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assertEquals(String.fromCharCode(97, 220, 256), 'a' + '\u00DC' + '\u0100');
assertEquals(String.fromCharCode(97, 220, 256), 'a\u00DC\u0100');

assertEquals(['a', 'b', '\xdc'], ['b', '\xdc', 'a'].sort());
assertEquals(['\xfc\xdc', '\xfc'], new RegExp('(\xdc)\\1', 'i').exec('\xfc\xdc'));