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add PIRegularExpression

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Пелипенко Иван
2025-08-11 14:23:29 +03:00
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<html>
<head>
<title>pcre2_set_compile_extra_options specification</title>
</head>
<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
<h1>pcre2_set_compile_extra_options man page</h1>
<p>
Return to the <a href="index.html">PCRE2 index page</a>.
</p>
<p>
This page is part of the PCRE2 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>
<br><b>
SYNOPSIS
</b><br>
<P>
<b>#include &#60;pcre2.h&#62;</b>
</P>
<P>
<b>int pcre2_set_compile_extra_options(pcre2_compile_context *<i>ccontext</i>,</b>
<b> uint32_t <i>extra_options</i>);</b>
</P>
<br><b>
DESCRIPTION
</b><br>
<P>
This function sets additional option bits for <b>pcre2_compile()</b> that are
housed in a compile context. It completely replaces all the bits. The extra
options are:
<pre>
PCRE2_EXTRA_ALLOW_LOOKAROUND_BSK Allow \K in lookarounds
PCRE2_EXTRA_ALLOW_SURROGATE_ESCAPES Allow \x{d800} to \x{dfff} in UTF-8 and UTF-32 modes
PCRE2_EXTRA_ALT_BSUX Extended alternate \u, \U, and \x handling
PCRE2_EXTRA_ASCII_BSD \d remains ASCII in UCP mode
PCRE2_EXTRA_ASCII_BSS \s remains ASCII in UCP mode
PCRE2_EXTRA_ASCII_BSW \w remains ASCII in UCP mode
PCRE2_EXTRA_ASCII_DIGIT [:digit:] and [:xdigit:] POSIX classes remain ASCII in UCP mode
PCRE2_EXTRA_ASCII_POSIX POSIX classes remain ASCII in UCP mode
PCRE2_EXTRA_BAD_ESCAPE_IS_LITERAL Treat all invalid escapes as a literal following character
PCRE2_EXTRA_CASELESS_RESTRICT Disable mixed ASCII/non-ASCII case folding
PCRE2_EXTRA_ESCAPED_CR_IS_LF Interpret \r as \n
PCRE2_EXTRA_MATCH_LINE Pattern matches whole lines
PCRE2_EXTRA_MATCH_WORD Pattern matches "words"
PCRE2_EXTRA_NEVER_CALLOUT Disallow callouts in pattern
PCRE2_EXTRA_NO_BS0 Disallow \0 (but not \00 or \000)
PCRE2_EXTRA_PYTHON_OCTAL Use Python rules for octal
PCRE2_EXTRA_TURKISH_CASING Use Turkish I case folding
</pre>
There is a complete description of the PCRE2 native API in the
<a href="pcre2api.html"><b>pcre2api</b></a>
page and a description of the POSIX API in the
<a href="pcre2posix.html"><b>pcre2posix</b></a>
page.
<p>
Return to the <a href="index.html">PCRE2 index page</a>.
</p>