prints:
http://foo.org/cgi-bin/bar.cgi?ru=http%3A%2F%2Ffoo.org%2Fcgi-bin%2Fbar
+.cgi%3Fbaz%20%3D%20qu%20ux%3Bfoo%3Ddim

##</code><code>##

http://foo.org/cgi-bin/bar.cgi?ru=http://foo.org/cgi-bin/bar.cgi?baz%20=%20qu%20ux;foo=dim