My experience with German programming languages is with Siemens PLC's, since the programming language changes together with the IDE when you set the language to German. Looking at Structured Text / Instruction List having U (und) instead of A (and) operator and bunch of other things was interesting.
But IIRC there were also higher programming languages that are in other languages? Wasn't there one for arabic? Was this it: https://github.com/nasser/---/