| // 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); |
