1 files changed, 144 insertions, 94 deletions

diff --git a/git.c b/git.c
index 6cd887b..654d615 100644
--- a/git.c
+++ b/git.c
@@ -1,10 +1,20 @@
 #include "builtin.h"
 #include "config.h"
+#include "environment.h"
 #include "exec-cmd.h"
+#include "gettext.h"
 #include "help.h"
+#include "object-file.h"
+#include "pager.h"
+#include "read-cache-ll.h"
 #include "run-command.h"
 #include "alias.h"
+#include "replace-object.h"
+#include "setup.h"
+#include "attr.h"
 #include "shallow.h"
+#include "trace.h"
+#include "trace2.h"
 
 #define RUN_SETUP		(1<<0)
 #define RUN_SETUP_GENTLY	(1<<1)
@@ -14,9 +24,8 @@
  * RUN_SETUP for reading from the configuration file.
  */
 #define NEED_WORK_TREE		(1<<3)
-#define SUPPORT_SUPER_PREFIX	(1<<4)
-#define DELAY_PAGER_CONFIG	(1<<5)
-#define NO_PARSEOPT		(1<<6) /* parse-options is not used */
+#define DELAY_PAGER_CONFIG	(1<<4)
+#define NO_PARSEOPT		(1<<5) /* parse-options is not used */
 
 struct cmd_struct {
 	const char *cmd;
@@ -25,11 +34,11 @@ struct cmd_struct {
 };
 
 const char git_usage_string[] =
-	N_("git [--version] [--help] [-C <path>] [-c <name>=<value>]\n"
+	N_("git [-v | --version] [-h | --help] [-C <path>] [-c <name>=<value>]\n"
 	   "           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n"
 	   "           [-p | --paginate | -P | --no-pager] [--no-replace-objects] [--bare]\n"
 	   "           [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n"
-	   "           <command> [<args>]");
+	   "           [--config-env=<name>=<envvar>] <command> [<args>]");
 
 const char git_more_info_string[] =
 	N_("'git help -a' and 'git help -g' list available subcommands and some\n"
@@ -145,7 +154,8 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 		 * commands can be written with "--" prepended
 		 * to make them look like flags.
 		 */
-		if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version"))
+		if (!strcmp(cmd, "--help") || !strcmp(cmd, "-h") ||
+		    !strcmp(cmd, "--version") || !strcmp(cmd, "-v"))
 			break;
 
 		/*
@@ -177,14 +187,19 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 			use_pager = 0;
 			if (envchanged)
 				*envchanged = 1;
+		} else if (!strcmp(cmd, "--no-lazy-fetch")) {
+			fetch_if_missing = 0;
+			setenv(NO_LAZY_FETCH_ENVIRONMENT, "1", 1);
+			if (envchanged)
+				*envchanged = 1;
 		} else if (!strcmp(cmd, "--no-replace-objects")) {
-			read_replace_refs = 0;
+			disable_replace_refs();
 			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" ));
+				fprintf(stderr, _("no directory given for '%s' option\n" ), "--git-dir");
 				usage(git_usage_string);
 			}
 			setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
@@ -212,7 +227,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 				*envchanged = 1;
 		} else if (!strcmp(cmd, "--work-tree")) {
 			if (*argc < 2) {
-				fprintf(stderr, _("no directory given for --work-tree\n" ));
+				fprintf(stderr, _("no directory given for '%s' option\n" ), "--work-tree");
 				usage(git_usage_string);
 			}
 			setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
@@ -224,20 +239,6 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 			setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1);
 			if (envchanged)
 				*envchanged = 1;
-		} else if (!strcmp(cmd, "--super-prefix")) {
-			if (*argc < 2) {
-				fprintf(stderr, _("no prefix given for --super-prefix\n" ));
-				usage(git_usage_string);
-			}
-			setenv(GIT_SUPER_PREFIX_ENVIRONMENT, (*argv)[1], 1);
-			if (envchanged)
-				*envchanged = 1;
-			(*argv)++;
-			(*argc)--;
-		} else if (skip_prefix(cmd, "--super-prefix=", &cmd)) {
-			setenv(GIT_SUPER_PREFIX_ENVIRONMENT, cmd, 1);
-			if (envchanged)
-				*envchanged = 1;
 		} else if (!strcmp(cmd, "--bare")) {
 			char *cwd = xgetcwd();
 			is_bare_repository_cfg = 1;
@@ -254,6 +255,16 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 			git_config_push_parameter((*argv)[1]);
 			(*argv)++;
 			(*argc)--;
+		} else if (!strcmp(cmd, "--config-env")) {
+			if (*argc < 2) {
+				fprintf(stderr, _("no config key given for --config-env\n" ));
+				usage(git_usage_string);
+			}
+			git_config_push_env((*argv)[1]);
+			(*argv)++;
+			(*argc)--;
+		} else if (skip_prefix(cmd, "--config-env=", &cmd)) {
+			git_config_push_env(cmd);
 		} else if (!strcmp(cmd, "--literal-pathspecs")) {
 			setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "1", 1);
 			if (envchanged)
@@ -286,7 +297,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 				*envchanged = 1;
 		} else if (!strcmp(cmd, "-C")) {
 			if (*argc < 2) {
-				fprintf(stderr, _("no directory given for -C\n" ));
+				fprintf(stderr, _("no directory given for '%s' option\n" ), "-C");
 				usage(git_usage_string);
 			}
 			if ((*argv)[1][0]) {
@@ -311,6 +322,21 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 			} else {
 				exit(list_cmds(cmd));
 			}
+		} else if (!strcmp(cmd, "--attr-source")) {
+			if (*argc < 2) {
+				fprintf(stderr, _("no attribute source given for --attr-source\n" ));
+				usage(git_usage_string);
+			}
+			setenv(GIT_ATTR_SOURCE_ENVIRONMENT, (*argv)[1], 1);
+			if (envchanged)
+				*envchanged = 1;
+			(*argv)++;
+			(*argc)--;
+		} else if (skip_prefix(cmd, "--attr-source=", &cmd)) {
+			set_git_attr_source(cmd);
+			setenv(GIT_ATTR_SOURCE_ENVIRONMENT, cmd, 1);
+			if (envchanged)
+				*envchanged = 1;
 		} else {
 			fprintf(stderr, _("unknown option: %s\n"), cmd);
 			usage(git_usage_string);
@@ -349,12 +375,10 @@ static int handle_alias(int *argcp, const char ***argv)
 			child.clean_on_exit = 1;
 			child.wait_after_clean = 1;
 			child.trace2_child_class = "shell_alias";
-			argv_array_push(&child.args, alias_string + 1);
-			argv_array_pushv(&child.args, (*argv) + 1);
+			strvec_push(&child.args, alias_string + 1);
+			strvec_pushv(&child.args, (*argv) + 1);
 
-			trace2_cmd_alias(alias_command, child.args.argv);
-			trace2_cmd_list_config();
-			trace2_cmd_list_env_vars();
+			trace2_cmd_alias(alias_command, child.args.v);
 			trace2_cmd_name("_run_shell_alias_");
 
 			ret = run_command(&child);
@@ -391,8 +415,6 @@ static int handle_alias(int *argcp, const char ***argv)
 		COPY_ARRAY(new_argv + count, *argv + 1, *argcp);
 
 		trace2_cmd_alias(alias_command, new_argv);
-		trace2_cmd_list_config();
-		trace2_cmd_list_env_vars();
 
 		*argv = new_argv;
 		*argcp += count - 1;
@@ -410,41 +432,38 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
 	int status, help;
 	struct stat st;
 	const char *prefix;
+	int run_setup = (p->option & (RUN_SETUP | RUN_SETUP_GENTLY));
 
-	prefix = NULL;
 	help = argc == 2 && !strcmp(argv[1], "-h");
-	if (!help) {
-		if (p->option & RUN_SETUP)
-			prefix = setup_git_directory();
-		else 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) &&
-		    !(p->option & DELAY_PAGER_CONFIG))
-			use_pager = check_pager_config(p->cmd);
-		if (use_pager == -1 && p->option & USE_PAGER)
-			use_pager = 1;
-
-		if ((p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) &&
-		    startup_info->have_repository) /* get_git_dir() may set up repo, avoid that */
-			trace_repo_setup(prefix);
+	if (help && (run_setup & RUN_SETUP))
+		/* demote to GENTLY to allow 'git cmd -h' outside repo */
+		run_setup = RUN_SETUP_GENTLY;
+
+	if (run_setup & RUN_SETUP) {
+		prefix = setup_git_directory();
+	} else if (run_setup & RUN_SETUP_GENTLY) {
+		int nongit_ok;
+		prefix = setup_git_directory_gently(&nongit_ok);
+	} else {
+		prefix = NULL;
 	}
+	assert(!prefix || *prefix);
+	precompose_argv_prefix(argc, argv, NULL);
+	if (use_pager == -1 && run_setup &&
+		!(p->option & DELAY_PAGER_CONFIG))
+		use_pager = check_pager_config(p->cmd);
+	if (use_pager == -1 && p->option & USE_PAGER)
+		use_pager = 1;
+	if (run_setup && startup_info->have_repository)
+		/* get_git_dir() may set up repo, avoid that */
+		trace_repo_setup();
 	commit_pager_choice();
 
-	if (!help && get_super_prefix()) {
-		if (!(p->option & SUPPORT_SUPER_PREFIX))
-			die(_("%s doesn't support --super-prefix"), p->cmd);
-	}
-
 	if (!help && p->option & NEED_WORK_TREE)
 		setup_work_tree();
 
 	trace_argv_printf(argv, "trace: built-in: git");
 	trace2_cmd_name(p->cmd);
-	trace2_cmd_list_config();
-	trace2_cmd_list_env_vars();
 
 	validate_cache_entries(the_repository->index);
 	status = p->fn(argc, argv, prefix);
@@ -473,19 +492,22 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
 static struct cmd_struct commands[] = {
 	{ "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
 	{ "am", cmd_am, RUN_SETUP | NEED_WORK_TREE },
-	{ "annotate", cmd_annotate, RUN_SETUP | NO_PARSEOPT },
+	{ "annotate", cmd_annotate, RUN_SETUP },
 	{ "apply", cmd_apply, RUN_SETUP_GENTLY },
 	{ "archive", cmd_archive, RUN_SETUP_GENTLY },
-	{ "bisect--helper", cmd_bisect__helper, RUN_SETUP },
+	{ "bisect", cmd_bisect, RUN_SETUP },
 	{ "blame", cmd_blame, RUN_SETUP },
 	{ "branch", cmd_branch, RUN_SETUP | DELAY_PAGER_CONFIG },
-	{ "bundle", cmd_bundle, RUN_SETUP_GENTLY | NO_PARSEOPT },
+	{ "bugreport", cmd_bugreport, RUN_SETUP_GENTLY },
+	{ "bundle", cmd_bundle, RUN_SETUP_GENTLY },
 	{ "cat-file", cmd_cat_file, RUN_SETUP },
 	{ "check-attr", cmd_check_attr, RUN_SETUP },
 	{ "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE },
 	{ "check-mailmap", cmd_check_mailmap, RUN_SETUP },
 	{ "check-ref-format", cmd_check_ref_format, NO_PARSEOPT  },
 	{ "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
+	{ "checkout--worker", cmd_checkout__worker,
+		RUN_SETUP | NEED_WORK_TREE },
 	{ "checkout-index", cmd_checkout_index,
 		RUN_SETUP | NEED_WORK_TREE},
 	{ "cherry", cmd_cherry, RUN_SETUP },
@@ -495,30 +517,37 @@ static struct cmd_struct commands[] = {
 	{ "column", cmd_column, RUN_SETUP_GENTLY },
 	{ "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE },
 	{ "commit-graph", cmd_commit_graph, RUN_SETUP },
-	{ "commit-tree", cmd_commit_tree, RUN_SETUP | NO_PARSEOPT },
+	{ "commit-tree", cmd_commit_tree, RUN_SETUP },
 	{ "config", cmd_config, RUN_SETUP_GENTLY | DELAY_PAGER_CONFIG },
 	{ "count-objects", cmd_count_objects, RUN_SETUP },
 	{ "credential", cmd_credential, RUN_SETUP_GENTLY | NO_PARSEOPT },
+	{ "credential-cache", cmd_credential_cache },
+	{ "credential-cache--daemon", cmd_credential_cache_daemon },
+	{ "credential-store", cmd_credential_store },
 	{ "describe", cmd_describe, RUN_SETUP },
+	{ "diagnose", cmd_diagnose, RUN_SETUP_GENTLY },
 	{ "diff", cmd_diff, NO_PARSEOPT },
 	{ "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
 	{ "diff-index", cmd_diff_index, RUN_SETUP | NO_PARSEOPT },
 	{ "diff-tree", cmd_diff_tree, RUN_SETUP | NO_PARSEOPT },
 	{ "difftool", cmd_difftool, RUN_SETUP_GENTLY },
-	{ "env--helper", cmd_env__helper },
 	{ "fast-export", cmd_fast_export, RUN_SETUP },
+	{ "fast-import", cmd_fast_import, RUN_SETUP | NO_PARSEOPT },
 	{ "fetch", cmd_fetch, RUN_SETUP },
 	{ "fetch-pack", cmd_fetch_pack, RUN_SETUP | NO_PARSEOPT },
 	{ "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
 	{ "for-each-ref", cmd_for_each_ref, RUN_SETUP },
+	{ "for-each-repo", cmd_for_each_repo, RUN_SETUP_GENTLY },
 	{ "format-patch", cmd_format_patch, RUN_SETUP },
 	{ "fsck", cmd_fsck, RUN_SETUP },
 	{ "fsck-objects", cmd_fsck, RUN_SETUP },
+	{ "fsmonitor--daemon", cmd_fsmonitor__daemon, RUN_SETUP },
 	{ "gc", cmd_gc, RUN_SETUP },
 	{ "get-tar-commit-id", cmd_get_tar_commit_id, NO_PARSEOPT },
 	{ "grep", cmd_grep, RUN_SETUP_GENTLY },
 	{ "hash-object", cmd_hash_object },
 	{ "help", cmd_help },
+	{ "hook", cmd_hook, RUN_SETUP },
 	{ "index-pack", cmd_index_pack, RUN_SETUP_GENTLY | NO_PARSEOPT },
 	{ "init", cmd_init_db },
 	{ "init-db", cmd_init_db },
@@ -527,8 +556,9 @@ static struct cmd_struct commands[] = {
 	{ "ls-files", cmd_ls_files, RUN_SETUP },
 	{ "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
 	{ "ls-tree", cmd_ls_tree, RUN_SETUP },
-	{ "mailinfo", cmd_mailinfo, RUN_SETUP_GENTLY | NO_PARSEOPT },
+	{ "mailinfo", cmd_mailinfo, RUN_SETUP_GENTLY },
 	{ "mailsplit", cmd_mailsplit, NO_PARSEOPT },
+	{ "maintenance", cmd_maintenance, RUN_SETUP },
 	{ "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
 	{ "merge-base", cmd_merge_base, RUN_SETUP },
 	{ "merge-file", cmd_merge_file, RUN_SETUP_GENTLY },
@@ -538,10 +568,10 @@ static struct cmd_struct commands[] = {
 	{ "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
 	{ "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
 	{ "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
-	{ "merge-tree", cmd_merge_tree, RUN_SETUP | NO_PARSEOPT },
-	{ "mktag", cmd_mktag, RUN_SETUP | NO_PARSEOPT },
+	{ "merge-tree", cmd_merge_tree, RUN_SETUP },
+	{ "mktag", cmd_mktag, RUN_SETUP },
 	{ "mktree", cmd_mktree, RUN_SETUP },
-	{ "multi-pack-index", cmd_multi_pack_index, RUN_SETUP_GENTLY },
+	{ "multi-pack-index", cmd_multi_pack_index, RUN_SETUP },
 	{ "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
 	{ "name-rev", cmd_name_rev, RUN_SETUP },
 	{ "notes", cmd_notes, RUN_SETUP },
@@ -555,9 +585,8 @@ static struct cmd_struct commands[] = {
 	{ "pull", cmd_pull, RUN_SETUP | NEED_WORK_TREE },
 	{ "push", cmd_push, RUN_SETUP },
 	{ "range-diff", cmd_range_diff, RUN_SETUP | USE_PAGER },
-	{ "read-tree", cmd_read_tree, RUN_SETUP | SUPPORT_SUPER_PREFIX},
+	{ "read-tree", cmd_read_tree, RUN_SETUP },
 	{ "rebase", cmd_rebase, RUN_SETUP | NEED_WORK_TREE },
-	{ "rebase--interactive", cmd_rebase__interactive, RUN_SETUP | NEED_WORK_TREE },
 	{ "receive-pack", cmd_receive_pack },
 	{ "reflog", cmd_reflog, RUN_SETUP },
 	{ "remote", cmd_remote, RUN_SETUP },
@@ -565,6 +594,7 @@ static struct cmd_struct commands[] = {
 	{ "remote-fd", cmd_remote_fd, NO_PARSEOPT },
 	{ "repack", cmd_repack, RUN_SETUP },
 	{ "replace", cmd_replace, RUN_SETUP },
+	{ "replay", cmd_replay, RUN_SETUP },
 	{ "rerere", cmd_rerere, RUN_SETUP },
 	{ "reset", cmd_reset, RUN_SETUP },
 	{ "restore", cmd_restore, RUN_SETUP | NEED_WORK_TREE },
@@ -578,12 +608,12 @@ static struct cmd_struct commands[] = {
 	{ "show-branch", cmd_show_branch, RUN_SETUP },
 	{ "show-index", cmd_show_index, RUN_SETUP_GENTLY },
 	{ "show-ref", cmd_show_ref, RUN_SETUP },
-	{ "sparse-checkout", cmd_sparse_checkout, RUN_SETUP | NEED_WORK_TREE },
+	{ "sparse-checkout", cmd_sparse_checkout, RUN_SETUP },
 	{ "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
 	{ "stash", cmd_stash, RUN_SETUP | NEED_WORK_TREE },
 	{ "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
 	{ "stripspace", cmd_stripspace },
-	{ "submodule--helper", cmd_submodule__helper, RUN_SETUP | SUPPORT_SUPER_PREFIX | NO_PARSEOPT },
+	{ "submodule--helper", cmd_submodule__helper, RUN_SETUP },
 	{ "switch", cmd_switch, RUN_SETUP | NEED_WORK_TREE },
 	{ "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
 	{ "tag", cmd_tag, RUN_SETUP | DELAY_PAGER_CONFIG },
@@ -601,7 +631,7 @@ static struct cmd_struct commands[] = {
 	{ "verify-tag", cmd_verify_tag, RUN_SETUP },
 	{ "version", cmd_version },
 	{ "whatchanged", cmd_whatchanged, RUN_SETUP },
-	{ "worktree", cmd_worktree, RUN_SETUP | NO_PARSEOPT },
+	{ "worktree", cmd_worktree, RUN_SETUP },
 	{ "write-tree", cmd_write_tree, RUN_SETUP },
 };
 
@@ -632,6 +662,25 @@ static void list_builtins(struct string_list *out, unsigned int exclude_option)
 	}
 }
 
+void load_builtin_commands(const char *prefix, struct cmdnames *cmds)
+{
+	const char *name;
+	int i;
+
+	/*
+	 * Callers can ask for a subset of the commands based on a certain
+	 * prefix, which is then dropped from the added names. The names in
+	 * the `commands[]` array do not have the `git-` prefix, though,
+	 * therefore we must expect the `prefix` to at least start with `git-`.
+	 */
+	if (!skip_prefix(prefix, "git-", &prefix))
+		BUG("prefix '%s' must start with 'git-'", prefix);
+
+	for (i = 0; i < ARRAY_SIZE(commands); i++)
+		if (skip_prefix(commands[i].cmd, prefix, &name))
+			add_cmdname(cmds, name, strlen(name));
+}
+
 #ifdef STRIP_EXTENSION
 static void strip_extension(const char **argv)
 {
@@ -646,7 +695,7 @@ static void strip_extension(const char **argv)
 
 static void handle_builtin(int argc, const char **argv)
 {
-	struct argv_array args = ARGV_ARRAY_INIT;
+	struct strvec args = STRVEC_INIT;
 	const char *cmd;
 	struct cmd_struct *builtin;
 
@@ -661,19 +710,19 @@ static void handle_builtin(int argc, const char **argv)
 		argv[0] = cmd = "help";
 
 		for (i = 0; i < argc; i++) {
-			argv_array_push(&args, argv[i]);
+			strvec_push(&args, argv[i]);
 			if (!i)
-				argv_array_push(&args, "--exclude-guides");
+				strvec_push(&args, "--exclude-guides");
 		}
 
 		argc++;
-		argv = args.argv;
+		argv = args.v;
 	}
 
 	builtin = get_builtin(cmd);
 	if (builtin)
 		exit(run_builtin(builtin, argc, argv));
-	argv_array_clear(&args);
+	strvec_clear(&args);
 }
 
 static void execv_dashed_external(const char **argv)
@@ -681,15 +730,12 @@ static void execv_dashed_external(const char **argv)
 	struct child_process cmd = CHILD_PROCESS_INIT;
 	int status;
 
-	if (get_super_prefix())
-		die(_("%s doesn't support --super-prefix"), argv[0]);
-
 	if (use_pager == -1 && !is_builtin(argv[0]))
 		use_pager = check_pager_config(argv[0]);
 	commit_pager_choice();
 
-	argv_array_pushf(&cmd.args, "git-%s", argv[0]);
-	argv_array_pushv(&cmd.args, argv + 1);
+	strvec_pushf(&cmd.args, "git-%s", argv[0]);
+	strvec_pushv(&cmd.args, argv + 1);
 	cmd.clean_on_exit = 1;
 	cmd.wait_after_clean = 1;
 	cmd.silent_exec_failure = 1;
@@ -701,7 +747,7 @@ static void execv_dashed_external(const char **argv)
 	 * The code in run_command() logs trace2 child_start/child_exit
 	 * events, so we do not need to report exec/exec_result events here.
 	 */
-	trace_argv_printf(cmd.args.argv, "trace: exec:");
+	trace_argv_printf(cmd.args.v, "trace: exec:");
 
 	/*
 	 * If we fail because the command is not found, it is
@@ -741,7 +787,7 @@ static int run_argv(int *argcp, const char ***argv)
 		if (!done_alias)
 			handle_builtin(*argcp, *argv);
 		else if (get_builtin(**argv)) {
-			struct argv_array args = ARGV_ARRAY_INIT;
+			struct child_process cmd = CHILD_PROCESS_INIT;
 			int i;
 
 			/*
@@ -753,23 +799,23 @@ static int run_argv(int *argcp, const char ***argv)
 			 */
 			trace2_cmd_name("_run_git_alias_");
 
-			if (get_super_prefix())
-				die("%s doesn't support --super-prefix", **argv);
-
 			commit_pager_choice();
 
-			argv_array_push(&args, "git");
+			strvec_push(&cmd.args, "git");
 			for (i = 0; i < *argcp; i++)
-				argv_array_push(&args, (*argv)[i]);
+				strvec_push(&cmd.args, (*argv)[i]);
 
-			trace_argv_printf(args.argv, "trace: exec:");
+			trace_argv_printf(cmd.args.v, "trace: exec:");
 
 			/*
 			 * if we fail because the command is not found, it is
 			 * OK to return. Otherwise, we just pass along the status code.
 			 */
-			i = run_command_v_opt_tr2(args.argv, RUN_SILENT_EXEC_FAILURE |
-						  RUN_CLEAN_ON_EXIT | RUN_WAIT_AFTER_CLEAN, "git_alias");
+			cmd.silent_exec_failure = 1;
+			cmd.clean_on_exit = 1;
+			cmd.wait_after_clean = 1;
+			cmd.trace2_child_class = "git_alias";
+			i = run_command(&cmd);
 			if (i >= 0 || errno != ENOENT)
 				exit(i);
 			die("could not execute builtin %s", **argv);
@@ -848,10 +894,8 @@ int cmd_main(int argc, const char **argv)
 	argv++;
 	argc--;
 	handle_options(&argv, &argc, NULL);
-	if (argc > 0) {
-		/* translate --help and --version into commands */
-		skip_prefix(argv[0], "--", &argv[0]);
-	} else {
+
+	if (!argc) {
 		/* The user didn't specify a command; give them help */
 		commit_pager_choice();
 		printf(_("usage: %s\n\n"), git_usage_string);
@@ -859,6 +903,12 @@ int cmd_main(int argc, const char **argv)
 		printf("\n%s\n", _(git_more_info_string));
 		exit(1);
 	}
+
+	if (!strcmp("--version", argv[0]) || !strcmp("-v", argv[0]))
+		argv[0] = "version";
+	else if (!strcmp("--help", argv[0]) || !strcmp("-h", argv[0]))
+		argv[0] = "help";
+
 	cmd = argv[0];
 
 	/*