Re: [PATCH 2/3] When creating branch c/d check that branch c does not already exists.

> With packed refs, there may not be a ".git/refs/heads/c" file
> when branch c exists. And currently in this case, there is no check
> to prevent creation of branch c/d.
>
> This should probably be rewritten in C and done after the ref lock
> has been taken to make sure no race exists though.
>
> This is mainly to make all test cases in "t3210-pack-refs.sh" work.
>
> Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
> ---
>  git-branch.sh |   10 ++++++++++
>  1 files changed, 10 insertions(+), 0 deletions(-)
>
> diff --git a/git-branch.sh b/git-branch.sh
> index 4826c75..4a1e7d9 100755
> --- a/git-branch.sh
> +++ b/git-branch.sh
> @@ -122,6 +122,16 @@ then
>  	done
>  fi
>
> +branchdir=$(dirname $branchname)
> +while test "$branchdir" != "."
> +do
> +	if git-show-ref --verify --quiet -- "refs/heads/$branchdir"
> +	then
> +		die "$branchdir already exists."
> +	fi
> +	branchdir=$(dirname $branchdir)
> +done
> +
>  if git-show-ref --verify --quiet -- "refs/heads/$branchname"
>  then
>  	if test '' = "$force"