REG_EBRACK
REQUIRE(MORE() && GETNEXT() == ']', REG_EBRACK);
REQUIRE(MORE(), REG_EBRACK);
REQUIRE(MORE(), REG_EBRACK);
REQUIRE(MORE(), REG_EBRACK);
REQUIRE(MORE(), REG_EBRACK);
REQUIRE(MORE(), REG_EBRACK);
SETERROR(REG_EBRACK);
{ REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced" },