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A collection of patches from Git for Windows has been upstreamed,
mostly focusing on simplifying and robustifying build configurations
for MinGW/MSYS2, dropping obsolete compatibility options, and allowing
the main 'git.exe' to be used directly without the extra wrapper
process on Windows.
* js/mingw-build-updates:
t0060: adjust the code style
mingw: allow `git.exe` to be used instead of the "Git wrapper"
mingw: ensure valid CTYPE
mingw: always define `ETC_*` for MSYS2 environments
windows: skip linking `git-<command>` for built-ins
mingw: rely on MSYS2's metadata instead of hard-coding it
mingw: only enable the MSYS2-specific stuff when compiling in MSYS2
mingw: set the prefix and HOST_CPU as per MSYS2's settings
mingw: avoid over-specifying `--pic-executable`
mingw: only use -Wl,--large-address-aware for 32-bit builds
mingw: drop the -D_USE_32BIT_TIME_T option
mingw: stop hard-coding `CC = gcc`
mingw: include the Python parts in the build
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The development helper script to lint gitlink references in the
documentation has been updated to avoid a newer Perl regular
expression syntax that breaks on older Perl versions.
* ta/lint-gitlink-older-perl-fix:
lint-gitlink: don't use empty lower bound in .{0,8}
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Running "git history" in a corrupt repository can (unsurprisingly)
segfault when a necessary tree object is not found.
* jc/history-missing-tree-errorfix:
history: do not dereference NULL when parent tree is missing
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The object lookup machinery has been taught to gracefully recover
when a multi-pack-index points to an owning pack that was removed
during a concurrent geometric repack, and 'git replay' has been
fixed to not segfault when reading such missing objects.
* en/midx-missing-pack-fallback:
packfile: recover when a multi-pack-index names a removed pack
mktree: do not use OBJECT_INFO_QUICK when checking objects
mktree: plug per-tree leak in --batch mode
replay: fail gracefully when a merge input is unreadable
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The memory ownership of argv elements passed to the revision
machinery has been made more robust by keeping logically "freed"
elements alive until the rev_info struct is released, preventing
use-after-free bugs when options store references to them.
* jk/rev-info-argv-to-free:
revision: simplify mark_argv_for_free() callers
revision: hang on to "freed" argv elements
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The 'git replay' command has been taught the '--linearize' option to
drop merge commits and linearize the replayed history, mimicking 'git
rebase --no-rebase-merges'.
* tc/replay-linearize:
replay: offer an option to linearize the commit topology
replay: resolve the replay base outside pick_regular_commit()
replay: add helper to put entry into replayed_commits
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Various spelling mistakes in comments and test descriptions have
been corrected.
* hk/typofix:
versioncmp: fix typo in versioncmp.c, t/t0022-crlf-rename.sh
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The string extraction logic for the branch name and worktree name
from the given path in 'git worktree add' has been corrected and
simplified to avoid out-of-bounds reads and improper handling of
trailing slashes.
* rs/worktree-add-basename-fixes:
worktree add: let worktree_basename() return string copy
worktree add: trim slashes when deriving branch name from path
worktree add: reject separator-only path
worktree add: don't read out of bounds in worktree_basename()
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GitHub Actions CI workflow runs triggered by pull requests have
been configured to cancel older runs when a new push is made to the
same pull request.
* hn/ci-cancel-stale-pr-runs:
ci: cancel stale pull request workflow runs
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A few tests for the reference handling subsystem have been added to
exercise the handling of forbidden characters and symbolic references.
* ns/ref-symref-additional-tests:
t1402: test forbidden characters in refnames
t1401: check symbolic-ref failure and --quiet silence on a non-symbolic ref
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These days, the test cases are less free-form than in the wild old days
of the Git project.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Git for Windows wants to add `git.exe` to the users' `PATH`, without
cluttering the latter with unnecessary executables such as `wish.exe`.
To that end, it invented the concept of its "Git wrapper", i.e. a tiny
executable located in `C:\Program Files\Git\cmd\git.exe` (originally a
CMD script) whose sole purpose is to set up a couple of environment
variables and then spawn the _actual_ `git.exe` (which nowadays lives in
`C:\Program Files\Git\mingw64\bin\git.exe` for 64-bit, and the obvious
equivalent for 32-bit installations).
Currently, the following environment variables are set unless already
initialized:
- `MSYSTEM`, to make sure that the MSYS2 Bash and the MSYS2 Perl
interpreter behave as expected, and
- `PLINK_PROTOCOL`, to force PuTTY's `plink.exe` to use the SSH
protocol instead of Telnet,
- `PATH`, to make sure that the `bin` folder in the user's home
directory, as well as the `/mingw64/bin` and the `/usr/bin`
directories are included. The trick here is that the `/mingw64/bin/`
and `/usr/bin/` directories are relative to the top-level installation
directory of Git for Windows (which the included Bash interprets as
`/`, i.e. as the MSYS pseudo root directory).
Using the absence of `MSYSTEM` as a tell-tale, we can detect in
`git.exe` whether these environment variables have been initialized
properly. Therefore we can call `C:\Program Files\Git\mingw64\bin\git`
in-place after this change, without having to call Git through the Git
wrapper.
Obviously, above-mentioned directories must be _prepended_ to the `PATH`
variable, otherwise we risk picking up executables from unrelated Git
installations. We do that by constructing the new `PATH` value from
scratch, appending `$HOME/bin` (if `HOME` is set), then the MSYS2 system
directories, and then appending the original `PATH`.
Side note: this modification of the `PATH` variable is independent of
the modification necessary to reach the executables and scripts in
`/mingw64/libexec/git-core/`, i.e. the `GIT_EXEC_PATH`. That
modification is still performed by Git, elsewhere, long after making the
changes described above.
While we _still_ cannot simply hard-link `mingw64\bin\git.exe` to `cmd`
(because the former depends on a couple of `.dll` files that are only in
`mingw64\bin`, i.e. calling `...\cmd\git.exe` would fail to load due to
missing dependencies), at least we can now avoid that extra process of
running the Git wrapper (which then has to wait for the spawned
`git.exe` to finish) by calling `...\mingw64\bin\git.exe` directly, via
its absolute path.
Testing this is in Git's test suite tricky: we set up a "new" MSYS
pseudo-root and copy the `git.exe` file into the appropriate location,
then verify that `MSYSTEM` is set properly, and also that the `PATH` is
modified so that scripts can be found in `$HOME/bin`, `/mingw64/bin/`
and `/usr/bin/`.
This addresses https://github.com/git-for-windows/git/issues/2283
Note: This keeps the same, hard-coded MSYSTEM platform support for CMake
as before, and introduces an `msystem' and `mingw-prefix` knob for Meson
(read: neither CMake nor Meson will automatically inherit the setting
from the current build environment).
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A change between versions 2.4.1 and 2.6.0 of the MSYS2 runtime modified
how Cygwin's runtime (and hence Git for Windows' MSYS2 runtime
derivative) handles locales: d16a56306d (Consolidate wctomb/mbtowc calls
for POSIX-1.2008, 2016-07-20).
An unintended side-effect is that "cold-calling" into the POSIX
emulation will start with a locale based on the current code page,
something that Git for Windows is very ill-prepared for, as it expects
to be able to pass a command-line containing non-ASCII characters to the
shell without having those characters munged.
One symptom of this behavior: when `git clone` or `git fetch` shell out
to call `git-upload-pack` with a path that contains non-ASCII
characters, the shell tried to interpret the entire command-line
(including command-line parameters) as executable path, which obviously
must fail.
This fixes https://github.com/git-for-windows/git/issues/1036
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Special-casing even more configurations simply does not make sense.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It is merely a historical wart that, say, `git-commit` exists in the
`libexec/git-core/` directory, a tribute to the original idea to let Git
be essentially a bunch of Unix shell scripts revolving around very few
"plumbing" (AKA low-level) commands.
Git has evolved a lot from there. These days, most of Git's
functionality is contained within the `git` executable, in the form of
"built-in" commands.
To accommodate for scripts that use the "dashed" form of Git commands,
even today, Git provides hard-links that make the `git` executable
available as, say, `git-commit`, just in case that an old script has not
been updated to invoke `git commit`.
Those hard-links do not come cheap: they take about half a minute for
every build of Git on Windows, they are mistaken for taking up huge
amounts of space by some Windows Explorer versions that do not
understand hard-links, and therefore many a "bug" report had to be
addressed.
The "dashed form" has been officially deprecated in Git version 1.5.4,
which was released on February 2nd, 2008, i.e. a very long time ago.
This deprecation was never finalized by skipping these hard-links, but
we can start the process now, in Git for Windows.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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MSYS2 defines some helpful environment variables, e.g. `MSYSTEM`. There
is code in Git for Windows to ensure that that `MSYSTEM` variable is
set, hard-coding a default.
However, the existing solution jumps through hoops to reconstruct the
proper default, and is even incomplete doing so, as we found out when we
extended it to support CLANGARM64.
This is absolutely unnecessary because there is already a perfectly
valid `MSYSTEM` value we can use at build time. This is even true when
building the MINGW32 variant on a MINGW64 system because `makepkg-mingw`
will override the `MSYSTEM` value as per the `MINGW_ARCH` array.
The same is equally true for the `/mingw64`, `/mingw32` and
`/clangarm64` prefix: those values are already available via the
`MINGW_PREFIX` environment variable, and we just need to pass that
setting through.
Only when `MINGW_PREFIX` is not set (as is the case in Git for Windows'
minimal SDK, where only `MSYSTEM` is guaranteed to be set correctly), we
use as fall-back the top-level directory whose name is the down-cased
value of the `MSYSTEM` variable.
Incidentally, this also broadens the support to all the configurations
supported by the MSYS2 project, i.e. clang64 & ucrt64, too.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The tell-tale is the presence of the `MSYSTEM` value while compiling, of
course. In that case, we want to ensure that `MSYSTEM` is set when
running `git.exe`, and also enable the magic MSYS2 tty detection.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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MSYS2 already defines a couple of helpful environment variables, and we
can use those to infer the installation location as well as the CPU. No
need for hard-coding ;-)
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In bf2d5d8239e (Don't let ld strip relocations, 2016-01-16) (picked from
https://github.com/git-for-windows/git/pull/612/commits/6a237925bf10),
Git for Windows introduced the `-Wl,-pic-executable` flag, specifying
the exact entry point via `-e`. This required discerning between i686
and x86_64 code because the former required the symbol to be prefixed
with an underscore, the latter did not.
As per https://sourceware.org/bugzilla/show_bug.cgi?id=10865, the
specified symbols are already the default, though.
So let's drop the overly-specific definition.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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That option only matters there, and is in fact only really understood in
those builds; UCRT64 versions of GCC, for example, do not know what to
do with that option.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This option was added in fa93bb20d72 (MinGW: Fix stat definitions to
work with MinGW runtime version 4.0, 2013-09-11), i.e. a _long_ time
ago. So long, in fact, that it still targeted MinGW. But we switched to
mingw-w64 in 2015, which seems not to share the problem, and therefore
does not require a fix.
Even worse: This flag is incompatible with UCRT64, which we are about to
support by way of upstreaming `mingw-w64-git` to the MSYS2 project, see
https://github.com/msys2/MINGW-packages/pull/26470 for details.
So let's send that option into its well-deserved retirement.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This is no longer true in general, not with supporting Clang out of the
box.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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While Git for Windows does not _ship_ Python (in order to save on
bandwidth), MSYS2 provides very fine Python interpreters that users can
easily take advantage of, by using Git for Windows within its SDK.
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The documentation for 'git cherry-pick' has been updated to clarify
that the '--no-commit' option intentionally skips setting the
'CHERRY_PICK_HEAD' ref. A test has also been added to ensure this
behavior holds even when the operation stops for conflicts.
* as/cherry-pick-no-commit-doc:
doc: cherry-pick: note --no-commit skips CHERRY_PICK_HEAD
t3507: check no CHERRY_PICK_HEAD after conflicting --no-commit
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The gitdatamodel documentation page has been linked from a handful
of key documentaiton pages.
* kh/doc-datamodel:
doc: datamodel: link to the glossary
doc: glossary: link four of the terms to gitdatamodel(7)
doc: git: link to the gitdatamodel(7) tutorial
doc: git: list gitdatamodel(7) as a concept guide
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The regex quantifier {,n} was added in Perl 5.34.0 as a shorthand
for {0,n}. That makes it too new an introduction for Git which
targets Perl 5.26.0.
Even though Documentation/lint-gitlink.perl is a development helper
script, let's stick to the general Perl version requirement for
consistency, and use an explicit zero in .{0,8}.
Signed-off-by: Tuomas Ahola <taahol@utu.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The CI script to install dependencies for the documentation build
has been updated to install asciidoctor directly via the system
package manager instead of pinning to an older version via gem.
Additionally, an obsolete variable used for retired Azure Pipelines
environments has been removed.
* jk/ci-use-system-asciidoctor:
ci: drop ALREADY_HAVE_ASCIIDOCTOR variable
ci: fix missing Ruby dependency in "documentation" job
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The CI job that builds the documentation failed because it lacked
the 'gem' command. The 'asciidoc' package apparently stopped pulling
in the 'ruby' package as a transitive dependency. The CI script has
been updated to explicitly install 'ruby'.
* ps/ci-depends-on-ruby:
ci: fix missing Ruby dependency in "documentation" job
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The process of downloading packfile URIs in protocol v2 has been
instrumented with a Trace2 region. This visibility allows tracking
the cumulative time spent downloading external packs and the number
of advertised URIs without emitting a separate event per pack.
* tn/fetch-pack-trace-packfile-uri:
fetch-pack: trace packfile URI downloads
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The git rev-list command has been augmented with a '--missing-only'
option that filters the output to only show missing objects,
stripping the leading '?' character and suppressing present objects,
which is useful when used in combination with '--missing=print' or
'--missing=print-info'.
* sa/rev-list-missing-only:
rev-list: add --missing-only option to filter output
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"git maintenance" triggered "rerere gc" in unappropriate times and
interfered with "git rebase" etc. too much. The conditions "rerere
gc" gets triggered have been tweaked.
* ps/tune-rerere-gc:
builtin/maintenance: improve heuristic for "rerere gc"
rerere: extract logic to determine whether entries are stale
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Two members in "struct pathspec_item" were of type "char *", but
nobody updated the string through these pointers. They have been
made "const char *" instead.
* jc/pathspec-match-const:
pathspec: match and original in pathspec_item are const
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The autostash fallback in 'git checkout -m' has been refined to only
retry when there are local changes. Additionally, a blank line now
visually separates autostash conflict advice from the subsequent
branch-switch message.
* hn/checkout-m-autostash-refine:
checkout: separate autostash conflict advice from branch-switch message
stash: reserve exit status 1 for conflicts
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The CI job for Debian 11 has been updated to use Debian 12, as the
former is now out of the LTS period.
* jk/ci-bump-debian-to-12:
ci: bump debian-11 job to debian-12
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When a protocol v2 fetch includes packfile URIs, the client downloads
each advertised pack in a separate http-fetch process. Existing Trace2
regions cover negotiation, but not the time spent downloading these
packs or the number of advertised URIs.
Add a Trace2 region around the packfile URI download loop and record the
number of URIs. This makes the cost of downloading external packs
visible without emitting an event for each pack.
Extend the existing packfile URI test to verify the region and count.
Signed-off-by: Ted Nyman <tnyman@openai.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The error path in 'git submodule--helper' has been updated to plug a
memory leak when a repository handle could not be obtained,
leveraging an updated idempotent repo_clear().
* jk/submodule-error-leak:
submodule--helper: free URL when repository setup fails
repository: make repo_clear() idempotent
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The 'git imap-send' command has been taught to take the '--draft'
option to mark uploaded messages as drafts, which helps some email
clients render them properly for editing and sending.
* wf/imap-send-draft:
imap-send: add --draft to set IMAP \Draft flag
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Teach 'am', 'revert', and 'rebase' that running 'commit --amend' or a
partial 'commit <paths>' makes no sense during operations that stop
and return control to the user to resolve conflicts left in the
working tree, just like 'cherry-pick' and 'merge' do.
* en/no-amend-during-conflicts:
commit: refuse partial commits during conflict resolution
commit: refuse to amend during conflict resolution
commit: reword the empty-commit rebase amend error
commit: allow a partial commit when a rebase pick becomes empty
commit: clarify FROM_REBASE_PICK and is_from_rebase() names
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CGI helper scripts used by HTTP-related test scripts have been updated
to use atomic filesystem operations, preventing race conditions when
Apache handles concurrent requests.
* mm/lib-httpd-cgi-safe:
t/lib-httpd: document writing concurrency-safe CGI helpers
t/lib-httpd: make http-429 first-request check atomic
t/lib-httpd: fix apply-one-time-script race under concurrent requests
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The git worktree repair command failed to rewrite the .git file of
a working tree from a relative path to an absolute path when the
command was run in the working tree itself. The
read_gitfile_gently() function was modified to also return whether
the path originally recorded in the file was absolute, and this new
capability is used to correctly detect such mismatches.
* yn/worktree-repair-relative:
worktree repair: detect relative path in .git file correctly
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The zsh completion script (in 'contrib/') has been updated to
correctly locate the Git command after global options like '-C' by
properly skipping them, similar to how the bash completion does.
* ll/zsh-complete-git-potty-options:
completion: zsh: support completion after "git -C <path>"
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The application of the edited patch in 'git add -e' has been
refactored to use the internal apply API directly, avoiding the need
to spawn a 'git apply' subprocess.
* gr/add-e-use-apply-api:
builtin/add.c: replace run_command() with direct apply_all_patches() call
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The instructions for deprecated commands emitted by
you_still_use_that() have been reworded to clarify that the removal
decision is final and to provide more assertive guidance on finding
a replacement.
* jc/you-still-use-that:
you_still_use_that(): reword the instructions
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'git checkout' and 'git worktree add' makes guesses based on a name
of a remote-tracking branch, but does not give an error when such a
remote-tracking branch cannot be uniquely identified, which has
been corrected.
* yn/worktree-ambiguous-remote-advice:
worktree add: treat multiple matches with --guess-remote as an error
worktree add: improve message for ambiguous remote branch name
checkout: improve message for ambiguous remote branch name
checkout: extract function to display advice for ambiguous remotes
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The reftable code has been optimized to avoid an unnecessary
stat/reload of the stack when an addition already holds the
list_file lock, reducing the number of newfstatat syscalls from
linear to constant when writing refs.
* kn/reftable-optimize-reloading:
reftable/stack: avoid reloading the stack when already locked
reftable/stack: move list lock to `struct reftable_stack`
reftable/stack: rename reftable_stack_new_addition()
reftable/stack: remove `REFTABLE_STACK_NEW_ADDITION_RELOAD`
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The list of what happens when a change is hard to apply states without
qualification that CHERRY_PICK_HEAD is set. Under --no-commit it is
not: d7e5c0cbfb (Introduce CHERRY_PICK_HEAD, 2011-02-19) skips the ref
on purpose there, presuming the user intends to further edit the
result and possibly pick more commits on top.
The option's own description says nothing about the ref or about
authorship. "git commit" reads the author of a cherry-pick from
CHERRY_PICK_HEAD, so without it a plain commit records you as the
author. Say so where the option is described, and say that this is
the point of the option rather than a wrinkle: what is being built is
the user's own work, not a reproduction of the original commit.
Signed-off-by: Aleksei Sviridkin <f@lex.la>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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