first import

sites/all/modules/i18n/i18n_node/i18n_node.js

@@ -0,0 +1,20 @@
+(function ($) {
+
+/**
+ * Rewrite autocomplete inputs to pass the language of the node currently being
+ * edited in the path.
+ *
+ * This functionality ensures node autocompletes get suggestions for the node's
+ * language rather than the current interface language.
+ */
+Drupal.behaviors.i18n = {
+  attach : function (context) {
+    if (Drupal.settings && Drupal.settings.i18n) {
+      $('form[id^=node-form]', context).find('input.autocomplete[value^=' + Drupal.settings.i18n.interface_path + ']').each(function () {
+        $(this).val($(this).val().replace(Drupal.settings.i18n.interface_path, Drupal.settings.i18n.content_path));
+      });
+    }
+  }
+};
+
+})(jQuery);