allow_zero       1124 ext/pcre/pcrelib/pcre_exec.c     allow_zero = FALSE;
allow_zero       1205 ext/pcre/pcrelib/pcre_exec.c     if (allow_zero || matched_once)
allow_zero       1220 ext/pcre/pcrelib/pcre_exec.c     allow_zero = FALSE;
allow_zero       1264 ext/pcre/pcrelib/pcre_exec.c     if (matched_once || allow_zero)
allow_zero       1901 ext/pcre/pcrelib/pcre_exec.c     allow_zero = TRUE;