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Jacob Keller 99b43a61f2 allow do_submodule_path to work even if submodule isn't checked out
Currently, do_submodule_path will attempt locating the .git directory by
using read_gitfile on <path>/.git. If this fails it just assumes the
<path>/.git is actually a git directory.

This is good because it allows for handling submodules which were cloned
in a regular manner first before being added to the superproject.

Unfortunately this fails if the <path> is not actually checked out any
longer, such as by removing the directory.

Fix this by checking if the directory we found is actually a gitdir. In
the case it is not, attempt to lookup the submodule configuration and
find the name of where it is stored in the .git/modules/ directory of
the superproject.

If we can't locate the submodule configuration, this might occur because
for example a submodule gitlink was added but the corresponding
.gitmodules file was not properly updated.  A die() here would not be
pleasant to the users of submodule diff formats, so instead, modify
do_submodule_path() to return an error code:

 - git_pathdup_submodule() returns NULL when we fail to find a path.
 - strbuf_git_path_submodule() propagates the error code to the caller.

Modify the callers of these functions to check the error code and fail
properly. This ensures we don't attempt to use a bad path that doesn't
match the corresponding submodule.

Because this change fixes add_submodule_odb() to work even if the
submodule is not checked out, update the wording of the submodule log
diff format to correctly display that the submodule is "not initialized"
instead of "not checked out"

Add tests to ensure this change works as expected.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-31 18:07:10 -07:00
Documentation graph: add support for --line-prefix on all graph-aware output 2016-08-31 18:07:09 -07:00
block-sha1
builtin graph: add support for --line-prefix on all graph-aware output 2016-08-31 18:07:09 -07:00
ci
compat Merge branch 'js/nedmalloc-gcc6-warnings' into maint 2016-08-10 11:55:31 -07:00
contrib Merge branch 'jk/completion-diff-submodule' 2016-08-10 12:33:19 -07:00
ewah
git-gui
gitk-git
gitweb gitweb: escape link body in format_ref_marker 2016-08-01 12:55:40 -07:00
mergetools
perl
po
ppc
refs allow do_submodule_path to work even if submodule isn't checked out 2016-08-31 18:07:10 -07:00
t allow do_submodule_path to work even if submodule isn't checked out 2016-08-31 18:07:10 -07:00
templates
vcs-svn
xdiff Merge branch 'js/ignore-space-at-eol' into maint 2016-08-08 14:21:35 -07:00
.gitattributes
.gitignore
.mailmap .mailmap: use Christian Couder's Tuxfamily address 2016-08-08 15:17:24 -07:00
.travis.yml Merge branch 'ls/travis-enable-httpd-tests' into maint 2016-08-10 11:55:23 -07:00
COPYING
GIT-VERSION-GEN
INSTALL
LGPL-2.1
Makefile Merge branch 'ew/build-time-pager-tweaks' 2016-08-08 14:48:44 -07:00
README.md
RelNotes Some fixes for 2.9.3 2016-07-28 11:28:32 -07:00
abspath.c
aclocal.m4
advice.c
advice.h
alias.c
alloc.c
archive-tar.c
archive-zip.c
archive.c
archive.h
argv-array.c
argv-array.h
attr.c
attr.h
base85.c
bisect.c Merge branch 'jk/printf-format' 2016-07-19 13:22:22 -07:00
bisect.h
blob.c
blob.h
branch.c
branch.h
builtin.h
bulk-checkin.c
bulk-checkin.h
bundle.c
bundle.h
cache-tree.c
cache-tree.h
cache.h allow do_submodule_path to work even if submodule isn't checked out 2016-08-31 18:07:10 -07:00
check-builtins.sh
check-racy.c
check_bindir
color.c
color.h Merge branch 'js/color-on-windows-comment' into maint 2016-07-28 11:25:55 -07:00
column.c
column.h
combine-diff.c
command-list.txt
commit-slab.h Merge branch 'js/commit-slab-decl-fix' 2016-08-10 12:33:20 -07:00
commit.c Merge branch 'js/sign-empty-commit-fix' into maint 2016-07-28 11:25:53 -07:00
commit.h Merge branch 'js/find-commit-subject-ignore-leading-blanks' into maint 2016-07-28 11:25:50 -07:00
common-main.c
config.c i18n: config: unfold error messages marked for translation 2016-07-28 09:11:09 -07:00
config.mak.in
config.mak.uname Merge branch 'ew/build-time-pager-tweaks' 2016-08-08 14:48:44 -07:00
configure.ac Merge branch 'ew/autoconf-pthread' into maint 2016-08-10 11:55:21 -07:00
connect.c
connect.h
connected.c check_connected: add progress flag 2016-07-20 12:11:09 -07:00
connected.h check_connected: add progress flag 2016-07-20 12:11:09 -07:00
convert.c
convert.h
copy.c
credential-cache--daemon.c
credential-cache.c
credential-store.c
credential.c
credential.h
csum-file.c
csum-file.h
ctype.c
daemon.c Merge branch 'ew/daemon-socket-keepalive' 2016-07-28 10:34:43 -07:00
date.c date: add "unix" format 2016-07-27 14:15:51 -07:00
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c
diff-no-index.c
diff.c diff: prepare for additional submodule formats 2016-08-31 18:07:09 -07:00
diff.h diff: prepare for additional submodule formats 2016-08-31 18:07:09 -07:00
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c pass constants as first argument to st_mult() 2016-08-01 14:01:03 -07:00
diffcore.h
dir-iterator.c
dir-iterator.h
dir.c Merge branch 'rs/use-strbuf-addbuf' into maint 2016-08-08 14:21:42 -07:00
dir.h Merge branch 'mh/split-under-lock' 2016-07-25 14:13:32 -07:00
editor.c
entry.c
environment.c
exec_cmd.c
exec_cmd.h
fast-import.c Merge branch 'jk/common-main' 2016-07-19 13:22:19 -07:00
fetch-pack.c fetch-pack: grow stateless RPC windows exponentially 2016-07-19 13:27:22 -07:00
fetch-pack.h
fmt-merge-msg.h
fsck.c
fsck.h
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl
git-archimport.perl
git-bisect.sh
git-compat-util.h Merge branch 'jk/common-main' 2016-07-19 13:22:19 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh
git-difftool.perl difftool: use Git::* functions instead of passing around state 2016-07-28 14:01:55 -07:00
git-filter-branch.sh
git-instaweb.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py Merge branch 'ls/p4-tmp-refs' 2016-07-19 13:22:24 -07:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh
git-rebase--interactive.sh Merge branch 'js/rebase-i-progress-tidy' 2016-08-08 14:48:38 -07:00
git-rebase--merge.sh
git-rebase.sh
git-relink.perl
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl
git-sh-i18n.sh
git-sh-setup.sh Merge branch 'ew/build-time-pager-tweaks' 2016-08-08 14:48:44 -07:00
git-stash.sh
git-submodule.sh Merge branch 'sb/submodule-update-dot-branch' 2016-08-10 12:33:20 -07:00
git-svn.perl git-svn: allow --version to work anywhere 2016-07-22 20:38:11 +00:00
git-web--browse.sh
git.c
git.rc
gpg-interface.c
gpg-interface.h
graph.c graph: add support for --line-prefix on all graph-aware output 2016-08-31 18:07:09 -07:00
graph.h graph: add support for --line-prefix on all graph-aware output 2016-08-31 18:07:09 -07:00
grep.c Merge branch 'js/am-3-merge-recursive-direct' 2016-08-10 12:33:20 -07:00
grep.h Merge branch 'jc/grep-commandline-vs-configuration' into maint 2016-08-10 11:55:29 -07:00
hashmap.c
hashmap.h
help.c
help.h
hex.c
http-backend.c
http-fetch.c
http-push.c Merge branch 'rs/use-strbuf-addstr' 2016-08-08 14:48:41 -07:00
http-walker.c
http.c Merge branch 'rs/use-strbuf-addstr' 2016-08-08 14:48:41 -07:00
http.h
ident.c Merge branch 'jk/reset-ident-time-per-commit' 2016-08-10 12:33:17 -07:00
imap-send.c die("bug"): report bugs consistently 2016-07-26 11:13:44 -07:00
iterator.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
line-log.c
line-log.h
line-range.c
line-range.h
list-objects.c
list-objects.h
list.h
ll-merge.c
ll-merge.h
lockfile.c
lockfile.h
log-tree.c graph: add support for --line-prefix on all graph-aware output 2016-08-31 18:07:09 -07:00
log-tree.h
mailinfo.c
mailinfo.h
mailmap.c
mailmap.h
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c merge-recursive: flush output buffer even when erroring out 2016-08-01 11:45:30 -07:00
merge-recursive.h merge-recursive: offer an option to retain the output in 'obuf' 2016-08-01 11:45:30 -07:00
merge.c
mergesort.c
mergesort.h
mru.c add generic most-recently-used list 2016-07-29 11:05:07 -07:00
mru.h add generic most-recently-used list 2016-07-29 11:05:07 -07:00
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c Merge branch 'rs/notes-merge-no-toctou' 2016-07-28 10:34:41 -07:00
notes-merge.h
notes-utils.c
notes-utils.h
notes.c
notes.h
object.c
object.h
pack-bitmap-write.c
pack-bitmap.c
pack-bitmap.h
pack-check.c
pack-objects.c
pack-objects.h
pack-revindex.c
pack-revindex.h
pack-write.c sha1_file: drop free_pack_by_name 2016-07-29 11:05:06 -07:00
pack.h
pager.c pager: move pager-specific setup into the build 2016-08-04 13:51:02 -07:00
parse-options-cb.c Merge branch 'jk/parse-options-concat' 2016-08-03 15:10:25 -07:00
parse-options.c
parse-options.h
patch-delta.c
patch-ids.c
patch-ids.h
path.c allow do_submodule_path to work even if submodule isn't checked out 2016-08-31 18:07:10 -07:00
pathspec.c
pathspec.h
pkt-line.c
pkt-line.h
preload-index.c
pretty.c Merge branch 'js/find-commit-subject-ignore-leading-blanks' into maint 2016-07-28 11:25:50 -07:00
prio-queue.c
prio-queue.h
progress.c
progress.h
prompt.c
prompt.h
quote.c Merge branch 'nd/icase' into maint 2016-07-28 11:26:03 -07:00
quote.h Merge branch 'nd/icase' into maint 2016-07-28 11:26:03 -07:00
reachable.c
reachable.h
read-cache.c Merge branch 'jc/renormalize-merge-kill-safer-crlf' 2016-07-25 14:13:39 -07:00
ref-filter.c
ref-filter.h
reflog-walk.c
reflog-walk.h
refs.c pass constants as first argument to st_mult() 2016-08-01 14:01:03 -07:00
refs.h Merge branch 'mh/ref-iterators' 2016-07-25 14:13:33 -07:00
remote-curl.c
remote-testsvn.c
remote.c Merge branch 'jk/push-force-with-lease-creation' 2016-08-10 12:33:18 -07:00
remote.h Merge branch 'jk/push-force-with-lease-creation' 2016-08-10 12:33:18 -07:00
replace_object.c
rerere.c
rerere.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'jc/grep-commandline-vs-configuration' into maint 2016-08-10 11:55:29 -07:00
revision.h
run-command.c
run-command.h
send-pack.c Merge branch 'rs/use-strbuf-addstr' into maint 2016-08-10 11:55:34 -07:00
send-pack.h
sequencer.c Merge branch 'js/am-3-merge-recursive-direct' 2016-08-10 12:33:20 -07:00
sequencer.h
server-info.c
setup.c
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
sha1_file.c cache: add empty_tree_oid object and helper function 2016-08-31 18:07:08 -07:00
sha1_name.c
shallow.c pass constants as first argument to st_mult() 2016-08-01 14:01:03 -07:00
shell.c
shortlog.h
show-index.c
sideband.c Merge branch 'lf/recv-sideband-cleanup' into maint 2016-08-08 14:21:41 -07:00
sideband.h
sigchain.c
sigchain.h
split-index.c
split-index.h
strbuf.c Merge branch 'rs/use-strbuf-addbuf' into maint 2016-08-08 14:21:42 -07:00
strbuf.h Merge branch 'rs/use-strbuf-addbuf' into maint 2016-08-08 14:21:42 -07:00
streaming.c
streaming.h
string-list.c
string-list.h
submodule-config.c Merge branch 'sb/submodule-update-dot-branch' 2016-08-10 12:33:20 -07:00
submodule-config.h submodule-config: keep configured branch around 2016-08-01 14:42:07 -07:00
submodule.c allow do_submodule_path to work even if submodule isn't checked out 2016-08-31 18:07:10 -07:00
submodule.h
symlinks.c
tag.c
tag.h
tar.h
tempfile.c
tempfile.h
thread-utils.c
thread-utils.h
trace.c
trace.h
trailer.c die("bug"): report bugs consistently 2016-07-26 11:13:44 -07:00
trailer.h
transport-helper.c
transport.c Merge branch 'js/am-3-merge-recursive-direct' 2016-08-10 12:33:20 -07:00
transport.h
tree-diff.c
tree-walk.c
tree-walk.h
tree.c
tree.h
unicode_width.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c
unpack-trees.h
update_unicode.sh
upload-pack.c Merge branch 'jk/common-main' 2016-07-19 13:22:19 -07:00
url.c
url.h
urlmatch.c
urlmatch.h
usage.c
userdiff.c
userdiff.h
utf8.c
utf8.h
varint.c
varint.h
version.c
version.h
versioncmp.c
walker.c
walker.h
wildmatch.c
wildmatch.h
worktree.c Merge branch 'nd/worktree-lock' 2016-07-28 10:34:42 -07:00
worktree.h
wrap-for-bin.sh
wrapper.c Merge branch 'sb/submodule-parallel-fetch' into maint 2016-07-28 11:26:02 -07:00
write_or_die.c
ws.c
wt-status.c Merge branch 'js/am-3-merge-recursive-direct' 2016-08-10 12:33:20 -07:00
wt-status.h
xdiff-interface.c
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 http://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 http://news.gmane.org/gmane.comp.version-control.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