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