[Webkit-unassigned] [Bug 86746] New: cloneNode doesn't ignore layout errors as much as regular parsing does

Thu May 17 09:14:09 PDT 2012

https://bugs.webkit.org/show_bug.cgi?id=86746

           Summary: cloneNode doesn't ignore layout errors as much as
                    regular parsing does
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Minor
          Priority: P4
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: dtyschenko at gmail.com

Created an attachment (id=142487)
 --> (https://bugs.webkit.org/attachment.cgi?id=142487&action=review)
screenshot

If the page content isn't valid, webkit will tolerantly render document as other engines do, but clonning and appending "invlaid" nodes will result in different (screwed) output. Simple example:

<html>
<body>
<table border="1">
<tr><td width="150px"> </td></tr>
<tr><form><td width="150px"> </td></form></tr>
<tr><td width="150px"> </td></tr>
</table>

<script type="text/javascript">
    document.body.appendChild(
        document.getElementsByTagName("TABLE")[0].cloneNode(true));
</script>

</body>
</html>

See the second row does contain <form> tag, but webkit is able to render the table so the <form> doesn't affect the layout. But this isn't applied to the cloned table and it's screwed.

Tested in Chrome 19.0.1084.46 (webkit 536.5) and Chromium 18.0.1025.168 (535.19)

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