unset            6688 ext/pcre/pcrelib/pcre_compile.c       int i, set, unset, namelen;
unset            7554 ext/pcre/pcrelib/pcre_compile.c         set = unset = 0;
unset            7561 ext/pcre/pcrelib/pcre_compile.c             case CHAR_MINUS: optset = &unset; break;
unset            7583 ext/pcre/pcrelib/pcre_compile.c         newoptions = (options | set) & (~unset);