--- file.old	2012-09-07 12:58:02.000000000 +0700
+++ file.new	2012-09-07 12:58:39.000000000 +0700
@@ -1,6 +1,8 @@
 line 1
-line 2
 line 3
-line 4
-line 5
+
+  line 4 - modified
+  modified line 5
 line 6
+line 7
+line 8