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Commit62b9a25

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Tests: Disable the ":lang respects escaped backslashes" test
Firefox 114+ no longer match on backslashes in `:lang()`, even when escaped.It is an intentional change as `:lang()` parameters are supposed to be validBCP 47 strings. Therefore, we won't attempt to patch it.We'll keep this test here until other browsers match the behavior.Fixesgh-5271Closesgh-5277Refhttps://bugzilla.mozilla.org/show_bug.cgi?id=1839747#c1Refw3c/csswg-drafts#8720 (comment)
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‎test/unit/selector.js

Lines changed: 13 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1474,7 +1474,7 @@ QUnit.test( "pseudo - :target and :root", function( assert ) {
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});
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QUnit.test("pseudo - :lang",function(assert){
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assert.expect(QUnit.jQuerySelectors ?105 :55);
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assert.expect(QUnit.jQuerySelectors ?104 :54);
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vardocElem=document.documentElement,
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docXmlLang=docElem.getAttribute("xml:lang"),
@@ -1547,8 +1547,18 @@ QUnit.test( "pseudo - :lang", function( assert ) {
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anchor.parentNode.lang="ara";
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anchor.lang="ara\\b";
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assert.deepEqual(jQuery(":lang(ara\\b)",foo).get(),[],":lang respects backslashes");
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assert.deepEqual(jQuery(":lang(ara\\\\b)",foo).get(),[anchor],
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":lang respects escaped backslashes");
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// Support: Firefox 114+
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// Firefox 114+ no longer match on backslashes in `:lang()`, even when escaped.
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// It is an intentional change as `:lang()` parameters are supposed to be valid
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// BCP 47 strings. Therefore, we won't attempt to patch it.
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// We'll keep this test here until other browsers match the behavior.
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// See https://bugzilla.mozilla.org/show_bug.cgi?id=1839747#c1
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// See https://github.com/w3c/csswg-drafts/issues/8720#issuecomment-1509242961
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//
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// assert.deepEqual( jQuery( ":lang(ara\\\\b)", foo ).get(), [ anchor ],
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// ":lang respects escaped backslashes" );
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assert.throws(function(){
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jQuery("#qunit-fixture:lang(c++)");
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},":lang value must be a valid identifier");

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