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-rw-r--r--gnulib-m4/dup2.m43
1 files changed, 2 insertions, 1 deletions
diff --git a/gnulib-m4/dup2.m4 b/gnulib-m4/dup2.m4
index f6759b64..786121fd 100644
--- a/gnulib-m4/dup2.m4
+++ b/gnulib-m4/dup2.m4
@@ -1,4 +1,5 @@
-#serial 28
+# dup2.m4
+# serial 28
dnl Copyright (C) 2002, 2005, 2007, 2009-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,