[ruby/irb] Restore IRB::InputCompletor for compatibility (https://github.com/ruby/irb/pull/730)
https://github.com/ruby/irb/commit/77265efc5f
[ruby/irb] Restore IRB::InputCompletor for compatibility
(https://github.com/ruby/irb/pull/730)
https://github.com/ruby/irb/commit/77265efc5f