| // 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-atomescape |
| es6id: 21.2.2.9 |
| description: > |
| Support for surrogate pairs within patterns match by the DecimalEscape |
| AtomEscape |
| info: | |
| The production AtomEscape :: DecimalEscape evaluates as follows: |
| |
| [...] |
| 3. Return an internal Matcher closure that takes two arguments, a State x and |
| a Continuation c, and performs the following steps: |
| [...] |
| h. If there exists an integer i between 0 (inclusive) and len (exclusive) |
| such that Canonicalize(s[i]) is not the same character value as |
| Canonicalize(Input[e+i]), return failure. |
| |
| Runtime Semantics: CharacterSetMatcher Abstract Operation |
| |
| 1. Return an internal Matcher closure that takes two arguments, a State x and |
| a Continuation c, and performs the following steps when evaluated: |
| [...] |
| d. Let cc be Canonicalize(ch). |
| [...] |
| ---*/ |
| |
| assert.sameValue(/(.+).*\1/u.test('\ud800\udc00\ud800'), false); |
