Problem Statement

This task   (the reverse of   URL encoding   and distinct from   URL parser)   is to provide a function or mechanism to convert an URL-encoded string into its original unencoded form.

Let's start with the solution:

put urlDecode("http%3A%2F%2Ffoo%20bar%2F") & cr & \
    urlDecode("google.com/search?q=%60Abdu%27l-Bah%C3%A1")

http://foo bar/
google.com/search?q=`Abdu'l-Bah√°