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-rw-r--r--ext/tk/sample/demos-en/entry1.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/tk/sample/demos-en/entry1.rb b/ext/tk/sample/demos-en/entry1.rb
index fac0afc243..d6b0af2b5d 100644
--- a/ext/tk/sample/demos-en/entry1.rb
+++ b/ext/tk/sample/demos-en/entry1.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
#
# entry (no scrollbars) widget demo (called by 'widget')
#