--- comment.module.old	2009-01-11 18:20:10.000000000 -0500
+++ comment.module	2009-01-11 19:09:44.000000000 -0500
@@ -135,6 +135,9 @@
       'template' => 'comment-folded',
       'arguments' => array('comment' => NULL),
     ),
+    'comment_list' => array(
+      'arguments' => array('comments' => NULL, 'mode' => NULL),
+    ),   
     'comment_flat_collapsed' => array(
       'arguments' => array('comment' => NULL, 'node' => NULL),
     ),
@@ -922,6 +925,9 @@
 function comment_links($comment, $return = 1) {
   global $user;
   $links = array();
+  if ($comment->cid==-1) {
+    return $links;
+  }
 
   // If viewing just this comment, link back to the node.
   if ($return) {
@@ -976,6 +982,66 @@
 }
 
 /**
+ * Theme comment list threaded list.
+ *
+ * @param $comments
+ *   An  array containing comments.
+ * @param $node
+ *   The node which comment(s) needs rendering.
+ * @ingroup themeable
+ */
+function theme_comment_list($comments, $node) {
+
+  $mode = _comment_get_display_setting('mode', $node);
+  $divs = 0;
+  $num_rows = FALSE;
+  $depth0 = FALSE;
+  $output = '';
+  drupal_add_css(drupal_get_path('module', 'comment') .'/comment.css');
+
+  foreach($comments as $comment) {
+    // add divs for threaded mode
+    if ($mode == COMMENT_MODE_THREADED_COLLAPSED || $mode == COMMENT_MODE_THREADED_EXPANDED) {
+
+      if ($comment->depth > $divs) {
+        $divs++;
+        $output .= '<div class="indented depth-' . $comment->depth . '">';
+      }
+      else {
+        while ($comment->depth < $divs) {
+          $divs--;
+          $output .= '</div>';
+        }
+      }
+      
+      // add enclosing div for first level
+      if ($comment->depth == 0) {
+        if($depth0) $output .= '</div>';
+        $output .= '<div class="depth-0">';
+        $depth0 = TRUE; 
+      }
+    }
+    if ($mode == COMMENT_MODE_FLAT_COLLAPSED) {
+      $output .= theme('comment_flat_collapsed', $comment, $node);
+    }
+    else if ($mode == COMMENT_MODE_FLAT_EXPANDED) {
+      $output .= theme('comment_flat_expanded', $comment, $node);
+    }
+    else if ($mode == COMMENT_MODE_THREADED_COLLAPSED) {
+      $output .= theme('comment_thread_collapsed', $comment, $node);
+    }
+    else if ($mode == COMMENT_MODE_THREADED_EXPANDED) {
+      $output .= theme('comment_thread_expanded', $comment, $node);
+    }      
+  }
+  while ($divs-- > 0) {
+    $output .= '</div>';
+  }
+  if($depth0) $output .= '</div>';
+  return $output;
+}
+
+/**
  * Renders comment(s).
  *
  * @param $node
@@ -1104,46 +1170,18 @@
 
       $result = pager_query($query, $comments_per_page, 0, $query_count, $query_args);
 
-      $divs = 0;
       $num_rows = FALSE;
-      $comments = '';
+      $comments = array();
       drupal_add_css(drupal_get_path('module', 'comment') . '/comment.css');
       foreach ($result as $comment) {
         $comment = drupal_unpack($comment);
         $comment->name = $comment->uid ? $comment->registered_name : $comment->name;
         $comment->depth = count(explode('.', $comment->thread)) - 1;
-
-        if ($mode == COMMENT_MODE_THREADED_COLLAPSED || $mode == COMMENT_MODE_THREADED_EXPANDED) {
-          if ($comment->depth > $divs) {
-            $divs++;
-            $comments .= '<div class="indented">';
-          }
-          else {
-            while ($comment->depth < $divs) {
-              $divs--;
-              $comments .= '</div>';
-            }
-          }
-        }
-
-        if ($mode == COMMENT_MODE_FLAT_COLLAPSED) {
-          $comments .= theme('comment_flat_collapsed', $comment, $node);
-        }
-        elseif ($mode == COMMENT_MODE_FLAT_EXPANDED) {
-          $comments .= theme('comment_flat_expanded', $comment, $node);
-        }
-        elseif ($mode == COMMENT_MODE_THREADED_COLLAPSED) {
-          $comments .= theme('comment_thread_collapsed', $comment, $node);
-        }
-        elseif ($mode == COMMENT_MODE_THREADED_EXPANDED) {
-          $comments .= theme('comment_thread_expanded', $comment, $node);
-        }
+        $comments[] = $comment;
         $num_rows = TRUE;
       }
-      while ($divs-- > 0) {
-        $comments .= '</div>';
-      }
-      $output .= $comments;
+      comment_invoke_comment_prerender($node, $mode, &$comments);
+      $output .= theme('comment_list', $comments, $node);
       $output .= theme('pager', NULL, $comments_per_page, 0);
     }
 
@@ -1157,7 +1195,20 @@
 
   return $output;
 }
-
+function comment_invoke_comment_prerender($node, $mode, &$comments) {
+  $return = array();
+  foreach (module_implements('comment_prerender') as $name) {
+    $function = $name .'_comment_prerender';
+    $result = $function($node, $mode, $comments);
+    if (isset($result) && is_array($result)) {
+      $return = array_merge($return, $result);
+    }
+    else if (isset($result)) {
+      $return[] = $result;
+    }
+  }
+  return $return;
+}
 /**
  * Comment operations. Offer different update operations depending on
  * which comment administration page is being viewed.