PCRE2_SET_SUBSTITUTE_CALLOUT(3) Library Functions Manual NAME PCRE2 - Perl-compatible regular expressions (revised API) SYNOPSIS #include int pcre2_set_substitute_callout(pcre2_match_context *mcontext, int (*callout_function)(pcre2_substitute_callout_block *), void *callout_data); DESCRIPTION This function sets the substitute 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 10.33 12 November 2018 PCRE2_SET_SUBSTITUTE_CALLOUT(3)