tesing diff list

test

diff -u -r1.23 -r1.24
--- main.c	15 Feb 2004 20:49:37 -0000	1.23
+++ main.c	16 Feb 2004 19:59:03 -0000	1.24
@@ -1,5 +1,7 @@

 
 /* a change */

+/* a change */
+/* a change */

 
 #include <stdio.h>