When rebasing against an upstream that has had many commits since the
original branch was created:
O -- O -- ... -- O -- O (upstream)
\
-- O (my-dev-branch)
it must read the contents of every novel upstream commit, in addition to
the tip of the upstream and the merge base, because "git rebase"
attempts to exclude commits that are duplicates of upstream ones. This
can be a significant performance hit, especially in a partial clone,
wherein a read of an object may end up being a fetch.
Add a flag to "git rebase" to allow suppression of this feature. This
flag only works when using the "merge" backend.
This flag changes the behavior of sequencer_make_script(), called from
do_interactive_rebase() <- run_rebase_interactive() <-
run_specific_rebase() <- cmd_rebase(). With this flag, limit_list()
(indirectly called from sequencer_make_script() through
prepare_revision_walk()) will no longer call cherry_pick_list(), and
thus PATCHSAME is no longer set. Refraining from setting PATCHSAME both
means that the intermediate commits in upstream are no longer read (as
shown by the test) and means that no PATCHSAME-caused skipping of
commits is done by sequencer_make_script(), either directly or through
make_script_with_merges().
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit d48e5e21da ("rebase (interactive-backend): make --keep-empty the
default", 2020-02-15) turned --keep-empty (for keeping commits which
start empty) into the default. The logic underpinning that commit was:
1) 'git commit' errors out on the creation of empty commits without an
override flag
2) Once someone determines that the override is worthwhile, it's
annoying and/or harmful to required them to take extra steps in
order to keep such commits around (and to repeat such steps with
every rebase).
While the logic on which the decision was made is sound, the result was
a bit of an overcorrection. Instead of jumping to having --keep-empty
being the default, it jumped to making --keep-empty the only available
behavior. There was a simple workaround, though, which was thought to
be good enough at the time. People could still drop commits which
started empty the same way the could drop any commits: by firing up an
interactive rebase and picking out the commits they didn't want from the
list. However, there are cases where external tools might create enough
empty commits that picking all of them out is painful. As such, having
a flag to automatically remove start-empty commits may be beneficial.
Provide users a way to drop commits which start empty using a flag that
existed for years: --no-keep-empty. Interpret --keep-empty as
countermanding any previous --no-keep-empty, but otherwise leaving
--keep-empty as the default.
This might lead to some slight weirdness since commands like
git rebase --empty=drop --keep-empty
git rebase --empty=keep --no-keep-empty
look really weird despite making perfect sense (the first will drop
commits which become empty, but keep commits that started empty; the
second will keep commits which become empty, but drop commits which
started empty). However, --no-keep-empty was named years ago and we are
predominantly keeping it for backward compatibility; also we suspect it
will only be used rarely since folks already have a simple way to drop
commits they don't want with an interactive rebase.
Reported-by: Bryan Turner <bturner@atlassian.com>
Reported-by: Sami Boukortt <sami@boukortt.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While many users who intentionally create empty commits do not want them
thrown away by a rebase, there are third-party tools that generate empty
commits that a user might not want. In the past, users have used rebase
to get rid of such commits (a side-effect of the fact that the --apply
backend is not currently capable of keeping them). While such users
could fire up an interactive rebase and just remove the lines
corresponding to empty commits, that might be difficult if the
third-party tool generates many of them. Simplify this task for users
by marking such lines with a suffix of " # empty" in the todo list.
Suggested-by: Sami Boukortt <sami@boukortt.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Split apply_save_autostash() into apply_autostash_oid() and
apply_save_autostash() where the former operates on an OID string and
the latter reads the OID from a file before passing it into
apply_save_autostash_oid().
This function is required for a future commmit which will rely on being
able to apply an autostash whose OID is stored as a string.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Extract common functionality of apply_autostash() into
apply_save_autostash() and use it to implement save_autostash(). This
function will be used in a future commit.
The difference between save_autostash() and apply_autostash() is that
the former does not try to apply the stash. It skips that step and
just stores the created entry in the stash reflog.
This is useful in the case where we abort an operation when an autostash
is present but we don't want to dirty the worktree with the application
of the stash. For example, in a future commit, we will implement
`git merge --autostash`. Since merges can be aborted using
`git reset --hard`, we'd make use of save_autostash() to save the
autostash entry instead of applying it to the worktree thus keeping the
worktree undirtied.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Explicitly remove autostash file in apply_autostash() once it has been
applied successfully.
This is currently a no-op because the only users of this function will unlink
the state (including the autostash file) after this function runs.
However, in the future, we will introduce a user of the function that
does not explicitly remove the state so we do it here.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Lib-ify the autostash code by extracting perform_autostash() from rebase
into sequencer. In a future commit, this will be used to implement
`--autostash` in other builtins.
This patch is best viewed with `--color-moved`.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The apply_autostash() function in builtin/rebase.c is similar enough to
the apply_autostash() function in sequencer.c that they are almost
interchangeable, except for the type of arg they accept. Make the
sequencer.c version extern and use it in rebase.
The rebase version was introduced in 6defce2b02 (builtin rebase: support
`--autostash` option, 2018-09-04) as part of the shell to C conversion.
It opted to duplicate the function because, at the time, there was
another in-progress project converting interactive rebase from shell to
C as well and they did not want to clash with them by refactoring
sequencer.c version of apply_autostash(). Since both efforts are long
done, we can freely combine them together now.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The preferred terminology is to refer to object identifiers as "OIDs".
Rename the `stash_sha1` variable to `stash_oid` in order to conform to
this.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In order to make apply_autostash() more generic for future extraction, make
it accept a `path` argument so that the location from where to read the
reference to the autostash commit can be customized. Remove the `opts`
argument since it was unused before anyway.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function read_oneliner() is a generally useful util function.
Instead of hiding it as a static function within sequencer.c, extern it
so that it can be reused by others.
This patch is best viewed with --color-moved.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the future, we plan on externing read_oneliner(). Future users of
read_oneliner() will want the ability to output warnings in the event
that the `path` doesn't exist. Introduce the
`READ_ONELINER_WARN_MISSING` flag which, if active, would issue a
warning when a file doesn't exist by always executing warning_errno()
in the case where strbuf_read_file() fails.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In a future commit, we will need read_oneliner() to accept flags other
than just `skip_if_empty`. Instead of having an argument for each flag,
teach read_oneliner() to accept the bitfield `flags` instead. For now,
only recognize the `READ_ONELINER_SKIP_IF_EMPTY` flag. More flags will
be added in a future commit.
The result of this is that parallel topics which introduce invocations
of read_oneliner() will still be compatible with this new function
signature since, instead of passing 1 or 0 for `skip_if_empty`, they'll
be passing 1 or 0 to `flags`, which gives equivalent behavior.
Mechanically fix up invocations of read_oneliner() with the following
spatch
@@
expression a, b;
@@
read_oneliner(a, b,
- 1
+ READ_ONELINER_SKIP_IF_EMPTY
)
and manually break up long lines in the result.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We currently check whether a file exists and return early before reading
the file. Instead of accessing the file twice, always read the file and
check `errno` to see if the file doesn't exist.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There is a lot of code to honor GIT_REFLOG_ACTION throughout git,
including some in sequencer.c; unfortunately, reflog_message() and its
callers ignored it. Instruct reflog_message() to check the existing
environment variable, and use it when present as an override to
action_name().
Also restructure pick_commits() to only temporarily modify
GIT_REFLOG_ACTION for a short duration and then restore the old value,
so that when we do this setting within a loop we do not keep adding "
(pick)" substrings and end up with a reflog message of the form
rebase (pick) (pick) (pick) (finish): returning to refs/heads/master
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In read_populate_opts(), we call read_oneliner() _after_ calling
strbuf_release(). This means that `buf` is leaked at the end of the
function.
Always clean up the strbuf by going to `done_rebase_i` whether or not
we return an error.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
{cherry-pick,revert} --edit hasn't honoured --no-gpg-sign yet.
Pass this option down to git-commit to honour it.
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When the sequencer is requested to abbreviate commands, it will replace
those that do not have a short form (eg. `noop') by a comment mark.
`noop' serves no purpose, except when fast-forwarding (ie. by running
`git rebase'). Removing it will break this command when
`rebase.abbreviateCommands' is set to true.
Teach todo_list_to_strbuf() to check if a command has an actual
short form, and to ignore it if not.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Provide more information (e.g. the object of the tree-ish in which
the blob being converted appears, in addition to its path, which
has already been given) to smudge/clean conversion filters.
* bc/filter-process:
t0021: test filter metadata for additional cases
builtin/reset: compute checkout metadata for reset
builtin/rebase: compute checkout metadata for rebases
builtin/clone: compute checkout metadata for clones
builtin/checkout: compute checkout metadata for checkouts
convert: provide additional metadata to filters
convert: permit passing additional metadata to filter processes
builtin/checkout: pass branch info down to checkout_worktree
SHA-256 transition continues.
* bc/sha-256-part-1-of-4: (22 commits)
fast-import: add options for rewriting submodules
fast-import: add a generic function to iterate over marks
fast-import: make find_marks work on any mark set
fast-import: add helper function for inserting mark object entries
fast-import: permit reading multiple marks files
commit: use expected signature header for SHA-256
worktree: allow repository version 1
init-db: move writing repo version into a function
builtin/init-db: add environment variable for new repo hash
builtin/init-db: allow specifying hash algorithm on command line
setup: allow check_repository_format to read repository format
t/helper: make repository tests hash independent
t/helper: initialize repository if necessary
t/helper/test-dump-split-index: initialize git repository
t6300: make hash algorithm independent
t6300: abstract away SHA-1-specific constants
t: use hash-specific lookup tables to define test constants
repository: require a build flag to use SHA-256
hex: add functions to parse hex object IDs in any algorithm
hex: introduce parsing variants taking hash algorithms
...
The mechanism to prevent "git commit" from making an empty commit
or amending during an interrupted cherry-pick was broken during the
rewrite of "git rebase" in C, which has been corrected.
* pw/advise-rebase-skip:
commit: give correct advice for empty commit during a rebase
commit: encapsulate determine_whence() for sequencer
commit: use enum value for multiple cherry-picks
sequencer: write CHERRY_PICK_HEAD for reword and edit
cherry-pick: check commit error messages
cherry-pick: add test for `--skip` advice in `git commit`
t3404: use test_cmp_rev
Band-aid fixes for two fallouts from switching the default "rebase"
backend.
* en/rebase-backend:
git-rebase.txt: highlight backend differences with commit rewording
sequencer: clear state upon dropping a become-empty commit
i18n: unmark a message in rebase.c
In commit e98c4269c8 ("rebase (interactive-backend): fix handling of
commits that become empty", 2020-02-15), the merge backend was changed
to drop commits that did not start empty but became so after being
applied (because their changes were a subset of what was already
upstream). This new code path did not need to go through the process of
creating a commit, since we were dropping the commit instead.
Unfortunately, this also means we bypassed the clearing of the
CHERRY_PICK_HEAD and MERGE_MSG files, which if there were no further
commits to cherry-pick would mean that the rebase would end but assume
there was still an operation in progress. Ensure that we clear such
state files when we decide to drop the commit.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase" has learned to use the merge backend (i.e. the
machinery that drives "rebase -i") by default, while allowing
"--apply" option to use the "apply" backend (e.g. the moral
equivalent of "format-patch piped to am"). The rebase.backend
configuration variable can be set to customize.
* en/rebase-backend:
rebase: rename the two primary rebase backends
rebase: change the default backend from "am" to "merge"
rebase: make the backend configurable via config setting
rebase tests: repeat some tests using the merge backend instead of am
rebase tests: mark tests specific to the am-backend with --am
rebase: drop '-i' from the reflog for interactive-based rebases
git-prompt: change the prompt for interactive-based rebases
rebase: add an --am option
rebase: move incompatibility checks between backend options a bit earlier
git-rebase.txt: add more details about behavioral differences of backends
rebase: allow more types of rebases to fast-forward
t3432: make these tests work with either am or merge backends
rebase: fix handling of restrict_revision
rebase: make sure to pass along the quiet flag to the sequencer
rebase, sequencer: remove the broken GIT_QUIET handling
t3406: simplify an already simple test
rebase (interactive-backend): fix handling of commits that become empty
rebase (interactive-backend): make --keep-empty the default
t3404: directly test the behavior of interest
git-rebase.txt: update description of --allow-empty-message
The transition plan anticipates that we will allow signatures using
multiple algorithms in a single commit. In order to do so, we need to
use a different header per algorithm so that it will be obvious over
which data to compute the signature.
The transition plan specifies that we should use "gpgsig-sha256", so
wire up the commit code such that it can write and parse the current
algorithm, and it can remove the headers for any algorithm when creating
a new commit. Add tests to ensure that we write using the right header
and that git fsck doesn't reject these commits.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A large variety of rebase types are supported by the interactive
machinery, not just the explicitly interactive ones. These all share
the same code and write the same reflog messages, but the "-i" moniker
in those messages doesn't really have much meaning. It also becomes
somewhat distracting once we switch the default from the am-backend to
the interactive one. Just remove the "-i" from these messages.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The GIT_QUIET environment variable was used to signal the non-am
backends that the rebase should perform quietly. The preserve-merges
backend does not make use of the quiet flag anywhere (other than to
write out its state whenever it writes state), and this mechanism was
broken in the conversion from shell to C. Since this environment
variable was specifically designed for scripts and the only backend that
would still use it is no longer a script, just gut this code.
A subsequent commit will fix --quiet for the interactive/merge backend
in a different way.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As established in the previous commit and commit b00bf1c9a8
(git-rebase: make --allow-empty-message the default, 2018-06-27), the
behavior for rebase with different backends in various edge or corner
cases is often more happenstance than design. This commit addresses
another such corner case: commits which "become empty".
A careful reader may note that there are two types of commits which would
become empty due to a rebase:
* [clean cherry-pick] Commits which are clean cherry-picks of upstream
commits, as determined by `git log --cherry-mark ...`. Re-applying
these commits would result in an empty set of changes and a
duplicative commit message; i.e. these are commits that have
"already been applied" upstream.
* [become empty] Commits which are not empty to start, are not clean
cherry-picks of upstream commits, but which still become empty after
being rebased. This happens e.g. when a commit has changes which
are a strict subset of the changes in an upstream commit, or when
the changes of a commit can be found spread across or among several
upstream commits.
Clearly, in both cases the changes in the commit in question are found
upstream already, but the commit message may not be in the latter case.
When cherry-mark can determine a commit is already upstream, then
because of how cherry-mark works this means the upstream commit message
was about the *exact* same set of changes. Thus, the commit messages
can be assumed to be fully interchangeable (and are in fact likely to be
completely identical). As such, the clean cherry-pick case represents a
case when there is no information to be gained by keeping the extra
commit around. All rebase types have always dropped these commits, and
no one to my knowledge has ever requested that we do otherwise.
For many of the become empty cases (and likely even most), we will also
be able to drop the commit without loss of information -- but this isn't
quite always the case. Since these commits represent cases that were
not clean cherry-picks, there is no upstream commit message explaining
the same set of changes. Projects with good commit message hygiene will
likely have the explanation from our commit message contained within or
spread among the relevant upstream commits, but not all projects run
that way. As such, the commit message of the commit being rebased may
have reasoning that suggests additional changes that should be made to
adapt to the new base, or it may have information that someone wants to
add as a note to another commit, or perhaps someone even wants to create
an empty commit with the commit message as-is.
Junio commented on the "become-empty" types of commits as follows[1]:
WRT a change that ends up being empty (as opposed to a change that
is empty from the beginning), I'd think that the current behaviour
is desireable one. "am" based rebase is solely to transplant an
existing history and want to stop much less than "interactive" one
whose purpose is to polish a series before making it publishable,
and asking for confirmation ("this has become empty--do you want to
drop it?") is more appropriate from the workflow point of view.
[1] https://lore.kernel.org/git/xmqqfu1fswdh.fsf@gitster-ct.c.googlers.com/
I would simply add that his arguments for "am"-based rebases actually
apply to all non-explicitly-interactive rebases. Also, since we are
stating that different cases should have different defaults, it may be
worth providing a flag to allow users to select which behavior they want
for these commits.
Introduce a new command line flag for selecting the desired behavior:
--empty={drop,keep,ask}
with the definitions:
drop: drop commits which become empty
keep: keep commits which become empty
ask: provide the user a chance to interact and pick what to do with
commits which become empty on a case-by-case basis
In line with Junio's suggestion, if the --empty flag is not specified,
pick defaults as follows:
explicitly interactive: ask
otherwise: drop
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Different rebase backends have different treatment for commits which
start empty (i.e. have no changes relative to their parent), and the
--keep-empty option was added at some point to allow adjusting behavior.
The handling of commits which start empty is actually quite similar to
commit b00bf1c9a8 (git-rebase: make --allow-empty-message the default,
2018-06-27), which pointed out that the behavior for various backends is
often more happenstance than design. The specific change made in that
commit is actually quite relevant as well and much of the logic there
directly applies here.
It makes a lot of sense in 'git commit' to error out on the creation of
empty commits, unless an override flag is provided. However, once
someone determines that there is a rare case that merits using the
manual override to create such a commit, it is somewhere between
annoying and harmful to have to take extra steps to keep such
intentional commits around. Granted, empty commits are quite rare,
which is why handling of them doesn't get considered much and folks tend
to defer to existing (accidental) behavior and assume there was a reason
for it, leading them to just add flags (--keep-empty in this case) that
allow them to override the bad defaults. Fix the interactive backend so
that --keep-empty is the default, much like we did with
--allow-empty-message. The am backend should also be fixed to have
--keep-empty semantics for commits that start empty, but that is not
included in this patch other than a testcase documenting the failure.
Note that there was one test in t3421 which appears to have been written
expecting --keep-empty to not be the default as correct behavior. This
test was introduced in commit 00b8be5a4d ("add tests for rebasing of
empty commits", 2013-06-06), which was part of a series focusing on
rebase topology and which had an interesting original cover letter at
https://lore.kernel.org/git/1347949878-12578-1-git-send-email-martinvonz@gmail.com/
which noted
Your input especially appreciated on whether you agree with the
intent of the test cases.
and then went into a long example about how one of the many tests added
had several questions about whether it was correct. As such, I believe
most the tests in that series were about testing rebase topology with as
many different flags as possible and were not trying to state in general
how those flags should behave otherwise.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow the rebase.missingCommitsCheck configuration to kick in when
"rebase --edit-todo" and "rebase --continue" restarts the procedure.
* ag/edit-todo-drop-check:
rebase-interactive: warn if commit is dropped with `rebase --edit-todo'
sequencer: move check_todo_list_from_file() to rebase-interactive.c
"git rebase -i" (and friends) used to unnecessarily check out the
tip of the branch to be rebased, which has been corrected.
* ag/rebase-avoid-unneeded-checkout:
rebase -i: stop checking out the tip of the branch to rebase
"git rebase -i" identifies existing commits in its todo file with
their abbreviated object name, which could become ambigous as it
goes to create new commits, and has a mechanism to avoid ambiguity
in the main part of its execution. A few other cases however were
not covered by the protection against ambiguity, which has been
corrected.
* js/rebase-i-with-colliding-hash:
rebase -i: also avoid SHA-1 collisions with missingCommitsCheck
rebase -i: re-fix short SHA-1 collision
parse_insn_line(): improve error message when parsing failed
The Undefined Behavior Sanitizer in clang-11 seems to have learned a new
trick: it complains about computing offsets from a NULL pointer, even if
that offset is 0. This causes numerous test failures. For example, from
t1090:
unpack-trees.c:1355:41: runtime error: applying zero offset to null pointer
...
not ok 6 - in partial clone, sparse checkout only fetches needed blobs
The code in question looks like this:
struct cache_entry **cache_end = cache + nr;
...
while (cache != cache_end)
and we sometimes pass in a NULL and 0 for "cache" and "nr". This is
conceptually fine, as "cache_end" would be equal to "cache" in this
case, and we wouldn't enter the loop at all. But computing even a zero
offset violates the C standard. And given the fact that UBSan is
noticing this behavior, this might be a potential problem spot if the
compiler starts making unexpected assumptions based on undefined
behavior.
So let's just avoid it, which is pretty easy. In some cases we can just
switch to iterating with a numeric index (as we do in sequencer.c here).
In other cases (like the cache_end one) the use of an end pointer is
more natural; we can keep that by just explicitly checking for the
NULL/0 case when assigning the end pointer.
Note that there are two ways you can write this latter case, checking
for the pointer:
cache_end = cache ? cache + nr : cache;
or the size:
cache_end = nr ? cache + nr : cache;
For the case of a NULL/0 ptr/len combo, they are equivalent. But writing
it the second way (as this patch does) has the property that if somebody
were to incorrectly pass a NULL pointer with a non-zero length, we'd
continue to notice and segfault, rather than silently pretending the
length was zero.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When set to "warn" or "error", `rebase.missingCommitsCheck' would make
`rebase -i' warn if the user removed commits from the todo list to
prevent mistakes. Unfortunately, `rebase --edit-todo' and `rebase
--continue' don't take it into account.
This adds the ability for `rebase --edit-todo' and `rebase --continue'
to check if commits were dropped by the user. As both edit_todo_list()
and complete_action() parse the todo list and check for dropped commits,
the code doing so in the latter is removed to reduce duplication.
`edit_todo_list_advice' is removed from sequencer.c as it is no longer
used there.
This changes when a backup of the todo list is made. Until now, it was
saved only once, before the initial edit. Now, it is also made if the
original todo list has no errors or no dropped commits. Thus, the
backup should be error-free. Without this, sequencer_continue()
(`rebase --continue') could only compare the current todo list against
the original, unedited list. Before this change, this file was only
used by edit_todo_list() and `rebase -p' to create the backup before
the initial edit, and check_todo_list_from_file(), only used by
`rebase -p' to check for dropped commits after its own initial edit.
If the edited list has an error, a file, `dropped', is created to
report the issue. Otherwise, it is deleted. Usually, the edited list
is compared against the list before editing, but if this file exists,
it will be compared to the backup. Also, if the file exists,
sequencer_continue() checks the list for dropped commits. If the
check was performed every time, it would fail when resuming a rebase
after resolving a conflict, as the backup will contain commits that
were picked, but they will not be in the new list. It's safe to
ignore this check if `dropped' does not exist, because that means that
no errors were found at the last edition, so any missing commits here
have already been picked.
Five tests are added to t3404. The tests for
`rebase.missingCommitsCheck = warn' and `rebase.missingCommitsCheck =
error' have a similar structure. First, we start a rebase with an
incorrect command on the first line. Then, we edit the todo list,
removing the first and the last lines. This demonstrates that
`--edit-todo' notices dropped commits, but not when the command is
incorrect. Then, we restore the original todo list, and edit it to
remove the last line. This demonstrates that if we add a commit after
the initial edit, then remove it, `--edit-todo' will notice that it
has been dropped. Then, the actual rebase takes place. In the third
test, it is also checked that `--continue' will refuse to resume the
rebase if commits were dropped. The fourth test checks that no errors
are raised when resuming a rebase after resolving a conflict, the fifth
checks that no errors are raised when editing the todo list after
pausing the rebase.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The message contained in `edit_todo_list_advice' (sequencer.c) is
printed after the initial edit of the todo list if it can't be parsed or
if commits were dropped. This is done either in complete_action() for
`rebase -i', or in check_todo_list_from_file() for `rebase -p'.
Since we want to add this check when editing the list, we also want to
use this message from edit_todo_list() (rebase-interactive.c). To this
end, check_todo_list_from_file() is moved to rebase-interactive.c, and
`edit_todo_list_advice' is copied there. In the next commit,
complete_action() will stop using it, and `edit_todo_list_advice' will
be removed from sequencer.c.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
One of the first things done when using a sequencer-based
rebase (ie. `rebase -i', `rebase -r', or `rebase -m') is to make a todo
list. This requires knowledge of the commit range to rebase. To get
the oid of the last commit of the range, the tip of the branch to rebase
is checked out with prepare_branch_to_be_rebased(), then the oid of the
head is read. After this, the tip of the branch is not even modified.
The `am' backend, on the other hand, does not check out the branch.
On big repositories, it's a performance penalty: with `rebase -i', the
user may have to wait before editing the todo list while git is
extracting the branch silently, and "quiet" rebases will be slower than
`am'.
Since we already have the oid of the tip of the branch in
`opts->orig_head', it's useless to switch to this commit.
This removes the call to prepare_branch_to_be_rebased() in
do_interactive_rebase(), and adds a `orig_head' parameter to
get_revision_ranges(). prepare_branch_to_be_rebased() is removed as it
is no longer used.
This introduces a visible change: as we do not switch on the tip of the
branch to rebase, no reflog entry is created at the beginning of the
rebase for it.
Unscientific performance measurements, performed on linux.git, are as
follow:
Before this patch:
$ time git rebase -m --onto v4.18 463fa44eec2fef50~ 463fa44eec2fef50
real 0m8,940s
user 0m6,830s
sys 0m2,121s
After this patch:
$ time git rebase -m --onto v4.18 463fa44eec2fef50~ 463fa44eec2fef50
real 0m1,834s
user 0m0,916s
sys 0m0,206s
Reported-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 66ae9a57b8 (t3404: rebase -i: demonstrate short SHA-1 collision,
2013-08-23), we added a test case that demonstrated how it is possible
that a previously unambiguous short commit ID could become ambiguous
*during* a rebase.
In 75c6976655 (rebase -i: fix short SHA-1 collision, 2013-08-23), we
fixed that problem simply by writing out the todo list with expanded
commit IDs (except *right* before letting the user edit the todo list,
in which case we shorten them, but we expand them right after the file
was edited).
However, the bug resurfaced as a side effect of 393adf7a6f (sequencer:
directly call pick_commits() from complete_action(), 2019-11-24): as of
this commit, the sequencer no longer re-reads the todo list after
writing it out with expanded commit IDs.
The only redeeming factor is that the todo list is already parsed at
that stage, including all the commits corresponding to the commands,
therefore the sequencer can continue even if the internal todo list has
short commit IDs.
That does not prevent problems, though: the sequencer writes out the
`done` and `git-rebase-todo` files incrementally (i.e. overwriting the
todo list with a version that has _short_ commit IDs), and if a merge
conflict happens, or if an `edit` or a `break` command is encountered, a
subsequent `git rebase --continue` _will_ re-read the todo list, opening
an opportunity for the "short SHA-1 collision" bug again.
To avoid that, let's make sure that we do expand the commit IDs in the
todo list as soon as we have parsed it after letting the user edit it.
Additionally, we improve the 'short SHA-1 collide' test case in t3404 to
test specifically for the case where the rebase is resumed. We also
hard-code the expected colliding short SHA-1s, to document the
expectation (and to make it easier on future readers).
Note that we specifically test that the short commit ID is used in the
`git-rebase-todo.tmp` file: this file is created by the fake editor in
the test script and reflects the state that would have been presented to
the user to edit.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the case that a `get_oid()` call failed, we showed some rather bogus
part of the line instead of the precise string we sent to said function.
That makes it rather hard for users to understand what is going wrong,
so let's fix that.
While at it, return a negative value from `parse_insn_line()` in case of
an error, as per our convention. This function's only caller,
`todo_list_parse_insn_buffer()`, cares only whether that return value is
non-zero or not, i.e. does not need to be changed.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This reverts commit 5d9324e0f4, reversing
changes made to c58ae96fc4.
The topic turns out to be too buggy for real use.
cf. <f2fe7437-8a48-3315-4d3f-8d51fe4bb8f1@gmail.com>
Reduce unnecessary reading of state variables back from the disk
during sequencer operation.
* ag/sequencer-todo-updates:
sequencer: directly call pick_commits() from complete_action()
rebase: fill `squash_onto' in get_replay_opts()
sequencer: move the code writing total_nr on the disk to a new function
sequencer: update `done_nr' when skipping commands in a todo list
sequencer: update `total_nr' when adding an item to a todo list
"git rebase -i" learned a few options that are known by "git
rebase" proper.
* ra/rebase-i-more-options:
rebase -i: finishing touches to --reset-author-date
rebase: add --reset-author-date
rebase -i: support --ignore-date
sequencer: rename amend_author to author_to_rename
rebase -i: support --committer-date-is-author-date
sequencer: allow callers of read_author_script() to ignore fields
rebase -i: add --ignore-whitespace flag
While running "revert" or "cherry-pick --edit" for multiple
commits, a recent regression incorrectly detected "nothing to
commit, working tree clean", instead of replaying the commits,
which has been corrected.
* sg/assume-no-todo-update-in-cherry-pick:
sequencer: don't re-read todo for revert and cherry-pick
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.
However, it was overlooked that there are more conditions than just a
`git cherry-pick` when this advice is printed (which originally
suggested the neutral `git reset`): the same can happen during a rebase.
Let's suggest the correct command, even during a rebase.
While at it, we adjust more places in `builtin/commit.c` that
incorrectly assumed that the presence of a `CHERRY_PICK_HEAD` meant that
surely this must be a `cherry-pick` in progress.
Note: we take pains to handle the situation when a user runs a `git
cherry-pick` _during_ a rebase. This is quite valid (e.g. in an `exec`
line in an interactive rebase). On the other hand, it is not possible to
run a rebase during a cherry-pick, meaning: if both `rebase-merge/` and
`sequencer/` exist or CHERRY_PICK_HEAD and REBASE_HEAD point to the same
commit , we still want to advise to use `git cherry-pick --skip`.
Original-patch-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Working out which command wants to create a commit requires detailed
knowledge of the sequencer internals and that knowledge is going to
increase in subsequent commits. With that in mind lets encapsulate that
knowledge in sequencer.c rather than spreading it into builtin/commit.c.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
`git commit` relies on the presence of CHERRY_PICK_HEAD to show the
correct error message in the case of an empty pick. This fixes a
regression introduced by the conversion from shell to C. In the shell
version everything was a cherry-pick as far as the sequencer code was
concerned so it always wrote CHERRY_PICK_HEAD. The conversion to C
forgot to update the code that creates CHERRY_PICK_HEAD. We do not want
to create CHERRY_PICK_HEAD for fixup and squash commands as that would
prevent `git commit --amend` from running.
Note that the error message shown by `git commit` for an empty pick
during a rebase is currently wrong as it talks about running `git
cherry-pick --skip` rather than `git rebase --skip`. This will be fixed
in a future commit which is why the tests are in t3403-rebase-skip.sh.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The sequencer machinery compared the HEAD and the state it is
attempting to commit to decide if the result would be a no-op
commit, even when amending a commit, which was incorrect, and
has been corrected.
* pw/sequencer-compare-with-right-parent-to-check-empty-commits:
sequencer: fix empty commit check when amending
The logic to avoid duplicate label names generated by "git rebase
--rebase-merges" forgot that the machinery itself uses "onto" as a
label name, which must be avoided by auto-generated labels, which
has been corrected.
* dd/rebase-merge-reserves-onto-label:
sequencer: handle rebase-merges for "onto" message
A label used in the todo list that are generated by "git rebase
--rebase-merges" is used as a part of a refname; the logic to come
up with the label has been tightened to avoid names that cannot be
used as such.
* js/rebase-r-safer-label:
rebase -r: let `label` generate safer labels
rebase-merges: move labels' whitespace mangling into `label_oid()`
Handling of commit objects that use non UTF-8 encoding during
"rebase -i" has been improved.
* dd/sequencer-utf8:
sequencer: reencode commit message for am/rebase --show-current-patch
sequencer: reencode old merge-commit message
sequencer: reencode squashing commit's message
sequencer: reencode revert/cherry-pick's todo list
sequencer: reencode to utf-8 before arrange rebase's todo list
t3900: demonstrate git-rebase problem with multi encoding
configure.ac: define ICONV_OMITS_BOM if necessary
t0028: eliminate non-standard usage of printf
Docfix.
* en/doc-typofix:
Fix spelling errors in no-longer-updated-from-upstream modules
multimail: fix a few simple spelling errors
sha1dc: fix trivial comment spelling error
Fix spelling errors in test commands
Fix spelling errors in messages shown to users
Fix spelling errors in names of tests
Fix spelling errors in comments of testcases
Fix spelling errors in code comments
Fix spelling errors in documentation outside of Documentation/
Documentation: fix a bunch of typos, both old and new
When continuing an interactive rebase after a merge conflict was solved,
if the resolution could not be committed, sequencer_continue() would
return early without releasing its todo list, resulting in a memory
leak. This plugs this leak by jumping to the end of the function, where
the todo list is deallocated.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, complete_action(), used by builtin/rebase.c to start a new
rebase, calls sequencer_continue() to do it. Before the former calls
pick_commits(), it
- calls read_and_refresh_cache() -- this is unnecessary here as we've
just called require_clean_work_tree() in complete_action()
- calls read_populate_opts() -- this is unnecessary as we're starting a
new rebase, so `opts' is fully populated
- loads the todo list -- this is unnecessary as we've just populated
the todo list in complete_action()
- commits any staged changes -- this is unnecessary as we're starting a
new rebase, so there are no staged changes
- calls record_in_rewritten() -- this is unnecessary as we're starting
a new rebase.
This changes complete_action() to directly call pick_commits() to avoid
these unnecessary steps.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The total number of commands can be used to show the progression of the
rebasing in a shell. It is written to the disk by read_populate_todo()
when the todo list is loaded from sequencer_continue() or
pick_commits(), but not by complete_action().
This moves the part writing total_nr to a new function so it can be
called from complete_action().
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In a todo list, `done_nr' is the number of commands that were executed
or skipped, but skip_unnecessary_picks() did not update it.
This variable is mostly used by command prompts (ie. git-prompt.sh and
the like). As in the previous commit, this inconsistent behaviour is
not a problem yet, but it would start to matter at the end of this
series the same reason.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
`total_nr' is the total number of items, counting both done and todo,
that are in a todo list. But unlike `nr', it was not updated when an
item was appended to the list.
This variable is mostly used by command prompts (ie. git-prompt.sh and
the like). By forgetting to update it, the original code made it not
reflect the reality, but this flaw was masked by the code calling
unnecessarily read_populate_todo() again to update the variable to its
correct value. At the end of this series, the unnecessary call will be
removed, and the inconsistency addressed by this patch would start to
matter.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When 'git revert' or 'git cherry-pick --edit' is invoked with multiple
commits, then after editing the first commit message is finished both
these commands should continue with processing the second commit and
launch another editor for its commit message, assuming there are
no conflicts, of course.
Alas, this inadvertently changed with commit a47ba3c777 (rebase -i:
check for updated todo after squash and reword, 2019-08-19): after
editing the first commit message is finished, both 'git revert' and
'git cherry-pick --edit' exit with error, claiming that "nothing to
commit, working tree clean".
The reason for the changed behaviour is twofold:
- Prior to a47ba3c777 the up-to-dateness of the todo list file was
only checked after 'exec' instructions, and that commit moved
those checks to the common code path. The intention was that this
check should be performed after instructions spawning an editor
('squash' and 'reword') as well, so the ongoing 'rebase -i'
notices when the user runs a 'git rebase --edit-todo' while
squashing/rewording a commit message.
However, as it happened that check is now performed even after
'revert' and 'pick' instructions when they involved editing the
commit message. And 'revert' by default while 'pick' optionally
(with 'git cherry-pick --edit') involves editing the commit
message.
- When invoking 'git revert' or 'git cherry-pick --edit' with
multiple commits they don't read a todo list file but assemble the
todo list in memory, thus the associated stat data used to check
whether the file has been updated is all zeroed out initially.
Then the sequencer writes all instructions (including the very
first) to the todo file, executes the first 'revert/pick'
instruction, and after the user finished editing the commit
message the changes of a47ba3c777 kick in, and it checks whether
the todo file has been modified. The initial all-zero stat data
obviously differs from the todo file's current stat data, so the
sequencer concludes that the file has been modified. Technically
it is not wrong, of course, because the file just has been written
indeed by the sequencer itself, though the file's contents still
match what the sequencer was invoked with in the beginning.
Consequently, after re-reading the todo file the sequencer
executes the same first instruction _again_, thus ending up in
that "nothing to commit" situation.
The todo list was never meant to be edited during multi-commit 'git
revert' or 'cherry-pick' operations, so perform that "has the todo
file been modified" check only when the sequencer was invoked as part
of an interactive rebase.
Reported-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This fixes a regression introduced in 356ee4659b ("sequencer: try to
commit without forking 'git commit'", 2017-11-24). When amending a
commit try_to_commit() was using the wrong parent when checking if the
commit would be empty. When amending we need to check against HEAD^ not
HEAD.
t3403 may not seem like the natural home for the new tests but a further
patch series will improve the advice printed by `git commit`. That
series will mutate these tests to check that the advice includes
suggesting `rebase --skip` to skip the fixup that would empty the
commit.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In order to work correctly, git-rebase --rebase-merges needs to make
initial todo list with unique labels.
Those unique labels is being handled by employing a hashmap and
appending an unique number if any duplicate is found.
But, we forget that beside those labels for side branches,
we also have a special label `onto' for our so-called new-base.
In a special case that any of those labels for side branches named
`onto', git will run into trouble.
Correct it.
Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `label` todo command in interactive rebases creates temporary refs
in the `refs/rewritten/` namespace. These refs are stored as loose refs,
i.e. as files in `.git/refs/rewritten/`, therefore they have to conform
with file name limitations on the current filesystem in addition to the
accepted ref format.
This poses a problem in particular on NTFS/FAT, where e.g. the colon,
double-quote and pipe characters are disallowed as part of a file name.
Let's safeguard against this by replacing not only white-space
characters by dashes, but all non-alpha-numeric ones.
However, we exempt non-ASCII UTF-8 characters from that, as it should be
quite possible to reflect branch names such as `↯↯↯` in refs/file names.
Signed-off-by: Matthew Rogers <mattr94@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
One of the trickier aspects of the design of `git rebase
--rebase-merges` is the way labels are generated for the initial todo
list: those labels are supposed to be intuitive and first and foremost
unique.
To that end, `label_oid()` appends a unique suffix when necessary.
Those labels not only need to be unique, but they also need to be valid
refs. To make sure of that, `make_script_with_merges()` replaces
whitespace by dashes.
That would appear to be the wrong layer for that sanitizing step,
though: all callers of `label_oid()` should get that same benefit.
Even if it does not make a difference currently (the only called of
`label_oid()` that passes a label that might need to be sanitized _is_
`make_script_with_merges()`), let's move the responsibility for
sanitizing labels into the `label_oid()` function.
This commit is best viewed with `-w` because it unfortunately needs to
change the indentation of a large block of code in `label_oid()`.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The message file will be used as commit message for the
git-{am,rebase} --continue.
Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
During rebasing, old merge's message (encoded in old encoding)
will be used as message for new merge commit (created by rebase).
In case of the value of i18n.commitencoding has been changed after the
old merge time. We will receive an unusable message for this new merge.
Correct it.
This change also notice a breakage with git-rebase label system.
Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
On fixup/squash-ing rebase, git will create new commit in
i18n.commitencoding, reencode the commit message to that said encode.
Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Keep revert/cherry-pick's todo list in line with rebase todo list.
Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
On musl libc, ISO-2022-JP encoder is too eager to switch back to
1 byte encoding, musl's iconv always switch back after every combining
character. Comparing glibc and musl's output for this command
$ sed q t/t3900/ISO-2022-JP.txt| iconv -f ISO-2022-JP -t utf-8 |
iconv -f utf-8 -t ISO-2022-JP | xxd
glibc:
00000000: 1b24 4224 4f24 6c24 5224 5b24 551b 2842 .$B$O$l$R$[$U.(B
00000010: 0a .
musl:
00000000: 1b24 4224 4f1b 2842 1b24 4224 6c1b 2842 .$B$O.(B.$B$l.(B
00000010: 1b24 4224 521b 2842 1b24 4224 5b1b 2842 .$B$R.(B.$B$[.(B
00000020: 1b24 4224 551b 2842 0a .$B$U.(B.
Although musl iconv's output isn't optimal, it's still correct.
From commit 7d509878b8, ("pretty.c: format string with truncate respects
logOutputEncoding", 2014-05-21), we're encoding the message to utf-8
first, then format it and convert the message to the actual output
encoding on git commit --squash.
Thus, t3900::test_commit_autosquash_flags is failing on musl libc.
Reencode to utf-8 before arranging rebase's todo list.
By doing this, we also remove a breakage noticed by a test added in the
previous commit.
Signed-off-by: Doan Tran Cong Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"rebase -i" ceased to run post-commit hook by mistake in an earlier
update, which has been corrected.
* pw/post-commit-from-sequencer:
sequencer: run post-commit hook
move run_commit_hook() to libgit and use it there
sequencer.h fix placement of #endif
t3404: remove uneeded calls to set_fake_editor
t3404: set $EDITOR in subshell
t3404: remove unnecessary subshell
rebase am already has this flag to "lie" about the author date
by changing it to the committer (current) date. Let's add the same
for interactive machinery.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The purpose of amend_author was to free() the malloc()'d string
obtained from get_author() while amending a commit. But we can
also use the variable to free() the author at our convenience.
Rename it to convey this meaning.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
rebase am already has this flag to "lie" about the committer date
by changing it to the author date. Let's add the same for
interactive machinery.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The current callers of the read_author_script() function read name,
email and date from the author script. Allow callers to signal that
they are not interested in some among these three fields by passing
NULL.
Note that fields that are ignored still must exist and be formatted
correctly in the author script.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Prior to commit 356ee4659b ("sequencer: try to commit without forking
'git commit'", 2017-11-24) the sequencer would always run the
post-commit hook after each pick or revert as it forked `git commit` to
create the commit. The conversion to committing without forking `git
commit` omitted to call the post-commit hook after creating the commit.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This function was declared in commit.h but was implemented in
builtin/commit.c so was not part of libgit. Move it to libgit so we can
use it in the sequencer. This simplifies the implementation of
run_prepare_commit_msg_hook() and will be used in the next commit.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The merge-recursive machiery is one of the most complex parts of
the system that accumulated cruft over time. This large series
cleans up the implementation quite a bit.
* en/merge-recursive-cleanup: (26 commits)
merge-recursive: fix the fix to the diff3 common ancestor label
merge-recursive: fix the diff3 common ancestor label for virtual commits
merge-recursive: alphabetize include list
merge-recursive: add sanity checks for relevant merge_options
merge-recursive: rename MERGE_RECURSIVE_* to MERGE_VARIANT_*
merge-recursive: split internal fields into a separate struct
merge-recursive: avoid losing output and leaking memory holding that output
merge-recursive: comment and reorder the merge_options fields
merge-recursive: consolidate unnecessary fields in merge_options
merge-recursive: move some definitions around to clean up the header
merge-recursive: rename merge_options argument to opt in header
merge-recursive: rename 'mrtree' to 'result_tree', for clarity
merge-recursive: use common name for ancestors/common/base_list
merge-recursive: fix some overly long lines
cache-tree: share code between functions writing an index as a tree
merge-recursive: don't force external callers to do our logging
merge-recursive: remove useless parameter in merge_trees()
merge-recursive: exit early if index != head
Ensure index matches head before invoking merge machinery, round N
merge-recursive: remove another implicit dependency on the_repository
...
"git rebase -i" showed a wrong HEAD while "reword" open the editor.
* pw/rebase-i-show-HEAD-to-reword:
sequencer: simplify root commit creation
rebase -i: check for updated todo after squash and reword
rebase -i: always update HEAD before rewording
Preparation for SHA-256 upgrade continues.
* bc/object-id-part17: (26 commits)
midx: switch to using the_hash_algo
builtin/show-index: replace sha1_to_hex
rerere: replace sha1_to_hex
builtin/receive-pack: replace sha1_to_hex
builtin/index-pack: replace sha1_to_hex
packfile: replace sha1_to_hex
wt-status: convert struct wt_status to object_id
cache: remove null_sha1
builtin/worktree: switch null_sha1 to null_oid
builtin/repack: write object IDs of the proper length
pack-write: use hash_to_hex when writing checksums
sequencer: convert to use the_hash_algo
bisect: switch to using the_hash_algo
sha1-lookup: switch hard-coded constants to the_hash_algo
config: use the_hash_algo in abbrev comparison
combine-diff: replace GIT_SHA1_HEXSZ with the_hash_algo
bundle: switch to use the_hash_algo
connected: switch GIT_SHA1_HEXSZ to the_hash_algo
show-index: switch hard-coded constants to the_hash_algo
blame: remove needless comparison with GIT_SHA1_HEXSZ
...
`hashmap_free_entries' behaves like `container_of' and passes
the offset of the hashmap_entry struct to the internal
`hashmap_free_' function, allowing the function to free any
struct pointer regardless of where the hashmap_entry field
is located.
`hashmap_free' no longer takes any arguments aside from
the hashmap itself.
Signed-off-by: Eric Wong <e@80x24.org>
Reviewed-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Another step in eliminating the requirement of hashmap_entry
being the first member of a struct.
Signed-off-by: Eric Wong <e@80x24.org>
Reviewed-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update callers to use hashmap_get_entry, hashmap_get_entry_from_hash
or container_of as appropriate.
This is another step towards eliminating the requirement of
hashmap_entry being the first field in a struct.
Signed-off-by: Eric Wong <e@80x24.org>
Reviewed-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is less error-prone than "void *" as the compiler now
detects invalid types being passed.
Signed-off-by: Eric Wong <e@80x24.org>
Reviewed-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is less error-prone than "void *" as the compiler now
detects invalid types being passed.
Signed-off-by: Eric Wong <e@80x24.org>
Reviewed-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
C compilers do type checking to make life easier for us. So
rely on that and update all hashmap_entry_init callers to take
"struct hashmap_entry *" to avoid future bugs while improving
safety and readability.
Signed-off-by: Eric Wong <e@80x24.org>
Reviewed-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase --rebase-merges" learned to drive different merge
strategies and pass strategy specific options to them.
* js/rebase-r-strategy:
t3427: accelerate this test by using fast-export and fast-import
rebase -r: do not (re-)generate root commits with `--root` *and* `--onto`
t3418: test `rebase -r` with merge strategies
t/lib-rebase: prepare for testing `git rebase --rebase-merges`
rebase -r: support merge strategies other than `recursive`
t3427: fix another incorrect assumption
t3427: accommodate for the `rebase --merge` backend having been replaced
t3427: fix erroneous assumption
t3427: condense the unnecessarily repetitive test cases into three
t3427: move the `filter-branch` invocation into the `setup` case
t3427: simplify the `setup` test case significantly
t3427: add a clarifying comment
rebase: fold git-rebase--common into the -p backend
sequencer: the `am` and `rebase--interactive` scripts are gone
.gitignore: there is no longer a built-in `git-rebase--interactive`
t3400: stop referring to the scripted rebase
Drop unused git-rebase--am.sh
Adapt try_to_commit() to create a new root commit rather than special
casing this in run_git_commit(). This significantly reduces the amount of
special case code for creating the root commit and reduces the number of
commit code paths we have to worry about.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While a rebase is stopped for the user to edit a commit message it can
be convenient for them to also edit the todo list. The scripted version
of rebase supported this but the C version does not. We already check to
see if the todo list has been updated by an exec command so extend this
to rewords and squashes. It only costs a single stat call to do this so
it should not affect the speed of the rebase (especially as it has just
stopped for the user to edit a message)
Note that for squashes the editor may be opened on a different pick to
the squash itself as we edit the message at the end of a chain fixups
and squashes.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>
Convert several uses of GIT_SHA1_HEXSZ constants to be references to
the_hash_algo.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Alternatively, you can view this as "make the merge functions behave
more similarly." merge-recursive has three different entry points:
merge_trees(), merge_recursive(), and merge_recursive_generic(). Two of
these would call diff_warn_rename_limit(), but merge_trees() didn't.
This lead to callers of merge_trees() needing to manually call
diff_warn_rename_limit() themselves. Move this to the new
merge_finalize() function to make sure that all three entry points run
this function.
Note that there are two external callers of merge_trees(), one in
sequencer.c and one in builtin/checkout.c. The one in sequencer.c is
cleaned up by this patch and just transfers where the call to
diff_warn_rename_limit() is made; the one in builtin/checkout.c is for
switching to a different commit and in the very rare case where the
warning might be triggered, it would probably be helpful to include
(e.g. if someone is modifying a file that has been renamed in moving to
the other commit, but there are so many renames between the commits that
the limit kicks in and none are detected, it may help to have an
explanation about why they got a delete/modify conflict instead of a
proper content merge in a renamed file).
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge_trees() took a results parameter that would only be written when
opt->call_depth was positive, which is never the case now that
merge_trees_internal() has been split from merge_trees(). Remove the
misleading and unused parameter from merge_trees().
While at it, add some comments explaining how the output of
merge_trees() and merge_recursive() differ.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When rebasing a complete commit history onto a given commit, it is
pretty obvious that the root commits should be rebased on top of said
given commit.
To test this, let's kill two birds with one stone and add a test case to
t3427-rebase-subtree.sh that not only demonstrates that this works, but
also that `git rebase -r` works with merge strategies now.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We already support merge strategies in the sequencer, but only for
`pick` commands.
With this commit, we now also support them in `merge` commands. The
approach is simple: if any merge strategy option is specified, or if any
merge strategy other than `recursive` is specified, we simply spawn the
`git merge` command. Otherwise, we handle the merge in-process just as
before.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update a code comment that referred to those files as if they were still
there.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase --abort" used to leave refs/rewritten/ when concluding
"git rebase -r", which has been corrected.
* pw/rebase-abort-clean-rewritten:
rebase --abort/--quit: cleanup refs/rewritten
sequencer: return errors from sequencer_remove_state()
rebase: warn if state directory cannot be removed
rebase: fix a memory leak
The tree-walk API learned to pass an in-core repository
instance throughout more codepaths.
* nd/tree-walk-with-repo:
t7814: do not generate same commits in different repos
Use the right 'struct repository' instead of the_repository
match-trees.c: remove the_repo from shift_tree*()
tree-walk.c: remove the_repo from get_tree_entry_follow_symlinks()
tree-walk.c: remove the_repo from get_tree_entry()
tree-walk.c: remove the_repo from fill_tree_descriptor()
sha1-file.c: remove the_repo from read_object_with_reference()
"git cherry-pick/revert" learned a new "--skip" action.
* ra/cherry-pick-revert-skip:
cherry-pick/revert: advise using --skip
cherry-pick/revert: add --skip option
sequencer: use argv_array in reset_merge
sequencer: rename reset_for_rollback to reset_merge
sequencer: add advice for revert
The code to read state files used by the sequencer machinery for
"git status" has been made more robust against a corrupt or stale
state files.
* pw/status-with-corrupt-sequencer-state:
status: do not report errors in sequencer/todo
sequencer: factor out todo command name parsing
sequencer: always allow tab after command name
Use "Erase in Line" CSI sequence that is already used in the editor
support to clear cruft in the progress output.
* sg/rebase-progress:
progress: use term_clear_line()
rebase: fix garbled progress display with '-x'
pager: add a helper function to clear the last line in the terminal
t3404: make the 'rebase.missingCommitsCheck=ignore' test more focused
t3404: modernize here doc style
Two new commands "git switch" and "git restore" are introduced to
split "checking out a branch to work on advancing its history" and
"checking out paths out of the index and/or a tree-ish to work on
advancing the current history" out of the single "git checkout"
command.
* nd/switch-and-restore: (46 commits)
completion: disable dwim on "git switch -d"
switch: allow to switch in the middle of bisect
t2027: use test_must_be_empty
Declare both git-switch and git-restore experimental
help: move git-diff and git-reset to different groups
doc: promote "git restore"
user-manual.txt: prefer 'merge --abort' over 'reset --hard'
completion: support restore
t: add tests for restore
restore: support --patch
restore: replace --force with --ignore-unmerged
restore: default to --source=HEAD when only --staged is specified
restore: reject invalid combinations with --staged
restore: add --worktree and --staged
checkout: factor out worktree checkout code
restore: disable overlay mode by default
restore: make pathspec mandatory
restore: take tree-ish from --source option instead
checkout: split part of it to new command 'restore'
doc: promote "git switch"
...
"git rebase --abort" used to leave refs/rewritten/ when concluding
"git rebase -r", which has been corrected.
* pw/rebase-abort-clean-rewritten:
rebase --abort/--quit: cleanup refs/rewritten
sequencer: return errors from sequencer_remove_state()
rebase: warn if state directory cannot be removed
rebase: fix a memory leak
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>
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>
Avoid using magic numbers for array size and index under `reset_merge`
function. Use `argv_array` instead. This will make code shorter and
easier to extend.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We are on a path to teach cherry-pick/revert how to skip commits. To
achieve this, we could really make use of existing functions.
reset_for_rollback is one such function, but the name does not
intuitively suggest to use it to reset a merge, which it was born to
perform, see 539047c ("revert: introduce --abort to cancel a failed
cherry-pick", 2011-11-23). Change the name to reset_merge to make
it more intuitive.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the case of merge conflicts, while performing a revert, we are
currently advised to use `git cherry-pick --<sequencer-options>`.
Introduce a separate advice message for `git revert`. Also change
the signature of `create_seq_dir` to handle which advice to display
selectively.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When running a command with the 'exec' instruction during an
interactive rebase session, or for a range of commits using 'git
rebase -x', the output can be a bit garbled when the name of the
command is short enough:
$ git rebase -x true HEAD~5
Executing: true
Executing: true
Executing: true
Executing: true
Executing: true)
Successfully rebased and updated refs/heads/master.
Note the ')' at the end of the last line. It gets more garbled as the
range of commits increases:
$ git rebase -x true HEAD~50
Executing: true)
[ repeated 3 more times ]
Executing: true0)
[ repeated 44 more times ]
Executing: true00)
Successfully rebased and updated refs/heads/master.
Those extra numbers and ')' are remnants of the previously displayed
"Rebasing (N/M)" progress lines that are usually completely
overwritten by the "Executing: <cmd>" lines, unless 'cmd' is short and
the "N/M" part is long.
Make sure that the previously displayed "Rebasing (N/M)" line is
cleared by using the term_clear_line() helper function added in the
previous patch. Do so only when not being '--verbose', because in
that case these "Rebasing (N/M)" lines are not printed as progress
(i.e. as lines with '\r' at the end), but as "regular" output (with
'\n' at the end).
A couple of other rebase commands print similar messages, e.g.
"Stopped at <abbrev-oid>... <subject>" for the 'edit' or 'break'
commands, or the "Successfully rebased and updated <full-ref>." at the
very end. These are so long that they practically always overwrite
that "Rebasing (N/M)" progress line, but let's be prudent, and clear
the last line before printing these, too.
In 't3420-rebase-autostash.sh' two helper functions prepare the
expected output of four tests that check the full output of 'git
rebase' and thus are affected by this change, so adjust their
expectations to account for the new line clearing.
Note that this patch doesn't completely eliminate the possibility of
similar garbled outputs, e.g. some error messages from rebase or the
"Auto-merging <file>" message from within the depths of the merge
machinery might not be long enough to completely cover the last
"Rebasing (N/M)" line. This patch doesn't do anything about them,
because dealing with them individually would result in way too much
churn, while having a catch-all term_clear_line() call in the common
code path of pick_commits() would hide the "Rebasing (N/M)" line way
too soon, and it would either flicker or be invisible.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are a couple of places where 'struct repository' is already passed
around, but the_repository is still used. Use the right repo.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While at there, clean up the_repo usage in builtin/merge-tree.c a tiny
bit.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
commit 4a72486de9 ("fix cherry-pick/revert status after commit",
2019-04-16) used parse_insn_line() to parse the first line of the todo
list to check if it was a pick or revert. However if the todo list is
left over from an old cherry-pick or revert and references a commit that
no longer exists then parse_insn_line() prints an error message which is
confusing for users [1]. Instead parse just the command name so that the
user is alerted to the presence of stale sequencer state by status
reporting that a cherry-pick or revert is in progress.
Note that we should not be leaving stale sequencer state lying around
(or at least not as often) after commit b07d9bfd17 ("commit/reset: try
to clean up sequencer state", 2019-04-16). However the user may still
have stale state that predates that commit.
Also avoid printing an error message if for some reason the user has a
file called `sequencer` in $GIT_DIR.
[1] https://public-inbox.org/git/3bc58c33-4268-4e7c-bf1a-fe349b3cb037@www.fastmail.com/
Reported-by: Espen Antonsen <espen@inspired.no>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Factor out the code that parses the name of the command at the start of
each line in the todo file into its own function so that it can be used
in the next commit.
As I don't want to burden other callers with having to pass in a pointer
to the end of the line the test for an abbreviated command is
changed. This change should not affect the behavior. Instead of testing
`eol == bol + 1` the new code checks for the end of the line by testing
for '\n', '\r' or '\0' following the abbreviated name. To avoid reading
past the end of an empty string it also checks that there is actually a
single character abbreviation before testing if it matches. This
prevents it from matching '\0' as the abbreviated name and then trying
to read another character.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The code that parses the todo list allows an unabbreviated command name
to be followed by a space or a tab, but if the command name is
abbreviated it only allows a space after it. Fix this inconsistency.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A "merge -c" instruction during "git rebase --rebase-merges" should
give the user a chance to edit the log message, even when there is
otherwise no need to create a new merge and replace the existing
one (i.e. fast-forward instead), but did not. Which has been
corrected.
* pw/rebase-edit-message-for-replayed-merge:
rebase -r: always reword merge -c
If a merge can be fast-forwarded then make sure that we still edit the
commit message if the user specifies -c. The implementation follows the
same pattern that is used for ordinary rewords that are fast-forwarded.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If there is an error when removing the state directory then we should
report it. This matches what the non-interactive rebase does.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update a code comment that referred to those files as if they were still
there.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git chery-pick" (and "revert" that shares the same runtime engine)
that deals with multiple commits got confused when the final step
gets stopped with a conflict and the user concluded the sequence
with "git commit". Attempt to fix it by cleaning up the state
files used by these commands in such a situation.
* pw/clean-sequencer-state-upon-final-commit:
fix cherry-pick/revert status after commit
commit/reset: try to clean up sequencer state
The internal implementation of "git rebase -i" has been updated to
avoid forking a separate "rebase--interactive" process.
* pw/rebase-i-internal:
rebase -i: run without forking rebase--interactive
rebase: use a common action enum
rebase -i: use struct rebase_options in do_interactive_rebase()
rebase -i: use struct rebase_options to parse args
rebase -i: use struct object_id for squash_onto
rebase -i: use struct commit when parsing options
rebase -i: remove duplication
rebase -i: combine rebase--interactive.c with rebase.c
rebase: use OPT_RERERE_AUTOUPDATE()
rebase: rename write_basic_state()
rebase: don't translate trace strings
sequencer: always discard index after checkout
The list of conflicted paths shown in the editor while concluding a
conflicted merge was shown above the scissors line when the
clean-up mode is set to "scissors", even though it was commented
out just like the list of updated paths and other information to
help the user explain the merge better.
* dl/merge-cleanup-scissors-fix:
cherry-pick/revert: add scissors line on merge conflict
sequencer.c: save and restore cleanup mode
merge: add scissors line on merge conflict
merge: cleanup messages like commit
parse-options.h: extract common --cleanup option
commit: extract cleanup_mode functions to sequencer
t7502: clean up style
t7604: clean up style
t3507: clean up style
t7600: clean up style
"git cherry-pick" run with the "-x" or the "--signoff" option used
to (and more importantly, ought to) clean up the commit log message
with the --cleanup=space option by default, but this has been
broken since late 2017. This has been fixed.
* pw/sequencer-cleanup-with-signoff-x-fix:
sequencer: fix cleanup with --signoff and -x
"git cherry-pick --options A..B", after giving control back to the
user to ask help resolving a conflicted step, did not honor the
options it originally received, which has been corrected.
* pw/cherry-pick-continue:
cherry-pick --continue: remember options
cherry-pick: demonstrate option amnesia
sequencer: break some long lines
The scripted version of "git rebase -i" wrote and rewrote the todo
list many times during a single step of its operation, and the
recent C-rewrite made a faithful conversion of the logic to C. The
implementation has been updated to carry necessary information
around in-core to avoid rewriting the same file over and over
unnecessarily.
* ag/sequencer-reduce-rewriting-todo:
rebase--interactive: move transform_todo_file()
sequencer: use edit_todo_list() in complete_action()
rebase-interactive: rewrite edit_todo_list() to handle the initial edit
rebase-interactive: append_todo_help() changes
rebase-interactive: use todo_list_write_to_file() in edit_todo_list()
sequencer: refactor skip_unnecessary_picks() to work on a todo_list
rebase--interactive: move rearrange_squash_in_todo_file()
rebase--interactive: move sequencer_add_exec_commands()
sequencer: change complete_action() to use the refactored functions
sequencer: make sequencer_make_script() write its script to a strbuf
sequencer: refactor rearrange_squash() to work on a todo_list
sequencer: refactor sequencer_add_exec_commands() to work on a todo_list
sequencer: refactor check_todo_list() to work on a todo_list
sequencer: introduce todo_list_write_to_file()
sequencer: refactor transform_todos() to work on a todo_list
sequencer: remove the 'arg' field from todo_item
sequencer: make the todo_list structure public
sequencer: changes in parse_insn_buffer()
This is in preparation for using `struct rebase_options` when parsing
options in cmd_rebase__interactive(). Using a string for onto,
restrict_revision and upstream, was a hangover from the scripted version
of rebase. The functions that use these variables are updated to take a
`struct commit`.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As the checkout runs in a separate process our index will be out of date
so it should be discarded. The existing callers are not doing this
consistently so do it here to avoid the callers having to worry about
it.
This fixes some test failures that happen if do_interactive_rebase() is
called without forking rebase--interactive which we will implement
shortly. Running
git rebase -i master topic
starting on master created empty todo lists because all the commits in
topic were marked as cherry-picks. After topic was checked out in
prepare_branch_to_be_rebased() the working tree contained the contents
from topic but the index contained master and the cache entries were
still valid. This meant that diff_populate_filespec() which loads the
blobs when calculating patch-id's ended up reading the contents for
master from the working tree which actually contained topic.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ag/sequencer-reduce-rewriting-todo:
rebase--interactive: move transform_todo_file()
sequencer: use edit_todo_list() in complete_action()
rebase-interactive: rewrite edit_todo_list() to handle the initial edit
rebase-interactive: append_todo_help() changes
rebase-interactive: use todo_list_write_to_file() in edit_todo_list()
sequencer: refactor skip_unnecessary_picks() to work on a todo_list
rebase--interactive: move rearrange_squash_in_todo_file()
rebase--interactive: move sequencer_add_exec_commands()
sequencer: change complete_action() to use the refactored functions
sequencer: make sequencer_make_script() write its script to a strbuf
sequencer: refactor rearrange_squash() to work on a todo_list
sequencer: refactor sequencer_add_exec_commands() to work on a todo_list
sequencer: refactor check_todo_list() to work on a todo_list
sequencer: introduce todo_list_write_to_file()
sequencer: refactor transform_todos() to work on a todo_list
sequencer: remove the 'arg' field from todo_item
sequencer: make the todo_list structure public
sequencer: changes in parse_insn_buffer()
Fix a bug where the scissors line is placed after the Conflicts:
section, in the case where a merge conflict occurs and
commit.cleanup = scissors.
Helped-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the user specifies an explicit cleanup mode then save and restore it
so that it is preserved by 'git cherry-pick --continue'.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Before commit 356ee4659b ("sequencer: try to commit without forking 'git
commit'", 2017-11-24) when --signoff or -x were given on the command
line the commit message was cleaned up with --cleanup=space or
commit.cleanup if it was set. Unfortunately this behavior was lost when
I implemented committing without forking. Fix this and add some tests to
catch future regressions.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the user commits a conflict resolution using `git commit` in the
middle of a sequence of cherry-picks/reverts then `git status` missed
the fact that a cherry-pick/revert is still in progress.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When cherry-picking or reverting a sequence of commits and if the final
pick/revert has conflicts and the user uses `git commit` to commit the
conflict resolution and does not run `git cherry-pick --continue` then
the sequencer state is left behind. This can cause problems later. In my
case I cherry-picked a sequence of commits the last one of which I
committed with `git commit` after resolving some conflicts, then a while
later, on a different branch I aborted a revert which rewound my HEAD to
the end of the cherry-pick sequence on the previous branch. Avoid this
potential problem by removing the sequencer state if we're committing or
resetting the final pick in a sequence.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remember --allow-empty, --allow-empty-message and
--keep-redundant-commits when cherry-pick stops for a conflict
resolution.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
reformat save_opts() to remove excessively long lines.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The interactive rebase simply complains about an "invalid line" when the
object hash of, say, a `pick` line could not be parsed.
Let's tell the user what happened in a little more detail.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A more structured way to obtain execution trace has been added.
* jh/trace2:
trace2: add for_each macros to clang-format
trace2: t/helper/test-trace2, t0210.sh, t0211.sh, t0212.sh
trace2:data: add subverb for rebase
trace2:data: add subverb to reset command
trace2:data: add subverb to checkout command
trace2:data: pack-objects: add trace2 regions
trace2:data: add trace2 instrumentation to index read/write
trace2:data: add trace2 hook classification
trace2:data: add trace2 transport child classification
trace2:data: add trace2 sub-process classification
trace2:data: add editor/pager child classification
trace2:data: add trace2 regions to wt-status
trace2: collect Windows-specific process information
trace2: create new combined trace facility
trace2: Documentation/technical/api-trace2.txt
Four new configuration variables {author,committer}.{name,email}
have been introduced to override user.{name,email} in more specific
cases.
* wh/author-committer-ident-config:
config: allow giving separate author and committer idents
This refactors rearrange_squash() to work on a todo_list to avoid
redundant reads and writes. The function is renamed
todo_list_rearrange_squash().
The old version created a new buffer, which was directly written to the
disk. This new version creates a new item list by just copying items
from the old item list, without creating a new buffer. This eliminates
the need to reparse the todo list, but this also means its buffer cannot
be directly written to the disk.
As rebase -p still need to check the todo list from the disk, a new
function is introduced, rearrange_squash_in_todo_file().
complete_action() still uses rearrange_squash_in_todo_file() for now.
This will be changed in a future commit.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As transform_todo_file() is only needed inside of
rebase--interactive.c for `rebase -p', it is moved there from
sequencer.c.
The parameter r (repository) is dropped along the way.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This refactors sequencer_add_exec_commands() to work on a todo_list to
avoid redundant reads and writes to the disk.
Instead of inserting the `exec' commands between the other commands and
re-parsing the buffer at the end, they are appended to the buffer once,
and a new list of items is created. Items from the old list are copied
across and new `exec' items are appended when necessary. This
eliminates the need to reparse the buffer, but this also means we have
to use todo_list_write_to_disk() to write the file.
todo_list_add_exec_commands() and sequencer_add_exec_commands() are
modified to take a string list instead of a string -- one item for each
command. This makes it easier to insert a new command to the todo list
for each command to execute.
sequencer_add_exec_commands() still reads the todo list from the disk,
as it is needed by rebase -p.
complete_action() still uses sequencer_add_exec_commands() for now.
This will be changed in a future commit.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This changes complete_action() to use edit_todo_list(), now that it can
handle the initial edit of the todo list.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
edit_todo_list() is changed to work on a todo_list, and to handle the
initial edition of the todo list (ie. making a backup of the todo
list).
It does not check for dropped commits yet, as todo_list_check() does not
take the commits that have already been processed by the rebase (ie. the
todo list is edited in the middle of a rebase session).
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This moves the writing of the comment "Rebase $shortrevisions onto
$shortonto ($command_count commands)" from todo_list_write_to_file() to
append_todo_help().
shortrevisions, shortonto, and command_count are passed as parameters to
append_todo_help().
During the initial edit of the todo list, shortrevisions and shortonto
are not NULL. Therefore, if shortrevisions or shortonto is NULL, then
edit_todo would be true, otherwise it would be false. Thus, edit_todo
is removed from the parameters of append_todo_help().
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Just like complete_action(), edit_todo_list() used a
function (transform_todo_file()) that read the todo list from the disk
and wrote it back, resulting in useless disk accesses.
This changes edit_todo_list() to call directly todo_list_write_to_file()
instead.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This refactors skip_unnecessary_picks() to work on a todo_list. As this
function is only called by complete_action() (and thus is not used by
rebase -p), the file-handling logic is completely dropped here.
Instead of truncating the todo list’s buffer, the items are moved to
the beginning of the list, eliminating the need to reparse the list.
This also means its buffer cannot be directly written to the disk.
rewrite_file() is then removed, as it is now unused.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As rearrange_squash_in_todo_file() is only needed inside of
rebase--interactive.c for `rebase -p', it is moved there from
sequencer.c.
The parameter r (repository) is dropped along the way, and the error
handling is slightly improved.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As sequencer_add_exec_commands() is only needed inside of
rebase--interactive.c for `rebase -p', it is moved there from
sequencer.c.
The parameter r (repository) is dropped along the way.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
complete_action() used functions that read the todo-list file, made some
changes to it, and wrote it back to the disk.
The previous commits were dedicated to separate the part that deals with
the file from the actual logic of these functions. Now that this is
done, we can call directly the "logic" functions to avoid useless file
access.
The parsing of the list has to be done by the caller. If the buffer of
the todo list provided by the caller is empty, a `noop' command is
directly added to the todo list, without touching the buffer.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This makes sequencer_make_script() write its script to a strbuf (ie. the
buffer of a todo_list) instead of a FILE. This reduce the amount of
read/write made by rebase interactive.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit d0aaa46fd3 ("commit: move empty message checks to libgit",
2017-11-10) removes the last use of 'sign_off_header' outside of
the "sequencer.c" source file. Remove the extern declaration from
the header file and mark the definition of the symbol with the
static keyword.
Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The assumption to work on the single "in-core index" instance has
been reduced from the library-ish part of the codebase.
* nd/the-index-final:
cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch
read-cache.c: remove the_* from index_has_changes()
merge-recursive.c: remove implicit dependency on the_repository
merge-recursive.c: remove implicit dependency on the_index
sha1-name.c: remove implicit dependency on the_index
read-cache.c: replace update_index_if_able with repo_&
read-cache.c: kill read_index()
checkout: avoid the_index when possible
repository.c: replace hold_locked_index() with repo_hold_locked_index()
notes-utils.c: remove the_repository references
grep: use grep_opt->repo instead of explict repo argument
"git rebase --merge" as been reimplemented by reusing the internal
machinery used for "git rebase -i".
* en/rebase-merge-on-sequencer:
rebase: implement --merge via the interactive machinery
rebase: define linearization ordering and enforce it
git-legacy-rebase: simplify unnecessary triply-nested if
git-rebase, sequencer: extend --quiet option for the interactive machinery
am, rebase--merge: do not overlook --skip'ed commits with post-rewrite
t5407: add a test demonstrating how interactive handles --skip differently
rebase: fix incompatible options error message
rebase: make builtin and legacy script error messages the same
The author.email, author.name, committer.email and committer.name
settings are analogous to the GIT_AUTHOR_* and GIT_COMMITTER_*
environment variables, but for the git config system. This allows them
to be set separately for each repository.
Git supports setting different authorship and committer
information with environment variables. However, environment variables
are set in the shell, so if different authorship and committer
information is needed for different repositories an external tool is
required.
This adds support to git config for author.email, author.name,
committer.email and committer.name settings so this information
can be set per repository.
Also, it generalizes the fmt_ident function so it can handle author vs
committer identification.
Signed-off-by: William Hubbs <williamh@gentoo.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase -i" learned to re-execute a command given with 'exec'
to run after it failed the last time.
* js/rebase-i-redo-exec:
rebase: introduce a shortcut for --reschedule-failed-exec
rebase: add a config option to default to --reschedule-failed-exec
rebase: introduce --reschedule-failed-exec
This refactors check_todo_list() to work on a todo_list to avoid
redundant reads and writes to the disk. The function is renamed
todo_list_check(). The parsing of the two todo lists is left to the
caller.
As rebase -p still need to check the todo list from the disk, a new
function is introduced, check_todo_list_from_file(). It reads the file
from the disk, parses it, pass the todo_list to todo_list_check(), and
writes it back to the disk.
As get_missing_commit_check_level() and the enum
missing_commit_check_level are no longer needed inside of sequencer.c,
they are moved to rebase-interactive.c, and made static again.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This introduces a new function to recreate the text of a todo list from
its commands and write it to a file. This will be useful as the next
few commits will change the use of the buffer in struct todo_list so it
will no longer be a mirror of the file on disk.
This functionality already exists in todo_list_transform(), but this
function was made to replace the buffer of a todo list, which is not
what we want here. Thus, the part of todo_list_transform() that
replaces the buffer is dropped, and the function is renamed
todo_list_to_strbuf(). It is called by todo_list_write_to_file() to
fill the buffer to write to the disk.
todo_list_write_to_file() can also take care of appending the help text
to the buffer before writing it to the disk, or to write only the first
n items of the list. This feature will be used by
skip_unnecessary_picks(), which has to write done commands in a file.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This refactors transform_todos() to work on a todo_list. The function
is renamed todo_list_transform().
As rebase -p still need to check the todo list from the disk, a new
function is introduced, transform_todo_file(). It is still used by
complete_action() and edit_todo_list() for now, but they will be
replaced in a future commit.
todo_list_transform() is not a static function, because it will be used
by edit_todo_list() from rebase-interactive.c in a future commit.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The 'arg' field of todo_item used to store the address of the first byte
of the parameter of a command in a todo list. It was associated with
the length of the parameter (the 'arg_len' field).
This replaces the 'arg' field by 'arg_offset'. This new field does not
store the address of the parameter, but the position of the first
character of the parameter in the buffer. todo_item_get_arg() is added
to return the address of the parameter of an item.
This will prevent todo_list_add_exec_commands() from having to do awful
pointer arithmetics when growing the todo list buffer.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git cherry-pick -m1" was forbidden when picking a non-merge
commit, even though there _is_ parent number 1 for such a commit.
This was done to avoid mistakes back when "cherry-pick" was about
picking a single commit, but is no longer useful with "cherry-pick"
that can pick a range of commits. Now the "-m$num" option is
allowed when picking any commit, as long as $num names an existing
parent of the commit.
Technically this is a backward incompatible change; hopefully
nobody is relying on the error-checking behaviour.
* so/cherry-pick-always-allow-m1:
t3506: validate '-m 1 -ff' is now accepted for non-merge commits
t3502: validate '-m 1' argument is now accepted for non-merge commits
cherry-pick: do not error on non-merge commits when '-m 1' is specified
t3510: stop using '-m 1' to force failure mid-sequence of cherry-picks
read_index() shares the same problem as hold_locked_index(): it
assumes $GIT_DIR/index. Move all call sites to repo_read_index()
instead. read_index_preload() and read_index_unmerged() are also
killed as a consequence.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
hold_locked_index() assumes the index path at $GIT_DIR/index. This is
not good for places that take an arbitrary index_state instead of
the_index, which is basically everywhere except builtin/.
Replace it with repo_hold_locked_index(). hold_locked_index() remains
as a wrapper around repo_hold_locked_index() to reduce changes in builtin/
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This makes the structures todo_list and todo_item, and the functions
todo_list_release() and parse_insn_buffer(), accessible outside of
sequencer.c.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This clears the number of items of a todo_list before parsing it to
allow to parse the same list multiple times without issues. As its
items are not dynamically allocated, or don’t need to allocate memory,
no additionnal memory management is required here.
Furthermore, if a line is invalid, the type of the corresponding
command is set to a garbage value, and its argument is defined properly.
This will allow to recreate the text of a todo list from its commands,
even if one of them is incorrect.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While 'quiet' and 'interactive' may sound like antonyms, the interactive
machinery actually has logic that implements several
interactive_rebase=implied cases (--exec, --keep-empty, --rebase-merges)
which won't pop up an editor. The rewrite of interactive rebase in C
added a quiet option, though it only turns stats off. Since we want to
make the interactive machinery also take over for git-rebase--merge, it
should fully implement the --quiet option.
git-rebase--interactive was already somewhat quieter than
git-rebase--merge and git-rebase--am, possibly because cherry-pick has
just traditionally been quieter. As such, we only drop a few
informational messages -- "Rebasing (n/m)" and "Successfully rebased..."
Also, for simplicity, remove the differences in how quiet and verbose
options were recorded. Having one be signalled by the presence of a
"verbose" file in the state_dir, while the other was signalled by the
contents of a "quiet" file was just weirdly inconsistent. (This
inconsistency pre-dated the rewrite into C.) Make them consistent by
having them both key off the presence of the file.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When cherry-picking multiple commits, it's impossible to have both
merge- and non-merge commits on the same command-line. Not specifying
'-m 1' results in cherry-pick refusing to handle merge commits, while
specifying '-m 1' fails on non-merge commits.
This patch allows '-m 1' for non-merge commits. As mainline is always
the only parent for a non-merge commit, it makes little sense to
disable it.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A common use case for the `--exec` option is to verify that each commit
in a topic branch compiles cleanly, via `git rebase -x make <base>`.
However, when an `exec` in such a rebase fails, it is not re-scheduled,
which in this instance is not particularly helpful.
Let's offer a flag to reschedule failed `exec` commands.
Based on an idea by Paul Morelle.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Bugfix for the recently graduated "git rebase --rebase-merges".
* js/rebase-r-and-merge-head:
status: rebase and merge can be in progress at the same time
built-in rebase --skip/--abort: clean up stale .git/<name> files
rebase -i: include MERGE_HEAD into files to clean up
rebase -r: do not write MERGE_HEAD unless needed
rebase -r: demonstrate bug with conflicting merges
The helper function to refresh the cached stat information in the
in-core index has learned to perform the lstat() part of the
operation in parallel on multi-core platforms.
* bp/refresh-index-using-preload:
refresh_index: remove unnecessary calls to preload_index()
speed up refresh_index() by utilizing preload_index()
Unify code to read the author-script used in "git am" and the
commands that use the sequencer machinery, e.g. "git rebase -i".
* pw/am-rebase-read-author-script:
sequencer: use read_author_script()
add read_author_script() to libgit
am: rename read_author_script()
am: improve author-script error reporting
am: don't die in read_author_script()
Every once in a while, the interactive rebase makes sure that no stale
files are lying around. These days, we need to include MERGE_HEAD into
that set of files, as the `merge` command will generate them.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we detect that a `merge` can be skipped because the merged commit
is already an ancestor of HEAD, we do not need to commit, therefore
writing the MERGE_HEAD file is useless.
It is actually worse than useless: a subsequent `git commit` will pick
it up and think that we want to merge that commit, still.
To avoid that, move the code that writes the MERGE_HEAD file to a
location where we already know that the `merge` cannot be skipped.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This case is more interesting than other boring "remove the_repo"
commits because while we need access to the object database, we cannot
simply use r->index because unpack-trees.c can operate on a temporary
index, not $GIT_DIR/index. Ideally we should be able to pass an object
database to lookup_tree() but that ship has sailed.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Note that the_hash_algo stays, even if we can easily replace it with
repo->hash_algo. My reason is I still believe tying hash_algo to a
struct repository is a wrong move. But if I'm wrong, we can always go
for another round of conversion.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since we're going to pass 'struct repository *' around most of the
time instead of 'struct index_state *' because most sequencer.c
operations need more than just the index, the_repository is replaced
as well in the functions that now take 'struct repository
*'. the_repository is still present in this file, but total clean up
will be done later. It's not the main focus of this patch.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
With refresh_index() learning to utilize preload_index() to speed up its
operation there is no longer any benefit to having the caller preload the
index first. Remove those unneeded calls by calling read_index() instead of
the preload variant.
There is no measurable performance impact of this patch - the 2nd call to
preload_index() bails out quickly but there is no reason to call it twice.
Signed-off-by: Ben Peart <benpeart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase -i" learned to take 'b' as the short form of 'break'
option in the todo list.
* js/rebase-i-shortopt:
rebase -i: recognize short commands without arguments
"git rebase -i" learned a new insn, 'break', that the user can
insert in the to-do list. Upon hitting it, the command returns
control back to the user.
* js/rebase-i-break:
rebase -i: introduce the 'break' command
rebase -i: clarify what happens on a failed `exec`
Rewrite of the remaining "rebase -i" machinery in C.
* ag/rebase-i-in-c:
rebase -i: move rebase--helper modes to rebase--interactive
rebase -i: remove git-rebase--interactive.sh
rebase--interactive2: rewrite the submodes of interactive rebase in C
rebase -i: implement the main part of interactive rebase as a builtin
rebase -i: rewrite init_basic_state() in C
rebase -i: rewrite write_basic_state() in C
rebase -i: rewrite the rest of init_revisions_and_shortrevisions() in C
rebase -i: implement the logic to initialize $revisions in C
rebase -i: remove unused modes and functions
rebase -i: rewrite complete_action() in C
t3404: todo list with commented-out commands only aborts
sequencer: change the way skip_unnecessary_picks() returns its result
sequencer: refactor append_todo_help() to write its message to a buffer
rebase -i: rewrite checkout_onto() in C
rebase -i: rewrite setup_reflog_action() in C
sequencer: add a new function to silence a command, except if it fails
rebase -i: rewrite the edit-todo functionality in C
editor: add a function to launch the sequence editor
rebase -i: rewrite append_todo_help() in C
sequencer: make three functions and an enum from sequencer.c public
Use the new function added in the last commit to read the author
script, updating read_env_script() and read_author_ident(). We now
have a single code path that reads the author script for am and all
flavors of rebase. This changes the behavior of read_env_script() as
previously it would set any environment variables that were in the
author-script file. Now it is an error if the file contains other
variables or any of GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL and
GIT_AUTHOR_DATE are missing. This is what am and the non interactive
version of rebase have been doing for several years so hopefully it
will not cause a problem for interactive rebase users. The advantage
is that we are reusing existing code from am which uses sq_dequote()
to properly dequote variables. This fixes potential problems with user
edited scripts as read_env_script() which did not track quotes
properly.
This commit also removes the fallback code for checking for a broken
author script after git is upgraded when a rebase is stopped. Now that
the parsing uses sq_dequote() it will reliably return an error if the
quoting is broken and the user will have to abort the rebase and
restart. This isn't ideal but it's a corner case and the detection of
the broken quoting could be confused by user edited author scripts.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add read_author_script() to sequencer.c based on the implementation in
builtin/am.c and update read_am_author_script() to use
read_author_script(). The sequencer code that reads the author script
will be updated in the next commit.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It came up in review [1, 2] that this non-idiomatic loop is a bit tricky.
When we find a space, we set `len = i`, which gives us the answer we are
looking for, but which also breaks out of the loop.
It turns out that this loop can confuse compilers as well. My copy of
gcc 7.3.0 realizes that we are essentially evaluating `(len + 1) < len`
and warns that the behavior is undefined if `len` is `INT_MAX`. (Because
the assignment `len = i` is guaranteed to decrease `len`, such undefined
behavior is not actually possible.)
Rewrite the loop to a more idiomatic variant which doesn't muck with
`len` in the loop body. That should help compilers and human readers
figure out what is going on here. But do note that we need to update
`len` since it is not only used just after this loop (where we could
have used `i` directly), but also later in this function.
While at it, reduce the scope of `i`.
[1] https://public-inbox.org/git/CAPig+cQbG2s-LrAo9+7C7=dXifbWFJ3SzuNa-QePHDk7egK=jg@mail.gmail.com/
[2] https://public-inbox.org/git/CAPig+cRjU6niXpT2FrDWZ0x1HmGf1ojVZj3uk2qXEGe-S7i_HQ@mail.gmail.com/
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
as shown by:
sequencer.c: In function ‘write_basic_state’:
sequencer.c:2392:37: warning: zero-length gnu_printf format string [-Wformat-zero-length]
write_file(rebase_path_verbose(), "");
where write_file will create an empty file if told to write an empty string
as can be inferred by the previous call
the somehow more convoluted syntax works around the issue by providing a non
empty format string and is already being used for the abort safety file since
1e41229d96 ("sequencer: make sequencer abort safer", 2016-12-07)
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The sequencer instruction 'b', short for 'break', is rejected:
error: invalid line 2: b
The reason is that the parser expects all short commands to have
an argument. Permit short commands without arguments.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git status" learns to show progress bar when refreshing the index
takes a long time.
* nd/status-refresh-progress:
status: show progress bar if refreshing the index takes too long
Various codepaths in the core-ish part learn to work on an
arbitrary in-core index structure, not necessarily the default
instance "the_index".
* nd/the-index: (23 commits)
revision.c: reduce implicit dependency the_repository
revision.c: remove implicit dependency on the_index
ws.c: remove implicit dependency on the_index
tree-diff.c: remove implicit dependency on the_index
submodule.c: remove implicit dependency on the_index
line-range.c: remove implicit dependency on the_index
userdiff.c: remove implicit dependency on the_index
rerere.c: remove implicit dependency on the_index
sha1-file.c: remove implicit dependency on the_index
patch-ids.c: remove implicit dependency on the_index
merge.c: remove implicit dependency on the_index
merge-blobs.c: remove implicit dependency on the_index
ll-merge.c: remove implicit dependency on the_index
diff-lib.c: remove implicit dependency on the_index
read-cache.c: remove implicit dependency on the_index
diff.c: remove implicit dependency on the_index
grep.c: remove implicit dependency on the_index
diff.c: remove the_index dependency in textconv() functions
blame.c: rename "repo" argument to "r"
combine-diff.c: remove implicit dependency on the_index
...
The 'edit' command can be used to cherry-pick a commit and then
immediately drop out of the interactive rebase, with exit code 0, to let
the user amend the commit, or test it, or look around.
Sometimes this functionality would come in handy *without*
cherry-picking a commit, e.g. to interrupt the interactive rebase even
before cherry-picking a commit, or immediately after an 'exec' or a
'merge'.
This commit introduces that functionality, as the spanking new 'break'
command.
Suggested-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
oidset_insert() returns 1 if the object ID is already in the set and
doesn't add it again, or 0 if it hadn't been present. Make use of that
fact instead of checking with an extra oidset_contains() call.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase" etc. in Git 2.19 fails to abort when given an empty
commit log message as result of editing, which has been corrected.
* en/sequencer-empty-edit-result-aborts:
sequencer: fix --allow-empty-message behavior, make it smarter
"git rebase -i" did not clear the state files correctly when a run
of "squash/fixup" is aborted and then the user manually amended the
commit instead, which has been corrected.
* js/rebase-i-autosquash-fix:
rebase -i: be careful to wrap up fixup/squash chains
rebase -i --autosquash: demonstrate a problem skipping the last squash
The reason rerere(), rerere_forget() and rerere_remaining() take a
struct repository instead of struct index_state is not obvious from
the patch:
Deep in update_paths() and find_conflict(), hold_locked_index() and
read_index() are called. These functions assumes the index path at
$GIT_DIR/index which is not always true when you take an arbitrary
index state. Taking a repository will allow us to point to the right
index path later when we replace them with repo_ versions.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
spatch transformation to replace boolean uses of !hashcmp() to
newly introduced oideq() is added, and applied, to regain
performance lost due to support of multiple hash algorithms.
* jk/cocci:
show_dirstat: simplify same-content check
read-cache: use oideq() in ce_compare functions
convert hashmap comparison functions to oideq()
convert "hashcmp() != 0" to "!hasheq()"
convert "oidcmp() != 0" to "!oideq()"
convert "hashcmp() == 0" to hasheq()
convert "oidcmp() == 0" to oideq()
introduce hasheq() and oideq()
coccinelle: use <...> for function exclusion
"git interpret-trailers" and its underlying machinery had a buggy
code that attempted to ignore patch text after commit log message,
which triggered in various codepaths that will always get the log
message alone and never get such an input.
* jk/trailer-fixes:
append_signoff: use size_t for string offsets
sequencer: ignore "---" divider when parsing trailers
pretty, ref-filter: format %(trailers) with no_divider option
interpret-trailers: allow suppressing "---" divider
interpret-trailers: tighten check for "---" patch boundary
trailer: pass process_trailer_opts to trailer_info_get()
trailer: use size_t for iterating trailer list
trailer: use size_t for string offsets
The code for computing history reachability has been shuffled,
obtained a bunch of new tests to cover them, and then being
improved.
* ds/reachable:
commit-reach: correct accidental #include of C file
commit-reach: use can_all_from_reach
commit-reach: make can_all_from_reach... linear
commit-reach: replace ref_newer logic
test-reach: test commit_contains
test-reach: test can_all_from_reach_with_flags
test-reach: test reduce_heads
test-reach: test get_merge_bases_many
test-reach: test is_descendant_of
test-reach: test in_merge_bases
test-reach: create new test tool for ref_newer
commit-reach: move can_all_from_reach_with_flags
upload-pack: generalize commit date cutoff
upload-pack: refactor ok_to_give_up()
upload-pack: make reachable() more generic
commit-reach: move commit_contains from ref-filter
commit-reach: move ref_newer from remote.c
commit.h: remove method declarations
commit-reach: move walk methods from commit.c
Refreshing the index is usually very fast, but it can still take a
long time sometimes. Cold cache is one. Or copying a repo to a new
place (*). It's good to show something to let the user know "git
status" is not hanging, it's just busy doing something.
(*) In this case, all stat info in the index becomes invalid and git
falls back to rehashing all file content to see if there's any
difference between updating stat info in the index. This is quite
expensive. Even with a repo as small as git.git, it takes 3
seconds.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In commit b00bf1c9a8 ("git-rebase: make --allow-empty-message the
default", 2018-06-27), several arguments were given for transplanting
empty commits without halting and asking the user for confirmation on
each commit. These arguments were incomplete because the logic clearly
assumed the only cases under consideration were transplanting of commits
with empty messages (see the comment about "There are two sources for
commits with empty messages). It didn't discuss or even consider
rewords, squashes, etc. where the user is explicitly asked for a new
commit message and provides an empty one. (My bad, I totally should
have thought about that at the time, but just didn't.)
Rewords and squashes are significantly different, though, as described
by SZEDER:
Let's suppose you start an interactive rebase, choose a commit to
squash, save the instruction sheet, rebase fires up your editor, and
then you notice that you mistakenly chose the wrong commit to
squash. What do you do, how do you abort?
Before [that commit] you could clear the commit message, exit the
editor, and then rebase would say "Aborting commit due to empty
commit message.", and you get to run 'git rebase --abort', and start
over.
But [since that commit, ...] saving the commit message as is would
let rebase continue and create a bunch of unnecessary objects, and
then you would have to use the reflog to return to the pre-rebase
state.
Also, he states:
The instructions in the commit message template, which is shown for
'reword' and 'squash', too, still say...
# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
These are sound arguments that when editing commit messages during a
sequencer operation, that if the commit message is empty then the
operation should halt and ask the user to correct. The arguments in
commit b00bf1c9a8 (referenced above) still apply when transplanting
previously created commits with empty commit messages, so the sequencer
should not halt for those.
Furthermore, all rationale so far applies equally for cherry-pick as for
rebase. Therefore, make the code default to --allow-empty-message when
transplanting an existing commit, and to default to halting when the
user is asked to edit a commit message and provides an empty one -- for
both rebase and cherry-pick.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Recent "git rebase -i" update started to write bogusly formatted
author-script, with a matching broken reading code. These are
fixed.
* pw/rebase-i-author-script-fix:
sequencer: fix quoting in write_author_script
sequencer: handle errors from read_author_ident()
When an interactive rebase was stopped at the end of a fixup/squash
chain, the user might have edited the commit manually before continuing
(with either `git rebase --skip` or `git rebase --continue`, it does not
really matter which).
We need to be very careful to wrap up the fixup/squash chain also in
this scenario: otherwise the next fixup/squash chain would try to pick
up where the previous one was left.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This rewrites write_basic_state() from git-rebase.sh in C. This is the
first step in the conversion of init_basic_state(), hence the mode in
rebase--helper.c is called INIT_BASIC_STATE. init_basic_state() will be
converted in the next commit.
The part of read_strategy_opts() that parses the stategy options is
moved to a new function to allow its use in rebase--helper.c.
Finally, the call to write_basic_state() is removed from
git-rebase--interactive.sh, replaced by a call to `--init-basic-state`.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This removes the modes `--skip-unnecessary-picks`, `--append-todo-help`,
and `--checkout-onto` from rebase--helper.c, the functions of
git-rebase--interactive.sh that were rendered useless by the rewrite of
complete_action(), and append_todo_help_to_file() from
rebase-interactive.c.
skip_unnecessary_picks() and checkout_onto() becomes static, as they are
only used inside of the sequencer.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This rewrites complete_action() from shell to C.
A new mode is added to rebase--helper (`--complete-action`), as well as
a new flag (`--autosquash`).
Finally, complete_action() is stripped from git-rebase--interactive.sh.
The original complete_action() would return the code 2 when the todo
list contained no actions. This was a special case for rebase -i and
-p; git-rebase.sh would then apply the autostash, delete the state
directory, and die with the message "Nothing to do". This cleanup is
rewritten in C instead of returning 2. As rebase -i no longer returns
2, the comment describing this behaviour in git-rebase.sh is updated to
reflect this change.
The message "Nothing to do" is now printed with error(), and so becomes
"error: nothing to do". Some tests in t3404 check this value, so they
are updated to fit this change.
The first check might seem useless as we write "noop" to the todo list
if it is empty. Actually, the todo list might contain commented
commands (ie. empty commits). In this case, complete_action() won’t
write "noop", and will abort without starting the editor.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is the flip side of the previous two patches: checking
for a non-zero oidcmp() can be more strictly expressed as
inequality. Like those patches, we write "!= 0" in the
coccinelle transformation, which covers by isomorphism the
more common:
if (oidcmp(E1, E2))
As with the previous two patches, this patch can be achieved
almost entirely by running "make coccicheck"; the only
differences are manual line-wrap fixes to match the original
code.
There is one thing to note for anybody replicating this,
though: coccinelle 1.0.4 seems to miss the case in
builtin/tag.c, even though it's basically the same as all
the others. Running with 1.0.7 does catch this, so
presumably it's just a coccinelle bug that was fixed in the
interim.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Using the more restrictive oideq() should, in the long run,
give the compiler more opportunities to optimize these
callsites. For now, this conversion should be a complete
noop with respect to the generated code.
The result is also perhaps a little more readable, as it
avoids the "zero is equal" idiom. Since it's so prevalent in
C, I think seasoned programmers tend not to even notice it
anymore, but it can sometimes make for awkward double
negations (e.g., we can drop a few !!oidcmp() instances
here).
This patch was generated almost entirely by the included
coccinelle patch. This mechanical conversion should be
completely safe, because we check explicitly for cases where
oidcmp() is compared to 0, which is what oideq() is doing
under the hood. Note that we don't have to catch "!oidcmp()"
separately; coccinelle's standard isomorphisms make sure the
two are treated equivalently.
I say "almost" because I did hand-edit the coccinelle output
to fix up a few style violations (it mostly keeps the
original formatting, but sometimes unwraps long lines).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sometimes we want to suppress a coccinelle transformation
inside a particular function. For example, in finding
conversions of hashcmp() to oidcmp(), we should not convert
the call in oidcmp() itself, since that would cause infinite
recursion. We write that like this:
@@
identifier f != oidcmp;
expression E1, E2;
@@
f(...) {...
- hashcmp(E1->hash, E2->hash)
+ oidcmp(E1, E2)
...}
to match the interior of any function _except_ oidcmp().
Unfortunately, this doesn't catch all cases (e.g., the one
in sequencer.c that this patch fixes). The problem, as
explained by one of the Coccinelle developers in [1], is:
For transformation, A ... B requires that B occur on every
execution path starting with A, unless that execution path
ends up in error handling code. (eg, if (...) { ...
return; }). Here your A is the start of the function. So
you need a call to hashcmp on every path through the
function, which fails when you add ifs.
[...]
Another issue with A ... B is that by default A and B
should not appear in the matched region. So your original
rule matches only the case where every execution path
contains exactly one call to hashcmp, not more than one.
One way to solve this is to put the pattern inside an
angle-bracket pattern like "<... P ...>", which allows zero
or more matches of P. That works (and is what this patch
does), but it has one drawback: it matches more than we care
about, and Coccinelle uses extra CPU. Here are timings for
"make coccicheck" before and after this patch:
[before]
real 1m27.122s
user 7m34.451s
sys 0m37.330s
[after]
real 2m18.040s
user 10m58.310s
sys 0m41.549s
That's not ideal, but it's more important for this to be
correct than to be fast. And coccicheck is already fairly
slow (and people don't run it for every single patch). So
it's an acceptable tradeoff.
There _is_ a better way to do it, which is to record the
position at which we find hashcmp(), and then check it
against the forbidden function list. Like:
@@
position p : script:python() { p[0].current_element != "oidcmp" };
expression E1,E2;
@@
- hashcmp@p(E1->hash, E2->hash)
+ oidcmp(E1, E2)
This is only a little slower than the current code, and does
the right thing in all cases. Unfortunately, not all builds
of Coccinelle include python support (including the ones in
Debian). Requiring it may mean that fewer people can easily
run the tool, which is worse than it simply being a little
slower.
We may want to revisit this decision in the future if:
- builds with python become more common
- we find more uses for python support that tip the
cost-benefit analysis
But for now this patch sticks with the angle-bracket
solution, and converts all existing cocci patches. This
fixes only one missed case in the current code, though it
makes a much better difference for some new rules I'm adding
(converting "!hashcmp()" to "hasheq()" misses over half the
possible conversions using the old form).
[1] https://public-inbox.org/git/alpine.DEB.2.21.1808240652370.2344@hadrien/
Helped-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix typos and convert a question which does not expect to be replied
to a simple advice.
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The append_signoff() function takes an "int" to specify the
number of bytes to ignore. Most callers just pass 0, and the
remainder use ignore_non_trailer() to skip over cruft.
That function also returns an int, and uses them internally.
On systems where size_t is larger than an int (i.e., most
64-bit systems), dealing with a ridiculously large commit
message could end up overflowing an int, producing
surprising results (e.g., returning a negative offset, which
would cause us to look outside the original string).
Let's consistently use size_t for these offsets through this
whole stack. As a bonus, this makes the meaning of
"ignore_footer" as an offset (and not a boolean) more clear.
But while we're here, let's also document the interface.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When the sequencer code appends a signoff or cherry-pick
origin, it uses the default trailer-parsing options, which
treat "---" as the end of the commit message. As a result,
it may be fooled by a commit message that contains that
string and fail to find the existing trailer block. Even
more confusing, the actual append code does not know about
"---", and always appends to the end of the string. This can
lead to bizarre results. E.g., appending a signoff to a
commit message like this:
subject
body
---
these dashes confuse the parser!
Signed-off-by: A
results in output with a final block like:
Signed-off-by: A
Signed-off-by: A
The parser thinks the final line of the message is "body",
and ignores everything else, claiming there are no trailers.
So we output an extra newline separator (wrong) and add a
duplicate signoff (also wrong).
Since we know we are feeding a pure commit message, we can
simply tell the parser to ignore the "---" divider.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Most of the trailer code has an "opts" struct which is
filled in by the caller. We don't pass it down to
trailer_info_get(), which does the initial parsing, because
there hasn't yet been a need to do so.
Let's start passing it down in preparation for adding new
options. Note that there's a single caller which doesn't
otherwise have such an options struct. Since it's just one
caller (that we'd have to modify anyway), let's not bother
with any special treatment like accepting a NULL options
struct, and just have it allocate one with the defaults.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We store the length of the trailers list in a size_t. So on
a 64-bit system with a 32-bit int, in the unlikely case that
we manage to actually allocate a list with 2^31 entries,
we'd loop forever trying to iterate over it (our "int" would
wrap to negative before exceeding info->trailer_nr).
This probably doesn't matter in practice. Each entry is at
least a pointer plus a non-empty string, so even without
malloc overhead or the memory to hold the original string
we're parsing from, you'd need to allocate tens of
gigabytes. But it's easy enough to do it right.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase -i", when a 'merge <branch>' insn in its todo list
fails, segfaulted, which has been (minimally) corrected.
* pw/rebase-i-merge-segv-fix:
rebase -i: fix SIGSEGV when 'merge <branch>' fails
t3430: add conflicting commit
When "git rebase -i" is told to squash two or more commits into
one, it labeled the log message for each commit with its number.
It correctly called the first one "1st commit", but the next one
was "commit #1", which was off-by-one. This has been corrected.
* pw/rebase-i-squash-number-fix:
rebase -i: fix numbering in squash message
The more library-ish parts of the codebase learned to work on the
in-core index-state instance that is passed in by their callers,
instead of always working on the singleton "the_index" instance.
* nd/no-the-index: (24 commits)
blame.c: remove implicit dependency on the_index
apply.c: remove implicit dependency on the_index
apply.c: make init_apply_state() take a struct repository
apply.c: pass struct apply_state to more functions
resolve-undo.c: use the right index instead of the_index
archive-*.c: use the right repository
archive.c: avoid access to the_index
grep: use the right index instead of the_index
attr: remove index from git_attr_set_direction()
entry.c: use the right index instead of the_index
submodule.c: use the right index instead of the_index
pathspec.c: use the right index instead of the_index
unpack-trees: avoid the_index in verify_absent()
unpack-trees: convert clear_ce_flags* to avoid the_index
unpack-trees: don't shadow global var the_index
unpack-trees: add a note about path invalidation
unpack-trees: remove 'extern' on function declaration
ls-files: correct index argument to get_convert_attr_ascii()
preload-index.c: use the right index instead of the_index
dir.c: remove an implicit dependency on the_index in pathspec code
...
The "--exec" option to "git rebase --rebase-merges" placed the exec
commands at wrong places, which has been corrected.
* js/rebase-merges-exec-fix:
rebase --exec: make it work with --rebase-merges
t3430: demonstrate what -r, --autosquash & --exec should do
If a merge command in the todo list specifies just a branch to merge
with no -C/-c argument then item->commit is NULL. This means that if
there are merge conflicts error_with_patch() is passed a NULL commit
which causes a segmentation fault when make_patch() tries to look it up.
This commit implements a minimal fix which fixes the crash and allows
the user to successfully commit a conflict resolution with 'git rebase
--continue'. It does not write .git/rebase-merge/patch,
.git/rebase-merge/stopped-sha or update REBASE_HEAD. To sensibly get the
hashes of the merge parents would require refactoring do_merge() to
extract the code that parses the merge parents into a separate function
which error_with_patch() could then use to write the parents into the
stopped-sha file. To create meaningful output make_patch() and 'git
rebase --show-current-patch' would also need to be modified to diff the
merge parent and merge base in this case.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Many more strings are prepared for l10n.
* nd/i18n: (23 commits)
transport-helper.c: mark more strings for translation
transport.c: mark more strings for translation
sha1-file.c: mark more strings for translation
sequencer.c: mark more strings for translation
replace-object.c: mark more strings for translation
refspec.c: mark more strings for translation
refs.c: mark more strings for translation
pkt-line.c: mark more strings for translation
object.c: mark more strings for translation
exec-cmd.c: mark more strings for translation
environment.c: mark more strings for translation
dir.c: mark more strings for translation
convert.c: mark more strings for translation
connect.c: mark more strings for translation
config.c: mark more strings for translation
commit-graph.c: mark more strings for translation
builtin/replace.c: mark more strings for translation
builtin/pack-objects.c: mark more strings for translation
builtin/grep.c: mark strings for translation
builtin/config.c: mark more strings for translation
...
Commit e12a7ef597 ("rebase -i: Handle "combination of <n> commits" with
GETTEXT_POISON", 2018-04-27) changed the way that individual commit
messages are labelled when squashing commits together. In doing so a
regression was introduced where the numbering of the messages is off by
one. This commit fixes that and adds a test for the numbering.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This puts update_main_cache_tree() and write_cache_as_tree() in the
same group of "index compat" functions that assume the_index
implicitly, which should only be used within builtin/ or t/helper.
sequencer.c is also updated to not use these functions. As of now, no
files outside builtin/ use these functions anymore.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead of skip_unnecessary_picks() printing its result to stdout, it
returns it into a struct object_id, as the rewrite of complete_action()
(to come in the next commit) will need it.
rebase--helper then is modified to fit this change.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This rewrites checkout_onto() from shell to C.
A new command (“checkout-onto”) is added to rebase--helper.c. The shell
version is then stripped.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This rewrites (the misnamed) setup_reflog_action() from shell to C. The
new version is called prepare_branch_to_be_rebased().
A new command is added to rebase--helper.c, “checkout-base”, as well as
a new flag, “verbose”, to avoid silencing the output of the checkout
operation called by checkout_base_commit().
The function `run_git_checkout()` will also be used in the next commit,
therefore its code is not part of `checkout_base_commit()`.
The shell version is then stripped in favour of a call to the helper.
As $GIT_REFLOG_ACTION is no longer set at the first call of
checkout_onto(), a call to comment_for_reflog() is added at the
beginning of this function.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This adds a new function, run_command_silent_on_success(), to
redirect the stdout and stderr of a command to a strbuf, and then to run
that command. This strbuf is printed only if the command fails. It is
functionnaly similar to output() from git-rebase.sh.
run_git_commit() is then refactored to use of
run_command_silent_on_success().
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This makes rebase_path_todo(), get_missing_commit_check_level(),
write_message() and the enum check_level accessible outside sequencer.c,
renames check_level to missing_commit_check_level, and prefixes its
value names by MISSING_COMMIT_ to avoid namespace pollution.
This function and this enum will eventually be moved to
rebase-interactive.c and become static again, so no special attention
was given to the naming.
This will be needed for the rewrite of append_todo_help() from shell to
C, as it will be in a new library source file, rebase-interactive.c.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The idea of `--exec` is to append an `exec` call after each `pick`.
Since the introduction of fixup!/squash! commits, this idea was extended
to apply to "pick, possibly followed by a fixup/squash chain", i.e. an
exec would not be inserted between a `pick` and any of its corresponding
`fixup` or `squash` lines.
The current implementation uses a dirty trick to achieve that: it
assumes that there are only pick/fixup/squash commands, and then
*inserts* the `exec` lines before any `pick` but the first, and appends
a final one.
With the todo lists generated by `git rebase --rebase-merges`, this
simple implementation shows its problems: it produces the exact wrong
thing when there are `label`, `reset` and `merge` commands.
Let's change the implementation to do exactly what we want: look for
`pick` lines, skip any fixup/squash chains, and then insert the `exec`
line. Lather, rinse, repeat.
Note: we take pains to insert *before* comment lines whenever possible,
as empty commits are represented by commented-out pick lines (and we
want to insert a preceding pick's exec line *before* such a line, not
afterward).
While at it, also add `exec` lines after `merge` commands, because they
are similar in spirit to `pick` commands: they add new commits.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Single quotes should be escaped as \' not \\'. The bad quoting breaks
the interactive version of 'rebase --root' (which is used when there
is no '--onto' even if the user does not specify --interactive) for
authors that contain "'" as sq_dequote() called by read_author_ident()
errors out on the bad quoting.
For other interactive rebases this only affects external scripts that
read the author script and users whose git is upgraded from the shell
version of rebase -i while rebase was stopped when the author contains
"'". This is because the parsing in read_env_script() expected the
broken quoting.
This patch includes code to handle the broken quoting when
git has been upgraded while rebase was stopped. It does this by
detecting the missing "'" at the end of the GIT_AUTHOR_DATE line to see
if it should dequote \\' as "'". Note this is only implemented for
normal picks, not for creating a new root commit (rebase will stop with
an error complaining out bad quoting in that case).
The fallback code has been manually tested by reverting both the quoting
fixes in write_author_script() and the previous fix for the missing "'"
at the end of the GIT_AUTHOR_DATE line and running
t3404-rebase-interactive.sh.
Ideally rebase and am would share the same code for reading and
writing the author script, but this commit just fixes the immediate
bug.
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Check for a NULL return value from read_author_ident() that indicates
an error. Previously the NULL author was passed to commit_tree() which
would then fallback to using the default author when creating the new
commit. This changed the date and potentially the author of the commit
which corrupted the author data compared to its expected value.
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>
"git rebase" started exporting GIT_DIR environment variable and
exposing it to hook scripts when part of it got rewritten in C.
Instead of matching the old scripted Porcelains' behaviour,
compensate by also exporting GIT_WORK_TREE environment as well to
lessen the damage. This can harm existing hooks that want to
operate on different repository, but the current behaviour is
already broken for them anyway.
* bc/sequencer-export-work-tree-as-well:
sequencer: pass absolute GIT_WORK_TREE to exec commands
"git rebase --rebase-merges" mode now handles octopus merges as
well.
* js/rebase-merge-octopus:
rebase --rebase-merges: adjust man page for octopus support
rebase --rebase-merges: add support for octopus merges
merge: allow reading the merge commit message from a file
read_author_ident() is careful to handle errors "gently" when parsing
"rebase-merge/author-script" by printing a suitable warning and
returning NULL; it never die()'s. One possible reason that parsing might
fail is that "rebase-merge/author-script" has been hand-edited in such a
way which corrupts it or the information it contains.
However, read_author_ident() invokes fmt_ident() which is not so careful
about failing "gently". It will die() if it encounters a malformed
timestamp. Since read_author_ident() doesn't want to die() and since
it's dealing with possibly hand-edited data, take care to avoid passing
a bogus timestamp to fmt_ident().
A more "correctly engineered" fix would be to add a "gentle" version of
fmt_ident(), however, such a change it outside the scope of the bug-fix
series. If fmt_ident() ever does grow a "gentle" cousin, then the manual
timestamp check added here can be retired.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When "git rebase -i --root" creates a new root commit, it corrupts the
"author" header's timestamp by prepending a "@":
author A U Thor <author@example.com> @1112912773 -0700
The commit parser is very strict about the format of the "author"
header, and does not allow a "@" in that position.
The "@" comes from GIT_AUTHOR_DATE in "rebase-merge/author-script",
signifying a Unix epoch-based timestamp, however, read_author_ident()
incorrectly allows it to slip into the commit's "author" header, thus
corrupting it.
One possible fix would be simply to filter out the "@" when constructing
the "author" header timestamp, however, a more correct fix is to parse
the GIT_AUTHOR_DATE date (via parse_date()) and format the parsed result
into the "author" header. Since "rebase-merge/author-script" may be
edited by the user, this approach has the extra benefit of catching
other potential timestamp corruption due to hand-editing.
We can do better than calling parse_date() ourselves and constructing
the "author" header manually, however, by instead taking advantage of
fmt_ident() which does this work for us.
The benefits of using fmt_ident() are twofold. First, it simplifies the
logic considerably by allowing us to avoid the complexity of building
the "author" header in parallel with and in the same buffer from which
"rebase-merge/author-script" is being parsed. Instead, fmt_ident() is
invoked to compose the header after parsing is complete.
Second, fmt_ident() is careful to prevent "crud" from polluting the
composed ident. As with validating GIT_AUTHOR_DATE, this "crud"
avoidance prevents other (possibly hand-edited) bogus author information
from "rebase-merge/author-script" from corrupting the commit object.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When "git rebase -i --root" creates a new root commit, it corrupts the
"author" header's timezone by repeating the last digit:
author A U Thor <author@example.com> @1112912773 -07000
This is due to two bugs.
First, write_author_script() neglects to add the closing quote to the
value of GIT_AUTHOR_DATE when generating "rebase-merge/author-script".
Second, although sq_dequote() correctly diagnoses the missing closing
quote, read_author_ident() ignores sq_dequote()'s return value and
blindly uses the result of the aborted dequote.
sq_dequote() performs dequoting in-place by removing quoting and
shifting content downward. When it detects misquoting (lack of closing
quote, in this case), it gives up and returns an error without inserting
a NUL-terminator at the end of the shifted content, which explains the
duplicated last digit in the timezone.
(Note that the "@" preceding the timestamp is a separate bug which
will be fixed subsequently.)
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When "git rebase -i --root" creates a new root commit (say, by swapping
in a different commit for the root), it corrupts the commit's "author"
header with trailing garbage:
author A U Thor <author@example.com> @1112912773 -07000or@example.com
This is a result of read_author_ident() neglecting to NUL-terminate the
buffer into which it composes the "author" header.
(Note that the "@" preceding the timestamp and the extra "0" in the
timezone are separate bugs which will be fixed subsequently.)
Security considerations: Construction of the "author" header by
read_author_ident() happens in-place and in parallel with parsing the
content of "rebase-merge/author-script" which occupies the same buffer.
This is possible because the constructed "author" header is always
smaller than the content of "rebase-merge/author-script". Despite
neglecting to NUL-terminate the constructed "author" header, memory is
never accessed (either by read_author_ident() or its caller) beyond the
allocated buffer since a NUL-terminator is present at the end of the
loaded "rebase-merge/author-script" content, and additional NUL's are
inserted as part of the parsing process.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
