- From: Sylvain Galineau <sylvaing@microsoft.com>
- Date: Wed, 8 Sep 2010 00:02:49 +0000
- To: fantasai <fantasai.lists@inkedblade.net>, Doug Schepers <schepers@w3.org>
- CC: Tab Atkins Jr. <jackalmage@gmail.com>, HÃ¥kon Wium Lie <howcome@opera.com>, Chris Lilley <chris@w3.org>, "www-style@w3.org" <www-style@w3.org>, "www-svg@w3.org" <www-svg@w3.org>
> From: www-style-request@w3.org [mailto:www-style-request@w3.org] On > Behalf Of fantasai > On 08/28/2010 05:27 PM, Doug Schepers wrote: > > * For good or ill, it's already allowed in CSS in SVG, so there's > > backwards-compatibility to consider > > I don't recall this claim. I only remember it being allowed in SVG > attribute values, which is a different thing. Are you sure of this? I'm confused too. Afaik, there are two number syntaxes [1]: # <number> # Real numbers are specified in one of two ways. # When used in a stylesheet, a <number> is defined # as follows: # # number ::= integer # | [+-]? [0-9]* "." [0-9]+ # This syntax is the same as the definition in CSS # ([CSS2], section 4.3.1). # # When used in an SVG attribute, a <number> is defined # differently, to allow numbers with large magnitudes to # be specified more concisely: # #number ::= integer ([Ee] integer)? # | [+-]? [0-9]* "." [0-9]+ ([Ee] integer)? But we also have this requirement [2]: # For user agents that support CSS, the presentation attributes # must be translated to corresponding CSS style rules according # to rules described in Precedence of non-CSS presentational hints #... Which implies UAs silently convert e-notation attribute values to CSS numbers. And that authors have to remember that a presentation attribute accepts e notation numbers but the corresponding styling property does not; last, that numeric SVG attribute values may be rejected if used as-is in the CSSOM. So where's the bit allowing e-notation in CSS ? [1] http://www.w3.org/TR/SVG/types.html#BasicDataTypes [2] http://www.w3.org/TR/SVG/styling.html#UsingPresentationAttributes
Received on Wednesday, 8 September 2010 00:03:27 UTC