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Vim help suggests a nice command to show a side-by-side diff of the current buffer since the last save:

command DiffOrig vert new | set bt=nofile | r ++edit # | 0d_
    \ | diffthis | wincmd p | diffthis

I'm wondered how to do the same, but show a patch instead (like running diff -u) in a new window.

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  • Please don’t put answers in the question. Post your own answer instead.
    – D. Ben Knoble
    Apr 23, 2023 at 17:38

1 Answer 1

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I would do:

command! PatchOrig silent %y | vert new | set bt=nofile | put | 0d_ | set ft=diff | silent %!diff -u # -
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