Documentation: fix git-clone manpage not to refer to itself
[git] / git-add--interactive.perl
1 #!/usr/bin/perl -w
2
3 use strict;
4
5 sub run_cmd_pipe {
6         if ($^O eq 'MSWin32') {
7                 my @invalid = grep {m/[":*]/} @_;
8                 die "$^O does not support: @invalid\n" if @invalid;
9                 my @args = map { m/ /o ? "\"$_\"": $_ } @_;
10                 return qx{@args};
11         } else {
12                 my $fh = undef;
13                 open($fh, '-|', @_) or die;
14                 return <$fh>;
15         }
16 }
17
18 my ($GIT_DIR) = run_cmd_pipe(qw(git rev-parse --git-dir));
19
20 if (!defined $GIT_DIR) {
21         exit(1); # rev-parse would have already said "not a git repo"
22 }
23 chomp($GIT_DIR);
24
25 sub refresh {
26         my $fh;
27         open $fh, 'git update-index --refresh |'
28             or die;
29         while (<$fh>) {
30                 ;# ignore 'needs update'
31         }
32         close $fh;
33 }
34
35 sub list_untracked {
36         map {
37                 chomp $_;
38                 $_;
39         }
40         run_cmd_pipe(qw(git ls-files --others --exclude-standard --), @_);
41 }
42
43 my $status_fmt = '%12s %12s %s';
44 my $status_head = sprintf($status_fmt, 'staged', 'unstaged', 'path');
45
46 # Returns list of hashes, contents of each of which are:
47 # PRINT:        print message
48 # VALUE:        pathname
49 # BINARY:       is a binary path
50 # INDEX:        is index different from HEAD?
51 # FILE:         is file different from index?
52 # INDEX_ADDDEL: is it add/delete between HEAD and index?
53 # FILE_ADDDEL:  is it add/delete between index and file?
54
55 sub list_modified {
56         my ($only) = @_;
57         my (%data, @return);
58         my ($add, $del, $adddel, $file);
59
60         for (run_cmd_pipe(qw(git diff-index --cached
61                              --numstat --summary HEAD))) {
62                 if (($add, $del, $file) =
63                     /^([-\d]+)  ([-\d]+)        (.*)/) {
64                         my ($change, $bin);
65                         if ($add eq '-' && $del eq '-') {
66                                 $change = 'binary';
67                                 $bin = 1;
68                         }
69                         else {
70                                 $change = "+$add/-$del";
71                         }
72                         $data{$file} = {
73                                 INDEX => $change,
74                                 BINARY => $bin,
75                                 FILE => 'nothing',
76                         }
77                 }
78                 elsif (($adddel, $file) =
79                        /^ (create|delete) mode [0-7]+ (.*)$/) {
80                         $data{$file}{INDEX_ADDDEL} = $adddel;
81                 }
82         }
83
84         for (run_cmd_pipe(qw(git diff-files --numstat --summary))) {
85                 if (($add, $del, $file) =
86                     /^([-\d]+)  ([-\d]+)        (.*)/) {
87                         if (!exists $data{$file}) {
88                                 $data{$file} = +{
89                                         INDEX => 'unchanged',
90                                         BINARY => 0,
91                                 };
92                         }
93                         my ($change, $bin);
94                         if ($add eq '-' && $del eq '-') {
95                                 $change = 'binary';
96                                 $bin = 1;
97                         }
98                         else {
99                                 $change = "+$add/-$del";
100                         }
101                         $data{$file}{FILE} = $change;
102                         if ($bin) {
103                                 $data{$file}{BINARY} = 1;
104                         }
105                 }
106                 elsif (($adddel, $file) =
107                        /^ (create|delete) mode [0-7]+ (.*)$/) {
108                         $data{$file}{FILE_ADDDEL} = $adddel;
109                 }
110         }
111
112         for (sort keys %data) {
113                 my $it = $data{$_};
114
115                 if ($only) {
116                         if ($only eq 'index-only') {
117                                 next if ($it->{INDEX} eq 'unchanged');
118                         }
119                         if ($only eq 'file-only') {
120                                 next if ($it->{FILE} eq 'nothing');
121                         }
122                 }
123                 push @return, +{
124                         VALUE => $_,
125                         PRINT => (sprintf $status_fmt,
126                                   $it->{INDEX}, $it->{FILE}, $_),
127                         %$it,
128                 };
129         }
130         return @return;
131 }
132
133 sub find_unique {
134         my ($string, @stuff) = @_;
135         my $found = undef;
136         for (my $i = 0; $i < @stuff; $i++) {
137                 my $it = $stuff[$i];
138                 my $hit = undef;
139                 if (ref $it) {
140                         if ((ref $it) eq 'ARRAY') {
141                                 $it = $it->[0];
142                         }
143                         else {
144                                 $it = $it->{VALUE};
145                         }
146                 }
147                 eval {
148                         if ($it =~ /^$string/) {
149                                 $hit = 1;
150                         };
151                 };
152                 if (defined $hit && defined $found) {
153                         return undef;
154                 }
155                 if ($hit) {
156                         $found = $i + 1;
157                 }
158         }
159         return $found;
160 }
161
162 sub list_and_choose {
163         my ($opts, @stuff) = @_;
164         my (@chosen, @return);
165         my $i;
166
167       TOPLOOP:
168         while (1) {
169                 my $last_lf = 0;
170
171                 if ($opts->{HEADER}) {
172                         if (!$opts->{LIST_FLAT}) {
173                                 print "     ";
174                         }
175                         print "$opts->{HEADER}\n";
176                 }
177                 for ($i = 0; $i < @stuff; $i++) {
178                         my $chosen = $chosen[$i] ? '*' : ' ';
179                         my $print = $stuff[$i];
180                         if (ref $print) {
181                                 if ((ref $print) eq 'ARRAY') {
182                                         $print = $print->[0];
183                                 }
184                                 else {
185                                         $print = $print->{PRINT};
186                                 }
187                         }
188                         printf("%s%2d: %s", $chosen, $i+1, $print);
189                         if (($opts->{LIST_FLAT}) &&
190                             (($i + 1) % ($opts->{LIST_FLAT}))) {
191                                 print "\t";
192                                 $last_lf = 0;
193                         }
194                         else {
195                                 print "\n";
196                                 $last_lf = 1;
197                         }
198                 }
199                 if (!$last_lf) {
200                         print "\n";
201                 }
202
203                 return if ($opts->{LIST_ONLY});
204
205                 print $opts->{PROMPT};
206                 if ($opts->{SINGLETON}) {
207                         print "> ";
208                 }
209                 else {
210                         print ">> ";
211                 }
212                 my $line = <STDIN>;
213                 if (!$line) {
214                         print "\n";
215                         $opts->{ON_EOF}->() if $opts->{ON_EOF};
216                         last;
217                 }
218                 chomp $line;
219                 last if $line eq '';
220                 for my $choice (split(/[\s,]+/, $line)) {
221                         my $choose = 1;
222                         my ($bottom, $top);
223
224                         # Input that begins with '-'; unchoose
225                         if ($choice =~ s/^-//) {
226                                 $choose = 0;
227                         }
228                         # A range can be specified like 5-7
229                         if ($choice =~ /^(\d+)-(\d+)$/) {
230                                 ($bottom, $top) = ($1, $2);
231                         }
232                         elsif ($choice =~ /^\d+$/) {
233                                 $bottom = $top = $choice;
234                         }
235                         elsif ($choice eq '*') {
236                                 $bottom = 1;
237                                 $top = 1 + @stuff;
238                         }
239                         else {
240                                 $bottom = $top = find_unique($choice, @stuff);
241                                 if (!defined $bottom) {
242                                         print "Huh ($choice)?\n";
243                                         next TOPLOOP;
244                                 }
245                         }
246                         if ($opts->{SINGLETON} && $bottom != $top) {
247                                 print "Huh ($choice)?\n";
248                                 next TOPLOOP;
249                         }
250                         for ($i = $bottom-1; $i <= $top-1; $i++) {
251                                 next if (@stuff <= $i || $i < 0);
252                                 $chosen[$i] = $choose;
253                         }
254                 }
255                 last if ($opts->{IMMEDIATE});
256         }
257         for ($i = 0; $i < @stuff; $i++) {
258                 if ($chosen[$i]) {
259                         push @return, $stuff[$i];
260                 }
261         }
262         return @return;
263 }
264
265 sub status_cmd {
266         list_and_choose({ LIST_ONLY => 1, HEADER => $status_head },
267                         list_modified());
268         print "\n";
269 }
270
271 sub say_n_paths {
272         my $did = shift @_;
273         my $cnt = scalar @_;
274         print "$did ";
275         if (1 < $cnt) {
276                 print "$cnt paths\n";
277         }
278         else {
279                 print "one path\n";
280         }
281 }
282
283 sub update_cmd {
284         my @mods = list_modified('file-only');
285         return if (!@mods);
286
287         my @update = list_and_choose({ PROMPT => 'Update',
288                                        HEADER => $status_head, },
289                                      @mods);
290         if (@update) {
291                 system(qw(git update-index --add --remove --),
292                        map { $_->{VALUE} } @update);
293                 say_n_paths('updated', @update);
294         }
295         print "\n";
296 }
297
298 sub revert_cmd {
299         my @update = list_and_choose({ PROMPT => 'Revert',
300                                        HEADER => $status_head, },
301                                      list_modified());
302         if (@update) {
303                 my @lines = run_cmd_pipe(qw(git ls-tree HEAD --),
304                                          map { $_->{VALUE} } @update);
305                 my $fh;
306                 open $fh, '| git update-index --index-info'
307                     or die;
308                 for (@lines) {
309                         print $fh $_;
310                 }
311                 close($fh);
312                 for (@update) {
313                         if ($_->{INDEX_ADDDEL} &&
314                             $_->{INDEX_ADDDEL} eq 'create') {
315                                 system(qw(git update-index --force-remove --),
316                                        $_->{VALUE});
317                                 print "note: $_->{VALUE} is untracked now.\n";
318                         }
319                 }
320                 refresh();
321                 say_n_paths('reverted', @update);
322         }
323         print "\n";
324 }
325
326 sub add_untracked_cmd {
327         my @add = list_and_choose({ PROMPT => 'Add untracked' },
328                                   list_untracked());
329         if (@add) {
330                 system(qw(git update-index --add --), @add);
331                 say_n_paths('added', @add);
332         }
333         print "\n";
334 }
335
336 sub parse_diff {
337         my ($path) = @_;
338         my @diff = run_cmd_pipe(qw(git diff-files -p --), $path);
339         my (@hunk) = { TEXT => [] };
340
341         for (@diff) {
342                 if (/^@@ /) {
343                         push @hunk, { TEXT => [] };
344                 }
345                 push @{$hunk[-1]{TEXT}}, $_;
346         }
347         return @hunk;
348 }
349
350 sub hunk_splittable {
351         my ($text) = @_;
352
353         my @s = split_hunk($text);
354         return (1 < @s);
355 }
356
357 sub parse_hunk_header {
358         my ($line) = @_;
359         my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
360             $line =~ /^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/;
361         $o_cnt = 1 unless defined $o_cnt;
362         $n_cnt = 1 unless defined $n_cnt;
363         return ($o_ofs, $o_cnt, $n_ofs, $n_cnt);
364 }
365
366 sub split_hunk {
367         my ($text) = @_;
368         my @split = ();
369
370         # If there are context lines in the middle of a hunk,
371         # it can be split, but we would need to take care of
372         # overlaps later.
373
374         my ($o_ofs, undef, $n_ofs) = parse_hunk_header($text->[0]);
375         my $hunk_start = 1;
376
377       OUTER:
378         while (1) {
379                 my $next_hunk_start = undef;
380                 my $i = $hunk_start - 1;
381                 my $this = +{
382                         TEXT => [],
383                         OLD => $o_ofs,
384                         NEW => $n_ofs,
385                         OCNT => 0,
386                         NCNT => 0,
387                         ADDDEL => 0,
388                         POSTCTX => 0,
389                 };
390
391                 while (++$i < @$text) {
392                         my $line = $text->[$i];
393                         if ($line =~ /^ /) {
394                                 if ($this->{ADDDEL} &&
395                                     !defined $next_hunk_start) {
396                                         # We have seen leading context and
397                                         # adds/dels and then here is another
398                                         # context, which is trailing for this
399                                         # split hunk and leading for the next
400                                         # one.
401                                         $next_hunk_start = $i;
402                                 }
403                                 push @{$this->{TEXT}}, $line;
404                                 $this->{OCNT}++;
405                                 $this->{NCNT}++;
406                                 if (defined $next_hunk_start) {
407                                         $this->{POSTCTX}++;
408                                 }
409                                 next;
410                         }
411
412                         # add/del
413                         if (defined $next_hunk_start) {
414                                 # We are done with the current hunk and
415                                 # this is the first real change for the
416                                 # next split one.
417                                 $hunk_start = $next_hunk_start;
418                                 $o_ofs = $this->{OLD} + $this->{OCNT};
419                                 $n_ofs = $this->{NEW} + $this->{NCNT};
420                                 $o_ofs -= $this->{POSTCTX};
421                                 $n_ofs -= $this->{POSTCTX};
422                                 push @split, $this;
423                                 redo OUTER;
424                         }
425                         push @{$this->{TEXT}}, $line;
426                         $this->{ADDDEL}++;
427                         if ($line =~ /^-/) {
428                                 $this->{OCNT}++;
429                         }
430                         else {
431                                 $this->{NCNT}++;
432                         }
433                 }
434
435                 push @split, $this;
436                 last;
437         }
438
439         for my $hunk (@split) {
440                 $o_ofs = $hunk->{OLD};
441                 $n_ofs = $hunk->{NEW};
442                 my $o_cnt = $hunk->{OCNT};
443                 my $n_cnt = $hunk->{NCNT};
444
445                 my $head = ("@@ -$o_ofs" .
446                             (($o_cnt != 1) ? ",$o_cnt" : '') .
447                             " +$n_ofs" .
448                             (($n_cnt != 1) ? ",$n_cnt" : '') .
449                             " @@\n");
450                 unshift @{$hunk->{TEXT}}, $head;
451         }
452         return map { $_->{TEXT} } @split;
453 }
454
455 sub find_last_o_ctx {
456         my ($it) = @_;
457         my $text = $it->{TEXT};
458         my ($o_ofs, $o_cnt) = parse_hunk_header($text->[0]);
459         my $i = @{$text};
460         my $last_o_ctx = $o_ofs + $o_cnt;
461         while (0 < --$i) {
462                 my $line = $text->[$i];
463                 if ($line =~ /^ /) {
464                         $last_o_ctx--;
465                         next;
466                 }
467                 last;
468         }
469         return $last_o_ctx;
470 }
471
472 sub merge_hunk {
473         my ($prev, $this) = @_;
474         my ($o0_ofs, $o0_cnt, $n0_ofs, $n0_cnt) =
475             parse_hunk_header($prev->{TEXT}[0]);
476         my ($o1_ofs, $o1_cnt, $n1_ofs, $n1_cnt) =
477             parse_hunk_header($this->{TEXT}[0]);
478
479         my (@line, $i, $ofs, $o_cnt, $n_cnt);
480         $ofs = $o0_ofs;
481         $o_cnt = $n_cnt = 0;
482         for ($i = 1; $i < @{$prev->{TEXT}}; $i++) {
483                 my $line = $prev->{TEXT}[$i];
484                 if ($line =~ /^\+/) {
485                         $n_cnt++;
486                         push @line, $line;
487                         next;
488                 }
489
490                 last if ($o1_ofs <= $ofs);
491
492                 $o_cnt++;
493                 $ofs++;
494                 if ($line =~ /^ /) {
495                         $n_cnt++;
496                 }
497                 push @line, $line;
498         }
499
500         for ($i = 1; $i < @{$this->{TEXT}}; $i++) {
501                 my $line = $this->{TEXT}[$i];
502                 if ($line =~ /^\+/) {
503                         $n_cnt++;
504                         push @line, $line;
505                         next;
506                 }
507                 $ofs++;
508                 $o_cnt++;
509                 if ($line =~ /^ /) {
510                         $n_cnt++;
511                 }
512                 push @line, $line;
513         }
514         my $head = ("@@ -$o0_ofs" .
515                     (($o_cnt != 1) ? ",$o_cnt" : '') .
516                     " +$n0_ofs" .
517                     (($n_cnt != 1) ? ",$n_cnt" : '') .
518                     " @@\n");
519         @{$prev->{TEXT}} = ($head, @line);
520 }
521
522 sub coalesce_overlapping_hunks {
523         my (@in) = @_;
524         my @out = ();
525
526         my ($last_o_ctx);
527
528         for (grep { $_->{USE} } @in) {
529                 my $text = $_->{TEXT};
530                 my ($o_ofs) = parse_hunk_header($text->[0]);
531                 if (defined $last_o_ctx &&
532                     $o_ofs <= $last_o_ctx) {
533                         merge_hunk($out[-1], $_);
534                 }
535                 else {
536                         push @out, $_;
537                 }
538                 $last_o_ctx = find_last_o_ctx($out[-1]);
539         }
540         return @out;
541 }
542
543 sub help_patch_cmd {
544         print <<\EOF ;
545 y - stage this hunk
546 n - do not stage this hunk
547 a - stage this and all the remaining hunks
548 d - do not stage this hunk nor any of the remaining hunks
549 j - leave this hunk undecided, see next undecided hunk
550 J - leave this hunk undecided, see next hunk
551 k - leave this hunk undecided, see previous undecided hunk
552 K - leave this hunk undecided, see previous hunk
553 s - split the current hunk into smaller hunks
554 EOF
555 }
556
557 sub patch_update_cmd {
558         my @mods = list_modified('file-only');
559         @mods = grep { !($_->{BINARY}) } @mods;
560         return if (!@mods);
561
562         my ($it) = list_and_choose({ PROMPT => 'Patch update',
563                                      SINGLETON => 1,
564                                      IMMEDIATE => 1,
565                                      HEADER => $status_head, },
566                                    @mods);
567         return if (!$it);
568
569         my ($ix, $num);
570         my $path = $it->{VALUE};
571         my ($head, @hunk) = parse_diff($path);
572         for (@{$head->{TEXT}}) {
573                 print;
574         }
575         $num = scalar @hunk;
576         $ix = 0;
577
578         while (1) {
579                 my ($prev, $next, $other, $undecided, $i);
580                 $other = '';
581
582                 if ($num <= $ix) {
583                         $ix = 0;
584                 }
585                 for ($i = 0; $i < $ix; $i++) {
586                         if (!defined $hunk[$i]{USE}) {
587                                 $prev = 1;
588                                 $other .= '/k';
589                                 last;
590                         }
591                 }
592                 if ($ix) {
593                         $other .= '/K';
594                 }
595                 for ($i = $ix + 1; $i < $num; $i++) {
596                         if (!defined $hunk[$i]{USE}) {
597                                 $next = 1;
598                                 $other .= '/j';
599                                 last;
600                         }
601                 }
602                 if ($ix < $num - 1) {
603                         $other .= '/J';
604                 }
605                 for ($i = 0; $i < $num; $i++) {
606                         if (!defined $hunk[$i]{USE}) {
607                                 $undecided = 1;
608                                 last;
609                         }
610                 }
611                 last if (!$undecided);
612
613                 if (hunk_splittable($hunk[$ix]{TEXT})) {
614                         $other .= '/s';
615                 }
616                 for (@{$hunk[$ix]{TEXT}}) {
617                         print;
618                 }
619                 print "Stage this hunk [y/n/a/d$other/?]? ";
620                 my $line = <STDIN>;
621                 if ($line) {
622                         if ($line =~ /^y/i) {
623                                 $hunk[$ix]{USE} = 1;
624                         }
625                         elsif ($line =~ /^n/i) {
626                                 $hunk[$ix]{USE} = 0;
627                         }
628                         elsif ($line =~ /^a/i) {
629                                 while ($ix < $num) {
630                                         if (!defined $hunk[$ix]{USE}) {
631                                                 $hunk[$ix]{USE} = 1;
632                                         }
633                                         $ix++;
634                                 }
635                                 next;
636                         }
637                         elsif ($line =~ /^d/i) {
638                                 while ($ix < $num) {
639                                         if (!defined $hunk[$ix]{USE}) {
640                                                 $hunk[$ix]{USE} = 0;
641                                         }
642                                         $ix++;
643                                 }
644                                 next;
645                         }
646                         elsif ($other =~ /K/ && $line =~ /^K/) {
647                                 $ix--;
648                                 next;
649                         }
650                         elsif ($other =~ /J/ && $line =~ /^J/) {
651                                 $ix++;
652                                 next;
653                         }
654                         elsif ($other =~ /k/ && $line =~ /^k/) {
655                                 while (1) {
656                                         $ix--;
657                                         last if (!$ix ||
658                                                  !defined $hunk[$ix]{USE});
659                                 }
660                                 next;
661                         }
662                         elsif ($other =~ /j/ && $line =~ /^j/) {
663                                 while (1) {
664                                         $ix++;
665                                         last if ($ix >= $num ||
666                                                  !defined $hunk[$ix]{USE});
667                                 }
668                                 next;
669                         }
670                         elsif ($other =~ /s/ && $line =~ /^s/) {
671                                 my @split = split_hunk($hunk[$ix]{TEXT});
672                                 if (1 < @split) {
673                                         print "Split into ",
674                                         scalar(@split), " hunks.\n";
675                                 }
676                                 splice(@hunk, $ix, 1,
677                                        map { +{ TEXT => $_, USE => undef } }
678                                        @split);
679                                 $num = scalar @hunk;
680                                 next;
681                         }
682                         else {
683                                 help_patch_cmd($other);
684                                 next;
685                         }
686                         # soft increment
687                         while (1) {
688                                 $ix++;
689                                 last if ($ix >= $num ||
690                                          !defined $hunk[$ix]{USE});
691                         }
692                 }
693         }
694
695         @hunk = coalesce_overlapping_hunks(@hunk);
696
697         my $n_lofs = 0;
698         my @result = ();
699         for (@hunk) {
700                 my $text = $_->{TEXT};
701                 my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
702                     parse_hunk_header($text->[0]);
703
704                 if (!$_->{USE}) {
705                         # We would have added ($n_cnt - $o_cnt) lines
706                         # to the postimage if we were to use this hunk,
707                         # but we didn't.  So the line number that the next
708                         # hunk starts at would be shifted by that much.
709                         $n_lofs -= ($n_cnt - $o_cnt);
710                         next;
711                 }
712                 else {
713                         if ($n_lofs) {
714                                 $n_ofs += $n_lofs;
715                                 $text->[0] = ("@@ -$o_ofs" .
716                                               (($o_cnt != 1)
717                                                ? ",$o_cnt" : '') .
718                                               " +$n_ofs" .
719                                               (($n_cnt != 1)
720                                                ? ",$n_cnt" : '') .
721                                               " @@\n");
722                         }
723                         for (@$text) {
724                                 push @result, $_;
725                         }
726                 }
727         }
728
729         if (@result) {
730                 my $fh;
731
732                 open $fh, '| git apply --cached';
733                 for (@{$head->{TEXT}}, @result) {
734                         print $fh $_;
735                 }
736                 if (!close $fh) {
737                         for (@{$head->{TEXT}}, @result) {
738                                 print STDERR $_;
739                         }
740                 }
741                 refresh();
742         }
743
744         print "\n";
745 }
746
747 sub diff_cmd {
748         my @mods = list_modified('index-only');
749         @mods = grep { !($_->{BINARY}) } @mods;
750         return if (!@mods);
751         my (@them) = list_and_choose({ PROMPT => 'Review diff',
752                                      IMMEDIATE => 1,
753                                      HEADER => $status_head, },
754                                    @mods);
755         return if (!@them);
756         system(qw(git diff-index -p --cached HEAD --),
757                map { $_->{VALUE} } @them);
758 }
759
760 sub quit_cmd {
761         print "Bye.\n";
762         exit(0);
763 }
764
765 sub help_cmd {
766         print <<\EOF ;
767 status        - show paths with changes
768 update        - add working tree state to the staged set of changes
769 revert        - revert staged set of changes back to the HEAD version
770 patch         - pick hunks and update selectively
771 diff          - view diff between HEAD and index
772 add untracked - add contents of untracked files to the staged set of changes
773 EOF
774 }
775
776 sub main_loop {
777         my @cmd = ([ 'status', \&status_cmd, ],
778                    [ 'update', \&update_cmd, ],
779                    [ 'revert', \&revert_cmd, ],
780                    [ 'add untracked', \&add_untracked_cmd, ],
781                    [ 'patch', \&patch_update_cmd, ],
782                    [ 'diff', \&diff_cmd, ],
783                    [ 'quit', \&quit_cmd, ],
784                    [ 'help', \&help_cmd, ],
785         );
786         while (1) {
787                 my ($it) = list_and_choose({ PROMPT => 'What now',
788                                              SINGLETON => 1,
789                                              LIST_FLAT => 4,
790                                              HEADER => '*** Commands ***',
791                                              ON_EOF => \&quit_cmd,
792                                              IMMEDIATE => 1 }, @cmd);
793                 if ($it) {
794                         eval {
795                                 $it->[1]->();
796                         };
797                         if ($@) {
798                                 print "$@";
799                         }
800                 }
801         }
802 }
803
804 refresh();
805 status_cmd();
806 main_loop();