REG_ECTYPE
case REG_ECTYPE:
(void) REQUIRE(c != '-' && c != ']', REG_ECTYPE);
(void) REQUIRE(EATTWO(':', ']'), REG_ECTYPE);
SETERROR(REG_ECTYPE);
SETERROR(REG_ECTYPE);
RERR(REG_ECTYPE, "invalid character class"),
REG_ECTYPE, "ECTYPE",