[RFC PATCH 4/8] submodule--helper: convert "sync" to its own "--super-prefix"

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

As with a preceding commit to convert "absorbgitdirs", we can convert
"submodule--helper sync" 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 <avarab@gmail.com>
---
 builtin/submodule--helper.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 989c75280af..db58fd5b2c4 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -1214,12 +1214,13 @@ static int module_summary(int argc, const char **argv, const char *prefix)
 
 struct sync_cb {
 	const char *prefix;
+	const char *super_prefix;
 	unsigned int flags;
 };
 #define SYNC_CB_INIT { 0 }
 
 static void sync_submodule(const char *path, const char *prefix,
-			   unsigned int flags)
+			   const char *super_prefix, unsigned int flags)
 {
 	const struct submodule *sub;
 	char *remote_key = NULL;
@@ -1250,7 +1251,7 @@ static void sync_submodule(const char *path, const char *prefix,
 		super_config_url = xstrdup("");
 	}
 
-	displaypath = get_submodule_displaypath(path, prefix);
+	displaypath = get_submodule_displaypath_sp(path, prefix, super_prefix);
 
 	if (!(flags & OPT_QUIET))
 		printf(_("Synchronizing submodule url for '%s'\n"),
@@ -1287,10 +1288,11 @@ static void sync_submodule(const char *path, const char *prefix,
 		cpr.dir = path;
 		prepare_submodule_repo_env(&cpr.env);
 
-		strvec_push(&cpr.args, "--super-prefix");
-		strvec_pushf(&cpr.args, "%s/", displaypath);
 		strvec_pushl(&cpr.args, "submodule--helper", "sync",
 			     "--recursive", NULL);
+		strvec_push(&cpr.args, "--super-prefix");
+		strvec_pushf(&cpr.args, "%s/", displaypath);
+
 
 		if (flags & OPT_QUIET)
 			strvec_push(&cpr.args, "--quiet");
@@ -1313,7 +1315,8 @@ static void sync_submodule_cb(const struct cache_entry *list_item, void *cb_data
 {
 	struct sync_cb *info = cb_data;
 
-	sync_submodule(list_item->name, info->prefix, info->flags);
+	sync_submodule(list_item->name, info->prefix, info->super_prefix,
+		       info->flags);
 }
 
 static int module_sync(int argc, const char **argv, const char *prefix)
@@ -1323,7 +1326,9 @@ static int module_sync(int argc, const char **argv, const char *prefix)
 	struct module_list list = MODULE_LIST_INIT;
 	int quiet = 0;
 	int recursive = 0;
+	const char *super_prefix = NULL;
 	struct option module_sync_options[] = {
+		OPT__SUPER_PREFIX(&super_prefix),
 		OPT__QUIET(&quiet, N_("suppress output of synchronizing submodule url")),
 		OPT_BOOL(0, "recursive", &recursive,
 			N_("recurse into nested submodules")),
@@ -1342,6 +1347,7 @@ static int module_sync(int argc, const char **argv, const char *prefix)
 		goto cleanup;
 
 	info.prefix = prefix;
+	info.super_prefix = super_prefix;
 	if (quiet)
 		info.flags |= OPT_QUIET;
 	if (recursive)
@@ -2890,7 +2896,7 @@ static int module_set_url(int argc, const char **argv, const char *prefix)
 	config_name = xstrfmt("submodule.%s.url", path);
 
 	config_set_in_gitmodules_file_gently(config_name, newurl);
-	sync_submodule(path, prefix, quiet ? OPT_QUIET : 0);
+	sync_submodule(path, prefix, NULL, quiet ? OPT_QUIET : 0);
 
 	free(config_name);
 
@@ -3395,8 +3401,7 @@ int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
 	subcmd = argv[0];
 
 	if (strcmp(subcmd, "clone") && strcmp(subcmd, "update") &&
-	    strcmp(subcmd, "status") && strcmp(subcmd, "sync") &&
-	    get_super_prefix())
+	    strcmp(subcmd, "status") && get_super_prefix())
 		/*
 		 * xstrfmt() rather than "%s %s" to keep the translated
 		 * string identical to git.c's.
-- 
2.38.0.1467.g709fbdff1a9