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Re: [csswg-drafts] [css-values] Add <number-optional-number> type

From: Tab Atkins Jr. via GitHub <sysbot+gh@w3.org>
Date: Wed, 31 Aug 2016 16:42:17 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-243825038-1472661735-sysbot+gh@w3.org>
CSSWG resolved today to formalize this "list with optional commas" 
pattern with the grammar form `[ <foo>+ ]#`. I'll add a note to V&U's 
definition of CSS grammar that this particular pattern, when used in 
legacy SVG properties, merely has the semantic meaning of "a 
comma-optional list", rather than what it appears to be, "a 
comma-separated list of space-separated lists".

It would be great if SVG could standardize on this grammar form as 

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