Vern says:

Yes, this came up a while ago, and I put together a flex release with
a modified copyright that begins:
     Redistribution and use in source and binary forms, with or
     without modification, are permitted provided that:
[...] feel free to update the copyrights in each of the files with the
one in COPYING.

1 files changed, 12 insertions, 12 deletions

diff --git a/usr.bin/lex/flexdef.h b/usr.bin/lex/flexdef.h
index a6c76e811e5..4e4368c879d 100644
--- a/usr.bin/lex/flexdef.h
+++ b/usr.bin/lex/flexdef.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flexdef.h,v 1.4 1997/07/25 21:05:28 mickey Exp $	*/
+/*	$OpenBSD: flexdef.h,v 1.5 2001/06/17 07:30:42 deraadt Exp $	*/
 
 /* flexdef - definitions file for flex */
 
@@ -13,22 +13,22 @@
  * to contract no. DE-AC03-76SF00098 between the United States
  * Department of Energy and the University of California.
  *
- * Redistribution and use in source and binary forms are permitted provided
- * that: (1) source distributions retain this entire copyright notice and
- * comment, and (2) distributions including binaries display the following
- * acknowledgement:  ``This product includes software developed by the
- * University of California, Berkeley and its contributors'' in the
- * documentation or other materials provided with the distribution and in
- * all advertising materials mentioning features or use of this software.
- * Neither the name of the University nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source distributions
+ * retain this entire copyright notice and comment, and (2) distributions
+ * including binaries display the following acknowledgement:  ``This product
+ * includes software developed by the University of California, Berkeley
+ * and its contributors'' in the documentation or other materials provided
+ * with the distribution and in all advertising materials mentioning
+ * features or use of this software. Neither the name of the University nor
+ * the names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-/* @(#) $Header: /cvs/OpenBSD/src/usr.bin/lex/flexdef.h,v 1.4 1997/07/25 21:05:28 mickey Exp $ (LBL) */
+/* @(#) $Header: /cvs/OpenBSD/src/usr.bin/lex/flexdef.h,v 1.5 2001/06/17 07:30:42 deraadt Exp $ (LBL) */
 
 #include <stdio.h>
 #include <ctype.h>