3 files changed, 23 insertions, 2 deletions
diff --git a/program/steps/mail/autocomplete.inc b/program/steps/mail/autocomplete.inc
index 8ccfaaa6f..e40bb76c3 100644
--- a/program/steps/mail/autocomplete.inc
+++ b/program/steps/mail/autocomplete.inc
@@ -40,8 +40,9 @@ if ($RCMAIL->action == 'group-expand') {
 }
 
 
-$MAXNUM = (int)$RCMAIL->config->get('autocomplete_max', 15);
+$MAXNUM = (int) $RCMAIL->config->get('autocomplete_max', 15);
 $mode   = (int) $RCMAIL->config->get('addressbook_search_mode');
+$single = (bool) $RCMAIL->config->get('autocomplete_single');
 $search = get_input_value('_search', RCUBE_INPUT_GPC, true);
 $source = get_input_value('_source', RCUBE_INPUT_GPC);
 $sid    = get_input_value('_id', RCUBE_INPUT_GPC);
@@ -66,19 +67,28 @@ if (!empty($book_types) && strlen($search)) {
         $email_arr = (array)$abook->get_col_values('email', $sql_arr, true);
         $email_cnt = count($email_arr);
         foreach ($email_arr as $email) {
-          if (empty($email))
+          if (empty($email)) {
             continue;
+          }
+
           $contact = format_email_recipient($email, $sql_arr['name']);
+
           // skip entries that don't match
           if ($email_cnt > 1 && strpos(mb_strtolower($contact), $search_lc) === false) {
             continue;
           }
+
           // skip duplicates
           if (!in_array($contact, $contacts)) {
             $contacts[] = $contact;
             if (count($contacts) >= $MAXNUM)
               break 2;
           }
+
+          // skip redundant entries (show only first email address)
+          if ($single) {
+            break;
+          }
         }
       }
     }
diff --git a/program/steps/settings/func.inc b/program/steps/settings/func.inc
index bb144d4cb..6ba524724 100644
--- a/program/steps/settings/func.inc
+++ b/program/steps/settings/func.inc
@@ -659,6 +659,16 @@ function rcmail_user_prefs($current=null)
       );
     }
 
+    if (!isset($no_override['autocomplete_single'])) {
+      $field_id = 'rcmfd_autocomplete_single';
+      $checkbox = new html_checkbox(array('name' => '_autocomplete_single', 'id' => $field_id, 'value' => 1));
+
+      $blocks['main']['options']['autocomplete_single'] = array(
+        'title' => html::label($field_id, Q(rcube_label('autocompletesingle'))),
+        'content' => $checkbox->show($config['autocomplete_single']?1:0),
+      );
+    }
+
     break;
 
     // Special IMAP folders
diff --git a/program/steps/settings/save_prefs.inc b/program/steps/settings/save_prefs.inc
index a32f5948c..d917e1157 100644
--- a/program/steps/settings/save_prefs.inc
+++ b/program/steps/settings/save_prefs.inc
@@ -93,6 +93,7 @@ switch ($CURR_SECTION)
   case 'addressbook':
     $a_user_prefs = array(
       'default_addressbook' => get_input_value('_default_addressbook', RCUBE_INPUT_POST, true),
+      'autocomplete_single' => isset($_POST['_autocomplete_single']) ? TRUE : FALSE,
     );
 
   break;