[Webkit-unassigned] [Bug 272573] New: Implement case sensitive modifier (s) in attribute selector

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=272573

            Bug ID: 272573
           Summary: Implement case sensitive modifier (s) in attribute
                    selector
           Product: WebKit
           Version: Other
          Hardware: Unspecified
               URL: http://wpt.live/css/selectors/attribute-selectors/attr
                    ibute-case/cssom.html
                OS: Unspecified
            Status: NEW
          Keywords: BrowserCompat, WPTImpact
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: karlcow at apple.com
                CC: koivisto at iki.fi, webkit-bug-importer at group.apple.com

While the case insensitive attribute selector parameter is working such as in ol[type="i" i], 
the case sensitive version is not working such as in:

  ol[type="i" s] {
    list-style-type: lower-alpha;
    background: lime;
  }

This creates for example SyntaxError in the code when using insertRule on a newly created stylesheet.

sheet.insertRule('[foo="bar" s]', 0) will FAIL. 

See 
http://wpt.live/css/selectors/attribute-selectors/attribute-case/cssom.html
http://wpt.fyi/css/selectors/attribute-selectors/attribute-case/cssom.html

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