Cyrillic letters are silently cut from username

[SergeyBiryukov]

When installing 3.0-beta1, I entered admin-тест as my username.
The setup went fine, and the last screen showed the username exactly as it was entered.

However after I tried to login, I got “Invalid username” error. When I checked wp_users table it turned out the username was cut to admin-.

If Cyrillic letters in username are still unsupported, perhaps there should be some error message during the installation.

[optimiced]

I agree with "if Cyrillic letters in username are still unsupported, perhaps there should be some error message during the installation".

Or WP should not allow you to create such a username at all [instead of silently deleting Cyrillic characters]?

Perhaps WP should make a check if only Latin letters are used, and if not, then let the user know that only Latin letters should be used for a username, and do not allow to continue unless Cyrillic and/or other characters are inserted into a username field? Then allow to continue with install...

[dd32]

Just taking my name off this ticket.

[nacin]

#13159