Re: disabling undo boundaries

[Stefan Monnier]

>> Then maybe you could try a hack like:
>> 
>> (with-current-buffer "*scratch*"
>>   <doyourthing>)
>> (let ((buffer-undo-list))
>>   (undo-boundary))           ; Set last_undo_buffer.
> It doesn't unfortunately.

Oh, indeed when buffer-undo-list, undo-boundary is a no-op, so you need

   (with-current-buffer "*scratch*"
     <doyourthing>)
   (let ((buffer-undo-list '("")))
     (undo-boundary))           ; Set last_undo_buffer.

> It is, and one that has been in Emacs for a long time.  How wedded to
> keeping it are you? Would it be possible to optionalize?

Not sure,


        Stefan