From: cichol@...
Date: 2015-12-16T14:18:30+00:00
Subject: [ruby-core:72186] [Ruby trunk - Bug #11826] [Open] In 'prepended', 'class_eval' rewriting a method take no effect

Issue #11826 has been reported by cichol tsai.

----------------------------------------
Bug #11826: In 'prepended', 'class_eval' rewriting a method take no effect
https://bugs.ruby-lang.org/issues/11826

* Author: cichol tsai
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: 
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
~~~
module M
  def self.prepended(clz)
    clz.class_eval do
      def [](k)
        p 1
      end
    end
  end
end

module N
  def self.included(clz)
    clz.class_eval do 
      def []=(k, v)
        p 2
      end
    end
  end
end

class Hash
  prepend M
  include N
end

Hash.new[1]
Hash.new[1]=1
~~~

Running this example gives no output, which is expected to be '1 2'.
I am using 'ruby 2.2.2p95 (2015-04-13 revision 50295) [x64-mingw32]'.
Thanks in advanced.



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