- Fix handling of other users namespace roots

program/include/rcube_imap.php

@@ -3508,12 +3508,25 @@ class rcube_imap
                     foreach ($ns as $item) {
                         if ($item[0] === $mbox) {
                             $options['is_root'] = true;
-                            break;
+                            break 2;
                         }
                     }
                 }
             }
         }
+        // check if the folder is other user virtual-root
+        if (!$options['is_root'] && !empty($namespace) && !empty($namespace['other'])) {
+            $parts = explode($this->delimiter, $mailbox);
+            if (count($parts) == 2) {
+                $mbox = $parts[0] . $this->delimiter;
+                foreach ($namespace['other'] as $item) {
+                    if ($item[0] === $mbox) {
+                        $options['is_root'] = true;
+                        break;
+                    }
+                }
+            }
+        }
 
         $options['name']      = $mailbox;
         $options['options']   = $this->mailbox_options($mailbox, true);

program/steps/settings/edit_folder.inc

@@ -79,7 +79,7 @@ function rcmail_folder_form($attrib)
 
     // Location (name)
     if ($options['protected']) {
-        $foldername = Q(rcmail_localize_foldername($mbox_imap));
+        $foldername = Q(str_replace($delimiter, ' » ', rcmail_localize_folderpath($mbox_imap)));
     }
     else if ($options['norename']) {
         $foldername = Q($folder);

program/steps/settings/folders.inc

@@ -280,11 +280,24 @@ function rcube_subscription_form($attrib)
                 foreach ($ns as $item) {
                     if ($item[0] === $fname) {
                         $disabled = true;
-                        break;
+                        break 2;
                     }
                 }
             }
         }
+        // check if the folder is an other users virtual-root folder, then disable subscription option on it
+        if (!$disabled && $folder['virtual'] && $folder['level'] == 1
+            && !empty($namespace) && !empty($namespace['other'])
+        ) {
+            $parts = explode($delimiter, $folder['id']);
+            $fname = $parts[0] . $delimiter;
+            foreach ($namespace['other'] as $item) {
+                if ($item[0] === $fname) {
+                    $disabled = true;
+                    break;
+                }
+            }
+        }
 
         $table->add_row(array('id' => 'rcmrow'.$idx, 'class' => join(' ', $classes),
             'foldername' => $folder['id']));