Issue #8284 has been reported by jacknagel (Jack Nagel).

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Bug #8284: Expected behavior of Module#public_class_method
https://bugs.ruby-lang.org/issues/8284

Author: jacknagel (Jack Nagel)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 2.0.0p0 (2013-02-24 revision 39474) [i386-darwin10.8.0]


It was pointed out by Myron Marston (here: https://gist.github.com/myronmarston/5401829) that calling public_class_method on an anonymous module makes the named method public on Object, etc.

Object.define_method => NoMethodError
Module.new.public_class_method(:define_method)
Object.define_method => ArgumentError

Also of note, the same is not true when calling it on a class:

Object.define_method => NoMethodError
Class.new.public_class_method(:define_method)
Object.define_method => NoMethodError

which seems inconsistent given:

Module.new.singleton_class.ancestors => [Module, Object, Kernel, BasicObject]
Class.new.singleton_class.ancestors    => [Class, Module, Object, Kernel, BasicObject]


Is this a bug or expected behavior? If the latter, what is the correct explanation?


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