| Git 2.29 Release Notes |
| ====================== |
| |
| Updates since v2.28 |
| ------------------- |
| |
| UI, Workflows & Features |
| |
| * "git help log" has been enhanced by sharing more material from the |
| documentation for the underlying "git rev-list" command. |
| |
| * "git for-each-ref --format=<>" learned %(contents:size). |
| |
| * "git merge" learned to selectively omit " into <branch>" at the end |
| of the title of default merge message with merge.suppressDest |
| configuration. |
| |
| * The component to respond to "git fetch" request is made more |
| configurable to selectively allow or reject object filtering |
| specification used for partial cloning. |
| |
| * Stop when "sendmail.*" configuration variables are defined, which |
| could be a mistaken attempt to define "sendemail.*" variables. |
| |
| * The existing backends for "git mergetool" based on variants of vim |
| have been refactored and then support for "nvim" has been added. |
| |
| * "git bisect" learns the "--first-parent" option to find the first |
| breakage along the first-parent chain. |
| |
| * "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. |
| |
| * The commit labels used to explain each side of conflicted hunks |
| placed by the sequencer machinery have been made more readable by |
| humans. |
| |
| * 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. |
| |
| * The recent addition of SHA-256 support is marked as experimental in |
| the documentation. |
| |
| * "git fetch" learned --no-write-fetch-head option to avoid writing |
| the FETCH_HEAD file. |
| |
| * Command line completion (in contrib/) usually omits redundant, |
| deprecated and/or dangerous options from its output; it learned to |
| optionally include all of them. |
| |
| * The output from the "diff" family of the commands had abbreviated |
| object names of blobs involved in the patch, but its length was not |
| affected by the --abbrev option. Now it is. |
| |
| * "git worktree" gained a "repair" subcommand to help users recover |
| after moving the worktrees or repository manually without telling |
| Git. Also, "git init --separate-git-dir" no longer corrupts |
| administrative data related to linked worktrees. |
| |
| * The "--format=" option to the "for-each-ref" command and friends |
| learned a few more tricks, e.g. the ":short" suffix that applies to |
| "objectname" now also can be used for "parent", "tree", etc. |
| |
| * "git worktree add" learns that the "-d" is a synonym to "--detach" |
| option to create a new worktree without being on a branch. |
| |
| * "format-patch --range-diff=<prev> <origin>..HEAD" has been taught |
| not to ignore <origin> when <prev> is a single version. |
| |
| * "add -p" now allows editing paths that were only added in intent. |
| |
| * The 'meld' backend of the "git mergetool" learned to give the |
| underlying 'meld' the '--auto-merge' option, which would help |
| reduce the amount of text that requires manual merging. |
| |
| * "git for-each-ref" and friends that list refs used to allow only |
| one --merged or --no-merged to filter them; they learned to take |
| combination of both kind of filtering. |
| |
| * "git maintenance", a "git gc"'s big brother, has been introduced to |
| take care of more repository maintenance tasks, not limited to the |
| object database cleaning. |
| |
| * "git receive-pack" that accepts requests by "git push" learned to |
| outsource most of the ref updates to the new "proc-receive" hook. |
| |
| * "git push" that wants to be atomic and wants to send push |
| certificate learned not to prepare and sign the push certificate |
| when it fails the local check (hence due to atomicity it is known |
| that no certificate is needed). |
| |
| * "git commit-graph write" learned to limit the number of bloom |
| filters that are computed from scratch with the --max-new-filters |
| option. |
| |
| * The transport protocol v2 has become the default again. |
| |
| * The installation procedure learned to optionally omit "git-foo" |
| executable files for each 'foo' built-in subcommand, which are only |
| required by old timers that still rely on the age old promise that |
| prepending "git --exec-path" output to PATH early in their script |
| will keep the "git-foo" calls they wrote working. |
| |
| * The command line completion (in contrib/) learned that "git restore |
| -s <TAB>" is often followed by a refname. |
| |
| * "git shortlog" has been taught to group commits by the contents of |
| the trailer lines, like "Reviewed-by:", "Coauthored-by:", etc. |
| |
| * "git archive" learns the "--add-file" option to include untracked |
| files into a snapshot from a tree-ish. |
| |
| * "git fetch" and "git push" support negative refspecs. |
| |
| * "git format-patch" learns to take "whenAble" as a possible value |
| for the format.useAutoBase configuration variable to become no-op |
| when the automatically computed base does not make sense. |
| |
| * Credential helpers are now allowed to terminate lines with CRLF |
| line ending, as well as LF line ending. |
| |
| |
| Performance, Internal Implementation, Development Support etc. |
| |
| * The changed-path Bloom filter is improved using ideas from an |
| independent implementation. |
| |
| * Updates to the changed-paths bloom filter. |
| |
| * The test framework has been updated so that most tests will run |
| with predictable (artificial) timestamps. |
| |
| * Preliminary clean-up of the refs API in preparation for adding a |
| new refs backend "reftable". |
| |
| * Dev support to limit the use of test_must_fail to only git commands. |
| |
| * While packing many objects in a repository with a promissor remote, |
| lazily fetching missing objects from the promissor remote one by |
| one may be inefficient---the code now attempts to fetch all the |
| missing objects in batch (obviously this won't work for a lazy |
| clone that lazily fetches tree objects as you cannot even enumerate |
| what blobs are missing until you learn which trees are missing). |
| |
| * The pretend-object mechanism checks if the given object already |
| exists in the object store before deciding to keep the data |
| in-core, but the check would have triggered lazy fetching of such |
| an object from a promissor remote. |
| |
| * The argv_array API is useful for not just managing argv but any |
| "vector" (NULL-terminated array) of strings, and has seen adoption |
| to a certain degree. It has been renamed to "strvec" to reduce the |
| barrier to adoption. |
| |
| * The final leg of SHA-256 transition plus doc updates. Note that |
| there is no interoperability between SHA-1 and SHA-256 |
| repositories yet. |
| |
| * CMake support to build with MSVC for Windows bypassing the Makefile. |
| |
| * A new helper function has_object() has been introduced to make it |
| easier to mark object existence checks that do and don't want to |
| trigger lazy fetches, and a few such checks are converted using it. |
| |
| * 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. |
| |
| * Test framework update. |
| (merge d572f52a64 es/test-cmp-typocatcher later to maint). |
| |
| * Updates to "git merge" tests, in preparation for a new merge |
| strategy backend. |
| |
| * midx and commit-graph files now use the byte defined in their file |
| format specification for identifying the hash function used for |
| object names. |
| |
| * The FETCH_HEAD is now always read from the filesystem regardless of |
| the ref backend in use, as its format is much richer than the |
| normal refs, and written directly by "git fetch" as a plain file.. |
| |
| * An unused binary has been discarded, and and a bunch of commands |
| have been turned into into built-in. |
| |
| * A handful of places in in-tree code still relied on being able to |
| execute the git subcommands, especially built-ins, in "git-foo" |
| form, which have been corrected. |
| |
| * When a packfile is removed by "git repack", multi-pack-index gets |
| cleared; the code was taught to do so less aggressively by first |
| checking if the midx actually refers to a pack that no longer |
| exists. |
| |
| * Internal API clean-up to handle two options "diff-index" and "log" |
| have, which happen to share the same short form, more sensibly. |
| |
| * The "add -i/-p" machinery has been written in C but it is not used |
| by default yet. It is made default to those who are participating |
| in feature.experimental experiment. |
| |
| * Allow maintainers to tweak $(TAR) invocations done while making |
| distribution tarballs. |
| |
| * "git index-pack" learned to resolve deltified objects with greater |
| parallelism. |
| |
| * "diff-highlight" (in contrib/) had a logic to flush its output upon |
| seeing a blank line but the way it detected a blank line was broken. |
| |
| * The logic to skip testing on the tagged commit and the tag itself |
| was not quite consistent which led to failure of Windows test |
| tasks. It has been revamped to consistently skip revisions that |
| have already been tested, based on the tree object of the revision. |
| |
| |
| Fixes since v2.28 |
| ----------------- |
| |
| * The "mediawiki" remote backend which lives in contrib/mw-to-git/ |
| and is not built with git by default, had an RCE bug allowing a |
| malicious MediaWiki server operator to inject arbitrary commands |
| for execution by a cloning client. This has been fixed. |
| |
| The bug was discovered and reported by Joern Schneeweisz of GitLab |
| to the git-security mailing list. Its practical impact due to the |
| obscurity of git-remote-mediawiki was deemed small enough to forgo |
| a dedicated security release. |
| |
| * "git clone --separate-git-dir=$elsewhere" used to stomp on the |
| contents of the existing directory $elsewhere, which has been |
| taught to fail when $elsewhere is not an empty directory. |
| (merge dfaa209a79 bw/fail-cloning-into-non-empty later to maint). |
| |
| * With the base fix to 2.27 regresion, any new extensions in a v0 |
| repository would still be silently honored, which is not quite |
| right. Instead, complain and die loudly. |
| (merge ec91ffca04 jk/reject-newer-extensions-in-v0 later to maint). |
| |
| * Fetching from a lazily cloned repository resulted at the server |
| side in attempts to lazy fetch objects that the client side has, |
| many of which will not be available from the third-party anyway. |
| (merge 77aa0941ce jt/avoid-lazy-fetching-upon-have-check later to maint). |
| |
| * Fix to an ancient bug caused by an over-eager attempt for |
| optimization. |
| (merge a98f7fb366 rs/add-index-entry-optim-fix later to maint). |
| |
| * Pushing a ref whose name contains non-ASCII character with the |
| "--force-with-lease" option did not work over smart HTTP protocol, |
| which has been corrected. |
| (merge cd85b447bf bc/push-cas-cquoted-refname later to maint). |
| |
| * "git mv src dst", when src is an unmerged path, errored out |
| correctly but with an incorrect error message to claim that src is |
| not tracked, which has been clarified. |
| (merge 9b906af657 ct/mv-unmerged-path-error later to maint). |
| |
| * Fix to a regression introduced during 2.27 cycle. |
| (merge cada7308ad en/fill-directory-exponential later to maint). |
| |
| * Command line completion (in contrib/) update. |
| (merge 688b87c81b mp/complete-show-color-moved later to maint). |
| |
| * All "mergy" operations that internally use the merge-recursive |
| machinery should honor the merge.renormalize configuration, but |
| many of them didn't. |
| |
| * Doc cleanup around "worktree". |
| (merge dc9c144be5 es/worktree-doc-cleanups later to maint). |
| |
| * The "git blame --first-parent" option was not documented, but now |
| it is. |
| (merge 11bc12ae1e rp/blame-first-parent-doc later to maint). |
| |
| * 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. |
| (merge 09b2aa30c9 ps/ref-transaction-hook later to maint). |
| |
| * 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. |
| (merge 4c025c667e rp/apply-cached-with-i-t-a later to maint). |
| |
| * "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. |
| (merge cb0dd22b82 rp/ita-diff-modefix later to maint). |
| |
| * 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. |
| (merge 5da69c0dac ak/sequencer-fix-find-uniq-abbrev later to maint). |
| |
| * 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. |
| (merge c2ebaa27d6 jk/blame-coalesce-fix later to maint). |
| |
| * The regexp to identify the function boundary for FORTRAN programs |
| has been updated. |
| (merge 75c3b6b2e8 pb/userdiff-fortran-update later to maint). |
| |
| * A few end-user facing messages have been updated to be |
| hash-algorithm agnostic. |
| (merge 4279000d3e jc/object-names-are-not-sha-1 later to maint). |
| |
| * "unlink" emulation on MinGW has been optimized. |
| (merge 680e0b4524 jh/mingw-unlink later to maint). |
| |
| * 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. |
| (merge ccf236a23a es/init-no-separate-git-dir-in-bare later to maint). |
| |
| * "ls-files -o" mishandled the top-level directory of another git |
| working tree that hangs in the current git working tree. |
| (merge ab282aa548 en/dir-nonbare-embedded later to maint). |
| |
| * Fix some incorrect UNLEAK() annotations. |
| (merge 3e19816dc0 jk/unleak-fixes later to maint). |
| |
| * Use more buffered I/O where we used to call many small write(2)s. |
| (merge a698d67b08 rs/more-buffered-io later to maint). |
| |
| * The patch-id computation did not ignore the "incomplete last line" |
| marker like whitespaces. |
| (merge 82a62015a7 rs/patch-id-with-incomplete-line later to maint). |
| |
| * Updates into a lazy/partial clone with a submodule did not work |
| well with transfer.fsckobjects set. |
| |
| * The parser for "git for-each-ref --format=..." was too loose when |
| parsing the "%(trailers...)" atom, and forgot that "trailers" and |
| "trailers:<modifiers>" are the only two allowed forms, which has |
| been corrected. |
| (merge 2c22e102f8 hv/ref-filter-trailers-atom-parsing-fix later to maint). |
| |
| * Long ago, we decided to use 3 threads by default when running the |
| index-pack task in parallel, which has been adjusted a bit upwards. |
| (merge fbff95b67f jk/index-pack-w-more-threads later to maint). |
| |
| * "git restore/checkout --no-overlay" with wildcarded pathspec |
| mistakenly removed matching paths in subdirectories, which has been |
| corrected. |
| (merge bfda204ade rs/checkout-no-overlay-pathspec-fix later to maint). |
| |
| * The description of --cached/--index options in "git apply --help" |
| has been updated. |
| (merge d064702be3 rp/apply-cached-doc later to maint). |
| |
| * Feeding "$ZERO_OID" to "git log --ignore-missing --stdin", and |
| running "git log --ignore-missing $ZERO_OID" fell back to start |
| digging from HEAD; it has been corrected to become a no-op, like |
| "git log --tags=no-tag-matches-this-pattern" does. |
| (merge 04a0e98515 jk/rev-input-given-fix later to maint). |
| |
| * Various callers of run_command API have been modernized. |
| (merge afbdba391e jc/run-command-use-embedded-args later to maint). |
| |
| * List of options offered and accepted by "git add -i/-p" were |
| inconsistent, which have been corrected. |
| (merge ce910287e7 pw/add-p-allowed-options-fix later to maint). |
| |
| * "git diff --stat -w" showed 0-line changes for paths whose changes |
| were only whitespaces, which was not intuitive. We now omit such |
| paths from the stat output. |
| (merge 1cf3d5db9b mr/diff-hide-stat-wo-textual-change later to maint). |
| |
| * It was possible for xrealloc() to send a non-NULL pointer that has |
| been freed, which has been fixed. |
| (merge 6479ea4a8a jk/xrealloc-avoid-use-after-free later to maint). |
| |
| * "git status" has trouble showing where it came from by interpreting |
| reflog entries that record certain events, e.g. "checkout @{u}", and |
| gives a hard/fatal error. Even though it inherently is impossible |
| to give a correct answer because the reflog entries lose some |
| information (e.g. "@{u}" does not record what branch the user was |
| on hence which branch 'the upstream' needs to be computed, and even |
| if the record were available, the relationship between branches may |
| have changed), at least hide the error and allow "status" to show its |
| output. |
| |
| * "git status --short" quoted a path with SP in it when tracked, but |
| not those that are untracked, ignored or unmerged. They are all |
| shown quoted consistently. |
| |
| * "git diff/show" on a change that involves a submodule used to read |
| the information on commits in the submodule from a wrong repository |
| and gave a wrong information when the commit-graph is involved. |
| (merge 85a1ec2c32 mf/submodule-summary-with-correct-repository later to maint). |
| |
| * Unlike "git config --local", "git config --worktree" did not fail |
| early and cleanly when started outside a git repository. |
| (merge 378fe5fc3d mt/config-fail-nongit-early later to maint). |
| |
| * There is a logic to estimate how many objects are in the |
| repository, which is meant to run once per process invocation, but |
| it ran every time the estimated value was requested. |
| (merge 67bb65de5d jk/dont-count-existing-objects-twice later to maint). |
| |
| * "git remote set-head" that failed still said something that hints |
| the operation went through, which was misleading. |
| (merge 5a07c6c3c2 cs/don-t-pretend-a-failed-remote-set-head-succeeded later to maint). |
| |
| * "git fetch --all --ipv4/--ipv6" forgot to pass the protocol options |
| to instances of the "git fetch" that talk to individual remotes, |
| which has been corrected. |
| (merge 4e735c1326 ar/fetch-ipversion-in-all later to maint). |
| |
| * The "unshelve" subcommand of "git p4" incorrectly used commit^N |
| where it meant to say commit~N to name the Nth generation |
| ancestor, which has been corrected. |
| (merge 0acbf5997f ld/p4-unshelve-fix later to maint). |
| |
| * "git clone" that clones from SHA-1 repository, while |
| GIT_DEFAULT_HASH set to use SHA-256 already, resulted in an |
| unusable repository that half-claims to be SHA-256 repository |
| with SHA-1 objects and refs. This has been corrected. |
| |
| * Adjust sample hooks for hash algorithm other than SHA-1. |
| (merge d8d3d632f4 dl/zero-oid-in-hooks later to maint). |
| |
| * "git range-diff" showed incorrect diffstat, which has been |
| corrected. |
| |
| * Earlier we taught "git pull" to warn when the user does not say the |
| histories need to be merged, rebased or accepts only fast- |
| forwarding, but the warning triggered for those who have set the |
| pull.ff configuration variable. |
| (merge 54200cef86 ah/pull later to maint). |
| |
| * Compilation fix around type punning. |
| (merge 176380fd11 jk/drop-unaligned-loads later to maint). |
| |
| * "git blame --ignore-rev/--ignore-revs-file" failed to validate |
| their input are valid revision, and failed to take into account |
| that the user may want to give an annotated tag instead of a |
| commit, which has been corrected. |
| (merge 610e2b9240 jc/blame-ignore-fix later to maint). |
| |
| * "git bisect start X Y", when X and Y are not valid committish |
| object names, should take X and Y as pathspec, but didn't. |
| (merge 73c6de06af cc/bisect-start-fix later to maint). |
| |
| * The explanation of the "scissors line" has been clarified. |
| (merge 287416dba6 eg/mailinfo-doc-scissors later to maint). |
| |
| * A race that leads to an access to a free'd data was corrected in |
| the codepath that reads pack files. |
| (merge bda959c476 mt/delta-base-cache-races later to maint). |
| |
| * in_merge_bases_many(), a way to see if a commit is reachable from |
| any commit in a set of commits, was totally broken when the |
| commit-graph feature was in use, which has been corrected. |
| (merge 8791bf1841 ds/in-merge-bases-many-optim-bug later to maint). |
| |
| * "git submodule update --quiet" did not squelch underlying "rebase" |
| and "pull" commands. |
| (merge 3ad0401e9e td/submodule-update-quiet later to maint). |
| |
| * The lazy fetching done internally to make missing objects available |
| in a partial clone incorrectly made permanent damage to the partial |
| clone filter in the repository, which has been corrected. |
| |
| * "log -c --find-object=X" did not work well to find a merge that |
| involves a change to an object X from only one parent. |
| (merge 957876f17d jk/diff-cc-oidfind-fix later to maint). |
| |
| * Other code cleanup, docfix, build fix, etc. |
| (merge 84544f2ea3 sk/typofixes later to maint). |
| (merge b17f411ab5 ar/help-guides-doc later to maint). |
| (merge 98c6871fad rs/grep-simpler-parse-object-or-die-call later to maint). |
| (merge 861c4ce141 en/typofixes later to maint). |
| (merge 60e47f6773 sg/ci-git-path-fix-with-pyenv later to maint). |
| (merge e2bfa50ac3 jb/doc-packfile-name later to maint). |
| (merge 918d8ff780 es/worktree-cleanup later to maint). |
| (merge dc156bc31f ma/t1450-quotefix later to maint). |
| (merge 56e743426b en/merge-recursive-comment-fixes later to maint). |
| (merge 7d23ff818f rs/bisect-oid-to-hex-fix later to maint). |
| (merge de20baf2c9 ny/notes-doc-sample-update later to maint). |
| (merge f649aaaf82 so/rev-parser-errormessage-fix later to maint). |
| (merge 6103d58b7f bc/sha-256-cvs-svn-updates later to maint). |
| (merge ac900fddb7 ma/stop-progress-null-fix later to maint). |
| (merge e767963ab6 rs/upload-pack-sigchain-fix later to maint). |
| (merge a831908599 rs/preserve-merges-unused-code-removal later to maint). |
| (merge 6dfefe70a9 jb/commit-graph-doc-fix later to maint). |
| (merge 847b37271e pb/set-url-docfix later to maint). |
| (merge 748f733d54 mt/checkout-entry-dead-code-removal later to maint). |
| (merge ce820cbd58 dl/subtree-docs later to maint). |
| (merge 55fe225dde jk/leakfix later to maint). |
| (merge ee22a29215 so/pretty-abbrev-doc later to maint). |
| (merge 3100fd5588 jc/post-checkout-doc later to maint). |
| (merge 17bae89476 pb/doc-external-diff-env later to maint). |
| (merge 27ed6ccc12 jk/worktree-check-clean-leakfix later to maint). |
| (merge 1302badd16 ea/blame-use-oideq later to maint). |
| (merge e6d5a11fed al/t3200-back-on-a-branch later to maint). |
| (merge 324efcf6b6 pw/add-p-leakfix later to maint). |
| (merge 1c6ffb546b jk/add-i-fixes later to maint). |
| (merge e40e936551 cd/commit-graph-doc later to maint). |
| (merge 0512eabd91 jc/sequencer-stopped-sha-simplify later to maint). |
| (merge d01141de5a so/combine-diff-simplify later to maint). |
| (merge 3be01e5ab1 sn/fast-import-doc later to maint). |