Sam Atkins 8536e23674 LibWeb/CSS: Parse an ident in :dir(), not a keyword ...

The spec requires us to accept any ident here, not just ltr/rtl, and
also serialize it back out. That means we need to keep the original
string around.

In order to not call keyword_from_string() every time we want to match
a :dir() selector, we still attempt to parse the keyword and keep it
around.

A small behaviour change is that now we'll serialize the ident with its
original casing, instead of always lowercase. Chrome and Firefox
disagree on this, so I think either is fine until that can be
officially decided.

Gets us 2 WPT passes (including 1 from the as-yet-unmerged :dir() test).

2025-05-17 00:30:44 +02:00

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