Re: undo mechanism (was Re: turning off (or enhancing) a couple of new features)

[Richard Stallman]

    The messages also seem to appear when I edit (using emacs lisp) a file
    that is only ~700k in size (at the end of the day), but in which I'm
    doing a lot of programmed manipulation.

I can see why it might happen in that kind of case.

    To deal with this, when I'm doing a lot of programmatic editing, I
    just turn undo off.

That might in fact be the best thing to do.

Do you find it is useful for this programmed manipulation to save undo
elements?  Should it attempt to optimize its undo elements?