Re: [PATCH] gitweb: Fix "Use of uninitialized value" warning in git_feed

[Jakub Narebski <jnareb@gmail.com>]

Junio C Hamano wrote:
> Jakub Narebski <jnareb@gmail.com> writes:
> 
>> Initial (root) commit has no parents, and $co{'parent'} is
>> undefined. Use '--root' for initial commit.
>>
>> This fixes "Use of uninitialized value in open at gitweb/gitweb.perl
>> line 4925." warning.
[...]
>> --- a/gitweb/gitweb.perl
>> +++ b/gitweb/gitweb.perl
>> @@ -4923,7 +4923,8 @@ XML
>>  
>>  		# get list of changed files
>>  		open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
>> -			$co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
>> +			$co{'parent'} || "--root",
>> +			$co{'id'}, "--", (defined $file_name ? $file_name : ())
>>  			or next;
>>  		my @difftree = map { chomp; $_ } <$fd>;
>>  		close $fd
> 
> I do not think you would need to make --root conditional...

I need at last make $co{'parent'} conditional, i.e. at least 
"$co{'parent'} || ()" or equivalent (e.g. like for $file_name).
I cannot omit $co{'parent'} because parents might be rewritten;
feeds accept now path limiting. So why not this way?
-- 
Jakub Narebski
Poland