NAME

PCRE2 - Perl-compatible regular expressions (revised API)

SYNOPSIS

#include <pcre2.h>

int pcre2_set_compile_extra_options(pcre2_compile_context *ccontext,
  uint32_t extra_options);

DESCRIPTION

This function sets additional option bits for pcre2_compile() that are housed in a compile context. It completely replaces all the bits. The extra options are:

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

There is a complete description of the PCRE2 native API in the pcre2api page and a description of the POSIX API in the pcre2posix page.