Ignore visibility method, attr definition, module_function within block

[tompng]

We need to ignore these within Module.new do end and any other block because it might be a metaprogramming block.

class A
  def f; end
  X = 1
  anonymous_module = Module.new do
    # These visibility change and attribute defition should be applied to anonymous module, but applied to A
    module_function :f
    private :f
    private_constant :X
    attr_accessor :rw
  end
end

Found while generating document in rails/rails
https://github.com/rails/rails/blob/45ee3bf84f20af55b8619b5dcc22a5e22a4ac0e7/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb#L307

module ColumnMethods
  class_methods do
    private
    def m; end # This is a private method of unknown class/module
  end

  def g; end # This method should be public, but was treated as private and not documented
end

[matzbot]

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