Re: Question: is there a short way to merge the last commit to the second last one?

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On 9 June 2025 3:13:01 am IST, "brian m. carlson" <sandals@xxxxxxxxxxxxxxxxxxxx> wrote:
>On 2025-06-08 at 19:35:24, Aditya Garg wrote:
>> 
>> 
>> On 9 June 2025 1:01:19 am IST, Phillip Wood <phillip.wood123@xxxxxxxxx> wrote:
>> >On 08/06/2025 19:57, brian m. carlson wrote:
>> >> 
>> >> If your goal is to just do the fixups and squash and not anything else
>> >> interactive, then you can do this:
>> >> 
>> >>      GIT_SEQUENCE_EDITOR=true git rebase -i --autosquash
>> >
>> >Just a quick note to say that since git v2.44.0 you can just run
>> >
>> >	git rebase --autosquash
>> >
>> 
>> Silly question but how does it get to know what is the fixup commit?
>
>That's actually a great question.  When you do `git commit --squash
>REVISION`, it takes the summary of the commit specified by `REVISION`
>and precedes it with `squash! `, and for `--fixup`, it does `fixup! `.
>
>Then, it's just a matter of re-ordering the squash or fixup commits in
>order after the commit with the corresponding summary.
>
>So with this shell script:
>
>----
>#!/bin/sh
>
>git init --object-format=sha256 test-repo
>cd test-repo
>
>echo abc >file.txt
>git add file.txt
>git commit -m 'Initial commit'
>
>echo def >file.txt
>git add file.txt
>git commit --fixup HEAD
>git show
>----
>
>You get something like this:
>
>----
>Initialized empty Git repository in /tmp/user/1000/test-repo/.git/
>[dev (root-commit) 7327102] Initial commit
> 1 file changed, 1 insertion(+)
> create mode 100644 file.txt
>[dev 8bdd271] fixup! Initial commit
> 1 file changed, 1 insertion(+), 1 deletion(-)
>commit 8bdd271b6d4e22b7ca697c2d4499fd3e0825977d7d2c917b92e1f1f12383f52c
>Author: brian m. carlson <sandals@xxxxxxxxxxxxxxxxxxxx>
>Date:   Sun Jun 8 21:41:43 2025 +0000
>
>    fixup! Initial commit
>
>diff --git a/file.txt b/file.txt
>index e0ef420..559afde 100644
>--- a/file.txt
>+++ b/file.txt
>@@ -1 +1 @@
>-abc
>+def
>----
>
>Of course, `--autosquash` does require using `--fixup` and `--squash` or
>otherwise naming the commits that way.

Now it's clear. Thanks a lot brian and Junio!





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