[martinvonz]

To move the changes in file `foo` in the working copy into a past commit `X`:

`git commit --fixup=X foo; git stash; git rebase -i X^; git stash pop`

`jj squash --into X foo`

[Aissen]

You can simplify this:

git commit --fixup X ; git rebase --interactive --autostash --autosquash X^

If you do that often, an alias might help; I have one for the second command above. You might want to look at git-fixup or git-absorb for automatically finding the "X" commit.

Aside: I really ought to try jj, it looks very promising.

[steveklabnik]

jj has jj absorb already.

[Aissen]

I heard it worked even better than git-absorb, is that true?

[steveklabnik]

I have not used either, so I cannot answer that.

[Martinussen]

That looks more like a git alias than a job for an entirely new tool, to me. How many of the core functions do you really need to cover before `jj` itself becomes redundant?

[martinvonz]

I apologize if my sibling comment sounded harsh. I think you were saying that jj could be implemented as some Git aliases. Given the information available in this thread, that might seem reasonable. I didn't realize that this thread did not include a link to the project's docs. Sorry about that.

[martinvonz]

I think you misunderstood. Did you see the list of features? My example is not the only thing jj does.