gitweb.git
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>

reflog-walk: don't segfault on non-commit sha1's in... Dennis Kaarsemaker Tue, 5 Jan 2016 21:12:10 +0000 (22:12 +0100)

reflog-walk: don't segfault on non-commit sha1's in the reflog

git reflog (ab)uses the log machinery to display its list of log
entries. To do so it must fake commit parent information for the log
walker.

For refs in refs/heads this is no problem, as they should only ever
point to commits. Tags and other refs however can point to anything,
thus their reflog may contain non-commit objects.

To avoid segfaulting, we check whether reflog entries are commits before
feeding them to the log walker and skip any non-commits. This means that
git reflog output will be incomplete for such refs, but that's one step
up from segfaulting. A more complete solution would be to decouple git
reflog from the log walker machinery.

Signed-off-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
Helped-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t6050-replace: make failing editor test more robustSZEDER Gábor Tue, 5 Jan 2016 10:33:30 +0000 (11:33 +0100)

t6050-replace: make failing editor test more robust

'git replace --edit' should error out when the invoked editor fails,
but the test checking this behavior would not notice if this weren't
the case.

The test in question, ever since it was added in 85f98fc037ae
(replace: add tests for --edit, 2014-05-17), has simulated a failing
editor in an unconventional way:

test_must_fail env GIT_EDITOR='./fakeeditor;false' git replace --edit

I presume the reason for this unconventional editor was the fact that
'git replace --edit' requires the edited object to be different from
the original, but a mere 'false' as editor would leave the object
unchanged and 'git replace --edit' would error out anyway complaining
about the new and the original object files being the same. Running
'fakeeditor' before 'false' was supposed to ensure that the object
file is modified and thus 'git replace --edit' errors out because of
the failed editor.

However, this editor doesn't actually modify the edited object,
because start_command() turns this editor into:

/bin/sh -c './fakeeditor;false "$@"' './fakeeditor;false' \
'.../.git/REPLACE_EDITOBJ'

This means that the test's fakeeditor script doesn't even get the path
of the object to be edited as argument, triggering error messages from
the commands executed inside the script ('sed' and 'mv'), and
ultimately leaving the object file unchanged.

If a patch were to remove the die() from the error path after
launch_editor(), the test would not catch it, because 'git replace'
would continue execution past launch_editor() and would error out a
bit later due to the unchanged edited object. Though 'git replace'
would error out for the wrong reason, this would satisfy
'test_must_fail' just as well, and the test would succeed leaving the
undesired change unnoticed.

Create a proper failing fake editor script for this test to ensure
that the edited object is in fact modified and 'git replace --edit'
won't error out because the new and original object files are the
same.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

for-each-ref: document `creatordate` and `creator`... Eric Wong Tue, 5 Jan 2016 03:51:57 +0000 (03:51 +0000)

for-each-ref: document `creatordate` and `creator` fields

These were introduced back in 2006 at 3175aa1ec28c but
never documented.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Git 2.7 v2.7.0Junio C Hamano Mon, 4 Jan 2016 22:08:04 +0000 (14:08 -0800)

Git 2.7

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

Sync with 2.6.5Junio C Hamano Mon, 4 Jan 2016 22:06:59 +0000 (14:06 -0800)

Sync with 2.6.5

Git 2.6.5 v2.6.5Junio C Hamano Mon, 4 Jan 2016 22:06:00 +0000 (14:06 -0800)

Git 2.6.5

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

Merge branch 'jk/pending-keep-tag-name' into maintJunio C Hamano Mon, 4 Jan 2016 22:03:07 +0000 (14:03 -0800)

Merge branch 'jk/pending-keep-tag-name' into maint

History traversal with "git log --source" that starts with an
annotated tag failed to report the tag as "source", due to an
old regression in the command line parser back in v2.2 days.

* jk/pending-keep-tag-name:
revision.c: propagate tag names from pending array

Merge branch 'jk/symbolic-ref-maint' into maintJunio C Hamano Mon, 4 Jan 2016 22:02:58 +0000 (14:02 -0800)

Merge branch 'jk/symbolic-ref-maint' into maint

"git symbolic-ref" forgot to report a failure with its exit status.

* jk/symbolic-ref-maint:
t1401: test reflog creation for git-symbolic-ref
symbolic-ref: propagate error code from create_symref()

Merge branch 'jk/ident-loosen-getpwuid' into maintJunio C Hamano Mon, 4 Jan 2016 22:02:57 +0000 (14:02 -0800)

Merge branch 'jk/ident-loosen-getpwuid' into maint

When getpwuid() on the system returned NULL (e.g. the user is not
in the /etc/passwd file or other uid-to-name mappings), the
codepath to find who the user is to record it in the reflog barfed
and died. Loosen the check in this codepath, which already accepts
questionable ident string (e.g. host part of the e-mail address is
obviously bogus), and in general when we operate fmt_ident() function
in non-strict mode.

* jk/ident-loosen-getpwuid:
ident: loosen getpwuid error in non-strict mode
ident: keep a flag for bogus default_email
ident: make xgetpwuid_self() a static local helper

Merge branch 'jk/send-email-ssl-errors' into maintJunio C Hamano Mon, 4 Jan 2016 22:02:55 +0000 (14:02 -0800)

Merge branch 'jk/send-email-ssl-errors' into maint

Improve error reporting when SMTP TLS fails.

* jk/send-email-ssl-errors:
send-email: enable SSL level 1 debug output

Merge branch 'sg/completion-no-column' into maintJunio C Hamano Mon, 4 Jan 2016 22:02:45 +0000 (14:02 -0800)

Merge branch 'sg/completion-no-column' into maint

The completion script (in contrib/) used to list "git column"
(which is not an end-user facing command) as one of the choices

* sg/completion-no-column:
completion: remove 'git column' from porcelain commands

t/t5710-info-alternate.sh: use the $( ... ) construct... Elia Pinto Mon, 4 Jan 2016 09:10:51 +0000 (10:10 +0100)

t/t5710-info-alternate.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/t5700-clone-reference.sh: use the $( ... ) construct... Elia Pinto Mon, 4 Jan 2016 09:10:50 +0000 (10:10 +0100)

t/t5700-clone-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/t5601-clone.sh: use the $( ... ) construct for comman... Elia Pinto Mon, 4 Jan 2016 09:10:49 +0000 (10:10 +0100)

t/t5601-clone.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/t5570-git-daemon.sh: use the $( ... ) construct for... Elia Pinto Mon, 4 Jan 2016 09:10:48 +0000 (10:10 +0100)

t/t5570-git-daemon.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/t5550-http-fetch-dumb.sh: use the $( ... ) construct... Elia Pinto Mon, 4 Jan 2016 09:10:47 +0000 (10:10 +0100)

t/t5550-http-fetch-dumb.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/t5538-push-shallow.sh: use the $( ... ) construct... Elia Pinto Mon, 4 Jan 2016 09:10:46 +0000 (10:10 +0100)

t/t5538-push-shallow.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/t5537-fetch-shallow.sh: use the $( ... ) construct... Elia Pinto Mon, 4 Jan 2016 09:10:45 +0000 (10:10 +0100)

t/t5537-fetch-shallow.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/t5532-fetch-proxy.sh: use the $( ... ) construct... Elia Pinto Mon, 4 Jan 2016 09:10:44 +0000 (10:10 +0100)

t/t5532-fetch-proxy.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/t5530-upload-pack-error.sh: use the $( ... ) construc... Elia Pinto Mon, 4 Jan 2016 09:10:43 +0000 (10:10 +0100)

t/t5530-upload-pack-error.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/t5522-pull-symlink.sh: use the $( ... ) construct... Elia Pinto Mon, 4 Jan 2016 09:10:42 +0000 (10:10 +0100)

t/t5522-pull-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>

git-send-email: do not double-escape quotes from muttEric Wong Mon, 4 Jan 2016 20:53:30 +0000 (20:53 +0000)

git-send-email: do not double-escape quotes from mutt

mutt saves aliases with escaped quotes in the form of:

alias dot \"Dot U. Sir\" <somebody@example.org>

When we pass through our sanitize_address routine,
we end up with double-escaping:

To: "\\\"Dot U. Sir\\\" <somebody@example.org>

Remove the escaping in mutt only for now, as I am not sure
if other mailers can do this or if this is better fixed in
sanitize_address.

Cc: Remi Lespinet <remi.lespinet@ensimag.grenoble-inp.fr>
Cc: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

bswap: add NO_UNALIGNED_LOADS defineJeff King Tue, 29 Dec 2015 06:36:00 +0000 (01:36 -0500)

bswap: add NO_UNALIGNED_LOADS define

The byte-swapping code automatically decides, based on the
platform, whether it is sensible to cast and do a potentially
unaligned ntohl(), or to pick individual bytes out of an
array.

It can be handy to override this decision, though, when
turning on compiler flags that will complain about unaligned
loads (such as -fsanitize=undefined). This patch adds a
macro check to make this possible.

There's no nice Makefile knob here; this is for prodding at
Git's internals, and anybody using it can set
"-DNO_UNALIGNED_LOADS" in the same place they are setting up
"-fsanitize".

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

avoid shifting signed integers 31 bitsJeff King Tue, 29 Dec 2015 06:35:46 +0000 (01:35 -0500)

avoid shifting signed integers 31 bits

We sometimes use 32-bit unsigned integers as bit-fields.
It's fine to access the MSB, because it's unsigned. However,
doing so as "1 << 31" is wrong, because the constant "1" is
a signed int, and we shift into the sign bit, causing
undefined behavior.

We can fix this by using "1U" as the constant.

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

l10n: ko.po: Add Korean translationChangwoo Ryu Sun, 3 Jan 2016 10:07:29 +0000 (19:07 +0900)

l10n: ko.po: Add Korean translation

Signed-off-by: Changwoo Ryu <cwryu@debian.org>
Signed-off-by: Hyunjun Kim <yoloseem@users.noreply.github.com>

Merge tag 'l10n-2.7.0-rnd2+de' of git://github.com... Junio C Hamano Sat, 2 Jan 2016 19:31:43 +0000 (11:31 -0800)

Merge tag 'l10n-2.7.0-rnd2+de' of git://github.com/git-l10n/git-po

l10n-2.7.0-rnd2+de

* tag 'l10n-2.7.0-rnd2+de' of git://github.com/git-l10n/git-po:
l10n: de.po: translate 68 new messages
l10n: de.po: improve some translations

user-manual: add addition gitweb informationStephen P. Smith Wed, 30 Dec 2015 23:25:20 +0000 (16:25 -0700)

user-manual: add addition gitweb information

Rework the section on gitweb to add information about the cgi script
and the instaweb command.

Signed-off-by: Stephen P. Smith <ischis2@cox.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

user-manual: add section documenting shallow clonesStephen P. Smith Wed, 30 Dec 2015 00:03:50 +0000 (17:03 -0700)

user-manual: add section documenting shallow clones

Signed-off-by: Stephen P. Smith <ischis2@cox.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

glossary: define the term shallow cloneStephen P. Smith Tue, 29 Dec 2015 18:54:35 +0000 (11:54 -0700)

glossary: define the term shallow clone

There are several places in the documentation that
the term shallow clone is used. Defining the term
enables its use elsewhere with a known definition.

Signed-off-by: Stephen P. Smith <ischis2@cox.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

run-command: don't warn on SIGPIPE deathsJeff King Tue, 29 Dec 2015 08:12:22 +0000 (03:12 -0500)

run-command: don't warn on SIGPIPE deaths

When git executes a sub-command, we print a warning if the
command dies due to a signal, but make an exception for
"uninteresting" cases like SIGINT and SIGQUIT (since the
user presumably just hit ^C).

We should make a similar exception for SIGPIPE, because it's
an expected and uninteresting return in most cases; it
generally means the user quit the pager before git had
finished generating all output. This used to be very hard
to trigger in practice, because:

1. We only complain if we see a real SIGPIPE death, not
the shell-induced 141 exit code. This means that
anything we run via the shell does not trigger the
warning, which includes most non-trivial aliases.

2. The common case for SIGPIPE is the user quitting the
pager before git has finished generating all output.
But if the user triggers a pager with "-p", we redirect
the git wrapper's stderr to that pager, too. Since the
pager is dead, it means that the message goes nowhere.

3. You can see it if you run your own pager, like
"git foo | head". But that only happens if "foo" is a
non-builtin (so it doesn't work with "log", for
example).

However, it may become more common after 86d26f2, which
teaches alias to re-exec builtins rather than running them
in the same process. This case doesn't trigger (1), as we
don't need a shell to run a git command. It doesn't trigger
(2), because the pager is not started by the original git,
but by the inner re-exec of git. And it doesn't trigger (3),
because builtins are treated more like non-builtins in this
case.

Given how flaky this message already is (e.g., you cannot
even know whether you will see it, as git optimizes out some
shell invocations behind the scenes based on the contents of
the command!), and that it is unlikely to ever provide
useful information, let's suppress it for all cases of
SIGPIPE.

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

l10n: de.po: translate 68 new messagesRalf Thielow Tue, 22 Dec 2015 17:08:06 +0000 (18:08 +0100)

l10n: de.po: translate 68 new messages

Translate 68 new messages came from git.pot update in
f4f2c8f (l10n: git.pot: v2.7.0 round 1 (66 new, 29 removed)) and
2c0ca05 (l10n: git.pot: v2.7.0 round 2 (2 new, 2 removed)).

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Acked-by: Matthias Rüster <matthias.ruester@gmail.com>

l10n: de.po: improve some translationsRalf Thielow Thu, 29 Oct 2015 21:18:32 +0000 (22:18 +0100)

l10n: de.po: improve some translations

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Acked-by: Phillip Sz <phillip.szelat@gmail.com>

create_symref: write reflog while holding lockJeff King Tue, 29 Dec 2015 05:57:25 +0000 (00:57 -0500)

create_symref: write reflog while holding lock

We generally hold a lock on the matching ref while writing
to its reflog; this prevents two simultaneous writers from
clobbering each other's reflog lines (it does not even have
to be two symref updates; because we don't hold the lock, we
could race with somebody writing to the pointed-to ref via
HEAD, for example).

We can fix this by writing the reflog before we commit the
lockfile. This runs the risk of writing the reflog but
failing the final rename(), but at least we now err on the
same side as the rest of the ref code.

Noticed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

create_symref: use existing ref-lock codeJeff King Tue, 29 Dec 2015 05:57:01 +0000 (00:57 -0500)

create_symref: use existing ref-lock code

The create_symref() function predates the existence of
"struct lock_file", let alone the more recent "struct
ref_lock". Instead, it just does its own manual dot-locking.
Besides being more code, this has a few downsides:

- if git is interrupted while holding the lock, we don't
clean up the lockfile

- we don't do the usual directory/filename conflict check.
So you can sometimes create a symref "refs/heads/foo/bar",
even if "refs/heads/foo" exists (namely, if the refs are
packed and we do not hit the d/f conflict in the
filesystem).

This patch refactors create_symref() to use the "struct
ref_lock" interface, which handles both of these things.
There are a few bonus cleanups that come along with it:

- we leaked ref_path in some error cases

- the symref contents were stored in a fixed-size buffer,
putting an artificial (albeit large) limitation on the
length of the refname. We now write through fprintf, and
handle refnames of any size.

- we called adjust_shared_perm only after the file was
renamed into place, creating a potential race with
readers in a shared repository. The lockfile code now
handles this when creating the lockfile, making it
atomic.

- the legacy prefer_symlink_refs path did not do any
locking at all. Admittedly, it is not atomic from a
reader's perspective (as it unlinks and re-creates the
symlink to overwrite), but at least it cannot conflict
with other writers now.

- the result of this patch is hopefully more readable. It
eliminates three goto labels. Two were for error checking
that is now simplified, and the third was to reach shared
code that has been pulled into its own function.

Signed-off-by: Jeff King <peff@peff.net>
Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

create_symref: modernize variable namesJeff King Tue, 29 Dec 2015 05:56:44 +0000 (00:56 -0500)

create_symref: modernize variable names

Once upon a time, create_symref() was used only to point
HEAD at a branch name, and the variable names reflect that
(e.g., calling the path git_HEAD). However, it is much more
generic these days (and has been for some time). Let's
update the variable names to make it easier to follow:

- `ref_target` is now just `refname`. This is closer to
the `ref` that is already in `cache.h`, but with the
extra twist that "name" makes it clear this is the name
and not a ref struct. Dropping "target" hopefully makes
it clear that we are talking about the symref itself,
not what it points to.

- `git_HEAD` is now `ref_path`; the on-disk path
corresponding to `ref`.

- `refs_heads_master` is now just `target`; i.e., what the
symref points at. This term also matches what is in
the symlink(2) manpage (at least on Linux).

- the buffer to hold the symref file's contents was simply
called `ref`. It's now `buf` (admittedly also generic,
but at least not actively introducing confusion with the
other variable holding the refname).

Signed-off-by: Jeff King <peff@peff.net>
Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>