Commit graph

42028 commits

Author SHA1 Message Date
Junio C Hamano 18814d0e2d remote.c: read $GIT_DIR/remotes/* with strbuf_getline()
These files can be edited with a DOS editor, leaving CR at the end
of the line if read with strbuf_getline().

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:34:42 -08:00
Junio C Hamano 1f3b1efd18 ident.c: read /etc/mailname with strbuf_getline()
Just in case /etc/mailname file was edited with a DOS editor,
read it with strbuf_getline() so that a stray CR is not included
as the last character of the mail hostname.

We _might_ want to more aggressively discard whitespace characters
around the line with strbuf_trim(), but that is a bit outside the
scope of this series.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:34:41 -08:00
Junio C Hamano 72e37b6ac8 rev-parse: read parseopt spec with strbuf_getline()
"rev-parse --parseopt" specification is clearly text and we
should anticipate that we may be fed CRLF lines.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:34:41 -08:00
Junio C Hamano 6e8d46f9d4 revision: read --stdin with strbuf_getline()
Reading with getwholeline() and manually stripping the terminating
'\n' would leave CR at the end of the line if the input comes from
a DOS editor.

Constrasting this with the other changes around "--stdin" in this
series, one may realize that the way "log" family of commands read
the paths with "--stdin" looks inconsistent and sloppy.  It does not
allow us to C-quote a textual input, neither does it accept records
that are NUL-terminated.  These are unfortunately way too late to
fix X-<.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:33:28 -08:00
Junio C Hamano c0353c78e8 hash-object: read --stdin-paths with strbuf_getline()
The list of paths could have been written with a DOS editor.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:24:34 -08:00
Junio C Hamano 1a0c8dfd89 strbuf: give strbuf_getline() to the "most text friendly" variant
Now there is no direct caller to strbuf_getline(), we can demote it
to file-scope static that is private to strbuf.c and rename it to
strbuf_getdelim().  Rename strbuf_getline_crlf(), which is designed
to be the most "text friendly" variant, and allow it to take over
this simplest name, strbuf_getline(), so we can add more uses of it
without having to type _crlf over and over again in the coming
steps.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:23:57 -08:00
Junio C Hamano a392f57daf checkout-index: there are only two possible line terminations
The program by default reads LF terminated lines, with an option to
use NUL terminated records.  Instead of pretending that there can be
other useful values for line_termination, use a boolean variable,
nul_term_line, to tell if NUL terminated records are used, and
switch between strbuf_getline_{lf,nul} based on it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:12:58 -08:00
Junio C Hamano 7e07ed8418 update-index: there are only two possible line terminations
The program by default reads LF terminated lines, with an option to
use NUL terminated records.  Instead of pretending that there can be
other useful values for line_termination, use a boolean variable,
nul_term_line, to tell if NUL terminated records are used, and
switch between strbuf_getline_{lf,nul} based on it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:12:58 -08:00
Junio C Hamano dca90031fb check-ignore: there are only two possible line terminations
The program by default reads LF terminated lines, with an option to
use NUL terminated records.  Instead of pretending that there can be
other useful values for line_termination, use a boolean variable,
nul_term_line, to tell if NUL terminated records are used, and
switch between strbuf_getline_{lf,nul} based on it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:12:58 -08:00
Junio C Hamano f418afa98a check-attr: there are only two possible line terminations
The program by default reads LF terminated lines, with an option to
use NUL terminated records.  Instead of pretending that there can be
other useful values for line_termination, use a boolean variable,
nul_term_line, to tell if NUL terminated records are used, and
switch between strbuf_getline_{lf,nul} based on it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:12:58 -08:00
Junio C Hamano b4df87b8ca mktree: there are only two possible line terminations
The program by default reads LF terminated lines, with an option to
use NUL terminated records.  Instead of pretending that there can be
other useful values for line_termination, use a boolean variable,
nul_term_line, to tell if NUL terminated records are used, and
switch between strbuf_getline_{lf,nul} based on it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:12:58 -08:00
Junio C Hamano 8f309aeb82 strbuf: introduce strbuf_getline_{lf,nul}()
The strbuf_getline() interface allows a byte other than LF or NUL as
the line terminator, but this is only because I wrote these
codepaths anticipating that there might be a value other than NUL
and LF that could be useful when I introduced line_termination long
time ago.  No useful caller that uses other value has emerged.

By now, it is clear that the interface is overly broad without a
good reason.  Many codepaths have hardcoded preference to read
either LF terminated or NUL terminated records from their input, and
then call strbuf_getline() with LF or NUL as the third parameter.

This step introduces two thin wrappers around strbuf_getline(),
namely, strbuf_getline_lf() and strbuf_getline_nul(), and
mechanically rewrites these call sites to call either one of
them.  The changes contained in this patch are:

 * introduction of these two functions in strbuf.[ch]

 * mechanical conversion of all callers to strbuf_getline() with
   either '\n' or '\0' as the third parameter to instead call the
   respective thin wrapper.

After this step, output from "git grep 'strbuf_getline('" would
become a lot smaller.  An interim goal of this series is to make
this an empty set, so that we can have strbuf_getline_crlf() take
over the shorter name strbuf_getline().

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 10:12:51 -08:00
Johannes Schindelin 371471cea3 t0060: loosen overly strict expectations
The dirname() tests file were developed and tested on only the five
platforms available to the developer at the time, namely: Linux (both 32
and 64bit), Windows XP 32-bit (MSVC), MinGW 32-bit and Cygwin 32-bit.

http://pubs.opengroup.org/onlinepubs/9699919799/functions/basename.html
(i.e. the POSIX spec) says, in part:

	If the string pointed to by path consists entirely of the '/'
	character, basename() shall return a pointer to the string "/".
	If the string pointed to by path is exactly "//", it is
	implementation-defined whether "/" or "//" is returned.

The thinking behind testing precise, OS-dependent output values was to
document that different setups produce different values. However, as the
test failures on MacOSX illustrated eloquently: hardcoding pretty much each
and every setup's expectations is pretty fragile.

This is not limited to the "//" vs "/" case, of course, other inputs are
also allowed to produce multiple outputs by the POSIX specs.

So let's just test for all allowed values and be done with it. This still
documents that Git cannot rely on one particular output value in those
cases, so the intention of the original tests is still met.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-15 09:26:20 -08:00
Junio C Hamano c8aa9fdf5d strbuf: make strbuf_getline_crlf() global
Often we read "text" files that are supplied by the end user
(e.g. commit log message that was edited with $GIT_EDITOR upon 'git
commit -e'), and in some environments lines in a text file are
terminated with CRLF.  Existing strbuf_getline() knows to read a
single line and then strip the terminating byte from the result, but
it is handy to have a version that is more tailored for a "text"
input that takes both '\n' and '\r\n' as line terminator (aka
<newline> in POSIX lingo) and returns the body of the line after
stripping <newline>.

Recently reimplemented "git am" uses such a function implemented
privately; move it to strbuf.[ch] and make it available for others.

Note that we do not blindly replace calls to strbuf_getline() that
uses LF as the line terminator with calls to strbuf_getline_crlf()
and this is very much deliberate.  Some callers may want to treat an
incoming line that ends with CR (and terminated with LF) to have a
payload that includes the final CR, and such a blind replacement
will result in misconversion when done without code audit.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-14 15:05:55 -08:00
Junio C Hamano dce80bd18c strbuf: miniscule style fix
We write one SP on each side of an operator, even inside an [] pair
that computes the array index.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-14 15:05:55 -08:00
Tobias Klauser e1f898639e interpret-trailers: add option for in-place editing
Add a command line option --in-place to support in-place editing akin to
sed -i.  This allows to write commands like the following:

  git interpret-trailers --trailer "X: Y" a.txt > b.txt && mv b.txt a.txt

in a more concise way:

  git interpret-trailers --trailer "X: Y" --in-place a.txt

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-14 12:22:17 -08:00
Tobias Klauser d0d2344ad8 trailer: allow to write to files other than stdout
Use fprintf instead of printf in trailer.c in order to allow printing
to a file other than stdout. This will be needed to support in-place
editing in git interpret-trailers.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-14 12:22:10 -08:00
Johannes Schindelin 466931d9e1 compat/winansi: support compiling with MSys2
MSys2 already defines the _CONSOLE_FONT_INFOEX structure.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-14 12:21:00 -08:00
Johannes Schindelin 3ecd153a3b compat/mingw: support MSys2-based MinGW build
The excellent MSys2 project brings a substantially updated MinGW
environment including newer GCC versions and new headers. To support
compiling Git, let's special-case the new MinGW (tell-tale: the
_MINGW64_VERSION_MAJOR constant is defined).

Note: this commit only addresses compile failures, not compile warnings
(that task is left for a future patch).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-14 12:20:54 -08:00
Johannes Schindelin 9e2af084d4 nedmalloc: allow compiling with MSys2's compiler
With MSys2's GCC, `ReadWriteBarrier` is already defined, and FORCEINLINE
unfortunately gets defined incorrectly.

Let's work around both problems, using the MSys2-specific
__MINGW64_VERSION_MAJOR constant to guard the FORCEINLINE definition so
as not to affect other platforms.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-14 12:20:33 -08:00
Johannes Schindelin 17c4ddbbaf completion: add missing branch.*.rebase values
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-13 13:00:48 -08:00
Johannes Schindelin b5496d484d 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>
2016-01-13 13:00:01 -08:00
Johannes Schindelin f5eb87b98d 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>
2016-01-13 12:59:15 -08:00
Jeff King 8c24f5b022 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>
2016-01-13 12:04:53 -08:00
Johannes Schindelin d5621020c1 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>
2016-01-13 11:36:28 -08:00
Johannes Schindelin dcacb1b2ee 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>
2016-01-13 11:36:28 -08:00
Johannes Schindelin df617b529e 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>
2016-01-13 11:36:28 -08:00
Johannes Schindelin 0898c96281 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>
2016-01-13 11:36:27 -08:00
Johannes Schindelin 7b40ae86a3 config.mak.uname: supporting 64-bit MSys2
This just makes things compile, the test suite needs extra tender loving
care in addition to this change. We will address these issues in later
commits.

While at it, also allow building MSys2 Git (i.e. a Git that uses MSys2's
POSIX emulation layer).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-13 11:26:35 -08:00
Johannes Schindelin df5218b4c3 config.mak.uname: support MSys2
For a long time, Git for Windows lagged behind Git's 2.x releases because
the Git for Windows developers wanted to let that big jump coincide with
a well-needed jump away from MSys to MSys2.

To understand why this is such a big issue, it needs to be noted that
many parts of Git are not written in portable C, but instead Git relies
on a POSIX shell and Perl to be available.

To support the scripts, Git for Windows has to ship a minimal POSIX
emulation layer with Bash and Perl thrown in, and when the Git for
Windows effort started in August 2007, this developer settled on using
MSys, a stripped down version of Cygwin. Consequently, the original name
of the project was "msysGit" (which, sadly, caused a *lot* of confusion
because few Windows users know about MSys, and even less care).

To compile the C code of Git for Windows, MSys was used, too: it sports
two versions of the GNU C Compiler: one that links implicitly to the
POSIX emulation layer, and another one that targets the plain Win32 API
(with a few convenience functions thrown in).  Git for Windows'
executables are built using the latter, and therefore they are really
just Win32 programs. To discern executables requiring the POSIX
emulation layer from the ones that do not, the latter are called MinGW
(Minimal GNU for Windows) when the former are called MSys executables.

This reliance on MSys incurred challenges, too, though: some of our
changes to the MSys runtime -- necessary to support Git for Windows
better -- were not accepted upstream, so we had to maintain our own
fork. Also, the MSys runtime was not developed further to support e.g.
UTF-8 or 64-bit, and apart from lacking a package management system
until much later (when mingw-get was introduced), many packages provided
by the MSys/MinGW project lag behind the respective source code
versions, in particular Bash and OpenSSL. For a while, the Git for
Windows project tried to remedy the situation by trying to build newer
versions of those packages, but the situation quickly became untenable,
especially with problems like the Heartbleed bug requiring swift action
that has nothing to do with developing Git for Windows further.

Happily, in the meantime the MSys2 project (https://msys2.github.io/)
emerged, and was chosen to be the base of the Git for Windows 2.x. Just
like MSys, MSys2 is a stripped down version of Cygwin, but it is
actively kept up-to-date with Cygwin's source code.  Thereby, it already
supports Unicode internally, and it also offers the 64-bit support that
we yearned for since the beginning of the Git for Windows project.

MSys2 also ported the Pacman package management system from Arch Linux
and uses it heavily. This brings the same convenience to which Linux
users are used to from `yum` or `apt-get`, and to which MacOSX users are
used to from Homebrew or MacPorts, or BSD users from the Ports system,
to MSys2: a simple `pacman -Syu` will update all installed packages to
the newest versions currently available.

MSys2 is also *very* active, typically providing package updates
multiple times per week.

It still required a two-month effort to bring everything to a state
where Git's test suite passes, many more months until the first official
Git for Windows 2.x was released, and a couple of patches still await
their submission to the respective upstream projects. Yet without MSys2,
the modernization of Git for Windows would simply not have happened.

This commit lays the ground work to supporting MSys2-based Git builds.

Assisted-by: Waldek Maleska <weakcamel@users.github.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-13 11:26:24 -08:00
Alexander Kuleshov bc6bf2d764 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>
2016-01-13 10:55:01 -08:00
Romain Picard a02b8bc4d7 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>
2016-01-13 09:06:54 -08:00
Jeff King 2859dcd4c8 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>
2016-01-13 09:05:42 -08:00
Jeff King 6294dcb49f 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>
2016-01-13 09:05:30 -08:00
Junio C Hamano fc10eb5b87 Sync with maint
* maint:
  l10n: ko.po: Add Korean translation
2016-01-12 15:21:00 -08:00
Junio C Hamano c9906e47c0 First batch for post 2.7 cycle
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-12 15:20:51 -08:00
Junio C Hamano bdd1cc2092 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
2016-01-12 15:16:55 -08:00
Junio C Hamano 72d25911eb 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
2016-01-12 15:16:54 -08:00
Junio C Hamano 187c0d3d9e 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
2016-01-12 15:16:54 -08:00
Junio C Hamano 7b9d1b9556 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
2016-01-12 15:16:54 -08:00
Junio C Hamano ce7da1d281 Merge branch 'ep/make-phoney'
A slight update to the Makefile.

* ep/make-phoney:
  Makefile: add missing phony target
2016-01-12 15:16:53 -08:00
Junio C Hamano d82d093456 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"
2016-01-12 15:16:53 -08:00
Mike Hommey ee76f92fe8 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>
2016-01-12 15:10:01 -08:00
Junio C Hamano 1b0b6dd072 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
2016-01-12 15:05:05 -08:00
Øyvind A. Holm a9eb90aab5 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>
2016-01-12 13:21:15 -08:00
Elia Pinto ec1b763d05 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>
2016-01-12 11:49:49 -08:00
Elia Pinto 9c1037751c 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>
2016-01-12 11:49:48 -08:00
Elia Pinto c7b793a17d 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>
2016-01-12 11:49:48 -08:00
Elia Pinto 80a6b3f0d5 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>
2016-01-12 11:49:48 -08:00
Elia Pinto 9375dcf3b9 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>
2016-01-12 11:49:47 -08:00