SL Baur <steve(a)xemacs.org&gt; writes in xemacs-beta(a)xemacs.org: O.K. I figured this out. Something needs to change. The function `widget-glyph-find' in wid-edit.el uses a suboptimal algorithm to find glyphs. It puts `widget-glyph-directory' or (locate-data-directory "custom") at the front of a search path, then adds `data-directory-list'. This would be fine except that it then proceeds to search for a list of formats across the whole search path with priority going first to .xpm, then to .gif, .png, .jpg, and .xbm. NOTE 1: I would argue that .png should go to the head, followed by .xpm, .gif, .jpg and .xbm. The end result being that "open-up.xpm" in etc/w3 is found ahead of "open-up.png" in etc/custom when `widget-glyph-find' is called: (widget-glyph-find "open-up" "blahblah") even though etc/custom is supposedly first in the search path. Noting also that the `widget-glyph-cache' only caches the basename, not the path, it seems like all glyph names across XEmacs and Lisp extensions must be unique. I don't believe this is a restriction we can or should enforce. William, Hrvoje, thoughts?