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-rw-r--r--ext/tk/lib/tkextlib/tile/tsquare.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/tk/lib/tkextlib/tile/tsquare.rb b/ext/tk/lib/tkextlib/tile/tsquare.rb
index 600b55e4e7..a81cd7b98a 100644
--- a/ext/tk/lib/tkextlib/tile/tsquare.rb
+++ b/ext/tk/lib/tkextlib/tile/tsquare.rb
@@ -22,7 +22,7 @@ class Tk::Tile::TSquare < TkWindow
TkCommandNames = ['::tsquare'.freeze].freeze
end
WidgetClassName = 'TSquare'.freeze
- WidgetClassNames[WidgetClassName] = self
+ WidgetClassNames[WidgetClassName] ||= self
def self.style(*args)
[self::WidgetClassName, *(args.map!{|a| _get_eval_string(a)})].join('.')