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-rw-r--r--lib/rdoc/parser/ruby.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/rdoc/parser/ruby.rb b/lib/rdoc/parser/ruby.rb
index ce1083edc7..ac7094f488 100644
--- a/lib/rdoc/parser/ruby.rb
+++ b/lib/rdoc/parser/ruby.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
##
# This file contains stuff stolen outright from:
#