Paul Tan <pyoka...@gmail.com> writes:

> When git-am is first run on an unborn branch, no ORIG_HEAD is created.
> As such, any applied commits will remain even after a git am --abort.

I think this answered my question on 4/6; that may indicate that
these two are either done in a wrong order or perhaps should be a
single change.



>
> To be consistent with the behavior of git am --abort when it is not run
> from an unborn branch, we empty the index, and then destroy the branch
> pointed to by HEAD if there is no ORIG_HEAD.
>
> Signed-off-by: Paul Tan <pyoka...@gmail.com>
> ---
>  git-am.sh           |  9 ++++++++-
>  t/t4151-am-abort.sh | 17 +++++++++++++++++
>  2 files changed, 25 insertions(+), 1 deletion(-)
>
> diff --git a/git-am.sh b/git-am.sh
> index e4fe3ed..95f90a0 100755
> --- a/git-am.sh
> +++ b/git-am.sh
> @@ -524,7 +524,14 @@ then
>                       index_tree=$(git write-tree) &&
>                       orig_head=$(git rev-parse --verify -q ORIG_HEAD || echo 
> $empty_tree) &&
>                       git read-tree -m -u $index_tree $orig_head
> -                     git reset ORIG_HEAD
> +                     if git rev-parse --verify -q ORIG_HEAD >/dev/null 2>&1
> +                     then
> +                             git reset ORIG_HEAD
> +                     else
> +                             git read-tree $empty_tree
> +                             curr_branch=$(git symbolic-ref HEAD 
> 2>/dev/null) &&
> +                             git update-ref -d $curr_branch
> +                     fi
>               fi
>               rm -fr "$dotest"
>               exit ;;
> diff --git a/t/t4151-am-abort.sh b/t/t4151-am-abort.sh
> index 2366042..b2a7fc5 100755
> --- a/t/t4151-am-abort.sh
> +++ b/t/t4151-am-abort.sh
> @@ -14,6 +14,7 @@ test_expect_success setup '
>       git add file-1 file-2 &&
>       git commit -m initial &&
>       git tag initial &&
> +     git format-patch --stdout --root initial >initial.patch &&
>       for i in 2 3 4 5 6
>       do
>               echo $i >>file-1 &&
> @@ -125,4 +126,20 @@ test_expect_success 'am -3 --abort removes otherfile-4 
> on unborn branch' '
>       test_path_is_missing otherfile-4
>  '
>  
> +test_expect_success 'am -3 --abort on unborn branch removes applied commits' 
> '
> +     git checkout -f --orphan orphan &&
> +     git reset &&
> +     rm -f otherfile-4 otherfile-2 file-1 file-2 &&
> +     test_must_fail git am -3 initial.patch 0003-*.patch &&
> +     test 3 -eq $(git ls-files -u | wc -l) &&
> +     test 4 = "$(cat otherfile-4)" &&
> +     git am --abort &&
> +     test -z "$(git ls-files -u)" &&
> +     test_path_is_missing otherfile-4 &&
> +     test_path_is_missing file-1 &&
> +     test_path_is_missing file-2 &&
> +     test 0 -eq $(git log --oneline 2>/dev/null | wc -l) &&
> +     test refs/heads/orphan = "$(git symbolic-ref HEAD)"
> +'
> +
>  test_done
--
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