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Derrick Stolee 0e87b85683 sha1_name: minimize OID comparisons during disambiguation 
Minimize OID comparisons during disambiguation of packfile OIDs.

Teach git to use binary search with the full OID to find the object's
position (or insertion position, if not present) in the pack-index.
The object before and immediately after (or the one at the insertion
position) give the maximum common prefix.  No subsequent linear search
is required.

Take care of which two to inspect, in case the object id exists in the
packfile.

If the input to find_unique_abbrev_r() is a partial prefix, then the
OID used for the binary search is padded with zeroes so the object will
not exist in the repo (with high probability) and the same logic
applies.

This commit completes a series of three changes to OID abbreviation
code, and the overall change can be seen using standard commands for
large repos. Below we report performance statistics for perf test 4211.6
from p4211-line-log.sh using three copies of the Linux repo:

| Packs | Loose  | HEAD~3   | HEAD     | Rel%  |
|-------|--------|----------|----------|-------|
|  1    |      0 |  41.27 s |  38.93 s | -4.8% |
| 24    |      0 |  98.04 s |  91.35 s | -5.7% |
| 23    | 323952 | 117.78 s | 112.18 s | -4.8% |

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-13 09:26:12 +09:00
.github Configure Git contribution guidelines for github.com 2017-06-13 08:41:47 -07:00
block-sha1
builtin Merge branch 'ma/up-to-date' 2017-09-10 17:08:22 +09:00
ci Merge branch 'ls/travis-doc-asciidoctor' into maint 2017-06-05 09:03:10 +09:00
compat Merge branch 'rs/win32-syslog-leakfix' into maint 2017-09-10 17:02:54 +09:00
contrib Merge branch 'ma/up-to-date' 2017-09-10 17:08:22 +09:00
Documentation Sync with maint 2017-09-10 17:15:43 +09:00
ewah use DIV_ROUND_UP 2017-07-10 14:24:36 -07:00
git-gui Merge branch 'ma/up-to-date' 2017-09-10 17:08:22 +09:00
gitk-git
gitweb Merge branch 'js/gitweb-raw-blob-link-in-history' 2017-08-26 22:55:07 -07:00
mergetools mergetools/meld: improve compatibiilty with Meld on macOS X 2017-06-18 22:11:29 -07:00
outgoing pack: move pack name-related functions 2017-08-23 15:12:06 -07:00
perl Merge branch 'jc/perl-git-comment-typofix' into maint 2017-09-10 17:02:57 +09:00
po l10n: zh_CN: review for git v2.14.0 l10n 2017-08-02 08:02:37 +08:00
ppc
refs Merge branch 'mh/ref-lock-entry' 2017-08-26 22:55:09 -07:00
sha1collisiondetection@19d97bf5af sha1dc: optionally use sha1collisiondetection as a submodule 2017-07-03 10:09:34 -07:00
sha1dc Merge branch 'ab/sha1dc-maint' 2017-07-06 18:14:44 -07:00
t p4211-line-log.sh: add log --online --raw --parents perf test 2017-10-13 09:25:45 +09:00
templates Merge branch 'ma/up-to-date' 2017-09-10 17:08:22 +09:00
vcs-svn Merge branch 'jn/vcs-svn-cleanup' into maint 2017-09-10 17:03:09 +09:00
xdiff
.gitattributes Fix build with core.autocrlf=true 2017-05-10 13:32:50 +09:00
.gitignore
.gitmodules sha1dc: optionally use sha1collisiondetection as a submodule 2017-07-03 10:09:34 -07:00
.mailmap
.travis.yml Merge branch 'ls/travis-doc-asciidoctor' into maint 2017-06-05 09:03:10 +09:00
.tsan-suppressions ThreadSanitizer: add suppressions 2017-08-23 10:38:56 -07:00
abspath.c Spelling fixes 2017-06-27 10:35:49 -07:00
aclocal.m4
advice.c Merge branch 'jk/warn-add-gitlink' 2017-06-24 14:28:41 -07:00
advice.h add: warn when adding an embedded repository 2017-06-15 09:10:44 -07:00
alias.c Merge branch 'js/alias-case-sensitivity' 2017-07-20 16:29:59 -07:00
alloc.c
apply.c Merge branch 'rs/apply-epoch' 2017-09-10 17:08:25 +09:00
apply.h apply: remove prefix_length member from apply_state 2017-08-09 10:21:45 -07:00
archive-tar.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
archive-zip.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
archive.c Merge branch 'rs/archive-excluded-directory' 2017-09-06 13:11:25 +09:00
archive.h timestamp_t: a new data type for timestamps 2017-04-27 13:07:39 +09:00
argv-array.c
argv-array.h
attr.c attr.c: drop hashmap_cmp_fn cast 2017-07-05 13:53:12 -07:00
attr.h
base85.c
bisect.c bisect: convert bisect_checkout to struct object_id 2017-07-17 13:54:38 -07:00
bisect.h
blame.c Merge branch 'js/blame-lib' 2017-07-31 13:05:15 -07:00
blame.h blame: move entry prepend to libgit 2017-05-25 13:08:23 +09:00
blob.c Convert lookup_blob to struct object_id 2017-05-08 15:12:57 +09:00
blob.h Convert lookup_blob to struct object_id 2017-05-08 15:12:57 +09:00
branch.c Merge branch 'nd/worktree-kill-parse-ref' 2017-09-10 17:08:24 +09:00
branch.h
builtin.h git.c: provide setup_auto_pager() 2017-08-03 11:08:10 -07:00
bulk-checkin.c pack: move {,re}prepare_packed_git and approximate_object_count 2017-08-23 15:12:07 -07:00
bulk-checkin.h
bundle.c Merge branch 'bc/object-id' 2017-05-29 12:34:43 +09:00
bundle.h bundle: convert to struct object_id 2017-05-02 10:46:41 +09:00
cache-tree.c use MOVE_ARRAY 2017-07-17 14:54:56 -07:00
cache-tree.h Convert struct cache_tree to use struct object_id 2017-05-02 10:46:41 +09:00
cache.h Merge branch 'sb/sha1-file-cleanup' into maint 2017-09-10 17:03:04 +09:00
check-builtins.sh
check-racy.c
check_bindir
color.c Merge branch 'ma/ts-cleanups' 2017-09-10 17:08:22 +09:00
color.h diff.c: add dimming to moved line detection 2017-06-30 13:59:42 -07:00
column.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
column.h
combine-diff.c Merge branch 'bw/ls-files-sans-the-index' 2017-06-24 14:28:40 -07:00
command-list.txt
commit-slab.h *.[ch] refactoring: make use of the FREE_AND_NULL() macro 2017-06-16 12:44:09 -07:00
commit.c commit: rewrite read_graft_line 2017-08-18 12:41:06 -07:00
commit.h Merge branch 'po/read-graft-line' 2017-09-06 13:11:25 +09:00
common-main.c
config.c Merge branch 'jc/cutoff-config' 2017-08-26 22:55:08 -07:00
config.h Merge branch 'jc/cutoff-config' 2017-08-26 22:55:08 -07:00
config.mak.in
config.mak.uname config.mak.uname: set FREAD_READS_DIRECTORIES for cygwin 2017-07-21 11:58:06 -07:00
configure.ac Merge branch 'nd/fopen-errors' 2017-06-22 14:15:20 -07:00
connect.c Git 2.13.5 2017-08-04 12:40:37 -07:00
connect.h
connected.c pack: move {,re}prepare_packed_git and approximate_object_count 2017-08-23 15:12:07 -07:00
connected.h
convert.c Merge branch 'ma/ts-cleanups' 2017-09-10 17:08:22 +09:00
convert.h Merge branch 'tb/apply-with-crlf' into maint 2017-09-10 17:02:55 +09:00
copy.c
COPYING
credential-cache--daemon.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
credential-cache.c Merge branch 'dl/credential-cache-socket-in-xdg-cache' into maint 2017-08-23 14:33:45 -07:00
credential-store.c path.c: and an option to call real_path() in expand_user_path() 2017-04-14 23:51:38 -07:00
credential.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
credential.h
csum-file.c
csum-file.h
ctype.c
daemon.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
date.c Merge branch 'ab/strbuf-addftime-tzname-boolify' 2017-07-06 18:14:47 -07:00
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
diff-no-index.c diff: convert fill_filespec to struct object_id 2017-06-02 09:36:07 +09:00
diff.c Merge branch 'jt/packmigrate' 2017-08-26 22:55:09 -07:00
diff.h diff: define block by number of alphanumeric chars 2017-08-16 11:44:00 -07:00
diffcore-break.c
diffcore-delta.c
diffcore-order.c wildmatch: remove unused wildopts parameter 2017-06-23 18:27:07 -07:00
diffcore-pickaxe.c Merge branch 'js/regexec-buf' into maint 2017-03-28 13:52:24 -07:00
diffcore-rename.c progress: simplify "delayed" progress API 2017-08-19 14:01:34 -07:00
diffcore.h diff: convert fill_filespec to struct object_id 2017-06-02 09:36:07 +09:00
dir-iterator.c
dir-iterator.h
dir.c Merge branch 'rs/stat-data-unaligned-reads-fix' into maint 2017-08-23 14:33:48 -07:00
dir.h Merge branch 'pc/dir-count-slashes' 2017-06-22 14:15:21 -07:00
editor.c
entry.c Merge branch 'ls/convert-filter-progress' 2017-09-10 17:08:22 +09:00
environment.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
exec_cmd.c
exec_cmd.h
fast-import.c pack: move pack name-related functions 2017-08-23 15:12:06 -07:00
fetch-pack.c pack: move {,re}prepare_packed_git and approximate_object_count 2017-08-23 15:12:07 -07:00
fetch-pack.h Rename sha1_array to oid_array 2017-03-31 08:33:56 -07:00
fmt-merge-msg.h
fsck.c commit: convert lookup_commit_graft to struct object_id 2017-07-13 12:02:40 -07:00
fsck.h Rename sha1_array to oid_array 2017-03-31 08:33:56 -07:00
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl Merge branch 'pw/unquote-path-in-git-pm' into maint 2017-07-31 13:51:05 -07:00
git-archimport.perl
git-bisect.sh
git-compat-util.h pack: move release_pack_memory() 2017-08-23 15:12:06 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh
git-filter-branch.sh filter-branch: add [--] to usage 2017-06-12 09:49:52 -07:00
git-instaweb.sh
git-merge-octopus.sh Merge branch 'ma/up-to-date' 2017-09-10 17:08:22 +09:00
git-merge-one-file.sh scripts: use "git foo" not "git-foo" 2017-08-07 12:04:45 -07:00
git-merge-resolve.sh scripts: use "git foo" not "git-foo" 2017-08-07 12:04:45 -07:00
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh Merge branch 'kw/rebase-progress' 2017-08-23 14:13:07 -07:00
git-rebase--interactive.sh rebase -i: honor --rerere-autoupdate 2017-08-02 15:16:09 -07:00
git-rebase--merge.sh
git-rebase.sh Merge branch 'kw/rebase-progress' 2017-08-23 14:13:07 -07:00
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl send-email: don't use Mail::Address, even if available 2017-08-24 14:40:17 -07:00
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh Merge branch 'mf/no-dashed-subcommands' into maint 2017-09-10 17:02:56 +09:00
git-submodule.sh Merge branch 'sb/submodule-parallel-update' into maint 2017-09-10 17:03:06 +09:00
git-svn.perl
GIT-VERSION-GEN Prepare for 2.14.2 2017-08-23 14:36:03 -07:00
git-web--browse.sh
git.c Merge branch 'bw/grep-recurse-submodules' 2017-08-22 10:29:01 -07:00
git.rc
gpg-interface.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
gpg-interface.h
graph.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
graph.h
grep.c Merge branch 'as/grep-quiet-no-match-exit-code-fix' into maint 2017-09-10 17:02:55 +09:00
grep.h grep: recurse in-process using 'struct repository' 2017-08-02 14:26:46 -07:00
hash.h sha1dc: optionally use sha1collisiondetection as a submodule 2017-07-03 10:09:34 -07:00
hashmap.c hashmap.h: compare function has access to a data field 2017-06-30 12:49:28 -07:00
hashmap.h hashmap: migrate documentation from Documentation/technical into header 2017-06-30 13:11:59 -07:00
help.c Merge branch 'mb/reword-autocomplete-message' into maint 2017-07-10 13:59:04 -07:00
help.h
hex.c
http-backend.c pack: move {,re}prepare_packed_git and approximate_object_count 2017-08-23 15:12:07 -07:00
http-fetch.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
http-push.c pack: move find_sha1_pack() 2017-08-23 15:12:07 -07:00
http-walker.c pack: move find_sha1_pack() 2017-08-23 15:12:07 -07:00
http.c Merge branch 'jt/packmigrate' 2017-08-26 22:55:09 -07:00
http.h http.postbuffer: allow full range of ssize_t values 2017-04-13 18:24:32 -07:00
ident.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
imap-send.c Merge branch 'rs/use-div-round-up' 2017-07-12 15:18:23 -07:00
INSTALL
iterator.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
line-log.h
line-range.c
line-range.h
list-objects.c Convert lookup_tree to struct object_id 2017-05-08 15:12:57 +09:00
list-objects.h
list.h
ll-merge.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
ll-merge.h
lockfile.c
lockfile.h lockfile: add a new method, is_lock_file_locked() 2017-05-23 14:29:54 +09:00
log-tree.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
log-tree.h
mailinfo.c Spelling fixes 2017-06-27 10:35:49 -07:00
mailinfo.h
mailmap.c Convert remaining callers of get_sha1 to get_oid. 2017-07-17 13:54:51 -07:00
mailmap.h
Makefile Merge branch 'jn/vcs-svn-cleanup' into maint 2017-09-10 17:03:09 +09:00
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
merge-recursive.h
merge.c tree: convert parse_tree_indirect to struct object_id 2017-05-08 15:12:58 +09:00
mergesort.c
mergesort.h
mru.c
mru.h
name-hash.c name-hash.c: drop hashmap_cmp_fn cast 2017-07-05 13:53:12 -07:00
notes-cache.c notes: convert some accessor functions to struct object_id 2017-06-02 09:36:06 +09:00
notes-cache.h notes-cache: convert to struct object_id 2017-05-08 15:12:57 +09:00
notes-merge.c Merge branch 'ma/up-to-date' 2017-09-10 17:08:22 +09:00
notes-merge.h notes-merge: convert notes_merge* to struct object_id 2017-06-05 11:23:58 +09:00
notes-utils.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
notes-utils.h builtin/notes: convert to struct object_id 2017-06-02 09:36:06 +09:00
notes.c tree-walk: convert fill_tree_descriptor() to object_id 2017-08-14 12:38:54 -07:00
notes.h notes: convert some accessor functions to struct object_id 2017-06-02 09:36:06 +09:00
object.c object: remove "used" field from struct object 2017-07-20 14:54:08 -07:00
object.h object: remove "used" field from struct object 2017-07-20 14:54:08 -07:00
oidset.c hashmap.h: compare function has access to a data field 2017-06-30 12:49:28 -07:00
oidset.h
pack-bitmap-write.c pack: convert struct pack_idx_entry to struct object_id 2017-05-08 15:12:57 +09:00
pack-bitmap.c pack: move open_pack_index(), parse_pack_index() 2017-08-23 15:12:06 -07:00
pack-bitmap.h
pack-check.c pack: move open_pack_index(), parse_pack_index() 2017-08-23 15:12:06 -07:00
pack-objects.c pack: convert struct pack_idx_entry to struct object_id 2017-05-08 15:12:57 +09:00
pack-objects.h
pack-revindex.c
pack-revindex.h
pack-write.c pack: convert struct pack_idx_entry to struct object_id 2017-05-08 15:12:57 +09:00
pack.h Convert the verify_pack callback to struct object_id 2017-05-08 15:12:57 +09:00
packfile.c pack: move for_each_packed_object() 2017-08-23 15:12:07 -07:00
packfile.h pack: move for_each_packed_object() 2017-08-23 15:12:07 -07:00
pager.c Merge branch 'ma/parse-maybe-bool' 2017-08-22 10:29:03 -07:00
parse-options-cb.c Merge branch 'bc/object-id' 2017-05-29 12:34:43 +09:00
parse-options.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
parse-options.h
patch-delta.c
patch-ids.c patch-ids.c: drop hashmap_cmp_fn cast 2017-07-05 13:53:12 -07:00
patch-ids.h patch-ids: convert to struct object_id 2017-06-02 09:36:07 +09:00
path.c pack: move {,re}prepare_packed_git and approximate_object_count 2017-08-23 15:12:07 -07:00
path.h path: add repo_worktree_path and strbuf_repo_worktree_path 2017-06-23 18:24:34 -07:00
pathspec.c Spelling fixes 2017-06-27 10:35:49 -07:00
pathspec.h pathspec: convert find_pathspecs_matching_against_index to take an index 2017-05-12 14:23:46 +09:00
pkt-line.c sub-process: refactor handshake to common function 2017-07-26 13:00:40 -07:00
pkt-line.h sub-process: refactor handshake to common function 2017-07-26 13:00:40 -07:00
preload-index.c
pretty.c Merge branch 'jk/trailers-parse' 2017-08-26 22:55:04 -07:00
prio-queue.c *.[ch] refactoring: make use of the FREE_AND_NULL() macro 2017-06-16 12:44:09 -07:00
prio-queue.h
progress.c progress: simplify "delayed" progress API 2017-08-19 14:01:34 -07:00
progress.h progress: simplify "delayed" progress API 2017-08-19 14:01:34 -07:00
prompt.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
prompt.h
quote.c
quote.h
reachable.c pack: move for_each_packed_object() 2017-08-23 15:12:07 -07:00
reachable.h timestamp_t: a new data type for timestamps 2017-04-27 13:07:39 +09:00
read-cache.c Merge branch 'kw/write-index-reduce-alloc' 2017-08-26 22:55:08 -07:00
README.md
ref-filter.c ref-filter: consult want_color() before emitting colors 2017-07-13 12:42:51 -07:00
ref-filter.h ref-filter: consult want_color() before emitting colors 2017-07-13 12:42:51 -07:00
reflog-walk.c use MOVE_ARRAY 2017-07-17 14:54:56 -07:00
reflog-walk.h reflog-walk: apply --since/--until to reflog dates 2017-07-09 10:00:48 -07:00
refs.c Merge branch 'mh/ref-lock-entry' 2017-08-26 22:55:09 -07:00
refs.h Spelling fixes 2017-06-27 10:35:49 -07:00
RelNotes Prepare for 2.14.2 2017-08-23 14:36:03 -07:00
remote-curl.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
remote-testsvn.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
remote.c Merge branch 'ma/up-to-date' 2017-09-10 17:08:22 +09:00
remote.h remote: convert struct push_cas to struct object_id 2017-07-17 13:54:38 -07:00
replace_object.c
repository.c Merge branch 'bw/grep-recurse-submodules' 2017-08-22 10:29:01 -07:00
repository.h repo_read_index: don't discard the index 2017-07-18 13:32:25 -07:00
rerere.c rerere: allow approxidate in gc.rerereResolved/gc.rerereUnresolved 2017-08-22 14:51:02 -07:00
rerere.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'jk/rev-list-empty-input' into maint 2017-09-10 17:02:48 +09:00
revision.h revision: add rev_input_given flag 2017-08-02 15:45:20 -07:00
run-command.c Merge branch 'js/run-process-parallel-api-fix' into maint 2017-08-23 14:33:49 -07:00
run-command.h run-command: expose is_executable function 2017-04-25 18:45:29 -07:00
send-pack.c Spelling fixes 2017-06-27 10:35:49 -07:00
send-pack.h Rename sha1_array to oid_array 2017-03-31 08:33:56 -07:00
sequencer.c Merge branch 'pw/sequence-rerere-autoupdate' 2017-08-22 10:29:00 -07:00
sequencer.h
server-info.c pack: move {,re}prepare_packed_git and approximate_object_count 2017-08-23 15:12:07 -07:00
setup.c grep: recurse in-process using 'struct repository' 2017-08-02 14:26:46 -07:00
sh-i18n--envsubst.c
sha1-array.c coccinelle: make use of the "type" FREE_AND_NULL() rule 2017-06-16 12:44:03 -07:00
sha1-array.h Rename sha1_array to oid_array 2017-03-31 08:33:56 -07:00
sha1-lookup.c sha1_file: drop experimental GIT_USE_LOOKUP search 2017-08-09 11:03:35 -07:00
sha1-lookup.h sha1-lookup: remove sha1_entry_pos() from header file 2017-08-25 09:54:26 -07:00
sha1_file.c Merge branch 'sb/sha1-file-cleanup' into maint 2017-09-10 17:03:04 +09:00
sha1_name.c sha1_name: minimize OID comparisons during disambiguation 2017-10-13 09:26:12 +09:00
sha1dc_git.c sha1dc: update from upstream 2017-05-22 10:20:46 +09:00
sha1dc_git.h sha1dc: update from upstream 2017-05-22 10:20:46 +09:00
shallow.c commit: convert lookup_commit_graft to struct object_id 2017-07-13 12:02:40 -07:00
shell.c Merge branch 'maint-2.8' into maint-2.9 2017-05-05 13:13:48 +09:00
shortlog.h
show-index.c
sideband.c
sideband.h
sigchain.c
sigchain.h
split-index.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
split-index.h Revert "split-index: add and use unshare_split_index()" 2017-06-24 12:02:39 -07:00
strbuf.c Merge branch 'rs/strbuf-getwholeline-fix' 2017-08-22 10:29:15 -07:00
strbuf.h Merge branch 'ma/ts-cleanups' 2017-09-10 17:08:22 +09:00
streaming.c pack: move use_pack() 2017-08-23 15:12:06 -07:00
streaming.h
string-list.c use MOVE_ARRAY 2017-07-17 14:54:56 -07:00
string-list.h string-list: add string_list_remove function 2017-04-20 17:55:32 -07:00
sub-process.c Merge branch 'cc/subprocess-handshake-missing-capabilities' 2017-08-24 10:20:02 -07:00
sub-process.h Merge branch 'jt/subprocess-handshake' 2017-08-11 13:27:05 -07:00
submodule-config.c Merge branch 'bw/submodule-config-cleanup' 2017-08-26 22:55:08 -07:00
submodule-config.h Merge branch 'bw/grep-recurse-submodules' 2017-08-22 10:29:01 -07:00
submodule.c Merge branch 'bw/push-options-recursively-to-submodules' into maint 2017-09-10 17:02:49 +09:00
submodule.h Merge branch 'bw/submodule-config-cleanup' 2017-08-26 22:55:08 -07:00
symlinks.c
tag.c tag: convert gpg_verify_tag to use struct object_id 2017-07-13 12:02:48 -07:00
tag.h tag: convert gpg_verify_tag to use struct object_id 2017-07-13 12:02:48 -07:00
tar.h
tempfile.c
tempfile.h
thread-utils.c
thread-utils.h
tmp-objdir.c
tmp-objdir.h
trace.c
trace.h
trailer.c Merge branch 'jk/trailers-parse' 2017-08-26 22:55:04 -07:00
trailer.h Merge branch 'jk/trailers-parse' 2017-08-26 22:55:04 -07:00
transport-helper.c Merge branch 'ma/ts-cleanups' 2017-09-10 17:08:22 +09:00
transport.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
transport.h
tree-diff.c tree-walk: convert fill_tree_descriptor() to object_id 2017-08-14 12:38:54 -07:00
tree-walk.c tree-walk: convert fill_tree_descriptor() to object_id 2017-08-14 12:38:54 -07:00
tree-walk.h tree-walk: convert fill_tree_descriptor() to object_id 2017-08-14 12:38:54 -07:00
tree.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
tree.h tree: convert read_tree to take an index parameter 2017-06-13 11:40:51 -07:00
unicode_width.h unicode: update the width tables to Unicode 10 2017-07-07 10:33:30 -07:00
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c Merge branch 'ls/convert-filter-progress' 2017-09-10 17:08:22 +09:00
unpack-trees.h
upload-pack.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
url.c
url.h
urlmatch.c urlmatch: use hex2chr() in append_normalized_escapes() 2017-07-09 09:43:01 -07:00
urlmatch.h
usage.c die(): stop hiding errors due to overzealous recursion guard 2017-06-21 14:09:13 -07:00
userdiff.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
userdiff.h
utf8.c
utf8.h
varint.c
varint.h
version.c
version.h
versioncmp.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
walker.c object: convert parse_object* to take struct object_id 2017-05-08 15:12:58 +09:00
walker.h
wildmatch.c wildmatch: remove unused wildopts parameter 2017-06-23 18:27:07 -07:00
wildmatch.h wildmatch: remove unused wildopts parameter 2017-06-23 18:27:07 -07:00
worktree.c Merge branch 'nd/worktree-kill-parse-ref' 2017-09-10 17:08:24 +09:00
worktree.h worktree.c: kill parse_ref() in favor of refs_resolve_ref_unsafe() 2017-04-24 21:28:55 -07:00
wrap-for-bin.sh
wrapper.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
write_or_die.c
ws.c
wt-status.c Merge branch 'rs/wt-status-cleanup' 2017-07-12 15:18:23 -07:00
wt-status.h Merge branch 'ks/status-initial-commit' 2017-06-30 13:45:22 -07:00
xdiff-interface.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
xdiff-interface.h
zlib.c

README.md

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.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-.txt 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.txt (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). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.

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