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PCRE2_SET_CALLOUT(3)  DragonFly Library Functions Manual  PCRE2_SET_CALLOUT(3)

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

SYNOPSIS
       #include <pcre2.h>

       int pcre2_set_callout(pcre2_match_context *mcontext,
         int (*callout_function)(pcre2_callout_block *),
         void *callout_data);

DESCRIPTION
       This function sets the callout fields in a match context (the first
       argument).  The second argument specifies a callout function, and the
       third argument is an opaque data item that is passed to it. The result
       of this function is always zero.

       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 10.30                      21 March 2017            PCRE2_SET_CALLOUT(3)