Re: [PATCH 07/14] t7800-difftool.sh: Fix a test failure on Cygwin

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

David Aguilar <davvid@gmail.com> writes:

>> diff --git a/git-difftool.perl b/git-difftool.perl
>> index e95e4ad..ced1615 100755
>> --- a/git-difftool.perl
>> +++ b/git-difftool.perl
>> @@ -52,6 +52,7 @@ sub generate_command
>>  	my @command = (exe('git'), 'diff');
>>  	my $skip_next = 0;
>>  	my $idx = -1;
>> +	my $prompt = '';
>
> Would it be simpler to set $prompt = 1 and then
> flip it to 0 when -y | or --no-prompt is supplied?
> ...
>
> This would become:
>
> 	if ($prompt) {
> 		...
> 	}
> 	else {
> 		...
> 	}

But that is not what the patch does, is it?

Isn't it more like initializing $prompt to undef and then the above
condition becomes:

	if (!defined $prompt) {
        	; # nothing
        elsif ($prompt) {
		setenv PROMPT true
	} else {
		setenv NO_PROMPT true
	}

no?