[Zope] dtml-tree bug?

[Ondrej Palkovsky]

Hi,
I was just testing some things with Zope and came probably across a bug:
This works (I don't want the 'Catalog' to appear in the list):
<dtml-tree branches_expr="objectValues(['Folder'])">
<dtml-var id>
</dtml-tree>

Unfortunately calling this page with '?expand_all=1' causes the thing to
fail on 'KeyError', 'branches'. I tried some hacking but the only result I
got was an always collapsed tree. Is this a known error?

Ondrej
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