I have a Go server application that processes and saves a user-specified name. I really don’t care what the name is; if they want it to be in hieroglyphs or emojis that’s fine, as long as most clients can display it. Based on this question for C# I was hoping to use

^[^\p{Cc}\p{Cn}\p{Cs}]{1,50}$

basically 1-50 characters that are not control characters, unassigned characters, or partial UTF-16 characters. But Go does not support Cn. Basically I can’t find a reasonable regexp that will match any printable unicode string but not “퟿͸”, for example.

Is there any way to do this other than hard-coding the unassigned unicode ranges into my application and separately checking for those?