From: "David A. Black" <dblack@...>
Date: 2008-09-02T18:26:46+09:00
Subject: [ruby-core:18437] Class as second-generation singleton class

Hi --

I'm totally unclear on the rationale for this behavior in 1.9:

   class Object
     def singleton_class
       class << self; self; end
     end
   end

   "".singleton_class.singleton_class   # => Class

I don't see how it makes sense for Class to report itself as the
singleton class of any object, including a singleton class. It's not
likely that this double-depth singleton class would be needed, but I
think it should behave predictably:

   class << obj    # obj's singleton class

and not have a special case wired into it. Maybe I'm missing
something?


David

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