_CPP_TRUE@ $(am__append_26)
+@WITH_PCRE_CPP_TRUE@pcre_scanner_unittest_SOURCES = pcre_scanner_unittest.cc
+@WITH_PCRE_CPP_TRUE@pcre_scanner_unittest_CXXFLAGS = $(AM_CXXFLAGS)
+@WITH_PCRE_CPP_TRUE@pcre_scanner_unittest_LDADD = libpcrecpp.la \
+@WITH_PCRE_CPP_TRUE@ $(am__append_27)
+@WITH_PCRE_CPP_TRUE@pcre_stringpiece_unittest_SOURCES = pcre_stringpiece_unittest.cc
+@WITH_PCRE_CPP_TRUE@pcre_stringpiece_unittest_CXXFLAGS = $(AM_CXXFLAGS)
+@WITH_PCRE_CPP_TRUE@pcre_stringpiece_unittest_LDADD = libpcrecpp.la \
+@WITH_PCRE_CPP_TRUE@ $(am__append_28)
+pcretest_SOURCES = pcretest.c $(am__append_29) $(am__append_31) \
+ $(am__append_33)
+pcretest_CFLAGS = $(AM_CFLAGS) $(am__append_35) $(am__append_36)
+pcretest_LDADD = $(LIBREADLINE) $(am__append_30) $(am__append_32) \
+ $(am__append_34) $(am__append_37)
+@WITH_PCRE8_TRUE@pcregrep_SOURCES = pcregrep.c
+@WITH_PCRE8_TRUE@pcregrep_CFLAGS = $(AM_CFLAGS) $(am__append_41)
+@WITH_PCRE8_TRUE@pcregrep_LDADD = $(LIBZ) $(LIBBZ2) libpcre.la \
+@WITH_PCRE8_TRUE@ libpcreposix.la $(am__append_42)
+
+# A PCRE user submitted the following addition, saying that it "will allow
+# anyone using the 'mingw32' compiler to simply type 'make pcre.dll' and get a
+# nice DLL for Windows use". (It is used by the pcre.dll target.)
+DLL_OBJS = pcre_byte_order.o pcre_compile.o pcre_config.o \
+ pcre_dfa_exec.o pcre_exec.o pcre_fullinfo.o pcre_get.o \
+ pcre_globals.o pcre_jit_compile.o pcre_maketables.o \
+ pcre_newline.o pcre_ord2utf8.o pcre_refcount.o \
+ pcre_study.o pcre_tables.o pcre_ucd.o \
+ pcre_valid_utf8.o pcre_version.o pcre_chartables.o \
+ pcre_xclass.o
+
+
+# We have .pc files for pkg-config users.
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = libpcre.pc libpcreposix.pc $(am__append_43) \
+ $(am__append_44) $(am__append_45)
+
+# Note that pcrecpp.3 is not in this list, but is included separately below.
+dist_man_MANS = \
+ doc/pcre-config.1 \
+ doc/pcre.3 \
+ doc/pcre16.3 \
+ doc/pcre32.3 \
+ doc/pcre_assign_jit_stack.3 \
+ doc/pcre_compile.3 \
+ doc/pcre_compile2.3 \
+ doc/pcre_config.3 \
+ doc/pcre_copy_named_substring.3 \
+ doc/pcre_copy_substring.3 \
+ doc/pcre_dfa_exec.3 \
+ doc/pcre_exec.3 \
+ doc/pcre_free_study.3 \
+ doc/pcre_free_substring.3 \
+ doc/pcre_free_substring_list.3 \
+ doc/pcre_fullinfo.3 \
+ doc/pcre_get_named_substring.3 \
+ doc/pcre_get_stringnumber.3 \
+ doc/pcre_get_stringtable_entries.3 \
+ doc/pcre_get_substring.3 \
+ doc/pcre_get_substring_list.3 \
+ doc/pcre_jit_exec.3 \
+ doc/pcre_jit_stack_alloc.3 \
+ doc/pcre_jit_stack_free.3 \
+ doc/pcre_maketables.3 \
+ doc/pcre_pattern_to_host_byte_order.3 \
+ doc/pcre_refcount.3 \
+ doc/pcre_study.3 \
+ doc/pcre_utf16_to_host_byte_order.3 \
+ doc/pcre_utf32_to_host_byte_order.3 \
+ doc/pcre_version.3 \
+ doc/pcreapi.3 \
+ doc/pcrebuild.3 \
+ doc/pcrecallout.3 \
+ doc/pcrecompat.3 \
+ doc/pcredemo.3 \
+ doc/pcregrep.1 \
+ doc/pcrejit.3 \
+ doc/pcrelimits.3 \
+ doc/pcrematching.3 \
+ doc/pcrepartial.3 \
+ doc/pcrepattern.3 \
+ doc/pcreperform.3 \
+ doc/pcreposix.3 \
+ doc/pcreprecompile.3 \
+ doc/pcresample.3 \
+ doc/pcrestack.3 \
+ doc/pcresyntax.3 \
+ doc/pcretest.1 \
+ doc/pcreunicode.3
+
+pcrecpp_man = doc/pcrecpp.3
+@WITH_PCRE_CPP_TRUE@man_MANS = $(pcrecpp_man)
+
+# gcov/lcov code coverage reporting
+
+# Coverage reporting targets:
+#
+# coverage: Create a coverage report from 'make check'
+# coverage-baseline: Capture baseline coverage information
+# coverage-reset: This zeros the coverage counters only
+# coverage-report: This creates the coverage report only
+# coverage-clean-report: This removes the generated coverage report
+# without cleaning the coverage data itself
+# coverage-clean-data: This removes the captured coverage data without
+# removing the coverage files created at compile time (*.gcno)
+# coverage-clean: This cleans all coverage data including the generated
+# coverage report.
+@WITH_GCOV_TRUE@COVERAGE_TEST_NAME = $(PACKAGE)
+@WITH_GCOV_TRUE@COVERAGE_NAME = $(PACKAGE)-$(VERSION)
+@WITH_GCOV_TRUE@COVERAGE_OUTPUT_FILE = $(COVERAGE_NAME)-coverage.info
+@WITH_GCOV_TRUE@COVERAGE_OUTPUT_DIR = $(COVERAGE_NAME)-coverage
+@WITH_GCOV_TRUE@COVERAGE_LCOV_EXTRA_FLAGS =
+@WITH_GCOV_TRUE@COVERAGE_GENHTML_EXTRA_FLAGS =
+@WITH_GCOV_TRUE@coverage_quiet = $(coverage_quiet_$(V))
+@WITH_GCOV_TRUE@coverage_quiet_ = $(coverage_quiet_$(AM_DEFAULT_VERBOSITY))
+@WITH_GCOV_TRUE@coverage_quiet_0 = --quiet
+all: $(BUILT_SOURCES) config.h
+ $(MAKE) $(AM_MAKEFLAGS) all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .cc .lo .log .o .obj .test .test$(EXEEXT) .trs
+am--refresh: Makefile
+ @:
+$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps)
+ @for dep in $?; do \
+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ echo ' cd $(srcdir) && $(AUTOMAKE) --gnu'; \
+ $(am__cd) $(srcdir) && $(AUTOMAKE) --gnu \
+ && exit 0; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --gnu Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ @case '$?' in \
+ *config.status*) \
+ echo ' $(SHELL) ./config.status'; \
+ $(SHELL) ./config.status;; \
+ *) \
+ echo ' cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe)'; \
+ cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe);; \
+ esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+ $(SHELL) ./config.status --recheck
+
+$(top_srcdir)/configure: $(am__configure_deps)
+ $(am__cd) $(srcdir) && $(AUTOCONF)
+$(ACLOCAL_M4): $(am__aclocal_m4_deps)
+ $(am__cd) $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
+$(am__aclocal_m4_deps):
+
+config.h: stamp-h1
+ @test -f $@ || rm -f stamp-h1
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