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List: git
Subject: [Bug report] Git gets stuck in rebase mode
From: LeSeulArtichaut <leseulartichaut () gmail ! com>
Date: 2020-12-30 21:41:44
Message-ID: ECF77241-0631-45D6-8B79-4250EE777A5D () gmail ! com
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What did you do before the bug happened? (Steps to reproduce your issue)
I tried to rebase a branch, say `master`, onto a commit that does not exist in my \
local repository, say `37b52f3b750b11b9ef60db118f737a66af3bf242`: `git rebase master \
37b52f3b750b11b9ef60db118f737a66af3bf242`
- The branch has to be valid (e.g. `git rebase foo \
37b52f3b750b11b9ef60db118f737a66af3bf242` doesn't reproduce the bug)
- The commit SHA has to be a full SHA (e.g. `git rebase master \
37b52f3b750b11b9ef60db118f737a66af3bf2 #42` doesn't reproduce the bug)
Repro "from scratch":
```zsh
mkdir git-bug
cd git-bug
git init
touch foo.txt
git add foo.txt
git commit -m 'Initial commit'
git rebase master 37b52f3b750b11b9ef60db118f737a66af3bf242
```
What did you expect to happen? (Expected behavior)
Git either successfully applies the rebase or gives an error.
What happened instead? (Actual behavior)
```
error: Could not read 37b52f3b750b11b9ef60db118f737a66af3bf242
fatal: Invalid symmetric difference expression \
b91ebd8a08983ed5c27a3946821be02a39f99b3c…37b52f3b750b11b9ef60db118f737a66af3bf242 \
```
Git then instead gets « stuck » in rebase mode (i.e. a `.git/rebase-merge` \
directory exists), with the following visible effects:
- `git status` kind of gets confused:
```bash
$ git status
On branch master
git-rebase-todo is missing.
No commands done.
No commands remaining.
You are currently editing a commit during a rebase.
(use "git commit --amend" to amend the current commit)
(use "git rebase --continue" once you are satisfied with your changes)
nothing to commit, working tree clean
```
- powerlevel10k displays a `rebase-i` state
- `git rebase --continue` and `git rebase --abort` fail:
```bash
$ git rebase --continue
error: could not open '.git/rebase-merge/git-rebase-todo': No such file or directory
$ git rebase --abort
fatal: unable to read tree 37b52f3b750b11b9ef60db118f737a66af3bf242
```
This disappears by deleting the `.git/rebase-merge` directory.
What's different between what you expected and what actually happened?
I didn't expect Git to stay stuck in rebase. After the failure in the `rebase` \
command, the `.git/rebase-merge` directory should be deleted.
[System Info]
git version:
git version 2.30.0
cpu: x86_64
no commit associated with this build
sizeof-long: 8
sizeof-size_t: 8
shell-path: /bin/sh
uname: Darwin 19.6.0 Darwin Kernel Version 19.6.0: Tue Nov 10 00:10:30 PST 2020; \
root:xnu-6153.141.10~1/RELEASE_X86_64 x86_64 compiler info: clang: 12.0.0 \
(clang-1200.0.32.28) libc info: no libc information available
$SHELL (typically, interactive shell): /bin/zsh
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