Similar By Term views filter options are not being saved

The similar by term views integration filters has some options. E.g. you can limit the vocabularies with which matches are made.

Currently, if you select a vocabulary in the filter and save the filter, the option is not saved. This is due to some errors in the way the options form is created.

This is the fix. A patch file is attached to this ticket also.

diff --git a/views/similarterms_handler_argument_node_nid.inc b/views/similarterms_handler_argument_node_nid.inc
index 2c1da8f..d525369 100755
--- a/views/similarterms_handler_argument_node_nid.inc
+++ b/views/similarterms_handler_argument_node_nid.inc
@@ -51,19 +51,21 @@ class similarterms_handler_argument_node_nid extends views_handler_argument_nume
       '#title' => t('Similarity by Terms'),
       '#collapsible' => FALSE,
     );
-    $form['similarterms']['vocabularies'] = array(
+    $form['vocabularies'] = array(
       '#type' => 'checkboxes',
       '#title' => t('Limit similarity to terms within these vocabularies'),
       '#description' => t('Choosing any vocabularies here will limit the terms used to calculate similarity. It is usually best NOT to limit the terms, but in some cases this is necessary. Leave all checkboxes unselected to not limit terms.'),
       '#options' => $vocabularies,
       '#default_value' => empty($this->options['vocabularies']) ? array() : $this->options['vocabularies'],
+      '#fieldset' => 'similarterms'
     );
 
-    $form['similarterms']['include_args'] = array(
+    $form['include_args'] = array(
       '#type' => 'checkbox',
       '#title' => t('Include argument node(s) in results'),
       '#description' => t('If selected, the node(s) passed as the argument will be included in the view results.'),
       '#default_value' => !empty($this->options['include_args']),
+      '#fieldset' => 'similarterms'
     );
 
   }