PCRE_ERROR_NOSUBSTRING   76 ext/pcre/pcrelib/pcre_get.c if (top <= 0) return PCRE_ERROR_NOSUBSTRING;
PCRE_ERROR_NOSUBSTRING   93 ext/pcre/pcrelib/pcre_get.c return PCRE_ERROR_NOSUBSTRING;
PCRE_ERROR_NOSUBSTRING  126 ext/pcre/pcrelib/pcre_get.c if (top <= 0) return PCRE_ERROR_NOSUBSTRING;
PCRE_ERROR_NOSUBSTRING  161 ext/pcre/pcrelib/pcre_get.c return PCRE_ERROR_NOSUBSTRING;
PCRE_ERROR_NOSUBSTRING  238 ext/pcre/pcrelib/pcre_get.c   return PCRE_ERROR_NOSUBSTRING;
PCRE_ERROR_NOSUBSTRING  394 ext/pcre/pcrelib/pcre_get.c   return PCRE_ERROR_NOSUBSTRING;