11.1Snia--- input_c1.in
21.1Snia+++ input_c2.in
31.1Snia@@ -1,15 +1,16 @@
41.1Snia /*
51.1Snia  * A comment 
61.1Snia  *
71.1Snia- * And another  bla
81.1Snia+ * And another bla
91.1Snia  *
101.1Snia- * And yet another
111.1Snia+ * and yet another
121.1Snia  */
131.1Snia 
141.1Snia int
151.1Snia main(void)
161.1Snia {
171.1Snia+
181.1Snia 	printf("something");
191.1Snia 
201.1Snia 	return (0);
211.1Snia }
22