k.patch

diff --git a/lib/Kronolith.php b/lib/Kronolith.php
index ba97a29b..d25e0894 100644
--- a/lib/Kronolith.php
+++ b/lib/Kronolith.php
@@ -2132,6 +2132,7 @@ class Kronolith
             foreach ($group_users as $user) {
                 if (empty($recipients[$user])) {
                     $recipients[$user] = self::_notificationPref($user, 'read', $calendar);
+                    $recipients[$user]['private'] = $event->isPrivate($user);
                 }
             }
         }
@@ -2146,13 +2147,13 @@ class Kronolith
             if (strpos($email, '@') === false) {
                 continue;
             }
-            if (!isset($addresses[$vals['lang']][$vals['tf']][$vals['df']])) {
-                $addresses[$vals['lang']][$vals['tf']][$vals['df']] = array();
+            if (!isset($addresses[$vals['lang']][$vals['tf']][$vals['df']][$vals['private']])) {
+                $addresses[$vals['lang']][$vals['tf']][$vals['df']][$vals['private']] = array();
             }
 
             $tmp = new Horde_Mail_Rfc822_Address($email);
             $tmp->personal = $identity->getValue('fullname');
-            $addresses[$vals['lang']][$vals['tf']][$vals['df']][] = strval($tmp);
+            $addresses[$vals['lang']][$vals['tf']][$vals['df']][$vals['private']][] = strval($tmp);
         }
 
         if (!$addresses) {
@@ -2180,23 +2181,26 @@ class Kronolith
             }
 
             foreach ($twentyFour as $tf => $dateFormat) {
-                foreach ($dateFormat as $df => $df_recipients) {
-                    $message = "\n"
-                        . sprintf($notification_message,
-                                  $event->title,
-                                  Kronolith::getLabel($share),
-                                  $event->start->strftime($df),
-                                  $event->start->strftime($tf ? '%R' : '%I:%M%p'))
-                        . "\n\n" . $event->description;
-
-                    $mime_mail = new Horde_Mime_Mail(array(
-                        'Subject' => $subject . ' ' . $event->title,
-                        'To' => implode(',', $df_recipients),
-                        'From' => $senderIdentity->getDefaultFromAddress(true),
-                        'User-Agent' => 'Kronolith ' . $registry->getVersion(),
-                        'body' => $message));
-                    Horde::log(sprintf('Sending event notifications for %s to %s', $event->title, implode(', ', $df_recipients)), 'DEBUG');
-                    $mime_mail->send($injector->getInstance('Horde_Mail'));
+                foreach ($dateFormat as $df => $recipients) {
+                    foreach ($recipients as $is_private => $df_recipients) {
+                        $event_title = $is_private ? _("busy") : $event->title;
+                        $message = "\n"
+                            . sprintf($notification_message,
+                                      $event_title,
+                                      Kronolith::getLabel($share),
+                                      $event->start->strftime($df),
+                                      $event->start->strftime($tf ? '%R' : '%I:%M%p'))
+                            . "\n\n" . ($is_private ? "" : $event->description);
+
+                        $mime_mail = new Horde_Mime_Mail(array(
+                            'Subject' => $subject . ' ' . $event_title,
+                            'To' => implode(',', $dc_recipients),
+                            'From' => $senderIdentity->getDefaultFromAddress(true),
+                            'User-Agent' => 'Kronolith ' . $registry->getVersion(),
+                            'body' => $message));
+                        Horde::log(sprintf('Sending event notifications for %s to %s', $event_title, implode(', ', $df_recipients)), 'DEBUG');
+                        $mime_mail->send($injector->getInstance('Horde_Mail'));
+                    }
                 }
             }
         }