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GIT_REFLOG_ACTION is an environment variable specifying the reflog
message to write after an action is completed. Several other commands
including merge, reset, and commit respect it.
Fix the failing tests in t/checkout-last by making checkout respect it
too. You can now expect
$ git checkout -
to work as expected after any operation that internally uses "checkout"
as its implementation detail, e.g. "rebase".
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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$ git checkout -
does not work as expected after a rebase. This is because the
reflog records "checkout" made by "rebase" as its implementation
detail the same way as end-user initiated "checkout", and makes it
count as the branch that was previously checked out.
Add four failing tests documenting this bug: two for a normal rebase,
and another two for an interactive rebase.
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When flipping commits around on topic branches, I often end up doing
this sequence:
* Run "log --oneline next..jc/frotz" to find out the first commit
on 'jc/frotz' branch not yet merged to 'next';
* Run "checkout $that_commit^" to detach HEAD to the parent of it;
* Rebuild the series on top of that commit; and
* "show-branch jc/frotz HEAD" and "diff jc/frotz HEAD" to verify.
Introduce a new syntax to "git checkout" to name the commit to switch to,
to make the first two steps easier. When the branch to switch to is
specified as A...B (you can omit either A or B but not both, and HEAD
is used instead of the omitted side), the merge base between these two
commits are computed, and if there is one unique one, we detach the HEAD
at that commit.
With this, I can say "checkout next...jc/frotz".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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You can have quite a many reflog entries, but you typically won't recall
which branch you were on after switching branches for more than several
times.
Instead of reading the reflog twice, this reads the branch switching event
and keeps as many entries as the user asked from the latest such entries,
which is the minimum required to be able to switch back to the branch we
were recently on.
[jc: improvements from Dscho squashed in]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Have '-' mean the same as '@{-1}', i.e., the last branch we were on.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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