Re: hit end-of-buffer key twice, now where was I?

[Kevin Rodgers <ihs_4664@yahoo.com>]

Dan Jacobson wrote:
 > Hit the key you bind to end-of-buffer twice by accident.  Notice how
 > now exchange-point-and-mark will not get you back to where you were.

C-x C-x
C-u C-SPC
C-u C-SPC

 > There ought to be boob protection. Same for beginning-of-buffer.
 > "Who would ever need to store a mark if the distance is 0?" perhaps?

Only boobs need boob protection:

(defadvice end-of-buffer (around eob-disable activate)
   "When called interactively at the end of the buffer, do nothing.
This prevents the mark from being reset."
   (or (and (interactive-p) (eobp))
       ad-do-it))

(defadvice beginning-of-buffer (around bob-disable activate)
   "When called interactively at the beginning of the buffer, do nothing.
This prevents the mark from being reset."
   (or (and (interactive-p) (bobp))
       ad-do-it))

-- 
Kevin Rodgers