Index: modules/node/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/node.module,v
retrieving revision 1.1333
diff -u -p -r1.1333 node.module
--- modules/node/node.module	15 Dec 2010 03:47:28 -0000	1.1333
+++ modules/node/node.module	29 Dec 2010 19:15:42 -0000
@@ -1159,8 +1159,7 @@ function node_save($node) {
 /**
  * Helper function to save a revision with the uid of the current user.
  *
- * Node is taken by reference, because drupal_write_record() updates the
- * $node with the revision id, and we need to pass that back to the caller.
+ * The resulting revision ID is available afterward in $node->vid.
  */
 function _node_save_revision($node, $uid, $update = NULL) {
   $temp_uid = $node->uid;
@@ -1171,6 +1170,7 @@ function _node_save_revision($node, $uid
   else {
     drupal_write_record('node_revision', $node);
   }
+  // Node object should keep the node author's uid, not the revision author's.
   $node->uid = $temp_uid;
 }