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Taylor Blau fd2739b159 pack-bitmap: handle duplicate pack entries during MIDX reuse 
A MIDX pseudo-pack assigns one bit position to each selected OID. Its
preferred-pack fast paths handle duplicate OIDs across packs in the
MIDX, where the MIDX chooses one copy, but assume that each individual
pack contains one entry per OID.

Consider a preferred pack ordered [A, B, A, C]. The MIDX retains one
copy of A, leaving three pseudo-pack positions for four physical
entries. This creates two problems:

 - In MIDX-backed single-pack reuse, bitmap_nr came from
   pack->num_objects and therefore counted both copies of A. Read the
   selected count from the root MIDX layer BTMP chunk instead. If that
   layer has no BTMP chunk, skip pack reuse and let the ordinary packing
   path handle the bitmap-selected objects. MIDXs without BTMP lose
   preferred-pack reuse until rewritten, rather than requiring a scan of
   the entire pseudo-pack to retain an optional optimization.

 - Correcting the range length still does not align the two orderings.
   Once one copy of A is omitted, MIDX position N need not name physical
   pack entry N.

That mismatch matters during both selection and output. Whole-word
selection bypasses the per-object check that the exact physical base of
a delta is present. Verbatim reuse copies the first N pack entries for
the first N bits. The per-object writer likewise used each bit as a
physical pack position.

Use the direct mapping only when the range begins at zero and its
selected count equals the physical entry count. Since selected entries
remain in pack-offset order, equal counts mean that none was omitted and
the two positions coincide.

For every other MIDX range, let whole-word selection fall through to
the existing per-bit path, which resolves the selected MIDX offset to a
physical pack position before checking the delta base. Disable verbatim
prefix reuse, and perform the same translation in the per-object writer.

Leave classic single-pack bitmap handling unchanged. The production
writer creates those bitmaps only for the pack it just wrote, which has
one entry per OID. The test helper can target an existing pack, but
rejects duplicate OIDs.

Cover the A, B, A, C case in a MIDX-backed preferred pack. Check reuse
with BTMP, then hide BTMP and check that the optional reuse path is
skipped. Also make B a delta against the omitted copy of A and require
normal packing to handle it.

Signed-off-by: Taylor Blau <ttaylorr@openai.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 		2026-07-24 19:05:11 -07:00
.github Merge branch 'js/ci-dockerized-pid-limit' 2026-07-16 23:05:47 -07:00
Documentation The 7th batch 2026-07-22 10:30:55 -07:00
bin-wrappers
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block-sha1
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builtin pack-bitmap: handle duplicate pack entries during MIDX reuse 2026-07-24 19:05:11 -07:00
ci Merge branch 'ps/reftable-hardening' 2026-07-19 10:42:15 -07:00
compat Merge branch 'ty/migrate-ignorecase' 2026-07-19 10:42:19 -07:00
compiler-tricks
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contrib Merge branch 'sn/osxkeychain-rust-universal' 2026-07-19 10:42:17 -07:00
ewah
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git-gui Merge branch 'master' of https://github.com/j6t/git-gui 2026-07-16 10:48:52 -07:00
gitk-git Merge branch 'master' of https://github.com/j6t/gitk 2026-07-16 10:47:40 -07:00
gitweb
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mergetools
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negotiator prio-queue: rename .nr to .nr_ and add accessor helpers 2026-06-09 11:11:46 -07:00
odb Merge branch 'ps/odb-for-each-object-filter' 2026-07-22 10:30:54 -07:00
oss-fuzz Merge branch 'ps/reftable-hardening' 2026-07-19 10:42:15 -07:00
perl
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po Merge branch 'spanish_pr_bis' of github.com:basuradeluis/gitkbis 2026-07-16 10:53:01 +02:00
refs Merge branch 'kk/reftable-tombstone-quadratic-fix' 2026-07-19 10:42:20 -07:00
reftable Merge branch 'js/coverity-fixes-null-safety' 2026-07-19 10:42:20 -07:00
sha1 hash: add platform-specific discard functions 2026-07-02 09:50:47 -07:00
sha1collisiondetection@855827c583
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sha1dc
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sha256 hash: add platform-specific discard functions 2026-07-02 09:50:47 -07:00
src Enable Rust by default 2026-04-09 17:25:36 -07:00
subprojects
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t pack-bitmap: handle duplicate pack entries during MIDX reuse 2026-07-24 19:05:11 -07:00
templates
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tools hash: convert remaining direct function calls 2026-07-07 21:56:00 -07:00
trace2 hash: use git_hash_init() consistently 2026-07-07 21:56:00 -07:00
xdiff Merge branch 'mm/diff-U-takes-no-negative-values' 2026-05-25 09:40:07 +09:00
.b4-config b4: introduce configuration for the Git project 2026-06-15 10:13:28 -07:00
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.editorconfig editorconfig: fix style not applying to subdirs anymore 2026-03-11 10:30:51 -07:00
.gitattributes Merge branch 'kw/gitattributes-typofix' 2026-06-21 16:41:37 -07:00
.gitignore Merge branch 'mm/git-url-parse' 2026-05-21 12:06:48 +09:00
.gitlab-ci.yml gitlab-ci: enable "GIT_TEST_LONG" 2026-07-06 07:21:57 -07:00
.gitmodules
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.mailmap mailmap: map Taylor Blau's work address 2026-07-09 09:43:23 -07:00
.tsan-suppressions transport-helper: fix TSAN race in transfer_debug() 2026-06-09 14:05:42 -07:00
CODE_OF_CONDUCT.md
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COPYING
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Cargo.toml
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GIT-BUILD-OPTIONS.in
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GIT-VERSION-FILE.in
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GIT-VERSION-GEN Start Git 2.56 cycle 2026-07-06 15:50:25 -07:00
INSTALL
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LGPL-2.1
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Makefile Merge branch 'sn/osxkeychain-rust-universal' 2026-07-19 10:42:17 -07:00
README.md README: add GitLab CI badge to make it more discoverable 2026-07-06 07:21:57 -07:00
RelNotes Start Git 2.56 cycle 2026-07-06 15:50:25 -07:00
SECURITY.md
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abspath.c
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add-patch.c Merge branch 'sp/add-patch-with-fewer-the-repository' 2026-04-07 14:59:26 -07:00
add-patch.h
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advice.c push: suggest <remote> <branch> for a slash slip 2026-06-27 19:36:43 -07:00
advice.h push: suggest <remote> <branch> for a slash slip 2026-06-27 19:36:43 -07:00
alias.c alias: restore support for simple dotted aliases 2026-04-25 19:22:52 +09:00
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apply.c Merge branch 'ty/migrate-ignorecase' 2026-07-19 10:42:19 -07:00
apply.h apply: report input location in header parsing errors 2026-03-17 11:08:24 -07:00
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archive.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
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attr.c Merge branch 'ps/setup-drop-global-state' 2026-07-06 15:50:19 -07:00
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bisect.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
bisect.h
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blame.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
blame.h
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bloom.c bloom: make bloom-filter slab initialization idempotent 2026-07-01 08:44:06 -07:00
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builtin.h Merge branch 'mm/git-url-parse' 2026-05-21 12:06:48 +09:00
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bundle.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
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cache-tree.c Merge branch 'jt/receive-pack-use-odb-transactions' 2026-07-22 10:30:53 -07:00
cache-tree.h
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cbtree.c cbtree: allow using arbitrary wrapper structures for nodes 2026-05-15 04:50:45 +09:00
cbtree.h cbtree: allow using arbitrary wrapper structures for nodes 2026-05-15 04:50:45 +09:00
chdir-notify.c chdir-notify: drop unused `chdir_notify_reparent()` 2026-06-26 08:27:19 -07:00
chdir-notify.h chdir-notify: drop unused `chdir_notify_reparent()` 2026-06-26 08:27:19 -07:00
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combine-diff.c Merge branch 'js/objects-larger-than-4gb-on-windows-more' 2026-06-21 16:41:38 -07:00
command-list.txt Merge branch 'mm/git-url-parse' 2026-05-21 12:06:48 +09:00
commit-graph.c Merge branch 'kk/commit-graph-topo-levels-fix' 2026-07-19 10:42:19 -07:00
commit-graph.h doc: fix typos via codespell 2026-06-08 00:21:35 +09:00
commit-reach.c Merge branch 'kk/commit-reach-find-all-fix' 2026-07-19 10:42:16 -07:00
commit-reach.h commit-reach: early exit paint_down_to_common for single merge-base 2026-05-12 09:33:43 +09:00
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commit.c Merge branch 'kk/prio-queue-get-put-fusion' 2026-07-13 08:27:27 -07:00
commit.h Merge branch 'kk/streaming-walk-pqueue' 2026-06-16 09:01:02 -07:00
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common-init.c setup: split up concerns of `setup_git_env_internal()` 2026-07-07 10:49:40 -07:00
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config.c config: add "worktree" and "worktree/i" includeIf conditions 2026-07-10 08:19:15 -07:00
config.h Merge branch 'hn/config-typo-advice' 2026-06-15 07:41:59 -07:00
config.mak.dev Merge branch 'ps/clang-w-glibc-2.43-and-_Generic' into maint-2.54 2026-05-21 12:23:51 +09:00
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config.mak.uname Merge branch 'hn/macos-linker-warning' 2026-06-22 20:05:04 -07:00
configure.ac
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connect.c bundle-uri: drain remaining response on invalid bundle-uri lines 2026-07-08 13:54:16 -07:00
connect.h Merge branch 'jk/connect-service-enum' 2026-06-02 16:15:28 +09:00
connected.c connected: search promisor objects generically 2026-06-25 13:20:20 -07:00
connected.h
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convert.c hex: add and use strbuf_add_oid_hex() 2026-05-14 15:59:25 +09:00
convert.h
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copy.c
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copy.h
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credential.c
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csum-file.c Merge branch 'jk/hash-algo-leak-fixes' 2026-07-16 23:05:47 -07:00
csum-file.h Merge branch 'jk/hash-algo-leak-fixes' 2026-07-16 23:05:47 -07:00
ctype.c
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daemon.c Merge branch 'st/daemon-sockaddr-fixes' 2026-06-11 04:31:17 -07:00
date.c docs: fix typos 2026-06-05 22:27:24 +09:00
date.h
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decorate.c
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decorate.h
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delta-islands.c docs: fix typos and grammar 2026-05-30 07:07:27 +09:00
delta-islands.h
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delta.h packfile,delta: drop the `cast_size_t_to_ulong()` wrappers 2026-06-15 07:45:41 -07:00
diagnose.c
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diagnose.h
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diff.c Merge branch 'jk/hash-algo-leak-fixes' 2026-07-16 23:05:47 -07:00
diff.h diff: reject negative values for -U/--unified 2026-05-13 10:13:26 +09:00
diffcore-break.c diffcore-break: guard against NULLed queue entries in merge loop 2026-07-10 08:13:54 -07:00
diffcore-delta.c
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diffcore-order.c
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diffcore-pickaxe.c docs: fix typos and grammar 2026-05-30 07:07:27 +09:00
diffcore-rename.c
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diffcore-rotate.c
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diffcore.h line-log: route -L output through the standard diff pipeline 2026-03-16 21:05:42 -07:00
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dir.c Merge branch 'ty/migrate-ignorecase' 2026-07-19 10:42:19 -07:00
dir.h ignore: note info/exclude lives in GIT_COMMON_DIR, not GIT_DIR 2026-05-13 10:25:52 +09:00
editor.c
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editor.h
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entry.c Merge branch 'js/objects-larger-than-4gb-on-windows-more' 2026-06-21 16:41:38 -07:00
entry.h
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environment.c Merge branch 'ty/migrate-ignorecase' 2026-07-19 10:42:19 -07:00
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exec-cmd.c
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fetch-negotiator.h negotiator: add have_sent() interface 2026-05-20 11:33:24 +09:00
fetch-pack.c prio-queue: rename .nr to .nr_ and add accessor helpers 2026-06-09 11:11:46 -07:00
fetch-pack.h fetch: add --negotiation-include option for negotiation 2026-05-20 11:33:24 +09:00
fmt-merge-msg.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
fmt-merge-msg.h
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for-each-ref.h
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fsck.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
fsck.h fsck: store repository in fsck options 2026-03-23 08:33:10 -07:00
fsmonitor--daemon.h
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fsmonitor-ipc.c fsmonitor: close inherited file descriptors and detach in daemon 2026-04-15 08:44:33 -07:00
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fsmonitor-path-utils.h
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fsmonitor-settings.c
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fsmonitor-settings.h
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fsmonitor.c config: use repo_ignore_case() to access core.ignorecase 2026-06-19 10:04:56 -07:00
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gettext.c
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git-archimport.perl
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git-compat-util.h Merge branch 'rs/use-builtin-add-overflow-explicitly-on-clang' 2026-05-27 14:15:45 +09:00
git-curl-compat.h http: add support for HTTP 429 rate limit retries 2026-03-17 09:14:19 -07:00
git-cvsexportcommit.perl
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git-mergetool--lib.sh
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git-send-email.perl Merge branch 'sp/send-email-validate-charset' 2026-03-12 10:56:05 -07:00
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git-sh-setup.sh
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git-svn.perl
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git-web--browse.sh
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git-zlib.c zlib: properly clamp to uLong 2026-06-18 09:46:56 -07:00
git-zlib.h git-zlib: handle data streams larger than 4GB 2026-05-09 11:25:31 +09:00
git.c setup: unify setup of shallow file 2026-07-07 10:49:40 -07:00
git.rc.in
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gpg-interface.c gpg-interface: fix strip_cr_before_lf to only remove CR before LF 2026-06-24 09:49:05 -07:00
gpg-interface.h fast-import: add 'abort-if-invalid' mode to '--signed-commits=<mode>' 2026-03-26 12:42:57 -07:00
graph.c graph: add truncation mark to capped lanes 2026-03-29 21:22:09 -07:00
graph.h
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grep.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
grep.h
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hash-lookup.c
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hash-lookup.h
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hash.c hash: check ctx->active flag in all wrapper functions 2026-07-07 21:56:00 -07:00
hash.h hash: make git_hash_discard() idempotent 2026-07-07 21:56:00 -07:00
hashmap.c
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hashmap.h
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help.c Merge branch 'jh/alias-i18n-fixes' into maint-2.54 2026-05-21 12:30:11 +09:00
help.h
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hex.c hex: add and use strbuf_add_oid_hex() 2026-05-14 15:59:25 +09:00
hex.h hex: add and use strbuf_add_oid_hex() 2026-05-14 15:59:25 +09:00
hook.c hook: allow hook.jobs=-1 to use all available CPU cores 2026-04-10 07:58:55 -07:00
hook.h Merge branch 'ak/typofixes' 2026-06-15 07:42:00 -07:00
http-backend.c setup: stop using `the_repository` in `enter_repo()` 2026-05-19 19:36:24 +09:00
http-fetch.c setup: stop using `the_repository` in `setup_git_directory_gently()` 2026-05-19 19:36:24 +09:00
http-push.c hash: use git_hash_init() consistently 2026-07-07 21:56:00 -07:00
http-walker.c Merge branch 'ps/odb-source-loose' 2026-06-11 04:31:18 -07:00
http.c Merge branch 'jk/hash-algo-leak-fixes' 2026-07-16 23:05:47 -07:00
http.h Merge branch 'jk/hash-algo-leak-fixes' 2026-07-16 23:05:47 -07:00
ident.c
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imap-send.c imap-send: avoid leaking the IMAP upload buffer 2026-07-05 09:12:10 -07:00
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line-log.c Merge branch 'jk/bloom-leak-fixes' 2026-07-15 13:24:19 -07:00
line-log.h line-log: integrate -L output with the standard log-tree pipeline 2026-05-29 14:06:21 +09:00
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list-objects-filter-options.c setup: stop using `the_repository` in `upgrade_repository_format()` 2026-05-19 19:36:25 +09:00
list-objects-filter-options.h
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list-objects-filter.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
list-objects-filter.h
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list-objects.c odb: rename `odb_has_object()` flags 2026-03-31 20:43:14 -07:00
list-objects.h
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lockfile.c
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lockfile.h
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log-tree.c log: improve --follow following renames for non-linear history 2026-06-22 05:45:09 -07:00
log-tree.h log: improve --follow following renames for non-linear history 2026-06-22 05:45:09 -07:00
loose.c loose: avoid closing invalid fd on error path 2026-07-05 09:12:09 -07:00
loose.h loose: refactor object map to operate on `struct odb_source_loose` 2026-06-01 18:47:18 +09:00
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mailinfo.c Merge branch 'vp/http-rate-limit-retries' 2026-04-01 10:28:18 -07:00
mailinfo.h
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mailmap.c Merge branch 'ps/setup-drop-global-state' 2026-07-06 15:50:19 -07:00
mailmap.h
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match-trees.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
match-trees.h
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mem-pool.c
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mem-pool.h
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merge-blobs.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
merge-blobs.h odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
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merge-ort.c Merge branch 'en/ort-harden-against-corrupt-trees' 2026-07-06 15:50:20 -07:00
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meson.build Merge branch 'ps/reftable-hardening' 2026-07-19 10:42:15 -07:00
meson_options.txt Merge branch 'ps/reftable-hardening' 2026-07-19 10:42:15 -07:00
midx-write.c Merge branch 'ps/odb-source-packed' 2026-07-06 15:50:21 -07:00
midx.c midx: verify duplicate pack entries by OID and offset 2026-07-24 19:05:11 -07:00
midx.h midx: refactor interfaces to work on "packed" source 2026-06-17 05:00:01 -07:00
name-hash.c config: use repo_ignore_case() to access core.ignorecase 2026-06-19 10:04:56 -07:00
name-hash.h
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notes-cache.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
notes-cache.h
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notes-merge.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
notes-merge.h
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notes-utils.c
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notes-utils.h
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notes.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
notes.h
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object-file-convert.c Merge branch 'bc/sha1-256-interop-02' 2026-03-12 10:56:02 -07:00
object-file-convert.h
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object-file.c Merge branch 'jt/receive-pack-use-odb-transactions' 2026-07-22 10:30:53 -07:00
object-file.h Merge branch 'jt/receive-pack-use-odb-transactions' 2026-07-22 10:30:53 -07:00
object-name.c Merge branch 'ps/setup-split-discovery-and-setup' 2026-07-19 10:42:15 -07:00
object-name.h object-name: turn INTERPRET_BRANCH_* constants into enum values 2026-03-18 12:52:29 -07:00
object.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
object.h commit-reach: deduplicate queue entries in paint_down_to_common 2026-05-26 07:17:26 +09:00
odb.c Merge branch 'ps/odb-drop-whence' 2026-07-15 13:24:18 -07:00
odb.h Merge branch 'ps/odb-for-each-object-filter' 2026-07-22 10:30:54 -07:00
oid-array.c
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oid-array.h
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oidmap.c
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oidmap.h
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oidset.c
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oidset.h
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oidtree.c oidtree: add ability to store data 2026-05-15 04:50:45 +09:00
oidtree.h oidtree: add ability to store data 2026-05-15 04:50:45 +09:00
pack-bitmap-write.c Merge branch 'kk/prio-queue-get-put-fusion' 2026-07-13 08:27:27 -07:00
pack-bitmap.c pack-bitmap: handle duplicate pack entries during MIDX reuse 2026-07-24 19:05:11 -07:00
pack-bitmap.h odb: introduce object filters to `odb_for_each_object()` 2026-07-15 07:19:16 -07:00
pack-check.c hash: use git_hash_init() consistently 2026-07-07 21:56:00 -07:00
pack-mtimes.c
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pack-mtimes.h
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pack-objects.c
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pack-objects.h pack-objects: use size_t for in-core object sizes 2026-06-15 07:45:41 -07:00
pack-refs.c
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pack-refs.h
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pack-revindex.c midx: refactor interfaces to work on "packed" source 2026-06-17 05:00:01 -07:00
pack-revindex.h
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pack-write.c hash: use git_hash_init() consistently 2026-07-07 21:56:00 -07:00
pack.h builtin/fsck: stop using `the_repository` when checking packed objects 2026-03-23 08:33:11 -07:00
packfile-list.c packfile: split out packfile list logic 2026-06-17 05:00:00 -07:00
packfile-list.h packfile: split out packfile list logic 2026-06-17 05:00:00 -07:00
packfile.c packfile: recover delta cycles through duplicate entries 2026-07-24 19:05:11 -07:00
packfile.h Merge branch 'ps/odb-source-packed' 2026-07-06 15:50:21 -07:00
pager.c pager: explicitly cast away strchr() constness 2026-04-01 22:08:51 -07:00
pager.h
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parallel-checkout.c
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parallel-checkout.h
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parse-options-cb.c
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parse-options.c parse-options: exit 0 on -h 2026-07-07 17:48:57 -07:00
parse-options.h parse-options: add a separate case for help output on error 2026-07-07 17:48:56 -07:00
parse.c config: add a repo_config_get_uint() helper 2026-04-10 07:58:53 -07:00
parse.h config: add a repo_config_get_uint() helper 2026-04-10 07:58:53 -07:00
patch-delta.c packfile,delta: drop the `cast_size_t_to_ulong()` wrappers 2026-06-15 07:45:41 -07:00
patch-ids.c
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patch-ids.h patch-ids.h: add missing trailing parenthesis in documentation comment 2026-05-15 04:24:54 +09:00
path-walk.c Merge branch 'kk/prio-queue-get-put-fusion' 2026-07-13 08:27:27 -07:00
path-walk.h path-walk: support `object:type` filter 2026-05-24 18:41:07 +09:00
path.c path: extract format_path() and use in rev-parse 2026-06-23 21:15:52 -07:00
path.h Merge branch 'jk/repo-info-path-keys' 2026-07-06 15:50:23 -07:00
pathspec.c setup: stop using `the_repository` in `prefix_path()` 2026-05-19 19:36:24 +09:00
pathspec.h
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pkt-line.c
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pkt-line.h pkt-line: make packet_reader.line non-const 2026-04-01 22:08:52 -07:00
preload-index.c
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preload-index.h
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pretty.c Merge branch 'rs/strbuf-add-oid-hex' 2026-06-09 10:04:50 +09:00
pretty.h
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prio-queue.c prio-queue: fold lazy_queue into prio_queue for automatic get+put fusion 2026-06-09 11:11:46 -07:00
prio-queue.h prio-queue: fold lazy_queue into prio_queue for automatic get+put fusion 2026-06-09 11:11:46 -07:00
progress.c
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progress.h
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promisor-remote.c Merge branch 'cc/promisor-auto-config-url-more' 2026-07-06 15:50:19 -07:00
promisor-remote.h promisor-remote: document caller filtering contract 2026-05-15 04:24:54 +09:00
prompt.c
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prompt.h
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protocol-caps.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
protocol-caps.h
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protocol.c
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protocol.h
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prune-packed.c
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prune-packed.h
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pseudo-merge.c pack-bitmap: prevent pattern leak on pseudo-merge re-assignment 2026-05-12 10:36:18 +09:00
pseudo-merge.h
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quote.c quote: simplify internals of dequoting 2026-05-19 12:14:03 +09:00
quote.h quote: drop sq_dequote_to_argv() 2026-05-19 12:14:03 +09:00
range-diff.c range-diff: drop const to fix strstr() warnings 2026-04-01 22:08:53 -07:00
range-diff.h
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reachable.c treewide: convert users of `whence` to the new source field 2026-07-02 09:52:32 -07:00
reachable.h
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read-cache-ll.h read-cache: split out function to drop unmerged entries to stage 0 2026-07-01 09:56:52 -07:00
read-cache.c Merge branch 'jt/receive-pack-use-odb-transactions' 2026-07-22 10:30:53 -07:00
read-cache.h
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rebase-interactive.c
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rebase-interactive.h
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rebase.c
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rebase.h
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ref-filter.c Merge branch 'td/ref-filter-restore-prefix-iteration' 2026-07-06 15:50:20 -07:00
ref-filter.h
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reflog-walk.c
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reflog-walk.h
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reflog.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
reflog.h
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refs.c refs: protect against chicken-and-egg recursion 2026-06-26 08:27:19 -07:00
refs.h refs: move parsing of "core.logAllRefUpdates" back into ref stores 2026-06-26 08:27:19 -07:00
refspec.c refspec: fix typo in comment 2026-03-23 21:27:17 -07:00
refspec.h
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remote-curl.c Merge branch 'ps/setup-wo-the-repository' 2026-05-27 14:15:46 +09:00
remote.c remote: guard `remote_tracking()` against NULL remote 2026-07-10 08:13:54 -07:00
remote.h fetch: refactor do_fetch handling of followRemoteHEAD 2026-06-19 09:19:36 -07:00
repack-cruft.c
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repack-filtered.c
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repack-geometry.c midx: refactor interfaces to work on "packed" source 2026-06-17 05:00:01 -07:00
repack-midx.c midx: refactor interfaces to work on "packed" source 2026-06-17 05:00:01 -07:00
repack-promisor.c
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repack.c midx: refactor interfaces to work on "packed" source 2026-06-17 05:00:01 -07:00
repack.h repack: introduce `--write-midx=incremental` 2026-05-20 11:31:14 +09:00
replace-object.c
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replace-object.h
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replay.c Merge branch 'js/coverity-fixes-null-safety' 2026-07-19 10:42:20 -07:00
replay.h Merge branch 'ps/history-drop' 2026-07-15 13:24:19 -07:00
repo-settings.c refs: move parsing of "core.logAllRefUpdates" back into ref stores 2026-06-26 08:27:19 -07:00
repo-settings.h refs: move parsing of "core.logAllRefUpdates" back into ref stores 2026-06-26 08:27:19 -07:00
repository.c setup: move prefix into repository 2026-07-07 10:49:40 -07:00
repository.h setup: move prefix into repository 2026-07-07 10:49:40 -07:00
rerere.c hash: use git_hash_init() consistently 2026-07-07 21:56:00 -07:00
rerere.h
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reset.c reset: stop assuming that the caller passes in a clean index 2026-07-03 10:32:47 -07:00
reset.h reset: allow the caller to specify the current HEAD object 2026-07-03 10:32:47 -07:00
resolve-undo.c
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resolve-undo.h
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revision.c Merge branch 'kk/no-walk-pathspec-fix' 2026-07-22 10:30:55 -07:00
revision.h log: improve --follow following renames for non-linear history 2026-06-22 05:45:09 -07:00
run-command.c run-command: avoid `close(-1)` in `start_command()` error paths 2026-07-05 09:12:09 -07:00
run-command.h Merge branch 'pt/fsmonitor-linux' 2026-05-31 10:00:38 +09:00
sane-ctype.h
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scalar.c setup: stop using `the_repository` in `setup_git_directory()` 2026-05-19 19:36:25 +09:00
send-pack.c Merge branch 'ds/fetch-negotiation-options' 2026-05-27 14:15:45 +09:00
send-pack.h send-pack: pass negotiation config in push 2026-05-20 11:33:24 +09:00
sequencer.c Merge branch 'ps/history-drop' 2026-07-15 13:24:19 -07:00
sequencer.h Merge branch 'pw/status-rebase-todo' 2026-07-06 15:50:23 -07:00
serve.c
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serve.h
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server-info.c
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server-info.h
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setup.c Merge branch 'ps/setup-split-discovery-and-setup' 2026-07-19 10:42:15 -07:00
setup.h Merge branch 'ps/setup-split-discovery-and-setup' 2026-07-19 10:42:15 -07:00
sh-i18n--envsubst.c
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sha1dc_git.c hash algorithms: use size_t for section lengths 2026-06-16 09:02:33 -07:00
sha1dc_git.h hash algorithms: use size_t for section lengths 2026-06-16 09:02:33 -07:00
shallow.c Merge branch 'js/coverity-fixes-null-safety' 2026-07-19 10:42:20 -07:00
shallow.h setup: unify setup of shallow file 2026-07-07 10:49:40 -07:00
shared.mak
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shell.c
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shortlog.h
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sideband.c sideband: allow ANSI SGR with colon-separated subfields 2026-07-07 11:20:44 -07:00
sideband.h
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sigchain.c
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sigchain.h
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simple-ipc.h
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sparse-index.c environment: move "sparse_expect_files_outside_of_patterns" into `struct repo_config_values` 2026-06-03 08:36:48 +09:00
sparse-index.h
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split-index.c split-index: stop using the_repository and the_hash_algo 2026-03-19 12:01:24 -07:00
split-index.h
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stable-qsort.c
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statinfo.c environment: move "check_stat" into `struct repo_config_values` 2026-06-03 08:36:48 +09:00
statinfo.h
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strbuf.c strbuf: avoid redundant reset in strbuf_getwholeline() 2026-07-14 09:35:02 -07:00
strbuf.h strbuf: add strbuf_add_uint() 2026-05-13 00:48:42 +09:00
string-list.c hook: move unsorted_string_list_remove() to string-list.[ch] 2026-03-25 14:00:45 -07:00
string-list.h hook: move unsorted_string_list_remove() to string-list.[ch] 2026-03-25 14:00:45 -07:00
strmap.c
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strmap.h
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strvec.c
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strvec.h
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sub-process.c sub-process: use gentle handshake to avoid die() on startup failure 2026-06-02 07:48:57 +09:00
sub-process.h
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submodule-config.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
submodule-config.h
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submodule.c Merge branch 'ty/migrate-ignorecase' 2026-07-19 10:42:19 -07:00
submodule.h
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symlinks.c
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symlinks.h
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tag.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
tag.h
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tar.h
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tempfile.c builtin/maintenance: fix locking with "--detach" 2026-05-13 16:57:53 +09:00
tempfile.h builtin/maintenance: fix locking with "--detach" 2026-05-13 16:57:53 +09:00
thread-utils.c
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thread-utils.h
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tmp-objdir.c odb: stop including "odb/source.h" 2026-03-12 08:38:42 -07:00
tmp-objdir.h
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trace.c setup: move prefix into repository 2026-07-07 10:49:40 -07:00
trace.h
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trace2.c
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trace2.h
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trailer.c trailer: change strbuf in-place in unfold_value() 2026-05-16 22:11:07 +09:00
trailer.h
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transport-helper.c Merge branch 'ps/transport-helper-tsan-fix' 2026-06-17 11:10:11 -07:00
transport-internal.h connect: use "service" enum for "name" argument 2026-05-19 15:05:46 +09:00
transport.c environment: stop using `the_repository` in `is_bare_repository()` 2026-06-11 05:05:54 -07:00
transport.h Merge branch 'jk/connect-service-enum' 2026-06-02 16:15:28 +09:00
tree-diff.c
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tree-walk.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
tree-walk.h docs: fix typos and grammar 2026-05-30 07:07:27 +09:00
tree.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
tree.h
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unicode-width.h
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unimplemented.sh
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unix-socket.c
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unix-socket.h
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unix-stream-server.c
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unix-stream-server.h
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unpack-trees.c Merge branch 'ty/migrate-ignorecase' 2026-07-19 10:42:19 -07:00
unpack-trees.h
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upload-pack.c Merge branch 'ob/more-repo-config-values' 2026-06-15 07:42:00 -07:00
upload-pack.h
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url.c url: return URL_SCHEME_UNKNOWN instead of dying 2026-05-06 09:48:27 +09:00
url.h url: return URL_SCHEME_UNKNOWN instead of dying 2026-05-06 09:48:27 +09:00
urlmatch.c urlmatch: add url_normalize_pattern() helper 2026-05-28 05:20:15 +09:00
urlmatch.h urlmatch: add url_normalize_pattern() helper 2026-05-28 05:20:15 +09:00
usage.c parse-options: exit 0 on -h 2026-07-07 17:48:57 -07:00
userdiff.c userdiff: extend Scheme support to cover other Lisp dialects 2026-04-15 08:43:33 -07:00
userdiff.h
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utf8.c
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utf8.h
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varint.c
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varint.h
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version-def.h.in
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version.c
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version.h
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versioncmp.c
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versioncmp.h
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walker.c prio-queue: rename .nr to .nr_ and add accessor helpers 2026-06-09 11:11:46 -07:00
walker.h
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wildmatch.c
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wildmatch.h
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worktree.c environment: stop using `the_repository` in `is_bare_repository()` 2026-06-11 05:05:54 -07:00
worktree.h worktree: rename get_worktree_from_repository() 2026-05-02 07:02:45 +09:00
wrapper.c Revert "wrapper: introduce writev(3p) wrappers" 2026-04-09 14:48:09 -07:00
wrapper.h Revert "wrapper: introduce writev(3p) wrappers" 2026-04-09 14:48:09 -07:00
write-or-die.c Revert "wrapper: introduce writev(3p) wrappers" 2026-04-09 14:48:09 -07:00
write-or-die.h Revert "wrapper: introduce writev(3p) wrappers" 2026-04-09 14:48:09 -07:00
ws.c
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ws.h
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wt-status.c Merge branch 'pw/status-rebase-todo' 2026-07-06 15:50:23 -07:00
wt-status.h
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xdiff-interface.c odb: use size_t for object_info.sizep and the size APIs 2026-06-15 07:45:41 -07:00
xdiff-interface.h checkout -m: autostash when switching branches 2026-04-29 21:46:03 +09:00

README.md

GitHub build status GitLab build status

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.adoc to get started, then see Documentation/giteveryday.adoc for a useful minimum set of commands, and Documentation/git-<commandname>.adoc for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.adoc (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission and Documentation/CodingGuidelines).

Those wishing to help with error message, usage and informational message string translations (localization l10) should see po/README.md (a po file is a Portable Object file that holds the translations).

To subscribe to the list, send an email to git+subscribe@vger.kernel.org (see https://subspace.kernel.org/subscribing.html for details). The mailing list archives are available at https://lore.kernel.org/git/, https://marc.info/?l=git and other archival sites.

Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

  • random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
  • stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
  • "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
  • "goddamn idiotic truckload of sh*t": when it breaks