dd8
commented
5 years ago Should xml:lang be allowed as a pass in any test cases?
The current HTML recommendation says:
Authors must not use the lang attribute in the XML namespace on HTML elements in HTML documents.
https://www.w3.org/TR/html52/dom.html#the-lang-and-xmllang-attributes https://html.spec.whatwg.org/multipage/dom.html#the-lang-and-xml:lang-attributes
In XHTML there was a lot of spec churn on this:
XHTML 1.0 Rec
Use both the lang and xml:lang attributes when specifying the language of an element. https://www.w3.org/TR/xhtml1/#C_7
XHTML 1.1 Rec - First Edition
On every element, the lang attribute has been removed in favor of the xml:lang attribute https://www.w3.org/TR/2001/REC-xhtml11-20010531/changes.html#a_changes
XHTML 1.1 Rec - Second Edition
The updated recommendation removed the statement saying the lang attribute has been removed in favor of the xml:lang attribute
https://www.w3.org/TR/xhtml11/changes.html#a_changes
The W3 validator does not flag validation errors for XHTML 1.0 and 1.1 documents with lang but no xml:lang
cptvitamin
WilcoFiers
I think there may be an issue with this test case:
{ "testcaseId": "5f5094197bb84c8f5524f97b9fc5624f18e9dff0", "url": "https://act-rules.github.io/testcases/bf051a/5f5094197bb84c8f5524f97b9fc5624f18e9dff0.html", "expected": "inapplicable", "ruleId": "bf051a", "ruleName": "Validity of HTML Lang attribute", "rulePage": "https://act-rules.github.io/rules/bf051a" }
The test case is:
<html xml:lang=""></html>It's marked as inapplicable, but AFAIK this is a failure. See Failed example #2
What's more confusing is that in Alfa's implementation report, it is marked as inapplicable, and in aXe's it's marked as a pass.