Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 404 insertions, 0 deletions

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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).