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-rw-r--r--usr.bin/m4/main.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/usr.bin/m4/main.c b/usr.bin/m4/main.c
index 92d1ea3..c43dedd 100644
--- a/usr.bin/m4/main.c
+++ b/usr.bin/m4/main.c
@@ -2,6 +2,8 @@
/* $NetBSD: main.c,v 1.12 1997/02/08 23:54:49 cgd Exp $ */
/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
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