Re: can undo unamalgamation be turned off reliably and completely?

[Michael Heerdegen]

Samuel Wales <samologist@gmail.com> writes:

> amalgamating-undo-limit does not exist in my emacs 25.  in what
> version did/will it first appear?

Ok, I see, it has been introduced 1 year ago, and before that the 20 was
hardcoded.

Do you have this variable?

| undo-auto-current-boundary-timer is a variable defined in `simple.el'.
| [...]
| Current timer which will run `undo-auto--boundary-timer' or nil.
| 
| If set to non-nil, this will effectively disable the timer.

If you set this variable to, say, t, that should turn off this feature.
Should exist in 25.  May be named "undo-auto--current-boundary-timer"
there.

Michael.