- Fixed a small glitch in book_tree()

1 files changed, 6 insertions, 2 deletions

diff --git a/modules/book.module b/modules/book.module
index 37b9a2352..1e2a77979 100644
--- a/modules/book.module
+++ b/modules/book.module
@@ -454,11 +454,14 @@ function book_toc($parent = 0, $indent = "", $toc = array()) {
 
 function book_tree_recurse($nid, $depth, $children) {
 
-  if ($depth > 1) {
+  if ($depth > 0) {
     if ($children[$nid]) {
       foreach ($children[$nid] as $foo => $node) {
         $output .= "<li><a href=\"node.php?id=$node->nid\">". check_output($node->title) ."</a></li>";
-        $output .= book_tree_recurse($node->nid, $depth - 1, $children);
+
+        if ($tree = book_tree_recurse($node->nid, $depth - 1, $children)) {
+          $output .= "<ul>$tree</ul>";
+        }
       }
     }
   }
@@ -476,6 +479,7 @@ function book_tree($parent = 0, $depth = 3) {
     array_push($list, $node);
     $children[$node->parent] = $list;
   }
+
   $output = book_tree_recurse($parent, $depth, $children);
   $output = "<ul>$output</ul>";