I was curious fairly recently if programming languages could support keywords in multiple languages. My mental experiment wanted to have translation resource files, mapping keywords or the concepts they represent (if, then, for, while, func, struct, etc) to a localized human language. You could code in your native language, and so could your international fellows - the file is translated in the editor
It got complicated fast. Now you need a canonical representation for disk, something still text, maybe English is the common denominator? Do variable names get translated? Etc
I would like to see it tried, but I’m not brave enough.