Re: undo in loaddefs.el buffer

[Richard Stallman]

    If they think about it.  Maybe we should add something to
    `(elisp)Timers' about this, if we are sure that we definitely do not
    want timers do make undo boundaries automatically.  I could do this,
    if desired.

I think it is to change the timer functions rather than the timer
mechanism.  This is because not many timers will need to do it, and it
will take some experimenting to determine just what they should do.

I updated the manual.