Re: vim: revert a specific change in the undo history

On Tue, 11 Jul 2023, 20:26 Christian Brabandt, <cblists@256bit.org> wrote:

On Di, 11 Jul 2023, ping song wrote:

> say I've done 3 changes A, B, C.
> but I realized B is a big mistake. A and C is good.
> can I just delete change B, but keep A and C?

I believe this is not possible. What you can do is, copy the whole
buffer at state C, move back to state A and clear the buffer and paste
the content from State C (effectively creating a new change A->D)

An alternative would be to use the history commands to get at each version and either use diff/patch tools or a 3-way merge tool like BeyondCompare to sort it out.

e.g. (untested):

* Open file at State C

* :w statec.txt

* Revert to State B

* :w stateb.txt

* Revert to State A

* :w statea.txt

* diff -u stateb.txt statec.txt > c_changes.diff

* patch -p0 statea.txt < c_changes.diff

(check all of those commands before running as they were off the top of my head!)

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