Fetching via protocol v0 over Smart HTTP transport sometimes failed
to correctly auto-follow tags.
* jk/fetch-auto-tag-following-fix:
transport-helper: re-examine object dir after fetching
The labels on conflict markers for the common ancestor, our version,
and the other version are available to custom 3-way merge driver
via %S, %X, and %Y placeholders.
* ad/custom-merge-placeholder-for-symbolic-pathnames:
merge-ll: expose revision names to custom drivers
Tests on ref API are moved around to prepare for reftable.
* jc/reffiles-tests:
t5312: move reffiles specific tests to t0601
t4202: move reffiles specific tests to t0600
t3903: make drop stash test ref backend agnostic
t1503: move reffiles specific tests to t0600
t1415: move reffiles specific tests to t0601
t1410: move reffiles specific tests to t0600
t1406: move reffiles specific tests to t0600
t1405: move reffiles specific tests to t0601
t1404: move reffiles specific tests to t0600
t1414: convert test to use Git commands instead of writing refs manually
remove REFFILES prerequisite for some tests in t1405 and t2017
t3210: move to t0601
The completion script (in contrib/) learned more options that can
be used with "git log".
* pb/complete-log-more:
completion: complete missing 'git log' options
completion: complete --encoding
completion: complete --patch-with-raw
completion: complete missing rev-list options
The "disable repository discovery of a bare repository" check,
triggered by setting safe.bareRepository configuration variable to
'explicit', has been loosened to exclude the ".git/" directory inside
a non-bare repository from the check. So you can do "cd .git &&
git cmd" to run a Git command that works on a bare repository without
explicitly specifying $GIT_DIR now.
* kl/allow-working-in-dot-git-in-non-bare-repository:
setup: allow cwd=.git w/ bareRepository=explicit
"git archive --remote=<remote>" learned to talk over the smart
http (aka stateless) transport.
* jx/remote-archive-over-smart-http:
transport-helper: call do_take_over() in process_connect
transport-helper: call do_take_over() in connect_helper
http-backend: new rpc-service for git-upload-archive
transport-helper: protocol v2 supports upload-archive
remote-curl: supports git-upload-archive service
transport-helper: no connection restriction in connect_helper
All conditional "advice" messages show how to turn them off, which
becomes repetitive. Setting advice.* configuration explicitly on
now omits the instruction part.
* rj/advice-disable-how-to-disable:
advice: allow disabling the automatic hint in advise_if_enabled()
"git diff --no-rename A B" did not disable rename detection but did
not trigger an error from the command line parser.
* rs/parse-options-with-keep-unknown-abbrev-fix:
parse-options: simplify positivation handling
parse-options: fully disable option abbreviation with PARSE_OPT_KEEP_UNKNOWN
Rename detection logic ignored the final line of a file if it is an
incomplete line.
* en/diffcore-delta-final-line-fix:
diffcore-delta: avoid ignoring final 'line' of file
Define "special ref" as a very narrow set that consists of
FETCH_HEAD and MERGE_HEAD, and clarify everything else that used to
be classified as such are actually just pseudorefs.
* ps/not-so-many-refs-are-special:
Documentation: add "special refs" to the glossary
refs: redefine special refs
refs: convert MERGE_AUTOSTASH to become a normal pseudo-ref
sequencer: introduce functions to handle autostashes via refs
refs: convert AUTO_MERGE to become a normal pseudo-ref
sequencer: delete REBASE_HEAD in correct repo when picking commits
sequencer: clean up pseudo refs with REF_NO_DEREF
Update to a new feature recently added, "git show-ref --exists".
* tc/show-ref-exists-fix:
builtin/show-ref: treat directory as non-existing in --exists
Low-level I/O optimization for reftable.
* ps/reftable-optimize-io:
reftable/stack: fix race in up-to-date check
reftable/stack: unconditionally reload stack after commit
reftable/blocksource: use mmap to read tables
reftable/blocksource: refactor code to match our coding style
reftable/stack: use stat info to avoid re-reading stack list
reftable/stack: refactor reloading to use file descriptor
reftable/stack: refactor stack reloading to have common exit path
Tighten URL checks fsck makes in a URL recorded for submodules.
* vd/fsck-submodule-url-test:
submodule-config.c: strengthen URL fsck check
t7450: test submodule urls
test-submodule: remove command line handling for check-name
submodule-config.h: move check_submodule_url
When $HOME/.gitignore is missing but XDG config file available, we
should write into the latter, not former. "git gc" and "git
maintenance" wrote into a wrong "global config" file, which have
been corrected.
* kh/maintenance-use-xdg-when-it-should:
maintenance: use XDG config if it exists
config: factor out global config file retrieval
config: rename global config function
config: format newlines
A few tests to "git commit -o <pathspec>" and "git commit -i
<pathspec>" has been added.
* gt/test-commit-o-i-options:
t7501: add tests for --amend --signoff
t7501: add tests for --include and --only
CI for GitLab learned to drive macOS jobs.
* ps/gitlab-ci-macos:
ci: add macOS jobs to GitLab CI
ci: make p4 setup on macOS more robust
ci: handle TEST_OUTPUT_DIRECTORY when printing test failures
Makefile: detect new Homebrew location for ARM-based Macs
t7527: decrease likelihood of racing with fsmonitor daemon
Completion update to prepare for reftable
* ps/completion-with-reftable-fix:
completion: treat dangling symrefs as existing pseudorefs
completion: silence pseudoref existence check
completion: improve existence check for pseudo-refs
t9902: verify that completion does not print anything
completion: discover repo path in `__git_pseudoref_exists ()`
Tweak a few tests not to manually modify the reference database
(hence easier to work with other backends like reftable).
* jt/tests-with-reftable:
t5541: remove lockfile creation
t1401: remove lockfile creation
When given an existing but unreadable file as a configuration file,
gitweb behaved as if the file did not exist at all, but now it
errors out. This is a change that may break backward compatibility.
* mj/gitweb-unreadable-config-error:
gitweb: die when a configuration file cannot be read
Instead of manually creating refs/ hierarchy on disk upon a
creation of a secondary worktree, which is only usable via the
files backend, use the refs API to populate it.
* ps/worktree-refdb-initialization:
builtin/worktree: create refdb via ref backend
worktree: expose interface to look up worktree by name
builtin/worktree: move setup of commondir file earlier
refs/files: skip creation of "refs/{heads,tags}" for worktrees
setup: move creation of "refs/" into the files backend
refs: prepare `refs_init_db()` for initializing worktree refs
The error message given when "git branch -d branch" fails due to
commits unique to the branch has been split into an error and a new
conditional advice message.
* rj/advice-delete-branch-not-fully-merged:
branch: make the advice to force-deleting a conditional one
advice: fix an unexpected leading space
advice: sort the advice related lists
Comment updates to help developers not to attempt to modify
messages from plumbing commands that must stay constant.
It might make sense to reassess the plumbing needs every few years,
but that should be done as a separate effort.
* es/some-up-to-date-messages-must-stay:
messages: mark some strings with "up-to-date" not to touch
Custom merge drivers need access to the names of the revisions they
are working on, so that the merge conflict markers they introduce
can refer to those revisions. The placeholders '%S', '%X' and '%Y'
are introduced to this end.
Signed-off-by: Antonin Delpeuch <antonin@delpeuch.eu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch fixes a bug where fetch over http (or any helper) using the
v0 protocol may sometimes fail to auto-follow tags. The bug comes from
61c7711cfe (sha1-file: use loose object cache for quick existence check,
2018-11-12). But to explain why (and why this is the right fix), let's
take a step back.
After fetching a pack, the object database has changed, but we may still
hold in-memory caches that are now out of date. Traditionally this was
just the packed_git list, but 61c7711cfe started using a loose-object
cache, as well.
Usually these caches are invalidated automatically. When an expected
object cannot be found, the low-level object lookup routines call
reprepare_packed_git(), which re-scans the set of packs (and thanks to
some preparatory patches ahead of 61c7711cfe, throws away the loose
object cache). But not all calls do this! In some cases we expect that
the object might not exist, and pass OBJECT_INFO_QUICK to tell the
low-level routines not to bother re-scanning. And the tag auto-following
code is one such caller, since we are asking about oids that the other
side has (but we might not have locally).
To deal with this, we explicitly call reprepare_packed_git() ourselves
after fetching a pack; this goes all the way back to 48ec3e5c07
(Incorporate fetched packs in future object traversal, 2008-06-15). But
that only helps if we call fetch_pack() in the main fetch process. When
we're using a transport helper, it happens in a separate sub-process,
and the parent process is left with old values. So this is only a
problem with protocols which require a separate helper process (like
http).
This patch fixes it by teaching the parent process in the transport
helper relationship to make that same reprepare call after the helper
finishes fetching.
You might be left with some lingering questions, like:
1. Why only the v0 protocol, and not v2? It's because in v2 the child
helper doesn't actually run fetch_pack(); it merely establishes a
tunnel over which the main process can talk to the remote side (so
the fetch_pack() and reprepare happen in the main process).
2. Wouldn't we have the same bug even before the 61c7711cfe added
the loose object cache? For example, when we store the fetch as a
pack locally, wouldn't our packed_git list still be out of date?
If we store a pack, everything works because other parts of the
fetch process happen to trigger a call to reprepare_packed_git().
In particular, before storing whatever ref was originally
requested, we'll make sure we have the pointed-to object, and that
call happens without the QUICK flag. So in that case we'll see that
we don't know about it, reprepare, and then repeat our lookup. And
now we _do_ know about the pack, and further calls with QUICK will
find its contents.
Whereas when we unpack the result into loose objects, we never get
that same invalidation trigger. We didn't have packs before, and we
don't after. But when we do the loose object lookup, we find the
object. There's no way to realize that we didn't have the object
before the pack, and that having it now means things have changed
(in theory we could do a superfluous cache lookup to see that it
was missing from the old cache; but depending on the tags the other
side showed us, we might not even have filled in that part of the
cache earlier).
3. Why does the included test use "--depth 1"? This is important
because without it, we happen to invalidate the cache as a side
effect of other parts of the fetch process. What happens in a
non-shallow fetch is something like this:
1. we call find_non_local_tags() once before actually getting the
pack, to see if there are any tags we can fill in from what we
already have. This fills in the cache (which is obviously
missing objects we're about to fetch).
2. before fetching the actual pack, fetch_and_consume_refs()
calls check_exist_and_connected(), to see if we even need to
fetch a pack at all. This doesn't use QUICK (though arguably
it could, as it's purely an optimization). And since it sees
there are objects we are indeed missing, that triggers a
reprepare_packed_git() call, which throws out the loose object
cache.
3. after fetching, now we call find_non_local_tags() again. And
since step (2) invalidated our loose object cache, we find
the new objects and create the tags.
So everything works, but mostly due to luck. Whereas in a fetch
with --depth, we skip step 2 entirely, and thus the out-of-date
cache is still in place for step 3, giving us the wrong answer.
So the test works with a small "--depth 1" fetch, which makes sure that
we don't store the pack from the other side, and that we don't trigger
the accidental cache invalidation. And of course it forces the use of
v0 along with using the http protocol.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move a few tests into t0601 since they specifically test the packed-refs
file and thus are specific to the reffiles backend.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move two tests into t0600 since they write loose reflog refs manually
and thus are specific to the reffiles backend.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In this test, the calls to cut(1) are only used to verify that the
contents of the reflog entry look as expected. By replacing these with
git-reflog(1) calls, we can make this test ref-backend agnostic.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move this test to t0600 with other reffiles specific tests since it
checks for loose refs and is specific to the reffiles backend.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move this test into t0601 with other reffiles pack-refs specific tests
since it checks for individual loose refs and thus is specific to the
reffiles backend.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move these tests to t0600 with other reffiles specific tests since they
do things like take a lock on an individual ref, and write directly into
the reflog refs.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move this test to t0600 with the rest of the tests that are specific to
reffiles. This test reaches into reflog directories manually, and so are
specific to reffiles.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move this test to t0601 with other reffiles specific pack-refs tests
since it is reffiles specific in that it looks into the loose refs
directory for an assertion.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These tests modify loose refs manually and are specific to the reffiles
backend. Move these to t0600 to be part of a test suite of reffiles
specific tests.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This test can be re-written to use Git commands rather than writing a
manual ref in the reflog. This way this test no longer needs the
REFFILES prerequisite.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
