[Webkit-unassigned] [Bug 183544] Discrete animation of content property does not work

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=183544

--- Comment #3 from Antoine Quint <graouts at webkit.org> ---
(In reply to Brandon McConnell from comment #2)
> Is there any update on this?

I am now actively working on this.

> Discrete animation has already been added for
> several CSS properties within WebKit/Safari, while most properties are
> discretely animatable across all other browsers and engines. Can we not
> simply allow all properties to be discretely animatable?

While for a lot of CSS properties it's very simple to add support for discrete animation, the "content" property requires a bit more work. The way most CSS properties are implemented, it's not just a simple switch we can toggle to add support for discrete animations.

> Specifically regarding this CSS property, `content`, this ticket has been
> pending in a "NEW" status since 2018. A prime example of this in action can
> be seen here, in a CodePen which I created over 2 years which appears to
> work across all other non-WebKit browsers:
> 
> CodePen example: https://cdpn.io/e/bZqGdw

Thanks for the example, I have it working with my work-in-progress fix, as well as the pen shared by the original reporter.

However, it seems there is no WPT coverage for this, so I need to add coverage before landing a fix.

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