I think without modification to your XPath, the task is not only difficult, but impossible. I don't see any possibility how plain fooResponse in your XPath expression could match with namespace qualified fooResponse element in your document.

If you want to use XPath and match names regardless namespaces, the name() test is the only solution I can find. The original XPath expressions can be turned to name() variant programmatically (below is my first try). 

sub name_matching_xpath {
    my ($xpath) = @_;

    return join '/',
        map { /^([a-z0-9:-]+)(.*)$/i ? "*[name() = '$1']$2" : $_; } sp
+lit '/',
        $xpath;
}

[download]

In reply to Re^3: XML::LibXML findnodes and namespaces by roman
in thread XML::LibXML findnodes and namespaces by shamu

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