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-rw-r--r--include/ruby/subst.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/include/ruby/subst.h b/include/ruby/subst.h
index 1f0e6db5a4..cf48a3909c 100644
--- a/include/ruby/subst.h
+++ b/include/ruby/subst.h
@@ -1,5 +1,13 @@
-#ifndef RUBY_SUBST_H
+#ifndef RUBY_SUBST_H /*-*-C++-*-vi:se ft=cpp:*/
#define RUBY_SUBST_H 1
+/**
+ * @file
+ * @author Ruby developers <ruby-core@ruby-lang.org>
+ * @copyright This file is a part of the programming language Ruby.
+ * Permission is hereby granted, to either redistribute and/or
+ * modify this file, provided that the conditions mentioned in the
+ * file COPYING are met. Consult the file for details.
+ */
#undef snprintf
#undef vsnprintf