Elastic: Fix duplicate recipient after using Tab key in recipient input (regression)

skins/elastic/ui.js

@@ -2796,7 +2796,7 @@ function rcube_elastic_ui()
      */
     function recipient_input(obj)
     {
-        var list, input, ac_props,
+        var list, input, ac_props, update_lock,
             input_len_update = function() {
                 input.css('width', input.val().length * 10 + 15);
             },
@@ -2839,6 +2839,12 @@ function rcube_elastic_ui()
             update_func = function(text) {
                 var result;
 
+                if (update_lock) {
+                    return;
+                }
+
+                update_lock = true;
+
                 text = (text || input.val()).replace(/[,;\s]+$/, '');
                 result = recipient_input_parser(text);
 
@@ -2847,28 +2853,24 @@ function rcube_elastic_ui()
                 });
 
                 // setTimeout() here is needed for proper input reset on paste event
+                // This is also the reason why we need parse_lock
                 setTimeout(function() {
                         input.val(result.text);
                         apply_func();
                         input_len_update();
+                        update_lock = false;
                     }, 1);
 
                 return result.recipients.length > 0;
             },
             parse_func = function(e) {
-                // On paste the text is not yet in the input we have to use clipboard.
-                // Also because on paste new-line characters are replaced by spaces (#6460)
-                if (e.type == 'paste') {
-                    update_func((e.originalEvent.clipboardData || window.clipboardData).getData('text'));
-                    return;
-                }
-
-                // Note: it can be also executed when autocomplete inserts a recipient
-                update_func();
-
                 if (e.type == 'blur') {
                     list.removeClass('focus');
                 }
+
+                // On paste the text is not yet in the input we have to use clipboard.
+                // Also because on paste new-line characters are replaced by spaces (#6460)
+                update_func(e.type == 'paste' ? (e.originalEvent.clipboardData || window.clipboardData).getData('text') : null);
             },
             keydown_func = function(e) {
                 // On Backspace remove the last recipient