Re: [csswg-drafts] [css-borders-4]: `border-shape` order of shapes in the two-shape variant (#13308)

Like already mentioned elsewhere, CSS already has keywords for [compositing operators](https://drafts.csswg.org/css-masking-1/#typedef-compositing-operator) (which are almost what this is).

~~~~ ebnf
<compositing-operator> = add | subtract | intersect | exclude
~~~~

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Received on Sunday, 1 February 2026 23:07:30 UTC