[webkit-dev] Following up on removing -khtml- and -apple- CSS vendor prefixes

Ryosuke Niwa rniwa at webkit.org
Thu Apr 5 01:33:25 PDT 2012

On Thu, Apr 5, 2012 at 1:08 AM, Adam Barth <abarth at webkit.org> wrote:

> In July 2010, there was a thread on webkit-dev about removing support
> for the -khtml- and -apple- vendor prefixes:
> https://lists.webkit.org/pipermail/webkit-dev/2010-July/013519.html
> At the time, we tried an approach recommended by David Hyatt
> <https://lists.webkit.org/pipermail/webkit-dev/2010-July/013536.html>,
> but that approach appears to have been too agressive in that it broke
> a number of Dashboard widgets:
> https://bugs.webkit.org/show_bug.cgi?id=42093#c29
> Based on this information, I've posted a patch that limits the -apple-
> and -khtml- vendor prefixes to ENABLE(DASHBOARD_SUPPORT):
> https://bugs.webkit.org/show_bug.cgi?id=83256
> This approach lets ports that wish to remain compatible with Dashboard
> widgets continue to support these prefixes while also letting ports
> that aren't constrained by dashboard widgets disable them, hopefully
> lessening their use on the broader web.

That sounds like a nice middle ground.

It's unfortunate that we have to fragment the WebKit behavior like that but
exposing those two prefixes on the Web seems more harmful.

- Ryosuke
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