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Author SHA1 Message Date
Brian Lyles ec79d763de cherry-pick: add `--empty` for more robust redundant commit handling
As with git-rebase(1) and git-am(1), git-cherry-pick(1) can result in a
commit being made redundant if the content from the picked commit is
already present in the target history. However, git-cherry-pick(1) does
not have the same options available that git-rebase(1) and git-am(1) have.

There are three things that can be done with these redundant commits:
drop them, keep them, or have the cherry-pick stop and wait for the user
to take an action. git-rebase(1) has the `--empty` option added in commit
e98c4269c8 (rebase (interactive-backend): fix handling of commits that
become empty, 2020-02-15), which handles all three of these scenarios.
Similarly, git-am(1) got its own `--empty` in 7c096b8d61 (am: support
--empty=<option> to handle empty patches, 2021-12-09).

git-cherry-pick(1), on the other hand, only supports two of the three
possiblities: Keep the redundant commits via `--keep-redundant-commits`,
or have the cherry-pick fail by not specifying that option. There is no
way to automatically drop redundant commits.

In order to bring git-cherry-pick(1) more in-line with git-rebase(1) and
git-am(1), this commit adds an `--empty` option to git-cherry-pick(1). It
has the same three options (keep, drop, and stop), and largely behaves
the same. The notable difference is that for git-cherry-pick(1), the
default will be `stop`, which maintains the current behavior when the
option is not specified.

Like the existing `--keep-redundant-commits`, `--empty=keep` will imply
`--allow-empty`.

The `--keep-redundant-commits` option will be documented as a deprecated
synonym of `--empty=keep`, and will be supported for backwards
compatibility for the time being.

Signed-off-by: Brian Lyles <brianmlyles@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-03-25 16:45:41 -07:00
Junio C Hamano 6789275d37 tests: teach callers of test_i18ngrep to use test_grep
They are equivalents and the former still exists, so as long as the
only change this commit makes are to rewrite test_i18ngrep to
test_grep, there won't be any new bug, even if there still are
callers of test_i18ngrep remaining in the tree, or when merged to
other topics that add new uses of test_i18ngrep.

This patch was produced more or less with

    git grep -l -e 'test_i18ngrep ' 't/t[0-9][0-9][0-9][0-9]-*.sh' |
    xargs perl -p -i -e 's/test_i18ngrep /test_grep /'

and a good way to sanity check the result yourself is to run the
above in a checkout of c4603c1c (test framework: further deprecate
test_i18ngrep, 2023-10-31) and compare the resulting working tree
contents with the result of applying this patch to the same commit.
You'll see that test_i18ngrep in a few t/lib-*.sh files corrected,
in addition to the manual reproduction.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-11-02 17:13:44 +09:00
Elijah Newren f222bd34ff tests: remove leftover untracked files
Remove untracked files that are unwanted after they are done being used.

While the set of cases in this patch is certainly far from
comprehensive, it was motivated by some work to see what the fallout
would be if we were to make the removal of untracked files as a side
effect of other commands into an error.  Some cases were a bit more
involved than the testcase changes included in this patch, but the ones
included here represent the simple cases.  While this patch is not that
important since we are not changing the behavior of those other commands
into an error in the near term, I thought these changes were useful
anyway as an explicit documentation of the intent that these untracked
files are no longer useful.

Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Acked-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-12 16:42:40 -07:00
Elijah Newren 39edfd5cbc sequencer: fix edit handling for cherry-pick and revert messages
save_opts() should save any non-default values.  It was intended to do
this, but since most options in struct replay_opts default to 0, it only
saved non-zero values.  Unfortunately, this does not always work for
options.edit.  Roughly speaking, options.edit had a default value of 0
for cherry-pick but a default value of 1 for revert.  Make save_opts()
record a value whenever it differs from the default.

options.edit was also overly simplistic; we had more than two cases.
The behavior that previously existed was as follows:

                       Non-conflict commits    Right after Conflict
    revert             Edit iff isatty(0)      Edit (ignore isatty(0))
    cherry-pick        No edit                 See above
    Specify --edit     Edit (ignore isatty(0)) See above
    Specify --no-edit  (*)                     See above

    (*) Before stopping for conflicts, No edit is the behavior.  After
        stopping for conflicts, the --no-edit flag is not saved so see
        the first two rows.

However, the expected behavior is:

                       Non-conflict commits    Right after Conflict
    revert             Edit iff isatty(0)      Edit iff isatty(0)
    cherry-pick        No edit                 Edit iff isatty(0)
    Specify --edit     Edit (ignore isatty(0)) Edit (ignore isatty(0))
    Specify --no-edit  No edit                 No edit

In order to get the expected behavior, we need to change options.edit
to a tri-state: unspecified, false, or true.  When specified, we follow
what it says.  When unspecified, we need to check whether the current
commit being created is resolving a conflict as well as consulting
options.action and isatty(0).  While at it, add a should_edit() utility
function that compresses options.edit down to a boolean based on the
additional information for the non-conflict case.

continue_single_pick() is the function responsible for resuming after
conflict cases, regardless of whether there is one commit being picked
or many.  Make this function stop assuming edit behavior in all cases,
so that it can correctly handle !isatty(0) and specific requests to not
edit the commit message.

Reported-by: Renato Botelho <garga@freebsd.org>
Signed-off-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-31 14:10:50 -07:00
Ævar Arnfjörð Bjarmason 1108cea7f8 tests: remove most uses of test_i18ncmp
As a follow-up to d162b25f95 (tests: remove support for
GIT_TEST_GETTEXT_POISON, 2021-01-20) remove most uses of test_i18ncmp
via a simple s/test_i18ncmp/test_cmp/g search-replacement.

I'm leaving t6300-for-each-ref.sh out due to a conflict with in-flight
changes between "master" and "seen", as well as the prerequisite
itself due to other changes between "master" and "next/seen" which add
new test_i18ncmp uses.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-02-10 23:48:27 -08:00
Johannes Schindelin 5b7a64df40 cherry-pick: add test for `--skip` advice in `git commit`
In dcb500dc16 (cherry-pick/revert: advise using --skip, 2019-07-02),
`git commit` learned to suggest to run `git cherry-pick --skip` when
trying to cherry-pick an empty patch, but that was never tested for.

Here is a test that verifies that a message is given to the user that
contains the correct invocation.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-06 09:32:01 -08:00
Rohit Ashiwal dcb500dc16 cherry-pick/revert: advise using --skip
The previous commit introduced a --skip flag for cherry-pick and
revert. Update the advice messages, to tell users about this less
cumbersome way of skipping commits. Also add tests to ensure
everything is working fine.

Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-07-02 12:08:08 -07:00
Rohit Ashiwal de81ca3f36 cherry-pick/revert: add --skip option
git am or rebase have a --skip flag to skip the current commit if the
user wishes to do so. During a cherry-pick or revert a user could
likewise skip a commit, but needs to use 'git reset' (or in the case
of conflicts 'git reset --merge'), followed by 'git (cherry-pick |
revert) --continue' to skip the commit. This is more annoying and
sometimes confusing on the users' part. Add a `--skip` option to make
skipping commits easier for the user and to make the commands more
consistent.

In the next commit, we will change the advice messages hence finishing
the process of teaching revert and cherry-pick "how to skip commits".

Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-07-02 12:08:08 -07:00
Sergey Organov c812bd4669 t3510: stop using '-m 1' to force failure mid-sequence of cherry-picks
We are going to allow 'git cherry-pick -m 1' for non-merge commits, so
this method to force failure will stop to work.

Use '-m 4' instead as it's very unlikely we will ever have such an
octopus in this test setup.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-12-26 14:43:21 -08:00
Junio C Hamano 39e415cfd1 Merge branch 'nd/cherry-pick-quit-fix'
"git cherry-pick --quit" failed to remove CHERRY_PICK_HEAD even
though we won't be in a cherry-pick session after it returns, which
has been corrected.

* nd/cherry-pick-quit-fix:
  cherry-pick: fix --quit not deleting CHERRY_PICK_HEAD
2018-08-20 12:41:34 -07:00
Nguyễn Thái Ngọc Duy 3e7dd99208 cherry-pick: fix --quit not deleting CHERRY_PICK_HEAD
--quit is supposed to be --abort but without restoring HEAD. Leaving
CHERRY_PICK_HEAD behind could make other commands mistake that
cherry-pick is still ongoing (e.g. "git commit --amend" will refuse to
work). Clean it too.

For --abort, this job of deleting CHERRY_PICK_HEAD is on "git reset"
so we don't need to do anything else. But let's add extra checks in
--abort tests to confirm.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-16 10:02:55 -07:00
Junio C Hamano d94cecfe75 Merge branch 'jk/empty-pick-fix'
Handling of an empty range by "git cherry-pick" was inconsistent
depending on how the range ended up to be empty, which has been
corrected.

* jk/empty-pick-fix:
  sequencer: don't say BUG on bogus input
  sequencer: handle empty-set cases consistently
2018-07-24 14:50:48 -07:00
Jeff King 8530c73915 sequencer: handle empty-set cases consistently
If the user gives us a set that prepare_revision_walk()
takes to be empty, like:

  git cherry-pick base..base

then we report an error. It's nonsense, and there's nothing
to pick.

But if they use revision options that later cull the list,
like:

  git cherry-pick --author=nobody base~2..base

then we quietly create an empty todo list and return
success.

Arguably either behavior is acceptable, but we should
definitely be consistent about it. Reporting an error
seems to match the original intent, which dates all the way
back to 7e2bfd3f99 (revert: allow cherry-picking more than
one commit, 2010-06-02). That in turn was trying to match
the single-commit case that existed before then (and which
continues to issue an error).

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-11 08:37:47 -07:00
brian m. carlson 2ece6ad281 t: switch $_x40 to $OID_REGEX
Switch all uses of $_x40 to $OID_REGEX so that they work correctly with
larger hashes.  This commit was created by using the following sed
command to modify all files in the t directory except t/test-lib.sh:

  sed -i 's/\$_x40/$OID_REGEX/g'

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-14 11:02:01 +09:00
Junio C Hamano deb9845a0a Merge branch 'ps/test-chmtime-get'
Test cleanup.

* ps/test-chmtime-get:
  t/helper: 'test-chmtime (--get|-g)' to print only the mtime
2018-04-25 13:29:00 +09:00
Paul-Sebastian Ungureanu decf711fc1 t/helper: 'test-chmtime (--get|-g)' to print only the mtime
Compared to 'test-chmtime -v +0 file' which prints the mtime and
and the file name, 'test-chmtime --get file' displays only the mtime.
If it is used in combination with (+|=|=+|=-|-)seconds, it changes
and prints the new value.

	test-chmtime -v +0 file | sed 's/[^0-9].*$//'

is now equivalent to:

	test-chmtime --get file

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-09 11:33:19 +09:00
Nguyễn Thái Ngọc Duy 0e496492d2 t/helper: merge test-chmtime into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Junio C Hamano c7f352f31a Merge branch 'pb/test-must-fail-is-for-git'
Test cleanup.

* pb/test-must-fail-is-for-git:
  t9813: avoid using pipes
  don't use test_must_fail with grep
2017-01-18 15:12:15 -08:00
Pranit Bauva c7cf956618 don't use test_must_fail with grep
test_must_fail should only be used for testing git commands. To test the
failure of other commands use `!`.

Reported-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 13:20:01 -08:00
Stephan Beyer 1e41229d96 sequencer: make sequencer abort safer
In contrast to "git am --abort", a sequencer abort did not check
whether the current HEAD is the one that is expected. This can lead
to loss of work (when not spotted and resolved using reflog before
the garbage collector chimes in).

This behavior is now changed by mimicking "git am --abort".  The
abortion is done but HEAD is not changed when the current HEAD is
not the expected HEAD.

A new file "sequencer/abort-safety" is added to save the expected
HEAD.

The new behavior is only active when --abort is invoked on multiple
picks. The problem does not occur for the single-pick case because
it is handled differently.

Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 14:50:45 -08:00
Stephan Beyer aeebd98ebe t3510: test that cherry-pick --abort does not unsafely change HEAD
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 14:50:45 -08:00
Martin von Zweigbergk 5d77298d08 tests: move test_cmp_rev to test-lib-functions
A function for checking that two given parameters refer to the same
revision was defined in several places, so move the definition to
test-lib-functions.sh instead.

Signed-off-by: Martin von Zweigbergk <martinvonz@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-22 19:06:35 -08:00
Miklos Vajna 5ed75e2a3f cherry-pick: don't forget -s on failure
In case 'git cherry-pick -s <commit>' failed, the user had to use 'git
commit -s' (i.e. state the -s option again), which is easy to forget
about.  Instead, write the signed-off-by line early, so plain 'git
commit' will have the same result.

Also update 'git commit -s', so that in case there is already a relevant
Signed-off-by line before the Conflicts: line, it won't add one more at
the end of the message. If there is no such line, then add it before the
the Conflicts: line.

Signed-off-by: Miklos Vajna <vmiklos@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-14 10:04:29 -07:00
Junio C Hamano 1b829eee17 Merge branch 'rr/maint-t3510-cascade-fix'
* rr/maint-t3510-cascade-fix:
  t3510 (cherry-pick-sequence): add missing '&&'
2012-06-07 09:07:27 -07:00
Ramkumar Ramachandra 070bad6d0c t3510 (cherry-pick-sequence): add missing '&&'
Breaks in a test assertion's && chain can potentially hide failures
from earlier commands in the chain.  Fix an instance of this in the
setup.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-04 15:35:22 -07:00
Ramkumar Ramachandra bf71009e53 t3502, t3510: clarify cherry-pick -m failure
The "cherry-pick persists opts correctly" test in t3510
(cherry-pick-sequence) can cause some confusion, because the command
actually has two points of failure:

1. "-m 1" is specified on the command-line despite the base commit
   "initial" not being a merge-commit.
2. The revision range indicates that there will be a conflict that
   needs to be resolved.

Although the former error is trapped, and cherry-pick die()s with the
exit status 128, the reader may be distracted by the latter.  Fix this
by changing the revision range to something that wouldn't cause a
conflict.  Additionally, explicitly check the exit code in
"cherry-pick a non-merge with -m should fail" in t3502
(cherry-pick-merge) to reassure the reader that this failure has
nothing to do with the sequencer itself.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 13:20:19 -08:00
Ramkumar Ramachandra c6b7c7f305 t3510 (cherry-pick-sequencer): use exit status
All the tests asserting failure use 'test_must_fail', which simply
checks for a non-zero exit status, potentially hiding underlying bugs.
So, replace instances of 'test_must_fail' with 'test_expect_code' to
check the exit status explicitly, where appropriate.

Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 13:19:21 -08:00
Ramkumar Ramachandra 0db76962d1 revert: tolerate extra spaces, tabs in insn sheet
Tolerate extra spaces and tabs as part of the the field separator in
'.git/sequencer/todo', for people with fat fingers.

Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 13:15:46 -08:00
Ramkumar Ramachandra 6bc1a235b1 revert: make commit subjects in insn sheet optional
Change the instruction sheet format subtly so that the subject of the
commit message that follows the object name is optional.  As a result,
an instruction sheet like this is now perfectly valid:

  pick 35b0426
  pick fbd5bbcbc2e
  pick 7362160f

While at it, also fix a bug introduced by 5a5d80f4 (revert: Introduce
--continue to continue the operation, 2011-08-04) that failed to read
lines that are too long to fit on the commit-id-shaped buffer we
currently use; eliminate the need for the buffer altogether.  In
addition to literal SHA-1 hexes, you can now safely use expressions
like the following in the instruction sheet:

  featurebranch~4
  rr/revert-cherry-pick-continue^2~12@{12 days ago}

[jc: simplify parsing]

Suggested-by: Jonathan Nieder <jrnieder@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 13:14:49 -08:00
Jonathan Nieder a7eff1e027 Revert "reset: Make reset remove the sequencer state"
This reverts commit 95eb88d8ee, which
was a UI experiment that did not reflect how "git reset" actually gets
used.  The reversion also fixes a test, indicated in the patch.

Encouraged-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:33:53 -08:00
Jonathan Nieder 218b65fbf9 revert: do not remove state until sequence is finished
As v1.7.8-rc0~141^2~4 (2011-08-04) explains, git cherry-pick removes
the sequencer state just before applying the final patch.  In the
single-pick case, that was a good thing, since --abort and --continue
work fine without access to such state and removing it provides a
signal that git should not complain about the need to clobber it ("a
cherry-pick or revert is already in progress") in sequences like the
following:

	git cherry-pick foo
	git read-tree -m -u HEAD; # forget that; let's try a different one
	git cherry-pick bar

After the recent patch "allow single-pick in the middle of cherry-pick
sequence" we don't need that hack any more.  In the new regime, a
traditional "git cherry-pick <commit>" command never looks at
.git/sequencer, so we do not need to cripple "git cherry-pick
<commit>..<commit>" for it any more.

So now you can run "git cherry-pick --abort" near the end of a
multi-pick sequence and it will abort the entire sequence, instead of
misbehaving and aborting just the final commit.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:33:53 -08:00
Jonathan Nieder 7acaaac275 revert: allow single-pick in the middle of cherry-pick sequence
After messing up a difficult conflict resolution in the middle of a
cherry-pick sequence, it can be useful to be able to

	git checkout HEAD . && git cherry-pick that-one-commit

to restart the conflict resolution. The current code however errors out
saying that another cherry-pick is already in progress.

Suggested-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:32:16 -08:00
Jonathan Nieder 7f13334e07 revert: pass around rev-list args in already-parsed form
Since 7e2bfd3f (revert: allow cherry-picking more than one commit,
2010-07-02), the pick/revert machinery has kept track of the set of
commits to be cherry-picked or reverted using commit_argc and
commit_argv variables, storing the corresponding command-line
parameters.

Future callers as other commands are built in (am, rebase, sequencer)
may find it easier to pass rev-list options to this machinery in
already-parsed form.  Teach cmd_cherry_pick and cmd_revert to parse
the rev-list arguments in advance and pass the commit set to
pick_revisions() as a rev_info structure.

Original patch by Jonathan, tweaks and test from Ram.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Improved-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:32:16 -08:00
Jonathan Nieder 093a309136 revert: allow cherry-pick --continue to commit before resuming
When "git cherry-pick ..bar" encounters conflicts, permit the operator
to use cherry-pick --continue after resolving them as a shortcut for
"git commit && git cherry-pick --continue" to record the resolution
and carry on with the rest of the sequence.

This improves the analogy with "git rebase" (in olden days --continue
was the way to preserve authorship when a rebase encountered
conflicts) and fits well with a general UI goal of making "git cmd
--continue" save humans the trouble of deciding what to do next.

Example: after encountering a conflict from running "git cherry-pick
foo bar baz":

	CONFLICT (content): Merge conflict in main.c
	error: could not apply f78a8d98c... bar!
	hint: after resolving the conflicts, mark the corrected paths
	hint: with 'git add <paths>' or 'git rm <paths>'
	hint: and commit the result with 'git commit'

We edit main.c to resolve the conflict, mark it acceptable with "git
add main.c", and can run "cherry-pick --continue" to resume the
sequence.

	$ git cherry-pick --continue
	[editor opens to confirm commit message]
	[master 78c8a8c98] bar!
	 1 files changed, 1 insertions(+), 1 deletions(-)
	[master 87ca8798c] baz!
	 1 files changed, 1 insertions(+), 1 deletions(-)

This is done for both codepaths to pick multiple commits and a single
commit.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:31:32 -08:00
Jonathan Nieder c427b211b3 revert: remove --reset compatibility option
Remove the "git cherry-pick --reset" option, which has a different
preferred spelling nowadays ("--quit").  Luckily the old --reset name
was not around long enough for anyone to get used to it.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 18:18:02 -08:00
Jonathan Nieder 539047c19e revert: introduce --abort to cancel a failed cherry-pick
After running some ill-advised command like "git cherry-pick
HEAD..linux-next", the bewildered novice may want to return to more
familiar territory.  Introduce a "git cherry-pick --abort" command
that rolls back the entire cherry-pick sequence and places the
repository back on solid ground.

Just like "git merge --abort", this internally uses "git reset
--merge", so local changes not involved in the conflict resolution are
preserved.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 18:16:59 -08:00
Jonathan Nieder f80a87262a revert: rename --reset option to --quit
The option to "git cherry-pick" and "git revert" to discard the
sequencer state introduced by v1.7.8-rc0~141^2~6 (revert: Introduce
--reset to remove sequencer state, 2011-08-04) has a confusing name.
Change it now, while we still have the time.

The new name for "cherry-pick, please get out of my way, since I've
long forgotten about the sequence of commits I was cherry-picking when
you wrote that old .git/sequencer directory" is --quit.  Mnemonic:
this is analagous to quiting a program the user is no longer using ---
we just want to get out of the multiple-command cherry-pick procedure
and not to reset HEAD or rewind any other old state.

The "--reset" option is kept as a synonym to minimize the impact.  We
might consider dropping it for simplicity in a separate patch, though.

Adjust documentation and tests to use the newly preferred name (--quit)
instead of --reset.  While at it, let's clarify the short descriptions
of these operations in "-h" output.

Before:

	--reset		forget the current operation
	--continue	continue the current operation

After:

	--quit		end revert or cherry-pick sequence
	--continue	resume revert or cherry-pick sequence

Noticed-by: Phil Hord <phil.hord@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 13:30:35 -08:00
Ramkumar Ramachandra 5a5d80f4ca revert: Introduce --continue to continue the operation
Introduce a new "git cherry-pick --continue" command which uses the
information in ".git/sequencer" to continue a cherry-pick that stopped
because of a conflict or other error.  It works by dropping the first
instruction from .git/sequencer/todo and performing the remaining
cherry-picks listed there, with options (think "-s" and "-X") from the
initial command listed in ".git/sequencer/opts".

So now you can do:

  $ git cherry-pick -Xpatience foo..bar
  ... description conflict in commit moo ...
  $ git cherry-pick --continue
  error: 'cherry-pick' is not possible because you have unmerged files.
  fatal: failed to resume cherry-pick
  $ echo resolved >conflictingfile
  $ git add conflictingfile && git commit
  $ git cherry-pick --continue; # resumes with the commit after "moo"

During the "git commit" stage, CHERRY_PICK_HEAD will aid by providing
the commit message from the conflicting "moo" commit.  Note that the
cherry-pick mechanism has no control at this stage, so the user is
free to violate anything that was specified during the first
cherry-pick invocation.  For example, if "-x" was specified during the
first cherry-pick invocation, the user is free to edit out the message
during commit time.  Note that the "--signoff" option specified at
cherry-pick invocation time is not reflected in the commit message
provided by CHERRY_PICK_HEAD; the user must take care to add
"--signoff" during the "git commit" invocation.

Helped-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-08 09:28:24 -07:00
Ramkumar Ramachandra 21afd08062 revert: Don't implicitly stomp pending sequencer operation
Protect the user from forgetting about a pending sequencer operation
by immediately erroring out when an existing cherry-pick or revert
operation is in progress like:

  $ git cherry-pick foo
  ... conflict ...
  $ git cherry-pick moo
  error: .git/sequencer already exists
  hint: A cherry-pick or revert is in progress
  hint: Use --reset to forget about it
  fatal: cherry-pick failed

A naive version of this would break the following established ways of
working:

  $ git cherry-pick foo
  ... conflict ...
  $ git reset --hard  # I actually meant "moo" when I said "foo"
  $ git cherry-pick moo

  $ git cherry-pick foo
  ... conflict ...
  $ git commit # commit the resolution
  $ git cherry-pick moo # New operation

However, the previous patches "reset: Make reset remove the sequencer
state" and "revert: Remove sequencer state when no commits are
pending" make sure that this does not happen.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-08 09:24:51 -07:00
Ramkumar Ramachandra 2d27daa91d revert: Remove sequencer state when no commits are pending
When cherry-pick or revert is called on a list of commits, and a
conflict encountered somewhere in the middle, the data in
".git/sequencer" is required to continue the operation.  However, when
a conflict is encountered in the very last commit, the user will have
to "continue" after resolving the conflict and committing just so that
the sequencer state is removed.  This is how the current "rebase -i"
script works as well.

  $ git cherry-pick foo..bar
  ... conflict encountered while picking "bar" ...
  $ echo "resolved" >problematicfile
  $ git add problematicfile
  $ git commit
  $ git cherry-pick --continue # This would be a no-op

Change this so that the sequencer state is cleared when a conflict is
encountered in the last commit.  Incidentally, this patch makes sure
that some existing tests don't break when features like "--reset" and
"--continue" are implemented later in the series.

A better way to implement this feature is to get the last "git commit"
to remove the sequencer state.  However, that requires tighter
coupling between "git commit" and the sequencer, a goal that can be
pursued once the sequencer is made more general.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-08 09:24:50 -07:00
Ramkumar Ramachandra 26ae337be1 revert: Introduce --reset to remove sequencer state
To explicitly remove the sequencer state for a fresh cherry-pick or
revert invocation, introduce a new subcommand called "--reset" to
remove the sequencer state.

Take the opportunity to publicly expose the sequencer paths, and a
generic function called "remove_sequencer_state" that various git
programs can use to remove the sequencer state in a uniform manner;
"git reset" uses it later in this series.  Introducing this public API
is also in line with our long-term goal of eventually factoring out
functions from revert.c into a generic commit sequencer.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:41:21 -07:00
Ramkumar Ramachandra 6f0322633b revert: Save command-line options for continuing operation
In the same spirit as ".git/sequencer/head" and ".git/sequencer/todo",
introduce ".git/sequencer/opts" to persist the replay_opts structure
for continuing after a conflict resolution.  Use the gitconfig format
for this file so that it looks like:

  [options]
	  signoff = true
	  record-origin = true
	  mainline = 1
	  strategy = recursive
	  strategy-option = patience
	  strategy-option = ours

Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Helped-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:40:44 -07:00
Ramkumar Ramachandra 04d3d3cfc4 revert: Save data for continuing after conflict resolution
Ever since v1.7.2-rc1~4^2~7 (revert: allow cherry-picking more than
one commit, 2010-06-02), a single invocation of "git cherry-pick" or
"git revert" can perform picks of several individual commits.  To
implement features like "--continue" to continue the whole operation,
we will need to store some information about the state and the plan at
the beginning.  Introduce a ".git/sequencer/head" file to store this
state, and ".git/sequencer/todo" file to store the plan.  The head
file contains the SHA-1 of the HEAD before the start of the operation,
and the todo file contains an instruction sheet whose format is
inspired by the format of the "rebase -i" instruction sheet.  As a
result, a typical todo file looks like:

  pick 8537f0e submodule add: test failure when url is not configured
  pick 4d68932 submodule add: allow relative repository path
  pick f22a17e submodule add: clean up duplicated code
  pick 59a5775 make copy_ref globally available

Since SHA-1 hex is abbreviated using an find_unique_abbrev(), it is
unambiguous.  This does not guarantee that there will be no ambiguity
when more objects are added to the repository.

These two files alone are not enough to implement a "--continue" that
remembers the command-line options specified; later patches in the
series save them too.

These new files are unrelated to the existing .git/CHERRY_PICK_HEAD,
which will still be useful while committing after a conflict
resolution.

Inspired-by: Christian Couder <chriscool@tuxfamily.org>
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-04 15:40:44 -07:00