Custom authentication (add_filter) – username encoding

Hello,

I used the information on this page (http://ben.lobaugh.net/blog/7175/wordpress-replace-built-in-user-authentication) to install my custom authentication.

It works correctly except if the user has a character with an accent in the username (ie: à, é,…).
I did a few tests and find out that the username passed as argument to the custom authenticate function is not exactly the one I entered in the login form.
For example, if I enter “luciené”, the custom authenticate function receive “luciene” as parameter for username.

WordPress seems to reencode the remove the accent on the characters… Is it possible to change this?

Thank you in advance