[racket] Preventing get-impure-port from url-encoding the query

Evan Donahue wrote at 07/11/2013 04:04 PM:
> I do think, however, that what strikes me as an increasing 
> preponderance of 'creative' url interpretation in the age of SAAS may 
> make a case for greater control over the path/query/fragment portion 
> of the url, whether or not that falls under the official heading of 
> net/'url's.

BTW, I'm about to release an overhauled version of my old "uri" 
library.  It correctly handles the examples I saw in this email thread:

 > (define u1 (string->uri "http://foo.com/?url=http://bar.com?baz=1000"))
 > u1
#uri"http://foo.com/?url=http://bar.com?baz=1000"

 > (define u2 (string->uri 
"http://foo.com/?url=http%3A%2F%2Fbar.com%3Fbaz%3D1000"))
 > u2
#uri"http://foo.com/?url=http%3A%2F%2Fbar.com%3Fbaz%3D1000"

 > (uri-query u1)
(("url" . "http://bar.com?baz=1000"))

 > (uri-query u2)
(("url" . "http://bar.com?baz=1000"))

 > (uri-query "http://foo.com/?url=http%3A%2F%2Fbar.com%3Fbaz%3D1000")
(("url" . "http://bar.com?baz=1000"))

Neil