113 |
default, this is any Unicode newline sequence, for Perl compatibility. However, |
default, this is any Unicode newline sequence, for Perl compatibility. However, |
114 |
this can be changed; see the description of \R in the section entitled |
this can be changed; see the description of \R in the section entitled |
115 |
<a href="#newlineseq">"Newline sequences"</a> |
<a href="#newlineseq">"Newline sequences"</a> |
116 |
below. |
below. A change of \R setting can be combined with a change of newline |
117 |
|
convention. |
118 |
</P> |
</P> |
119 |
<br><a name="SEC3" href="#TOC1">CHARACTERS AND METACHARACTERS</a><br> |
<br><a name="SEC3" href="#TOC1">CHARACTERS AND METACHARACTERS</a><br> |
120 |
<P> |
<P> |
428 |
<P> |
<P> |
429 |
It is possible to restrict \R to match only CR, LF, or CRLF (instead of the |
It is possible to restrict \R to match only CR, LF, or CRLF (instead of the |
430 |
complete set of Unicode line endings) by setting the option PCRE_BSR_ANYCRLF |
complete set of Unicode line endings) by setting the option PCRE_BSR_ANYCRLF |
431 |
either at compile time or when the pattern is matched. This can be made the |
either at compile time or when the pattern is matched. (BSR is an abbrevation |
432 |
default when PCRE is built; if this is the case, the other behaviour can be |
for "backslash R".) This can be made the default when PCRE is built; if this is |
433 |
requested via the PCRE_BSR_UNICODE option. It is also possible to specify these |
the case, the other behaviour can be requested via the PCRE_BSR_UNICODE option. |
434 |
settings by starting a pattern string with one of the following sequences: |
It is also possible to specify these settings by starting a pattern string with |
435 |
|
one of the following sequences: |
436 |
<pre> |
<pre> |
437 |
(*BSR_ANYCRLF) CR, LF, or CRLF only |
(*BSR_ANYCRLF) CR, LF, or CRLF only |
438 |
(*BSR_UNICODE) any Unicode newline sequence |
(*BSR_UNICODE) any Unicode newline sequence |
441 |
they can be overridden by options given to <b>pcre_exec()</b>. Note that these |
they can be overridden by options given to <b>pcre_exec()</b>. Note that these |
442 |
special settings, which are not Perl-compatible, are recognized only at the |
special settings, which are not Perl-compatible, are recognized only at the |
443 |
very start of a pattern, and that they must be in upper case. If more than one |
very start of a pattern, and that they must be in upper case. If more than one |
444 |
of them is present, the last one is used. |
of them is present, the last one is used. They can be combined with a change of |
445 |
</P> |
newline convention, for example, a pattern can start with: |
446 |
<P> |
<pre> |
447 |
|
(*ANY)(*BSR_ANYCRLF) |
448 |
|
</pre> |
449 |
Inside a character class, \R matches the letter "R". |
Inside a character class, \R matches the letter "R". |
450 |
<a name="uniextseq"></a></P> |
<a name="uniextseq"></a></P> |
451 |
<br><b> |
<br><b> |
2189 |
</P> |
</P> |
2190 |
<br><a name="SEC27" href="#TOC1">REVISION</a><br> |
<br><a name="SEC27" href="#TOC1">REVISION</a><br> |
2191 |
<P> |
<P> |
2192 |
Last updated: 11 September 2007 |
Last updated: 14 September 2007 |
2193 |
<br> |
<br> |
2194 |
Copyright © 1997-2007 University of Cambridge. |
Copyright © 1997-2007 University of Cambridge. |
2195 |
<br> |
<br> |