Backport changes from r5084 to r5090 to release branch

2 files changed, 32 insertions, 16 deletions

diff --git a/program/include/main.inc b/program/include/main.inc
index a3edbf7ca..82d3eb7e9 100644
--- a/program/include/main.inc
+++ b/program/include/main.inc
@@ -1407,21 +1407,21 @@ function rcmail_render_folder_tree_select(&$arrFolders, &$mbox_name, $maxlength,
   $out = '';
 
   foreach ($arrFolders as $key => $folder) {
-    if (!empty($exceptions) && in_array($folder['id'], $exceptions)) {
-      continue;
-    }
-
-    if (!$realnames && ($folder_class = rcmail_folder_classname($folder['id'])))
-      $foldername = rcube_label($folder_class);
-    else {
-      $foldername = $folder['name'];
+    if (empty($exceptions) || !in_array($folder['id'], $exceptions)) {
+      if (!$realnames && ($folder_class = rcmail_folder_classname($folder['id'])))
+        $foldername = rcube_label($folder_class);
+      else {
+        $foldername = $folder['name'];
+
+        // shorten the folder name to a given length
+        if ($maxlength && $maxlength>1)
+          $foldername = abbreviate_string($foldername, $maxlength);
+      }
 
-      // shorten the folder name to a given length
-      if ($maxlength && $maxlength>1)
-        $foldername = abbreviate_string($foldername, $maxlength);
+      $select->add(str_repeat(' ', $nestLevel*4) . $foldername, $folder['id']);
     }
-
-    $select->add(str_repeat(' ', $nestLevel*4) . $foldername, $folder['id']);
+    else if ($nestLevel)
+      continue;
 
     if (!empty($folder['folders']))
       $out .= rcmail_render_folder_tree_select($folder['folders'], $mbox_name, $maxlength,
diff --git a/program/include/rcube_imap.php b/program/include/rcube_imap.php
index e31fb887e..0e28b083a 100644
--- a/program/include/rcube_imap.php
+++ b/program/include/rcube_imap.php
@@ -3083,20 +3083,36 @@ class rcube_imap
                 $a_folders = $this->conn->listMailboxes($root, $name,
                     NULL, array('SUBSCRIBED'));
 
-                // remove non-existent folders
-                if (is_array($a_folders)) {
+                // unsubscribe non-existent folders, remove from the list
+                if (is_array($a_folders) && $name == '*') {
                     foreach ($a_folders as $idx => $folder) {
                         if ($this->conn->data['LIST'] && ($opts = $this->conn->data['LIST'][$folder])
                             && in_array('\\NonExistent', $opts)
                         ) {
+                            $this->conn->unsubscribe($folder);
                             unset($a_folders[$idx]);
-                        } 
+                        }
                     }
                 }
             }
             // retrieve list of folders from IMAP server using LSUB
             else {
                 $a_folders = $this->conn->listSubscribed($root, $name);
+
+                // unsubscribe non-existent folders, remove from the list
+                if (is_array($a_folders) && $name == '*') {
+                    foreach ($a_folders as $idx => $folder) {
+                        if ($this->conn->data['LIST'] && ($opts = $this->conn->data['LIST'][$folder])
+                            && in_array('\\Noselect', $opts)
+                        ) {
+                            // Some servers returns \Noselect for existing folders
+                            if (!$this->mailbox_exists($folder)) {
+                                $this->conn->unsubscribe($folder);
+                                unset($a_folders[$idx]);
+                            }
+                        }
+                    }
+                }
             }
         }