Issue #1190 has been updated by Roger Pack.


It may be related to not having the rdoc installed (though perhaps not).

irb(main):002:0> help Hash#key?
No ri documentation found in:

Was rdoc run to create documentation?

Note to developer: requested section(s) [Installing Documentation] not found
  irb/workspace-binding.rb -
       $Release Version: 0.9.5$
       $Revision$
       $Date$
       by Keiju ISHITSUKA(keiju / ruby-lang.org)

--

NoMethodError: undefined method `execute' for IRB::ExtendCommand::Help:Module
        from (eval):3:in `irb_help'
        from (eval):9:in `send'
        from (eval):9:in `help'
        from (irb):2
irb(main):003:0> RUBY_VERSION
=> "1.8.6"

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