irb: Define extension command on the given object

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/irb/extend-command.rb b/lib/irb/extend-command.rb
index 02b7869569..347323247e 100644
--- a/lib/irb/extend-command.rb
+++ b/lib/irb/extend-command.rb
@@ -177,9 +177,9 @@ module IRB # :nodoc:
             args << "&block"
             args = args.join(", ")
             line = __LINE__; eval %[
-              unless self.singleton_class.class_variable_defined?(:@@#{cmd_name}_)
-                self.singleton_class.class_variable_set(:@@#{cmd_name}_, true)
-                def #{cmd_name}_(\#{args})
+              unless singleton_class.class_variable_defined?(:@@#{cmd_name}_)
+                singleton_class.class_variable_set(:@@#{cmd_name}_, true)
+                def self.#{cmd_name}_(\#{args})
                   ExtendCommand::#{cmd_class}.execute(irb_context, \#{args})
                 end
               end