Why doesn't ruby ​​know Russian and Ukrainian?

Question

ruby

Why doesn't ruby ​​know Russian and Ukrainian?
Gives the following characters:

How to give him access to the Russian and Ukrainian languages?

Answer 1

1. Make sure you use UTF-8 in your file
2. Make sure your console (or whatever you have here) can use UTF-8
3. Make sure the font has these characters.
Ruby is good at Cyrillic.