How to specify portuguese alphabet in regexp?

Question

go

Hello. There is a regular season

rxLogin = regexp.MustCompile("^(?:[a-zA-Zа-яА-Я0-9]{1,10})$")

Whatever I did in it to add Portuguese always returns false when using Portuguese.
Thanks in advance

Answer 1

The u modifier doesn't work there? (unicode)
And then the alphabet is something like this:
pt.stackoverflow.com/questions/1700/como-validar-u...

Answer 2

alphabet, not encoding?