I ask because sometimes I feel very silly when writing clumsily in English and even sillier when I have to look up how to spell a particular word.
I want to know if I’m the only idiot that it happens to or if on the contrary it’s something generalized.
(Mi idioma es el Español, por cierto)
This actually depends on the kind of project. In larger and longterm projects I write my comments in English. In quick jobs like writing a source code generator or data swabbler that I need once or relatively short term, I use German. It does not make much of a difference for me, though, and I have a script that walks over a source tree to find some common German words just in case I had written something in German by accident.