Parentheses-free pseudo-elements

TL/DR: With the use of Shadow DOM, I start seeing parametric pseudo-elements all over the place. This is great, but if those pseudo-elements use parentheses, they will not compose well with the nested rule proposal that are greatly needed to reduce the overhead those pseudo-elements introduce.

I therefore propose that parentheses around a pseudo-element should not be required if the pseudo-element is last in chain, which I think will be the case for most shadow-dom-related pseudo-elements, as well as region-related ones.

In fact, I'm strongly arguing for the parentheses-free syntax in all cases where it is known beforehand that no other pseudo-element would make sense after the parametric one.



This make it possible to write things like:

    ::distributed figure { ... }
    ::distributed ... ... ...

==

    ::distributed {{
        figure { ... }
        ... ... ...
    }}


and


    #my-region::region figure { ... }
    #my-region::region ... ... ...

==

    #my-region::region {{
        figure { ... }
        ... ... ...        
    }}

(where an isolated {}-island inside a selector triggers in-rule selector nesting)




_____________________________

PS: By the way, did someone beside Tab had a look at the {so-called} ":host(selector) pseudo-class" {previously known as the ":context()" pseudo-class}? It seems really crazy to me and not functionally belonging to the "pseudo-class family". If not, please have a look here:

    https://www.w3.org/Bugs/Public/show_bug.cgi?id=22390

and start a new thread if you feel the same as me

Received on Monday, 15 July 2013 23:17:06 UTC