Re: [PATCH] git-rebase: Teach rebase "-" shorthand.

> Teach rebase the same shorthand as checkout and merge; that is, that "-"
> means "the branch we were previously on".
>
> Reported-by: Tim Chase <git@tim.thechases.com>
> Signed-off-by: Brian Gesiak <modocache@gmail.com>
> ---
>   git-rebase.sh     | 4 ++++
>   t/t3400-rebase.sh | 6 ++++++
>   2 files changed, 10 insertions(+)
>
> diff --git a/git-rebase.sh b/git-rebase.sh
> index 5f6732b..2c75e9f 100755
> --- a/git-rebase.sh
> +++ b/git-rebase.sh
> @@ -453,6 +453,10 @@ then
>   		test "$fork_point" = auto && fork_point=t
>   		;;
>   	*)	upstream_name="$1"
> +		if test "$upstream_name" = "-"
> +		then
> +			upstream_name="@{-1}"
> +		fi
>   		shift
>   		;;
>   	esac
> diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh
> index 6d94b1f..00aba9f 100755
> --- a/t/t3400-rebase.sh
> +++ b/t/t3400-rebase.sh
> @@ -88,6 +88,12 @@ test_expect_success 'rebase from ambiguous branch name' '
>   	git rebase master
>   '
>
> +test_expect_success 'rebase using shorthand' '
> +	git checkout master

> +'
> +
>   test_expect_success 'rebase a single mode change' '
>   	git checkout master &&
>   	git branch -D topic &&
>