As implemented it looks like <expandproperties> expands all properties. I'd really like if I could embed a <propertyset> in it to control which properties get expanded.
Is there a technical reason this won't work? If not, I'll gladly file an enhancement request. By the way this is related to bug 9481 (Add a "prefix" attribute to ExpandProperties filter to allow limiting expansion to certain properties<https://issues.apache.org/bugzilla/show_bug.cgi?id=9481>), though more general. That request is rather old and still unresolved; I'm hoping that doesn't mean it's unresolvable... Rich
