[Webkit-unassigned] [Bug 199170] New: 2nd selector in the compound selector list in :host pseudo-class like ":host(.class1, .class2) .class3" is not supported

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=199170

            Bug ID: 199170
           Summary: 2nd selector in the compound selector list in :host
                    pseudo-class like ":host(.class1, .class2) .class3" is
                    not supported
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: timdream at gmail.com

Created attachment 372778

  --> https://bugs.webkit.org/attachment.cgi?id=372778&action=review

test.html

Summary:
2nd selector in the compond selector list in :host pseudo-class like ":host(.class1, .class2) .class3" is not supported

Steps To Reproduce:
1. Open up test.html
2. Inspect the test.

Results:
The text should be red.

Tested on STP Release 85 (Safari 13.0, WebKit 14608.1.28.1) macOS 10.14.4 (18E226)

Notes:
If I change the selector to |:host(.class2, .class1) .class3| then the text is red, indicating that the selector is supported but not implemented correctly.

===

Firefox doesn’t seem to support this yet (https://bugzilla.mozilla.org/show_bug.cgi?id=1561010) and Chrome can parse this test correctly.

===

Was filed as rdar://52060837

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