today I accidentally triggered a "fatal" using interactive rebase.
If you edit the instruction sheet after 'rebase -i' and add an unknown
command, Git stops because it doesn't know the command.
That's fine, however, now we are in a state where 'git status' fails with
interactive rebase in progress; onto 311f279
fatal: Could not open file .git/rebase-merge/done for reading: No such
file or directory
After finishing the interactive rebase, things are fixed. Looks like a
special case that isn't handled well, yet.
My Git version is the current 'next' branch.