Drupal 7 - taxonomy_revision 1.4 - Show revisions block when creating a new term to allow adding initial log message.

drupal_7_taxonomy_revision_1_4_show_revisions_on_term_creation.patch

diff --git a/taxonomy_revision.module b/taxonomy_revision.module
index ea72297..a796522 100644
--- a/taxonomy_revision.module
+++ b/taxonomy_revision.module
@@ -237,41 +237,55 @@ function taxonomy_revision_entity_info_alter(&$entity_info) {
  * Implements hook_field_attach_form().
  */
 function taxonomy_revision_field_attach_form($entity_type, $entity, &$form, &$form_state, $langcode) {
-  if ($entity_type == 'taxonomy_term' && !empty($entity->tid)) {
-    $form['revision_information'] = array(
-      '#type' => 'fieldset',
-      '#title' => t('Revision information'),
-      '#collapsible' => TRUE,
-      '#weight' => 20,
-      '#access' => user_access('choose taxonomy term revisions'),
-    );
-    if (!_taxonomy_revision_enabled_by_default($entity->vid)) {
-      $form['revision_information']['revision'] = array(
-        '#type' => 'checkbox',
-        '#title' => t('Create new revision'),
-      );
+  if ($entity_type == 'taxonomy_term') {
+    // Get the vocabulary id from the entity if defined.
+    if (!empty($entity->vid)) {
+      $vocabulary_id = $entity->vid;
     }
-    else {
-      $form['revision_information']['revision'] = array(
-        '#type' => 'markup',
-        '#markup' => t('New revision will be created automatically.'),
-      );
+    // Otherwise load the vocabulary if the machine name is present.
+    elseif (isset($entity->vocabulary_machine_name)) {
+      $vocabulary = taxonomy_vocabulary_machine_name_load($entity->vocabulary_machine_name);
+      if (!empty($vocabulary->vid)) {
+        $vocabulary_id = $vocabulary->vid;
+      }
     }
-    $form['revision_information']['log'] = array(
-      '#type' => 'textarea',
-      '#title' => t('Revision log message'),
-      '#rows' => 4,
-      '#description' => t('Provide an explanation of the changes you are making. This will help other authors understand your motivations.'),
-    );
-    if (!_taxonomy_revision_enabled_by_default($entity->vid)) {
-      $form['revision_information']['log']['#states'] = array(
-        'invisible' => array(
-          'input[name="revision"]' => array('checked' => FALSE),
-        ),
+    // Add the revision information to the form.
+    if (isset($vocabulary_id)) {
+      $form['revision_information'] = array(
+        '#type' => 'fieldset',
+        '#title' => t('Revision information'),
+        '#collapsible' => TRUE,
+        '#weight' => 20,
+        '#access' => user_access('administer taxonomy'),
       );
-    }
+      if (!_taxonomy_revision_enabled_by_default($vocabulary_id)) {
+        $form['revision_information']['revision'] = array(
+          '#type' => 'checkbox',
+          '#title' => t('Create new revision'),
+        );
+      }
+      else {
+        $form['revision_information']['revision'] = array(
+          '#type' => 'markup',
+          '#markup' => t('New revision will be created automatically.'),
+        );
+      }
+      $form['revision_information']['log'] = array(
+        '#type' => 'textarea',
+        '#title' => t('Revision log message'),
+        '#rows' => 4,
+        '#description' => t('Provide an explanation of the changes you are making. This will help other authors understand your motivations.'),
+      );
+      if (!_taxonomy_revision_enabled_by_default($vocabulary_id)) {
+        $form['revision_information']['log']['#states'] = array(
+          'invisible' => array(
+            'input[name="revision"]' => array('checked' => FALSE),
+          ),
+        );
+      }
 
-    $form['#entity_builders'][] = 'taxonomy_revision_taxonomy_form_term_submit_build_term';
+      $form['#entity_builders'][] = 'taxonomy_revision_taxonomy_form_term_submit_build_term';
+    }
   }
 }