decode-url doesn't do what I want

[rebolnotes]

I want to transform
hello%20world
into
hello world

like here:
http://www.simplelogic.com/Developer/URLDecode.asp?string=hello%2520world&submit=Clean+Data

but rebol decode-url doesn't seem to do that ?

Thanks.

[Sunanda]

dehex works better in your case:

Code:

dehex "hello%20world"
== "hello world"