Ingo_Script_Procmail_Recipe::addFlag PHP Method

    public function addFlag($flag)
    {
        $this->_flags .= $flag;
    }

 /**
  * Generates the procmail script to handle mail forwards.
  *
  * @param Ingo_Rule $rule  Rule object.
  */
 protected function _generateForward(Ingo_Rule $rule)
 {
     if (!count($rule)) {
         return;
     }
     $this->_addItem(Ingo::RULE_FORWARD, new Ingo_Script_Procmail_Comment(_("Forwards"), $rule->disable, true));
     $recipe = new Ingo_Script_Procmail_Recipe(array('action' => 'Ingo_Rule_System_Forward', 'action-value' => $rule->addresses, 'disable' => $rule->disable), $this->_params);
     if ($rule->keep) {
         $recipe->addFlag('c');
     }
     $this->_addItem(Ingo::RULE_FORWARD, $recipe);
 }