Forbid @ as a username character

[slomo]

Because the frontend uses the @ to check if email address or username has been given to the unified login dialog, the creation of users using @ as name should be denied, otherwise they can't login.

[joka]

Instead of restricting characters a more sophisticated email detection would be nicer.

[joka]

Also the backend instead of the frontend would be the better place to handle issues like "is this an email or login name"

[slomo]

I think if usernames are free text the most sophisticated email detection might not be able to tell apart user names from emails 😄, and on the other hand propper email detection is rally hard.

I agree with your second remark.

[joka]

I think if usernames are free text the most sophisticated email detection might not be able to tell apart user names from emails 😄, and on the other hand proper email detection is rally hard.

for perfect detection, True

[der-john]

Doesn't seem to bother anyone.