apply delta depth bias to already deltified objects
[git] / git-add--interactive.perl
1 #!/usr/bin/perl -w
2
3 use strict;
4
5 sub run_cmd_pipe {
6         my $fh = undef;
7         open($fh, '-|', @_) or die;
8         return <$fh>;
9 }
10
11 my ($GIT_DIR) = run_cmd_pipe(qw(git rev-parse --git-dir));
12
13 if (!defined $GIT_DIR) {
14         exit(1); # rev-parse would have already said "not a git repo"
15 }
16 chomp($GIT_DIR);
17
18 sub refresh {
19         my $fh;
20         open $fh, '-|', qw(git update-index --refresh)
21             or die;
22         while (<$fh>) {
23                 ;# ignore 'needs update'
24         }
25         close $fh;
26 }
27
28 sub list_untracked {
29         map {
30                 chomp $_;
31                 $_;
32         }
33         run_cmd_pipe(qw(git ls-files --others
34                         --exclude-per-directory=.gitignore),
35                      "--exclude-from=$GIT_DIR/info/exclude",
36                      '--', @_);
37 }
38
39 my $status_fmt = '%12s %12s %s';
40 my $status_head = sprintf($status_fmt, 'staged', 'unstaged', 'path');
41
42 # Returns list of hashes, contents of each of which are:
43 # PRINT:        print message
44 # VALUE:        pathname
45 # BINARY:       is a binary path
46 # INDEX:        is index different from HEAD?
47 # FILE:         is file different from index?
48 # INDEX_ADDDEL: is it add/delete between HEAD and index?
49 # FILE_ADDDEL:  is it add/delete between index and file?
50
51 sub list_modified {
52         my ($only) = @_;
53         my (%data, @return);
54         my ($add, $del, $adddel, $file);
55
56         for (run_cmd_pipe(qw(git diff-index --cached
57                              --numstat --summary HEAD))) {
58                 if (($add, $del, $file) =
59                     /^([-\d]+)  ([-\d]+)        (.*)/) {
60                         my ($change, $bin);
61                         if ($add eq '-' && $del eq '-') {
62                                 $change = 'binary';
63                                 $bin = 1;
64                         }
65                         else {
66                                 $change = "+$add/-$del";
67                         }
68                         $data{$file} = {
69                                 INDEX => $change,
70                                 BINARY => $bin,
71                                 FILE => 'nothing',
72                         }
73                 }
74                 elsif (($adddel, $file) =
75                        /^ (create|delete) mode [0-7]+ (.*)$/) {
76                         $data{$file}{INDEX_ADDDEL} = $adddel;
77                 }
78         }
79
80         for (run_cmd_pipe(qw(git diff-files --numstat --summary))) {
81                 if (($add, $del, $file) =
82                     /^([-\d]+)  ([-\d]+)        (.*)/) {
83                         if (!exists $data{$file}) {
84                                 $data{$file} = +{
85                                         INDEX => 'unchanged',
86                                         BINARY => 0,
87                                 };
88                         }
89                         my ($change, $bin);
90                         if ($add eq '-' && $del eq '-') {
91                                 $change = 'binary';
92                                 $bin = 1;
93                         }
94                         else {
95                                 $change = "+$add/-$del";
96                         }
97                         $data{$file}{FILE} = $change;
98                         if ($bin) {
99                                 $data{$file}{BINARY} = 1;
100                         }
101                 }
102                 elsif (($adddel, $file) =
103                        /^ (create|delete) mode [0-7]+ (.*)$/) {
104                         $data{$file}{FILE_ADDDEL} = $adddel;
105                 }
106         }
107
108         for (sort keys %data) {
109                 my $it = $data{$_};
110
111                 if ($only) {
112                         if ($only eq 'index-only') {
113                                 next if ($it->{INDEX} eq 'unchanged');
114                         }
115                         if ($only eq 'file-only') {
116                                 next if ($it->{FILE} eq 'nothing');
117                         }
118                 }
119                 push @return, +{
120                         VALUE => $_,
121                         PRINT => (sprintf $status_fmt,
122                                   $it->{INDEX}, $it->{FILE}, $_),
123                         %$it,
124                 };
125         }
126         return @return;
127 }
128
129 sub find_unique {
130         my ($string, @stuff) = @_;
131         my $found = undef;
132         for (my $i = 0; $i < @stuff; $i++) {
133                 my $it = $stuff[$i];
134                 my $hit = undef;
135                 if (ref $it) {
136                         if ((ref $it) eq 'ARRAY') {
137                                 $it = $it->[0];
138                         }
139                         else {
140                                 $it = $it->{VALUE};
141                         }
142                 }
143                 eval {
144                         if ($it =~ /^$string/) {
145                                 $hit = 1;
146                         };
147                 };
148                 if (defined $hit && defined $found) {
149                         return undef;
150                 }
151                 if ($hit) {
152                         $found = $i + 1;
153                 }
154         }
155         return $found;
156 }
157
158 sub list_and_choose {
159         my ($opts, @stuff) = @_;
160         my (@chosen, @return);
161         my $i;
162
163       TOPLOOP:
164         while (1) {
165                 my $last_lf = 0;
166
167                 if ($opts->{HEADER}) {
168                         if (!$opts->{LIST_FLAT}) {
169                                 print "     ";
170                         }
171                         print "$opts->{HEADER}\n";
172                 }
173                 for ($i = 0; $i < @stuff; $i++) {
174                         my $chosen = $chosen[$i] ? '*' : ' ';
175                         my $print = $stuff[$i];
176                         if (ref $print) {
177                                 if ((ref $print) eq 'ARRAY') {
178                                         $print = $print->[0];
179                                 }
180                                 else {
181                                         $print = $print->{PRINT};
182                                 }
183                         }
184                         printf("%s%2d: %s", $chosen, $i+1, $print);
185                         if (($opts->{LIST_FLAT}) &&
186                             (($i + 1) % ($opts->{LIST_FLAT}))) {
187                                 print "\t";
188                                 $last_lf = 0;
189                         }
190                         else {
191                                 print "\n";
192                                 $last_lf = 1;
193                         }
194                 }
195                 if (!$last_lf) {
196                         print "\n";
197                 }
198
199                 return if ($opts->{LIST_ONLY});
200
201                 print $opts->{PROMPT};
202                 if ($opts->{SINGLETON}) {
203                         print "> ";
204                 }
205                 else {
206                         print ">> ";
207                 }
208                 my $line = <STDIN>;
209                 last if (!$line);
210                 chomp $line;
211                 my $donesomething = 0;
212                 for my $choice (split(/[\s,]+/, $line)) {
213                         my $choose = 1;
214                         my ($bottom, $top);
215
216                         # Input that begins with '-'; unchoose
217                         if ($choice =~ s/^-//) {
218                                 $choose = 0;
219                         }
220                         # A range can be specified like 5-7
221                         if ($choice =~ /^(\d+)-(\d+)$/) {
222                                 ($bottom, $top) = ($1, $2);
223                         }
224                         elsif ($choice =~ /^\d+$/) {
225                                 $bottom = $top = $choice;
226                         }
227                         elsif ($choice eq '*') {
228                                 $bottom = 1;
229                                 $top = 1 + @stuff;
230                         }
231                         else {
232                                 $bottom = $top = find_unique($choice, @stuff);
233                                 if (!defined $bottom) {
234                                         print "Huh ($choice)?\n";
235                                         next TOPLOOP;
236                                 }
237                         }
238                         if ($opts->{SINGLETON} && $bottom != $top) {
239                                 print "Huh ($choice)?\n";
240                                 next TOPLOOP;
241                         }
242                         for ($i = $bottom-1; $i <= $top-1; $i++) {
243                                 next if (@stuff <= $i);
244                                 $chosen[$i] = $choose;
245                                 $donesomething++;
246                         }
247                 }
248                 last if (!$donesomething || $opts->{IMMEDIATE});
249         }
250         for ($i = 0; $i < @stuff; $i++) {
251                 if ($chosen[$i]) {
252                         push @return, $stuff[$i];
253                 }
254         }
255         return @return;
256 }
257
258 sub status_cmd {
259         list_and_choose({ LIST_ONLY => 1, HEADER => $status_head },
260                         list_modified());
261         print "\n";
262 }
263
264 sub say_n_paths {
265         my $did = shift @_;
266         my $cnt = scalar @_;
267         print "$did ";
268         if (1 < $cnt) {
269                 print "$cnt paths\n";
270         }
271         else {
272                 print "one path\n";
273         }
274 }
275
276 sub update_cmd {
277         my @mods = list_modified('file-only');
278         return if (!@mods);
279
280         my @update = list_and_choose({ PROMPT => 'Update',
281                                        HEADER => $status_head, },
282                                      @mods);
283         if (@update) {
284                 system(qw(git update-index --add --remove --),
285                        map { $_->{VALUE} } @update);
286                 say_n_paths('updated', @update);
287         }
288         print "\n";
289 }
290
291 sub revert_cmd {
292         my @update = list_and_choose({ PROMPT => 'Revert',
293                                        HEADER => $status_head, },
294                                      list_modified());
295         if (@update) {
296                 my @lines = run_cmd_pipe(qw(git ls-tree HEAD --),
297                                          map { $_->{VALUE} } @update);
298                 my $fh;
299                 open $fh, '|-', qw(git update-index --index-info)
300                     or die;
301                 for (@lines) {
302                         print $fh $_;
303                 }
304                 close($fh);
305                 for (@update) {
306                         if ($_->{INDEX_ADDDEL} &&
307                             $_->{INDEX_ADDDEL} eq 'create') {
308                                 system(qw(git update-index --force-remove --),
309                                        $_->{VALUE});
310                                 print "note: $_->{VALUE} is untracked now.\n";
311                         }
312                 }
313                 refresh();
314                 say_n_paths('reverted', @update);
315         }
316         print "\n";
317 }
318
319 sub add_untracked_cmd {
320         my @add = list_and_choose({ PROMPT => 'Add untracked' },
321                                   list_untracked());
322         if (@add) {
323                 system(qw(git update-index --add --), @add);
324                 say_n_paths('added', @add);
325         }
326         print "\n";
327 }
328
329 sub parse_diff {
330         my ($path) = @_;
331         my @diff = run_cmd_pipe(qw(git diff-files -p --), $path);
332         my (@hunk) = { TEXT => [] };
333
334         for (@diff) {
335                 if (/^@@ /) {
336                         push @hunk, { TEXT => [] };
337                 }
338                 push @{$hunk[-1]{TEXT}}, $_;
339         }
340         return @hunk;
341 }
342
343 sub hunk_splittable {
344         my ($text) = @_;
345
346         my @s = split_hunk($text);
347         return (1 < @s);
348 }
349
350 sub parse_hunk_header {
351         my ($line) = @_;
352         my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
353             $line =~ /^@@ -(\d+)(?:,(\d+)) \+(\d+)(?:,(\d+)) @@/;
354         return ($o_ofs, $o_cnt, $n_ofs, $n_cnt);
355 }
356
357 sub split_hunk {
358         my ($text) = @_;
359         my @split = ();
360
361         # If there are context lines in the middle of a hunk,
362         # it can be split, but we would need to take care of
363         # overlaps later.
364
365         my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) = parse_hunk_header($text->[0]);
366         my $hunk_start = 1;
367         my $next_hunk_start;
368
369       OUTER:
370         while (1) {
371                 my $next_hunk_start = undef;
372                 my $i = $hunk_start - 1;
373                 my $this = +{
374                         TEXT => [],
375                         OLD => $o_ofs,
376                         NEW => $n_ofs,
377                         OCNT => 0,
378                         NCNT => 0,
379                         ADDDEL => 0,
380                         POSTCTX => 0,
381                 };
382
383                 while (++$i < @$text) {
384                         my $line = $text->[$i];
385                         if ($line =~ /^ /) {
386                                 if ($this->{ADDDEL} &&
387                                     !defined $next_hunk_start) {
388                                         # We have seen leading context and
389                                         # adds/dels and then here is another
390                                         # context, which is trailing for this
391                                         # split hunk and leading for the next
392                                         # one.
393                                         $next_hunk_start = $i;
394                                 }
395                                 push @{$this->{TEXT}}, $line;
396                                 $this->{OCNT}++;
397                                 $this->{NCNT}++;
398                                 if (defined $next_hunk_start) {
399                                         $this->{POSTCTX}++;
400                                 }
401                                 next;
402                         }
403
404                         # add/del
405                         if (defined $next_hunk_start) {
406                                 # We are done with the current hunk and
407                                 # this is the first real change for the
408                                 # next split one.
409                                 $hunk_start = $next_hunk_start;
410                                 $o_ofs = $this->{OLD} + $this->{OCNT};
411                                 $n_ofs = $this->{NEW} + $this->{NCNT};
412                                 $o_ofs -= $this->{POSTCTX};
413                                 $n_ofs -= $this->{POSTCTX};
414                                 push @split, $this;
415                                 redo OUTER;
416                         }
417                         push @{$this->{TEXT}}, $line;
418                         $this->{ADDDEL}++;
419                         if ($line =~ /^-/) {
420                                 $this->{OCNT}++;
421                         }
422                         else {
423                                 $this->{NCNT}++;
424                         }
425                 }
426
427                 push @split, $this;
428                 last;
429         }
430
431         for my $hunk (@split) {
432                 $o_ofs = $hunk->{OLD};
433                 $n_ofs = $hunk->{NEW};
434                 $o_cnt = $hunk->{OCNT};
435                 $n_cnt = $hunk->{NCNT};
436
437                 my $head = ("@@ -$o_ofs" .
438                             (($o_cnt != 1) ? ",$o_cnt" : '') .
439                             " +$n_ofs" .
440                             (($n_cnt != 1) ? ",$n_cnt" : '') .
441                             " @@\n");
442                 unshift @{$hunk->{TEXT}}, $head;
443         }
444         return map { $_->{TEXT} } @split;
445 }
446
447 sub find_last_o_ctx {
448         my ($it) = @_;
449         my $text = $it->{TEXT};
450         my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) = parse_hunk_header($text->[0]);
451         my $i = @{$text};
452         my $last_o_ctx = $o_ofs + $o_cnt;
453         while (0 < --$i) {
454                 my $line = $text->[$i];
455                 if ($line =~ /^ /) {
456                         $last_o_ctx--;
457                         next;
458                 }
459                 last;
460         }
461         return $last_o_ctx;
462 }
463
464 sub merge_hunk {
465         my ($prev, $this) = @_;
466         my ($o0_ofs, $o0_cnt, $n0_ofs, $n0_cnt) =
467             parse_hunk_header($prev->{TEXT}[0]);
468         my ($o1_ofs, $o1_cnt, $n1_ofs, $n1_cnt) =
469             parse_hunk_header($this->{TEXT}[0]);
470
471         my (@line, $i, $ofs, $o_cnt, $n_cnt);
472         $ofs = $o0_ofs;
473         $o_cnt = $n_cnt = 0;
474         for ($i = 1; $i < @{$prev->{TEXT}}; $i++) {
475                 my $line = $prev->{TEXT}[$i];
476                 if ($line =~ /^\+/) {
477                         $n_cnt++;
478                         push @line, $line;
479                         next;
480                 }
481
482                 last if ($o1_ofs <= $ofs);
483
484                 $o_cnt++;
485                 $ofs++;
486                 if ($line =~ /^ /) {
487                         $n_cnt++;
488                 }
489                 push @line, $line;
490         }
491
492         for ($i = 1; $i < @{$this->{TEXT}}; $i++) {
493                 my $line = $this->{TEXT}[$i];
494                 if ($line =~ /^\+/) {
495                         $n_cnt++;
496                         push @line, $line;
497                         next;
498                 }
499                 $ofs++;
500                 $o_cnt++;
501                 if ($line =~ /^ /) {
502                         $n_cnt++;
503                 }
504                 push @line, $line;
505         }
506         my $head = ("@@ -$o0_ofs" .
507                     (($o_cnt != 1) ? ",$o_cnt" : '') .
508                     " +$n0_ofs" .
509                     (($n_cnt != 1) ? ",$n_cnt" : '') .
510                     " @@\n");
511         @{$prev->{TEXT}} = ($head, @line);
512 }
513
514 sub coalesce_overlapping_hunks {
515         my (@in) = @_;
516         my @out = ();
517
518         my ($last_o_ctx);
519
520         for (grep { $_->{USE} } @in) {
521                 my $text = $_->{TEXT};
522                 my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
523                     parse_hunk_header($text->[0]);
524                 if (defined $last_o_ctx &&
525                     $o_ofs <= $last_o_ctx) {
526                         merge_hunk($out[-1], $_);
527                 }
528                 else {
529                         push @out, $_;
530                 }
531                 $last_o_ctx = find_last_o_ctx($out[-1]);
532         }
533         return @out;
534 }
535
536 sub help_patch_cmd {
537         print <<\EOF ;
538 y - stage this hunk
539 n - do not stage this hunk
540 a - stage this and all the remaining hunks
541 d - do not stage this hunk nor any of the remaining hunks
542 j - leave this hunk undecided, see next undecided hunk
543 J - leave this hunk undecided, see next hunk
544 k - leave this hunk undecided, see previous undecided hunk
545 K - leave this hunk undecided, see previous hunk
546 s - split the current hunk into smaller hunks
547 EOF
548 }
549
550 sub patch_update_cmd {
551         my @mods = list_modified('file-only');
552         @mods = grep { !($_->{BINARY}) } @mods;
553         return if (!@mods);
554
555         my ($it) = list_and_choose({ PROMPT => 'Patch update',
556                                      SINGLETON => 1,
557                                      IMMEDIATE => 1,
558                                      HEADER => $status_head, },
559                                    @mods);
560         return if (!$it);
561
562         my ($ix, $num);
563         my $path = $it->{VALUE};
564         my ($head, @hunk) = parse_diff($path);
565         for (@{$head->{TEXT}}) {
566                 print;
567         }
568         $num = scalar @hunk;
569         $ix = 0;
570
571         while (1) {
572                 my ($prev, $next, $other, $undecided, $i);
573                 $other = '';
574
575                 if ($num <= $ix) {
576                         $ix = 0;
577                 }
578                 for ($i = 0; $i < $ix; $i++) {
579                         if (!defined $hunk[$i]{USE}) {
580                                 $prev = 1;
581                                 $other .= '/k';
582                                 last;
583                         }
584                 }
585                 if ($ix) {
586                         $other .= '/K';
587                 }
588                 for ($i = $ix + 1; $i < $num; $i++) {
589                         if (!defined $hunk[$i]{USE}) {
590                                 $next = 1;
591                                 $other .= '/j';
592                                 last;
593                         }
594                 }
595                 if ($ix < $num - 1) {
596                         $other .= '/J';
597                 }
598                 for ($i = 0; $i < $num; $i++) {
599                         if (!defined $hunk[$i]{USE}) {
600                                 $undecided = 1;
601                                 last;
602                         }
603                 }
604                 last if (!$undecided);
605
606                 if (hunk_splittable($hunk[$ix]{TEXT})) {
607                         $other .= '/s';
608                 }
609                 for (@{$hunk[$ix]{TEXT}}) {
610                         print;
611                 }
612                 print "Stage this hunk [y/n/a/d$other/?]? ";
613                 my $line = <STDIN>;
614                 if ($line) {
615                         if ($line =~ /^y/i) {
616                                 $hunk[$ix]{USE} = 1;
617                         }
618                         elsif ($line =~ /^n/i) {
619                                 $hunk[$ix]{USE} = 0;
620                         }
621                         elsif ($line =~ /^a/i) {
622                                 while ($ix < $num) {
623                                         if (!defined $hunk[$ix]{USE}) {
624                                                 $hunk[$ix]{USE} = 1;
625                                         }
626                                         $ix++;
627                                 }
628                                 next;
629                         }
630                         elsif ($line =~ /^d/i) {
631                                 while ($ix < $num) {
632                                         if (!defined $hunk[$ix]{USE}) {
633                                                 $hunk[$ix]{USE} = 0;
634                                         }
635                                         $ix++;
636                                 }
637                                 next;
638                         }
639                         elsif ($other =~ /K/ && $line =~ /^K/) {
640                                 $ix--;
641                                 next;
642                         }
643                         elsif ($other =~ /J/ && $line =~ /^J/) {
644                                 $ix++;
645                                 next;
646                         }
647                         elsif ($other =~ /k/ && $line =~ /^k/) {
648                                 while (1) {
649                                         $ix--;
650                                         last if (!$ix ||
651                                                  !defined $hunk[$ix]{USE});
652                                 }
653                                 next;
654                         }
655                         elsif ($other =~ /j/ && $line =~ /^j/) {
656                                 while (1) {
657                                         $ix++;
658                                         last if ($ix >= $num ||
659                                                  !defined $hunk[$ix]{USE});
660                                 }
661                                 next;
662                         }
663                         elsif ($other =~ /s/ && $line =~ /^s/) {
664                                 my @split = split_hunk($hunk[$ix]{TEXT});
665                                 if (1 < @split) {
666                                         print "Split into ",
667                                         scalar(@split), " hunks.\n";
668                                 }
669                                 splice(@hunk, $ix, 1,
670                                        map { +{ TEXT => $_, USE => undef } }
671                                        @split);
672                                 $num = scalar @hunk;
673                                 next;
674                         }
675                         else {
676                                 help_patch_cmd($other);
677                                 next;
678                         }
679                         # soft increment
680                         while (1) {
681                                 $ix++;
682                                 last if ($ix >= $num ||
683                                          !defined $hunk[$ix]{USE});
684                         }
685                 }
686         }
687
688         @hunk = coalesce_overlapping_hunks(@hunk);
689
690         my ($o_lofs, $n_lofs) = (0, 0);
691         my @result = ();
692         for (@hunk) {
693                 my $text = $_->{TEXT};
694                 my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
695                     parse_hunk_header($text->[0]);
696
697                 if (!$_->{USE}) {
698                         if (!defined $o_cnt) { $o_cnt = 1; }
699                         if (!defined $n_cnt) { $n_cnt = 1; }
700
701                         # We would have added ($n_cnt - $o_cnt) lines
702                         # to the postimage if we were to use this hunk,
703                         # but we didn't.  So the line number that the next
704                         # hunk starts at would be shifted by that much.
705                         $n_lofs -= ($n_cnt - $o_cnt);
706                         next;
707                 }
708                 else {
709                         if ($n_lofs) {
710                                 $n_ofs += $n_lofs;
711                                 $text->[0] = ("@@ -$o_ofs" .
712                                               ((defined $o_cnt)
713                                                ? ",$o_cnt" : '') .
714                                               " +$n_ofs" .
715                                               ((defined $n_cnt)
716                                                ? ",$n_cnt" : '') .
717                                               " @@\n");
718                         }
719                         for (@$text) {
720                                 push @result, $_;
721                         }
722                 }
723         }
724
725         if (@result) {
726                 my $fh;
727
728                 open $fh, '|-', qw(git apply --cached);
729                 for (@{$head->{TEXT}}, @result) {
730                         print $fh $_;
731                 }
732                 if (!close $fh) {
733                         for (@{$head->{TEXT}}, @result) {
734                                 print STDERR $_;
735                         }
736                 }
737                 refresh();
738         }
739
740         print "\n";
741 }
742
743 sub diff_cmd {
744         my @mods = list_modified('index-only');
745         @mods = grep { !($_->{BINARY}) } @mods;
746         return if (!@mods);
747         my (@them) = list_and_choose({ PROMPT => 'Review diff',
748                                      IMMEDIATE => 1,
749                                      HEADER => $status_head, },
750                                    @mods);
751         return if (!@them);
752         system(qw(git diff-index -p --cached HEAD --),
753                map { $_->{VALUE} } @them);
754 }
755
756 sub quit_cmd {
757         print "Bye.\n";
758         exit(0);
759 }
760
761 sub help_cmd {
762         print <<\EOF ;
763 status        - show paths with changes
764 update        - add working tree state to the staged set of changes
765 revert        - revert staged set of changes back to the HEAD version
766 patch         - pick hunks and update selectively
767 diff          - view diff between HEAD and index
768 add untracked - add contents of untracked files to the staged set of changes
769 EOF
770 }
771
772 sub main_loop {
773         my @cmd = ([ 'status', \&status_cmd, ],
774                    [ 'update', \&update_cmd, ],
775                    [ 'revert', \&revert_cmd, ],
776                    [ 'add untracked', \&add_untracked_cmd, ],
777                    [ 'patch', \&patch_update_cmd, ],
778                    [ 'diff', \&diff_cmd, ],
779                    [ 'quit', \&quit_cmd, ],
780                    [ 'help', \&help_cmd, ],
781         );
782         while (1) {
783                 my ($it) = list_and_choose({ PROMPT => 'What now',
784                                              SINGLETON => 1,
785                                              LIST_FLAT => 4,
786                                              HEADER => '*** Commands ***',
787                                              IMMEDIATE => 1 }, @cmd);
788                 if ($it) {
789                         eval {
790                                 $it->[1]->();
791                         };
792                         if ($@) {
793                                 print "$@";
794                         }
795                 }
796         }
797 }
798
799 my @z;
800
801 refresh();
802 status_cmd();
803 main_loop();