Junio C Hamano [Sat, 12 Feb 2022 00:55:58 +0000 (16:55 -0800)]
Merge branch 'jc/doc-log-messages'
Update the contributor-facing documents on proposed log messages.
* jc/doc-log-messages:
SubmittingPatches: explain why we care about log messages
CodingGuidelines: hint why we value clearly written log messages
SubmittingPatches: write problem statement in the log in the present tense
* ab/no-errno-from-resolve-ref-unsafe:
refs API: remove "failure_errno" from refs_resolve_ref_unsafe()
sequencer: don't use die_errno() on refs_resolve_ref_unsafe() failure
The protocol keyword 'ready' isn't meant for translation. Pass it as
parameter instead of spell it in die() message (and potentially confuse
translators).
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
fetch: skip computing output width when not printing anything
When updating references via git-fetch(1), then by default we report to
the user which references have been changed. This output is formatted in
a nice table such that the different columns are aligned. Because the
first column contains abbreviated object IDs we thus need to iterate
over all refs which have changed and compute the minimum length for
their respective abbreviated hashes. While this effort makes sense in
most cases, it is wasteful when the user passes the `--quiet` flag: we
don't print the summary, but still compute the length.
Skip computing the summary width when the user asked for us to be quiet.
This gives us a speedup of nearly 10% when doing a mirror-fetch in a
repository with thousands of references being updated:
Benchmark 1: git fetch --quiet +refs/*:refs/* (HEAD~)
Time (mean ± σ): 96.078 s ± 0.508 s [User: 91.378 s, System: 10.870 s]
Range (min … max): 95.449 s … 96.760 s 5 runs
Benchmark 2: git fetch --quiet +refs/*:refs/* (HEAD)
Time (mean ± σ): 88.214 s ± 0.192 s [User: 83.274 s, System: 10.978 s]
Range (min … max): 87.998 s … 88.446 s 5 runs
Summary
'git fetch --quiet +refs/*:refs/* (HEAD)' ran
1.09 ± 0.01 times faster than 'git fetch --quiet +refs/*:refs/* (HEAD~)'
Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
fetch-pack: use commit-graph when computing cutoff
During packfile negotiation we iterate over all refs announced by the
remote side to check whether their IDs refer to commits already known to
us. If a commit is known to us already, then its date is a potential
cutoff point for commits we have in common with the remote side.
There is potentially a lot of commits announced by the remote depending
on how many refs there are in the remote repository, and for every one
of them we need to search for it in our object database and, if found,
parse the corresponding object to find out whether it is a candidate for
the cutoff date. This can be sped up by trying to look up commits via
the commit-graph first, which is a lot more efficient.
Benchmarks in a repository with about 2,1 million refs and an up-to-date
commit-graph show an almost 20% speedup when mirror-fetching:
Benchmark 1: git fetch +refs/*:refs/* (v2.35.0)
Time (mean ± σ): 115.587 s ± 2.009 s [User: 109.874 s, System: 11.305 s]
Range (min … max): 113.584 s … 118.820 s 5 runs
Benchmark 2: git fetch +refs/*:refs/* (HEAD)
Time (mean ± σ): 96.859 s ± 0.624 s [User: 91.948 s, System: 10.980 s]
Range (min … max): 96.180 s … 97.875 s 5 runs
Summary
'git fetch +refs/*:refs/* (HEAD)' ran
1.19 ± 0.02 times faster than 'git fetch +refs/*:refs/* (v2.35.0)'
Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This test fiddles with files under .git/logs to recreate a condition
that is unlikely to warrant special attention under reftable, as
reflog blocks are zlib compressed.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Thu, 10 Feb 2022 02:19:07 +0000 (18:19 -0800)]
glossary: describe "worktree"
We have description on "per worktree ref", but "worktree" is not
described in the glossary. We do have "working tree", though.
Casually put, a "working tree" is what your editor and compiler
interacts with. "worktree" is a mechanism to allow one or more
"working tree"s to be attached to a repository and used to check out
different commits and branches independently, which includes not
just a "working tree" but also repository metadata like HEAD, the
index to support simultaneous use of them. Historically, we used
these terms interchangeably but we have been trying to use "working
tree" when we mean it, instead of "worktree".
Most of the existing references to "working tree" in the glossary do
refer primarily to the working tree portion, except for one that
said refs like HEAD and refs/bisect/* are per "working tree", but it
is more precise to say they are per "worktree".
Josh Steadmon [Sat, 5 Feb 2022 05:00:49 +0000 (21:00 -0800)]
clone, submodule: pass partial clone filters to submodules
When cloning a repo with a --filter and with --recurse-submodules
enabled, the partial clone filter only applies to the top-level repo.
This can lead to unexpected bandwidth and disk usage for projects which
include large submodules. For example, a user might wish to make a
partial clone of Gerrit and would run:
`git clone --recurse-submodules --filter=blob:5k https://gerrit.googlesource.com/gerrit`.
However, only the superproject would be a partial clone; all the
submodules would have all blobs downloaded regardless of their size.
With this change, the same filter can also be applied to submodules,
meaning the expected bandwidth and disk savings apply consistently.
To avoid changing default behavior, add a new clone flag,
`--also-filter-submodules`. When this is set along with `--filter` and
`--recurse-submodules`, the filter spec is passed along to git-submodule
and git-submodule--helper, such that submodule clones also have the
filter applied.
This applies the same filter to the superproject and all submodules.
Users who need to customize the filter per-submodule would need to clone
with `--no-recurse-submodules` and then manually initialize each
submodule with the proper filter.
Applying filters to submodules should be safe thanks to Jonathan Tan's
recent work [1, 2, 3] eliminating the use of alternates as a method of
accessing submodule objects, so any submodule object access now triggers
a lazy fetch from the submodule's promisor remote if the accessed object
is missing. This patch is a reworked version of [4], which was created
prior to Jonathan Tan's work.
Junio C Hamano [Wed, 9 Feb 2022 22:21:01 +0000 (14:21 -0800)]
Merge branch 'js/sparse-vs-split-index'
Mark in various places in the code that the sparse index and the
split index features are mutually incompatible.
* js/sparse-vs-split-index:
split-index: it really is incompatible with the sparse index
t1091: disable split index
sparse-index: sparse index is disallowed when split index is active
Junio C Hamano [Wed, 9 Feb 2022 22:21:01 +0000 (14:21 -0800)]
Merge branch 'jt/clone-not-quite-empty'
Cloning from a repository that does not yet have any branches or
tags but has other refs resulted in a "remote transport reported
error", which has been corrected.
* jt/clone-not-quite-empty:
clone: support unusual remote ref configurations
Junio C Hamano [Wed, 9 Feb 2022 22:21:00 +0000 (14:21 -0800)]
Merge branch 'jt/sparse-checkout-leading-dir-fix'
"git sparse-checkout init" failed to write into $GIT_DIR/info
directory when the repository was created without one, which has
been corrected to auto-create it.
* jt/sparse-checkout-leading-dir-fix:
sparse-checkout: create leading directory
Junio C Hamano [Wed, 9 Feb 2022 22:21:00 +0000 (14:21 -0800)]
Merge branch 'ab/config-based-hooks-2'
More "config-based hooks".
* ab/config-based-hooks-2:
run-command: remove old run_hook_{le,ve}() hook API
receive-pack: convert push-to-checkout hook to hook.h
read-cache: convert post-index-change to use hook.h
commit: convert {pre-commit,prepare-commit-msg} hook to hook.h
git-p4: use 'git hook' to run hooks
send-email: use 'git hook run' for 'sendemail-validate'
git hook run: add an --ignore-missing flag
hooks: convert worktree 'post-checkout' hook to hook library
hooks: convert non-worktree 'post-checkout' hook to hook library
merge: convert post-merge to use hook.h
am: convert applypatch-msg to use hook.h
rebase: convert pre-rebase to use hook.h
hook API: add a run_hooks_l() wrapper
am: convert {pre,post}-applypatch to use hook.h
gc: use hook library for pre-auto-gc hook
hook API: add a run_hooks() wrapper
hook: add 'run' subcommand
"git fetch --negotiate-only" is an internal command used by "git
push" to figure out which part of our history is missing from the
other side. It should never recurse into submodules even when
fetch.recursesubmodules configuration variable is set, nor it
should trigger "gc". The code has been tightened up to ensure it
only does common ancestry discovery and nothing else.
* gc/fetch-negotiate-only-early-return:
fetch: help translators by reusing the same message template
fetch --negotiate-only: do not update submodules
fetch: skip tasks related to fetching objects
fetch: use goto cleanup in cmd_fetch()
Junio C Hamano [Wed, 9 Feb 2022 22:20:59 +0000 (14:20 -0800)]
Merge branch 'tl/doc-cli-options-first'
We explain that revs come first before the pathspec among command
line arguments, but did not spell out that dashed options come
before other args, which has been corrected.
* tl/doc-cli-options-first:
git-cli.txt: clarify "options first and then args"
The conditional inclusion mechanism of configuration files using
"[includeIf <condition>]" learns to base its decision on the
URL of the remote repository the repository interacts with.
* jt/conditional-config-on-remote-url:
config: include file if remote URL matches a glob
config: make git_config_include() static
Taylor Blau [Wed, 9 Feb 2022 19:26:47 +0000 (14:26 -0500)]
midx: prevent writing a .bitmap without any objects
When trying to write a MIDX, we already prevent the case where there
weren't any packs present, and thus we would have written an empty MIDX.
But there is another "empty" case, which is more interesting, and we
don't yet handle. If we try to write a MIDX which has at least one pack,
but those packs together don't contain any objects, we will encounter a
BUG() when trying to use the bitmap corresponding to that MIDX, like so:
$ git rev-parse HEAD | git pack-objects --revs --use-bitmap-index --stdout >/dev/null
BUG: pack-revindex.c:394: pack_pos_to_midx: out-of-bounds object at 0
(note that in the above reproduction, both `--use-bitmap-index` and
`--stdout` are important, since without the former we won't even both to
load the .bitmap, and without the latter we wont attempt pack reuse).
The problem occurs when we try to discover the identity of the
preferred pack to determine which range if any of existing packs we can
reuse verbatim. This path is: `reuse_packfile_objects()` ->
`reuse_partial_packfile_from_bitmap()` -> `midx_preferred_pack()`.
#4 0x000055555575401f in pack_pos_to_midx (m=0x555555997160, pos=0) at pack-revindex.c:394
#5 0x00005555557502c8 in midx_preferred_pack (bitmap_git=0x55555599c280) at pack-bitmap.c:1431
#6 0x000055555575036c in reuse_partial_packfile_from_bitmap (bitmap_git=0x55555599c280, packfile_out=0x5555559666b0 <reuse_packfile>,
entries=0x5555559666b8 <reuse_packfile_objects>, reuse_out=0x5555559666c0 <reuse_packfile_bitmap>) at pack-bitmap.c:1452
#7 0x00005555556041f6 in get_object_list_from_bitmap (revs=0x7fffffffcbf0) at builtin/pack-objects.c:3658
#8 0x000055555560465c in get_object_list (ac=2, av=0x555555997050) at builtin/pack-objects.c:3765
#9 0x0000555555605e4e in cmd_pack_objects (argc=0, argv=0x7fffffffe920, prefix=0x0) at builtin/pack-objects.c:4154
Since neither the .bitmap or MIDX stores the identity of the
preferred pack, we infer it by trying to load the first object in
pseudo-pack order, and then asking the MIDX which pack was chosen to
represent that object.
But this fails our bounds check, since there are zero objects in the
MIDX to begin with, which results in the BUG().
We could catch this more carefully in `midx_preferred_pack()`, but
signaling the absence of a preferred pack out to all of its callers is
somewhat awkward.
Instead, let's avoid writing a MIDX .bitmap without any objects
altogether. We catch this case in `write_midx_internal()`, and emit a
warning if the caller indicated they wanted to write a bitmap before
clearing out the relevant flags. If we somehow got to
write_midx_bitmap(), then we will call BUG(), but this should now be an
unreachable path.
Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
completion: handle unusual characters for sparse-checkout
Update the __gitcomp_directories method to de-quote and handle unusual
characters in directory names. Although this initially involved an attempt
to re-use the logic in __git_index_files, this method removed
subdirectories (e.g. folder1/0/ became folder1/), so instead new custom
logic was placed directly in the __gitcomp_directories method.
Note there are two tests for this new functionality - one for spaces and
accents and one for backslashes and tabs. The backslashes and tabs test
uses FUNNYNAMES to avoid running on Windows. This is because:
1. Backslashes are explicitly not allowed in Windows file paths.
2. Although tabs appear to be allowed when creating a file in a Windows
bash shell, they actually are not renderable (and appear as empty boxes
in the shell).
Co-authored-by: Johannes Schindelin <johannes.schindelin@gmx.de> Co-authored-by: Lessley Dennington <lessleydennington@gmail.com> Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Lessley Dennington <lessleydennington@gmail.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use new __gitcomp_directories method to complete directory names in cone
mode sparse-checkouts. This method addresses the caveat of poor
performance in monorepos from the previous commit (by completing only one
level of directories).
The unusual character caveat from the previous commit will be fixed by the
final commit in this series.
Correct multiple issues with tab completion of the git sparse-checkout
command. These issues were:
1. git sparse-checkout <TAB> previously resulted in an incomplete list of
subcommands (it was missing reapply and add).
2. Subcommand options were not tab-completable.
3. git sparse-checkout set <TAB> and git sparse-checkout add <TAB> showed
both file names and directory names. While this may be a less surprising
behavior for non-cone mode, cone mode sparse checkouts should complete
only directory names.
Note that while the new strategy of just using git ls-tree to complete on
directory names is simple and a step in the right direction, it does have
some caveats. These are:
1. Likelihood of poor performance in large monorepos (as a result of
recursively completing directory names).
2. Inability to handle paths containing unusual characters.
These caveats will be fixed by subsequent commits in this series.
Signed-off-by: Lessley Dennington <lessleydennington@gmail.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t0012: verify that built-ins handle `-h` even without gitdir
We just fixed a class of recently introduced bugs where calling, say,
`git fetch -h` outside a repository would not show the usage but instead
show an ugly `BUG` message.
Let's verify that this does not regress anymore.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
checkout/fetch/pull/pack-objects: allow `-h` outside a repository
When we taught these commands about the sparse index, we did not account
for the fact that the `cmd_*()` functions _can_ be called without a
gitdir, namely when `-h` is passed to show the usage.
A plausible approach to address this is to move the
`prepare_repo_settings()` calls right after the `parse_options()` calls:
The latter will never return when it handles `-h`, and therefore it is
safe to assume that we have a `gitdir` at that point, as long as the
built-in is marked with the `RUN_SETUP` flag.
However, it is unfortunately not that simple. In `cmd_pack_objects()`,
for example, the repo settings need to be fully populated so that the
command-line options `--sparse`/`--no-sparse` can override them, not the
other way round.
Therefore, we choose to imitate the strategy taken in `cmd_diff()`,
where we simply do not bother to prepare and initialize the repo
settings unless we have a `gitdir`.
This fixes https://github.com/git-for-windows/git/issues/3688
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Derrick Stolee [Mon, 7 Feb 2022 21:33:03 +0000 (21:33 +0000)]
config: make git_configset_get_string_tmp() private
This method was created in f1de981e8 (config: fix leaks from
git_config_get_string_const(), 2020-08-14) but its only use was in the
repo_config_get_string_tmp() method, also declared in config.h and
implemented in config.c. Since this is otherwise unused and is a very
similar implementation to git_configset_get_value(), let's remove this
declaration.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Derrick Stolee [Mon, 7 Feb 2022 21:33:02 +0000 (21:33 +0000)]
worktree: copy sparse-checkout patterns and config on add
When adding a new worktree, it is reasonable to expect that we want to
use the current set of sparse-checkout settings for that new worktree.
This is particularly important for repositories where the worktree would
become too large to be useful. This is even more important when using
partial clone as well, since we want to avoid downloading the missing
blobs for files that should not be written to the new worktree.
The only way to create such a worktree without this intermediate step of
expanding the full worktree is to copy the sparse-checkout patterns and
config settings during 'git worktree add'. Each worktree has its own
sparse-checkout patterns, and the default behavior when the
sparse-checkout file is missing is to include all paths at HEAD. Thus,
we need to have patterns from somewhere, they might as well be the
current worktree's patterns. These are then modified independently in
the future.
In addition to the sparse-checkout file, copy the worktree config file
if worktree config is enabled and the file exists. This will copy over
any important settings to ensure the new worktree behaves the same as
the current one. The only exception we must continue to make is that
core.bare and core.worktree should become unset in the worktree's config
file.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Derrick Stolee [Mon, 7 Feb 2022 21:33:01 +0000 (21:33 +0000)]
sparse-checkout: set worktree-config correctly
`git sparse-checkout set/init` enables worktree-specific
configuration[*] by setting extensions.worktreeConfig=true, but neglects
to perform the additional necessary bookkeeping of relocating
`core.bare=true` and `core.worktree` from $GIT_COMMON_DIR/config to
$GIT_COMMON_DIR/config.worktree, as documented in git-worktree.txt. As a
result of this oversight, these settings, which are nonsensical for
secondary worktrees, can cause Git commands to incorrectly consider a
worktree bare (in the case of `core.bare`) or operate on the wrong
worktree (in the case of `core.worktree`). Fix this problem by taking
advantage of the recently-added init_worktree_config() which enables
`extensions.worktreeConfig` and takes care of necessary bookkeeping.
While at it, for backward-compatibility reasons, also stop upgrading the
repository format to "1" since doing so is (unintentionally) not
required to take advantage of `extensions.worktreeConfig`, as explained
by 11664196ac ("Revert "check_repository_format_gently(): refuse
extensions for old repositories"", 2020-07-15).
[*] The main reason to use worktree-specific config for the
sparse-checkout builtin was to avoid enabling sparse-checkout patterns
in one and causing a loss of files in another. If a worktree does not
have a sparse-checkout patterns file, then the sparse-checkout logic
will not kick in on that worktree.
Reported-by: Sean Allred <allred.sean@gmail.com> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Derrick Stolee [Mon, 7 Feb 2022 21:33:00 +0000 (21:33 +0000)]
config: add repo_config_set_worktree_gently()
Some config settings, such as those for sparse-checkout, are likely
intended to only apply to one worktree at a time. To make this write
easier, add a new config API method, repo_config_set_worktree_gently().
This method will attempt to write to the worktree-specific config, but
will instead write to the common config file if worktree config is not
enabled. The next change will introduce a consumer of this method.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Derrick Stolee [Mon, 7 Feb 2022 21:32:59 +0000 (21:32 +0000)]
worktree: create init_worktree_config()
Upgrading a repository to use extensions.worktreeConfig is non-trivial.
There are several steps involved, including moving some config settings
from the common config file to the main worktree's config.worktree file.
The previous change updated the documentation with all of these details.
Commands such as 'git sparse-checkout set' upgrade the repository to use
extensions.worktreeConfig without following these steps, causing some
user pain in some special cases.
Create a helper method, init_worktree_config(), that will be used in a
later change to fix this behavior within 'git sparse-checkout set'. The
method is carefully documented in worktree.h.
Note that we do _not_ upgrade the repository format version to 1 during
this process. The worktree config extension must be considered by Git
and third-party tools even if core.repositoryFormatVersion is 0 for
historical reasons documented in 11664196ac ("Revert
"check_repository_format_gently(): refuse extensions for old
repositories"", 2020-07-15). This is a special case for this extension,
and newer extensions (such as extensions.objectFormat) still need to
upgrade the repository format version.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The extensions.worktreeConfig extension was added in 58b284a (worktree:
add per-worktree config files, 2018-10-21) and was somewhat documented
in Documentation/git-config.txt. However, the extensions.worktreeConfig
value was not specified further in the list of possible config keys. The
location of the config.worktree file is not specified, and there are
some precautions that should be mentioned clearly, but are only
mentioned in git-worktree.txt.
Expand the documentation to help users discover the complexities of
extensions.worktreeConfig by adding details and cross links in these
locations (relative to Documentation/):
* $GIT_DIR/config.worktree takes precedence over $GIT_COMMON_DIR/config.
* The core.worktree and core.bare=true settings are incorrect to have in
the common config file when extensions.worktreeConfig is enabled.
* The sparse-checkout settings core.sparseCheckout[Cone] are recommended
to be set in the worktree config.
As documented in 11664196ac ("Revert "check_repository_format_gently():
refuse extensions for old repositories"", 2020-07-15), this extension
must be considered regardless of the repository format version for
historical reasons.
A future change will update references to extensions.worktreeConfig
within git-sparse-checkout.txt, but a behavior change is needed before
making those updates.
Helped-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
ls-remote & transport API: release "struct transport_ls_refs_options"
Fix a memory leak in codepaths that use the "struct
transport_ls_refs_options" API. Since the introduction of the struct
in 39835409d10 (connect, transport: encapsulate arg in struct,
2021-02-05) the caller has been responsible for freeing it.
That commit in turn migrated code originally added in 402c47d9391 (clone: send ref-prefixes when using protocol v2,
2018-07-20) and b4be74105fe (ls-remote: pass ref prefixes when
requesting a remote's refs, 2018-03-15). Only some of those codepaths
were releasing the allocated resources of the struct, now all of them
will.
Mark the "t/t5511-refspec.sh" test as passing when git is compiled
with SANITIZE=leak. They'll now be listed as running under the
"GIT_TEST_PASSING_SANITIZE_LEAK=true" test mode (the "linux-leaks" CI
target). Previously 24/47 tests would fail.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix a memory leak that happened when the --path option was
provided. This leak has been with us ever since the option was added
in 39702431500 (add --path option to git hash-object, 2008-08-03).
We can now mark "t1007-hash-object.sh" as passing when git is compiled
with SANITIZE=leak. It'll now run in the the
"GIT_TEST_PASSING_SANITIZE_LEAK=true" test mode (the "linux-leaks" CI
target).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Sat, 5 Feb 2022 17:42:32 +0000 (09:42 -0800)]
Merge branch 'ms/update-index-racy'
"git update-index --refresh" has been taught to deal better with
racy timestamps (just like "git status" already does).
* ms/update-index-racy:
update-index: refresh should rewrite index in case of racy timestamps
t7508: add tests capturing racy timestamp handling
t7508: fix bogus mtime verification
test-lib: introduce API for verifying file mtime
Junio C Hamano [Sat, 5 Feb 2022 17:42:31 +0000 (09:42 -0800)]
Merge branch 'ab/cat-file'
Assorted updates to "git cat-file", especially "-h".
* ab/cat-file:
cat-file: s/_/-/ in typo'd usage_msg_optf() message
cat-file: don't whitespace-pad "(...)" in SYNOPSIS and usage output
cat-file: use GET_OID_ONLY_TO_DIE in --(textconv|filters)
object-name.c: don't have GET_OID_ONLY_TO_DIE imply *_QUIETLY
cat-file: correct and improve usage information
cat-file: fix remaining usage bugs
cat-file: make --batch-all-objects a CMDMODE
cat-file: move "usage" variable to cmd_cat_file()
cat-file docs: fix SYNOPSIS and "-h" output
parse-options API: add a usage_msg_optf()
cat-file tests: test messaging on bad objects/paths
cat-file tests: test bad usage
Junio C Hamano [Sat, 5 Feb 2022 17:42:31 +0000 (09:42 -0800)]
Merge branch 'jc/qsort-s-alignment-fix'
Fix a hand-rolled alloca() imitation that may have violated
alignment requirement of data being sorted in compatibility
implementation of qsort_s() and stable qsort().
* jc/qsort-s-alignment-fix:
stable-qsort: avoid using potentially unaligned access
compat/qsort_s.c: avoid using potentially unaligned access
Junio C Hamano [Sat, 5 Feb 2022 17:42:30 +0000 (09:42 -0800)]
Merge branch 'rs/apply-symlinks-use-strset'
"git apply" (ab)used the util pointer of the string-list to keep
track of how each symbolic link needs to be handled, which has been
simplified by using strset.
* rs/apply-symlinks-use-strset:
apply: use strsets to track symlinks
Junio C Hamano [Sat, 5 Feb 2022 17:42:30 +0000 (09:42 -0800)]
Merge branch 'rs/grep-expr-cleanup'
Code clean-up.
* rs/grep-expr-cleanup:
grep: use grep_and_expr() in compile_pattern_and()
grep: extract grep_binexp() from grep_or_expr()
grep: use grep_not_expr() in compile_pattern_not()
grep: use grep_or_expr() in compile_pattern_or()
* jh/p4-spawning-external-commands-cleanup:
git-p4: don't print shell commands as python lists
git-p4: pass command arguments as lists instead of using shell
git-p4: don't select shell mode using the type of the command argument
Junio C Hamano [Sat, 5 Feb 2022 17:42:28 +0000 (09:42 -0800)]
Merge branch 'pb/pull-rebase-autostash-fix'
"git pull --rebase" ignored the rebase.autostash configuration
variable when the remote history is a descendant of our history,
which has been corrected.
* pb/pull-rebase-autostash-fix:
pull --rebase: honor rebase.autostash when fast-forwarding
t0051: use "skip_all" under !MINGW in single-test file
Have this file added in 06ba9d03e34 (t0051: test GIT_TRACE to a
windows named pipe, 2018-09-11) use the same "skip_all" pattern as an
existing Windows-only test added in 0e218f91c29 (mingw: unset PERL5LIB
by default, 2018-10-30) uses.
This way TAP consumers like "prove" will show a nice summary when the
test is skipped. Instead of:
$ prove t0051-windows-named-pipe.sh
[...]
t0051-windows-named-pipe.sh .. ok
[...]
This is because we are now making use of the right TAP-y way to
communicate this to the consumer. I.e. skipping the whole test file,
v.s. skipping individual tests (in this case there's only one test).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Glen Choo [Sat, 29 Jan 2022 00:04:45 +0000 (16:04 -0800)]
branch: add --recurse-submodules option for branch creation
To improve the submodules UX, we would like to teach Git to handle
branches in submodules. Start this process by teaching "git branch" the
--recurse-submodules option so that "git branch --recurse-submodules
topic" will create the `topic` branch in the superproject and its
submodules.
Although this commit does not introduce breaking changes, it does not
work well with existing --recurse-submodules commands because "git
branch --recurse-submodules" writes to the submodule ref store, but most
commands only consider the superproject gitlink and ignore the submodule
ref store. For example, "git checkout --recurse-submodules" will check
out the commits in the superproject gitlinks (and put the submodules in
detached HEAD) instead of checking out the submodule branches.
Because of this, this commit introduces a new configuration value,
`submodule.propagateBranches`. The plan is for Git commands to
prioritize submodule ref store information over superproject gitlinks if
this value is true. Because "git branch --recurse-submodules" writes to
submodule ref stores, for the sake of clarity, it will not function
unless this configuration value is set.
This commit also includes changes that support working with submodules
from a superproject commit because "branch --recurse-submodules" (and
future commands) need to read .gitmodules and gitlinks from the
superproject commit, but submodules are typically read from the
filesystem's .gitmodules and the index's gitlinks. These changes are:
* add a submodules_of_tree() helper that gives the relevant
information of an in-tree submodule (e.g. path and oid) and
initializes the repository
* add is_tree_submodule_active() by adding a treeish_name parameter to
is_submodule_active()
* add the "submoduleNotUpdated" advice to advise users to update the
submodules in their trees
Incidentally, fix an incorrect usage string that combined the 'list'
usage of git branch (-l) with the 'create' usage; this string has been
incorrect since its inception, a8dfd5eac4 (Make builtin-branch.c use
parse_options., 2007-10-07).
Helped-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Glen Choo <chooglen@google.com> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
pack-bitmap-write.c: don't return without stop_progress()
Fix a bug that's been here since 7cc8f971085 (pack-objects: implement
bitmap writing, 2013-12-21), we did not call stop_progress() if we
reached the early exit in this function.
We could call stop_progress() before we return, but better yet is to
defer calling start_progress() until we need it. For now this only
matters in practice because we'd previously omit the "region_leave"
for the progress trace2 event.
Suggested-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix a bug that's been with us ever since 98a13647408 (trace2: log
progress time and throughput, 2020-05-12), when the
stop_progress_msg() API was used we didn't log a "region_leave" for
the "region_enter" we start in "start_progress_delay()".
The only user of the "stop_progress_msg()" function is
"index-pack". Let's add a previously failing test to check that we
have the same number of "region_enter" and "region_leave" events, with
"-v" we'll log progress even in the test environment.
In addition to that we've had a submarine bug here introduced with 9d81ecb52b5 (progress: add sparse mode to force 100% complete message,
2019-03-21). The "start_sparse_progress()" API would only do the right
thing if the progress was ended with "stop_progress()", not
"stop_progress_msg()".
The only user of that API uses "stop_progress()", but let's still fix
that along with the trace2 issue by making "stop_progress()" a trivial
wrapper for "stop_progress_msg()".
We can also drop the "if (progress)" test from
"finish_if_sparse()". It's now a helper for the small
"stop_progress_msg()" function. We'll already have returned from it if
"progress" is "NULL".
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
progress.c: refactor stop_progress{,_msg}() to use helpers
Create two new static helpers for the stop_progress() and
stop_progress_msg() functions.
As we'll see in the subsequent commit having those two split up
doesn't make much sense, and results in a bug in how we log to
trace2. This narrow preparatory change makes the diff for that
subsequent change smaller.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
progress.c: use dereferenced "progress" variable, not "(*p_progress)"
Since 98a13647408 (trace2: log progress time and throughput,
2020-05-12) stop_progress() dereferences a "struct progress **"
parameter in several places. Extract a dereferenced variable to reduce
clutter and make it clearer who needs to write to this parameter.
Now instead of using "*p_progress" several times in stop_progress() we
check it once for NULL and then use a dereferenced "progress" variable
thereafter. This uses the same pattern as the adjacent
stop_progress_msg() function, see ac900fddb7f (progress: don't
dereference before checking for NULL, 2020-08-10).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
progress.h: format and be consistent with progress.c naming
Fix an inconsistency introduced in dc6a0757c4f (make struct progress
an opaque type, 2007-10-30) and rename the "progress" parameters to
stop_progress{,_msg}() to "p_progress". Now these match the
corresponding parameters in the *.c code.
While we're at it let's move the definition of the former below the
latter, a subsequent change will start defining stop_progress() in
terms of stop_progress_msg(). Let's also remove the excess whitespace
at the end of the file.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Test what happens when we "stop" without a "start", omit the "stop"
after a "start", or start two concurrent progress bars. This
extends the trace2 tests added in 98a13647408 (trace2: log progress
time and throughput, 2020-05-12).
These tests are not merely testing the helper, but invalid API usage
that can happen if the progress.c API is misused.
The "without stop" test will leak under SANITIZE=leak, since this
buggy use of the API will leak memory. But let's not skip it entirely,
or use the "!SANITIZE_LEAK" prerequisite check as we'd do with tests
that we're skipping due to leaks we haven't fixed yet. Instead
annotate the specific command that should skip leak checking with
custom $LSAN_OPTIONS[1].
progress.c tests: make start/stop commands on stdin
Change the usage of the "test-tool progress" introduced in 2bb74b53a49 (Test the progress display, 2019-09-16) to take command
like "start" and "stop" on stdin, instead of running them implicitly.
This makes for tests that are easier to read, since the recipe will
mirror the API usage, and allows for easily testing invalid usage that
would yield (or should yield) a BUG(), e.g. providing two "start"
calls in a row. A subsequent commit will add such tests.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If we have braces on one arm of an if/else all of them should have it,
per the CodingGuidelines's "When there are multiple arms to a
conditional[...]" advice. This formatting change makes a subsequent
commit smaller.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
leak tests: fix a memory leak in "test-progress" helper
Fix a memory leak in the test-progress helper, and mark the
corresponding "t0500-progress-display.sh" test as being leak-free
under SANITIZE=leak. This fixes a leak added in 2bb74b53a4 (Test the
progress display, 2019-09-16).
My 48f68715b14 (tr2: stop leaking "thread_name" memory, 2021-08-27)
had fixed another memory leak in this test (as it did some trace2
testing).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
completion: add a GIT_COMPLETION_SHOW_ALL_COMMANDS
Add a GIT_COMPLETION_SHOW_ALL_COMMANDS=1 configuration setting to go
with the existing GIT_COMPLETION_SHOW_ALL=1 added in c099f579b98 (completion: add GIT_COMPLETION_SHOW_ALL env var,
2020-08-19).
This will include plumbing commands such as "cat-file" in "git <TAB>"
and "git c<TAB>" completion. Without/with this I have 134 and 243
completion with git <TAB>, respectively.
It was already possible to do this by tweaking
GIT_TESTING_PORCELAIN_COMMAND_LIST= from the outside, that testing
variable was added in 84a97131065 (completion: let git provide the
completable command list, 2018-05-20). Doing this before loading
git-completion.bash worked:
But such testing variables are not meant to be used from the outside,
and we make no guarantees that those internal won't change. So let's
expose this as a dedicated configuration knob.
It would be better to teach --list-cmds=* a new category which would
include all of these groups, but that's a larger change that we can
leave for some other time.
completion tests: re-source git-completion.bash in a subshell
Change tests of git-completion.bash that re-source it to do so inside
a subshell. Re-sourcing it will clobber variables it sets, and in the
case of the "GIT_COMPLETION_SHOW_ALL=1" test added in ca2d62b7879 (parse-options: don't complete option aliases by default,
2021-07-16) change the behavior of the completion persistently.
Aside from the addition of "(" and ")" on new lines this is an
indentation-only change, only the "(" and ")" lines are changed under
"git diff -w".
So let's change that test, and for good measure do the same for the
three tests that precede it, which were added in 8b0eaa41f23 (completion: clear cached --options when sourcing the
completion script, 2018-03-22). The may not be wrong, but doing this
establishes a more reliable pattern for future tests, which might use
these as a template to copy.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Shaoxuan Yuan [Wed, 2 Feb 2022 06:43:00 +0000 (14:43 +0800)]
t/lib-read-tree-m-3way: indent with tabs
As Documentation/CodingGuidelines says, our shell scripts
(including tests) are to use HT for indentation, but this script
uses 4-column indent with SP. Fix this.
Signed-off-by: Shaoxuan Yuan <shaoxuan.yuan02@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Shaoxuan Yuan [Wed, 2 Feb 2022 06:42:59 +0000 (14:42 +0800)]
t/lib-read-tree-m-3way: modernize style
Many invocations of the test_expect_success command in this
file are written in old style where the command, an optional
prerequisite, and the test title are written on separate
lines, and the executable script string begins on its own
line, and these lines are pasted together with backslashes
as necessary.
An invocation of the test_expect_success command in modern
test scripts however writes the prerequisite and the title
on the same line as the test_expect_success command itself,
and ends the line with a single quote that begins the
executable script string.
Update the style for uniformity.
Signed-off-by: Shaoxuan Yuan <shaoxuan.yuan02@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Shaoxuan Yuan [Wed, 2 Feb 2022 07:28:44 +0000 (15:28 +0800)]
builtin/diff.c: fix "git-diff" usage string typo
Remove mistaken right square brackets from "git-diff"
usage string. Make the usage string conform to "git-diff"
documentation (Documentation/git-diff.txt).
Signed-off-by: Shaoxuan Yuan <shaoxuan.yuan02@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jerry Zhang [Wed, 2 Feb 2022 04:19:45 +0000 (20:19 -0800)]
patch-id: fix scan_hunk_header on diffs with 1 line of before/after
Normally diffs will contain a hunk header of the format
"@@ -2,2 +2,15 @@ code". However when there is only 1 line of
change, the unified diff format allows for the second comma
separated value to be omitted in either before or after
line counts.
This can produce hunk headers that look like
"@@ -2 +2,18 @@ code" or "@@ -2,2 +2 @@ code".
As a result, scan_hunk_header mistakenly returns the line
number as line count, which then results in unpredictable
parsing errors with the rest of the patch, including giving
multiple lines of output for a single commit.
Fix by explicitly setting line count to 1 when there is
no comma, and add a test.
apply.c contains this same logic except it is correct. A
worthwhile future project might be to unify these two diff
parsers so they both benefit from fixes.
Signed-off-by: Jerry Zhang <jerry@skydio.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jerry Zhang [Wed, 2 Feb 2022 04:20:15 +0000 (20:20 -0800)]
patch-id: fix antipatterns in tests
Clean up the tests for patch-id by moving file preparation
tasks inside the test body and redirecting files directly into
stdin instead of using 'cat'.
Signed-off-by: Jerry Zhang <jerry@skydio.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:37 +0000 (02:37 +0000)]
diff-merges: avoid history simplifications when diffing merges
Doing diffs for merges are special; they should typically avoid history
simplification. For example, with
git log --diff-merges=first-parent -- path
the default history simplification would remove merge commits from
consideration if the file "path" matched the second parent. That is
counter to what the user wants when looking for first-parent diffs.
Similar comments can be made for --diff-merges=separate (which diffs
against both parents) and --diff-merges=remerge (which diffs against a
remerge of the merge commit).
However, history simplification still makes sense if not doing diffing
merges, and it also makes sense for the combined and dense-combined
forms of diffing merges (because both of those are defined to only show
a diff when the merge result at the relevant paths differs from *both*
parents).
So, for separate, first-parent, and remerge styles of diff-merges, turn
off history simplification.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:36 +0000 (02:37 +0000)]
merge-ort: mark conflict/warning messages from inner merges as omittable
A recursive merge involves merging the merge bases of the two branches
being merged. Such an inner merge can itself generate conflict notices.
While such notices may be useful when initially trying to create a
merge, they seem to just be noise when investigating merges later with
--remerge-diff. (Especially when both sides of the outer merge resolved
the conflict the same way leading to no overall conflict.) Remove them.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:35 +0000 (02:37 +0000)]
show, log: include conflict/warning messages in --remerge-diff headers
Conflicts such as modify/delete, rename/rename, or file/directory are
not representable via content conflict markers, and the normal output
messages notifying users about these were dropped with --remerge-diff.
While we don't want these messages randomly shown before the commit
and diff headers, we do want them to still be shown; include them as
part of the diff headers instead.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:34 +0000 (02:37 +0000)]
diff: add ability to insert additional headers for paths
When additional headers are provided, we need to
* add diff_filepairs to diff_queued_diff for each paths in the
additional headers map which, unless that path is part of
another diff_filepair already found in diff_queued_diff
* format the headers (colorization, line_prefix for --graph)
* make sure the various codepaths that attempt to return early
if there are "no changes" take into account the headers that
need to be shown.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:33 +0000 (02:37 +0000)]
merge-ort: format messages slightly different for use in headers
When users run
git show --remerge-diff $MERGE_COMMIT
or
git log -p --remerge-diff ...
stdout is not an appropriate location to dump conflict messages, but we
do want to provide them to users. We will include them in the diff
headers instead...but for that to work, we need for any multiline
messages to replace newlines with both a newline and a space. Add a new
flag to signal when we want these messages modified in such a fashion,
and use it in path_msg() to modify these messages this way. Also, allow
a special prefix to be specified for these headers.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:32 +0000 (02:37 +0000)]
merge-ort: mark a few more conflict messages as omittable
path_msg() has the ability to mark messages as omittable, designed for
remerge-diff where we'll instead be showing conflict messages as diff
headers for a subsequent diff. While all these messages are very useful
when trying to create a merge initially, early use with the
--remerge-diff feature (the only user of this omittable conflict message
capability), suggests that the particular messages marked in this commit
are just noise when trying to see what changes users made to create a
merge commit. Mark them as omittable.
Note that there were already a few messages marked as omittable in
merge-ort when doing a remerge-diff, because the development of
--remerge-diff preceded the upstreaming of merge-ort and I was trying to
ensure merge-ort could handle all the necessary requirements. See
commit c5a6f65527 ("merge-ort: add modify/delete handling and delayed
output processing", 2020-12-03) for the initial details. For some
examples of already-marked-as-omittable messages, see either
"Auto-merging <path>" or some of the submodule update hints. This
commit just adds two more messages that should also be omittable.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:31 +0000 (02:37 +0000)]
merge-ort: capture and print ll-merge warnings in our preferred fashion
Instead of immediately printing ll-merge warnings to stderr, we save
them in our output strbuf. Besides allowing us to move these warnings
to a special file for --remerge-diff, this has two other benefits for
regular merges done by merge-ort:
* The deferral of messages ensures we can print all messages about
any given path together (merge-recursive was known to sometimes
intersperse messages about other paths, particularly when renames
were involved).
* The deferral of messages means we can avoid printing spurious
conflict messages when we just end up aborting due to local user
modifications in the way. (In contrast to merge-recursive.c which
prematurely checks for local modifications in the way via
unpack_trees() and gets the check wrong both in terms of false
positives and false negatives relative to renames, merge-ort does
not perform the local modifications in the way check until the
checkout() step after the full merge has been computed.)
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:30 +0000 (02:37 +0000)]
ll-merge: make callers responsible for showing warnings
Since some callers may want to send warning messages to somewhere other
than stdout/stderr, stop printing "warning: Cannot merge binary files"
from ll-merge and instead modify the return status of ll_merge() to
indicate when a merge of binary files has occurred. Message printing
probably does not belong in a "low-level merge" anyway.
This commit continues printing the message as-is, just from the callers
instead of within ll_merge(). Future changes will start handling the
message differently in the merge-ort codepath.
There was one special case here: the callers in rerere.c do NOT check
for and print such a message; since those code paths explicitly skip
over binary files, there is no reason to check for a return status of
LL_MERGE_BINARY_CONFLICT or print the related message.
Note that my methodology included first modifying ll_merge() to return
a struct, so that the compiler would catch all the callers for me and
ensure I had modified all of them. After modifying all of them, I then
changed the struct to an enum.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:29 +0000 (02:37 +0000)]
log: clean unneeded objects during `log --remerge-diff`
The --remerge-diff option will need to create new blobs and trees
representing the "automatic merge" state. If one is traversing a
long project history, one can easily get hundreds of thousands of
loose objects generated during `log --remerge-diff`. However, none of
those loose objects are needed after we have completed our diff
operation; they can be summarily deleted.
Add a new helper function to tmp_objdir to discard all the contained
objects, and call it after each merge is handled.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 02:37:28 +0000 (02:37 +0000)]
show, log: provide a --remerge-diff capability
When this option is specified, we remerge all (two parent) merge commits
and diff the actual merge commit to the automatically created version,
in order to show how users removed conflict markers, resolved the
different conflict versions, and potentially added new changes outside
of conflict regions in order to resolve semantic merge problems (or,
possibly, just to hide other random changes).
This capability works by creating a temporary object directory and
marking it as the primary object store. This makes it so that any blobs
or trees created during the automatic merge are easily removable
afterwards by just deleting all objects from the temporary object
directory.
There are a few ways that this implementation is suboptimal:
* `log --remerge-diff` becomes slow, because the temporary object
directory can fill with many loose objects while running
* the log output can be muddied with misplaced "warning: cannot merge
binary files" messages, since ll-merge.c unconditionally writes those
messages to stderr while running instead of allowing callers to
manage them.
* important conflict and warning messages are simply dropped; thus for
conflicts like modify/delete or rename/rename or file/directory which
are not representable with content conflict markers, there may be no
way for a user of --remerge-diff to know that there had been a
conflict which was resolved (and which possibly motivated other
changes in the merge commit).
* when fixing the previous issue, note that some unimportant conflict
and warning messages might start being included. We should instead
make sure these remain dropped.
Subsequent commits will address these issues.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 03:42:40 +0000 (03:42 +0000)]
repo-settings: rename the traditional default fetch.negotiationAlgorithm
Give the traditional default fetch.negotiationAlgorithm the name
'consecutive'. Also allow a choice of 'default' to have Git decide
between the choices (currently, picking 'skipping' if
feature.experimental is true and 'consecutive' otherwise). Update the
documentation accordingly.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 03:42:39 +0000 (03:42 +0000)]
repo-settings: fix error handling for unknown values
In commit af3a67de01 ("negotiator: unknown fetch.negotiationAlgorithm
should error out", 2018-08-01), error handling for an unknown
fetch.negotiationAlgorithm was added with the code die()ing. This was
also added to the documentation for the fetch.negotiationAlgorithm
option, to make it explicit that the code would die on unknown values.
This behavior was lost with commit aaf633c2ad ("repo-settings: create
feature.experimental setting", 2019-08-13). Restore it so that the
behavior again matches the documentation.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Elijah Newren [Wed, 2 Feb 2022 03:42:38 +0000 (03:42 +0000)]
repo-settings: fix checking for fetch.negotiationAlgorithm=default
In commit 3050b6dfc75d (repo-settings.c: simplify the setup,
2021-09-21), the branch for handling fetch.negotiationAlgorithm=default
was deleted. Since this value is documented in
Documentation/config/fetch.txt, restore the check for this value.
Note that this change caused an observable bug: if someone sets
feature.experimental=true in config, and then passes "-c
fetch.negotiationAlgorithm=default" on the command line in an attempt to
override the config, then the override is ignored. Fix the bug by not
ignoring the value of "default".
Technically, before commit 3050b6dfc75d, repo-settings would treat any
fetch.negotiationAlgorithm value other than "skipping" or "noop" as a
request for "default", but I think it probably makes more sense to
ignore such broken requests and leave fetch.negotiationAlgorithm with
the default value rather than the value of "default". (If that sounds
confusing, note that "default" is usually the default value, but when
feature.experimental=true, "skipping" is the default value.)
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
perl Git.pm: don't ignore signalled failure in _cmd_close()
Fix misbehavior in Git.pm that dates back to the very first version of
the library in git.git added in b1edc53d062 (Introduce Git.pm (v4),
2006-06-24). When we fail to execute a command we shouldn't ignore all
signals, those can happen e.g. if abort() is called, or if the command
segfaults.
Because of this we'd consider e.g. a command that died due to LSAN
exiting with abort() successful, as is the case with the tests listed
as running successfully with SANITIZE=leak in 9081a421a6d (checkout:
fix "branch info" memory leaks, 2021-11-16). We did run them
successfully, but only because we ignored these errors.
This was then made worse by the use of "abort_on_error=1" for LSAN
added in 85b81b35ff9 (test-lib: set LSAN_OPTIONS to abort by default,
2017-09-05). Doing that makes sense, but without providing that option
we'd have a "$? >> 8" of "23" on failure, with abort_on_error=1 we'll
get "0".
All of our tests pass even without the SIGPIPE exception being added
here, but as the code appears to have been trying to ignore it let's
keep ignoring it for now.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Chen Bojun [Sat, 29 Jan 2022 06:35:38 +0000 (14:35 +0800)]
receive-pack: purge temporary data if no command is ready to run
When pushing a hidden ref, e.g.:
$ git push origin HEAD:refs/hidden/foo
"receive-pack" will reject our request with an error message like this:
! [remote rejected] HEAD -> refs/hidden/foo (deny updating a hidden ref)
The remote side ("git-receive-pack") will not create the hidden ref as
expected, but the pack file sent by "git-send-pack" is left inside the
remote repository. I.e. the quarantine directory is not purged as it
should be.
Add a checkpoint before calling "tmp_objdir_migrate()" and after calling
the "pre-receive" hook to purge that temporary data in the quarantine
area when there is no command ready to run.
The reason we do not add the checkpoint before the "pre-receive" hook,
but after it, is that the "pre-receive" hook is called with a switch-off
"skip_broken" flag, and all commands, even broken ones, should be fed
by calling "feed_receive_hook()".
Add a new test case in t5516 as well.
Helped-by: Jiang Xin <zhiyou.jx@alibaba-inc.com> Helped-by: Teng Long <dyroneteng@gmail.com> Signed-off-by: Chen Bojun <bojun.cbj@alibaba-inc.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
projects / thirdparty / git.git / log
