Currently Ant's xslt task can use an XML catalog only for file/url look-ups within the transformation. The initial stylesheet must be specified as a file, using the "style" attribute or element. I also do XSL transformations using Saxon via Ant's Java task. Saxon can accept the stylesheet as a URL, and use the catalog to look-up the actual file. My request is that Ant's xslt task be modified so that it too can accept the initial stylesheet parameter as a URL and look it up using the catalog.
would you like to create a patch for this bug report ?