[PATCH] gitweb: link base commit (hpb) to blobdiff output

[Martin Koegler <mkoegler@auto.tuwien.ac.at>]

blobdiff only has links for the "TO" commit. This patch
adds the same links for the "FROM" commit.

Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
---
 gitweb/gitweb.perl |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index e3c2918..4c371b2 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -4014,6 +4014,21 @@ sub git_blobdiff {
 			                       hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
 			                       file_name=>$file_name, file_parent=>$file_parent)},
 			        "raw");
+		if (defined $hash_parent_base && (my %co = parse_commit($hash_parent_base))) {
+			$formats_nav .= " | from: ".
+				$cgi->a({-href => href(action=>"commit",
+				                       hash=>$hash_parent_base)},
+				        "commit")
+				." | ".
+				$cgi->a({-href => href(action=>"commitdiff",
+				                       hash=>$hash_parent_base)},
+				        "commitdiff")
+				." | ".
+				$cgi->a({-href => href(action=>"tree",
+						       hash=>$co{'tree'},
+				                       hash_base=>$hash_parent_base)},
+				        "tree");
+		}
 		git_header_html(undef, $expires);
 		if (defined $hash_base && (my %co = parse_commit($hash_base))) {
 			git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
-- 
1.5.1.rc1.51.gb08b-dirty