- From: Guillaume via GitHub <noreply@w3.org>
- Date: Sat, 06 Jun 2026 17:10:19 +0000
- To: public-css-archive@w3.org
These [tests](https://github.com/web-platform-tests/wpt/blob/188b6f78fbbbf7bf21f2b77cce3bf94621843b5b/dom/nodes/ParentNode-querySelector-escapes.html) also do not appear to have been updated:
```js
testMatched("\u{2003}", "#\u{2003}");
testMatched("\u{A0}", "#\u{A0}");
testMatched("\u{12345}", "#\u{12345}");
```
But is there any intention to revert the change (f1792dd) for this issue? Because HTML now allows more characters in custom element names (`[a-z][^\0\t\n\f\r\u0020/>]*`):
- https://html.spec.whatwg.org/multipage/custom-elements.html#valid-custom-element-name
- https://github.com/whatwg/html/pull/7991
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Received on Saturday, 6 June 2026 17:10:20 UTC