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-rw-r--r--lib/rexml/xmltokens.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/rexml/xmltokens.rb b/lib/rexml/xmltokens.rb
index 4d4dd27f2d..392b47b1d3 100644
--- a/lib/rexml/xmltokens.rb
+++ b/lib/rexml/xmltokens.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
module REXML
# Defines a number of tokens used for parsing XML. Not for general
# consumption.