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2023-02-06rebase: use "cleanup" pattern in do_interactive_rebase()Ævar Arnfjörð Bjarmason1-8/+5
Use a "goto cleanup" pattern in do_interactive_rebase(). This eliminates some duplicated free() code added in 53bbcfbde7c (rebase -i: implement the main part of interactive rebase as a builtin, 2018-09-27), and sets us up for a subsequent commit which'll make further use of the "cleanup" label. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-25rebase: provide better error message for apply options vs. merge configElijah Newren1-6/+21
When config which selects the merge backend (currently, rebase.autosquash=true or rebase.updateRefs=true) conflicts with other options on the command line (such as --whitespace=fix), make the error message specifically call out the config option and specify how to override that config option on the command line. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-25rebase: put rebase_options initialization in single placeElijah Newren1-2/+2
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-25rebase: add coverage of other incompatible optionsElijah Newren1-0/+3
The git-rebase manual noted several sets of incompatible options, but we were missing tests for a few of these. Further, we were missing code checks for one of these, which could result in command line options being silently ignored. Also, note that adding a check for autosquash means that using --whitespace=fix together with the config setting rebase.autosquash=true will trigger an error. A subsequent commit will improve the error message. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-25rebase: fix incompatiblity checks for --[no-]reapply-cherry-picksElijah Newren1-13/+21
--[no-]reapply-cherry-picks was traditionally only supported by the sequencer. Support was added for the apply backend, when --keep-base is also specified, in commit ce5238a690 ("rebase --keep-base: imply --reapply-cherry-picks", 2022-10-17). Make the code error out when --[no-]reapply-cherry-picks is specified AND the apply backend is used AND --keep-base is not specified. Also, clarify a number of comments surrounding the interaction of these flags. Helped-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-25rebase: flag --apply and --merge as incompatibleElijah Newren1-2/+10
Previously, we flagged options which implied --apply as being incompatible with options which implied --merge. But if both options were given explicitly, then we didn't flag the incompatibility. The same is true with --apply and --interactive. Add the check, and add some testcases to verify these are also caught. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-25rebase: mark --update-refs as requiring the merge backendElijah Newren1-0/+3
--update-refs is built in terms of the sequencer, which requires the merge backend. It was already marked as incompatible with the apply backend in the git-rebase manual, but the code didn't check for this incompatibility and warn the user. Check and error now. While at it, fix a typo in t3422...and fix some misleading wording (most options which used to be am-specific have since been implemented in the merge backend as well). Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-01-13rebase: cleanup "--exec" option handlingPhillip Wood1-34/+11
When handling "--exec" rebase collects the commands into a struct string_list, then prepends "exec " to each command creating a multi line string and finally splits that string back into a list of commands. This is an artifact of the scripted rebase and the need to support "rebase --preserve-merges". Now that "--preserve-merges" no-longer exists we can cleanup the way the argument is handled. There is no need to add the "exec " prefix to the commands as that is added by todo_list_to_strbuf(). Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-14Merge branch 'ab/various-leak-fixes'Junio C Hamano1-0/+4
Various leak fixes. * ab/various-leak-fixes: built-ins: use free() not UNLEAK() if trivial, rm dead code revert: fix parse_options_concat() leak cherry-pick: free "struct replay_opts" members rebase: don't leak on "--abort" connected.c: free the "struct packed_git" sequencer.c: fix "opts->strategy" leak in read_strategy_opts() ls-files: fix a --with-tree memory leak revision API: call graph_clear() in release_revisions() unpack-file: fix ancient leak in create_temp_file() built-ins & libs & helpers: add/move destructors, fix leaks dir.c: free "ident" and "exclude_per_dir" in "struct untracked_cache" read-cache.c: clear and free "sparse_checkout_patterns" commit: discard partial cache before (re-)reading it {reset,merge}: call discard_index() before returning tests: mark tests as passing with SANITIZE=leak
2022-11-28Merge branch 'ab/fewer-the-index-macros'Junio C Hamano1-3/+3
Progress on removing 'the_index' convenience wrappers. * ab/fewer-the-index-macros: cocci: apply "pending" index-compatibility to some "builtin/*.c" cache.h & test-tool.h: add & use "USE_THE_INDEX_VARIABLE" {builtin/*,repository}.c: add & use "USE_THE_INDEX_VARIABLE" cocci: apply "pending" index-compatibility to "t/helper/*.c" cocci & cache.h: apply variable section of "pending" index-compatibility cocci & cache.h: apply a selection of "pending" index-compatibility cocci: add a index-compatibility.pending.cocci read-cache API & users: make discard_index() return void cocci & cache.h: remove rarely used "the_index" compat macros builtin/{grep,log}.: don't define "USE_THE_INDEX_COMPATIBILITY_MACROS" cache.h: remove unused "the_index" compat macros
2022-11-21rebase: don't leak on "--abort"Ævar Arnfjörð Bjarmason1-0/+1
Fix a leak in the recent 6159e7add49 (rebase --abort: improve reflog message, 2022-10-12). Before that commit we'd strbuf_release() the reflog message we were formatting, but when that code was refactored to use "ropts.head_msg" the strbuf_release() was omitted. Ideally the three users of "ropts" in cmd_rebase() should use different "ropts" variables, in practice they're completely separate, as this and the other user in the "switch" statement will "goto cleanup", which won't touch "ropts". The third caller after the "switch" is then unreachable if we take these two branches, so all of them are getting a "{ 0 }" init'd "ropts". So it's OK that we're leaving a stale pointer in "ropts.head_msg", cleaning it up was our responsibility, and it won't be used again. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-21built-ins & libs & helpers: add/move destructors, fix leaksÆvar Arnfjörð Bjarmason1-0/+3
Fix various leaks in built-ins, libraries and a test helper here we were missing a call to strbuf_release(), string_list_clear() etc, or were calling them after a potential "return". Comments on individual changes: - builtin/checkout.c: Fix a memory leak that was introduced in [1]. A sibling leak introduced in [2] was recently fixed in [3]. As with [3] we should be using the wt_status_state_free_buffers() API introduced in [4]. - builtin/repack.c: Fix a leak that's been here since this use of "strbuf_release()" was added in a1bbc6c0176 (repack: rewrite the shell script in C, 2013-09-15). We don't use the variable for anything except this loop, so we can instead free it right afterwards. - builtin/rev-parse: Fix a leak that's been here since this code was added in 21d47835386 (Add a parseopt mode to git-rev-parse to bring parse-options to shell scripts., 2007-11-04). - builtin/stash.c: Fix a couple of leaks that have been here since this code was added in d4788af875c (stash: convert create to builtin, 2019-02-25), we strbuf_release()'d only some of the "struct strbuf" we allocated earlier in the function, let's release all of them. - ref-filter.c: Fix a leak in 482c1191869 (gpg-interface: improve interface for parsing tags, 2021-02-11), we don't use the "payload" variable that we ask parse_signature() to populate for us, so let's free it. - t/helper/test-fake-ssh.c: Fix a leak that's been here since this code was added in 3064d5a38c7 (mingw: fix t5601-clone.sh, 2016-01-27). Let's free the "struct strbuf" as soon as we don't need it anymore. 1. c45f0f525de (switch: reject if some operation is in progress, 2019-03-29) 2. 2708ce62d21 (branch: sort detached HEAD based on a flag, 2021-01-07) 3. abcac2e19fa (ref-filter.c: fix a leak in get_head_description, 2022-09-25) 4. 962dd7ebc3e (wt-status: introduce wt_status_state_free_buffers(), 2020-09-27). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-21cocci: apply "pending" index-compatibility to some "builtin/*.c"Ævar Arnfjörð Bjarmason1-3/+3
Apply "index-compatibility.pending.cocci" rule to "builtin/*", but exclude those where we conflict with in-flight changes. As a result some of them end up using only "the_index", so let's have them use the more narrow "USE_THE_INDEX_VARIABLE" rather than "USE_THE_INDEX_COMPATIBILITY_MACROS". Manual changes not made by coccinelle, that were squashed in: * Whitespace-wrap argument lists for repo_hold_locked_index(), repo_read_index_preload() and repo_refresh_and_write_index(), in cases where the line became too long after the transformation. * Change "refresh_cache()" to "refresh_index()" in a comment in "builtin/update-index.c". * For those whose call was followed by perror("<macro-name>"), change it to perror("<function-name>"), referring to the new function. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-11-09rebase: stop exporting GIT_REFLOG_ACTIONPhillip Wood1-12/+15
Now that struct replay_opts has a reflog_action member we no longer need to export GIT_REFLOG_ACTION when starting a rebase. If the user has set GIT_REFLOG_ACTION then we use it when initializing reflog_action. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Reviewed-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-10-30Merge branch 'pw/rebase-reflog-fixes'Taylor Blau1-87/+59
Fix some bugs in the reflog messages when rebasing and changes the reflog messages of "rebase --apply" to match "rebase --merge" with the aim of making the reflog easier to parse. * pw/rebase-reflog-fixes: rebase: cleanup action handling rebase --abort: improve reflog message rebase --apply: make reflog messages match rebase --merge rebase --apply: respect GIT_REFLOG_ACTION rebase --merge: fix reflog message after skipping rebase --merge: fix reflog when continuing t3406: rework rebase reflog tests rebase --apply: remove duplicated code
2022-10-30Merge branch 'pw/rebase-keep-base-fixes'Taylor Blau1-61/+83
"git rebase --keep-base" used to discard the commits that are already cherry-picked to the upstream, even when "keep-base" meant that the base, on top of which the history is being rebuilt, does not yet include these cherry-picked commits. The --keep-base option now implies --reapply-cherry-picks and --no-fork-point options. * pw/rebase-keep-base-fixes: rebase --keep-base: imply --no-fork-point rebase --keep-base: imply --reapply-cherry-picks rebase: factor out branch_base calculation rebase: rename merge_base to branch_base rebase: store orig_head as a commit rebase: be stricter when reading state files containing oids t3416: set $EDITOR in subshell t3416: tighten two tests
2022-10-17rebase: cleanup action handlingPhillip Wood1-49/+44
Treating the action as a string is a hang over from the scripted rebase. The last commit removed the only remaining use of the action that required a string so lets convert the other action users to use the existing action enum instead. If we ever need the action name as a string in the future the action_names array exists exactly for that purpose. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase --abort: improve reflog messagePhillip Wood1-20/+8
When aborting a rebase the reflog message looks like rebase (abort): updating HEAD which is not very informative. Improve the message by mentioning the branch that we are returning to as we do at the end of a successful rebase so it looks like. rebase (abort): returning to refs/heads/topic If GIT_REFLOG_ACTION is set in the environment we no longer omit "(abort)" from the reflog message. We don't omit "(start)" and "(finish)" when starting and finishing a rebase in that case so we shouldn't omit "(abort)". Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase --apply: make reflog messages match rebase --mergePhillip Wood1-4/+5
The apply backend creates slightly different reflog messages to the merge backend when starting or finishing a rebase and when picking commits. These differences make it harder than it needs to be to parse the reflog (I have a script that reads the finishing messages from rebase and it is a pain to have to accommodate two different message formats). While it is possible to determine the backend used for a rebase from the reflog messages, the differences are not designed for that purpose. c2417d3af7 (rebase: drop '-i' from the reflog for interactive-based rebases, 2020-02-15) removed the clear distinction between the reflog messages of the two backends without complaint. As the merge backend is the default it is likely to be the format most common in existing reflogs. For that reason the apply backend is changed to format its reflog messages to match the merge backend as closely as possible. Note that there is still a difference as when committing a conflict resolution the apply backend will use "(pick)" rather than "(continue)" because it is not currently possible to change the message for a single commit. In addition to c2417d3af7 we also changed the reflog messages in 68aa495b59 (rebase: implement --merge via the interactive machinery, 2018-12-11) and 2ac0d6273f (rebase: change the default backend from "am" to "merge", 2020-02-15). This commit makes the same change to "git rebase --apply" that 2ac0d6273f made to "git rebase" without any backend specific options. As the messages are changed to use an existing format any scripts that can parse the reflog messages of the default rebase backend should be unaffected by this change. There are existing tests for the messages from both backends which are adjusted to ensure that they do not get out of sync in the future. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase --apply: respect GIT_REFLOG_ACTIONPhillip Wood1-3/+4
The reflog messages when finishing a rebase hard code "rebase" rather than using GIT_REFLOG_ACTION. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase --merge: fix reflog message after skippingPhillip Wood1-2/+0
The reflog message for every pick after running "rebase --skip" looks like rebase (skip) (pick): commit subject line Fix this by not appending " (skip)" to the reflog action. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase --merge: fix reflog when continuingPhillip Wood1-2/+0
The reflog message for a conflict resolution committed by "rebase --continue" looks like rebase (continue): commit subject line Unfortunately the reflog message each subsequent pick look like rebase (continue) (pick): commit subject line Fix this by setting the reflog message for "rebase --continue" in sequencer_continue() so it does not affect subsequent commits. This introduces a memory leak similar to the one leaking GIT_REFLOG_ACTION in pick_commits(). Both of these will be fixed in a future series that stops the sequencer calling setenv(). If we fail to commit the staged changes then we error out so GIT_REFLOG_ACTION does not need to be reset in that case. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase --apply: remove duplicated codePhillip Wood1-10/+1
Use move_to_original_branch() when reattaching HEAD after a fast-forward rather than open coding a copy of that code. move_to_original_branch() does not call reset_head() if head_name is NULL but there should be no user visible changes even though we currently call reset_head() in that case. The reason for this is that the reset_head() call does not add a message to the reflog because we're not changing the commit that HEAD points to and so lock_ref_for_update() elides the update. When head_name is not NULL then reset_head() behaves like "git symbolic-ref" and so the reflog is updated. Note that the removal of "strbuf_release(&msg)" is safe as there is an identical call just above this hunk which can be seen by viewing the diff with -U6. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase --keep-base: imply --no-fork-pointPhillip Wood1-0/+6
Given the name of the option it is confusing if --keep-base actually changes the base of the branch without --fork-point being explicitly given on the command line. The combination of --keep-base with an explicit --fork-point is still supported even though --fork-point means we do not keep the same base if the upstream branch has been rewound. We do this in case anyone is relying on this behavior which is tested in t3431[1] [1] https://lore.kernel.org/git/20200715032014.GA10818@generichostname/ Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase --keep-base: imply --reapply-cherry-picksPhillip Wood1-1/+15
As --keep-base does not rebase the branch it is confusing if it removes commits that have been cherry-picked to the upstream branch. As --reapply-cherry-picks is not supported by the "apply" backend this commit ensures that cherry-picks are reapplied by forcing the upstream commit to match the onto commit unless --no-reapply-cherry-picks is given. Reported-by: Philippe Blain <levraiphilippeblain@gmail.com> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase: factor out branch_base calculationPhillip Wood1-13/+20
Separate out calculating the merge base between 'onto' and 'HEAD' from the check for whether we can fast-forward or not. This means we can skip the fast-forward checks when the rebase is forced and avoid calculating the merge-base between 'HEAD' and 'onto' when --keep-base is given. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase: rename merge_base to branch_basePhillip Wood1-15/+15
merge_base is not a very descriptive name, the variable always holds the merge-base of 'branch' and 'onto' which is commit at the base of the branch being rebased so rename it to branch_base. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase: store orig_head as a commitPhillip Wood1-35/+31
Using a struct commit rather than a struct oid to hold orig_head means that we error out straight away if the branch being rebased does not point to a commit. It also simplifies the code that handles finding the merge base and fork point as it no longer has to convert from an oid to a commit. To avoid changing the behavior of "git rebase <upstream> <branch>" we keep the existing call to read_ref() and use lookup_commit_object() on the oid returned by that rather than calling lookup_commit_reference_by_name() which applies the ref dwim rules to its argument. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-10-17rebase: be stricter when reading state files containing oidsPhillip Wood1-4/+4
The state files for 'onto' and 'orig_head' should contain a full hex oid, change the reading functions from get_oid() to get_oid_hex() to reflect this. They should also name commits and not tags so add and use a function that looks up a commit from an oid like lookup_commit_reference() but without dereferencing tags. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-07-19rebase: add rebase.updateRefs config optionDerrick Stolee1-0/+5
The previous change added the --update-refs command-line option. For users who always want this mode, create the rebase.updateRefs config option which behaves the same way as rebase.autoSquash does with the --autosquash option. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-07-19rebase: add --update-refs optionDerrick Stolee1-0/+5
When working on a large feature, it can be helpful to break that feature into multiple smaller parts that become reviewed in sequence. During development or during review, a change to one part of the feature could affect multiple of these parts. An interactive rebase can help adjust the multi-part "story" of the branch. However, if there are branches tracking the different parts of the feature, then rebasing the entire list of commits can create commits not reachable from those "sub branches". It can take a manual step to update those branches. Add a new --update-refs option to 'git rebase -i' that adds 'update-ref <ref>' steps to the todo file whenever a commit that is being rebased is decorated with that <ref>. At the very end, the rebase process updates all of the listed refs to the values stored during the rebase operation. Be sure to iterate after any squashing or fixups are placed. Update the branch only after those squashes and fixups are complete. This allows a --fixup commit at the tip of the feature to apply correctly to the sub branch, even if it is fixing up the most-recent commit in that part. This change update the documentation and builtin to accept the --update-refs option as well as updating the todo file with the 'update-ref' commands. Tests are added to ensure that these todo commands are added in the correct locations. This change does _not_ include the actual behavior of tracking the updated refs and writing the new ref values at the end of the rebase process. That is deferred to a later change. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-06-16builtin/rebase: remove a redundant space in l10n stringFangyi Zhou1-1/+1
Found in l10n. Signed-off-by: Fangyi Zhou <me@fangyi.io> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-06-15Merge branch 'po/rebase-preserve-merges'Junio C Hamano1-5/+9
Various error messages that talk about the removal of "--preserve-merges" in "rebase" have been strengthened, and "rebase --abort" learned to get out of a state that was left by an earlier use of the option. * po/rebase-preserve-merges: rebase: translate a die(preserve-merges) message rebase: note `preserve` merges may be a pull config option rebase: help users when dying with `preserve-merges` rebase.c: state preserve-merges has been removed
2022-06-06rebase: translate a die(preserve-merges) messagePhilip Oakley1-2/+2
This is a user facing message for a situation seen in the wild. Translate it. Signed-off-by: Philip Oakley <philipoakley@iee.email> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-06-06rebase: note `preserve` merges may be a pull config optionPhilip Oakley1-1/+3
The `--preserve-merges` option was removed by v2.34.0. However users may not be aware that it is also a Pull configuration option, which is still offered by major IDE vendors such as Visual Studio. Extend the `--preserve-merges` die message to also direct users to the possible use of the `preserve` option in the `pull.rebase` config. This is an additional 'belt and braces' information statement. Signed-off-by: Philip Oakley <philipoakley@iee.email> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-06-06rebase: help users when dying with `preserve-merges`Philip Oakley1-2/+4
Git would die if a "rebase --preserve-merges" was in progress. Users could neither --quit, --abort, nor --continue the rebase. Make the `rebase --abort` option available to allow users to remove traces of any preserve-merges rebase, even if they had upgraded during a rebase. One trigger case was an unexpectedly difficult to resolve conflict, as reported on the `git-users` group. (https://groups.google.com/g/git-for-windows/c/3jMWbBlXXHM) Other potential use-cases include git-experts using the portable 'Git on a stick' to help users with an older git version. Signed-off-by: Philip Oakley <philipoakley@iee.email> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-06-06rebase.c: state preserve-merges has been removedPhilip Oakley1-2/+2
Since feebd2d256 (rebase: hide --preserve-merges option, 2019-10-18) this option is now removed as stated in the subsequent release notes. Fix and reflow the option tip. Signed-off-by: Philip Oakley <philipoakley@iee.email> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-05-11Merge branch 'ea/rebase-code-simplify'Junio C Hamano1-4/+2
Code clean-up. * ea/rebase-code-simplify: rebase: simplify an assignment of options.type in cmd_rebase
2022-04-21rebase: use correct base for --keep-base when a branch is givenAlex Henrie1-27/+28
--keep-base rebases onto the merge base of the given upstream and the current HEAD regardless of whether a branch is given. This is contrary to the documentation and to the option's intended purpose. Instead, rebase onto the merge base of the given upstream and the given branch. Signed-off-by: Alex Henrie <alexhenrie24@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-20rebase: simplify an assignment of options.type in cmd_rebaseEdmundo Carmona Antoranz1-4/+2
There is an if statement where both if and else have the same assignment of options.type to REBASE_MERGE. Simplify it by getting that assigmnent out of the if. Signed-off-by: Edmundo Carmona Antoranz <eantoranz@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-18rebase: set REF_HEAD_DETACH in checkout_up_to_date()John Cai1-0/+2
"git rebase A B" where B is not a commit should behave as if the HEAD got detached at B and then the detached HEAD got rebased on top of A. A bug however overwrites the current branch to point at B, when B is a descendant of A (i.e. the rebase ends up being a fast-forward). See [1] for the original bug report. The callstack from checkout_up_to_date() is the following: cmd_rebase() -> checkout_up_to_date() -> reset_head() -> update_refs() -> update_ref() When B is not a valid branch but an oid, rebase sets the head_name of rebase_options to NULL. This value gets passed down this call chain through the branch member of reset_head_opts also getting set to NULL all the way to update_refs(). Then update_refs() checks ropts.branch to decide whether or not to switch branches. If ropts.branch is NULL, it calls update_ref() to update HEAD. At this point however, from rebase's point of view, we want a detached HEAD. But, since checkout_up_to_date() does not set the RESET_HEAD_DETACH flag, the update_ref() call will deference HEAD and update the branch its pointing to. We want the HEAD detached at B instead. Fix this bug by adding the RESET_HEAD_DETACH flag in checkout_up_to_date if B is not a valid branch, so that once reset_head() calls update_refs(), it calls update_ref() with REF_NO_DEREF which updates HEAD directly intead of deferencing it and updating the branch that HEAD points to. Also add a test to ensure the correct behavior. [1] https://lore.kernel.org/git/YiokTm3GxIZQQUow@newk/ Reported-by: Michael McClimon <michael@mcclimon.org> Signed-off-by: John Cai <johncai86@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-25Merge branch 'ja/i18n-common-messages'Junio C Hamano1-1/+1
Unify more messages to help l10n. * ja/i18n-common-messages: i18n: fix some misformated placeholders in command synopsis i18n: remove from i18n strings that do not hold translatable parts i18n: factorize "invalid value" messages i18n: factorize more 'incompatible options' messages
2022-02-18Merge branch 'pw/use-in-process-checkout-in-rebase'Junio C Hamano1-41/+60
Use an internal call to reset_head() helper function instead of spawning "git checkout" in "rebase", and update code paths that are involved in the change. * pw/use-in-process-checkout-in-rebase: rebase -m: don't fork git checkout rebase --apply: set ORIG_HEAD correctly rebase --apply: fix reflog reset_head(): take struct rebase_head_opts rebase: cleanup reset_head() calls create_autostash(): remove unneeded parameter reset_head(): make default_reflog_action optional reset_head(): factor out ref updates reset_head(): remove action parameter rebase --apply: don't run post-checkout hook if there is an error rebase: do not remove untracked files on checkout rebase: pass correct arguments to post-checkout hook t5403: refactor rebase post-checkout hook tests rebase: factor out checkout for up to date branch
2022-02-09Merge branch 'ab/config-based-hooks-2'Junio C Hamano1-1/+2
More "config-based hooks". * ab/config-based-hooks-2: run-command: remove old run_hook_{le,ve}() hook API receive-pack: convert push-to-checkout hook to hook.h read-cache: convert post-index-change to use hook.h commit: convert {pre-commit,prepare-commit-msg} hook to hook.h git-p4: use 'git hook' to run hooks send-email: use 'git hook run' for 'sendemail-validate' git hook run: add an --ignore-missing flag hooks: convert worktree 'post-checkout' hook to hook library hooks: convert non-worktree 'post-checkout' hook to hook library merge: convert post-merge to use hook.h am: convert applypatch-msg to use hook.h rebase: convert pre-rebase to use hook.h hook API: add a run_hooks_l() wrapper am: convert {pre,post}-applypatch to use hook.h gc: use hook library for pre-auto-gc hook hook API: add a run_hooks() wrapper hook: add 'run' subcommand
2022-02-04i18n: remove from i18n strings that do not hold translatable partsJean-Noël Avila1-1/+1
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-26rebase --apply: set ORIG_HEAD correctlyPhillip Wood1-0/+1
At the start of a rebase, ORIG_HEAD is updated to the tip of the branch being rebased. Unfortunately reset_head() always uses the current value of HEAD for this which is incorrect if the rebase is started with "git rebase <upstream> <branch>" as in that case ORIG_HEAD should be updated to <branch>. This only affects the "apply" backend as the "merge" backend does not yet use reset_head() for the initial checkout. Fix this by passing in orig_head when calling reset_head() and add some regression tests. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-26rebase --apply: fix reflogPhillip Wood1-4/+4
move_to_original_branch() passes the message intended for the branch reflog as `orig_head_msg`. Fix this by adding a `branch_msg` member to struct reset_head_opts and add a regression test. Note that these reflog messages do not respect GIT_REFLOG_ACTION. They are not alone in that and will be fixed in a future series. The "merge" backend already has tests that check both the branch and HEAD reflogs. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-26reset_head(): take struct rebase_head_optsPhillip Wood1-21/+36
This function takes a confusingly large number of parameters which makes it difficult to remember which order to pass them in. The following commits will add a couple more parameters which makes the problem worse. To address this change the function to take a struct of options. Using a struct means that it is no longer necessary to remember which order to pass the parameters in and anyone reading the code can easily see which value is passed to each parameter. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-26rebase: cleanup reset_head() callsPhillip Wood1-2/+2
If ORIG_HEAD is not set by passing RESET_ORIG_HEAD then there is no need to pass anything for reflog_orig_head. In addition to the callers fixed in this commit move_to_original_branch() also passes reflog_orig_head without setting ORIG_HEAD. That caller is mistakenly passing the message it wants to put in the branch reflog which is not currently possible so we delay fixing that caller until we can pass the message as the branch reflog. A later commit will make it a BUG() to pass reflog_orig_head without RESET_ORIG_HEAD, that changes cannot be done here as it needs to wait for move_to_original_branch() to be fixed first. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-26create_autostash(): remove unneeded parameterPhillip Wood1-4/+4
The default_reflog parameter of create_autostash() is passed to reset_head(). However as creating a stash does not involve updating any refs the parameter is not used by reset_head(). Removing the parameter from create_autostash() simplifies the callers. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>