[Webkit-unassigned] [Bug 236054] Add support for parsing 'subgrid' in grid-template-columns/row

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236054

--- Comment #24 from Matt Woodrow <mattwoodrow at apple.com> ---
(In reply to Manuel Rego Casasnovas from comment #23)
> One more thing, not sure if this is addressed on this patch or it'll happen
> in a follow-up one, but this part from the spec
> (https://drafts.csswg.org/css-grid-2/#subgrid-listing):
> > If there is no parent grid, or if the grid container is otherwised forced to establish an independent formatting context (for example, due to layout containment [CSS-CONTAIN-2]), the used value is the initial value, none, and the grid container is not a subgrid.
> 
> I haven't find a test checking that, maybe I didn't look in the right place,
> or we should add a new test to cover that case.

I'm not sure there is one! There's a test that checks that the computed style is handled correctly for grid's using 'sub grid' without a grid parent, but not when we do have a grid parent, but also contain:layout.

I don't think we can detect that at this point in the patch queue, I can add a test to one of the later patches for it.

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