Re: [PATCH v2 0/4] checkout/reset/read-tree: fix --recurse-submodules in linked worktree

> Changes since v1:
>
>  * revert the addition of a dash in "file1 updated" by correctly using the
>    'tag' argument of test_commit
>  * improve the commit message for the 3rd patch, as suggested by Eric
>  * fix spacing when redirecting into 'expect' and 'actual'
>  * harden the tests by echoing expected values into expect, as suggested by
>    Stolee (I did that in both tests)
>  * remove test_might_fail and use test_expect_code
>  * add the 'git log' test suggested by Stolee
>
> v1: This series fixes the behaviour of git checkout/reset/read-tree
> --recurse-submodules when they are called in a linked worktree (created by 
> git worktree add). 
>
> Although submodules are cloned in $GIT_COMMON_DIR/worktrees/<name>/modules 
> upon issuing git submodule update in the linked worktree, any invocation of 
> git checkout/reset/read-tree --recurse-submodules that changes the state of
> the submodule(s) will incorrectly operate on the repositories of the
> submodules in the main worktree, i.e. the ones at $GIT_COMMON_DIR/modules/. 
>
> The fourth patch fixes this behaviour by using get_git_dir() instead of 
> git_common_dir() in submodule.c::submodule_move_head and 
> submodule.c::submodule_unset_core_worktree to construct the path to the
> submodule repository.
>
> The first 3 patches are clean-up patches on t7410-submodule-checkout-to.sh
> (renamed to t2405-worktree-submodule.sh) to bring it up to date.

> Cc:Max Kirillov max@max630.net [max@max630.net] Brandon Williams 
> bwilliams.eng@gmail.com [bwilliams.eng@gmail.com] Jonathan Tan 
> jonathantanmy@google.com [jonathantanmy@google.com] Stefan Beller 
> stefanbeller@gmail.com [stefanbeller@gmail.com] Nguyễn Thái Ngọc Duy 
> pclouds@gmail.com [pclouds@gmail.com] Eric Sunshine sunshine@sunshineco.com
> [sunshine@sunshineco.com] Derrick Stolee stolee@gmail.com [stolee@gmail.com]