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Sergei Golubchik 2014-06-05 13:44:44 +02:00
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pcre/doc/pcresyntax.3
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@ -1,4 +1,4 @@
.TH PCRESYNTAX 3 "12 November 2013" "PCRE 8.34"
.TH PCRESYNTAX 3 "08 January 2014" "PCRE 8.35"
.SH NAME
PCRE - Perl-compatible regular expressions
.SH "PCRE REGULAR EXPRESSION SYNTAX SUMMARY"
@ -309,6 +309,8 @@ but some of them use Unicode properties if PCRE_UCP is set. You can use
.rs
.sp
\eK reset start of match
.sp
\eK is honoured in positive assertions, but ignored in negative ones.
.
.
.SH "ALTERNATION"
@ -354,11 +356,13 @@ but some of them use Unicode properties if PCRE_UCP is set. You can use
(?x) extended (ignore white space)
(?-...) unset option(s)
.sp
The following are recognized only at the start of a pattern or after one of the
newline-setting options with similar syntax:
The following are recognized only at the very start of a pattern or after one
of the newline or \eR options with similar syntax. More than one of them may
appear.
.sp
(*LIMIT_MATCH=d) set the match limit to d (decimal number)
(*LIMIT_RECURSION=d) set the recursion limit to d (decimal number)
(*NO_AUTO_POSSESS) no auto-possessification (PCRE_NO_AUTO_POSSESS)
(*NO_START_OPT) no start-match optimization (PCRE_NO_START_OPTIMIZE)
(*UTF8) set UTF-8 mode: 8-bit library (PCRE_UTF8)
(*UTF16) set UTF-16 mode: 16-bit library (PCRE_UTF16)
@ -370,6 +374,29 @@ Note that LIMIT_MATCH and LIMIT_RECURSION can only reduce the value of the
limits set by the caller of pcre_exec(), not increase them.
.
.
.SH "NEWLINE CONVENTION"
.rs
.sp
These are recognized only at the very start of the pattern or after option
settings with a similar syntax.
.sp
(*CR) carriage return only
(*LF) linefeed only
(*CRLF) carriage return followed by linefeed
(*ANYCRLF) all three of the above
(*ANY) any Unicode newline sequence
.
.
.SH "WHAT \eR MATCHES"
.rs
.sp
These are recognized only at the very start of the pattern or after option
setting with a similar syntax.
.sp
(*BSR_ANYCRLF) CR, LF, or CRLF
(*BSR_UNICODE) any Unicode newline sequence
.
.
.SH "LOOKAHEAD AND LOOKBEHIND ASSERTIONS"
.rs
.sp
@ -457,29 +484,6 @@ pattern is not anchored.
(*THEN:NAME) equivalent to (*MARK:NAME)(*THEN)
.
.
.SH "NEWLINE CONVENTIONS"
.rs
.sp
These are recognized only at the very start of the pattern or after a
(*BSR_...), (*UTF8), (*UTF16), (*UTF32) or (*UCP) option.
.sp
(*CR) carriage return only
(*LF) linefeed only
(*CRLF) carriage return followed by linefeed
(*ANYCRLF) all three of the above
(*ANY) any Unicode newline sequence
.
.
.SH "WHAT \eR MATCHES"
.rs
.sp
These are recognized only at the very start of the pattern or after a
(*...) option that sets the newline convention or a UTF or UCP mode.
.sp
(*BSR_ANYCRLF) CR, LF, or CRLF
(*BSR_UNICODE) any Unicode newline sequence
.
.
.SH "CALLOUTS"
.rs
.sp
@ -508,6 +512,6 @@ Cambridge CB2 3QH, England.
.rs
.sp
.nf
Last updated: 12 November 2013
Copyright (c) 1997-2013 University of Cambridge.
Last updated: 08 January 2014
Copyright (c) 1997-2014 University of Cambridge.
.fi