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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
commitc8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch)
tree24e09d9f84dec336720cf393e156089ca2835791 /Documentation/RelNotes/2.38.0.txt
parentInitial commit. (diff)
downloadgit-c8bae7493d2f2910b57f13ded012e86bdcfb0532.tar.xz
git-c8bae7493d2f2910b57f13ded012e86bdcfb0532.zip
Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+Git v2.38 Release Notes
+=======================
+
+UI, Workflows & Features
+
+ * "git remote show [-n] frotz" now pays attention to negative
+ pathspec.
+
+ * "git push" sometimes performs poorly when reachability bitmaps are
+ used, even in a repository where other operations are helped by
+ bitmaps. The push.useBitmaps configuration variable is introduced
+ to allow disabling use of reachability bitmaps only for "git push".
+
+ * "git grep -m<max-hits>" is a way to limit the hits shown per file.
+
+ * "git merge-tree" learned a new mode where it takes two commits and
+ computes a tree that would result in the merge commit, if the
+ histories leading to these two commits were to be merged.
+
+ * "git mv A B" in a sparsely populated working tree can be asked to
+ move a path between directories that are "in cone" (i.e. expected
+ to be materialized in the working tree) and "out of cone"
+ (i.e. expected to be hidden). The handling of such cases has been
+ improved.
+
+ * Earlier, HTTP transport clients learned to tell the server side
+ what locale they are in by sending Accept-Language HTTP header, but
+ this was done only for some requests but not others.
+
+ * Introduce a safe.barerepository configuration variable that
+ allows users to forbid discovery of bare repositories.
+
+ * Various messages that come from the pack-bitmap codepaths have been
+ tweaked.
+
+ * "git rebase -i" learns to update branches whose tip appear in the
+ rebased range with "--update-refs" option.
+
+ * "git ls-files" learns the "--format" option to tweak its output.
+
+ * "git cat-file" learned an option to use the mailmap when showing
+ commit and tag objects.
+
+ * When "git merge" finds that it cannot perform a merge, it should
+ restore the working tree to the state before the command was
+ initiated, but in some corner cases it didn't.
+
+ * Operating modes like "--batch" of "git cat-file" command learned to
+ take NUL-terminated input, instead of one-item-per-line.
+
+ * "git rm" has become more aware of the sparse-index feature.
+
+ * "git rev-list --disk-usage" learned to take an optional value
+ "human" to show the reported value in human-readable format, like
+ "3.40MiB".
+
+ * The "diagnose" feature to create a zip archive for diagnostic
+ material has been lifted from "scalar" and made into a feature of
+ "git bugreport".
+
+ * The namespaces used by "log --decorate" from "refs/" hierarchy by
+ default has been tightened.
+
+ * "git rev-list --ancestry-path=C A..B" is a natural extension of
+ "git rev-list A..B"; instead of choosing a subset of A..B to those
+ that have ancestry relationship with A, it lets a subset with
+ ancestry relationship with C.
+
+ * "scalar" now enables built-in fsmonitor on enlisted repositories,
+ when able.
+
+ * The bash prompt (in contrib/) learned to optionally indicate when
+ the index is unmerged.
+
+ * "git clone" command learned the "--bundle-uri" option to coordinate
+ with hosting sites the use of pre-prepared bundle files.
+
+ * "git range-diff" learned to honor pathspec argument if given.
+
+ * "git format-patch --from=<ident>" can be told to add an in-body
+ "From:" line even for commits that are authored by the given
+ <ident> with "--force-in-body-from" option.
+
+ * The built-in fsmonitor refuses to work on a network mounted
+ repositories; a configuration knob for users to override this has
+ been introduced.
+
+ * The "scalar" addition from Microsoft is now part of the core Git
+ installation.
+
+
+Performance, Internal Implementation, Development Support etc.
+
+ * Collection of what is referenced by objects in promisor packs have
+ been optimized to inspect these objects in the in-pack order.
+
+ * Introduce a helper to see if a branch is already being worked on
+ (hence should not be newly checked out in a working tree), which
+ performs much better than the existing find_shared_symref() to
+ replace many uses of the latter.
+
+ * Teach "git archive" to (optionally and then by default) avoid
+ spawning an external "gzip" process when creating ".tar.gz" (and
+ ".tgz") archives.
+
+ * Allow large objects read from a packstream to be streamed into a
+ loose object file straight, without having to keep it in-core as a
+ whole.
+
+ * Further preparation to turn git-submodule.sh into a builtin
+ continues.
+
+ * Apply Coccinelle rule to turn raw memmove() into MOVE_ARRAY() cpp
+ macro, which would improve maintainability and readability.
+
+ * Teach "make all" to build gitweb as well.
+
+ * Tweak tests so that they still work when the "git init" template
+ did not create .git/info directory.
+
+ * Add Coccinelle rules to detect the pattern of initializing and then
+ finalizing a structure without using it in between at all, which
+ happens after code restructuring and the compilers fail to
+ recognize as an unused variable.
+
+ * The code to convert between GPG trust level strings and internal
+ constants we use to represent them have been cleaned up.
+
+ * Support for libnettle as SHA256 implementation has been added.
+
+ * The way "git multi-pack" uses parse-options API has been improved.
+
+ * A Coccinelle rule (in contrib/) to encourage use of COPY_ARRAY
+ macro has been improved.
+
+ * API tweak to make it easier to run fuzz testing on commit-graph parser.
+
+ * Omit fsync-related trace2 entries when their values are all zero.
+
+ * The codepath to write multi-pack index has been taught to release a
+ large chunk of memory that holds an array of objects in the packs,
+ as soon as it is done with the array, to reduce memory consumption.
+
+ * Add a level of redirection to array allocation API in xdiff part,
+ to make it easier to share with the libgit2 project.
+
+ * "git fetch" client logs the partial clone filter used in the trace2
+ output.
+
+ * The "bundle URI" design gets documented.
+
+ * The common ancestor negotiation exchange during a "git fetch"
+ session now leaves trace log.
+
+ * Test portability improvements.
+ (merge 4d1d843be7 mt/rot13-in-c later to maint).
+
+ * The "subcommand" mode is introduced to parse-options API and update
+ the command line parser of Git commands with subcommands.
+
+ * The pack bitmap file gained a bitmap-lookup table to speed up
+ locating the necessary bitmap for a given commit.
+
+ * The assembly version of SHA-1 implementation for PPC has been
+ removed.
+
+ * The server side that responds to "git fetch" and "git clone"
+ request has been optimized by allowing it to send objects in its
+ object store without recomputing and validating the object names.
+
+ * Annotate function parameters that are not used (but cannot be
+ removed for structural reasons), to prepare us to later compile
+ with -Wunused warning turned on.
+
+ * Share the text used to explain configuration variables used by "git
+ <subcmd>" in "git help <subcmd>" with the text from "git help config".
+
+ * "git mv A B" in a sparsely populated working tree can be asked to
+ move a path from a directory that is "in cone" to another directory
+ that is "out of cone". Handling of such a case has been improved.
+
+ * The chainlint script for our tests has been revamped.
+
+
+Fixes since v2.37
+-----------------
+
+ * Rewrite of "git add -i" in C that appeared in Git 2.25 didn't
+ correctly record a removed file to the index, which was fixed.
+
+ * Certain diff options are currently ignored when combined-diff is
+ shown; mark them as incompatible with the feature.
+
+ * Adjust technical/bitmap-format to be formatted by AsciiDoc, and
+ add some missing information to the documentation.
+
+ * Fixes for tests when the source directory has unusual characters in
+ its path, e.g. whitespaces, double-quotes, etc.
+
+ * "git mktree --missing" lazily fetched objects that are missing from
+ the local object store, which was totally unnecessary for the purpose
+ of creating the tree object(s) from its input.
+
+ * Give _() markings to fatal/warning/usage: labels that are shown in
+ front of these messages.
+
+ * References to commands-to-be-typed-literally in "git rebase"
+ documentation mark-up have been corrected.
+
+ * In a non-bare repository, the behavior of Git when the
+ core.worktree configuration variable points at a directory that has
+ a repository as its subdirectory, regressed in Git 2.27 days.
+
+ * Recent update to vimdiff layout code has been made more robust
+ against different end-user vim settings.
+
+ * Plug various memory leaks, both in the main code and in test-tool
+ commands.
+
+ * Fixes a long-standing corner case bug around directory renames in
+ the merge-ort strategy.
+
+ * The resolve-undo information in the index was not protected against
+ GC, which has been corrected.
+
+ * A corner case bug where lazily fetching objects from a promisor
+ remote resulted in infinite recursion has been corrected.
+
+ * "git clone" from a repository with some ref whose HEAD is unborn
+ did not set the HEAD in the resulting repository correctly, which
+ has been corrected.
+
+ * An earlier attempt to plug leaks placed a clean-up label to jump to
+ at a bogus place, which as been corrected.
+
+ * Variable quoting fix in the vimdiff driver of "git mergetool"
+
+ * "git shortlog -n" relied on the underlying qsort() to be stable,
+ which shouldn't have. Fixed.
+
+ * A fix for a regression in test framework.
+
+ * mkstemp() emulation on Windows has been improved.
+
+ * Add missing documentation for "include" and "includeIf" features in
+ "git config" file format, which incidentally teaches the command
+ line completion to include them in its offerings.
+
+ * Avoid "white/black-list" in documentation and code comments.
+
+ * Workaround for a compiler warning against use of die() in
+ osx-keychain (in contrib/).
+
+ * Workaround for a false positive compiler warning.
+
+ * "git p4" working on UTF-16 files on Windows did not implement
+ CRLF-to-LF conversion correctly, which has been corrected.
+
+ * "git p4" did not handle non-ASCII client name well, which has been
+ corrected.
+
+ * "rerere-train" script (in contrib/) used to honor commit.gpgSign
+ while recreating the throw-away merges.
+
+ * "git checkout" miscounted the paths it updated, which has been
+ corrected.
+
+ * Fix for a bug that makes write-tree to fail to write out a
+ non-existent index as a tree, introduced in 2.37.
+
+ * There was a bug in the codepath to upgrade generation information
+ in commit-graph from v1 to v2 format, which has been corrected.
+
+ * Gitweb had legacy URL shortener that is specific to the way
+ projects hosted on kernel.org used to (but no longer) work, which
+ has been removed.
+
+ * Fix build procedure for Windows that uses CMake so that it can pick
+ up the shell interpreter from local installation location.
+
+ * Conditionally allow building Python interpreter on Windows
+
+ * Fix to lstat() emulation on Windows.
+
+ * Older gcc with -Wall complains about the universal zero initializer
+ "struct s = { 0 };" idiom, which makes developers' lives
+ inconvenient (as -Werror is enabled by DEVELOPER=YesPlease). The
+ build procedure has been tweaked to help these compilers.
+
+ * Plug memory leaks in the failure code path in the "merge-ort" merge
+ strategy backend.
+
+ * "git symbolic-ref symref non..sen..se" is now diagnosed as an error.
+
+ * A follow-up fix to a fix for a regression in 2.36 around hooks.
+
+ * Avoid repeatedly running getconf to ask libc version in the test
+ suite, and instead just as it once per script.
+
+ * Platform-specific code that determines if a directory is OK to use
+ as a repository has been taught to report more details, especially
+ on Windows.
+
+ * "vimdiff3" regression fix.
+
+ * "git fsck" reads mode from tree objects but canonicalizes the mode
+ before passing it to the logic to check object sanity, which has
+ hid broken tree objects from the checking logic. This has been
+ corrected, but to help existing projects with broken tree objects
+ that they cannot fix retroactively, the severity of anomalies this
+ code detects has been demoted to "info" for now.
+
+ * Fixes to sparse index compatibility work for "reset" and "checkout"
+ commands.
+
+ * An earlier optimization discarded a tree-object buffer that is
+ still in use, which has been corrected.
+
+ * Fix deadlocks between main Git process and subprocess spawned via
+ the pipe_command() API, that can kill "git add -p" that was
+ reimplemented in C recently.
+
+ * The sequencer machinery translated messages left in the reflog by
+ mistake, which has been corrected.
+
+ * xcalloc(), imitating calloc(), takes "number of elements of the
+ array", and "size of a single element", in this order. A call that
+ does not follow this ordering has been corrected.
+
+ * The preload-index codepath made copies of pathspec to give to
+ multiple threads, which were left leaked.
+
+ * Update the version of Ubuntu used for GitHub Actions CI from 18.04
+ to 22.04.
+
+ * The auto-stashed local changes created by "git merge --autostash"
+ was mixed into a conflicted state left in the working tree, which
+ has been corrected.
+
+ * Multi-pack index got corrupted when preferred pack changed from one
+ pack to another in a certain way, which has been corrected.
+ (merge 99e4d084ff tb/midx-with-changing-preferred-pack-fix later to maint).
+
+ * The clean-up of temporary files created via mks_tempfile_dt() was
+ racy and attempted to unlink() the leading directory when signals
+ are involved, which has been corrected.
+ (merge babe2e0559 rs/tempfile-cleanup-race-fix later to maint).
+
+ * FreeBSD portability fix for "git maintenance" that spawns "crontab"
+ to schedule tasks.
+ (merge ee69e7884e bc/gc-crontab-fix later to maint).
+
+ * Those who use diff-so-fancy as the diff-filter noticed a regression
+ or two in the code that parses the diff output in the built-in
+ version of "add -p", which has been corrected.
+ (merge 0a101676e5 js/add-p-diff-parsing-fix later to maint).
+
+ * Segfault fix-up to an earlier fix to the topic to teach "git reset"
+ and "git checkout" work better in a sparse checkout.
+ (merge 037f8ea6d9 vd/sparse-reset-checkout-fixes later to maint).
+
+ * "git diff --no-index A B" managed its the pathnames of its two
+ input files rather haphazardly, sometimes leaking them. The
+ command line argument processing has been straightened out to clean
+ it up.
+ (merge 2b43dd0eb5 rs/diff-no-index-cleanup later to maint).
+
+ * "git rev-list --verify-objects" ought to inspect the contents of
+ objects and notice corrupted ones, but it didn't when the commit
+ graph is in use, which has been corrected.
+ (merge b27ccae34b jk/rev-list-verify-objects-fix later to maint).
+
+ * More fixes to "add -p"
+ (merge 64ec8efb83 js/builtin-add-p-portability-fix later to maint).
+
+ * The parser in the script interface to parse-options in "git
+ rev-parse" has been updated to diagnose a bogus input correctly.
+ (merge f20b9c36d0 ow/rev-parse-parseopt-fix later to maint).
+
+ * The code that manages list-object-filter structure, used in partial
+ clones, leaked the instances, which has been plugged.
+ (merge 66eede4a37 jk/plug-list-object-filter-leaks later to maint).
+
+ * Fix another UI regression in the reimplemented "add -p".
+ (merge f6f0ee247f rs/add-p-worktree-mode-prompt-fix later to maint).
+
+ * "git fetch" over protocol v2 sent an incorrect ref prefix request
+ to the server and made "git pull" with configured fetch refspec
+ that does not cover the remote branch to merge with fail, which has
+ been corrected.
+ (merge 49ca2fba39 jk/proto-v2-ref-prefix-fix later to maint).
+
+ * A result from opendir() was leaking in the commit-graph expiration
+ codepath, which has been plugged.
+ (merge 12f1ae5324 ml/commit-graph-expire-dir-leak-fix later to maint).
+
+ * Just like we have coding guidelines, we now have guidelines for
+ reviewers.
+ (merge e01b851923 vd/doc-reviewing-guidelines later to maint).
+
+ * Other code cleanup, docfix, build fix, etc.
+ (merge 77b9e85c0f vd/fix-perf-tests later to maint).
+ (merge 0682bc43f5 jk/test-crontab-fixes later to maint).
+ (merge b46dd1726c cc/doc-trailer-whitespace-rules later to maint).