submodule--helper: convert "foreach" to its own "--super-prefix"

As with a preceding commit to convert "absorbgitdirs", we can convert
"submodule--helper foreach" to use its own "--super-prefix", instead
of relying on the global "--super-prefix" argument to "git"
itself. See that earlier commit for the rationale and background.

Signed-off-by: Ævar Arnfjörð Bjarmason <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: avar

builtin/submodule--helper.c

@@ -278,6 +278,7 @@ struct foreach_cb {
 	int argc;
 	const char **argv;
 	const char *prefix;
+	const char *super_prefix;
 	int quiet;
 	int recursive;
 };
@@ -294,7 +295,7 @@ static void runcommand_in_submodule_cb(const struct cache_entry *list_item,
 	char *displaypath;
 
 	displaypath = get_submodule_displaypath(path, info->prefix,
-						get_super_prefix());
+						info->super_prefix);
 
 	sub = submodule_from_path(the_repository, null_oid(), path);
 
@@ -364,10 +365,10 @@ static void runcommand_in_submodule_cb(const struct cache_entry *list_item,
 		cpr.dir = path;
 		prepare_submodule_repo_env(&cpr.env);
 
-		strvec_pushl(&cpr.args, "--super-prefix", NULL);
-		strvec_pushf(&cpr.args, "%s/", displaypath);
 		strvec_pushl(&cpr.args, "submodule--helper", "foreach", "--recursive",
 			     NULL);
+		strvec_pushl(&cpr.args, "--super-prefix", NULL);
+		strvec_pushf(&cpr.args, "%s/", displaypath);
 
 		if (info->quiet)
 			strvec_push(&cpr.args, "--quiet");
@@ -391,6 +392,7 @@ static int module_foreach(int argc, const char **argv, const char *prefix)
 	struct pathspec pathspec = { 0 };
 	struct module_list list = MODULE_LIST_INIT;
 	struct option module_foreach_options[] = {
+		OPT__SUPER_PREFIX(&info.super_prefix),
 		OPT__QUIET(&info.quiet, N_("suppress output of entering each submodule command")),
 		OPT_BOOL(0, "recursive", &info.recursive,
 			 N_("recurse into nested submodules")),
@@ -3390,8 +3392,8 @@ int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
 	subcmd = argv[0];
 
 	if (strcmp(subcmd, "clone") && strcmp(subcmd, "update") &&
-	    strcmp(subcmd, "foreach") && strcmp(subcmd, "status") &&
-	    strcmp(subcmd, "sync") && get_super_prefix())
+	    strcmp(subcmd, "status") && strcmp(subcmd, "sync") &&
+	    get_super_prefix())
 		/*
 		 * xstrfmt() rather than "%s %s" to keep the translated
 		 * string identical to git.c's.