[mediaqueries] Difference between unknown `<mf-value>` and a feature value not matching

[cdoublev]

Can you please clarify what is the difference between "an unknown <mf-value>" and "a feature value which does not match the value syntax for that media feature", in 3.2 Error Handling?

An unknown <mf-name> or <mf-value>, or a feature value which does not matches the value syntax for that media feature, results in the value “unknown”.

Does feature value designate the specified <mf-value> or the current user environment value?

EDIT: I guess that this sentence makes a difference between matching <ident> in <mf-value>, and matching value in the table definition of the media feature. If so, an unknown <mf-name> or a <mf-value> which does not match the value syntax for that media feature, results in the value “unknown” seems more clear, imo.

[gsnedders]

See #7595.

[cdoublev]

I am sorry for the duplicate. I did not search properly.

#7595 does not touch on the difference between a <mf-value> that is not matching the syntax vs. unknown. Since you made the change on this sentence, can you please confirm that it corresponds to the difference between not matching <ident> (ie. the syntax of <mf-value>, and not matching the syntax defined in the value definition of the corresponding <mf-name>?

[gsnedders]

Ah, sorry, I was quickly looking over this.

#7595 does not touch on the difference between a <mf-value> that is not matching the syntax vs. unknown. Since you made the change on this sentence, can you please confirm that it corresponds to the difference between not matching <ident> (ie. the syntax of <mf-value>, and not matching the syntax defined in the value definition of the corresponding <mf-name>?

Yes. This is part of what makes the whole thing terribly written (and my change was only intended to clarify the above, but without more cross-references it's hard to actually make clear).