348 lines
14 KiB
Text
348 lines
14 KiB
Text
Git 2.23 Release Notes
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======================
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Updates since v2.22
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-------------------
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Backward compatibility note
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* The "--base" option of "format-patch" computed the patch-ids for
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prerequisite patches in an unstable way, which has been updated to
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compute in a way that is compatible with "git patch-id --stable".
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* The "git log" command by default behaves as if the --mailmap option
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was given.
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UI, Workflows & Features
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* The "git fast-export/import" pair has been taught to handle commits
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with log messages in encoding other than UTF-8 better.
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* In recent versions of Git, per-worktree refs are exposed in
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refs/worktrees/<wtname>/ hierarchy, which means that worktree names
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must be a valid refname component. The code now sanitizes the names
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given to worktrees, to make sure these refs are well-formed.
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* "git merge" learned "--quit" option that cleans up the in-progress
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merge while leaving the working tree and the index still in a mess.
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* "git format-patch" learns a configuration to set the default for
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its --notes=<ref> option.
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* The code to show args with potential typo that cannot be
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interpreted as a commit-ish has been improved.
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* "git clone --recurse-submodules" learned to set up the submodules
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to ignore commit object names recorded in the superproject gitlink
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and instead use the commits that happen to be at the tip of the
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remote-tracking branches from the get-go, by passing the new
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"--remote-submodules" option.
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* The pattern "git diff/grep" use to extract funcname and words
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boundary for Matlab has been extend to cover Octave, which is more
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or less equivalent.
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* "git help git" was hard to discover (well, at least for some
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people).
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* The pattern "git diff/grep" use to extract funcname and words
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boundary for Rust has been added.
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* "git status" can be told a non-standard default value for the
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"--[no-]ahead-behind" option with a new configuration variable
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status.aheadBehind.
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* "git fetch" and "git pull" reports when a fetch results in
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non-fast-forward updates to let the user notice unusual situation.
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The commands learned "--no-show-forced-updates" option to disable
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this safety feature.
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* Two new commands "git switch" and "git restore" are introduced to
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split "checking out a branch to work on advancing its history" and
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"checking out paths out of the index and/or a tree-ish to work on
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advancing the current history" out of the single "git checkout"
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command.
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* "git branch --list" learned to always output the detached HEAD as
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the first item (when the HEAD is detached, of course), regardless
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of the locale.
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* The conditional inclusion mechanism learned to base the choice on
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the branch the HEAD currently is on.
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* "git rev-list --objects" learned the "--no-object-names" option to
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squelch the path to the object that is used as a grouping hint for
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pack-objects.
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* A new tag.gpgSign configuration variable turns "git tag -a" into
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"git tag -s".
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* "git multi-pack-index" learned expire and repack subcommands.
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* "git blame" learned to "ignore" commits in the history, whose
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effects (as well as their presence) get ignored.
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* "git cherry-pick/revert" learned a new "--skip" action.
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* The tips of refs from the alternate object store can be used as
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starting point for reachability computation now.
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* Extra blank lines in "git status" output have been reduced.
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* The commits in a repository can be described by multiple
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commit-graph files now, which allows the commit-graph files to be
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updated incrementally.
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* "git range-diff" output has been tweaked for easier identification
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of which part of what file the patch shown is about.
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Performance, Internal Implementation, Development Support etc.
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* Update supporting parts of "git rebase" to remove code that should
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no longer be used.
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* Developer support to emulate unsatisfied prerequisites in tests to
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ensure that the remainder of the tests still succeeds when tests
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with prerequisites are skipped.
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* "git update-server-info" learned not to rewrite the file with the
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same contents.
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* The way of specifying the path to find dynamic libraries at runtime
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has been simplified. The old default to pass -R/path/to/dir has been
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replaced with the new default to pass -Wl,-rpath,/path/to/dir,
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which is the more recent GCC uses. Those who need to build with an
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old GCC can still use "CC_LD_DYNPATH=-R"
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* Prepare use of reachability index in topological walker that works
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on a range (A..B).
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* A new tutorial targeting specifically aspiring git-core
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developers has been added.
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* Auto-detect how to tell HP-UX aCC where to use dynamically linked
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libraries from at runtime.
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* "git mergetool" and its tests now spawn fewer subprocesses.
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* Dev support update to help tracing out tests.
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* Support to build with MSVC has been updated.
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* "git fetch" that grabs from a group of remotes learned to run the
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auto-gc only once at the very end.
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* A handful of Windows build patches have been upstreamed.
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* The code to read state files used by the sequencer machinery for
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"git status" has been made more robust against a corrupt or stale
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state files.
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* "git for-each-ref" with multiple patterns have been optimized.
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* The tree-walk API learned to pass an in-core repository
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instance throughout more codepaths.
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* When one step in multi step cherry-pick or revert is reset or
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committed, the command line prompt script failed to notice the
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current status, which has been improved.
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* Many GIT_TEST_* environment variables control various aspects of
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how our tests are run, but a few followed "non-empty is true, empty
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or unset is false" while others followed the usual "there are a few
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ways to spell true, like yes, on, etc., and also ways to spell
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false, like no, off, etc." convention.
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* Adjust the dir-iterator API and apply it to the local clone
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optimization codepath.
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* We have been trying out a few language features outside c89; the
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coding guidelines document did not talk about them and instead had
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a blanket ban against them.
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* A test helper has been introduced to optimize preparation of test
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repositories with many simple commits, and a handful of test
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scripts have been updated to use it.
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Fixes since v2.22
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-----------------
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* A relative pathname given to "git init --template=<path> <repo>"
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ought to be relative to the directory "git init" gets invoked in,
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but it instead was made relative to the repository, which has been
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corrected.
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* "git worktree add" used to fail when another worktree connected to
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the same repository was corrupt, which has been corrected.
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* The ownership rule for the file descriptor to fast-import remote
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backend was mixed up, leading to an unrelated file descriptor getting
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closed, which has been fixed.
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* A "merge -c" instruction during "git rebase --rebase-merges" should
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give the user a chance to edit the log message, even when there is
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otherwise no need to create a new merge and replace the existing
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one (i.e. fast-forward instead), but did not. Which has been
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corrected.
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* Code cleanup and futureproof.
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* More parameter validation.
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* "git update-server-info" used to leave stale packfiles in its
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output, which has been corrected.
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* The server side support for "git fetch" used to show incorrect
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value for the HEAD symbolic ref when the namespace feature is in
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use, which has been corrected.
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* "git am -i --resolved" segfaulted after trying to see a commit as
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if it were a tree, which has been corrected.
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* "git bundle verify" needs to see if prerequisite objects exist in
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the receiving repository, but the command did not check if we are
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in a repository upfront, which has been corrected.
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* "git merge --squash" is designed to update the working tree and the
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index without creating the commit, and this cannot be countermanded
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by adding the "--commit" option; the command now refuses to work
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when both options are given.
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* The data collected by fsmonitor was not properly written back to
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the on-disk index file, breaking t7519 tests occasionally, which
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has been corrected.
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* Update to Unicode 12.1 width table.
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* The command line to invoke a "git cat-file" command from inside
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"git p4" was not properly quoted to protect a caret and running a
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broken command on Windows, which has been corrected.
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* "git request-pull" learned to warn when the ref we ask them to pull
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from in the local repository and in the published repository are
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different.
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* When creating a partial clone, the object filtering criteria is
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recorded for the origin of the clone, but this incorrectly used a
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hardcoded name "origin" to name that remote; it has been corrected
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to honor the "--origin <name>" option.
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* "git fetch" into a lazy clone forgot to fetch base objects that are
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necessary to complete delta in a thin packfile, which has been
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corrected.
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* The filter_data used in the list-objects-filter (which manages a
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lazily sparse clone repository) did not use the dynamic array API
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correctly---'nr' is supposed to point at one past the last element
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of the array in use. This has been corrected.
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* The description about slashes in gitignore patterns (used to
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indicate things like "anchored to this level only" and "only
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matches directories") has been revamped.
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* The URL decoding code has been updated to avoid going past the end
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of the string while parsing %-<hex>-<hex> sequence.
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* The list of for-each like macros used by clang-format has been
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updated.
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* "git branch --list" learned to show branches that are checked out
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in other worktrees connected to the same repository prefixed with
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'+', similar to the way the currently checked out branch is shown
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with '*' in front.
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(merge 6e9381469e nb/branch-show-other-worktrees-head later to maint).
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* Code restructuring during 2.20 period broke fetching tags via
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"import" based transports.
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* The commit-graph file is now part of the "files that the runtime
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may keep open file descriptors on, all of which would need to be
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closed when done with the object store", and the file descriptor to
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an existing commit-graph file now is closed before "gc" finalizes a
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new instance to replace it.
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* "git checkout -p" needs to selectively apply a patch in reverse,
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which did not work well.
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* Code clean-up to avoid signed integer wraparounds during binary search.
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* "git interpret-trailers" always treated '#' as the comment
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character, regardless of core.commentChar setting, which has been
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corrected.
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* "git stash show 23" used to work, but no more after getting
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rewritten in C; this regression has been corrected.
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* "git rebase --abort" used to leave refs/rewritten/ when concluding
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"git rebase -r", which has been corrected.
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* An incorrect list of options was cached after command line
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completion failed (e.g. trying to complete a command that requires
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a repository outside one), which has been corrected.
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* The code to parse scaled numbers out of configuration files has
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been made more robust and also easier to follow.
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* The codepath to compute delta islands used to spew progress output
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without giving the callers any way to squelch it, which has been
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fixed.
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* Protocol capabilities that go over wire should never be translated,
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but it was incorrectly marked for translation, which has been
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corrected. The output of protocol capabilities for debugging has
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been tweaked a bit.
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* Use "Erase in Line" CSI sequence that is already used in the editor
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support to clear cruft in the progress output.
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* "git submodule foreach" did not protect command line options passed
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to the command to be run in each submodule correctly, when the
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"--recursive" option was in use.
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* The configuration variable rebase.rescheduleFailedExec should be
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effective only while running an interactive rebase and should not
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affect anything when running a non-interactive one, which was not
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the case. This has been corrected.
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* The "git clone" documentation refers to command line options in its
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description in the short form; they have been replaced with long
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forms to make them more recognisable.
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* Generation of pack bitmaps are now disabled when .keep files exist,
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as these are mutually exclusive features.
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(merge 7328482253 ew/repack-with-bitmaps-by-default later to maint).
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* "git rm" to resolve a conflicted path leaked an internal message
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"needs merge" before actually removing the path, which was
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confusing. This has been corrected.
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* "git stash --keep-index" did not work correctly on paths that have
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been removed, which has been fixed.
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(merge b932f6a5e8 tg/stash-keep-index-with-removed-paths later to maint).
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* Window 7 update ;-)
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* A codepath that reads from GPG for signed object verification read
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past the end of allocated buffer, which has been fixed.
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* "git clean" silently skipped a path when it cannot lstat() it; now
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it gives a warning.
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* "git push --atomic" that goes over the transport-helper (namely,
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the smart http transport) failed to prevent refs to be pushed when
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it can locally tell that one of the ref update will fail without
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having to consult the other end, which has been corrected.
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* The internal diff machinery can be made to read out of bounds while
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looking for --function-context line in a corner case, which has been
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corrected.
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(merge b777f3fd61 jk/xdiff-clamp-funcname-context-index later to maint).
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* Other code cleanup, docfix, build fix, etc.
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(merge fbec05c210 cc/test-oidmap later to maint).
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(merge 7a06fb038c jk/no-system-includes-in-dot-c later to maint).
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(merge 81ed2b405c cb/xdiff-no-system-includes-in-dot-c later to maint).
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(merge d61e6ce1dd sg/fsck-config-in-doc later to maint).
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