[whatwg/dom] Define XPath's lang() as ASCII case-insensitive (Issue #1199) from Anne van Kesteren on 2023-05-15 (public-webapps-github@w3.org from May 2023)

From: Anne van Kesteren <notifications@github.com>
Date: Mon, 15 May 2023 02:24:55 -0700
To: whatwg/dom <dom@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <whatwg/dom/issues/1199@github.com>

In https://bugs.webkit.org/show_bug.cgi?id=256716 I was made aware of https://wpt.fyi/results/domxpath/fn-lang.html (added in https://github.com/web-platform-tests/wpt/commit/292d5325052fc889163708143ceaeac557957ed9) where apparently Chromium and Gecko follow the XPath 3.1 definition of `lang()` matching which is not in line with how the web platform matches languages.

I think it would be better if we define this to be ASCII case-insensitive instead.

cc @tkent-google @petervanderbeken

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Received on Monday, 15 May 2023 09:25:01 UTC