アラビア語また駄目かorz
どさくさにまぎれて日本語もﾀﾞﾒﾎﾟ→ src/nsfont.m:

if (!strcmp (SDATA (SYMBOL_NAME (lang)), "ja"))
return @"han";
/* NOTE: ja given for any hanzi that's also a kanji, but Chinese fonts
have more characters. */