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-rw-r--r--lib/rexml/attlistdecl.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/rexml/attlistdecl.rb b/lib/rexml/attlistdecl.rb
index e2135d9e83..dc1d2add0b 100644
--- a/lib/rexml/attlistdecl.rb
+++ b/lib/rexml/attlistdecl.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
#vim:ts=2 sw=2 noexpandtab:
require 'rexml/child'
require 'rexml/source'