Am Sonntag, 3. Februar 2008 02:15 schrieb Stephen J. Turnbull: from GNU's subr.el: (defun looking-back (regexp &optional limit greedy) "Return non-nil if text before point matches regular expression REGEXP. Like `looking-at' except matches before point, and is slower. LIMIT if non-nil speeds up the search by specifying a minimum starting position, to avoid checking matches that would start before LIMIT. If GREEDY is non-nil, extend the match backwards as far as possible, stopping when a single additional previous character cannot be part of a match for REGEXP." (let ((start (point)) (pos (save-excursion (and (re-search-backward (concat "\\(?:" regexp "\\)\\=") limit t) (point))))) (if (and greedy pos) (save-restriction (narrow-to-region (point-min) start) (while (and (> pos (point-min)) (save-excursion (goto-char pos) (backward-char 1) (looking-at (concat "\\(?:" regexp "\\)\\'")))) (setq pos (1- pos))) (save-excursion (goto-char pos) (looking-at (concat "\\(?:" regexp "\\)\\'"))))) (not (null pos)))) BTW tried with `char-before' to write an alternative, but that turned out much more complicated. Andreas Röhler _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://calypso.tux.org/cgi-bin/mailman/listinfo/xemacs-beta