RECC_UPPER       1565 src/regex-emacs.c     if (!memcmp (beg, "upper", 5))     return RECC_UPPER;
RECC_UPPER       1606 src/regex-emacs.c     case RECC_UPPER: return ISUPPER (ch) != 0;
RECC_UPPER       1632 src/regex-emacs.c     case RECC_UPPER: return BIT_UPPER;