Change several commands to remove ignored files by default when they are
in the way. Since some commands (checkout, merge) take a
--no-overwrite-ignore option to allow the user to configure this, and it
may make sense to add that option to more commands (and in the case of
merge, actually plumb that configuration option through to more of the
backends than just the fast-forwarding special case), add little
comments about where such flags would be used.
Incidentally, this fixes a test failure in t7112.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, every caller of unpack_trees() that wants to ensure ignored
files are overwritten by default needs to:
* allocate unpack_trees_options.dir
* flip the DIR_SHOW_IGNORED flag in unpack_trees_options.dir->flags
* call setup_standard_excludes
AND then after the call to unpack_trees() needs to
* call dir_clear()
* deallocate unpack_trees_options.dir
That's a fair amount of boilerplate, and every caller uses identical
code. Make this easier by instead introducing a new boolean value where
the default value (0) does what we want so that new callers of
unpack_trees() automatically get the appropriate behavior. And move all
the handling of unpack_trees_options.dir into unpack_trees() itself.
While preserve_ignored = 0 is the behavior we feel is the appropriate
default, we defer fixing commands to use the appropriate default until a
later commit. So, this commit introduces several locations where we
manually set preserve_ignored=1. This makes it clear where code paths
were previously preserving ignored files when they should not have been;
a future commit will flip these to instead use a value of 0 to get the
behavior we want.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use the new hook_exists() function instead of find_hook() where the
latter was called in boolean contexts. This make subsequent changes in
a series where we further refactor the hook API clearer, as we won't
conflate wanting to get the path of the hook with checking for its
existence.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move the find_hook() function from run-command.c to a new hook.c
library. This change establishes a stub library that's pretty
pointless right now, but will see much wider use with Emily Shaffer's
upcoming "configuration-based hooks" series.
Eventually all the hook related code will live in hook.[ch]. Let's
start that process by moving the simple find_hook() function over
as-is.
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
54fd3243da ("rebase -i: reread the todo list if `exec` touched it",
2017-04-26) sought to reread the todo list after running an exec
command only if it had been changed. To accomplish this it checks the
stat data of the todo list after running an exec command to see if it
has changed. Unfortunately there are two problems, firstly the
implementation is buggy we actually reread the list after each exec
which is quadratic in the number of commit lookups and secondly the
design is predicated on using nanosecond time stamps which are not the
default.
The implementation bug stems from the fact that we write a new todo
list to disk before running each command but do not update the stat
data to reflect this[1].
The design problem is that it is possible for the user to edit the
todo list without changing its size or inode which means we have to
rely on the mtime to tell us if it has changed. Unfortunately unless
git is built with USE_NSEC it is possible for the original and edited
list to share the same mtime.
Ideally "git rebase --edit-todo" would set a flag that we would then
check in sequencer.c. Unfortunately this is approach will not work as
there are scripts in the wild that write to the todo list directly
without running "git rebase --edit-todo". Instead of relying on stat
data this patch simply reads the possibly edited todo list and
compares it to the original with memcmp(). This is much faster than
reparsing the todo list each time. This patch reduces the time to run
git rebase -r -xtrue v2.32.0~100 v2.32.0
which runs 419 exec commands by 6.6%. For comparison fixing the
implementation bug in stat based approach reduces the time by a
further 1.4% and is indistinguishable from never rereading the todo
list.
[1] https://lore.kernel.org/git/20191125131833.GD23183@szeder.dev/
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>
This code is heavily indented and obscures the high level logic within
the loop. Let's move it to its own function before modifying it in the
next commit. Note that there is a subtle change in behavior if the
todo list cannot be reread. Previously todo_list->current was
incremented before returning, now it returns immediately.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Various mergy operations have been prepared to work efficiently
with the sparse index.
* ds/mergies-with-sparse-index:
sparse-index: integrate with cherry-pick and rebase
sequencer: ensure full index if not ORT strategy
t1092: add cherry-pick, rebase tests
merge-ort: expand only for out-of-cone conflicts
merge: make sparse-aware with ORT
diff: ignore sparse paths in diffstat
Code clean up to migrate callers from older advice_config[] based
API to newer advice_if_enabled() and advice_enabled() API.
* ab/retire-advice-config:
advice: move advice.graftFileDeprecated squashing to commit.[ch]
advice: remove use of global advice_add_embedded_repo
advice: remove read uses of most global `advice_` variables
advice: add enum variants for missing advice variables
The advice message that "git cherry-pick" gives when it asks
conflicted replay of a commit to be resolved by the end user has
been updated.
* zh/cherry-pick-advice:
cherry-pick: use better advice message
"git rebase" by default skips changes that are equivalent to
commits that are already in the history the branch is rebased onto;
give messages when this happens to let the users be aware of
skipped commits, and also teach them how to tell "rebase" to keep
duplicated changes.
* js/advise-when-skipping-cherry-picked:
sequencer: advise if skipping cherry-picked commit
The sequencer is used by 'cherry-pick' and 'rebase' to sequence a list
of operations that modify the index. Since we intend to remove the need
for 'command_requires_full_index', we need to ensure the sparse index is
expanded every time it is written to disk between these steps. That is,
unless the merge strategy is 'ort' where the index can remain sparse
throughout.
There are two main places to be extra careful about a full index:
1. Right before calling merge_trees(), ensure the index is full. This
happens within an 'else' where the 'if' block checks if the 'ort'
strategy is selected.
2. During read_and_refresh_cache(), the index might be written to disk
and converted to sparse in the process. Ensure it expands back to
full afterwards by checking if the strategy is _not_ 'ort'. This
'if' statement is the logical negation of the 'if' in item (1).
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function to add the `exec` commands to the todo list only needed to
be public API because it was not only used internally by the sequencer,
but also by `git rebase --preserve-merges`.
Now that that mode has been removed, we no longer need that function to
be scoped publicly.
Helped-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Various bugs in "git rebase -r" have been fixed.
* pw/rebase-r-fixes:
rebase -r: fix merge -c with a merge strategy
rebase -r: don't write .git/MERGE_MSG when fast-forwarding
rebase -i: add another reword test
rebase -r: make 'merge -c' behave like reword
Checking out all the paths from HEAD during the last conflicted
step in "git rebase" and continuing would cause the step to be
skipped (which is expected), but leaves MERGE_MSG file behind in
$GIT_DIR and confuses the next "git commit", which has been
corrected.
* pw/rebase-skip-final-fix:
rebase --continue: remove .git/MERGE_MSG
rebase --apply: restore some tests
t3403: fix commit authorship
Silently skipping commits when rebasing with --no-reapply-cherry-picks
(currently the default behavior) can cause user confusion. Issue
warnings when this happens, as well as advice on how to preserve the
skipped commits.
These warnings and advice are displayed only when using the (default)
"merge" rebase backend.
Update the git-rebase docs to mention the warnings and advice.
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use `ort` instead of `recursive` as the default merge strategy.
* en/ort-becomes-the-default:
Update docs for change of default merge backend
Change default merge backend from recursive to ort
Documentation updates.
* en/merge-strategy-docs:
Update error message and code comment
merge-strategies.txt: add coverage of the `ort` merge strategy
git-rebase.txt: correct out-of-date and misleading text about renames
merge-strategies.txt: fix simple capitalization error
merge-strategies.txt: avoid giving special preference to patience algorithm
merge-strategies.txt: do not imply using copy detection is desired
merge-strategies.txt: update wording for the resolve strategy
Documentation: edit awkward references to `git merge-recursive`
directory-rename-detection.txt: small updates due to merge-ort optimizations
git-rebase.txt: correct antiquated claims about --rebase-merges
In c4a09cc9cc (Merge branch 'hw/advise-ng', 2020-03-25), a new API for
accessing advice variables was introduced and deprecated `advice_config`
in favor of a new array, `advice_setting`.
This patch ports all but two uses which read the status of the global
`advice_` variables over to the new `advice_enabled` API. We'll deal
with advice_add_embedded_repo and advice_graft_file_deprecated
separately.
Signed-off-by: Ben Boeckel <mathstuf@gmail.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Pathname expansion (like "~username/") learned a way to specify a
location relative to Git installation (e.g. its $sharedir which is
$(prefix)/share), with "%(prefix)".
* js/expand-runtime-prefix:
expand_user_path: allow in-flight topics to keep using the old name
interpolate_path(): allow specifying paths relative to the runtime prefix
Use a better name for the function interpolating paths
expand_user_path(): clarify the role of the `real_home` parameter
expand_user_path(): remove stale part of the comment
tests: exercise the RUNTIME_PREFIX feature
"git cherry-pick", upon seeing a conflict, says:
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit'
as if running "git commit" to conclude the resolution of
this single step were the end of the story. This stems from
the fact that the command originally was to pick a single
commit and not a range of commits, and the message was
written back then and has not been adjusted.
When picking a range of commits and the command stops with a
conflict in the middle of the range, however, after
resolving the conflict and (optionally) recording the result
with "git commit", the user has to run "git cherry-pick
--continue" to have the rest of the range dealt with,
"--skip" to drop the current commit, or "--abort" to discard
the series.
Suggest use of "git cherry-pick --continue/--skip/--abort"
so that the message also covers the case where a range of
commits are being picked.
Similarly, this optimization can be applied to git revert,
suggest use of "git revert --continue/--skip/--abort" so
that the message also covers the case where a range of
commits are being reverted.
It is worth mentioning that now we use advice() to print
the content of GIT_CHERRY_PICK_HELP in print_advice(), each
line of output will start with "hint: ".
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Hariom Verma <hariom18599@gmail.com>
Helped-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: ZheNing Hu <adlternative@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If a rebase is started with a --strategy option other than "ort" or
"recursive" then "merge -c" does not allow the user to reword the
commit message.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When fast-forwarding we do not create a new commit so .git/MERGE_MSG
is not removed and can end up seeding the message of a commit made
after the rebase has finished. Avoid writing .git/MERGE_MSG when we
are fast-forwarding by writing the file after the fast-forward
checks. Note that there are no changes to the fast-forward code, it is
simply moved.
Note that the way this change is implemented means we no longer write
the author script when fast-forwarding either. I believe this is safe
for the reasons below but it is a departure from what we do when
fast-forwarding a non-merge commit. If we reword the merge then 'git
commit --amend' will keep the authorship of the commit we're rewording
as it ignores GIT_AUTHOR_* unless --reset-author is passed. It will
also export the correct GIT_AUTHOR_* variables to any hooks and we
already test the authorship of the reworded commit. If we are not
rewording then we no longer call spilt_ident() which means we are no
longer checking the commit author header looks sane. However this is
what we already do when fast-forwarding non-merge commits in
skip_unnecessary_picks() so I don't think we're breaking any promises
by not checking the author here.
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>
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]. For this reason the reword command ensures
that there are no uncommitted changes when rewording. The reword
command also allows the user to edit the todo list while the rebase is
paused. As 'merge -c' also rewords commits make it behave like reword
and add a test.
[1] https://lore.kernel.org/git/xmqqlfvu4be3.fsf@gitster-ct.c.googlers.com/T/#m133009cb91cf0917bcf667300f061178be56680a
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the user skips the final commit by removing all the changes from
the index and worktree with 'git restore' (or read-tree) and then runs
'git rebase --continue' .git/MERGE_MSG is left behind. This will seed
the commit message the next time the user commits which is not what we
want to happen.
Reported-by: Victor Gambier <vgambier@excilys.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are a few reasons to switch the default:
* Correctness
* Extensibility
* Performance
I'll provide some summaries about each.
=== Correctness ===
The original impetus for a new merge backend was to fix issues that were
difficult to fix within recursive's design. The success with this goal
is perhaps most easily demonstrated by running the following:
$ git grep -2 KNOWN_FAILURE t/ | grep -A 4 GIT_TEST_MERGE_ALGORITHM
$ git grep test_expect_merge_algorithm.failure.success t/
$ git grep test_expect_merge_algorithm.success.failure t/
In order, these greps show:
* Seven sets of submodule tests (10 total tests) that fail with
recursive but succeed with ort
* 22 other tests that fail with recursive, but succeed with ort
* 0 tests that pass with recursive, but fail with ort
=== Extensibility ===
Being able to perform merges without touching the working tree or index
makes it possible to create new features that were difficult with the
old backend:
* Merging, cherry-picking, rebasing, reverting in bare repositories...
or just on branches that aren't checked out.
* `git diff AUTO_MERGE` -- ability to see what changes the user has
made to resolve conflicts so far (see commit 5291828df8 ("merge-ort:
write $GIT_DIR/AUTO_MERGE whenever we hit a conflict", 2021-03-20)
* A --remerge-diff option for log/show, used to show diffs for merges
that display the difference between what an automatic merge would
have created and what was recorded in the merge. (This option will
often result in an empty diff because many merges are clean, but for
the non-clean ones it will show how conflicts were fixed including
the removal of conflict markers, and also show additional changes
made outside of conflict regions to e.g. fix semantic conflicts.)
* A --remerge-diff-only option for log/show, similar to --remerge-diff
but also showing how cherry-picks or reverts differed from what an
automatic cherry-pick or revert would provide.
The last three have been implemented already (though only one has been
submitted upstream so far; the others were waiting for performance work
to complete), and I still plan to implement the first one.
=== Performance ===
I'll quote from the summary of my final optimization for merge-ort
(while fixing the testcase name from 'no-renames' to 'few-renames'):
Timings
Infinite
merge- merge- Parallelism
recursive recursive of rename merge-ort
v2.30.0 current detection current
---------- --------- ----------- ---------
few-renames: 18.912 s 18.030 s 11.699 s 198.3 ms
mega-renames: 5964.031 s 361.281 s 203.886 s 661.8 ms
just-one-mega: 149.583 s 11.009 s 7.553 s 264.6 ms
Speedup factors
Infinite
merge- merge- Parallelism
recursive recursive of rename
v2.30.0 current detection merge-ort
---------- --------- ----------- ---------
few-renames: 1 1.05 1.6 95
mega-renames: 1 16.5 29 9012
just-one-mega: 1 13.6 20 565
And, for partial clone users:
Factor reduction in number of objects needed
Infinite
merge- merge- Parallelism
recursive recursive of rename
v2.30.0 current detection merge-ort
---------- --------- ----------- ---------
mega-renames: 1 1 1 181.3
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There were two locations in the code that referred to 'merge-recursive'
but which were also applicable to 'merge-ort'. Update them to more
general wording.
Acked-by: Derrick Stolee <dstolee@microsoft.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is not immediately clear what `expand_user_path()` means, so let's
rename it to `interpolate_path()`. This also opens the path for
interpolating more than just a home directory.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add missing __attribute__((format)) function attributes to various
"static" functions that take printf arguments.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move the reflog_message() function added in
96e832a5fd (sequencer (rebase -i): refactor setting the reflog
message, 2017-01-02), it gained another user in
9055e401dd (sequencer: introduce new commands to reset the revision,
2018-04-25). Let's move it around and remove the forward declaration
added in the latter commit.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
SHA-256 transition.
* bc/hash-transition-interop-part-1:
hex: print objects using the hash algorithm member
hex: default to the_hash_algo on zero algorithm value
builtin/pack-objects: avoid using struct object_id for pack hash
commit-graph: don't store file hashes as struct object_id
builtin/show-index: set the algorithm for object IDs
hash: provide per-algorithm null OIDs
hash: set, copy, and use algo field in struct object_id
builtin/pack-redundant: avoid casting buffers to struct object_id
Use the final_oid_fn to finalize hashing of object IDs
hash: add a function to finalize object IDs
http-push: set algorithm when reading object ID
Always use oidread to read into struct object_id
hash: add an algo member to struct object_id
"git rebase --[no-]reschedule-failed-exec" did not work well with
its configuration variable, which has been corrected.
* ab/rebase-no-reschedule-failed-exec:
rebase: don't override --no-reschedule-failed-exec with config
rebase tests: camel-case rebase.rescheduleFailedExec consistently
Up until recently, object IDs did not have an algorithm member, only a
hash. Consequently, it was possible to share one null (all-zeros)
object ID among all hash algorithms. Now that we're going to be
handling objects from multiple hash algorithms, it's important to make
sure that all object IDs have a correct algorithm field.
Introduce a per-algorithm null OID, and add it to struct hash_algo.
Introduce a wrapper function as well, and use it everywhere we used to
use the null_oid constant.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Plug the ort merge backend throughout the rest of the system, and
start testing it as a replacement for the recursive backend.
* en/ort-readiness:
Add testing with merge-ort merge strategy
t6423: mark remaining expected failure under merge-ort as such
Revert "merge-ort: ignore the directory rename split conflict for now"
merge-recursive: add a bunch of FIXME comments documenting known bugs
merge-ort: write $GIT_DIR/AUTO_MERGE whenever we hit a conflict
t: mark several submodule merging tests as fixed under merge-ort
merge-ort: implement CE_SKIP_WORKTREE handling with conflicted entries
t6428: new test for SKIP_WORKTREE handling and conflicts
merge-ort: support subtree shifting
merge-ort: let renormalization change modify/delete into clean delete
merge-ort: have ll_merge() use a special attr_index for renormalization
merge-ort: add a special minimal index just for renormalization
merge-ort: use STABLE_QSORT instead of QSORT where required
Fix a bug in how --no-reschedule-failed-exec interacts with
rebase.rescheduleFailedExec=true being set in the config. Before this
change the --no-reschedule-failed-exec config option would be
overridden by the config.
This bug happened because of the particulars of how "rebase" works
v.s. most other git commands when it comes to parsing options and
config:
When we read the config and parse the CLI options we correctly prefer
the --no-reschedule-failed-exec option over
rebase.rescheduleFailedExec=true in the config. So far so good.
However the --reschedule-failed-exec option doesn't take effect when
the rebase starts (we'd just create a
".git/rebase-merge/reschedule-failed-exec" file if it was true). It
only takes effect when the exec command fails, at which point we'll
reschedule the failed "exec" command.
Since we only wrote out the positive
".git/rebase-merge/reschedule-failed-exec" under
--reschedule-failed-exec, but nothing with --no-reschedule-failed-exec
we'll forget that we asked not to reschedule failed "exec", and would
happily re-read the config and see that
rebase.rescheduleFailedExec=true is set.
So the config will effectively override the user having explicitly
disabled the option on the command-line.
Even more confusingly: Since rebase accepts different options based on
its state there wasn't even a way to get around this with "rebase
--continue --no-reschedule-failed-exec" (but you could of course set
the config with "rebase -c ...").
I think the least bad way out of this is to declare that for such
options and config whatever we decide at the beginning of the rebase
goes. So we'll now always create either a "reschedule-failed-exec" or
a "no-reschedule-failed-exec file at the start, not just the former if
we decided we wanted the feature.
With this new worldview you can no longer change the setting once a
rebase has started except by manually removing the state files
discussed above. I think making it work like that is the the least
confusing thing we can do.
In the future we might want to learn to change the setting in the
middle by combining "--edit-todo" with
"--[no-]reschedule-failed-exec", we currently don't support combining
those options, or any other way to change the state in the middle of
the rebase short of manually editing the files in
".git/rebase-merge/*".
The bug being fixed here originally came about because of a
combination of the behavior of the code added in d421afa0c6 (rebase:
introduce --reschedule-failed-exec, 2018-12-10) and the addition of
the config variable in 969de3ff0e (rebase: add a config option to
default to --reschedule-failed-exec, 2018-12-10).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git cherry-pick/revert" with or without "--[no-]edit" did not spawn
the editor as expected (e.g. "revert --no-edit" after a conflict
still asked to edit the message), which has been corrected.
* en/sequencer-edit-upon-conflict-fix:
sequencer: fix edit handling for cherry-pick and revert messages
save_opts() should save any non-default values. It was intended to do
this, but since most options in struct replay_opts default to 0, it only
saved non-zero values. Unfortunately, this does not always work for
options.edit. Roughly speaking, options.edit had a default value of 0
for cherry-pick but a default value of 1 for revert. Make save_opts()
record a value whenever it differs from the default.
options.edit was also overly simplistic; we had more than two cases.
The behavior that previously existed was as follows:
Non-conflict commits Right after Conflict
revert Edit iff isatty(0) Edit (ignore isatty(0))
cherry-pick No edit See above
Specify --edit Edit (ignore isatty(0)) See above
Specify --no-edit (*) See above
(*) Before stopping for conflicts, No edit is the behavior. After
stopping for conflicts, the --no-edit flag is not saved so see
the first two rows.
However, the expected behavior is:
Non-conflict commits Right after Conflict
revert Edit iff isatty(0) Edit iff isatty(0)
cherry-pick No edit Edit iff isatty(0)
Specify --edit Edit (ignore isatty(0)) Edit (ignore isatty(0))
Specify --no-edit No edit No edit
In order to get the expected behavior, we need to change options.edit
to a tri-state: unspecified, false, or true. When specified, we follow
what it says. When unspecified, we need to check whether the current
commit being created is resolving a conflict as well as consulting
options.action and isatty(0). While at it, add a should_edit() utility
function that compresses options.edit down to a boolean based on the
additional information for the non-conflict case.
continue_single_pick() is the function responsible for resuming after
conflict cases, regardless of whether there is one commit being picked
or many. Make this function stop assuming edit behavior in all cases,
so that it can correctly handle !isatty(0) and specific requests to not
edit the commit message.
Reported-by: Renato Botelho <garga@freebsd.org>
Signed-off-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git commit --fixup=<commit>", which was to tweak the changes made
to the contents while keeping the original log message intact,
learned "--fixup=(amend|reword):<commit>", that can be used to
tweak both the message and the contents, and only the message,
respectively.
* cm/rebase-i-fixup-amend-reword:
doc/git-commit: add documentation for fixup=[amend|reword] options
t3437: use --fixup with options to create amend! commit
t7500: add tests for --fixup=[amend|reword] options
commit: add a reword suboption to --fixup
commit: add amend suboption to --fixup to create amend! commit
sequencer: export and rename subject_length()
Follow-up fixes to "cm/rebase-i" topic.
* cm/rebase-i-updates:
doc/rebase -i: fix typo in the documentation of 'fixup' command
t/t3437: fixup the test 'multiple fixup -c opens editor once'
t/t3437: use named commits in the tests
t/t3437: simplify and document the test helpers
t/t3437: check the author date of fixed up commit
t/t3437: remove the dependency of 'expected-message' file from tests
t/t3437: fixup here-docs in the 'setup' test
t/lib-rebase: update the documentation of FAKE_LINES
rebase -i: clarify and fix 'fixup -c' rebase-todo help
sequencer: rename a few functions
sequencer: fixup the datatype of the 'flag' argument
"rebase -i" is getting cleaned up and also enhanced.
* cm/rebase-i:
doc/git-rebase: add documentation for fixup [-C|-c] options
rebase -i: teach --autosquash to work with amend!
t3437: test script for fixup [-C|-c] options in interactive rebase
rebase -i: add fixup [-C | -c] command
sequencer: use const variable for commit message comments
sequencer: pass todo_item to do_pick_commit()
rebase -i: comment out squash!/fixup! subjects from squash message
sequencer: factor out code to append squash message
rebase -i: only write fixup-message when it's needed
There are a variety of questions users might ask while resolving
conflicts:
* What changes have been made since the previous (first) parent?
* What changes are staged?
* What is still unstaged? (or what is still conflicted?)
* What changes did I make to resolve conflicts so far?
The first three of these have simple answers:
* git diff HEAD
* git diff --cached
* git diff
There was no way to answer the final question previously. Adding one
is trivial in merge-ort, since it works by creating a tree representing
what should be written to the working copy complete with conflict
markers. Simply write that tree to .git/AUTO_MERGE, allowing users to
answer the fourth question with
* git diff AUTO_MERGE
I avoided using a name like "MERGE_AUTO", because that would be
merge-specific (much like MERGE_HEAD, REBASE_HEAD, REVERT_HEAD,
CHERRY_PICK_HEAD) and I wanted a name that didn't change depending on
which type of operation the merge was part of.
Ensure that paths which clean out other temporary operation-specific
files (e.g. CHERRY_PICK_HEAD, MERGE_MSG, rebase-merge/ state directory)
also clean out this AUTO_MERGE file.
Signed-off-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This function can be used in other parts of git. Let's move the
function to commit.c and also rename it to make the name of the
function more generic.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add and apply a semantic patch for converting code that open-codes
CALLOC_ARRAY to use it instead. It shortens the code and infers the
element size automatically.
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Cleaning various codepaths up.
* ds/more-index-cleanups:
t1092: test interesting sparse-checkout scenarios
test-lib: test_region looks for trace2 regions
sparse-checkout: load sparse-checkout patterns
name-hash: use trace2 regions for init
repository: add repo reference to index_state
fsmonitor: de-duplicate BUG()s around dirty bits
cache-tree: extract subtree_pos()
cache-tree: simplify verify_cache() prototype
cache-tree: clean up cache_tree_update()
Rename functions to make them more descriptive and while at it, remove
unnecessary 'inline' of the skip_fixupish() function.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As 'flag' is a combination of bits, so change its datatype from
'enum todo_item_flags' to 'unsigned'.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the commit subject starts with "amend!" then rearrange it like a
"fixup!" commit and replace `pick` command with `fixup -C` command,
which is used to fixup up the content if any and replaces the original
commit message with amend! commit's message.
Original-patch-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add options to `fixup` command to fixup both the commit contents and
message. `fixup -C` command is used to replace the original commit
message and `fixup -c`, additionally allows to edit the commit message.
Original-patch-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This makes it easier to use and reuse the comments.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As an additional member of the structure todo_item will be required in
future commits pass the complete structure.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When squashing commit messages the squash!/fixup! subjects are not of
interest so comment them out to stop them becoming part of the final
message.
This change breaks a bunch of --autosquash tests which rely on the
"squash! <subject>" line appearing in the final commit message. This is
addressed by adding a second line to the commit message of the "squash!
..." commits and testing for that.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 6e98de72c0 (sequencer (rebase -i): add support for the 'fixup' and
'squash' commands, 2017-01-02), this developer introduced a change of
behavior by mistake: when encountering a `fixup!` commit (or multiple
`fixup!` commits) without any `squash!` commit thrown in, the final `git
commit` was invoked with `--cleanup=strip`. Prior to that commit, the
commit command had been called without that `--cleanup` option.
Since we explicitly read the original commit message from a file in that
case, there is really no sense in forcing that clean-up.
We actually need to actively suppress that clean-up lest a configured
`commit.cleanup` may interfere with what we want to do: leave the commit
message unchanged.
Reported-by: Vojtěch Knyttl <vojtech@knyt.tl>
Helped-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make the method safer by allocating a cache_tree member for the given
index_state if it is not already present. This is preferrable to a
BUG() statement or returning with an error because future callers will
want to populate an empty cache-tree using this method.
Callers can also remove their conditional allocations of cache_tree.
Also drop local variables that can be found directly from the 'istate'
parameter.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This code is going to grow over the next two commits so move it to
its own function.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The file "$GIT_DIR/rebase-merge/fixup-message" is only used for fixup
commands, there's no point in writing it for squash commands as it is
immediately deleted.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A specialization of hashmap that uses a string as key has been
introduced. Hopefully it will see wider use over time.
* en/strmap:
shortlog: use strset from strmap.h
Use new HASHMAP_INIT macro to simplify hashmap initialization
strmap: take advantage of FLEXPTR_ALLOC_STR when relevant
strmap: enable allocations to come from a mem_pool
strmap: add a strset sub-type
strmap: split create_entry() out of strmap_put()
strmap: add functions facilitating use as a string->int map
strmap: enable faster clearing and reusing of strmaps
strmap: add more utility functions
strmap: new utility functions
hashmap: provide deallocation function names
hashmap: introduce a new hashmap_partial_clear()
hashmap: allow re-use after hashmap_free()
hashmap: adjust spacing to fix argument alignment
hashmap: add usage documentation explaining hashmap_free[_entries]()
Preparation for a new merge strategy.
* en/merge-ort-api-null-impl:
merge,rebase,revert: select ort or recursive by config or environment
fast-rebase: demonstrate merge-ort's API via new test-tool command
merge-ort-wrappers: new convience wrappers to mimic the old merge API
merge-ort: barebones API of new merge strategy with empty implementation
"git rebase -i" did not store ORIG_HEAD correctly.
* pw/rebase-i-orig-head:
rebase -i: simplify get_revision_ranges()
rebase -i: use struct object_id when writing state
rebase -i: use struct object_id rather than looking up commit
rebase -i: stop overwriting ORIG_HEAD buffer
Recently the format of an internal state file "rebase -i" uses has
been tightened up for consistency, which would hurt those who start
"rebase -i" with old git and then continue with new git. Loosen
the reader side a bit (which we may want to tighten again in a year
or so).
* jc/sequencer-stopped-sha-simplify:
sequencer: tolerate abbreviated stopped-sha file
Rather than passing a string around pass the struct object_id that the
string was created from call oid_hex() when we write the file.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We already have a struct object_id containing the oid that we want to
set ORIG_HEAD to so use that rather than converting it to a string and
then calling get_oid() on that string.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow the testsuite to run where it treats requests for "recursive" or
the default merge algorithm via consulting the environment variable
GIT_TEST_MERGE_ALGORITHM which is expected to either be "recursive" (the
old traditional algorithm) or "ort" (the new algorithm).
Also, allow folks to pick the new algorithm via config setting. It
turns out builtin/merge.c already had a way to allow users to specify a
different default merge algorithm: pull.twohead. Rather odd
configuration name (especially to be in the 'pull' namespace rather than
'merge') but it's there. Add that same configuration to rebase,
cherry-pick, and revert.
This required updating the various callsites that called merge_trees()
or merge_recursive() to conditionally call the new API, so this serves
as another demonstration of what the new API looks and feels like.
There are almost certainly some callsites that have not yet been
modified to work with the new merge algorithm, but this represents the
ones that I have been testing with thus far.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase --rebase-merges" did not correctly pass --gpg-sign
command line option to underlying "git merge" when replaying a merge
using non-default merge strategy or when replaying an octopus merge
(because replaying a two-head merge with the default strategy was
done in a separate codepath, the problem did not trigger for most
users), which has been corrected.
* sc/sequencer-gpg-octopus:
t3435: add tests for rebase -r GPG signing
sequencer: pass explicit --no-gpg-sign to merge
sequencer: fix gpg option passed to merge subcommand
hashmap_free(), hashmap_free_entries(), and hashmap_free_() have existed
for a while, but aren't necessarily the clearest names, especially with
hashmap_partial_clear() being added to the mix and lazy-initialization
now being supported. Peff suggested we adopt the following names[1]:
- hashmap_clear() - remove all entries and de-allocate any
hashmap-specific data, but be ready for reuse
- hashmap_clear_and_free() - ditto, but free the entries themselves
- hashmap_partial_clear() - remove all entries but don't deallocate
table
- hashmap_partial_clear_and_free() - ditto, but free the entries
This patch provides the new names and converts all existing callers over
to the new naming scheme.
[1] https://lore.kernel.org/git/20201030125059.GA3277724@coredump.intra.peff.net/
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 2.29, "--committer-date-is-author-date" option of "rebase" and
"am" subcommands lost the e-mail address by mistake, which has been
corrected.
* jk/committer-date-is-author-date-fix:
rebase: fix broken email with --committer-date-is-author-date
am: fix broken email with --committer-date-is-author-date
t3436: check --committer-date-is-author-date result more carefully
For the --committer-date-is-author-date option of git-am and git-rebase,
we format the committer ident, then re-parse it to find the name and
email, and then feed those back to fmt_ident().
We can simplify this by handling it all at the time of the fmt_ident()
call. We pass in the appropriate getenv() results, and if they're not
present, then our WANT_COMMITTER_IDENT flag tells fmt_ident() to fill in
the appropriate value from the config. Which is exactly what
git_committer_ident() was doing under the hood.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 7573cec52c (rebase -i: support --committer-date-is-author-date,
2020-08-17) copied the committer ident-parsing code from builtin/am.c.
And in doing so, it copied a bug in which we always set the email to an
empty string. We fixed the version in git-am in the previous commit;
this commit fixes the copied code.
Reported-by: VenomVendor <info@venomvendor.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 0512eabd91 ("sequencer: stop abbreviating stopped-sha file",
2020-09-25), Git was taught both to write full object names to the
stopped-sha file and to require full object names when reading. However,
a user would experience a problem if they started an interactive rebase
using an old version of Git and then continued with a current version of
Git (for example, if the system version of Git was updated in the
meantime).
Teach Git to allow object names of any length when reading.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 2b6ad0f4bc ("rebase --rebase-merges: add support for octopus
merges", 2017-12-21) introduced a case where rollback_lock_file() was
unconditionally called twice in a row with no intervening commands.
Remove the duplicate.
Signed-off-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The merge subcommand launched for merges with non-default strategy would
use its own default behaviour to decide how to sign commits, regardless
of what opts->gpg_sign was set to. For example the --no-gpg-sign flag
given to rebase explicitly would get ignored, if commit.gpgsign was set
to true.
Fix the issue and add a test case excercising this behaviour.
Signed-off-by: Samuel Čavoj <samuel@cavoj.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When performing a rebase with --rebase-merges using either a custom
strategy specified with -s or an octopus merge, and at the same time
having gpgsign enabled (either rebase -S or config commit.gpgsign), the
operation would fail on making the merge commit. Instead of "-S%s" with
the key id substituted, only the bare key id would get passed to the
underlying merge command, which tried to interpret it as a ref.
Fix the issue and add test cases as suggested by Johannes Schindelin and
Junio C Hamano.
Signed-off-by: Samuel Čavoj <samuel@cavoj.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Code cleanup.
* jk/unused:
dir.c: drop unused "untracked" from treat_path_fast()
sequencer: handle ignore_footer when parsing trailers
test-advise: check argument count with argc instead of argv
sparse-checkout: fill in some options boilerplate
sequencer: drop repository argument from run_git_commit()
push: drop unused repo argument to do_push()
assert PARSE_OPT_NONEG in parse-options callbacks
env--helper: write to opt->value in parseopt helper
drop unused argc parameters
convert: drop unused crlf_action from check_global_conv_flags_eol()
The append_signoff() function takes an "ignore_footer"
argument, which specifies a number of bytes at the end of
the message buffer which should not be considered (they
cannot contain trailers, and the trailer is spliced in
before them).
But to find the existing trailers, it calls into
has_conforming_trailer(). That function takes an
ignore_footer parameter, but since 967dfd4d56 (sequencer:
use trailer's trailer layout, 2016-11-02) the parameter is
completely ignored.
The trailer interface we're using takes a single string,
with no option to tell it to use part of the string.
However, since we have a mutable strbuf, we can work around
this by simply overwriting (and later restoring) the
boundary with a NUL.
I'm not sure if this can actually trigger a bug in practice.
It's easy to get a non-zero ignore_footer by doing something
like this:
git commit -F - --cleanup=verbatim <<-EOF
subject
body
Signed-off-by: me
# this looks like a comment, but is actually in the
# message! That makes the earlier s-o-b fake.
EOF
git commit --amend -s
There git-commit calls ignore_non_trailer() to count up the
"#" cruft, which becomes the ignore_footer header. But it
works even without this patch! That's because the trailer
code _also_ calls ignore_non_trailer() and skips the cruft,
too. So it happens to work because the only callers with a
non-zero ignore_footer are using the exact same function
that the trailer parser uses internally.
And that seems true for all of the current callers, but
there's nothing guaranteeing it. We're better off only
feeding the correct buffer to the trailer code in the first
place.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we switched to using an external git-commit call in b0a3186140
(sequencer: simplify root commit creation, 2019-08-19), this function
didn't need to care about the repository object any more.
Arguably we could be passing along the repository path to the external
git-commit by using "--git-dir=r->path" here. But for the most part the
sequencer code relies on sub-process finding the same repository we're
already in (using the same environment variables or discovery process we
did). But we don't have a convenient interface for doing so, and there's
no indication that we need to. Let's just drop the unused parameter for
now.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The object name written to this file is not exposed to end-users and
the only reader of this file immediately expands it back to a full
object name. Stop abbreviating while writing, and expect a full
object name while reading, which simplifies the code a bit.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rebase -i" learns a bit more options.
* pw/rebase-i-more-options:
t3436: do not run git-merge-recursive in dashed form
rebase: add --reset-author-date
rebase -i: support --ignore-date
rebase -i: support --committer-date-is-author-date
am: stop exporting GIT_COMMITTER_DATE
rebase -i: add --ignore-whitespace flag
Accesses to two pseudorefs have been updated to properly use ref
API.
* hn/refs-pseudorefs:
sequencer: treat REVERT_HEAD as a pseudo ref
builtin/commit: suggest update-ref for pseudoref removal
sequencer: treat CHERRY_PICK_HEAD as a pseudo ref
refs: make refs_ref_exists public
Check for existence and delete CHERRY_PICK_HEAD through ref functions.
This will help cherry-pick work with alternate ref storage backends.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Ring buffer with size 4 used for bin-hex translation resulted in a
wrong object name in the sequencer's todo output, which has been
corrected.
* ak/sequencer-fix-find-uniq-abbrev:
rebase -i: fix possibly wrong onto hash in todo
The commit labels used to explain each side of conflicted hunks
placed by the sequencer machinery have been made more readable by
humans.
* en/sequencer-merge-labels:
sequencer: avoid garbled merge machinery messages due to commit labels
Rebase is implemented with two different backends - 'apply' and
'merge' each of which support a different set of options. In
particular the apply backend supports a number of options implemented
by 'git am' that are not implemented in the merge backend. This means
that the available options are different depending on which backend is
used which is confusing. This patch adds support for the --ignore-date
option to the merge backend. This option uses the current time as the
author date rather than reusing the original author date when
rewriting commits. We take care to handle the combination of
--ignore-date and --committer-date-is-author-date in the same way as
the apply backend.
Original-patch-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rebase is implemented with two different backends - 'apply' and
'merge' each of which support a different set of options. In
particular the apply backend supports a number of options implemented
by 'git am' that are not implemented in the merge backend. This means
that the available options are different depending on which backend is
used which is confusing. This patch adds support for the
--committer-date-is-author-date option to the merge backend. This
option uses the author date of the commit that is being rewritten as
the committer date when the new commit is created.
Original-patch-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The implementation of --committer-date-is-author-date exports
GIT_COMMITTER_DATE to override the default committer date but does not
reset GIT_COMMITTER_DATE in the environment after creating the commit
so it is set in the environment of any hooks that get run. We're about
to add the same functionality to the sequencer and do not want to have
GIT_COMMITTER_DATE set when running hooks or exec commands so lets
update commit_tree_extended() to take an explicit committer so we
override the default date without setting GIT_COMMITTER_DATE in the
environment.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
sequencer's get_message() exists to provide good labels on conflict
hunks; see commits
d68565402a ("revert: clarify label on conflict hunks", 2010-03-20)
bf975d379d ("cherry-pick, revert: add a label for ancestor", 2010-03-20)
043a4492b3 ("sequencer: factor code out of revert builtin", 2012-01-11).
for background on this function. These labels are of the form
<commitID>... <commit summary>
or
parent of <commitID>... <commit summary>
These labels are then passed as branch names to the merge machinery.
However, these labels, as formatted, often also serve to confuse. For
example, if we have a rename involved in a content merge, then it
results in text such as the following:
<<<<<<<< HEAD:foo.c
int j;
========
int counter;
>>>>>>>> b01dface... Removed unnecessary stuff:bar.c
Or in various conflict messages, it can make it very difficult to read:
CONFLICT (rename/delete): foo.c deleted in b01dface... Removed
unnecessary stuff and renamed in HEAD. Version HEAD of foo.c left
in tree.
CONFLICT (file location): dir1/foo.c added in b01dface... Removed
unnecessary stuff inside a directory that was renamed in HEAD,
suggesting it should perhaps be moved to dir2/foo.c.
Make a minor change to remove the ellipses and add parentheses around
the commit summary; this makes all three examples much easier to read:
<<<<<<<< HEAD:foo.c
int j;
========
int counter;
>>>>>>>> b01dface (Removed unnecessary stuff):bar.c
CONFLICT (rename/delete): foo.c deleted in b01dface (Removed
unnecessary stuff) and renamed in HEAD. Version HEAD of foo.c left
in tree.
CONFLICT (file location): dir1/foo.c added in b01dface (Removed
unnecessary stuff) inside a directory that was renamed in HEAD,
suggesting it should perhaps be moved to dir2/foo.c.
Signed-off-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'todo_list_write_to_file' may overwrite the static buffer, originating
from 'find_unique_abbrev', that was used to store the short commit hash
'c' for "# Rebase a..b onto c" message in the todo editor. This is
because the buffer that is returned from 'find_unique_abbrev' is valid
until 4 more calls to `find_unique_abbrev` are made.
As 'todo_list_write_to_file' calls 'find_unique_abbrev' for each rebased
commit, the hash for 'c' is overwritten if there are 4 or more commits
in the rebase. This behavior has been broken since its introduction.
Fix by storing the short onto commit hash in a different buffer that
remains valid, before calling 'todo_list_write_to_file'.
Found-by: Jussi Keränen <jussike@gmail.com>
Signed-off-by: Antti Keränen <detegr@rbx.email>
Acked-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "argc" and "argv" names made sense when the struct was argv_array,
but now they're just confusing. Let's rename them to "nr" (which we use
for counts elsewhere) and "v" (which is rather terse, but reads well
when combined with typical variable names like "args.v").
Note that we have to update all of the callers immediately. Playing
tricks with the preprocessor is hard here, because we wouldn't want to
rewrite unrelated tokens.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Code which split an argv_array call across multiple lines, like:
argv_array_pushl(&args, "one argument",
"another argument", "and more",
NULL);
was recently mechanically renamed to use strvec, which results in
mis-matched indentation like:
strvec_pushl(&args, "one argument",
"another argument", "and more",
NULL);
Let's fix these up to align the arguments with the opening paren. I did
this manually by sifting through the results of:
git jump grep 'strvec_.*,$'
and liberally applying my editor's auto-format. Most of the changes are
of the form shown above, though I also normalized a few that had
originally used a single-tab indentation (rather than our usual style of
aligning with the open paren). I also rewrapped a couple of obvious
cases (e.g., where previously too-long lines became short enough to fit
on one), but I wasn't aggressive about it. In cases broken to three or
more lines, the grouping of arguments is sometimes meaningful, and it
wasn't worth my time or reviewer time to ponder each case individually.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We eventually want to drop the argv_array name and just use strvec
consistently. There's no particular reason we have to do it all at once,
or care about interactions between converted and unconverted bits.
Because of our preprocessor compat layer, the names are interchangeable
to the compiler (so even a definition and declaration using different
names is OK).
This patch converts all of the remaining files, as the resulting diff is
reasonably sized.
The conversion was done purely mechanically with:
git ls-files '*.c' '*.h' |
xargs perl -i -pe '
s/ARGV_ARRAY/STRVEC/g;
s/argv_array/strvec/g;
'
We'll deal with any indentation/style fallouts separately.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This requires updating #include lines across the code-base, but that's
all fairly mechanical, and was done with:
git ls-files '*.c' '*.h' |
xargs perl -i -pe 's/argv-array.h/strvec.h/'
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"rebase -i" segfaulted when rearranging a sequence that has a
fix-up that applies another fix-up (which may or may not be a
fix-up of yet another step).
* js/rebase-autosquash-double-fixup-fix:
rebase --autosquash: fix a potential segfault
When rearranging the todo list so that the fixups/squashes are reordered
just after the commits they intend to fix up, we use two arrays to
maintain that list: `next` and `tail`.
The idea is that `next[i]`, if set to a non-negative value, contains the
index of the item that should be rearranged just after the `i`th item.
To avoid having to walk the entire `next` chain when appending another
fixup/squash, we also store the end of the `next` chain in `tail[i]`.
The logic we currently use to update these array items is based on the
assumption that given a fixup/squash item at index `i`, we just found
the index `i2` indicating the first item in that fixup chain.
However, as reported by Paul Ganssle, that need not be true: the special
form `fixup! <commit-hash>` is allowed to point to _another_ fixup
commit in the middle of the fixup chain.
Example:
* 0192a To fixup
* 02f12 fixup! To fixup
* 03763 fixup! To fixup
* 04ecb fixup! 02f12
Note how the fourth commit targets the second commit, which is already a
fixup that targets the first commit.
Previously, we would update `next` and `tail` under our assumption that
every `fixup!` commit would find the start of the `fixup!`/`squash!`
chain. This would lead to a segmentation fault because we would actually
end up with a `next[i]` pointing to a `fixup!` but the corresponding
`tail[i]` pointing nowhere, which would the lead to a segmentation
fault.
Let's fix this by _inserting_, rather than _appending_, the item. In
other words, if we make a given line successor of another line, we do
not simply forget any previously set successor of the latter, but make
it a successor of the former.
In the above example, at the point when we insert 04ecb just after
02f12, 03763 would already be recorded as a successor of 04ecb, and we
now "squeeze in" 04ecb.
To complete the idea, we now no longer assume that `next[i]` pointing to
a line means that `last[i]` points to a line, too. Instead, we extend
the concept of `last` to cover also partial `fixup!`/`squash!` chains,
i.e. chains starting in the middle of a larger such chain.
In the above example, after processing all lines, `last[0]`
(corresponding to 0192a) would point to 03763, which indeed is the end
of the overall `fixup!` chain, and `last[1]` (corresponding to 02f12)
would point to 04ecb (which is the last `fixup!` targeting 02f12, but it
has 03763 as successor, i.e. it is not the end of overall `fixup!`
chain).
Reported-by: Paul Ganssle <paul@ganssle.io>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow "git rebase" to reapply all local commits, even if the may be
already in the upstream, without checking first.
* jt/rebase-allow-duplicate:
rebase --merge: optionally skip upstreamed commits
"git rebase" (again) learns to honor "--no-keep-empty", which lets
the user to discard commits that are empty from the beginning (as
opposed to the ones that become empty because of rebasing). The
interactive rebase also marks commits that are empty in the todo.
* en/rebase-no-keep-empty:
rebase: fix an incompatible-options error message
rebase: reinstate --no-keep-empty
rebase -i: mark commits that begin empty in todo editor
"git rebase" learned the "--no-gpg-sign" option to countermand
commit.gpgSign the user may have.
* dd/no-gpg-sign:
Documentation: document merge option --no-gpg-sign
Documentation: merge commit-tree --[no-]gpg-sign
Documentation: reword commit --no-gpg-sign
Documentation: document am --no-gpg-sign
cherry-pick/revert: honour --no-gpg-sign in all case
rebase.c: honour --no-gpg-sign
"git rebase" with the merge backend did not work well when the
rebase.abbreviateCommands configuration was set.
* ag/rebase-merge-allow-ff-under-abbrev-command:
t3432: test `--merge' with `rebase.abbreviateCommands = true', too
sequencer: don't abbreviate a command if it doesn't have a short form
