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-rw-r--r--Documentation/RelNotes/2.29.0.txt354
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diff --git a/Documentation/RelNotes/2.29.0.txt b/Documentation/RelNotes/2.29.0.txt
index 783cba3..06ba2f8 100644
--- a/Documentation/RelNotes/2.29.0.txt
+++ b/Documentation/RelNotes/2.29.0.txt
@@ -33,6 +33,95 @@ UI, Workflows & Features
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.
@@ -66,7 +155,9 @@ Performance, Internal Implementation, Development Support etc.
to a certain degree. It has been renamed to "strvec" to reduce the
barrier to adoption.
- * The final leg of SHA-256 transition.
+ * 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.
@@ -82,10 +173,64 @@ Performance, Internal Implementation, Development Support etc.
* 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.
@@ -145,6 +290,194 @@ Fixes since v2.28
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).
@@ -160,3 +493,22 @@ Fixes since v2.28
(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).