preprocessor legend settings problem

My problem started with realizing the preprocess completely ignores the show legend settings being passed and forces it to true but upon further inspection it would seem there are multiple issues with how the preprocess handles legend settings. I'm guessing that ultimately you're wanting to make sure that $options->legend has values set for show and position and that settings passed through $variables['legend'] can override settings passed through $variables['options'] but while checking to see if $variables['legend'] exists it completely ignores anything it passes.

  if (isset($variables['legend']) && $variables['legend']) {
    if (!isset($options->legend)) {
      // Default position bottom
      $options->legend->show = TRUE;
      $options->legend->position = 'bottom';
    }
    else {
      $options->legend->show = TRUE;
      if (!isset($options->legend->position)) {
        $options->legend->position = 'bottom';
      }
    }
  }

I'm guessing what should happen here is something like this.

  if(!isset($options->legend)) {
    $options->legend = new stdClass();
    $options->legend->show = TRUE;
    $options->legend->position = 'bottom';
  }
  else {
    if(!isset($options->legend->show)) {
      $options->legend->show = TRUE;
    }
    if(!isset($options->legend->position)) {
      $options->legend->position = 'bottom';
    }
  }

  if (isset($variables['legend']) && $variables['legend']) {
    if(isset($variables['legend']->show)) {
      $options->legend->show = $variables['legend']->show;
    }

    if (!isset($options->legend->position)) {
      $options->legend->position = $variables['legend']->position;
    }
  }

It ensures that $options->legend exists and has show and legend property values then checks to see if $variables['legend'] exists and if so overwrites show and/or position if provided. If this is the intention of this section of code I can provide a patch.