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rscharfe and others added 25 commits January 9, 2026 18:36
The config setting core.maxTreeDepth is stored in a global variable and
populated by the function git_default_core_config.  This won't work if
we need to access multiple repositories with different values of that
setting in the same process.  Store the setting in struct repo_settings
instead and track it separately for each repository.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add variants of parse_tree(), parse_tree_gently() and
parse_tree_indirect() that allow using an arbitrary repository.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1b374ad (add-interactive: stop using `the_repository`, 2024-12-17)
replaced explicit uses of the_repository.  parse_tree_indirect() uses it
internally, though, so call repo_parse_tree_indirect() instead and hand
it the correct repository.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use the passed in repository instead of the implicit the_repository when
parsing the tree.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
19be71d (delta-islands: stop depending on `the_repository`,
2025-03-10) replaced explicit uses of the_repository.  parse_tree() uses
it internally, though, so call repo_parse_tree() instead and hand it the
correct repository.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1a6768d (pack-bitmap-write: stop depending on `the_repository`,
2025-03-10) replaced explicit uses of the_repository.  parse_tree() uses
it internally, though, so call repo_parse_tree() instead and hand it the
correct repository.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use the passed in repository instead of the implicit the_repository when
parsing the tree.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
e092073 (tree.c: make read_tree*() take 'struct repository *',
2018-11-18) replaced explicit uses of the_repository.  parse_tree() uses
it internally, though, so call repo_parse_tree() instead and hand it the
correct repository.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Push the use of the_repository to the remaining callers by turning the
compatibility wrappers into macros, whose use still requires
USE_THE_REPOSITORY_VARIABLE to be defined.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add and apply a semantic patch to convert calls to parse_tree() and
friends to the corresponding variant that takes a repository argument,
to allow the functions that implicitly use the_repository to be retired
once all potential in-flight topics are settled and converted as well.

The changes in .c files were generated by Coccinelle, but I fixed a
whitespace bug it would have introduced to builtin/commit.c.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
…orrupt-checksum-fix

* ps/repack-avoid-noop-midx-rewrite:
  midx-write: skip rewriting MIDX with `--stdin-packs` unless needed
  midx-write: extract function to test whether MIDX needs updating
  midx: fix `BUG()` when getting preferred pack without a reverse index
In 6ce9d55 (midx-write: skip rewriting MIDX with `--stdin-packs`
unless needed, 2025-12-10), an extra 'test_done' was added, causing the
test script to finish before having run all of its tests.

Dropping this extraneous 'test_done' exposes a bug from commit
6ce9d55 that causes a subsequent test to fail. Mark that test with a
'test_expect_failure' for now, and the subsequent commit will explain
and fix the bug.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 6ce9d55 (midx-write: skip rewriting MIDX with `--stdin-packs`
unless needed, 2025-12-10), the MIDX machinery learned how to optimize
out unnecessary writes with "--stdin-packs".

In order to do this, it compares the contents of the in-progress write
against a MIDX loaded directly from the object store. We load a separate
MIDX (as opposed to checking our update relative to "ctx.m") because the
MIDX code does not reuse an existing MIDX with --stdin-packs, and always
leaves "ctx.m" as NULL. See commit 0c5a62f (midx-write.c: do not
read existing MIDX with `packs_to_include`, 2024-06-11) for details on
why.

If "ctx.m" is non-NULL, however, it is guaranteed to be checksum-valid,
since we only assign "ctx.m" when "midx_checksum_valid()" returns true.
Since the same guard does not exist for the MIDX we pass to
"midx_needs_update()", we may ignore on-disk corruption when determining
whether or not we can optimize out the write.

Add a similar guard within "midx_needs_update()" to prevent such an
issue.

A more robust fix would involve revising 0c5a62f and teaching the
MIDX generation code how to reuse an existing MIDX even when invoked
with "--stdin-packs", such that we could avoid side-loading the MIDX
directly from the object store in order to call "midx_needs_update()".
For now, pursue the minimal fix.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is currently not possible to combine "--exclude-promisor-objects"
with "--stdin-packs" because both flags want to set up a revision walk
to enumerate the objects to pack. In a subsequent commit though we want
to extend geometric repacks to support promisor objects, and for that we
need to handle the combination of both flags.

There are two cases we have to think about here:

  - "--stdin-packs" asks us to pack exactly the objects part of the
    specified packfiles. It is somewhat questionable what to do in the
    case where the user asks us to exclude promisor objects, but at the
    same time explicitly passes a promisor pack to us. For now, we
    simply abort the request as it is self-contradicting. As we have
    also been dying before this commit there is no regression here.

  - "--stdin-packs=follow" does the same as the first flag, but it also
    asks us to include all objects transitively reachable from any
    object in the packs we are about to repack. This is done by doing
    the revision walk mentioned further up. Luckily, fixing this case is
    trivial: we only need to modify the revision walk to also set the
    `exclude_promisor_objects` field.

Note that we do not support the "--exclude-promisor-objects-best-effort"
flag for now as we don't need it to support geometric repacking with
promisor objects.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're about to add a second caller that wants to compute the repacking
split for a set of packfiles. Split out the function that computes this
split to prepare for that.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're about to add a second caller that wants to finalize repacking of
promisor objects. Split out the function which does this to prepare for
that.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're about to add a second caller that wants to remove redundant packs
after a geometric repack. Split out the function which does this to
prepare for that.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When performing a fetch with an object filter, we mark the resulting
packfile as a promisor pack. An object part of such a pack may miss any
of its referenced objects, and Git knows to handle this case by fetching
any such missing objects from the promisor remote.

The "promisor" property needs to be retained going forward. So every
time we pack a promisor object, the resulting pack must be marked as a
promisor pack. git-repack(1) does this already: when a repository has a
promisor remote, it knows to pass "--exclude-promisor-objects" to the
git-pack-objects(1) child process. Promisor packs are written separately
when doing an all-into-one repack via `repack_promisor_objects()`.

But we don't support promisor objects when doing a geometric repack yet.
Promisor packs do not get any special treatment there, as we simply
merge promisor and non-promisor packs. The resulting pack is not even
marked as a promisor pack, which essentially corrupts the repository.

This corruption couldn't happen in the real world though: we pass both
"--exclude-promisor-objects" and "--stdin-packs" to git-pack-objects(1)
if a repository has a promisor remote, but as those options are mutually
exclusive we always end up dying. And while we made those flags
compatible with one another in a preceding commit, we still end up dying
in case git-pack-objects(1) is asked to repack a promisor pack.

There's multiple ways to fix this:

  - We can exclude promisor packs from the geometric progression
    altogether. This would have the consequence that we never repack
    promisor packs at all. But in a partial clone it is quite likely
    that the user generates a bunch of promisor packs over time, as
    every backfill fetch would create another one. So this doesn't
    really feel like a sensible option.

  - We can adapt git-pack-objects(1) to support repacking promisor packs
    and include them in the normal geometric progression. But this would
    mean that the set of promisor objects expands over time as the packs
    are merged with normal packs.

  - We can use a separate geometric progression to repack promisor
    packs.

The first two options both have significant downsides, so they aren't
really feasible. But the third option fixes both of these downsides: we
make sure that promisor packs get merged, and at the same time we never
expand the set of promisor objects beyond the set of objects that are
already marked as promisor objects.

Implement this strategy so that geometric repacking works in partial
clones.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The documentation claims that --get-urlmatch is replaced by

  git config get --all --show-names --url=<URL> <name>

However, --url cannot be combined with --all, and this command
fails in practice.

Update the replacement to use only --url, which matches the
actual behavior of --get-urlmatch.

Signed-off-by: Pushkar Singh <pushkarkumarsingh1970@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
035c7de (cocci: apply the "revision.h" part of
"the_repository.pending", 2023-03-28) removed the last of the repo-less
functions and macros mentioned in the_repository.cocci at the time.  No
stragglers appeared since then.  Remove the applied rules now that they
have outlived their usefulness.

Also add a reminder to eventually remove the just added rules for
tree.h.

Suggested-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git repack --geometric" did not work with promisor packs, which
has been corrected.

* ps/geometric-repacking-with-promisor-remotes:
  builtin/repack: handle promisor packs with geometric repacking
  repack-promisor: extract function to remove redundant packs
  repack-promisor: extract function to finalize repacking
  repack-geometry: extract function to compute repacking split
  builtin/pack-objects: exclude promisor objects with "--stdin-packs"
The logic that avoids reusing MIDX files with a wrong checksum was
broken, which has been corrected.

* tb/midx-write-corrupt-checksum-fix:
  midx-write.c: assume checksum-invalid MIDXs require an update
  t/t5319-multi-pack-index.sh: drop early 'test_done'
Docfix.

* ps/config-doc-get-urlmatch-fix:
  Documentation/config: fix replacement for --get-urlmatch
Remove implicit reliance on the_repository global in the APIs
around tree objects and make it explicit which repository to work
in.

* rs/tree-wo-the-repository:
  cocci: remove obsolete the_repository rules
  cocci: convert parse_tree functions to repo_ variants
  tree: stop using the_repository
  tree: use repo_parse_tree()
  path-walk: use repo_parse_tree_gently()
  pack-bitmap-write: use repo_parse_tree()
  delta-islands: use repo_parse_tree()
  bloom: use repo_parse_tree()
  add-interactive: use repo_parse_tree_indirect()
  tree: add repo_parse_tree*()
  environment: move access to core.maxTreeDepth into repo settings
Signed-off-by: Junio C Hamano <gitster@pobox.com>
@pull pull bot locked and limited conversation to collaborators Jan 23, 2026
@pull pull bot added the ⤵️ pull label Jan 23, 2026
@pull pull bot merged commit 1faf5b0 into turkdevops:master Jan 23, 2026
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5 participants