Re: A simple git workflow for the rest of us

[Lars Magne Ingebrigtsen <larsi@gnus.org>]

Andreas Schwab <schwab@linux-m68k.org> writes:

>> I had problems pushing to trunk now after doing a "git pull" on the main
>> branch.  The error message was, as usual, pretty obscure.
>
> And it was?

It was lost in the mists of old xterms, but I did a new one.  First the
normal, expected push failure:

[larsi@stories ~/src/emacs/trunk]$ git push
To larsi@git.sv.gnu.org:/srv/git/emacs.git
 ! [rejected]        emacs-24 -> emacs-24 (non-fast-forward)
 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'larsi@git.sv.gnu.org:/srv/git/emacs.git'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Merge the remote changes (e.g. 'git pull')
hint: before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.

Then a pull that looks pretty normal:

[larsi@stories ~/src/emacs/trunk]$ git pull --rebase
remote: Counting objects: 203, done.
remote: Compressing objects: 100% (126/126), done.
remote: Total 126 (delta 109), reused 0 (delta 0)
Receiving objects: 100% (126/126), 17.80 KiB, done.
Resolving deltas: 100% (109/109), completed with 54 local objects.
From git.sv.gnu.org:/srv/git/emacs
   e68a171..6f167f9  master     -> origin/master
   a6b4278..c613f4d  emacs-24   -> origin/emacs-24
First, rewinding head to replay your work on top of it...
Applying: Add faces for the VC modeline state indicator.
Using index info to reconstruct a base tree...
Falling back to patching base and 3-way merge...
Auto-merging lisp/ChangeLog

And now the push.  I see that I was mistaken last time -- it did
actually push my trunk change, but it's complaining about the emacs-24
branch, where I have no changes and that I didn't want to push.

So...  is the hint it's giving the correct thing to do, or is there some
further configuration I should have done on the trunk to avoid these
messages?

[larsi@stories ~/src/emacs/trunk]$ git push
Counting objects: 7, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (4/4), 698 bytes, done.
Total 4 (delta 3), reused 0 (delta 0)
remote: Sending notification emails to: emacs-diffs@gnu.org
To larsi@git.sv.gnu.org:/srv/git/emacs.git
   6f167f9..48b2b32  master -> master
 ! [rejected]        emacs-24 -> emacs-24 (non-fast-forward)
error: failed to push some refs to 'larsi@git.sv.gnu.org:/srv/git/emacs.git'
hint: Updates were rejected because a pushed branch tip is behind its remote
hint: counterpart. If you did not intend to push that branch, you may want to
hint: specify branches to push or set the 'push.default' configuration
hint: variable to 'current' or 'upstream' to push only the current branch.

Anyway, if I then say:

[larsi@stories ~/src/emacs/trunk]$ cd ../emacs-24/
[larsi@stories ~/src/emacs/emacs-24]$ git pull
remote: Counting objects: 11, done.
remote: Compressing objects: 100% (6/6), done.
Unpacking objects: 100% (6/6), done.
remote: Total 6 (delta 5), reused 0 (delta 0)
From git.sv.gnu.org:/srv/git/emacs
   c613f4d..cf100f6  emacs-24   -> origin/emacs-24
Updating a6b4278..cf100f6
Fast-forward
 .gitignore                     |    2 +-
 ChangeLog                      |    4 ++
 admin/ChangeLog                |    6 ++
 admin/update_autogen           |   28 ++++++++--
 doc/emacs/ChangeLog            |    6 ++
 doc/emacs/misc.texi            |    8 ++-
 lisp/ChangeLog                 |   32 +++++++++++
 lisp/progmodes/js.el           |    4 +-
 lisp/progmodes/python.el       |   61 ++++++++++++--------
 lisp/version.el                |    4 +-
 lisp/window.el                 |    2 +-
 src/ChangeLog                  |    4 ++
 src/frame.c                    |    2 +-
 test/ChangeLog                 |   11 ++++
 test/automated/python-tests.el |  119 ++++++++++++++++++++++++++++++++++++++++
 test/indent/js.js              |    8 +++
 16 files changed, 263 insertions(+), 38 deletions(-)
[larsi@stories ~/src/emacs/emacs-24]$ cd ../trunk/
[larsi@stories ~/src/emacs/trunk]$ git push
Everything up-to-date

So "git pull" on the "new-workdir"'ed branch made pushing on the trunk
stop giving error messages.  Which is kinda fun.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no