Re: [csswg-drafts] [css-cascade][css-transition] Should property aliasing/mapping applies to `transition[-property]`? (#8022)

Well, I don't see https://drafts.csswg.org/css-transitions-1/#transition-property-property saying that idents should be normalized to lowercase (this should probably be filed as another issue). In fact it doesn't seem much consistent:
```js
document.body.style.transitionProperty = "lOreMipsUm, cOloR";
document.body.style.transitionProperty; // Implementations say "lOreMipsUm, color"
```

Note that https://drafts.csswg.org/css-values-4/#identifier-value says

> Such identifiers are fully case-sensitive

And even if `transition-property` interprets custom keywords case-insensitively, I still don't think think `transition-property: word-wrap` becoming `transition-property: overflow-wrap` follows from the text in CSS Cascade.

Otherwise, imagine we add a property `foo` with grammar `bar | word-wrap`. Should `foo: word-wrap` become `foo: overflow-wrap` just because `foo: BaR` becomes `foo: bar`? I don't think so.

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Received on Saturday, 5 November 2022 20:50:33 UTC