From: gga <GGarramuno@...>
Date: 2005-07-18T07:00:54+09:00
Subject: alias of some methods does not work

irb(main):006:0> module Kernel
irb(main):007:1>   alias :_methods :methods
irb(main):008:1> end

is all OK.

Yet:
irb(main):001:0> module Kernel
irb(main):002:1>  alias :_instance_methods :instance_methods
irb(main):003:1> end
NameError: undefined method `instance_methods' for module `Kernel'
        from (irb):2
        from :0
irb(main):004:0> Kernel.instance_methods
=> ["freeze", "__id__", "singleton_methods", ...]

Is this by design or a bug?  Why can't I alias any of the following:
  # alias :_constants :constants
  # alias :_instance_methods :instance_methods
  # alias :_public_instance_methods :public_instance_methods
  # alias :_protected_instance_methods :protected_instance_methods
  # alias :_private_instance_methods :private_instance_methods
?

Reason I want to alias them is so that I can add some function into my
..irbrc so that those arrays get returned in sorted order automatically.