- From: Nikos Andronikos via GitHub <sysbot+gh@w3.org>
- Date: Wed, 17 Aug 2016 06:14:39 +0000
- To: public-css-archive@w3.org
`<number-optional-number>` is a list with minimum one, and maximum two
items.
Maybe I'm missing something, but those proposed options would allow
more than two wouldn't they?
Expressing comma-wsp is the problematic part, since there's no
equivalent that allows either comma or whitespace.
The clearest equivalent currently seems to be
`<number>{1,2} | <number>#{1,2}`
I think this might be what @fantasai is suggesting, but maybe we could
make a new token for a comma-wsp list? E.g. '&'
This would result in:
`<number>&{1,2}`
This would improve the `<T>+#` grammars we have in SVG, which while
correct, aren't as clear semantically as they could be.
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Received on Wednesday, 17 August 2016 06:14:45 UTC