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| author | ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069> | 2015-04-13 17:29:05 +0000 |
|---|---|---|
| committer | ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069> | 2015-04-13 17:29:05 +0000 |
| commit | f7b165394f595cce65573950cf3e27c9f027b227 (patch) | |
| tree | dc177e3f10c59870383bcbd39955208d53413b47 /doc/pcre2syntax.3 | |
| parent | 8dee6799eb1696b1f4c5193055c2fb8c70bf7ec5 (diff) | |
| download | pcre2-f7b165394f595cce65573950cf3e27c9f027b227.tar.gz | |
Implement PCRE2_NEVER_BACKSLASH_C.
git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@247 6239d852-aaf2-0410-a92c-79f79f948069
Diffstat (limited to 'doc/pcre2syntax.3')
| -rw-r--r-- | doc/pcre2syntax.3 | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/pcre2syntax.3 b/doc/pcre2syntax.3 index cfc6d0f..10a1584 100644 --- a/doc/pcre2syntax.3 +++ b/doc/pcre2syntax.3 @@ -1,4 +1,4 @@ -.TH PCRE2SYNTAX 3 "15 March 2015" "PCRE2 10.20" +.TH PCRE2SYNTAX 3 "13 April 2015" "PCRE2 10.20" .SH NAME PCRE2 - Perl-compatible regular expressions (revised API) .SH "PCRE2 REGULAR EXPRESSION SYNTAX SUMMARY" @@ -44,7 +44,7 @@ characters "8" and "9". .sp . any character except newline; in dotall mode, any character whatsoever - \eC one data unit, even in UTF mode (best avoided) + \eC one code unit, even in UTF mode (best avoided) \ed a decimal digit \eD a character that is not a decimal digit \eh a horizontal white space character @@ -61,6 +61,10 @@ characters "8" and "9". \eW a "non-word" character \eX a Unicode extended grapheme cluster .sp +The application can lock out the use of \eC by setting the +PCRE2_NEVER_BACKSLASH_C option. It is dangerous because it may leave the +current matching point in the middle of a UTF-8 or UTF-16 character. +.P By default, \ed, \es, and \ew match only ASCII characters, even in UTF-8 mode or in the 16-bit and 32-bit libraries. However, if locale-specific matching is happening, \es and \ew may also match characters with code points in the range @@ -396,7 +400,9 @@ appear. (*UCP) set PCRE2_UCP (use Unicode properties for \ed etc) .sp Note that LIMIT_MATCH and LIMIT_RECURSION can only reduce the value of the -limits set by the caller of pcre2_match(), not increase them. +limits set by the caller of pcre2_match(), not increase them. The application +can lock out the use of (*UTF) and (*UCP) by setting the PCRE2_NEVER_UTF or +PCRE2_NEVER_UCP options, respectively, at compile time. . . .SH "NEWLINE CONVENTION" @@ -543,6 +549,6 @@ Cambridge, England. .rs .sp .nf -Last updated: 15 March 2015 +Last updated: 13 April 2015 Copyright (c) 1997-2015 University of Cambridge. .fi |