[webkit-dev] Enabling Experimental Features

Eric Seidel eric at webkit.org
Mon Apr 22 12:33:40 PDT 2013

FWIW, Blink is going through this right now too.  We're attempting to
move completely away from prefixed development:

To do that, that requires making it possible enable/disable CSS
properties at runtime:

Perhaps this is another opportunity for the two code bases to learn
from one another as we both implement solutions to this.

On Mon, Apr 22, 2013 at 9:32 AM, Simon Fraser <simon.fraser at apple.com> wrote:
> On Apr 20, 2013, at 10:03 AM, Maciej Stachowiak <mjs at apple.com> wrote:
> On Apr 19, 2013, at 3:50 PM, Timothy Hatcher <timothy at apple.com> wrote:
> On Apr 19, 2013, at 6:15 PM, Bear Travis <betravis at adobe.com> wrote:
> What do folks think about adding a mechanism for users to toggle features
> like this on in WebKit nightlies? I don't have a definite approach yet, but
> wanted to float the idea for feedback.
> I like the idea. Having things off for everyone but the engineers is a bad
> approach and misses out on testing.
> We could have WebKit modify Safari's Develop menu to provide additional
> items to toggle. Safari provides an "Enable WebGL" item, we could inject
> more items next to it.
> On Mac, we could at the very last use 'defaults write' to toggle
> experimental runtime-enabled features.
> One problem is that most CSS-exposed experimental features are not
> runtime-switchable. We'd have to do a bunch of work in the parser and style
> resolver to make this possible.
> Simon
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