(setq ref-point (point)
;; FIXME this does not work for constructs with
;; embedded space, eg "sync all".
- back-point (save-excursion (backward-word 1) (point))
+ back-point (save-excursion (backward-word-strictly 1)
+ (point))
saveword (buffer-substring back-point ref-point))
(funcall change-word -1)
(or (string= saveword (buffer-substring back-point ref-point))