[css-syntax-3] - !important diagram forgot to allow whitespaces before "!"

[the-Arioch]

https://www.w3.org/TR/css-syntax-3/#parser-diagrams

Chapter 5.1 - "!important" railroad diagram picture claims there can be no whitespace between property value and "!" character.

But there obviously can be, and actually there almost always exists at least one space.

It would be less counter-intuitive if "ws*" had been omitted all the way around values, including between "!" and "important".
But since "ws*" was inserted in some places but not another - it creates an impression that those places are intentionally different.

[Loirooriol]

But the Component value before !important repeats itself. And a component value can be a preserved token like a a <whitespace-token>.

The ws* between <ident-token> and : can't be omitted since the explanation above doesn't apply, and it's possible to have whitespace there.

[the-Arioch]

Even then, the present page shows that for values other than preserved tokens there is can be no whitespace.

More so the value as properties rules are drawn now can be bypassed altogether, so there would be totally nothing between ":" and "!", not a byte.

Since the "!important" schematics picture already includes "ws*" in all other places but the start, it would be better to make it uniform and to add leading "ws*" too.

The ws* between and : can't be omitted

Well, actually "ommited" whitespace still is valid "ws*" block - that is what asterisk means: "zero or any positive number of".

[Loirooriol]

Even then, the present page shows that for values other than preserved tokens there is can be no whitespace

What's the problem? Is there any place not using ws* or a superset, but which needs to allow whitespace?

so there would be totally nothing between ":" and "!", not a byte.

Yeah, that seems a valid declaration, though then the grammar of most CSS properties will reject that. But --foo:!important should be valid if I understand #774 correctly.

asterisk means: "zero or any positive number of".

I mean that ws* can't be removed from the diagram. When writing CSS you may then use 0 or more spaces.

[the-Arioch]

The situation is not that "zero whitespaces is valid too", the situation is, that schematics suggestes "only zero whitespaces is valid"

That is why "!important" picture better be made uniform and include "ws*" blocks in the beginning too, like it already does in other places. Or, alternatively, totally remove "ws*" form that picture.