[Webkit-unassigned] [Bug 156270] New: :indeterminate pseudo-class should match radios whose group has no checked radio

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=156270

            Bug ID: 156270
           Summary: :indeterminate pseudo-class should match radios whose
                    group has no checked radio
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: webkit at chrisrebert.com

Created attachment 275732
  --> https://bugs.webkit.org/attachment.cgi?id=275732&action=review
Screenshot of incorrect rendering in WebKit Nightly

Per the HTML spec, the :indeterminate CSS pseudo-class should match (among other cases) when:
> * <input> elements whose `type` attribute is in the Radio Button state and whose
>       radio button group contains no elements whose checkedness state is true.

But WebKit doesn't currently make :indeterminate match in that case.


Steps to reproduce:
1. Open the testcase in WebKit Nightly.
2. Observe both instances of the word "Green".

Expected result:
Both words should have a green background-color.
(See attached Chrome screenshot.)

Actual result:
Both words have a white background-color.
(See attached WebKit Nightly screenshot.)

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