[lucaspiller]

This is from a couple of weeks ago, there's a few things broken still, but what languages do have full support out of the box?

http://blog.honeybadger.io/ruby-s-unicode-support/

[slobotron]

Perl6 https://perl6advent.wordpress.com/2015/12/07/day-7-unicode-p...

[paulddraper]

Swift

[Immortalin]

Go

[Sean1708]

Doesn't look like Go does: https://github.com/golang/go/issues/14820