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2020-08-24Merge branch 'dl/subtree-docs'Libravatar Junio C Hamano1-3/+3
Doc updates for subtree (in contrib/) * dl/subtree-docs: contrib/subtree: document 'push' does not take '--squash' contrib/subtree: fix "unsure" for --message in the document
2020-08-24Merge branch 'mt/checkout-entry-dead-code-removal'Libravatar Junio C Hamano1-2/+0
Code clean-up. * mt/checkout-entry-dead-code-removal: checkout_entry(): remove unreachable error() call
2020-08-24Merge branch 'jc/no-update-fetch-head'Libravatar Junio C Hamano4-5/+41
"git fetch" learned --no-write-fetch-head option to avoid writing the FETCH_HEAD file. * jc/no-update-fetch-head: fetch: optionally allow disabling FETCH_HEAD update
2020-08-24Merge branch 'ma/doc-sha-256-is-experimental'Libravatar Junio C Hamano5-1/+14
The recent addition of SHA-256 support is marked as experimental in the documentation. * ma/doc-sha-256-is-experimental: Documentation: mark `--object-format=sha256` as experimental
2020-08-24Merge branch 'rs/more-buffered-io'Libravatar Junio C Hamano3-25/+26
Use more buffered I/O where we used to call many small write(2)s. * rs/more-buffered-io: upload-pack: use buffered I/O to talk to rev-list midx: use buffered I/O to talk to pack-objects connected: use buffered I/O to talk to rev-list
2020-08-24Merge branch 'jk/unleak-fixes'Libravatar Junio C Hamano3-14/+6
Fix some incorrect UNLEAK() annotations. * jk/unleak-fixes: ls-remote: simplify UNLEAK() usage stop calling UNLEAK() before die()
2020-08-24Merge branch 'en/dir-nonbare-embedded'Libravatar Junio C Hamano2-7/+26
"ls-files -o" mishandled the top-level directory of another git working tree that hangs in the current git working tree. * en/dir-nonbare-embedded: dir: avoid prematurely marking nonbare repositories as matches t3000: fix some test description typos
2020-08-24Merge branch 'ds/midx-repack-to-batch-size'Libravatar Junio C Hamano3-6/+25
The "--batch-size" option of "git multi-pack-index repack" command is now used to specify that very small packfiles are collected into one until the total size roughly exceeds it. * ds/midx-repack-to-batch-size: multi-pack-index: repack batches below --batch-size
2020-08-24Merge branch 'es/init-no-separate-git-dir-in-bare'Libravatar Junio C Hamano2-0/+18
The purpose of "git init --separate-git-dir" is to initialize a new project with the repository separate from the working tree, or, in the case of an existing project, to move the repository (the .git/ directory) out of the working tree. It does not make sense to use --separate-git-dir with a bare repository for which there is no working tree, so disallow its use with bare repositories. * es/init-no-separate-git-dir-in-bare: init: disallow --separate-git-dir with bare repository
2020-08-19Ninth batchLibravatar Junio C Hamano1-1/+43
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-19Merge branch 'jh/mingw-unlink'Libravatar Junio C Hamano1-0/+3
"unlink" emulation on MinGW has been optimized. * jh/mingw-unlink: mingw: improve performance of mingw_unlink()
2020-08-19Merge branch 'ds/sha256-leftover-bits'Libravatar Junio C Hamano10-21/+146
midx and commit-graph files now use the byte defined in their file format specification for identifying the hash function used for object names. * ds/sha256-leftover-bits: multi-pack-index: use hash version byte commit-graph: use the "hash version" byte t/README: document GIT_TEST_DEFAULT_HASH
2020-08-19Merge branch 'ma/sha-256-docs'Libravatar Junio C Hamano4-23/+30
Further update of docs to adjust to the recent SHA-256 work. * ma/sha-256-docs: shallow.txt: document SHA-256 shallow format protocol-capabilities.txt: clarify "allow-x-sha1-in-want" re SHA-256 index-format.txt: document SHA-256 index format http-protocol.txt: document SHA-256 "want"/"have" format
2020-08-19Merge branch 'jc/object-names-are-not-sha-1'Libravatar Junio C Hamano5-5/+5
A few end-user facing messages have been updated to be hash-algorithm agnostic. * jc/object-names-are-not-sha-1: messages: avoid SHA-1 in end-user facing messages
2020-08-19Merge branch 'bc/sha-256-doc-updates'Libravatar Junio C Hamano2-16/+22
Further update of docs to adjust to the recent SHA-256 work. * bc/sha-256-doc-updates: docs: fix step in transition plan docs: document SHA-256 pack and indices
2020-08-19Merge branch 'pb/set-url-docfix'Libravatar Junio C Hamano1-1/+1
Doc fix. * pb/set-url-docfix: fetch, pull doc: correct description of '--set-upstream'
2020-08-19Merge branch 'pb/userdiff-fortran-update'Libravatar Junio C Hamano11-1/+100
The regexp to identify the function boundary for FORTRAN programs has been updated. * pb/userdiff-fortran-update: userdiff: improve Fortran xfuncname regex userdiff: add tests for Fortran xfuncname regex
2020-08-19Merge branch 'jb/commit-graph-doc-fix'Libravatar Junio C Hamano1-3/+3
Docfix. * jb/commit-graph-doc-fix: docs: commit-graph: fix some whitespace in the diagram
2020-08-19Merge branch 'jk/blame-coalesce-fix'Libravatar Junio C Hamano2-9/+20
When given more than one target line ranges, "git blame -La,b -Lc,d" was over-eager to coalesce groups of original lines and showed incorrect results, which has been corrected. * jk/blame-coalesce-fix: blame: only coalesce lines that are adjacent in result t8003: factor setup out of coalesce test t8003: check output of coalesced blame
2020-08-19Merge branch 'ak/sequencer-fix-find-uniq-abbrev'Libravatar Junio C Hamano2-2/+9
Ring buffer with size 4 used for bin-hex translation resulted in a wrong object name in the sequencer's todo output, which has been corrected. * ak/sequencer-fix-find-uniq-abbrev: rebase -i: fix possibly wrong onto hash in todo
2020-08-19Merge branch 'en/sequencer-merge-labels'Libravatar Junio C Hamano3-12/+12
The commit labels used to explain each side of conflicted hunks placed by the sequencer machinery have been made more readable by humans. * en/sequencer-merge-labels: sequencer: avoid garbled merge machinery messages due to commit labels
2020-08-19Merge branch 'rs/preserve-merges-unused-code-removal'Libravatar Junio C Hamano1-10/+0
Code clean-up. * rs/preserve-merges-unused-code-removal: rebase: remove unused function reschedule_last_action
2020-08-19Merge branch 'rs/upload-pack-sigchain-fix'Libravatar Junio C Hamano1-1/+0
Code clean-up. * rs/upload-pack-sigchain-fix: upload-pack: remove superfluous sigchain_pop() call
2020-08-19Merge branch 'rp/ita-diff-modefix'Libravatar Junio C Hamano1-1/+2
"git diff [<tree-ish>] $path" for a $path that is marked with i-t-a bit was not showing the mode bits from the working tree. * rp/ita-diff-modefix: diff-lib: use worktree mode in diffs from i-t-a entries
2020-08-19Merge branch 'en/merge-tests'Libravatar Junio C Hamano35-48/+71
Updates to "git merge" tests, in preparation for a new merge strategy backend. * en/merge-tests: t6425: be more flexible with rename/delete conflict messages t642[23]: be more flexible for add/add conflicts involving pair renames t6422, t6426: be more flexible for add/add conflicts involving renames t6423: add an explanation about why one of the tests does not pass t6416, t6423: clarify some comments and fix some typos t6422: fix multiple errors with the mod6 test expectations t6423: fix test setup for a couple tests t6416, t6422: fix incorrect untracked file count t6422: fix bad check against missing file t6418: tighten delete/normalize conflict testcase Collect merge-related tests to t64xx
2020-08-18checkout_entry(): remove unreachable error() callLibravatar Matheus Tavares1-2/+0
This if statement never evaluates to true since we already check state->force a few lines above, and immediately return when it is false. Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-18fetch: optionally allow disabling FETCH_HEAD updateLibravatar Junio C Hamano4-5/+41
If you run fetch but record the result in remote-tracking branches, and either if you do nothing with the fetched refs (e.g. you are merely mirroring) or if you always work from the remote-tracking refs (e.g. you fetch and then merge origin/branchname separately), you can get away with having no FETCH_HEAD at all. Teach "git fetch" a command line option "--[no-]write-fetch-head". The default is to write FETCH_HEAD, and the option is primarily meant to be used with the "--no-" prefix to override this default, because there is no matching fetch.writeFetchHEAD configuration variable to flip the default to off (in which case, the positive form may become necessary to defeat it). Note that under "--dry-run" mode, FETCH_HEAD is never written; otherwise you'd see list of objects in the file that you do not actually have. Passing `--write-fetch-head` does not force `git fetch` to write the file. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-18contrib/subtree: document 'push' does not take '--squash'Libravatar Danny Lin1-2/+2
git subtree push does not support --squash, as previously illustrated in 6ccc71a9 (contrib/subtree: there's no push --squash, 2015-05-07) Signed-off-by: Danny Lin <danny0838@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-18contrib/subtree: fix "unsure" for --message in the documentLibravatar Danny Lin1-1/+1
Revise the documentation and remove previous "unsure" after making sure that --message supports only 'add', 'merge', 'pull', and 'split --rejoin'. Signed-off-by: Danny Lin <danny0838@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17Eighth batchLibravatar Junio C Hamano1-0/+36
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17Merge branch 'so/log-diff-merges-opt'Libravatar Junio C Hamano5-2/+171
Earlier, to countermand the implicit "-m" option when the "--first-parent" option is used with "git log", we added the "--[no-]diff-merges" option in the jk/log-fp-implies-m topic. To leave the door open to allow the "--diff-merges" option to take values that instructs how patches for merge commits should be computed (e.g. "cc"? "-p against first parent?"), redefine "--diff-merges" to take non-optional value, and implement "off" that means the same thing as "--no-diff-merges". * so/log-diff-merges-opt: t/t4013: add test for --diff-merges=off doc/git-log: describe --diff-merges=off revision: change "--diff-merges" option to require parameter
2020-08-17Merge branch 'jk/log-fp-implies-m'Libravatar Junio C Hamano9-55/+158
"git log --first-parent -p" showed patches only for single-parent commits on the first-parent chain; the "--first-parent" option has been made to imply "-m". Use "--no-diff-merges" to restore the previous behaviour to omit patches for merge commits. * jk/log-fp-implies-m: doc/git-log: clarify handling of merge commit diffs doc/git-log: move "-t" into diff-options list doc/git-log: drop "-r" diff option doc/git-log: move "Diff Formatting" from rev-list-options log: enable "-m" automatically with "--first-parent" revision: add "--no-diff-merges" option to counteract "-m" log: drop "--cc implies -m" logic
2020-08-17Merge branch 'ma/stop-progress-null-fix'Libravatar Junio C Hamano1-2/+10
NULL dereference fix. * ma/stop-progress-null-fix: progress: don't dereference before checking for NULL
2020-08-17Merge branch 'es/test-cmp-typocatcher'Libravatar Junio C Hamano1-2/+14
Test framework update. * es/test-cmp-typocatcher: test_cmp: diagnose incorrect arguments
2020-08-17Merge branch 'rp/apply-cached-with-i-t-a'Libravatar Junio C Hamano2-4/+77
Recent versions of "git diff-files" shows a diff between the index and the working tree for "intent-to-add" paths as a "new file" patch; "git apply --cached" should be able to take "git diff-files" and should act as an equivalent to "git add" for the path, but the command failed to do so for such a path. * rp/apply-cached-with-i-t-a: t4140: test apply with i-t-a paths apply: make i-t-a entries never match worktree apply: allow "new file" patches on i-t-a entries
2020-08-17Merge branch 'al/bisect-first-parent'Libravatar Junio C Hamano11-103/+195
"git bisect" learns the "--first-parent" option to find the first breakage along the first-parent chain. * al/bisect-first-parent: bisect: combine args passed to find_bisection() bisect: introduce first-parent flag cmd_bisect__helper: defer parsing no-checkout flag rev-list: allow bisect and first-parent flags t6030: modernize "git bisect run" tests
2020-08-17Merge branch 'jk/sideband-error-l10n'Libravatar Junio C Hamano1-1/+1
Mark error message for i18n. * jk/sideband-error-l10n: sideband: mark "remote error:" prefix for translation
2020-08-17Merge branch 'jc/noop-with-static-inline'Libravatar Junio C Hamano1-5/+15
A no-op replacement function implemented as a C preprocessor macro does not perform as good a job as one implemented as a "static inline" function in catching errors in parameters; replace the former with the latter in <git-compat-util.h> header. * jc/noop-with-static-inline: compat-util: type-check parameters of no-op replacement functions
2020-08-17Merge branch 'pd/mergetool-nvimdiff'Libravatar Junio C Hamano9-18/+51
The existing backends for "git mergetool" based on variants of vim have been refactored and then support for "nvim" has been added. * pd/mergetool-nvimdiff: mergetools: add support for nvimdiff (neovim) family mergetool--lib: improve support for vimdiff-style tool variants
2020-08-17Merge branch 'hn/reftable-prep-part-2'Libravatar Junio C Hamano4-139/+36
Further preliminary change to refs API. * hn/reftable-prep-part-2: Make HEAD a PSEUDOREF rather than PER_WORKTREE. Modify pseudo refs through ref backend storage t1400: use git rev-parse for testing PSEUDOREF existence
2020-08-17Merge branch 'dd/send-email-config'Libravatar Junio C Hamano4-0/+68
Stop when "sendmail.*" configuration variables are defined, which could be a mistaken attempt to define "sendemail.*" variables. * dd/send-email-config: git-send-email: die if sendmail.* config is set
2020-08-17Merge branch 'ps/ref-transaction-hook'Libravatar Junio C Hamano2-1/+28
The logic to find the ref transaction hook script attempted to cache the path to the found hook without realizing that it needed to keep a copied value, as the API it used returned a transitory buffer space. This has been corrected. * ps/ref-transaction-hook: t1416: avoid hard-coded sha1 ids refs: fix interleaving hook calls with reference-transaction hook
2020-08-17multi-pack-index: use hash version byteLibravatar Derrick Stolee4-13/+80
Similar to the commit-graph format, the multi-pack-index format has a byte in the header intended to track the hash version used to write the file. This allows one to interpret the hash length without having the context of the repository config specifying the hash length. This was not modified as part of the SHA-256 work because the hash length was automatically up-shifted due to that config. Since we have this byte available, we can make the file formats more obviously incompatible instead of relying on other context from the repository. Add a new oid_version() method in midx.c similar to the one in commit-graph.c. This is specifically made separate from that implementation to avoid artificially linking the formats. The test impact requires a few more things than the corresponding change in the commit-graph format. Specifically, 'test-tool read-midx' was not writing anything about this header value to output. Since the value available in 'struct multi_pack_index' is hash_len instead of a version value, we output "20" or "32" instead of "1" or "2". Since we want a user to not have their Git commands fail if their multi-pack-index has the incorrect hash version compared to the repository's hash version, we relax the die() to an error() in load_multi_pack_index(). This has some effect on 'git multi-pack-index verify' as we need to check that a failed parse of a file that exists is actually a verify error. For that test that checks the hash version matches, we change the corrupted byte from "2" to "3" to ensure the test fails for both hash algorithms. Helped-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17commit-graph: use the "hash version" byteLibravatar Derrick Stolee5-8/+62
The commit-graph format reserved a byte among the header of the file to store a "hash version". During the SHA-256 work, this was not modified because file formats are not necessarily intended to work across hash versions. If a repository has SHA-256 as its hash algorithm, it automatically up-shifts the lengths of object names in all necessary formats. However, since we have this byte available for adjusting the version, we can make the file formats more obviously incompatible instead of relying on other context from the repository. Update the oid_version() method in commit-graph.c to add a new value, 2, for sha-256. This automatically writes the new value in a SHA-256 repository _and_ verifies the value is correct. This is a breaking change relative to the current 'master' branch since 092b677 (Merge branch 'bc/sha-256-cvs-svn-updates', 2020-08-13) but it is not breaking relative to any released version of Git. The test impact is relatively minor: the output of 'test-tool read-graph' lists the header information, so those instances of '1' need to be replaced with a variable determined by GIT_TEST_DEFAULT_HASH. A more careful test is added that specifically creates a repository of each type then swaps the commit-graph files. The important value here is that the "git log" command succeeds while writing a message to stderr. Helped-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17t/README: document GIT_TEST_DEFAULT_HASHLibravatar Derrick Stolee1-0/+4
Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17mingw: improve performance of mingw_unlink()Libravatar Jeff Hostetler1-0/+3
Update mingw_unlink() to first try to delete the file with existing permissions before trying to force it. Windows throws an error when trying to delete a read-only file. The mingw_unlink() compatibility wrapper always tries to _wchmod(666) the file before calling _wunlink() to avoid that error. However, since most files in the worktree are already writable, this is usually wasted effort. Update mingw_unlink() to just call DeleteFileW() directly and if that succeeds return. If that fails, fall back into the existing code path to update the permissions and use _wunlink() to get the existing error code mapping. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17Documentation: mark `--object-format=sha256` as experimentalLibravatar Martin Ågren5-1/+14
After eff45daab8 ("repository: enable SHA-256 support by default", 2020-07-29), vanilla builds of Git enable the user to run, e.g., git init --object-format=sha256 and hack away. This can be a good way to gain experience with the SHA-256 world, e.g., to find bugs that GIT_TEST_DEFAULT_HASH=sha256 make test doesn't spot. But it really is a separate world: Such SHA-256 repos will live entirely separate from the (by now fairly large) set of SHA-1 repos. Interacting across the border is possible in principle, e.g., through "diff + apply" (or "format-patch + am"), but even that has its limitations: Applying a SHA-256 diff in a SHA-1 repo works in the simple case, but if you need to resort to `-3`, you're out of luck. Similarly, "push + pull" should work, but you really will be operating mostly offset from the rest of the world. That might be ok by the time you initialize your repository, and it might be ok for several months after that, but there might come a day when you're starting to regret your use of `git init --object-format=sha256` and have dug yourself into a fairly deep hole. There are currently topics in flight to document our data formats and protocols regarding SHA-256 and in some cases (midx and commit-graph), we're considering adjusting how the file formats indicate which object format to use. Wherever `--object-format` is mentioned in our documentation, let's make it clear that using it with "sha256" is experimental. If we later need to explain why we can't handle data we generated back in 2020, we can always point to this paragraph we're adding here. By "include::"-ing a small blurb, we should be able to be consistent throughout the documentation and can eventually gradually tone down the severity of this text. One day, we might even use it to start phasing out `--object-format=sha1`, but let's not get ahead of ourselves... There's also `extensions.objectFormat`, but it's only mentioned three times. Twice where we're adding this new disclaimer and in the third spot we already have a "do not edit" warning. From there, interested readers should eventually find this new one that we're adding here. Because `GIT_DEFAULT_HASH` provides another entry point to this functionality, document the experimental nature of it too. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17shallow.txt: document SHA-256 shallow formatLibravatar Martin Ågren1-1/+1
Similar to recent commits, document that we list object names rather than SHA-1s. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17protocol-capabilities.txt: clarify "allow-x-sha1-in-want" re SHA-256Libravatar Martin Ågren1-4/+8
Two of our capabilities contain "sha1" in their names, but that's historical. Clarify that object names are still to be given using whatever object format has been negotiated using the "object-format" capability. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17index-format.txt: document SHA-256 index formatLibravatar Martin Ågren1-16/+18
Document that in SHA-1 repositories, we use SHA-1 and in SHA-256 repositories, we use SHA-256, then replace all other uses of "SHA-1" with something more neutral. Avoid referring to "160-bit" hash values. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>