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2021-09-20Merge branch 'ds/mergies-with-sparse-index'Libravatar Junio C Hamano1-0/+9
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
2021-09-10Merge branch 'ab/retire-advice-config'Libravatar Junio C Hamano1-4/+4
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
2021-09-10Merge branch 'zh/cherry-pick-advice'Libravatar Junio C Hamano1-4/+16
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
2021-09-10Merge branch 'js/advise-when-skipping-cherry-picked'Libravatar Junio C Hamano1-2/+20
"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
2021-09-09sequencer: ensure full index if not ORT strategyLibravatar Derrick Stolee1-0/+9
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>
2021-09-03Merge branch 'pw/rebase-r-fixes'Libravatar Junio C Hamano1-49/+57
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
2021-09-03Merge branch 'pw/rebase-skip-final-fix'Libravatar Junio C Hamano1-0/+3
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
2021-08-30sequencer: advise if skipping cherry-picked commitLibravatar Josh Steadmon1-2/+20
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>
2021-08-30Merge branch 'en/ort-becomes-the-default'Libravatar Junio C Hamano1-2/+2
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
2021-08-30Merge branch 'en/merge-strategy-docs'Libravatar Junio C Hamano1-1/+1
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
2021-08-25advice: remove read uses of most global `advice_` variablesLibravatar Ben Boeckel1-4/+4
In c4a09cc9ccb (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>
2021-08-24Merge branch 'js/expand-runtime-prefix'Libravatar Junio C Hamano1-1/+1
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
2021-08-23cherry-pick: use better advice messageLibravatar ZheNing Hu1-4/+16
"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>
2021-08-23rebase -r: fix merge -c with a merge strategyLibravatar Phillip Wood1-1/+4
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>
2021-08-23rebase -r: don't write .git/MERGE_MSG when fast-forwardingLibravatar Phillip Wood1-40/+41
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>
2021-08-20rebase -r: make 'merge -c' behave like rewordLibravatar Phillip Wood1-10/+14
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>
2021-08-13rebase --continue: remove .git/MERGE_MSGLibravatar Phillip Wood1-0/+3
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>
2021-08-05Change default merge backend from recursive to ortLibravatar Elijah Newren1-2/+2
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>
2021-08-05Update error message and code commentLibravatar Elijah Newren1-1/+1
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>
2021-07-26Use a better name for the function interpolating pathsLibravatar Johannes Schindelin1-1/+1
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>
2021-07-13*.c static functions: add missing __attribute__((format))Libravatar Ævar Arnfjörð Bjarmason1-0/+2
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>
2021-07-12sequencer.c: move static function to avoid forward declLibravatar Ævar Arnfjörð Bjarmason1-22/+19
Move the reflog_message() function added in 96e832a5fd6 (sequencer (rebase -i): refactor setting the reflog message, 2017-01-02), it gained another user in 9055e401dd6 (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>
2021-05-10Merge branch 'bc/hash-transition-interop-part-1'Libravatar Junio C Hamano1-2/+2
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
2021-05-07Merge branch 'ab/rebase-no-reschedule-failed-exec'Libravatar Junio C Hamano1-0/+5
"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
2021-04-27hash: provide per-algorithm null OIDsLibravatar brian m. carlson1-2/+2
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>
2021-04-16Merge branch 'en/ort-readiness'Libravatar Junio C Hamano1-0/+5
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
2021-04-10rebase: don't override --no-reschedule-failed-exec with configLibravatar Ævar Arnfjörð Bjarmason1-0/+5
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 d421afa0c66 (rebase: introduce --reschedule-failed-exec, 2018-12-10) and the addition of the config variable in 969de3ff0e0 (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>
2021-04-08Merge branch 'en/sequencer-edit-upon-conflict-fix'Libravatar Junio C Hamano1-11/+41
"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
2021-03-31sequencer: fix edit handling for cherry-pick and revert messagesLibravatar Elijah Newren1-11/+41
save_opts() should save any non-default values. It was intended to do this, but since most options in struct replay_opts default to 0, it only saved non-zero values. Unfortunately, this does not always work for options.edit. Roughly speaking, options.edit had a default value of 0 for cherry-pick but a default value of 1 for revert. Make save_opts() record a value whenever it differs from the default. options.edit was also overly simplistic; we had more than two cases. The behavior that previously existed was as follows: Non-conflict commits Right after Conflict revert Edit iff isatty(0) Edit (ignore isatty(0)) cherry-pick No edit See above Specify --edit Edit (ignore isatty(0)) See above Specify --no-edit (*) See above (*) Before stopping for conflicts, No edit is the behavior. After stopping for conflicts, the --no-edit flag is not saved so see the first two rows. However, the expected behavior is: Non-conflict commits Right after Conflict revert Edit iff isatty(0) Edit iff isatty(0) cherry-pick No edit Edit iff isatty(0) Specify --edit Edit (ignore isatty(0)) Edit (ignore isatty(0)) Specify --no-edit No edit No edit In order to get the expected behavior, we need to change options.edit to a tri-state: unspecified, false, or true. When specified, we follow what it says. When unspecified, we need to check whether the current commit being created is resolving a conflict as well as consulting options.action and isatty(0). While at it, add a should_edit() utility function that compresses options.edit down to a boolean based on the additional information for the non-conflict case. continue_single_pick() is the function responsible for resuming after conflict cases, regardless of whether there is one commit being picked or many. Make this function stop assuming edit behavior in all cases, so that it can correctly handle !isatty(0) and specific requests to not edit the commit message. Reported-by: Renato Botelho <garga@freebsd.org> Signed-off-by: Elijah Newren <newren@gmail.com> Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-26Merge branch 'cm/rebase-i-fixup-amend-reword'Libravatar Junio C Hamano1-15/+1
"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()
2021-03-26Merge branch 'cm/rebase-i-updates'Libravatar Junio C Hamano1-12/+11
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
2021-03-26Merge branch 'cm/rebase-i'Libravatar Junio C Hamano1-39/+256
"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
2021-03-20merge-ort: write $GIT_DIR/AUTO_MERGE whenever we hit a conflictLibravatar Elijah Newren1-0/+5
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>
2021-03-15sequencer: export and rename subject_length()Libravatar Charvi Mendiratta1-15/+1
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>
2021-03-13use CALLOC_ARRAYLibravatar René Scharfe1-1/+1
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>
2021-02-10Merge branch 'ds/more-index-cleanups'Libravatar Junio C Hamano1-3/+0
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()
2021-02-08sequencer: rename a few functionsLibravatar Charvi Mendiratta1-9/+9
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>
2021-02-08sequencer: fixup the datatype of the 'flag' argumentLibravatar Charvi Mendiratta1-4/+3
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>
2021-01-29rebase -i: teach --autosquash to work with amend!Libravatar Charvi Mendiratta1-7/+16
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>
2021-01-29rebase -i: add fixup [-C | -c] commandLibravatar Charvi Mendiratta1-19/+194
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>
2021-01-29sequencer: use const variable for commit message commentsLibravatar Charvi Mendiratta1-5/+10
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>
2021-01-29sequencer: pass todo_item to do_pick_commit()Libravatar Charvi Mendiratta1-7/+11
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>
2021-01-29rebase -i: comment out squash!/fixup! subjects from squash messageLibravatar Phillip Wood1-1/+20
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>
2021-01-28rebase -i: do leave commit message intact in fixup! chainsLibravatar Johannes Schindelin1-1/+12
In 6e98de72c03 (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>
2021-01-23cache-tree: clean up cache_tree_update()Libravatar Derrick Stolee1-3/+0
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>
2021-01-20sequencer: factor out code to append squash messageLibravatar Phillip Wood1-6/+12
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>
2021-01-20rebase -i: only write fixup-message when it's neededLibravatar Phillip Wood1-4/+3
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>
2020-11-21Merge branch 'en/strmap'Libravatar Junio C Hamano1-2/+2
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]()
2020-11-18Merge branch 'en/merge-ort-api-null-impl'Libravatar Junio C Hamano1-11/+61
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
2020-11-18Merge branch 'pw/rebase-i-orig-head'Libravatar Junio C Hamano1-9/+6
"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