From: Jonathan Müller <jonathanmueller.dev@gmail.com>
Date: Wed, 20 May 2020 10:36:34 GMT
Subject: Bug: git worktree remove and overwritten directory
Message-ID: <89526b3a-297d-591d-6e12-48580d697ed5@gmail.com>

Apologies, if this has already been reported.

It seems to be impossible to remove a git worktree whose location has 
been replaced by the main working tree (don't ask how I found out). 
Steps to reproduce:

```
git init test
cd test
git commit --allow-empty -m"Initial commit"
git branch some-branch
git worktree add ../test2 some-branch
cd ../
rm -rf test2  # Remove the worktree folder
mv test test2 # Main git repository now located where the worktree used 
to be
```

Afterwards, `git worktree list` reports:

/home/foonathan/test2  e7bb748 [master]
/home/foonathan/test2  e7bb748 [some-branch]

And both `git worktree remove .` and `git worktree remove ../test2` 
report an error `fatal: '../test2' is a main working tree`. I had to 
manually remove the corresponding folder from `.git/worktree` to get rid 
of it. The issue is especially annoying, because you can't check out 
`some-branch` anymore (as it's already checked out in the worktree).

I've tested it with git version 2.26.2 and also the version currently on 
the next branch.

Thank you,
Jonathan