This patch, put together by Manuel Novoa III, is a merge of work
done by Evin Robertson (bug#1105) and work from Manuel to make
usage messages occupy less space and simplify how usage messages
are displayed.
diff --git a/dumpkmap.c b/dumpkmap.c
index 4ab711e..b9f1bd2 100644
--- a/dumpkmap.c
+++ b/dumpkmap.c
@@ -48,7 +48,7 @@
 	char flags[MAX_NR_KEYMAPS], magic[] = "bkeymap";
 
 	if (argc>=2 && *argv[1]=='-') {
-		usage(dumpkmap_usage);
+		show_usage();
 	}
 
 	fd = open("/dev/tty0", O_RDWR);