I checked the Repo for the scel package and i noticed, that this is a known problem.
There is even a PR which solves this problem, so i copied the PR manually, since it is not merged yet.
This solved the problem.
But i have another question:
- what is the best auto-complete package for emacs and supercollider? normally i use
company, but it does not complete for my variables. what are you using?