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| -rw-r--r-- | Documentation/RelNotes/2.39.0.txt | 346 |
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diff --git a/Documentation/RelNotes/2.39.0.txt b/Documentation/RelNotes/2.39.0.txt new file mode 100644 index 0000000..9bf00ec --- /dev/null +++ b/Documentation/RelNotes/2.39.0.txt @@ -0,0 +1,346 @@ +Git v2.39 Release Notes +======================= + +UI, Workflows & Features +------------------------ + + * "git grep" learned to expand the sparse-index more lazily and on + demand in a sparse checkout. + + * By default, use of fsmonitor on a repository on networked + filesystem is disabled. Add knobs to make it workable on macOS. + + * After checking out a "branch" that is a symbolic-ref that points at + another branch, "git symbolic-ref HEAD" reports the underlying + branch, not the symbolic-ref the user gave checkout as argument. + The command learned the "--no-recurse" option to stop after + dereferencing a symbolic-ref only once. + + * "git branch --edit-description @{-1}" is now a way to edit branch + description of the branch you were on before switching to the + current branch. + + * "git merge-tree --stdin" is a new way to request a series of merges + and report the merge results. + + * "git shortlog" learned to group by the "format" string. + + * A new "--include-whitespace" option is added to "git patch-id", and + existing bugs in the internal patch-id logic that did not match + what "git patch-id" produces have been corrected. + + * Enable gc.cruftpacks by default for those who opt into + feature.experimental setting. + + * "git repack" learns to send cruft objects out of the way into + packfiles outside the repository. + + * 'scalar reconfigure -a' is taught to automatically remove + scalar.repo entires which no longer exist. + + * Redact headers from cURL's h2h3 module in GIT_CURL_VERBOSE and + others. + + * 'git maintenance register' is taught to write configuration to an + arbitrary path, and 'git for-each-repo' is taught to expand tilde + characters in paths. + + * When creating new notes, the template used to get a stray empty + newline, which has been removed. + + * "git receive-pack" used to use all the local refs as the boundary for + checking connectivity of the data "git push" sent, but now it uses + only the refs that it advertised to the pusher. In a repository with + the .hideRefs configuration, this reduces the resources needed to + perform the check. + + * With '--recurse-submodules=on-demand', all submodules are + recursively pushed. + + +Performance, Internal Implementation, Development Support etc. +-------------------------------------------------------------- + + * With a bit of header twiddling, use the native regexp library on + macOS instead of the compat/ one. + + * Prepare for GNU [ef]grep that throw warning of their uses. + + * Sources related to fuzz testing have been moved down to their own + directory. + + * Most credential helpers ignored unknown entries in a credential + description, but a few died upon seeing them. The latter were + taught to ignore them, too + + * "scalar unregister" in a repository that is already been + unregistered reported an error. + + * Remove error detection from a function that fetches from promisor + remotes, and make it die when such a fetch fails to bring all the + requested objects, to give an early failure to various operations. + + * Update CodingGuidelines to clarify what features to use and avoid + in C99. + + * Avoid false-positive from LSan whose assumption may be broken with + higher optimization levels. + + * Enable address and undefined sanitizer tasks at GitHub Actions CI. + + * More UNUSED annotation to help using -Wunused option with the + compiler. + (merge 4b992f0a24 jk/unused-anno-more later to maint). + + * Rewrite a deep recursion in the skipping negotiator to use a loop + with on-heap prio queue to avoid stack wastage. + + * Add documentation for message IDs in fsck error messages. + + * Define the logical elements of a "bundle list", data structure to + store them in-core, format to transfer them, and code to parse + them. + + * The role the security mailing list plays in an embargoed release + has been documented. + + * Two new facilities, "timer" and "counter", are introduced to the + trace2 API. + + * Code simplification by using strvec_pushf() instead of building an + argument in a separate strbuf. + + * Make sure generated dependency file is stably sorted to help + developers debugging their build issues. + + * The glossary entries for "commit-graph file" and "reachability + bitmap" have been added. + + * Various tests exercising the transfer.credentialsInUrl + configuration are taught to avoid making requests which require + resolving localhost to reduce CI-flakiness. + + * A redundant diagnostic message is dropped from test_path_is_missing(). + + * Simplify the run-command API. + + * Update the actions/github-script dependency in CI to avoid a + deprecation warning. + + * Progress on being able to initialize a rev_info struct with a + macro. + + * Add trace2 counters to the region to clear skip worktree bits in a + sparse checkout. + + * Modernize test script to avoid "test -f" and friends. + + * Avoid calling 'cache_tree_update()' when doing so would be + redundant. + + * Update the credential-cache documentation to provide a more + realistic example. + + * Makefile comments updates and reordering to clarify knobs used to + choose SHA implementations. + + * A design document for sparse-checkout's future directions has been + added. + + * Teach chainlint.pl to annotate the original test definition instead + of the token stream. + + * "make coccicheck" is time consuming. It has been made to run more + incrementally. + + * `parse_object()` has been hardened to check for the existence of a + suspected blob object. + + * The build procedure has been adjusted to GNUmake version 4.4, which + made some changes to how pattern rule with multiple targets are + handled. + + +Fixes since v2.38 +----------------- + + * The codepath that reads from the index v4 had unaligned memory + accesses, which has been corrected. + + * Fix messages incorrectly marked for translation. + + * "git fsck" failed to release contents of tree objects already used + from the memory, which has been fixed. + + * "git clone" did not like to see the "--bare" and the "--origin" + options used together without a good reason. + + * "git remote rename" failed to rename a remote without fetch + refspec, which has been corrected. + + * Documentation on various Boolean GIT_* environment variables have + been clarified. + + * "git rebase -i" can mistakenly attempt to apply a fixup to a commit + itself, which has been corrected. + + * "git multi-pack-index repack/expire" used to repack unreachable + cruft into a new pack, which have been corrected. + + * In read-only repositories, "git merge-tree" tried to come up with a + merge result tree object, which it failed (which is not wrong) and + led to a segfault (which is bad), which has been corrected. + + * Force C locale while running tests around httpd to make sure we can + find expected error messages in the log. + + * Fix a logic in "mailinfo -b" that miscomputed the length of a + substring, which lead to an out-of-bounds access. + + * The codepath to sign learned to report errors when it fails to read + from "ssh-keygen". + + * Code clean-up that results in plugging a leak. + + * "GIT_EDITOR=: git branch --edit-description" resulted in failure, + which has been corrected. + + * The code to clean temporary object directories (used for + quarantine) tried to remove them inside its signal handler, which + was a no-no. + + * Update comment in the Makefile about the RUNTIME_PREFIX config knob. + + * Clarify that "the sentence after <area>: prefix does not begin with + a capital letter" rule applies only to the commit title. + + * "git branch --edit-description" on an unborn branch misleadingly + said that no such branch exists, which has been corrected. + + * Work around older clang that warns against C99 zero initialization + syntax for struct. + + * Giving "--invert-grep" and "--all-match" without "--grep" to the + "git log" command resulted in an attempt to access grep pattern + expression structure that has not been allocated, which has been + corrected. + (merge db84376f98 ab/grep-simplify-extended-expression later to maint). + + * "git diff rev^!" did not show combined diff to go to the rev from + its parents. + (merge a79c6b6081 rs/diff-caret-bang-with-parents later to maint). + + * Allow configuration files in "protected" scopes to include other + configuration files. + (merge ecec57b3c9 gc/bare-repo-discovery later to maint). + + * Give a bit more diversity to macOS CI by using sha1dc in one of the + jobs (the other one tests Apple Common Crypto). + (merge 1ad5c3df35 jc/ci-osx-with-sha1dc later to maint). + + * A bugfix with tracing support in midx codepath + (merge e9c3839944 tb/midx-bitmap-selection-fix later to maint). + + * When geometric repacking feature is in use together with the + --pack-kept-objects option, we lost packs marked with .keep files. + (merge 197443e80a tb/save-keep-pack-during-geometric-repack later to maint). + + * Move a global variable added as a hack during regression fixes to + its proper place in the API. + (merge 0b0ab95f17 ab/run-hook-api-cleanup later to maint). + + * Update to build procedure with VS using CMake/CTest. + (merge c858750b41 js/cmake-updates later to maint). + + * The short-help text shown by "git cmd -h" and the synopsis text + shown at the beginning of "git help cmd" have been made more + consistent. + + * When creating a multi-pack bitmap, remove per-pack bitmap files + unconditionally as they will never be consulted. + (merge 55d902cd61 tb/remove-unused-pack-bitmap later to maint). + + * Fix a longstanding syntax error in Git.pm error codepath. + + * "git diff --stat" etc. were invented back when everything was ASCII + and strlen() was a way to measure the display width of a string; + adjust them to compute the display width assuming UTF-8 pathnames. + (merge ce8529b2bb tb/diffstat-with-utf8-strwidth later to maint). + + * "git branch --edit-description" can exit with status -1 which is + not a good practice; it learned to use 1 as everybody else instead. + + * "git apply" limits its input to a bit less than 1 GiB. + + * Merging a branch with directory renames into a branch that changes + the directory to a symlink was mishandled by the ort merge + strategy, which has been corrected. + + * A bugfix to "git subtree" in its split and merge features. + + * Fix some bugs in the reflog messages when rebasing and changes the + reflog messages of "rebase --apply" to match "rebase --merge" with + the aim of making the reflog easier to parse. + + * "git rebase --keep-base" used to discard the commits that are + already cherry-picked to the upstream, even when "keep-base" meant + that the base, on top of which the history is being rebuilt, does + not yet include these cherry-picked commits. The --keep-base + option now implies --reapply-cherry-picks and --no-fork-point + options. + + * The way "git repack" created temporary files when it received a + signal was prone to deadlocking, which has been corrected. + + * Various tests exercising the transfer.credentialsInUrl + configuration are taught to avoid making requests which require + resolving localhost to reduce CI-flakiness. + + * The adjust_shared_perm() helper function learned to refrain from + setting the "g+s" bit on directories when it is not necessary. + + * "git archive" mistakenly complained twice about a missing + executable, which has been corrected. + + * Fix a bug where `git branch -d` did not work on an orphaned HEAD. + + * `git rebase --update-refs` would delete references when all + `update-ref` commands in the sequencer were removed, which has been + corrected. + + * Fix a regression in the bisect-helper which mistakenly treats + arguments to the command given to 'git bisect run' as arguments to + the helper. + + * Correct an error where `git rebase` would mistakenly use a branch or + tag named "refs/rewritten/xyz" when missing a rebase label. + + * Assorted fixes of parsing end-user input as integers. + (merge 14770cf0de pw/config-int-parse-fixes later to maint). + + * "git prune" may try to iterate over .git/objects/pack for trash + files to remove in it, and loudly fail when the directory is + missing, which is not necessary. The command has been taught to + ignore such a failure. + (merge 6974765352 ew/prune-with-missing-objects-pack later to maint). + + * Add one more candidate directory that may house httpd modules while + running tests. + (merge 1c7dc23d41 es/locate-httpd-module-location-in-test later to maint). + + * A handful of leaks in the line-log machinery have been plugged. + + * The format of a line in /proc/cpuinfo that describes a CPU on s390x + looked different from everybody else, and the code in chainlint.pl + failed to parse it. + (merge 1f51b77f4f ah/chainlint-cpuinfo-parse-fix later to maint). + + * Adjust the GitHub CI to newer ubuntu release. + (merge 0d3507f3e7 jx/ci-ubuntu-fix later to maint). + + * Other code cleanup, docfix, build fix, etc. + (merge 413bc6d20a ds/cmd-main-reorder later to maint). + (merge 8d2863e4ed nw/t1002-cleanup later to maint). + (merge 7c2dc122f9 rs/list-objects-filter-leakfix later to maint). + (merge 288fcb1c94 zk/push-use-bitmaps later to maint). + (merge 42db324c0f km/merge-recursive-typofix later to maint). |