From: Lazaridis Ilias <ilias@...>
Date: 2011-07-13T00:47:41+09:00
Subject: [ruby-core:38029] [Ruby 1.9 - Feature #3688] redef keyword for method redefinition in Ruby 2.0


Issue #3688 has been updated by Lazaridis Ilias.


=begin

See related issue #5005 with a suggested implementation of "original"

=end

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Feature #3688: redef keyword for method redefinition in Ruby 2.0
http://redmine.ruby-lang.org/issues/3688

Author: Suraj Kurapati
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 2.0


=begin
 Hello,
 
 I saw Matz's Euroko 2010 keynote[1] where he mentioned adding the
 ability to redefine methods gracefully in Ruby 2.0.  I mean, more
 gracefully than this:
 
   class Hash
     # save the original method
     alias __original_initialize__ initialize
 
     # redefine the method
     def initialize(*args, &block)
       # do something extra ...
 
       # call the original method
       __original_initialize__(*args, &block)
 
       # do something more ...
     end
   end
 
 I suggest adding a "redef" keyword to Ruby 2.0 for this purpose:
 
   class Hash
     # redefine the method
     redef initialize(*args, &block)
       # do something extra ...
 
       # call the original method
       super
 
       # do something more ...
     end
   end
 
 The "redef" keyword should also have a twin "redefine_method" 
 method for use in block-based metaprogramming:
 
   class Hash
     # redefine the method
     redefine_method :initialize do |*args, &block|
       # do something extra ...
 
       # call the original method
       super
 
       # do something more ...
     end
   end
 
 Thanks for your consideration.
 
 [1]: http://euruko2010.heroku.com/Matz-
=end



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