--- /tmp/a	2014-07-23 13:05:21.205232023 +0700
+++ /tmp/a	2014-07-23 13:05:23.878564903 +0700
@@ -1,4 +1,5 @@
 1
 2
+3
 4
 5


# ---
#
# some comment without diff.
#
# ---