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-rw-r--r--test/covshow.rb3
1 files changed, 2 insertions, 1 deletions
diff --git a/test/covshow.rb b/test/covshow.rb
index 13274b9..a7e1368 100644
--- a/test/covshow.rb
+++ b/test/covshow.rb
@@ -1,5 +1,6 @@
 # Copyright (C) 2013-2015 all contributors <dtas-all@nongnu.org>
-# License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
+# License: GPL-3.0+ (https://www.gnu.org/licenses/gpl-3.0.txt)
+# frozen_string_literal: true
 #
 # this works with the __covmerge method in test/helper.rb
 # run this file after all tests are run