message: now scale <id> auto
diff: @@ -110,7 +110,10 @@ function guessParams() {
  return { min: scaleArg, max: optionalScaleArg }
  } else if (Number.isInteger(scaleArg) && optionalScaleArg === 'auto') {
  return { min: scaleArg, max: 'auto' }
  - } else if (!scaleArg && !optionalScaleArg) {
  + } else if (
  + (!scaleArg && !optionalScaleArg) ||
  + (scaleArg === 'auto' && !optionalScaleArg)
  + ) {
  return { min: 1, max: 'auto' }
  }
  help()
  