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-rw-r--r--test/rdoc/test_rdoc_markup_to_tt_only.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/rdoc/test_rdoc_markup_to_tt_only.rb b/test/rdoc/test_rdoc_markup_to_tt_only.rb
index 2e950dd1b0..a7918c90ab 100644
--- a/test/rdoc/test_rdoc_markup_to_tt_only.rb
+++ b/test/rdoc/test_rdoc_markup_to_tt_only.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
require 'rdoc/test_case'
class TestRDocMarkupToTtOnly < RDoc::Markup::FormatterTestCase