builtin/commit-graph.c - git - Git at Google

 #define USE_THE_REPOSITORY_VARIABLE
 #include "builtin.h"
 #include "commit.h"
 #include "config.h"
 #include "gettext.h"
 #include "hex.h"
 #include "parse-options.h"
 #include "commit-graph.h"
 #include "object-store-ll.h"
 #include "progress.h"
 #include "replace-object.h"
 #include "strbuf.h"
 #include "tag.h"
 #include "trace2.h"

 #define BUILTIN_COMMIT_GRAPH_VERIFY_USAGE \
 	N_("git commit-graph verify [--object-dir <dir>] [--shallow] [--[no-]progress]")

 #define BUILTIN_COMMIT_GRAPH_WRITE_USAGE \
 	N_("git commit-graph write [--object-dir <dir>] [--append]\n" \
 	   "                       [--split[=<strategy>]] [--reachable | --stdin-packs | --stdin-commits]\n" \
 	   "                       [--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress]\n" \
 	   "                       <split-options>")

 static const char * builtin_commit_graph_verify_usage[] = {
 	BUILTIN_COMMIT_GRAPH_VERIFY_USAGE,
 	NULL
 };

 static const char * builtin_commit_graph_write_usage[] = {
 	BUILTIN_COMMIT_GRAPH_WRITE_USAGE,
 	NULL
 };

 static char const * const builtin_commit_graph_usage[] = {
 	BUILTIN_COMMIT_GRAPH_VERIFY_USAGE,
 	BUILTIN_COMMIT_GRAPH_WRITE_USAGE,
 	NULL,
 };

 static struct opts_commit_graph {
 	const char *obj_dir;
 	int reachable;
 	int stdin_packs;
 	int stdin_commits;
 	int append;
 	int split;
 	int shallow;
 	int progress;
 	int enable_changed_paths;
 } opts;

 static struct option common_opts[] = {
 	OPT_STRING(0, "object-dir", &opts.obj_dir,
 		   N_("dir"),
 		   N_("the object directory to store the graph")),
 	OPT_END()
 };

 static struct option *add_common_options(struct option *to)
 {
 	return parse_options_concat(common_opts, to);
 }

 static int graph_verify(int argc, const char **argv, const char *prefix,
 			struct repository *repo UNUSED)
 {
 	struct commit_graph *graph = NULL;
 	struct object_directory *odb = NULL;
 	char *graph_name;
 	char *chain_name;
 	enum { OPENED_NONE, OPENED_GRAPH, OPENED_CHAIN } opened = OPENED_NONE;
 	int fd;
 	struct stat st;
 	int flags = 0;
 	int incomplete_chain = 0;
 	int ret;

 	static struct option builtin_commit_graph_verify_options[] = {
 		OPT_BOOL(0, "shallow", &opts.shallow,
 			 N_("if the commit-graph is split, only verify the tip file")),
 		OPT_BOOL(0, "progress", &opts.progress,
 			 N_("force progress reporting")),
 		OPT_END(),
 	};
 	struct option *options = add_common_options(builtin_commit_graph_verify_options);

 	trace2_cmd_mode("verify");

 	opts.progress = isatty(2);
 	argc = parse_options(argc, argv, prefix,
 			     options,
 			     builtin_commit_graph_verify_usage, 0);
 	if (argc)
 		usage_with_options(builtin_commit_graph_verify_usage, options);

 	if (!opts.obj_dir)
 		opts.obj_dir = repo_get_object_directory(the_repository);
 	if (opts.shallow)
 		flags |= COMMIT_GRAPH_VERIFY_SHALLOW;
 	if (opts.progress)
 		flags |= COMMIT_GRAPH_WRITE_PROGRESS;

 	odb = find_odb(the_repository, opts.obj_dir);
 	graph_name = get_commit_graph_filename(odb);
 	chain_name = get_commit_graph_chain_filename(odb);
 	if (open_commit_graph(graph_name, &fd, &st))
 		opened = OPENED_GRAPH;
 	else if (errno != ENOENT)
 		die_errno(_("Could not open commit-graph '%s'"), graph_name);
 	else if (open_commit_graph_chain(chain_name, &fd, &st))
 		opened = OPENED_CHAIN;
 	else if (errno != ENOENT)
 		die_errno(_("could not open commit-graph chain '%s'"), chain_name);

 	FREE_AND_NULL(graph_name);
 	FREE_AND_NULL(chain_name);
 	FREE_AND_NULL(options);

 	if (opened == OPENED_NONE)
 		return 0;
 	else if (opened == OPENED_GRAPH)
 		graph = load_commit_graph_one_fd_st(the_repository, fd, &st, odb);
 	else
 		graph = load_commit_graph_chain_fd_st(the_repository, fd, &st,
 						      &incomplete_chain);

 	if (!graph)
 		return 1;

 	ret = verify_commit_graph(the_repository, graph, flags);
 	free_commit_graph(graph);

 	if (incomplete_chain) {
 		error("one or more commit-graph chain files could not be loaded");
 		ret |= 1;
 	}

 	return ret;
 }

 extern int read_replace_refs;
 static struct commit_graph_opts write_opts;

 static int write_option_parse_split(const struct option *opt, const char *arg,
 				    int unset)
 {
 	enum commit_graph_split_flags *flags = opt->value;

 	BUG_ON_OPT_NEG(unset);

 	opts.split = 1;
 	if (!arg)
 		return 0;

 	if (!strcmp(arg, "no-merge"))
 		*flags = COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED;
 	else if (!strcmp(arg, "replace"))
 		*flags = COMMIT_GRAPH_SPLIT_REPLACE;
 	else
 		die(_("unrecognized --split argument, %s"), arg);

 	return 0;
 }

 static int read_one_commit(struct oidset *commits, struct progress *progress,
 			   const char *hash)
 {
 	struct object *result;
 	struct object_id oid;
 	const char *end;

 	if (parse_oid_hex(hash, &oid, &end))
 		return error(_("unexpected non-hex object ID: %s"), hash);

 	result = deref_tag(the_repository, parse_object(the_repository, &oid),
 			   NULL, 0);
 	if (!result)
 		return error(_("invalid object: %s"), hash);
 	else if (object_as_type(result, OBJ_COMMIT, 1))
 		oidset_insert(commits, &result->oid);

 	display_progress(progress, oidset_size(commits));

 	return 0;
 }

 static int write_option_max_new_filters(const struct option *opt,
 					const char *arg,
 					int unset)
 {
 	int *to = opt->value;
 	if (unset)
 		*to = -1;
 	else {
 		const char *s;
 		*to = strtol(arg, (char **)&s, 10);
 		if (*s)
 			return error(_("option `%s' expects a numerical value"),
 				     "max-new-filters");
 	}
 	return 0;
 }

 static int git_commit_graph_write_config(const char *var, const char *value,
 					 const struct config_context *ctx,
 					 void *cb UNUSED)
 {
 	if (!strcmp(var, "commitgraph.maxnewfilters"))
 		write_opts.max_new_filters = git_config_int(var, value, ctx->kvi);
 	/*
 	 * No need to fall-back to 'git_default_config', since this was already
 	 * called in 'cmd_commit_graph()'.
 	 */
 	return 0;
 }

 static int graph_write(int argc, const char **argv, const char *prefix,
 		       struct repository *repo UNUSED)
 {
 	struct string_list pack_indexes = STRING_LIST_INIT_DUP;
 	struct strbuf buf = STRBUF_INIT;
 	struct oidset commits = OIDSET_INIT;
 	struct object_directory *odb = NULL;
 	int result = 0;
 	enum commit_graph_write_flags flags = 0;
 	struct progress *progress = NULL;

 	static struct option builtin_commit_graph_write_options[] = {
 		OPT_BOOL(0, "reachable", &opts.reachable,
 			N_("start walk at all refs")),
 		OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
 			N_("scan pack-indexes listed by stdin for commits")),
 		OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
 			N_("start walk at commits listed by stdin")),
 		OPT_BOOL(0, "append", &opts.append,
 			N_("include all commits already in the commit-graph file")),
 		OPT_BOOL(0, "changed-paths", &opts.enable_changed_paths,
 			N_("enable computation for changed paths")),
 		OPT_CALLBACK_F(0, "split", &write_opts.split_flags, NULL,
 			N_("allow writing an incremental commit-graph file"),
 			PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
 			write_option_parse_split),
 		OPT_INTEGER(0, "max-commits", &write_opts.max_commits,
 			N_("maximum number of commits in a non-base split commit-graph")),
 		OPT_INTEGER(0, "size-multiple", &write_opts.size_multiple,
 			N_("maximum ratio between two levels of a split commit-graph")),
 		OPT_EXPIRY_DATE(0, "expire-time", &write_opts.expire_time,
 			N_("only expire files older than a given date-time")),
 		OPT_CALLBACK_F(0, "max-new-filters", &write_opts.max_new_filters,
 			NULL, N_("maximum number of changed-path Bloom filters to compute"),
 			0, write_option_max_new_filters),
 		OPT_BOOL(0, "progress", &opts.progress,
 			 N_("force progress reporting")),
 		OPT_END(),
 	};
 	struct option *options = add_common_options(builtin_commit_graph_write_options);

 	opts.progress = isatty(2);
 	opts.enable_changed_paths = -1;
 	write_opts.size_multiple = 2;
 	write_opts.max_commits = 0;
 	write_opts.expire_time = 0;
 	write_opts.max_new_filters = -1;

 	trace2_cmd_mode("write");

 	git_config(git_commit_graph_write_config, &opts);

 	argc = parse_options(argc, argv, prefix,
 			     options,
 			     builtin_commit_graph_write_usage, 0);
 	if (argc)
 		usage_with_options(builtin_commit_graph_write_usage, options);

 	if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
 		die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
 	if (!opts.obj_dir)
 		opts.obj_dir = repo_get_object_directory(the_repository);
 	if (opts.append)
 		flags |= COMMIT_GRAPH_WRITE_APPEND;
 	if (opts.split)
 		flags |= COMMIT_GRAPH_WRITE_SPLIT;
 	if (opts.progress)
 		flags |= COMMIT_GRAPH_WRITE_PROGRESS;
 	if (!opts.enable_changed_paths)
 		flags |= COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS;
 	if (opts.enable_changed_paths == 1 ||
 	    git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0))
 		flags |= COMMIT_GRAPH_WRITE_BLOOM_FILTERS;

 	odb = find_odb(the_repository, opts.obj_dir);

 	if (opts.reachable) {
 		if (write_commit_graph_reachable(odb, flags, &write_opts))
 			result = 1;
 		goto cleanup;
 	}

 	if (opts.stdin_packs) {
 		while (strbuf_getline(&buf, stdin) != EOF)
 			string_list_append_nodup(&pack_indexes,
 						 strbuf_detach(&buf, NULL));
 	} else if (opts.stdin_commits) {
 		oidset_init(&commits, 0);
 		if (opts.progress)
 			progress = start_delayed_progress(
 				the_repository,
 				_("Collecting commits from input"), 0);

 		while (strbuf_getline(&buf, stdin) != EOF) {
 			if (read_one_commit(&commits, progress, buf.buf)) {
 				result = 1;
 				goto cleanup;
 			}
 		}

 		stop_progress(&progress);
 	}

 	if (write_commit_graph(odb,
 			       opts.stdin_packs ? &pack_indexes : NULL,
 			       opts.stdin_commits ? &commits : NULL,
 			       flags,
 			       &write_opts))
 		result = 1;

 cleanup:
 	FREE_AND_NULL(options);
 	string_list_clear(&pack_indexes, 0);
 	strbuf_release(&buf);
 	oidset_clear(&commits);
 	return result;
 }

 int cmd_commit_graph(int argc,
 		     const char **argv,
 		     const char *prefix,
 		     struct repository *repo)
 {
 	parse_opt_subcommand_fn *fn = NULL;
 	struct option builtin_commit_graph_options[] = {
 		OPT_SUBCOMMAND("verify", &fn, graph_verify),
 		OPT_SUBCOMMAND("write", &fn, graph_write),
 		OPT_END(),
 	};
 	struct option *options = parse_options_concat(builtin_commit_graph_options, common_opts);

 	git_config(git_default_config, NULL);

 	disable_replace_refs();
 	save_commit_buffer = 0;

 	argc = parse_options(argc, argv, prefix, options,
 			     builtin_commit_graph_usage, 0);
 	FREE_AND_NULL(options);

 	return fn(argc, argv, prefix, repo);
 }
	#define USE_THE_REPOSITORY_VARIABLE
	#include "builtin.h"
	#include "commit.h"
	#include "config.h"
	#include "gettext.h"
	#include "hex.h"
	#include "parse-options.h"
	#include "commit-graph.h"
	#include "object-store-ll.h"
	#include "progress.h"
	#include "replace-object.h"
	#include "strbuf.h"
	#include "tag.h"
	#include "trace2.h"

	#define BUILTIN_COMMIT_GRAPH_VERIFY_USAGE \
	N_("git commit-graph verify [--object-dir <dir>] [--shallow] [--[no-]progress]")

	#define BUILTIN_COMMIT_GRAPH_WRITE_USAGE \
	N_("git commit-graph write [--object-dir <dir>] [--append]\n" \
	" [--split[=<strategy>]] [--reachable \| --stdin-packs \| --stdin-commits]\n" \
	" [--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress]\n" \
	" <split-options>")

	static const char * builtin_commit_graph_verify_usage[] = {
	BUILTIN_COMMIT_GRAPH_VERIFY_USAGE,
	NULL
	};

	static const char * builtin_commit_graph_write_usage[] = {
	BUILTIN_COMMIT_GRAPH_WRITE_USAGE,
	NULL
	};

	static char const * const builtin_commit_graph_usage[] = {
	BUILTIN_COMMIT_GRAPH_VERIFY_USAGE,
	BUILTIN_COMMIT_GRAPH_WRITE_USAGE,
	NULL,
	};

	static struct opts_commit_graph {
	const char *obj_dir;
	int reachable;
	int stdin_packs;
	int stdin_commits;
	int append;
	int split;
	int shallow;
	int progress;
	int enable_changed_paths;
	} opts;

	static struct option common_opts[] = {
	OPT_STRING(0, "object-dir", &opts.obj_dir,
	N_("dir"),
	N_("the object directory to store the graph")),
	OPT_END()
	};

	static struct option add_common_options(struct option to)
	{
	return parse_options_concat(common_opts, to);
	}

	static int graph_verify(int argc, const char *argv, const char prefix,
	struct repository *repo UNUSED)
	{
	struct commit_graph *graph = NULL;
	struct object_directory *odb = NULL;
	char *graph_name;
	char *chain_name;
	enum { OPENED_NONE, OPENED_GRAPH, OPENED_CHAIN } opened = OPENED_NONE;
	int fd;
	struct stat st;
	int flags = 0;
	int incomplete_chain = 0;
	int ret;

	static struct option builtin_commit_graph_verify_options[] = {
	OPT_BOOL(0, "shallow", &opts.shallow,
	N_("if the commit-graph is split, only verify the tip file")),
	OPT_BOOL(0, "progress", &opts.progress,
	N_("force progress reporting")),
	OPT_END(),
	};
	struct option *options = add_common_options(builtin_commit_graph_verify_options);

	trace2_cmd_mode("verify");

	opts.progress = isatty(2);
	argc = parse_options(argc, argv, prefix,
	options,
	builtin_commit_graph_verify_usage, 0);
	if (argc)
	usage_with_options(builtin_commit_graph_verify_usage, options);

	if (!opts.obj_dir)
	opts.obj_dir = repo_get_object_directory(the_repository);
	if (opts.shallow)
	flags \|= COMMIT_GRAPH_VERIFY_SHALLOW;
	if (opts.progress)
	flags \|= COMMIT_GRAPH_WRITE_PROGRESS;

	odb = find_odb(the_repository, opts.obj_dir);
	graph_name = get_commit_graph_filename(odb);
	chain_name = get_commit_graph_chain_filename(odb);
	if (open_commit_graph(graph_name, &fd, &st))
	opened = OPENED_GRAPH;
	else if (errno != ENOENT)
	die_errno(_("Could not open commit-graph '%s'"), graph_name);
	else if (open_commit_graph_chain(chain_name, &fd, &st))
	opened = OPENED_CHAIN;
	else if (errno != ENOENT)
	die_errno(_("could not open commit-graph chain '%s'"), chain_name);

	FREE_AND_NULL(graph_name);
	FREE_AND_NULL(chain_name);
	FREE_AND_NULL(options);

	if (opened == OPENED_NONE)
	return 0;
	else if (opened == OPENED_GRAPH)
	graph = load_commit_graph_one_fd_st(the_repository, fd, &st, odb);
	else
	graph = load_commit_graph_chain_fd_st(the_repository, fd, &st,
	&incomplete_chain);

	if (!graph)
	return 1;

	ret = verify_commit_graph(the_repository, graph, flags);
	free_commit_graph(graph);

	if (incomplete_chain) {
	error("one or more commit-graph chain files could not be loaded");
	ret \|= 1;
	}

	return ret;
	}

	extern int read_replace_refs;
	static struct commit_graph_opts write_opts;

	static int write_option_parse_split(const struct option opt, const char arg,
	int unset)
	{
	enum commit_graph_split_flags *flags = opt->value;

	BUG_ON_OPT_NEG(unset);

	opts.split = 1;
	if (!arg)
	return 0;

	if (!strcmp(arg, "no-merge"))
	*flags = COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED;
	else if (!strcmp(arg, "replace"))
	*flags = COMMIT_GRAPH_SPLIT_REPLACE;
	else
	die(_("unrecognized --split argument, %s"), arg);

	return 0;
	}

	static int read_one_commit(struct oidset commits, struct progress progress,
	const char *hash)
	{
	struct object *result;
	struct object_id oid;
	const char *end;

	if (parse_oid_hex(hash, &oid, &end))
	return error(_("unexpected non-hex object ID: %s"), hash);

	result = deref_tag(the_repository, parse_object(the_repository, &oid),
	NULL, 0);
	if (!result)
	return error(_("invalid object: %s"), hash);
	else if (object_as_type(result, OBJ_COMMIT, 1))
	oidset_insert(commits, &result->oid);

	display_progress(progress, oidset_size(commits));

	return 0;
	}

	static int write_option_max_new_filters(const struct option *opt,
	const char *arg,
	int unset)
	{
	int *to = opt->value;
	if (unset)
	*to = -1;
	else {
	const char *s;
	to = strtol(arg, (char *)&s, 10);
	if (*s)
	return error(_("option `%s' expects a numerical value"),
	"max-new-filters");
	}
	return 0;
	}

	static int git_commit_graph_write_config(const char var, const char value,
	const struct config_context *ctx,
	void *cb UNUSED)
	{
	if (!strcmp(var, "commitgraph.maxnewfilters"))
	write_opts.max_new_filters = git_config_int(var, value, ctx->kvi);
	/*
	* No need to fall-back to 'git_default_config', since this was already
	* called in 'cmd_commit_graph()'.
	*/
	return 0;
	}

	static int graph_write(int argc, const char *argv, const char prefix,
	struct repository *repo UNUSED)
	{
	struct string_list pack_indexes = STRING_LIST_INIT_DUP;
	struct strbuf buf = STRBUF_INIT;
	struct oidset commits = OIDSET_INIT;
	struct object_directory *odb = NULL;
	int result = 0;
	enum commit_graph_write_flags flags = 0;
	struct progress *progress = NULL;

	static struct option builtin_commit_graph_write_options[] = {
	OPT_BOOL(0, "reachable", &opts.reachable,
	N_("start walk at all refs")),
	OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
	N_("scan pack-indexes listed by stdin for commits")),
	OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
	N_("start walk at commits listed by stdin")),
	OPT_BOOL(0, "append", &opts.append,
	N_("include all commits already in the commit-graph file")),
	OPT_BOOL(0, "changed-paths", &opts.enable_changed_paths,
	N_("enable computation for changed paths")),
	OPT_CALLBACK_F(0, "split", &write_opts.split_flags, NULL,
	N_("allow writing an incremental commit-graph file"),
	PARSE_OPT_OPTARG \| PARSE_OPT_NONEG,
	write_option_parse_split),
	OPT_INTEGER(0, "max-commits", &write_opts.max_commits,
	N_("maximum number of commits in a non-base split commit-graph")),
	OPT_INTEGER(0, "size-multiple", &write_opts.size_multiple,
	N_("maximum ratio between two levels of a split commit-graph")),
	OPT_EXPIRY_DATE(0, "expire-time", &write_opts.expire_time,
	N_("only expire files older than a given date-time")),
	OPT_CALLBACK_F(0, "max-new-filters", &write_opts.max_new_filters,
	NULL, N_("maximum number of changed-path Bloom filters to compute"),
	0, write_option_max_new_filters),
	OPT_BOOL(0, "progress", &opts.progress,
	N_("force progress reporting")),
	OPT_END(),
	};
	struct option *options = add_common_options(builtin_commit_graph_write_options);

	opts.progress = isatty(2);
	opts.enable_changed_paths = -1;
	write_opts.size_multiple = 2;
	write_opts.max_commits = 0;
	write_opts.expire_time = 0;
	write_opts.max_new_filters = -1;

	trace2_cmd_mode("write");

	git_config(git_commit_graph_write_config, &opts);

	argc = parse_options(argc, argv, prefix,
	options,
	builtin_commit_graph_write_usage, 0);
	if (argc)
	usage_with_options(builtin_commit_graph_write_usage, options);

	if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
	die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
	if (!opts.obj_dir)
	opts.obj_dir = repo_get_object_directory(the_repository);
	if (opts.append)
	flags \|= COMMIT_GRAPH_WRITE_APPEND;
	if (opts.split)
	flags \|= COMMIT_GRAPH_WRITE_SPLIT;
	if (opts.progress)
	flags \|= COMMIT_GRAPH_WRITE_PROGRESS;
	if (!opts.enable_changed_paths)
	flags \|= COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS;
	if (opts.enable_changed_paths == 1 \|\|
	git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0))
	flags \|= COMMIT_GRAPH_WRITE_BLOOM_FILTERS;

	odb = find_odb(the_repository, opts.obj_dir);

	if (opts.reachable) {
	if (write_commit_graph_reachable(odb, flags, &write_opts))
	result = 1;
	goto cleanup;
	}

	if (opts.stdin_packs) {
	while (strbuf_getline(&buf, stdin) != EOF)
	string_list_append_nodup(&pack_indexes,
	strbuf_detach(&buf, NULL));
	} else if (opts.stdin_commits) {
	oidset_init(&commits, 0);
	if (opts.progress)
	progress = start_delayed_progress(
	the_repository,
	_("Collecting commits from input"), 0);

	while (strbuf_getline(&buf, stdin) != EOF) {
	if (read_one_commit(&commits, progress, buf.buf)) {
	result = 1;
	goto cleanup;
	}
	}

	stop_progress(&progress);
	}

	if (write_commit_graph(odb,
	opts.stdin_packs ? &pack_indexes : NULL,
	opts.stdin_commits ? &commits : NULL,
	flags,
	&write_opts))
	result = 1;

	cleanup:
	FREE_AND_NULL(options);
	string_list_clear(&pack_indexes, 0);
	strbuf_release(&buf);
	oidset_clear(&commits);
	return result;
	}

	int cmd_commit_graph(int argc,
	const char **argv,
	const char *prefix,
	struct repository *repo)
	{
	parse_opt_subcommand_fn *fn = NULL;
	struct option builtin_commit_graph_options[] = {
	OPT_SUBCOMMAND("verify", &fn, graph_verify),
	OPT_SUBCOMMAND("write", &fn, graph_write),
	OPT_END(),
	};
	struct option *options = parse_options_concat(builtin_commit_graph_options, common_opts);

	git_config(git_default_config, NULL);

	disable_replace_refs();
	save_commit_buffer = 0;

	argc = parse_options(argc, argv, prefix, options,
	builtin_commit_graph_usage, 0);
	FREE_AND_NULL(options);

	return fn(argc, argv, prefix, repo);
	}