This patch restores the constant font-running-xemacs to font.el in 21.5 core, which was removed in a cleanup of the file back in November. Without this w3.el will not work (M-x w3 will fail trying to load the home page). Is says something about the popularity of w3 on 21.5 if such as glaring bug takes 5 months to be noticed! Malcolm lisp/ChangeLog addition: 2006-05-06 Malcolm Purvis <malcolmp(a)xemacs.org&gt; * font.el (font-running-xemacs): Restore definition. xemacs-21.5-micro-patches source patch: Diff command: cvs -q diff -u Files affected: lisp/font.el Index: lisp/font.el =================================================================== RCS file: /pack/xemacscvs/XEmacs/xemacs/lisp/font.el,v retrieving revision 1.20 diff -u -r1.20 font.el --- lisp/font.el 2006/04/25 14:01:53 1.20 +++ lisp/font.el 2006/05/06 12:24:50 ＠＠ -102,6 +102,9 ＠＠ ;;; Lots of variables / keywords for use later in the program ;;; Not much should need to be modified ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +(defconst font-running-xemacs (string-match "XEmacs" (emacs-version)) + "Whether we are running in XEmacs or not.") + ;; #### These aren't window system mappings (defconst font-window-system-mappings '((x . (x-font-create-name x-font-create-object)) -- Malcolm Purvis <malcolmp(a)xemacs.org&gt;