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// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: prod-CharacterEscape
description: >
Null character escape is permitted in Unicode patterns.
info: |
CharacterEscape[U] ::
ControlEscape
c ControlLetter
0 [lookahead ∉ DecimalDigit]
HexEscapeSequence
RegExpUnicodeEscapeSequence[?U]
IdentityEscape[?U]
DecimalDigit :: one of
0 1 2 3 4 5 6 7 8 9
---*/
var nullChar = String.fromCharCode(0);
assert.sameValue(/\0/u.exec(nullChar)[0], nullChar);
assert(/^\0a$/u.test('\0a'));
assert.sameValue('\x00②'.match(/\0②/u)[0], '\x00②');
assert.sameValue('\u0000፬'.search(/\0፬$/u), 0);
reportCompare(0, 0);