Testcase 6 : xhtml() causes renderer to hang

When I call ``do text from xhtml(HTML)`` with the following HTML code:

<div class="section" id="titel">
<h1>Title</h1>
<div class="system-message">
<p class="system-message-title">System Message: WARNING/2 (<tt class="docutils">&lt;string&gt;</tt>, line 2)</p>
<p>Title underline too short.</p>
<pre class="literal-block">
Title
====
</pre>
</div>
</div>

then appy.pod enters into an endless loop in xhtml2odt.py (HtmlElement.getConflictualElements()):

                    while visitParents:
                        try:
                            nextParent = env.currentElements[-i]
                            print nextParent # I added this line to make the endless loop visible
                            res.insert(0, nextParent.setConflictual())
                            if nextParent.elemType == 'para':
                                visitParents = False
                        except IndexError:
                            visitParents = False

I guess this is a bug...
You may use the files at
http://code.google.com/p/lino/source/browse/#hg%2Ftests%2Fappy%2F1
to reproduce this (though I didn't check whether the test.py works without Lino installed).

Luc