views_handler_argument_civicrm_year_month.inc not working with contextual filters

The file views_handler_argument_civicrm_year_month.inc incorrectly uses the Drupal format_date function and does not check the parameters for this function as well.

I've replaced the logic in both the "summary_name()" and the "title()" function to handle the format_date properly:

/**

• Provide a link to the next level of the view
  */
  function summary_name($data) {
  $timestamp = strtotime($data->{$this->name_alias});
  if ($timestamp !== FALSE) { return format_date(strtotime($this->argument), 'custom', $this->format); }
  }
  
  /**
  * Provide a link to the next level of the view
  */
  function title() {
  $timestamp = strtotime($this->argument);
  if ($timestamp !== FALSE) { return format_date(strtotime($this->argument), 'custom', $this->format); }

  }