mirror of https://github.com/tc39/test262.git
33 lines
1.2 KiB
JavaScript
33 lines
1.2 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: If there are no named captures, don't replace $<>
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esid: sec-getsubstitution
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features: [regexp-named-groups]
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info: |
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Runtime Semantics: GetSubstitution( matched, str, position, captures, namedCaptures, replacement )
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Table: Replacement Text Symbol Substitutions
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Unicode Characters: $<
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Replacement text:
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1. If namedCaptures is undefined, the replacement text is the literal string $<.
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---*/
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// @@replace with a string replacement argument (no named captures).
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let source = "(.)(.)|(x)";
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for (let flags of ["", "u"]) {
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let re = new RegExp(source, flags);
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assert.sameValue("$<snd>$<fst>cd", "abcd".replace(re, "$<snd>$<fst>"));
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assert.sameValue("bacd", "abcd".replace(re, "$2$1"));
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assert.sameValue("cd", "abcd".replace(re, "$3"));
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assert.sameValue("$<sndcd", "abcd".replace(re, "$<snd"));
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assert.sameValue("$<sndacd", "abcd".replace(re, "$<snd$1"));
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assert.sameValue("$<42a>cd", "abcd".replace(re, "$<42$1>"));
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assert.sameValue("$<fth>cd", "abcd".replace(re, "$<fth>"));
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assert.sameValue("$<a>cd", "abcd".replace(re, "$<$1>"));
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}
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