class Rake::Task

def invoke_prerequisites(task_args, invocation_chain) # :nodoc:
  if application.options.always_multitask
    invoke_prerequisites_concurrently(task_args, invocation_chain)
  else
    prerequisite_tasks.each { |prereq|
      prereq_args = task_args.new_scope(prereq.arg_names)
      prereq.invoke_with_call_chain(prereq_args, invocation_chain)
    }
  end
end