Re: List of changed lines

On Do, 01 Dez 2022, Salman Halim wrote:

> One obvious way would be to have Vim go to the :earlier state, grab the
> contents of the buffer, come back to 'now' and then manually do a diff to see
> what's changed. However, that seems expensive for a large file. I was
> wondering, instead, if there might be a way to somehow get access to the undo
> information kept by Vim. I tried :wundo, but the file that was written was in a
> binary format, so wasn't something I could parse.

I believe gundo provides a way to directly show the diff between various
undo states¹ and I think you are right, the only way to do this is to
manually safe the state of the buffer and run a diff over that file with
the current buffer. I don't think there is an simpler way than that.

¹) see e.g. https://simnalamburt.github.io/vim-mundo/#usage and search
for preview pane

Best,
Christian
--
Sei sparsam, koste es was es wolle.

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