if (typeof parseRegExp === 'undefined') quit(); load(libdir + "regexp_parse.js"); test_mix("\\ca", all_flags, Atom("\u0001")); test_mix("\\cz", all_flags, Atom("\u001a")); test_mix("\\cA", all_flags, Atom("\u0001")); test_mix("\\cZ", all_flags, Atom("\u001a"));