On 4/8/23 05:15, Jonathan Kew wrote:
Looking at the webkit tests, I"m concerned that some of them may conflict with
the spec (as I understand it), and this presumably reflects an issue with
webkit's implementation.
[...]
and BCP47 specifically mentions that
the language tags described in this document are sequences of characters from
the US-ASCII [ISO646 <https://www.rfc-editor.org/rfc/rfc5646#ref-ISO646>]
repertoire
From this, I would conclude that a string containing non-ASCII characters
cannot be a "language tag" per BCP47 at all, and therefore cannot possibly match.
I'm not sure that behavior's wrong, so much as undefined then?
I'm OK with either treating non-ASCII tags as not matching, or passing them
through; but that's probably something to discuss in a CSSWG issue with i18nWG
input.
~fantasai
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