Block configuration not saved

Hi,

I'm using this module with some facets (links with checkbox, slider, ...).

The patch for the issue Collapse facet from Facet API and Search API works well.

But, in the block configuration, the option selected isn't saved.

The problem comes from the function collapsiblock_submit($form, &$form_state).
This function transforms and saves a part of the block id in lowercase.
So, I changed the function collapsiblock_form_alter(&$form, $form_state, $form_id) to do the same think and it's working

In the function collapsiblock_form_alter(&$form, $form_state, $form_id), I did this :

function collapsiblock_form_alter(&$form, $form_state, $form_id) {
  [...]
  if ($form_id == 'block_admin_configure') {
    $settings = variable_get('collapsiblock_settings', array());
    $form['#submit'][] = 'collapsiblock_submit';
    $form['collapsiblock'] = array(
      '#type' => 'fieldset',
      '#title' => t('Collapsible'),
      '#collapsible' => TRUE,
      '#weight' => -5
    );

+    $block_id = 'block-' . str_replace('_', '-', $form['module']['#value']) . '-' . drupal_strtolower(str_replace('_', '-', $form['delta']['#value']));
+    if (isset($settings[$block_id])) {
+      $default_value = $settings[$block_id] ? $settings[$block_id] : variable_get('collapsiblock_default_state', 1);
-    if (isset($settings['block-' . str_replace('_', '-', $form['module']['#value']) . '-' . str_replace('_', '-', $form['delta']['#value'])])) {
-      $default_value = $settings['block-' . str_replace('_', '-', $form['module']['#value']) . '-' . str_replace('_', '-', $form['delta']['#value'])] ? $settings['block-' . str_replace('_', '-', $form['module']['#value']) . '-' . str_replace('_', '-', $form['delta']['#value'])] : variable_get('collapsiblock_default_state', 1);
    } else {
      $default_value = 1;
    }
    $form['collapsiblock']['collapse_type'] = array(
      '#type' => 'radios',
      '#title' => t('Block collapse behavior'),
      '#options' => array(1 => t('None.'), 2 => t('Collapsible, expanded by default.'), 3 => t('Collapsible, collapsed by default.'), 4 => t('Collapsible, collapsed all the time.')),
      '#default_value' => $default_value,
    );
  }
}