Re: How to amalgamate changes across multiple buffers into a single undo entry

[Michael Heerdegen]

Brian Leung <leungbk@mailfence.com> writes:

> Suppose one action causes a change in two buffers. I'd like a way of
> performing an undo operation so that both buffers will be undone at
> once. But I can't figure out how to amalgamate the buffer changes
> properly.

When I read the code it doesn't seem that this is supported.  AFAIU,
`undo-amalgamate-change-group' handles all buffers of a multi-buffer
change group separately.  I guess buffer-undo-list also just doesn't
support what you want.

Michael.