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Ævar Arnfjörð Bjarmason a4a136f56e wildmatch test: indent with tabs, not spaces
Replace the 4-width mixed space & tab indentation in this file with
indentation with tabs as we do in most of the rest of our tests.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-30 14:04:00 -08:00
Patryk Obara 4b33e60201 dir: convert struct sha1_stat to use object_id
Convert the declaration of struct sha1_stat. Adjust all usages of this
struct and replace hash{clr,cmp,cpy} with oid{clr,cmp,cpy} wherever
possible.  Rename it to struct oid_stat.

Rename static function load_sha1_stat to load_oid_stat.

Remove macro EMPTY_BLOB_SHA1_BIN, as it's no longer used.

Signed-off-by: Patryk Obara <patryk.obara@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-30 10:42:36 -08:00
Jeff King ed15e58efe daemon: fix length computation in newline stripping
When git-daemon gets a pktline request, we strip off any
trailing newline, replacing it with a NUL. Clients prior to
5ad312bede (in git v1.4.0) would send:

  git-upload-pack repo.git\n

and we need to strip it off to understand their request.
After 5ad312bede, we send the host attribute but no newline,
like:

  git-upload-pack repo.git\0host=example.com\0

Both of these are parsed correctly by git-daemon. But if
some client were to combine the two:

  git-upload-pack repo.git\n\0host=example.com\0

we don't parse it correctly. The problem is that we use the
"len" variable to record the position of the NUL separator,
but then decrement it when we strip the newline. So we start
with:

  git-upload-pack repo.git\n\0host=example.com\0
                             ^-- len

and end up with:

  git-upload-pack repo.git\0\0host=example.com\0
                           ^-- len

This is arguably correct, since "len" tells us the length of
the initial string, but we don't actually use it for that.
What we do use it for is finding the offset of the extended
attributes; they used to be at len+1, but are now at len+2.

We can solve that by just leaving "len" where it is. We
don't have to care about the length of the shortened string,
since we just treat it like a C string.

No version of Git ever produced such a string, but it seems
like the daemon code meant to handle this case (and it seems
like a reasonable thing for somebody to do in a 3rd-party
implementation).

Reported-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-25 13:50:17 -08:00
Jeff King 4414a15002 t/lib-git-daemon: add network-protocol helpers
All of our git-protocol tests rely on invoking the client
and having it make a request of a server. That gives a nice
real-world test of how the two behave together, but it
doesn't leave any room for testing how a server might react
to _other_ clients.

Let's add a few test helper functions which can be used to
manually conduct a git-protocol conversation with a remote
git-daemon:

  1. To connect to a remote git-daemon, we need something
     like "netcat". But not everybody will have netcat. And
     even if they do, the behavior with respect to
     half-duplex shutdowns is not portable (openbsd netcat
     has "-N", with others you must rely on "-q 1", which is
     racy).

     Here we provide a "fake_nc" that is capable of doing
     a client-side netcat, with sane half-duplex semantics.
     It relies on perl's IO::Socket::INET. That's been in
     the base distribution since 5.6.0, so it's probably
     available everywhere. But just to be on the safe side,
     we'll add a prereq.

  2. To help tests speak and read pktline, this patch adds
     packetize() and depacketize() functions.

I've put fake_nc() into lib-git-daemon.sh, since that's
really the only server where we'd need to use a network
socket.  Whereas the pktline helpers may be of more general
use, so I've added them to test-lib-functions.sh. Programs
like upload-pack speak pktline, but can talk directly over
stdio without a network socket.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-25 13:50:17 -08:00
Jeff King 550fbcad1c daemon: handle NULs in extended attribute string
If we receive a request with extended attributes after the
NUL, we try to write those attributes to the log. We do so
with a "%s" format specifier, which will only show
characters up to the first NUL.

That's enough for printing a "host=" specifier. But since
dfe422d04d (daemon: recognize hidden request arguments,
2017-10-16) we may have another NUL, followed by protocol
parameters, and those are not logged at all.

Let's cut out the attempt to show the whole string, and
instead log when we parse individual attributes. We could
leave the "extended attributes (%d bytes) exist" part of the
log, which in theory could alert us to attributes that fail
to parse. But anything we don't parse as a "host=" parameter
gets blindly added to the "protocol" attribute, so we'd see
it in that part of the log.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-25 13:50:17 -08:00
Jeff King 19136be3f8 daemon: fix off-by-one in logging extended attributes
If receive a request like:

  git-upload-pack /foo.git\0host=localhost

we mark the offset of the NUL byte as "len", and then log
the bytes after the NUL with a "%.*s" placeholder, using
"pktlen - len" as the length, and "line + len + 1" as the
start of the string.

This is off-by-one, since the start of the string skips past
the separating NUL byte, but the adjusted length includes
it. Fortunately this doesn't actually read past the end of
the buffer, since "%.*s" will stop when it hits a NUL. And
regardless of what is in the buffer, packet_read() will
always add an extra NUL terminator for safety.

As an aside, the git.git client sends an extra NUL after a
"host" field, too, so we'd generally hit that one first, not
the one added by packet_read(). You can see this in the test
output which reports 15 bytes, even though the string has
only 14 bytes of visible data. But the point is that even a
client sending unusual data could not get us to read past
the end of the buffer, so this is purely a cosmetic fix.

Reported-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-25 13:50:17 -08:00
Jeff King 314a73d658 t/lib-git-daemon: record daemon log
When we start git-daemon for our tests, we send its stderr
log stream to a named pipe. We synchronously read the first
line to make sure that the daemon started, and then dump the
rest to descriptor 4. This is handy for debugging test
output with "--verbose", but the tests themselves can't
access the log data.

Let's dump the log into a file, as well, so that future
tests can check the log. There are a few subtleties worth
calling out here:

  - we'll continue to send output to descriptor 4 for
    viewing/debugging, which would imply swapping out "cat"
    for "tee". But we want to ensure that there's no
    buffering, and "tee" doesn't have a standard way to
    ask for that. So we'll use a shell loop around "read"
    and "printf" instead. That ensures that after a request
    has been served, the matching log entries will have made
    it to the file.

  - the existing first-line shell loop used read/echo. We'll
    switch to consistently using "read -r" and "printf" to
    relay data as faithfully as possible.

  - we open the logfile for append, rather than just output.
    That makes it OK for tests to truncate the logfile
    without restarting the daemon (the OS will atomically
    seek to the end of the file when outputting each line).
    That allows tests to look at the log without worrying
    about pollution from earlier tests.

Helped-by: Lucas Werkmeister <mail@lucaswerkmeister.de>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-25 13:50:03 -08:00
Jeff King 02adf84ab8 t5570: use ls-remote instead of clone for interp tests
We don't actually care about the clone operation here; we
just want to know if we were able to actually contact the
remote repository. Using ls-remote does that more
efficiently, and without us having to worry about managing
the tmp.git directory.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-25 10:44:51 -08:00
Nguyễn Thái Ngọc Duy b640313110 dir.c: fix missing dir invalidation in untracked code
Let's start with how create a new directory cache after the last one
becomes invalid (e.g. because its dir mtime has changed...). In
open_cached_dir():

1. We start out with valid_cached_dir() returning false, which should
   call invalidate_directory() to put a directory state back to
   initial state, no untracked entries (untracked_nr zero), no sub
   directory traversal (dirs[].recurse zero).

2. Since the cache cannot be used, we go the slow path opendir() and
   go through items one by one via readdir(). All the directories on
   disk will be added back to the cache (if not already exist in
   dirs[]) and its flag "recurse" gets changed to one to note that
   it's part of the cached dir travesal next time.

3. By the time we reach close_cached_dir() we should have a good
   subdir list in dirs[]. Those with "recurse" flag set are the ones
   present in the on-disk directory. The directory is now marked
   "valid".

Next time read_directory() is called, since the directory is marked
valid, it will skip readdir(), go fast path and traverse through
dirs[] array instead.

Steps one and two need some tight cooperation. If a subdir is removed,
readdir() will not find it and of course we cannot examine/invalidate
it. To make sure removed directories on disk are gone from the cache,
step one must make sure recurse flag of all subdirs are zero.

But that's not true. If "valid" flag is already false, there is a
chance we go straight to the end of valid_cached_dir() without calling
invalidate_directory(). Or we fail to meet the "if (untracked-valid)"
condition and skip over the invalidate_directory().

After step 3, we mark the cache valid. Any stale subdir with incorrect
recurse flag becomes a real subdir next time we traverse the directory
using dirs[] array.

We could avoid this by making sure invalidate_directory() is always
called (therefore dirs[].recurse cleared) at the beginning of
open_cached_dir(). Which is what this patch does.

As to how we get into this situation, the key in the test is this
command

    git checkout master

where "one/file" is replaced with "one" in the index. This index
update triggers untracked_cache_invalidate_path(), which clears valid
flag of the root directory while keeping "recurse" flag on the subdir
"one" on. On the next git-status, we go through steps 1-3 above and
save an incorrect cache on disk. The second git-status blindly follows
the bad cache data and shows the problem.

This is arguably because of a bad design where "recurse" flag plays
double roles: whether a directory should be saved on disk, and whether
it is part of a directory traversal.

We need to keep recurse flag set at "checkout master" because of the
first role: we need to keep subdir caches (dir "two" for example has
not been touched at all, no reason to throw its cache away).

As long as we make sure to ignore/reset "recurse" flag at the
beginning of a directory traversal, we're good. But maybe eventually
we should separate these two roles.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-24 12:40:14 -08:00
Ævar Arnfjörð Bjarmason ce0330cad8 status: add a failing test showing a core.untrackedCache bug
The untracked cache gets confused when a directory is swapped out for
a file. It is easiest to reproduce this by swapping out a directory
with a symlink to another directory, and as the tests show the symlink
case is the only case we've found where "git status" will subsequently
report incorrect information, even though it's possible to otherwise
get the untracked cache into a state where its internal data
structures don't reflect reality.

In the symlink case, whatever files are inside the target of the
symlink will be incorrectly shown as untracked. This issue does not
happen if the symlink links to another file, only if it links to
another directory.

A stand-alone testcase for copying into a terminal:

    (
        rm -rf /tmp/testrepo &&
        git init /tmp/testrepo &&
        cd /tmp/testrepo &&
        mkdir x y &&
        touch x/a y/b &&
        git add x/a y/b &&
        git commit -msnap &&
        git rm -rf y &&
        ln -s x y &&
        git add y &&
        git commit -msnap2 &&
        git checkout HEAD~ &&
        git status &&
        git checkout master &&
        sleep 1 &&
        git status &&
        git status
    )

This will incorrectly show y/a as an untracked file. Both the "git
status" call right before "git checkout master" and the "sleep 1"
after the "checkout master" are needed to reproduce this, presumably
due to the untracked cache tracking on the basis of cached whole
seconds from stat(2).

When git gets into this state, a workaround to fix it is to issue a
one-off:

    git -c core.untrackedCache=false status

For the non-symlink case, the bug is that the output of
test-dump-untracked-cache should not include:

   /one/ 0000000000000000000000000000000000000000 recurse valid

It being in the output implies that cached traversal of root includes
the directory "one" which does not exist on disk anymore.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-24 12:40:12 -08:00
Phillip Wood 66618a50f9 sequencer: run 'prepare-commit-msg' hook
Commit 356ee4659b ("sequencer: try to commit without forking 'git
commit'", 2017-11-24) forgot to run the 'prepare-commit-msg' hook when
creating the commit. Fix this by writing the commit message to a
different file and running the hook. Using a different file means that
if the commit is cancelled the original message file is
unchanged. Also move the checks for an empty commit so the order
matches 'git commit'.

Reported-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-24 11:01:31 -08:00
Phillip Wood 15cd6d3a25 t7505: add tests for cherry-pick and rebase -i/-p
Check that cherry-pick and rebase call the 'prepare-commit-msg' hook
correctly. The expected values for the hook arguments are taken to
match the current master branch. I think there is scope for improving
the arguments passed so they make a bit more sense - for instance
cherry-pick currently passes different arguments depending on whether
the commit message is being edited. Also the arguments for rebase
could be improved. Commit 7c4188360a ("rebase -i: proper
prepare-commit-msg hook argument when squashing", 2008-10-3) apparently
changed things so that when squashing rebase would pass 'squash' as
the argument to the hook but that has been lost.

I think that it would make more sense to pass 'message' for revert and
cherry-pick -x/-s (i.e. cases where there is a new message or the
current message in modified by the command), 'squash' when squashing
with a new message and 'commit HEAD/CHERRY_PICK_HEAD'
otherwise (picking and squashing without a new message).

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-24 11:01:15 -08:00
Phillip Wood 4f8cbf2b46 t7505: style fixes
Fix the indentation and style of the hook script in preparation for
further changes.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-24 11:00:16 -08:00
Nguyễn Thái Ngọc Duy ef5b3a6c5e read-cache: don't write index twice if we can't write shared index
In a0a967568e ("update-index --split-index: do not split if $GIT_DIR is
read only", 2014-06-13), we tried to make sure we can still write an
index, even if the shared index can not be written.

We did so by just calling 'do_write_locked_index()' just before
'write_shared_index()'.  'do_write_locked_index()' always at least
closes the tempfile nowadays, and used to close or commit the lockfile
if COMMIT_LOCK or CLOSE_LOCK were given at the time this feature was
introduced.  COMMIT_LOCK or CLOSE_LOCK is passed in by most callers of
'write_locked_index()'.

After calling 'write_shared_index()', we call 'write_split_index()',
which calls 'do_write_locked_index()' again, which then tries to use the
closed lockfile again, but in fact fails to do so as it's already
closed. This eventually leads to a segfault.

Make sure to write the main index only once.

[nd: most of the commit message and investigation done by Thomas, I only
tweaked the solution a bit]

Helped-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-24 10:09:18 -08:00
Junio C Hamano e7e80778e7 Merge branch 'nd/add-i-ignore-submodules'
"git add -p" was taught to ignore local changes to submodules as
they do not interfere with the partial addition of regular changes
anyway.

* nd/add-i-ignore-submodules:
  add--interactive: ignore submodule changes except HEAD
2018-01-23 13:16:41 -08:00
Junio C Hamano 897de845e6 Merge branch 'mm/send-email-fallback-to-local-mail-address'
Instead of maintaining home-grown email address parsing code, ship
a copy of reasonably recent Mail::Address to be used as a fallback
in 'git send-email' when the platform lacks it.

* mm/send-email-fallback-to-local-mail-address:
  send-email: add test for Linux's get_maintainer.pl
  perl/Git: remove now useless email-address parsing code
  send-email: add and use a local copy of Mail::Address
2018-01-23 13:16:41 -08:00
Junio C Hamano 087d1a8e9c Merge branch 'tg/stash-with-pathspec-fix'
"git stash -- <pathspec>" incorrectly blew away untracked files in
the directory that matched the pathspec, which has been corrected.

* tg/stash-with-pathspec-fix:
  stash: don't delete untracked files that match pathspec
2018-01-23 13:16:39 -08:00
Junio C Hamano f0605836b7 Merge branch 'sb/submodule-update-reset-fix'
When resetting the working tree files recursively, the working tree
of submodules are now also reset to match.

* sb/submodule-update-reset-fix:
  submodule: submodule_move_head omits old argument in forced case
  unpack-trees: oneway_merge to update submodules
  t/lib-submodule-update.sh: fix test ignoring ignored files in submodules
  t/lib-submodule-update.sh: clarify test
2018-01-23 13:16:39 -08:00
Junio C Hamano 5550449812 Merge branch 'ab/commit-m-with-fixup'
"git commit --fixup" did not allow "-m<message>" option to be used
at the same time; allow it to annotate resulting commit with more
text.

* ab/commit-m-with-fixup:
  commit: add support for --fixup <commit> -m"<extra message>"
  commit doc: document that -c, -C, -F and --fixup with -m error
2018-01-23 13:16:38 -08:00
Junio C Hamano 86d7fcc40a Merge branch 'cc/codespeed'
"perf" test output can be sent to codespeed server.

* cc/codespeed:
  perf/run: read GIT_PERF_REPO_NAME from perf.repoName
  perf/run: learn to send output to codespeed server
  perf/run: learn about perf.codespeedOutput
  perf/run: add conf_opts argument to get_var_from_env_or_config()
  perf/aggregate: implement codespeed JSON output
  perf/aggregate: refactor printing results
  perf/aggregate: fix checking ENV{GIT_PERF_SUBSECTION}
2018-01-23 13:16:38 -08:00
Junio C Hamano 59b43c014d Merge branch 'ab/perf-grep-threads'
More perf tests for threaded grep

* ab/perf-grep-threads:
  perf: amend the grep tests to test grep.threads
2018-01-23 13:16:37 -08:00
Junio C Hamano c0d75f0e2e Merge branch 'sb/diff-blobfind-pickaxe'
"diff" family of commands learned "--find-object=<object-id>" option
to limit the findings to changes that involve the named object.

* sb/diff-blobfind-pickaxe:
  diff: use HAS_MULTI_BITS instead of counting bits manually
  diff: properly error out when combining multiple pickaxe options
  diffcore: add a pickaxe option to find a specific blob
  diff: introduce DIFF_PICKAXE_KINDS_MASK
  diff: migrate diff_flags.pickaxe_ignore_case to a pickaxe_opts bit
  diff.h: make pickaxe_opts an unsigned bit field
2018-01-23 13:16:37 -08:00
Junio C Hamano addd37cd64 Merge branch 'jk/abort-clone-with-existing-dest'
"git clone $there $here" is allowed even when here directory exists
as long as it is an empty directory, but the command incorrectly
removed it upon a failure of the operation.

* jk/abort-clone-with-existing-dest:
  clone: do not clean up directories we didn't create
  clone: factor out dir_exists() helper
  t5600: modernize style
  t5600: fix outdated comment about unborn HEAD
2018-01-23 13:16:37 -08:00
Junio C Hamano 14b9d9aa0d Merge branch 'jc/merge-symlink-ours-theirs'
"git merge -Xours/-Xtheirs" learned to use our/their version when
resolving a conflicting updates to a symbolic link.

* jc/merge-symlink-ours-theirs:
  merge: teach -Xours/-Xtheirs to symbolic link merge
2018-01-23 13:16:37 -08:00
Junio C Hamano bc3dca07f4 Merge branch 'nd/ita-wt-renames-in-status'
"git status" after moving a path in the working tree (hence making
it appear "removed") and then adding with the -N option (hence
making that appear "added") detected it as a rename, but did not
report the  old and new pathnames correctly.

* nd/ita-wt-renames-in-status:
  wt-status.c: handle worktree renames
  wt-status.c: rename rename-related fields in wt_status_change_data
  wt-status.c: catch unhandled diff status codes
  wt-status.c: coding style fix
  Use DIFF_DETECT_RENAME for detect_rename assignments
  t2203: test status output with porcelain v2 format
2018-01-23 13:16:28 -08:00
Junio C Hamano fac64e011f Merge branch 'dk/describe-all-output-fix'
An old regression in "git describe --all $annotated_tag^0" has been
fixed.

* dk/describe-all-output-fix:
  describe: prepend "tags/" when describing tags with embedded name
2018-01-23 13:16:28 -08:00
Junio C Hamano ea7b5de1c1 Merge branch 'bc/hash-algo' into maint
* bc/hash-algo:
  t5601-clone: test case-conflicting files on case-insensitive filesystem
  repository: pre-initialize hash algo pointer
2018-01-21 21:12:37 -08:00
Eric Sunshine b6947af229 t5601-clone: test case-conflicting files on case-insensitive filesystem
A recently introduced regression caused a segfault at clone time on
case-insensitive filesystems when filenames differing only in case are
present. This bug has already been fixed (repository: pre-initialize
hash algo pointer, 2018-01-18), but it's not the first time similar
problems have arisen. Therefore, introduce a test to catch this case and
protect against future regressions.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-21 21:12:17 -08:00
Elijah Newren 7c5585ff48 Tighten and correct a few testcases for merging and cherry-picking
t3501 had a testcase originally added in 05f2dfb965 (cherry-pick:
demonstrate a segmentation fault, 2016-11-26) to ensure cherry-pick
wouldn't segfault when working with a dirty file involved in a rename.
While the segfault was fixed, there was another problem this test
demonstrated: namely, that git would overwrite a dirty file involved in a
rename.  Further, the test encoded a "successful merge" and overwriting of
this file as correct behavior.  Modify the test so that it would still
catch the segfault, but to require the correct behavior.  Mark it as
test_expect_failure for now too, since this second bug is not yet fixed.

t7607 had a test added in 30fd3a5425 (merge overwrites unstaged changes in
renamed file, 2012-04-15) specific to looking for a merge overwriting a
dirty file involved in a rename, but it too actually encoded what I would
term incorrect behavior: it expected the merge to succeed.  Fix that, and
add a few more checks to make sure that the merge really does produce the
expected results.

Reviewed-By: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-19 14:44:18 -08:00
Jonathan Tan 8ba18e6fa4 http: support omitting data from traces
GIT_TRACE_CURL provides a way to debug what is being sent and received
over HTTP, with automatic redaction of sensitive information. But it
also logs data transmissions, which significantly increases the log file
size, sometimes unnecessarily. Add an option "GIT_TRACE_CURL_NO_DATA" to
allow the user to omit such data transmissions.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-19 13:06:57 -08:00
Jonathan Tan 83411783c3 http: support cookie redaction when tracing
When using GIT_TRACE_CURL, Git already redacts the "Authorization:" and
"Proxy-Authorization:" HTTP headers. Extend this redaction to a
user-specified list of cookies, specified through the
"GIT_REDACT_COOKIES" environment variable.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-19 13:06:50 -08:00
Nguyễn Thái Ngọc Duy c61a975df1 run-command.c: print env vars in trace_run_command()
Occasionally submodule code could execute new commands with GIT_DIR set
to some submodule. GIT_TRACE prints just the command line which makes it
hard to tell that it's not really executed on this repository.

Print the env delta (compared to parent environment) in this case.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-19 10:49:20 -08:00
Thomas Gummerer 4bddd98311 split-index: don't write cache tree with null oid entries
In a96d3cc3f6 ("cache-tree: reject entries with null sha1", 2017-04-21)
we made sure that broken cache entries do not get propagated to new
trees.  Part of that was making sure not to re-use an existing cache
tree that includes a null oid.

It did so by dropping the cache tree in 'do_write_index()' if one of
the entries contains a null oid.  In split index mode however, there
are two invocations to 'do_write_index()', one for the shared index
and one for the split index.  The cache tree is only written once, to
the split index.

As we only loop through the elements that are effectively being
written by the current invocation, that may not include the entry with
a null oid in the split index (when it is already written to the
shared index), where we write the cache tree.  Therefore in split
index mode we may still end up writing the cache tree, even though
there is an entry with a null oid in the index.

Fix this by checking for null oids in prepare_to_write_split_index,
where we loop the entries of the shared index as well as the entries for
the split index.

This fixes t7009 with GIT_TEST_SPLIT_INDEX.  Also add a new test that's
more specifically showing the problem.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-19 10:36:39 -08:00
Nguyễn Thái Ngọc Duy 12434efc1d add--interactive: ignore submodule changes except HEAD
For 'add -i' and 'add -p', the only action we can take on a dirty
submodule entry is update the index with a new value from its HEAD. The
content changes inside (from its own index, untracked files...) do not
matter, at least until 'git add -i' learns about launching a new
interactive add session inside a submodule.

Ignore all other submodules changes except HEAD. This reduces the number
of entries the user has to check through in 'git add -i', and the number
of 'no' they have to answer to 'git add -p' when dirty submodules are
present.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-16 12:32:45 -08:00
Christian Ludwig ec3b4b06f8 t9001: use existing helper in send-email test
Use the wrapper function around the sed statement like everywhere
else in the test. Unfortunately the wrapper function is defined
pretty late.

Move the wrapper to the top of the test file, so future users have it
available right away.

Signed-off-by: Christian Ludwig <chrissicool@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-12 10:39:20 -08:00
Junio C Hamano 91ec08a078 Merge branch 'js/test-with-ws-in-path'
Hot fix to a test.

* js/test-with-ws-in-path:
  t3900: add some more quotes
2018-01-11 13:16:36 -08:00
Beat Bolli 36a6f49cc3 t3900: add some more quotes
In 89a70b80 ("t0302 & t3900: add forgotten quotes", 2018-01-03), quotes
were added to protect against spaces in $HOME. In the test_when_finished
command, two files are deleted which must be quoted individually.

[jc: with \$HOME in the test_when_finished command quoted, as
pointed out by j6t].

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-10 15:07:26 -08:00
Junio C Hamano fac910641a Merge branch 'js/perl-path-workaround-in-tests'
* js/perl-path-workaround-in-tests:
  mingw: handle GITPERLLIB in t0021 in a Windows-compatible way
2018-01-10 14:01:31 -08:00
Junio C Hamano a466ef018e Merge branch 'ew/empty-merge-with-dirty-index'
"git merge -s recursive" did not correctly abort when the index is
dirty, if the merged tree happened to be the same as the current
HEAD, which has been fixed.

* ew/empty-merge-with-dirty-index:
  merge-recursive: do not look at the index during recursive merge
2018-01-10 14:01:25 -08:00
Junio C Hamano bc4efaf103 Merge branch 'js/fix-merge-arg-quoting-in-rebase-p'
"git rebase -p -X<option>" did not propagate the option properly
down to underlying merge strategy backend.

* js/fix-merge-arg-quoting-in-rebase-p:
  rebase -p: fix quoting when calling `git merge`
2018-01-10 14:01:24 -08:00
Johannes Schindelin 3306f6524d mingw: handle GITPERLLIB in t0021 in a Windows-compatible way
Git's assumption that all path lists are colon-separated is not only
wrong on Windows, it is not even an assumption that is compatible with
POSIX.

In the interest of time, let's not try to fix this properly but simply
work around the obvious breakage on Windows, where the MSYS2 Bash used
by Git for Windows to interpret the Git's Unix shell scripts will
automagically convert path lists in the environment to
semicolon-separated lists of Windows paths (with drive letter and the
corresponding colon and all that jazz).

In other words, we simply look whether there is a semicolon in
GITPERLLIB and split by semicolons if found instead of colons. This is
not fool-proof, of course, as the path list could consist of a single
path. But that is not the case in Git for Windows' test suite, there are
always two paths in GITPERLLIB.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-10 14:00:54 -08:00
Junio C Hamano 4e51984e82 Merge branch 'bw/protocol-v1'
Test fix for a topic already in 'master'.

* bw/protocol-v1:
  http: fix v1 protocol tests with apache httpd < 2.4
2018-01-09 14:32:56 -08:00
Junio C Hamano d702d5c5bd Merge branch 'js/test-with-ws-in-path'
Test fixes.

* js/test-with-ws-in-path:
  t0302 & t3900: add forgotten quotes
  Allow the test suite to pass in a directory whose name contains spaces
2018-01-09 14:32:55 -08:00
Junio C Hamano 5b1c54ac99 Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index
* ew/empty-merge-with-dirty-index-maint:
  merge-recursive: do not look at the index during recursive merge
2018-01-09 10:41:37 -08:00
Junio C Hamano f309e8e768 merge-recursive: do not look at the index during recursive merge
When merging another branch into ours, if their tree is the same as
the common ancestor's, we can declare that our tree represents the
result of three-way merge.  In such a case, the recursive merge
backend incorrectly used to create a commit out of our index, even
when the index has changes.

A recent fix attempted to prevent this by adding a comparison
between "our" tree and the index, but forgot that this check must be
restricted only to the outermost merge.  Inner merges performed by
the recursive backend across merge bases are by definition made from
scratch without having any local changes added to the index.  The
call to index_has_changes() during an inner merge is working on the
index that has no relation to the merge being performed, preventing
legitimate merges from getting carried out.

Fix it by limiting the check to the outermost merge.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-09 10:39:30 -08:00
Thomas Gummerer bba067d2fa stash: don't delete untracked files that match pathspec
Currently when 'git stash push -- <pathspec>' is used, untracked files
that match the pathspec will be deleted, even though they do not end up
in a stash anywhere.

This is because the original commit introducing the pathspec feature in
git stash push (df6bba0937 ("stash: teach 'push' (and 'create_stash') to
honor pathspec", 2017-02-28)) used the sequence of 'git reset <pathspec>
&& git ls-files --modified <pathspec> | git checkout-index && git clean
<pathspec>'.

The intention was to emulate what 'git reset --hard -- <pathspec>' would
do.  The call to 'git clean' was supposed to clean up the files that
were unstaged by 'git reset'.  This would work fine if the pathspec
doesn't match any files that were untracked before 'git stash push --
<pathspec>'.  However if <pathspec> matches a file that was untracked
before invoking the 'stash' command, all untracked files matching the
pathspec would inadvertently be deleted as well, even though they
wouldn't end up in the stash, and are therefore lost.

This behaviour was never what was intended, only blobs that also end up
in the stash should be reset to their state in HEAD, previously
untracked files should be left alone.

To achieve this, first match what's in the index and what's in the
working tree by adding all changes to the index, ask diff-index what
changed between HEAD and the current index, and then apply that patch in
reverse to get rid of the changes, which includes removal of added
files and resurrection of removed files.

Reported-by: Reid Price <reid.price@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-08 13:02:25 -08:00
Alex Bennée d60be8acab send-email: add test for Linux's get_maintainer.pl
We had a regression that broke Linux's get_maintainer.pl. Using
Mail::Address to parse email addresses fixed it, but let's protect
against future regressions.

Note that we need --cc-cmd to be relative because this option doesn't
accept spaces in script names (probably to allow --cc-cmd="executable
--option"), while --smtp-server needs to be absolute.

Patch-edited-by: Matthieu Moy <git@matthieu-moy.fr>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Matthieu Moy <git@matthieu-moy.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-08 10:36:47 -08:00
Matthieu Moy c8f9d13dc6 perl/Git: remove now useless email-address parsing code
We now use Mail::Address unconditionaly, hence parse_mailboxes is now
dead code. Remove it and its tests.

Signed-off-by: Matthieu Moy <git@matthieu-moy.fr>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-08 10:35:38 -08:00
Junio C Hamano bc27a2e2fc Merge branch 'jh/memihash-opt'
Squelch compiler warning.

* jh/memihash-opt:
  t/helper/test-lazy-name-hash: fix compilation
2018-01-05 13:28:11 -08:00
Junio C Hamano e82bbcbf60 Merge branch 'tb/test-lint-wc-l'
Test update.

* tb/test-lint-wc-l:
  check-non-portable-shell.pl: `wc -l` may have leading WS
2018-01-05 13:28:11 -08:00
Junio C Hamano a778ba1c71 Merge branch 'ld/p4-multiple-shelves'
"git p4" update.

* ld/p4-multiple-shelves:
  git-p4: update multiple shelved change lists
2018-01-05 13:28:10 -08:00
Junio C Hamano 843d94b3cd Merge branch 'ew/empty-merge-with-dirty-index'
"git merge -s recursive" did not correctly abort when the index is
dirty, if the merged tree happened to be the same as the current
HEAD, which has been fixed.

* ew/empty-merge-with-dirty-index:
  merge-recursive: avoid incorporating uncommitted changes in a merge
  move index_has_changes() from builtin/am.c to merge.c for reuse
  t6044: recursive can silently incorporate dirty changes in a merge
2018-01-05 13:28:09 -08:00
Junio C Hamano 07b747d324 Merge branch 'jk/test-suite-tracing'
Assorted fixes around running tests with "-x" tracing option.

* jk/test-suite-tracing:
  t/Makefile: introduce TEST_SHELL_PATH
  test-lib: make "-x" work with "--verbose-log"
  t5615: avoid re-using descriptor 4
  test-lib: silence "-x" cleanup under bash
2018-01-05 13:28:09 -08:00
Stefan Beller 7dcc1f4df8 submodule: submodule_move_head omits old argument in forced case
When using hard reset or forced checkout with the option to recurse into
submodules, the submodules need to be reset, too.

It turns out that we need to omit the duplicate old argument to read-tree
in all forced cases to omit the 2 way merge and use the more assertive
behavior of reading the specific new tree into the index and updating
the working tree.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:35:35 -08:00
Stefan Beller 63d963a470 t/lib-submodule-update.sh: fix test ignoring ignored files in submodules
It turns out that the test replacing a submodule with a file with
the submodule containing an ignored file is incorrectly titled,
because the test put the file in place, but never ignored that file.
When having an untracked file Instead of an ignored file in the
submodule, git should refuse to remove the submodule, but that is
a bug in the implementation of recursing into submodules, such that
the test just passed, removing the untracked file.

Fix the test first; in a later patch we'll fix gits behavior,
that will make sure untracked files are not deleted.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:35:35 -08:00
Stefan Beller 6419a12397 t/lib-submodule-update.sh: clarify test
Keep the local branch name as the upstream branch name to avoid confusion.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:35:04 -08:00
Christian Couder 19cf57a92e perf/run: read GIT_PERF_REPO_NAME from perf.repoName
The GIT_PERF_REPO_NAME env variable is used in
the `aggregate.perl` script to set the 'environment'
field in the JSON Codespeed output.

Let's make it easy to set this variable by setting it
in a config file.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:31:08 -08:00
Christian Couder fccec20f0b perf/run: learn to send output to codespeed server
Let's make it possible to set in a config file the URL of
a codespeed server. And then let's make the `run` script
send the perf test results to this URL at the end of the
tests.

This should make is possible to easily automate the process
of running perf tests and having their results available in
Codespeed.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:31:08 -08:00
Christian Couder 5d6bb93090 perf/run: learn about perf.codespeedOutput
Let's make it possible to set in a config file the output
format (regular or codespeed) of the perf tests.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:31:08 -08:00
Christian Couder 3ae7d2b0cd perf/run: add conf_opts argument to get_var_from_env_or_config()
Let's make it possible to use `git config` type specifiers like
`--int` or `--bool`, so that config values are converted to the
canonical form and easier to use.

This additional argument is now the fourth argument of
get_var_from_env_or_config() instead of the fifth because we
want the default value argument to be unset if it is not
passed, and this is simpler if it is the last argument.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:31:07 -08:00
Christian Couder 05eb1c37ed perf/aggregate: implement codespeed JSON output
Codespeed (https://github.com/tobami/codespeed/) is an open source
project that can be used to track how some software performs over
time. It stores performance test results in a database and can show
nice graphs and charts on a web interface.

As it can be interesting to use Codespeed to see how Git performance
evolves over time and releases, let's implement a Codespeed output
in "perf/aggregate.perl".

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:31:07 -08:00
Christian Couder 30ffff6ee2 perf/aggregate: refactor printing results
As we want to implement another kind of output than
the current output for the perf test results, let's
refactor the existing code that outputs the results
in its own print_default_results() function.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:31:07 -08:00
Christian Couder 6f5ecad6a5 perf/aggregate: fix checking ENV{GIT_PERF_SUBSECTION}
The way we check ENV{GIT_PERF_SUBSECTION} could trigger
comparison between undef and "" that may be flagged by
use of strict & warnings. Let's fix that.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:31:07 -08:00
Johannes Schindelin dd6fb0053c rebase -p: fix quoting when calling `git merge`
It has been reported that strategy arguments are not passed to `git
merge` correctly when rebasing interactively, preserving merges.

The reason is that the strategy arguments are already quoted, and then
quoted again.

This fixes https://github.com/git-for-windows/git/issues/1321

Original-patch-by: Kim Gybels <kgybels@infogroep.be>
Also-reported-by: Matwey V. Kornilov <matwey.kornilov@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:26:01 -08:00
Stefan Beller 15af58c1ad diffcore: add a pickaxe option to find a specific blob
Sometimes users are given a hash of an object and they want to
identify it further (ex.: Use verify-pack to find the largest blobs,
but what are these? or [1])

One might be tempted to extend git-describe to also work with blobs,
such that `git describe <blob-id>` gives a description as
'<commit-ish>:<path>'.  This was implemented at [2]; as seen by the sheer
number of responses (>110), it turns out this is tricky to get right.
The hard part to get right is picking the correct 'commit-ish' as that
could be the commit that (re-)introduced the blob or the blob that
removed the blob; the blob could exist in different branches.

Junio hinted at a different approach of solving this problem, which this
patch implements. Teach the diff machinery another flag for restricting
the information to what is shown. For example:

    $ ./git log --oneline --find-object=v2.0.0:Makefile
    b2feb64309 Revert the whole "ask curl-config" topic for now
    47fbfded53 i18n: only extract comments marked with "TRANSLATORS:"

we observe that the Makefile as shipped with 2.0 was appeared in
v1.9.2-471-g47fbfded53 and in v2.0.0-rc1-5-gb2feb6430b.  The
reason why these commits both occur prior to v2.0.0 are evil
merges that are not found using this new mechanism.

[1] https://stackoverflow.com/questions/223678/which-commit-has-this-blob
[2] https://public-inbox.org/git/20171028004419.10139-1-sbeller@google.com/

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-04 15:02:40 -08:00
Todd Zullinger a812952aab http: fix v1 protocol tests with apache httpd < 2.4
The apache config used by tests was updated to use the SetEnvIf
directive to set the Git-Protocol header in 19113a26b6 ("http: tell
server that the client understands v1", 2017-10-16).

Setting the Git-Protocol header is restricted to httpd >= 2.4, but
mod_setenvif and the SetEnvIf directive work with lower versions, at
least as far back as 2.0, according to the httpd documentation:

    https://httpd.apache.org/docs/2.0/mod/mod_setenvif.html

Drop the restriction.  Tested with httpd 2.2 and 2.4.

Signed-off-by: Todd Zullinger <tmz@pobox.com>
Acked-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-04 10:45:57 -08:00
Ævar Arnfjörð Bjarmason 7b31b55db1 perf: amend the grep tests to test grep.threads
Ever since 5b594f457a ("Threaded grep", 2010-01-25) the number of
threads git-grep uses under PTHREADS has been hardcoded to 8, but
there's no performance test to check whether this is an optimal
setting.

Amend the existing tests for the grep engines to support a mode where
this can be tested, e.g.:

    GIT_PERF_GREP_THREADS='1 8 16' GIT_PERF_LARGE_REPO=~/g/linux ./run p782*

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-04 10:24:48 -08:00
Johannes Schindelin 89a70b80eb t0302 & t3900: add forgotten quotes
When cleaning up files in the $HOME directory, it really makes sense to
quote the path, especially in Git's test suite, where the HOME directory
is *guaranteed* to contain spaces in its name.

It would appear that those two tests pass even without cleaning up the
files, but really more by pure chance than by design (the cleanup seems
not actually to be necessary).

However, if anybody would have a left-over `trash/` directory in Git's
`t/` directory, these tests would fail, because they would all of a
sudden try to delete that directory, but without the `-r` (recursive)
flag. That is how this issue was found.

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>
2018-01-03 15:55:50 -08:00
Johannes Schindelin 567c53d00f Allow the test suite to pass in a directory whose name contains spaces
It is totally legitimate to clone Git's source code anywhere, including
into, say, directories whose name (or the name of its absolute path)
contains spaces.

However, a couple of tests failed to anticipate this, for lack of
quoting (or in one instance, for failure to expect more than one space
in the absolute path of the TEST_DIRECTORY). This can be easily verified
by calling these commands in your current clone:

	git clone . with\ spaces
	cd with\ spaces
	make -j15 test

Let's fix this.

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>
2018-01-03 15:55:48 -08:00
Jeff King d45420c1c8 clone: do not clean up directories we didn't create
Once upon a time, git-clone would refuse to write into a
directory that it did not itself create. The cleanup
routines for a failed clone could therefore just remove the
git and worktree dirs completely.

In 55892d2398 (Allow cloning to an existing empty directory,
2009-01-11), we learned to write into an existing directory.
Which means that doing:

  mkdir foo
  git clone will-fail foo

ends up deleting foo. This isn't a huge catastrophe, since
by definition foo must be empty. But it's somewhat
confusing; we should leave the filesystem as we found it.

Because we know that the only directory we'll write into is
an empty one, we can handle this case by just passing the
KEEP_TOPLEVEL flag to our recursive delete (if we could
write into populated directories, we'd have to keep track of
what we wrote and what we did not, which would be much
harder).

Note that we need to handle the work-tree and git-dir
separately, though, as only one might exist (and the new
tests in t5600 cover all cases).

Reported-by: Stephan Janssen <sjanssen@you-get.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-03 13:33:49 -08:00
Jeff King 8486b84f0e t5600: modernize style
This is an old script which could use some updating before
we add to it:

  - use the standard line-breaking:

      test_expect_success 'title' '
              body
      '

  - run all code inside test_expect blocks to catch
    unexpected failures in setup steps

  - use "test_commit -C" instead of manually entering
    sub-repo

  - use test_when_finished for cleanup steps

  - test_path_is_* as appropriate

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-03 13:33:03 -08:00
Jeff King a4c4efd251 t5600: fix outdated comment about unborn HEAD
Back when this test was written, git-clone could not handle
a repository without any commits. These days it works fine,
and this comment is out of date.

At first glance it seems like we could just drop this code
entirely now, but it's necessary for the final test, which
was added later. That test corrupts the repository by
temporarily removing its objects, which means we need to
have some objects to move.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-03 13:33:02 -08:00
Junio C Hamano fd48b46474 merge: teach -Xours/-Xtheirs to symbolic link merge
The -Xours/-Xtheirs merge options were originally defined as a way
to "force" the resolution of 3way textual merge conflicts to take
one side without using your editor, hence did not even trigger in
situations where you would normally not get the <<< === >>> conflict
markers.

This was improved for binary files back in 2012 with a944af1d
("merge: teach -Xours/-Xtheirs to binary ll-merge driver",
2012-09-08).

Teach a similar trick to the codepath that deals with merging two
conflicting changes to symbolic links.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Tested-by: Yaroslav Halchenko <yoh@onerussian.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-03 11:26:59 -08:00
Junio C Hamano 556de1a8e3 Merge branch 'sb/describe-blob'
"git describe" was taught to dig trees deeper to find a
<commit-ish>:<path> that refers to a given blob object.

* sb/describe-blob:
  builtin/describe.c: describe a blob
  builtin/describe.c: factor out describe_commit
  builtin/describe.c: print debug statements earlier
  builtin/describe.c: rename `oid` to avoid variable shadowing
  revision.h: introduce blob/tree walking in order of the commits
  list-objects.c: factor out traverse_trees_and_blobs
  t6120: fix typo in test name
2017-12-28 14:08:50 -08:00
Junio C Hamano 0433d533f1 Merge branch 'hi/merge-verify-sig-config'
"git merge" learned to pay attention to merge.verifySignatures
configuration variable and pretend as if '--verify-signatures'
option was given from the command line.

* hi/merge-verify-sig-config:
  t5573, t7612: clean up after unexpected success of 'pull' and 'merge'
  t: add tests for pull --verify-signatures
  merge: add config option for verifySignatures
2017-12-28 14:08:50 -08:00
Junio C Hamano 8e777af273 Merge branch 'bp/fsmonitor'
Test fix.

* bp/fsmonitor:
  p7519: improve check for prerequisite WATCHMAN
2017-12-28 14:08:48 -08:00
Junio C Hamano deeb2fce08 Merge branch 'tz/lib-git-svn-svnserve-tests'
* tz/lib-git-svn-svnserve-tests:
  t/lib-git-svn.sh: improve svnserve tests with parallel make test
  t/lib-git-svn: cleanup inconsistent tab/space usage
2017-12-28 14:08:46 -08:00
Junio C Hamano 63dd544897 Merge branch 'ew/svn-crlf'
"git svn" has been updated to strip CRs in the commit messages, as
recent versions of Subversion rejects them.

* ew/svn-crlf:
  git-svn: convert CRLF to LF in commit message to SVN
2017-12-28 14:08:46 -08:00
Junio C Hamano f427b94985 Merge branch 'cc/skip-to-optional-val'
Introduce a helper to simplify code to parse a common pattern that
expects either "--key" or "--key=<something>".

* cc/skip-to-optional-val:
  t4045: reindent to make helpers readable
  diff: add tests for --relative without optional prefix value
  diff: use skip_to_optional_arg_default() in parsing --relative
  diff: use skip_to_optional_arg_default()
  diff: use skip_to_optional_arg()
  index-pack: use skip_to_optional_arg()
  git-compat-util: introduce skip_to_optional_arg()
2017-12-28 14:08:46 -08:00
Nguyễn Thái Ngọc Duy 176ea74793 wt-status.c: handle worktree renames
Before 425a28e0a4 (diff-lib: allow ita entries treated as "not yet exist
in index" - 2016-10-24) there are never "new files" in the index, which
essentially disables rename detection because we only detect renames
when a new file appears in a diff pair.

After that commit, an i-t-a entry can appear as a new file in "git
diff-files". But the diff callback function in wt-status.c does not
handle this case and produces incorrect status output.

PS. The reader may notice that this patch adds a new xstrdup() but not
a free(). Yes we leak memory (the same for head_path). But wt_status
so far has been short lived, this leak should not matter in
practice.

Noticed-by: Alex Vandiver <alexmv@dropbox.com>
Helped-by: Igor Djordjevic <igor.d.djordjevic@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-27 12:38:35 -08:00
Nguyễn Thái Ngọc Duy 6de5aafdd1 t2203: test status output with porcelain v2 format
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-27 12:38:35 -08:00
Junio C Hamano 06358125b8 Merge branch 'sb/test-helper-excludes'
Simplify the ignore rules for t/helper directory.

* sb/test-helper-excludes:
  t/helper: ignore everything but sources
2017-12-27 11:16:29 -08:00
Junio C Hamano 237aa99cd2 Merge branch 'es/clone-shared-worktree'
"git clone --shared" to borrow from a (secondary) worktree did not
work, even though "git clone --local" did.  Both are now accepted.

* es/clone-shared-worktree:
  clone: support 'clone --shared' from a worktree
2017-12-27 11:16:28 -08:00
Junio C Hamano eacf669cec Merge branch 'jt/decorate-api'
A few structures and variables that are implementation details of
the decorate API have been renamed and then the API got documented
better.

* jt/decorate-api:
  decorate: clean up and document API
2017-12-27 11:16:26 -08:00
Junio C Hamano e87f9fc9d4 Merge branch 'es/worktree-checkout-hook'
"git worktree add" learned to run the post-checkout hook, just like
"git checkout" does, after the initial checkout.

* es/worktree-checkout-hook:
  worktree: invoke post-checkout hook (unless --no-checkout)
2017-12-27 11:16:21 -08:00
Junio C Hamano 0da2ba4880 Merge branch 'lb/rebase-i-short-command-names'
With a configuration variable rebase.abbreviateCommands set,
"git rebase -i" produces the todo list with a single-letter
command names.

* lb/rebase-i-short-command-names:
  sequencer.c: drop 'const' from function return type
  t3404: add test case for abbreviated commands
  rebase -i: learn to abbreviate command names
  rebase -i -x: add exec commands via the rebase--helper
  rebase -i: update functions to use a flags parameter
  rebase -i: replace reference to sha1 with oid
  rebase -i: refactor transform_todo_ids
  rebase -i: set commit to null in exec commands
  Documentation: use preferred name for the 'todo list' script
  Documentation: move rebase.* configs to new file
2017-12-27 11:16:21 -08:00
Junio C Hamano 720b1764de Merge branch 'tb/check-crlf-for-safe-crlf'
The "safe crlf" check incorrectly triggered for contents that does
not use CRLF as line endings, which has been corrected.

* tb/check-crlf-for-safe-crlf:
  t0027: Adapt the new MIX tests to Windows
  convert: tighten the safe autocrlf handling
2017-12-27 11:16:21 -08:00
Junio C Hamano 61061abba7 Merge branch 'jh/object-filtering'
In preparation for implementing narrow/partial clone, the object
walking machinery has been taught a way to tell it to "filter" some
objects from enumeration.

* jh/object-filtering:
  rev-list: support --no-filter argument
  list-objects-filter-options: support --no-filter
  list-objects-filter-options: fix 'keword' typo in comment
  pack-objects: add list-objects filtering
  rev-list: add list-objects filtering support
  list-objects: filter objects in traverse_commit_list
  oidset: add iterator methods to oidset
  oidmap: add oidmap iterator methods
  dir: allow exclusions from blob in addition to file
2017-12-27 11:16:21 -08:00
Daniel Knittl-Frank 1bba00130a describe: prepend "tags/" when describing tags with embedded name
The man page of the "git describe" command explains the expected
output when using the --all option, i.e. the full reference path is
shown, including heads/ or tags/ prefix.

When 212945d4a8 ("Teach git-describe
to verify annotated tag names before output") made Git favor the
embedded name of annotated tags, it accidentally changed the output
format when the --all flag is given, only printing the tag's name
without the prefix.

Check if --all was specified and re-add the "tags/" prefix for this
special case to fix the regresssion.

Signed-off-by: Daniel Knittl-Frank <knittl89+git@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-27 10:23:11 -08:00
Johannes Schindelin ed1e52822e sequencer: assign only free()able strings to gpg_sign
The gpg_sign member of the replay_opts structure is of type `char *`,
meaning that the sequencer deems the string to which gpg_sign points to
be under its custody, i.e. it needs to be free()d by the sequencer.

Therefore, let's only assign malloc()ed buffers to it.

Reported-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 13:34:28 -08:00
Luke Diamand 8cf422dbf1 git-p4: update multiple shelved change lists
--update-shelve can now be specified multiple times on the
command-line, to update multiple shelved changelists in a single
submit.

This then means that a git patch series can be mirrored to a
sequence of shelved changelists, and (relatively easily) kept in
sync as changes are made in git.

Note that Perforce does not really support overlapping shelved
changelists where one change touches the files modified by
another. Trying to do this will result in merge conflicts.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 13:30:52 -08:00
Ævar Arnfjörð Bjarmason 30884c9afc commit: add support for --fixup <commit> -m"<extra message>"
Add support for supplying the -m option with --fixup. Doing so has
errored out ever since --fixup was introduced. Before this, the only
way to amend the fixup message while committing was to use --edit and
amend it in the editor.

The use-case for this feature is one of:

 * Leaving a quick note to self when creating a --fixup commit when
   it's not self-evident why the commit should be squashed without a
   note into another one.

 * (Ab)using the --fixup feature to "fix up" commits that have already
   been pushed to a branch that doesn't allow non-fast-forwards,
   i.e. just noting "this should have been part of that other commit",
   and if the history ever got rewritten in the future the two should
   be combined.

   In such a case you might want to leave a small message,
   e.g. "forgot this part, which broke XYZ".

With this, --fixup <commit> -m"More" -m"Details" will result in a
commit message like:

    !fixup <subject of <commit>>

    More

    Details

The reason the test being added here seems to squash "More" at the end
of the subject line of the commit being fixed up is because the test
code is using "%s%b" so the body immediately follows the subject, it's
not a bug in this code, and other tests t7500-commit.sh do the same
thing.

When the --fixup option was initially added the "Option -m cannot be
combined" error was expanded from -c, -C and -F to also include
--fixup[1]

Those options could also support combining with -m, but given what
they do I can't think of a good use-case for doing that, so I have not
made the more invasive change of splitting up the logic in commit.c to
first act on those, and then on -m options.

1. d71b8ba7c9 ("commit: --fixup option for use with rebase
   --autosquash", 2010-11-02)

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 13:10:24 -08:00
Torsten Bögershausen 7dbe8c8003 check-non-portable-shell.pl: `wc -l` may have leading WS
Test scripts count number of lines in an output and check it againt
its expectation.  fb3340a6 ("test-lib: introduce test_line_count to
measure files", 2010-10-31) introduced a helper to show a failure in
such a test in a more readable way than comparing `wc -l` output with
a number.

Besides, on some platforms, "$(wc -l <file)" is padded with leading
whitespace on the left, so

	test "$(wc -l <file)" = 4

would not work (most notably on macosX); the users of test_line_count
helper would not suffer from such a portability glitch.

Add a check in check-non-portable-shell.pl to find '"' between
`wc -l` and '=' and hint the user about test_line_count().

Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Reviewed-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 13:00:51 -08:00
Junio C Hamano b6825b5c8e Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index
* ew/empty-merge-with-dirty-index-maint:
  merge-recursive: avoid incorporating uncommitted changes in a merge
  move index_has_changes() from builtin/am.c to merge.c for reuse
  t6044: recursive can silently incorporate dirty changes in a merge
2017-12-22 12:48:38 -08:00
Elijah Newren 65170c07d4 merge-recursive: avoid incorporating uncommitted changes in a merge
builtin/merge.c contains this important requirement for merge strategies:
	/*
	 * At this point, we need a real merge.  No matter what strategy
	 * we use, it would operate on the index, possibly affecting the
	 * working tree, and when resolved cleanly, have the desired
	 * tree in the index -- this means that the index must be in
	 * sync with the head commit.  The strategies are responsible
	 * to ensure this.
	 */

merge-recursive does not do this check directly, instead it relies on
unpack_trees() to do it.  However, merge_trees() has a special check for
the merge branch exactly matching the merge base; when it detects that
situation, it returns early without calling unpack_trees(), because it
knows that the HEAD commit already has the correct result.  Unfortunately,
it didn't check that the index matched HEAD, so after it returned, the
outer logic ended up creating a merge commit that included something
other than HEAD.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 12:20:38 -08:00
Elijah Newren eab3f2850e t6044: recursive can silently incorporate dirty changes in a merge
The recursive merge strategy has some special handling when the tree for
the merge branch exactly matches the merge base, but that code path is
missing checks for the index having changes relative to HEAD.  Add a
testcase covering this scenario.

Reported-by: Andreas Krey <a.krey@gmx.de>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 12:14:16 -08:00
Stefan Beller 74dea0e13c t/helper/test-lazy-name-hash: fix compilation
I was compiling origin/master today with DEVELOPER compiler flags
and was greeted by:

t/helper/test-lazy-init-name-hash.c: In function ‘cmd_main’:
t/helper/test-lazy-init-name-hash.c:172:5: error: ‘nr_threads_used’ may be used uninitilized in this function [-Werror=maybe-uninitialized]
     printf("avg [size %8d] [single %f] %c [multi %f %d]\n",
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         nr,
         ~~~
         (double)avg_single/1000000000,
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         (avg_single < avg_multi ? '<' : '>'),
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         (double)avg_multi/1000000000,
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         nr_threads_used);
         ~~~~~~~~~~~~~~~~
t/helper/test-lazy-init-name-hash.c:115:6: note: ‘nr_threads_used’ was declared here
  int nr_threads_used;
      ^~~~~~~~~~~~~~~

I do not see how we can arrive at that line without having `nr_threads_used`
initialized, as we'd have `count > 1`  (which asserts that we ran the
loop above at least once, such that it *should* be initialized).

Just clear the variable at the beginning of the function to squelch
the warning.

Signed-off-by: Stefan Beller <sbeller@google.com>
Acked-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 10:42:04 -08:00
Junio C Hamano fb2afea366 t5573, t7612: clean up after unexpected success of 'pull' and 'merge'
The previous steps added test_when_finished to tests that run 'git
pull' or 'git merge' with expectation of success, so that the test
after them can start from a known state even when their 'git pull'
invocation unexpectedly fails.  However, tests that run 'git pull'
or 'git merge' expecting it not to succeed forgot to protect later
tests the same way---if they unexpectedly succeed, the test after
them would start from an unexpected state.

Reset and checkout the initial commit after all these tests, whether
they expect their invocations to succeed or fail.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-19 12:58:57 -08:00
Junio C Hamano 8d7fefaac4 Merge branch 'ar/unconfuse-three-dots'
Ancient part of codebase still shows dots after an abbreviated
object name just to show that it is not a full object name, but
these ellipses are confusing to people who newly discovered Git
who are used to seeing abbreviated object names and find them
confusing with the range syntax.

* ar/unconfuse-three-dots:
  t2020: test variations that matter
  t4013: test new output from diff --abbrev --raw
  diff: diff_aligned_abbrev: remove ellipsis after abbreviated SHA-1 value
  t4013: prepare for upcoming "diff --raw --abbrev" output format change
  checkout: describe_detached_head: remove ellipsis after committish
  print_sha1_ellipsis: introduce helper
  Documentation: user-manual: limit usage of ellipsis
  Documentation: revisions: fix typo: "three dot" ---> "three-dot" (in line with "two-dot").
2017-12-19 11:33:58 -08:00
Junio C Hamano 66d3f19324 Merge branch 'tg/worktree-create-tracking'
The way "git worktree add" determines what branch to create from
where and checkout in the new worktree has been updated a bit.

* tg/worktree-create-tracking:
  add worktree.guessRemote config option
  worktree: add --guess-remote flag to add subcommand
  worktree: make add <path> <branch> dwim
  worktree: add --[no-]track option to the add subcommand
  worktree: add can be created from any commit-ish
  checkout: factor out functions to new lib file
2017-12-19 11:33:57 -08:00