Hyphen-minus isn't listed in the username valid character hint but is allowed

[Lin-Buo-Ren (林博仁)]

As the following screenshots(second one in reply)

[Lin-Buo-Ren (林博仁)]

Attach the second screenshot in reply to workaround the new user restriction.

IMO the password hint should contain all valid character ranges.

[codinghorror (Jeff Atwood)]

You are saying password but you mean username.

[Lin-Buo-Ren (林博仁)]

Oops, never noticed that XD, thanks for fixing.

[jomaxro (Joshua Rosenfeld)]

Fixed in:
https://github.com/discourse/discourse/commit/512a7239369fdeb08c439ef5504eb0d62b0eaf40#diff-aeb8651199334c1cb831e884ff85773a

[Lin-Buo-Ren (林博仁)]

Great, thanks a lot!