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class Module
def focus *wanteds
wanteds.map! { |m| m.to_s }
unwanteds = public_instance_methods(false).grep(/test_/).map(&:to_s)
unwanteds -= wanteds
unwanteds.each do |unwanted|
remove_method unwanted
end
end
def focus_re regexp
focus(*public_instance_methods.grep(regexp))
end
def blur
parent = self.superclass
ObjectSpace.each_object Class do |klass|
next unless parent > klass
next if klass == self
klass.send :focus
klass.send :undef_method, :default_test
end
end
end