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Git 2.35 Release Notes
======================
Updates since Git 2.34
----------------------
Backward compatibility warts
* "_" is now treated as any other URL-valid characters in an URL when
matching the per-URL configuration variable names.
UI, Workflows & Features
* "git status --porcelain=v2" now show the number of stash entries
with --show-stash like the normal output does.
* "git stash" learned the "--staged" option to stash away what has
been added to the index (and nothing else).
* "git var GIT_DEFAULT_BRANCH" is a way to see what name is used for
the newly created branch if "git init" is run.
* Various operating modes of "git reset" have been made to work
better with the sparse index.
* "git submodule deinit" for a submodule whose .git metadata
directory is embedded in its working tree refused to work, until
the submodule gets converted to use the "absorbed" form where the
metadata directory is stored in superproject, and a gitfile at the
top-level of the working tree of the submodule points at it. The
command is taught to convert such submodules to the absorbed form
as needed.
* The completion script (in contrib/) learns that the "--date"
option of commands from the "git log" family takes "human" and
"auto" as valid values.
* "Zealous diff3" style of merge conflict presentation has been added.
* The "git log --format=%(describe)" placeholder has been extended to
allow passing selected command-line options to the underlying "git
describe" command.
* "default" and "reset" have been added to our color palette.
* The cryptographic signing using ssh keys can specify literal keys
for keytypes whose name do not begin with the "ssh-" prefix by
using the "key::" prefix mechanism (e.g. "key::ecdsa-sha2-nistp256").
* "git fetch" without the "--update-head-ok" option ought to protect
a checked out branch from getting updated, to prevent the working
tree that checks it out to go out of sync. The code was written
before the use of "git worktree" got widespread, and only checked
the branch that was checked out in the current worktree, which has
been updated.
* "git name-rev" has been tweaked to give output that is shorter and
easier to understand.
* "git apply" has been taught to ignore a message without a patch
with the "--allow-empty" option. It also learned to honor the
"--quiet" option given from the command line.
Performance, Internal Implementation, Development Support etc.
* The use of errno as a means to carry the nature of error in the ref
API implementation has been reworked and reduced.
* Teach and encourage first-time contributors to this project to
state the base commit when they submit their topic.
* The command line complation for "git send-email" options have been
tweaked to make it easier to keep it in sync with the command itself.
* Ensure that the sparseness of the in-core index matches the
index.sparse configuration specified by the repository immediately
after the on-disk index file is read.
* Code clean-up to eventually allow information on remotes defined
for an arbitrary repository to be read.
* Build optimization.
* Tighten code for testing pack-bitmap.
* Weather balloon to break people with compilers that do not support
C99.
* The "reftable" backend for the refs API, without integrating into
the refs subsystem, has been added.
* More tests are marked as leak-free.
* The test framework learns to list unsatisfied test prerequisites,
and optionally error out when prerequisites that are expected to be
satisfied are not.
* The default setting for trace2 event nesting was too low to cause
test failures, which is worked around by bumping it up in the test
framework.
* Drop support for TravisCI and update test workflows at GitHub.
* Many tests that used to need GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
mechanism to force "git" to use 'master' as the default name for
the initial branch no longer need it; the use of the mechanism from
them have been removed.
* Allow running our tests while disabling fsync.
* Document the parameters given to the reflog entry iterator callback
functions.
(merge e6e94f34b2 jc/reflog-iterator-callback-doc later to maint).
* The test helper for refs subsystem learned to write bogus and/or
nonexistent object name to refs to simulate error situations we
want to test Git in.
* "diff --histogram" optimization.
* Weather balloon to find compilers that do not grok variable
declaration in the for() loop.
* diff and blame commands have been taught to work better with sparse
index.
* The chainlint test script linter in the test suite has been updated.
* The DEVELOPER=yes build uses -std=gnu99 now.
Fixes since v2.34
-----------------
* "git grep" looking in a blob that has non-UTF8 payload was
completely broken when linked with certain versions of PCREv2
library in the latest release.
* Other code cleanup, docfix, build fix, etc.
* "git pull" with any strategy when the other side is behind us
should succeed as it is a no-op, but doesn't.
* An earlier change in 2.34.0 caused JGit application (that abused
GIT_EDITOR mechanism when invoking "git config") to get stuck with
a SIGTTOU signal; it has been reverted.
* An earlier change that broke .gitignore matching has been reverted.
* Things like "git -c branch.sort=bogus branch new HEAD", i.e. the
operation modes of the "git branch" command that do not need the
sort key information, no longer errors out by seeing a bogus sort
key.
(merge 98e7ab6d42 jc/fix-ref-sorting-parse later to maint).
* The compatibility implementation for unsetenv(3) were written to
mimic ancient, non-POSIX, variant seen in an old glibc; it has been
changed to return an integer to match the more modern era.
(merge a38989bd5b jc/unsetenv-returns-an-int later to maint).
* The clean/smudge conversion code path has been prepared to better
work on platforms where ulong is narrower than size_t.
(merge 596b5e77c9 mc/clean-smudge-with-llp64 later to maint).
* Redact the path part of packfile URI that appears in the trace output.
(merge 0ba558ffb1 if/redact-packfile-uri later to maint).
* CI has been taught to catch some Unicode directional formatting
sequence that can be used in certain mischief.
(merge 0e7696c64d js/ci-no-directional-formatting later to maint).
* The "--date=format:<strftime>" gained a workaround for the lack of
system support for a non-local timezone to handle "%s" placeholder.
(merge 9b591b9403 jk/strbuf-addftime-seconds-since-epoch later to maint).
* The "merge" subcommand of "git jump" (in contrib/) silently ignored
pathspec and other parameters.
(merge 67ba13e5a4 jk/jump-merge-with-pathspec later to maint).
* The code to decode the length of packed object size has been
corrected.
(merge 34de5b8eac jt/pack-header-lshift-overflow later to maint).
* The advice message given by "git pull" when the user hasn't made a
choice between merge and rebase still said that the merge is the
default, which no longer is the case. This has been corrected.
(merge 71076d0edd ah/advice-pull-has-no-preference-between-rebase-and-merge later to maint).
* "git fetch", when received a bad packfile, can fail with SIGPIPE.
This wasn't wrong per-se, but we now detect the situation and fail
in a more predictable way.
(merge 2a4aed42ec jk/fetch-pack-avoid-sigpipe-to-index-pack later to maint).
* The function to cull a child process and determine the exit status
had two separate code paths for normal callers and callers in a
signal handler, and the latter did not yield correct value when the
child has caught a signal. The handling of the exit status has
been unified for these two code paths. An existing test with
flakiness has also been corrected.
(merge 5263e22cba jk/t7006-sigpipe-tests-fix later to maint).
* When a non-existent program is given as the pager, we tried to
reuse an uninitialized child_process structure and crashed, which
has been fixed.
(merge f917f57f40 em/missing-pager later to maint).
* The single-key-input mode in "git add -p" had some code to handle
keys that generate a sequence of input via ReadKey(), which did not
handle end-of-file correctly, which has been fixed.
(merge fc8a8126df cb/add-p-single-key-fix later to maint).
* "git rebase -x" added an unnecessary 'exec' instructions before
'noop', which has been corrected.
(merge cc9dcdee61 en/rebase-x-fix later to maint).
* When the "git push" command is killed while the receiving end is
trying to report what happened to the ref update proposals, the
latter used to die, due to SIGPIPE. The code now ignores SIGPIPE
to increase our chances to run the post-receive hook after it
happens.
(merge d34182b9e3 rj/receive-pack-avoid-sigpipe-during-status-reporting later to maint).
* "git worktree add" showed "Preparing worktree" message to the
standard output stream, but when it failed, the message from die()
went to the standard error stream. Depending on the order the
stdio streams are flushed at the program end, this resulted in
confusing output. It has been corrected by sending all the chatty
messages to the standard error stream.
(merge b50252484f es/worktree-chatty-to-stderr later to maint).
* Coding guideline document has been updated to clarify what goes to
standard error in our system.
(merge e258eb4800 es/doc-stdout-vs-stderr later to maint).
* The sparse-index/sparse-checkout feature had a bug in its use of
the matching code to determine which path is in or outside the
sparse checkout patterns.
(merge 8c5de0d265 ds/sparse-deep-pattern-checkout-fix later to maint).
* "git rebase -x" by mistake started exporting the GIT_DIR and
GIT_WORK_TREE environment variables when the command was rewritten
in C, which has been corrected.
(merge 434e0636db en/rebase-x-wo-git-dir-env later to maint).
* When "git log" implicitly enabled the "decoration" processing
without being explicitly asked with "--decorate" option, it failed
to read and honor the settings given by the "--decorate-refs"
option.
* "git fetch --set-upstream" did not check if there is a current
branch, leading to a segfault when it is run on a detached HEAD,
which has been corrected.
(merge 17baeaf82d ab/fetch-set-upstream-while-detached later to maint).
* Other code cleanup, docfix, build fix, etc.
(merge 74db416c9c cw/protocol-v2-doc-fix later to maint).
(merge f9b2b6684d ja/doc-cleanup later to maint).
(merge 7d1b866778 jc/fix-first-object-walk later to maint).
(merge 538ac74604 js/trace2-avoid-recursive-errors later to maint).
(merge 152923b132 jk/t5319-midx-corruption-test-deflake later to maint).
(merge 9081a421a6 ab/checkout-branch-info-leakfix later to maint).
(merge 42c456ff81 rs/mergesort later to maint).
(merge ad506e6780 tl/midx-docfix later to maint).
(merge bf5b83fd8a hk/ci-checkwhitespace-commentfix later to maint).
(merge 49f1eb3b34 jk/refs-g11-workaround later to maint).
(merge 7d3fc7df70 jt/midx-doc-fix later to maint).
(merge 7b089120d9 hn/create-reflog-simplify later to maint).
(merge 9e12400da8 cb/mingw-gmtime-r later to maint).
(merge 0bf0de6cc7 tb/pack-revindex-on-disk-cleanup later to maint).
(merge 2c68f577fc ew/cbtree-remove-unused-and-broken-cb-unlink later to maint).
(merge eafd6e7e55 ab/die-with-bug later to maint).
(merge 91028f7659 jc/grep-patterntype-default-doc later to maint).
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