No. An example of what he is meaning is when symbols like "†" were available to use in characters' names in version 6. Later, the developers disabled those symbols. Essentially, the question being asked is how would someone be able to allow, for instance, Hiragana (A japanese alphabet). Like this: "こねこ". In Romanji: Koneko, meaning Little cat.
So, someone should try checking the files with the letters allowed for the language set and also check the source. Also, make sure when adding these new characters to have a font that could support them, or add multiple fonts or something. If it is just a simple "add to the file" and enjoy, cool
