About Friendly urls and Non-Latin characters

I’m not a ruby code writer, but I read the document and find this:

Setting a Hash in <locale>.yml:

i18n:
  transliterate:
    rule:
      ü: "ue"
      ö: "oe"

So this is the way for customize transliterate in setting, at the end of function, we got Latin text (friendly url) only. I tried with my native language, and no need to define custom hash setting.