class Rake::Application

def select_trace_output(options, trace_option, value) # :nodoc:
  value = value.strip unless value.nil?
  case value
  when "stdout"
    options.trace_output = $stdout
  when "stderr", nil
    options.trace_output = $stderr
  else
    fail CommandLineOptionError,
      "Unrecognized --#{trace_option} option '#{value}'"
  end
end