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diff --git a/Documentation/RelNotes/2.42.0.txt b/Documentation/RelNotes/2.42.0.txt new file mode 100644 index 0000000000..0f1897ad5f --- /dev/null +++ b/Documentation/RelNotes/2.42.0.txt @@ -0,0 +1,329 @@ +Git v2.42 Release Notes +======================= + +UI, Workflows & Features + + * "git pack-refs" learns "--include" and "--exclude" to tweak the ref + hierarchy to be packed using pattern matching. + + * 'git worktree add' learned how to create a worktree based on an + orphaned branch with `--orphan`. + + * "git pack-objects" learned to invoke a new hook program that + enumerates extra objects to be used as anchoring points to keep + otherwise unreachable objects in cruft packs. + + * Add more "git var" for toolsmiths to learn various locations Git is + configured with either via the configuration or hard-coded defaults. + + * 'git notes append' was taught '--separator' to specify string to insert + between paragraphs. + + * The "git for-each-ref" family of commands learned placeholders + related to GPG signature verification. + + * "git diff --no-index" learned to read from named pipes as if they + were regular files, to allow "git diff <(process) <(substitution)" + some shells support. + + * Help newbies by suggesting that there are cases where force-pushing + is a valid and sensible thing to update a branch at a remote + repository, rather than reconciling with merge/rebase. + + * "git blame --contents=file" has been taught to work in a bare + repository. + + * "git branch -f X" to repoint the branch X said that X was "checked + out" in another worktree, even when branch X was not and instead + being bisected or rebased. The message was reworded to say the + branch was "in use". + + * Tone down the warning on SHA-256 repositories being an experimental + curiosity. We do not have support for them to interoperate with + traditional SHA-1 repositories, but at this point, we do not plan + to make breaking changes to SHA-256 repositories and there is no + longer need for such a strongly phrased warning. + + +Performance, Internal Implementation, Development Support etc. + + * "git diff-tree" has been taught to take advantage of the + sparse-index feature. + + * Clang's sanitizer implementation seems to work better than GCC's. + (merge d88d727143 jk/ci-use-clang-for-sanitizer-jobs later to maint). + + * The object traversal using reachability bitmap done by + "pack-object" has been tweaked to take advantage of the fact that + using "boundary" commits as representative of all the uninteresting + ones can save quite a lot of object enumeration. + + * discover_git_directory() no longer touches the_repository. + + * "git worktree" learned to work better with sparse index feature. + + * When the external merge driver is killed by a signal, its output + should not be trusted as a resolution with conflicts that is + proposed by the driver, but the code did. + + * The set-up code for the get_revision() API now allows feeding + options like --all and --not in the --stdin mode. + + * Move functions that are not about pure string manipulation out of + strbuf.[ch] + + * "imap-send" codepaths got cleaned up to get rid of unused + parameters. + + * Enumerating refs in the packed-refs file, while excluding refs that + match certain patterns, has been optimized. + + * Mark-up unused parameters in the code so that we can eventually + enable -Wunused-parameter by default. + + * Instead of inventing a custom counter variables for debugging, + use existing trace2 facility in the fsync customization codepath. + + * "git branch --list --format=<format>" and friends are taught + a new "%(describe)" placeholder. + + * Clarify how to choose the starting point for a new topic in + developer guidance document. + + * The implementation of "get_sha1_hex()" that reads a hexadecimal + string that spells a full object name has been extended to cope + with any hash function used in the repository, but the "sha1" in + its name survived. Rename it to get_hash_hex(), a name that is + more consistent within its friends like get_hash_hex_algop(). + + * Command line parser fix, and a small parse-options API update. + + +Fixes since v2.41 +----------------- + + * "git tag" learned to leave the "$GIT_DIR/TAG_EDITMSG" file when the + command failed, so that the user can salvage what they typed. + (merge 08c12ec1d0 kh/keep-tag-editmsg-upon-failure later to maint). + + * The "-s" (silent, squelch) option of the "diff" family of commands + did not interact with other options that specify the output format + well. This has been cleaned up so that it will clear all the + formatting options given before. + (merge 9d484b92ed jc/diff-s-with-other-options later to maint). + + * Update documentation regarding Coccinelle patches. + (merge 3bd0097cfc gc/doc-cocci-updates later to maint). + + * Some atoms that can be used in "--format=<format>" for "git ls-tree" + were not supported by "git ls-files", even though they were relevant + in the context of the latter. + (merge 4d28c4f75f zh/ls-files-format-atoms later to maint). + + * Document more pseudo-refs and teach the command line completion + machinery to complete AUTO_MERGE. + (merge 982ff3a649 pb/complete-and-document-auto-merge-and-friends later to maint). + + * "git submodule" code trusted the data coming from the config (and + the in-tree .gitmodules file) too much without validating, leading + to NULL dereference if the user mucks with a repository (e.g. + submodule.<name>.url is removed). This has been corrected. + (merge fbc806acd1 tb/submodule-null-deref-fix later to maint). + + * The value of config.worktree is per-repository, but has been kept + in a singleton global variable per process. This has been OK as + most Git operations interacted with a single repository at a time, + but not right for operations like recursive "grep" that want to + access multiple repositories from a single process without forking. + + The global variable has been eliminated and made into a member in + the per-repository data structure. + (merge 3867f6d650 vd/worktree-config-is-per-repository later to maint). + + * "git [-c log.follow=true] log [--follow] ':(glob)f**'" used to barf. + (merge 8260bc5902 jk/log-follow-with-non-literal-pathspec later to maint). + + * Introduce a mechanism to disable replace refs globally and per + repository. + (merge 9c7d1b057f ds/disable-replace-refs later to maint). + + * "git cat-file --batch" and friends learned "-Z" that uses NUL + delimiter for both input and output. + (merge f79e18849b ps/cat-file-null-output later to maint). + + * The reimplemented "git add -i" did not honor color.ui configuration. + (merge 6f74648cea ds/add-i-color-configuration-fix later to maint). + + * Compilation fix for platforms without D_TYPE in struct dirent. + (merge 03bf92b9bf as/dtype-compilation-fix later to maint). + + * Suggest to refrain from using hex literals that are non-portable + when writing printf(1) format strings. + (merge f0b68f0546 jt/doc-use-octal-with-printf later to maint). + + * Simplify error message when run-command fails to start a command. + (merge 6d224ac286 rs/run-command-exec-error-on-noent later to maint). + + * Gracefully deal with a stale MIDX file that lists a packfile that + no longer exists. + (merge 06f3867865 tb/open-midx-bitmap-fallback later to maint). + + * Even when diff.ignoreSubmodules tells us to ignore submodule + changes, "git commit" with an index that already records changes to + submodules should include the submodule changes in the resulting + commit, but it did not. + (merge 5768478edc js/defeat-ignore-submodules-config-with-explicit-addition later to maint). + + * When "git commit --trailer=..." invokes the interpret-trailers + machinery, it knows what it feeds to interpret-trailers is a full + log message without any patch, but failed to express that by + passing the "--no-divider" option, which has been corrected. + (merge be3d654343 jk/commit-use-no-divider-with-interpret-trailers later to maint). + + * Avoid breakage of "git pack-objects --cruft" due to inconsistency + between the way the code enumerates packfiles in the repository. + (merge 73320e49ad tb/collect-pack-filenames-fix later to maint). + + * We create .pack and then .idx, we consider only packfiles that have + .idx usable (those with only .pack are not ready yet), so we should + remove .idx before removing .pack for consistency. + (merge 0dd1324a73 ds/remove-idx-before-pack later to maint). + + * Partially revert a sanity check that the rest of the config code + was not ready, to avoid triggering it in a corner case. + (merge a53f43f900 gc/config-partial-submodule-kvi-fix later to maint). + + * "git apply" punts when it is fed too large a patch input; the error + message it gives when it happens has been clarified. + (merge 42612e18d2 pw/apply-too-large later to maint). + + * During a cherry-pick or revert session that works on multiple + commits, "git status" did not give correct information, which has + been corrected. + (merge a096a889f4 jk/cherry-pick-revert-status later to maint). + + * A few places failed to differentiate the case where the index is + truly empty (nothing added) and we haven't yet read from the + on-disk index file, which have been corrected. + (merge 2ee045eea1 js/empty-index-fixes later to maint). + + * "git bugreport" tests did not test what it wanted to test, which + has been corrected. + (merge 1aa92b8500 ma/t0091-fixup later to maint). + + * Code snippets in a tutorial document no longer compiled after + recent header shuffling, which have been corrected. + (merge bbd7c7b7c0 vd/adjust-mfow-doc-to-updated-headers later to maint). + + * "git ls-files '(attr:X)D/'" that triggers the common prefix + optimization codepath failed to read from "D/.gitattributes", + which has been corrected. + (merge f4a8fde057 jc/pathspec-match-with-common-prefix later to maint). + + * "git fsck --no-progress" still spewed noise from the commit-graph + subsystem, which has been corrected. + (merge 9281cd07f0 tb/fsck-no-progress later to maint). + + * Various offset computation in the code that accesses the packfiles + and other data in the object layer has been hardened against + arithmetic overflow, especially on 32-bit systems. + (merge 9a25cad7e0 tb/object-access-overflow-protection later to maint). + + * Names of MinGW header files are spelled in mixed case in some + source files, but the build host can be using case sensitive + filesystem with header files with their name spelled in all + lowercase. + (merge 4a53d0d0bc mh/mingw-case-sensitive-build later to maint). + + * Update message mark-up for i18n in "git bundle". + (merge bbb6acd998 dk/bundle-i18n-more later to maint). + + * "git tag --list --points-at X" showed tags that directly refers to + object X, but did not list a tag that points at such a tag, which + has been corrected. + + * "./configure --with-expat=no" did not work as a way to refuse use + of the expat library on a system with the library installed, which + has been corrected. + (merge fb8f7269c2 ah/autoconf-fixes later to maint). + + * When the user edits "rebase -i" todo file so that it starts with a + "fixup", which would make it invalid, the command truncated the + rest of the file before giving an error and returning the control + back to the user. Stop truncating to make it easier to correct + such a malformed todo file. + (merge 9645a087c2 ah/sequencer-rewrite-todo-fix later to maint). + + * Rewrite the description of giving a custom command to the + submodule.<name>.update configuration variable. + (merge 7cebc5bd78 pv/doc-submodule-update-settings later to maint). + + * Adjust to OpenSSL 3+, which deprecates its SHA-1 functions based on + its traditional API, by using its EVP API instead. + (merge bda9c12073 ew/hash-with-openssl-evp later to maint). + + * Exclude "." from the set of characters to be removed from the + beginning and the end of the human-readable name. + (merge 1c04cb0744 bc/ident-dot-is-no-longer-crud-letter later to maint). + + * "git bisect visualize" stopped running "gitk" on Git for Windows + when the command was reimplemented in C around Git 2.34 timeframe. + This has been corrected. + (merge fff1594fa7 ma/locate-in-path-for-windows later to maint). + + * "git rebase -i" with a series of squash/fixup, when one of the + steps stopped in conflicts and ended up getting skipped, did not + handle the accumulated commit log messages, which has been + corrected. + (merge 6ce7afe163 pw/rebase-skip-commit-message-fix later to maint). + + * Adjust to newer Term::ReadLine to prevent it from breaking + the interactive prompt code in send-email. + (merge c016726c2d jk/send-email-with-new-readline later to maint). + + * Windows updates. + (merge 0050f8e401 ds/maintenance-on-windows-fix later to maint). + + * Correct use of lstat() that assumed a failing call would not + clobber the statbuf. + (merge 72695d8214 st/mv-lstat-fix later to maint). + + * Other code cleanup, docfix, build fix, etc. + (merge 51f9d2e563 sa/doc-ls-remote later to maint). + (merge c6d26a9dda jk/format-patch-message-id-unleak later to maint). + (merge f7e063f326 ps/fetch-cleanups later to maint). + (merge e4cf013468 tl/quote-problematic-arg-for-clarity later to maint). + (merge 20025fdfc7 tz/test-ssh-verifytime-fix later to maint). + (merge e48a21df65 tz/test-fix-pthreads-prereq later to maint). + (merge 68b51172e3 mh/commit-reach-get-reachable-plug-leak later to maint). + (merge aeee1408ce kh/use-default-notes-doc later to maint). + (merge 3b8724bce6 jc/test-modernization later to maint). + (merge 447a3b7331 jc/test-modernization-2 later to maint). + (merge d57fa7fc73 la/doc-interpret-trailers later to maint). + (merge 548afb0d9a la/docs-typofixes later to maint). + (merge 3744ffcbcd rs/doc-ls-tree-hex-literal later to maint). + (merge 6c26da8404 mh/credential-erase-improvements later to maint). + (merge 78e56cff69 tz/lib-gpg-prereq-fix later to maint). + (merge 80d32e84b5 rj/leakfixes later to maint). + (merge 0a868031ed pb/complete-diff-options later to maint). + (merge d4f28279ad jc/doc-hash-object-types later to maint). + (merge 1876a5ae15 ks/t4205-test-describe-with-abbrev-fix later to maint). + (merge 6e6a529b57 jk/fsck-indices-in-worktrees later to maint). + (merge 3e81b896f7 rs/packet-length-simplify later to maint). + (merge 4c9cb51fe7 mh/doc-credential-helpers later to maint). + (merge 3437f549dd jr/gitignore-doc-example-markup later to maint). + (merge 947ebd62a0 jc/am-parseopt-fix later to maint). + (merge e12cb98e1e jc/branch-parseopt-fix later to maint). + (merge d6f598e443 jc/gitignore-doc-pattern-markup later to maint). + (merge a2dad4868b jc/transport-parseopt-fix later to maint). + (merge 68cbb20e73 jc/parse-options-show-branch later to maint). + (merge 3821eb6c3d jc/parse-options-reset later to maint). + (merge c48af99a3e bb/trace2-comment-fix later to maint). + (merge c95ae3ff9c rs/describe-parseopt-fix later to maint). + (merge 36f76d2a25 rs/pack-objects-parseopt-fix later to maint). + (merge 30c8c55cbf jc/tree-walk-drop-base-offset later to maint). + (merge d089a06421 rs/bundle-parseopt-cleanup later to maint). + (merge 823839bda1 ew/sha256-gcrypt-leak-fixes later to maint). + (merge a5c01603b3 bc/ignore-clangd-cache later to maint). + (merge 12009a182b js/allow-t4000-to-be-indented-with-spaces later to maint). + (merge b3dcd24b8a jc/send-email-pre-process-fix later to maint). |