[While filing a bug against an older version of the package, I
	don't seem to find anything in the Debian changelog of
	2.7.8.dfsg-2+squeeze1 that'd suggest that any change was made to
	the behavior described below.]

	The xmlSaveUri () function appears to format the URI's with
	:-delimited paths incorrectly, by adding a superfluous // (which
	is simple to resolve, see below), and %-encoding the :'s
	themselves (much harder, I guess), effectively preventing
	urn:-scheme URN's from being used.  (As in: catalogs.)

	Consider the output of the example program (MIME'd):

URI             urn:example:animal:ferret:nose
scheme          urn
opaque          (null)
authority       (null)
server          (null)
user            (null)
port            0
path            example:animal:ferret:nose
query           (null)
fragment        (null)
cleanup         0
query_raw       (null)
xmlSaveUri      urn://example%3Aanimal%3Aferret%3Anose

	Cf. the example in RFC 3986, section 3 [1]: