[webkit-dev] Removing support for the -khtml- (and -apple-?) vendor prefixes

Peter Beverloo peter at lvp-media.com
Mon Jul 12 10:46:09 PDT 2010

Excuse me, I forgot to note the new bug + patch in my previous mail,
although it was listed in the references.


Peter Beverloo

On Mon, Jul 12, 2010 at 17:26, Eric Seidel <eric at webkit.org> wrote:
> Please post a patch:
> http://webkit.org/coding/contributing.html
> On Mon, Jul 12, 2010 at 8:25 AM, Eric Seidel <eric at webkit.org> wrote:
>> Sounds like an easy patch to post.  I'm in favor of removing this
>> support.  Reducing the number of non-standard CSS properties we
>> support seems like a good thing.
>> -eric
>> On Mon, Jul 12, 2010 at 1:53 AM, Peter Beverloo <peter at lvp-media.com> wrote:
>>> Good day,
>>> While going through WebCore for some CSS research I'm currently doing,
>>> I came across a piece of code[1] which translates all "-khtml-" and
>>> "-apple-" vendor-prefixes to "-webkit-". This effectively means
>>> "-apple-transform" and "-khtml-transform" can both be used instead of
>>> "-webkit-transform". I am unaware of the rationales behind the apple
>>> vendor-prefix, but I'd like to propose removing support for the
>>> KHTML-prefix.
>>> My main argument for this is that WebKit and KHTML are, in my opinion,
>>> two separate engines by two separate vendors. The port occurred eight
>>> years ago, and code in both projects has changed significantly ever
>>> since. When Microsoft announced support for "-webkit-text-size-adjust"
>>> in IE Mobile it was argued that browsers should not implement
>>> properties with prefixes "belonging" to other vendors, which seems to
>>> be exactly what WebKit is doing with the KHTML prefix.
>>> I understand the history of supporting -khtml-, and have heard from
>>> the KHTML project that they implement the -webkit- prefix as well.
>>> However, considering that WebKit has grown significantly in the past
>>> few years and that all code changes basically made KHTML and WebKit
>>> two individual rendering engines, with individual CSS support, I
>>> believe it would be appropriate for support to be dropped.
>>> Regards,
>>> Peter Beverloo
>>> http://peter.sh/
>>> [1] http://trac.webkit.org/browser/trunk/WebCore/css/CSSParser.cpp#L5583
>>> [2] http://blogs.msdn.com/b/iemobile/archive/2010/05/10/javascript-and-css-changes-in-ie-mobile-for-windows-phone-7.aspx
>>> _______________________________________________
>>> webkit-dev mailing list
>>> webkit-dev at lists.webkit.org
>>> http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev

More information about the webkit-dev mailing list