[csswg-drafts] [css-values-4][css-conditional] Define `<atomic-condition>` that other specs reference (#10790)

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

== [css-values-4][css-conditional] Define `<atomic-condition>` that other specs reference ==
CSS Conditional 5 defines [`<size-feature>`](https://drafts.csswg.org/css-conditional-5/#typedef-size-feature) as the same as `<media-feature>`, and Conditional Values defines [`<atomic-condition>`](https://drafts.csswg.org/css-conditional-values-1/#typedef-atomic-condition) as its own version of `<media-feature>`.

Similarly as `<boolean>` (or possibly `<condition>`) unifies the syntaxes of a "complex" condition, would it be possible to unify `<size-feature>` and `<media-feature>` into `<atomic-condition>`?

Or maybe `<boolean>` should be `<complex-condition>` and `<atomic-condition>` should be `<condition>`, similar to the selector terminology.

```
<condition> = <condition-boolean> | <condition-plain> | <condition-range>
<condition-boolean> = <condition-name> | <condition-constant-keyword>
<condition-name> = <ident>
<condition-plain> = <condition-name> : <condition-value>
<condition-range> = <condition-name> <comparison-operator> <numeric-value>
                  | <numeric-value> <comparison-operator> <condition-name>
                  | <numeric-value> <comparison-lt> <condition-name> <comparison-lt> <numeric-value>
                  | <numeric-value> <comparison-gt> <condition-name> <comparison-gt> <numeric-value>
<condition-value> = <ident> | <numeric-value>
<numeric-value> = <number> | <dimension> | <percentage> | <ratio>
<comparison-lt> = '<' '='?
<comparison-gt> = '>' '='?
<comparison-eq> = '='
<comparison-operator> = <comparison-lt> | <comparison-gt> | <comparison-eq>
```

With the following requirements:

  - each specification must define the set of valid `<condition-name>` when using this production
  - `<condition-value>` must be a valid value according to `<condition-name>`
  - whitespaces are invalid between any component value of `<comparison-operator>`

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/10790 using your GitHub account


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Received on Tuesday, 27 August 2024 12:25:07 UTC