343 lines
14 KiB
Plaintext
343 lines
14 KiB
Plaintext
Git v2.47 Release Notes
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=======================
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UI, Workflows & Features
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------------------------
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* Many Porcelain commands that internally use the merge machinery
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were taught to consistently honor the diff.algorithm configuration.
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* A few descriptions in "git show-ref -h" have been clarified.
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* A 'P' command to "git add -p" that passes the patch hunk to the
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pager has been added.
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* "git grep -W" omits blank lines that follow the found function at
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the end of the file, just like it omits blank lines before the next
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function.
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* The value of http.proxy can have "path" at the end for a socks
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proxy that listens to a unix-domain socket, but we started to
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discard it when we taught proxy auth code path to use the
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credential helpers, which has been corrected.
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* The code paths to compact multiple reftable files have been updated
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to correctly deal with multiple compaction triggering at the same
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time.
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* Support to specify ref backend for submodules has been enhanced.
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* "git svn" has been taught about svn:global-ignores property
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recent versions of Subversion has.
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* The default object hash and ref backend format used to be settable
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only with explicit command line option to "git init" and
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environment variables, but now they can be configured in the user's
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global and system wide configuration.
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* "git send-email" learned "--translate-aliases" option that reads
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addresses from the standard input and emits the result of applying
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aliases on them to the standard output.
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* 'git for-each-ref' learned a new "--format" atom to find the branch
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that the history leading to a given commit "%(is-base:<commit>)" is
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likely based on.
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* The command line prompt support used to be littered with bash-isms,
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which has been corrected to work with more shells.
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* Support for the RUNTIME_PREFIX feature has been added to z/OS port.
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* "git send-email" learned "--mailmap" option to allow rewriting the
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recipient addresses.
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* "git mergetool" learned to use VSCode as a merge backend.
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* "git pack-redundant" has been marked for removal in Git 3.0.
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* One-line messages to "die" and other helper functions will get LF
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added by these helper functions, but many existing messages had an
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unnecessary LF at the end, which have been corrected.
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* The "scalar clone" command learned the "--no-tags" option.
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* The environment GIT_ADVICE has been intentionally kept undocumented
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to discourage its use by interactive users. Add documentation to
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help tool writers.
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* "git apply --3way" learned to take "--ours" and other options.
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Performance, Internal Implementation, Development Support etc.
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--------------------------------------------------------------
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* A build tweak knob has been simplified by not setting the value
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that is already the default; another unused one has been removed.
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* A CI job that use clang-format to check coding style issues in new
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code has been added.
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* The reviewing guidelines document now explicitly encourages people
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to give positive reviews and how.
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* Test script linter has been updated to catch an attempt to use
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one-shot export construct "VAR=VAL func" for shell functions (which
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does not work for some shells) better.
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* Some project conventions have been added to CodingGuidelines.
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* In the refs subsystem, implicit reliance of the_repository has been
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eliminated; the repository associated with the ref store object is
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used instead.
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* Various tests in reftable library have been rewritten using the unit test
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framework.
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* A test that fails on an unusually slow machine was found, and made
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less likely to cause trouble by lengthening the expiry value it
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uses.
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* An existing test of hashmap API has been rewritten with the
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unit-test framework.
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* A policy document that describes platform support levels and
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expectation on platform stakeholders has been introduced.
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* The refs API has been taught to give symref target information to
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the users of ref iterators, allowing for-each-ref and friends to
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avoid an extra ref_resolve_* API call per a symbolic ref.
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* Unit-test framework has learned a simple control structure to allow
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embedding test statements in-line instead of having to create a new
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function to contain them.
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* Incremental updates of multi-pack index files is getting worked on.
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* Use of API functions that implicitly depend on the_repository
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object in the config subsystem has been rewritten to pass a
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repository object through the callchain.
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* Unused parameters have been either marked as UNUSED to squelch
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-Wunused warnings or dropped from many functions..
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* The code in the reftable library has been cleaned up by discarding
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unused "generic" interface.
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* The underlying machinery for "git diff-index" has long been made to
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expand the sparse index as needed, but the command fully expanded
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the sparse index upfront, which now has been taught not to do.
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* More trace2 events at key points on push and fetch code paths have
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been added.
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* Make our codebase compilable with the -Werror=unused-parameter
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option.
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* "git cat-file" works well with the sparse-index, and gets marked as
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such.
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* CI started failing completely for linux32 jobs, as the step to
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upload failed test directory uses GitHub actions that is deprecated
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and is now disabled.
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* Import clar unit tests framework libgit2 folks invented for our
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use.
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* The error messages from the test script checker have been improved.
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* The convention to calling into built-in command implementation has
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been updated to pass the repository, if known, together with the
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prefix value.
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* "git apply" had custom buffer management code that predated before
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use of strbuf got widespread, which has been updated to use strbuf,
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which also plugged some memory leaks.
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* The reftable backend learned to more efficiently handle exclude
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patterns while enumerating the refs.
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* CI updates. FreeBSD image has been updated to 13.4.
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(merge 2eeb29702e cb/ci-freebsd-13-4 later to maint).
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* Give timeout to the locking code to write to reftable, instead of
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failing on the first failure without retrying.
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* The checksum at the tail of files are now computed without
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collision detection protection. This is safe as the consumer of
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the information to protect itself from replay attacks checks for
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hash collisions independently.
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Fixes since v2.46
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-----------------
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* "git add -p" by users with diff.suppressBlankEmpty set to true
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failed to parse the patch that represents an unmodified empty line
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with an empty line (not a line with a single space on it), which
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has been corrected.
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* "git checkout --ours" (no other arguments) complained that the
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option is incompatible with branch switching, which is technically
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correct, but found confusing by some users. It now says that the
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user needs to give pathspec to specify what paths to checkout.
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* It has been documented that we avoid "VAR=VAL shell_func" and why.
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* "git rebase --help" referred to "offset" (the difference between
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the location a change was taken from and the change gets replaced)
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incorrectly and called it "fuzz", which has been corrected.
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* "git notes add -m '' --allow-empty" and friends that take prepared
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data to create notes should not invoke an editor, but it started
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doing so since Git 2.42, which has been corrected.
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* An expensive operation to prepare tracing was done in re-encoding
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code path even when the tracing was not requested, which has been
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corrected.
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* More leakfixes.
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* The credential helper to talk to OSX keychain sometimes sent
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garbage bytes after the username, which has been corrected.
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* A recent update broke "git ls-remote" used outside a repository,
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which has been corrected.
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* The patch parser in 'git apply' has been a bit more lenient against
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unexpected mode bits, like 100664, recorded on extended header lines.
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* "git config --value=foo --fixed-value section.key newvalue" barfed
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when the existing value in the configuration file used the
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valueless true syntax, which has been corrected.
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* The patch parser in "git patch-id" has been tightened to avoid
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getting confused by lines that look like a patch header in the log
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message.
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* "git reflog expire" failed to honor annotated tags when computing
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reachable commits.
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* A flakey test and incorrect calls to strtoX() functions have been
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fixed.
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* Follow-up on 2.45.1 regression fix.
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* "git rev-list ... | git diff-tree -p --remerge-diff --stdin" should
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behave more or less like "git log -p --remerge-diff" but instead it
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crashed, forgetting to prepare a temporary object store needed.
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* "git bundle unbundle" outside a repository triggered a BUG()
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unnecessarily, which has been corrected.
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* Maintenance tasks other than "gc" now properly go background when
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"git maintenance" runs them.
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* We created a useless pseudo-merge reachability bitmap that is about
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0 commits, and attempted to include commits that are not in packs,
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which made no sense. These bugs have been corrected.
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(merge a72dfab8b8 tb/pseudo-merge-bitmap-fixes later to maint).
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* "git rebase -x --quiet" was not quiet, which was corrected.
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* The code path for compacting reftable files saw some bugfixes
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against concurrent operation.
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* The code forgot to discard unnecessary in-core commit buffer data
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for commits that "git log --skip=<number>" traversed but omitted
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from the output, which has been corrected.
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* "git verify-pack" and "git index-pack" started dying outside a
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repository, which has been corrected.
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* A data corruption bug when multi-pack-index is used and the same
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objects are stored in multiple packfiles has been corrected.
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* "git pack-refs --auto" for the files backend was too aggressive,
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which has been a bit tamed.
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(merge c3459ae9ef ps/pack-refs-auto-heuristics later to maint).
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* A file descriptor left open is now properly closed when "git
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sparse-checkout" updates the sparse patterns.
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* In a few corner cases "git diff --exit-code" failed to report
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"changes" (e.g., renamed without any content change), which has
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been corrected.
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* Cygwin does have /dev/tty support that is needed by things like
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single-key input mode.
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* The interpret-trailers command failed to recognise the end of the
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message when the commit log ends in an incomplete line.
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* "git rebase --autostash" failed to resurrect the autostashed
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changes when the command gets aborted after giving back control
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asking for hlep in conflict resolution.
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(merge bf6ab087d1 pw/rebase-autostash-fix later to maint).
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* The "imap-send" now allows to be compiled with NO_OPENSSL and
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OPENSSL_SHA1 defined together.
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(merge 997950a750 jk/no-openssl-with-openssl-sha1 later to maint).
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* The support to customize build options to adjust for older versions
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and/or older systems for the interop tests has been improved.
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(merge 22ef5f02a8 jk/interop-test-build-options later to maint).
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* Update the character width table for Unicode 16.
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(merge 44dc651132 bb/unicode-width-table-16 later to maint).
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* In Git 2.39, Git.pm stopped working in a bare repository, which has
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been corrected.
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(merge d3edb0bdde jk/git-pm-bare-repo-fix later to maint).
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* When a remote-helper dies before Git writes to it, SIGPIPE killed
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Git silently. We now explain the situation a bit better to the end
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user in our error message.
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(merge 6e7fac9bca jk/diag-unexpected-remote-helper-death later to maint).
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* A few usability fixes to "git jump" (in contrib/).
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(merge 083b82544d jk/jump-quickfix-fixes later to maint).
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* "git diff --exit-code" ignored modified binary files, which has
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been corrected.
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(merge 9a41735af6 rs/diff-exit-code-binary later to maint).
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* When a subprocess to work in a submodule spawned by "git submodule"
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fails with SIGPIPE, the parent Git process caught the death of it,
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but gave a generic "failed to work in that submodule", which was
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misleading. We now behave as if the parent got SIGPIPE and die.
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(merge 082caf527e pw/submodule-process-sigpipe later to maint).
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* "git archive" with pathspec magic that uses the attribute
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information did not work well, which has been corrected.
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(merge 296743a7ca rs/archive-with-attr-pathspec-fix later to maint).
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* Background tasks "git maintenance" runs may need to use credential
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information when going over the network, but a credential helper
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may work only in an interactive environment, and end up blocking a
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scheduled task waiting for UI. Credential helpers can now behave
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differently when they are not running interactively.
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(merge b9183b0a02 ds/background-maintenance-with-credential later to maint).
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* "git --git-dir=nowhere cmd" failed to properly notice that it
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wasn't in any repository while processing includeIf.onbranch
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configuration and instead crashed.
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* When "git sparse-checkout disable" turns a sparse checkout into a
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regular checkout, the index is fully expanded. This totally
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expected behaviour however had an "oops, we are expanding the
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index" advice message, which has been corrected.
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(merge 537e516a39 ds/sparse-checkout-expansion-advice later to maint).
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* macOS with fsmonitor daemon can hang forever when a submodule is
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involved, which has been corrected.
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* Other code cleanup, docfix, build fix, etc.
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(merge be10ac7037 jc/mailinfo-header-cleanup later to maint).
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(merge 4460e052e0 jc/range-diff-lazy-setup later to maint).
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(merge 0627c58e7a ak/typofixes later to maint).
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(merge 83799f1500 jk/t9001-deflake later to maint).
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(merge e02cc08a88 ak/typofix-2.46-maint later to maint).
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(merge 5c5d29e1c4 ps/ci-gitlab-upgrade later to maint).
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(merge 9c4c840901 jc/doc-discarding-stalled-topics later to maint).
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(merge 5e6f359f6b ds/read-cache-mempool-leakfix later to maint).
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