pcre2/doc/pcre2_set_compile_extra_options.3

.TH PCRE2_SET_COMPILE_EXTRA_OPTIONS 3 "31 August 2021" "PCRE2 10.38"
.SH NAME
PCRE2 - Perl-compatible regular expressions (revised API)
.SH SYNOPSIS
.rs
.sp
.B #include <pcre2.h>
.PP
.nf
.B int pcre2_set_compile_extra_options(pcre2_compile_context *\fIccontext\fP,
.B "  uint32_t \fIextra_options\fP);"
.fi
.
.SH DESCRIPTION
.rs
.sp
This function sets additional option bits for \fBpcre2_compile()\fP that are
housed in a compile context. It completely replaces all the bits. The extra
options are:
.sp
  PCRE2_EXTRA_ALLOW_LOOKAROUND_BSK     Allow \eK in lookarounds
.\" JOIN
  PCRE2_EXTRA_ALLOW_SURROGATE_ESCAPES  Allow \ex{d800} to \ex{dfff}
                                         in UTF-8 and UTF-32 modes
.\" JOIN
  PCRE2_EXTRA_ALT_BSUX                 Extended alternate \eu, \eU, and
                                         \ex handling
.\" JOIN
  PCRE2_EXTRA_BAD_ESCAPE_IS_LITERAL    Treat all invalid escapes as
                                         a literal following character
  PCRE2_EXTRA_ESCAPED_CR_IS_LF         Interpret \er as \en
  PCRE2_EXTRA_MATCH_LINE               Pattern matches whole lines
  PCRE2_EXTRA_MATCH_WORD               Pattern matches "words"
.sp
There is a complete description of the PCRE2 native API in the
.\" HREF
\fBpcre2api\fP
.\"
page and a description of the POSIX API in the
.\" HREF
\fBpcre2posix\fP
.\"
page.