216         $namespace = $INPUT->str('namespace', '');
246 …$this->debugLog("Calendar saveEvent: INPUT namespace='$namespace', eventId='$eventId', date='$date…
290         if ($namespace && !preg_match('/^[a-zA-Z0-9_:;*-]*$/', $namespace)) {
334             $this->debugLog("Calendar saveEvent: NEW event, received namespace='$namespace'");
336 …if (!empty($namespace) && (strpos($namespace, '*') !== false || strpos($namespace, ';') !== false)…
338                 $namespace = '';
340                 $this->debugLog("Calendar saveEvent: Namespace is clean, keeping as '$namespace'");
343 …this->debugLog("Calendar saveEvent: EDITING event $eventId, user selected namespace='$namespace'");
354 …xistingEventData = $this->getExistingEventData($eventId, $searchDate, $oldNamespace ?? $namespace);
377                 $receivedNamespace = $namespace;
378 … if (empty($namespace) || strpos($namespace, '*') !== false || strpos($namespace, ';') !== false) {
380                         $namespace = $existingEventData['namespace'];
381 …$this->debugLog("Calendar saveEvent recurring: Preserving namespace '$namespace' (received='$recei…
386 …$this->debugLog("Calendar saveEvent recurring: Using new namespace '$namespace' (received='$receiv…
389 …is->debugLog("Calendar saveEvent recurring: No existing data found, using namespace='$namespace'");
392 …  $this->createRecurringEvents($namespace, $date, $endDate, $title, $time, $endTime, $description, 
403         if ($namespace) {
404             $dataDir .= str_replace(':', '/', $namespace) . '/';
426         $namespaceChanged = ($eventId && $oldNamespace !== null && $oldNamespace !== $namespace);
429 …', oldNamespace=" . var_export($oldNamespace, true) . ", newNamespace='$namespace', namespaceChang…
493             'namespace' => $namespace, // Store namespace with event
498 …$this->debugLog("Calendar saveEvent: Saving event '$title' with namespace='$namespace' to file $ev…
591             $audit->logMove($namespace, $oldDate ?: $date, $date, $generatedId, $title);
594             $audit->logUpdate($namespace, $date, $generatedId, $title);
597             $audit->logCreate($namespace, $date, $generatedId, $title);
606         $namespace = $INPUT->str('namespace', '');
611         $storedNamespace = $this->findEventNamespace($eventId, $date, $namespace);
619         $namespace = $storedNamespace;
624         if ($namespace) {
625             $dataDir .= str_replace(':', '/', $namespace) . '/';
663             $this->deleteAllRecurringInstances($recurringId, $namespace, $dataDir);
706         $audit->logDelete($namespace, $date, $eventId, $eventTitle);
714         $namespace = $INPUT->str('namespace', '');
719         $storedNamespace = $this->findEventNamespace($eventId, $date, $namespace);
727         $namespace = $storedNamespace;
732         if ($namespace) {
733             $dataDir .= str_replace(':', '/', $namespace) . '/';
746                         $event['namespace'] = $namespace;
765         $namespace = $INPUT->str('namespace', '');
780         if ($namespace && !preg_match('/^[a-zA-Z0-9_:;*-]*$/', $namespace)) {
786         $this->debugLog("Requested: year=$year, month=$month, namespace='$namespace'");
789 …$isMultiNamespace = !empty($namespace) && (strpos($namespace, ';') !== false || strpos($namespace,…
794             $events = $this->loadEventsMultiNamespace($namespace, $year, $month);
796             $events = $this->loadEventsSingleNamespace($namespace, $year, $month);
818         $namespace = $INPUT->str('namespace', '');
841             'namespace' => $namespace,
857     private function loadEventsSingleNamespace($namespace, $year, $month) {  argument
859         if ($namespace) {
860             $dataDir .= str_replace(':', '/', $namespace) . '/';
953                 $namespace = $baseNamespace ? $baseNamespace . ':' . $item : $item;
956                 $events = $this->loadEventsSingleNamespace($namespace, $year, $month);
962                         $event['_namespace'] = $namespace;
968                 $this->findSubNamespaces($path . '/', $namespace, $year, $month, $allEvents);
980         $namespace = $INPUT->str('namespace', '');
1117                 $namespace = str_replace('/', ':', $relPath);
1118                 $callback($calDir, $namespace);
1129         $namespace = $INPUT->str('namespace', '');
1135         $storedNamespace = $this->findEventNamespace($eventId, $date, $namespace);
1143         $namespace = $storedNamespace;
1148         if ($namespace) {
1149             $dataDir .= str_replace(':', '/', $namespace) . '/';
1172                 $audit->logTaskToggle($namespace, $date, $eventId, $eventTitle, $completed);
1323         $namespace = $INPUT->str('namespace', '');
1328         $result = $sync->importEvents($namespace, $startDate ?: null, $endDate ?: null);
1344         $namespace = $INPUT->str('namespace', '');
1349         $result = $sync->exportEvents($namespace, $startDate ?: null, $endDate ?: null);
1369 …  private function createRecurringEvents($namespace, $startDate, $endDate, $title, $time, $endTime,  argument
1374         if ($namespace) {
1375             $dataDir .= str_replace(':', '/', $namespace) . '/';
1525                     'namespace' => $namespace,
1682                 $namespace = $baseNamespace ? $baseNamespace . ':' . $item : $item;
1683                 $namespaces[] = $namespace;
1684                 $this->scanForNamespaces($path . '/', $namespace, $namespaces);
1692     private function deleteAllRecurringInstances($recurringId, $namespace, $dataDir) {  argument
1731     private function getExistingEventData($eventId, $date, $namespace) {  argument
1735         if ($namespace) {
1736             $dataDir .= str_replace(':', '/', $namespace) . '/';