- From: Guillaume via GitHub <sysbot+gh@w3.org>
- Date: Tue, 22 Oct 2024 12:24:55 +0000
- To: public-css-archive@w3.org
Matching an optional production with a "concrete" token seems somewhat unusual for a language parser but in hindsight, I think no clarification is needed. `first-valid()` is intentionally defined to accept non-empty arguments, so there is no reason for an author to expect `first-valid({}, valid)` to be valid if it already knows `first-valid(, valid)` is not.
So closing as question answered.
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Received on Tuesday, 22 October 2024 12:24:56 UTC