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-rw-r--r--m4/posix-shell.m42
1 files changed, 2 insertions, 0 deletions
diff --git a/m4/posix-shell.m4 b/m4/posix-shell.m4
index 4c56193..95a19a9 100644
--- a/m4/posix-shell.m4
+++ b/m4/posix-shell.m4
@@ -1,3 +1,5 @@
+dnl SPDX-License-Identifier: FSFULLR
+
# Find a POSIX-conforming shell.
# Copyright (C) 2007-2008 Free Software Foundation, Inc.