[PATCH 0/9] "git status" that is not "git commit --dry-run"

@@ -9,7 +9,7 @@ SYNOPSIS
 --------
 [verse]
 'git commit' [-a | --interactive] [-s] [-v] [-u<mode>] [--amend] [--dry-run]
-	   [(-c | -C) <commit>] [-F <file> | -m <msg>]
+	   [(-c | -C) <commit>] [-F <file> | -m <msg>] [--dry-run]
 	   [--allow-empty] [--no-verify] [-e] [--author=<author>]
 	   [--cleanup=<mode>] [--] [[-i | -o ]<file>...]
 

@@ -42,10 +42,9 @@ The content to be added can be specified in several ways:
    by one which files should be part of the commit, before finalizing the
    operation.  Currently, this is done by invoking 'git-add --interactive'.
 
-The 'git-status' command can be used to obtain a
+The `--dry-run` option can be used to obtain a
 summary of what is included by any of the above for the next
-commit by giving the same set of parameters you would give to
-this command.
+commit by giving the same set of parameters (options and paths).
 
 If you make a commit and then find a mistake immediately after
 that, you can recover from it with 'git-reset'.

@@ -70,6 +69,12 @@ OPTIONS
 	Like '-C', but with '-c' the editor is invoked, so that
 	the user can further edit the commit message.
 
+--dry-run::
+	Do not actually make a commit, but show the list of paths
+	with updates in the index, paths with changes in the work tree,
+	and paths that are untracked, similar to the one that is given
+	in the commit log editor.
+
 -F <file>::
 --file=<file>::
 	Take the commit message from the given file.  Use '-' to

@@ -979,9 +979,11 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 
 	argc = parse_and_validate_options(argc, argv, builtin_commit_usage,
 					  prefix, &s);
-	if (dry_run)
+	if (dry_run) {
+		if (diff_use_color_default == -1)
+			diff_use_color_default = git_use_color_default;
 		return dry_run_commit(argc, argv, prefix, &s);
-
+	}
 	index_file = prepare_index(argc, argv, prefix, 0);
 
 	/* Set up everything for writing the commit object.  This includes

@@ -922,6 +922,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
 	s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
 	wt_status_collect(&s);
 
+	if (s.relative_paths)
+		s.prefix = prefix;
 	if (s.use_color == -1)
 		s.use_color = git_use_color_default;
 	if (diff_use_color_default == -1)

@@ -378,6 +378,7 @@ BUILT_INS += git-init$X
 BUILT_INS += git-merge-subtree$X
 BUILT_INS += git-peek-remote$X
 BUILT_INS += git-repo-config$X
+BUILT_INS += git-stat$X
 BUILT_INS += git-show$X
 BUILT_INS += git-stage$X
 BUILT_INS += git-status$X

@@ -24,6 +24,7 @@
 #include "string-list.h"
 #include "rerere.h"
 #include "unpack-trees.h"
+#include "quote.h"
 
 static const char * const builtin_commit_usage[] = {
 	"git commit [options] [--] <filepattern>...",

@@ -35,6 +36,11 @@ static const char * const builtin_status_usage[] = {
 	NULL
 };
 
+static const char * const builtin_stat_usage[] = {
+	"git stat [options]",
+	NULL
+};
+
 static unsigned char head_sha1[20], merge_head_sha1[20];
 static char *use_message_buffer;
 static const char commit_editmsg[] = "COMMIT_EDITMSG";

@@ -691,6 +697,21 @@ static const char *find_author_by_nickname(const char *name)
 	die("No existing author found with '%s'", name);
 }
 
+
+static void handle_untracked_files_arg(struct wt_status *s)
+{
+	if (!untracked_files_arg)
+		; /* default already initialized */
+	else if (!strcmp(untracked_files_arg, "no"))
+		s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
+	else if (!strcmp(untracked_files_arg, "normal"))
+		s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
+	else if (!strcmp(untracked_files_arg, "all"))
+		s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
+	else
+		die("Invalid untracked files mode '%s'", untracked_files_arg);
+}
+
 static int parse_and_validate_options(int argc, const char *argv[],
 				      const char * const usage[],
 				      const char *prefix,

@@ -794,16 +815,7 @@ static int parse_and_validate_options(int argc, const char *argv[],
 	else
 		die("Invalid cleanup mode %s", cleanup_arg);
 
-	if (!untracked_files_arg)
-		; /* default already initialized */
-	else if (!strcmp(untracked_files_arg, "no"))
-		s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
-	else if (!strcmp(untracked_files_arg, "normal"))
-		s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
-	else if (!strcmp(untracked_files_arg, "all"))
-		s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
-	else
-		die("Invalid untracked files mode '%s'", untracked_files_arg);
+	handle_untracked_files_arg(s);
 
 	if (all && argc > 0)
 		die("Paths with -a does not make sense.");

@@ -886,6 +898,38 @@ static int git_status_config(const char *k, const char *v, void *cb)
 	return git_diff_ui_config(k, v, NULL);
 }
 
+int cmd_stat(int argc, const char **argv, const char *prefix)
+{
+	struct wt_status s;
+	unsigned char sha1[20];
+	static struct option builtin_stat_options[] = {
+		{ OPTION_STRING, 'u', "untracked-files", &untracked_files_arg,
+		  "mode",
+		  "show untracked files, optional modes: all, normal, no. (Default: all)",
+		  PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
+		OPT_END(),
+	};
+
+	wt_status_prepare(&s);
+	git_config(git_status_config, &s);
+	argc = parse_options(argc, argv, prefix,
+			     builtin_stat_options,
+			     builtin_stat_usage, 0);
+	handle_untracked_files_arg(&s);
+
+	read_cache();
+	refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);
+	s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
+	wt_status_collect(&s);
+
+	if (s.use_color == -1)
+		s.use_color = git_use_color_default;
+	if (diff_use_color_default == -1)
+		diff_use_color_default = git_use_color_default;
+	wt_status_print_body(&s);
+	return 0;
+}
+
 int cmd_status(int argc, const char **argv, const char *prefix)
 {
 	struct wt_status s;

@@ -95,6 +95,7 @@ extern int cmd_send_pack(int argc, const char **argv, const char *prefix);
 extern int cmd_shortlog(int argc, const char **argv, const char *prefix);
 extern int cmd_show(int argc, const char **argv, const char *prefix);
 extern int cmd_show_branch(int argc, const char **argv, const char *prefix);
+extern int cmd_stat(int argc, const char **argv, const char *prefix);
 extern int cmd_status(int argc, const char **argv, const char *prefix);
 extern int cmd_stripspace(int argc, const char **argv, const char *prefix);
 extern int cmd_symbolic_ref(int argc, const char **argv, const char *prefix);

@@ -350,6 +350,7 @@ static void handle_internal_command(int argc, const char **argv)
 		{ "shortlog", cmd_shortlog, USE_PAGER },
 		{ "show-branch", cmd_show_branch, RUN_SETUP },
 		{ "show", cmd_show, RUN_SETUP | USE_PAGER },
+		{ "stat", cmd_stat, RUN_SETUP | NEED_WORK_TREE },
 		{ "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
 		{ "stripspace", cmd_stripspace },
 		{ "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },

@@ -531,6 +531,19 @@ static void wt_status_print_tracking(struct wt_status *s)
 	color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
 }
 
+void wt_status_print_body(struct wt_status *s)
+{
+	wt_status_print_unmerged(s);
+	wt_status_print_updated(s);
+	wt_status_print_changed(s);
+	if (s->submodule_summary)
+		wt_status_print_submodule_summary(s);
+	if (s->show_untracked_files)
+		wt_status_print_untracked(s);
+	else if (s->commitable)
+		 fprintf(s->fp, "# Untracked files not listed (use -u option to show untracked files)\n");
+}
+
 void wt_status_print(struct wt_status *s)
 {
 	unsigned char sha1[20];

@@ -561,15 +574,7 @@ void wt_status_print(struct wt_status *s)
 		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
 	}
 
-	wt_status_print_unmerged(s);
-	wt_status_print_updated(s);
-	wt_status_print_changed(s);
-	if (s->submodule_summary)
-		wt_status_print_submodule_summary(s);
-	if (s->show_untracked_files)
-		wt_status_print_untracked(s);
-	else if (s->commitable)
-		 fprintf(s->fp, "# Untracked files not listed (use -u option to show untracked files)\n");
+	wt_status_print_body(s);
 
 	if (s->verbose)
 		wt_status_print_verbose(s);

@@ -54,5 +54,6 @@ struct wt_status {
 void wt_status_prepare(struct wt_status *s);
 void wt_status_print(struct wt_status *s);
 void wt_status_collect(struct wt_status *s);
+void wt_status_print_body(struct wt_status *s);
 
 #endif /* STATUS_H */

@@ -922,6 +922,9 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
 			     builtin_stat_usage, 0);
 	handle_untracked_files_arg(&s);
 
+	if (*argv)
+		s.pathspec = get_pathspec(prefix, argv);
+
 	read_cache();
 	refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);
 	s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;

@@ -269,6 +269,7 @@ static void wt_status_collect_changes_worktree(struct wt_status *s)
 	rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 	rev.diffopt.format_callback = wt_status_collect_changed_cb;
 	rev.diffopt.format_callback_data = s;
+	rev.prune_data = s->pathspec;
 	run_diff_files(&rev, 0);
 }
 

@@ -285,6 +286,7 @@ static void wt_status_collect_changes_index(struct wt_status *s)
 	rev.diffopt.detect_rename = 1;
 	rev.diffopt.rename_limit = 200;
 	rev.diffopt.break_opt = 0;
+	rev.prune_data = s->pathspec;
 	run_diff_index(&rev, 1);
 }
 

@@ -297,6 +299,8 @@ static void wt_status_collect_changes_initial(struct wt_status *s)
 		struct wt_status_change_data *d;
 		struct cache_entry *ce = active_cache[i];
 
+		if (!ce_path_match(ce, s->pathspec))
+			continue;
 		it = string_list_insert(ce->name, &s->change);
 		d = it->util;
 		if (!d) {

@@ -330,6 +334,8 @@ static void wt_status_collect_untracked(struct wt_status *s)
 		struct dir_entry *ent = dir.entries[i];
 		if (!cache_name_is_other(ent->name, ent->len))
 			continue;
+		if (!match_pathspec(s->pathspec, ent->name, ent->len, 0, NULL))
+			continue;
 		s->workdir_untracked = 1;
 		string_list_insert(ent->name, &s->untracked);
 	}

@@ -31,6 +31,7 @@ struct wt_status {
 	int is_initial;
 	char *branch;
 	const char *reference;
+	const char **pathspec;
 	int verbose;
 	int amend;
 	int nowarn;

@@ -8,7 +8,7 @@ git-status - Show the working tree status
 
 SYNOPSIS
 --------
-'git status' <options>...
+'git status' [<options>...] [--] [<pathspec>...]
 
 DESCRIPTION
 -----------

@@ -20,25 +20,85 @@ are what you _would_ commit by running `git commit`; the second and
 third are what you _could_ commit by running 'git-add' before running
 `git commit`.
 
-The command takes the same set of options as 'git-commit'; it
-shows what would be committed if the same options are given to
-'git-commit'.
-
-If there is no path that is different between the index file and
-the current HEAD commit (i.e., there is nothing to commit by running
-`git commit`), the command exits with non-zero status.
+OPTIONS
+-------
+
+-s::
+--short::
+	Give the output in the short-format.
+
+-u[<mode>]::
+--untracked-files[=<mode>]::
+	Show untracked files (Default: 'all').
++
+The mode parameter is optional, and is used to specify
+the handling of untracked files. The possible options are:
++
+--
+	- 'no'     - Show no untracked files
+	- 'normal' - Shows untracked files and directories
+	- 'all'    - Also shows individual files in untracked directories.
+--
++
+See linkgit:git-config[1] for configuration variable
+used to change the default for when the option is not
+specified.
+
+-z::
+	Terminate entries with NUL, instead of LF.  This implies `-s`
+	(short status) output format.
 
 
 OUTPUT
 ------
 The output from this command is designed to be used as a commit
 template comment, and all the output lines are prefixed with '#'.
+The default, long format, is designed to be human readable,
+verbose and descriptive.  They are subject to change in any time.
 
 The paths mentioned in the output, unlike many other git commands, are
 made relative to the current directory if you are working in a
 subdirectory (this is on purpose, to help cutting and pasting). See
 the status.relativePaths config option below.
 
+In short-format, the status of each path is shown as
+
+	XY PATH1 -> PATH2
+
+where `PATH1` is the path in the `HEAD`, and ` -> PATH2` part is
+shown only when `PATH1` corresponds to a different path in the
+index/worktree (i.e. renamed).
+
+For unmerged entries, `X` shows the status of stage #2 (i.e. ours) and `Y`
+shows the status of stage #3 (i.e. theirs).
+
+For entries that do not have conflicts, `X` shows the status of the index,
+and `Y` shows the status of the work tree.  For untracked paths, `XY` are
+`??`.
+
+    X          Y     Meaning
+    -------------------------------------------------
+              [MD]   not updated
+    M        [ MD]   updated in index
+    A        [ MD]   added to index
+    D        [ MD]   deleted from index
+    R        [ MD]   renamed in index
+    C        [ MD]   copied in index
+    [MARC]           index and work tree matches
+    [ MARC]     M    work tree changed since index
+    [ MARC]     D    deleted in work tree
+    -------------------------------------------------
+    D           D    unmerged, both deleted
+    A           U    unmerged, added by us
+    U           D    unmerged, deleted by them
+    U           A    unmerged, added by them
+    D           U    unmerged, deleted by us
+    A           A    unmerged, both added
+    U           U    unmerged, both modified
+    -------------------------------------------------
+    ?           ?    untracked
+    -------------------------------------------------
+
 
 CONFIGURATION
 -------------

@@ -63,8 +123,7 @@ linkgit:gitignore[5]
 
 Author
 ------
-Written by Linus Torvalds <torvalds@osdl.org> and
-Junio C Hamano <gitster@pobox.com>.
+Written by Junio C Hamano <gitster@pobox.com>.
 
 Documentation
 --------------

@@ -36,11 +36,6 @@ static const char * const builtin_status_usage[] = {
 	NULL
 };
 
-static const char * const builtin_stat_usage[] = {
-	"git stat [options]",
-	NULL
-};
-
 static unsigned char head_sha1[20], merge_head_sha1[20];
 static char *use_message_buffer;
 static const char commit_editmsg[] = "COMMIT_EDITMSG";

@@ -971,13 +966,13 @@ static void short_untracked(int null_termination, struct string_list_item *it,
 	}
 }
 
-int cmd_stat(int argc, const char **argv, const char *prefix)
+int cmd_status(int argc, const char **argv, const char *prefix)
 {
 	struct wt_status s;
 	static int null_termination, shortstatus;
 	int i;
 	unsigned char sha1[20];
-	static struct option builtin_stat_options[] = {
+	static struct option builtin_status_options[] = {
 		OPT__VERBOSE(&verbose),
 		OPT_BOOLEAN('s', "short", &shortstatus,
 			    "show status concicely"),

@@ -996,8 +991,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
 	wt_status_prepare(&s);
 	git_config(git_status_config, &s);
 	argc = parse_options(argc, argv, prefix,
-			     builtin_stat_options,
-			     builtin_stat_usage, 0);
+			     builtin_status_options,
+			     builtin_status_usage, 0);
 	handle_untracked_files_arg(&s);
 
 	if (*argv)

@@ -1039,22 +1034,6 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
 	return 0;
 }
 
-int cmd_status(int argc, const char **argv, const char *prefix)
-{
-	struct wt_status s;
-
-	wt_status_prepare(&s);
-	git_config(git_status_config, &s);
-	if (s.use_color == -1)
-		s.use_color = git_use_color_default;
-	if (diff_use_color_default == -1)
-		diff_use_color_default = git_use_color_default;
-
-	argc = parse_and_validate_options(argc, argv, builtin_status_usage,
-					  prefix, &s);
-	return dry_run_commit(argc, argv, prefix, &s);
-}
-
 static void print_summary(const char *prefix, const unsigned char *sha1)
 {
 	struct rev_info rev;

@@ -95,7 +95,6 @@ extern int cmd_send_pack(int argc, const char **argv, const char *prefix);
 extern int cmd_shortlog(int argc, const char **argv, const char *prefix);
 extern int cmd_show(int argc, const char **argv, const char *prefix);
 extern int cmd_show_branch(int argc, const char **argv, const char *prefix);
-extern int cmd_stat(int argc, const char **argv, const char *prefix);
 extern int cmd_status(int argc, const char **argv, const char *prefix);
 extern int cmd_stripspace(int argc, const char **argv, const char *prefix);
 extern int cmd_symbolic_ref(int argc, const char **argv, const char *prefix);

@@ -350,7 +350,6 @@ static void handle_internal_command(int argc, const char **argv)
 		{ "shortlog", cmd_shortlog, USE_PAGER },
 		{ "show-branch", cmd_show_branch, RUN_SETUP },
 		{ "show", cmd_show, RUN_SETUP | USE_PAGER },
-		{ "stat", cmd_stat, RUN_SETUP | NEED_WORK_TREE },
 		{ "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
 		{ "stripspace", cmd_stripspace },
 		{ "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },

@@ -352,6 +352,8 @@ static char *prepare_index(int argc, const char **argv, const char *prefix, int
 static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
 		      struct wt_status *s)
 {
+	unsigned char sha1[20];
+
 	if (s->relative_paths)
 		s->prefix = prefix;
 

@@ -363,7 +365,9 @@ static int run_status(FILE *fp, const char *index_file, const char *prefix, int
 	s->index_file = index_file;
 	s->fp = fp;
 	s->nowarn = nowarn;
+	s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 
+	wt_status_collect(s);
 	wt_status_print(s);
 
 	return s->commitable;

@@ -903,6 +907,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
 	struct wt_status s;
 	unsigned char sha1[20];
 	static struct option builtin_stat_options[] = {
+		OPT__VERBOSE(&verbose),
 		{ OPTION_STRING, 'u', "untracked-files", &untracked_files_arg,
 		  "mode",
 		  "show untracked files, optional modes: all, normal, no. (Default: all)",

@@ -922,13 +927,14 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
 	s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
 	wt_status_collect(&s);
 
+	s.verbose = verbose;
 	if (s.relative_paths)
 		s.prefix = prefix;
 	if (s.use_color == -1)
 		s.use_color = git_use_color_default;
 	if (diff_use_color_default == -1)
 		diff_use_color_default = git_use_color_default;
-	wt_status_print_body(&s);
+	wt_status_print(&s);
 	return 0;
 }
 

@@ -531,25 +531,10 @@ static void wt_status_print_tracking(struct wt_status *s)
 	color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
 }
 
-void wt_status_print_body(struct wt_status *s)
-{
-	wt_status_print_unmerged(s);
-	wt_status_print_updated(s);
-	wt_status_print_changed(s);
-	if (s->submodule_summary)
-		wt_status_print_submodule_summary(s);
-	if (s->show_untracked_files)
-		wt_status_print_untracked(s);
-	else if (s->commitable)
-		 fprintf(s->fp, "# Untracked files not listed (use -u option to show untracked files)\n");
-}
-
 void wt_status_print(struct wt_status *s)
 {
-	unsigned char sha1[20];
 	const char *branch_color = color(WT_STATUS_HEADER, s);
 
-	s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 	if (s->branch) {
 		const char *on_what = "On branch ";
 		const char *branch_name = s->branch;

@@ -566,15 +551,21 @@ void wt_status_print(struct wt_status *s)
 			wt_status_print_tracking(s);
 	}
 
-	wt_status_collect(s);
-
 	if (s->is_initial) {
 		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
 		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "# Initial commit");
 		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
 	}
 
-	wt_status_print_body(s);
+	wt_status_print_unmerged(s);
+	wt_status_print_updated(s);
+	wt_status_print_changed(s);
+	if (s->submodule_summary)
+		wt_status_print_submodule_summary(s);
+	if (s->show_untracked_files)
+		wt_status_print_untracked(s);
+	else if (s->commitable)
+		 fprintf(s->fp, "# Untracked files not listed (use -u option to show untracked files)\n");
 
 	if (s->verbose)
 		wt_status_print_verbose(s);

@@ -54,6 +54,5 @@ struct wt_status {
 void wt_status_prepare(struct wt_status *s);
 void wt_status_print(struct wt_status *s);
 void wt_status_collect(struct wt_status *s);
-void wt_status_print_body(struct wt_status *s);
 
 #endif /* STATUS_H */

@@ -69,7 +69,7 @@ test_expect_success 'status' '
 		cd test &&
 		git checkout b1 >/dev/null &&
 		# reports nothing to commit
-		test_must_fail git status
+		test_must_fail git commit --dry-run
 	) >actual &&
 	grep "have 1 and 1 different" actual
 '

@@ -50,9 +50,11 @@ test_expect_success 'M/D conflict does not segfault' '
 		git rm foo &&
 		git commit -m delete &&
 		test_must_fail git merge master &&
-		test_must_fail git status > ../actual
-	) &&
-	test_cmp expect actual
+		test_must_fail git commit --dry-run >../actual &&
+		test_cmp ../expect ../actual &&
+		git status >../actual &&
+		test_cmp ../expect ../actual
+	)
 '
 
 test_done

@@ -19,8 +19,8 @@ test_expect_success 'status clean' '
 	git status |
 	grep "nothing to commit"
 '
-test_expect_success 'status -a clean' '
-	git status -a |
+test_expect_success 'commit --dry-run -a clean' '
+	git commit --dry-run -a |
 	grep "nothing to commit"
 '
 test_expect_success 'rm submodule contents' '

@@ -31,7 +31,7 @@ test_expect_success 'status clean (empty submodule dir)' '
 	grep "nothing to commit"
 '
 test_expect_success 'status -a clean (empty submodule dir)' '
-	git status -a |
+	git commit --dry-run -a |
 	grep "nothing to commit"
 '
 

@@ -248,8 +248,8 @@ cat <<EOF >expect
 #	output
 #	untracked
 EOF
-test_expect_success 'status of partial commit excluding new file in index' '
-	git status dir1/modified >output &&
+test_expect_success 'dry-run of partial commit excluding new file in index' '
+	git commit --dry-run dir1/modified >output &&
 	test_cmp expect output
 '
 

@@ -358,7 +358,9 @@ EOF
 test_expect_success 'status submodule summary (clean submodule)' '
 	git commit -m "commit submodule" &&
 	git config status.submodulesummary 10 &&
-	test_must_fail git status >output &&
+	test_must_fail git commit --dry-run >output &&
+	test_cmp expect output &&
+	git status >output &&
 	test_cmp expect output
 '
 

@@ -391,9 +393,9 @@ cat >expect <<EOF
 #	output
 #	untracked
 EOF
-test_expect_success 'status submodule summary (--amend)' '
+test_expect_success 'commit --dry-run submodule summary (--amend)' '
 	git config status.submodulesummary 10 &&
-	git status --amend >output &&
+	git commit --dry-run --amend >output &&
 	test_cmp expect output
 '
 

@@ -902,12 +902,87 @@ static int git_status_config(const char *k, const char *v, void *cb)
 	return git_diff_ui_config(k, v, NULL);
 }
 
+#define quote_path quote_path_relative
+
+static void short_unmerged(int null_termination, struct string_list_item *it,
+			   struct wt_status *s)
+{
+	struct wt_status_change_data *d = it->util;
+	const char *how = "??";
+
+	switch (d->stagemask) {
+	case 1: how = "DD"; break; /* both deleted */
+	case 2: how = "AU"; break; /* added by us */
+	case 3: how = "UD"; break; /* deleted by them */
+	case 4: how = "UA"; break; /* added by them */
+	case 5: how = "DU"; break; /* deleted by us */
+	case 6: how = "AA"; break; /* both added */
+	case 7: how = "UU"; break; /* both modified */
+	}
+	printf("%s ", how);
+	if (null_termination) {
+		fprintf(stdout, "%s%c", it->string, 0);
+	} else {
+		struct strbuf onebuf = STRBUF_INIT;
+		const char *one;
+		one = quote_path(it->string, -1, &onebuf, s->prefix);
+		printf("%s\n", one);
+		strbuf_release(&onebuf);
+	}
+}
+
+static void short_status(int null_termination, struct string_list_item *it,
+			 struct wt_status *s)
+{
+	struct wt_status_change_data *d = it->util;
+
+	printf("%c%c ",
+	       !d->index_status ? ' ' : d->index_status,
+	       !d->worktree_status ? ' ' : d->worktree_status);
+	if (null_termination) {
+		fprintf(stdout, "%s%c", it->string, 0);
+		if (d->head_path)
+			fprintf(stdout, "%s%c", d->head_path, 0);
+	} else {
+		struct strbuf onebuf = STRBUF_INIT;
+		const char *one;
+		if (d->head_path) {
+			one = quote_path(d->head_path, -1, &onebuf, s->prefix);
+			printf("%s -> ", one);
+			strbuf_release(&onebuf);
+		}
+		one = quote_path(it->string, -1, &onebuf, s->prefix);
+		printf("%s\n", one);
+		strbuf_release(&onebuf);
+	}
+}
+
+static void short_untracked(int null_termination, struct string_list_item *it,
+			    struct wt_status *s)
+{
+	if (null_termination) {
+		fprintf(stdout, "?? %s%c", it->string, 0);
+	} else {
+		struct strbuf onebuf = STRBUF_INIT;
+		const char *one;
+		one = quote_path(it->string, -1, &onebuf, s->prefix);
+		printf("?? %s\n", one);
+		strbuf_release(&onebuf);
+	}
+}
+
 int cmd_stat(int argc, const char **argv, const char *prefix)
 {
 	struct wt_status s;
+	static int null_termination, shortstatus;
+	int i;
 	unsigned char sha1[20];
 	static struct option builtin_stat_options[] = {
 		OPT__VERBOSE(&verbose),
+		OPT_BOOLEAN('s', "short", &shortstatus,
+			    "show status concicely"),
+		OPT_BOOLEAN('z', "null", &null_termination,
+			    "terminate entries with NUL"),
 		{ OPTION_STRING, 'u', "untracked-files", &untracked_files_arg,
 		  "mode",
 		  "show untracked files, optional modes: all, normal, no. (Default: all)",

@@ -915,6 +990,9 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
 		OPT_END(),
 	};
 
+	if (null_termination)
+		shortstatus = 1;
+
 	wt_status_prepare(&s);
 	git_config(git_status_config, &s);
 	argc = parse_options(argc, argv, prefix,

@@ -930,14 +1008,34 @@ int cmd_stat(int argc, const char **argv, const char *prefix)
 	s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
 	wt_status_collect(&s);
 
-	s.verbose = verbose;
-	if (s.relative_paths)
-		s.prefix = prefix;
-	if (s.use_color == -1)
-		s.use_color = git_use_color_default;
-	if (diff_use_color_default == -1)
-		diff_use_color_default = git_use_color_default;
-	wt_status_print(&s);
+	if (shortstatus) {
+		for (i = 0; i < s.change.nr; i++) {
+			struct wt_status_change_data *d;
+			struct string_list_item *it;
+
+			it = &(s.change.items[i]);
+			d = it->util;
+			if (d->stagemask)
+				short_unmerged(null_termination, it, &s);
+			else
+				short_status(null_termination, it, &s);
+		}
+		for (i = 0; i < s.untracked.nr; i++) {
+			struct string_list_item *it;
+
+			it = &(s.untracked.items[i]);
+			short_untracked(null_termination, it, &s);
+		}
+	} else {
+		s.verbose = verbose;
+		if (s.relative_paths)
+			s.prefix = prefix;
+		if (s.use_color == -1)
+			s.use_color = git_use_color_default;
+		if (diff_use_color_default == -1)
+			diff_use_color_default = git_use_color_default;
+		wt_status_print(&s);
+	}
 	return 0;
 }
 

@@ -383,7 +383,6 @@ BUILT_INS += git-init$X
 BUILT_INS += git-merge-subtree$X
 BUILT_INS += git-peek-remote$X
 BUILT_INS += git-repo-config$X
-BUILT_INS += git-stat$X
 BUILT_INS += git-show$X
 BUILT_INS += git-stage$X
 BUILT_INS += git-status$X