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diff --git a/Documentation/RelNotes/2.51.0.adoc b/Documentation/RelNotes/2.51.0.adoc new file mode 100644 index 0000000000..f8adc2c5cf --- /dev/null +++ b/Documentation/RelNotes/2.51.0.adoc @@ -0,0 +1,335 @@ +Git v2.51 Release Notes +======================= + +UI, Workflows & Features +------------------------ + + * Userdiff patterns for the R language have been added. + + * Documentation for "git send-email" has been updated with a bit more + credential helper and OAuth information. + + * "git cat-file --batch" learns to understand %(objectmode) atom to + allow the caller to tell missing objects (due to repository + corruption) and submodules (whose commit objects are OK to be + missing) apart. + + * "git diff --no-index dirA dirB" can limit the comparison with + pathspec at the end of the command line, just like normal "git + diff". + + * "git subtree" (in contrib/) learned to grok GPG signing its commits. + + * "git whatchanged" that is longer to type than "git log --raw" + which is its modern rough equivalent has outlived its usefulness + more than 10 years ago. Plan to deprecate and remove it. + + * An interchange format for stash entries is defined, and subcommand + of "git stash" to import/export has been added. + + * "git merge/pull" has been taught the "--compact-summary" option to + use the compact-summary format, intead of diffstat, when showing + the summary of the incoming changes. + + * "git imap-send" has been broken for a long time, which has been + resurrected and then taught to talk OAuth2.0 etc. + + * Some error messages from "git imap-send" has been updated. + + * When "git daemon" sees a signal while attempting to accept() a new + client, instead of retrying, it skipped it by mistake, which has + been corrected. + + * The reftable ref backend has matured enough; Git 3.0 will make it + the default format in a newly created repositories by default. + + * "netrc" credential helper has been improved to understand textual + service names (like smtp) in addition to the numeric port numbers + (like 25). + + * Lift the limitation to use changed-path filter in "git log" so that + it can be used for a pathspec with multiple literal paths. + + * Clean up the way how signature on commit objects are exported to + and imported from fast-import stream. + + * Remove unsupported, unused, and unsupportable old option from "git + log". + + * Document recently added "git imap-send --list" with an example. + + * "git pull" learned to pay attention to pull.autostash configuration + variable, which overrides rebase/merge.autostash. + + * "git for-each-ref" learns "--start-after" option to help + applications that want to page its output. + + * "git switch" and "git restore" are declared to be no longer + experimental. + + * "git -c alias.foo=bar foo -h baz" reported "'foo' is aliased to + 'bar'" and then went on to run "git foo -h baz", which was + unexpected. Tighten the rule so that alias expansion is reported + only when "-h" is the sole option. + + +Performance, Internal Implementation, Development Support etc. +-------------------------------------------------------------- + + * "git pack-objects" learned to find delta bases from blobs at the + same path, using the --path-walk API. + + * CodingGuidelines update. + + * Add settings for Solaris 10 & 11. + + * Meson-based build/test framework now understands TAP output + generated by our tests. + + * "Do not explicitly initialize to zero" rule has been clarified in + the CodingGuidelines document. + + * A test helper "test_seq" function learned the "-f <fmt>" option, + which allowed us to simplify a lot of test scripts. + + * A lot of stale stuff has been removed from the contrib/ hierarchy. + + * "git push" and "git fetch" are taught to update refs in batches to + gain performance. + + * Some code paths in the "git prune" used to ignore passed in + repository object and used the_repository singleton instance + instead, which has been corrected. + + * Update ".clang-format" and ".editorconfig" to match our style guide + a bit better. + + * "make coccicheck" succeeds even when spatch made suggestions, which + has been updated to fail in such a case. + + * Code clean-up around object access API. + + * Define .precision to more canned parse-options type to avoid bugs + coming from using a variable with a wrong type to capture the + parsed values. + + * Flipping the default hash function to SHA-256 at Git 3.0 boundary + is planned. + + * Declare weather-balloon we raised for "bool" type 18 months ago a + success and officially allow using the type in our codebase. + + * GIT_TEST_INSTALLED was not honored in the recent topic related to + SHA256 hashes, which has been corrected. + + * The pop_most_recent_commit() function can have quite expensive + worst case performance characteristics, which has been optimized by + using prio-queue data structure. + + * Move structure definition from unrelated header file to where it + belongs. + + * To help our developers, document what C99 language features are + being considered for adoption, in addition to what past experiments + have already decided. + + * The reftable unit tests are now ported to the "clar" unit testing + framework. + + * Redefine where the multi-pack-index sits in the object subsystem, + which recently was restructured to allow multiple backends that + support a single object source that belongs to one repository. A + midx does span mulitple "object sources". + + * Reduce implicit assumption and dependence on the_repository in the + object-file subsystem. + + +Fixes since v2.50 +----------------- + +Unless otherwise noted, all the changes in 2.50.X maintenance track, +including security updates, are included in this release. + + * A memory-leak in an error code path has been plugged. + (merge 7082da85cb ly/commit-graph-graph-write-leakfix later to maint). + + * A memory-leak in an error code path has been plugged. + (merge aedebdb6b9 ly/fetch-pack-leakfix later to maint). + + * Some leftover references to documentation source files that no + longer exist, due to recent ".txt" -> ".adoc" renaming, have been + corrected. + (merge 3717a5775a jw/doc-txt-to-adoc-refs later to maint). + + * "git stash -p <pathspec>" improvements. + (merge 468817bab2 pw/stash-p-pathspec-fixes later to maint). + + * "git send-email" incremented its internal message counter when a + message was edited, which made logic that treats the first message + specially misbehave, which has been corrected. + (merge 2cc27b3501 ag/send-email-edit-threading-fix later to maint). + + * "git stash" recorded a wrong branch name when submodules are + present in the current checkout, which has been corrected. + (merge ffb36c64f2 kj/stash-onbranch-submodule-fix later to maint). + + * When asking to apply mailmap to both author and committer field + while showing a commit object, the field that appears later was not + correctly parsed and replaced, which has been corrected. + (merge abf94a283f sa/multi-mailmap-fix later to maint). + + * "git maintenance" lacked the care "git gc" had to avoid holding + onto the repository lock for too long during packing refs, which + has been remedied. + (merge 1b5074e614 ps/maintenance-ref-lock later to maint). + + * Avoid regexp_constraint and instead use comparison_constraint when + listing functions to exclude from application of coccinelle rules, + as spatch can be built with different regexp engine X-<. + (merge f2ad545813 jc/cocci-avoid-regexp-constraint later to maint). + + * Updating submodules from the upstream did not work well when + submodule's HEAD is detached, which has been improved. + (merge ca62f524c1 jk/submodule-remote-lookup-cleanup later to maint). + + * Remove unnecessary check from "git daemon" code. + (merge 0c856224d2 cb/daemon-fd-check-fix later to maint). + + * Use of sysctl() system call to learn the total RAM size used on + BSDs has been corrected. + (merge 781c1cf571 cb/total-ram-bsd-fix later to maint). + + * Drop FreeBSD 4 support and declare that we support only FreeBSD 12 + or later, which has memmem() supported. + (merge 0392f976a7 bs/config-mak-freebsd later to maint). + + * A diff-filter with negative-only specification like "git log + --diff-filter=d" did not trigger correctly, which has been fixed. + (merge 375ac087c5 jk/all-negative-diff-filter-fix later to maint). + + * A failure to open the index file for writing due to conflicting + access did not state what went wrong, which has been corrected. + (merge 9455397a5c hy/read-cache-lock-error-fix later to maint). + + * Tempfile removal fix in the codepath to sign commits with SSH keys. + (merge 4498127b04 re/ssh-sign-buffer-fix later to maint). + + * Code and test clean-up around string-list API. + (merge 6e5b26c3ff sj/string-list later to maint). + + * "git apply -N" should start from the current index and register + only new files, but it instead started from an empty index, which + has been corrected. + (merge 2b49d97fcb rp/apply-intent-to-add-fix later to maint). + + * Leakfix with a new and a bit invasive test on pack-bitmap files. + (merge bfd5522e98 ly/load-bitmap-leakfix later to maint). + + * "git fetch --prune" used to be O(n^2) expensive when there are many + refs, which has been corrected. + (merge 87d8d8c5d0 ph/fetch-prune-optim later to maint). + + * When a ref creation at refs/heads/foo/bar fails, the files backend + now removes refs/heads/foo/ if the directory is otherwise not used. + (merge a3a7f20516 ps/refs-files-remove-empty-parent later to maint). + + * "pack-objects" has been taught to avoid pointing into objects in + cruft packs from midx. + + * "git remote" now detects remote names that overlap with each other + (e.g., remote nickname "outer" and "outer/inner" are used at the + same time), as it will lead to overlapping remote-tracking + branches. + (merge a5a727c448 jk/remote-avoid-overlapping-names later to maint). + + * The gpg.program configuration variable, which names a pathname to + the (custom) GPG compatible program, can now be spelled with ~tilde + expansion. + (merge 7d275cd5c0 jb/gpg-program-variable-is-a-pathname later to maint). + + * Our <sane-ctype.h> header file relied on that the system-supplied + <ctype.h> header is not later included, which would override our + macro definitions, but "amazon linux" broke this assumption. Fix + this by preemptively including <ctype.h> near the beginning of + <sane-ctype.h> ourselves. + (merge 9d3b33125f ps/sane-ctype-workaround later to maint). + + * Clean-up compat/bswap.h mess. + (merge f4ac32c03a ss/compat-bswap-revamp later to maint). + + * Meson-based build did not handle libexecdir setting correctly, + which has been corrected. + (merge 056dbe8612 rj/meson-libexecdir-fix later to maint). + + * Document that we do not require "real" name when signing your + patches off. + (merge 1f0fed312a bc/contribution-under-non-real-names later to maint). + + * "git commit" that concludes a conflicted merge failed to notice and remove + existing comment added automatically (like "# Conflicts:") when the + core.commentstring is set to 'auto'. + (merge 92b7c7c9f5 ac/auto-comment-char-fix later to maint). + + * "git rebase -i" with bogus rebase.instructionFormat configuration + failed to produce the todo file after recording the state files, + leading to confused "git status"; this has been corrected. + (merge ade14bffd7 ow/rebase-verify-insn-fmt-before-initializing-state later to maint). + + * A few file descriptors left unclosed upon program completion in a + few test helper programs are now closed. + (merge 0f1b33815b hl/test-helper-fd-close later to maint). + + * Interactive prompt code did not correctly strip CRLF from the end + of line on Windows. + (merge 711a20827b js/prompt-crlf-fix later to maint). + + * The config API had a set of convenience wrapper functions that + implicitly use the_repository instance; they have been removed and + inlined at the calling sites. + + * "git add/etc -p" now honor the diff.context configuration variable, + and also they learn to honor the -U<n> command-line option. + (merge 2b3ae04011 lm/add-p-context later to maint). + + * The case where a new submodule takes a path where used to be a + completely different subproject is now dealt a bit better than + before. + (merge 5ed8c5b465 kj/renamed-submodule later to maint). + + * Other code cleanup, docfix, build fix, etc. + (merge b257adb571 lo/my-first-ow-doc-update later to maint). + (merge 8b34b6a220 ly/sequencer-update-squash-is-fixup-only later to maint). + (merge 5dceb8bd05 ly/do-not-localize-bug-messages later to maint). + (merge 61372dd613 ly/commit-buffer-reencode-leakfix later to maint). + (merge 81cd1eef7d ly/pack-bitmap-root-leakfix later to maint). + (merge bfc9f9cc64 ly/submodule-update-failure-leakfix later to maint). + (merge 65dff89c6b ma/doc-diff-cc-headers later to maint). + (merge efb61591ee jm/bundle-uri-debug-output-to-fp later to maint). + (merge a3d278bb64 ly/prepare-show-merge-leakfix later to maint). + (merge 1fde1c5daf ac/preload-index-wo-the-repository later to maint). + (merge 855cfc65ae rm/t2400-modernize later to maint). + (merge 2939494284 ly/run-builtin-use-passed-in-repo later to maint). + (merge ff73f375bb jg/mailinfo-leakfix later to maint). + (merge 996f14c02b jj/doc-branch-markup-fix later to maint). + (merge 1e77de1864 cb/ci-freebsd-update-to-14.3 later to maint). + (merge b0e9d25865 jk/fix-leak-send-pack later to maint). + (merge f3a9558c8c bs/remote-helpers-doc-markup-fix later to maint). + (merge c4e9775c60 kh/doc-config-subcommands later to maint). + (merge de404249ab ps/perlless-test-fixes later to maint). + (merge 953049eed8 ts/merge-orig-head-doc-fix later to maint). + (merge 0c83bbc704 rj/freebsd-sysinfo-build-fix later to maint). + (merge ad7780b38f ps/doc-pack-refs-auto-with-files-backend-fix later to maint). + (merge f4fa8a3687 rh/doc-glob-pathspec-fix later to maint). + (merge b27be108c8 ja/doc-git-log-markup later to maint). + (merge 14d7583beb pw/config-kvi-remove-path later to maint). + (merge f31abb421d jc/do-not-scan-argv-without-parsing later to maint). + (merge 26552cb62a jk/unleak-reflog-expire-entry later to maint). + (merge 339d95fda9 jc/ci-print-test-failures-fix later to maint). + (merge 8c3add51a8 cb/meson-avoid-broken-macos-pcre2 later to maint). + (merge 5247da07b8 ps/meson-clar-decls-fix later to maint). + (merge f3ef347bb2 ch/t7450-recursive-clone-test-fix later to maint). + (merge 4ac3302a1a jc/doc-release-vs-clear later to maint). + (merge 3bdd897413 ms/meson-with-ancient-git-wo-ls-files-dedup later to maint). + (merge cca758d324 kh/doc-fast-import-historical later to maint). + (merge 9b0781196a jc/test-hashmap-is-still-here later to maint). |