duplicate-names-replace.js (760B)
1 // Copyright 2022 Kevin Gibbons. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 description: String.prototype.replace behavior with duplicate named capture groups 6 esid: prod-GroupSpecifier 7 features: [regexp-duplicate-named-groups] 8 ---*/ 9 10 assert.sameValue("ab".replace(/(?<x>a)|(?<x>b)/, "[$<x>]"), "[a]b"); 11 assert.sameValue("ba".replace(/(?<x>a)|(?<x>b)/, "[$<x>]"), "[b]a"); 12 13 assert.sameValue("ab".replace(/(?<x>a)|(?<x>b)/, "[$<x>][$1][$2]"), "[a][a][]b"); 14 assert.sameValue("ba".replace(/(?<x>a)|(?<x>b)/, "[$<x>][$1][$2]"), "[b][][b]a"); 15 16 assert.sameValue("ab".replace(/(?<x>a)|(?<x>b)/g, "[$<x>]"), "[a][b]"); 17 assert.sameValue("ba".replace(/(?<x>a)|(?<x>b)/g, "[$<x>]"), "[b][a]"); 18 19 reportCompare(0, 0);