launch URL not working with a # character in the URL string

[Mark E. Powell]

The call

launch URL "http://www.example.com#foo"

brings up a browser window, but with the URL

http://www.example.com%23foo

which yields a File Not Found error.  How do I force Rev not to URLEncode the URL?  It does seem to escape question marks or other delimiters, but does with the hash mark.  

Or in fact is this a browser issue solely?

Thanks in advance

Mark