File name for non-English users

[murinp]

The final file name is strange for non-English user name.

E.g. user "Karolína Mílová" generates file names "karolana-malova_avatar.jpg" rather than "karolina-milova_avatar.jpg".

Wouldn't be better to use something like $user->user_nicename which is already URL sanitized instead of $user->display_name in unique_filename_callback function?

https://github.com/strangerstudios/basic-user-avatars/blob/606d8a681bd1b3e3ed30518a195c1d407b3e422a/init.php#L538