Andy Piper <andy(a)xemacs.org&gt; writes: Note that I did not click on any tab. However the selected buffer changed. Before we do any fancy thing to keep the two caches consistent (such as creating a "cached_image_instance" object that proxys for image_instances, but has a finalizer that removes it from the frame cache). How about trying to get rid of the frame cache alltogether? AFAICS the frame cache is only used in the loops in redisplay_unmap_subwindow and find_matching_subwindow. Can they be replaced by a loop over all windows followed by a map over their caches? Jan