Re: [csswg-drafts] [css-values] Grammar syntax for defining excluded idents for <custom-ident> productions (#11924)

I think some prefix (!, -, etc.) would be preferable as even if it is not ambiguous, I don't think it is all that clear that it is an exclusion list without one.

For the noisiness problem, depending on how much dynamism people consider appropriate for specs, hiding them by default, with the ability to expand on click might be a good tradeoff.

```
<'property'> = <custom-ident -[ ... ]>
```

... when the [ ... ] is clicked it expands in place

```
<'property'> = <custom-ident -[ none | foo | bar | baz | something-long ]>
```

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Received on Friday, 30 January 2026 18:23:06 UTC