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.

PCRE2 10.45                                      14 October 2024              PCRE2_SET_COMPILE_EXTRA_OPTIONS(3)