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Re: [css-regions][shadowdom] @region rule and ::distributed() pseudo-element

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Thu, 25 Apr 2013 13:15:04 -0700
Message-ID: <CAAWBYDDkYvRz25n-Bay4o8u95T+kwWf=Ue6oHDkGsXgVyXKZZg@mail.gmail.com>
To: François REMY <francois.remy.dev@outlook.com>
Cc: Daniel Glazman <daniel.glazman@disruptive-innovations.com>, "www-style@w3.org" <www-style@w3.org>
On Thu, Apr 25, 2013 at 9:38 AM, François REMY
<francois.remy.dev@outlook.com> wrote:
>> From: daniel.glazman@disruptive-innovations.com
>> On 17/04/13 23:10, François REMY wrote:
>> >> One drawback to using a functional pseudo-element compared to an @rule is
>> >> more typing. If you have more than one selector argument to pass to the
>> >> function you have to repeat .container::distributed() for each selector.
>> >
>> > The lack of nested rules shouldn't be a reason to introduce more at-rules. Shouldn't selectors and @rules be kept orthogonal?
>>
>> I just don't understand such arguments.
>
> Then, I'll give you an hint. Alan is saying that
>
>   #main-content article::distributed(h1) { ... }
>   #main-content article::distributed(h2) { ... }
>   #main-content article::distributed(h3) { ... }
>
> requires too much typing and that
>
>   @distributed #main-content article {
>      h1 { ... }
>      h2 { ... }
>      h3 { ... }
>   }
>
> could be better. I didn't say he was wrong.
>
>
> I'm just saying that
>
>   #main-content article > h1 { ... }
>   #main-content article > h2 { ... }
>   #main-content article > h3 { ... }
>
> also requires too much typing and that solving this issue is already planned with nested rules and/or macros. I don't see why we would need another mechanism to solve this redundency issue with an at-rule that would only work in one specific case while the solution to a more general problem is already in the works.
>
> Solving the general problem of selector redundency make solving the particular case of ::distributed much less important, according to me. But it's only my opinion, I don't expect anybody to agree on everything I say ;-)

Agreed, though I'm still not sure how to fix it.  I think we'll have
to live with an @nest rule or something like it to kill the inherent
ambiguity.

~TJ
Received on Thursday, 25 April 2013 20:15:51 UTC

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