Re: [GSoC][PATCH v3 2/3] t3600: modernize style

> This test is unusual in that it first cd's into a subdirectory and
> then cd's back out with "cd ..". And, while the use of subshells is
> correct to ensure that all 'cd' commands are undone at the end of the
> test (whether successful or not), the entire construction is
> unnecessarily confusing. This is not the sort of issue which should be
> fixed in this style-fix patch, however, it is something which could be
> cleaned up with a follow-up patch. For instance, the test might be
> reworked like this:
>
>     git init repo &&
>     (
>         cd repo &&
>         echo something >somefile &&
>         git add somefile &&
>         git commit -m "add a file"
>     ) &&
>     git --git-dir=repo/.git --work-tree=repo rm somefile &&
>     test_must_fail git -C repo ls-files --error-unmatch somefile
>
> It's up to you whether you actually want to include such a follow-up
> patch in your series; it's certainly not a requirement.