[Webkit-unassigned] [Bug 15989] New: XPath queries with predicates incorrectly retains the current node across unions

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=15989

           Summary: XPath queries with predicates incorrectly retains the
                    current node across unions
           Product: WebKit
           Version: 523.x (Safari 3)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: XML
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: khooyp at cs.umd.edu


In the nightlies as well as Safari 3.0.3 on Tiger, XPath queries which contain
unions of queries with predicates (e.g.
"ancestor::xhtml:*[local-name()='span']|.") doesn't quite work right. It seems
that the context-node gets overwritten by each union operand predicate, so
every subsequent operand is applied to the wrong context node.

E.g.:

<div>
    <span id="A">
        <span id="B"/>
    </span>
</div>

The query "ancestor::xhtml:*[local-name()='span']|." from span#B will not
return [span#A, span#B] since the context-node for both operands are span#B. It
will instead return [span#A, div], as if the context-node for the second
operand had been the top-most ancestor.


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