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// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Make sure lone surrogates don't match combined surrogates.
assertFalse(/[\ud800-\udfff]+/u.test('\ud801\udc0f'));
// Surrogate pairs split by an "always succeeding" backref shouldn't match
// combined surrogates.
assertFalse(/(\ud801\1\udc0f)/u.test('\ud801\udc0f'));
assertFalse(/(\ud801\1?\udc0f)/u.test('\ud801\udc0f'));
assertFalse(/(\ud801\1{0}\udc0f)/u.test('\ud801\udc0f'));
assertFalse(new RegExp('(\ud801\\1\udc0f)','u').test('\ud801\udc0f'));
assertFalse(new RegExp('(\ud801\\1?\udc0f)','u').test('\ud801\udc0f'));
assertFalse(new RegExp('(\ud801\\1{0}\udc0f)','u').test('\ud801\udc0f'));
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