[Bug 20600] [Shadow]: Custom Pseudo-Elements

https://www.w3.org/Bugs/Public/show_bug.cgi?id=20600

--- Comment #6 from Dimitri Glazkov <dglazkov@chromium.org> ---
BTW, I suggested using a function for this early on, but Hyatt was strongly
against it (because WebKit and Gecko already have a de-facto standard using
::foo for matching elements in shadow trees). With that, we need _a_ prefix for
separating author-defined pseudo-elements from those specified in CSS. As Tab
said, "x-" is here just for consistency.

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Received on Wednesday, 9 January 2013 19:17:59 UTC