[Webkit-unassigned] [Bug 107654] New: Reference combinators do not match anything

Wed Jan 23 03:06:27 PST 2013

https://bugs.webkit.org/show_bug.cgi?id=107654

           Summary: Reference combinators do not match anything
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: a.semenov at unipro.ru

The Shadow DOM specification http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html reads:

"4.4 Matching Children, Distributed To Insertion Points

Reference combinators match the children of a shadow host, distributed to the insertion points within a shadow tree. To match, all of these conditions must apply:

   * The combinator value must be select
   * The first compound selector of the combinator must match an insertion point
   * The second compound selector must match an element, distributed to this insertion point

For example, .some-insertion-point /select/ div.special will match all div elements that have class attribute set to special and have been distributed to an insertion point that has a class attribute set to some-insertion-point."

However the following sample code demonstrates that nothing is matched.

<html>
<head>
<style>
    content /select/ a#link11 { display:none }
</style>
<script>
function test(){

    var host = document.querySelector('#links-wrapper');
    var shadowRoot = host.webkitCreateShadowRoot();

    var content = document.createElement('content');
    content.setAttribute('select', 'a');
    shadowRoot.appendChild(content);
}
</script>
</head>
<body onload='test()'>
    <div id="links-wrapper">
        <a href='#10' id='link10'>Link10: Expected to be visible link</a><br>
        <a href='#11' id='link11'>Link11: Should not be visible</a>
        <p>the paragraph is not assigned to any insertion point</p>
    </div>

</body>
<html>

Observed on Google Chrome version 26.0.1390.0 canary

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