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2021-12-22reflog: reduce scope of "struct rev_info"Libravatar Ævar Arnfjörð Bjarmason1-6/+7
Change the "cmd.stalefix" handling added in 1389d9ddaa6 (reflog expire --fix-stale, 2007-01-06) to use a locally scoped "struct rev_info". This code relies on mark_reachable_objects() twiddling flags in the walked objects. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22reflog expire: don't use lookup_commit_reference_gently()Libravatar Ævar Arnfjörð Bjarmason1-2/+1
In the initial implementation of "git reflog" in 4264dc15e19 (git reflog expire, 2006-12-19) we had this lookup_commit_reference_gently(). I don't think we've ever found tags that we need to recursively dereference in reflogs, so this should at least be changed to a "lookup commit" as I'm doing here, although I can't think of a way where it mattered in practice. I also think we'd probably like to just die here if we have a NULL object, but as this code needs to handle potentially broken repositories let's just show an "error" but continue, the non-quiet lookup_commit() will do for us. None of our tests cover the case where "commit" is NULL after this lookup. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22reflog expire: refactor & use "tip_commit" only for UE_NORMALLibravatar Ævar Arnfjörð Bjarmason1-7/+7
Add an intermediate variable for "tip_commit" in reflog_expiry_prepare(), and only add it to the struct if we're handling the UE_NORMAL case. The code behaves the same way as before, but this makes the control flow clearer, and the shorter name allows us to fold a 4-line i/else into a one-line ternary instead. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22reflog expire: use "switch" over enum valuesLibravatar Ævar Arnfjörð Bjarmason1-24/+33
Change code added in 03cb91b18cc (reflog --expire-unreachable: special case entries in "HEAD" reflog, 2010-04-09) to use a "switch" statement with an exhaustive list of "case" statements instead of doing numeric comparisons against the enum labels. Now we won't assume that "x != UE_ALWAYS" means "(x == UE_HEAD || x || UE_NORMAL)". That assumption is true now, but we'd introduce subtle bugs here if that were to change, now the compiler will notice and error out on such errors. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22reflog: change one->many worktree->refnames to use a string_listLibravatar Ævar Arnfjörð Bjarmason1-29/+18
Change the FLEX_ARRAY pattern added in bda3a31cc79 (reflog-expire: Avoid creating new files in a directory inside readdir(3) loop, 2008-01-25) the string-list API instead. This does not change any behavior, allows us to delete much of this code as it's replaced by things we get from the string-list API for free, as a result we need just one struct to keep track of this data, instead of two. The "DUP" -> "string_list_append_nodup(..., strbuf_detach(...))" pattern here is the same as that used in a recent memory leak fix in b202e51b154 (grep: fix a "path_list" memory leak, 2021-10-22). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22reflog expire: narrow scope of "cb" in cmd_reflog_expire()Libravatar Ævar Arnfjörð Bjarmason1-16/+15
As with the preceding change for "reflog delete", change the "cb_data" we pass to callbacks to be &cb.cmd itself, instead of passing &cb and having the callback lookup cb->cmd. This makes it clear that the "cb" itself is the same memzero'd structure on each iteration of the for-loops that use &cb, except for the "cmd" member. The "struct expire_reflog_policy_cb" we pass to reflog_expire() will have the members that aren't "cmd" modified by the callbacks, but before we invoke them everything except "cmd" is zero'd out. This included the "tip_commit", "mark_list" and "tips". It might have looked as though we were re-using those between iterations, but the first thing we did in reflog_expiry_prepare() was to either NULL them, or clobber them with another value. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22reflog delete: narrow scope of "cmd" passed to count_reflog_ent()Libravatar Ævar Arnfjörð Bjarmason1-11/+11
Change the "cb_data" we pass to the count_reflog_ent() to be the &cb.cmd itself, instead of passing &cb and having the callback lookup cb->cmd. This makes it clear that the "cb" itself is the same memzero'd structure on each iteration of the for-loop that uses &cb, except for the "cmd" member. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-21Merge branch 'ld/sparse-diff-blame'Libravatar Junio C Hamano2-0/+8
Teach diff and blame to work well with sparse index. * ld/sparse-diff-blame: blame: enable and test the sparse index diff: enable and test the sparse index diff: replace --staged with --cached in t1092 tests repo-settings: prepare_repo_settings only in git repos test-read-cache: set up repo after git directory commit-graph: return if there is no git directory git: ensure correct git directory setup with -h
2021-12-21Merge branch 'en/name-rev-shorter-output'Libravatar Junio C Hamano1-4/+13
"git name-rev" has been tweaked to give output that is shorter and easier to understand. * en/name-rev-shorter-output: name-rev: prefer shorter names over following merges
2021-12-21Merge branch 'ak/protect-any-current-branch'Libravatar Junio C Hamano4-100/+124
"git fetch" without the "--update-head-ok" option ought to protect a checked out branch from getting updated, to prevent the working tree that checks it out to go out of sync. The code was written before the use of "git worktree" got widespread, and only checked the branch that was checked out in the current worktree, which has been updated. (originally called ak/fetch-not-overwrite-any-current-branch) * ak/protect-any-current-branch: branch: protect branches checked out in all worktrees receive-pack: protect current branch for bare repository worktree receive-pack: clean dead code from update_worktree() fetch: protect branches checked out in all worktrees worktree: simplify find_shared_symref() memory ownership model branch: lowercase error messages receive-pack: lowercase error messages fetch: lowercase error messages
2021-12-21Merge branch 'fs/ssh-signing-key-lifetime'Libravatar Junio C Hamano1-2/+4
Extend the signing of objects with SSH keys and learn to pay attention to the key validity time range when verifying. * fs/ssh-signing-key-lifetime: ssh signing: verify ssh-keygen in test prereq ssh signing: make fmt-merge-msg consider key lifetime ssh signing: make verify-tag consider key lifetime ssh signing: make git log verify key lifetime ssh signing: make verify-commit consider key lifetime ssh signing: add key lifetime test prereqs ssh signing: use sigc struct to pass payload t/fmt-merge-msg: make gpgssh tests more specific t/fmt-merge-msg: do not redirect stderr
2021-12-21Merge branch 'jk/log-decorate-opts-with-implicit-decorate'Libravatar Junio C Hamano1-4/+19
When "git log" implicitly enabled the "decoration" processing without being explicitly asked with "--decorate" option, it failed to read and honor the settings given by the "--decorate-refs" option. * jk/log-decorate-opts-with-implicit-decorate: log: load decorations with --simplify-by-decoration log: handle --decorate-refs with userformat "%d"
2021-12-15Merge branch 'ab/die-with-bug'Libravatar Junio C Hamano1-1/+1
Code clean-up. * ab/die-with-bug: object.c: use BUG(...) no die("BUG: ...") in lookup_object_by_type() pathspec: use BUG(...) not die("BUG:%s:%d....", <file>, <line>) strbuf.h: use BUG(...) not die("BUG: ...") pack-objects: use BUG(...) not die("BUG: ...")
2021-12-15Merge branch 'es/worktree-chatty-to-stderr'Libravatar Junio C Hamano1-7/+7
"git worktree add" showed "Preparing worktree" message to the standard output stream, but when it failed, the message from die() went to the standard error stream. Depending on the order the stdio streams are flushed at the program end, this resulted in confusing output. It has been corrected by sending all the chatty messages to the standard error stream. * es/worktree-chatty-to-stderr: git-worktree.txt: add missing `-v` to synopsis for `worktree list` worktree: send "chatty" messages to stderr
2021-12-15Merge branch 'hn/reflog-tests'Libravatar Junio C Hamano1-5/+7
Prepare tests on ref API to help testing reftable backends. * hn/reflog-tests: refs/debug: trim trailing LF from reflog message test-ref-store: tweaks to for-each-reflog-ent format t1405: check for_each_reflog_ent_reverse() more thoroughly test-ref-store: don't add newline to reflog message show-branch: show reflog message
2021-12-15Merge branch 'rj/receive-pack-avoid-sigpipe-during-status-reporting'Libravatar Junio C Hamano1-0/+2
When the "git push" command is killed while the receiving end is trying to report what happened to the ref update proposals, the latter used to die, due to SIGPIPE. The code now ignores SIGPIPE to increase our chances to run the post-receive hook after it happens. * rj/receive-pack-avoid-sigpipe-during-status-reporting: receive-pack: ignore SIGPIPE while reporting status to client
2021-12-15Merge branch 'ab/run-command'Libravatar Junio C Hamano10-90/+55
API clean-up. * ab/run-command: run-command API: remove "env" member, always use "env_array" difftool: use "env_array" to simplify memory management run-command API: remove "argv" member, always use "args" run-command API users: use strvec_push(), not argv construction run-command API users: use strvec_pushl(), not argv construction run-command tests: use strvec_pushv(), not argv assignment run-command API users: use strvec_pushv(), not argv assignment upload-archive: use regular "struct child_process" pattern worktree: stop being overly intimate with run_command() internals
2021-12-15Merge branch 'en/zdiff3'Libravatar Junio C Hamano2-1/+3
"Zealous diff3" style of merge conflict presentation has been added. * en/zdiff3: update documentation for new zdiff3 conflictStyle xdiff: implement a zealous diff3, or "zdiff3"
2021-12-10Merge branch 'mp/absorb-submodule-git-dir-upon-deinit'Libravatar Junio C Hamano1-10/+11
"git submodule deinit" for a submodule whose .git metadata directory is embedded in its working tree refused to work, until the submodule gets converted to use the "absorbed" form where the metadata directory is stored in superproject, and a gitfile at the top-level of the working tree of the submodule points at it. The command is taught to convert such submodules to the absorbed form as needed. * mp/absorb-submodule-git-dir-upon-deinit: submodule: absorb git dir instead of dying on deinit
2021-12-10Merge branch 'hn/create-reflog-simplify'Libravatar Junio C Hamano1-1/+1
A small simplification of API. * hn/create-reflog-simplify: refs: drop force_create argument of create_reflog API
2021-12-10Merge branch 'vd/sparse-reset'Libravatar Junio C Hamano1-6/+107
Various operating modes of "git reset" have been made to work better with the sparse index. * vd/sparse-reset: unpack-trees: improve performance of next_cache_entry reset: make --mixed sparse-aware reset: make sparse-aware (except --mixed) reset: integrate with sparse index reset: expand test coverage for sparse checkouts sparse-index: update command for expand/collapse test reset: preserve skip-worktree bit in mixed reset reset: rename is_missing to !is_in_reset_tree
2021-12-10Merge branch 'po/size-t-for-vs'Libravatar Junio C Hamano1-1/+1
On platforms where ulong is shorter than size_t, code paths that shifted 1 or 1U to the left lacked the necessary cast to size_t, which have been corrected. * po/size-t-for-vs: object-file.c: LLP64 compatibility, upcast unity for left shift diffcore-delta.c: LLP64 compatibility, upcast unity for left shift repack.c: LLP64 compatibility, upcast unity for left shift
2021-12-10Merge branch 'ah/advice-pull-has-no-preference-between-rebase-and-merge'Libravatar Junio C Hamano1-1/+1
The advice message given by "git pull" when the user hasn't made a choice between merge and rebase still said that the merge is the default, which no longer is the case. This has been corrected. * ah/advice-pull-has-no-preference-between-rebase-and-merge: pull: don't say that merge is "the default strategy"
2021-12-10Merge branch 'ab/checkout-branch-info-leakfix'Libravatar Junio C Hamano1-31/+55
Leakfix. * ab/checkout-branch-info-leakfix: checkout: fix "branch info" memory leaks
2021-12-10Merge branch 'tw/var-default-branch'Libravatar Junio C Hamano1-0/+7
"git var GIT_DEFAULT_BRANCH" is a way to see what name is used for the newly created branch if "git init" is run. * tw/var-default-branch: var: add GIT_DEFAULT_BRANCH variable
2021-12-10Merge branch 'ja/doc-cleanup'Libravatar Junio C Hamano1-1/+1
Doc update. * ja/doc-cleanup: init doc: --shared=0xxx does not give umask but perm bits doc: git-init: clarify file modes in octal. doc: git-http-push: describe the refs as pattern pairs doc: uniformize <URL> placeholders' case doc: use three dots for indicating repetition instead of star doc: git-ls-files: express options as optional alternatives doc: use only hyphens as word separators in placeholders doc: express grammar placeholders between angle brackets doc: split placeholders as individual tokens doc: fix git credential synopsis
2021-12-09ssh signing: use sigc struct to pass payloadLibravatar Fabian Stelzer1-2/+4
To be able to extend the payload metadata with things like its creation timestamp or the creators ident we remove the payload parameters to check_signature() and use the already existing sigc->payload field instead, only adding the length field to the struct. This also allows us to get rid of the xmemdupz() calls in the verify functions. Since sigc is now used to input data as well as output the result move it to the front of the function list. - Add payload_length to struct signature_check - Populate sigc.payload/payload_len on all call sites - Remove payload parameters to check_signature() - Remove payload parameters to internal verify_* functions and use sigc instead - Remove xmemdupz() used for verbose output since payload is now already populated. Signed-off-by: Fabian Stelzer <fs@gigacodes.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-07pack-objects: use BUG(...) not die("BUG: ...")Libravatar Ævar Arnfjörð Bjarmason1-1/+1
Change this code added in da93d12b004 (pack-objects: be incredibly anal about stdio semantics, 2006-04-02) to use BUG() instead. See 1a07e59c3e2 (Update messages in preparation for i18n, 2018-07-21) for when the "BUG: " prefix was added, and [1] for background on the Solaris behavior that prompted the exhaustive error checking in this fgets() loop. 1. https://lore.kernel.org/git/824.1144007555@lotus.CS.Berkeley.EDU/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-06blame: enable and test the sparse indexLibravatar Lessley Dennington1-0/+3
Enable the sparse index for the 'git blame' command. The index was already not expanded with this command, so the most interesting thing to do is to add tests that verify that 'git blame' behaves correctly when the sparse index is enabled and that its performance improves. More specifically, these cases are: 1. The index is not expanded for 'blame' when given paths in the sparse checkout cone at multiple levels. 2. Performance measurably improves for 'blame' with sparse index when given paths in the sparse checkout cone at multiple levels. The `p2000` tests demonstrate a ~60% execution time reduction when running 'blame' for a file two levels deep and and a ~30% execution time reduction for a file three levels deep. Test before after ---------------------------------------------------------------- 2000.62: git blame f2/f4/a (full-v3) 0.31 0.32 +3.2% 2000.63: git blame f2/f4/a (full-v4) 0.29 0.31 +6.9% 2000.64: git blame f2/f4/a (sparse-v3) 0.55 0.23 -58.2% 2000.65: git blame f2/f4/a (sparse-v4) 0.57 0.23 -59.6% 2000.66: git blame f2/f4/f3/a (full-v3) 0.77 0.85 +10.4% 2000.67: git blame f2/f4/f3/a (full-v4) 0.78 0.81 +3.8% 2000.68: git blame f2/f4/f3/a (sparse-v3) 1.07 0.72 -32.7% 2000.99: git blame f2/f4/f3/a (sparse-v4) 1.05 0.73 -30.5% We do not include paths outside the sparse checkout cone because blame does not support blaming files that are not present in the working directory. This is true in both sparse and full checkouts. Signed-off-by: Lessley Dennington <lessleydennington@gmail.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-06diff: enable and test the sparse indexLibravatar Lessley Dennington1-0/+5
Enable the sparse index within the 'git diff' command. Its implementation already safely integrates with the sparse index because it shares code with the 'git status' and 'git checkout' commands that were already integrated. For more details see: d76723ee53 (status: use sparse-index throughout, 2021-07-14) 1ba5f45132 (checkout: stop expanding sparse indexes, 2021-06-29) The most interesting thing to do is to add tests that verify that 'git diff' behaves correctly when the sparse index is enabled. These cases are: 1. The index is not expanded for 'diff' and 'diff --staged' 2. 'diff' and 'diff --staged' behave the same in full checkout, sparse checkout, and sparse index repositories in the following partially-staged scenarios (i.e. the index, HEAD, and working directory differ at a given path): 1. Path is within sparse-checkout cone 2. Path is outside sparse-checkout cone 3. A merge conflict exists for paths outside sparse-checkout cone The `p2000` tests demonstrate a ~44% execution time reduction for 'git diff' and a ~86% execution time reduction for 'git diff --staged' using a sparse index: Test before after ------------------------------------------------------------- 2000.30: git diff (full-v3) 0.33 0.34 +3.0% 2000.31: git diff (full-v4) 0.33 0.35 +6.1% 2000.32: git diff (sparse-v3) 0.53 0.31 -41.5% 2000.33: git diff (sparse-v4) 0.54 0.29 -46.3% 2000.34: git diff --cached (full-v3) 0.07 0.07 +0.0% 2000.35: git diff --cached (full-v4) 0.07 0.08 +14.3% 2000.36: git diff --cached (sparse-v3) 0.28 0.04 -85.7% 2000.37: git diff --cached (sparse-v4) 0.23 0.03 -87.0% Co-authored-by: Derrick Stolee <dstolee@microsoft.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>
2021-12-04name-rev: prefer shorter names over following mergesLibravatar Elijah Newren1-4/+13
name-rev has a MERGE_TRAVERSAL_WEIGHT to say that traversing a second or later parent of a merge should be 65535 times more expensive than a first-parent traversal, as per ac076c29ae8d (name-rev: Fix non-shortest description, 2007-08-27). The point of this weight is to prefer names like v2.32.0~1471^2 over names like v2.32.0~43^2~15^2~11^2~20^2~31^2 which are two equally valid names in git.git for the same commit. Note that the first follows 1472 parent traversals compared to a mere 125 for the second. Weighting all traversals equally would clearly prefer the second name since it has fewer parent traversals, but humans aren't going to be traversing commits and they tend to have an easier time digesting names with fewer segments. The fact that the former only has two segments (~1471, ^2) makes it much simpler than the latter which has six segments (~43, ^2, ~15, etc.). Since name-rev is meant to "find symbolic names suitable for human digestion", we prefer fewer segments. However, the particular rule implemented in name-rev would actually prefer v2.33.0-rc0~11^2~1 over v2.33.0-rc0~20^2 because both have precisely one second parent traversal, and it gives the tie breaker to shortest number of total parent traversals. Fewer segments is more important for human consumption than number of hops, so we'd rather see the latter which has one fewer segment. Include the generation in is_better_name() and use a new effective_distance() calculation so that we prefer fewer segments in the printed name over fewer total parent traversals performed to get the answer. == Side-note on tie-breakers == When there are the same number of segments for two different names, we actually use the name of an ancestor commit as a tie-breaker as well. For example, for the commit cbdca289fb in the git.git repository, we prefer the name v2.33.0-rc0~112^2~1 over v2.33.0-rc0~57^2~5. This is because: * cbdca289fb is the parent of 25e65b6dd5, which implies the name for cbdca289fb should be the first parent of the preferred name for 25e65b6dd5 * 25e65b6dd5 could be named either v2.33.0-rc0~112^2 or v2.33.0-rc0~57^2~4, but the former is preferred over the latter due to fewer segments * combine the two previous facts, and the name we get for cbdca289fb is "v2.33.0-rc0~112^2~1" rather than "v2.33.0-rc0~57^2~5". Technically, we get this for free out of the implementation since we only keep track of one name for each commit as we walk history (and re-add parents to the queue if we find a better name for those parents), but the first bullet point above ensures users get results that feel more consistent. == Alternative Ideas and Meanings Discussed == One suggestion that came up during review was that shortest string-length might be easiest for users to consume. However, such a scheme would be rather computationally expensive (we'd have to track all names for each commit as we traversed the graph) and would additionally come with the possibly perplexing result that on a linear segment of history we could rapidly swap back and forth on names: MYTAG~3^2 would be preferred over MYTAG~9998 MYTAG~3^2~1 would NOT be preferred over MYTAG~9999 MYTAG~3^2~2 might be preferred over MYTAG~10000 Another item that came up was possible auxiliary semantic meanings for name-rev results either before or after this patch. The basic answer was that the previous implementation had no known useful auxiliary semantics, but that for many repositories (most in my experience), the new scheme does. In particular, the new name-rev output can often be used to answer the question, "How or when did this commit get merged?" Since that usefulness depends on how merges happen within the repository and thus isn't universally applicable, details are omitted here but you can see them at [1]. [1] https://lore.kernel.org/git/CABPp-BEeUM+3NLKDVdak90_UUeNghYCx=Dgir6=8ixvYmvyq3Q@mail.gmail.com/ Finally, it was noted that the algorithm could be improved by just explicitly tracking the number of segments and using both it and distance in the comparison, instead of giving a magic number that tries to blend the two (and which therefore might give suboptimal results in repositories with really huge numbers of commits that periodically merge older code). However, "[this patch] seems to give us a much better results than the current code, so let's take it and leave further futzing outside the scope." Signed-off-by: Elijah Newren <newren@gmail.com> Acked-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-04worktree: send "chatty" messages to stderrLibravatar Eric Sunshine1-7/+7
The order in which the stdout and stderr streams are flushed is not guaranteed to be the same across platforms or `libc` implementations. This lack of determinism can lead to anomalous and potentially confusing output if normal (stdout) output is flushed after error (stderr) output. For instance, the following output which clearly indicates a failure due to a fatal error: % git worktree add ../foo bar Preparing worktree (checking out 'bar') fatal: 'bar' is already checked out at '.../wherever' has been reported[1] on Microsoft Windows to appear as: % git worktree add ../foo bar fatal: 'bar' is already checked out at '.../wherever' Preparing worktree (checking out 'bar') which may confuse the reader into thinking that the command somehow recovered and ran to completion despite the error. This problem crops up because the "chatty" status message "Preparing worktree" is sent to stdout, whereas the "fatal" error message is sent to stderr. One way to fix this would be to flush stdout manually before git-worktree reports any errors to stderr. However, common practice in Git is for "chatty" messages to be sent to stderr. Therefore, a more appropriate fix is to adjust git-worktree to conform to that practice by sending its "chatty" messages to stderr rather than stdout as is currently the case. There may be concern that relocating messages from stdout to stderr could break existing tooling, however, these messages are already internationalized, thus are unstable. And, indeed, the "Preparing worktree" message has already been the subject of somewhat significant changes in 2c27002a0a (worktree: improve message when creating a new worktree, 2018-04-24). Moreover, there is existing precedent, such as 68b939b2f0 (clone: send diagnostic messages to stderr, 2013-09-18) which likewise relocated "chatty" messages from stdout to stderr for git-clone. [1]: https://lore.kernel.org/git/CA+34VNLj6VB1kCkA=MfM7TZR+6HgqNi5-UaziAoCXacSVkch4A@mail.gmail.com/T/ Reported-by: Baruch Burstein <bmburstein@gmail.com> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-02show-branch: show reflog messageLibravatar Han-Wen Nienhuys1-5/+7
Before, --reflog option would look for '\t' in the reflog message. As refs.c already parses the reflog line, the '\t' was never found, and show-branch --reflog would always say "(none)" as reflog message Add test. Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-01log: load decorations with --simplify-by-decorationLibravatar Jeff King1-2/+3
It's possible to specify --simplify-by-decoration but not --decorate. In this case we do respect the simplification, but we don't actually show any decorations. However, it works by lazy-loading the decorations when needed; this is discussed in more detail in 0cc7380d88 (log-tree: call load_ref_decorations() in get_name_decoration(), 2019-09-08). This works for basic cases, but will fail to respect any --decorate-refs option (or its variants). Those are handled only when cmd_log_init() loads the ref decorations up front, which is only when --decorate is specified explicitly (or as of the previous commit, when the userformat asks for %d or similar). We can solve this by making sure to load the decorations if we're going to simplify using them but they're not otherwise going to be displayed. The new test shows a simple case that fails without this patch. Note that we expect two commits in the output: the one we asked for by --decorate-refs, and the initial commit. The latter is just a quirk of how --simplify-by-decoration works. Arguably it may be a bug, but it's unrelated to this patch (which is just about the loading of the decorations; you get the same behavior before this patch with an explicit --decorate). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-01log: handle --decorate-refs with userformat "%d"Libravatar Jeff King1-2/+16
In order to show ref decorations, we first have to load them. If you run: git log --decorate then git-log will recognize the option and load them up front via cmd_log_init(). Likewise if log.decorate is set. If you don't say --decorate explicitly, but do mention "%d" or "%D" in the output format, like so: git log --format=%d then this also works, because we lazy-load the ref decorations. This has been true since 3b3d443feb (add '%d' pretty format specifier to show decoration, 2008-09-04), though the lazy-load was later moved into log-tree.c. But there's one problem: that lazy-load just uses the defaults; it doesn't take into account any --decorate-refs options (or its exclude variant, or their config). So this does not work: git log --decorate-refs=whatever --format=%d It will decorate using all refs, not just the specified ones. This has been true since --decorate-refs was added in 65516f586b (log: add option to choose which refs to decorate, 2017-11-21). Adding further confusion is that it _may_ work because of the auto-decoration feature. If that's in use (and it often is, as it's the default), then if the output is going to stdout, we do enable decorations early (and so load them up front, respecting the extra options). But otherwise we do not. So: git log --decorate-refs=whatever --format=%d >some-file would typically behave differently than it does when the output goes to the pager or terminal! The solution is simple: we should recognize in cmd_log_init() that we're going to show decorations, and make sure we load them there. We already check userformat_find_requirements(), so we can couple this with our existing code there. There are two new tests. The first shows off the actual fix. The second makes sure that our fix doesn't cause us to stomp on an existing --decorate option (see the new comment in the code, as well). Reported-by: Josh Rampersad <josh.rampersad@voiceflow.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-01receive-pack: protect current branch for bare repository worktreeLibravatar Anders Kaseorg1-5/+3
A bare repository won’t have a working tree at "..", but it may still have separate working trees created with git worktree. We should protect the current branch of such working trees from being updated or deleted, according to receive.denyCurrentBranch. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-01receive-pack: clean dead code from update_worktree()Libravatar Anders Kaseorg1-16/+7
update_worktree() can only be called with a non-NULL worktree parameter, because that’s the only case where we set do_update_worktree = 1. worktree->path is always initialized to non-NULL. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-01fetch: protect branches checked out in all worktreesLibravatar Anders Kaseorg1-35/+40
Refuse to fetch into the currently checked out branch of any working tree, not just the current one. Fixes this previously reported bug: https://lore.kernel.org/git/cb957174-5e9a-5603-ea9e-ac9b58a2eaad@mathema.de/ As a side effect of using find_shared_symref, we’ll also refuse the fetch when we’re on a detached HEAD because we’re rebasing or bisecting on the branch in question. This seems like a sensible change. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-01worktree: simplify find_shared_symref() memory ownership modelLibravatar Anders Kaseorg3-24/+52
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>
2021-12-01receive-pack: lowercase error messagesLibravatar Anders Kaseorg1-5/+5
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>
2021-12-01fetch: lowercase error messagesLibravatar Anders Kaseorg1-24/+26
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>
2021-12-01repack.c: LLP64 compatibility, upcast unity for left shiftLibravatar Philip Oakley1-1/+1
Visual Studio reports C4334 "was 64-bit shift intended" warning because of size mismatch. Promote unity to the matching type to fit with the `&` operator. Signed-off-by: Philip Oakley <philipoakley@iee.email> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-01update documentation for new zdiff3 conflictStyleLibravatar Elijah Newren1-1/+1
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-01xdiff: implement a zealous diff3, or "zdiff3"Libravatar Phillip Wood1-0/+2
"zdiff3" is identical to ordinary diff3 except that it allows compaction of common lines on the two sides of history at the beginning or end of the conflict hunk. For example, the following diff3 conflict: 1 2 3 4 <<<<<< A B C D E |||||| 5 6 ====== A X C Y E >>>>>> 7 8 9 has common lines 'A', 'C', and 'E' on the two sides. With zdiff3, one would instead get the following conflict: 1 2 3 4 A <<<<<< B C D |||||| 5 6 ====== X C Y >>>>>> E 7 8 9 Note that the common lines, 'A', and 'E' were moved outside the conflict. Unlike with the two-way conflicts from the 'merge' conflictStyle, the zdiff3 conflict is NOT split into multiple conflict regions to allow the common 'C' lines to be shown outside a conflict, because zdiff3 shows the base version too and the base version cannot be reasonably split. Note also that the removing of lines common to the two sides might make the remaining text inside the conflict region match the base text inside the conflict region (for example, if the diff3 conflict had '5 6 E' on the right side of the conflict, then the common line 'E' would be moved outside and both the base and right side's remaining conflict text would be the lines '5' and '6'). This has the potential to surprise users and make them think there should not have been a conflict, but there definitely was a conflict and it should remain. Based-on-patch-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Co-authored-by: Elijah Newren <newren@gmail.com> Signed-off-by: Phillip Wood <phillip.wood123@gmail.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-11-29Merge branch 'tb/plug-pack-bitmap-leaks'Libravatar Junio C Hamano3-5/+14
Leakfix. * tb/plug-pack-bitmap-leaks: pack-bitmap.c: more aggressively free in free_bitmap_index() pack-bitmap.c: don't leak type-level bitmaps midx.c: write MIDX filenames to strbuf builtin/multi-pack-index.c: don't leak concatenated options builtin/repack.c: avoid leaking child arguments builtin/pack-objects.c: don't leak memory via arguments t/helper/test-read-midx.c: free MIDX within read_midx_file() midx.c: don't leak MIDX from verify_midx_file midx.c: clean up chunkfile after reading the MIDX
2021-11-29Merge branch 'jc/fix-ref-sorting-parse'Libravatar Junio C Hamano4-23/+24
Things like "git -c branch.sort=bogus branch new HEAD", i.e. the operation modes of the "git branch" command that do not need the sort key information, no longer errors out by seeing a bogus sort key. * jc/fix-ref-sorting-parse: for-each-ref: delay parsing of --sort=<atom> options
2021-11-29Merge branch 'so/stash-staged'Libravatar Junio C Hamano1-9/+71
"git stash" learned the "--staged" option to stash away what has been added to the index (and nothing else). * so/stash-staged: stash: get rid of unused argument in stash_staged() stash: implement '--staged' option for 'push' and 'save'
2021-11-29Merge branch 'vd/sparse-reset' into ld/sparse-diff-blameLibravatar Junio C Hamano1-6/+107
* vd/sparse-reset: unpack-trees: improve performance of next_cache_entry reset: make --mixed sparse-aware reset: make sparse-aware (except --mixed) reset: integrate with sparse index reset: expand test coverage for sparse checkouts sparse-index: update command for expand/collapse test reset: preserve skip-worktree bit in mixed reset reset: rename is_missing to !is_in_reset_tree
2021-11-29reset: make --mixed sparse-awareLibravatar Victoria Dye1-2/+85
Remove the `ensure_full_index` guard on `read_from_tree` and update `git reset --mixed` to ensure it can use sparse directory index entries wherever possible. Sparse directory entries are reset using `diff_tree_oid`, which requires `change` and `add_remove` functions to process the internal contents of the sparse directory. The `recursive` diff option handles cases in which `reset --mixed` must diff/merge files that are nested multiple levels deep in a sparse directory. The use of pathspecs with `git reset --mixed` introduces scenarios in which internal contents of sparse directories may be matched by the pathspec. In order to reset *all* files in the repo that may match the pathspec, the following conditions on the pathspec require index expansion before performing the reset: * "magic" pathspecs * wildcard pathspecs that do not match only in-cone files or entire sparse directories * literal pathspecs matching something outside the sparse checkout definition Helped-by: Elijah Newren <newren@gmail.com> Signed-off-by: Victoria Dye <vdye@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-11-29reset: integrate with sparse indexLibravatar Victoria Dye1-3/+7
Disable `command_requires_full_index` repo setting and add `ensure_full_index` guards around code paths that cannot yet use sparse directory index entries. `reset --soft` does not modify the index, so no compatibility changes are needed for it to function without expanding the index. For all other reset modes (`--mixed`, `--hard`, `--keep`, `--merge`), the full index is expanded to prevent cache tree corruption and invalid variable accesses. Additionally, the `read_cache()` check verifying an uncorrupted index is moved after argument parsing and preparing the repo settings. The index is not used by the preceding argument handling, but `read_cache()` must be run *after* enabling sparse index for the command (so that the index is not expanded unnecessarily) and *before* using the index for reset (so that it is verified as uncorrupted). Signed-off-by: Victoria Dye <vdye@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>