[csswg-drafts] [css-mixins-1] Mixins can be called (but not defined) without params (#13015)

andruud has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-mixins-1] Mixins can be called (but not defined) without params ==
It's mildly annoying that you can _invoke_ a mixin without a parameter list (`@apply --m`), but _defining_ a parameter-less mixin requires an explicitly empty list (`@mixin --m()`).

It seem more civilized to either make the parameter list optional on the defining side as well, or require `()` when applying a mixin with no parameters. 

If mixins are indeed going to gain a stronger underlying connection to custom functions (https://github.com/w3c/csswg-drafts/issues/12927), then I'd slightly prefer to just always require `()`, but I'm happy enough as long as we achieve some "symmetry" between `@apply` and `@mixin`.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/13015 using your GitHub account


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Received on Friday, 24 October 2025 15:02:40 UTC