| // Copyright 2017 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| description: > |
| Named groups in Unicode RegExps have some syntax errors and some |
| compatibility escape fallback behavior. |
| esid: prod-GroupSpecifier |
| features: [regexp-named-groups, regexp-lookbehind] |
| includes: [compareArray.js] |
| ---*/ |
| |
| assert(/\k<a>/.test("k<a>")); |
| assert(/\k<4>/.test("k<4>")); |
| assert(/\k<a/.test("k<a")); |
| assert(/\k/.test("k")); |
| |
| assert(/(?<a>\a)/.test("a")); |
| |
| assert(compareArray(["k<a>"], "xxxk<a>xxx".match(/\k<a>/))); |
| assert(compareArray(["k<a"], "xxxk<a>xxx".match(/\k<a/))); |
| |
| // A couple of corner cases around '\k' as named back-references vs. identity |
| // escapes. |
| assert(/\k<a>(?<=>)a/.test("k<a>a")); |
| assert(/\k<a>(?<!a)a/.test("k<a>a")); |
| assert(/\k<a>(<a>x)/.test("k<a><a>x")); |
