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* branch: consider refs under 'update-refs'Derrick Stolee2022-07-191-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The branch_checked_out() helper helps commands like 'git branch' and 'git fetch' from overwriting refs that are currently checked out in other worktrees. A future update to 'git rebase' will introduce a new '--update-refs' option which will update the local refs that point to commits that are being rebased. To avoid collisions as the rebase completes, we want to make the future data store for these refs to be considered by branch_checked_out(). The data store is a plaintext file inside the 'rebase-merge' directory for that worktree. The file lists refnames followed by two OIDs, each on separate lines. The OIDs will be used to store the original values of the refs and the to-be-written values as the rebase progresses, but can be ignored at the moment. Create a new sequencer_get_update_refs_state() method that parses this file and populates a struct string_list with the ref-OID pairs. We can then use this list to add to the current_checked_out_branches strmap used by branch_checked_out(). To properly navigate to the rebase directory for a given worktree, extract the static strbuf_worktree_gitdir() method to a public API method. We can test that this works without having Git write this file by artificially creating one in our test script, at least until 'git rebase --update-refs' is implemented and we can use it directly. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'ds/branch-checked-out' into ds/rebase-update-refJunio C Hamano2022-07-121-8/+68
|\ | | | | | | | | | | | | | | | | | | | | * ds/branch-checked-out: branch: drop unused worktrees variable fetch: stop passing around unused worktrees variable branch: fix branch_checked_out() leaks branch: use branch_checked_out() when deleting refs fetch: use new branch_checked_out() and add tests branch: check for bisects and rebases branch: add branch_checked_out() helper
| * branch: fix branch_checked_out() leaksDerrick Stolee2022-06-151-10/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The branch_checked_out() method populates a strmap linking a refname to a worktree that has that branch checked out. While unlikely, it is possible that a bug or filesystem manipulation could create a scenario where the same ref is checked out in multiple places. Further, there are some states in an interactive rebase where HEAD and REBASE_HEAD point to the same ref, leading to multiple insertions into the strmap. In either case, the strmap_put() method returns the old value which is leaked. Update branch_checked_out() to consume that pointer and free it. Add a test in t2407 that checks this erroneous case. The test "checks itself" by first confirming that the filesystem manipulations it makes trigger the branch_checked_out() logic, and then sets up similar manipulations to make it look like there are multiple worktrees pointing to the same ref. While TEST_PASSES_SANITIZE_LEAK would be helpful to demonstrate the leakage and prevent it in the future, t2407 uses helpers such as 'git clone' that cause the test to fail under that mode. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * branch: check for bisects and rebasesDerrick Stolee2022-06-151-8/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The branch_checked_out() helper was added by the previous change, but it used an over-simplified view to check if a branch is checked out. It only focused on the HEAD symref, but ignored whether a bisect or rebase was happening. Teach branch_checked_out() to check for these things, and also add tests to ensure that we do not lose this functionality in the future. Now that this test coverage exists, we can safely refactor validate_new_branchname() to use branch_checked_out(). Note that we need to prepend "refs/heads/" to the 'state.branch' after calling wt_status_check_*(). We also need to duplicate wt->path so the value is not freed at the end of the call. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * branch: add branch_checked_out() helperDerrick Stolee2022-06-151-0/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The validate_new_branchname() method contains a check to see if a branch is checked out in any non-bare worktree. This is intended to prevent a force push that will mess up an existing checkout. This helper is not suitable to performing just that check, because the method will die() when the branch is checked out instead of returning an error code. Create a new branch_checked_out() helper that performs the most basic form of this check. To ensure we can call branch_checked_out() in a loop with good performance, do a single preparation step that iterates over all worktrees and stores their current HEAD branches in a strmap. The branch_checked_out() helper can then discover these branches using a hash lookup. This helper is currently missing some key functionality. Namely: it doesn't look for active rebases or bisects which mean that the branch is "checked out" even though HEAD doesn't point to that ref. This functionality will be added in a coming change. We could use branch_checked_out() in validate_new_branchname(), but this missing functionality would be a regression. However, we have no tests that cover this case! Add a new test script that will be expanded with these cross-worktree ref updates. The current tests would still pass if we refactored validate_new_branchname() to use this version of branch_checked_out(). The next change will fix that functionality and add the proper test coverage. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'ab/env-array'Junio C Hamano2022-06-111-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | Rename .env_array member to .env in the child_process structure. * ab/env-array: run-command API users: use "env" not "env_array" in comments & names run-command API: rename "env_array" to "env"
| * | run-command API: rename "env_array" to "env"Ævar Arnfjörð Bjarmason2022-06-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Start following-up on the rename mentioned in c7c4bdeccf3 (run-command API: remove "env" member, always use "env_array", 2021-11-25) of "env_array" to "env". The "env_array" name was picked in 19a583dc39e (run-command: add env_array, an optional argv_array for env, 2014-10-19) because "env" was taken. Let's not forever keep the oddity of "*_array" for this "struct strvec", but not for its "args" sibling. This commit is almost entirely made with a coccinelle rule[1]. The only manual change here is in run-command.h to rename the struct member itself and to change "env_array" to "env" in the CHILD_PROCESS_INIT initializer. The rest of this is all a result of applying [1]: * make contrib/coccinelle/run_command.cocci.patch * patch -p1 <contrib/coccinelle/run_command.cocci.patch * git add -u 1. cat contrib/coccinelle/run_command.pending.cocci @@ struct child_process E; @@ - E.env_array + E.env @@ struct child_process *E; @@ - E->env_array + E->env I've avoided changing any comments and derived variable names here, that will all be done in the next commit. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'tk/simple-autosetupmerge'Junio C Hamano2022-05-261-1/+26
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git -c branch.autosetupmerge=simple branch $A $B" will set the $B as $A's upstream only when $A and $B shares the same name, and "git -c push.default=simple" on branch $A would push to update the branch $A at the remote $B came from. Also more places use the sole remote, if exists, before defaulting to 'origin'. * tk/simple-autosetupmerge: push: new config option "push.autoSetupRemote" supports "simple" push push: default to single remote even when not named origin branch: new autosetupmerge option 'simple' for matching branches
| * | branch: new autosetupmerge option 'simple' for matching branchesTao Klerks2022-04-291-1/+26
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the default push.default option, "simple", beginners are protected from accidentally pushing to the "wrong" branch in centralized workflows: if the remote tracking branch they would push to does not have the same name as the local branch, and they try to do a "default push", they get an error and explanation with options. There is a particular centralized workflow where this often happens: a user branches to a new local topic branch from an existing remote branch, eg with "checkout -b feature1 origin/master". With the default branch.autosetupmerge configuration (value "true"), git will automatically add origin/master as the upstream tracking branch. When the user pushes with a default "git push", with the intention of pushing their (new) topic branch to the remote, they get an error, and (amongst other things) a suggestion to run "git push origin HEAD". If they follow this suggestion the push succeeds, but on subsequent default pushes they continue to get an error - so eventually they figure out to add "-u" to change the tracking branch, or they spelunk the push.default config doc as proposed and set it to "current", or some GUI tooling does one or the other of these things for them. When one of their coworkers later works on the same topic branch, they don't get any of that "weirdness". They just "git checkout feature1" and everything works exactly as they expect, with the shared remote branch set up as remote tracking branch, and push and pull working out of the box. The "stable state" for this way of working is that local branches have the same-name remote tracking branch (origin/feature1 in this example), and multiple people can work on that remote feature branch at the same time, trusting "git pull" to merge or rebase as required for them to be able to push their interim changes to that same feature branch on that same remote. (merging from the upstream "master" branch, and merging back to it, are separate more involved processes in this flow). There is a problem in this flow/way of working, however, which is that the first user, when they first branched from origin/master, ended up with the "wrong" remote tracking branch (different from the stable state). For a while, before they pushed (and maybe longer, if they don't use -u/--set-upstream), their "git pull" wasn't getting other users' changes to the feature branch - it was getting any changes from the remote "master" branch instead (a completely different class of changes!) An experienced git user might say "well yeah, that's what it means to have the remote tracking branch set to origin/master!" - but the original user above didn't *ask* to have the remote master branch added as remote tracking branch - that just happened automatically when they branched their feature branch. They didn't necessarily even notice or understand the meaning of the "set up to track 'origin/master'" message when they created the branch - especially if they are using a GUI. Looking at how to fix this, you might think "OK, so disable auto setup of remote tracking - set branch.autosetupmerge to false" - but that will inconvenience the *second* user in this story - the one who just wanted to start working on the topic branch. The first and second users swap roles at different points in time of course - they should both have a sane configuration that does the right thing in both situations. Make this "branches have the same name locally as on the remote" workflow less painful / more obvious by introducing a new branch.autosetupmerge option called "simple", to match the same-name "push.default" option that makes similar assumptions. This new option automatically sets up tracking in a *subset* of the current default situations: when the original ref is a remote tracking branch *and* has the same branch name on the remote (as the new local branch name). Update the error displayed when the 'push.default=simple' configuration rejects a mismatching-upstream-name default push, to offer this new branch.autosetupmerge option that will prevent this class of error. With this new configuration, in the example situation above, the first user does *not* get origin/master set up as the tracking branch for the new local branch. If they "git pull" in their new local-only branch, they get an error explaining there is no upstream branch - which makes sense and is helpful. If they "git push", they get an error explaining how to push *and* suggesting they specify --set-upstream - which is exactly the right thing to do for them. This new option is likely not appropriate for users intentionally implementing a "triangular workflow" with a shared upstream tracking branch, that they "git pull" in and a "private" feature branch that they push/force-push to just for remote safe-keeping until they are ready to push up to the shared branch explicitly/separately. Such users are likely to prefer keeping the current default merge.autosetupmerge=true behavior, and change their push.default to "current". Also extend the existing branch tests with three new cases testing this option - the obvious matching-name and non-matching-name cases, and also a non-matching-ref-type case. The matching-name case needs to temporarily create an independent repo to fetch from, as the general strategy of using the local repo as the remote in these tests precludes locally branching with the same name as in the "remote". Signed-off-by: Tao Klerks <tao@klerks.biz> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | tree-wide: apply equals-null.cocciJunio C Hamano2022-05-021-1/+1
| | | | | | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'ep/maint-equals-null-cocci' into ep/equals-null-cocciJunio C Hamano2022-05-021-1/+1
|\ \ | |/ |/| | | | | | | | | * ep/maint-equals-null-cocci: tree-wide: apply equals-null.cocci tree-wide: apply equals-null.cocci contrib/coccinnelle: add equals-null.cocci
| * Merge branch 'ep/maint-equals-null-cocci' for maint-2.35Junio C Hamano2022-05-021-1/+1
| |\ | | | | | | | | | | | | | | | * ep/maint-equals-null-cocci: tree-wide: apply equals-null.cocci contrib/coccinnelle: add equals-null.cocci
| | * tree-wide: apply equals-null.cocciJunio C Hamano2022-05-021-1/+1
| | | | | | | | | | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'tk/ambiguous-fetch-refspec'Junio C Hamano2022-04-041-7/+56
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Give hint when branch tracking cannot be established because fetch refspecs from multiple remote repositories overlap. * tk/ambiguous-fetch-refspec: tracking branches: add advice to ambiguous refspec error
| * | | tracking branches: add advice to ambiguous refspec errorTao Klerks2022-04-011-7/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The error "not tracking: ambiguous information for ref" is raised when we are evaluating what tracking information to set on a branch, and find that the ref to be added as tracking branch is mapped under multiple remotes' fetch refspecs. This can easily happen when a user copy-pastes a remote definition in their git config, and forgets to change the tracking path. Add advice in this situation, explicitly highlighting which remotes are involved and suggesting how to correct the situation. Also update a test to explicitly expect that advice. Signed-off-by: Tao Klerks <tao@klerks.biz> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Merge branch 'gc/branch-recurse-submodules-fix'Junio C Hamano2022-04-041-12/+35
|\ \ \ \ | |/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A handful of obvious clean-ups around a topic that is already in 'master'. * gc/branch-recurse-submodules-fix: branch.c: simplify advice-and-die sequence branch: rework comments for future developers branch: remove negative exit code branch --set-upstream-to: be consistent when advising branch: give submodule updating advice before exit branch: support more tracking modes when recursing
| * | | branch.c: simplify advice-and-die sequenceGlen Choo2022-04-011-7/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the dwim_branch_start(), when we cannot find an appropriate upstream, we will die with the same message anyway, whether we issue an advice message. Flip the code around a bit and simplify the flow using advise_if_enabled() function. Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | branch: rework comments for future developersGlen Choo2022-04-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For two cases in which we do not explicitly pass --track=<choice> option down to the submodule--helper subprocess, we have comments that say "we do not have to pass --track", but in fact we not just do not have to, but it would be incorrect to pass any --track option to the subprocess (instead, the correct behaviour is to let the subprocess figure out what is the appropriate tracking mode to use). Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | branch: remove negative exit codeGlen Choo2022-03-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace an instance of "exit(-1)" with "exit(1)". We don't use negative exit codes - they are misleading because Unix machines will coerce them to 8-bit unsigned values, losing the sign. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | branch --set-upstream-to: be consistent when advisingGlen Choo2022-03-301-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git branch --set-upstream-to" behaves differently when advice is enabled/disabled: | | error prefix | exit code | |-----------------+--------------+-----------| | advice enabled | error: | 1 | | advice disabled | fatal: | 128 | Make both cases consistent by using die_message() when advice is enabled (this was first proposed in [1]). [1] https://lore.kernel.org/git/211210.86ee6ldwlc.gmgdl@evledraar.gmail.com Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | branch: give submodule updating advice before exitGlen Choo2022-03-301-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a bug where "hint:" was printed _before_ "fatal:" (instead of the other way around). Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | branch: support more tracking modes when recursingGlen Choo2022-03-301-3/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git branch --recurse-submodules" does not propagate "--track=inherit" or "--no-track" to submodules, which causes submodule branches to use the wrong tracking mode [1]. To fix this, pass the correct options to the "submodule--helper create-branch" child process and test for it. While we are refactoring the same code, replace "--track" with the synonymous, but more consistent-looking "--track=direct" option (introduced at the same time as "--track=inherit", d3115660b4 (branch: add flags and config to inherit tracking, 2021-12-20)). [1] This bug is partially a timing issue: "branch --recurse-submodules" was introduced around the same time as "--track=inherit", and even though I rebased "branch --recurse-submodules" on top of that, I had neglected to support the new tracking mode. Omitting "--no-track" was just a plain old mistake, though. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Merge branch 'gc/branch-recurse-submodules'Junio C Hamano2022-02-181-44/+233
|\| | | | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git branch" learned the "--recurse-submodules" option. * gc/branch-recurse-submodules: branch.c: use 'goto cleanup' in setup_tracking() to fix memory leaks branch: add --recurse-submodules option for branch creation builtin/branch: consolidate action-picking logic in cmd_branch() branch: add a dry_run parameter to create_branch() branch: make create_branch() always create a branch branch: move --set-upstream-to behavior to dwim_and_setup_tracking()
| * | branch.c: use 'goto cleanup' in setup_tracking() to fix memory leaksGlen Choo2022-02-041-3/+4
| | | | | | | | | | | | | | | | | | Signed-off-by: Glen Choo <chooglen@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | branch: add --recurse-submodules option for branch creationGlen Choo2022-02-041-0/+141
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To improve the submodules UX, we would like to teach Git to handle branches in submodules. Start this process by teaching "git branch" the --recurse-submodules option so that "git branch --recurse-submodules topic" will create the `topic` branch in the superproject and its submodules. Although this commit does not introduce breaking changes, it does not work well with existing --recurse-submodules commands because "git branch --recurse-submodules" writes to the submodule ref store, but most commands only consider the superproject gitlink and ignore the submodule ref store. For example, "git checkout --recurse-submodules" will check out the commits in the superproject gitlinks (and put the submodules in detached HEAD) instead of checking out the submodule branches. Because of this, this commit introduces a new configuration value, `submodule.propagateBranches`. The plan is for Git commands to prioritize submodule ref store information over superproject gitlinks if this value is true. Because "git branch --recurse-submodules" writes to submodule ref stores, for the sake of clarity, it will not function unless this configuration value is set. This commit also includes changes that support working with submodules from a superproject commit because "branch --recurse-submodules" (and future commands) need to read .gitmodules and gitlinks from the superproject commit, but submodules are typically read from the filesystem's .gitmodules and the index's gitlinks. These changes are: * add a submodules_of_tree() helper that gives the relevant information of an in-tree submodule (e.g. path and oid) and initializes the repository * add is_tree_submodule_active() by adding a treeish_name parameter to is_submodule_active() * add the "submoduleNotUpdated" advice to advise users to update the submodules in their trees Incidentally, fix an incorrect usage string that combined the 'list' usage of git branch (-l) with the 'create' usage; this string has been incorrect since its inception, a8dfd5eac4 (Make builtin-branch.c use parse_options., 2007-10-07). Helped-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Glen Choo <chooglen@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | branch: add a dry_run parameter to create_branch()Glen Choo2022-02-011-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a dry_run parameter to create_branch() such that dry_run = 1 will validate a new branch without trying to create it. This will be used in `git branch --recurse-submodules` to ensure that the new branch can be created in all submodules. Signed-off-by: Glen Choo <chooglen@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | branch: make create_branch() always create a branchGlen Choo2022-02-011-30/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the previous commit, there are no more invocations of create_branch() that do not create a branch because: * BRANCH_TRACK_OVERRIDE is no longer passed * clobber_head_ok = true and force = false is never passed Assert these situations, delete dead code and ensure that we're handling clobber_head_ok and force correctly by introducing tests for `git branch --force`. As a result, create_branch() now always creates a branch. Helped-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Glen Choo <chooglen@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | branch: move --set-upstream-to behavior to dwim_and_setup_tracking()Glen Choo2022-02-011-20/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit is preparation for a future commit that will simplify create_branch() so that it always creates a branch. This will allow create_branch() to accept a dry_run parameter (which is needed for "git branch --recurse-submodules"). create_branch() used to always create a branch, but 4fc5006676 (Add branch --set-upstream, 2010-01-18) changed it to also be able to set tracking information without creating a branch. Refactor the code that sets tracking information into its own functions dwim_branch_start() and dwim_and_setup_tracking(). Also change an invocation of create_branch() in cmd_branch() in builtin/branch.c to use dwim_and_setup_tracking(), since that invocation is only for setting tracking information (in "git branch --set-upstream-to"). As of this commit, create_branch() is no longer invoked in a way that does not create branches. Helped-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Glen Choo <chooglen@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'ak/protect-any-current-branch'Junio C Hamano2022-01-131-1/+1
|\ \ \ | | | | | | | | | | | | | | | | * ak/protect-any-current-branch: branch: missing space fix at line 313
| * | | branch: missing space fix at line 313Bagas Sanjaya2022-01-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The message introduced by commit 593a2a5d06 (branch: protect branches checked out in all worktrees, 2021-12-01) is missing a space in the first line, add it. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Merge branch 'js/branch-track-inherit'Junio C Hamano2022-01-101-47/+145
|\ \ \ \ | |/ / / |/| / / | |/ / | | | | | | | | | | | | | | | | | | | | | "git -c branch.autosetupmerge=inherit branch new old" makes "new" to have the same upstream as the "old" branch, instead of marking "old" itself as its upstream. * js/branch-track-inherit: config: require lowercase for branch.*.autosetupmerge branch: add flags and config to inherit tracking branch: accept multiple upstream branches for tracking
| * | branch: add flags and config to inherit trackingJosh Steadmon2021-12-211-7/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It can be helpful when creating a new branch to use the existing tracking configuration from the branch point. However, there is currently not a method to automatically do so. Teach git-{branch,checkout,switch} an "inherit" argument to the "--track" option. When this is set, creating a new branch will cause the tracking configuration to default to the configuration of the branch point, if set. For example, if branch "main" tracks "origin/main", and we run `git checkout --track=inherit -b feature main`, then branch "feature" will track "origin/main". Thus, `git status` will show us how far ahead/behind we are from origin, and `git pull` will pull from origin. This is particularly useful when creating branches across many submodules, such as with `git submodule foreach ...` (or if running with a patch such as [1], which we use at $job), as it avoids having to manually set tracking info for each submodule. Since we've added an argument to "--track", also add "--track=direct" as another way to explicitly get the original "--track" behavior ("--track" without an argument still works as well). Finally, teach branch.autoSetupMerge a new "inherit" option. When this is set, "--track=inherit" becomes the default behavior. [1]: https://lore.kernel.org/git/20180927221603.148025-1-sbeller@google.com/ Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | branch: accept multiple upstream branches for trackingJosh Steadmon2021-12-211-40/+103
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new static variant of install_branch_config() that accepts multiple remote branch names for tracking. This will be used in an upcoming commit that enables inheriting the tracking configuration from a parent branch. Currently, all callers of install_branch_config() pass only a single remote. Make install_branch_config() a small wrapper around install_branch_config_multiple_remotes() so that existing callers do not need to be changed. Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | branch: protect branches checked out in all worktreesAnders Kaseorg2021-12-021-4/+9
| | | | | | | | | | | | | | | | Refuse to force-move a branch over the currently checked out branch of any working tree, not just the current one. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | worktree: simplify find_shared_symref() memory ownership modelAnders Kaseorg2021-12-021-6/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Storing the worktrees list in a static variable meant that find_shared_symref() had to rebuild the list on each call (which is inefficient when the call site is in a loop), and also that each call invalidated the pointer returned by the previous call (which is confusing). Instead, make it the caller’s responsibility to pass in the worktrees list and manage its lifetime. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | branch: lowercase error messagesAnders Kaseorg2021-12-021-10/+10
|/ | | | | | | | | | | Documentation/CodingGuidelines says “do not end error messages with a full stop” and “do not capitalize the first word”. Clean up existing messages, some of which we will be touching in later steps in the series, that deviate from these rules in this file, as a preparation for the main part of the topic. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* advice: remove read uses of most global `advice_` variablesBen Boeckel2021-08-251-1/+1
| | | | | | | | | | | | | | | 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>
* Merge branch 'bc/hash-transition-interop-part-1'Junio C Hamano2021-05-101-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
| * hash: provide per-algorithm null OIDsbrian m. carlson2021-04-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Merge branch 'ah/plugleaks'Junio C Hamano2021-05-071-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Plug various leans reported by LSAN. * ah/plugleaks: builtin/rm: avoid leaking pathspec and seen builtin/rebase: release git_format_patch_opt too builtin/for-each-ref: free filter and UNLEAK sorting. mailinfo: also free strbuf lists when clearing mailinfo builtin/checkout: clear pending objects after diffing builtin/check-ignore: clear_pathspec before returning builtin/bugreport: don't leak prefixed filename branch: FREE_AND_NULL instead of NULL'ing real_ref bloom: clear each bloom_key after use ls-files: free max_prefix when done wt-status: fix multiple small leaks revision: free remainder of old commit list in limit_list
| * | branch: FREE_AND_NULL instead of NULL'ing real_refAndrzej Hunt2021-04-281-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | real_ref was previously populated by dwim_ref(), which allocates new memory. We need to make sure to free real_ref when discarding it. (real_ref is already being freed at the end of create_branch() - but if we discard it early then it will leak.) This fixes the following leak found while running t0002-t0099: Direct leak of 5 byte(s) in 1 object(s) allocated from: #0 0x486954 in strdup /home/abuild/rpmbuild/BUILD/llvm-11.0.0.src/build/../projects/compiler-rt/lib/asan/asan_interceptors.cpp:452:3 #1 0xdd6484 in xstrdup wrapper.c:29:14 #2 0xc0f658 in expand_ref refs.c:671:12 #3 0xc0ecf1 in repo_dwim_ref refs.c:644:22 #4 0x8b1184 in dwim_ref ./refs.h:162:9 #5 0x8b0b02 in create_branch branch.c:284:10 #6 0x550cbb in update_refs_for_switch builtin/checkout.c:1046:4 #7 0x54e275 in switch_branches builtin/checkout.c:1274:2 #8 0x548828 in checkout_branch builtin/checkout.c:1668:9 #9 0x541306 in checkout_main builtin/checkout.c:2025:9 #10 0x5395fa in cmd_checkout builtin/checkout.c:2077:8 #11 0x4d02a8 in run_builtin git.c:467:11 #12 0x4cbfe9 in handle_builtin git.c:719:3 #13 0x4cf04f in run_argv git.c:808:4 #14 0x4cb85a in cmd_main git.c:939:19 #15 0x820cf6 in main common-main.c:52:11 #16 0x7f30bd9dd349 in __libc_start_main (/lib64/libc.so.6+0x24349) Signed-off-by: Andrzej Hunt <ajrhunt@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* / merge-ort: write $GIT_DIR/AUTO_MERGE whenever we hit a conflictElijah Newren2021-03-201-0/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* wt-status: tolerate dangling marksJonathan Tan2020-09-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When a user checks out the upstream branch of HEAD, the upstream branch not being a local branch, and then runs "git status", like this: git clone $URL client cd client git checkout @{u} git status no status is printed, but instead an error message: fatal: HEAD does not point to a branch (This error message when running "git branch" persists even after checking out other things - it only stops after checking out a branch.) This is because "git status" reads the reflog when determining the "HEAD detached" message, and thus attempts to DWIM "@{u}", but that doesn't work because HEAD no longer points to a branch. Therefore, when calculating the status of a worktree, tolerate dangling marks. This is done by adding an additional parameter to dwim_ref() and repo_dwim_ref(). Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'es/get-worktrees-unsort'Junio C Hamano2020-07-071-1/+1
|\ | | | | | | | | | | | | | | API cleanup for get_worktrees() * es/get-worktrees-unsort: worktree: drop get_worktrees() unused 'flags' argument worktree: drop get_worktrees() special-purpose sorting option
| * worktree: drop get_worktrees() unused 'flags' argumentEric Sunshine2020-06-221-1/+1
| | | | | | | | | | | | | | | | | | get_worktrees() accepts a 'flags' argument, however, there are no existing flags (the lone flag GWT_SORT_LINKED was recently retired) and no behavior which can be tweaked. Therefore, drop the 'flags' argument. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | merge: teach --autostash optionDenton Liu2020-04-101-0/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In rebase, one can pass the `--autostash` option to cause the worktree to be automatically stashed before continuing with the rebase. This option is missing in merge, however. Implement the `--autostash` option and corresponding `merge.autoStash` option in merge which stashes before merging and then pops after. This option is useful when a developer has some local changes on a topic branch but they realize that their work depends on another branch. Previously, they had to run something like git fetch ... git stash push git merge FETCH_HEAD git stash pop but now, that is reduced to git fetch ... git merge --autostash FETCH_HEAD When an autostash is generated, it is automatically reapplied to the worktree only in three explicit situations: 1. An incomplete merge is commit using `git commit`. 2. A merge completes successfully. 3. A merge is aborted using `git merge --abort`. In all other situations where the merge state is removed using remove_merge_branch_state() such as aborting a merge via `git reset --hard`, the autostash is saved into the stash reflog instead keeping the worktree clean. Helped-by: Phillip Wood <phillip.wood@dunelm.org.uk> Suggested-by: Alban Gruin <alban.gruin@gmail.com> Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'nd/switch-and-restore'Junio C Hamano2019-07-101-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Two new commands "git switch" and "git restore" are introduced to split "checking out a branch to work on advancing its history" and "checking out paths out of the index and/or a tree-ish to work on advancing the current history" out of the single "git checkout" command. * nd/switch-and-restore: (46 commits) completion: disable dwim on "git switch -d" switch: allow to switch in the middle of bisect t2027: use test_must_be_empty Declare both git-switch and git-restore experimental help: move git-diff and git-reset to different groups doc: promote "git restore" user-manual.txt: prefer 'merge --abort' over 'reset --hard' completion: support restore t: add tests for restore restore: support --patch restore: replace --force with --ignore-unmerged restore: default to --source=HEAD when only --staged is specified restore: reject invalid combinations with --staged restore: add --worktree and --staged checkout: factor out worktree checkout code restore: disable overlay mode by default restore: make pathspec mandatory restore: take tree-ish from --source option instead checkout: split part of it to new command 'restore' doc: promote "git switch" ...
| * checkout: inform the user when removing branch stateNguyễn Thái Ngọc Duy2019-04-021-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After a successful switch, if a merge, cherry-pick or revert is ongoing, it is canceled. This behavior has been with us from the very early beginning, soon after git-merge was created but never actually documented [1]. It may be a good idea to be transparent and tell the user if some operation is canceled. I consider this a better way of telling the user than just adding a sentence or two in git-checkout.txt, which will be mostly ignored anyway. PS. Originally I wanted to print more details like warning: cancelling an in-progress merge from <SHA-1> which may allow some level of undo if the user wants to. But that seems a lot more work. Perhaps it can be improved later if people still want that. [1] ... and I will try not to argue whether it is a sensible behavior. There is some more discussion here if people are interested: CACsJy8Axa5WsLSjiscjnxVK6jQHkfs-gH959=YtUvQkWriAk5w@mail.gmail.com Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'nd/merge-quit'Junio C Hamano2019-06-131-2/+7
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | "git merge" learned "--quit" option that cleans up the in-progress merge while leaving the working tree and the index still in a mess. * nd/merge-quit: merge: add --quit merge: remove drop_save() in favor of remove_merge_branch_state()
| * | merge: remove drop_save() in favor of remove_merge_branch_state()Nguyễn Thái Ngọc Duy2019-05-131-3/+8
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | Both remove_branch_state() and drop_save() delete almost the same set of files about the current merge state. The only difference is MERGE_RR but it should also be cleaned up after a successful merge, which is what drop_save() is for. Make a new function that deletes all merge-related state files and use it instead of drop_save(). This function will also be used in the next patch that introduces --quit. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>