Version 1.8.1 of xmltask is out now. This version now correctly outputs
DTD declarations and handles XPath expressions returning strings/numbers
etc. e.g. you can now count XML nodes, test for node existence. etc.

Documentation has been updated and enhanced (following many users'
suggestions)

Tested againt Ant 1.5 / 1.6b

See http://www.oopsconsultancy.com/software/xmltask.html

xmltask provides the facility for automatically editing XML files as
part of an Ant build. Unlike the standard filter task provided with Ant,
it is XML-sensitive, but doesn't require you to define XSLTs.