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2022-03-17fetch: fetch unpopulated, changed submodulesGlen Choo6-46/+477
"git fetch --recurse-submodules" only considers populated submodules (i.e. submodules that can be found by iterating the index), which makes "git fetch" behave differently based on which commit is checked out. As a result, even if the user has initialized all submodules correctly, they may not fetch the necessary submodule commits, and commands like "git checkout --recurse-submodules" might fail. Teach "git fetch" to fetch cloned, changed submodules regardless of whether they are populated. This is in addition to the current behavior of fetching populated submodules (which is always attempted regardless of what was fetched in the superproject, or even if nothing was fetched in the superproject). A submodule may be encountered multiple times (via the list of populated submodules or via the list of changed submodules). When this happens, "git fetch" only reads the 'populated copy' and ignores the 'changed copy'. Amend the verify_fetch_result() test helper so that we can assert on which 'copy' is being read. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-08submodule: move logic into fetch_task_create()Glen Choo1-47/+52
get_fetch_task() gets a fetch task by iterating the index; a future commit will introduce a similar function, get_fetch_task_from_changed(), that gets a fetch task from the list of changed submodules. Both functions are similar in that they need to: * create a fetch task * initialize the submodule repo for the fetch task * determine the default recursion mode Move all of this logic into fetch_task_create() so that it is no longer split between fetch_task_create() and get_fetch_task(). This will make it easier to share code with get_fetch_task_from_changed(). Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-08submodule: extract get_fetch_task()Glen Choo1-25/+36
get_next_submodule() configures the parallel submodule fetch by performing two functions: * iterate the index to find submodules * configure the child processes to fetch the submodules found in the previous step Extract the index iterating code into an iterator function, get_fetch_task(), so that get_next_submodule() is agnostic of how to find submodules. This prepares for a subsequent commit will teach the fetch machinery to also iterate through the list of changed submodules (in addition to the index). Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-08submodule: store new submodule commits oid_array in a structGlen Choo1-18/+34
This commit prepares for a future commit that will teach `git fetch --recurse-submodules` how to fetch submodules that are present in <gitdir>/modules, but are not populated. To do this, we need to store more information about the changed submodule so that we can read the submodule configuration from the superproject commit instead of the filesystem. Refactor the changed submodules string_list.util to hold a struct instead of an oid_array. This struct only holds the new_commits oid_array for now; more information will be added later. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-08submodule: inline submodule_commits() into callerGlen Choo1-16/+6
When collecting the string_list of changed submodule names, the new submodules commits are stored in the string_list_item.util as an oid_array. A subsequent commit will replace the oid_array with a struct that has more information. Prepare for this change by inlining submodule_commits() (which inserts into the string_list and initializes the string_list_item.util) into its only caller so that the code is easier to refactor later. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-08submodule: make static functions read submodules from commitsGlen Choo1-10/+19
A future commit will teach "fetch --recurse-submodules" to fetch unpopulated submodules. To prepare for this, teach the necessary static functions how to read submodules from superproject commits using a "treeish_name" argument (instead of always reading from the index and filesystem) but do not actually change where submodules are read from. Submodules will be read from commits when we fetch unpopulated submodules. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-08t5526: create superproject commits with test helperGlen Choo1-50/+45
A few tests in t5526 use this pattern as part of their setup: 1. Create new commits in the upstream submodules (using add_upstream_commit()). 2. In the upstream superprojects, add the new submodule commits from the previous step. A future commit will add more tests with this pattern, so reduce the verbosity of present and future tests by introducing a test helper that creates superproject commits. Since we now have two helpers that add upstream commits, rename add_upstream_commit() to add_submodule_commits(). Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-08t5526: stop asserting on stderr literallyGlen Choo1-61/+56
In the previous commit message, we noted that not all of the "git fetch" stderr is relevant to the tests. Most of the test setup lines are dedicated to these details of the stderr: 1. which repos (super/sub/deep) are involved in the fetch 2. the head of the remote-tracking branch before the fetch (i.e. $head1) 3. the head of the remote-tracking branch after the fetch (i.e. $head2) 1. and 3. are relevant because they tell us that the expected commit is fetched by the expected repo, but 2. is completely irrelevant. Stop asserting on $head1 by replacing it with a dummy value in the actual and expected output. Do this by introducing test helpers (write_expected_*()) that make it easier to construct the expected output, and use sed to munge the actual output. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-08t5526: introduce test helper to assert on fetchesGlen Choo1-55/+84
Tests in t/t5526-fetch-submodules.sh are unnecessarily noisy: * The tests have extra logic in order to reproduce the expected stderr literally, but not all of these details (e.g. the head of the remote-tracking branch before the fetch) are relevant to the test. * The expect.err file is constructed by the add_upstream_commit() helper as input into test_cmp, but most tests fetch a different combination of repos from expect.err. This results in noisy tests that modify parts of that expect.err to generate the expected output. To address both of these issues, introduce a verify_fetch_result() helper to t/t5526-fetch-submodules.sh that asserts on the output of "git fetch --recurse-submodules" and handles the ordering of expect.err. As a result, the tests no longer construct expect.err manually. Tests still consider the old head of the remote-tracking branch ("$head1"), but that will be fixed in a later commit. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-24The seventh batchJunio C Hamano1-0/+12
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-18The sixth batchJunio C Hamano1-0/+34
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-18The fifth batchJunio C Hamano1-0/+24
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-17The fourth batchJunio C Hamano1-0/+28
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-14mailmap: change primary address for Derrick StoleeDerrick Stolee1-2/+3
Stolee transitioned from Microsoft to GitHub in July 2020, but continued to use <dstolee@microsoft.com> because it was a valid address. He also used <stolee@gmail.com> to communicate with the mailing list since writing plaintext emails is difficult in Outlook. However, recent issues with GMail delaying mailing list messages created a need to change his primary email address. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-14doc: clarify interaction between 'eol' and text=autobrian m. carlson1-5/+6
The `eol` takes effect on text files only when the index has the contents in LF line endings. Paths with contents in CRLF line endings in the index may become dirty unless text=auto. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-12The third batchJunio C Hamano1-0/+19
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-12t0001: replace "test [-d|-f]" with test_path_is_* functionsShaoxuan Yuan1-1/+2
Signed-off-by: Shaoxuan Yuan <shaoxuan.yuan02@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-11fetch-pack: parameterize message containing 'ready' keywordBagas Sanjaya1-2/+10
The protocol keyword 'ready' isn't meant for translation. Pass it as parameter instead of spell it in die() message (and potentially confuse translators). Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-11log: add a --no-graph optionAlex Henrie5-4/+87
It's useful to be able to countermand a previous --graph option, for example if `git log --graph` is run via an alias. Signed-off-by: Alex Henrie <alexhenrie24@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-11log: fix memory leak if --graph is passed multiple timesAlex Henrie3-0/+18
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-10fetch: skip computing output width when not printing anythingPatrick Steinhardt1-2/+6
When updating references via git-fetch(1), then by default we report to the user which references have been changed. This output is formatted in a nice table such that the different columns are aligned. Because the first column contains abbreviated object IDs we thus need to iterate over all refs which have changed and compute the minimum length for their respective abbreviated hashes. While this effort makes sense in most cases, it is wasteful when the user passes the `--quiet` flag: we don't print the summary, but still compute the length. Skip computing the summary width when the user asked for us to be quiet. This gives us a speedup of nearly 10% when doing a mirror-fetch in a repository with thousands of references being updated: Benchmark 1: git fetch --quiet +refs/*:refs/* (HEAD~) Time (mean ± σ): 96.078 s ± 0.508 s [User: 91.378 s, System: 10.870 s] Range (min … max): 95.449 s … 96.760 s 5 runs Benchmark 2: git fetch --quiet +refs/*:refs/* (HEAD) Time (mean ± σ): 88.214 s ± 0.192 s [User: 83.274 s, System: 10.978 s] Range (min … max): 87.998 s … 88.446 s 5 runs Summary 'git fetch --quiet +refs/*:refs/* (HEAD)' ran 1.09 ± 0.01 times faster than 'git fetch --quiet +refs/*:refs/* (HEAD~)' Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-10fetch-pack: use commit-graph when computing cutoffPatrick Steinhardt1-12/+16
During packfile negotiation we iterate over all refs announced by the remote side to check whether their IDs refer to commits already known to us. If a commit is known to us already, then its date is a potential cutoff point for commits we have in common with the remote side. There is potentially a lot of commits announced by the remote depending on how many refs there are in the remote repository, and for every one of them we need to search for it in our object database and, if found, parse the corresponding object to find out whether it is a candidate for the cutoff date. This can be sped up by trying to look up commits via the commit-graph first, which is a lot more efficient. Benchmarks in a repository with about 2,1 million refs and an up-to-date commit-graph show an almost 20% speedup when mirror-fetching: Benchmark 1: git fetch +refs/*:refs/* (v2.35.0) Time (mean ± σ): 115.587 s ± 2.009 s [User: 109.874 s, System: 11.305 s] Range (min … max): 113.584 s … 118.820 s 5 runs Benchmark 2: git fetch +refs/*:refs/* (HEAD) Time (mean ± σ): 96.859 s ± 0.624 s [User: 91.948 s, System: 10.980 s] Range (min … max): 96.180 s … 97.875 s 5 runs Summary 'git fetch +refs/*:refs/* (HEAD)' ran 1.19 ± 0.02 times faster than 'git fetch +refs/*:refs/* (v2.35.0)' Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-10t1410: mark bufsize boundary test as REFFILESHan-Wen Nienhuys1-1/+1
This test fiddles with files under .git/logs to recreate a condition that is unlikely to warrant special attention under reftable, as reflog blocks are zlib compressed. Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-10t1410: use test-tool ref-store to inspect reflogsHan-Wen Nienhuys1-1/+2
This makes the test compatible with reftable (it doesn't pass yet for other reasons, unfortunately) Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-10glossary: describe "worktree"Junio C Hamano1-2/+11
We have description on "per worktree ref", but "worktree" is not described in the glossary. We do have "working tree", though. Casually put, a "working tree" is what your editor and compiler interacts with. "worktree" is a mechanism to allow one or more "working tree"s to be attached to a repository and used to check out different commits and branches independently, which includes not just a "working tree" but also repository metadata like HEAD, the index to support simultaneous use of them. Historically, we used these terms interchangeably but we have been trying to use "working tree" when we mean it, instead of "worktree". Most of the existing references to "working tree" in the glossary do refer primarily to the working tree portion, except for one that said refs like HEAD and refs/bisect/* are per "working tree", but it is more precise to say they are per "worktree". Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-10t/t0015-hash.sh: remove unnecessary '\' at line endJaydeep Das1-3/+3
The `|` at line end already imples that the statement is not over. So a `\` after that is redundant. Signed-off-by: Jaydeep P Das <jaydeepjd.8914@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-09The second batch for 2.36Junio C Hamano1-1/+59
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-09midx: prevent writing a .bitmap without any objectsTaylor Blau2-0/+31
When trying to write a MIDX, we already prevent the case where there weren't any packs present, and thus we would have written an empty MIDX. But there is another "empty" case, which is more interesting, and we don't yet handle. If we try to write a MIDX which has at least one pack, but those packs together don't contain any objects, we will encounter a BUG() when trying to use the bitmap corresponding to that MIDX, like so: $ git rev-parse HEAD | git pack-objects --revs --use-bitmap-index --stdout >/dev/null BUG: pack-revindex.c:394: pack_pos_to_midx: out-of-bounds object at 0 (note that in the above reproduction, both `--use-bitmap-index` and `--stdout` are important, since without the former we won't even both to load the .bitmap, and without the latter we wont attempt pack reuse). The problem occurs when we try to discover the identity of the preferred pack to determine which range if any of existing packs we can reuse verbatim. This path is: `reuse_packfile_objects()` -> `reuse_partial_packfile_from_bitmap()` -> `midx_preferred_pack()`. #4 0x000055555575401f in pack_pos_to_midx (m=0x555555997160, pos=0) at pack-revindex.c:394 #5 0x00005555557502c8 in midx_preferred_pack (bitmap_git=0x55555599c280) at pack-bitmap.c:1431 #6 0x000055555575036c in reuse_partial_packfile_from_bitmap (bitmap_git=0x55555599c280, packfile_out=0x5555559666b0 <reuse_packfile>, entries=0x5555559666b8 <reuse_packfile_objects>, reuse_out=0x5555559666c0 <reuse_packfile_bitmap>) at pack-bitmap.c:1452 #7 0x00005555556041f6 in get_object_list_from_bitmap (revs=0x7fffffffcbf0) at builtin/pack-objects.c:3658 #8 0x000055555560465c in get_object_list (ac=2, av=0x555555997050) at builtin/pack-objects.c:3765 #9 0x0000555555605e4e in cmd_pack_objects (argc=0, argv=0x7fffffffe920, prefix=0x0) at builtin/pack-objects.c:4154 Since neither the .bitmap or MIDX stores the identity of the preferred pack, we infer it by trying to load the first object in pseudo-pack order, and then asking the MIDX which pack was chosen to represent that object. But this fails our bounds check, since there are zero objects in the MIDX to begin with, which results in the BUG(). We could catch this more carefully in `midx_preferred_pack()`, but signaling the absence of a preferred pack out to all of its callers is somewhat awkward. Instead, let's avoid writing a MIDX .bitmap without any objects altogether. We catch this case in `write_midx_internal()`, and emit a warning if the caller indicated they wanted to write a bitmap before clearing out the relevant flags. If we somehow got to write_midx_bitmap(), then we will call BUG(), but this should now be an unreachable path. Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-08completion: handle unusual characters for sparse-checkoutLessley Dennington2-13/+60
Update the __gitcomp_directories method to de-quote and handle unusual characters in directory names. Although this initially involved an attempt to re-use the logic in __git_index_files, this method removed subdirectories (e.g. folder1/0/ became folder1/), so instead new custom logic was placed directly in the __gitcomp_directories method. Note there are two tests for this new functionality - one for spaces and accents and one for backslashes and tabs. The backslashes and tabs test uses FUNNYNAMES to avoid running on Windows. This is because: 1. Backslashes are explicitly not allowed in Windows file paths. 2. Although tabs appear to be allowed when creating a file in a Windows bash shell, they actually are not renderable (and appear as empty boxes in the shell). Co-authored-by: Johannes Schindelin <johannes.schindelin@gmx.de> Co-authored-by: Lessley Dennington <lessleydennington@gmail.com> Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Lessley Dennington <lessleydennington@gmail.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-08completion: improve sparse-checkout cone mode directory completionLessley Dennington2-17/+53
Use new __gitcomp_directories method to complete directory names in cone mode sparse-checkouts. This method addresses the caveat of poor performance in monorepos from the previous commit (by completing only one level of directories). The unusual character caveat from the previous commit will be fixed by the final commit in this series. Co-authored-by: Elijah Newren <newren@gmail.com> Co-authored-by: Lessley Dennington <lessleydennington@gmail.com> Signed-off-by: Lessley Dennington <lessleydennington@gmail.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-08completion: address sparse-checkout issuesLessley Dennington2-8/+91
Correct multiple issues with tab completion of the git sparse-checkout command. These issues were: 1. git sparse-checkout <TAB> previously resulted in an incomplete list of subcommands (it was missing reapply and add). 2. Subcommand options were not tab-completable. 3. git sparse-checkout set <TAB> and git sparse-checkout add <TAB> showed both file names and directory names. While this may be a less surprising behavior for non-cone mode, cone mode sparse checkouts should complete only directory names. Note that while the new strategy of just using git ls-tree to complete on directory names is simple and a step in the right direction, it does have some caveats. These are: 1. Likelihood of poor performance in large monorepos (as a result of recursively completing directory names). 2. Inability to handle paths containing unusual characters. These caveats will be fixed by subsequent commits in this series. Signed-off-by: Lessley Dennington <lessleydennington@gmail.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-08t0012: verify that built-ins handle `-h` even without gitdirJohannes Schindelin1-1/+6
We just fixed a class of recently introduced bugs where calling, say, `git fetch -h` outside a repository would not show the usage but instead show an ugly `BUG` message. Let's verify that this does not regress anymore. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-08checkout/fetch/pull/pack-objects: allow `-h` outside a repositoryJohannes Schindelin4-10/+17
When we taught these commands about the sparse index, we did not account for the fact that the `cmd_*()` functions _can_ be called without a gitdir, namely when `-h` is passed to show the usage. A plausible approach to address this is to move the `prepare_repo_settings()` calls right after the `parse_options()` calls: The latter will never return when it handles `-h`, and therefore it is safe to assume that we have a `gitdir` at that point, as long as the built-in is marked with the `RUN_SETUP` flag. However, it is unfortunately not that simple. In `cmd_pack_objects()`, for example, the repo settings need to be fully populated so that the command-line options `--sparse`/`--no-sparse` can override them, not the other way round. Therefore, we choose to imitate the strategy taken in `cmd_diff()`, where we simply do not bother to prepare and initialize the repo settings unless we have a `gitdir`. This fixes https://github.com/git-for-windows/git/issues/3688 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-07ls-remote & transport API: release "struct transport_ls_refs_options"Ævar Arnfjörð Bjarmason7-15/+26
Fix a memory leak in codepaths that use the "struct transport_ls_refs_options" API. Since the introduction of the struct in 39835409d10 (connect, transport: encapsulate arg in struct, 2021-02-05) the caller has been responsible for freeing it. That commit in turn migrated code originally added in 402c47d9391 (clone: send ref-prefixes when using protocol v2, 2018-07-20) and b4be74105fe (ls-remote: pass ref prefixes when requesting a remote's refs, 2018-03-15). Only some of those codepaths were releasing the allocated resources of the struct, now all of them will. Mark the "t/t5511-refspec.sh" test as passing when git is compiled with SANITIZE=leak. They'll now be listed as running under the "GIT_TEST_PASSING_SANITIZE_LEAK=true" test mode (the "linux-leaks" CI target). Previously 24/47 tests would fail. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-07hash-object: fix a trivial leak in --pathÆvar Arnfjörð Bjarmason2-2/+8
Fix a memory leak that happened when the --path option was provided. This leak has been with us ever since the option was added in 39702431500 (add --path option to git hash-object, 2008-08-03). We can now mark "t1007-hash-object.sh" as passing when git is compiled with SANITIZE=leak. It'll now run in the the "GIT_TEST_PASSING_SANITIZE_LEAK=true" test mode (the "linux-leaks" CI target). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-05The first batchJunio C Hamano1-3/+23
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-04t0051: use "skip_all" under !MINGW in single-test fileÆvar Arnfjörð Bjarmason1-1/+6
Have this file added in 06ba9d03e34 (t0051: test GIT_TRACE to a windows named pipe, 2018-09-11) use the same "skip_all" pattern as an existing Windows-only test added in 0e218f91c29 (mingw: unset PERL5LIB by default, 2018-10-30) uses. This way TAP consumers like "prove" will show a nice summary when the test is skipped. Instead of: $ prove t0051-windows-named-pipe.sh [...] t0051-windows-named-pipe.sh .. ok [...] We will prominently show a "skipped" notice: $ prove t0051-windows-named-pipe.sh [...] t0051-windows-named-pipe.sh ... skipped: skipping Windows-specific tests [...] This is because we are now making use of the right TAP-y way to communicate this to the consumer. I.e. skipping the whole test file, v.s. skipping individual tests (in this case there's only one test). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-04branch.c: use 'goto cleanup' in setup_tracking() to fix memory leaksGlen Choo1-3/+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>
2022-02-04branch: add --recurse-submodules option for branch creationGlen Choo14-20/+694
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>
2022-02-03doc: check-ignore: code-quote an exclamation markPhilip Oakley1-2/+2
The plain quoted exclamation mark renders as italics in the Windows pdf help manual. Fix this with back-tick quoting and surrounding double quotes as exemplified by the gitignore.txt guide. While at it, fix the surrounding double quotes for the other special characters usages. Signed-off-by: Philip Oakley <philipoakley@iee.email> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02fix typo in git-mktree.txtLiginity Lee1-1/+1
fix a typo: change "as" to "a". Signed-off-by: Liginity Lee <liginity@outlook.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02completion: add a GIT_COMPLETION_SHOW_ALL_COMMANDSÆvar Arnfjörð Bjarmason2-1/+43
Add a GIT_COMPLETION_SHOW_ALL_COMMANDS=1 configuration setting to go with the existing GIT_COMPLETION_SHOW_ALL=1 added in c099f579b98 (completion: add GIT_COMPLETION_SHOW_ALL env var, 2020-08-19). This will include plumbing commands such as "cat-file" in "git <TAB>" and "git c<TAB>" completion. Without/with this I have 134 and 243 completion with git <TAB>, respectively. It was already possible to do this by tweaking GIT_TESTING_PORCELAIN_COMMAND_LIST= from the outside, that testing variable was added in 84a97131065 (completion: let git provide the completable command list, 2018-05-20). Doing this before loading git-completion.bash worked: export GIT_TESTING_PORCELAIN_COMMAND_LIST="$(git --list-cmds=builtins,main,list-mainporcelain,others,nohelpers,alias,list-complete,config)" But such testing variables are not meant to be used from the outside, and we make no guarantees that those internal won't change. So let's expose this as a dedicated configuration knob. It would be better to teach --list-cmds=* a new category which would include all of these groups, but that's a larger change that we can leave for some other time. 1. https://lore.kernel.org/git/CAGP6POJ9gwp+t-eP3TPkivBLLbNb2+qj=61Mehcj=1BgrVOSLA@mail.gmail.com/ Reported-by: Hongyi Zhao <hongyi.zhao@gmail.com> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02completion tests: re-source git-completion.bash in a subshellÆvar Arnfjörð Bjarmason1-21/+29
Change tests of git-completion.bash that re-source it to do so inside a subshell. Re-sourcing it will clobber variables it sets, and in the case of the "GIT_COMPLETION_SHOW_ALL=1" test added in ca2d62b7879 (parse-options: don't complete option aliases by default, 2021-07-16) change the behavior of the completion persistently. Aside from the addition of "(" and ")" on new lines this is an indentation-only change, only the "(" and ")" lines are changed under "git diff -w". So let's change that test, and for good measure do the same for the three tests that precede it, which were added in 8b0eaa41f23 (completion: clear cached --options when sourcing the completion script, 2018-03-22). The may not be wrong, but doing this establishes a more reliable pattern for future tests, which might use these as a template to copy. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02t/lib-read-tree-m-3way: indent with tabsShaoxuan Yuan1-48/+48
As Documentation/CodingGuidelines says, our shell scripts (including tests) are to use HT for indentation, but this script uses 4-column indent with SP. Fix this. Signed-off-by: Shaoxuan Yuan <shaoxuan.yuan02@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02t/lib-read-tree-m-3way: modernize styleShaoxuan Yuan1-77/+77
Many invocations of the test_expect_success command in this file are written in old style where the command, an optional prerequisite, and the test title are written on separate lines, and the executable script string begins on its own line, and these lines are pasted together with backslashes as necessary. An invocation of the test_expect_success command in modern test scripts however writes the prerequisite and the title on the same line as the test_expect_success command itself, and ends the line with a single quote that begins the executable script string. Update the style for uniformity. Signed-off-by: Shaoxuan Yuan <shaoxuan.yuan02@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02builtin/diff.c: fix "git-diff" usage string typoShaoxuan Yuan1-3/+3
Remove mistaken right square brackets from "git-diff" usage string. Make the usage string conform to "git-diff" documentation (Documentation/git-diff.txt). Signed-off-by: Shaoxuan Yuan <shaoxuan.yuan02@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02patch-id: fix scan_hunk_header on diffs with 1 line of before/afterJerry Zhang2-3/+37
Normally diffs will contain a hunk header of the format "@@ -2,2 +2,15 @@ code". However when there is only 1 line of change, the unified diff format allows for the second comma separated value to be omitted in either before or after line counts. This can produce hunk headers that look like "@@ -2 +2,18 @@ code" or "@@ -2,2 +2 @@ code". As a result, scan_hunk_header mistakenly returns the line number as line count, which then results in unpredictable parsing errors with the rest of the patch, including giving multiple lines of output for a single commit. Fix by explicitly setting line count to 1 when there is no comma, and add a test. apply.c contains this same logic except it is correct. A worthwhile future project might be to unify these two diff parsers so they both benefit from fixes. Signed-off-by: Jerry Zhang <jerry@skydio.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02patch-id: fix antipatterns in testsJerry Zhang1-33/+31
Clean up the tests for patch-id by moving file preparation tasks inside the test body and redirecting files directly into stdin instead of using 'cat'. Signed-off-by: Jerry Zhang <jerry@skydio.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02diff-merges: avoid history simplifications when diffing mergesElijah Newren2-1/+59
Doing diffs for merges are special; they should typically avoid history simplification. For example, with git log --diff-merges=first-parent -- path the default history simplification would remove merge commits from consideration if the file "path" matched the second parent. That is counter to what the user wants when looking for first-parent diffs. Similar comments can be made for --diff-merges=separate (which diffs against both parents) and --diff-merges=remerge (which diffs against a remerge of the merge commit). However, history simplification still makes sense if not doing diffing merges, and it also makes sense for the combined and dense-combined forms of diffing merges (because both of those are defined to only show a diff when the merge result at the relevant paths differs from *both* parents). So, for separate, first-parent, and remerge styles of diff-merges, turn off history simplification. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-02-02merge-ort: mark conflict/warning messages from inner merges as omittableElijah Newren1-1/+3
A recursive merge involves merging the merge bases of the two branches being merged. Such an inner merge can itself generate conflict notices. While such notices may be useful when initially trying to create a merge, they seem to just be noise when investigating merges later with --remerge-diff. (Especially when both sides of the outer merge resolved the conflict the same way leading to no overall conflict.) Remove them. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>