Typewriter if non-english language will has a unknown character

if i use non-english text on typewriter,it will has unknown chcaracter(X inside 口)
is possible to fix it? i dont know what keyword i should search in this forum

This is because some other language characters are composed of more than one actual character behind the scenes.

Like “:joy:” would be somewhere around 4 characters and if you’re trying to go character by character then you will run into bugs because you’re only adding part of it and it’ll make a letter that doesn’t exist until you have all the parts.

Check this out: