gitweb.git
Merge branch 'jk/symbolic-ref'Junio C Hamano Tue, 26 Jan 2016 23:40:30 +0000 (15:40 -0800)

Merge branch 'jk/symbolic-ref'

The low-level code that is used to create symbolic references has
been updated to share more code with the code that deals with
normal references.

* jk/symbolic-ref:
lock_ref_sha1_basic: handle REF_NODEREF with invalid refs
lock_ref_sha1_basic: always fill old_oid while holding lock
checkout,clone: check return value of create_symref
create_symref: write reflog while holding lock
create_symref: use existing ref-lock code
create_symref: modernize variable names

Merge branch 'ak/format-patch-odir-config'Junio C Hamano Tue, 26 Jan 2016 23:40:30 +0000 (15:40 -0800)

Merge branch 'ak/format-patch-odir-config'

"git format-patch" learned to notice format.outputDirectory
configuration variable. This allows "-o <dir>" option to be
omitted on the command line if you always use the same directory in
your workflow.

* ak/format-patch-odir-config:
format-patch: introduce format.outputDirectory configuration

Merge branch 'rp/p4-filetype-change'Junio C Hamano Tue, 26 Jan 2016 23:40:29 +0000 (15:40 -0800)

Merge branch 'rp/p4-filetype-change'

* rp/p4-filetype-change:
git-p4.py: add support for filetype change

Merge branch 'js/close-packs-before-gc'Junio C Hamano Tue, 26 Jan 2016 23:40:29 +0000 (15:40 -0800)

Merge branch 'js/close-packs-before-gc'

Many codepaths that run "gc --auto" before exiting kept packfiles
mapped and left the file descriptors to them open, which was not
friendly to systems that cannot remove files that are open. They
now close the packs before doing so.

* js/close-packs-before-gc:
receive-pack: release pack files before garbage-collecting
merge: release pack files before garbage-collecting
am: release pack files before garbage-collecting
fetch: release pack files before garbage-collecting

Merge branch 'jk/ok-to-fail-gc-auto-in-rebase'Junio C Hamano Tue, 26 Jan 2016 23:40:29 +0000 (15:40 -0800)

Merge branch 'jk/ok-to-fail-gc-auto-in-rebase'

"git rebase", unlike all other callers of "gc --auto", did not
ignore the exit code from "gc --auto".

* jk/ok-to-fail-gc-auto-in-rebase:
rebase: ignore failures from "gc --auto"

Merge branch 'js/pull-rebase-i'Junio C Hamano Tue, 26 Jan 2016 23:40:28 +0000 (15:40 -0800)

Merge branch 'js/pull-rebase-i'

"git pull --rebase" has been extended to allow invoking
"rebase -i".

* js/pull-rebase-i:
completion: add missing branch.*.rebase values
remote: handle the config setting branch.*.rebase=interactive
pull: allow interactive rebase with --rebase=interactive

Merge branch 'ep/shell-command-substitution-style'Junio C Hamano Fri, 22 Jan 2016 21:08:46 +0000 (13:08 -0800)

Merge branch 'ep/shell-command-substitution-style'

A shell script style update to change `command substitution` into
$(command substitution). Coverts contrib/ and much of the t/
directory contents.

* ep/shell-command-substitution-style: (92 commits)
t9901-git-web--browse.sh: use the $( ... ) construct for command substitution
t9501-gitweb-standalone-http-status.sh: use the $( ... ) construct for command substitution
t9350-fast-export.sh: use the $( ... ) construct for command substitution
t9300-fast-import.sh: use the $( ... ) construct for command substitution
t9150-svk-mergetickets.sh: use the $( ... ) construct for command substitution
t9145-git-svn-master-branch.sh: use the $( ... ) construct for command substitution
t9138-git-svn-authors-prog.sh: use the $( ... ) construct for command substitution
t9137-git-svn-dcommit-clobber-series.sh: use the $( ... ) construct for command substitution
t9132-git-svn-broken-symlink.sh: use the $( ... ) construct for command substitution
t9130-git-svn-authors-file.sh: use the $( ... ) construct for command substitution
t9129-git-svn-i18n-commitencoding.sh: use the $( ... ) construct for command substitution
t9119-git-svn-info.sh: use the $( ... ) construct for command substitution
t9118-git-svn-funky-branch-names.sh: use the $( ... ) construct for command substitution
t9114-git-svn-dcommit-merge.sh: use the $( ... ) construct for command substitution
t9110-git-svn-use-svm-props.sh: use the $( ... ) construct for command substitution
t9109-git-svn-multi-glob.sh: use the $( ... ) construct for command substitution
t9108-git-svn-glob.sh: use the $( ... ) construct for command substitution
t9107-git-svn-migrate.sh: use the $( ... ) construct for command substitution
t9105-git-svn-commit-diff.sh: use the $( ... ) construct for command substitution
t9104-git-svn-follow-parent.sh: use the $( ... ) construct for command substitution
...

Merge branch 'rm/subtree-unwrap-tags'Junio C Hamano Fri, 22 Jan 2016 21:08:45 +0000 (13:08 -0800)

Merge branch 'rm/subtree-unwrap-tags'

"git subtree" (in contrib/) records the tag object name in the
commit log message when a subtree is added using a tag, without
peeling it down to the underlying commit. The tag needs to be
peeled when "git subtree split" wants to work on the commit, but
the command forgot to do so.

* rm/subtree-unwrap-tags:
contrib/subtree: unwrap tag refs

Second batch for 2.8 cycleJunio C Hamano Wed, 20 Jan 2016 19:54:46 +0000 (11:54 -0800)

Second batch for 2.8 cycle

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'tg/grep-no-index-fallback'Junio C Hamano Wed, 20 Jan 2016 19:43:38 +0000 (11:43 -0800)

Merge branch 'tg/grep-no-index-fallback'

"git grep" by default does not fall back to its "--no-index"
behaviour outside a directory under Git's control (otherwise the
user may by mistake end up running a huge recursive search); with a
new configuration (set in $HOME/.gitconfig--by definition this
cannot be set in the config file per project), this safety can be
disabled.

* tg/grep-no-index-fallback:
builtin/grep: add grep.fallbackToNoIndex config
t7810: correct --no-index test

Merge branch 'ho/gitweb-squelch-undef-warning'Junio C Hamano Wed, 20 Jan 2016 19:43:36 +0000 (11:43 -0800)

Merge branch 'ho/gitweb-squelch-undef-warning'

Asking gitweb for a nonexistent commit left a warning in the server
log.

Somebody may want to follow this up with a new test, perhaps?
IIRC, we do test that no Perl warnings are given to the server log,
so this should have been caught if our test coverage were good.

* ho/gitweb-squelch-undef-warning:
gitweb: squelch "uninitialized value" warning

Merge branch 'js/fopen-harder'Junio C Hamano Wed, 20 Jan 2016 19:43:35 +0000 (11:43 -0800)

Merge branch 'js/fopen-harder'

Some codepaths used fopen(3) when opening a fixed path in $GIT_DIR
(e.g. COMMIT_EDITMSG) that is meant to be left after the command is
done. This however did not work well if the repository is set to
be shared with core.sharedRepository and the umask of the previous
user is tighter. They have been made to work better by calling
unlink(2) and retrying after fopen(3) fails with EPERM.

* js/fopen-harder:
Handle more file writes correctly in shared repos
commit: allow editing the commit message even in shared repos

Merge branch 'ss/clone-depth-single-doc'Junio C Hamano Wed, 20 Jan 2016 19:43:35 +0000 (11:43 -0800)

Merge branch 'ss/clone-depth-single-doc'

Documentation for "git fetch --depth" has been updated for clarity.

* ss/clone-depth-single-doc:
docs: clarify that --depth for git-fetch works with newly initialized repos
docs: say "commits" in the --depth option wording for git-clone
docs: clarify that passing --depth to git-clone implies --single-branch

Merge branch 'nd/exclusion-regression-fix'Junio C Hamano Wed, 20 Jan 2016 19:43:33 +0000 (11:43 -0800)

Merge branch 'nd/exclusion-regression-fix'

The ignore mechanism saw a few regressions around untracked file
listing and sparse checkout selection areas in 2.7.0; the change
that is responsible for the regression has been reverted.

* nd/exclusion-regression-fix:
Revert "dir.c: don't exclude whole dir prematurely if neg pattern may match"

Merge branch 'dk/reflog-walk-with-non-commit'Junio C Hamano Wed, 20 Jan 2016 19:43:32 +0000 (11:43 -0800)

Merge branch 'dk/reflog-walk-with-non-commit'

"git reflog" incorrectly assumed that all objects that used to be
at the tip of a ref must be commits, which caused it to segfault.

* dk/reflog-walk-with-non-commit:
reflog-walk: don't segfault on non-commit sha1's in the reflog

Merge branch 'sg/t6050-failing-editor-test-fix'Junio C Hamano Wed, 20 Jan 2016 19:43:31 +0000 (11:43 -0800)

Merge branch 'sg/t6050-failing-editor-test-fix'

* sg/t6050-failing-editor-test-fix:
t6050-replace: make failing editor test more robust

Merge branch 'ew/for-each-ref-doc'Junio C Hamano Wed, 20 Jan 2016 19:43:30 +0000 (11:43 -0800)

Merge branch 'ew/for-each-ref-doc'

* ew/for-each-ref-doc:
for-each-ref: document `creatordate` and `creator` fields

Merge branch 'dw/signoff-doc'Junio C Hamano Wed, 20 Jan 2016 19:43:29 +0000 (11:43 -0800)

Merge branch 'dw/signoff-doc'

The documentation has been updated to hint the connection between
the '--signoff' option and DCO.

* dw/signoff-doc:
Expand documentation describing --signoff

Merge branch 'jk/clang-pedantic'Junio C Hamano Wed, 20 Jan 2016 19:43:29 +0000 (11:43 -0800)

Merge branch 'jk/clang-pedantic'

A few unportable C construct have been spotted by clang compiler
and have been fixed.

* jk/clang-pedantic:
bswap: add NO_UNALIGNED_LOADS define
avoid shifting signed integers 31 bits

Merge branch 'ew/send-email-mutt-alias-fix'Junio C Hamano Wed, 20 Jan 2016 19:43:28 +0000 (11:43 -0800)

Merge branch 'ew/send-email-mutt-alias-fix'

"git send-email" was confused by escaped quotes stored in the alias
files saved by "mutt", which has been corrected.

* ew/send-email-mutt-alias-fix:
git-send-email: do not double-escape quotes from mutt

Merge branch 'ss/user-manual'Junio C Hamano Wed, 20 Jan 2016 19:43:27 +0000 (11:43 -0800)

Merge branch 'ss/user-manual'

Drop a few old "todo" items by deciding that the change one of them
suggests is not such a good idea, and doing the change the other
one suggested to do.

* ss/user-manual:
user-manual: add addition gitweb information
user-manual: add section documenting shallow clones
glossary: define the term shallow clone
user-manual: remove temporary branch entry from todo list

Merge branch 'nd/clear-gitenv-upon-use-of-alias'Junio C Hamano Wed, 20 Jan 2016 19:43:26 +0000 (11:43 -0800)

Merge branch 'nd/clear-gitenv-upon-use-of-alias'

d95138e6 (setup: set env $GIT_WORK_TREE when work tree is set, like
$GIT_DIR, 2015-06-26) attempted to work around a glitch in alias
handling by overwriting GIT_WORK_TREE environment variable to
affect subprocesses when set_git_work_tree() gets called, which
resulted in a rather unpleasant regression to "clone" and "init".
Try to address the same issue by always restoring the environment
and respawning the real underlying command when handling alias.

* nd/clear-gitenv-upon-use-of-alias:
run-command: don't warn on SIGPIPE deaths
git.c: make sure we do not leak GIT_* to alias scripts
setup.c: re-fix d95138e (setup: set env $GIT_WORK_TREE when ..
git.c: make it clear save_env() is for alias handling only

Merge branch 'nd/ita-cleanup'Junio C Hamano Wed, 20 Jan 2016 19:43:25 +0000 (11:43 -0800)

Merge branch 'nd/ita-cleanup'

Paths that have been told the index about with "add -N" are not
quite yet in the index, but a few commands behaved as if they
already are in a harmful way.

* nd/ita-cleanup:
grep: make it clear i-t-a entries are ignored
add and use a convenience macro ce_intent_to_add()
blame: remove obsolete comment

Merge branch 'nd/dir-exclude-cleanup'Junio C Hamano Wed, 20 Jan 2016 19:43:24 +0000 (11:43 -0800)

Merge branch 'nd/dir-exclude-cleanup'

The "exclude_list" structure has the usual "alloc, nr" pair of
fields to be used by ALLOC_GROW(), but clear_exclude_list() forgot
to reset 'alloc' to 0 when it cleared 'nr'to discard the managed
array.

* nd/dir-exclude-cleanup:
dir.c: clean the entire struct in clear_exclude_list()

Merge branch 'jk/pack-revindex'Junio C Hamano Wed, 20 Jan 2016 19:43:22 +0000 (11:43 -0800)

Merge branch 'jk/pack-revindex'

In-core storage of the reverse index for .pack files (which lets
you go from a pack offset to an object name) has been streamlined.

* jk/pack-revindex:
pack-revindex: store entries directly in packed_git
pack-revindex: drop hash table

Merge branch 'mh/notes-allow-reading-treeish'Junio C Hamano Wed, 20 Jan 2016 19:43:21 +0000 (11:43 -0800)

Merge branch 'mh/notes-allow-reading-treeish'

Some "git notes" operations, e.g. "git log --notes=<note>", should
be able to read notes from any tree-ish that is shaped like a notes
tree, but the notes infrastructure required that the argument must
be a ref under refs/notes/. Loosen it to require a valid ref only
when the operation would update the notes (in which case we must
have a place to store the updated notes tree, iow, a ref).

* mh/notes-allow-reading-treeish:
notes: allow treeish expressions as notes ref

completion: add missing branch.*.rebase valuesJohannes Schindelin Wed, 13 Jan 2016 12:17:22 +0000 (13:17 +0100)

completion: add missing branch.*.rebase values

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

remote: handle the config setting branch.*.rebase=inter... Johannes Schindelin Wed, 13 Jan 2016 12:17:19 +0000 (13:17 +0100)

remote: handle the config setting branch.*.rebase=interactive

The config variable branch.<branchname>.rebase is not only used by `git
pull`, but also by `git remote` when showing details about a remote.
Therefore, it needs to be taught to accept the newly-introduced
`interactive` value of said variable.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

pull: allow interactive rebase with --rebase=interactiveJohannes Schindelin Wed, 13 Jan 2016 12:17:15 +0000 (13:17 +0100)

pull: allow interactive rebase with --rebase=interactive

A couple of years ago, I found the need to collaborate on topic
branches that were rebased all the time, and I really needed to see
what I was rebasing when pulling, so I introduced an
interactively-rebasing pull.

The way builtin pull works, this change also supports the value
'interactive' for the 'branch.<name>.rebase' config variable, which
is a neat thing because users can now configure given branches for
interactively-rebasing pulls without having to type out the complete
`--rebase=interactive` option every time they pull.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

rebase: ignore failures from "gc --auto"Jeff King Wed, 13 Jan 2016 18:47:18 +0000 (13:47 -0500)

rebase: ignore failures from "gc --auto"

After rebasing, we call "gc --auto" to clean up if we
created a lot of loose objects. However, we do so inside an
&&-chain. If "gc --auto" fails (e.g., because a previous
background gc blocked us by leaving "gc.log" in place),
then:

1. We will fail to clean up the state directory, leaving
the user stuck in the rebase forever (even "git am
--abort" doesn't work, because it calls "gc --auto"!).

2. In some cases, we may return a bogus exit code from
rebase, indicating failure when everything except the
auto-gc succeeded.

We can fix this by ignoring the exit code of "gc --auto".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

receive-pack: release pack files before garbage-collectingJohannes Schindelin Wed, 13 Jan 2016 17:20:26 +0000 (18:20 +0100)

receive-pack: release pack files before garbage-collecting

Before auto-gc'ing, we need to make sure that the pack files are
released in case they need to be repacked and garbage-collected.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

merge: release pack files before garbage-collectingJohannes Schindelin Wed, 13 Jan 2016 17:20:21 +0000 (18:20 +0100)

merge: release pack files before garbage-collecting

Before auto-gc'ing, we need to make sure that the pack files are
released in case they need to be repacked and garbage-collected.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

am: release pack files before garbage-collectingJohannes Schindelin Wed, 13 Jan 2016 17:20:16 +0000 (18:20 +0100)

am: release pack files before garbage-collecting

Before auto-gc'ing, we need to make sure that the pack files are
released in case they need to be repacked and garbage-collected.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

fetch: release pack files before garbage-collectingJohannes Schindelin Wed, 13 Jan 2016 17:20:11 +0000 (18:20 +0100)

fetch: release pack files before garbage-collecting

Before auto-gc'ing, we need to make sure that the pack files are
released in case they need to be repacked and garbage-collected.

This fixes https://github.com/git-for-windows/git/issues/500

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

format-patch: introduce format.outputDirectory configur... Alexander Kuleshov Wed, 13 Jan 2016 13:20:11 +0000 (06:20 -0700)

format-patch: introduce format.outputDirectory configuration

We can pass -o/--output-directory to the format-patch command to store
patches in some place other than the working directory. This patch
introduces format.outputDirectory configuration option for same
purpose.

The case of usage of this configuration option can be convenience
to not pass every time -o/--output-directory if an user has pattern
to store all patches in the /patches directory for example.

The format.outputDirectory has lower priority than command line
option, so if user will set format.outputDirectory and pass the
command line option, a result will be stored in a directory that
passed to command line option.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Stephen P. Smith <ischis2@cox.net>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-p4.py: add support for filetype changeRomain Picard Tue, 12 Jan 2016 12:43:47 +0000 (13:43 +0100)

git-p4.py: add support for filetype change

After changing the type of a file in the git repository, it is not possible to
"git p4 publish" the commit to perforce. This is due to the fact that the git
"T" status is not handled in git-p4.py. This can typically occur when replacing
an existing file with a symbolic link.

The "T" modifier is now supported in git-p4.py. When a file type has changed,
inform perforce with the "p4 edit -f auto" command.

Signed-off-by: Romain Picard <romain.picard@oakbits.com>
Acked-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

lock_ref_sha1_basic: handle REF_NODEREF with invalid... Jeff King Tue, 12 Jan 2016 21:45:09 +0000 (16:45 -0500)

lock_ref_sha1_basic: handle REF_NODEREF with invalid refs

We sometimes call lock_ref_sha1_basic with REF_NODEREF
to operate directly on a symbolic ref. This is used, for
example, to move to a detached HEAD, or when updating
the contents of HEAD via checkout or symbolic-ref.

However, the first step of the function is to resolve the
refname to get the "old" sha1, and we do so without telling
resolve_ref_unsafe() that we are only interested in the
symref. As a result, we may detect a problem there not with
the symref itself, but with something it points to.

The real-world example I found (and what is used in the test
suite) is a HEAD pointing to a ref that cannot exist,
because it would cause a directory/file conflict with other
existing refs. This situation is somewhat broken, of
course, as trying to _commit_ on that HEAD would fail. But
it's not explicitly forbidden, and we should be able to move
away from it. However, neither "git checkout" nor "git
symbolic-ref" can do so. We try to take the lock on HEAD,
which is pointing to a non-existent ref. We bail from
resolve_ref_unsafe() with errno set to EISDIR, and the lock
code thinks we are attempting to create a d/f conflict.

Of course we're not. The problem is that the lock code has
no idea what level we were at when we got EISDIR, so trying
to diagnose or remove empty directories for HEAD is not
useful.

To make things even more complicated, we only get EISDIR in
the loose-ref case. If the refs are packed, the resolution
may "succeed", giving us the pointed-to ref in "refname",
but a null oid. Later, we say "ah, the null oid means we are
creating; let's make sure there is room for it", but
mistakenly check against the _resolved_ refname, not the
original.

We can fix this by making two tweaks:

1. Call resolve_ref_unsafe() with RESOLVE_REF_NO_RECURSE
when REF_NODEREF is set. This means any errors
we get will be from the orig_refname, and we can act
accordingly.

We already do this in the REF_DELETING case, but we
should do it for update, too.

2. If we do get a "refname" return from
resolve_ref_unsafe(), even with RESOLVE_REF_NO_RECURSE
it may be the name of the ref pointed-to by a symref.
We already normalize this back to orig_refname before
taking the lockfile, but we need to do so before the
null_oid check.

While we're rearranging the REF_NODEREF handling, we can
also bump the initialization of lflags to the top of the
function, where we are setting up other flags. This saves us
from having yet another conditional block on REF_NODEREF
just to set it later.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

lock_ref_sha1_basic: always fill old_oid while holding... Jeff King Tue, 12 Jan 2016 21:44:39 +0000 (16:44 -0500)

lock_ref_sha1_basic: always fill old_oid while holding lock

Our basic strategy for taking a ref lock is:

1. Create $ref.lock to take the lock

2. Read the ref again while holding the lock (during which
time we know that nobody else can be updating it).

3. Compare the value we read to the expected "old_sha1"

The value we read in step (2) is returned to the caller via
the lock->old_oid field, who may use it for other purposes
(such as writing a reflog).

If we have no "old_sha1" (i.e., we are unconditionally
taking the lock), then we obviously must omit step 3. But we
_also_ omit step 2. This seems like a nice optimization, but
it means that the caller sees only whatever was left in
lock->old_oid from previous calls to resolve_ref_unsafe(),
which happened outside of the lock.

We can demonstrate this race pretty easily. Imagine you have
three commits, $one, $two, and $three. One script just flips
between $one and $two, without providing an old-sha1:

while true; do
git update-ref -m one refs/heads/foo $one
git update-ref -m two refs/heads/foo $two
done

Meanwhile, another script tries to set the value to $three,
also not using an old-sha1:

while true; do
git update-ref -m three refs/heads/foo $three
done

If these run simultaneously, we'll see a lot of lock
contention, but each of the writes will succeed some of the
time. The reflog may record movements between any of the
three refs, but we would expect it to provide a consistent
log: the "from" field of each log entry should be the same
as the "to" field of the previous one.

But if we check this:

perl -alne '
print "mismatch on line $."
if defined $last && $F[0] ne $last;
$last = $F[1];
' .git/logs/refs/heads/foo

we'll see many mismatches. Why?

Because sometimes, in the time between lock_ref_sha1_basic
filling lock->old_oid via resolve_ref_unsafe() and it taking
the lock, there may be a complete write by another process.
And the "from" field in our reflog entry will be wrong, and
will refer to an older value.

This is probably quite rare in practice. It requires writers
which do not provide an old-sha1 value, and it is a very
quick race. However, it is easy to fix: we simply perform
step (2), the read-under-lock, whether we have an old-sha1
or not. Then the value we hand back to the caller is always
atomic.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Sync with maintJunio C Hamano Tue, 12 Jan 2016 23:21:00 +0000 (15:21 -0800)

Sync with maint

* maint:
l10n: ko.po: Add Korean translation

First batch for post 2.7 cycleJunio C Hamano Tue, 12 Jan 2016 23:20:51 +0000 (15:20 -0800)

First batch for post 2.7 cycle

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'vl/grep-configurable-threads'Junio C Hamano Tue, 12 Jan 2016 23:16:55 +0000 (15:16 -0800)

Merge branch 'vl/grep-configurable-threads'

"git grep" can now be configured (or told from the command line)
how many threads to use when searching in the working tree files.

* vl/grep-configurable-threads:
grep: add --threads=<num> option and grep.threads configuration
grep: slight refactoring to the code that disables threading
grep: allow threading even on a single-core machine

Merge branch 'ea/blame-progress'Junio C Hamano Tue, 12 Jan 2016 23:16:54 +0000 (15:16 -0800)

Merge branch 'ea/blame-progress'

"git blame" learned to produce the progress eye-candy when it takes
too much time before emitting the first line of the result.

* ea/blame-progress:
blame: add support for --[no-]progress option

Merge branch 'sb/submodule-parallel-fetch'Junio C Hamano Tue, 12 Jan 2016 23:16:54 +0000 (15:16 -0800)

Merge branch 'sb/submodule-parallel-fetch'

Add a framework to spawn a group of processes in parallel, and use
it to run "git fetch --recurse-submodules" in parallel.

Rerolled and this seems to be a lot cleaner. The merge of the
earlier one to 'next' has been reverted.

* sb/submodule-parallel-fetch:
submodules: allow parallel fetching, add tests and documentation
fetch_populated_submodules: use new parallel job processing
run-command: add an asynchronous parallel child processor
sigchain: add command to pop all common signals
strbuf: add strbuf_read_once to read without blocking
xread: poll on non blocking fds
submodule.c: write "Fetching submodule <foo>" to stderr

Merge branch 'ps/push-delete-option'Junio C Hamano Tue, 12 Jan 2016 23:16:53 +0000 (15:16 -0800)

Merge branch 'ps/push-delete-option'

"branch --delete" has "branch -d" but "push --delete" does not.

* ps/push-delete-option:
push: add '-d' as shorthand for '--delete'
push: add '--delete' flag to synopsis

Merge branch 'ep/make-phoney'Junio C Hamano Tue, 12 Jan 2016 23:16:53 +0000 (15:16 -0800)

Merge branch 'ep/make-phoney'

A slight update to the Makefile.

* ep/make-phoney:
Makefile: add missing phony target

Merge branch 'nd/stop-setenv-work-tree'Junio C Hamano Tue, 12 Jan 2016 23:16:53 +0000 (15:16 -0800)

Merge branch 'nd/stop-setenv-work-tree'

An earlier change in 2.5.x-era broke users' hooks and aliases by
exporting GIT_WORK_TREE to point at the root of the working tree,
interfering when they tried to use a different working tree without
setting GIT_WORK_TREE environment themselves.

* nd/stop-setenv-work-tree:
Revert "setup: set env $GIT_WORK_TREE when work tree is set, like $GIT_DIR"

notes: allow treeish expressions as notes refMike Hommey Thu, 8 Oct 2015 02:54:43 +0000 (11:54 +0900)

notes: allow treeish expressions as notes ref

init_notes() is the main point of entry to the notes API. It ensures
that the input can be used as ref, because it needs a ref to update to
store notes tree after modifying it.

There however are many use cases where notes tree is only read, e.g.
"git log --notes=...". Any notes-shaped treeish could be used for such
purpose, but it is not allowed due to existing restriction.

Allow treeish expressions to be used in the case the notes tree is going
to be used without write "permissions". Add a flag to distinguish
whether the notes tree is intended to be used read-only, or will be
updated.

With this change, operations that use notes read-only can be fed any
notes-shaped tree-ish can be used, e.g. git log --notes=notes@{1}.

Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'maint' of git://github.com/git-l10n/git... Junio C Hamano Tue, 12 Jan 2016 23:05:05 +0000 (15:05 -0800)

Merge branch 'maint' of git://github.com/git-l10n/git-po into maint

* 'maint' of git://github.com/git-l10n/git-po:
l10n: ko.po: Add Korean translation

gitweb: squelch "uninitialized value" warningØyvind A. Holm Tue, 12 Jan 2016 03:31:56 +0000 (04:31 +0100)

gitweb: squelch "uninitialized value" warning

git_object() chomps $type that is read from "cat-file -t", but
it does so before checking if $type is defined, resulting in
a Perl warning in the server error log:

gitweb.cgi: Use of uninitialized value $type in scalar chomp at
[...]/gitweb.cgi line 7579., referer: [...]

when trying to access a non-existing commit, for example:

http://HOST/?p=PROJECT.git;a=commit;h=NON_EXISTING_COMMIT

Check the value in $type before chomping. This will cause us to
call href with its action parameter set to undef when formulating
the URL to redirect to, but that is harmless, as the function treats
a parameter that set to undef as if it does not exist.

Signed-off-by: Øyvind A. Holm <sunny@sunbase.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9901-git-web--browse.sh: use the $( ... ) construct... Elia Pinto Tue, 12 Jan 2016 11:49:38 +0000 (11:49 +0000)

t9901-git-web--browse.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9501-gitweb-standalone-http-status.sh: use the $(... Elia Pinto Tue, 12 Jan 2016 11:49:37 +0000 (11:49 +0000)

t9501-gitweb-standalone-http-status.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9350-fast-export.sh: use the $( ... ) construct for... Elia Pinto Tue, 12 Jan 2016 11:49:36 +0000 (11:49 +0000)

t9350-fast-export.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9300-fast-import.sh: use the $( ... ) construct for... Elia Pinto Tue, 12 Jan 2016 11:49:35 +0000 (11:49 +0000)

t9300-fast-import.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9150-svk-mergetickets.sh: use the $( ... ) construct... Elia Pinto Tue, 12 Jan 2016 11:49:34 +0000 (11:49 +0000)

t9150-svk-mergetickets.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9145-git-svn-master-branch.sh: use the $( ... ) constr... Elia Pinto Tue, 12 Jan 2016 11:49:33 +0000 (11:49 +0000)

t9145-git-svn-master-branch.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9138-git-svn-authors-prog.sh: use the $( ... ) constru... Elia Pinto Tue, 12 Jan 2016 11:49:32 +0000 (11:49 +0000)

t9138-git-svn-authors-prog.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9137-git-svn-dcommit-clobber-series.sh: use the $... Elia Pinto Tue, 12 Jan 2016 11:49:31 +0000 (11:49 +0000)

t9137-git-svn-dcommit-clobber-series.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9132-git-svn-broken-symlink.sh: use the $( ... ) const... Elia Pinto Tue, 12 Jan 2016 11:49:30 +0000 (11:49 +0000)

t9132-git-svn-broken-symlink.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9130-git-svn-authors-file.sh: use the $( ... ) constru... Elia Pinto Tue, 12 Jan 2016 11:49:29 +0000 (11:49 +0000)

t9130-git-svn-authors-file.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9129-git-svn-i18n-commitencoding.sh: use the $( .... Elia Pinto Tue, 12 Jan 2016 11:49:28 +0000 (11:49 +0000)

t9129-git-svn-i18n-commitencoding.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9119-git-svn-info.sh: use the $( ... ) construct for... Elia Pinto Tue, 12 Jan 2016 11:49:27 +0000 (11:49 +0000)

t9119-git-svn-info.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9118-git-svn-funky-branch-names.sh: use the $( ..... Elia Pinto Tue, 12 Jan 2016 10:45:18 +0000 (10:45 +0000)

t9118-git-svn-funky-branch-names.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9114-git-svn-dcommit-merge.sh: use the $( ... ) constr... Elia Pinto Tue, 12 Jan 2016 10:45:17 +0000 (10:45 +0000)

t9114-git-svn-dcommit-merge.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9110-git-svn-use-svm-props.sh: use the $( ... ) constr... Elia Pinto Tue, 12 Jan 2016 10:45:16 +0000 (10:45 +0000)

t9110-git-svn-use-svm-props.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9109-git-svn-multi-glob.sh: use the $( ... ) construct... Elia Pinto Tue, 12 Jan 2016 10:45:15 +0000 (10:45 +0000)

t9109-git-svn-multi-glob.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9108-git-svn-glob.sh: use the $( ... ) construct for... Elia Pinto Tue, 12 Jan 2016 10:45:14 +0000 (10:45 +0000)

t9108-git-svn-glob.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9107-git-svn-migrate.sh: use the $( ... ) construct... Elia Pinto Tue, 12 Jan 2016 10:45:13 +0000 (10:45 +0000)

t9107-git-svn-migrate.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9105-git-svn-commit-diff.sh: use the $( ... ) construc... Elia Pinto Tue, 12 Jan 2016 10:45:12 +0000 (10:45 +0000)

t9105-git-svn-commit-diff.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9104-git-svn-follow-parent.sh: use the $( ... ) constr... Elia Pinto Tue, 12 Jan 2016 10:45:11 +0000 (10:45 +0000)

t9104-git-svn-follow-parent.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9101-git-svn-props.sh: use the $( ... ) construct... Elia Pinto Tue, 12 Jan 2016 10:45:10 +0000 (10:45 +0000)

t9101-git-svn-props.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t9100-git-svn-basic.sh: use the $( ... ) construct... Elia Pinto Tue, 12 Jan 2016 10:45:09 +0000 (10:45 +0000)

t9100-git-svn-basic.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

checkout,clone: check return value of create_symrefJeff King Tue, 12 Jan 2016 09:57:34 +0000 (04:57 -0500)

checkout,clone: check return value of create_symref

It's unlikely that we would fail to create or update a
symbolic ref (especially HEAD), but if we do, we should
notice and complain. Note that there's no need to give more
details in our error message; create_symref will already
have done so.

While we're here, let's also fix a minor memory leak in
clone.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/grep: add grep.fallbackToNoIndex configThomas Gummerer Tue, 12 Jan 2016 10:40:26 +0000 (11:40 +0100)

builtin/grep: add grep.fallbackToNoIndex config

Currently when git grep is used outside of a git repository without the
--no-index option git simply dies. For convenience, add a
grep.fallbackToNoIndex configuration variable. If set to true, git grep
behaves like git grep --no-index if it is run outside of a git
repository. It defaults to false, preserving the current behavior.

Helped-by: Jeff King <peff@peff.net>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Handle more file writes correctly in shared reposJohannes Schindelin Mon, 11 Jan 2016 18:35:54 +0000 (19:35 +0100)

Handle more file writes correctly in shared repos

In shared repositories, we have to be careful when writing files whose
permissions do not allow users other than the owner to write them.

In particular, we force the marks file of fast-export and the FETCH_HEAD
when fetching to be rewritten from scratch.

This commit does not touch other calls to fopen() that want to
write files:

- commands that write to working tree files (core.sharedRepository
does not affect permission bits of working tree files),
e.g. .rej file created by "apply --reject", result of applying a
previous conflict resolution by "rerere", "git merge-file".

- git am, when splitting mails (git-am correctly cleans up its directory
after finishing, so there is no need to share those files between users)

- git submodule clone, when writing the .git file, because the file
will not be overwritten

- git_terminal_prompt() in compat/terminal.c, because it is not writing to
a file at all

- git diff --output, because the output file is clearly not intended to be
shared between the users of the current repository

- git fast-import, when writing a crash report, because the reports' file
names are unique due to an embedded process ID

- mailinfo() in mailinfo.c, because the output is clearly not intended to
be shared between the users of the current repository

- check_or_regenerate_marks() in remote-testsvn.c, because this is only
used for Git's internal testing

- git fsck, when writing lost&found blobs (this should probably be
changed, but left as a low-hanging fruit for future contributors).

Note that this patch does not touch callers of write_file() and
write_file_gently(), which would benefit from the same scrutiny as
to usage in shared repositories. Most notable users are branch,
daemon, submodule & worktree, and a worrisome call in transport.c
when updating one ref (which ignores the shared flag).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t7810: correct --no-index testThomas Gummerer Mon, 11 Jan 2016 21:26:19 +0000 (22:26 +0100)

t7810: correct --no-index test

GIT_CEILING_DIRECTORIES doesn't prevent chdir up into another directory
while looking for a repository directory if it is equal to the current
directory. Because of this, the test which claims to test the git grep
--no-index command outside of a repository actually tests it inside of a
repository. The test_must_fail assertions still pass because the git
grep only looks at untracked files and therefore no file matches, but
not because it's run outside of a repository as it was originally
intended.

Set the GIT_CEILING_DIRECTORIES environment variable to the parent
directory of the directory in which the git grep command is executed, to
make sure it is actually run outside of a git repository.

In addition, the && chain was broken in a couple of places in the same
test, fix that.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t9001-send-email.sh: use the $( ... ) construct for... Elia Pinto Mon, 11 Jan 2016 13:34:09 +0000 (14:34 +0100)

t/t9001-send-email.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t8003-blame-corner-cases.sh: use the $( ... ) constru... Elia Pinto Fri, 8 Jan 2016 11:06:26 +0000 (12:06 +0100)

t/t8003-blame-corner-cases.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7700-repack.sh: use the $( ... ) construct for comma... Elia Pinto Fri, 8 Jan 2016 11:06:25 +0000 (12:06 +0100)

t/t7700-repack.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7602-merge-octopus-many.sh: use the $( ... ) constru... Elia Pinto Fri, 8 Jan 2016 11:06:24 +0000 (12:06 +0100)

t/t7602-merge-octopus-many.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7505-prepare-commit-msg-hook.sh: use the $( ...... Elia Pinto Fri, 8 Jan 2016 11:06:23 +0000 (12:06 +0100)

t/t7505-prepare-commit-msg-hook.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7504-commit-msg-hook.sh: use the $( ... ) construct... Elia Pinto Fri, 8 Jan 2016 11:06:22 +0000 (12:06 +0100)

t/t7504-commit-msg-hook.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7408-submodule-reference.sh: use the $( ... ) constr... Elia Pinto Fri, 8 Jan 2016 11:06:21 +0000 (12:06 +0100)

t/t7408-submodule-reference.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7406-submodule-update.sh: use the $( ... ) construct... Elia Pinto Fri, 8 Jan 2016 11:06:20 +0000 (12:06 +0100)

t/t7406-submodule-update.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7103-reset-bare.sh: use the $( ... ) construct for... Elia Pinto Fri, 8 Jan 2016 11:06:19 +0000 (12:06 +0100)

t/t7103-reset-bare.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

docs: clarify that --depth for git-fetch works with... Sebastian Schuberth Fri, 8 Jan 2016 09:32:52 +0000 (10:32 +0100)

docs: clarify that --depth for git-fetch works with newly initialized repos

The original wording sounded as if --depth could only be used to deepen or
shorten the history of existing repos. However, that is not the case. In a
workflow like

$ git init
$ git remote add origin https://github.com/git/git.git
$ git fetch --depth=1

The newly initialized repo is properly created as a shallow repo.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

docs: say "commits" in the --depth option wording for... Sebastian Schuberth Fri, 8 Jan 2016 09:18:21 +0000 (10:18 +0100)

docs: say "commits" in the --depth option wording for git-clone

It is not wrong to talk about "revisions" here, but in this context
revisions are always commits, and that is how we already name it in the
git-fetch docs. So align the docs by always referring to "commits".

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Revert "dir.c: don't exclude whole dir prematurely... Nguyễn Thái Ngọc Duy Fri, 8 Jan 2016 12:05:25 +0000 (19:05 +0700)

Revert "dir.c: don't exclude whole dir prematurely if neg pattern may match"

This reverts commit 57534ee77d22e725d971ee89c77dc6aad61c573f. The
feature added in that commit requires that patterns behave the same way
from anywhere. But some patterns can behave differently depending on
current "working" directory. The conditions to catch and avoid these
patterns are too loose. The untracked listing[1] and sparse-checkout
selection[2] can become incorrect as a result.

[1] http://article.gmane.org/gmane.comp.version-control.git/283520
[2] http://article.gmane.org/gmane.comp.version-control.git/283532

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7006-pager.sh: use the $( ... ) construct for comman... Elia Pinto Thu, 7 Jan 2016 13:51:50 +0000 (14:51 +0100)

t/t7006-pager.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7004-tag.sh: use the $( ... ) construct for command... Elia Pinto Thu, 7 Jan 2016 13:51:49 +0000 (14:51 +0100)

t/t7004-tag.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7003-filter-branch.sh: use the $( ... ) construct... Elia Pinto Thu, 7 Jan 2016 13:51:48 +0000 (14:51 +0100)

t/t7003-filter-branch.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7001-mv.sh: use the $( ... ) construct for command... Elia Pinto Thu, 7 Jan 2016 13:51:47 +0000 (14:51 +0100)

t/t7001-mv.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t6132-pathspec-exclude.sh: use the $( ... ) construct... Elia Pinto Thu, 7 Jan 2016 13:51:46 +0000 (14:51 +0100)

t/t6132-pathspec-exclude.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t6032-merge-large-rename.sh: use the $( ... ) constru... Elia Pinto Thu, 7 Jan 2016 13:51:45 +0000 (14:51 +0100)

t/t6032-merge-large-rename.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t6015-rev-list-show-all-parents.sh: use the $( .... Elia Pinto Thu, 7 Jan 2016 13:51:44 +0000 (14:51 +0100)

t/t6015-rev-list-show-all-parents.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t6002-rev-list-bisect.sh: use the $( ... ) construct... Elia Pinto Thu, 7 Jan 2016 13:51:43 +0000 (14:51 +0100)

t/t6002-rev-list-bisect.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t6001-rev-list-graft.sh: use the $( ... ) construct... Elia Pinto Thu, 7 Jan 2016 13:51:42 +0000 (14:51 +0100)

t/t6001-rev-list-graft.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5900-repo-selection.sh: use the $( ... ) construct... Elia Pinto Thu, 7 Jan 2016 13:51:41 +0000 (14:51 +0100)

t/t5900-repo-selection.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.

The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done

and then carefully proof-read.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

commit: allow editing the commit message even in shared... Johannes Schindelin Wed, 6 Jan 2016 13:09:43 +0000 (14:09 +0100)

commit: allow editing the commit message even in shared repos

It was pointed out by Yaroslav Halchenko that the file containing the
commit message is writable only by the owner, which means that we have
to rewrite it from scratch in a shared repository.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

docs: clarify that passing --depth to git-clone implies... Sebastian Schuberth Wed, 6 Jan 2016 13:06:47 +0000 (14:06 +0100)

docs: clarify that passing --depth to git-clone implies --single-branch

It is confusing to document how --depth behaves as part of the
--single-branch docs. Better move that part to the --depth docs, saying
that it implies --single-branch by default.

Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Expand documentation describing --signoffDavid A. Wheeler Tue, 5 Jan 2016 19:20:26 +0000 (14:20 -0500)

Expand documentation describing --signoff

Modify various document (man page) files to explain
in more detail what --signoff means.

This was inspired by https://lwn.net/Articles/669976/ where
paulj noted, "adding [the] '-s' argument to [a] git commit
doesn't really mean you have even heard of the DCO...".
Extending git's documentation will make it easier to argue
that developers understood --signoff when they use it.

Signed-off-by: David A. Wheeler <dwheeler@dwheeler.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>