> Also, it would be useful if XSLT 2.0 processor 
> implementations supported fn:document() functions containing 
> URLs starting with zip:/// but I'm not sure which ones do.

Is there a specification for such URIs, and is there class library support?

(Saxon supports jar: URLs despite the fact that (a) there's no public spec,
and (b) the syntax uses "!" in a way that violates the URI specifications.
Sometimes pragmatism carries the day. But I haven't seen zip: URIs in
widespread use.)

Michael Kay
http://www.saxonica.com/