| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| description: > |
| Substitution pattern: text before match |
| es6id: 21.2.5.8 |
| info: | |
| 16. Repeat, for each result in results, |
| [...] |
| m. If functionalReplace is true, then |
| [...] |
| n. Else, |
| i. Let replacement be GetSubstitution(matched, S, position, |
| captures, replaceValue). |
| [...] |
| |
| 21.1.3.14.1 Runtime Semantics: GetSubstitution |
| |
| Code units: 0x0024, 0x0060 |
| |
| Unicode Characters: $` |
| |
| Replacement text: |
| If position is 0, the replacement is the empty String. Otherwise the |
| replacement is the substring of str that starts at index 0 and whose last |
| code unit is at index `position-1`. |
| features: [Symbol.replace] |
| ---*/ |
| |
| assert.sameValue(/a/[Symbol.replace]('abc', '[$`]'), '[]bc'); |
| assert.sameValue(/b/[Symbol.replace]('abc', '[$`]'), 'a[a]c'); |
