Username Character Restrictions

[Glacier150]

Prevent users from adding spaces or other non-desirable characters to their username.

Also add a display warning about how many characters and which characters can be part of a username, so users aren't confused why a message isn't sending.

[mariano-f-r]

Ideally we want the username to have no spaces, correct? We might eventually move to making people sign in so we can store their messages, but that would mean unique nicknames or something like that. I guess what I mean is where do you see this change leading to in the future? @Glacier150

[Glacier150]

Yes, removing spaces in the username I think is good, and also removing all non-ASCII characters from both usernames and messages.