[thirdparty/git.git] / git.c

#include "builtin.h"
#include "exec_cmd.h"
#include "cache.h"
#include "quote.h"
#include "run-command.h"

const char git_usage_string[] =
	"git [--version] [--exec-path[=GIT_EXEC_PATH]] [--html-path]\n"
	"           [-p|--paginate|--no-pager] [--no-replace-objects]\n"
	"           [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE]\n"
	"           [-c name=value] [--help]\n"
	"           COMMAND [ARGS]";

const char git_more_info_string[] =
	"See 'git help COMMAND' for more information on a specific command.";

static struct startup_info git_startup_info;
static int use_pager = -1;
struct pager_config {
	const char *cmd;
	int val;
};

static int pager_command_config(const char *var, const char *value, void *data)
{
	struct pager_config *c = data;
	if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd))
		c->val = git_config_bool(var, value);
	return 0;
}

/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
int check_pager_config(const char *cmd)
{
	struct pager_config c;
	c.cmd = cmd;
	c.val = -1;
	git_config(pager_command_config, &c);
	return c.val;
}

static void commit_pager_choice(void) {
	switch (use_pager) {
	case 0:
		setenv("GIT_PAGER", "cat", 1);
		break;
	case 1:
		setup_pager();
		break;
	default:
		break;
	}
}

static int handle_options(const char ***argv, int *argc, int *envchanged)
{
	int handled = 0;

	if (!getenv("GIT_ASKPASS") && getenv("SSH_ASKPASS"))
		setenv("GIT_ASKPASS", getenv("SSH_ASKPASS"), 1);

	while (*argc > 0) {
		const char *cmd = (*argv)[0];
		if (cmd[0] != '-')
			break;

		/*
		 * For legacy reasons, the "version" and "help"
		 * commands can be written with "--" prepended
		 * to make them look like flags.
		 */
		if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version"))
			break;

		/*
		 * Check remaining flags.
		 */
		if (!prefixcmp(cmd, "--exec-path")) {
			cmd += 11;
			if (*cmd == '=')
				git_set_argv_exec_path(cmd + 1);
			else {
				puts(git_exec_path());
				exit(0);
			}
		} else if (!strcmp(cmd, "--html-path")) {
			puts(system_path(GIT_HTML_PATH));
			exit(0);
		} else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
			use_pager = 1;
		} else if (!strcmp(cmd, "--no-pager")) {
			use_pager = 0;
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--no-replace-objects")) {
			read_replace_refs = 0;
			setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--git-dir")) {
			if (*argc < 2) {
				fprintf(stderr, "No directory given for --git-dir.\n" );
				usage(git_usage_string);
			}
			setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
			if (envchanged)
				*envchanged = 1;
			(*argv)++;
			(*argc)--;
			handled++;
		} else if (!prefixcmp(cmd, "--git-dir=")) {
			setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--work-tree")) {
			if (*argc < 2) {
				fprintf(stderr, "No directory given for --work-tree.\n" );
				usage(git_usage_string);
			}
			setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
			if (envchanged)
				*envchanged = 1;
			(*argv)++;
			(*argc)--;
		} else if (!prefixcmp(cmd, "--work-tree=")) {
			setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "--bare")) {
			static char git_dir[PATH_MAX+1];
			is_bare_repository_cfg = 1;
			setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0);
			if (envchanged)
				*envchanged = 1;
		} else if (!strcmp(cmd, "-c")) {
			if (*argc < 2) {
				fprintf(stderr, "-c expects a configuration string\n" );
				usage(git_usage_string);
			}
			git_config_parse_parameter((*argv)[1]);
			(*argv)++;
			(*argc)--;
		} else {
			fprintf(stderr, "Unknown option: %s\n", cmd);
			usage(git_usage_string);
		}

		(*argv)++;
		(*argc)--;
		handled++;
	}
	return handled;
}

static int handle_alias(int *argcp, const char ***argv)
{
	int envchanged = 0, ret = 0, saved_errno = errno;
	const char *subdir;
	int count, option_count;
	const char **new_argv;
	const char *alias_command;
	char *alias_string;
	int unused_nongit;

	subdir = setup_git_directory_gently(&unused_nongit);

	alias_command = (*argv)[0];
	alias_string = alias_lookup(alias_command);
	if (alias_string) {
		if (alias_string[0] == '!') {
			commit_pager_choice();
			if (*argcp > 1) {
				struct strbuf buf;

				strbuf_init(&buf, PATH_MAX);
				strbuf_addstr(&buf, alias_string);
				sq_quote_argv(&buf, (*argv) + 1, PATH_MAX);
				free(alias_string);
				alias_string = buf.buf;
			}
			trace_printf("trace: alias to shell cmd: %s => %s\n",
				     alias_command, alias_string + 1);
			ret = system(alias_string + 1);
			if (ret >= 0 && WIFEXITED(ret) &&
			    WEXITSTATUS(ret) != 127)
				exit(WEXITSTATUS(ret));
			die("Failed to run '%s' when expanding alias '%s'",
			    alias_string + 1, alias_command);
		}
		count = split_cmdline(alias_string, &new_argv);
		if (count < 0)
			die("Bad alias.%s string: %s", alias_command,
			    split_cmdline_strerror(count));
		option_count = handle_options(&new_argv, &count, &envchanged);
		if (envchanged)
			die("alias '%s' changes environment variables\n"
				 "You can use '!git' in the alias to do this.",
				 alias_command);
		memmove(new_argv - option_count, new_argv,
				count * sizeof(char *));
		new_argv -= option_count;

		if (count < 1)
			die("empty alias for %s", alias_command);

		if (!strcmp(alias_command, new_argv[0]))
			die("recursive alias: %s", alias_command);

		trace_argv_printf(new_argv,
				  "trace: alias expansion: %s =>",
				  alias_command);

		new_argv = xrealloc(new_argv, sizeof(char *) *
				    (count + *argcp));
		/* insert after command name */
		memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp);

		*argv = new_argv;
		*argcp += count - 1;

		ret = 1;
	}

	if (subdir && chdir(subdir))
		die_errno("Cannot change to '%s'", subdir);

	errno = saved_errno;

	return ret;
}

const char git_version_string[] = GIT_VERSION;

#define RUN_SETUP		(1<<0)
#define RUN_SETUP_GENTLY	(1<<1)
#define USE_PAGER		(1<<2)
/*
 * require working tree to be present -- anything uses this needs
 * RUN_SETUP for reading from the configuration file.
 */
#define NEED_WORK_TREE		(1<<3)

struct cmd_struct {
	const char *cmd;
	int (*fn)(int, const char **, const char *);
	int option;
};

static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
{
	int status, help;
	struct stat st;
	const char *prefix;

	prefix = NULL;
	help = argc == 2 && !strcmp(argv[1], "-h");
	if (!help) {
		if (p->option & RUN_SETUP)
			prefix = setup_git_directory();
		if (p->option & RUN_SETUP_GENTLY) {
			int nongit_ok;
			prefix = setup_git_directory_gently(&nongit_ok);
		}

		if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY))
			use_pager = check_pager_config(p->cmd);
		if (use_pager == -1 && p->option & USE_PAGER)
			use_pager = 1;
	}
	commit_pager_choice();

	if (!help && p->option & NEED_WORK_TREE)
		setup_work_tree();

	trace_argv_printf(argv, "trace: built-in: git");

	status = p->fn(argc, argv, prefix);
	if (status)
		return status;

	/* Somebody closed stdout? */
	if (fstat(fileno(stdout), &st))
		return 0;
	/* Ignore write errors for pipes and sockets.. */
	if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode))
		return 0;

	/* Check for ENOSPC and EIO errors.. */
	if (fflush(stdout))
		die_errno("write failure on standard output");
	if (ferror(stdout))
		die("unknown write failure on standard output");
	if (fclose(stdout))
		die_errno("close failed on standard output");
	return 0;
}

static void handle_internal_command(int argc, const char **argv)
{
	const char *cmd = argv[0];
	static struct cmd_struct commands[] = {
		{ "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
		{ "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
		{ "annotate", cmd_annotate, RUN_SETUP },
		{ "apply", cmd_apply, RUN_SETUP_GENTLY },
		{ "archive", cmd_archive },
		{ "bisect--helper", cmd_bisect__helper, RUN_SETUP | NEED_WORK_TREE },
		{ "blame", cmd_blame, RUN_SETUP },
		{ "branch", cmd_branch, RUN_SETUP },
		{ "bundle", cmd_bundle, RUN_SETUP_GENTLY },
		{ "cat-file", cmd_cat_file, RUN_SETUP },
		{ "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
		{ "checkout-index", cmd_checkout_index,
			RUN_SETUP | NEED_WORK_TREE},
		{ "check-ref-format", cmd_check_ref_format },
		{ "check-attr", cmd_check_attr, RUN_SETUP },
		{ "cherry", cmd_cherry, RUN_SETUP },
		{ "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE },
		{ "clone", cmd_clone },
		{ "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE },
		{ "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE },
		{ "commit-tree", cmd_commit_tree, RUN_SETUP },
		{ "config", cmd_config, RUN_SETUP_GENTLY },
		{ "count-objects", cmd_count_objects, RUN_SETUP },
		{ "describe", cmd_describe, RUN_SETUP },
		{ "diff", cmd_diff },
		{ "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE },
		{ "diff-index", cmd_diff_index, RUN_SETUP },
		{ "diff-tree", cmd_diff_tree, RUN_SETUP },
		{ "fast-export", cmd_fast_export, RUN_SETUP },
		{ "fetch", cmd_fetch, RUN_SETUP },
		{ "fetch-pack", cmd_fetch_pack, RUN_SETUP },
		{ "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
		{ "for-each-ref", cmd_for_each_ref, RUN_SETUP },
		{ "format-patch", cmd_format_patch, RUN_SETUP },
		{ "fsck", cmd_fsck, RUN_SETUP },
		{ "fsck-objects", cmd_fsck, RUN_SETUP },
		{ "gc", cmd_gc, RUN_SETUP },
		{ "get-tar-commit-id", cmd_get_tar_commit_id },
		{ "grep", cmd_grep, RUN_SETUP_GENTLY },
		{ "hash-object", cmd_hash_object },
		{ "help", cmd_help },
		{ "index-pack", cmd_index_pack, RUN_SETUP_GENTLY },
		{ "init", cmd_init_db },
		{ "init-db", cmd_init_db },
		{ "log", cmd_log, RUN_SETUP },
		{ "ls-files", cmd_ls_files, RUN_SETUP },
		{ "ls-tree", cmd_ls_tree, RUN_SETUP },
		{ "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
		{ "mailinfo", cmd_mailinfo },
		{ "mailsplit", cmd_mailsplit },
		{ "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
		{ "merge-base", cmd_merge_base, RUN_SETUP },
		{ "merge-file", cmd_merge_file, RUN_SETUP_GENTLY },
		{ "merge-index", cmd_merge_index, RUN_SETUP },
		{ "merge-ours", cmd_merge_ours, RUN_SETUP },
		{ "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
		{ "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
		{ "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
		{ "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
		{ "merge-tree", cmd_merge_tree, RUN_SETUP },
		{ "mktag", cmd_mktag, RUN_SETUP },
		{ "mktree", cmd_mktree, RUN_SETUP },
		{ "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
		{ "name-rev", cmd_name_rev, RUN_SETUP },
		{ "notes", cmd_notes, RUN_SETUP },
		{ "pack-objects", cmd_pack_objects, RUN_SETUP },
		{ "pack-redundant", cmd_pack_redundant, RUN_SETUP },
		{ "patch-id", cmd_patch_id },
		{ "peek-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
		{ "pickaxe", cmd_blame, RUN_SETUP },
		{ "prune", cmd_prune, RUN_SETUP },
		{ "prune-packed", cmd_prune_packed, RUN_SETUP },
		{ "push", cmd_push, RUN_SETUP },
		{ "read-tree", cmd_read_tree, RUN_SETUP },
		{ "receive-pack", cmd_receive_pack },
		{ "reflog", cmd_reflog, RUN_SETUP },
		{ "remote", cmd_remote, RUN_SETUP },
		{ "replace", cmd_replace, RUN_SETUP },
		{ "repo-config", cmd_config, RUN_SETUP_GENTLY },
		{ "rerere", cmd_rerere, RUN_SETUP },
		{ "reset", cmd_reset, RUN_SETUP },
		{ "rev-list", cmd_rev_list, RUN_SETUP },
		{ "rev-parse", cmd_rev_parse },
		{ "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE },
		{ "rm", cmd_rm, RUN_SETUP },
		{ "send-pack", cmd_send_pack, RUN_SETUP },
		{ "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER },
		{ "show-branch", cmd_show_branch, RUN_SETUP },
		{ "show", cmd_show, RUN_SETUP },
		{ "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
		{ "stripspace", cmd_stripspace },
		{ "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
		{ "tag", cmd_tag, RUN_SETUP },
		{ "tar-tree", cmd_tar_tree },
		{ "unpack-file", cmd_unpack_file, RUN_SETUP },
		{ "unpack-objects", cmd_unpack_objects, RUN_SETUP },
		{ "update-index", cmd_update_index, RUN_SETUP },
		{ "update-ref", cmd_update_ref, RUN_SETUP },
		{ "update-server-info", cmd_update_server_info, RUN_SETUP },
		{ "upload-archive", cmd_upload_archive },
		{ "var", cmd_var, RUN_SETUP_GENTLY },
		{ "verify-tag", cmd_verify_tag, RUN_SETUP },
		{ "version", cmd_version },
		{ "whatchanged", cmd_whatchanged, RUN_SETUP },
		{ "write-tree", cmd_write_tree, RUN_SETUP },
		{ "verify-pack", cmd_verify_pack },
		{ "show-ref", cmd_show_ref, RUN_SETUP },
		{ "pack-refs", cmd_pack_refs, RUN_SETUP },
	};
	int i;
	static const char ext[] = STRIP_EXTENSION;

	if (sizeof(ext) > 1) {
		i = strlen(argv[0]) - strlen(ext);
		if (i > 0 && !strcmp(argv[0] + i, ext)) {
			char *argv0 = xstrdup(argv[0]);
			argv[0] = cmd = argv0;
			argv0[i] = '\0';
		}
	}

	/* Turn "git cmd --help" into "git help cmd" */
	if (argc > 1 && !strcmp(argv[1], "--help")) {
		argv[1] = argv[0];
		argv[0] = cmd = "help";
	}

	for (i = 0; i < ARRAY_SIZE(commands); i++) {
		struct cmd_struct *p = commands+i;
		if (strcmp(p->cmd, cmd))
			continue;
		exit(run_builtin(p, argc, argv));
	}
}

static void execv_dashed_external(const char **argv)
{
	struct strbuf cmd = STRBUF_INIT;
	const char *tmp;
	int status;

	commit_pager_choice();

	strbuf_addf(&cmd, "git-%s", argv[0]);

	/*
	 * argv[0] must be the git command, but the argv array
	 * belongs to the caller, and may be reused in
	 * subsequent loop iterations. Save argv[0] and
	 * restore it on error.
	 */
	tmp = argv[0];
	argv[0] = cmd.buf;

	trace_argv_printf(argv, "trace: exec:");

	/*
	 * if we fail because the command is not found, it is
	 * OK to return. Otherwise, we just pass along the status code.
	 */
	status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE);
	if (status >= 0 || errno != ENOENT)
		exit(status);

	argv[0] = tmp;

	strbuf_release(&cmd);
}

static int run_argv(int *argcp, const char ***argv)
{
	int done_alias = 0;

	while (1) {
		/* See if it's an internal command */
		handle_internal_command(*argcp, *argv);

		/* .. then try the external ones */
		execv_dashed_external(*argv);

		/* It could be an alias -- this works around the insanity
		 * of overriding "git log" with "git show" by having
		 * alias.log = show
		 */
		if (done_alias || !handle_alias(argcp, argv))
			break;
		done_alias = 1;
	}

	return done_alias;
}


int main(int argc, const char **argv)
{
	const char *cmd;

	startup_info = &git_startup_info;

	cmd = git_extract_argv0_path(argv[0]);
	if (!cmd)
		cmd = "git-help";

	/*
	 * "git-xxxx" is the same as "git xxxx", but we obviously:
	 *
	 *  - cannot take flags in between the "git" and the "xxxx".
	 *  - cannot execute it externally (since it would just do
	 *    the same thing over again)
	 *
	 * So we just directly call the internal command handler, and
	 * die if that one cannot handle it.
	 */
	if (!prefixcmp(cmd, "git-")) {
		cmd += 4;
		argv[0] = cmd;
		handle_internal_command(argc, argv);
		die("cannot handle %s internally", cmd);
	}

	/* Look for flags.. */
	argv++;
	argc--;
	handle_options(&argv, &argc, NULL);
	if (argc > 0) {
		if (!prefixcmp(argv[0], "--"))
			argv[0] += 2;
	} else {
		/* The user didn't specify a command; give them help */
		commit_pager_choice();
		printf("usage: %s\n\n", git_usage_string);
		list_common_cmds_help();
		printf("\n%s\n", git_more_info_string);
		exit(1);
	}
	cmd = argv[0];

	/*
	 * We use PATH to find git commands, but we prepend some higher
	 * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH
	 * environment, and the $(gitexecdir) from the Makefile at build
	 * time.
	 */
	setup_path();

	while (1) {
		static int done_help = 0;
		static int was_alias = 0;
		was_alias = run_argv(&argc, &argv);
		if (errno != ENOENT)
			break;
		if (was_alias) {
			fprintf(stderr, "Expansion of alias '%s' failed; "
				"'%s' is not a git command\n",
				cmd, argv[0]);
			exit(1);
		}
		if (!done_help) {
			cmd = argv[0] = help_unknown_cmd(cmd);
			done_help = 1;
		} else
			break;
	}

	fprintf(stderr, "Failed to run command '%s': %s\n",
		cmd, strerror(errno));

	return 1;
}
Commit	Line	Data
85023577	1	#include "builtin.h"
77cb17e9	2	#include "exec_cmd.h"
2b11e317	3	#include "cache.h"
575ba9d6	4	#include "quote.h"
d8e96fd8	5	#include "run-command.h"
8e49d503	6
822a7d50	7	const char git_usage_string[] =
511a3fc1	8	"git [--version] [--exec-path[=GIT_EXEC_PATH]] [--html-path]\n"
b0fa7ab5	9	" [-p\|--paginate\|--no-pager] [--no-replace-objects]\n"
511a3fc1	10	" [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE]\n"
293b07f1 TR	11	" [-c name=value] [--help]\n"
293b07f1 TR	12	" COMMAND [ARGS]";
822a7d50	13
b7d96819 TL	14	const char git_more_info_string[] =
	15	"See 'git help COMMAND' for more information on a specific command.";
	16
e37c1329	17	static struct startup_info git_startup_info;
4e10738a JK	18	static int use_pager = -1;
	19	struct pager_config {
	20	const char *cmd;
	21	int val;
	22	};
	23
	24	static int pager_command_config(const char var, const char value, void *data)
	25	{
	26	struct pager_config *c = data;
	27	if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd))
	28	c->val = git_config_bool(var, value);
	29	return 0;
	30	}
	31
	32	/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
	33	int check_pager_config(const char *cmd)
	34	{
	35	struct pager_config c;
	36	c.cmd = cmd;
	37	c.val = -1;
	38	git_config(pager_command_config, &c);
	39	return c.val;
	40	}
	41
	42	static void commit_pager_choice(void) {
	43	switch (use_pager) {
	44	case 0:
	45	setenv("GIT_PAGER", "cat", 1);
	46	break;
	47	case 1:
	48	setup_pager();
	49	break;
	50	default:
	51	break;
	52	}
	53	}
	54
4b25d091	55	static int handle_options(const char **argv, int argc, int *envchanged)
4ab243a9 JS	56	{
	57	int handled = 0;
	58
82cd8358 FL	59	if (!getenv("GIT_ASKPASS") && getenv("SSH_ASKPASS"))
	60	setenv("GIT_ASKPASS", getenv("SSH_ASKPASS"), 1);
	61
4ab243a9 JS	62	while (*argc > 0) {
	63	const char cmd = (argv)[0];
	64	if (cmd[0] != '-')
	65	break;
	66
6acbcb92 JS	67	/*
	68	* For legacy reasons, the "version" and "help"
	69	* commands can be written with "--" prepended
	70	* to make them look like flags.
	71	*/
	72	if (!strcmp(cmd, "--help") \|\| !strcmp(cmd, "--version"))
	73	break;
	74
	75	/*
	76	* Check remaining flags.
	77	*/
cc44c765	78	if (!prefixcmp(cmd, "--exec-path")) {
6acbcb92 JS	79	cmd += 11;
6acbcb92 JS	80	if (*cmd == '=')
384df833	81	git_set_argv_exec_path(cmd + 1);
6acbcb92 JS	82	else {
	83	puts(git_exec_path());
	84	exit(0);
	85	}
89a56bfb MH	86	} else if (!strcmp(cmd, "--html-path")) {
	87	puts(system_path(GIT_HTML_PATH));
	88	exit(0);
6acbcb92	89	} else if (!strcmp(cmd, "-p") \|\| !strcmp(cmd, "--paginate")) {
4e10738a	90	use_pager = 1;
463a849d	91	} else if (!strcmp(cmd, "--no-pager")) {
4e10738a	92	use_pager = 0;
463a849d MM	93	if (envchanged)
463a849d MM	94	*envchanged = 1;
b0fa7ab5 CC	95	} else if (!strcmp(cmd, "--no-replace-objects")) {
b0fa7ab5 CC	96	read_replace_refs = 0;
6476b38b CC	97	setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1);
	98	if (envchanged)
	99	*envchanged = 1;
6acbcb92	100	} else if (!strcmp(cmd, "--git-dir")) {
c321f00d BG	101	if (*argc < 2) {
	102	fprintf(stderr, "No directory given for --git-dir.\n" );
	103	usage(git_usage_string);
	104	}
45b09794	105	setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
4394efec ML	106	if (envchanged)
4394efec ML	107	*envchanged = 1;
6acbcb92 JS	108	(*argv)++;
6acbcb92 JS	109	(*argc)--;
e4b02333	110	handled++;
cc44c765	111	} else if (!prefixcmp(cmd, "--git-dir=")) {
45b09794	112	setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1);
4394efec ML	113	if (envchanged)
4394efec ML	114	*envchanged = 1;
892c41b9 ML	115	} else if (!strcmp(cmd, "--work-tree")) {
	116	if (*argc < 2) {
	117	fprintf(stderr, "No directory given for --work-tree.\n" );
	118	usage(git_usage_string);
	119	}
	120	setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
4394efec ML	121	if (envchanged)
4394efec ML	122	*envchanged = 1;
892c41b9 ML	123	(*argv)++;
	124	(*argc)--;
	125	} else if (!prefixcmp(cmd, "--work-tree=")) {
	126	setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1);
4394efec ML	127	if (envchanged)
4394efec ML	128	*envchanged = 1;
6acbcb92	129	} else if (!strcmp(cmd, "--bare")) {
ef5ddb2f	130	static char git_dir[PATH_MAX+1];
6adcca3f	131	is_bare_repository_cfg = 1;
9277d602	132	setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0);
4394efec ML	133	if (envchanged)
4394efec ML	134	*envchanged = 1;
8b1fa778 AR	135	} else if (!strcmp(cmd, "-c")) {
	136	if (*argc < 2) {
	137	fprintf(stderr, "-c expects a configuration string\n" );
	138	usage(git_usage_string);
	139	}
	140	git_config_parse_parameter((*argv)[1]);
	141	(*argv)++;
	142	(*argc)--;
6acbcb92 JS	143	} else {
6acbcb92 JS	144	fprintf(stderr, "Unknown option: %s\n", cmd);
822a7d50	145	usage(git_usage_string);
6acbcb92	146	}
4ab243a9 JS	147
	148	(*argv)++;
	149	(*argc)--;
	150	handled++;
	151	}
	152	return handled;
	153	}
	154
2b11e317 JS	155	static int handle_alias(int argcp, const char **argv)
2b11e317 JS	156	{
af05d679	157	int envchanged = 0, ret = 0, saved_errno = errno;
2b11e317	158	const char *subdir;
0347a8c7	159	int count, option_count;
4b25d091	160	const char **new_argv;
94351118 JK	161	const char *alias_command;
94351118 JK	162	char *alias_string;
e85dc0a3	163	int unused_nongit;
2b11e317	164
e85dc0a3	165	subdir = setup_git_directory_gently(&unused_nongit);
0347a8c7 ML	166
0347a8c7 ML	167	alias_command = (*argv)[0];
94351118	168	alias_string = alias_lookup(alias_command);
0347a8c7	169	if (alias_string) {
dfd42a3c	170	if (alias_string[0] == '!') {
030149a4	171	commit_pager_choice();
a2f8028d	172	if (*argcp > 1) {
7a33bcbe	173	struct strbuf buf;
a2f8028d	174
7a33bcbe PH	175	strbuf_init(&buf, PATH_MAX);
7a33bcbe PH	176	strbuf_addstr(&buf, alias_string);
b319ce4c	177	sq_quote_argv(&buf, (*argv) + 1, PATH_MAX);
a2f8028d	178	free(alias_string);
7a33bcbe	179	alias_string = buf.buf;
a2f8028d	180	}
dfd42a3c TT	181	trace_printf("trace: alias to shell cmd: %s => %s\n",
	182	alias_command, alias_string + 1);
	183	ret = system(alias_string + 1);
	184	if (ret >= 0 && WIFEXITED(ret) &&
	185	WEXITSTATUS(ret) != 127)
	186	exit(WEXITSTATUS(ret));
d7530708	187	die("Failed to run '%s' when expanding alias '%s'",
dfd42a3c TT	188	alias_string + 1, alias_command);
dfd42a3c TT	189	}
0347a8c7	190	count = split_cmdline(alias_string, &new_argv);
dc4179f9	191	if (count < 0)
ad9ac6db GB	192	die("Bad alias.%s string: %s", alias_command,
ad9ac6db GB	193	split_cmdline_strerror(count));
4394efec ML	194	option_count = handle_options(&new_argv, &count, &envchanged);
	195	if (envchanged)
	196	die("alias '%s' changes environment variables\n"
	197	"You can use '!git' in the alias to do this.",
	198	alias_command);
0347a8c7 ML	199	memmove(new_argv - option_count, new_argv,
	200	count * sizeof(char *));
	201	new_argv -= option_count;
	202
	203	if (count < 1)
	204	die("empty alias for %s", alias_command);
	205
	206	if (!strcmp(alias_command, new_argv[0]))
	207	die("recursive alias: %s", alias_command);
	208
b319ce4c	209	trace_argv_printf(new_argv,
6ce4e61f CC	210	"trace: alias expansion: %s =>",
6ce4e61f CC	211	alias_command);
575ba9d6	212
4b25d091	213	new_argv = xrealloc(new_argv, sizeof(char )
6167c136	214	(count + *argcp));
0347a8c7	215	/* insert after command name */
4b25d091	216	memcpy(new_argv + count, argv + 1, sizeof(char ) * *argcp);
2b11e317	217
0347a8c7 ML	218	*argv = new_argv;
0347a8c7 ML	219	*argcp += count - 1;
2b11e317	220
0347a8c7	221	ret = 1;
2b11e317 JS	222	}
2b11e317 JS	223
7be77de2	224	if (subdir && chdir(subdir))
d824cbba	225	die_errno("Cannot change to '%s'", subdir);
2b11e317	226
47e5c0ca JS	227	errno = saved_errno;
47e5c0ca JS	228
2b11e317 JS	229	return ret;
	230	}
	231
70827b15	232	const char git_version_string[] = GIT_VERSION;
5b84f4d8	233
ee38dfb8 NTND	234	#define RUN_SETUP (1<<0)
	235	#define RUN_SETUP_GENTLY (1<<1)
	236	#define USE_PAGER (1<<2)
7eff28a9 SP	237	/*
	238	* require working tree to be present -- anything uses this needs
	239	* RUN_SETUP for reading from the configuration file.
	240	*/
ee38dfb8	241	#define NEED_WORK_TREE (1<<3)
a633fca0	242
47d0b4ff LT	243	struct cmd_struct {
	244	const char *cmd;
	245	int (fn)(int, const char , const char );
	246	int option;
	247	};
	248
f172f334	249	static int run_builtin(struct cmd_struct p, int argc, const char *argv)
47d0b4ff	250	{
99caeed0	251	int status, help;
0f157315	252	struct stat st;
47d0b4ff LT	253	const char *prefix;
	254
	255	prefix = NULL;
99caeed0 JN	256	help = argc == 2 && !strcmp(argv[1], "-h");
	257	if (!help) {
	258	if (p->option & RUN_SETUP)
	259	prefix = setup_git_directory();
ee38dfb8 NTND	260	if (p->option & RUN_SETUP_GENTLY) {
	261	int nongit_ok;
	262	prefix = setup_git_directory_gently(&nongit_ok);
	263	}
99caeed0	264
ee38dfb8	265	if (use_pager == -1 && p->option & (RUN_SETUP \| RUN_SETUP_GENTLY))
99caeed0 JN	266	use_pager = check_pager_config(p->cmd);
	267	if (use_pager == -1 && p->option & USE_PAGER)
	268	use_pager = 1;
	269	}
4e10738a JK	270	commit_pager_choice();
4e10738a JK	271
99caeed0	272	if (!help && p->option & NEED_WORK_TREE)
59f0f2f3 MH	273	setup_work_tree();
59f0f2f3 MH	274
b319ce4c	275	trace_argv_printf(argv, "trace: built-in: git");
47d0b4ff	276
0f157315 LT	277	status = p->fn(argc, argv, prefix);
0f157315 LT	278	if (status)
47e3de0e	279	return status;
0f157315 LT	280
	281	/* Somebody closed stdout? */
	282	if (fstat(fileno(stdout), &st))
	283	return 0;
	284	/* Ignore write errors for pipes and sockets.. */
	285	if (S_ISFIFO(st.st_mode) \|\| S_ISSOCK(st.st_mode))
	286	return 0;
	287
	288	/* Check for ENOSPC and EIO errors.. */
0227f988	289	if (fflush(stdout))
d824cbba	290	die_errno("write failure on standard output");
0227f988 LT	291	if (ferror(stdout))
	292	die("unknown write failure on standard output");
	293	if (fclose(stdout))
d824cbba	294	die_errno("close failed on standard output");
0f157315	295	return 0;
47d0b4ff LT	296	}
	297
	298	static void handle_internal_command(int argc, const char **argv)
231af832 LT	299	{
231af832 LT	300	const char *cmd = argv[0];
47d0b4ff	301	static struct cmd_struct commands[] = {
7ae3df8c	302	{ "add", cmd_add, RUN_SETUP \| NEED_WORK_TREE },
11920d28	303	{ "stage", cmd_add, RUN_SETUP \| NEED_WORK_TREE },
d97bc5de	304	{ "annotate", cmd_annotate, RUN_SETUP },
d1ea8962	305	{ "apply", cmd_apply, RUN_SETUP_GENTLY },
265d5280	306	{ "archive", cmd_archive },
1bf072e3	307	{ "bisect--helper", cmd_bisect__helper, RUN_SETUP \| NEED_WORK_TREE },
4f0219a4	308	{ "blame", cmd_blame, RUN_SETUP },
1da1b3a3	309	{ "branch", cmd_branch, RUN_SETUP },
2cb60093	310	{ "bundle", cmd_bundle, RUN_SETUP_GENTLY },
efffea03	311	{ "cat-file", cmd_cat_file, RUN_SETUP },
782c2d65	312	{ "checkout", cmd_checkout, RUN_SETUP \| NEED_WORK_TREE },
4465f410 JS	313	{ "checkout-index", cmd_checkout_index,
4465f410 JS	314	RUN_SETUP \| NEED_WORK_TREE},
0864f264	315	{ "check-ref-format", cmd_check_ref_format },
2d35d556	316	{ "check-attr", cmd_check_attr, RUN_SETUP },
e827633a	317	{ "cherry", cmd_cherry, RUN_SETUP },
7ae3df8c	318	{ "cherry-pick", cmd_cherry_pick, RUN_SETUP \| NEED_WORK_TREE },
8434c2f1	319	{ "clone", cmd_clone },
113f10f2	320	{ "clean", cmd_clean, RUN_SETUP \| NEED_WORK_TREE },
f5bbc322	321	{ "commit", cmd_commit, RUN_SETUP \| NEED_WORK_TREE },
efffea03	322	{ "commit-tree", cmd_commit_tree, RUN_SETUP },
3ba7e6e2	323	{ "config", cmd_config, RUN_SETUP_GENTLY },
8112894d	324	{ "count-objects", cmd_count_objects, RUN_SETUP },
9a0eaf83	325	{ "describe", cmd_describe, RUN_SETUP },
89d07f75	326	{ "diff", cmd_diff },
4f38f6b5	327	{ "diff-files", cmd_diff_files, RUN_SETUP \| NEED_WORK_TREE },
efffea03	328	{ "diff-index", cmd_diff_index, RUN_SETUP },
efffea03	329	{ "diff-tree", cmd_diff_tree, RUN_SETUP },
f2dc849e	330	{ "fast-export", cmd_fast_export, RUN_SETUP },
b888d61c	331	{ "fetch", cmd_fetch, RUN_SETUP },
2d4177c0	332	{ "fetch-pack", cmd_fetch_pack, RUN_SETUP },
efffea03	333	{ "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
9f613ddd	334	{ "for-each-ref", cmd_for_each_ref, RUN_SETUP },
efffea03	335	{ "format-patch", cmd_format_patch, RUN_SETUP },
b4dfefe0 MW	336	{ "fsck", cmd_fsck, RUN_SETUP },
b4dfefe0 MW	337	{ "fsck-objects", cmd_fsck, RUN_SETUP },
6757ada4	338	{ "gc", cmd_gc, RUN_SETUP },
f754fa9c	339	{ "get-tar-commit-id", cmd_get_tar_commit_id },
ff38d1a9	340	{ "grep", cmd_grep, RUN_SETUP_GENTLY },
b28a1ce0	341	{ "hash-object", cmd_hash_object },
f754fa9c	342	{ "help", cmd_help },
e0fce074	343	{ "index-pack", cmd_index_pack, RUN_SETUP_GENTLY },
515377ea	344	{ "init", cmd_init_db },
f754fa9c	345	{ "init-db", cmd_init_db },
1fda91b5	346	{ "log", cmd_log, RUN_SETUP },
efffea03 JH	347	{ "ls-files", cmd_ls_files, RUN_SETUP },
efffea03 JH	348	{ "ls-tree", cmd_ls_tree, RUN_SETUP },
f0ef6a6e	349	{ "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
f754fa9c JH	350	{ "mailinfo", cmd_mailinfo },
f754fa9c JH	351	{ "mailsplit", cmd_mailsplit },
1c7b76be	352	{ "merge", cmd_merge, RUN_SETUP \| NEED_WORK_TREE },
71dfbf22	353	{ "merge-base", cmd_merge_base, RUN_SETUP },
3668d423	354	{ "merge-file", cmd_merge_file, RUN_SETUP_GENTLY },
0ecace72	355	{ "merge-index", cmd_merge_index, RUN_SETUP },
a00a42ae	356	{ "merge-ours", cmd_merge_ours, RUN_SETUP },
e1b3a2ca	357	{ "merge-recursive", cmd_merge_recursive, RUN_SETUP \| NEED_WORK_TREE },
8cc5b290 AP	358	{ "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP \| NEED_WORK_TREE },
8cc5b290 AP	359	{ "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP \| NEED_WORK_TREE },
1736855c	360	{ "merge-subtree", cmd_merge_recursive, RUN_SETUP \| NEED_WORK_TREE },
907a7cb5	361	{ "merge-tree", cmd_merge_tree, RUN_SETUP },
112dd514	362	{ "mktag", cmd_mktag, RUN_SETUP },
633e3556	363	{ "mktree", cmd_mktree, RUN_SETUP },
7ae3df8c	364	{ "mv", cmd_mv, RUN_SETUP \| NEED_WORK_TREE },
efffea03	365	{ "name-rev", cmd_name_rev, RUN_SETUP },
cd067d3b	366	{ "notes", cmd_notes, RUN_SETUP },
efffea03	367	{ "pack-objects", cmd_pack_objects, RUN_SETUP },
377d0276	368	{ "pack-redundant", cmd_pack_redundant, RUN_SETUP },
dedc0ec5	369	{ "patch-id", cmd_patch_id },
f0ef6a6e	370	{ "peek-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
d97bc5de	371	{ "pickaxe", cmd_blame, RUN_SETUP },
efffea03 JH	372	{ "prune", cmd_prune, RUN_SETUP },
efffea03 JH	373	{ "prune-packed", cmd_prune_packed, RUN_SETUP },
102cb085	374	{ "push", cmd_push, RUN_SETUP },
efffea03	375	{ "read-tree", cmd_read_tree, RUN_SETUP },
be5908ae	376	{ "receive-pack", cmd_receive_pack },
4264dc15	377	{ "reflog", cmd_reflog, RUN_SETUP },
211c8968	378	{ "remote", cmd_remote, RUN_SETUP },
54b0c1e0	379	{ "replace", cmd_replace, RUN_SETUP },
3ba7e6e2	380	{ "repo-config", cmd_config, RUN_SETUP_GENTLY },
658f3650	381	{ "rerere", cmd_rerere, RUN_SETUP },
0e5a7faa	382	{ "reset", cmd_reset, RUN_SETUP },
efffea03	383	{ "rev-list", cmd_rev_list, RUN_SETUP },
5410a02a	384	{ "rev-parse", cmd_rev_parse },
7ae3df8c	385	{ "revert", cmd_revert, RUN_SETUP \| NEED_WORK_TREE },
271bb087	386	{ "rm", cmd_rm, RUN_SETUP },
96249c04	387	{ "send-pack", cmd_send_pack, RUN_SETUP },
773b69bf	388	{ "shortlog", cmd_shortlog, RUN_SETUP_GENTLY \| USE_PAGER },
efffea03	389	{ "show-branch", cmd_show_branch, RUN_SETUP },
1fda91b5	390	{ "show", cmd_show, RUN_SETUP },
10762323	391	{ "status", cmd_status, RUN_SETUP \| NEED_WORK_TREE },
f754fa9c	392	{ "stripspace", cmd_stripspace },
efffea03	393	{ "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
62e09ce9	394	{ "tag", cmd_tag, RUN_SETUP },
9cb90b80	395	{ "tar-tree", cmd_tar_tree },
b5325818	396	{ "unpack-file", cmd_unpack_file, RUN_SETUP },
efffea03 JH	397	{ "unpack-objects", cmd_unpack_objects, RUN_SETUP },
	398	{ "update-index", cmd_update_index, RUN_SETUP },
	399	{ "update-ref", cmd_update_ref, RUN_SETUP },
53a1116c	400	{ "update-server-info", cmd_update_server_info, RUN_SETUP },
39345a21	401	{ "upload-archive", cmd_upload_archive },
2bc8c1a8	402	{ "var", cmd_var, RUN_SETUP_GENTLY },
2ae68fcb	403	{ "verify-tag", cmd_verify_tag, RUN_SETUP },
f754fa9c	404	{ "version", cmd_version },
1fda91b5	405	{ "whatchanged", cmd_whatchanged, RUN_SETUP },
efffea03	406	{ "write-tree", cmd_write_tree, RUN_SETUP },
2e3ed670	407	{ "verify-pack", cmd_verify_pack },
358ddb62	408	{ "show-ref", cmd_show_ref, RUN_SETUP },
e1e22e37	409	{ "pack-refs", cmd_pack_refs, RUN_SETUP },
231af832 LT	410	};
231af832 LT	411	int i;
23326d14 JS	412	static const char ext[] = STRIP_EXTENSION;
	413
	414	if (sizeof(ext) > 1) {
	415	i = strlen(argv[0]) - strlen(ext);
	416	if (i > 0 && !strcmp(argv[0] + i, ext)) {
e8eec71d	417	char *argv0 = xstrdup(argv[0]);
23326d14 JS	418	argv[0] = cmd = argv0;
	419	argv0[i] = '\0';
	420	}
	421	}
231af832	422
1cd95087 LT	423	/* Turn "git cmd --help" into "git help cmd" */
	424	if (argc > 1 && !strcmp(argv[1], "--help")) {
	425	argv[1] = argv[0];
	426	argv[0] = cmd = "help";
	427	}
	428
231af832 LT	429	for (i = 0; i < ARRAY_SIZE(commands); i++) {
	430	struct cmd_struct *p = commands+i;
	431	if (strcmp(p->cmd, cmd))
	432	continue;
f172f334	433	exit(run_builtin(p, argc, argv));
231af832 LT	434	}
	435	}
	436
7550be0a JH	437	static void execv_dashed_external(const char **argv)
7550be0a JH	438	{
f285a2d7	439	struct strbuf cmd = STRBUF_INIT;
7550be0a	440	const char *tmp;
d8e96fd8	441	int status;
7550be0a	442
030149a4 JN	443	commit_pager_choice();
030149a4 JN	444
7550be0a JH	445	strbuf_addf(&cmd, "git-%s", argv[0]);
	446
	447	/*
	448	* argv[0] must be the git command, but the argv array
	449	* belongs to the caller, and may be reused in
	450	* subsequent loop iterations. Save argv[0] and
	451	* restore it on error.
	452	*/
	453	tmp = argv[0];
	454	argv[0] = cmd.buf;
	455
	456	trace_argv_printf(argv, "trace: exec:");
	457
d8e96fd8 JK	458	/*
	459	* if we fail because the command is not found, it is
	460	* OK to return. Otherwise, we just pass along the status code.
	461	*/
c024beb5	462	status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE);
0ac77ec3	463	if (status >= 0 \|\| errno != ENOENT)
5709e036	464	exit(status);
7550be0a JH	465
	466	argv[0] = tmp;
	467
	468	strbuf_release(&cmd);
	469	}
	470
a907e1b6 AS	471	static int run_argv(int argcp, const char **argv)
	472	{
	473	int done_alias = 0;
	474
	475	while (1) {
	476	/* See if it's an internal command */
	477	handle_internal_command(argcp, argv);
	478
	479	/* .. then try the external ones */
	480	execv_dashed_external(*argv);
	481
	482	/* It could be an alias -- this works around the insanity
	483	* of overriding "git log" with "git show" by having
	484	* alias.log = show
	485	*/
	486	if (done_alias \|\| !handle_alias(argcp, argv))
	487	break;
	488	done_alias = 1;
	489	}
	490
	491	return done_alias;
	492	}
	493
7550be0a	494
47d0b4ff	495	int main(int argc, const char **argv)
8e49d503	496	{
4dd47c3b	497	const char *cmd;
231af832	498
e37c1329 NTND	499	startup_info = &git_startup_info;
e37c1329 NTND	500
2cd72b0b SP	501	cmd = git_extract_argv0_path(argv[0]);
2cd72b0b SP	502	if (!cmd)
4dd47c3b	503	cmd = "git-help";
8e49d503	504
231af832 LT	505	/*
	506	* "git-xxxx" is the same as "git xxxx", but we obviously:
	507	*
	508	* - cannot take flags in between the "git" and the "xxxx".
	509	* - cannot execute it externally (since it would just do
	510	* the same thing over again)
	511	*
	512	* So we just directly call the internal command handler, and
	513	* die if that one cannot handle it.
	514	*/
cc44c765	515	if (!prefixcmp(cmd, "git-")) {
231af832 LT	516	cmd += 4;
231af832 LT	517	argv[0] = cmd;
47d0b4ff	518	handle_internal_command(argc, argv);
231af832 LT	519	die("cannot handle %s internally", cmd);
231af832 LT	520	}
8e49d503	521
231af832	522	/* Look for flags.. */
6acbcb92 JS	523	argv++;
6acbcb92 JS	524	argc--;
4394efec	525	handle_options(&argv, &argc, NULL);
6acbcb92	526	if (argc > 0) {
cc44c765	527	if (!prefixcmp(argv[0], "--"))
6acbcb92 JS	528	argv[0] += 2;
6acbcb92 JS	529	} else {
3d7e2d85	530	/* The user didn't specify a command; give them help */
73e25e7c	531	commit_pager_choice();
3d7e2d85 SP	532	printf("usage: %s\n\n", git_usage_string);
3d7e2d85 SP	533	list_common_cmds_help();
b7d96819	534	printf("\n%s\n", git_more_info_string);
3d7e2d85	535	exit(1);
97fc6c5f	536	}
6acbcb92	537	cmd = argv[0];
231af832 LT	538
231af832 LT	539	/*
511707d4	540	* We use PATH to find git commands, but we prepend some higher
3ea3c215	541	* precedence paths: the "--exec-path" option, the GIT_EXEC_PATH
511707d4 SP	542	* environment, and the $(gitexecdir) from the Makefile at build
511707d4 SP	543	* time.
231af832	544	*/
e1464ca7	545	setup_path();
8e49d503	546
a025463b	547	while (1) {
a907e1b6 AS	548	static int done_help = 0;
	549	static int was_alias = 0;
	550	was_alias = run_argv(&argc, &argv);
	551	if (errno != ENOENT)
a025463b	552	break;
a907e1b6	553	if (was_alias) {
f3dd015c	554	fprintf(stderr, "Expansion of alias '%s' failed; "
7283bbc7	555	"'%s' is not a git command\n",
f3dd015c TT	556	cmd, argv[0]);
	557	exit(1);
	558	}
a907e1b6 AS	559	if (!done_help) {
	560	cmd = argv[0] = help_unknown_cmd(cmd);
	561	done_help = 1;
	562	} else
	563	break;
f3dd015c	564	}
10b15b86 AR	565
10b15b86 AR	566	fprintf(stderr, "Failed to run command '%s': %s\n",
33ebb871	567	cmd, strerror(errno));
8e49d503 AE	568
	569	return 1;
	570	}