Documentation/RelNotes/2.54.0.adoc

Git v2.54 Release Notes
=======================

UI, Workflows & Features
------------------------

 * "git add -p" and friends note what the current status of the hunk
   being shown is.

 * "git history" history rewriting (experimental) command has been
   added.


 * "git replay" is taught to drop commits that become empty (not the
   ones that are empty in the original).

 * The help text and the documentation for the "--expire" option of
   "git worktree [list|prune]" have been improved.

 * When "git show-index" is run outside a repository, it silently
   defaults to SHA-1; the tool now warns when this happens.

 * "git merge-file" can be run outside a repository, but it ignored
   all configuration, even the per-user ones.  The command now uses
   available configuration files to find its customization.

 * "auto filter" logic for large-object promisor remote.

 * "git rev-list" and friends learn "--maximal-only" to show only the
   commits that are not reachable by other commits.

 * Command line completion (in contrib/) update for
   "stash import/export".


Performance, Internal Implementation, Development Support etc.
--------------------------------------------------------------

 * Avoid local submodule repository directory paths overlapping with
   each other by encoding submodule names before using them as path
   components.

 * The string_list API gains a new helper, string_list_sort_u(), and
   new unit tests to extend coverage.

 * Improve set-up time of a perf test.

 * ISO C23 redefines strchr and friends that tradiotionally took
   a const pointer and returned a non-const pointer derived from it to
   preserve constness (i.e., if you ask for a substring in a const
   string, you get a const pointer to the substring).  Update code
   paths that used non-const pointer to receive their results that did
   not have to be non-const to adjust.

 * Rename three functions around the commit_list data structure.

 * Transaction to create objects (or not) is currently tied to the
   repository, but in the future a repository can have multiple object
   sources, which may have different transaction mechanisms.  Make the
   odb transaction API per object source.

 * "git merge-ours" is taught to work better in a sparse checkout.

 * Allow recording process ID of the process that holds the lock next
   to a lockfile for diagnosis.

 * Reduce dependency on the_repository of xdiff-interface layer.

 * Code clean-up to use the commit_stack API.

 * "git diff --anchored=<text>" has been optimized.

 * A CodingGuidelines update.

 * Add process ancestry data to trace2 on macOS to match what we
   already do on Linux and Windows.  Also adjust the way Windows
   implementation reports this information to match the other two.


Fixes since v2.53
-----------------

 * HTTP transport failed to authenticate in some code paths, which has
   been corrected.
   (merge ed0f7a62f7 ap/http-probe-rpc-use-auth later to maint).

 * The computation of column width made by "git diff --stat" was
   confused when pathnames contain non-ASCII characters.
   (merge 04f5d95ef7 lp/diff-stat-utf8-display-width-fix later to maint).

 * The "-z" and "--max-depth" documentation (and implementation of
   "-z") in the "git last-modified" command have been updated.
   (merge 9dcc09bed1 tc/last-modified-options-cleanup later to maint).

 * A handful of code paths that started using batched ref update API
   (after Git 2.51 or so) lost detailed error output, which have been
   corrected.
   (merge eff9299eac kn/ref-batch-output-error-reporting-fix later to maint).

 * "git blame --ignore-revs=... --color-lines" did not account for
   ignored revisions passing blame to the same commit an adjacent line
   gets blamed for.
   (merge d519082d4e rs/blame-ignore-colors-fix later to maint).

 * Coccinelle rules update.
   (merge 60614838a4 tc/memzero-array later to maint).

 * Giving "git last-modified" a tree (not a commit-ish) died an
   uncontrolled death, which has been corrected.
   (merge 525ef52301 tc/last-modified-not-a-tree later to maint).

 * Test contrib/ things in CI to catch breakages before they enter the
   "next" branch.
   (merge c591c3ceff jc/ci-test-contrib-too later to maint).

 * A handful of documentation pages have been modernized to use the
   "synopsis" style.
   (merge a34d1d53a6 ja/doc-synopsis-style-even-more later to maint).

 * Small clean-up of xdiff library to remove unnecessary data
   duplication.
   (merge 5086213bd2 pw/xdiff-cleanups later to maint).

 * Update sample commit-msg hook to complain when a log message has
   material mailinfo considers the end of log message in the middle.
   (merge 83804c361b pw/commit-msg-sample-hook later to maint).

 * "git pack-objects --stdin-packs" with "--exclude-promisor-objects"
   fetched objects that are promised, which was not wanted.  This has
   been fixed.
   (merge f4eff7116d ps/pack-concat-wo-backfill later to maint).

 * Other code cleanup, docfix, build fix, etc.
   (merge d79fff4a11 jk/remote-tracking-ref-leakfix later to maint).
   (merge 7a747f972d dd/t5403-modernise later to maint).
   (merge 81021871ea sp/myfirstcontribution-include-update later to maint).
   (merge 49223593fd ac/sparse-checkout-string-list-cleanup later to maint).
   (merge a824421d36 sp/t5500-cleanup later to maint).
   (merge df1c5d7ed7 kh/doc-shortlog-fix later to maint).
   (merge 2d45507f15 am/doc-github-contributiong-link-to-submittingpatches later to maint).
   (merge 68060b9262 hs/t9160-test-paths later to maint).
   (merge 486386c687 cs/subtree-reftable-testfix later to maint).
   (merge 0728012c53 jc/diff-highlight-main-master-testfix later to maint).
   (merge 831989ef38 mc/doc-send-email-signed-off-by-cc later to maint).
   (merge c44b3f3203 sd/doc-my1c-api-config-reference-fix later to maint).
   (merge 6c21e53bad rs/version-wo-the-repository later to maint).
   (merge 10c68d2577 rs/clean-includes later to maint).
   (merge 168d575719 bk/t2003-modernise later to maint).
   (merge 6bfef81c9a kh/doc-rerere-options-xref later to maint).
   (merge aaf3cc3d8d sd/t7003-test-path-is-helpers later to maint).
   (merge 2668b6bdc4 jc/doc-rerere-update later to maint).
   (merge 2f99f50f2d jc/doc-cg-c-comment later to maint).
   (merge a454cdca42 kh/doc-am-format-sendmail later to maint).