- From: Brian Manthos <brianman@microsoft.com>
- Date: Thu, 18 Aug 2011 18:03:37 +0000
- To: "L. David Baron" <dbaron@dbaron.org>, Tab Atkins Jr. <jackalmage@gmail.com>
- CC: Øyvind Stenhaug <oyvinds@opera.com>, Alan Gresley <alan@css-class.com>, "www-style@w3.org" <www-style@w3.org>
If I could find 'initial' as a keyword in a CR+ spec, I would agree with you. In the absence of that, it's a future issue not a present issue. -----Original Message----- From: L. David Baron [mailto:dbaron@dbaron.org] Sent: Thursday, August 18, 2011 10:53 AM To: Tab Atkins Jr. Cc: Brian Manthos; Øyvind Stenhaug; Alan Gresley; www-style@w3.org Subject: Re: Splitting background-position in two different attributes On Thursday 2011-08-18 10:17 -0700, Tab Atkins Jr. wrote: > On Thu, Aug 18, 2011 at 10:00 AM, Brian Manthos <brianman@microsoft.com> wrote: > > Again, an example... > > background: blue; > > is not equivalent to... > > background-color: blue; > > but rather... > > background-attachment: scroll; > > background-clip: border-box; > > background-color: blue; > > background-image: none; > > background-origin: padding-box; > > background-position: 0% 0%; > > background-repeat: repeat; > > background-size: auto; > > Or, somewhat more simply: > > background-attachment: initial; > background-clip: initial; > background-color: blue; > background-image: initial; > background-origin: initial; > background-position: initial; > background-repeat: initial; > background-size: initial; Though depending on the rules for serialization of shorthands, this may be a bad idea. In particular, since inherit and initial can't be used within a shorthand, Gecko follows the rule that if some subproperties of a shorthand are inherit or initial, then in order for the shorthand to serialize as other than "", all must be. This vastly simplifies serialization code (and, if we ever specify it, specification). -David -- 𝄞 L. David Baron http://dbaron.org/ 𝄂 𝄢 Mozilla Corporation http://www.mozilla.com/ 𝄂
Received on Thursday, 18 August 2011 18:04:07 UTC