gistfile1.rb

module ThinkingSphinx
  class Search
    # rough implementation of what the code actually does.
    CoreMethods = %w( == class class_eval extend frozen? id instance_eval
      instance_of? instance_values instance_variable_defined?
      instance_variable_get instance_variable_set instance_variables is_a?
      kind_of? member? method methods nil? object_id respond_to? send should
      type )
    
    instance_methods.select { |method|
      method.to_s[/^__/].nil? && !CoreMethods.include?(method.to_s)
    }.each { |method|
      undef_method method
    }
    
    def initialize
      @array = []
    end
    
    def method_missing(method, *args, &block)
      # custom checks
      
      array.send(method, *args, &block)
    end
  end
end

Array === ThinkingSphinx::Search.new #=> false
# How can I make this return true, without being a subclass of Array?
# You cannot change the test, because the comparison is being made by Rails, and
# I don't want to hack Rails internals to make this work.