Re: [PATCH 6/8] Make "subtree" part more orthogonal to the rest of merge-recursive.

> diff --git a/merge-recursive.c b/merge-recursive.c
> index 257bf8f..79b45ed 100644
> --- a/merge-recursive.c
> +++ b/merge-recursive.c
> @@ -21,7 +21,8 @@
>  #include "merge-recursive.h"
>  #include "dir.h"
>  
> -static struct tree *shift_tree_object(struct tree *one, struct tree *two)
> +static struct tree *shift_tree_object(struct tree *one, struct tree *two,
> +				      const char *subtree_shift)
>  {
>  	unsigned char shifted[20];
>  
> @@ -29,7 +30,12 @@ static struct tree *shift_tree_object(struct tree *one, struct tree *two)
>  	 * NEEDSWORK: this limits the recursion depth to hardcoded
>  	 * value '2' to avoid excessive overhead.
>  	 */
> -	shift_tree(one->object.sha1, two->object.sha1, shifted, 2);