Re: [PATCH] git-add--interactive: print message if there are no untracked files

[Junio C Hamano <gitster@pobox.com>]

Junio C Hamano <gitster@pobox.com> writes:

>>  sub add_untracked_cmd {
>> -	my @add = list_and_choose({ PROMPT => 'Add untracked' },
>> -				  list_untracked());
>> -	if (@add) {
>> -		system(qw(git update-index --add --), @add);
>> -		say_n_paths('added', @add);
>> +	if (system(qw(git ls-files --others --exclude-standard --))) {
>
> But this ls-files invocation that knows too much about how
> list_untracked() computes things does not.
>
> Why not
> ...
> or something instead?

Actually, is there any case where list_and_choose() should give a
prompt to choose from zero candidates?

In other words, I am wondering if this affects other callers of
list_and_choose in any negative way.

 git-add--interactive.perl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index 94b988c..46ed9a7 100755
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -519,6 +519,10 @@ sub error_msg {
 sub list_and_choose {
 	my ($opts, @stuff) = @_;
 	my (@chosen, @return);
+
+	if (!@stuff) {
+		return @return;
+	}
 	my $i;
 	my @prefixes = find_unique_prefixes(@stuff) unless $opts->{LIST_ONLY};