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