bug#21968: Apparent regression on the undo command

[Phillip Lord]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: John Wiegley <jwiegley@gmail.com>
>> Date: Mon, 14 Dec 2015 12:04:59 -0800
>> Cc: David Reitter <david.reitter@gmail.com>, 21968@debbugs.gnu.org
>> 
>> I just built emacs-25, but most actions that I take give me errors like the
>> following:
>> 
>>     Symbol’s function definition is void: undo-auto-amalgamate
>> 
>> Have I omitted to do something?
>
> I don't know, but that function is in simple.el.  Did you build in a
> clean directory?

I'd suspect a clean build here, also. I introduced undo-auto-amalgamate
in eaa1fd6d.

Phil