Imported Upstream version 2.23.3
[platform/upstream/git.git] / wt-status.c
index 27da529..9f6c65a 100644 (file)
@@ -1,5 +1,4 @@
 #include "cache.h"
-#include "pathspec.h"
 #include "wt-status.h"
 #include "object.h"
 #include "dir.h"
 #include "column.h"
 #include "strbuf.h"
 #include "utf8.h"
+#include "worktree.h"
+#include "lockfile.h"
+#include "sequencer.h"
+
+#define AB_DELAY_WARNING_IN_MS (2 * 1000)
 
 static const char cut_line[] =
 "------------------------ >8 ------------------------\n";
@@ -118,17 +122,16 @@ static void status_printf_more(struct wt_status *s, const char *color,
        va_end(ap);
 }
 
-void wt_status_prepare(struct wt_status *s)
+void wt_status_prepare(struct repository *r, struct wt_status *s)
 {
-       unsigned char sha1[20];
-
        memset(s, 0, sizeof(*s));
+       s->repo = r;
        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", sha1, 0, NULL);
+       s->branch = resolve_refdup("HEAD", 0, NULL, NULL);
        s->reference = "HEAD";
        s->fp = stdout;
        s->index_file = get_index_file();
@@ -136,10 +139,15 @@ void wt_status_prepare(struct wt_status *s)
        s->untracked.strdup_strings = 1;
        s->ignored.strdup_strings = 1;
        s->show_branch = -1;  /* unspecified */
+       s->show_stash = 0;
+       s->ahead_behind_flags = AHEAD_BEHIND_UNSPECIFIED;
        s->display_comment_prefix = 0;
+       s->detect_rename = -1;
+       s->rename_score = -1;
+       s->rename_limit = -1;
 }
 
-static void wt_status_print_unmerged_header(struct wt_status *s)
+static void wt_longstatus_print_unmerged_header(struct wt_status *s)
 {
        int i;
        int del_mod_conflict = 0;
@@ -173,9 +181,15 @@ static void wt_status_print_unmerged_header(struct wt_status *s)
                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
+       else if (!s->is_initial) {
+               if (!strcmp(s->reference, "HEAD"))
+                       status_printf_ln(s, c,
+                                        _("  (use \"git restore --staged <file>...\" to unstage)"));
+               else
+                       status_printf_ln(s, c,
+                                        _("  (use \"git restore --source=%s --staged <file>...\" to unstage)"),
+                                        s->reference);
+       } else
                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 
        if (!both_deleted) {
@@ -188,10 +202,9 @@ static void wt_status_print_unmerged_header(struct wt_status *s)
        } 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)
+static void wt_longstatus_print_cached_header(struct wt_status *s)
 {
        const char *c = color(WT_STATUS_HEADER, s);
 
@@ -200,16 +213,21 @@ static void wt_status_print_cached_header(struct wt_status *s)
                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
+       else if (!s->is_initial) {
+               if (!strcmp(s->reference, "HEAD"))
+                       status_printf_ln(s, c
+                                        , _("  (use \"git restore --staged <file>...\" to unstage)"));
+               else
+                       status_printf_ln(s, c,
+                                        _("  (use \"git restore --source=%s --staged <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)
+static void wt_longstatus_print_dirty_header(struct wt_status *s,
+                                            int has_deleted,
+                                            int has_dirty_submodules)
 {
        const char *c = color(WT_STATUS_HEADER, s);
 
@@ -220,25 +238,23 @@ static void wt_status_print_dirty_header(struct wt_status *s,
                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)"));
+       status_printf_ln(s, c, _("  (use \"git restore <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)
+static void wt_longstatus_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)
+static void wt_longstatus_print_trailer(struct wt_status *s)
 {
        status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 }
@@ -263,7 +279,7 @@ static const char *wt_status_unmerged_status_string(int stagemask)
        case 7:
                return _("both modified:");
        default:
-               die(_("bug: unhandled unmerged status %x"), stagemask);
+               BUG("unhandled unmerged status %x", stagemask);
        }
 }
 
@@ -304,8 +320,8 @@ static int maxwidth(const char *(*label)(int), int minval, int maxval)
        return result;
 }
 
-static void wt_status_print_unmerged_data(struct wt_status *s,
-                                         struct string_list_item *it)
+static void wt_longstatus_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;
@@ -331,9 +347,9 @@ static void wt_status_print_unmerged_data(struct wt_status *s,
        strbuf_release(&onebuf);
 }
 
-static void wt_status_print_change_data(struct wt_status *s,
-                                       int change_type,
-                                       struct string_list_item *it)
+static void wt_longstatus_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);
@@ -360,38 +376,44 @@ static void wt_status_print_change_data(struct wt_status *s,
        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, "));
+                               strbuf_addstr(&extra, _("new commits, "));
                        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
-                               strbuf_addf(&extra, _("modified content, "));
+                               strbuf_addstr(&extra, _("modified content, "));
                        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
-                               strbuf_addf(&extra, _("untracked content, "));
+                               strbuf_addstr(&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",
+               BUG("unhandled change_type %d in wt_longstatus_print_change_data",
                    change_type);
        }
 
+       /*
+        * Only pick up the rename it's relevant. If the rename is for
+        * the changed section and we're printing the updated section,
+        * ignore it.
+        */
+       if (d->rename_status == status)
+               one_name = d->rename_source;
+
        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);
+               BUG("unhandled diff status %c", status);
        len = label_width - utf8_strwidth(what);
        assert(len >= 0);
-       if (status == DIFF_STATUS_COPIED || status == DIFF_STATUS_RENAMED)
+       if (one_name != two_name)
                status_printf_more(s, c, "%s%.*s%s -> %s",
                                   what, len, padding, one, two);
        else
@@ -406,6 +428,17 @@ static void wt_status_print_change_data(struct wt_status *s,
        strbuf_release(&twobuf);
 }
 
+static char short_submodule_status(struct wt_status_change_data *d)
+{
+       if (d->new_submodule_commits)
+               return 'M';
+       if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
+               return 'm';
+       if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
+               return '?';
+       return d->worktree_status;
+}
+
 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
                                         struct diff_options *options,
                                         void *data)
@@ -422,7 +455,7 @@ static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
                struct wt_status_change_data *d;
 
                p = q->queue[i];
-               it = string_list_insert(&s->change, p->one->path);
+               it = string_list_insert(&s->change, p->two->path);
                d = it->util;
                if (!d) {
                        d = xcalloc(1, sizeof(*d));
@@ -430,25 +463,62 @@ static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
                }
                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);
+               if (S_ISGITLINK(p->two->mode)) {
+                       d->dirty_submodule = p->two->dirty_submodule;
+                       d->new_submodule_commits = !oideq(&p->one->oid,
+                                                         &p->two->oid);
+                       if (s->status_format == STATUS_FORMAT_SHORT)
+                               d->worktree_status = short_submodule_status(d);
+               }
+
+               switch (p->status) {
+               case DIFF_STATUS_ADDED:
+                       d->mode_worktree = p->two->mode;
+                       break;
+
+               case DIFF_STATUS_DELETED:
+                       d->mode_index = p->one->mode;
+                       oidcpy(&d->oid_index, &p->one->oid);
+                       /* mode_worktree is zero for a delete. */
+                       break;
+
+               case DIFF_STATUS_COPIED:
+               case DIFF_STATUS_RENAMED:
+                       if (d->rename_status)
+                               BUG("multiple renames on the same target? how?");
+                       d->rename_source = xstrdup(p->one->path);
+                       d->rename_score = p->score * 100 / MAX_SCORE;
+                       d->rename_status = p->status;
+                       /* fallthru */
+               case DIFF_STATUS_MODIFIED:
+               case DIFF_STATUS_TYPE_CHANGED:
+               case DIFF_STATUS_UNMERGED:
+                       d->mode_index = p->one->mode;
+                       d->mode_worktree = p->two->mode;
+                       oidcpy(&d->oid_index, &p->one->oid);
+                       break;
+
+               default:
+                       BUG("unhandled diff-files status '%c'", p->status);
+                       break;
+               }
+
        }
 }
 
-static int unmerged_mask(const char *path)
+static int unmerged_mask(struct index_state *istate, const char *path)
 {
        int pos, mask;
        const struct cache_entry *ce;
 
-       pos = cache_name_pos(path, strlen(path));
+       pos = index_name_pos(istate, path, strlen(path));
        if (0 <= pos)
                return 0;
 
        mask = 0;
        pos = -pos-1;
-       while (pos < active_nr) {
-               ce = active_cache[pos++];
+       while (pos < istate->cache_nr) {
+               ce = istate->cache[pos++];
                if (strcmp(ce->name, path) || !ce_stage(ce))
                        break;
                mask |= (1 << (ce_stage(ce) - 1));
@@ -478,12 +548,47 @@ static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
                if (!d->index_status)
                        d->index_status = p->status;
                switch (p->status) {
+               case DIFF_STATUS_ADDED:
+                       /* Leave {mode,oid}_head zero for an add. */
+                       d->mode_index = p->two->mode;
+                       oidcpy(&d->oid_index, &p->two->oid);
+                       s->committable = 1;
+                       break;
+               case DIFF_STATUS_DELETED:
+                       d->mode_head = p->one->mode;
+                       oidcpy(&d->oid_head, &p->one->oid);
+                       s->committable = 1;
+                       /* Leave {mode,oid}_index zero for a delete. */
+                       break;
+
                case DIFF_STATUS_COPIED:
                case DIFF_STATUS_RENAMED:
-                       d->head_path = xstrdup(p->one->path);
+                       if (d->rename_status)
+                               BUG("multiple renames on the same target? how?");
+                       d->rename_source = xstrdup(p->one->path);
+                       d->rename_score = p->score * 100 / MAX_SCORE;
+                       d->rename_status = p->status;
+                       /* fallthru */
+               case DIFF_STATUS_MODIFIED:
+               case DIFF_STATUS_TYPE_CHANGED:
+                       d->mode_head = p->one->mode;
+                       d->mode_index = p->two->mode;
+                       oidcpy(&d->oid_head, &p->one->oid);
+                       oidcpy(&d->oid_index, &p->two->oid);
+                       s->committable = 1;
                        break;
                case DIFF_STATUS_UNMERGED:
-                       d->stagemask = unmerged_mask(p->two->path);
+                       d->stagemask = unmerged_mask(s->repo->index,
+                                                    p->two->path);
+                       /*
+                        * Don't bother setting {mode,oid}_{head,index} since the print
+                        * code will output the stage values directly and not use the
+                        * values in these fields.
+                        */
+                       break;
+
+               default:
+                       BUG("unhandled diff-index status '%c'", p->status);
                        break;
                }
        }
@@ -493,18 +598,22 @@ static void wt_status_collect_changes_worktree(struct wt_status *s)
 {
        struct rev_info rev;
 
-       init_revisions(&rev, NULL);
+       repo_init_revisions(s->repo, &rev, NULL);
        setup_revisions(0, NULL, &rev, NULL);
        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
-       DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
+       rev.diffopt.flags.dirty_submodules = 1;
+       rev.diffopt.ita_invisible_in_index = 1;
        if (!s->show_untracked_files)
-               DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
+               rev.diffopt.flags.ignore_untracked_in_submodules = 1;
        if (s->ignore_submodule_arg) {
-               DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
+               rev.diffopt.flags.override_submodule_config = 1;
                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;
+       rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
+       rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
+       rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
        copy_pathspec(&rev.prune_data, &s->pathspec);
        run_diff_files(&rev, 0);
 }
@@ -514,12 +623,13 @@ static void wt_status_collect_changes_index(struct wt_status *s)
        struct rev_info rev;
        struct setup_revision_opt opt;
 
-       init_revisions(&rev, NULL);
+       repo_init_revisions(s->repo, &rev, NULL);
        memset(&opt, 0, sizeof(opt));
-       opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
+       opt.def = s->is_initial ? empty_tree_oid_hex() : s->reference;
        setup_revisions(0, NULL, &rev, &opt);
 
-       DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
+       rev.diffopt.flags.override_submodule_config = 1;
+       rev.diffopt.ita_invisible_in_index = 1;
        if (s->ignore_submodule_arg) {
                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
        } else {
@@ -537,23 +647,26 @@ static void wt_status_collect_changes_index(struct wt_status *s)
        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;
+       rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
+       rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
+       rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
        copy_pathspec(&rev.prune_data, &s->pathspec);
        run_diff_index(&rev, 1);
 }
 
 static void wt_status_collect_changes_initial(struct wt_status *s)
 {
+       struct index_state *istate = s->repo->index;
        int i;
 
-       for (i = 0; i < active_nr; i++) {
+       for (i = 0; i < istate->cache_nr; i++) {
                struct string_list_item *it;
                struct wt_status_change_data *d;
-               const struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = istate->cache[i];
 
-               if (!ce_path_match(ce, &s->pathspec, NULL))
+               if (!ce_path_match(istate, ce, &s->pathspec, NULL))
+                       continue;
+               if (ce_intent_to_add(ce))
                        continue;
                it = string_list_insert(&s->change, ce->name);
                d = it->util;
@@ -564,9 +677,19 @@ static void wt_status_collect_changes_initial(struct wt_status *s)
                if (ce_stage(ce)) {
                        d->index_status = DIFF_STATUS_UNMERGED;
                        d->stagemask |= (1 << (ce_stage(ce) - 1));
-               }
-               else
+                       /*
+                        * Don't bother setting {mode,oid}_{head,index} since the print
+                        * code will output the stage values directly and not use the
+                        * values in these fields.
+                        */
+                       s->committable = 1;
+               } else {
                        d->index_status = DIFF_STATUS_ADDED;
+                       /* Leave {mode,oid}_head zero for adds. */
+                       d->mode_index = ce->ce_mode;
+                       oidcpy(&d->oid_index, &ce->oid);
+                       s->committable = 1;
+               }
        }
 }
 
@@ -575,6 +698,7 @@ static void wt_status_collect_untracked(struct wt_status *s)
        int i;
        struct dir_struct dir;
        uint64_t t_begin = getnanotime();
+       struct index_state *istate = s->repo->index;
 
        if (!s->show_untracked_files)
                return;
@@ -583,24 +707,31 @@ static void wt_status_collect_untracked(struct wt_status *s)
        if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
                dir.flags |=
                        DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
-       if (s->show_ignored_files)
+       if (s->show_ignored_mode) {
                dir.flags |= DIR_SHOW_IGNORED_TOO;
+
+               if (s->show_ignored_mode == SHOW_MATCHING_IGNORED)
+                       dir.flags |= DIR_SHOW_IGNORED_TOO_MODE_MATCHING;
+       } else {
+               dir.untracked = istate->untracked;
+       }
+
        setup_standard_excludes(&dir);
 
-       fill_directory(&dir, &s->pathspec);
+       fill_directory(&dir, istate, &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))
+               if (index_name_is_other(istate, ent->name, ent->len) &&
+                   dir_path_match(istate, 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))
+               if (index_name_is_other(istate, ent->name, ent->len) &&
+                   dir_path_match(istate, ent, &s->pathspec, 0, NULL))
                        string_list_insert(&s->ignored, ent->name);
                free(ent);
        }
@@ -613,18 +744,52 @@ static void wt_status_collect_untracked(struct wt_status *s)
                s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 }
 
+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;
+}
+
 void wt_status_collect(struct wt_status *s)
 {
+       trace2_region_enter("status", "worktrees", s->repo);
        wt_status_collect_changes_worktree(s);
+       trace2_region_leave("status", "worktrees", s->repo);
 
-       if (s->is_initial)
+       if (s->is_initial) {
+               trace2_region_enter("status", "initial", s->repo);
                wt_status_collect_changes_initial(s);
-       else
+               trace2_region_leave("status", "initial", s->repo);
+       } else {
+               trace2_region_enter("status", "index", s->repo);
                wt_status_collect_changes_index(s);
+               trace2_region_leave("status", "index", s->repo);
+       }
+
+       trace2_region_enter("status", "untracked", s->repo);
        wt_status_collect_untracked(s);
+       trace2_region_leave("status", "untracked", s->repo);
+
+       wt_status_get_state(s->repo, &s->state, s->branch && !strcmp(s->branch, "HEAD"));
+       if (s->state.merge_in_progress && !has_unmerged(s))
+               s->committable = 1;
+}
+
+void wt_status_collect_free_buffers(struct wt_status *s)
+{
+       free(s->state.branch);
+       free(s->state.onto);
+       free(s->state.detached_from);
 }
 
-static void wt_status_print_unmerged(struct wt_status *s)
+static void wt_longstatus_print_unmerged(struct wt_status *s)
 {
        int shown_header = 0;
        int i;
@@ -637,17 +802,17 @@ static void wt_status_print_unmerged(struct wt_status *s)
                if (!d->stagemask)
                        continue;
                if (!shown_header) {
-                       wt_status_print_unmerged_header(s);
+                       wt_longstatus_print_unmerged_header(s);
                        shown_header = 1;
                }
-               wt_status_print_unmerged_data(s, it);
+               wt_longstatus_print_unmerged_data(s, it);
        }
        if (shown_header)
-               wt_status_print_trailer(s);
+               wt_longstatus_print_trailer(s);
 
 }
 
-static void wt_status_print_updated(struct wt_status *s)
+static void wt_longstatus_print_updated(struct wt_status *s)
 {
        int shown_header = 0;
        int i;
@@ -661,14 +826,13 @@ static void wt_status_print_updated(struct wt_status *s)
                    d->index_status == DIFF_STATUS_UNMERGED)
                        continue;
                if (!shown_header) {
-                       wt_status_print_cached_header(s);
-                       s->commitable = 1;
+                       wt_longstatus_print_cached_header(s);
                        shown_header = 1;
                }
-               wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
+               wt_longstatus_print_change_data(s, WT_STATUS_UPDATED, it);
        }
        if (shown_header)
-               wt_status_print_trailer(s);
+               wt_longstatus_print_trailer(s);
 }
 
 /*
@@ -700,7 +864,7 @@ static int wt_status_check_worktree_changes(struct wt_status *s,
        return changes;
 }
 
-static void wt_status_print_changed(struct wt_status *s)
+static void wt_longstatus_print_changed(struct wt_status *s)
 {
        int i, dirty_submodules;
        int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
@@ -708,7 +872,7 @@ static void wt_status_print_changed(struct wt_status *s)
        if (!worktree_changes)
                return;
 
-       wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
+       wt_longstatus_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 
        for (i = 0; i < s->change.nr; i++) {
                struct wt_status_change_data *d;
@@ -718,48 +882,58 @@ static void wt_status_print_changed(struct wt_status *s)
                if (!d->worktree_status ||
                    d->worktree_status == DIFF_STATUS_UNMERGED)
                        continue;
-               wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
+               wt_longstatus_print_change_data(s, WT_STATUS_CHANGED, it);
        }
-       wt_status_print_trailer(s);
+       wt_longstatus_print_trailer(s);
 }
 
-static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
+static int stash_count_refs(struct object_id *ooid, struct object_id *noid,
+                           const char *email, timestamp_t timestamp, int tz,
+                           const char *message, void *cb_data)
 {
-       struct child_process sm_summary;
-       struct argv_array env = ARGV_ARRAY_INIT;
-       struct argv_array argv = ARGV_ARRAY_INIT;
+       int *c = cb_data;
+       (*c)++;
+       return 0;
+}
+
+static void wt_longstatus_print_stash_summary(struct wt_status *s)
+{
+       int stash_count = 0;
+
+       for_each_reflog_ent("refs/stash", stash_count_refs, &stash_count);
+       if (stash_count > 0)
+               status_printf_ln(s, GIT_COLOR_NORMAL,
+                                Q_("Your stash currently has %d entry",
+                                   "Your stash currently has %d entries", stash_count),
+                                stash_count);
+}
+
+static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncommitted)
+{
+       struct child_process sm_summary = CHILD_PROCESS_INIT;
        struct strbuf cmd_stdout = STRBUF_INIT;
        struct strbuf summary = STRBUF_INIT;
        char *summary_content;
-       size_t len;
 
-       argv_array_pushf(&env, "GIT_INDEX_FILE=%s", s->index_file);
+       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);
+       argv_array_push(&sm_summary.args, "submodule");
+       argv_array_push(&sm_summary.args, "summary");
+       argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
+       argv_array_push(&sm_summary.args, "--for-status");
+       argv_array_push(&sm_summary.args, "--summary-limit");
+       argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
        if (!uncommitted)
-               argv_array_push(&argv, s->amend ? "HEAD^" : "HEAD");
+               argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 
-       memset(&sm_summary, 0, sizeof(sm_summary));
-       sm_summary.argv = argv.argv;
-       sm_summary.env = env.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(&env);
-       argv_array_clear(&argv);
 
-       len = strbuf_read(&cmd_stdout, sm_summary.out, 1024);
+       capture_command(&sm_summary, &cmd_stdout, 1024);
 
        /* prepend header, only if there's an actual output */
-       if (len) {
+       if (cmd_stdout.len) {
                if (uncommitted)
                        strbuf_addstr(&summary, _("Submodules changed but not updated:"));
                else
@@ -770,6 +944,7 @@ static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitt
        strbuf_release(&cmd_stdout);
 
        if (s->display_comment_prefix) {
+               size_t len;
                summary_content = strbuf_detach(&summary, &len);
                strbuf_add_commented_lines(&summary, summary_content, len);
                free(summary_content);
@@ -779,10 +954,10 @@ static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitt
        strbuf_release(&summary);
 }
 
-static void wt_status_print_other(struct wt_status *s,
-                                 struct string_list *l,
-                                 const char *what,
-                                 const char *how)
+static void wt_longstatus_print_other(struct wt_status *s,
+                                     struct string_list *l,
+                                     const char *what,
+                                     const char *how)
 {
        int i;
        struct strbuf buf = STRBUF_INIT;
@@ -792,7 +967,7 @@ static void wt_status_print_other(struct wt_status *s,
        if (!l->nr)
                return;
 
-       wt_status_print_other_header(s, what, how);
+       wt_longstatus_print_other_header(s, what, how);
 
        for (i = 0; i < l->nr; i++) {
                struct string_list_item *it;
@@ -828,43 +1003,56 @@ conclude:
        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 }
 
-void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
+size_t wt_status_locate_end(const char *s, size_t len)
 {
        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_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
+       if (starts_with(s, pattern.buf + 1))
+               len = 0;
+       else if ((p = strstr(s, pattern.buf)))
+               len = p - s + 1;
        strbuf_release(&pattern);
+       return len;
+}
+
+void wt_status_append_cut_line(struct strbuf *buf)
+{
+       const char *explanation = _("Do not modify or remove the line above.\nEverything below it will be ignored.");
+
+       strbuf_commented_addf(buf, "%s", cut_line);
+       strbuf_add_commented_lines(buf, explanation, strlen(explanation));
 }
 
 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));
+       wt_status_append_cut_line(&buf);
        fputs(buf.buf, fp);
        strbuf_release(&buf);
 }
 
-static void wt_status_print_verbose(struct wt_status *s)
+static void wt_longstatus_print_verbose(struct wt_status *s)
 {
        struct rev_info rev;
        struct setup_revision_opt opt;
+       int dirty_submodules;
+       const char *c = color(WT_STATUS_HEADER, s);
 
-       init_revisions(&rev, NULL);
-       DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
+       repo_init_revisions(s->repo, &rev, NULL);
+       rev.diffopt.flags.allow_textconv = 1;
+       rev.diffopt.ita_invisible_in_index = 1;
 
        memset(&opt, 0, sizeof(opt));
-       opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
+       opt.def = s->is_initial ? empty_tree_oid_hex() : s->reference;
        setup_revisions(0, NULL, &rev, &opt);
 
        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
-       rev.diffopt.detect_rename = 1;
+       rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
+       rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
+       rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
        rev.diffopt.file = s->fp;
        rev.diffopt.close_file = 0;
        /*
@@ -879,24 +1067,57 @@ static void wt_status_print_verbose(struct wt_status *s)
                rev.diffopt.use_color = 0;
                wt_status_add_cut_line(s->fp);
        }
+       if (s->verbose > 1 && s->committable) {
+               /* print_updated() printed a header, so do we */
+               if (s->fp != stdout)
+                       wt_longstatus_print_trailer(s);
+               status_printf_ln(s, c, _("Changes to be committed:"));
+               rev.diffopt.a_prefix = "c/";
+               rev.diffopt.b_prefix = "i/";
+       } /* else use prefix as per user config */
        run_diff_index(&rev, 1);
+       if (s->verbose > 1 &&
+           wt_status_check_worktree_changes(s, &dirty_submodules)) {
+               status_printf_ln(s, c,
+                       "--------------------------------------------------");
+               status_printf_ln(s, c, _("Changes not staged for commit:"));
+               setup_work_tree();
+               rev.diffopt.a_prefix = "i/";
+               rev.diffopt.b_prefix = "w/";
+               run_diff_files(&rev, 0);
+       }
 }
 
-static void wt_status_print_tracking(struct wt_status *s)
+static void wt_longstatus_print_tracking(struct wt_status *s)
 {
        struct strbuf sb = STRBUF_INIT;
-       const char *cp, *ep;
+       const char *cp, *ep, *branch_name;
        struct branch *branch;
        char comment_line_string[3];
        int i;
+       uint64_t t_begin = 0;
 
        assert(s->branch && !s->is_initial);
-       if (!starts_with(s->branch, "refs/heads/"))
+       if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
                return;
-       branch = branch_get(s->branch + 11);
-       if (!format_tracking_info(branch, &sb))
+       branch = branch_get(branch_name);
+
+       t_begin = getnanotime();
+
+       if (!format_tracking_info(branch, &sb, s->ahead_behind_flags))
                return;
 
+       if (advice_status_ahead_behind_warning &&
+           s->ahead_behind_flags == AHEAD_BEHIND_FULL) {
+               uint64_t t_delta_in_ms = (getnanotime() - t_begin) / 1000000;
+               if (t_delta_in_ms > AB_DELAY_WARNING_IN_MS) {
+                       strbuf_addf(&sb, _("\n"
+                                          "It took %.2f seconds to compute the branch ahead/behind values.\n"
+                                          "You can use '--no-ahead-behind' to avoid this.\n"),
+                                   t_delta_in_ms / 1000.0);
+               }
+       }
+
        i = 0;
        if (s->display_comment_prefix) {
                comment_line_string[i++] = comment_line_char;
@@ -912,31 +1133,21 @@ static void wt_status_print_tracking(struct wt_status *s)
                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;
+               fputs("\n", s->fp);
+       strbuf_release(&sb);
 }
 
 static void show_merge_in_progress(struct wt_status *s,
-                               struct wt_status_state *state,
-                               const char *color)
+                                  const char *color)
 {
        if (has_unmerged(s)) {
                status_printf_ln(s, color, _("You have unmerged paths."));
-               if (s->hints)
+               if (s->hints) {
                        status_printf_ln(s, color,
-                               _("  (fix conflicts and run \"git commit\")"));
+                                        _("  (fix conflicts and run \"git commit\")"));
+                       status_printf_ln(s, color,
+                                        _("  (use \"git merge --abort\" to abort the merge)"));
+               }
        } else {
                status_printf_ln(s, color,
                        _("All conflicts fixed but you are still merging."));
@@ -944,20 +1155,19 @@ static void show_merge_in_progress(struct wt_status *s,
                        status_printf_ln(s, color,
                                _("  (use \"git commit\" to conclude merge)"));
        }
-       wt_status_print_trailer(s);
+       wt_longstatus_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)
+       if (s->state.am_empty_patch)
                status_printf_ln(s, color,
                        _("The current patch is empty."));
        if (s->hints) {
-               if (!state->am_empty_patch)
+               if (!s->state.am_empty_patch)
                        status_printf_ln(s, color,
                                _("  (fix conflicts and then run \"git am --continue\")"));
                status_printf_ln(s, color,
@@ -965,18 +1175,19 @@ static void show_am_in_progress(struct wt_status *s,
                status_printf_ln(s, color,
                        _("  (use \"git am --abort\" to restore the original branch)"));
        }
-       wt_status_print_trailer(s);
+       wt_longstatus_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");
+       FILE *fp = fopen_or_warn(git_path("%s", filename), "r");
+
        if (!fp) {
                strbuf_release(&buf);
                return NULL;
        }
-       strbuf_getline(&buf, fp, '\n');
+       strbuf_getline_lf(&buf, fp);
        if (!fclose(fp)) {
                return strbuf_detach(&buf, NULL);
        } else {
@@ -988,47 +1199,173 @@ static char *read_line_from_git_path(const char *filename)
 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");
+       char *head, *orig_head, *rebase_amend, *rebase_orig_head;
 
-       if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
+       if ((!s->amend && !s->nowarn && !s->workdir_dirty) ||
            !s->branch || strcmp(s->branch, "HEAD"))
-               return split_in_progress;
+               return 0;
 
-       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;
-       }
+       head = read_line_from_git_path("HEAD");
+       orig_head = read_line_from_git_path("ORIG_HEAD");
+       rebase_amend = read_line_from_git_path("rebase-merge/amend");
+       rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
 
-       if (!s->amend && !s->nowarn && !s->workdir_dirty)
-               split_in_progress = 0;
+       if (!head || !orig_head || !rebase_amend || !rebase_orig_head)
+               ; /* fall through, no split in progress */
+       else if (!strcmp(rebase_amend, rebase_orig_head))
+               split_in_progress = !!strcmp(head, rebase_amend);
+       else if (strcmp(orig_head, rebase_orig_head))
+               split_in_progress = 1;
 
        free(head);
        free(orig_head);
        free(rebase_amend);
        free(rebase_orig_head);
+
        return split_in_progress;
 }
 
+/*
+ * Turn
+ * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
+ * into
+ * "pick d6a2f03 some message"
+ *
+ * The function assumes that the line does not contain useless spaces
+ * before or after the command.
+ */
+static void abbrev_sha1_in_line(struct strbuf *line)
+{
+       struct strbuf **split;
+       int i;
+
+       if (starts_with(line->buf, "exec ") ||
+           starts_with(line->buf, "x ") ||
+           starts_with(line->buf, "label ") ||
+           starts_with(line->buf, "l "))
+               return;
+
+       split = strbuf_split_max(line, ' ', 3);
+       if (split[0] && split[1]) {
+               struct object_id oid;
+
+               /*
+                * strbuf_split_max left a space. Trim it and re-add
+                * it after abbreviation.
+                */
+               strbuf_trim(split[1]);
+               if (!get_oid(split[1]->buf, &oid)) {
+                       strbuf_reset(split[1]);
+                       strbuf_add_unique_abbrev(split[1], &oid,
+                                                DEFAULT_ABBREV);
+                       strbuf_addch(split[1], ' ');
+                       strbuf_reset(line);
+                       for (i = 0; split[i]; i++)
+                               strbuf_addbuf(line, split[i]);
+               }
+       }
+       strbuf_list_free(split);
+}
+
+static int read_rebase_todolist(const char *fname, struct string_list *lines)
+{
+       struct strbuf line = STRBUF_INIT;
+       FILE *f = fopen(git_path("%s", fname), "r");
+
+       if (!f) {
+               if (errno == ENOENT)
+                       return -1;
+               die_errno("Could not open file %s for reading",
+                         git_path("%s", fname));
+       }
+       while (!strbuf_getline_lf(&line, f)) {
+               if (line.len && line.buf[0] == comment_line_char)
+                       continue;
+               strbuf_trim(&line);
+               if (!line.len)
+                       continue;
+               abbrev_sha1_in_line(&line);
+               string_list_append(lines, line.buf);
+       }
+       fclose(f);
+       strbuf_release(&line);
+       return 0;
+}
+
+static void show_rebase_information(struct wt_status *s,
+                                   const char *color)
+{
+       if (s->state.rebase_interactive_in_progress) {
+               int i;
+               int nr_lines_to_show = 2;
+
+               struct string_list have_done = STRING_LIST_INIT_DUP;
+               struct string_list yet_to_do = STRING_LIST_INIT_DUP;
+
+               read_rebase_todolist("rebase-merge/done", &have_done);
+               if (read_rebase_todolist("rebase-merge/git-rebase-todo",
+                                        &yet_to_do))
+                       status_printf_ln(s, color,
+                               _("git-rebase-todo is missing."));
+               if (have_done.nr == 0)
+                       status_printf_ln(s, color, _("No commands done."));
+               else {
+                       status_printf_ln(s, color,
+                               Q_("Last command done (%d command done):",
+                                       "Last commands done (%d commands done):",
+                                       have_done.nr),
+                               have_done.nr);
+                       for (i = (have_done.nr > nr_lines_to_show)
+                               ? have_done.nr - nr_lines_to_show : 0;
+                               i < have_done.nr;
+                               i++)
+                               status_printf_ln(s, color, "   %s", have_done.items[i].string);
+                       if (have_done.nr > nr_lines_to_show && s->hints)
+                               status_printf_ln(s, color,
+                                       _("  (see more in file %s)"), git_path("rebase-merge/done"));
+               }
+
+               if (yet_to_do.nr == 0)
+                       status_printf_ln(s, color,
+                                        _("No commands remaining."));
+               else {
+                       status_printf_ln(s, color,
+                               Q_("Next command to do (%d remaining command):",
+                                       "Next commands to do (%d remaining commands):",
+                                       yet_to_do.nr),
+                               yet_to_do.nr);
+                       for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
+                               status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
+                       if (s->hints)
+                               status_printf_ln(s, color,
+                                       _("  (use \"git rebase --edit-todo\" to view and edit)"));
+               }
+               string_list_clear(&yet_to_do, 0);
+               string_list_clear(&have_done, 0);
+       }
+}
+
+static void print_rebase_state(struct wt_status *s,
+                              const char *color)
+{
+       if (s->state.branch)
+               status_printf_ln(s, color,
+                                _("You are currently rebasing branch '%s' on '%s'."),
+                                s->state.branch,
+                                s->state.onto);
+       else
+               status_printf_ln(s, color,
+                                _("You are currently rebasing."));
+}
+
 static void show_rebase_in_progress(struct wt_status *s,
-                               struct wt_status_state *state,
-                               const char *color)
+                                   const char *color)
 {
        struct stat st;
 
+       show_rebase_information(s, color);
        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."));
+               print_rebase_state(s, color);
                if (s->hints) {
                        status_printf_ln(s, color,
                                _("  (fix conflicts and then run \"git rebase --continue\")"));
@@ -1037,24 +1374,18 @@ static void show_rebase_in_progress(struct wt_status *s,
                        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."));
+       } else if (s->state.rebase_in_progress ||
+                  !stat(git_path_merge_msg(s->repo), &st)) {
+               print_rebase_state(s, color);
                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)
+               if (s->state.branch)
                        status_printf_ln(s, color,
                                         _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
-                                        state->branch,
-                                        state->onto);
+                                        s->state.branch,
+                                        s->state.onto);
                else
                        status_printf_ln(s, color,
                                         _("You are currently splitting a commit during a rebase."));
@@ -1062,11 +1393,11 @@ static void show_rebase_in_progress(struct wt_status *s,
                        status_printf_ln(s, color,
                                _("  (Once your working directory is clean, run \"git rebase --continue\")"));
        } else {
-               if (state->branch)
+               if (s->state.branch)
                        status_printf_ln(s, color,
                                         _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
-                                        state->branch,
-                                        state->onto);
+                                        s->state.branch,
+                                        s->state.onto);
                else
                        status_printf_ln(s, color,
                                         _("You are currently editing a commit during a rebase."));
@@ -1077,88 +1408,103 @@ static void show_rebase_in_progress(struct wt_status *s,
                                _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
                }
        }
-       wt_status_print_trailer(s);
+       wt_longstatus_print_trailer(s);
 }
 
 static void show_cherry_pick_in_progress(struct wt_status *s,
-                                       struct wt_status_state *state,
-                                       const char *color)
+                                        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 (is_null_oid(&s->state.cherry_pick_head_oid))
+               status_printf_ln(s, color,
+                       _("Cherry-pick currently in progress."));
+       else
+               status_printf_ln(s, color,
+                       _("You are currently cherry-picking commit %s."),
+                       find_unique_abbrev(&s->state.cherry_pick_head_oid,
+                                          DEFAULT_ABBREV));
+
        if (s->hints) {
                if (has_unmerged(s))
                        status_printf_ln(s, color,
                                _("  (fix conflicts and run \"git cherry-pick --continue\")"));
+               else if (is_null_oid(&s->state.cherry_pick_head_oid))
+                       status_printf_ln(s, color,
+                               _("  (run \"git cherry-pick --continue\" to 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);
+       wt_longstatus_print_trailer(s);
 }
 
 static void show_revert_in_progress(struct wt_status *s,
-                                       struct wt_status_state *state,
-                                       const char *color)
+                                   const char *color)
 {
-       status_printf_ln(s, color, _("You are currently reverting commit %s."),
-                        find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
+       if (is_null_oid(&s->state.revert_head_oid))
+               status_printf_ln(s, color,
+                       _("Revert currently in progress."));
+       else
+               status_printf_ln(s, color,
+                       _("You are currently reverting commit %s."),
+                       find_unique_abbrev(&s->state.revert_head_oid,
+                                          DEFAULT_ABBREV));
        if (s->hints) {
                if (has_unmerged(s))
                        status_printf_ln(s, color,
                                _("  (fix conflicts and run \"git revert --continue\")"));
+               else if (is_null_oid(&s->state.revert_head_oid))
+                       status_printf_ln(s, color,
+                               _("  (run \"git revert --continue\" to 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);
+       wt_longstatus_print_trailer(s);
 }
 
 static void show_bisect_in_progress(struct wt_status *s,
-                               struct wt_status_state *state,
-                               const char *color)
+                                   const char *color)
 {
-       if (state->branch)
+       if (s->state.branch)
                status_printf_ln(s, color,
                                 _("You are currently bisecting, started from branch '%s'."),
-                                state->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);
+       wt_longstatus_print_trailer(s);
 }
 
 /*
  * Extract branch information from rebase/bisect
  */
-static char *read_and_strip_branch(const char *path)
+static char *get_branch(const struct worktree *wt, const char *path)
 {
        struct strbuf sb = STRBUF_INIT;
-       unsigned char sha1[20];
+       struct object_id oid;
+       const char *branch_name;
 
-       if (strbuf_read_file(&sb, git_path("%s", path), 0) <= 0)
+       if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
                goto got_nothing;
 
-       while (&sb.len && sb.buf[sb.len - 1] == '\n')
+       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/"));
+       if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
+               strbuf_remove(&sb, 0, branch_name - sb.buf);
        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);
+       else if (!get_oid_hex(sb.buf, &oid)) {
                strbuf_reset(&sb);
-               strbuf_addstr(&sb, abbrev);
+               strbuf_add_unique_abbrev(&sb, &oid, DEFAULT_ABBREV);
        } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
                goto got_nothing;
        else                    /* bisect */
@@ -1172,36 +1518,40 @@ got_nothing:
 
 struct grab_1st_switch_cbdata {
        struct strbuf buf;
-       unsigned char nsha1[20];
+       struct object_id noid;
 };
 
-static int grab_1st_switch(unsigned char *osha1, unsigned char *nsha1,
-                          const char *email, unsigned long timestamp, int tz,
+static int grab_1st_switch(struct object_id *ooid, struct object_id *noid,
+                          const char *email, timestamp_t 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 "))
+       if (!skip_prefix(message, "checkout: moving from ", &message))
                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++)
-               ;
+       oidcpy(&cb->noid, noid);
+       end = strchrnul(target, '\n');
        strbuf_add(&cb->buf, target, end - target);
+       if (!strcmp(cb->buf.buf, "HEAD")) {
+               /* HEAD is relative. Resolve it to the right reflog entry. */
+               strbuf_reset(&cb->buf);
+               strbuf_add_unique_abbrev(&cb->buf, noid, DEFAULT_ABBREV);
+       }
        return 1;
 }
 
-static void wt_status_get_detached_from(struct wt_status_state *state)
+static void wt_status_get_detached_from(struct repository *r,
+                                       struct wt_status_state *state)
 {
        struct grab_1st_switch_cbdata cb;
        struct commit *commit;
-       unsigned char sha1[20];
+       struct object_id oid;
        char *ref = NULL;
 
        strbuf_init(&cb.buf, 0);
@@ -1210,155 +1560,187 @@ static void wt_status_get_detached_from(struct wt_status_state *state)
                return;
        }
 
-       if (dwim_ref(cb.buf.buf, cb.buf.len, sha1, &ref) == 1 &&
+       if (dwim_ref(cb.buf.buf, cb.buf.len, &oid, &ref) == 1 &&
            /* sha1 is a commit? match without further lookup */
-           (!hashcmp(cb.nsha1, sha1) ||
+           (oideq(&cb.noid, &oid) ||
             /* 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);
+            ((commit = lookup_commit_reference_gently(r, &oid, 1)) != NULL &&
+             oideq(&cb.noid, &commit->object.oid)))) {
+               const char *from = ref;
+               if (!skip_prefix(from, "refs/tags/", &from))
+                       skip_prefix(from, "refs/remotes/", &from);
+               state->detached_from = xstrdup(from);
        } else
                state->detached_from =
-                       xstrdup(find_unique_abbrev(cb.nsha1, DEFAULT_ABBREV));
-       hashcpy(state->detached_sha1, cb.nsha1);
+                       xstrdup(find_unique_abbrev(&cb.noid, DEFAULT_ABBREV));
+       oidcpy(&state->detached_oid, &cb.noid);
+       state->detached_at = !get_oid("HEAD", &oid) &&
+                            oideq(&oid, &state->detached_oid);
 
        free(ref);
        strbuf_release(&cb.buf);
 }
 
-void wt_status_get_state(struct wt_status_state *state,
-                        int get_detached_from)
+int wt_status_check_rebase(const struct worktree *wt,
+                          struct wt_status_state *state)
 {
        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)) {
+       if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
+               if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
                        state->am_in_progress = 1;
-                       if (!stat(git_path("rebase-apply/patch"), &st) && !st.st_size)
+                       if (!stat(worktree_git_path(wt, "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");
+                       state->branch = get_branch(wt, "rebase-apply/head-name");
+                       state->onto = get_branch(wt, "rebase-apply/onto");
                }
-       } else if (!stat(git_path("rebase-merge"), &st)) {
-               if (!stat(git_path("rebase-merge/interactive"), &st))
+       } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
+               if (!stat(worktree_git_path(wt, "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->branch = get_branch(wt, "rebase-merge/head-name");
+               state->onto = get_branch(wt, "rebase-merge/onto");
+       } else
+               return 0;
+       return 1;
+}
+
+int wt_status_check_bisect(const struct worktree *wt,
+                          struct wt_status_state *state)
+{
+       struct stat st;
+
+       if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
                state->bisect_in_progress = 1;
-               state->branch = read_and_strip_branch("BISECT_START");
+               state->branch = get_branch(wt, "BISECT_START");
+               return 1;
        }
-       if (!stat(git_path("REVERT_HEAD"), &st) &&
-           !get_sha1("REVERT_HEAD", sha1)) {
+       return 0;
+}
+
+void wt_status_get_state(struct repository *r,
+                        struct wt_status_state *state,
+                        int get_detached_from)
+{
+       struct stat st;
+       struct object_id oid;
+       enum replay_action action;
+
+       if (!stat(git_path_merge_head(r), &st)) {
+               wt_status_check_rebase(NULL, state);
+               state->merge_in_progress = 1;
+       } else if (wt_status_check_rebase(NULL, state)) {
+               ;               /* all set */
+       } else if (!stat(git_path_cherry_pick_head(r), &st) &&
+                       !get_oid("CHERRY_PICK_HEAD", &oid)) {
+               state->cherry_pick_in_progress = 1;
+               oidcpy(&state->cherry_pick_head_oid, &oid);
+       }
+       wt_status_check_bisect(NULL, state);
+       if (!stat(git_path_revert_head(r), &st) &&
+           !get_oid("REVERT_HEAD", &oid)) {
                state->revert_in_progress = 1;
-               hashcpy(state->revert_head_sha1, sha1);
+               oidcpy(&state->revert_head_oid, &oid);
+       }
+       if (!sequencer_get_last_command(r, &action)) {
+               if (action == REPLAY_PICK) {
+                       state->cherry_pick_in_progress = 1;
+                       oidcpy(&state->cherry_pick_head_oid, &null_oid);
+               } else {
+                       state->revert_in_progress = 1;
+                       oidcpy(&state->revert_head_oid, &null_oid);
+               }
        }
-
        if (get_detached_from)
-               wt_status_get_detached_from(state);
+               wt_status_get_detached_from(r, state);
 }
 
-static void wt_status_print_state(struct wt_status *s,
-                                 struct wt_status_state *state)
+static void wt_longstatus_print_state(struct wt_status *s)
 {
        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);
+       struct wt_status_state *state = &s->state;
+
+       if (state->merge_in_progress) {
+               if (state->rebase_interactive_in_progress) {
+                       show_rebase_information(s, state_color);
+                       fputs("\n", s->fp);
+               }
+               show_merge_in_progress(s, state_color);
+       } else if (state->am_in_progress)
+               show_am_in_progress(s, state_color);
        else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
-               show_rebase_in_progress(s, state, state_color);
+               show_rebase_in_progress(s, state_color);
        else if (state->cherry_pick_in_progress)
-               show_cherry_pick_in_progress(s, state, state_color);
+               show_cherry_pick_in_progress(s, state_color);
        else if (state->revert_in_progress)
-               show_revert_in_progress(s, state, state_color);
+               show_revert_in_progress(s, state_color);
        if (state->bisect_in_progress)
-               show_bisect_in_progress(s, state, state_color);
+               show_bisect_in_progress(s, state_color);
 }
 
-void wt_status_print(struct wt_status *s)
+static void wt_longstatus_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")) {
+               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 ");
+                       if (s->state.rebase_in_progress ||
+                           s->state.rebase_interactive_in_progress) {
+                               if (s->state.rebase_interactive_in_progress)
+                                       on_what = _("interactive rebase in progress; onto ");
+                               else
+                                       on_what = _("rebase in progress; onto ");
+                               branch_name = s->state.onto;
+                       } else if (s->state.detached_from) {
+                               branch_name = s->state.detached_from;
+                               if (s->state.detached_at)
+                                       on_what = HEAD_DETACHED_AT;
                                else
-                                       on_what = _("HEAD detached from ");
+                                       on_what = HEAD_DETACHED_FROM;
                        } else {
                                branch_name = "";
                                on_what = _("Not currently on any branch.");
                        }
-               }
+               } else
+                       skip_prefix(branch_name, "refs/heads/", &branch_name);
                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_longstatus_print_tracking(s);
        }
 
-       wt_status_print_state(s, &state);
-       free(state.branch);
-       free(state.onto);
-       free(state.detached_from);
+       wt_longstatus_print_state(s);
 
        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->commit_template
+                                ? _("Initial commit")
+                                : _("No commits yet"));
                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);
+       wt_longstatus_print_updated(s);
+       wt_longstatus_print_unmerged(s);
+       wt_longstatus_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 */
+               wt_longstatus_print_submodule_summary(s, 0);  /* staged */
+               wt_longstatus_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");
+               wt_longstatus_print_other(s, &s->untracked, _("Untracked files"), "add");
+               if (s->show_ignored_mode)
+                       wt_longstatus_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,
@@ -1367,14 +1749,14 @@ void wt_status_print(struct wt_status *s)
                                           "new files yourself (see 'git help status')."),
                                         s->untracked_in_ms / 1000.0);
                }
-       } else if (s->commitable)
+       } else if (s->committable)
                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) {
+               wt_longstatus_print_verbose(s);
+       if (!s->committable) {
                if (s->amend)
                        status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
                else if (s->nowarn)
@@ -1403,8 +1785,10 @@ void wt_status_print(struct wt_status *s)
                        else
                                printf(_("nothing to commit\n"));
                } else
-                       printf(_("nothing to commit, working directory clean\n"));
+                       printf(_("nothing to commit, working tree clean\n"));
        }
+       if(s->show_stash)
+               wt_longstatus_print_stash_summary(s);
 }
 
 static void wt_shortstatus_unmerged(struct string_list_item *it,
@@ -1450,13 +1834,14 @@ static void wt_shortstatus_status(struct string_list_item *it,
        putchar(' ');
        if (s->null_termination) {
                fprintf(stdout, "%s%c", it->string, 0);
-               if (d->head_path)
-                       fprintf(stdout, "%s%c", d->head_path, 0);
+               if (d->rename_source)
+                       fprintf(stdout, "%s%c", d->rename_source, 0);
        } else {
                struct strbuf onebuf = STRBUF_INIT;
                const char *one;
-               if (d->head_path) {
-                       one = quote_path(d->head_path, s->prefix, &onebuf);
+
+               if (d->rename_source) {
+                       one = quote_path(d->rename_source, s->prefix, &onebuf);
                        if (*one != '"' && strchr(one, ' ') != NULL) {
                                putchar('"');
                                strbuf_addch(&onebuf, '"');
@@ -1499,8 +1884,9 @@ static void wt_shortstatus_print_tracking(struct wt_status *s)
        const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
 
        const char *base;
+       char *short_base;
        const char *branch_name;
-       int num_ours, num_theirs;
+       int num_ours, num_theirs, sti;
        int upstream_is_gone = 0;
 
        color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
@@ -1509,98 +1895,86 @@ static void wt_shortstatus_print_tracking(struct wt_status *s)
                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);
-       }
+#define LABEL(string) (s->no_gettext ? (string) : _(string))
 
-       branch = branch_get(s->branch + 11);
        if (s->is_initial)
-               color_fprintf(s->fp, header_color, _("Initial commit on "));
+               color_fprintf(s->fp, header_color, LABEL(N_("No commits yet on ")));
+
+       if (!strcmp(s->branch, "HEAD")) {
+               color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
+                             LABEL(N_("HEAD (no branch)")));
+               goto conclude;
+       }
+
+       skip_prefix(branch_name, "refs/heads/", &branch_name);
+
+       branch = branch_get(branch_name);
 
        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 */
+       sti = stat_tracking_info(branch, &num_ours, &num_theirs, &base,
+                                0, s->ahead_behind_flags);
+       if (sti < 0) {
+               if (!base)
+                       goto conclude;
+
                upstream_is_gone = 1;
-               break;
-       default:
-               /* with base */
-               break;
        }
 
-       base = branch->merge[0]->dst;
-       base = shorten_unambiguous_ref(base, 0);
+       short_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;
-       }
+       color_fprintf(s->fp, branch_color_remote, "%s", short_base);
+       free(short_base);
 
-#define LABEL(string) (s->no_gettext ? (string) : _(string))
+       if (!upstream_is_gone && !sti)
+               goto conclude;
 
        color_fprintf(s->fp, header_color, " [");
        if (upstream_is_gone) {
                color_fprintf(s->fp, header_color, LABEL(N_("gone")));
+       } else if (s->ahead_behind_flags == AHEAD_BEHIND_QUICK) {
+               color_fprintf(s->fp, header_color, LABEL(N_("different")));
        } 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, 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, 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, "]");
+ conclude:
        fputc(s->null_termination ? '\0' : '\n', s->fp);
 }
 
-void wt_shortstatus_print(struct wt_status *s)
+static void wt_shortstatus_print(struct wt_status *s)
 {
-       int i;
+       struct string_list_item *it;
 
        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;
+       for_each_string_list_item(it, &s->change) {
+               struct wt_status_change_data *d = it->util;
 
-               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]);
+       for_each_string_list_item(it, &s->untracked)
                wt_shortstatus_other(it, s, "??");
-       }
-       for (i = 0; i < s->ignored.nr; i++) {
-               struct string_list_item *it;
 
-               it = &(s->ignored.items[i]);
+       for_each_string_list_item(it, &s->ignored)
                wt_shortstatus_other(it, s, "!!");
-       }
 }
 
-void wt_porcelain_print(struct wt_status *s)
+static void wt_porcelain_print(struct wt_status *s)
 {
        s->use_color = 0;
        s->relative_paths = 0;
@@ -1608,3 +1982,506 @@ void wt_porcelain_print(struct wt_status *s)
        s->no_gettext = 1;
        wt_shortstatus_print(s);
 }
+
+/*
+ * Print branch information for porcelain v2 output.  These lines
+ * are printed when the '--branch' parameter is given.
+ *
+ *    # branch.oid <commit><eol>
+ *    # branch.head <head><eol>
+ *   [# branch.upstream <upstream><eol>
+ *   [# branch.ab +<ahead> -<behind><eol>]]
+ *
+ *      <commit> ::= the current commit hash or the the literal
+ *                   "(initial)" to indicate an initialized repo
+ *                   with no commits.
+ *
+ *        <head> ::= <branch_name> the current branch name or
+ *                   "(detached)" literal when detached head or
+ *                   "(unknown)" when something is wrong.
+ *
+ *    <upstream> ::= the upstream branch name, when set.
+ *
+ *       <ahead> ::= integer ahead value or '?'.
+ *
+ *      <behind> ::= integer behind value or '?'.
+ *
+ * The end-of-line is defined by the -z flag.
+ *
+ *                 <eol> ::= NUL when -z,
+ *                           LF when NOT -z.
+ *
+ * When an upstream is set and present, the 'branch.ab' line will
+ * be printed with the ahead/behind counts for the branch and the
+ * upstream.  When AHEAD_BEHIND_QUICK is requested and the branches
+ * are different, '?' will be substituted for the actual count.
+ */
+static void wt_porcelain_v2_print_tracking(struct wt_status *s)
+{
+       struct branch *branch;
+       const char *base;
+       const char *branch_name;
+       int ab_info, nr_ahead, nr_behind;
+       char eol = s->null_termination ? '\0' : '\n';
+
+       fprintf(s->fp, "# branch.oid %s%c",
+                       (s->is_initial ? "(initial)" : sha1_to_hex(s->sha1_commit)),
+                       eol);
+
+       if (!s->branch)
+               fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
+       else {
+               if (!strcmp(s->branch, "HEAD")) {
+                       fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
+
+                       if (s->state.rebase_in_progress ||
+                           s->state.rebase_interactive_in_progress)
+                               branch_name = s->state.onto;
+                       else if (s->state.detached_from)
+                               branch_name = s->state.detached_from;
+                       else
+                               branch_name = "";
+               } else {
+                       branch_name = NULL;
+                       skip_prefix(s->branch, "refs/heads/", &branch_name);
+
+                       fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
+               }
+
+               /* Lookup stats on the upstream tracking branch, if set. */
+               branch = branch_get(branch_name);
+               base = NULL;
+               ab_info = stat_tracking_info(branch, &nr_ahead, &nr_behind,
+                                            &base, 0, s->ahead_behind_flags);
+               if (base) {
+                       base = shorten_unambiguous_ref(base, 0);
+                       fprintf(s->fp, "# branch.upstream %s%c", base, eol);
+                       free((char *)base);
+
+                       if (ab_info > 0) {
+                               /* different */
+                               if (nr_ahead || nr_behind)
+                                       fprintf(s->fp, "# branch.ab +%d -%d%c",
+                                               nr_ahead, nr_behind, eol);
+                               else
+                                       fprintf(s->fp, "# branch.ab +? -?%c",
+                                               eol);
+                       } else if (!ab_info) {
+                               /* same */
+                               fprintf(s->fp, "# branch.ab +0 -0%c", eol);
+                       }
+               }
+       }
+}
+
+/*
+ * Convert various submodule status values into a
+ * fixed-length string of characters in the buffer provided.
+ */
+static void wt_porcelain_v2_submodule_state(
+       struct wt_status_change_data *d,
+       char sub[5])
+{
+       if (S_ISGITLINK(d->mode_head) ||
+               S_ISGITLINK(d->mode_index) ||
+               S_ISGITLINK(d->mode_worktree)) {
+               sub[0] = 'S';
+               sub[1] = d->new_submodule_commits ? 'C' : '.';
+               sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
+               sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
+       } else {
+               sub[0] = 'N';
+               sub[1] = '.';
+               sub[2] = '.';
+               sub[3] = '.';
+       }
+       sub[4] = 0;
+}
+
+/*
+ * Fix-up changed entries before we print them.
+ */
+static void wt_porcelain_v2_fix_up_changed(struct string_list_item *it)
+{
+       struct wt_status_change_data *d = it->util;
+
+       if (!d->index_status) {
+               /*
+                * This entry is unchanged in the index (relative to the head).
+                * Therefore, the collect_updated_cb was never called for this
+                * entry (during the head-vs-index scan) and so the head column
+                * fields were never set.
+                *
+                * We must have data for the index column (from the
+                * index-vs-worktree scan (otherwise, this entry should not be
+                * in the list of changes)).
+                *
+                * Copy index column fields to the head column, so that our
+                * output looks complete.
+                */
+               assert(d->mode_head == 0);
+               d->mode_head = d->mode_index;
+               oidcpy(&d->oid_head, &d->oid_index);
+       }
+
+       if (!d->worktree_status) {
+               /*
+                * This entry is unchanged in the worktree (relative to the index).
+                * Therefore, the collect_changed_cb was never called for this entry
+                * (during the index-vs-worktree scan) and so the worktree column
+                * fields were never set.
+                *
+                * We must have data for the index column (from the head-vs-index
+                * scan).
+                *
+                * Copy the index column fields to the worktree column so that
+                * our output looks complete.
+                *
+                * Note that we only have a mode field in the worktree column
+                * because the scan code tries really hard to not have to compute it.
+                */
+               assert(d->mode_worktree == 0);
+               d->mode_worktree = d->mode_index;
+       }
+}
+
+/*
+ * Print porcelain v2 info for tracked entries with changes.
+ */
+static void wt_porcelain_v2_print_changed_entry(
+       struct string_list_item *it,
+       struct wt_status *s)
+{
+       struct wt_status_change_data *d = it->util;
+       struct strbuf buf = STRBUF_INIT;
+       struct strbuf buf_from = STRBUF_INIT;
+       const char *path = NULL;
+       const char *path_from = NULL;
+       char key[3];
+       char submodule_token[5];
+       char sep_char, eol_char;
+
+       wt_porcelain_v2_fix_up_changed(it);
+       wt_porcelain_v2_submodule_state(d, submodule_token);
+
+       key[0] = d->index_status ? d->index_status : '.';
+       key[1] = d->worktree_status ? d->worktree_status : '.';
+       key[2] = 0;
+
+       if (s->null_termination) {
+               /*
+                * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
+                * A single NUL character separates them.
+                */
+               sep_char = '\0';
+               eol_char = '\0';
+               path = it->string;
+               path_from = d->rename_source;
+       } else {
+               /*
+                * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
+                * The source path is only present when necessary.
+                * A single TAB separates them (because paths can contain spaces
+                * which are not escaped and C-quoting does escape TAB characters).
+                */
+               sep_char = '\t';
+               eol_char = '\n';
+               path = quote_path(it->string, s->prefix, &buf);
+               if (d->rename_source)
+                       path_from = quote_path(d->rename_source, s->prefix, &buf_from);
+       }
+
+       if (path_from)
+               fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
+                               key, submodule_token,
+                               d->mode_head, d->mode_index, d->mode_worktree,
+                               oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
+                               d->rename_status, d->rename_score,
+                               path, sep_char, path_from, eol_char);
+       else
+               fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
+                               key, submodule_token,
+                               d->mode_head, d->mode_index, d->mode_worktree,
+                               oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
+                               path, eol_char);
+
+       strbuf_release(&buf);
+       strbuf_release(&buf_from);
+}
+
+/*
+ * Print porcelain v2 status info for unmerged entries.
+ */
+static void wt_porcelain_v2_print_unmerged_entry(
+       struct string_list_item *it,
+       struct wt_status *s)
+{
+       struct wt_status_change_data *d = it->util;
+       struct index_state *istate = s->repo->index;
+       const struct cache_entry *ce;
+       struct strbuf buf_index = STRBUF_INIT;
+       const char *path_index = NULL;
+       int pos, stage, sum;
+       struct {
+               int mode;
+               struct object_id oid;
+       } stages[3];
+       char *key;
+       char submodule_token[5];
+       char unmerged_prefix = 'u';
+       char eol_char = s->null_termination ? '\0' : '\n';
+
+       wt_porcelain_v2_submodule_state(d, submodule_token);
+
+       switch (d->stagemask) {
+       case 1: key = "DD"; break; /* both deleted */
+       case 2: key = "AU"; break; /* added by us */
+       case 3: key = "UD"; break; /* deleted by them */
+       case 4: key = "UA"; break; /* added by them */
+       case 5: key = "DU"; break; /* deleted by us */
+       case 6: key = "AA"; break; /* both added */
+       case 7: key = "UU"; break; /* both modified */
+       default:
+               BUG("unhandled unmerged status %x", d->stagemask);
+       }
+
+       /*
+        * Disregard d.aux.porcelain_v2 data that we accumulated
+        * for the head and index columns during the scans and
+        * replace with the actual stage data.
+        *
+        * Note that this is a last-one-wins for each the individual
+        * stage [123] columns in the event of multiple cache entries
+        * for same stage.
+        */
+       memset(stages, 0, sizeof(stages));
+       sum = 0;
+       pos = index_name_pos(istate, it->string, strlen(it->string));
+       assert(pos < 0);
+       pos = -pos-1;
+       while (pos < istate->cache_nr) {
+               ce = istate->cache[pos++];
+               stage = ce_stage(ce);
+               if (strcmp(ce->name, it->string) || !stage)
+                       break;
+               stages[stage - 1].mode = ce->ce_mode;
+               oidcpy(&stages[stage - 1].oid, &ce->oid);
+               sum |= (1 << (stage - 1));
+       }
+       if (sum != d->stagemask)
+               BUG("observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
+
+       if (s->null_termination)
+               path_index = it->string;
+       else
+               path_index = quote_path(it->string, s->prefix, &buf_index);
+
+       fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
+                       unmerged_prefix, key, submodule_token,
+                       stages[0].mode, /* stage 1 */
+                       stages[1].mode, /* stage 2 */
+                       stages[2].mode, /* stage 3 */
+                       d->mode_worktree,
+                       oid_to_hex(&stages[0].oid), /* stage 1 */
+                       oid_to_hex(&stages[1].oid), /* stage 2 */
+                       oid_to_hex(&stages[2].oid), /* stage 3 */
+                       path_index,
+                       eol_char);
+
+       strbuf_release(&buf_index);
+}
+
+/*
+ * Print porcelain V2 status info for untracked and ignored entries.
+ */
+static void wt_porcelain_v2_print_other(
+       struct string_list_item *it,
+       struct wt_status *s,
+       char prefix)
+{
+       struct strbuf buf = STRBUF_INIT;
+       const char *path;
+       char eol_char;
+
+       if (s->null_termination) {
+               path = it->string;
+               eol_char = '\0';
+       } else {
+               path = quote_path(it->string, s->prefix, &buf);
+               eol_char = '\n';
+       }
+
+       fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
+
+       strbuf_release(&buf);
+}
+
+/*
+ * Print porcelain V2 status.
+ *
+ * [<v2_branch>]
+ * [<v2_changed_items>]*
+ * [<v2_unmerged_items>]*
+ * [<v2_untracked_items>]*
+ * [<v2_ignored_items>]*
+ *
+ */
+static void wt_porcelain_v2_print(struct wt_status *s)
+{
+       struct wt_status_change_data *d;
+       struct string_list_item *it;
+       int i;
+
+       if (s->show_branch)
+               wt_porcelain_v2_print_tracking(s);
+
+       for (i = 0; i < s->change.nr; i++) {
+               it = &(s->change.items[i]);
+               d = it->util;
+               if (!d->stagemask)
+                       wt_porcelain_v2_print_changed_entry(it, s);
+       }
+
+       for (i = 0; i < s->change.nr; i++) {
+               it = &(s->change.items[i]);
+               d = it->util;
+               if (d->stagemask)
+                       wt_porcelain_v2_print_unmerged_entry(it, s);
+       }
+
+       for (i = 0; i < s->untracked.nr; i++) {
+               it = &(s->untracked.items[i]);
+               wt_porcelain_v2_print_other(it, s, '?');
+       }
+
+       for (i = 0; i < s->ignored.nr; i++) {
+               it = &(s->ignored.items[i]);
+               wt_porcelain_v2_print_other(it, s, '!');
+       }
+}
+
+void wt_status_print(struct wt_status *s)
+{
+       trace2_data_intmax("status", s->repo, "count/changed", s->change.nr);
+       trace2_data_intmax("status", s->repo, "count/untracked",
+                          s->untracked.nr);
+       trace2_data_intmax("status", s->repo, "count/ignored", s->ignored.nr);
+
+       trace2_region_enter("status", "print", s->repo);
+
+       switch (s->status_format) {
+       case STATUS_FORMAT_SHORT:
+               wt_shortstatus_print(s);
+               break;
+       case STATUS_FORMAT_PORCELAIN:
+               wt_porcelain_print(s);
+               break;
+       case STATUS_FORMAT_PORCELAIN_V2:
+               wt_porcelain_v2_print(s);
+               break;
+       case STATUS_FORMAT_UNSPECIFIED:
+               BUG("finalize_deferred_config() should have been called");
+               break;
+       case STATUS_FORMAT_NONE:
+       case STATUS_FORMAT_LONG:
+               wt_longstatus_print(s);
+               break;
+       }
+
+       trace2_region_leave("status", "print", s->repo);
+}
+
+/**
+ * Returns 1 if there are unstaged changes, 0 otherwise.
+ */
+int has_unstaged_changes(struct repository *r, int ignore_submodules)
+{
+       struct rev_info rev_info;
+       int result;
+
+       repo_init_revisions(r, &rev_info, NULL);
+       if (ignore_submodules) {
+               rev_info.diffopt.flags.ignore_submodules = 1;
+               rev_info.diffopt.flags.override_submodule_config = 1;
+       }
+       rev_info.diffopt.flags.quick = 1;
+       diff_setup_done(&rev_info.diffopt);
+       result = run_diff_files(&rev_info, 0);
+       return diff_result_code(&rev_info.diffopt, result);
+}
+
+/**
+ * Returns 1 if there are uncommitted changes, 0 otherwise.
+ */
+int has_uncommitted_changes(struct repository *r,
+                           int ignore_submodules)
+{
+       struct rev_info rev_info;
+       int result;
+
+       if (is_index_unborn(r->index))
+               return 0;
+
+       repo_init_revisions(r, &rev_info, NULL);
+       if (ignore_submodules)
+               rev_info.diffopt.flags.ignore_submodules = 1;
+       rev_info.diffopt.flags.quick = 1;
+
+       add_head_to_pending(&rev_info);
+       if (!rev_info.pending.nr) {
+               /*
+                * We have no head (or it's corrupt); use the empty tree,
+                * which will complain if the index is non-empty.
+                */
+               struct tree *tree = lookup_tree(r, the_hash_algo->empty_tree);
+               add_pending_object(&rev_info, &tree->object, "");
+       }
+
+       diff_setup_done(&rev_info.diffopt);
+       result = run_diff_index(&rev_info, 1);
+       return diff_result_code(&rev_info.diffopt, result);
+}
+
+/**
+ * If the work tree has unstaged or uncommitted changes, dies with the
+ * appropriate message.
+ */
+int require_clean_work_tree(struct repository *r,
+                           const char *action,
+                           const char *hint,
+                           int ignore_submodules,
+                           int gently)
+{
+       struct lock_file lock_file = LOCK_INIT;
+       int err = 0, fd;
+
+       fd = repo_hold_locked_index(r, &lock_file, 0);
+       refresh_index(r->index, REFRESH_QUIET, NULL, NULL, NULL);
+       if (0 <= fd)
+               repo_update_index_if_able(r, &lock_file);
+       rollback_lock_file(&lock_file);
+
+       if (has_unstaged_changes(r, ignore_submodules)) {
+               /* TRANSLATORS: the action is e.g. "pull with rebase" */
+               error(_("cannot %s: You have unstaged changes."), _(action));
+               err = 1;
+       }
+
+       if (has_uncommitted_changes(r, ignore_submodules)) {
+               if (err)
+                       error(_("additionally, your index contains uncommitted changes."));
+               else
+                       error(_("cannot %s: Your index contains uncommitted changes."),
+                             _(action));
+               err = 1;
+       }
+
+       if (err) {
+               if (hint)
+                       error("%s", hint);
+               if (!gently)
+                       exit(128);
+       }
+
+       return err;
+}