Re: [csswg-drafts] [selectors-4] Clarify :lang() behavior when the language range is not a well-formed BCP 47 code (#8720)

RESOLVED: Any `:lang()` argument or `lang` attribute that cannot be parsed with the BCP-47 syntax causes `:lang()` selectors to not match

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Received on Monday, 30 March 2026 18:43:10 UTC