Re: Trouble testing out a patch on a branch new scratch git.git repository

[Junio C Hamano <gitster@pobox.com>]

Brent Goodrick <bgoodr@gmail.com> writes:

> What I really want to do is simply replace the last two commits on the
> branch with one commit, so that when I make my patch it will be just
> the full set of changes and not a lot of noise. Is there a way to do
> that? (note: I did try the git merge --squash command but it just
> showed me the usage, as I was on my bg/no-progress branch).  Note that
> I know that I would not be able to do this once some of my changes had
> merged upstream.

Suppose you have this topology.  You forked and built 2 commits, while the
upstream advanced its tip (or not).

                 1--2 your commits (master)
                /
	---o---o---o upstream (origin)

1. Using "rebase -i"

    ... on your "master"
    $ git rebase -i origin
    ... will give you an insn sheet for interactive rebase to edit.
    ... you will see something like:

	pick xxxxxx title of commit 1
       	pick yyyyyy title of commit 2

    ... edit the second "pick" to "squash", save and exit the editor.
    ... You are telling it to "first cherry-pick my 1, and then squash my
    ... 2 on top of it.

    ... it will do as it is told, and will give you another editor, with
    ... messages from both commits in it.  Edit to formulate a log message
    ... suitable for the combined commit, save and exit the editor.

   You will end up with:

	---o---o---o---X

   where rightmost 'o' is still origin, X is your two commits squashed
   into one.

2. Using "mrege -s squash"

    ... on your "master"
    $ git merge --squash origin
    ... this will stop without creating a commit.  Then you would
    $ git commit
    ... and the editor will give you the log message from all the
    ... commits on the branch you just merged.  Come up with a single
    ... log message to describe all, save and exit the editor.

   You will end up with:

	---o---o---o---X

   where rightmost 'o' is still origin, X is your two commits squashed
   into one.