[Double_a_92]

Why can't the merged branch contain commits that don't compile? As long as it has a clean commit message, I don't see the issue. It's just part of the history. On that day you e.g. committed some broken prototype code so your teammate could improve it. So?

If I clean up something I only do it for new commits before they are ever pushed to remote. My rule is basically to never rewrite history, that someone else might already have checked out on their machine.