Re: [csswg-drafts] [selectors-4] Case-insensitive health warning (#13645)

Isn't the name **ASCII case-insensitively** already a strong indication that this folds the ASCII range only? Even before one follows the link and reads:

> To ASCII lowercase a [string](https://infra.spec.whatwg.org/#string), replace all [ASCII upper alphas](https://infra.spec.whatwg.org/#ascii-upper-alpha) in the [string](https://infra.spec.whatwg.org/#string) with their corresponding [code point](https://infra.spec.whatwg.org/#code-point) in [ASCII lower alpha](https://infra.spec.whatwg.org/#ascii-lower-alpha).

and

> An ASCII upper alpha is a [code point](https://infra.spec.whatwg.org/#code-point) in the range U+0041 (A) to U+005A (Z), inclusive.

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Received on Thursday, 12 March 2026 18:51:41 UTC