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Jeff King 9f48f2bd9a pull: update unborn branch tip after index
When commit d09e79c taught git to pull into an unborn
branch, it first updated the unborn branch to point at the
pulled commit, and then used read-tree to update the index
and working tree. That ordering made sense, since any
failure of the latter step would be due to filesystem
errors, and one could then recover with "git reset --hard".

Later, commit 4b3ffe5 added extra safety for existing files
in the working tree by asking read-tree to bail out when it
would overwrite such a file. This error mode is much less
"your pull failed due to random errors" and more like "we
reject this pull because it would lose data". In that case,
it makes sense not to update the HEAD ref, just as a regular
rejected merge would do.

This patch reverses the order of the update-ref and
read-tree calls, so that we do not touch the HEAD ref at all if a
merge is rejected. This also means that we would not update
HEAD in case of a transient filesystem error, but those are
presumably less rare (and one can still recover by repeating
the pull, or by accessing FETCH_HEAD directly).

While we're reorganizing the code, we can drop the "exit 1"
from the end of our command chain. We exit immediately
either way, and just calling exit without an argument will
use the exit code from the last command.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-20 15:51:25 -07:00
Documentation trivial: Add missing period in documentation 2013-05-28 15:15:29 -07:00
block-sha1
builtin Merge branch 'tr/remote-tighten-commandline-parsing' into maint 2013-05-03 15:12:38 -07:00
compat precompose-utf8: fix spelling of "want" in error message 2013-04-12 12:24:04 -07:00
contrib completion: zsh: don't override suffix on _detault 2013-05-03 15:10:05 -07:00
git-gui
git_remote_helpers
gitk-git
gitweb gitweb/INSTALL: Simplify description of GITWEB_CONFIG_SYSTEM 2013-04-15 07:25:46 -07:00
mergetools mergetools/kdiff3: do not use --auto when diffing 2013-05-09 11:59:39 -07:00
perl Merge branch 'tr/perl-keep-stderr-open' into maint 2013-04-22 11:26:55 -07:00
po doc: various spelling fixes 2013-04-12 12:00:52 -07:00
ppc
t t0070 "mktemp to unwritable directory" needs SANITY 2013-06-11 14:23:31 -07:00
templates pre-push.sample: Make the script executable 2013-06-11 11:22:00 -07:00
vcs-svn
xdiff Correct common spelling mistakes in comments and tests 2013-04-12 13:38:40 -07:00
.gitattributes
.gitignore
.mailmap mailmap: update Pasky's address 2013-04-04 13:03:34 -07:00
COPYING
GIT-VERSION-GEN Git 1.8.2.3 2013-05-09 13:31:17 -07:00
INSTALL Typo fix: replacing it's -> its 2013-04-11 17:39:05 -07:00
LGPL-2.1
Makefile
README
RelNotes Git 1.8.2.3 2013-05-09 13:31:17 -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 Sync with 1.8.1.6 2013-04-07 13:17:50 -07:00
attr.h
base85.c
bisect.c Merge branch 'jk/bisect-prn-unsigned' into maint 2013-04-12 13:41:46 -07:00
bisect.h
blob.c
blob.h
branch.c
branch.h
builtin.h
bulk-checkin.c
bulk-checkin.h
bundle.c bundle: Accept prerequisites without commit messages 2013-04-07 14:45:56 -07:00
bundle.h
cache-tree.c
cache-tree.h
cache.h Merge branch 'jk/alias-in-bare' into maint 2013-04-03 09:25:41 -07:00
check-builtins.sh
check-racy.c
check_bindir
color.c
color.h
column.c
column.h
combine-diff.c
command-list.txt
commit.c Correct common spelling mistakes in comments and tests 2013-04-12 13:38:40 -07:00
commit.h Correct common spelling mistakes in comments and tests 2013-04-12 13:38:40 -07:00
config.c
config.mak.in
config.mak.uname
configure.ac
connect.c
connected.c
connected.h
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
date.c
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c
diff-no-index.c
diff.c Merge branch 'jk/diff-algo-finishing-touches' into maint 2013-04-24 16:19:42 -07:00
diff.h
diffcore-break.c diffcore-break: don't divide by zero 2013-04-03 12:48:02 -07:00
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c diffcore-pickaxe: unify code for log -S/-G 2013-04-05 10:31:09 -07:00
diffcore-rename.c
diffcore.h
dir.c Sync with 1.8.1.6 2013-04-07 13:17:50 -07:00
dir.h
editor.c
entry.c Merge branch 'jk/checkout-attribute-lookup' into maint-1.8.1 2013-04-03 08:43:40 -07:00
environment.c Merge branch 'jk/alias-in-bare' into maint 2013-04-03 09:25:41 -07:00
exec_cmd.c
exec_cmd.h
fast-import.c
fetch-pack.c
fetch-pack.h
fixup-builtins
fmt-merge-msg.h
fsck.c
fsck.h
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl Correct common spelling mistakes in comments and tests 2013-04-12 13:38:40 -07:00
git-am.sh
git-archimport.perl
git-bisect.sh
git-compat-util.h Merge branch 'jk/a-thread-only-dies-once' into maint 2013-04-26 11:25:59 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl Correct common spelling mistakes in comments and tests 2013-04-12 13:38:40 -07:00
git-difftool--helper.sh
git-difftool.perl
git-filter-branch.sh Merge branch 'jk/filter-branch-come-back-to-original' into maint 2013-04-22 11:26:55 -07:00
git-instaweb.sh
git-lost-found.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py
git-parse-remote.sh
git-pull.sh pull: update unborn branch tip after index 2013-06-20 15:51:25 -07:00
git-quiltimport.sh Correct common spelling mistakes in comments and tests 2013-04-12 13:38:40 -07:00
git-rebase--am.sh
git-rebase--interactive.sh
git-rebase--merge.sh
git-rebase.sh
git-relink.perl
git-remote-testgit
git-remote-testpy.py
git-repack.sh
git-request-pull.sh
git-send-email.perl
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh
git-submodule.sh
git-svn.perl
git-web--browse.sh
git.c Merge branch 'jk/alias-in-bare' into maint 2013-04-03 09:25:41 -07:00
git.spec.in
gpg-interface.c Merge branch 'mg/gpg-interface-using-status' into maint 2013-04-03 09:26:27 -07:00
gpg-interface.h
graph.c
graph.h
grep.c
grep.h
hash.c
hash.h
help.c help.c: add a compatibility comment to cmd_version() 2013-04-16 15:01:30 -07:00
help.h
hex.c
http-backend.c
http-fetch.c
http-push.c
http-walker.c
http.c
http.h
ident.c
imap-send.c Merge branch 'ob/imap-send-ssl-verify' into maint-1.8.1 2013-04-03 08:35:33 -07:00
kwset.c kwset: fix spelling in comments 2013-04-12 12:25:08 -07:00
kwset.h
levenshtein.c
levenshtein.h
list-objects.c
list-objects.h
ll-merge.c
ll-merge.h
lockfile.c
log-tree.c Merge branch 'mg/gpg-interface-using-status' into maint 2013-04-03 09:26:27 -07:00
log-tree.h
mailmap.c
mailmap.h
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c
merge-recursive.h
merge.c
mergesort.c
mergesort.h
name-hash.c Sync with 1.8.1 maintenance track 2013-04-03 09:18:01 -07:00
notes-cache.c
notes-cache.h
notes-merge.c
notes-merge.h
notes.c
notes.h
object.c
object.h
pack-check.c
pack-refs.c
pack-refs.h
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
pager.c
parse-options-cb.c
parse-options.c
parse-options.h
patch-delta.c
patch-ids.c
patch-ids.h
path.c
pathspec.c
pathspec.h
pkt-line.c
pkt-line.h
preload-index.c
pretty.c pretty: handle broken commit headers gracefully 2013-04-17 14:50:36 -07:00
progress.c
progress.h
prompt.c
prompt.h
quote.c
quote.h
reachable.c
reachable.h
read-cache.c Sync with 1.8.1 maintenance track 2013-04-03 09:18:01 -07:00
reflog-walk.c
reflog-walk.h
refs.c Sync with 1.8.1 maintenance track 2013-04-03 09:18:01 -07:00
refs.h
remote-curl.c
remote-testsvn.c
remote.c
remote.h
replace_object.c
rerere.c rerere forget: do not segfault if not all stages are present 2013-04-04 12:27:28 -07:00
rerere.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'tr/copy-revisions-from-stdin' into maint 2013-05-09 12:42:17 -07:00
revision.h
run-command.c Merge branch 'jk/a-thread-only-dies-once' into maint 2013-04-26 11:25:59 -07:00
run-command.h
send-pack.c
send-pack.h
sequencer.c Correct common spelling mistakes in comments and tests 2013-04-12 13:38:40 -07:00
sequencer.h
server-info.c
setup.c Merge branch 'jk/alias-in-bare' into maint 2013-04-03 09:25:41 -07:00
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
sha1_file.c
sha1_name.c
shallow.c
shell.c
shortlog.h
show-index.c
sideband.c
sideband.h
sigchain.c
sigchain.h
strbuf.c
strbuf.h
streaming.c
streaming.h
string-list.c
string-list.h
submodule.c
submodule.h
symlinks.c
tag.c
tag.h
tar.h
test-chmtime.c
test-ctype.c
test-date.c
test-delta.c
test-dump-cache-tree.c
test-genrandom.c
test-index-version.c
test-line-buffer.c
test-match-trees.c
test-mergesort.c
test-mktemp.c
test-parse-options.c
test-path-utils.c
test-regex.c
test-revision-walking.c
test-run-command.c
test-scrap-cache-tree.c
test-sha1.c
test-sha1.sh
test-sigchain.c
test-string-list.c
test-subprocess.c
test-svn-fe.c
test-wildmatch.c
thread-utils.c
thread-utils.h
trace.c
transport-helper.c transport-helper: trivial style cleanup 2013-05-09 11:33:01 -07:00
transport.c
transport.h Correct common spelling mistakes in comments and tests 2013-04-12 13:38:40 -07:00
tree-diff.c
tree-walk.c
tree-walk.h
tree.c
tree.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c
unpack-trees.h
upload-pack.c Merge branch 'jk/peel-ref' into maint 2013-04-04 12:59:55 -07:00
url.c
url.h
usage.c Merge branch 'jk/a-thread-only-dies-once' into maint 2013-04-26 11:25:59 -07:00
userdiff.c
userdiff.h
utf8.c Merge branch 'ks/rfc2047-one-char-at-a-time' into maint 2013-04-03 09:25:29 -07:00
utf8.h Merge branch 'ks/rfc2047-one-char-at-a-time' into maint 2013-04-03 09:25:29 -07:00
varint.c
varint.h
version.c
version.h
walker.c
walker.h
wildmatch.c
wildmatch.h
wrap-for-bin.sh
wrapper.c
write_or_die.c
ws.c
wt-status.c Merge branch 'tb/document-status-u-tradeoff' into maint 2013-04-12 08:12:47 -07:00
wt-status.h
xdiff-interface.c
xdiff-interface.h
zlib.c

README

////////////////////////////////////////////////////////////////

	Git - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, 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

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.

See Documentation/gittutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands, and
Documentation/git-commandname.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).

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

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.