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-rw-r--r--ext/tk/lib/tkextlib/bwidget/entry.rb5
1 files changed, 5 insertions, 0 deletions
diff --git a/ext/tk/lib/tkextlib/bwidget/entry.rb b/ext/tk/lib/tkextlib/bwidget/entry.rb
index 9867a1ac36..855d2194f2 100644
--- a/ext/tk/lib/tkextlib/bwidget/entry.rb
+++ b/ext/tk/lib/tkextlib/bwidget/entry.rb
@@ -21,6 +21,11 @@ class Tk::BWidget::Entry
WidgetClassName = 'Entry'.freeze
WidgetClassNames[WidgetClassName] = self
+ def __tkvariable_optkeys
+ super() << 'helpvar'
+ end
+ private :__tkvariable_optkeys
+
def invoke
tk_send_without_enc('invoke')
self