Re: [PATCH 04/20] submodule--helper: remove unused "list" helper

> Remove the "submodule--helper list" sub-command, which hasn't been
> used by git-submodule.sh since 2964d6e5e1e (submodule: port subcommand
> 'set-branch' from shell to C, 2020-06-02).
>
> There was a test added in 2b56bb7a87a (submodule helper list: respect
> correct path prefix, 2016-02-24) which relied on it, but the right
> thing to do here is to delete that test as well.
>
> That test was regression testing the "list" subcommand itself. We're
> not getting anything useful from the "list | cut -f2" invocation that
> we couldn't get from "foreach 'echo $sm_path'".
>
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
>  builtin/submodule--helper.c | 40 -------------------------------------
>  t/t7400-submodule-basic.sh  | 25 -----------------------
>  2 files changed, 65 deletions(-)
>
> diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
> index ac2553ba9d3..47ed24c6a60 100644
> --- a/builtin/submodule--helper.c
> +++ b/builtin/submodule--helper.c
> @@ -266,45 +266,6 @@ static char *get_up_path(const char *path)
>  	return strbuf_detach(&sb, NULL);
>  }
>  
> -static int module_list(int argc, const char **argv, const char *prefix)
> -{
> -	int i;
> -	struct pathspec pathspec;
> -	struct module_list list = MODULE_LIST_INIT;
> -
> -	struct option module_list_options[] = {
> -		OPT_STRING(0, "prefix", &prefix,
> -			   N_("path"),
> -			   N_("alternative anchor for relative paths")),
> -		OPT_END()
> -	};
> -
> -	const char *const git_submodule_helper_usage[] = {
> -		N_("git submodule--helper list [--prefix=<path>] [<path>...]"),
> -		NULL
> -	};
> -
> -	argc = parse_options(argc, argv, prefix, module_list_options,
> -			     git_submodule_helper_usage, 0);
> -
> -	if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
> -		return 1;
> -
> -	for (i = 0; i < list.nr; i++) {
> -		const struct cache_entry *ce = list.entries[i];
> -
> -		if (ce_stage(ce))
> -			printf("%06o %s U\t", ce->ce_mode,
> -			       oid_to_hex(null_oid()));
> -		else
> -			printf("%06o %s %d\t", ce->ce_mode,
> -			       oid_to_hex(&ce->oid), ce_stage(ce));
> -
> -		fprintf(stdout, "%s\n", ce->name);
> -	}
> -	return 0;
> -}
> -

>  static void for_each_listed_submodule(const struct module_list *list,
>  				      each_submodule_fn fn, void *cb_data)
>  {
> @@ -3340,7 +3301,6 @@ struct cmd_struct {
>  };
>  
>  static struct cmd_struct commands[] = {
> -	{"list", module_list, 0},
>  	{"clone", module_clone, SUPPORT_SUPER_PREFIX},
>  	{"add", module_add, 0},
>  	{"update", module_update, SUPPORT_SUPER_PREFIX},
> diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
> index 6a77d817a82..b50db3f1031 100755
> --- a/t/t7400-submodule-basic.sh
> +++ b/t/t7400-submodule-basic.sh
> @@ -1255,31 +1255,6 @@ test_expect_success 'submodule add clone shallow submodule' '
>  	)
>  '
>  
> -test_expect_success 'submodule helper list is not confused by common prefixes' '
> -	mkdir -p dir1/b &&
> -	(
> -		cd dir1/b &&
> -		git init &&
> -		echo hi >testfile2 &&
> -		git add . &&
> -		git commit -m "test1"
> -	) &&
> -	mkdir -p dir2/b &&
> -	(
> -		cd dir2/b &&
> -		git init &&
> -		echo hello >testfile1 &&
> -		git add .  &&
> -		git commit -m "test2"
> -	) &&
> -	git submodule add /dir1/b dir1/b &&
> -	git submodule add /dir2/b dir2/b &&
> -	git commit -m "first submodule commit" &&
> -	git submodule--helper list dir1/b | cut -f 2 >actual &&
> -	echo "dir1/b" >expect &&
> -	test_cmp expect actual
> -'
> -
>  test_expect_success 'setup superproject with submodules' '
>  	git init sub1 &&
>  	test_commit -C sub1 test &&
> -- 
> 2.37.1.1167.g38fda70d8c4