Re: [PATCH v4 4/4] rebase --skip: clean up commit message after a failed fixup/squash

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Hi Stefan,

On Fri, 27 Apr 2018, Stefan Beller wrote:

> On Fri, Apr 27, 2018 at 1:48 PM, Johannes Schindelin
> <johannes.schindelin@xxxxxx> wrote:
> > During a series of fixup/squash commands, the interactive rebase builds
> > up a commit message with comments. This will be presented to the user in
> > the editor if at least one of those commands was a `squash`.
> 
> This sounds as if the whole series will be presented to the user, i.e.
> 
>  pick A
>  squash B
>  fixup C
> 
> would present A+B+C in the editor.

And that is indeed the case. The commit message would look something like
this:

	# This is a combination of 3 commits.
	# This is commit message #1:

	Hello Stefan

	This is A.

	# This is commit message #2:

	squash! A

	Me again, Stefan. I am here to be squashed.

	# The commit message #3 will be skipped:
	#
	# fixup! A

> I always assumed the sequencer to be linear, i.e. pick A+B, open editor
> and then fixup C into the previous result?

Nope.

> No need to resend it reworded, I just realize that I never tested my
> potentially wrong assumption.

No worries, you learned something today.

> > The diff is best viewed with --color-moved.
> 
> ... and web pages are "best viewed with IE 6.0" ;-)

That is what I had in mind writing that.

> I found this so funny that I had to download the patches and actually
> look at them using the move detection only to find out that only very
> few lines are moved, as there are only very few deleted lines.

I agree that the current iteration is no longer such obvious a move. I had
to add tons of stuff to fix the extra issues I found while working on v4.

But still, I found it super-helpful to see that the code was actually
moved, and where, because I essentially had to break up the nice sequence
of "is it clean? Yes? Then nothing to be done! No? Is HEAD to be amended?
Yes? No?" and basically build a matrix what to do in all combinations of
"clean? Amend HEAD?"

Ciao,
Dscho



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