[Webkit-unassigned] [Bug 69211] Empty URLs in CSS must resolve to an invalid resource

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=69211

Sam Sneddon [:gsnedders] <gsnedders at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
                URL|                            |http://wpt.live/css/css-val
                   |                            |ues/urls/empty.html
                 CC|                            |gsnedders at apple.com,
                   |                            |sabouhallawa at apple.com,
                   |                            |simon.fraser at apple.com
          Component|Page Loading                |CSS
            Summary|HTML document is            |Empty URLs in CSS must
                   |re-requested for empty URL  |resolve to an invalid
                   |in background:url()         |resource
     Ever confirmed|0                           |1

--- Comment #11 from Sam Sneddon [:gsnedders] <gsnedders at apple.com> ---
See https://drafts.csswg.org/css-values-3/#url-empty, with tests at https://github.com/web-platform-tests/wpt/blob/master/css/css-values/urls/empty.html

https://github.com/w3c/csswg-drafts/commit/e0518924c87638861e6b89cc303667b9421cf152 changed the behaviour per spec to "resolve to an invalid resource (similar to what the url about:invalid does)".

Per https://github.com/w3c/csswg-drafts/issues/6447, CSS Values doesn't actually define _what_ the computed value is, though Gecko has implemented this with about:invalid.

https://bugs.chromium.org/p/chromium/issues/detail?id=910954 is the Blink bug for this.

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