text: #include "cache.h"
  #include "pathspec.h"
  #include "wt-status.h"
  #include "object.h"
  #include "dir.h"
  #include "commit.h"
  #include "diff.h"
  #include "revision.h"
  #include "diffcore.h"
  #include "quote.h"
  #include "run-command.h"
  #include "argv-array.h"
  #include "remote.h"
  #include "refs.h"
  #include "submodule.h"
  #include "column.h"
  #include "strbuf.h"
  #include "utf8.h"
  
  static const char cut_line[] =
  "------------------------ >8 ------------------------\n";
  
  static char default_wt_status_colors[][COLOR_MAXLEN] = {
  	GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
  	GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
  	GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
  	GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
  	GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
  	GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
  	GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
  	GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
  	GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
  };
  
  static const char *color(int slot, struct wt_status *s)
  {
  	const char *c = "";
  	if (want_color(s->use_color))
  		c = s->color_palette[slot];
  	if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
  		c = s->color_palette[WT_STATUS_HEADER];
  	return c;
  }
  
  static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
  		const char *fmt, va_list ap, const char *trail)
  {
  	struct strbuf sb = STRBUF_INIT;
  	struct strbuf linebuf = STRBUF_INIT;
  	const char *line, *eol;
  
  	strbuf_vaddf(&sb, fmt, ap);
  	if (!sb.len) {
  		if (s->display_comment_prefix) {
  			strbuf_addch(&sb, comment_line_char);
  			if (!trail)
  				strbuf_addch(&sb, ' ');
  		}
  		color_print_strbuf(s->fp, color, &sb);
  		if (trail)
  			fprintf(s->fp, "%s", trail);
  		strbuf_release(&sb);
  		return;
  	}
  	for (line = sb.buf; *line; line = eol + 1) {
  		eol = strchr(line, '\n');
  
  		strbuf_reset(&linebuf);
  		if (at_bol && s->display_comment_prefix) {
  			strbuf_addch(&linebuf, comment_line_char);
  			if (*line != '\n' && *line != '\t')
  				strbuf_addch(&linebuf, ' ');
  		}
  		if (eol)
  			strbuf_add(&linebuf, line, eol - line);
  		else
  			strbuf_addstr(&linebuf, line);
  		color_print_strbuf(s->fp, color, &linebuf);
  		if (eol)
  			fprintf(s->fp, "\n");
  		else
  			break;
  		at_bol = 1;
  	}
  	if (trail)
  		fprintf(s->fp, "%s", trail);
  	strbuf_release(&linebuf);
  	strbuf_release(&sb);
  }
  
  void status_printf_ln(struct wt_status *s, const char *color,
  			const char *fmt, ...)
  {
  	va_list ap;
  
  	va_start(ap, fmt);
  	status_vprintf(s, 1, color, fmt, ap, "\n");
  	va_end(ap);
  }
  
  void status_printf(struct wt_status *s, const char *color,
  			const char *fmt, ...)
  {
  	va_list ap;
  
  	va_start(ap, fmt);
  	status_vprintf(s, 1, color, fmt, ap, NULL);
  	va_end(ap);
  }
  
  static void status_printf_more(struct wt_status *s, const char *color,
  			       const char *fmt, ...)
  {
  	va_list ap;
  
  	va_start(ap, fmt);
  	status_vprintf(s, 0, color, fmt, ap, NULL);
  	va_end(ap);
  }
  
  void wt_status_prepare(struct wt_status *s)
  {
  	unsigned char sha1[20];
  
  	memset(s, 0, sizeof(*s));
  	memcpy(s->color_palette, default_wt_status_colors,
  	       sizeof(default_wt_status_colors));
  	s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
  	s->use_color = -1;
  	s->relative_paths = 1;
  	s->branch = resolve_refdup("HEAD", 0, sha1, NULL);
  	s->reference = "HEAD";
  	s->fp = stdout;
  	s->index_file = get_index_file();
  	s->change.strdup_strings = 1;
  	s->untracked.strdup_strings = 1;
  	s->ignored.strdup_strings = 1;
  	s->show_branch = -1;  /* unspecified */
  	s->display_comment_prefix = 0;
  }
  
  static void wt_status_print_unmerged_header(struct wt_status *s)
  {
  	int i;
  	int del_mod_conflict = 0;
  	int both_deleted = 0;
  	int not_deleted = 0;
  	const char *c = color(WT_STATUS_HEADER, s);
  
  	status_printf_ln(s, c, _("Unmerged paths:"));
  
  	for (i = 0; i < s->change.nr; i++) {
  		struct string_list_item *it = &(s->change.items[i]);
  		struct wt_status_change_data *d = it->util;
  
  		switch (d->stagemask) {
  		case 0:
  			break;
  		case 1:
  			both_deleted = 1;
  			break;
  		case 3:
  		case 5:
  			del_mod_conflict = 1;
  			break;
  		default:
  			not_deleted = 1;
  			break;
  		}
  	}
  
  	if (!s->hints)
  		return;
  	if (s->whence != FROM_COMMIT)
  		;
  	else if (!s->is_initial)
  		status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
  	else
  		status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
  
  	if (!both_deleted) {
  		if (!del_mod_conflict)
  			status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
  		else
  			status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
  	} else if (!del_mod_conflict && !not_deleted) {
  		status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
  	} else {
  		status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
  	}
  	status_printf_ln(s, c, "%s", "");
  }
  
  static void wt_status_print_cached_header(struct wt_status *s)
  {
  	const char *c = color(WT_STATUS_HEADER, s);
  
  	status_printf_ln(s, c, _("Changes to be committed:"));
  	if (!s->hints)
  		return;
  	if (s->whence != FROM_COMMIT)
  		; /* NEEDSWORK: use "git reset --unresolve"??? */
  	else if (!s->is_initial)
  		status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
  	else
  		status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
  	status_printf_ln(s, c, "%s", "");
  }
  
  static void wt_status_print_dirty_header(struct wt_status *s,
  					 int has_deleted,
  					 int has_dirty_submodules)
  {
  	const char *c = color(WT_STATUS_HEADER, s);
  
  	status_printf_ln(s, c, _("Changes not staged for commit:"));
  	if (!s->hints)
  		return;
  	if (!has_deleted)
  		status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
  	else
  		status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
  	status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
  	if (has_dirty_submodules)
  		status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
  	status_printf_ln(s, c, "%s", "");
  }
  
  static void wt_status_print_other_header(struct wt_status *s,
  					 const char *what,
  					 const char *how)
  {
  	const char *c = color(WT_STATUS_HEADER, s);
  	status_printf_ln(s, c, "%s:", what);
  	if (!s->hints)
  		return;
  	status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
  	status_printf_ln(s, c, "%s", "");
  }
  
  static void wt_status_print_trailer(struct wt_status *s)
  {
  	status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
  }
  
  #define quote_path quote_path_relative
  
  static const char *wt_status_unmerged_status_string(int stagemask)
  {
  	switch (stagemask) {
  	case 1:
  		return _("both deleted:");
  	case 2:
  		return _("added by us:");
  	case 3:
  		return _("deleted by them:");
  	case 4:
  		return _("added by them:");
  	case 5:
  		return _("deleted by us:");
  	case 6:
  		return _("both added:");
  	case 7:
  		return _("both modified:");
  	default:
  		die(_("bug: unhandled unmerged status %x"), stagemask);
  	}
  }
  
  static const char *wt_status_diff_status_string(int status)
  {
  	switch (status) {
  	case DIFF_STATUS_ADDED:
  		return _("new file:");
  	case DIFF_STATUS_COPIED:
  		return _("copied:");
  	case DIFF_STATUS_DELETED:
  		return _("deleted:");
  	case DIFF_STATUS_MODIFIED:
  		return _("modified:");
  	case DIFF_STATUS_RENAMED:
  		return _("renamed:");
  	case DIFF_STATUS_TYPE_CHANGED:
  		return _("typechange:");
  	case DIFF_STATUS_UNKNOWN:
  		return _("unknown:");
  	case DIFF_STATUS_UNMERGED:
  		return _("unmerged:");
  	default:
  		return NULL;
  	}
  }
  
  static int maxwidth(const char *(*label)(int), int minval, int maxval)
  {
  	int result = 0, i;
  
  	for (i = minval; i <= maxval; i++) {
  		const char *s = label(i);
  		int len = s ? utf8_strwidth(s) : 0;
  		if (len > result)
  			result = len;
  	}
  	return result;
  }
  
  static void wt_status_print_unmerged_data(struct wt_status *s,
  					  struct string_list_item *it)
  {
  	const char *c = color(WT_STATUS_UNMERGED, s);
  	struct wt_status_change_data *d = it->util;
  	struct strbuf onebuf = STRBUF_INIT;
  	static char *padding;
  	static int label_width;
  	const char *one, *how;
  	int len;
  
  	if (!padding) {
  		label_width = maxwidth(wt_status_unmerged_status_string, 1, 7);
  		label_width += strlen(" ");
  		padding = xmallocz(label_width);
  		memset(padding, ' ', label_width);
  	}
  
  	one = quote_path(it->string, s->prefix, &onebuf);
  	status_printf(s, color(WT_STATUS_HEADER, s), "\t");
  
  	how = wt_status_unmerged_status_string(d->stagemask);
  	len = label_width - utf8_strwidth(how);
  	status_printf_more(s, c, "%s%.*s%s\n", how, len, padding, one);
  	strbuf_release(&onebuf);
  }
  
  static void wt_status_print_change_data(struct wt_status *s,
  					int change_type,
  					struct string_list_item *it)
  {
  	struct wt_status_change_data *d = it->util;
  	const char *c = color(change_type, s);
  	int status;
  	char *one_name;
  	char *two_name;
  	const char *one, *two;
  	struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
  	struct strbuf extra = STRBUF_INIT;
  	static char *padding;
  	static int label_width;
  	const char *what;
  	int len;
  
  	if (!padding) {
  		/* If DIFF_STATUS_* uses outside the range [A..Z], we're in trouble */
  		label_width = maxwidth(wt_status_diff_status_string, 'A', 'Z');
  		label_width += strlen(" ");
  		padding = xmallocz(label_width);
  		memset(padding, ' ', label_width);
  	}
  
  	one_name = two_name = it->string;
  	switch (change_type) {
  	case WT_STATUS_UPDATED:
  		status = d->index_status;
  		if (d->head_path)
  			one_name = d->head_path;
  		break;
  	case WT_STATUS_CHANGED:
  		if (d->new_submodule_commits || d->dirty_submodule) {
  			strbuf_addstr(&extra, " (");
  			if (d->new_submodule_commits)
  				strbuf_addf(&extra, _("new commits, "));
  			if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
  				strbuf_addf(&extra, _("modified content, "));
  			if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
  				strbuf_addf(&extra, _("untracked content, "));
  			strbuf_setlen(&extra, extra.len - 2);
  			strbuf_addch(&extra, ')');
  		}
  		status = d->worktree_status;
  		break;
  	default:
  		die("BUG: unhandled change_type %d in wt_status_print_change_data",
  		    change_type);
  	}
  
  	one = quote_path(one_name, s->prefix, &onebuf);
  	two = quote_path(two_name, s->prefix, &twobuf);
  
  	status_printf(s, color(WT_STATUS_HEADER, s), "\t");
  	what = wt_status_diff_status_string(status);
  	if (!what)
  		die(_("bug: unhandled diff status %c"), status);
  	len = label_width - utf8_strwidth(what);
  	assert(len >= 0);
  	if (status == DIFF_STATUS_COPIED || status == DIFF_STATUS_RENAMED)
  		status_printf_more(s, c, "%s%.*s%s -> %s",
  				   what, len, padding, one, two);
  	else
  		status_printf_more(s, c, "%s%.*s%s",
  				   what, len, padding, one);
  	if (extra.len) {
  		status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
  		strbuf_release(&extra);
  	}
  	status_printf_more(s, GIT_COLOR_NORMAL, "\n");
  	strbuf_release(&onebuf);
  	strbuf_release(&twobuf);
  }
  
  static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
  					 struct diff_options *options,
  					 void *data)
  {
  	struct wt_status *s = data;
  	int i;
  
  	if (!q->nr)
  		return;
  	s->workdir_dirty = 1;
  	for (i = 0; i < q->nr; i++) {
  		struct diff_filepair *p;
  		struct string_list_item *it;
  		struct wt_status_change_data *d;
  
  		p = q->queue[i];
  		it = string_list_insert(&s->change, p->one->path);
  		d = it->util;
  		if (!d) {
  			d = xcalloc(1, sizeof(*d));
  			it->util = d;
  		}
  		if (!d->worktree_status)
  			d->worktree_status = p->status;
  		d->dirty_submodule = p->two->dirty_submodule;
  		if (S_ISGITLINK(p->two->mode))
  			d->new_submodule_commits = !!hashcmp(p->one->sha1, p->two->sha1);
  	}
  }
  
  static int unmerged_mask(const char *path)
  {
  	int pos, mask;
  	const struct cache_entry *ce;
  
  	pos = cache_name_pos(path, strlen(path));
  	if (0 <= pos)
  		return 0;
  
  	mask = 0;
  	pos = -pos-1;
  	while (pos < active_nr) {
  		ce = active_cache[pos++];
  		if (strcmp(ce->name, path) || !ce_stage(ce))
  			break;
  		mask |= (1 << (ce_stage(ce) - 1));
  	}
  	return mask;
  }
  
  static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
  					 struct diff_options *options,
  					 void *data)
  {
  	struct wt_status *s = data;
  	int i;
  
  	for (i = 0; i < q->nr; i++) {
  		struct diff_filepair *p;
  		struct string_list_item *it;
  		struct wt_status_change_data *d;
  
  		p = q->queue[i];
  		it = string_list_insert(&s->change, p->two->path);
  		d = it->util;
  		if (!d) {
  			d = xcalloc(1, sizeof(*d));
  			it->util = d;
  		}
  		if (!d->index_status)
  			d->index_status = p->status;
  		switch (p->status) {
  		case DIFF_STATUS_COPIED:
  		case DIFF_STATUS_RENAMED:
  			d->head_path = xstrdup(p->one->path);
  			break;
  		case DIFF_STATUS_UNMERGED:
  			d->stagemask = unmerged_mask(p->two->path);
  			break;
  		}
  	}
  }
  
  static void wt_status_collect_changes_worktree(struct wt_status *s)
  {
  	struct rev_info rev;
  
  	init_revisions(&rev, NULL);
  	setup_revisions(0, NULL, &rev, NULL);
  	rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
  	DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
  	if (!s->show_untracked_files)
  		DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
  	if (s->ignore_submodule_arg) {
  		DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
  		handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
  	}
  	rev.diffopt.format_callback = wt_status_collect_changed_cb;
  	rev.diffopt.format_callback_data = s;
  	copy_pathspec(&rev.prune_data, &s->pathspec);
  	run_diff_files(&rev, 0);
  }
  
  static void wt_status_collect_changes_index(struct wt_status *s)
  {
  	struct rev_info rev;
  	struct setup_revision_opt opt;
  
  	init_revisions(&rev, NULL);
  	memset(&opt, 0, sizeof(opt));
  	opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
  	setup_revisions(0, NULL, &rev, &opt);
  
  	DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
  	if (s->ignore_submodule_arg) {
  		handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
  	} else {
  		/*
  		 * Unless the user did explicitly request a submodule ignore
  		 * mode by passing a command line option we do not ignore any
  		 * changed submodule SHA-1s when comparing index and HEAD, no
  		 * matter what is configured. Otherwise the user won't be
  		 * shown any submodules she manually added (and which are
  		 * staged to be committed), which would be really confusing.
  		 */
  		handle_ignore_submodules_arg(&rev.diffopt, "dirty");
  	}
  
  	rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
  	rev.diffopt.format_callback = wt_status_collect_updated_cb;
  	rev.diffopt.format_callback_data = s;
  	rev.diffopt.detect_rename = 1;
  	rev.diffopt.rename_limit = 200;
  	rev.diffopt.break_opt = 0;
  	copy_pathspec(&rev.prune_data, &s->pathspec);
  	run_diff_index(&rev, 1);
  }
  
  static void wt_status_collect_changes_initial(struct wt_status *s)
  {
  	int i;
  
  	for (i = 0; i < active_nr; i++) {
  		struct string_list_item *it;
  		struct wt_status_change_data *d;
  		const struct cache_entry *ce = active_cache[i];
  
  		if (!ce_path_match(ce, &s->pathspec, NULL))
  			continue;
  		it = string_list_insert(&s->change, ce->name);
  		d = it->util;
  		if (!d) {
  			d = xcalloc(1, sizeof(*d));
  			it->util = d;
  		}
  		if (ce_stage(ce)) {
  			d->index_status = DIFF_STATUS_UNMERGED;
  			d->stagemask |= (1 << (ce_stage(ce) - 1));
  		}
  		else
  			d->index_status = DIFF_STATUS_ADDED;
  	}
  }
  
  static void wt_status_collect_untracked(struct wt_status *s)
  {
  	int i;
  	struct dir_struct dir;
  	uint64_t t_begin = getnanotime();
  
  	if (!s->show_untracked_files)
  		return;
  
  	memset(&dir, 0, sizeof(dir));
  	if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
  		dir.flags |=
  			DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
  	if (s->show_ignored_files)
  		dir.flags |= DIR_SHOW_IGNORED_TOO;
  	setup_standard_excludes(&dir);
  
  	fill_directory(&dir, &s->pathspec);
  
  	for (i = 0; i < dir.nr; i++) {
  		struct dir_entry *ent = dir.entries[i];
  		if (cache_name_is_other(ent->name, ent->len) &&
  		    dir_path_match(ent, &s->pathspec, 0, NULL))
  			string_list_insert(&s->untracked, ent->name);
  		free(ent);
  	}
  
  	for (i = 0; i < dir.ignored_nr; i++) {
  		struct dir_entry *ent = dir.ignored[i];
  		if (cache_name_is_other(ent->name, ent->len) &&
  		    dir_path_match(ent, &s->pathspec, 0, NULL))
  			string_list_insert(&s->ignored, ent->name);
  		free(ent);
  	}
  
  	free(dir.entries);
  	free(dir.ignored);
  	clear_directory(&dir);
  
  	if (advice_status_u_option)
  		s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
  }
  
  void wt_status_collect(struct wt_status *s)
  {
  	wt_status_collect_changes_worktree(s);
  
  	if (s->is_initial)
  		wt_status_collect_changes_initial(s);
  	else
  		wt_status_collect_changes_index(s);
  	wt_status_collect_untracked(s);
  }
  
  static void wt_status_print_unmerged(struct wt_status *s)
  {
  	int shown_header = 0;
  	int i;
  
  	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)
  			continue;
  		if (!shown_header) {
  			wt_status_print_unmerged_header(s);
  			shown_header = 1;
  		}
  		wt_status_print_unmerged_data(s, it);
  	}
  	if (shown_header)
  		wt_status_print_trailer(s);
  
  }
  
  static void wt_status_print_updated(struct wt_status *s)
  {
  	int shown_header = 0;
  	int i;
  
  	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->index_status ||
  		    d->index_status == DIFF_STATUS_UNMERGED)
  			continue;
  		if (!shown_header) {
  			wt_status_print_cached_header(s);
  			s->commitable = 1;
  			shown_header = 1;
  		}
  		wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
  	}
  	if (shown_header)
  		wt_status_print_trailer(s);
  }
  
  /*
   * -1 : has delete
   *  0 : no change
   *  1 : some change but no delete
   */
  static int wt_status_check_worktree_changes(struct wt_status *s,
  					     int *dirty_submodules)
  {
  	int i;
  	int changes = 0;
  
  	*dirty_submodules = 0;
  
  	for (i = 0; i < s->change.nr; i++) {
  		struct wt_status_change_data *d;
  		d = s->change.items[i].util;
  		if (!d->worktree_status ||
  		    d->worktree_status == DIFF_STATUS_UNMERGED)
  			continue;
  		if (!changes)
  			changes = 1;
  		if (d->dirty_submodule)
  			*dirty_submodules = 1;
  		if (d->worktree_status == DIFF_STATUS_DELETED)
  			changes = -1;
  	}
  	return changes;
  }
  
  static void wt_status_print_changed(struct wt_status *s)
  {
  	int i, dirty_submodules;
  	int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
  
  	if (!worktree_changes)
  		return;
  
  	wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
  
  	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->worktree_status ||
  		    d->worktree_status == DIFF_STATUS_UNMERGED)
  			continue;
  		wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
  	}
  	wt_status_print_trailer(s);
  }
  
  static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
  {
  	struct child_process sm_summary = CHILD_PROCESS_INIT;
  	struct argv_array argv = ARGV_ARRAY_INIT;
  	struct strbuf cmd_stdout = STRBUF_INIT;
  	struct strbuf summary = STRBUF_INIT;
  	char *summary_content;
  	size_t len;
  
  	argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
  			 s->index_file);
  
  	argv_array_push(&argv, "submodule");
  	argv_array_push(&argv, "summary");
  	argv_array_push(&argv, uncommitted ? "--files" : "--cached");
  	argv_array_push(&argv, "--for-status");
  	argv_array_push(&argv, "--summary-limit");
  	argv_array_pushf(&argv, "%d", s->submodule_summary);
  	if (!uncommitted)
  		argv_array_push(&argv, s->amend ? "HEAD^" : "HEAD");
  
  	sm_summary.argv = argv.argv;
  	sm_summary.git_cmd = 1;
  	sm_summary.no_stdin = 1;
  	fflush(s->fp);
  	sm_summary.out = -1;
  
  	run_command(&sm_summary);
  	argv_array_clear(&argv);
  
  	len = strbuf_read(&cmd_stdout, sm_summary.out, 1024);
  
  	/* prepend header, only if there's an actual output */
  	if (len) {
  		if (uncommitted)
  			strbuf_addstr(&summary, _("Submodules changed but not updated:"));
  		else
  			strbuf_addstr(&summary, _("Submodule changes to be committed:"));
  		strbuf_addstr(&summary, "\n\n");
  	}
  	strbuf_addbuf(&summary, &cmd_stdout);
  	strbuf_release(&cmd_stdout);
  
  	if (s->display_comment_prefix) {
  		summary_content = strbuf_detach(&summary, &len);
  		strbuf_add_commented_lines(&summary, summary_content, len);
  		free(summary_content);
  	}
  
  	fputs(summary.buf, s->fp);
  	strbuf_release(&summary);
  }
  
  static void wt_status_print_other(struct wt_status *s,
  				  struct string_list *l,
  				  const char *what,
  				  const char *how)
  {
  	int i;
  	struct strbuf buf = STRBUF_INIT;
  	static struct string_list output = STRING_LIST_INIT_DUP;
  	struct column_options copts;
  
  	if (!l->nr)
  		return;
  
  	wt_status_print_other_header(s, what, how);
  
  	for (i = 0; i < l->nr; i++) {
  		struct string_list_item *it;
  		const char *path;
  		it = &(l->items[i]);
  		path = quote_path(it->string, s->prefix, &buf);
  		if (column_active(s->colopts)) {
  			string_list_append(&output, path);
  			continue;
  		}
  		status_printf(s, color(WT_STATUS_HEADER, s), "\t");
  		status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
  				   "%s\n", path);
  	}
  
  	strbuf_release(&buf);
  	if (!column_active(s->colopts))
  		goto conclude;
  
  	strbuf_addf(&buf, "%s%s\t%s",
  		    color(WT_STATUS_HEADER, s),
  		    s->display_comment_prefix ? "#" : "",
  		    color(WT_STATUS_UNTRACKED, s));
  	memset(&copts, 0, sizeof(copts));
  	copts.padding = 1;
  	copts.indent = buf.buf;
  	if (want_color(s->use_color))
  		copts.nl = GIT_COLOR_RESET "\n";
  	print_columns(&output, s->colopts, &copts);
  	string_list_clear(&output, 0);
  	strbuf_release(&buf);
  conclude:
  	status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
  }
  
  void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
  {
  	const char *p;
  	struct strbuf pattern = STRBUF_INIT;
  
  	strbuf_addf(&pattern, "%c %s", comment_line_char, cut_line);
  	p = strstr(buf->buf, pattern.buf);
  	if (p && (p == buf->buf || p[-1] == '\n'))
  		strbuf_setlen(buf, p - buf->buf);
  	strbuf_release(&pattern);
  }
  
  void wt_status_add_cut_line(FILE *fp)
  {
  	const char *explanation = _("Do not touch the line above.\nEverything below will be removed.");
  	struct strbuf buf = STRBUF_INIT;
  
  	fprintf(fp, "%c %s", comment_line_char, cut_line);
  	strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
  	fputs(buf.buf, fp);
  	strbuf_release(&buf);
  }
  
  static void wt_status_print_verbose(struct wt_status *s)
  {
  	struct rev_info rev;
  	struct setup_revision_opt opt;
  
  	init_revisions(&rev, NULL);
  	DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
  
  	memset(&opt, 0, sizeof(opt));
  	opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
  	setup_revisions(0, NULL, &rev, &opt);
  
  	rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
  	rev.diffopt.detect_rename = 1;
  	rev.diffopt.file = s->fp;
  	rev.diffopt.close_file = 0;
  	/*
  	 * If we're not going to stdout, then we definitely don't
  	 * want color, since we are going to the commit message
  	 * file (and even the "auto" setting won't work, since it
  	 * will have checked isatty on stdout). But we then do want
  	 * to insert the scissor line here to reliably remove the
  	 * diff before committing.
  	 */
  	if (s->fp != stdout) {
  		rev.diffopt.use_color = 0;
  		wt_status_add_cut_line(s->fp);
  	}
  	run_diff_index(&rev, 1);
  }
  
  static void wt_status_print_tracking(struct wt_status *s)
  {
  	struct strbuf sb = STRBUF_INIT;
  	const char *cp, *ep;
  	struct branch *branch;
  	char comment_line_string[3];
  	int i;
  
  	assert(s->branch && !s->is_initial);
  	if (!starts_with(s->branch, "refs/heads/"))
  		return;
  	branch = branch_get(s->branch + 11);
  	if (!format_tracking_info(branch, &sb))
  		return;
  
  	i = 0;
  	if (s->display_comment_prefix) {
  		comment_line_string[i++] = comment_line_char;
  		comment_line_string[i++] = ' ';
  	}
  	comment_line_string[i] = '\0';
  
  	for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
  		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
  				 "%s%.*s", comment_line_string,
  				 (int)(ep - cp), cp);
  	if (s->display_comment_prefix)
  		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
  				 comment_line_char);
  	else
  		fputs("", s->fp);
  }
  
  static int has_unmerged(struct wt_status *s)
  {
  	int i;
  
  	for (i = 0; i < s->change.nr; i++) {
  		struct wt_status_change_data *d;
  		d = s->change.items[i].util;
  		if (d->stagemask)
  			return 1;
  	}
  	return 0;
  }
  
  static void show_merge_in_progress(struct wt_status *s,
  				struct wt_status_state *state,
  				const char *color)
  {
  	if (has_unmerged(s)) {
  		status_printf_ln(s, color, _("You have unmerged paths."));
  		if (s->hints)
  			status_printf_ln(s, color,
  				_("  (fix conflicts and run \"git commit\")"));
  	} else {
  		status_printf_ln(s, color,
  			_("All conflicts fixed but you are still merging."));
  		if (s->hints)
  			status_printf_ln(s, color,
  				_("  (use \"git commit\" to conclude merge)"));
  	}
  	wt_status_print_trailer(s);
  }
  
  static void show_am_in_progress(struct wt_status *s,
  				struct wt_status_state *state,
  				const char *color)
  {
  	status_printf_ln(s, color,
  		_("You are in the middle of an am session."));
  	if (state->am_empty_patch)
  		status_printf_ln(s, color,
  			_("The current patch is empty."));
  	if (s->hints) {
  		if (!state->am_empty_patch)
  			status_printf_ln(s, color,
  				_("  (fix conflicts and then run \"git am --continue\")"));
  		status_printf_ln(s, color,
  			_("  (use \"git am --skip\" to skip this patch)"));
  		status_printf_ln(s, color,
  			_("  (use \"git am --abort\" to restore the original branch)"));
  	}
  	wt_status_print_trailer(s);
  }
  
  static char *read_line_from_git_path(const char *filename)
  {
  	struct strbuf buf = STRBUF_INIT;
  	FILE *fp = fopen(git_path("%s", filename), "r");
  	if (!fp) {
  		strbuf_release(&buf);
  		return NULL;
  	}
  	strbuf_getline(&buf, fp, '\n');
  	if (!fclose(fp)) {
  		return strbuf_detach(&buf, NULL);
  	} else {
  		strbuf_release(&buf);
  		return NULL;
  	}
  }
  
  static int split_commit_in_progress(struct wt_status *s)
  {
  	int split_in_progress = 0;
  	char *head = read_line_from_git_path("HEAD");
  	char *orig_head = read_line_from_git_path("ORIG_HEAD");
  	char *rebase_amend = read_line_from_git_path("rebase-merge/amend");
  	char *rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
  
  	if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
  	    !s->branch || strcmp(s->branch, "HEAD"))
  		return split_in_progress;
  
  	if (!strcmp(rebase_amend, rebase_orig_head)) {
  		if (strcmp(head, rebase_amend))
  			split_in_progress = 1;
  	} else if (strcmp(orig_head, rebase_orig_head)) {
  		split_in_progress = 1;
  	}
  
  	if (!s->amend && !s->nowarn && !s->workdir_dirty)
  		split_in_progress = 0;
  
  	free(head);
  	free(orig_head);
  	free(rebase_amend);
  	free(rebase_orig_head);
  	return split_in_progress;
  }
  
  static void show_rebase_in_progress(struct wt_status *s,
  				struct wt_status_state *state,
  				const char *color)
  {
  	struct stat st;
  
  	if (has_unmerged(s)) {
  		if (state->branch)
  			status_printf_ln(s, color,
  					 _("You are currently rebasing branch '%s' on '%s'."),
  					 state->branch,
  					 state->onto);
  		else
  			status_printf_ln(s, color,
  					 _("You are currently rebasing."));
  		if (s->hints) {
  			status_printf_ln(s, color,
  				_("  (fix conflicts and then run \"git rebase --continue\")"));
  			status_printf_ln(s, color,
  				_("  (use \"git rebase --skip\" to skip this patch)"));
  			status_printf_ln(s, color,
  				_("  (use \"git rebase --abort\" to check out the original branch)"));
  		}
  	} else if (state->rebase_in_progress || !stat(git_path("MERGE_MSG"), &st)) {
  		if (state->branch)
  			status_printf_ln(s, color,
  					 _("You are currently rebasing branch '%s' on '%s'."),
  					 state->branch,
  					 state->onto);
  		else
  			status_printf_ln(s, color,
  					 _("You are currently rebasing."));
  		if (s->hints)
  			status_printf_ln(s, color,
  				_("  (all conflicts fixed: run \"git rebase --continue\")"));
  	} else if (split_commit_in_progress(s)) {
  		if (state->branch)
  			status_printf_ln(s, color,
  					 _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
  					 state->branch,
  					 state->onto);
  		else
  			status_printf_ln(s, color,
  					 _("You are currently splitting a commit during a rebase."));
  		if (s->hints)
  			status_printf_ln(s, color,
  				_("  (Once your working directory is clean, run \"git rebase --continue\")"));
  	} else {
  		if (state->branch)
  			status_printf_ln(s, color,
  					 _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
  					 state->branch,
  					 state->onto);
  		else
  			status_printf_ln(s, color,
  					 _("You are currently editing a commit during a rebase."));
  		if (s->hints && !s->amend) {
  			status_printf_ln(s, color,
  				_("  (use \"git commit --amend\" to amend the current commit)"));
  			status_printf_ln(s, color,
  				_("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
  		}
  	}
  	wt_status_print_trailer(s);
  }
  
  static void show_cherry_pick_in_progress(struct wt_status *s,
  					struct wt_status_state *state,
  					const char *color)
  {
  	status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
  			find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
  	if (s->hints) {
  		if (has_unmerged(s))
  			status_printf_ln(s, color,
  				_("  (fix conflicts and run \"git cherry-pick --continue\")"));
  		else
  			status_printf_ln(s, color,
  				_("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
  		status_printf_ln(s, color,
  			_("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
  	}
  	wt_status_print_trailer(s);
  }
  
  static void show_revert_in_progress(struct wt_status *s,
  					struct wt_status_state *state,
  					const char *color)
  {
  	status_printf_ln(s, color, _("You are currently reverting commit %s."),
  			 find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
  	if (s->hints) {
  		if (has_unmerged(s))
  			status_printf_ln(s, color,
  				_("  (fix conflicts and run \"git revert --continue\")"));
  		else
  			status_printf_ln(s, color,
  				_("  (all conflicts fixed: run \"git revert --continue\")"));
  		status_printf_ln(s, color,
  			_("  (use \"git revert --abort\" to cancel the revert operation)"));
  	}
  	wt_status_print_trailer(s);
  }
  
  static void show_bisect_in_progress(struct wt_status *s,
  				struct wt_status_state *state,
  				const char *color)
  {
  	if (state->branch)
  		status_printf_ln(s, color,
  				 _("You are currently bisecting, started from branch '%s'."),
  				 state->branch);
  	else
  		status_printf_ln(s, color,
  				 _("You are currently bisecting."));
  	if (s->hints)
  		status_printf_ln(s, color,
  			_("  (use \"git bisect reset\" to get back to the original branch)"));
  	wt_status_print_trailer(s);
  }
  
  /*
   * Extract branch information from rebase/bisect
   */
  static char *read_and_strip_branch(const char *path)
  {
  	struct strbuf sb = STRBUF_INIT;
  	unsigned char sha1[20];
  
  	if (strbuf_read_file(&sb, git_path("%s", path), 0) <= 0)
  		goto got_nothing;
  
  	while (&sb.len && sb.buf[sb.len - 1] == '\n')
  		strbuf_setlen(&sb, sb.len - 1);
  	if (!sb.len)
  		goto got_nothing;
  	if (starts_with(sb.buf, "refs/heads/"))
  		strbuf_remove(&sb,0, strlen("refs/heads/"));
  	else if (starts_with(sb.buf, "refs/"))
  		;
  	else if (!get_sha1_hex(sb.buf, sha1)) {
  		const char *abbrev;
  		abbrev = find_unique_abbrev(sha1, DEFAULT_ABBREV);
  		strbuf_reset(&sb);
  		strbuf_addstr(&sb, abbrev);
  	} else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
  		goto got_nothing;
  	else			/* bisect */
  		;
  	return strbuf_detach(&sb, NULL);
  
  got_nothing:
  	strbuf_release(&sb);
  	return NULL;
  }
  
  struct grab_1st_switch_cbdata {
  	struct strbuf buf;
  	unsigned char nsha1[20];
  };
  
  static int grab_1st_switch(unsigned char *osha1, unsigned char *nsha1,
  			   const char *email, unsigned long timestamp, int tz,
  			   const char *message, void *cb_data)
  {
  	struct grab_1st_switch_cbdata *cb = cb_data;
  	const char *target = NULL, *end;
  
  	if (!starts_with(message, "checkout: moving from "))
  		return 0;
  	message += strlen("checkout: moving from ");
  	target = strstr(message, " to ");
  	if (!target)
  		return 0;
  	target += strlen(" to ");
  	strbuf_reset(&cb->buf);
  	hashcpy(cb->nsha1, nsha1);
  	for (end = target; *end && *end != '\n'; end++)
  		;
  	strbuf_add(&cb->buf, target, end - target);
  	return 1;
  }
  
  static void wt_status_get_detached_from(struct wt_status_state *state)
  {
  	struct grab_1st_switch_cbdata cb;
  	struct commit *commit;
  	unsigned char sha1[20];
  	char *ref = NULL;
  
  	strbuf_init(&cb.buf, 0);
  	if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
  		strbuf_release(&cb.buf);
  		return;
  	}
  
  	if (dwim_ref(cb.buf.buf, cb.buf.len, sha1, &ref) == 1 &&
  	    /* sha1 is a commit? match without further lookup */
  	    (!hashcmp(cb.nsha1, sha1) ||
  	     /* perhaps sha1 is a tag, try to dereference to a commit */
  	     ((commit = lookup_commit_reference_gently(sha1, 1)) != NULL &&
  	      !hashcmp(cb.nsha1, commit->object.sha1)))) {
  		int ofs;
  		if (starts_with(ref, "refs/tags/"))
  			ofs = strlen("refs/tags/");
  		else if (starts_with(ref, "refs/remotes/"))
  			ofs = strlen("refs/remotes/");
  		else
  			ofs = 0;
  		state->detached_from = xstrdup(ref + ofs);
  	} else
  		state->detached_from =
  			xstrdup(find_unique_abbrev(cb.nsha1, DEFAULT_ABBREV));
  	hashcpy(state->detached_sha1, cb.nsha1);
  
  	free(ref);
  	strbuf_release(&cb.buf);
  }
  
  void wt_status_get_state(struct wt_status_state *state,
  			 int get_detached_from)
  {
  	struct stat st;
  	unsigned char sha1[20];
  
  	if (!stat(git_path("MERGE_HEAD"), &st)) {
  		state->merge_in_progress = 1;
  	} else if (!stat(git_path("rebase-apply"), &st)) {
  		if (!stat(git_path("rebase-apply/applying"), &st)) {
  			state->am_in_progress = 1;
  			if (!stat(git_path("rebase-apply/patch"), &st) && !st.st_size)
  				state->am_empty_patch = 1;
  		} else {
  			state->rebase_in_progress = 1;
  			state->branch = read_and_strip_branch("rebase-apply/head-name");
  			state->onto = read_and_strip_branch("rebase-apply/onto");
  		}
  	} else if (!stat(git_path("rebase-merge"), &st)) {
  		if (!stat(git_path("rebase-merge/interactive"), &st))
  			state->rebase_interactive_in_progress = 1;
  		else
  			state->rebase_in_progress = 1;
  		state->branch = read_and_strip_branch("rebase-merge/head-name");
  		state->onto = read_and_strip_branch("rebase-merge/onto");
  	} else if (!stat(git_path("CHERRY_PICK_HEAD"), &st) &&
  			!get_sha1("CHERRY_PICK_HEAD", sha1)) {
  		state->cherry_pick_in_progress = 1;
  		hashcpy(state->cherry_pick_head_sha1, sha1);
  	}
  	if (!stat(git_path("BISECT_LOG"), &st)) {
  		state->bisect_in_progress = 1;
  		state->branch = read_and_strip_branch("BISECT_START");
  	}
  	if (!stat(git_path("REVERT_HEAD"), &st) &&
  	    !get_sha1("REVERT_HEAD", sha1)) {
  		state->revert_in_progress = 1;
  		hashcpy(state->revert_head_sha1, sha1);
  	}
  
  	if (get_detached_from)
  		wt_status_get_detached_from(state);
  }
  
  static void wt_status_print_state(struct wt_status *s,
  				  struct wt_status_state *state)
  {
  	const char *state_color = color(WT_STATUS_HEADER, s);
  	if (state->merge_in_progress)
  		show_merge_in_progress(s, state, state_color);
  	else if (state->am_in_progress)
  		show_am_in_progress(s, state, state_color);
  	else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
  		show_rebase_in_progress(s, state, state_color);
  	else if (state->cherry_pick_in_progress)
  		show_cherry_pick_in_progress(s, state, state_color);
  	else if (state->revert_in_progress)
  		show_revert_in_progress(s, state, state_color);
  	if (state->bisect_in_progress)
  		show_bisect_in_progress(s, state, state_color);
  }
  
  void wt_status_print(struct wt_status *s)
  {
  	const char *branch_color = color(WT_STATUS_ONBRANCH, s);
  	const char *branch_status_color = color(WT_STATUS_HEADER, s);
  	struct wt_status_state state;
  
  	memset(&state, 0, sizeof(state));
  	wt_status_get_state(&state,
  			    s->branch && !strcmp(s->branch, "HEAD"));
  
  	if (s->branch) {
  		const char *on_what = _("On branch ");
  		const char *branch_name = s->branch;
  		if (starts_with(branch_name, "refs/heads/"))
  			branch_name += 11;
  		else if (!strcmp(branch_name, "HEAD")) {
  			branch_status_color = color(WT_STATUS_NOBRANCH, s);
  			if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
  				on_what = _("rebase in progress; onto ");
  				branch_name = state.onto;
  			} else if (state.detached_from) {
  				unsigned char sha1[20];
  				branch_name = state.detached_from;
  				if (!get_sha1("HEAD", sha1) &&
  				    !hashcmp(sha1, state.detached_sha1))
  					on_what = _("HEAD detached at ");
  				else
  					on_what = _("HEAD detached from ");
  			} else {
  				branch_name = "";
  				on_what = _("Not currently on any branch.");
  			}
  		}
  		status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
  		status_printf_more(s, branch_status_color, "%s", on_what);
  		status_printf_more(s, branch_color, "%s\n", branch_name);
  		if (!s->is_initial)
  			wt_status_print_tracking(s);
  	}
  
  	wt_status_print_state(s, &state);
  	free(state.branch);
  	free(state.onto);
  	free(state.detached_from);
  
  	if (s->is_initial) {
  		status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
  		status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
  		status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
  	}
  
  	wt_status_print_updated(s);
  	wt_status_print_unmerged(s);
  	wt_status_print_changed(s);
  	if (s->submodule_summary &&
  	    (!s->ignore_submodule_arg ||
  	     strcmp(s->ignore_submodule_arg, "all"))) {
  		wt_status_print_submodule_summary(s, 0);  /* staged */
  		wt_status_print_submodule_summary(s, 1);  /* unstaged */
  	}
  	if (s->show_untracked_files) {
  		wt_status_print_other(s, &s->untracked, _("Untracked files"), "add");
  		if (s->show_ignored_files)
  			wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
  		if (advice_status_u_option && 2000 < s->untracked_in_ms) {
  			status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
  			status_printf_ln(s, GIT_COLOR_NORMAL,
  					 _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
  					   "may speed it up, but you have to be careful not to forget to add\n"
  					   "new files yourself (see 'git help status')."),
  					 s->untracked_in_ms / 1000.0);
  		}
  	} else if (s->commitable)
  		status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
  			s->hints
  			? _(" (use -u option to show untracked files)") : "");
  
  	if (s->verbose)
  		wt_status_print_verbose(s);
  	if (!s->commitable) {
  		if (s->amend)
  			status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
  		else if (s->nowarn)
  			; /* nothing */
  		else if (s->workdir_dirty) {
  			if (s->hints)
  				printf(_("no changes added to commit "
  					 "(use \"git add\" and/or \"git commit -a\")\n"));
  			else
  				printf(_("no changes added to commit\n"));
  		} else if (s->untracked.nr) {
  			if (s->hints)
  				printf(_("nothing added to commit but untracked files "
  					 "present (use \"git add\" to track)\n"));
  			else
  				printf(_("nothing added to commit but untracked files present\n"));
  		} else if (s->is_initial) {
  			if (s->hints)
  				printf(_("nothing to commit (create/copy files "
  					 "and use \"git add\" to track)\n"));
  			else
  				printf(_("nothing to commit\n"));
  		} else if (!s->show_untracked_files) {
  			if (s->hints)
  				printf(_("nothing to commit (use -u to show untracked files)\n"));
  			else
  				printf(_("nothing to commit\n"));
  		} else
  			printf(_("nothing to commit, working directory clean\n"));
  	}
  }
  
  static void wt_shortstatus_unmerged(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 */
  	}
  	color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
  	if (s->null_termination) {
  		fprintf(stdout, " %s%c", it->string, 0);
  	} else {
  		struct strbuf onebuf = STRBUF_INIT;
  		const char *one;
  		one = quote_path(it->string, s->prefix, &onebuf);
  		printf(" %s\n", one);
  		strbuf_release(&onebuf);
  	}
  }
  
  static void wt_shortstatus_status(struct string_list_item *it,
  			 struct wt_status *s)
  {
  	struct wt_status_change_data *d = it->util;
  
  	if (d->index_status)
  		color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
  	else
  		putchar(' ');
  	if (d->worktree_status)
  		color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
  	else
  		putchar(' ');
  	putchar(' ');
  	if (s->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, s->prefix, &onebuf);
  			if (*one != '"' && strchr(one, ' ') != NULL) {
  				putchar('"');
  				strbuf_addch(&onebuf, '"');
  				one = onebuf.buf;
  			}
  			printf("%s -> ", one);
  			strbuf_release(&onebuf);
  		}
  		one = quote_path(it->string, s->prefix, &onebuf);
  		if (*one != '"' && strchr(one, ' ') != NULL) {
  			putchar('"');
  			strbuf_addch(&onebuf, '"');
  			one = onebuf.buf;
  		}
  		printf("%s\n", one);
  		strbuf_release(&onebuf);
  	}
  }
  
  static void wt_shortstatus_other(struct string_list_item *it,
  				 struct wt_status *s, const char *sign)
  {
  	if (s->null_termination) {
  		fprintf(stdout, "%s %s%c", sign, it->string, 0);
  	} else {
  		struct strbuf onebuf = STRBUF_INIT;
  		const char *one;
  		one = quote_path(it->string, s->prefix, &onebuf);
  		color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
  		printf(" %s\n", one);
  		strbuf_release(&onebuf);
  	}
  }
  
  static void wt_shortstatus_print_tracking(struct wt_status *s)
  {
  	struct branch *branch;
  	const char *header_color = color(WT_STATUS_HEADER, s);
  	const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
  	const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
  
  	const char *base;
  	const char *branch_name;
  	int num_ours, num_theirs;
  	int upstream_is_gone = 0;
  
  	color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
  
  	if (!s->branch)
  		return;
  	branch_name = s->branch;
  
  	if (starts_with(branch_name, "refs/heads/"))
  		branch_name += 11;
  	else if (!strcmp(branch_name, "HEAD")) {
  		branch_name = _("HEAD (no branch)");
  		branch_color_local = color(WT_STATUS_NOBRANCH, s);
  	}
  
  	branch = branch_get(s->branch + 11);
  	if (s->is_initial)
  		color_fprintf(s->fp, header_color, _("Initial commit on "));
  
  	color_fprintf(s->fp, branch_color_local, "%s", branch_name);
  
  	switch (stat_tracking_info(branch, &num_ours, &num_theirs)) {
  	case 0:
  		/* no base */
  		fputc(s->null_termination ? '\0' : '\n', s->fp);
  		return;
  	case -1:
  		/* with "gone" base */
  		upstream_is_gone = 1;
  		break;
  	default:
  		/* with base */
  		break;
  	}
  
  	base = branch->merge[0]->dst;
  	base = shorten_unambiguous_ref(base, 0);
  	color_fprintf(s->fp, header_color, "...");
  	color_fprintf(s->fp, branch_color_remote, "%s", base);
  
  	if (!upstream_is_gone && !num_ours && !num_theirs) {
  		fputc(s->null_termination ? '\0' : '\n', s->fp);
  		return;
  	}
  
  #define LABEL(string) (s->no_gettext ? (string) : _(string))
  
  	color_fprintf(s->fp, header_color, " [");
  	if (upstream_is_gone) {
  		color_fprintf(s->fp, header_color, LABEL(N_("gone")));
  	} else if (!num_ours) {
  		color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
  		color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
  	} else if (!num_theirs) {
  		color_fprintf(s->fp, header_color, LABEL(N_(("ahead "))));
  		color_fprintf(s->fp, branch_color_local, "%d", num_ours);
  	} else {
  		color_fprintf(s->fp, header_color, LABEL(N_(("ahead "))));
  		color_fprintf(s->fp, branch_color_local, "%d", num_ours);
  		color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
  		color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
  	}
  
  	color_fprintf(s->fp, header_color, "]");
  	fputc(s->null_termination ? '\0' : '\n', s->fp);
  }
  
  void wt_shortstatus_print(struct wt_status *s)
  {
  	int i;
  
  	if (s->show_branch)
  		wt_shortstatus_print_tracking(s);
  
  	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)
  			wt_shortstatus_unmerged(it, s);
  		else
  			wt_shortstatus_status(it, s);
  	}
  	for (i = 0; i < s->untracked.nr; i++) {
  		struct string_list_item *it;
  
  		it = &(s->untracked.items[i]);
  		wt_shortstatus_other(it, s, "??");
  	}
  	for (i = 0; i < s->ignored.nr; i++) {
  		struct string_list_item *it;
  
  		it = &(s->ignored.items[i]);
  		wt_shortstatus_other(it, s, "!!");
  	}
  }
  
  void wt_porcelain_print(struct wt_status *s)
  {
  	s->use_color = 0;
  	s->relative_paths = 0;
  	s->prefix = NULL;
  	s->no_gettext = 1;
  	wt_shortstatus_print(s);
  }
  