// It would be too much of a performance hit to let every module have
        // a generic preprocess function; themes and theme engines can do that.
        if ($type != 'module' && function_exists($prefix .'_preprocess')) {
          $info['preprocess functions'][] = $prefix .'_preprocess';
        }
        if (function_exists($prefix .'_preprocess_'. $hook)) {
          $info['preprocess functions'][] = $prefix .'_preprocess_'. $hook;
        }