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

> 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.
>
> Signed-off-by: Jakub Narebski <jnareb@gmail.com>
> ---
>  gitweb/gitweb.perl |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
> index fa8cc02..091cf9c 100755
> --- 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