[Feature Request] Allow rebase to cancel itself when corrupted

[redsigma]

If you were to do a rebase and somehow it fails because of some application that was using the files you were trying to rebase, the rebase gets stuck in a corrupted state.

Doing a git rebase --abort results in the error:

 warning: could not read '.git/rebase-merge/head-name': No such file or directory

I had to do the following operations to fix this:

git reset --hard HEAD

rm -rf .git/rebase-merge/

My question is if it is possible to detect that error and show some popup which the following buttons/options:

• discard all and rebase -> will use that git reset + rm -rf combination
• leave as is -> will use git rebase --quit to exit rebasing and leave things in the current state

[love-linger]

I do not want to run any other commands after running git rebase --abort, instead I've pushed a new commit that cleanup all related files in $GIT_DIR/rebase-merge and $GIT_DIR/rebase-apply after that.

As for whether to execute other commands such as git reset, it shall be decided by the user independently.