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This certainly seems needed (though I still haven't properly
read 3986 and 3987, and not sure how IRIs fit in with
everything else).  Perhaps a bit late for 2.5.

-1 on the name: makes it seem the difference between
urlparse and uriparse is something to do with the already
murky distinction between URIs and URLs.  How about rfc3986?
 Prosaic, but hits the nail on the head.

Must read those RFCs and review this...