code: func getWidth() int {
  	stdoutFd := int(wrappedstreams.Stdout().Fd())
  	stderrFd := int(wrappedstreams.Stderr().Fd())
  
  	w := getWidthFd(stdoutFd)
  	if w < 0 {
  		w = getWidthFd(stderrFd)
  	}
  
  	return w
  }
docs: // getWidth impl for Unix