Re: [PATCH 02/18] Add a new builtin: branch-diff

> This builtin does not do a whole lot so far, apart from showing a usage
> that is oddly similar to that of `git tbdiff`. And for a good reason:
> the next commits will turn `branch-diff` into a full-blown replacement
> for `tbdiff`.
>
> At this point, we ignore tbdiff's color options, as they will all be
> implemented later and require some patches to the diff machinery.
>
> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> ---
> diff --git a/builtin/branch-diff.c b/builtin/branch-diff.c
> @@ -0,0 +1,40 @@
> +static const char * const builtin_branch_diff_usage[] = {
> +       N_("git rebase--helper [<options>] ( A..B C..D | A...B | base A B )"),
> +       NULL
> +};