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-rw-r--r--ext/tk/sample/demos-jp/button.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/tk/sample/demos-jp/button.rb b/ext/tk/sample/demos-jp/button.rb
index 20f8cae299..7e9457f5b4 100644
--- a/ext/tk/sample/demos-jp/button.rb
+++ b/ext/tk/sample/demos-jp/button.rb
@@ -1,3 +1,4 @@
+# -*- coding: euc-jp -*-
#
# button widget demo (called by 'widget')
#