RFC 3986 path folding

Hi,

are there any reason that URI.pm's canonical method (which I like a
lot) doesn't implement the ../ and ./ path folding, as described in
RFC 3986?

http://www.example.com/../a/b/../c/./d.html →
http://www.example.com/a/c/d.html

http://en.wikipedia.org/wiki/URL_normalization
http://tools.ietf.org/html/rfc3986

Is it "patches welcome"?

--
Tatsuhiko Miyagawa