[Jach]

I'm curious, do you speak another language? Anyway, I think the history of programming languages indicates that it wouldn't be all that helpful, simply because nothing's really caught on, despite many opportunities. What does seem useful is being able to have a way of representing non-ascii characters in source code, at least with comments but hopefully with symbols and of course with data, but even in languages that let you trivially define your own names for everything including the basic keywords and standard functions, you don't really see localization attempts or non-English speakers caring. It's more than good enough to just have native-language documentation that explains the concepts behind the English tokens; you need this in English too since it's not like there's always a clear direct correspondence between the English dictionary meaning(s) and the programming language's meaning(s) of the same word/abbreviation.