Rails - Nov 2005 - International char problem eg ä

I have written a simple web proxy server which is currently choking on
links containing international characters.

Below is a fictitious link which my proxy server might find in a web
page(<IMG src="..."). It contains a &auml; (a with 2 dots) in
the jpg
filename

http://www.qqqq.se/pics/b&auml;r.jpg

If my proxy sever tries to Get the page pointed to by the link then the
result is Page Not Found. If I paste the link into Firefox I again get
Page Not Found

If I change the &auml; to %E4 then it works in firefox (and I assume
Ruby)  eg

http://www.qqqq.se/pics/b%E4r.jpg

So I am looking for a function which converts HTML representations to
Hex in a string

I thought CGI.unencodeHTML might do the trick but it only converts a few
characters (HTML syntax I think) such as &lt; and &gt;

Any ideas?

Peter


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