288 lines
12 KiB
Plaintext
288 lines
12 KiB
Plaintext
Git 2.29 Release Notes
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======================
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Updates since v2.28
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-------------------
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UI, Workflows & Features
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* "git help log" has been enhanced by sharing more material from the
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documentation for the underlying "git rev-list" command.
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* "git for-each-ref --format=<>" learned %(contents:size).
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* "git merge" learned to selectively omit " into <branch>" at the end
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of the title of default merge message with merge.suppressDest
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configuration.
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* The component to respond to "git fetch" request is made more
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configurable to selectively allow or reject object filtering
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specification used for partial cloning.
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* Stop when "sendmail.*" configuration variables are defined, which
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could be a mistaken attempt to define "sendemail.*" variables.
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* The existing backends for "git mergetool" based on variants of vim
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have been refactored and then support for "nvim" has been added.
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* "git bisect" learns the "--first-parent" option to find the first
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breakage along the first-parent chain.
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* "git log --first-parent -p" showed patches only for single-parent
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commits on the first-parent chain; the "--first-parent" option has
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been made to imply "-m". Use "--no-diff-merges" to restore the
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previous behaviour to omit patches for merge commits.
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* The commit labels used to explain each side of conflicted hunks
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placed by the sequencer machinery have been made more readable by
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humans.
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* The "--batch-size" option of "git multi-pack-index repack" command
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is now used to specify that very small packfiles are collected into
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one until the total size roughly exceeds it.
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* The recent addition of SHA-256 support is marked as experimental in
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the documentation.
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* "git fetch" learned --no-write-fetch-head option to avoid writing
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the FETCH_HEAD file.
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* Command line completion (in contrib/) usually omits redundant,
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deprecated and/or dangerous options from its output; it learned to
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optionally include all of them.
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* The output from the "diff" family of the commands had abbreviated
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object names of blobs involved in the patch, but its length was not
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affected by the --abbrev option. Now it is.
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Performance, Internal Implementation, Development Support etc.
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* The changed-path Bloom filter is improved using ideas from an
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independent implementation.
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* Updates to the changed-paths bloom filter.
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* The test framework has been updated so that most tests will run
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with predictable (artificial) timestamps.
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* Preliminary clean-up of the refs API in preparation for adding a
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new refs backend "reftable".
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* Dev support to limit the use of test_must_fail to only git commands.
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* While packing many objects in a repository with a promissor remote,
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lazily fetching missing objects from the promissor remote one by
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one may be inefficient---the code now attempts to fetch all the
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missing objects in batch (obviously this won't work for a lazy
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clone that lazily fetches tree objects as you cannot even enumerate
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what blobs are missing until you learn which trees are missing).
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* The pretend-object mechanism checks if the given object already
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exists in the object store before deciding to keep the data
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in-core, but the check would have triggered lazy fetching of such
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an object from a promissor remote.
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* The argv_array API is useful for not just managing argv but any
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"vector" (NULL-terminated array) of strings, and has seen adoption
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to a certain degree. It has been renamed to "strvec" to reduce the
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barrier to adoption.
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* The final leg of SHA-256 transition plus doc updates. Note that
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there is no inter-operability between SHA-1 and SHA-256
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repositories yet.
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* CMake support to build with MSVC for Windows bypassing the Makefile.
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* A new helper function has_object() has been introduced to make it
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easier to mark object existence checks that do and don't want to
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trigger lazy fetches, and a few such checks are converted using it.
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* A no-op replacement function implemented as a C preprocessor macro
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does not perform as good a job as one implemented as a "static
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inline" function in catching errors in parameters; replace the
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former with the latter in <git-compat-util.h> header.
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* Test framework update.
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(merge d572f52a64 es/test-cmp-typocatcher later to maint).
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* Updates to "git merge" tests, in preparation for a new merge
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strategy backend.
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* midx and commit-graph files now use the byte defined in their file
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format specification for identifying the hash function used for
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object names.
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* The FETCH_HEAD is now always read from the filesystem regardless of
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the ref backend in use, as its format is much richer than the
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normal refs, and written directly by "git fetch" as a plain file..
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* A handful of places in in-tree code still relied on being able to
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execute the git subcommands, especially built-ins, in "git-foo"
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form, which have been corrected.
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Fixes since v2.28
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-----------------
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* "git clone --separate-git-dir=$elsewhere" used to stomp on the
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contents of the existing directory $elsewhere, which has been
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taught to fail when $elsewhere is not an empty directory.
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(merge dfaa209a79 bw/fail-cloning-into-non-empty later to maint).
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* With the base fix to 2.27 regresion, any new extensions in a v0
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repository would still be silently honored, which is not quite
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right. Instead, complain and die loudly.
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(merge ec91ffca04 jk/reject-newer-extensions-in-v0 later to maint).
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* Fetching from a lazily cloned repository resulted at the server
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side in attempts to lazy fetch objects that the client side has,
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many of which will not be available from the third-party anyway.
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(merge 77aa0941ce jt/avoid-lazy-fetching-upon-have-check later to maint).
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* Fix to an ancient bug caused by an over-eager attempt for
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optimization.
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(merge a98f7fb366 rs/add-index-entry-optim-fix later to maint).
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* Pushing a ref whose name contains non-ASCII character with the
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"--force-with-lease" option did not work over smart HTTP protocol,
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which has been corrected.
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(merge cd85b447bf bc/push-cas-cquoted-refname later to maint).
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* "git mv src dst", when src is an unmerged path, errored out
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correctly but with an incorrect error message to claim that src is
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not tracked, which has been clarified.
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(merge 9b906af657 ct/mv-unmerged-path-error later to maint).
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* Fix to a regression introduced during 2.27 cycle.
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(merge cada7308ad en/fill-directory-exponential later to maint).
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* Command line completion (in contrib/) update.
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(merge 688b87c81b mp/complete-show-color-moved later to maint).
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* All "mergy" operations that internally use the merge-recursive
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machinery should honor the merge.renormalize configuration, but
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many of them didn't.
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* Doc cleanup around "worktree".
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(merge dc9c144be5 es/worktree-doc-cleanups later to maint).
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* The "git blame --first-parent" option was not documented, but now
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it is.
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(merge 11bc12ae1e rp/blame-first-parent-doc later to maint).
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* The logic to find the ref transaction hook script attempted to
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cache the path to the found hook without realizing that it needed
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to keep a copied value, as the API it used returned a transitory
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buffer space. This has been corrected.
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(merge 09b2aa30c9 ps/ref-transaction-hook later to maint).
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* Recent versions of "git diff-files" shows a diff between the index
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and the working tree for "intent-to-add" paths as a "new file"
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patch; "git apply --cached" should be able to take "git diff-files"
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and should act as an equivalent to "git add" for the path, but the
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command failed to do so for such a path.
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(merge 4c025c667e rp/apply-cached-with-i-t-a later to maint).
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* "git diff [<tree-ish>] $path" for a $path that is marked with i-t-a
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bit was not showing the mode bits from the working tree.
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(merge cb0dd22b82 rp/ita-diff-modefix later to maint).
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* Ring buffer with size 4 used for bin-hex translation resulted in a
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wrong object name in the sequencer's todo output, which has been
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corrected.
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(merge 5da69c0dac ak/sequencer-fix-find-uniq-abbrev later to maint).
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* When given more than one target line ranges, "git blame -La,b
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-Lc,d" was over-eager to coalesce groups of original lines and
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showed incorrect results, which has been corrected.
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(merge c2ebaa27d6 jk/blame-coalesce-fix later to maint).
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* The regexp to identify the function boundary for FORTRAN programs
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has been updated.
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(merge 75c3b6b2e8 pb/userdiff-fortran-update later to maint).
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* A few end-user facing messages have been updated to be
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hash-algorithm agnostic.
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(merge 4279000d3e jc/object-names-are-not-sha-1 later to maint).
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* "unlink" emulation on MinGW has been optimized.
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(merge 680e0b4524 jh/mingw-unlink later to maint).
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* The purpose of "git init --separate-git-dir" is to initialize a
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new project with the repository separate from the working tree,
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or, in the case of an existing project, to move the repository
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(the .git/ directory) out of the working tree. It does not make
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sense to use --separate-git-dir with a bare repository for which
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there is no working tree, so disallow its use with bare
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repositories.
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(merge ccf236a23a es/init-no-separate-git-dir-in-bare later to maint).
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* "ls-files -o" mishandled the top-level directory of another git
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working tree that hangs in the current git working tree.
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(merge ab282aa548 en/dir-nonbare-embedded later to maint).
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* Fix some incorrect UNLEAK() annotations.
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(merge 3e19816dc0 jk/unleak-fixes later to maint).
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* Use more buffered I/O where we used to call many small write(2)s.
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(merge a698d67b08 rs/more-buffered-io later to maint).
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* The patch-id computation did not ignore the "incomplete last line"
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marker like whitespaces.
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(merge 82a62015a7 rs/patch-id-with-incomplete-line later to maint).
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* Updates into a lazy/partial clone with a submodule did not work
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well with transfer.fsckobjects set.
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* The parser for "git for-each-ref --format=..." was too loose when
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parsing the "%(trailers...)" atom, and forgot that "trailers" and
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"trailers:<modifiers>" are the only two allowed forms, which has
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been corrected.
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(merge 2c22e102f8 hv/ref-filter-trailers-atom-parsing-fix later to maint).
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* Long ago, we decided to use 3 threads by default when running the
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index-pack task in parallel, which has been adjusted a bit upwards.
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(merge fbff95b67f jk/index-pack-w-more-threads later to maint).
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* "git restore/checkout --no-overlay" with wildcarded pathspec
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mistakenly removed matching paths in subdirectories, which has been
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corrected.
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(merge bfda204ade rs/checkout-no-overlay-pathspec-fix later to maint).
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* The description of --cached/--index options in "git apply --help"
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has been updated.
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(merge d064702be3 rp/apply-cached-doc later to maint).
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* Feeding "$ZERO_OID" to "git log --ignore-missing --stdin", and
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running "git log --ignore-missing $ZERO_OID" fell back to start
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digging from HEAD; it has been corrected to become a no-op, like
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"git log --tags=no-tag-matches-this-pattern" does.
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(merge 04a0e98515 jk/rev-input-given-fix later to maint).
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* Various callers of run_command API has been modernized.
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(merge afbdba391e jc/run-command-use-embedded-args later to maint).
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* Other code cleanup, docfix, build fix, etc.
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(merge 84544f2ea3 sk/typofixes later to maint).
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(merge b17f411ab5 ar/help-guides-doc later to maint).
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(merge 98c6871fad rs/grep-simpler-parse-object-or-die-call later to maint).
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(merge 861c4ce141 en/typofixes later to maint).
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(merge 60e47f6773 sg/ci-git-path-fix-with-pyenv later to maint).
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(merge e2bfa50ac3 jb/doc-packfile-name later to maint).
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(merge 918d8ff780 es/worktree-cleanup later to maint).
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(merge dc156bc31f ma/t1450-quotefix later to maint).
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(merge 56e743426b en/merge-recursive-comment-fixes later to maint).
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(merge 7d23ff818f rs/bisect-oid-to-hex-fix later to maint).
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(merge de20baf2c9 ny/notes-doc-sample-update later to maint).
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(merge f649aaaf82 so/rev-parser-errormessage-fix later to maint).
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(merge 6103d58b7f bc/sha-256-cvs-svn-updates later to maint).
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(merge ac900fddb7 ma/stop-progress-null-fix later to maint).
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(merge e767963ab6 rs/upload-pack-sigchain-fix later to maint).
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(merge a831908599 rs/preserve-merges-unused-code-removal later to maint).
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(merge 6dfefe70a9 jb/commit-graph-doc-fix later to maint).
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(merge 847b37271e pb/set-url-docfix later to maint).
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(merge 748f733d54 mt/checkout-entry-dead-code-removal later to maint).
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(merge ce820cbd58 dl/subtree-docs later to maint).
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(merge 55fe225dde jk/leakfix later to maint).
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