permitted chars bug?

[eluser]newsun[/eluser]
Okay, so I was working on adding @ chars to the URI characters list and found that if the - is not the last item on the list as below, the - does not work in the URI anymore.

Works:

Code:

$config['permitted_uri_chars'] = 'a-z 0-9~%.:_\@-';

Does not work:

Code:

$config['permitted_uri_chars'] = 'a-z 0-9~%.:_-\@';