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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-regular-expressions-patterns
es6id: B.1.4
description: Support for UnicodeIDContinue in IdentityEscape
info: |
IdentityEscape[U] ::
[+U] SyntaxCharacter
[+U] /
[~U] SourceCharacter but not c
---*/
var match;
match = /\C/.exec('ABCDE');
assert.sameValue(match[0], 'C');
match = /O\PQ/.exec('MNOPQRS');
assert.sameValue(match[0], 'OPQ');
match = /\8/.exec('789');
assert.sameValue(match[0], '8');
match = /7\89/.exec('67890');
assert.sameValue(match[0], '789');
match = /\9/.exec('890');
assert.sameValue(match[0], '9');
match = /8\90/.exec('78900');
assert.sameValue(match[0], '890');
match = /(.)(.)(.)(.)(.)(.)(.)(.)\8\8/.exec('0123456777');
assert.sameValue(
match[0],
'0123456777',
'DecimalEscape takes precedence over IdentityEscape (\\8)'
);
match = /(.)(.)(.)(.)(.)(.)(.)(.)(.)\9\9/.exec('01234567888');
assert.sameValue(
match[0],
'01234567888',
'DecimalEscape takes precedence over IdentityEscape (\\9)'
);
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