Re: [csswg-drafts] [css-values] Switch [..]! to ?? combinator

Because it seems logical for "all items are optional but at least one of them must be present", where `?` symbolizes the optionality and `!` the enforcement of at least one. Also, it conforms with what we currently use, i.e. `[ A? B? C? ]!`.

Sebastian

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Received on Monday, 3 April 2017 20:30:05 UTC