bug#31658: 25.2; Number of changes undone should be controlled by a variable

[Lars Ingebrigtsen <larsi@gnus.org>]

Ruy Exel <ruyexel@gmail.com> writes:

> After I updated Emacs to the latest version I noticed that the behavior
> of the undo command has changed in the sense that a single invocation of
> undo effectively undoes many more recent changes than it used to and I
> often find myself having to re-do the changes and reentering the whole
> information again rather than taking advantage of the undo command.
>
> After a little fiddling I realized that this feature is controlled by
> the function 'undo-auto-amalgamate' which contains the line
>
>   (< last-amalgamating-count 20)
>
> apparently bundling up to 20 recent changes for the next invocation of
> undo.
>
> My solution was simply to edit that function, replacing 20 by zero, and
> the old behavior, which I am used to, was restored.
>
> The purpose of this bug-report/feature-request is to suggest that
> instead of hard coding a fixed number, such as 20, the number of changes
> bundled together should be determined by a variable which the user could
> customize if desired.

I think that sounds like a reasonable (and useful) request.  Does
anybody object to adding such a defcustom?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no