Feed added on pages other than node view.

Comment RSS is handling the drupal_add_feed logic in the menu system, which means that every URL beginning with node/$nid will get a comment feed link, whether it is appropriate or not. Example: editing a node results in a comment feed link appearing at the bottom.

The nodeapi hook seems a more logical place to execute this call; that way it can be limited to particular types of comment and only execute during a page view of the node in question.

There might also be an appropriate comment hook which would be useful for attaching the comment feed.

A simple (and not completely tested) fix for users who want the feed to appear only on a node view is to add arg(2)==NULL to the condition branch in the menu hook.