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Diffstat (limited to 'doc/pcre2posix.3')
| -rw-r--r-- | doc/pcre2posix.3 | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/doc/pcre2posix.3 b/doc/pcre2posix.3 index 833e96c..70a86d8 100644 --- a/doc/pcre2posix.3 +++ b/doc/pcre2posix.3 @@ -1,4 +1,4 @@ -.TH PCRE2POSIX 3 "29 November 2015" "PCRE2 10.21" +.TH PCRE2POSIX 3 "31 January 2016" "PCRE2 10.22" .SH NAME PCRE2 - Perl-compatible regular expressions (revised API) .SH "SYNOPSIS" @@ -28,7 +28,7 @@ expression 8-bit library. See the \fBpcre2api\fP .\" documentation for a description of PCRE2's native API, which contains much -additional functionality. There is no POSIX-style wrapper for PCRE2's 16-bit +additional functionality. There are no POSIX-style wrappers for PCRE2's 16-bit and 32-bit libraries. .P The functions described here are just wrapper functions that ultimately call @@ -44,9 +44,9 @@ value zero. This has no effect, but since programs that are written to the POSIX interface often use it, this makes it easier to slot in PCRE2 as a replacement library. Other POSIX options are not even defined. .P -There are also some other options that are not defined by POSIX. These have -been added at the request of users who want to make use of certain -PCRE2-specific features via the POSIX calling interface. +There are also some options that are not defined by POSIX. These have been +added at the request of users who want to make use of certain PCRE2-specific +features via the POSIX calling interface. .P When PCRE2 is called via these functions, it is only the API that is POSIX-like in style. The syntax and semantics of the regular expressions themselves are @@ -95,11 +95,11 @@ defined POSIX behaviour for REG_NEWLINE (see the following section). .sp REG_NOSUB .sp -The PCRE2_NO_AUTO_CAPTURE option is set when the regular expression is passed -for compilation to the native function. In addition, when a pattern that is -compiled with this flag is passed to \fBregexec()\fP for matching, the -\fInmatch\fP and \fIpmatch\fP arguments are ignored, and no captured strings -are returned. +When a pattern that is compiled with this flag is passed to \fBregexec()\fP for +matching, the \fInmatch\fP and \fIpmatch\fP arguments are ignored, and no +captured strings are returned. Versions of the PCRE library prior to 10.22 used +to set the PCRE2_NO_AUTO_CAPTURE compile option, but this no longer happens +because it disables the use of back references. .sp REG_UCP .sp @@ -216,12 +216,13 @@ mutually exclusive; the error REG_INVARG is returned. .P If the pattern was compiled with the REG_NOSUB flag, no data about any matched strings is returned. The \fInmatch\fP and \fIpmatch\fP arguments of -\fBregexec()\fP are ignored. +\fBregexec()\fP are ignored (except possibly as input for REG_STARTEND). .P -If the value of \fInmatch\fP is zero, or if the value \fIpmatch\fP is NULL, -no data about any matched strings is returned. +The value of \fInmatch\fP may be zero, and the value \fIpmatch\fP may be NULL +(unless REG_STARTEND is set); in both these cases no data about any matched +strings is returned. .P -Otherwise,the portion of the string that was matched, and also any captured +Otherwise, the portion of the string that was matched, and also any captured substrings, are returned via the \fIpmatch\fP argument, which points to an array of \fInmatch\fP structures of type \fIregmatch_t\fP, containing the members \fIrm_so\fP and \fIrm_eo\fP. These contain the byte offset to the first @@ -270,6 +271,6 @@ Cambridge, England. .rs .sp .nf -Last updated: 29 November 2015 -Copyright (c) 1997-2015 University of Cambridge. +Last updated: 31 January 2016 +Copyright (c) 1997-2016 University of Cambridge. .fi |