[PATCH 3/3] gitweb: Add support to Link: tag

The tip tree is the one of major subsystem tree in the
Linux kernel project. On the tip tree, the Link: tag is
used for tracking the original discussion or context.
Since it's ususally in the s-o-b area, it'd be better
using same style with others.

Also as it tends to contain a message-id sent from git
send-email, a part of the line which has more than 8
(hex-)digit characters would set a wrong hyperlink
like [1]. Fix it by not using format_log_line_html().

[1] git.kernel.org/?p=linux/kernel/git/tip/tip.git;a=commit;h=08942f6d5d992e9486b07653fd87ea8182a22fa0

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 gitweb/gitweb.perl |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index e0701af..d07bcb7 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl

@@ -4493,6 +4493,13 @@ sub git_print_log {
 				print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
 			}
 			next;
+		} elsif ($line =~ m,^ *link[ :](http://[\w/~.@%&=?+-]*),i) {
+			$empty = 0;
+			if (! $opts{'-remove_signoff'}) {
+				print "<span class=\"signoff\">Link: <a href=\"" . esc_html($1) . "\">" .
+					esc_html($1) . "</a></span><br/>\n";
+			}
+			next;
 		}
 
 		# print only one empty line

-- 
1.7.10.2