PCRE_REQCHSET    6462 pcre/pcre_compile.cpp   re->options |= PCRE_REQCHSET;
PCRE_REQCHSET    6484 pcre/pcre_compile.cpp if ((re->options & PCRE_REQCHSET) != 0)
PCRE_REQCHSET    2675 pcre/pcre_dfa_exec.cpp if ((re->options & PCRE_REQCHSET) != 0)
PCRE_REQCHSET    4762 pcre/pcre_exec.cpp if ((re->options & PCRE_REQCHSET) != 0)
PCRE_REQCHSET     128 pcre/pcre_fullinfo.cpp     ((re->options & PCRE_REQCHSET) != 0)? re->req_byte : -1;