Steps to reproduce:
- Create a page named Àccénts and insert some content
- Open http://examplewiki.com/wiki/Special:Duplicator?dest=A%C3%A7%C4%89ents&src=%C3%80cc%C3%A9nts (dest = Açĉents, src = Àccénts)
- Attempt to duplicate the page
Actual result:
- An error is given because the URL encoded page name arguments are inserted in the form.
Expected result:
- URL encoded arguments should be decoded prior to being used by the form.