[css-properties-values-api] The fact that "foo bar" and "foo | bar" are equivalent syntax is confusing.

[emilio]

In https://drafts.css-houdini.org/css-properties-values-api-1/#consume-syntax-descriptor, | and any other character are treated basically equivalently, so it means that <length> <percentage> is really a syntax for <length> | <percentage>, rather than a <length>, then a <percentage>.

Is this intentional? Is there any reason we're closing the gate to more expressive syntaxes that allow multiple keywords?

[emilio]

cc @andruud

[andruud]

Yes, I just discovered this too. This is a mistake. "foo bar" etc is not supposed to work (and if it did, it certainly shouldn't work like that).