bug#23785: Emacs 25: 'Undo' overdoes things.

[Eli Zaretskii]

> From: phillip.lord@russet.org.uk (Phillip Lord)
> Cc: monnier@iro.umontreal.ca,  acm@muc.de,  23785@debbugs.gnu.org
> Date: Mon, 20 Jun 2016 18:12:29 +0100
> 
> >> From: phillip.lord@russet.org.uk (Phillip Lord)
> >> Cc: "Eli Zaretskii" <eliz@gnu.org>,  acm@muc.de,  23785@debbugs.gnu.org
> >> Date: Mon, 20 Jun 2016 16:03:35 +0100
> >> 
> >> My suggestion: this patch goes to Emacs-25.
> >
> > What patch?
> 
> Eli, do pay attention! The one that I didn't attach obviously.

Thanks, please push to the emacs-25 branch, with one change:

> +      /*
> +        Temporarily enable the undo-buffer to ensure that the change
> +        is marked as an undoable one. Bug #23785.
> +       */

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