1--- input_c1.in
2+++ input_c2.in
3@@ -1,15 +1,16 @@
4 /*
5  * A comment 
6  *
7- * And another  bla
8+ * And another bla
9  *
10- * And yet another
11+ * and yet another
12  */
13 
14 int
15 main(void)
16 {
17+
18 	printf("something");
19 
20 	return (0);
21 }
22