-#serial 21
+#serial 22
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004 Free
+# Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
dnl Initially derived from code in GNU grep.
dnl Mostly written by Jim Meyering.