chore(3p/git): Unvendor git and track patches instead r/2903

This was vendored a long time ago under the expectation that keeping
it in sync with cgit would be easier this way, but it has proven not
to be a big issue.

On the other hand, a vendored copy of git is an annoying maintenance
burden. It is much easier to rebase the single (dottime) patch that we
have.

This removes the vendored copy of git and instead passes the git
source code to cgit via `pkgs.srcOnly`, which includes the applied
patch so that cgit can continue rendering dottime.

Change-Id: If31f62dea7ce688fd1b9050204e9378019775f2b

1 files changed, 0 insertions, 2800 deletions

diff --git a/third_party/git/builtin/submodule--helper.c b/third_party/git/builtin/submodule--helper.c
deleted file mode 100644
index c30896c89788..000000000000
--- a/third_party/git/builtin/submodule--helper.c
+++ /dev/null
@@ -1,2800 +0,0 @@
-#define USE_THE_INDEX_COMPATIBILITY_MACROS
-#include "builtin.h"
-#include "repository.h"
-#include "cache.h"
-#include "config.h"
-#include "parse-options.h"
-#include "quote.h"
-#include "pathspec.h"
-#include "dir.h"
-#include "submodule.h"
-#include "submodule-config.h"
-#include "string-list.h"
-#include "run-command.h"
-#include "remote.h"
-#include "refs.h"
-#include "refspec.h"
-#include "connect.h"
-#include "revision.h"
-#include "diffcore.h"
-#include "diff.h"
-#include "object-store.h"
-#include "dir.h"
-#include "advice.h"
-
-#define OPT_QUIET (1 << 0)
-#define OPT_CACHED (1 << 1)
-#define OPT_RECURSIVE (1 << 2)
-#define OPT_FORCE (1 << 3)
-
-typedef void (*each_submodule_fn)(const struct cache_entry *list_item,
-				  void *cb_data);
-
-static char *get_default_remote(void)
-{
-	char *dest = NULL, *ret;
-	struct strbuf sb = STRBUF_INIT;
-	const char *refname = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
-
-	if (!refname)
-		die(_("No such ref: %s"), "HEAD");
-
-	/* detached HEAD */
-	if (!strcmp(refname, "HEAD"))
-		return xstrdup("origin");
-
-	if (!skip_prefix(refname, "refs/heads/", &refname))
-		die(_("Expecting a full ref name, got %s"), refname);
-
-	strbuf_addf(&sb, "branch.%s.remote", refname);
-	if (git_config_get_string(sb.buf, &dest))
-		ret = xstrdup("origin");
-	else
-		ret = dest;
-
-	strbuf_release(&sb);
-	return ret;
-}
-
-static int print_default_remote(int argc, const char **argv, const char *prefix)
-{
-	char *remote;
-
-	if (argc != 1)
-		die(_("submodule--helper print-default-remote takes no arguments"));
-
-	remote = get_default_remote();
-	if (remote)
-		printf("%s\n", remote);
-
-	free(remote);
-	return 0;
-}
-
-static int starts_with_dot_slash(const char *str)
-{
-	return str[0] == '.' && is_dir_sep(str[1]);
-}
-
-static int starts_with_dot_dot_slash(const char *str)
-{
-	return str[0] == '.' && str[1] == '.' && is_dir_sep(str[2]);
-}
-
-/*
- * Returns 1 if it was the last chop before ':'.
- */
-static int chop_last_dir(char **remoteurl, int is_relative)
-{
-	char *rfind = find_last_dir_sep(*remoteurl);
-	if (rfind) {
-		*rfind = '\0';
-		return 0;
-	}
-
-	rfind = strrchr(*remoteurl, ':');
-	if (rfind) {
-		*rfind = '\0';
-		return 1;
-	}
-
-	if (is_relative || !strcmp(".", *remoteurl))
-		die(_("cannot strip one component off url '%s'"),
-			*remoteurl);
-
-	free(*remoteurl);
-	*remoteurl = xstrdup(".");
-	return 0;
-}
-
-/*
- * The `url` argument is the URL that navigates to the submodule origin
- * repo. When relative, this URL is relative to the superproject origin
- * URL repo. The `up_path` argument, if specified, is the relative
- * path that navigates from the submodule working tree to the superproject
- * working tree. Returns the origin URL of the submodule.
- *
- * Return either an absolute URL or filesystem path (if the superproject
- * origin URL is an absolute URL or filesystem path, respectively) or a
- * relative file system path (if the superproject origin URL is a relative
- * file system path).
- *
- * When the output is a relative file system path, the path is either
- * relative to the submodule working tree, if up_path is specified, or to
- * the superproject working tree otherwise.
- *
- * NEEDSWORK: This works incorrectly on the domain and protocol part.
- * remote_url      url              outcome          expectation
- * http://a.com/b  ../c             http://a.com/c   as is
- * http://a.com/b/ ../c             http://a.com/c   same as previous line, but
- *                                                   ignore trailing slash in url
- * http://a.com/b  ../../c          http://c         error out
- * http://a.com/b  ../../../c       http:/c          error out
- * http://a.com/b  ../../../../c    http:c           error out
- * http://a.com/b  ../../../../../c    .:c           error out
- * NEEDSWORK: Given how chop_last_dir() works, this function is broken
- * when a local part has a colon in its path component, too.
- */
-static char *relative_url(const char *remote_url,
-				const char *url,
-				const char *up_path)
-{
-	int is_relative = 0;
-	int colonsep = 0;
-	char *out;
-	char *remoteurl = xstrdup(remote_url);
-	struct strbuf sb = STRBUF_INIT;
-	size_t len = strlen(remoteurl);
-
-	if (is_dir_sep(remoteurl[len-1]))
-		remoteurl[len-1] = '\0';
-
-	if (!url_is_local_not_ssh(remoteurl) || is_absolute_path(remoteurl))
-		is_relative = 0;
-	else {
-		is_relative = 1;
-		/*
-		 * Prepend a './' to ensure all relative
-		 * remoteurls start with './' or '../'
-		 */
-		if (!starts_with_dot_slash(remoteurl) &&
-		    !starts_with_dot_dot_slash(remoteurl)) {
-			strbuf_reset(&sb);
-			strbuf_addf(&sb, "./%s", remoteurl);
-			free(remoteurl);
-			remoteurl = strbuf_detach(&sb, NULL);
-		}
-	}
-	/*
-	 * When the url starts with '../', remove that and the
-	 * last directory in remoteurl.
-	 */
-	while (url) {
-		if (starts_with_dot_dot_slash(url)) {
-			url += 3;
-			colonsep |= chop_last_dir(&remoteurl, is_relative);
-		} else if (starts_with_dot_slash(url))
-			url += 2;
-		else
-			break;
-	}
-	strbuf_reset(&sb);
-	strbuf_addf(&sb, "%s%s%s", remoteurl, colonsep ? ":" : "/", url);
-	if (ends_with(url, "/"))
-		strbuf_setlen(&sb, sb.len - 1);
-	free(remoteurl);
-
-	if (starts_with_dot_slash(sb.buf))
-		out = xstrdup(sb.buf + 2);
-	else
-		out = xstrdup(sb.buf);
-	strbuf_reset(&sb);
-
-	if (!up_path || !is_relative)
-		return out;
-
-	strbuf_addf(&sb, "%s%s", up_path, out);
-	free(out);
-	return strbuf_detach(&sb, NULL);
-}
-
-static int resolve_relative_url(int argc, const char **argv, const char *prefix)
-{
-	char *remoteurl = NULL;
-	char *remote = get_default_remote();
-	const char *up_path = NULL;
-	char *res;
-	const char *url;
-	struct strbuf sb = STRBUF_INIT;
-
-	if (argc != 2 && argc != 3)
-		die("resolve-relative-url only accepts one or two arguments");
-
-	url = argv[1];
-	strbuf_addf(&sb, "remote.%s.url", remote);
-	free(remote);
-
-	if (git_config_get_string(sb.buf, &remoteurl))
-		/* the repository is its own authoritative upstream */
-		remoteurl = xgetcwd();
-
-	if (argc == 3)
-		up_path = argv[2];
-
-	res = relative_url(remoteurl, url, up_path);
-	puts(res);
-	free(res);
-	free(remoteurl);
-	return 0;
-}
-
-static int resolve_relative_url_test(int argc, const char **argv, const char *prefix)
-{
-	char *remoteurl, *res;
-	const char *up_path, *url;
-
-	if (argc != 4)
-		die("resolve-relative-url-test only accepts three arguments: <up_path> <remoteurl> <url>");
-
-	up_path = argv[1];
-	remoteurl = xstrdup(argv[2]);
-	url = argv[3];
-
-	if (!strcmp(up_path, "(null)"))
-		up_path = NULL;
-
-	res = relative_url(remoteurl, url, up_path);
-	puts(res);
-	free(res);
-	free(remoteurl);
-	return 0;
-}
-
-/* the result should be freed by the caller. */
-static char *get_submodule_displaypath(const char *path, const char *prefix)
-{
-	const char *super_prefix = get_super_prefix();
-
-	if (prefix && super_prefix) {
-		BUG("cannot have prefix '%s' and superprefix '%s'",
-		    prefix, super_prefix);
-	} else if (prefix) {
-		struct strbuf sb = STRBUF_INIT;
-		char *displaypath = xstrdup(relative_path(path, prefix, &sb));
-		strbuf_release(&sb);
-		return displaypath;
-	} else if (super_prefix) {
-		return xstrfmt("%s%s", super_prefix, path);
-	} else {
-		return xstrdup(path);
-	}
-}
-
-static char *compute_rev_name(const char *sub_path, const char* object_id)
-{
-	struct strbuf sb = STRBUF_INIT;
-	const char ***d;
-
-	static const char *describe_bare[] = { NULL };
-
-	static const char *describe_tags[] = { "--tags", NULL };
-
-	static const char *describe_contains[] = { "--contains", NULL };
-
-	static const char *describe_all_always[] = { "--all", "--always", NULL };
-
-	static const char **describe_argv[] = { describe_bare, describe_tags,
-						describe_contains,
-						describe_all_always, NULL };
-
-	for (d = describe_argv; *d; d++) {
-		struct child_process cp = CHILD_PROCESS_INIT;
-		prepare_submodule_repo_env(&cp.env_array);
-		cp.dir = sub_path;
-		cp.git_cmd = 1;
-		cp.no_stderr = 1;
-
-		strvec_push(&cp.args, "describe");
-		strvec_pushv(&cp.args, *d);
-		strvec_push(&cp.args, object_id);
-
-		if (!capture_command(&cp, &sb, 0)) {
-			strbuf_strip_suffix(&sb, "\n");
-			return strbuf_detach(&sb, NULL);
-		}
-	}
-
-	strbuf_release(&sb);
-	return NULL;
-}
-
-struct module_list {
-	const struct cache_entry **entries;
-	int alloc, nr;
-};
-#define MODULE_LIST_INIT { NULL, 0, 0 }
-
-static int module_list_compute(int argc, const char **argv,
-			       const char *prefix,
-			       struct pathspec *pathspec,
-			       struct module_list *list)
-{
-	int i, result = 0;
-	char *ps_matched = NULL;
-	parse_pathspec(pathspec, 0,
-		       PATHSPEC_PREFER_FULL,
-		       prefix, argv);
-
-	if (pathspec->nr)
-		ps_matched = xcalloc(pathspec->nr, 1);
-
-	if (read_cache() < 0)
-		die(_("index file corrupt"));
-
-	for (i = 0; i < active_nr; i++) {
-		const struct cache_entry *ce = active_cache[i];
-
-		if (!match_pathspec(&the_index, pathspec, ce->name, ce_namelen(ce),
-				    0, ps_matched, 1) ||
-		    !S_ISGITLINK(ce->ce_mode))
-			continue;
-
-		ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
-		list->entries[list->nr++] = ce;
-		while (i + 1 < active_nr &&
-		       !strcmp(ce->name, active_cache[i + 1]->name))
-			/*
-			 * Skip entries with the same name in different stages
-			 * to make sure an entry is returned only once.
-			 */
-			i++;
-	}
-
-	if (ps_matched && report_path_error(ps_matched, pathspec))
-		result = -1;
-
-	free(ps_matched);
-
-	return result;
-}
-
-static void module_list_active(struct module_list *list)
-{
-	int i;
-	struct module_list active_modules = MODULE_LIST_INIT;
-
-	for (i = 0; i < list->nr; i++) {
-		const struct cache_entry *ce = list->entries[i];
-
-		if (!is_submodule_active(the_repository, ce->name))
-			continue;
-
-		ALLOC_GROW(active_modules.entries,
-			   active_modules.nr + 1,
-			   active_modules.alloc);
-		active_modules.entries[active_modules.nr++] = ce;
-	}
-
-	free(list->entries);
-	*list = active_modules;
-}
-
-static char *get_up_path(const char *path)
-{
-	int i;
-	struct strbuf sb = STRBUF_INIT;
-
-	for (i = count_slashes(path); i; i--)
-		strbuf_addstr(&sb, "../");
-
-	/*
-	 * Check if 'path' ends with slash or not
-	 * for having the same output for dir/sub_dir
-	 * and dir/sub_dir/
-	 */
-	if (!is_dir_sep(path[strlen(path) - 1]))
-		strbuf_addstr(&sb, "../");
-
-	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)
-{
-	int i;
-	for (i = 0; i < list->nr; i++)
-		fn(list->entries[i], cb_data);
-}
-
-struct foreach_cb {
-	int argc;
-	const char **argv;
-	const char *prefix;
-	int quiet;
-	int recursive;
-};
-#define FOREACH_CB_INIT { 0 }
-
-static void runcommand_in_submodule_cb(const struct cache_entry *list_item,
-				       void *cb_data)
-{
-	struct foreach_cb *info = cb_data;
-	const char *path = list_item->name;
-	const struct object_id *ce_oid = &list_item->oid;
-
-	const struct submodule *sub;
-	struct child_process cp = CHILD_PROCESS_INIT;
-	char *displaypath;
-
-	displaypath = get_submodule_displaypath(path, info->prefix);
-
-	sub = submodule_from_path(the_repository, &null_oid, path);
-
-	if (!sub)
-		die(_("No url found for submodule path '%s' in .gitmodules"),
-			displaypath);
-
-	if (!is_submodule_populated_gently(path, NULL))
-		goto cleanup;
-
-	prepare_submodule_repo_env(&cp.env_array);
-
-	/*
-	 * For the purpose of executing <command> in the submodule,
-	 * separate shell is used for the purpose of running the
-	 * child process.
-	 */
-	cp.use_shell = 1;
-	cp.dir = path;
-
-	/*
-	 * NEEDSWORK: the command currently has access to the variables $name,
-	 * $sm_path, $displaypath, $sha1 and $toplevel only when the command
-	 * contains a single argument. This is done for maintaining a faithful
-	 * translation from shell script.
-	 */
-	if (info->argc == 1) {
-		char *toplevel = xgetcwd();
-		struct strbuf sb = STRBUF_INIT;
-
-		strvec_pushf(&cp.env_array, "name=%s", sub->name);
-		strvec_pushf(&cp.env_array, "sm_path=%s", path);
-		strvec_pushf(&cp.env_array, "displaypath=%s", displaypath);
-		strvec_pushf(&cp.env_array, "sha1=%s",
-			     oid_to_hex(ce_oid));
-		strvec_pushf(&cp.env_array, "toplevel=%s", toplevel);
-
-		/*
-		 * Since the path variable was accessible from the script
-		 * before porting, it is also made available after porting.
-		 * The environment variable "PATH" has a very special purpose
-		 * on windows. And since environment variables are
-		 * case-insensitive in windows, it interferes with the
-		 * existing PATH variable. Hence, to avoid that, we expose
-		 * path via the args strvec and not via env_array.
-		 */
-		sq_quote_buf(&sb, path);
-		strvec_pushf(&cp.args, "path=%s; %s",
-			     sb.buf, info->argv[0]);
-		strbuf_release(&sb);
-		free(toplevel);
-	} else {
-		strvec_pushv(&cp.args, info->argv);
-	}
-
-	if (!info->quiet)
-		printf(_("Entering '%s'\n"), displaypath);
-
-	if (info->argv[0] && run_command(&cp))
-		die(_("run_command returned non-zero status for %s\n."),
-			displaypath);
-
-	if (info->recursive) {
-		struct child_process cpr = CHILD_PROCESS_INIT;
-
-		cpr.git_cmd = 1;
-		cpr.dir = path;
-		prepare_submodule_repo_env(&cpr.env_array);
-
-		strvec_pushl(&cpr.args, "--super-prefix", NULL);
-		strvec_pushf(&cpr.args, "%s/", displaypath);
-		strvec_pushl(&cpr.args, "submodule--helper", "foreach", "--recursive",
-			     NULL);
-
-		if (info->quiet)
-			strvec_push(&cpr.args, "--quiet");
-
-		strvec_push(&cpr.args, "--");
-		strvec_pushv(&cpr.args, info->argv);
-
-		if (run_command(&cpr))
-			die(_("run_command returned non-zero status while "
-				"recursing in the nested submodules of %s\n."),
-				displaypath);
-	}
-
-cleanup:
-	free(displaypath);
-}
-
-static int module_foreach(int argc, const char **argv, const char *prefix)
-{
-	struct foreach_cb info = FOREACH_CB_INIT;
-	struct pathspec pathspec;
-	struct module_list list = MODULE_LIST_INIT;
-
-	struct option module_foreach_options[] = {
-		OPT__QUIET(&info.quiet, N_("Suppress output of entering each submodule command")),
-		OPT_BOOL(0, "recursive", &info.recursive,
-			 N_("Recurse into nested submodules")),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule--helper foreach [--quiet] [--recursive] [--] <command>"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, module_foreach_options,
-			     git_submodule_helper_usage, 0);
-
-	if (module_list_compute(0, NULL, prefix, &pathspec, &list) < 0)
-		return 1;
-
-	info.argc = argc;
-	info.argv = argv;
-	info.prefix = prefix;
-
-	for_each_listed_submodule(&list, runcommand_in_submodule_cb, &info);
-
-	return 0;
-}
-
-static char *compute_submodule_clone_url(const char *rel_url)
-{
-	char *remoteurl, *relurl;
-	char *remote = get_default_remote();
-	struct strbuf remotesb = STRBUF_INIT;
-
-	strbuf_addf(&remotesb, "remote.%s.url", remote);
-	if (git_config_get_string(remotesb.buf, &remoteurl)) {
-		warning(_("could not look up configuration '%s'. Assuming this repository is its own authoritative upstream."), remotesb.buf);
-		remoteurl = xgetcwd();
-	}
-	relurl = relative_url(remoteurl, rel_url, NULL);
-
-	free(remote);
-	free(remoteurl);
-	strbuf_release(&remotesb);
-
-	return relurl;
-}
-
-struct init_cb {
-	const char *prefix;
-	unsigned int flags;
-};
-#define INIT_CB_INIT { NULL, 0 }
-
-static void init_submodule(const char *path, const char *prefix,
-			   unsigned int flags)
-{
-	const struct submodule *sub;
-	struct strbuf sb = STRBUF_INIT;
-	char *upd = NULL, *url = NULL, *displaypath;
-
-	displaypath = get_submodule_displaypath(path, prefix);
-
-	sub = submodule_from_path(the_repository, &null_oid, path);
-
-	if (!sub)
-		die(_("No url found for submodule path '%s' in .gitmodules"),
-			displaypath);
-
-	/*
-	 * NEEDSWORK: In a multi-working-tree world, this needs to be
-	 * set in the per-worktree config.
-	 *
-	 * Set active flag for the submodule being initialized
-	 */
-	if (!is_submodule_active(the_repository, path)) {
-		strbuf_addf(&sb, "submodule.%s.active", sub->name);
-		git_config_set_gently(sb.buf, "true");
-		strbuf_reset(&sb);
-	}
-
-	/*
-	 * Copy url setting when it is not set yet.
-	 * To look up the url in .git/config, we must not fall back to
-	 * .gitmodules, so look it up directly.
-	 */
-	strbuf_addf(&sb, "submodule.%s.url", sub->name);
-	if (git_config_get_string(sb.buf, &url)) {
-		if (!sub->url)
-			die(_("No url found for submodule path '%s' in .gitmodules"),
-				displaypath);
-
-		url = xstrdup(sub->url);
-
-		/* Possibly a url relative to parent */
-		if (starts_with_dot_dot_slash(url) ||
-		    starts_with_dot_slash(url)) {
-			char *oldurl = url;
-			url = compute_submodule_clone_url(oldurl);
-			free(oldurl);
-		}
-
-		if (git_config_set_gently(sb.buf, url))
-			die(_("Failed to register url for submodule path '%s'"),
-			    displaypath);
-		if (!(flags & OPT_QUIET))
-			fprintf(stderr,
-				_("Submodule '%s' (%s) registered for path '%s'\n"),
-				sub->name, url, displaypath);
-	}
-	strbuf_reset(&sb);
-
-	/* Copy "update" setting when it is not set yet */
-	strbuf_addf(&sb, "submodule.%s.update", sub->name);
-	if (git_config_get_string(sb.buf, &upd) &&
-	    sub->update_strategy.type != SM_UPDATE_UNSPECIFIED) {
-		if (sub->update_strategy.type == SM_UPDATE_COMMAND) {
-			fprintf(stderr, _("warning: command update mode suggested for submodule '%s'\n"),
-				sub->name);
-			upd = xstrdup("none");
-		} else
-			upd = xstrdup(submodule_strategy_to_string(&sub->update_strategy));
-
-		if (git_config_set_gently(sb.buf, upd))
-			die(_("Failed to register update mode for submodule path '%s'"), displaypath);
-	}
-	strbuf_release(&sb);
-	free(displaypath);
-	free(url);
-	free(upd);
-}
-
-static void init_submodule_cb(const struct cache_entry *list_item, void *cb_data)
-{
-	struct init_cb *info = cb_data;
-	init_submodule(list_item->name, info->prefix, info->flags);
-}
-
-static int module_init(int argc, const char **argv, const char *prefix)
-{
-	struct init_cb info = INIT_CB_INIT;
-	struct pathspec pathspec;
-	struct module_list list = MODULE_LIST_INIT;
-	int quiet = 0;
-
-	struct option module_init_options[] = {
-		OPT__QUIET(&quiet, N_("Suppress output for initializing a submodule")),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule--helper init [<options>] [<path>]"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, module_init_options,
-			     git_submodule_helper_usage, 0);
-
-	if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
-		return 1;
-
-	/*
-	 * If there are no path args and submodule.active is set then,
-	 * by default, only initialize 'active' modules.
-	 */
-	if (!argc && git_config_get_value_multi("submodule.active"))
-		module_list_active(&list);
-
-	info.prefix = prefix;
-	if (quiet)
-		info.flags |= OPT_QUIET;
-
-	for_each_listed_submodule(&list, init_submodule_cb, &info);
-
-	return 0;
-}
-
-struct status_cb {
-	const char *prefix;
-	unsigned int flags;
-};
-#define STATUS_CB_INIT { NULL, 0 }
-
-static void print_status(unsigned int flags, char state, const char *path,
-			 const struct object_id *oid, const char *displaypath)
-{
-	if (flags & OPT_QUIET)
-		return;
-
-	printf("%c%s %s", state, oid_to_hex(oid), displaypath);
-
-	if (state == ' ' || state == '+') {
-		const char *name = compute_rev_name(path, oid_to_hex(oid));
-
-		if (name)
-			printf(" (%s)", name);
-	}
-
-	printf("\n");
-}
-
-static int handle_submodule_head_ref(const char *refname,
-				     const struct object_id *oid, int flags,
-				     void *cb_data)
-{
-	struct object_id *output = cb_data;
-	if (oid)
-		oidcpy(output, oid);
-
-	return 0;
-}
-
-static void status_submodule(const char *path, const struct object_id *ce_oid,
-			     unsigned int ce_flags, const char *prefix,
-			     unsigned int flags)
-{
-	char *displaypath;
-	struct strvec diff_files_args = STRVEC_INIT;
-	struct rev_info rev;
-	int diff_files_result;
-	struct strbuf buf = STRBUF_INIT;
-	const char *git_dir;
-
-	if (!submodule_from_path(the_repository, &null_oid, path))
-		die(_("no submodule mapping found in .gitmodules for path '%s'"),
-		      path);
-
-	displaypath = get_submodule_displaypath(path, prefix);
-
-	if ((CE_STAGEMASK & ce_flags) >> CE_STAGESHIFT) {
-		print_status(flags, 'U', path, &null_oid, displaypath);
-		goto cleanup;
-	}
-
-	strbuf_addf(&buf, "%s/.git", path);
-	git_dir = read_gitfile(buf.buf);
-	if (!git_dir)
-		git_dir = buf.buf;
-
-	if (!is_submodule_active(the_repository, path) ||
-	    !is_git_directory(git_dir)) {
-		print_status(flags, '-', path, ce_oid, displaypath);
-		strbuf_release(&buf);
-		goto cleanup;
-	}
-	strbuf_release(&buf);
-
-	strvec_pushl(&diff_files_args, "diff-files",
-		     "--ignore-submodules=dirty", "--quiet", "--",
-		     path, NULL);
-
-	git_config(git_diff_basic_config, NULL);
-
-	repo_init_revisions(the_repository, &rev, NULL);
-	rev.abbrev = 0;
-	diff_files_args.nr = setup_revisions(diff_files_args.nr,
-					     diff_files_args.v,
-					     &rev, NULL);
-	diff_files_result = run_diff_files(&rev, 0);
-
-	if (!diff_result_code(&rev.diffopt, diff_files_result)) {
-		print_status(flags, ' ', path, ce_oid,
-			     displaypath);
-	} else if (!(flags & OPT_CACHED)) {
-		struct object_id oid;
-		struct ref_store *refs = get_submodule_ref_store(path);
-
-		if (!refs) {
-			print_status(flags, '-', path, ce_oid, displaypath);
-			goto cleanup;
-		}
-		if (refs_head_ref(refs, handle_submodule_head_ref, &oid))
-			die(_("could not resolve HEAD ref inside the "
-			      "submodule '%s'"), path);
-
-		print_status(flags, '+', path, &oid, displaypath);
-	} else {
-		print_status(flags, '+', path, ce_oid, displaypath);
-	}
-
-	if (flags & OPT_RECURSIVE) {
-		struct child_process cpr = CHILD_PROCESS_INIT;
-
-		cpr.git_cmd = 1;
-		cpr.dir = path;
-		prepare_submodule_repo_env(&cpr.env_array);
-
-		strvec_push(&cpr.args, "--super-prefix");
-		strvec_pushf(&cpr.args, "%s/", displaypath);
-		strvec_pushl(&cpr.args, "submodule--helper", "status",
-			     "--recursive", NULL);
-
-		if (flags & OPT_CACHED)
-			strvec_push(&cpr.args, "--cached");
-
-		if (flags & OPT_QUIET)
-			strvec_push(&cpr.args, "--quiet");
-
-		if (run_command(&cpr))
-			die(_("failed to recurse into submodule '%s'"), path);
-	}
-
-cleanup:
-	strvec_clear(&diff_files_args);
-	free(displaypath);
-}
-
-static void status_submodule_cb(const struct cache_entry *list_item,
-				void *cb_data)
-{
-	struct status_cb *info = cb_data;
-	status_submodule(list_item->name, &list_item->oid, list_item->ce_flags,
-			 info->prefix, info->flags);
-}
-
-static int module_status(int argc, const char **argv, const char *prefix)
-{
-	struct status_cb info = STATUS_CB_INIT;
-	struct pathspec pathspec;
-	struct module_list list = MODULE_LIST_INIT;
-	int quiet = 0;
-
-	struct option module_status_options[] = {
-		OPT__QUIET(&quiet, N_("Suppress submodule status output")),
-		OPT_BIT(0, "cached", &info.flags, N_("Use commit stored in the index instead of the one stored in the submodule HEAD"), OPT_CACHED),
-		OPT_BIT(0, "recursive", &info.flags, N_("recurse into nested submodules"), OPT_RECURSIVE),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule status [--quiet] [--cached] [--recursive] [<path>...]"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, module_status_options,
-			     git_submodule_helper_usage, 0);
-
-	if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
-		return 1;
-
-	info.prefix = prefix;
-	if (quiet)
-		info.flags |= OPT_QUIET;
-
-	for_each_listed_submodule(&list, status_submodule_cb, &info);
-
-	return 0;
-}
-
-static int module_name(int argc, const char **argv, const char *prefix)
-{
-	const struct submodule *sub;
-
-	if (argc != 2)
-		usage(_("git submodule--helper name <path>"));
-
-	sub = submodule_from_path(the_repository, &null_oid, argv[1]);
-
-	if (!sub)
-		die(_("no submodule mapping found in .gitmodules for path '%s'"),
-		    argv[1]);
-
-	printf("%s\n", sub->name);
-
-	return 0;
-}
-
-struct module_cb {
-	unsigned int mod_src;
-	unsigned int mod_dst;
-	struct object_id oid_src;
-	struct object_id oid_dst;
-	char status;
-	const char *sm_path;
-};
-#define MODULE_CB_INIT { 0, 0, NULL, NULL, '\0', NULL }
-
-struct module_cb_list {
-	struct module_cb **entries;
-	int alloc, nr;
-};
-#define MODULE_CB_LIST_INIT { NULL, 0, 0 }
-
-struct summary_cb {
-	int argc;
-	const char **argv;
-	const char *prefix;
-	unsigned int cached: 1;
-	unsigned int for_status: 1;
-	unsigned int files: 1;
-	int summary_limit;
-};
-#define SUMMARY_CB_INIT { 0, NULL, NULL, 0, 0, 0, 0 }
-
-enum diff_cmd {
-	DIFF_INDEX,
-	DIFF_FILES
-};
-
-static char *verify_submodule_committish(const char *sm_path,
-					 const char *committish)
-{
-	struct child_process cp_rev_parse = CHILD_PROCESS_INIT;
-	struct strbuf result = STRBUF_INIT;
-
-	cp_rev_parse.git_cmd = 1;
-	cp_rev_parse.dir = sm_path;
-	prepare_submodule_repo_env(&cp_rev_parse.env_array);
-	strvec_pushl(&cp_rev_parse.args, "rev-parse", "-q", "--short", NULL);
-	strvec_pushf(&cp_rev_parse.args, "%s^0", committish);
-	strvec_push(&cp_rev_parse.args, "--");
-
-	if (capture_command(&cp_rev_parse, &result, 0))
-		return NULL;
-
-	strbuf_trim_trailing_newline(&result);
-	return strbuf_detach(&result, NULL);
-}
-
-static void print_submodule_summary(struct summary_cb *info, char *errmsg,
-				    int total_commits, const char *displaypath,
-				    const char *src_abbrev, const char *dst_abbrev,
-				    struct module_cb *p)
-{
-	if (p->status == 'T') {
-		if (S_ISGITLINK(p->mod_dst))
-			printf(_("* %s %s(blob)->%s(submodule)"),
-				 displaypath, src_abbrev, dst_abbrev);
-		else
-			printf(_("* %s %s(submodule)->%s(blob)"),
-				 displaypath, src_abbrev, dst_abbrev);
-	} else {
-		printf("* %s %s...%s",
-			displaypath, src_abbrev, dst_abbrev);
-	}
-
-	if (total_commits < 0)
-		printf(":\n");
-	else
-		printf(" (%d):\n", total_commits);
-
-	if (errmsg) {
-		printf(_("%s"), errmsg);
-	} else if (total_commits > 0) {
-		struct child_process cp_log = CHILD_PROCESS_INIT;
-
-		cp_log.git_cmd = 1;
-		cp_log.dir = p->sm_path;
-		prepare_submodule_repo_env(&cp_log.env_array);
-		strvec_pushl(&cp_log.args, "log", NULL);
-
-		if (S_ISGITLINK(p->mod_src) && S_ISGITLINK(p->mod_dst)) {
-			if (info->summary_limit > 0)
-				strvec_pushf(&cp_log.args, "-%d",
-					     info->summary_limit);
-
-			strvec_pushl(&cp_log.args, "--pretty=  %m %s",
-				     "--first-parent", NULL);
-			strvec_pushf(&cp_log.args, "%s...%s",
-				     src_abbrev, dst_abbrev);
-		} else if (S_ISGITLINK(p->mod_dst)) {
-			strvec_pushl(&cp_log.args, "--pretty=  > %s",
-				     "-1", dst_abbrev, NULL);
-		} else {
-			strvec_pushl(&cp_log.args, "--pretty=  < %s",
-				     "-1", src_abbrev, NULL);
-		}
-		run_command(&cp_log);
-	}
-	printf("\n");
-}
-
-static void generate_submodule_summary(struct summary_cb *info,
-				       struct module_cb *p)
-{
-	char *displaypath, *src_abbrev = NULL, *dst_abbrev;
-	int missing_src = 0, missing_dst = 0;
-	char *errmsg = NULL;
-	int total_commits = -1;
-
-	if (!info->cached && oideq(&p->oid_dst, &null_oid)) {
-		if (S_ISGITLINK(p->mod_dst)) {
-			struct ref_store *refs = get_submodule_ref_store(p->sm_path);
-			if (refs)
-				refs_head_ref(refs, handle_submodule_head_ref, &p->oid_dst);
-		} else if (S_ISLNK(p->mod_dst) || S_ISREG(p->mod_dst)) {
-			struct stat st;
-			int fd = open(p->sm_path, O_RDONLY);
-
-			if (fd < 0 || fstat(fd, &st) < 0 ||
-			    index_fd(&the_index, &p->oid_dst, fd, &st, OBJ_BLOB,
-				     p->sm_path, 0))
-				error(_("couldn't hash object from '%s'"), p->sm_path);
-		} else {
-			/* for a submodule removal (mode:0000000), don't warn */
-			if (p->mod_dst)
-				warning(_("unexpected mode %o\n"), p->mod_dst);
-		}
-	}
-
-	if (S_ISGITLINK(p->mod_src)) {
-		if (p->status != 'D')
-			src_abbrev = verify_submodule_committish(p->sm_path,
-								 oid_to_hex(&p->oid_src));
-		if (!src_abbrev) {
-			missing_src = 1;
-			/*
-			 * As `rev-parse` failed, we fallback to getting
-			 * the abbreviated hash using oid_src. We do
-			 * this as we might still need the abbreviated
-			 * hash in cases like a submodule type change, etc.
-			 */
-			src_abbrev = xstrndup(oid_to_hex(&p->oid_src), 7);
-		}
-	} else {
-		/*
-		 * The source does not point to a submodule.
-		 * So, we fallback to getting the abbreviation using
-		 * oid_src as we might still need the abbreviated
-		 * hash in cases like submodule add, etc.
-		 */
-		src_abbrev = xstrndup(oid_to_hex(&p->oid_src), 7);
-	}
-
-	if (S_ISGITLINK(p->mod_dst)) {
-		dst_abbrev = verify_submodule_committish(p->sm_path,
-							 oid_to_hex(&p->oid_dst));
-		if (!dst_abbrev) {
-			missing_dst = 1;
-			/*
-			 * As `rev-parse` failed, we fallback to getting
-			 * the abbreviated hash using oid_dst. We do
-			 * this as we might still need the abbreviated
-			 * hash in cases like a submodule type change, etc.
-			 */
-			dst_abbrev = xstrndup(oid_to_hex(&p->oid_dst), 7);
-		}
-	} else {
-		/*
-		 * The destination does not point to a submodule.
-		 * So, we fallback to getting the abbreviation using
-		 * oid_dst as we might still need the abbreviated
-		 * hash in cases like a submodule removal, etc.
-		 */
-		dst_abbrev = xstrndup(oid_to_hex(&p->oid_dst), 7);
-	}
-
-	displaypath = get_submodule_displaypath(p->sm_path, info->prefix);
-
-	if (!missing_src && !missing_dst) {
-		struct child_process cp_rev_list = CHILD_PROCESS_INIT;
-		struct strbuf sb_rev_list = STRBUF_INIT;
-
-		strvec_pushl(&cp_rev_list.args, "rev-list",
-			     "--first-parent", "--count", NULL);
-		if (S_ISGITLINK(p->mod_src) && S_ISGITLINK(p->mod_dst))
-			strvec_pushf(&cp_rev_list.args, "%s...%s",
-				     src_abbrev, dst_abbrev);
-		else
-			strvec_push(&cp_rev_list.args, S_ISGITLINK(p->mod_src) ?
-				    src_abbrev : dst_abbrev);
-		strvec_push(&cp_rev_list.args, "--");
-
-		cp_rev_list.git_cmd = 1;
-		cp_rev_list.dir = p->sm_path;
-		prepare_submodule_repo_env(&cp_rev_list.env_array);
-
-		if (!capture_command(&cp_rev_list, &sb_rev_list, 0))
-			total_commits = atoi(sb_rev_list.buf);
-
-		strbuf_release(&sb_rev_list);
-	} else {
-		/*
-		 * Don't give error msg for modification whose dst is not
-		 * submodule, i.e., deleted or changed to blob
-		 */
-		if (S_ISGITLINK(p->mod_dst)) {
-			struct strbuf errmsg_str = STRBUF_INIT;
-			if (missing_src && missing_dst) {
-				strbuf_addf(&errmsg_str, "  Warn: %s doesn't contain commits %s and %s\n",
-					    displaypath, oid_to_hex(&p->oid_src),
-					    oid_to_hex(&p->oid_dst));
-			} else {
-				strbuf_addf(&errmsg_str, "  Warn: %s doesn't contain commit %s\n",
-					    displaypath, missing_src ?
-					    oid_to_hex(&p->oid_src) :
-					    oid_to_hex(&p->oid_dst));
-			}
-			errmsg = strbuf_detach(&errmsg_str, NULL);
-		}
-	}
-
-	print_submodule_summary(info, errmsg, total_commits,
-				displaypath, src_abbrev,
-				dst_abbrev, p);
-
-	free(displaypath);
-	free(src_abbrev);
-	free(dst_abbrev);
-}
-
-static void prepare_submodule_summary(struct summary_cb *info,
-				      struct module_cb_list *list)
-{
-	int i;
-	for (i = 0; i < list->nr; i++) {
-		const struct submodule *sub;
-		struct module_cb *p = list->entries[i];
-		struct strbuf sm_gitdir = STRBUF_INIT;
-
-		if (p->status == 'D' || p->status == 'T') {
-			generate_submodule_summary(info, p);
-			continue;
-		}
-
-		if (info->for_status && p->status != 'A' &&
-		    (sub = submodule_from_path(the_repository,
-					       &null_oid, p->sm_path))) {
-			char *config_key = NULL;
-			const char *value;
-			int ignore_all = 0;
-
-			config_key = xstrfmt("submodule.%s.ignore",
-					     sub->name);
-			if (!git_config_get_string_tmp(config_key, &value))
-				ignore_all = !strcmp(value, "all");
-			else if (sub->ignore)
-				ignore_all = !strcmp(sub->ignore, "all");
-
-			free(config_key);
-			if (ignore_all)
-				continue;
-		}
-
-		/* Also show added or modified modules which are checked out */
-		strbuf_addstr(&sm_gitdir, p->sm_path);
-		if (is_nonbare_repository_dir(&sm_gitdir))
-			generate_submodule_summary(info, p);
-		strbuf_release(&sm_gitdir);
-	}
-}
-
-static void submodule_summary_callback(struct diff_queue_struct *q,
-				       struct diff_options *options,
-				       void *data)
-{
-	int i;
-	struct module_cb_list *list = data;
-	for (i = 0; i < q->nr; i++) {
-		struct diff_filepair *p = q->queue[i];
-		struct module_cb *temp;
-
-		if (!S_ISGITLINK(p->one->mode) && !S_ISGITLINK(p->two->mode))
-			continue;
-		temp = (struct module_cb*)malloc(sizeof(struct module_cb));
-		temp->mod_src = p->one->mode;
-		temp->mod_dst = p->two->mode;
-		temp->oid_src = p->one->oid;
-		temp->oid_dst = p->two->oid;
-		temp->status = p->status;
-		temp->sm_path = xstrdup(p->one->path);
-
-		ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
-		list->entries[list->nr++] = temp;
-	}
-}
-
-static const char *get_diff_cmd(enum diff_cmd diff_cmd)
-{
-	switch (diff_cmd) {
-	case DIFF_INDEX: return "diff-index";
-	case DIFF_FILES: return "diff-files";
-	default: BUG("bad diff_cmd value %d", diff_cmd);
-	}
-}
-
-static int compute_summary_module_list(struct object_id *head_oid,
-				       struct summary_cb *info,
-				       enum diff_cmd diff_cmd)
-{
-	struct strvec diff_args = STRVEC_INIT;
-	struct rev_info rev;
-	struct module_cb_list list = MODULE_CB_LIST_INIT;
-
-	strvec_push(&diff_args, get_diff_cmd(diff_cmd));
-	if (info->cached)
-		strvec_push(&diff_args, "--cached");
-	strvec_pushl(&diff_args, "--ignore-submodules=dirty", "--raw", NULL);
-	if (head_oid)
-		strvec_push(&diff_args, oid_to_hex(head_oid));
-	strvec_push(&diff_args, "--");
-	if (info->argc)
-		strvec_pushv(&diff_args, info->argv);
-
-	git_config(git_diff_basic_config, NULL);
-	init_revisions(&rev, info->prefix);
-	rev.abbrev = 0;
-	precompose_argv(diff_args.nr, diff_args.v);
-	setup_revisions(diff_args.nr, diff_args.v, &rev, NULL);
-	rev.diffopt.output_format = DIFF_FORMAT_NO_OUTPUT | DIFF_FORMAT_CALLBACK;
-	rev.diffopt.format_callback = submodule_summary_callback;
-	rev.diffopt.format_callback_data = &list;
-
-	if (!info->cached) {
-		if (diff_cmd == DIFF_INDEX)
-			setup_work_tree();
-		if (read_cache_preload(&rev.diffopt.pathspec) < 0) {
-			perror("read_cache_preload");
-			return -1;
-		}
-	} else if (read_cache() < 0) {
-		perror("read_cache");
-		return -1;
-	}
-
-	if (diff_cmd == DIFF_INDEX)
-		run_diff_index(&rev, info->cached);
-	else
-		run_diff_files(&rev, 0);
-	prepare_submodule_summary(info, &list);
-	strvec_clear(&diff_args);
-	return 0;
-}
-
-static int module_summary(int argc, const char **argv, const char *prefix)
-{
-	struct summary_cb info = SUMMARY_CB_INIT;
-	int cached = 0;
-	int for_status = 0;
-	int files = 0;
-	int summary_limit = -1;
-	enum diff_cmd diff_cmd = DIFF_INDEX;
-	struct object_id head_oid;
-	int ret;
-
-	struct option module_summary_options[] = {
-		OPT_BOOL(0, "cached", &cached,
-			 N_("use the commit stored in the index instead of the submodule HEAD")),
-		OPT_BOOL(0, "files", &files,
-			 N_("to compare the commit in the index with that in the submodule HEAD")),
-		OPT_BOOL(0, "for-status", &for_status,
-			 N_("skip submodules with 'ignore_config' value set to 'all'")),
-		OPT_INTEGER('n', "summary-limit", &summary_limit,
-			     N_("limit the summary size")),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule--helper summary [<options>] [<commit>] [--] [<path>]"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, module_summary_options,
-			     git_submodule_helper_usage, 0);
-
-	if (!summary_limit)
-		return 0;
-
-	if (!get_oid(argc ? argv[0] : "HEAD", &head_oid)) {
-		if (argc) {
-			argv++;
-			argc--;
-		}
-	} else if (!argc || !strcmp(argv[0], "HEAD")) {
-		/* before the first commit: compare with an empty tree */
-		oidcpy(&head_oid, the_hash_algo->empty_tree);
-		if (argc) {
-			argv++;
-			argc--;
-		}
-	} else {
-		if (get_oid("HEAD", &head_oid))
-			die(_("could not fetch a revision for HEAD"));
-	}
-
-	if (files) {
-		if (cached)
-			die(_("--cached and --files are mutually exclusive"));
-		diff_cmd = DIFF_FILES;
-	}
-
-	info.argc = argc;
-	info.argv = argv;
-	info.prefix = prefix;
-	info.cached = !!cached;
-	info.files = !!files;
-	info.for_status = !!for_status;
-	info.summary_limit = summary_limit;
-
-	ret = compute_summary_module_list((diff_cmd == DIFF_INDEX) ? &head_oid : NULL,
-					  &info, diff_cmd);
-	return ret;
-}
-
-struct sync_cb {
-	const char *prefix;
-	unsigned int flags;
-};
-#define SYNC_CB_INIT { NULL, 0 }
-
-static void sync_submodule(const char *path, const char *prefix,
-			   unsigned int flags)
-{
-	const struct submodule *sub;
-	char *remote_key = NULL;
-	char *sub_origin_url, *super_config_url, *displaypath;
-	struct strbuf sb = STRBUF_INIT;
-	struct child_process cp = CHILD_PROCESS_INIT;
-	char *sub_config_path = NULL;
-
-	if (!is_submodule_active(the_repository, path))
-		return;
-
-	sub = submodule_from_path(the_repository, &null_oid, path);
-
-	if (sub && sub->url) {
-		if (starts_with_dot_dot_slash(sub->url) ||
-		    starts_with_dot_slash(sub->url)) {
-			char *remote_url, *up_path;
-			char *remote = get_default_remote();
-			strbuf_addf(&sb, "remote.%s.url", remote);
-
-			if (git_config_get_string(sb.buf, &remote_url))
-				remote_url = xgetcwd();
-
-			up_path = get_up_path(path);
-			sub_origin_url = relative_url(remote_url, sub->url, up_path);
-			super_config_url = relative_url(remote_url, sub->url, NULL);
-
-			free(remote);
-			free(up_path);
-			free(remote_url);
-		} else {
-			sub_origin_url = xstrdup(sub->url);
-			super_config_url = xstrdup(sub->url);
-		}
-	} else {
-		sub_origin_url = xstrdup("");
-		super_config_url = xstrdup("");
-	}
-
-	displaypath = get_submodule_displaypath(path, prefix);
-
-	if (!(flags & OPT_QUIET))
-		printf(_("Synchronizing submodule url for '%s'\n"),
-			 displaypath);
-
-	strbuf_reset(&sb);
-	strbuf_addf(&sb, "submodule.%s.url", sub->name);
-	if (git_config_set_gently(sb.buf, super_config_url))
-		die(_("failed to register url for submodule path '%s'"),
-		      displaypath);
-
-	if (!is_submodule_populated_gently(path, NULL))
-		goto cleanup;
-
-	prepare_submodule_repo_env(&cp.env_array);
-	cp.git_cmd = 1;
-	cp.dir = path;
-	strvec_pushl(&cp.args, "submodule--helper",
-		     "print-default-remote", NULL);
-
-	strbuf_reset(&sb);
-	if (capture_command(&cp, &sb, 0))
-		die(_("failed to get the default remote for submodule '%s'"),
-		      path);
-
-	strbuf_strip_suffix(&sb, "\n");
-	remote_key = xstrfmt("remote.%s.url", sb.buf);
-
-	strbuf_reset(&sb);
-	submodule_to_gitdir(&sb, path);
-	strbuf_addstr(&sb, "/config");
-
-	if (git_config_set_in_file_gently(sb.buf, remote_key, sub_origin_url))
-		die(_("failed to update remote for submodule '%s'"),
-		      path);
-
-	if (flags & OPT_RECURSIVE) {
-		struct child_process cpr = CHILD_PROCESS_INIT;
-
-		cpr.git_cmd = 1;
-		cpr.dir = path;
-		prepare_submodule_repo_env(&cpr.env_array);
-
-		strvec_push(&cpr.args, "--super-prefix");
-		strvec_pushf(&cpr.args, "%s/", displaypath);
-		strvec_pushl(&cpr.args, "submodule--helper", "sync",
-			     "--recursive", NULL);
-
-		if (flags & OPT_QUIET)
-			strvec_push(&cpr.args, "--quiet");
-
-		if (run_command(&cpr))
-			die(_("failed to recurse into submodule '%s'"),
-			      path);
-	}
-
-cleanup:
-	free(super_config_url);
-	free(sub_origin_url);
-	strbuf_release(&sb);
-	free(remote_key);
-	free(displaypath);
-	free(sub_config_path);
-}
-
-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);
-}
-
-static int module_sync(int argc, const char **argv, const char *prefix)
-{
-	struct sync_cb info = SYNC_CB_INIT;
-	struct pathspec pathspec;
-	struct module_list list = MODULE_LIST_INIT;
-	int quiet = 0;
-	int recursive = 0;
-
-	struct option module_sync_options[] = {
-		OPT__QUIET(&quiet, N_("Suppress output of synchronizing submodule url")),
-		OPT_BOOL(0, "recursive", &recursive,
-			N_("Recurse into nested submodules")),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule--helper sync [--quiet] [--recursive] [<path>]"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, module_sync_options,
-			     git_submodule_helper_usage, 0);
-
-	if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
-		return 1;
-
-	info.prefix = prefix;
-	if (quiet)
-		info.flags |= OPT_QUIET;
-	if (recursive)
-		info.flags |= OPT_RECURSIVE;
-
-	for_each_listed_submodule(&list, sync_submodule_cb, &info);
-
-	return 0;
-}
-
-struct deinit_cb {
-	const char *prefix;
-	unsigned int flags;
-};
-#define DEINIT_CB_INIT { NULL, 0 }
-
-static void deinit_submodule(const char *path, const char *prefix,
-			     unsigned int flags)
-{
-	const struct submodule *sub;
-	char *displaypath = NULL;
-	struct child_process cp_config = CHILD_PROCESS_INIT;
-	struct strbuf sb_config = STRBUF_INIT;
-	char *sub_git_dir = xstrfmt("%s/.git", path);
-
-	sub = submodule_from_path(the_repository, &null_oid, path);
-
-	if (!sub || !sub->name)
-		goto cleanup;
-
-	displaypath = get_submodule_displaypath(path, prefix);
-
-	/* remove the submodule work tree (unless the user already did it) */
-	if (is_directory(path)) {
-		struct strbuf sb_rm = STRBUF_INIT;
-		const char *format;
-
-		/*
-		 * protect submodules containing a .git directory
-		 * NEEDSWORK: instead of dying, automatically call
-		 * absorbgitdirs and (possibly) warn.
-		 */
-		if (is_directory(sub_git_dir))
-			die(_("Submodule work tree '%s' contains a .git "
-			      "directory (use 'rm -rf' if you really want "
-			      "to remove it including all of its history)"),
-			    displaypath);
-
-		if (!(flags & OPT_FORCE)) {
-			struct child_process cp_rm = CHILD_PROCESS_INIT;
-			cp_rm.git_cmd = 1;
-			strvec_pushl(&cp_rm.args, "rm", "-qn",
-				     path, NULL);
-
-			if (run_command(&cp_rm))
-				die(_("Submodule work tree '%s' contains local "
-				      "modifications; use '-f' to discard them"),
-				      displaypath);
-		}
-
-		strbuf_addstr(&sb_rm, path);
-
-		if (!remove_dir_recursively(&sb_rm, 0))
-			format = _("Cleared directory '%s'\n");
-		else
-			format = _("Could not remove submodule work tree '%s'\n");
-
-		if (!(flags & OPT_QUIET))
-			printf(format, displaypath);
-
-		submodule_unset_core_worktree(sub);
-
-		strbuf_release(&sb_rm);
-	}
-
-	if (mkdir(path, 0777))
-		printf(_("could not create empty submodule directory %s"),
-		      displaypath);
-
-	cp_config.git_cmd = 1;
-	strvec_pushl(&cp_config.args, "config", "--get-regexp", NULL);
-	strvec_pushf(&cp_config.args, "submodule.%s\\.", sub->name);
-
-	/* remove the .git/config entries (unless the user already did it) */
-	if (!capture_command(&cp_config, &sb_config, 0) && sb_config.len) {
-		char *sub_key = xstrfmt("submodule.%s", sub->name);
-		/*
-		 * remove the whole section so we have a clean state when
-		 * the user later decides to init this submodule again
-		 */
-		git_config_rename_section_in_file(NULL, sub_key, NULL);
-		if (!(flags & OPT_QUIET))
-			printf(_("Submodule '%s' (%s) unregistered for path '%s'\n"),
-				 sub->name, sub->url, displaypath);
-		free(sub_key);
-	}
-
-cleanup:
-	free(displaypath);
-	free(sub_git_dir);
-	strbuf_release(&sb_config);
-}
-
-static void deinit_submodule_cb(const struct cache_entry *list_item,
-				void *cb_data)
-{
-	struct deinit_cb *info = cb_data;
-	deinit_submodule(list_item->name, info->prefix, info->flags);
-}
-
-static int module_deinit(int argc, const char **argv, const char *prefix)
-{
-	struct deinit_cb info = DEINIT_CB_INIT;
-	struct pathspec pathspec;
-	struct module_list list = MODULE_LIST_INIT;
-	int quiet = 0;
-	int force = 0;
-	int all = 0;
-
-	struct option module_deinit_options[] = {
-		OPT__QUIET(&quiet, N_("Suppress submodule status output")),
-		OPT__FORCE(&force, N_("Remove submodule working trees even if they contain local changes"), 0),
-		OPT_BOOL(0, "all", &all, N_("Unregister all submodules")),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule deinit [--quiet] [-f | --force] [--all | [--] [<path>...]]"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, module_deinit_options,
-			     git_submodule_helper_usage, 0);
-
-	if (all && argc) {
-		error("pathspec and --all are incompatible");
-		usage_with_options(git_submodule_helper_usage,
-				   module_deinit_options);
-	}
-
-	if (!argc && !all)
-		die(_("Use '--all' if you really want to deinitialize all submodules"));
-
-	if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0)
-		return 1;
-
-	info.prefix = prefix;
-	if (quiet)
-		info.flags |= OPT_QUIET;
-	if (force)
-		info.flags |= OPT_FORCE;
-
-	for_each_listed_submodule(&list, deinit_submodule_cb, &info);
-
-	return 0;
-}
-
-static int clone_submodule(const char *path, const char *gitdir, const char *url,
-			   const char *depth, struct string_list *reference, int dissociate,
-			   int quiet, int progress, int single_branch)
-{
-	struct child_process cp = CHILD_PROCESS_INIT;
-
-	strvec_push(&cp.args, "clone");
-	strvec_push(&cp.args, "--no-checkout");
-	if (quiet)
-		strvec_push(&cp.args, "--quiet");
-	if (progress)
-		strvec_push(&cp.args, "--progress");
-	if (depth && *depth)
-		strvec_pushl(&cp.args, "--depth", depth, NULL);
-	if (reference->nr) {
-		struct string_list_item *item;
-		for_each_string_list_item(item, reference)
-			strvec_pushl(&cp.args, "--reference",
-				     item->string, NULL);
-	}
-	if (dissociate)
-		strvec_push(&cp.args, "--dissociate");
-	if (gitdir && *gitdir)
-		strvec_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
-	if (single_branch >= 0)
-		strvec_push(&cp.args, single_branch ?
-					  "--single-branch" :
-					  "--no-single-branch");
-
-	strvec_push(&cp.args, "--");
-	strvec_push(&cp.args, url);
-	strvec_push(&cp.args, path);
-
-	cp.git_cmd = 1;
-	prepare_submodule_repo_env(&cp.env_array);
-	cp.no_stdin = 1;
-
-	return run_command(&cp);
-}
-
-struct submodule_alternate_setup {
-	const char *submodule_name;
-	enum SUBMODULE_ALTERNATE_ERROR_MODE {
-		SUBMODULE_ALTERNATE_ERROR_DIE,
-		SUBMODULE_ALTERNATE_ERROR_INFO,
-		SUBMODULE_ALTERNATE_ERROR_IGNORE
-	} error_mode;
-	struct string_list *reference;
-};
-#define SUBMODULE_ALTERNATE_SETUP_INIT { NULL, \
-	SUBMODULE_ALTERNATE_ERROR_IGNORE, NULL }
-
-static const char alternate_error_advice[] = N_(
-"An alternate computed from a superproject's alternate is invalid.\n"
-"To allow Git to clone without an alternate in such a case, set\n"
-"submodule.alternateErrorStrategy to 'info' or, equivalently, clone with\n"
-"'--reference-if-able' instead of '--reference'."
-);
-
-static int add_possible_reference_from_superproject(
-		struct object_directory *odb, void *sas_cb)
-{
-	struct submodule_alternate_setup *sas = sas_cb;
-	size_t len;
-
-	/*
-	 * If the alternate object store is another repository, try the
-	 * standard layout with .git/(modules/<name>)+/objects
-	 */
-	if (strip_suffix(odb->path, "/objects", &len)) {
-		char *sm_alternate;
-		struct strbuf sb = STRBUF_INIT;
-		struct strbuf err = STRBUF_INIT;
-		strbuf_add(&sb, odb->path, len);
-
-		/*
-		 * We need to end the new path with '/' to mark it as a dir,
-		 * otherwise a submodule name containing '/' will be broken
-		 * as the last part of a missing submodule reference would
-		 * be taken as a file name.
-		 */
-		strbuf_addf(&sb, "/modules/%s/", sas->submodule_name);
-
-		sm_alternate = compute_alternate_path(sb.buf, &err);
-		if (sm_alternate) {
-			string_list_append(sas->reference, xstrdup(sb.buf));
-			free(sm_alternate);
-		} else {
-			switch (sas->error_mode) {
-			case SUBMODULE_ALTERNATE_ERROR_DIE:
-				if (advice_submodule_alternate_error_strategy_die)
-					advise(_(alternate_error_advice));
-				die(_("submodule '%s' cannot add alternate: %s"),
-				    sas->submodule_name, err.buf);
-			case SUBMODULE_ALTERNATE_ERROR_INFO:
-				fprintf_ln(stderr, _("submodule '%s' cannot add alternate: %s"),
-					sas->submodule_name, err.buf);
-			case SUBMODULE_ALTERNATE_ERROR_IGNORE:
-				; /* nothing */
-			}
-		}
-		strbuf_release(&sb);
-	}
-
-	return 0;
-}
-
-static void prepare_possible_alternates(const char *sm_name,
-		struct string_list *reference)
-{
-	char *sm_alternate = NULL, *error_strategy = NULL;
-	struct submodule_alternate_setup sas = SUBMODULE_ALTERNATE_SETUP_INIT;
-
-	git_config_get_string("submodule.alternateLocation", &sm_alternate);
-	if (!sm_alternate)
-		return;
-
-	git_config_get_string("submodule.alternateErrorStrategy", &error_strategy);
-
-	if (!error_strategy)
-		error_strategy = xstrdup("die");
-
-	sas.submodule_name = sm_name;
-	sas.reference = reference;
-	if (!strcmp(error_strategy, "die"))
-		sas.error_mode = SUBMODULE_ALTERNATE_ERROR_DIE;
-	else if (!strcmp(error_strategy, "info"))
-		sas.error_mode = SUBMODULE_ALTERNATE_ERROR_INFO;
-	else if (!strcmp(error_strategy, "ignore"))
-		sas.error_mode = SUBMODULE_ALTERNATE_ERROR_IGNORE;
-	else
-		die(_("Value '%s' for submodule.alternateErrorStrategy is not recognized"), error_strategy);
-
-	if (!strcmp(sm_alternate, "superproject"))
-		foreach_alt_odb(add_possible_reference_from_superproject, &sas);
-	else if (!strcmp(sm_alternate, "no"))
-		; /* do nothing */
-	else
-		die(_("Value '%s' for submodule.alternateLocation is not recognized"), sm_alternate);
-
-	free(sm_alternate);
-	free(error_strategy);
-}
-
-static int module_clone(int argc, const char **argv, const char *prefix)
-{
-	const char *name = NULL, *url = NULL, *depth = NULL;
-	int quiet = 0;
-	int progress = 0;
-	char *p, *path = NULL, *sm_gitdir;
-	struct strbuf sb = STRBUF_INIT;
-	struct string_list reference = STRING_LIST_INIT_NODUP;
-	int dissociate = 0, require_init = 0;
-	char *sm_alternate = NULL, *error_strategy = NULL;
-	int single_branch = -1;
-
-	struct option module_clone_options[] = {
-		OPT_STRING(0, "prefix", &prefix,
-			   N_("path"),
-			   N_("alternative anchor for relative paths")),
-		OPT_STRING(0, "path", &path,
-			   N_("path"),
-			   N_("where the new submodule will be cloned to")),
-		OPT_STRING(0, "name", &name,
-			   N_("string"),
-			   N_("name of the new submodule")),
-		OPT_STRING(0, "url", &url,
-			   N_("string"),
-			   N_("url where to clone the submodule from")),
-		OPT_STRING_LIST(0, "reference", &reference,
-			   N_("repo"),
-			   N_("reference repository")),
-		OPT_BOOL(0, "dissociate", &dissociate,
-			   N_("use --reference only while cloning")),
-		OPT_STRING(0, "depth", &depth,
-			   N_("string"),
-			   N_("depth for shallow clones")),
-		OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
-		OPT_BOOL(0, "progress", &progress,
-			   N_("force cloning progress")),
-		OPT_BOOL(0, "require-init", &require_init,
-			   N_("disallow cloning into non-empty directory")),
-		OPT_BOOL(0, "single-branch", &single_branch,
-			 N_("clone only one branch, HEAD or --branch")),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
-		   "[--reference <repository>] [--name <name>] [--depth <depth>] "
-		   "[--single-branch] "
-		   "--url <url> --path <path>"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, module_clone_options,
-			     git_submodule_helper_usage, 0);
-
-	if (argc || !url || !path || !*path)
-		usage_with_options(git_submodule_helper_usage,
-				   module_clone_options);
-
-	strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
-	sm_gitdir = absolute_pathdup(sb.buf);
-	strbuf_reset(&sb);
-
-	if (!is_absolute_path(path)) {
-		strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
-		path = strbuf_detach(&sb, NULL);
-	} else
-		path = xstrdup(path);
-
-	if (validate_submodule_git_dir(sm_gitdir, name) < 0)
-		die(_("refusing to create/use '%s' in another submodule's "
-			"git dir"), sm_gitdir);
-
-	if (!file_exists(sm_gitdir)) {
-		if (safe_create_leading_directories_const(sm_gitdir) < 0)
-			die(_("could not create directory '%s'"), sm_gitdir);
-
-		prepare_possible_alternates(name, &reference);
-
-		if (clone_submodule(path, sm_gitdir, url, depth, &reference, dissociate,
-				    quiet, progress, single_branch))
-			die(_("clone of '%s' into submodule path '%s' failed"),
-			    url, path);
-	} else {
-		if (require_init && !access(path, X_OK) && !is_empty_dir(path))
-			die(_("directory not empty: '%s'"), path);
-		if (safe_create_leading_directories_const(path) < 0)
-			die(_("could not create directory '%s'"), path);
-		strbuf_addf(&sb, "%s/index", sm_gitdir);
-		unlink_or_warn(sb.buf);
-		strbuf_reset(&sb);
-	}
-
-	connect_work_tree_and_git_dir(path, sm_gitdir, 0);
-
-	p = git_pathdup_submodule(path, "config");
-	if (!p)
-		die(_("could not get submodule directory for '%s'"), path);
-
-	/* setup alternateLocation and alternateErrorStrategy in the cloned submodule if needed */
-	git_config_get_string("submodule.alternateLocation", &sm_alternate);
-	if (sm_alternate)
-		git_config_set_in_file(p, "submodule.alternateLocation",
-					   sm_alternate);
-	git_config_get_string("submodule.alternateErrorStrategy", &error_strategy);
-	if (error_strategy)
-		git_config_set_in_file(p, "submodule.alternateErrorStrategy",
-					   error_strategy);
-
-	free(sm_alternate);
-	free(error_strategy);
-
-	strbuf_release(&sb);
-	free(sm_gitdir);
-	free(path);
-	free(p);
-	return 0;
-}
-
-static void determine_submodule_update_strategy(struct repository *r,
-						int just_cloned,
-						const char *path,
-						const char *update,
-						struct submodule_update_strategy *out)
-{
-	const struct submodule *sub = submodule_from_path(r, &null_oid, path);
-	char *key;
-	const char *val;
-
-	key = xstrfmt("submodule.%s.update", sub->name);
-
-	if (update) {
-		if (parse_submodule_update_strategy(update, out) < 0)
-			die(_("Invalid update mode '%s' for submodule path '%s'"),
-				update, path);
-	} else if (!repo_config_get_string_tmp(r, key, &val)) {
-		if (parse_submodule_update_strategy(val, out) < 0)
-			die(_("Invalid update mode '%s' configured for submodule path '%s'"),
-				val, path);
-	} else if (sub->update_strategy.type != SM_UPDATE_UNSPECIFIED) {
-		if (sub->update_strategy.type == SM_UPDATE_COMMAND)
-			BUG("how did we read update = !command from .gitmodules?");
-		out->type = sub->update_strategy.type;
-		out->command = sub->update_strategy.command;
-	} else
-		out->type = SM_UPDATE_CHECKOUT;
-
-	if (just_cloned &&
-	    (out->type == SM_UPDATE_MERGE ||
-	     out->type == SM_UPDATE_REBASE ||
-	     out->type == SM_UPDATE_NONE))
-		out->type = SM_UPDATE_CHECKOUT;
-
-	free(key);
-}
-
-static int module_update_module_mode(int argc, const char **argv, const char *prefix)
-{
-	const char *path, *update = NULL;
-	int just_cloned;
-	struct submodule_update_strategy update_strategy = { .type = SM_UPDATE_CHECKOUT };
-
-	if (argc < 3 || argc > 4)
-		die("submodule--helper update-module-clone expects <just-cloned> <path> [<update>]");
-
-	just_cloned = git_config_int("just_cloned", argv[1]);
-	path = argv[2];
-
-	if (argc == 4)
-		update = argv[3];
-
-	determine_submodule_update_strategy(the_repository,
-					    just_cloned, path, update,
-					    &update_strategy);
-	fputs(submodule_strategy_to_string(&update_strategy), stdout);
-
-	return 0;
-}
-
-struct update_clone_data {
-	const struct submodule *sub;
-	struct object_id oid;
-	unsigned just_cloned;
-};
-
-struct submodule_update_clone {
-	/* index into 'list', the list of submodules to look into for cloning */
-	int current;
-	struct module_list list;
-	unsigned warn_if_uninitialized : 1;
-
-	/* update parameter passed via commandline */
-	struct submodule_update_strategy update;
-
-	/* configuration parameters which are passed on to the children */
-	int progress;
-	int quiet;
-	int recommend_shallow;
-	struct string_list references;
-	int dissociate;
-	unsigned require_init;
-	const char *depth;
-	const char *recursive_prefix;
-	const char *prefix;
-	int single_branch;
-
-	/* to be consumed by git-submodule.sh */
-	struct update_clone_data *update_clone;
-	int update_clone_nr; int update_clone_alloc;
-
-	/* If we want to stop as fast as possible and return an error */
-	unsigned quickstop : 1;
-
-	/* failed clones to be retried again */
-	const struct cache_entry **failed_clones;
-	int failed_clones_nr, failed_clones_alloc;
-
-	int max_jobs;
-};
-#define SUBMODULE_UPDATE_CLONE_INIT { \
-	.list = MODULE_LIST_INIT, \
-	.update = SUBMODULE_UPDATE_STRATEGY_INIT, \
-	.recommend_shallow = -1, \
-	.references = STRING_LIST_INIT_DUP, \
-	.single_branch = -1, \
-	.max_jobs = 1, \
-}
-
-
-static void next_submodule_warn_missing(struct submodule_update_clone *suc,
-		struct strbuf *out, const char *displaypath)
-{
-	/*
-	 * Only mention uninitialized submodules when their
-	 * paths have been specified.
-	 */
-	if (suc->warn_if_uninitialized) {
-		strbuf_addf(out,
-			_("Submodule path '%s' not initialized"),
-			displaypath);
-		strbuf_addch(out, '\n');
-		strbuf_addstr(out,
-			_("Maybe you want to use 'update --init'?"));
-		strbuf_addch(out, '\n');
-	}
-}
-
-/**
- * Determine whether 'ce' needs to be cloned. If so, prepare the 'child' to
- * run the clone. Returns 1 if 'ce' needs to be cloned, 0 otherwise.
- */
-static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
-					   struct child_process *child,
-					   struct submodule_update_clone *suc,
-					   struct strbuf *out)
-{
-	const struct submodule *sub = NULL;
-	const char *url = NULL;
-	const char *update_string;
-	enum submodule_update_type update_type;
-	char *key;
-	struct strbuf displaypath_sb = STRBUF_INIT;
-	struct strbuf sb = STRBUF_INIT;
-	const char *displaypath = NULL;
-	int needs_cloning = 0;
-	int need_free_url = 0;
-
-	if (ce_stage(ce)) {
-		if (suc->recursive_prefix)
-			strbuf_addf(&sb, "%s/%s", suc->recursive_prefix, ce->name);
-		else
-			strbuf_addstr(&sb, ce->name);
-		strbuf_addf(out, _("Skipping unmerged submodule %s"), sb.buf);
-		strbuf_addch(out, '\n');
-		goto cleanup;
-	}
-
-	sub = submodule_from_path(the_repository, &null_oid, ce->name);
-
-	if (suc->recursive_prefix)
-		displaypath = relative_path(suc->recursive_prefix,
-					    ce->name, &displaypath_sb);
-	else
-		displaypath = ce->name;
-
-	if (!sub) {
-		next_submodule_warn_missing(suc, out, displaypath);
-		goto cleanup;
-	}
-
-	key = xstrfmt("submodule.%s.update", sub->name);
-	if (!repo_config_get_string_tmp(the_repository, key, &update_string)) {
-		update_type = parse_submodule_update_type(update_string);
-	} else {
-		update_type = sub->update_strategy.type;
-	}
-	free(key);
-
-	if (suc->update.type == SM_UPDATE_NONE
-	    || (suc->update.type == SM_UPDATE_UNSPECIFIED
-		&& update_type == SM_UPDATE_NONE)) {
-		strbuf_addf(out, _("Skipping submodule '%s'"), displaypath);
-		strbuf_addch(out, '\n');
-		goto cleanup;
-	}
-
-	/* Check if the submodule has been initialized. */
-	if (!is_submodule_active(the_repository, ce->name)) {
-		next_submodule_warn_missing(suc, out, displaypath);
-		goto cleanup;
-	}
-
-	strbuf_reset(&sb);
-	strbuf_addf(&sb, "submodule.%s.url", sub->name);
-	if (repo_config_get_string_tmp(the_repository, sb.buf, &url)) {
-		if (starts_with_dot_slash(sub->url) ||
-		    starts_with_dot_dot_slash(sub->url)) {
-			url = compute_submodule_clone_url(sub->url);
-			need_free_url = 1;
-		} else
-			url = sub->url;
-	}
-
-	strbuf_reset(&sb);
-	strbuf_addf(&sb, "%s/.git", ce->name);
-	needs_cloning = !file_exists(sb.buf);
-
-	ALLOC_GROW(suc->update_clone, suc->update_clone_nr + 1,
-		   suc->update_clone_alloc);
-	oidcpy(&suc->update_clone[suc->update_clone_nr].oid, &ce->oid);
-	suc->update_clone[suc->update_clone_nr].just_cloned = needs_cloning;
-	suc->update_clone[suc->update_clone_nr].sub = sub;
-	suc->update_clone_nr++;
-
-	if (!needs_cloning)
-		goto cleanup;
-
-	child->git_cmd = 1;
-	child->no_stdin = 1;
-	child->stdout_to_stderr = 1;
-	child->err = -1;
-	strvec_push(&child->args, "submodule--helper");
-	strvec_push(&child->args, "clone");
-	if (suc->progress)
-		strvec_push(&child->args, "--progress");
-	if (suc->quiet)
-		strvec_push(&child->args, "--quiet");
-	if (suc->prefix)
-		strvec_pushl(&child->args, "--prefix", suc->prefix, NULL);
-	if (suc->recommend_shallow && sub->recommend_shallow == 1)
-		strvec_push(&child->args, "--depth=1");
-	if (suc->require_init)
-		strvec_push(&child->args, "--require-init");
-	strvec_pushl(&child->args, "--path", sub->path, NULL);
-	strvec_pushl(&child->args, "--name", sub->name, NULL);
-	strvec_pushl(&child->args, "--url", url, NULL);
-	if (suc->references.nr) {
-		struct string_list_item *item;
-		for_each_string_list_item(item, &suc->references)
-			strvec_pushl(&child->args, "--reference", item->string, NULL);
-	}
-	if (suc->dissociate)
-		strvec_push(&child->args, "--dissociate");
-	if (suc->depth)
-		strvec_push(&child->args, suc->depth);
-	if (suc->single_branch >= 0)
-		strvec_push(&child->args, suc->single_branch ?
-					      "--single-branch" :
-					      "--no-single-branch");
-
-cleanup:
-	strbuf_release(&displaypath_sb);
-	strbuf_release(&sb);
-	if (need_free_url)
-		free((void*)url);
-
-	return needs_cloning;
-}
-
-static int update_clone_get_next_task(struct child_process *child,
-				      struct strbuf *err,
-				      void *suc_cb,
-				      void **idx_task_cb)
-{
-	struct submodule_update_clone *suc = suc_cb;
-	const struct cache_entry *ce;
-	int index;
-
-	for (; suc->current < suc->list.nr; suc->current++) {
-		ce = suc->list.entries[suc->current];
-		if (prepare_to_clone_next_submodule(ce, child, suc, err)) {
-			int *p = xmalloc(sizeof(*p));
-			*p = suc->current;
-			*idx_task_cb = p;
-			suc->current++;
-			return 1;
-		}
-	}
-
-	/*
-	 * The loop above tried cloning each submodule once, now try the
-	 * stragglers again, which we can imagine as an extension of the
-	 * entry list.
-	 */
-	index = suc->current - suc->list.nr;
-	if (index < suc->failed_clones_nr) {
-		int *p;
-		ce = suc->failed_clones[index];
-		if (!prepare_to_clone_next_submodule(ce, child, suc, err)) {
-			suc->current ++;
-			strbuf_addstr(err, "BUG: submodule considered for "
-					   "cloning, doesn't need cloning "
-					   "any more?\n");
-			return 0;
-		}
-		p = xmalloc(sizeof(*p));
-		*p = suc->current;
-		*idx_task_cb = p;
-		suc->current ++;
-		return 1;
-	}
-
-	return 0;
-}
-
-static int update_clone_start_failure(struct strbuf *err,
-				      void *suc_cb,
-				      void *idx_task_cb)
-{
-	struct submodule_update_clone *suc = suc_cb;
-	suc->quickstop = 1;
-	return 1;
-}
-
-static int update_clone_task_finished(int result,
-				      struct strbuf *err,
-				      void *suc_cb,
-				      void *idx_task_cb)
-{
-	const struct cache_entry *ce;
-	struct submodule_update_clone *suc = suc_cb;
-
-	int *idxP = idx_task_cb;
-	int idx = *idxP;
-	free(idxP);
-
-	if (!result)
-		return 0;
-
-	if (idx < suc->list.nr) {
-		ce  = suc->list.entries[idx];
-		strbuf_addf(err, _("Failed to clone '%s'. Retry scheduled"),
-			    ce->name);
-		strbuf_addch(err, '\n');
-		ALLOC_GROW(suc->failed_clones,
-			   suc->failed_clones_nr + 1,
-			   suc->failed_clones_alloc);
-		suc->failed_clones[suc->failed_clones_nr++] = ce;
-		return 0;
-	} else {
-		idx -= suc->list.nr;
-		ce  = suc->failed_clones[idx];
-		strbuf_addf(err, _("Failed to clone '%s' a second time, aborting"),
-			    ce->name);
-		strbuf_addch(err, '\n');
-		suc->quickstop = 1;
-		return 1;
-	}
-
-	return 0;
-}
-
-static int git_update_clone_config(const char *var, const char *value,
-				   void *cb)
-{
-	int *max_jobs = cb;
-	if (!strcmp(var, "submodule.fetchjobs"))
-		*max_jobs = parse_submodule_fetchjobs(var, value);
-	return 0;
-}
-
-static void update_submodule(struct update_clone_data *ucd)
-{
-	fprintf(stdout, "dummy %s %d\t%s\n",
-		oid_to_hex(&ucd->oid),
-		ucd->just_cloned,
-		ucd->sub->path);
-}
-
-static int update_submodules(struct submodule_update_clone *suc)
-{
-	int i;
-
-	run_processes_parallel_tr2(suc->max_jobs, update_clone_get_next_task,
-				   update_clone_start_failure,
-				   update_clone_task_finished, suc, "submodule",
-				   "parallel/update");
-
-	/*
-	 * We saved the output and put it out all at once now.
-	 * That means:
-	 * - the listener does not have to interleave their (checkout)
-	 *   work with our fetching.  The writes involved in a
-	 *   checkout involve more straightforward sequential I/O.
-	 * - the listener can avoid doing any work if fetching failed.
-	 */
-	if (suc->quickstop)
-		return 1;
-
-	for (i = 0; i < suc->update_clone_nr; i++)
-		update_submodule(&suc->update_clone[i]);
-
-	return 0;
-}
-
-static int update_clone(int argc, const char **argv, const char *prefix)
-{
-	const char *update = NULL;
-	struct pathspec pathspec;
-	struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;
-
-	struct option module_update_clone_options[] = {
-		OPT_STRING(0, "prefix", &prefix,
-			   N_("path"),
-			   N_("path into the working tree")),
-		OPT_STRING(0, "recursive-prefix", &suc.recursive_prefix,
-			   N_("path"),
-			   N_("path into the working tree, across nested "
-			      "submodule boundaries")),
-		OPT_STRING(0, "update", &update,
-			   N_("string"),
-			   N_("rebase, merge, checkout or none")),
-		OPT_STRING_LIST(0, "reference", &suc.references, N_("repo"),
-			   N_("reference repository")),
-		OPT_BOOL(0, "dissociate", &suc.dissociate,
-			   N_("use --reference only while cloning")),
-		OPT_STRING(0, "depth", &suc.depth, "<depth>",
-			   N_("Create a shallow clone truncated to the "
-			      "specified number of revisions")),
-		OPT_INTEGER('j', "jobs", &suc.max_jobs,
-			    N_("parallel jobs")),
-		OPT_BOOL(0, "recommend-shallow", &suc.recommend_shallow,
-			    N_("whether the initial clone should follow the shallow recommendation")),
-		OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
-		OPT_BOOL(0, "progress", &suc.progress,
-			    N_("force cloning progress")),
-		OPT_BOOL(0, "require-init", &suc.require_init,
-			   N_("disallow cloning into non-empty directory")),
-		OPT_BOOL(0, "single-branch", &suc.single_branch,
-			 N_("clone only one branch, HEAD or --branch")),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule--helper update-clone [--prefix=<path>] [<path>...]"),
-		NULL
-	};
-	suc.prefix = prefix;
-
-	update_clone_config_from_gitmodules(&suc.max_jobs);
-	git_config(git_update_clone_config, &suc.max_jobs);
-
-	argc = parse_options(argc, argv, prefix, module_update_clone_options,
-			     git_submodule_helper_usage, 0);
-
-	if (update)
-		if (parse_submodule_update_strategy(update, &suc.update) < 0)
-			die(_("bad value for update parameter"));
-
-	if (module_list_compute(argc, argv, prefix, &pathspec, &suc.list) < 0)
-		return 1;
-
-	if (pathspec.nr)
-		suc.warn_if_uninitialized = 1;
-
-	return update_submodules(&suc);
-}
-
-static int resolve_relative_path(int argc, const char **argv, const char *prefix)
-{
-	struct strbuf sb = STRBUF_INIT;
-	if (argc != 3)
-		die("submodule--helper relative-path takes exactly 2 arguments, got %d", argc);
-
-	printf("%s", relative_path(argv[1], argv[2], &sb));
-	strbuf_release(&sb);
-	return 0;
-}
-
-static const char *remote_submodule_branch(const char *path)
-{
-	const struct submodule *sub;
-	const char *branch = NULL;
-	char *key;
-
-	sub = submodule_from_path(the_repository, &null_oid, path);
-	if (!sub)
-		return NULL;
-
-	key = xstrfmt("submodule.%s.branch", sub->name);
-	if (repo_config_get_string_tmp(the_repository, key, &branch))
-		branch = sub->branch;
-	free(key);
-
-	if (!branch)
-		return "HEAD";
-
-	if (!strcmp(branch, ".")) {
-		const char *refname = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
-
-		if (!refname)
-			die(_("No such ref: %s"), "HEAD");
-
-		/* detached HEAD */
-		if (!strcmp(refname, "HEAD"))
-			die(_("Submodule (%s) branch configured to inherit "
-			      "branch from superproject, but the superproject "
-			      "is not on any branch"), sub->name);
-
-		if (!skip_prefix(refname, "refs/heads/", &refname))
-			die(_("Expecting a full ref name, got %s"), refname);
-		return refname;
-	}
-
-	return branch;
-}
-
-static int resolve_remote_submodule_branch(int argc, const char **argv,
-		const char *prefix)
-{
-	const char *ret;
-	struct strbuf sb = STRBUF_INIT;
-	if (argc != 2)
-		die("submodule--helper remote-branch takes exactly one arguments, got %d", argc);
-
-	ret = remote_submodule_branch(argv[1]);
-	if (!ret)
-		die("submodule %s doesn't exist", argv[1]);
-
-	printf("%s", ret);
-	strbuf_release(&sb);
-	return 0;
-}
-
-static int push_check(int argc, const char **argv, const char *prefix)
-{
-	struct remote *remote;
-	const char *superproject_head;
-	char *head;
-	int detached_head = 0;
-	struct object_id head_oid;
-
-	if (argc < 3)
-		die("submodule--helper push-check requires at least 2 arguments");
-
-	/*
-	 * superproject's resolved head ref.
-	 * if HEAD then the superproject is in a detached head state, otherwise
-	 * it will be the resolved head ref.
-	 */
-	superproject_head = argv[1];
-	argv++;
-	argc--;
-	/* Get the submodule's head ref and determine if it is detached */
-	head = resolve_refdup("HEAD", 0, &head_oid, NULL);
-	if (!head)
-		die(_("Failed to resolve HEAD as a valid ref."));
-	if (!strcmp(head, "HEAD"))
-		detached_head = 1;
-
-	/*
-	 * The remote must be configured.
-	 * This is to avoid pushing to the exact same URL as the parent.
-	 */
-	remote = pushremote_get(argv[1]);
-	if (!remote || remote->origin == REMOTE_UNCONFIGURED)
-		die("remote '%s' not configured", argv[1]);
-
-	/* Check the refspec */
-	if (argc > 2) {
-		int i;
-		struct ref *local_refs = get_local_heads();
-		struct refspec refspec = REFSPEC_INIT_PUSH;
-
-		refspec_appendn(&refspec, argv + 2, argc - 2);
-
-		for (i = 0; i < refspec.nr; i++) {
-			const struct refspec_item *rs = &refspec.items[i];
-
-			if (rs->pattern || rs->matching)
-				continue;
-
-			/* LHS must match a single ref */
-			switch (count_refspec_match(rs->src, local_refs, NULL)) {
-			case 1:
-				break;
-			case 0:
-				/*
-				 * If LHS matches 'HEAD' then we need to ensure
-				 * that it matches the same named branch
-				 * checked out in the superproject.
-				 */
-				if (!strcmp(rs->src, "HEAD")) {
-					if (!detached_head &&
-					    !strcmp(head, superproject_head))
-						break;
-					die("HEAD does not match the named branch in the superproject");
-				}
-				/* fallthrough */
-			default:
-				die("src refspec '%s' must name a ref",
-				    rs->src);
-			}
-		}
-		refspec_clear(&refspec);
-	}
-	free(head);
-
-	return 0;
-}
-
-static int ensure_core_worktree(int argc, const char **argv, const char *prefix)
-{
-	const struct submodule *sub;
-	const char *path;
-	const char *cw;
-	struct repository subrepo;
-
-	if (argc != 2)
-		BUG("submodule--helper ensure-core-worktree <path>");
-
-	path = argv[1];
-
-	sub = submodule_from_path(the_repository, &null_oid, path);
-	if (!sub)
-		BUG("We could get the submodule handle before?");
-
-	if (repo_submodule_init(&subrepo, the_repository, sub))
-		die(_("could not get a repository handle for submodule '%s'"), path);
-
-	if (!repo_config_get_string_tmp(&subrepo, "core.worktree", &cw)) {
-		char *cfg_file, *abs_path;
-		const char *rel_path;
-		struct strbuf sb = STRBUF_INIT;
-
-		cfg_file = repo_git_path(&subrepo, "config");
-
-		abs_path = absolute_pathdup(path);
-		rel_path = relative_path(abs_path, subrepo.gitdir, &sb);
-
-		git_config_set_in_file(cfg_file, "core.worktree", rel_path);
-
-		free(cfg_file);
-		free(abs_path);
-		strbuf_release(&sb);
-	}
-
-	return 0;
-}
-
-static int absorb_git_dirs(int argc, const char **argv, const char *prefix)
-{
-	int i;
-	struct pathspec pathspec;
-	struct module_list list = MODULE_LIST_INIT;
-	unsigned flags = ABSORB_GITDIR_RECURSE_SUBMODULES;
-
-	struct option embed_gitdir_options[] = {
-		OPT_STRING(0, "prefix", &prefix,
-			   N_("path"),
-			   N_("path into the working tree")),
-		OPT_BIT(0, "--recursive", &flags, N_("recurse into submodules"),
-			ABSORB_GITDIR_RECURSE_SUBMODULES),
-		OPT_END()
-	};
-
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule--helper absorb-git-dirs [<options>] [<path>...]"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, embed_gitdir_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++)
-		absorb_git_dir_into_superproject(list.entries[i]->name, flags);
-
-	return 0;
-}
-
-static int is_active(int argc, const char **argv, const char *prefix)
-{
-	if (argc != 2)
-		die("submodule--helper is-active takes exactly 1 argument");
-
-	return !is_submodule_active(the_repository, argv[1]);
-}
-
-/*
- * Exit non-zero if any of the submodule names given on the command line is
- * invalid. If no names are given, filter stdin to print only valid names
- * (which is primarily intended for testing).
- */
-static int check_name(int argc, const char **argv, const char *prefix)
-{
-	if (argc > 1) {
-		while (*++argv) {
-			if (check_submodule_name(*argv) < 0)
-				return 1;
-		}
-	} else {
-		struct strbuf buf = STRBUF_INIT;
-		while (strbuf_getline(&buf, stdin) != EOF) {
-			if (!check_submodule_name(buf.buf))
-				printf("%s\n", buf.buf);
-		}
-		strbuf_release(&buf);
-	}
-	return 0;
-}
-
-static int module_config(int argc, const char **argv, const char *prefix)
-{
-	enum {
-		CHECK_WRITEABLE = 1,
-		DO_UNSET = 2
-	} command = 0;
-
-	struct option module_config_options[] = {
-		OPT_CMDMODE(0, "check-writeable", &command,
-			    N_("check if it is safe to write to the .gitmodules file"),
-			    CHECK_WRITEABLE),
-		OPT_CMDMODE(0, "unset", &command,
-			    N_("unset the config in the .gitmodules file"),
-			    DO_UNSET),
-		OPT_END()
-	};
-	const char *const git_submodule_helper_usage[] = {
-		N_("git submodule--helper config <name> [<value>]"),
-		N_("git submodule--helper config --unset <name>"),
-		N_("git submodule--helper config --check-writeable"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, module_config_options,
-			     git_submodule_helper_usage, PARSE_OPT_KEEP_ARGV0);
-
-	if (argc == 1 && command == CHECK_WRITEABLE)
-		return is_writing_gitmodules_ok() ? 0 : -1;
-
-	/* Equivalent to ACTION_GET in builtin/config.c */
-	if (argc == 2 && command != DO_UNSET)
-		return print_config_from_gitmodules(the_repository, argv[1]);
-
-	/* Equivalent to ACTION_SET in builtin/config.c */
-	if (argc == 3 || (argc == 2 && command == DO_UNSET)) {
-		const char *value = (argc == 3) ? argv[2] : NULL;
-
-		if (!is_writing_gitmodules_ok())
-			die(_("please make sure that the .gitmodules file is in the working tree"));
-
-		return config_set_in_gitmodules_file_gently(argv[1], value);
-	}
-
-	usage_with_options(git_submodule_helper_usage, module_config_options);
-}
-
-static int module_set_url(int argc, const char **argv, const char *prefix)
-{
-	int quiet = 0;
-	const char *newurl;
-	const char *path;
-	char *config_name;
-
-	struct option options[] = {
-		OPT__QUIET(&quiet, N_("Suppress output for setting url of a submodule")),
-		OPT_END()
-	};
-	const char *const usage[] = {
-		N_("git submodule--helper set-url [--quiet] <path> <newurl>"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, options, usage, 0);
-
-	if (argc != 2 || !(path = argv[0]) || !(newurl = argv[1]))
-		usage_with_options(usage, options);
-
-	config_name = xstrfmt("submodule.%s.url", path);
-
-	config_set_in_gitmodules_file_gently(config_name, newurl);
-	sync_submodule(path, prefix, quiet ? OPT_QUIET : 0);
-
-	free(config_name);
-
-	return 0;
-}
-
-static int module_set_branch(int argc, const char **argv, const char *prefix)
-{
-	int opt_default = 0, ret;
-	const char *opt_branch = NULL;
-	const char *path;
-	char *config_name;
-
-	/*
-	 * We accept the `quiet` option for uniformity across subcommands,
-	 * though there is nothing to make less verbose in this subcommand.
-	 */
-	struct option options[] = {
-		OPT_NOOP_NOARG('q', "quiet"),
-		OPT_BOOL('d', "default", &opt_default,
-			N_("set the default tracking branch to master")),
-		OPT_STRING('b', "branch", &opt_branch, N_("branch"),
-			N_("set the default tracking branch")),
-		OPT_END()
-	};
-	const char *const usage[] = {
-		N_("git submodule--helper set-branch [-q|--quiet] (-d|--default) <path>"),
-		N_("git submodule--helper set-branch [-q|--quiet] (-b|--branch) <branch> <path>"),
-		NULL
-	};
-
-	argc = parse_options(argc, argv, prefix, options, usage, 0);
-
-	if (!opt_branch && !opt_default)
-		die(_("--branch or --default required"));
-
-	if (opt_branch && opt_default)
-		die(_("--branch and --default are mutually exclusive"));
-
-	if (argc != 1 || !(path = argv[0]))
-		usage_with_options(usage, options);
-
-	config_name = xstrfmt("submodule.%s.branch", path);
-	ret = config_set_in_gitmodules_file_gently(config_name, opt_branch);
-
-	free(config_name);
-	return !!ret;
-}
-
-#define SUPPORT_SUPER_PREFIX (1<<0)
-
-struct cmd_struct {
-	const char *cmd;
-	int (*fn)(int, const char **, const char *);
-	unsigned option;
-};
-
-static struct cmd_struct commands[] = {
-	{"list", module_list, 0},
-	{"name", module_name, 0},
-	{"clone", module_clone, 0},
-	{"update-module-mode", module_update_module_mode, 0},
-	{"update-clone", update_clone, 0},
-	{"ensure-core-worktree", ensure_core_worktree, 0},
-	{"relative-path", resolve_relative_path, 0},
-	{"resolve-relative-url", resolve_relative_url, 0},
-	{"resolve-relative-url-test", resolve_relative_url_test, 0},
-	{"foreach", module_foreach, SUPPORT_SUPER_PREFIX},
-	{"init", module_init, SUPPORT_SUPER_PREFIX},
-	{"status", module_status, SUPPORT_SUPER_PREFIX},
-	{"print-default-remote", print_default_remote, 0},
-	{"sync", module_sync, SUPPORT_SUPER_PREFIX},
-	{"deinit", module_deinit, 0},
-	{"summary", module_summary, SUPPORT_SUPER_PREFIX},
-	{"remote-branch", resolve_remote_submodule_branch, 0},
-	{"push-check", push_check, 0},
-	{"absorb-git-dirs", absorb_git_dirs, SUPPORT_SUPER_PREFIX},
-	{"is-active", is_active, 0},
-	{"check-name", check_name, 0},
-	{"config", module_config, 0},
-	{"set-url", module_set_url, 0},
-	{"set-branch", module_set_branch, 0},
-};
-
-int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
-{
-	int i;
-	if (argc < 2 || !strcmp(argv[1], "-h"))
-		usage("git submodule--helper <command>");
-
-	for (i = 0; i < ARRAY_SIZE(commands); i++) {
-		if (!strcmp(argv[1], commands[i].cmd)) {
-			if (get_super_prefix() &&
-			    !(commands[i].option & SUPPORT_SUPER_PREFIX))
-				die(_("%s doesn't support --super-prefix"),
-				    commands[i].cmd);
-			return commands[i].fn(argc - 1, argv + 1, prefix);
-		}
-	}
-
-	die(_("'%s' is not a valid submodule--helper "
-	      "subcommand"), argv[1]);
-}