PCRE2_SET_OPTIMIZE(3)      Library Functions Manual      PCRE2_SET_OPTIMIZE(3)

NAME
       PCRE2 - Perl-compatible regular expressions (revised API)

SYNOPSIS
       #include <pcre2.h>

       int pcre2_set_optimize(pcre2_compile_context *ccontext,
         uint32_t directive);

DESCRIPTION
       This function controls which performance optimizations will be applied
       by pcre2_compile(). It can be called multiple times with the same
       compile context; the effects are cumulative, with the effects of later
       calls taking precedence over earlier ones.

       The result is zero for success, PCRE2_ERROR_NULL if ccontext is NULL,
       or PCRE2_ERROR_BADOPTION if directive is unknown. The latter could be
       useful to detect if a certain optimization is available.

       The list of possible values for the directive parameter are:

         PCRE2_OPTIMIZATION_FULL   Enable all optimizations (default)
         PCRE2_OPTIMIZATION_NONE   Disable all optimizations
         PCRE2_AUTO_POSSESS        Enable auto-possessification
         PCRE2_AUTO_POSSESS_OFF    Disable auto-possessification
         PCRE2_DOTSTAR_ANCHOR      Enable implicit dotstar anchoring
         PCRE2_DOTSTAR_ANCHOR_OFF  Disable implicit dotstar anchoring
         PCRE2_START_OPTIMIZE      Enable start-up optimizations at match time
         PCRE2_START_OPTIMIZE_OFF  Disable start-up optimizations at match
       time

       There is a complete description of the PCRE2 native API, including
       detailed descriptions directive parameter values in the pcre2api page.

PCRE2 10.45                    22 September 2024         PCRE2_SET_OPTIMIZE(3)