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-rw-r--r--ext/tk/lib/tkextlib/blt.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/ext/tk/lib/tkextlib/blt.rb b/ext/tk/lib/tkextlib/blt.rb
index 8d58c1f1bc..8b132e41a7 100644
--- a/ext/tk/lib/tkextlib/blt.rb
+++ b/ext/tk/lib/tkextlib/blt.rb
@@ -19,6 +19,8 @@ TkPackage.require('BLT')
module Tk
module BLT
TkComm::TkExtlibAutoloadModule.unshift(self)
+ # Require autoload-symbols which is a same name as widget classname.
+ # Those are used at TkComm._genobj_for_tkwidget method.
extend TkCore