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Re: [css-counter-styles][css-fonts] Editorial: syntax of declarations

From: Simon Sapin <simon.sapin@exyr.org>
Date: Sun, 21 Apr 2013 19:42:21 +0200
Message-ID: <517424FD.8090003@exyr.org>
To: "Tab Atkins Jr." <jackalmage@gmail.com>
CC: www-style list <www-style@w3.org>, John Daggett <jdaggett@mozilla.com>
Le 21/04/2013 19:08, Tab Atkins Jr. a écrit :
> On Sun, Apr 21, 2013 at 5:24 AM, Simon Sapin <simon.sapin@exyr.org> wrote:
>> We all know what that means, but the specs should still have a normative
>> definition of the syntax that encodes all the corner cases. The trends seems
>> to be a formal grammar that extends CSS 2.1 §4.1, but "like declarations in
>> style rules" with a normative reference to CSS 2.1 would work for me too.
>> Alternatively, refer to "parse a list of declarations" in Syntax 3, but see
>> http://lists.w3.org/Archives/Public/www-style/2013Apr/0506.html
>> (Based on http://wiki.csswg.org/spec/cssom-constants , this should be
>> everything that uses the declaration syntax. Not counting @page which allows
>> mixed declarations and at-rules. Did I miss anything?)
> We shouldn't be writing explicit grammars for simple cases like this.
> It's long been my intention to write up several helper constructions
> in Syntax, to make grammars more like what Fonts and Counter Styles do
> both easy and precise.
> I haven't been working on Syntax lately, but I'll pick it up again soonish.

Agreed. This is what I mean by "like style rules" and refer to 2.1, or 
refer to Syntax 3.

>> Bonus question: where is !important allowed?
> In most properties, in no descriptors.  ^_^

I’ll go through our modules and check that this is well-defined.

Simon Sapin
Received on Sunday, 21 April 2013 17:42:47 UTC

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