+
+ /** Check whether this issue is empty
+ * An issue is empty if the email has no title (or the default one), or no articles and an empty head.
+ */
+ public function isEmpty()
+ {
+ return $this->title_mail == '' || $this->title_mail == 'to be continued' || (count($this->arts) == 0 && strlen($this->head) == 0);
+ }
+