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-rw-r--r--ext/tk/lib/tkextlib/bwidget/label.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/tk/lib/tkextlib/bwidget/label.rb b/ext/tk/lib/tkextlib/bwidget/label.rb
index 88a504aa50..e8d9352c62 100644
--- a/ext/tk/lib/tkextlib/bwidget/label.rb
+++ b/ext/tk/lib/tkextlib/bwidget/label.rb
@@ -17,7 +17,7 @@ end
class Tk::BWidget::Label
TkCommandNames = ['Label'.freeze].freeze
WidgetClassName = 'Label'.freeze
- WidgetClassNames[WidgetClassName] = self
+ WidgetClassNames[WidgetClassName] ||= self
def __strval_optkeys
super() << 'helptext'