gitweb: Use light/dark for class names also in 'blame' view

Instead of using "light2" and "dark2" for class names in 'blame' view
(in place of "light" and "dark" classes in other places) to avoid
changing style on hover in 'blame' view while doing it for other views
(like 'shortlog'), use more advanced CSS, relying on the fact that
more specific selector wins.

While at it add a few comments to gitweb CSS file, and consolidate
some repeated info.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2 files changed, 11 insertions, 8 deletions

diff --git a/gitweb/gitweb.css b/gitweb/gitweb.css
index 47633376d..8f68fe309 100644
--- a/gitweb/gitweb.css
+++ b/gitweb/gitweb.css
@@ -226,22 +226,25 @@ th {
 	text-align: left;
 }
 
-tr.light:hover {
-	background-color: #edece6;
-}
-
-tr.dark {
-	background-color: #f6f6f0;
+/* do not change row style on hover for 'blame' view */
+tr.light,
+table.blame .light:hover {
+	background-color: #ffffff;
 }
 
-tr.dark2 {
+tr.dark,
+table.blame .dark:hover {
 	background-color: #f6f6f0;
 }
 
+/* currently both use the same, but it can change */
+tr.light:hover,
 tr.dark:hover {
 	background-color: #edece6;
 }
 
+/* boundary commits in 'blame' view */
+/* and commits without "previous" */
 tr.boundary td.sha1,
 tr.no-previous td.linenr {
 	font-weight: bold;
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index ea1ab5f84..2cb60bedc 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -4801,7 +4801,7 @@ sub git_blame {
 	git_print_page_path($file_name, $ftype, $hash_base);
 
 	# page body
-	my @rev_color = qw(light2 dark2);
+	my @rev_color = qw(light dark);
 	my $num_colors = scalar(@rev_color);
 	my $current_color = 0;
 	my %metainfo = ();