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2019-08-19rebase -i: always update HEAD before rewordingPhillip Wood
If the user runs git log while rewording a commit it is confusing if sometimes we're amending the commit that's being reworded and at other times we're creating a new commit depending on whether we could fast-forward or not[1]. Fix this inconsistency by always committing the picked commit and then running 'git commit --amend' to do the reword. The first commit is performed by the sequencer without forking git commit and does not impact on the speed of rebase. In a test rewording 100 commits with GIT_EDITOR=true GIT_SEQUENCE_EDITOR='sed -i s/pick/reword/' \ ../bin-wrappers/git rebase -i --root and taking the best of three runs the current master took 957ms and with this patch it took 961ms. This change fixes rewording the new root commit when rearranging commits with --root. Note that the new code no longer updates CHERRY_PICK_HEAD after creating a root commit - I'm not sure why the old code was that creating that ref after a successful commit, everywhere else it is removed after a successful commit. [1] https://public-inbox.org/git/xmqqlfvu4be3.fsf@gitster-ct.c.googlers.com/T/#m133009cb91cf0917bcf667300f061178be56680a Reported-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-24t7505: add tests for cherry-pick and rebase -i/-pPhillip Wood
Check that cherry-pick and rebase call the 'prepare-commit-msg' hook correctly. The expected values for the hook arguments are taken to match the current master branch. I think there is scope for improving the arguments passed so they make a bit more sense - for instance cherry-pick currently passes different arguments depending on whether the commit message is being edited. Also the arguments for rebase could be improved. Commit 7c4188360ac ("rebase -i: proper prepare-commit-msg hook argument when squashing", 2008-10-3) apparently changed things so that when squashing rebase would pass 'squash' as the argument to the hook but that has been lost. I think that it would make more sense to pass 'message' for revert and cherry-pick -x/-s (i.e. cases where there is a new message or the current message in modified by the command), 'squash' when squashing with a new message and 'commit HEAD/CHERRY_PICK_HEAD' otherwise (picking and squashing without a new message). Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>