Re: bug: git-stash save and symbolic links

[Jeff King <peff@peff.net>]

On Mon, Oct 20, 2008 at 05:39:31PM +0200, Simon Strandgaard wrote:

>      mkdir test &&
>      echo content >test/file2 &&
>      git add test/file2 &&
>      git commit -m two &&
>    cd .. &&
>      ln -s repo/test linked &&

Ah, OK. You have a symlink into a subdirectory of the repository. Git
correctly finds the repository's .git directory, but then when we
attempt to 'cd' to the top-level of the working tree, we end up outside
of the repository. The culprit is actually "git rev-parse --show-cdup".
This demonstrates it more simply:

  mkdir repo &&
  (cd repo && git init) &&
  mkdir repo/dir &&
  ln -s repo/dir linked &&
  cd linked && git rev-parse --show-cdup

which prints "../". But that's not right; we actually need to go to
"../repo".

I think the right solution in this situation is that we should _not_ be
setting is_inside_work_tree in setup_git_directory_gently, so that we
chdir to its absolute path. But I don't think we ever actually detect
the symlink during this setup, so I'm not sure how best to realize we
are _in_ this situation.

-Peff