Re: [csswg-drafts] [selectors] `:lang` for documents without content language and for elements of unknown language; consider `:lang("")` over `:not(:lang("*"))` (#6915)

`und` is discussed [in RFC 5646](https://www.rfc-editor.org/rfc/rfc5646.html#page-56)

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Received on Wednesday, 12 October 2022 16:23:38 UTC