- From: Chris Lilley via GitHub <sysbot+gh@w3.org>
- Date: Wed, 26 Sep 2018 23:27:13 +0000
- To: public-css-archive@w3.org
svgeesus has just created a new issue for https://github.com/w3c/csswg-drafts:
== [css-variables][css-conditional] allowing a white space only variable value ==
from https://lists.w3.org/Archives/Public/www-style/2013Aug/0520.html by @heycam
> I assume we want:
> @supports (var-a: ) { }
>to succeed, since "var-a: " is a valid declaration. However,
> css-conditional-3 has:
> ```
> supports_declaration_condition
> : '(' S* declaration ')'
> ;
> ```
> with "declaration" linking to CSS 2.1, where it is defined as:
> ```
> declaration : property S* ':' S* value;
> value : [ any | block | ATKEYWORD S* ]+;
> any : [ IDENT | NUMBER | PERCENTAGE | DIMENSION | STRING
> | DELIM | URI | HASH | UNICODE-RANGE | INCLUDES
> | DASHMATCH | ':' | FUNCTION S* [any|unused]* ')'
> | '(' S* [any|unused]* ')' | '[' S* [any|unused]* ']'
> ] S*;
> ```
> This doesn't allow for a property value that consists only of white space.
> On the other hand,
http://dev.w3.org/csswg/css-syntax/#consume-a-declaration seems to allow
a declaration to be parsed that has no tokens at all after the ':'. I
guess that's OK as css-variables then defines that no tokens after the
':' is invalid?
Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/3169 using your GitHub account
Received on Wednesday, 26 September 2018 23:27:14 UTC