The idea is to let non-english speakers edit programs in their own language, while still saving the file in the actual (English-based) programming language. Language-specific keywords, such as "if", would be translated on-screen, but stay English on-disk. 

Variable and function names that clashed with keywords on either side could be escaped by some simple (alpha-only) convention on the other side. For instance, if someone Danish wanted to name a variable "else" after their mother not realizing that "else" is a keyword in English, the variable could be saved to disk as dans_else; while an on-disk variable named "si" would show on a Spanish user's screen as "engl_si". 

This would be a great boon, particularly to educators in other languages - rudimentary if-then-else English can be a job requirement for pro programmers, but not so much for elementary and middle school pre-programming classes.

Obviously, existing codebase would not be translated - just the basic keywords of the language. A right-click facility could show the original keyword in case you needed to search documentation or whatever.

This feature request is pretty big, operationally, though it's not bigger than many existing features; but conceptually, it is huge. Big and "paradigm-shifting" enough to possibly warrant even including it in a special, renamed version of BlueFish (I can think of another famous fish who'd be the other parent of this baby...)

I'm submitting this bug to see if the idea has support. I'm also going to link to this bug from other places to gather support here for this idea. If some current Bluefish developer is interested, I'd be willing to help with the work - but I'm not up to taking the lead.