Issue #9452 has been reported by Jan Lelis.

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Bug #9452: Refining methods that should be private
https://bugs.ruby-lang.org/issues/9452

* Author: Jan Lelis
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: ruby 2.2.0dev (2014-01-25 trunk 44707) [x86_64-linux]
* Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN
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Are refinements also meant to add private methods? This is what I tried:

    module R
      refine Object do
        def m
          puts "Success!"
        end

        private(:m)
      end
    end

    using R

    m # success
    42.m # success (= not private)


However, I can get near the desired functionality by defining a private method first:

    class Object
      private
      def m
      end
    end

    module R
      refine Object do
        def m
          puts "Success!"
        end
      end
    end

    using R
    m # success
    42.m # no success (= it is private)

It calls the right code. But requires global core ext.



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