> On Jan 12, 2015, at 2:37 PM, Brian Kardell <bkard...@gmail.com> wrote:
> On Mon, Jan 12, 2015 at 5:18 PM, Ryosuke Niwa <rn...@apple.com 
> <mailto:rn...@apple.com>> wrote:
> [snip]
> I agree that having both style isolation and subtree isolation is desirable 
> in some use cases such as Web app widgets.  However, there are other use 
> cases for which style isolation without subtree isolation is desirable in 
> non-App Web documents.
> - R. Niwa
> Can you share such a case? If you're worried about CSS selectors 'bleeding 
> through' how do functional selectors not have precisely the same concerns?  
> I'm not saying it doesn't exist, I'm saying that I am having trouble 
> envisioning it and would like some more information.  It does seem to me that 
> both sorts of isolation naturally 'fall out' of simply having a connector of 
> trees that isn't using parent/child pointers and that most things would "just 
> work" and be easy to explain (as a thing on its own and to use to build up 
> higher features) which is an aspect I am having trouble seeing in nearly all 
> other proposals.  Once again, I'm not saying it's not there, I'm just asking 
> for someone to explain/show me.

Sure, here are some use cases I can think off the top of my head:
Styling a navigation bar which is implemented as a list of hyperlinks
Styling an article in a blog
Styling the comment section in a blog article
Styling a code snippet in a blog article
None of these scenarios require authors to write scripts.

- R. Niwa

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