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/coreutils/tail.c b/coreutils/tail.c
index d45b29c..a3b8f6d 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -103,7 +103,7 @@
 				break;
 #endif
 			default:
-				usage(tail_usage);
+				show_usage();
 		}
 	}