Commit Graph

11732 Commits

Author SHA1 Message Date
Junio C Hamano
da2b74eeec Merge branch 'sb/submodule-embed-gitdir'
A new submodule helper "git submodule embedgitdirs" to make it
easier to move embedded .git/ directory for submodules in a
superproject to .git/modules/ (and point the latter with the former
that is turned into a "gitdir:" file) has been added.

* sb/submodule-embed-gitdir:
  worktree: initialize return value for submodule_uses_worktrees
  submodule: add absorb-git-dir function
  move connect_work_tree_and_git_dir to dir.h
  worktree: check if a submodule uses worktrees
  test-lib-functions.sh: teach test_commit -C <dir>
  submodule helper: support super prefix
  submodule: use absolute path for computing relative path connecting
2017-01-10 15:24:28 -08:00
Junio C Hamano
87359ffcc8 Merge branch 'mh/fast-import-notes-fix-new'
"git fast-import" sometimes mishandled while rebalancing notes
tree, which has been fixed.

* mh/fast-import-notes-fix-new:
  fast-import: properly fanout notes when tree is imported
2017-01-10 15:24:26 -08:00
Junio C Hamano
e484bcbab1 Merge branch 'jc/compression-config'
Compression setting for producing packfiles were spread across
three codepaths, one of which did not honor any configuration.
Unify these so that all of them honor core.compression and
pack.compression variables the same way.

* jc/compression-config:
  compression: unify pack.compression configuration parsing
2017-01-10 15:24:25 -08:00
Junio C Hamano
d984592043 Merge branch 'dt/smart-http-detect-server-going-away'
When the http server gives an incomplete response to a smart-http
rpc call, it could lead to client waiting for a full response that
will never come.  Teach the client side to notice this condition
and abort the transfer.

An improvement counterproposal has failed.
cf. <20161114194049.mktpsvgdhex2f4zv@sigill.intra.peff.net>

* dt/smart-http-detect-server-going-away:
  upload-pack: optionally allow fetching any sha1
  remote-curl: don't hang when a server dies before any output
2017-01-10 15:24:25 -08:00
Richard Hansen
d0e0cfe745 mergetool: fix running in subdir when rerere enabled
"git mergetool" (without any pathspec on the command line) that is
not run from the top-level of the working tree no longer works in
Git v2.11, failing to get the list of unmerged paths from the output
of "git rerere remaining".  This regression was introduced by
57937f70a0 ("mergetool: honor diff.orderFile", 2016-10-07).

This is because the pathnames output by the 'git rerere remaining'
command are relative to the top-level directory but the 'git diff
--name-only' command expects its pathname arguments to be relative
to the current working directory.  To make everything consistent,
cd_to_toplevel before running 'git diff --name-only' and adjust any
relative pathnames.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:51 -08:00
Richard Hansen
b9ebb65926 t7610: add test case for rerere+mergetool+subdir bug
If rerere is enabled and mergetool is run from a subdirectory,
mergetool always prints "No files need merging".  Add an expected
failure test case for this situation.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:20 -08:00
Richard Hansen
bd9714f253 t7610: spell 'git reset --hard' consistently
Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:20 -08:00
Richard Hansen
fef6c06d64 t7610: don't assume the checked-out commit
Always check out the required commit at the beginning of the test so
that a failure in a previous test does not cause the test to work off
of the wrong commit.

This is a step toward making the tests more independent so that if one
test fails it doesn't cause subsequent tests to fail.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:20 -08:00
Richard Hansen
61b76d2de3 t7610: always work on a test-specific branch
Create and use a test-specific branch when the test might create a
commit.  This is not always necessary for correctness, but it improves
debuggability by ensuring a commit created by test #N shows up on the
testN branch, not the branch for test #N-1.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:20 -08:00
Richard Hansen
e866ff851a t7610: delete some now-unnecessary 'git reset --hard' lines
Tests now always run 'git reset --hard' at the end (even if they
fail), so it's no longer necessary to run 'git reset --hard' at the
beginning of a test.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:20 -08:00
Richard Hansen
c3ad3126b8 t7610: run 'git reset --hard' after each test to clean up
Use test_when_finished to run 'git reset --hard' after each test so
that the repository is left in a saner state for the next test.

This is a step toward making the tests more independent so that if one
test fails it doesn't cause subsequent tests to fail.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:20 -08:00
Richard Hansen
b696ac9aaf t7610: don't rely on state from previous test
If the repository must be in a particular state (beyond what is
already done by the 'setup' test case) before the test can run, make
the necessary repository changes in the test script even if it means
duplicating some lines of code from the previous test case.

This is a step toward making the tests more independent so that if one
test fails it doesn't cause subsequent tests to fail.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:20 -08:00
Richard Hansen
614eb27f02 t7610: use test_when_finished for cleanup tasks
This is a step toward making the tests more independent so that if one
test fails it doesn't cause subsequent tests to fail.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:20 -08:00
Richard Hansen
157acfcf35 t7610: move setup code to the 'setup' test case
Multiple test cases depend on these hunks, so move them to the 'setup'
test case.  This is a step toward making the tests more independent so
that if one test fails it doesn't cause subsequent tests to fail.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:19 -08:00
Richard Hansen
ecfdf0bd2f t7610: update branch names to match test number
Rename the testNN branches so that NN matches the test number.  This
should make it easier to troubleshoot test issues.  Use $test_count to
keep this future-proof.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:19 -08:00
Stefan Beller
2d81c48fa7 pathspec: give better message for submodule related pathspec error
Every once in a while someone complains to the mailing list to have
run into this weird assertion[1]. The usual response from the mailing
list is link to old discussions[2], and acknowledging the problem
stating it is known.

This patch accomplishes two things:

  1. Switch assert() to die("BUG") to give a more readable message.

  2. Take one of the cases where we hit a BUG and turn it into a normal
     "there was something wrong with the input" message.

     This assertion triggered for cases where there wasn't a programming
     bug, but just bogus input. In particular, if the user asks for a
     pathspec that is inside a submodule, we shouldn't assert() or
     die("BUG"); we should tell the user their request is bogus.

     The only reason we did not check for it, is the expensive nature
     of such a check, so callers avoid setting the flag
     PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE. However when we die due
     to bogus input, the expense of CPU cycles spent outweighs the user
     wondering what went wrong, so run that check unconditionally before
     dying with a more generic error message.

Note: There is a case (e.g. "git -C submodule add .") in which we call
strip_submodule_slash_expensive, as git-add requests it via the flag
PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE, but the assert used to
trigger nevertheless, because the flag PATHSPEC_LITERAL was not set,
such that we executed

	if (item->nowildcard_len < prefixlen)
		item->nowildcard_len = prefixlen;

and prefixlen was not adapted (e.g. it was computed from "submodule/")
So in the die_inside_submodule_path function we also need handle paths,
that were stripped before, i.e. are the exact submodule path. This
is why the conditions in die_inside_submodule_path are slightly
different than in strip_submodule_slash_expensive.

[1] https://www.google.com/search?q=item-%3Enowildcard_len
[2] http://git.661346.n2.nabble.com/assert-failed-in-submodule-edge-case-td7628687.html
    https://www.spinics.net/lists/git/msg249473.html

Helped-by: Jeff King <peff@peff.net>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-09 15:19:22 -08:00
Pranit Bauva
c6f44e1da5 t9813: avoid using pipes
The exit code of the upstream in a pipe is ignored thus we should avoid
using it. By writing out the output of the git command to a file, we can
test the exit codes of both the commands.

Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Acked-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-09 01:54:47 -08:00
Jeff King
4e76832984 blame: output porcelain "previous" header for each file
It's possible for content currently found in one file to
have originated in two separate files, each of which may
have been modified in some single older commit.  The
--porcelain output generates an incorrect "previous" header
in this case, whereas --line-porcelain gets it right.  The
problem is that the porcelain output tries to omit repeated
details of commits, and treats "previous" as a property of
the commit, when it is really a property of the blamed block
of lines.

Let's look at an example. In a case like this, you might see
this output from --line-porcelain:

  SOME_SHA1 1 1 1
  author ...
  committer ...
  previous SOME_SHA1^ file_one
  filename file_one
          ...some line content...
  SOME_SHA1 2 1 1
  author ...
  committer ...
  previous SOME_SHA1^ file_two
  filename file_two
          ...some different content....

The "filename" fields tell us that the two lines are from
two different files. But notice that the filename also
appears in the "previous" field, which tells us where to
start a re-blame. The second content line never appeared in
file_one at all, so we would obviously need to re-blame from
file_two (or possibly even some other file, if had just been
renamed to file_two in SOME_SHA1).

So far so good. Now here's what --porcelain looks like:

  SOME_SHA1 1 1 1
  author ...
  committer ...
  previous SOME_SHA1^ file_one
  filename file_one
          ...some line content...
  SOME_SHA1 2 1 1
  filename file_two
          ...some different content....

We've dropped the author and committer fields from the
second line, as they would just be repeats.  But we can't
omit "filename", because it depends on the actual block of
blamed lines, not just the commit. This is handled by
emit_porcelain_details(), which will show the filename
either if it is the first mention of the commit _or_ if the
commit has multiple paths in it.

But we don't give "previous" the same handling. It's written
inside emit_one_suspect_detail(), which bails early if we've
already seen that commit. And so the output above is wrong;
a reader would assume that the correct place to re-blame
line two is from file_one, but that's obviously nonsense.

Let's treat "previous" the same as "filename", and show it
fresh whenever we know we are in a confusing case like this.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 19:34:54 -08:00
Jeff King
ed58d8088b blame: handle --no-abbrev
You can already ask blame for full sha1s with "-l" or with
"--abbrev=40". But for consistency with other parts of Git,
we should support "--no-abbrev".

Worse, blame already accepts --no-abbrev, but it's totally
broken. When we see --no-abbrev, the abbrev variable is set
to 0, which is then used as a printf precision. For regular
sha1s, that means we print nothing at all (which is very
wrong). For boundary commits we decrement it to "-1", which
printf interprets as "no limit" (which is almost correct,
except it misses the 39-length magic explained in the
previous commit).

Let's detect --no-abbrev and behave as if --abbrev=40 was
given.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 19:34:54 -08:00
Jeff King
91229834c2 blame: fix alignment with --abbrev=40
The blame command internally adds 1 to any requested sha1
abbreviation length, and then subtracts it when outputting a
boundary commit. This lets regular and boundary sha1s line
up visually, but it misses one corner case.

When the requested length is 40, we bump the value to 41.
But since we only have 40 characters, that's all we can show
(fortunately the truncation is done by a printf precision
field, so it never tries to read past the end of the
buffer).  So a normal sha1 shows 40 hex characters, and a
boundary sha1 shows "^" plus 40 hex characters. The result
is misaligned.

The "-l" option to show long sha1s gets around this by
skipping the "abbrev" variable entirely and just always
using GIT_SHA1_HEXSZ.  This avoids the "+1" issue, but it
does mean that boundary commits only have 39 characters
printed.  This is somewhat odd, but it does look good
visually: the results are aligned and left-justified. The
alternative would be to allocate an extra column that would
contain either an extra space or the "^" boundary marker.

As this is by definition the human-readable view, it's
probably not that big a deal either way (and of course
--porcelain, etc, correctly produce correct 40-hex sha1s).
But for consistency, this patch teaches --abbrev=40 to
produce the same output as "-l" (always left-aligned, with
40-hex for normal sha1s, and "^" plus 39-hex for
boundaries).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 19:34:54 -08:00
Kyle Meyer
b10731f43d branch_get_push: do not segfault when HEAD is detached
Move the detached HEAD check from branch_get_push_1() to
branch_get_push() to avoid setting branch->push_tracking_ref when
branch is NULL.

Signed-off-by: Kyle Meyer <kyle@kyleam.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 19:20:07 -08:00
Jeff King
965cba2e7e archive-zip: load userdiff config
Since 4aff646d17 (archive-zip: mark text files in archives,
2015-03-05), the zip archiver will look at the userdiff
driver to decide whether a file is text or binary. This
usually doesn't need to look any further than the attributes
themselves (e.g., "-diff", etc). But if the user defines a
custom driver like "diff=foo", we need to look at
"diff.foo.binary" in the config. Prior to this patch, we
didn't actually load it.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 18:49:30 -08:00
Johannes Schindelin
16615f0fbc mingw: add a regression test for pushing to UNC paths
On Windows, there are "UNC paths" to access network (AKA shared)
folders, of the form \\server\sharename\directory. This provides a
convenient way for Windows developers to share their Git repositories
without having to have a dedicated server.

Git for Windows v2.11.0 introduced a regression where pushing to said
UNC paths no longer works, although fetching and cloning still does, as
reported here: https://github.com/git-for-windows/git/issues/979

This regression was fixed in 7814fbe3f1 (normalize_path_copy(): fix
pushing to //server/share/dir on Windows, 2016-12-14).

Let's make sure that it does not regress again, by introducing a test
that uses so-called "administrative shares": disk volumes are
automatically shared under certain circumstances, e.g.  the C: drive is
shared as \\localhost\c$. The test needs to be skipped if the current
directory is inaccessible via said administrative share, of course.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 13:39:29 -08:00
Pranit Bauva
c7cf956618 don't use test_must_fail with grep
test_must_fail should only be used for testing git commands. To test the
failure of other commands use `!`.

Reported-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 13:20:01 -08:00
David Turner
1c409a705c repack: die on incremental + write-bitmap-index
The bitmap index only works for single packs, so requesting an
incremental repack with bitmap indexes makes no sense.

Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-29 13:45:37 -08:00
David Turner
bdf56de896 auto gc: don't write bitmaps for incremental repacks
When git gc --auto does an incremental repack of loose objects, we do
not expect to be able to write a bitmap; it is very likely that
objects in the new pack will have references to objects outside of the
pack.  So we shouldn't try to write a bitmap, because doing so will
likely issue a warning.

This warning was making its way into gc.log.  When the gc.log was
present, future auto gc runs would refuse to run.

Patch by Jeff King.
Bug report, test, and commit message by David Turner.

Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-29 13:45:35 -08:00
Stefan Beller
55856a35b2 rm: absorb a submodules git dir before deletion
When deleting a submodule, we need to keep the actual git directory around,
such that we do not lose local changes in there and at a later checkout
of the submodule we don't need to clone it again.

Now that the functionality is available to absorb the git directory of a
submodule, rewrite the checking in git-rm to not complain, but rather
relocate the git directories inside the superproject.

An alternative solution was discussed to have a function
`depopulate_submodule`. That would couple the check for its git directory
and possible relocation before the the removal, such that it is less
likely to miss the check in the future.  But the indirection with such
a function added seemed also complex. The reason for that was that this
possible move of the git directory was also implemented in
`ok_to_remove_submodule`, such that this function could truthfully
answer whether it is ok to remove the submodule.

The solution proposed here defers all these checks to the caller.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-27 14:19:35 -08:00
Junio C Hamano
7143258d79 Merge branch 'ls/p4-lfs'
Update GitLFS integration with "git p4".

* ls/p4-lfs:
  git-p4: add diff/merge properties to .gitattributes for GitLFS files
2016-12-27 00:11:46 -08:00
Junio C Hamano
ad1b4e2c0e Merge branch 'lt/shortlog-by-committer'
"git shortlog" learned "--committer" option to group commits by
committer, instead of author.

* lt/shortlog-by-committer:
  t4201: make tests work with and without the MINGW prerequiste
  shortlog: test and document --committer option
  shortlog: group by committer information
2016-12-27 00:11:44 -08:00
Junio C Hamano
d7dcd52a42 Merge branch 'gv/p4-multi-path-commit-fix'
"git p4" that tracks multile p4 paths imported a single changelist
that touches files in these multiple paths as one commit, followed
by many empty commits.  This has been fixed.

* gv/p4-multi-path-commit-fix:
  git-p4: fix multi-path changelist empty commits
2016-12-27 00:11:43 -08:00
Junio C Hamano
f723df5810 Merge branch 'ld/p4-compare-dir-vs-symlink'
"git p4" misbehaved when swapping a directory and a symbolic link.

* ld/p4-compare-dir-vs-symlink:
  git-p4: avoid crash adding symlinked directory
2016-12-27 00:11:42 -08:00
Junio C Hamano
08721a056b Merge branch 'ls/filter-process'
Doc update.

* ls/filter-process:
  t0021: fix flaky test
  docs: warn about possible '=' in clean/smudge filter process values
2016-12-27 00:11:42 -08:00
Junio C Hamano
9d540e9726 Merge branch 'bw/transport-protocol-policy'
Finer-grained control of what protocols are allowed for transports
during clone/fetch/push have been enabled via a new configuration
mechanism.

* bw/transport-protocol-policy:
  http: respect protocol.*.allow=user for http-alternates
  transport: add from_user parameter to is_transport_allowed
  http: create function to get curl allowed protocols
  transport: add protocol policy config option
  http: always warn if libcurl version is too old
  lib-proto-disable: variable name fix
2016-12-27 00:11:41 -08:00
Junio C Hamano
05f6e1be8c Merge branch 'cp/merge-continue'
"git merge --continue" has been added as a synonym to "git commit"
to conclude a merge that has stopped due to conflicts.

* cp/merge-continue:
  merge: mark usage error strings for translation
  merge: ensure '--abort' option takes no arguments
  completion: add --continue option for merge
  merge: add '--continue' option as a synonym for 'git commit'
2016-12-27 00:11:41 -08:00
Junio C Hamano
1d73f8e86d Merge branch 'va/i18n-perl-scripts'
Porcelain scripts written in Perl are getting internationalized.

* va/i18n-perl-scripts:
  i18n: difftool: mark warnings for translation
  i18n: send-email: mark composing message for translation
  i18n: send-email: mark string with interpolation for translation
  i18n: send-email: mark warnings and errors for translation
  i18n: send-email: mark strings for translation
  i18n: add--interactive: mark status words for translation
  i18n: add--interactive: remove %patch_modes entries
  i18n: add--interactive: mark edit_hunk_manually message for translation
  i18n: add--interactive: i18n of help_patch_cmd
  i18n: add--interactive: mark patch prompt for translation
  i18n: add--interactive: mark plural strings
  i18n: clean.c: match string with git-add--interactive.perl
  i18n: add--interactive: mark strings with interpolation for translation
  i18n: add--interactive: mark simple here-documents for translation
  i18n: add--interactive: mark strings for translation
  Git.pm: add subroutines for commenting lines
2016-12-27 00:11:40 -08:00
Junio C Hamano
95d0367b2e Merge branch 'sb/submodule-config-cleanup'
Minor code clean-up.

* sb/submodule-config-cleanup:
  submodule-config: clarify parsing of null_sha1 element
  submodule-config: rename commit_sha1 to treeish_name
  submodule config: inline config_from_{name, path}
2016-12-27 00:11:40 -08:00
Junio C Hamano
6c18dd4dc3 Merge branch 'jc/push-default-explicit'
A lazy "git push" without refspec did not internally use a fully
specified refspec to perform 'current', 'simple', or 'upstream'
push, causing unnecessary "ambiguous ref" errors.

* jc/push-default-explicit:
  push: test pushing ambiguously named branches
  push: do not use potentially ambiguous default refspec
2016-12-27 00:11:40 -08:00
Brandon Williams
e6fac7f3d3 grep: search history of moved submodules
If a submodule was renamed at any point since it's inception then if you
were to try and grep on a commit prior to the submodule being moved, you
wouldn't be able to find a working directory for the submodule since the
path in the past is different from the current path.

This patch teaches grep to find the .git directory for a submodule in
the parents .git/modules/ directory in the event the path to the
submodule in the commit that is being searched differs from the state of
the currently checked out commit.  If found, the child process that is
spawned to grep the submodule will chdir into its gitdir instead of a
working directory.

In order to override the explicit setting of submodule child process's
gitdir environment variable (which was introduced in '10f5c526')
`GIT_DIR_ENVIORMENT` needs to be pushed onto child process's env_array.
This allows the searching of history from a submodule's gitdir, rather
than from a working directory.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22 11:47:33 -08:00
Brandon Williams
74ed43711f grep: enable recurse-submodules to work on <tree> objects
Teach grep to recursively search in submodules when provided with a
<tree> object. This allows grep to search a submodule based on the state
of the submodule that is present in a commit of the super project.

When grep is provided with a <tree> object, the name of the object is
prefixed to all output.  In order to provide uniformity of output
between the parent and child processes the option `--parent-basename`
has been added so that the child can preface all of it's output with the
name of the parent's object instead of the name of the commit SHA1 of
the submodule. This changes output from the command
`git grep -e. -l --recurse-submodules HEAD` from:

      HEAD:file
      <commit sha1 of submodule>:sub/file

to:

      HEAD:file
      HEAD:sub/file

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22 11:47:33 -08:00
Brandon Williams
0281e487fd grep: optionally recurse into submodules
Allow grep to recognize submodules and recursively search for patterns in
each submodule.  This is done by forking off a process to recursively
call grep on each submodule.  The top level --super-prefix option is
used to pass a path to the submodule which can in turn be used to
prepend to output or in pathspec matching logic.

Recursion only occurs for submodules which have been initialized and
checked out by the parent project.  If a submodule hasn't been
initialized and checked out it is simply skipped.

In order to support the existing multi-threading infrastructure in grep,
output from each child process is captured in a strbuf so that it can be
later printed to the console in an ordered fashion.

To limit the number of theads that are created, each child process has
half the number of threads as its parents (minimum of 1), otherwise we
potentailly have a fork-bomb.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22 11:47:33 -08:00
Junio C Hamano
49d45de1e7 Merge branch 'jk/index-pack-wo-repo-from-stdin'
"git index-pack --stdin" needs an access to an existing repository,
but "git index-pack file.pack" to generate an .idx file that
corresponds to a packfile does not.

* jk/index-pack-wo-repo-from-stdin:
  index-pack: skip collision check when not in repository
  t: use nongit() function where applicable
  index-pack: complain when --stdin is used outside of a repo
  t5000: extract nongit function to test-lib-functions.sh
2016-12-21 14:55:03 -08:00
Junio C Hamano
fe05033407 Merge branch 'jk/quote-env-path-list-component'
A recent update to receive-pack to make it easier to drop garbage
objects made it clear that GIT_ALTERNATE_OBJECT_DIRECTORIES cannot
have a pathname with a colon in it (no surprise!), and this in turn
made it impossible to push into a repository at such a path.  This
has been fixed by introducing a quoting mechanism used when
appending such a path to the colon-separated list.

* jk/quote-env-path-list-component:
  t5615-alternate-env: double-quotes in file names do not work on Windows
  t5547-push-quarantine: run the path separator test on Windows, too
  tmp-objdir: quote paths we add to alternates
  alternates: accept double-quoted paths
2016-12-21 14:55:02 -08:00
Junio C Hamano
1123026f0b Merge branch 'vs/submodule-clone-nested-submodules-alternates'
"git clone --reference $there --recurse-submodules $super" has been
taught to guess repositories usable as references for submodules of
$super that are embedded in $there while making a clone of the
superproject borrow objects from $there; extend the mechanism to
also allow submodules of these submodules to borrow repositories
embedded in these clones of the submodules embedded in the clone of
the superproject.

* vs/submodule-clone-nested-submodules-alternates:
  submodule--helper: set alternateLocation for cloned submodules
2016-12-21 14:55:02 -08:00
Junio C Hamano
4fcc091198 Merge branch 'sb/sequencer-abort-safety'
Unlike "git am --abort", "git cherry-pick --abort" moved HEAD back
to where cherry-pick started while picking multiple changes, when
the cherry-pick stopped to ask for help from the user, and the user
did "git reset --hard" to a different commit in order to re-attempt
the operation.

* sb/sequencer-abort-safety:
  Revert "sequencer: remove useless get_dir() function"
  sequencer: remove useless get_dir() function
  sequencer: make sequencer abort safer
  t3510: test that cherry-pick --abort does not unsafely change HEAD
  am: change safe_to_abort()'s not rewinding error into a warning
  am: fix filename in safe_to_abort() error message
2016-12-21 14:55:01 -08:00
Johannes Sixt
5e74824fac t5615-alternate-env: double-quotes in file names do not work on Windows
Protect a recently added test case with !MINGW.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-21 14:01:19 -08:00
Mike Hommey
405d7f4af6 fast-import: properly fanout notes when tree is imported
In typical uses of fast-import, trees are inherited from a parent
commit. In that case, the tree_entry for the branch looks like:

  .versions[1].sha1 = $some_sha1
  .tree = <tree structure loaded from $some_sha1>

However, when trees are imported, rather than inherited, that is not the
case. One can import a tree with a filemodify command, replacing the
root tree object.

e.g.
  "M 040000 $some_sha1 \n"

In this case, the tree_entry for the branch looks like:

  .versions[1].sha1 = $some_sha1
  .tree = NULL

When adding new notes with the notemodify command, do_change_note_fanout
is called to get a notes count, and to do so, it loops over the
tree_entry->tree, but doesn't do anything when the tree is NULL.

In the latter case above, it means do_change_note_fanout thinks the tree
contains no notes, and new notes are added with no fanout.

Interestingly, do_change_note_fanout does check whether subdirectories
have a NULL .tree, in which case it uses load_tree(). Which means the
right behaviour happens when using the filemodify command to import
subdirectories.

This change makes do_change_note_fanount call load_tree() whenever the
tree_entry it is given has no tree loaded, making all cases handled
equally.

Signed-off-by: Mike Hommey <mh@glandium.org>
Reviewed-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-20 13:53:26 -08:00
Junio C Hamano
bc44f9332a t4201: make tests work with and without the MINGW prerequiste
Make sure the tests do not depend on the result of the previous
tests.  With MINGW prerequisite satisfied, a "reset to original and
rebuild" in an earlier test was skipped, resulting in different
history being tested with this and the next tests.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-20 12:31:01 -08:00
Brandon Williams
225e8bf778 push: add option to push only submodules
Teach push the --recurse-submodules=only option.  This enables push
to recursively push all unpushed submodules while leaving the
superproject unpushed.

This is a desirable feature in a scenario where updates to the
superproject are handled automatically by some other means, perhaps
a tool like Gerrit code review.  In this scenario, a developer could
make a change which spans multiple submodules and then push their
commits for code review.  Upon completion of the code review, their
commits can be accepted and applied to their respective submodules
while the code review tool can then automatically update the
superproject to the most recent SHA1 of each submodule.  This would
reduce the merge conflicts in the superproject that could occur if
multiple people are contributing to the same submodule.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-20 12:26:34 -08:00
Lars Schneider
862f9312b3 git-p4: add diff/merge properties to .gitattributes for GitLFS files
The `git lfs track` command generates a .gitattributes file with diff
and merge properties [1]. Set the same .gitattributes format for files
tracked with GitLFS in git-p4.

[1] https://github.com/git-lfs/git-lfs/blob/v1.5.3/commands/command_track.go#L121

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Reviewed-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-20 10:01:00 -08:00
Junio C Hamano
2d91cb7935 Merge branch 'sb/t3600-cleanup'
Code cleanup.

* sb/t3600-cleanup:
  t3600: slightly modernize style
  t3600: remove useless redirect
2016-12-19 14:45:40 -08:00
Junio C Hamano
2fb11ec6c1 Merge branch 'jc/pull-rebase-ff'
"git pull --rebase", when there is no new commits on our side since
we forked from the upstream, should be able to fast-forward without
invoking "git rebase", but it didn't.

* jc/pull-rebase-ff:
  pull: fast-forward "pull --rebase=true"
2016-12-19 14:45:38 -08:00
Junio C Hamano
101f3dc92a Merge branch 'ld/p4-worktree'
"git p4" didn't interact with the internal of .git directory
correctly in the modern "git-worktree"-enabled world.

* ld/p4-worktree:
  git-p4: support git worktrees
2016-12-19 14:45:37 -08:00
Junio C Hamano
95713ff4fb Merge branch 'jc/lock-report-on-error'
Git 2.11 had a minor regression in "merge --ff-only" that competed
with another process that simultanously attempted to update the
index. We used to explain what went wrong with an error message,
but the new code silently failed.  The error message has been
resurrected.

* jc/lock-report-on-error:
  lockfile: LOCK_REPORT_ON_ERROR
  hold_locked_index(): align error handling with hold_lockfile_for_update()
  wt-status: implement opportunisitc index update correctly
2016-12-19 14:45:35 -08:00
Junio C Hamano
06cd5a1e01 Merge branch 'nd/rebase-forget'
"git rebase" learned "--quit" option, which allows a user to
remove the metadata left by an earlier "git rebase" that was
manually aborted without using "git rebase --abort".

* nd/rebase-forget:
  rebase: add --quit to cleanup rebase, leave everything else untouched
2016-12-19 14:45:35 -08:00
Junio C Hamano
f008159fc2 Merge branch 'jk/trailers-placeholder-in-pretty'
In addition to %(subject), %(body), "log --pretty=format:..."
learned a new placeholder %(trailers).

* jk/trailers-placeholder-in-pretty:
  ref-filter: add support to display trailers as part of contents
  pretty: add %(trailers) format for displaying trailers of a commit message
2016-12-19 14:45:34 -08:00
Junio C Hamano
3aead1cad7 Merge branch 'ak/commit-only-allow-empty'
"git commit --allow-empty --only" (no pathspec) with dirty index
ought to be an acceptable way to create a new commit that does not
change any paths, but it was forbidden, perhaps because nobody
needed it so far.

* ak/commit-only-allow-empty:
  commit: remove 'Clever' message for --only --amend
  commit: make --only --allow-empty work without paths
2016-12-19 14:45:34 -08:00
Junio C Hamano
afe0e2a391 Merge branch 'da/difftool-dir-diff-fix'
"git difftool --dir-diff" had a minor regression when started from
a subdirectory, which has been fixed.

* da/difftool-dir-diff-fix:
  difftool: fix dir-diff index creation when in a subdirectory
2016-12-19 14:45:33 -08:00
Junio C Hamano
c89606fa90 Merge branch 'jb/diff-no-index-no-abbrev'
"git diff --no-index" did not take "--no-abbrev" option.

* jb/diff-no-index-no-abbrev:
  diff: handle --no-abbrev in no-index case
2016-12-19 14:45:33 -08:00
Junio C Hamano
db09f21bbd Merge branch 'jk/stash-disable-renames-internally'
When diff.renames configuration is on (and with Git 2.9 and later,
it is enabled by default, which made it worse), "git stash"
misbehaved if a file is removed and another file with a very
similar content is added.

* jk/stash-disable-renames-internally:
  stash: prefer plumbing over git-diff
2016-12-19 14:45:33 -08:00
Junio C Hamano
8a2882f23e Merge branch 'jk/http-walker-limit-redirect-2.9'
Transport with dumb http can be fooled into following foreign URLs
that the end user does not intend to, especially with the server
side redirects and http-alternates mechanism, which can lead to
security issues.  Tighten the redirection and make it more obvious
to the end user when it happens.

* jk/http-walker-limit-redirect-2.9:
  http: treat http-alternates like redirects
  http: make redirects more obvious
  remote-curl: rename shadowed options variable
  http: always update the base URL for redirects
  http: simplify update_url_from_redirect
2016-12-19 14:45:32 -08:00
Junio C Hamano
73e494f862 Merge branch 'nd/for-each-ref-ignore-case'
"git branch --list" and friends learned "--ignore-case" option to
optionally sort branches and tags case insensitively.

* nd/for-each-ref-ignore-case:
  tag, branch, for-each-ref: add --ignore-case for sorting and filtering
2016-12-19 14:45:31 -08:00
Junio C Hamano
0f30315ba1 Merge branch 'sb/unpack-trees-grammofix'
* sb/unpack-trees-grammofix:
  unpack-trees: fix grammar for untracked files in directories
2016-12-19 14:45:31 -08:00
Junio C Hamano
63d6a9c962 Merge branch 'ls/t0021-fixup'
* ls/t0021-fixup:
  t0021: minor filter process test cleanup
2016-12-19 14:45:30 -08:00
Junio C Hamano
1749053d02 Merge branch 'jc/renormalize-merge-kill-safer-crlf'
Fix a corner case in merge-recursive regression that crept in
during 2.10 development cycle.

* jc/renormalize-merge-kill-safer-crlf:
  convert: git cherry-pick -Xrenormalize did not work
  merge-recursive: handle NULL in add_cacheinfo() correctly
  cherry-pick: demonstrate a segmentation fault
2016-12-19 14:45:30 -08:00
Junio C Hamano
8b0db484e1 Merge branch 'jt/use-trailer-api-in-commands'
Commands that operate on a log message and add lines to the trailer
blocks, such as "format-patch -s", "cherry-pick (-x|-s)", and
"commit -s", have been taught to use the logic of and share the
code with "git interpret-trailer".

* jt/use-trailer-api-in-commands:
  sequencer: use trailer's trailer layout
  trailer: have function to describe trailer layout
  trailer: avoid unnecessary splitting on lines
  commit: make ignore_non_trailer take buf/len
  trailer: be stricter in parsing separators
2016-12-19 14:45:29 -08:00
George Vanburgh
9943e5b979 git-p4: fix multi-path changelist empty commits
When importing from multiple perforce paths - we may attempt to
import a changelist that contains files from two (or more) of these
depot paths. Currently, this results in multiple git commits - one
containing the changes, and the other(s) as empty commit(s). This
behavior was introduced in commit 1f90a64891 ("git-p4: reduce number
of server queries for fetches", 2015-12-19).

Reproduction Steps:

  1. Have a git repo cloned from a perforce repo using multiple
     depot paths (e.g. //depot/foo and //depot/bar).

  2. Submit a single change to the perforce repo that makes changes
     in both //depot/foo and //depot/bar.

  3. Run "git p4 sync" to sync the change from #2.

Change is synced as multiple commits, one for each depot path that
was affected.

Using a set, instead of a list inside p4ChangesForPaths() ensures
that each changelist is unique to the returned list, and therefore
only a single commit is generated for each changelist.

Reported-by: James Farwell <jfarwell@vmware.com>
Signed-off-by: George Vanburgh <gvanburgh@bloomberg.net>
Reviewed-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-19 10:04:21 -08:00
Luke Diamand
df8a9e86db git-p4: avoid crash adding symlinked directory
When submitting to P4, if git-p4 came across a symlinked
directory, then during the generation of the submit diff, it would
try to open it as a normal file and fail.

Spot symlinks (of any type) and output a description of the symlink
instead.

Add a test case.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-18 13:19:40 -08:00
Lars Schneider
7eeda8b821 t0021: fix flaky test
t0021.15 creates files, adds them to the index, and commits them. All
this usually happens in a test run within the same second and Git cannot
know if the files have been changed between `add` and `commit`.  Thus,
Git has to run the clean filter in both operations. Sometimes these
invocations spread over two different seconds and Git can infer that the
files were not changed between `add` and `commit` based on their
modification timestamp. The test would fail as it expects the filter
invocation. Remove this expectation to make the test stable.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-18 13:01:20 -08:00
Junio C Hamano
796bd3bb2a Merge branch 'ls/p4-empty-file-on-lfs'
"git p4" LFS support was broken when LFS stores an empty blob.

* ls/p4-empty-file-on-lfs:
  git-p4: fix empty file processing for large file system backend GitLFS
2016-12-16 15:27:49 -08:00
Junio C Hamano
031b5a9ad3 Merge branch 'ld/p4-update-shelve'
* ld/p4-update-shelve:
  git-p4: support updating an existing shelved changelist
2016-12-16 15:27:49 -08:00
Junio C Hamano
97c138fe4e Merge branch 'vk/p4-submit-shelve'
* vk/p4-submit-shelve:
  git-p4: allow submit to create shelved changelists.
2016-12-16 15:27:49 -08:00
Junio C Hamano
eb600866c3 Merge branch 'ak/lazy-prereq-mktemp'
Test code clean-up.

* ak/lazy-prereq-mktemp:
  t7610: clean up foo.XXXXXX tmpdir
2016-12-16 15:27:49 -08:00
Junio C Hamano
2cf8c9053a Merge branch 'nd/worktree-list-fixup'
The output from "git worktree list" was made in readdir() order,
and was unstable.

* nd/worktree-list-fixup:
  worktree list: keep the list sorted
  worktree.c: get_worktrees() takes a new flag argument
  get_worktrees() must return main worktree as first item even on error
  worktree: reorder an if statement
  worktree.c: zero new 'struct worktree' on allocation
2016-12-16 15:27:48 -08:00
Junio C Hamano
12cf1135df Merge branch 'bw/push-dry-run'
"git push --dry-run --recurse-submodule=on-demand" wasn't
"--dry-run" in the submodules.

* bw/push-dry-run:
  push: fix --dry-run to not push submodules
  push: --dry-run updates submodules when --recurse-submodules=on-demand
2016-12-16 15:27:48 -08:00
Junio C Hamano
a616162909 Merge branch 'dt/empty-submodule-in-merge'
An empty directory in a working tree that can simply be nuked used
to interfere while merging or cherry-picking a change to create a
submodule directory there, which has been fixed..

* dt/empty-submodule-in-merge:
  submodules: allow empty working-tree dirs in merge/cherry-pick
2016-12-16 15:27:47 -08:00
Junio C Hamano
598119d3cd Merge branch 'jk/rev-parse-symbolic-parents-fix'
"git rev-parse --symbolic" failed with a more recent notation like
"HEAD^-1" and "HEAD^!".

* jk/rev-parse-symbolic-parents-fix:
  rev-parse: fix parent shorthands with --symbolic
2016-12-16 15:27:47 -08:00
Jeff King
03f40829ad shortlog: test and document --committer option
This puts the final touches on the feature added by
fbfda15fb8 (shortlog: group by committer information,
2016-10-11).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-16 09:39:10 -08:00
Jeff King
a3c45d1260 t: use nongit() function where applicable
Many tests want to run a command outside of any git repo;
with the nongit() function this is now a one-liner. It saves
a few lines, but more importantly, it's immediately obvious
what the code is trying to accomplish.

This doesn't convert every such case in the test suite; it
just covers those that want to do a one-off command. Other
cases, such as the ones in t4035, are part of a larger
scheme of outside-repo files, and it's less confusing for
them to stay consistent with the surrounding tests.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-16 09:31:00 -08:00
Jeff King
7176a31444 index-pack: complain when --stdin is used outside of a repo
The index-pack builtin is marked as RUN_SETUP_GENTLY,
because it's perfectly fine to index a pack in the
filesystem outside of any repository. However, --stdin mode
will write the result to the object database, which does not
make sense outside of a repository. Doing so creates a bogus
".git" directory with nothing in it except the newly-created
pack and its index.

Instead, let's flag this as an error and abort.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-16 09:29:43 -08:00
Jeff King
de95302a4c t5000: extract nongit function to test-lib-functions.sh
This function abstracts the idea of running a command
outside of any repository (which is slightly awkward to do
because even if you make a non-repo directory, git may keep
walking up outside of the trash directory). There are
several scripts that use the same technique, so let's make
the function available for everyone.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-16 09:29:16 -08:00
Jeff King
abcbdc0389 http: respect protocol.*.allow=user for http-alternates
The http-walker may fetch the http-alternates (or
alternates) file from a remote in order to find more
objects. This should count as a "not from the user" use of
the protocol. But because we implement the redirection
ourselves and feed the new URL to curl, it will use the
CURLOPT_PROTOCOLS rules, not the more restrictive
CURLOPT_REDIR_PROTOCOLS.

The ideal solution would be for each curl request we make to
know whether or not is directly from the user or part of an
alternates redirect, and then set CURLOPT_PROTOCOLS as
appropriate. However, that would require plumbing that
information through all of the various layers of the http
code.

Instead, let's check the protocol at the source: when we are
parsing the remote http-alternates file. The only downside
is that if there's any mismatch between what protocol we
think it is versus what curl thinks it is, it could violate
the policy.

To address this, we'll make the parsing err on the picky
side, and only allow protocols that it can parse
definitively. So for example, you can't elude the "http"
policy by asking for "HTTP://", even though curl might
handle it; we would reject it as unknown. The only unsafe
case would be if you have a URL that starts with "http://"
but curl interprets as another protocol. That seems like an
unlikely failure mode (and we are still protected by our
base CURLOPT_PROTOCOL setting, so the worst you could do is
trigger one of https, ftp, or ftps).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-15 09:29:13 -08:00
Brandon Williams
a768a02265 transport: add from_user parameter to is_transport_allowed
Add a from_user parameter to is_transport_allowed() to allow http to be
able to distinguish between protocol restrictions for redirects versus
initial requests.  CURLOPT_REDIR_PROTOCOLS can now be set differently
from CURLOPT_PROTOCOLS to disallow use of protocols with the "user"
policy in redirects.

This change allows callers to query if a transport protocol is allowed,
given that the caller knows that the protocol is coming from the user
(1) or not from the user (0) such as redirects in libcurl.  If unknown a
-1 should be provided which falls back to reading
`GIT_PROTOCOL_FROM_USER` to determine if the protocol came from the
user.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-15 09:29:13 -08:00
Brandon Williams
f1762d772e transport: add protocol policy config option
Previously the `GIT_ALLOW_PROTOCOL` environment variable was used to
specify a whitelist of protocols to be used in clone/fetch/push
commands.  This patch introduces new configuration options for more
fine-grained control for allowing/disallowing protocols.  This also has
the added benefit of allowing easier construction of a protocol
whitelist on systems where setting an environment variable is
non-trivial.

Now users can specify a policy to be used for each type of protocol via
the 'protocol.<name>.allow' config option.  A default policy for all
unconfigured protocols can be set with the 'protocol.allow' config
option.  If no user configured default is made git will allow known-safe
protocols (http, https, git, ssh, file), disallow known-dangerous
protocols (ext), and have a default policy of `user` for all other
protocols.

The supported policies are `always`, `never`, and `user`.  The `user`
policy can be used to configure a protocol to be usable when explicitly
used by a user, while disallowing it for commands which run
clone/fetch/push commands without direct user intervention (e.g.
recursive initialization of submodules).  Commands which can potentially
clone/fetch/push from untrusted repositories without user intervention
can export `GIT_PROTOCOL_FROM_USER` with a value of '0' to prevent
protocols configured to the `user` policy from being used.

Fix remote-ext tests to use the new config to allow the ext
protocol to be tested.

Based on a patch by Jeff King <peff@peff.net>

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-15 09:29:13 -08:00
Brandon Williams
85e4205365 lib-proto-disable: variable name fix
The test_proto function assigns the positional parameters to named
variables, but then still refers to "$desc" as "$1". Using $desc is
more readable and less error-prone.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 15:18:51 -08:00
Vasco Almeida
0539d5e6d5 i18n: add--interactive: mark patch prompt for translation
Mark prompt message assembled in place for translation, unfolding each
use case for each entry in the %patch_modes hash table.

Previously, this script relied on whether $patch_mode was set to run the
command patch_update_cmd() or show status and loop the main loop. Now,
it uses $cmd to indicate we must run patch_update_cmd() and $patch_mode
is used to tell which flavor of the %patch_modes are we on.  This is
introduced in order to be able to mark and unfold the message prompt
knowing in which context we are.

The tracking of context was done previously by point %patch_mode_flavour
hash table to the correct entry of %patch_modes, focusing only on value
of %patch_modes. Now, we are also interested in the key ('staged',
'stash', 'checkout_head', ...).

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 11:00:05 -08:00
Vasco Almeida
c4a85c3b8e i18n: add--interactive: mark plural strings
Mark plural strings for translation.  Unfold each action case in one
entire sentence.

Pass new keyword for xgettext to extract.

Update test to include new subroutine __n() for plural strings handling.

Update documentation to include a description of the new __n()
subroutine.

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 11:00:05 -08:00
Chris Packham
042e290da6 merge: ensure '--abort' option takes no arguments
Like '--continue', the '--abort' option doesn't make any sense with
other options or arguments to 'git merge' so ensure that none are
present.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 10:02:04 -08:00
Chris Packham
367ff69428 merge: add '--continue' option as a synonym for 'git commit'
Teach 'git merge' the --continue option which allows 'continuing' a
merge by completing it. The traditional way of completing a merge after
resolving conflicts is to use 'git commit'. Now with commands like 'git
rebase' and 'git cherry-pick' having a '--continue' option adding such
an option to 'git merge' presents a consistent UI.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 10:02:04 -08:00
Luke Diamand
378f7be1e7 git-p4: support git worktrees
git-p4 would attempt to find the git directory using
its own specific code, which did not know about git
worktrees.

Rework it to use "git rev-parse --git-dir" instead.

Add test cases for worktree usage and specifying
git directory via --git-dir and $GIT_DIR.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-13 16:04:53 -08:00
Johannes Sixt
eaa76de0df t5547-push-quarantine: run the path separator test on Windows, too
To perform the test case on Windows in a way that corresponds to the
POSIX version, inject the semicolon in a directory name.

Typically, an absolute POSIX style path, such as the one in $PWD, is
translated into a Windows style path by bash when it invokes git.exe.
However, the presence of the semicolon suppresses this translation;
but the untranslated POSIX style path is useless for git.exe.
Therefore, instead of $PWD pass the Windows style path that $(pwd)
produces.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-13 11:15:10 -08:00
Stefan Beller
9e189f1a5c t3600: slightly modernize style
Remove the space between redirection and file name.
Also remove unnecessary invocations of subshells, such as

	(cd submod &&
		echo X >untracked
	) &&

as there is no point of having the shell for functional purposes.
In case of a single Git command use the `-C` option to let Git cd into
the directory.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-12 23:11:57 -08:00
Stefan Beller
f6f8586140 submodule: add absorb-git-dir function
When a submodule has its git dir inside the working dir, the submodule
support for checkout that we plan to add in a later patch will fail.

Add functionality to migrate the git directory to be absorbed
into the superprojects git directory.

The newly added code in this patch is structured such that other areas of
Git can also make use of it. The code in the submodule--helper is a mere
wrapper and option parser for the function
`absorb_git_dir_into_superproject`, that takes care of embedding the
submodules git directory into the superprojects git dir. That function
makes use of the more abstract function for this use case
`relocate_gitdir`, which can be used by e.g. the worktree code eventually
to move around a git directory.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-12 15:15:07 -08:00
Jeff King
aae2ae4f74 tmp-objdir: quote paths we add to alternates
Commit 722ff7f87 (receive-pack: quarantine objects until
pre-receive accepts, 2016-10-03) regressed pushes to
repositories with colon (or semi-colon in Windows in them)
because it adds the repository's main object directory to
GIT_ALTERNATE_OBJECT_DIRECTORIES. The receiver interprets
the colon as a delimiter, not as part of the path, and
index-pack is unable to find objects which it needs to
resolve deltas.

The previous commit introduced a quoting mechanism for the
alternates list; let's use it here to cover this case. We'll
avoid quoting when we can, though. This alternate setup is
also used when calling hooks, so it's possible that the user
may call older git implementations which don't understand
the quoting mechanism. By quoting only when necessary, this
setup will continue to work unless the user _also_ has a
repository whose path contains the delimiter.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-12 15:10:46 -08:00
Jeff King
cf3c635210 alternates: accept double-quoted paths
We read lists of alternates from objects/info/alternates
files (delimited by newline), as well as from the
GIT_ALTERNATE_OBJECT_DIRECTORIES environment variable
(delimited by colon or semi-colon, depending on the
platform).

There's no mechanism for quoting the delimiters, so it's
impossible to specify an alternate path that contains a
colon in the environment, or one that contains a newline in
a file. We've lived with that restriction for ages because
both alternates and filenames with colons are relatively
rare, and it's only a problem when the two meet. But since
722ff7f87 (receive-pack: quarantine objects until
pre-receive accepts, 2016-10-03), which builds on the
alternates system, every push causes the receiver to set
GIT_ALTERNATE_OBJECT_DIRECTORIES internally.

It would be convenient to have some way to quote the
delimiter so that we can represent arbitrary paths.

The simplest thing would be an escape character before a
quoted delimiter (e.g., "\:" as a literal colon). But that
creates a backwards compatibility problem: any path which
uses that escape character is now broken, and we've just
shifted the problem. We could choose an unlikely escape
character (e.g., something from the non-printable ASCII
range), but that's awkward to use.

Instead, let's treat names as unquoted unless they begin
with a double-quote, in which case they are interpreted via
our usual C-stylke quoting rules. This also breaks
backwards-compatibility, but in a smaller way: it only
matters if your file has a double-quote as the very _first_
character in the path (whereas an escape character is a
problem anywhere in the path).  It's also consistent with
many other parts of git, which accept either a bare pathname
or a double-quoted one, and the sender can choose to quote
or not as required.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-12 15:10:43 -08:00
Junio C Hamano
9b519609a6 Merge branch 'jk/alt-odb-cleanup' into jk/quote-env-path-list-component
* jk/alt-odb-cleanup:
  alternates: re-allow relative paths from environment
2016-12-12 15:09:57 -08:00
Vitaly "_Vi" Shukela
bf03b79047 submodule--helper: set alternateLocation for cloned submodules
In 31224cbdc7 (clone: recursive and reference option triggers
submodule alternates, 2016-08-17) a mechanism was added to
have submodules referenced.  It did not address _nested_
submodules, however.

This patch makes all not just the root repository, but also
all submodules (recursively) have submodule.alternateLocation
and submodule.alternateErrorStrategy configured, making Git
search for possible alternates for nested submodules as well.

As submodule's alternate target does not end in .git/objects
(rather .git/modules/qqqqqq/objects), this alternate target
path restriction for in add_possible_reference_from_superproject
relates from "*.git/objects" to just */objects".

New tests have been added to t7408-submodule-reference.

Signed-off-by: Vitaly _Vi Shukela <vi0oss@gmail.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-12 09:56:52 -08:00
Jacob Keller
b1d31c8954 ref-filter: add support to display trailers as part of contents
Add %(trailers) and %(contents:trailers) to display the trailers as
interpreted by trailer_info_get. Update documentation and add a test for
the new feature.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-11 13:58:41 -08:00
Jacob Keller
d9f31fbfe9 pretty: add %(trailers) format for displaying trailers of a commit message
Recent patches have expanded on the trailers.c code and we have the
builtin commant git-interpret-trailers which can be used to add or
modify trailer lines. However, there is no easy way to simply display
the trailers of a commit message.

Add support for %(trailers) format modifier which will use the
trailer_info_get() calls to read trailers in an identical way as git
interpret-trailers does. Use a long format option instead of a short
name so that future work can more easily unify ref-filter and pretty
formats.

Add documentation and tests for the same.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-11 13:58:41 -08:00
Nguyễn Thái Ngọc Duy
9512177b68 rebase: add --quit to cleanup rebase, leave everything else untouched
There are occasions when you decide to abort an in-progress rebase and
move on to do something else but you forget to do "git rebase --abort"
first. Or the rebase has been in progress for so long you forgot about
it. By the time you realize that (e.g. by starting another rebase)
it's already too late to retrace your steps. The solution is normally

    rm -r .git/<some rebase dir>

and continue with your life. But there could be two different
directories for <some rebase dir> (and it obviously requires some
knowledge of how rebase works), and the ".git" part could be much
longer if you are not at top-dir, or in a linked worktree. And
"rm -r" is very dangerous to do in .git, a mistake in there could
destroy object database or other important data.

Provide "git rebase --quit" for this use case, mimicking a precedent
that is "git cherry-pick --quit".

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-11 13:51:41 -08:00
Stefan Beller
6f94351b0a test-lib-functions.sh: teach test_commit -C <dir>
Specifically when setting up submodule tests, it comes in handy if
we can create commits in repositories that are not at the root of
the tested trash dir. Add "-C <dir>" similar to gits -C parameter
that will perform the operation in the given directory.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 14:52:57 -08:00
Stephan Beyer
1e41229d96 sequencer: make sequencer abort safer
In contrast to "git am --abort", a sequencer abort did not check
whether the current HEAD is the one that is expected. This can lead
to loss of work (when not spotted and resolved using reflog before
the garbage collector chimes in).

This behavior is now changed by mimicking "git am --abort".  The
abortion is done but HEAD is not changed when the current HEAD is
not the expected HEAD.

A new file "sequencer/abort-safety" is added to save the expected
HEAD.

The new behavior is only active when --abort is invoked on multiple
picks. The problem does not occur for the single-pick case because
it is handled differently.

Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 14:50:45 -08:00
Stephan Beyer
aeebd98ebe t3510: test that cherry-pick --abort does not unsafely change HEAD
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 14:50:45 -08:00
Jack Bates
43d1948b7b diff: handle --no-abbrev in no-index case
There are two different places where the --no-abbrev option is parsed,
and two different places where SHA-1s are abbreviated. We normally parse
--no-abbrev with setup_revisions(), but in the no-index case, "git diff"
calls diff_opt_parse() directly, and diff_opt_parse() didn't handle
--no-abbrev until now. (It did handle --abbrev, however.) We normally
abbreviate SHA-1s with find_unique_abbrev(), but commit 4f03666 ("diff:
handle sha1 abbreviations outside of repository, 2016-10-20) recently
introduced a special case when you run "git diff" outside of a
repository.

setup_revisions() does also call diff_opt_parse(), but not for --abbrev
or --no-abbrev, which it handles itself. setup_revisions() sets
rev_info->abbrev, and later copies that to diff_options->abbrev. It
handles --no-abbrev by setting abbrev to zero. (This change doesn't
touch that.)

Setting abbrev to zero was broken in the outside-of-a-repository special
case, which until now resulted in a truly zero-length SHA-1, rather than
taking zero to mean do not abbreviate. The only way to trigger this bug,
however, was by running "git diff --raw" without either the --abbrev or
--no-abbrev options, because 1) without --raw it doesn't respect abbrev
(which is bizarre, but has been that way forever), 2) we silently clamp
--abbrev=0 to MINIMUM_ABBREV, and 3) --no-abbrev wasn't handled until
now.

The outside-of-a-repository case is one of three no-index cases. The
other two are when one of the files you're comparing is outside of the
repository you're in, and the --no-index option.

Signed-off-by: Jack Bates <jack@nottheoilrig.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 14:40:30 -08:00
SZEDER Gábor
51acfa9db5 versioncmp: use earliest-longest contained suffix to determine sorting order
When comparing tagnames, it is possible that a tagname contains more
than one of the configured prerelease suffixes around the first
different character.  After fixing a bug in the previous commit such a
tagname is sorted according to the contained suffix which comes first
in the configuration.  This is, however, not quite the right thing to
do in the following corner cases:

  1.   $ git -c versionsort.suffix=-bar
             -c versionsort.suffix=-foo-baz
             -c versionsort.suffix=-foo-bar
             tag -l --sort=version:refname 'v1*'
       v1.0-foo-bar
       v1.0-foo-baz

     The suffix of the tagname 'v1.0-foo-bar' is clearly '-foo-bar',
     so it should be listed last.  However, as it also contains '-bar'
     around the first different character, it is listed first instead,
     because that '-bar' suffix comes first the configuration.

  2. One of the configured suffixes starts with the other:

       $ git -c versionsort.prereleasesuffix=-pre \
             -c versionsort.prereleasesuffix=-prerelease \
             tag -l --sort=version:refname 'v2*'
       v2.0-prerelease1
       v2.0-pre1
       v2.0-pre2

     Here the tagname 'v2.0-prerelease1' should be the last.  When
     comparing 'v2.0-pre1' and 'v2.0-prerelease1' the first different
     characters are '1' and 'r', respectively.  Since this first
     different character must be part of the configured suffix, the
     '-pre' suffix is not recognized in the first tagname.  OTOH, the
     '-prerelease' suffix is properly recognized in
     'v2.0-prerelease1', thus it is listed first.

Improve version sort in these corner cases, and

  - look for a configured prerelease suffix containing the first
    different character or ending right before it, so the '-pre'
    suffixes are recognized in case (2).  This also means that
    when comparing tagnames 'v2.0-pre1' and 'v2.0-pre2',
    swap_prereleases() would find the '-pre' suffix in both, but then
    it will return "undecided" and the caller will do the right thing
    by sorting based in '1' and '2'.

  - If the tagname contains more than one suffix, then give precedence
    to the contained suffix that starts at the earliest offset in the
    tagname to address (1).

  - If there are more than one suffixes starting at that earliest
    position, then give precedence to the longest of those suffixes,
    thus ensuring that in (2) the tagname 'v2.0-prerelease1' won't be
    sorted based on the '-pre' suffix.

Add tests for these corner cases and adjust the documentation
accordingly.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 11:11:57 -08:00
SZEDER Gábor
b8231660fa versioncmp: cope with common part overlapping with prerelease suffix
Version sort with prerelease reordering sometimes puts tagnames in the
wrong order, when the common part of two compared tagnames overlaps
with the leading character(s) of one or more configured prerelease
suffixes.  Note the position of "v2.1.0-beta-1":

  $ git -c versionsort.prereleaseSuffix=-beta \
        tag -l --sort=version:refname v2.1.*
  v2.1.0-beta-2
  v2.1.0-beta-3
  v2.1.0
  v2.1.0-RC1
  v2.1.0-RC2
  v2.1.0-beta-1
  v2.1.1
  v2.1.2

The reason is that when comparing a pair of tagnames, first
versioncmp() looks for the first different character in a pair of
tagnames, and then the swap_prereleases() helper function looks for a
configured prerelease suffix _starting at_ that character.  Thus, when
in the above example the sorting algorithm happens to compare the
tagnames "v2.1.0-beta-1" and "v2.1.0-RC2", swap_prereleases() tries to
match the suffix "-beta" against "beta-1" to no avail, and the two
tagnames erroneously end up being ordered lexicographically.

To fix this issue change swap_prereleases() to look for configured
prerelease suffixes _containing_ the position of that first different
character.

Care must be taken, when a configured suffix is longer than the
tagnames' common part up to the first different character, to avoid
reading memory before the beginning of the tagnames.  Add a test that
uses an exceptionally long prerelease suffix to check for this, in the
hope that in case of a regression the illegal memory access causes a
segfault in 'git tag' on one of the commonly used platforms (the test
happens to pass successfully on my Linux system with the safety check
removed), or at least makes valgrind complain.

Under some circumstances it's possible that more than one prerelease
suffixes can be found in the same tagname around that first different
character.  With this simple bugfix patch such a tagname is sorted
according to the contained suffix that comes first in the
configuration for now.  This is less than ideal in some cases, and the
following patch will take care of those.

Reported-by: Leho Kraav <leho@conversionready.com>
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 11:11:57 -08:00
SZEDER Gábor
0c1b4878de t7004-tag: add version sort tests to show prerelease reordering issues
Version sort with prerelease reordering sometimes puts tagnames in the
wrong order, when the common part of two compared tagnames ends with
the leading character(s) of one or more configured prerelease
suffixes.  Add tests that demonstrate these issues.

The unrelated '--format should list tags as per format given' test
later uses tags matching the same prefix as the version sort tests,
thus was affected by the new tags added for the new tests in this
patch.  Change that test to perform its checks on a different set of
tags.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 11:11:57 -08:00
SZEDER Gábor
9ffda48f53 t7004-tag: use test_config helper
... instead of setting and then manually unsetting configuration
variables, on one occasion even outside the test_expect_success block.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 11:11:57 -08:00
SZEDER Gábor
eba286e310 t7004-tag: delete unnecessary tags with test_when_finished
The '--force is moot with a non-existing tag name' test creates two
new tags, which are then deleted right after the test is finished,
outside the test_expect_success block, allowing 'git tag -d's output to
pollute the test output.

Use test_when_finished to delete those tags.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 11:11:57 -08:00
David Aguilar
853e10c197 difftool: fix dir-diff index creation when in a subdirectory
9ec26e7977 (difftool: fix argument handling in subdirs, 2016-07-18)
corrected how path arguments are handled in a subdirectory, but
it introduced a regression in how entries outside of the
subdirectory are handled by dir-diff.

When preparing the right-side of the diff we only include the
changed paths in the temporary area.

The left side of the diff is constructed from a temporary
index that is built from the same set of changed files, but it
was being constructed from within the subdirectory.  This is a
problem because the indexed paths are toplevel-relative, and
thus they were not getting added to the index.

Teach difftool to chdir to the toplevel of the repository before
preparing its temporary indexes.  This ensures that all of the
toplevel-relative paths are valid.

Add test cases to more thoroughly exercise this scenario.

Reported-by: Frank Becker <fb@mooflu.com>
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 10:28:00 -08:00
Junio C Hamano
b3e83cc752 hold_locked_index(): align error handling with hold_lockfile_for_update()
Callers of the hold_locked_index() function pass 0 when they want to
prepare to write a new version of the index file without wishing to
die or emit an error message when the request fails (e.g. somebody
else already held the lock), and pass 1 when they want the call to
die upon failure.

This option is called LOCK_DIE_ON_ERROR by the underlying lockfile
API, and the hold_locked_index() function translates the paramter to
LOCK_DIE_ON_ERROR when calling the hold_lock_file_for_update().

Replace these hardcoded '1' with LOCK_DIE_ON_ERROR and stop
translating.  Callers other than the ones that are replaced with
this change pass '0' to the function; no behaviour change is
intended with this patch.

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

Among the callers of hold_locked_index() that passes 0:

 - diff.c::refresh_index_quietly() at the end of "git diff" is an
   opportunistic update; it leaks the lockfile structure but it is
   just before the program exits and nobody should care.

 - builtin/describe.c::cmd_describe(),
   builtin/commit.c::cmd_status(),
   sequencer.c::read_and_refresh_cache() are all opportunistic
   updates and they are OK.

 - builtin/update-index.c::cmd_update_index() takes a lock upfront
   but we may end up not needing to update the index (i.e. the
   entries may be fully up-to-date), in which case we do not need to
   issue an error upon failure to acquire the lock.  We do diagnose
   and die if we indeed need to update, so it is OK.

 - wt-status.c::require_clean_work_tree() IS BUGGY.  It asks
   silence, does not check the returned value.  Compare with
   callsites like cmd_describe() and cmd_status() to notice that it
   is wrong to call update_index_if_able() unconditionally.
2016-12-07 11:31:59 -08:00
Jeff King
9d4e28ead5 stash: prefer plumbing over git-diff
When creating a stash, we need to look at the diff between
the working tree and HEAD, and do so using the git-diff
porcelain.  Because git-diff enables porcelain config like
renames by default, this causes at least one problem. The
--name-only format will not mention the source side of a
rename, meaning we will fail to stash a deletion that is
part of a rename.

We could fix that case by passing --no-renames, but this is
a symptom of a larger problem. We should be using the
diff-index plumbing here, which does not have renames
enabled by default, and also does not respect any
potentially confusing config options.

Reported-by: Matthew Patey <matthew.patey2167@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-06 14:16:53 -08:00
Jeff King
cb4d2d35c4 http: treat http-alternates like redirects
The previous commit made HTTP redirects more obvious and
tightened up the default behavior. However, there's another
way for a server to ask a git client to fetch arbitrary
content: by having an http-alternates file (or a regular
alternates file, which is used as a backup).

Similar to the HTTP redirect case, a malicious server can
claim to have refs pointing at object X, return a 404 when
the client asks for X, but point to some other URL via
http-alternates, which the client will transparently fetch.
The end result is that it looks from the user's perspective
like the objects came from the malicious server, as the
other URL is not mentioned at all.

Worse, because we feed the new URL to curl ourselves, the
usual protocol restrictions do not kick in (neither curl's
default of disallowing file://, nor the protocol
whitelisting in f4113cac0 (http: limit redirection to
protocol-whitelist, 2015-09-22).

Let's apply the same rules here as we do for HTTP redirects.
Namely:

  - unless http.followRedirects is set to "always", we will
    not follow remote redirects from http-alternates (or
    alternates) at all

  - set CURLOPT_PROTOCOLS alongside CURLOPT_REDIR_PROTOCOLS
    restrict ourselves to a known-safe set and respect any
    user-provided whitelist.

  - mention alternate object stores on stderr so that the
    user is aware another source of objects may be involved

The first item may prove to be too restrictive. The most
common use of alternates is to point to another path on the
same server. While it's possible for a single-server
redirect to be an attack, it takes a fairly obscure setup
(victim and evil repository on the same host, host speaks
dumb http, and evil repository has access to edit its own
http-alternates file).

So we could make the checks more specific, and only cover
cross-server redirects. But that means parsing the URLs
ourselves, rather than letting curl handle them. This patch
goes for the simpler approach. Given that they are only used
with dumb http, http-alternates are probably pretty rare.
And there's an escape hatch: the user can allow redirects on
a specific server by setting http.<url>.followRedirects to
"always".

Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-06 12:32:48 -08:00
Jeff King
50d3413740 http: make redirects more obvious
We instruct curl to always follow HTTP redirects. This is
convenient, but it creates opportunities for malicious
servers to create confusing situations. For instance,
imagine Alice is a git user with access to a private
repository on Bob's server. Mallory runs her own server and
wants to access objects from Bob's repository.

Mallory may try a few tricks that involve asking Alice to
clone from her, build on top, and then push the result:

  1. Mallory may simply redirect all fetch requests to Bob's
     server. Git will transparently follow those redirects
     and fetch Bob's history, which Alice may believe she
     got from Mallory. The subsequent push seems like it is
     just feeding Mallory back her own objects, but is
     actually leaking Bob's objects. There is nothing in
     git's output to indicate that Bob's repository was
     involved at all.

     The downside (for Mallory) of this attack is that Alice
     will have received Bob's entire repository, and is
     likely to notice that when building on top of it.

  2. If Mallory happens to know the sha1 of some object X in
     Bob's repository, she can instead build her own history
     that references that object. She then runs a dumb http
     server, and Alice's client will fetch each object
     individually. When it asks for X, Mallory redirects her
     to Bob's server. The end result is that Alice obtains
     objects from Bob, but they may be buried deep in
     history. Alice is less likely to notice.

Both of these attacks are fairly hard to pull off. There's a
social component in getting Mallory to convince Alice to
work with her. Alice may be prompted for credentials in
accessing Bob's repository (but not always, if she is using
a credential helper that caches). Attack (1) requires a
certain amount of obliviousness on Alice's part while making
a new commit. Attack (2) requires that Mallory knows a sha1
in Bob's repository, that Bob's server supports dumb http,
and that the object in question is loose on Bob's server.

But we can probably make things a bit more obvious without
any loss of functionality. This patch does two things to
that end.

First, when we encounter a whole-repo redirect during the
initial ref discovery, we now inform the user on stderr,
making attack (1) much more obvious.

Second, the decision to follow redirects is now
configurable. The truly paranoid can set the new
http.followRedirects to false to avoid any redirection
entirely. But for a more practical default, we will disallow
redirects only after the initial ref discovery. This is
enough to thwart attacks similar to (2), while still
allowing the common use of redirects at the repository
level. Since c93c92f30 (http: update base URLs when we see
redirects, 2013-09-28) we re-root all further requests from
the redirect destination, which should generally mean that
no further redirection is necessary.

As an escape hatch, in case there really is a server that
needs to redirect individual requests, the user can set
http.followRedirects to "true" (and this can be done on a
per-server basis via http.*.followRedirects config).

Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-06 12:32:48 -08:00
Jeff King
6628eb41db http: always update the base URL for redirects
If a malicious server redirects the initial ref
advertisement, it may be able to leak sha1s from other,
unrelated servers that the client has access to. For
example, imagine that Alice is a git user, she has access to
a private repository on a server hosted by Bob, and Mallory
runs a malicious server and wants to find out about Bob's
private repository.

Mallory asks Alice to clone an unrelated repository from her
over HTTP. When Alice's client contacts Mallory's server for
the initial ref advertisement, the server issues an HTTP
redirect for Bob's server. Alice contacts Bob's server and
gets the ref advertisement for the private repository. If
there is anything to fetch, she then follows up by asking
the server for one or more sha1 objects. But who is the
server?

If it is still Mallory's server, then Alice will leak the
existence of those sha1s to her.

Since commit c93c92f30 (http: update base URLs when we see
redirects, 2013-09-28), the client usually rewrites the base
URL such that all further requests will go to Bob's server.
But this is done by textually matching the URL. If we were
originally looking for "http://mallory/repo.git/info/refs",
and we got pointed at "http://bob/other.git/info/refs", then
we know that the right root is "http://bob/other.git".

If the redirect appears to change more than just the root,
we punt and continue to use the original server. E.g.,
imagine the redirect adds a URL component that Bob's server
will ignore, like "http://bob/other.git/info/refs?dummy=1".

We can solve this by aborting in this case rather than
silently continuing to use Mallory's server. In addition to
protecting from sha1 leakage, it's arguably safer and more
sane to refuse a confusing redirect like that in general.
For example, part of the motivation in c93c92f30 is
avoiding accidentally sending credentials over clear http,
just to get a response that says "try again over https". So
even in a non-malicious case, we'd prefer to err on the side
of caution.

The downside is that it's possible this will break a
legitimate but complicated server-side redirection scheme.
The setup given in the newly added test does work, but it's
convoluted enough that we don't need to care about it. A
more plausible case would be a server which redirects a
request for "info/refs?service=git-upload-pack" to just
"info/refs" (because it does not do smart HTTP, and for some
reason really dislikes query parameters).  Right now we
would transparently downgrade to dumb-http, but with this
patch, we'd complain (and the user would have to set
GIT_SMART_HTTP=0 to fetch).

Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-06 12:32:48 -08:00
Lars Schneider
c6b0831c9c docs: warn about possible '=' in clean/smudge filter process values
A pathname value in a clean/smudge filter process "key=value" pair can
contain the '=' character (introduced in edcc858). Make the user aware
of this issue in the docs, add a corresponding test case, and fix the
issue in filter process value parser of the example implementation in
contrib.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-06 11:29:52 -08:00
Nguyễn Thái Ngọc Duy
3bb16a8bf2 tag, branch, for-each-ref: add --ignore-case for sorting and filtering
This options makes sorting ignore case, which is great when you have
branches named bug-12-do-something, Bug-12-do-some-more and
BUG-12-do-what and want to group them together. Sorting externally may
not be an option because we lose coloring and column layout from
git-branch and git-tag.

The same could be said for filtering, but it's probably less important
because you can always go with the ugly pattern [bB][uU][gG]-* if you're
desperate.

You can't have case-sensitive filtering and case-insensitive sorting (or
the other way around) with this though. For branch and tag, that should
be no problem. for-each-ref, as a plumbing, might want finer control.
But we can always add --{filter,sort}-ignore-case when there is a need
for it.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 14:59:29 -08:00
Lars Schneider
9c48b4fb23 t0021: minor filter process test cleanup
Remove superfluous .gitignore pattern and invalid '.' in `git commit`
calls.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 14:59:03 -08:00
Lars Schneider
d5eb3cf5e7 git-p4: fix empty file processing for large file system backend GitLFS
If git-p4 tried to store an empty file in GitLFS then it crashed while
parsing the pointer file:

  oid = re.search(r'^oid \w+:(\w+)', pointerFile, re.MULTILINE).group(1)
  AttributeError: 'NoneType' object has no attribute 'group'

This happens because GitLFS does not create a pointer file for an empty
file. Teach git-p4 this behavior to fix the problem and add a test case.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 14:57:33 -08:00
Luke Diamand
46c609e9ff git-p4: support updating an existing shelved changelist
Adds new option "--update-shelve CHANGELIST" which updates
an existing shelved changelist.

The original changelist must have been created by the current user.

This allows workflow something like:

   hack hack hack
   git commit
   git p4 submit --shelve
   $mail interested parties about shelved changelist
   make corrections
   git commit --amend
   git p4 submit --update-shelve $CHANGELIST
   $mail interested parties about shelved changelist
   etc

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 12:55:01 -08:00
Andreas Krey
319d835240 commit: make --only --allow-empty work without paths
--only is implied when paths are present, and required
them unless --amend. But with --allow-empty it should
be allowed as well - it is the only way to create an
empty commit in the presence of staged changes.

Signed-off-by: Andreas Krey <a.krey@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 12:41:06 -08:00
Stefan Beller
8954bd76eb t3600: remove useless redirect
In the next line the `actual` is overwritten again, so no need to redirect
the output of checkout into that file.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 12:19:30 -08:00
Stefan Beller
584f99c87b unpack-trees: fix grammar for untracked files in directories
Noticed-by: David Turner <dturner@twosigma.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Reviewed-by: David Turner <dturner@twosigma.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 12:17:02 -08:00
Junio C Hamano
b365dafe23 Merge branch 'tb/t0027-raciness-fix' into jc/renormalize-merge-kill-safer-crlf
* tb/t0027-raciness-fix:
  convert: Correct NNO tests and missing `LF will be replaced by CRLF`
2016-12-01 10:34:42 -08:00
Junio C Hamano
33b842a1e9 pull: fast-forward "pull --rebase=true"
"git pull --rebase" always runs "git rebase" after fetching the
commit to serve as the new base, even when the new base is a
descendant of the current HEAD, i.e. we haven't done any work.

In such a case, we can instead fast-forward to the new base without
invoking the rebase process.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-29 14:40:16 -08:00
Stefan Beller
619acfc78c submodule add: extend force flag to add existing repos
Currently the force flag in `git submodule add` takes care of possibly
ignored files or when a name collision occurs.

However there is another situation where submodule add comes in handy:
When you already have a gitlink recorded, but no configuration was
done (i.e. no .gitmodules file nor any entry in .git/config) and you
want to generate these config entries. For this situation allow
`git submodule add` to proceed if there is already a submodule at the
given path in the index.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-29 14:25:09 -08:00
Jonathan Tan
967dfd4d56 sequencer: use trailer's trailer layout
Make sequencer use trailer.c's trailer layout definition, as opposed to
parsing the footer by itself. This makes "commit -s", "cherry-pick -x",
and "format-patch --signoff" consistent with trailer, allowing
non-trailer lines and multiple-line trailers in trailer blocks under
certain conditions, and therefore suppressing the extra newline in those
cases.

Consistency with trailer extends to respecting trailer configs.  Tests
have been included to show that.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-29 14:22:18 -08:00
Junio C Hamano
91207f3784 Merge branch 'nd/test-helpers' into maint
Update to the test framework made in 2.9 timeframe broke running
the tests under valgrind, which has been fixed.

* nd/test-helpers:
  valgrind: support test helpers
2016-11-29 13:28:00 -08:00
Junio C Hamano
25e298d2c9 Merge branch 'as/merge-attr-sleep' into maint
Fix for a racy false-positive test failure.

* as/merge-attr-sleep:
  t6026: clarify the point of "kill $(cat sleep.pid)"
  t6026: ensure that long-running script really is
  Revert "t6026-merge-attr: don't fail if sleep exits early"
  Revert "t6026-merge-attr: ensure that the merge driver was called"
  t6026-merge-attr: ensure that the merge driver was called
  t6026-merge-attr: don't fail if sleep exits early
2016-11-29 13:27:56 -08:00
Junio C Hamano
a3f2781dd0 Merge branch 'mm/send-email-cc-cruft-after-address' into maint
"git send-email" attempts to pick up valid e-mails from the
trailers, but people in real world write non-addresses there, like
"Cc: Stable <add@re.ss> # 4.8+", which broke the output depending
on the availability and vintage of Mail::Address perl module.

* mm/send-email-cc-cruft-after-address:
  Git.pm: add comment pointing to t9000
  t9000-addresses: update expected results after fix
  parse_mailboxes: accept extra text after <...> address
2016-11-29 13:27:55 -08:00
Jeff King
fa3142c919 t7610: clean up foo.XXXXXX tmpdir
The lazy prereq for MKTEMP uses "mktemp -t" to see if
mergetool's internal mktemp call will be able to run. But
unlike the call inside mergetool, we do not ever bother to
clean up the result, and the /tmp of git developers will
slowly fill up with "foo.XXXXXX" directories as they run the
test suite over and over.  Let's clean up the directory
after we've verified its creation.

Note that we don't use test_when_finished here, and instead
just make rmdir part of the &&-chain. We should only remove
something that we're confident we just created. A failure in
the middle of the chain either means there's nothing to
clean up, or we are very confused and should err on the side
of caution.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-29 11:00:38 -08:00
Vinicius Kursancew
b34fa5777d git-p4: allow submit to create shelved changelists.
Add a --shelve command line argument which invokes p4 shelve instead
of submitting changes. After shelving the changes are reverted from the
p4 workspace.

Signed-off-by: Vinicius Kursancew <viniciusalexandre@gmail.com>
Reviewed-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-29 10:59:01 -08:00
Nguyễn Thái Ngọc Duy
4df1d4d466 worktree list: keep the list sorted
It makes it easier to write tests for. But it should also be good for
the user since locating a worktree by eye would be easier once they
notice this.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-28 13:18:51 -08:00
Nguyễn Thái Ngọc Duy
a234563a3b get_worktrees() must return main worktree as first item even on error
This is required by git-worktree.txt, stating that the main worktree is
the first line (especially in --porcelain mode when we can't just change
behavior at will).

There's only one case when get_worktrees() may skip main worktree, when
parse_ref() fails. Update the code so that we keep first item as main
worktree and return something sensible in this case:

 - In user-friendly mode, since we're not constraint by anything,
   returning "(error)" should do the job (we already show "(detached
   HEAD)" which is not machine-friendly). Actually errors should be
   printed on stderr by parse_ref() (*)

 - In plumbing mode, we do not show neither 'bare', 'detached' or
   'branch ...', which is possible by the format description if I read
   it right.

Careful readers may realize that when the local variable "head_ref" in
get_main_worktree() is emptied, add_head_info() will do nothing to
wt->head_sha1. But that's ok because head_sha1 is zero-ized in the
previous patch.

(*) Well, it does not. But it's supposed to be a stop gap implementation
    until we can reuse refs code to parse "ref: " stuff in HEAD, from
    resolve_refs_unsafe(). Now may be the time since refs refactoring is
    mostly done.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-28 13:18:51 -08:00
Johannes Schindelin
55e9f0e5c9 merge-recursive: handle NULL in add_cacheinfo() correctly
1335d76e45 ("merge: avoid "safer crlf" during recording of merge
results", 2016-07-08) tried to split make_cache_entry() call made
with CE_MATCH_REFRESH into a call to make_cache_entry() without one,
followed by a call to add_cache_entry(), refresh_cache() and another
add_cache_entry() as needed.  However the conversion was botched in
that it forgot that refresh_cache() can return NULL, which was
handled correctly in make_cache_entry() but in the updated code.

This fixes https://github.com/git-for-windows/git/issues/952

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-28 11:00:04 -08:00
Johannes Schindelin
05f2dfb965 cherry-pick: demonstrate a segmentation fault
In https://github.com/git-for-windows/git/issues/952, a complicated
scenario was described that leads to a segmentation fault in
cherry-pick.

It boils down to a certain code path involving a renamed file that is
dirty, for which `refresh_cache_entry()` returns `NULL`, and that
`NULL` not being handled properly.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-28 10:46:28 -08:00
Junio C Hamano
c34a7daad7 Merge branch 'jc/setup-cleanup-fix'
"git archive" and "git mailinfo" stopped reading from local
configuration file with a recent update.

* jc/setup-cleanup-fix:
  archive: read local configuration
  mailinfo: read local configuration
2016-11-23 11:23:17 -08:00
Junio C Hamano
bd53f38d52 Merge branch 'js/rebase-i-commentchar-fix'
"git rebase -i" did not work well with core.commentchar
configuration variable for two reasons, both of which have been
fixed.

* js/rebase-i-commentchar-fix:
  rebase -i: handle core.commentChar=auto
  stripspace: respect repository config
  rebase -i: highlight problems with core.commentchar
2016-11-23 11:23:17 -08:00
Junio C Hamano
48e9ad5ef3 Merge branch 'jc/for-each-ref-head-segfault-fix'
Using a %(HEAD) placeholder in "for-each-ref --format=" option
caused the command to segfault when on an unborn branch.

* jc/for-each-ref-head-segfault-fix:
  for-each-ref: do not segv with %(HEAD) on an unborn branch
2016-11-23 11:23:16 -08:00
Brandon Williams
0301c821c5 push: fix --dry-run to not push submodules
Teach push to respect the --dry-run option when configured to
recursively push submodules 'on-demand'.  This is done by passing the
--dry-run flag to the child process which performs a push for a
submodules when performing a dry-run.

In order to preserve good user experience, the additional check for
unpushed submodules is skipped during a dry-run when
--recurse-submodules=on-demand.  The check is skipped because the submodule
pushes were performed as dry-runs and this check would always fail as the
submodules would still need to be pushed.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-23 08:39:14 -08:00
Brandon Williams
1aa7365840 push: --dry-run updates submodules when --recurse-submodules=on-demand
This patch adds a test to illustrate how push run with --dry-run doesn't
actually perform a dry-run when push is configured to push submodules
on-demand.  Instead all submodules which need to be pushed are actually
pushed to their remotes while any updates for the superproject are
performed as a dry-run.  This is a bug and not the intended behaviour of
a dry-run.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-23 08:37:45 -08:00
Stefan Beller
73c293bb6c submodule-config: rename commit_sha1 to treeish_name
It is also possible to pass in any treeish name to lookup a submodule
config. Make it clear by naming the variables accordingly. Looking up
a submodule config by tree hash will come in handy in a later patch.

Signed-off-by: Stefan Beller <sbeller@google.com>
Reviewed-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-22 14:43:03 -08:00
Junio C Hamano
eb0224c617 archive: read local configuration
Since b9605bc4f2 ("config: only read .git/config from configured
repos", 2016-09-12), we do not read from ".git/config" unless we
know we are in a repository.  "git archive" however didn't do the
repository discovery and instead relied on the old behaviour.

Teach the command to run a "gentle" version of repository discovery
so that local configuration variables are honoured.

[jc: stole tests from peff]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-22 13:55:20 -08:00
Junio C Hamano
3f0ec0687d mailinfo: read local configuration
Since b9605bc4f2 ("config: only read .git/config from configured
repos", 2016-09-12), we do not read from ".git/config" unless we
know we are in a repository.  "git mailinfo" however didn't do the
repository discovery and instead relied on the old behaviour.  This
was mostly OK because it was merely run as a helper program by other
porcelain scripts that first chdir's up to the root of the working
tree.

Teach the command to run a "gentle" version of repository discovery
so that local configuration variables like mailinfo.scissors are
honoured.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-22 13:13:16 -08:00
Johannes Schindelin
882cd23777 rebase -i: handle core.commentChar=auto
When 84c9dc2 (commit: allow core.commentChar=auto for character auto
selection, 2014-05-17) extended the core.commentChar functionality to
allow for the value 'auto', it forgot that rebase -i was already taught to
handle core.commentChar, and in turn forgot to let rebase -i handle that
new value gracefully.

Reported by Taufiq Hoven.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-21 11:00:41 -08:00
Johannes Schindelin
92068ae8bf stripspace: respect repository config
The way "git stripspace" reads the configuration was not quite
kosher, in that the code forgot to probe for a possibly existing
repository (note: stripspace is designed to be usable outside the
repository as well).  It read .git/config only when it was run from
the top-level of the working tree by accident.  A recent change
b9605bc4f2 ("config: only read .git/config from configured repos",
2016-09-12) stopped reading the repository-local configuration file
".git/config" unless the repository discovery process is done, so
that .git/config is never read even when run from the top-level,
exposing the old bug more.

When rebasing interactively with a commentChar defined in the
current repository's config, the help text at the bottom of the edit
script potentially used an incorrect comment character. This was not
only funny-looking, but also resulted in tons of warnings like this
one:

	Warning: the command isn't recognized in the following line
	 - #

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-21 11:00:38 -08:00
Johannes Schindelin
6645838845 rebase -i: highlight problems with core.commentchar
The interactive rebase does not currently play well with
core.commentchar. Let's add some tests to highlight those problems
that will be fixed in the remainder of the series.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-21 11:00:17 -08:00
Junio C Hamano
84679d470d for-each-ref: do not segv with %(HEAD) on an unborn branch
The code to flip between "*" and " " prefixes depending on what
branch is checked out used in --format='%(HEAD)' did not consider
that HEAD may resolve to an unborn branch and dereferenced a NULL.

This will become a lot easier to trigger as the codepath will be
used to reimplement "git branch [--list]" in the future.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-18 15:21:12 -08:00
David Turner
f8edeaa05d upload-pack: optionally allow fetching any sha1
It seems a little silly to do a reachabilty check in the case where we
trust the user to access absolutely everything in the repository.

Also, it's racy in a distributed system -- perhaps one server
advertises a ref, but another has since had a force-push to that ref,
and perhaps the two HTTP requests end up directed to these different
servers.

Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-18 13:06:14 -08:00
David Turner
296b847c0d remote-curl: don't hang when a server dies before any output
In the event that a HTTP server closes the connection after giving a
200 but before giving any packets, we don't want to hang forever
waiting for a response that will never come.  Instead, we should die
immediately.

One case where this happens is when attempting to fetch a dangling
object by its object name.  In this case, the server dies before
sending any data.  Prior to this patch, fetch-pack would wait for
data from the server, and remote-curl would wait for fetch-pack,
causing a deadlock.

Despite this patch, there is other possible malformed input that could
cause the same deadlock (e.g. a half-finished pktline, or a pktline but
no trailing flush).  There are a few possible solutions to this:

1. Allowing remote-curl to tell fetch-pack about the EOF (so that
fetch-pack could know that no more data is coming until it says
something else).  This is tricky because an out-of-band signal would
be required, or the http response would have to be re-framed inside
another layer of pkt-line or something.

2. Make remote-curl understand some of the protocol.  It turns out
that in addition to understanding pkt-line, it would need to watch for
ack/nak.  This is somewhat fragile, as information about the protocol
would end up in two places.  Also, pkt-lines which are already at the
length limit would need special handling.

Both of these solutions would require a fair amount of work, whereas
this hack is easy and solves at least some of the problem.

Still to do: it would be good to give a better error message
than "fatal: The remote end hung up unexpectedly".

Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-18 13:05:46 -08:00
David Turner
5423d2e700 submodules: allow empty working-tree dirs in merge/cherry-pick
When a submodule is being merged or cherry-picked into a working
tree that already contains a corresponding empty directory, do not
record a conflict.

One situation where this bug appears is:

- Commit 1 adds a submodule
- Commit 2 removes that submodule and re-adds it into a subdirectory
       (sub1 to sub1/sub1).
- Commit 3 adds an unrelated file.

Now the user checks out commit 1 (first deinitializing the submodule),
and attempts to cherry-pick commit 3.  Previously, this would fail,
because the incoming submodule sub1/sub1 would falsely conflict with
the empty sub1 directory.

This patch ignores the empty sub1 directory, fixing the bug.  We only
ignore the empty directory if the object being emplaced is a
submodule, which expects an empty directory.

Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-17 20:25:54 -08:00
Jeff King
a2e7b04c44 rev-parse: fix parent shorthands with --symbolic
The try_parent_shorthands() function shows each parent via
show_rev(). We pass the correct parent sha1, but our "name"
parameter still points at the original refname. So asking
for a regular rev-parse works fine (it prints the sha1s),
but asking for the symbolic name gives nonsense like:

    $ git rev-parse --symbolic HEAD^-1
    HEAD
    ^HEAD

which is always an empty set of commits. Asking for "^!" is
likewise broken, with the added bonus that its prints ^HEAD
for _each_ parent. And "^@" just prints HEAD repeatedly.

Arguably it would be correct to just pass NULL as the name
here, and always get the parent expressed as a sha1. The
"--symbolic" documentaton claims only "as close to the
original input as possible", and we certainly fallback to
sha1s where necessary. But it's pretty easy to generate a
symbolic name on the fly from the original.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-16 11:12:15 -08:00
Junio C Hamano
8de7eeb54b compression: unify pack.compression configuration parsing
There are three codepaths that use a variable whose name is
pack_compression_level to affect how objects and deltas sent to a
packfile is compressed.  Unlike zlib_compression_level that controls
the loose object compression, however, this variable was static to
each of these codepaths.  Two of them read the pack.compression
configuration variable, using core.compression as the default, and
one of them also allowed overriding it from the command line.

The other codepath in bulk-checkin did not pay any attention to the
configuration.

Unify the configuration parsing to git_default_config(), where we
implement the parsing of core.loosecompression and core.compression
and make the former override the latter, by moving code to parse
pack.compression and also allow core.compression to give default to
this variable.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-15 21:16:22 -08:00
Junio C Hamano
b18f6a0066 Merge branch 'ls/filter-process'
Test portability improvements and optimization for an
already-graduated topic.

* ls/filter-process:
  t0021: remove debugging cruft
2016-11-11 13:56:30 -08:00
Junio C Hamano
7f2a3921fb Merge branch 'js/pwd-var-vs-pwd-cmd-fix'
Last minute fixes to two fixups merged to 'master' recently.

* js/pwd-var-vs-pwd-cmd-fix:
  t0021, t5615: use $PWD instead of $(pwd) in PATH-like shell variables
2016-11-11 13:56:30 -08:00
Junio C Hamano
f5a8ad4c5a Merge branch 'as/merge-attr-sleep'
Fix for a racy false-positive test failure.

* as/merge-attr-sleep:
  t6026: clarify the point of "kill $(cat sleep.pid)"
  t6026: ensure that long-running script really is
  Revert "t6026-merge-attr: don't fail if sleep exits early"
  Revert "t6026-merge-attr: ensure that the merge driver was called"
  t6026-merge-attr: ensure that the merge driver was called
  t6026-merge-attr: don't fail if sleep exits early
2016-11-11 13:56:30 -08:00
Junio C Hamano
a0d8b60da8 t0021: remove debugging cruft
The redirection of the standard error stream to a temporary file is
a leftover cruft during debugging.  Remove it.

Besides, it is reported by folks on the Windows that the test is
flaky with this redirection; somebody gets confused and this
merely-redirected-to file gets marked as delete-pending by git.exe
and makes it finish with a non-zero exit status when "git checkout"
finishes.  Windows folks may want to figure that one out, but for
the purpose of this test, it shouldn't become a show-stopper.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-11 13:09:24 -08:00
Johannes Sixt
fdf4f6c79b t6026: clarify the point of "kill $(cat sleep.pid)"
We lengthened the time the leftover process sleeps in the previous
commit to make sure it will be there while 'git merge' runs and
finishes.  It therefore needs to be killed before leaving the test.
And it needs to be killed even when 'git merge' fails, so it has to
be triggered via test_when_finished mechanism.

Explain all that in a large comment, and move the use site of
test_when_finished to immediately before 'git merge' invocation,
where the process is spawned.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-11 12:53:21 -08:00
Johannes Sixt
71dd50472d t0021, t5615: use $PWD instead of $(pwd) in PATH-like shell variables
We have to use $PWD instead of $(pwd) because on Windows the latter
would add a C: style path to bash's Unix-style $PATH variable, which
becomes confused by the colon after the drive letter. ($PWD is a
Unix-style path.)

In the case of GIT_ALTERNATE_OBJECT_DIRECTORIES, bash on Windows
assembles a Unix-style path list with the colon as separators. It
converts the value to a Windows-style path list with the semicolon as
path separator when it forwards the variable to git.exe. The same
confusion happens when bash's original value is contaminated with
Windows style paths.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-11 10:54:46 -08:00
Johannes Schindelin
a7d6bcc329 t6026: ensure that long-running script really is
When making sure that background tasks are cleaned up in 5babb5b
(t6026-merge-attr: clean up background process at end of test case,
2016-09-07), we considered to let the background task sleep longer, just
to be certain that it will still be running when we want to kill it
after the test.

Sadly, the assumption appears not to hold true that the test case passes
quickly enough to kill the background task within a second.

Simply increase it to an hour. No system can be possibly slow enough to
make above-mentioned assumption incorrect.

Reported by Andreas Schwab.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-10 15:57:06 -08:00
Junio C Hamano
b36b716cf6 Revert "t6026-merge-attr: don't fail if sleep exits early"
This reverts commit 734fde2d71.

The point of the test is that the stray process was still running
when 'git merge' did its thing through its completion, so a failure
to "kill" it means we didn't give a condition to the test to trigger
a possible future breakage.  Appending "|| :" to the "kill" is
sweeping a test-bug under the rug.
2016-11-10 15:55:13 -08:00
Junio C Hamano
3b03097d66 Revert "t6026-merge-attr: ensure that the merge driver was called"
This reverts commit c1e0dc59bd.

We are not interested in the stray process in the merge driver
started; we want it to be still around.
2016-11-10 15:54:12 -08:00
Junio C Hamano
0538b84027 Merge branch 'jk/alt-odb-cleanup'
Fix a corner-case regression in a topic that graduated during the
v2.11 cycle.

* jk/alt-odb-cleanup:
  alternates: re-allow relative paths from environment
2016-11-10 13:17:30 -08:00
Junio C Hamano
7b2c338cae Merge branch 'jk/filter-process-fix'
Test portability improvements and cleanups for t0021.

* jk/filter-process-fix:
  t0021: fix filehandle usage on older perl
  t0021: use $PERL_PATH for rot13-filter.pl
  t0021: put $TEST_ROOT in $PATH
  t0021: use write_script to create rot13 shell script
2016-11-10 13:17:30 -08:00
Junio C Hamano
81cf0b6c7e Merge branch 'ls/filter-process'
Test portability improvements and optimization for an
already-graduated topic.

* ls/filter-process:
  t0021: compute file size with a single process instead of a pipeline
  t0021: expect more variations in the output of uniq -c
2016-11-10 13:17:30 -08:00
Andreas Schwab
c1e0dc59bd t6026-merge-attr: ensure that the merge driver was called
Explicitly check for the existence of the pid file to test that the
merge driver was actually called.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-10 11:20:56 -08:00
Andreas Schwab
734fde2d71 t6026-merge-attr: don't fail if sleep exits early
Commit 5babb5bdb3 ("t6026-merge-attr: clean up background process at end
of test case") added a kill command to clean up after the test, but this
can fail if the sleep command exits before the cleanup is executed.
Ignore the error from the kill command.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Jeff King <peff@peff.net>
2016-11-08 15:29:24 -05:00
Jeff King
37a95862c6 alternates: re-allow relative paths from environment
Commit 670c359da (link_alt_odb_entry: handle normalize_path
errors, 2016-10-03) regressed the handling of relative paths
in the GIT_ALTERNATE_OBJECT_DIRECTORIES variable. It's not
entirely clear this was ever meant to work, but it _has_
worked for several years, so this commit restores the
original behavior.

When we get a path in GIT_ALTERNATE_OBJECT_DIRECTORIES, we
add it the path to the list of alternate object directories
as if it were found in objects/info/alternates, but with one
difference: we do not provide the link_alt_odb_entry()
function with a base for relative paths. That function
doesn't turn it into an absolute path, and we end up feeding
the relative path to the strbuf_normalize_path() function.

Most relative paths break out of the top-level directory
(e.g., "../foo.git/objects"), and thus normalizing fails.
Prior to 670c359da, we simply ignored the error, and due to
the way normalize_path_copy() was implemented it happened to
return the original path in this case. We then accessed the
alternate objects using this relative path.

By storing the relative path in the alt_odb list, the path
is relative to wherever we happen to be at the time we do an
object lookup. That means we look from $GIT_DIR in a bare
repository, and from the top of the worktree in a non-bare
repository.

If this were being designed from scratch, it would make
sense to pick a stable location (probably $GIT_DIR, or even
the object directory) and use that as the relative base,
turning the result into an absolute path.  However, given
the history, at this point the minimal fix is to match the
pre-670c359da behavior.

We can do this simply by ignoring the error when we have no
relative base and using the original value (which we now
reliably have, thanks to strbuf_normalize_path()).

That still leaves us with a relative path that foils our
duplicate detection, and may act strangely if we ever
chdir() later in the process. We could solve that by storing
an absolute path based on getcwd(). That may be a good
future direction; for now we'll do just the minimum to fix
the regression.

The new t5615 script demonstrates the fix in its final three
tests. Since we didn't have any tests of the alternates
environment variable at all, it also adds some tests of
absolute paths.

Reported-by: Bryan Turner <bturner@atlassian.com>
Signed-off-by: Jeff King <peff@peff.net>
2016-11-08 15:28:22 -05:00
Johannes Sixt
ec2e8b3da2 t0021: compute file size with a single process instead of a pipeline
Avoid unwanted coding patterns (prodigal use of pipelines), and in
particular a useless use of cat.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jeff King <peff@peff.net>
2016-11-08 15:26:40 -05:00
Johannes Sixt
038212c4c4 t0021: expect more variations in the output of uniq -c
Some versions of uniq -c write the count left-justified, other version
write it right-justified. Be prepared for both kinds.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jeff King <peff@peff.net>
2016-11-08 15:26:40 -05:00
Jeff King
4821494ebc t0021: fix filehandle usage on older perl
The rot13-filter.pl script calls methods on implicitly
defined filehandles (STDOUT, and the result of an open()
call).  Prior to perl 5.13, these methods are not
automatically loaded, and perl will complain with:

  Can't locate object method "flush" via package "IO::Handle"

Let's explicitly load IO::File (which inherits from
IO::Handle). That's more than we need for just "flush", but
matches what perl has done since:

  http://perl5.git.perl.org/perl.git/commit/15e6cdd91beb4cefae4b65e855d68cf64766965d

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-02 19:36:29 -07:00
Jeff King
f272696a35 t0021: use $PERL_PATH for rot13-filter.pl
The rot13-filter.pl script hardcodes "#!/usr/bin/perl", and
does not respect $PERL_PATH at all. That is a problem if the
system does not have perl at that path, or if it has a perl
that is too old to run a complicated script like the
rot13-filter (but PERL_PATH points to a more modern one).

We can fix this by using write_script() to create a new copy
of the script with the correct #!-line. In theory we could
move the whole script inside t0021-conversion.sh rather than
having it as an auxiliary file, but it's long enough that
it just makes things harder to read.

As a bonus, we can stop using the full path to the script in
the filter-process config we add (because the trash
directory is in our PATH). Not only is this shorter, but it
sidesteps any shell-quoting issues. The original was broken
when $TEST_DIRECTORY contained a space, because it was
interpolated in the outer script.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-02 19:36:29 -07:00
Jeff King
30030a36b6 t0021: put $TEST_ROOT in $PATH
We create a rot13.sh script in the trash directory, but need
to call it by its full path when we have moved our cwd to
another directory. Let's just put $TEST_ROOT in our $PATH so
that the script is always found.

This is a minor convenience for rot13.sh, but will be a
major one when we switch rot13-filter.pl to a script in the
same directory, as it means we will not have to deal with
shell quoting inside the filter-process config.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-02 19:36:29 -07:00
Jeff King
cbb6707b11 t0021: use write_script to create rot13 shell script
This avoids us fooling around with $SHELL_PATH and the
executable bit ourselves.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-02 19:36:29 -07:00
Dennis Kaarsemaker
b284495e93 push: test pushing ambiguously named branches
Signed-off-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-31 14:11:22 -07:00
Junio C Hamano
ab3ad63c9a Merge branch 'nd/test-helpers'
Update to the test framework made in 2.9 timeframe broke running
the tests under valgrind, which has been fixed.

* nd/test-helpers:
  valgrind: support test helpers
2016-10-31 13:15:27 -07:00
Junio C Hamano
9fa1f902bf Merge branch 'aw/numbered-stash'
The user always has to say "stash@{$N}" when naming a single
element in the default location of the stash, i.e. reflogs in
refs/stash.  The "git stash" command learned to accept "git stash
apply 4" as a short-hand for "git stash apply stash@{4}".

* aw/numbered-stash:
  stash: allow stashes to be referenced by index only
2016-10-31 13:15:22 -07:00
Junio C Hamano
cabb79d8c1 Merge branch 'jt/trailer-with-cruft'
Update "interpret-trailers" machinery and teaches it that people in
real world write all sorts of crufts in the "trailer" that was
originally designed to have the neat-o "Mail-Header: like thing"
and nothing else.

* jt/trailer-with-cruft:
  trailer: support values folded to multiple lines
  trailer: forbid leading whitespace in trailers
  trailer: allow non-trailers in trailer block
  trailer: clarify failure modes in parse_trailer
  trailer: make args have their own struct
  trailer: streamline trailer item create and add
  trailer: use list.h for doubly-linked list
  trailer: improve const correctness
2016-10-31 13:15:22 -07:00
Junio C Hamano
dbaa6bdce2 Merge branch 'ls/filter-process'
The smudge/clean filter API expect an external process is spawned
to filter the contents for each path that has a filter defined.  A
new type of "process" filter API has been added to allow the first
request to run the filter for a path to spawn a single process, and
all filtering need is served by this single process for multiple
paths, reducing the process creation overhead.

* ls/filter-process:
  contrib/long-running-filter: add long running filter example
  convert: add filter.<driver>.process option
  convert: prepare filter.<driver>.process option
  convert: make apply_filter() adhere to standard Git error handling
  pkt-line: add functions to read/write flush terminated packet streams
  pkt-line: add packet_write_gently()
  pkt-line: add packet_flush_gently()
  pkt-line: add packet_write_fmt_gently()
  pkt-line: extract set_packet_header()
  pkt-line: rename packet_write() to packet_write_fmt()
  run-command: add clean_on_exit_handler
  run-command: move check_pipe() from write_or_die to run_command
  convert: modernize tests
  convert: quote filter names in error messages
2016-10-31 13:15:21 -07:00
Junio C Hamano
020222ef4d Merge branch 'pb/test-parse-options-expect' into maint
Test clean-up.

* pb/test-parse-options-expect:
  t0040: convert all possible tests to use `test-parse-options --expect`
2016-10-28 09:01:24 -07:00
Junio C Hamano
b943a213fe Merge branch 'jk/tap-verbose-fix' into maint
The Travis CI configuration we ship ran the tests with --verbose
option but this risks non-TAP output that happens to be "ok" to be
misinterpreted as TAP signalling a test that passed.  This resulted
in unnecessary failure.  This has been corrected by introducing a
new mode to run our tests in the test harness to send the verbose
output separately to the log file.

* jk/tap-verbose-fix:
  test-lib: bail out when "-v" used under "prove"
  travis: use --verbose-log test option
  test-lib: add --verbose-log option
  test-lib: handle TEST_OUTPUT_DIRECTORY with spaces
2016-10-28 09:01:21 -07:00
Junio C Hamano
dce97d6ec7 Merge branch 'tg/add-chmod+x-fix' into maint
A hot-fix for a test added by a recent topic that went to both
'master' and 'maint' already.

* tg/add-chmod+x-fix:
  t3700: fix broken test under !SANITY
2016-10-28 09:01:19 -07:00
Junio C Hamano
39000e8499 Merge branch 'jk/fetch-quick-tag-following' into maint
When fetching from a remote that has many tags that are irrelevant
to branches we are following, we used to waste way too many cycles
when checking if the object pointed at by a tag (that we are not
going to fetch!) exists in our repository too carefully.

* jk/fetch-quick-tag-following:
  fetch: use "quick" has_sha1_file for tag following
2016-10-28 09:01:17 -07:00
Junio C Hamano
96ec83ce52 Merge branch 'jk/merge-base-fork-point-without-reflog' into maint
"git rebase" immediately after "git clone" failed to find the fork
point from the upstream.

* jk/merge-base-fork-point-without-reflog:
  merge-base: handle --fork-point without reflog
2016-10-28 09:01:17 -07:00
Junio C Hamano
a5406125cc Merge branch 'dk/worktree-dup-checkout-with-bare-is-ok' into maint
In a worktree connected to a repository elsewhere, created via "git
worktree", "git checkout" attempts to protect users from confusion
by refusing to check out a branch that is already checked out in
another worktree.  However, this also prevented checking out a
branch, which is designated as the primary branch of a bare
reopsitory, in a worktree that is connected to the bare
repository.  The check has been corrected to allow it.

* dk/worktree-dup-checkout-with-bare-is-ok:
  worktree: allow the main brach of a bare repository to be checked out
2016-10-28 09:01:16 -07:00
Junio C Hamano
42a9c6c0e2 Merge branch 'jk/ref-symlink-loop' into maint
A stray symbolic link in $GIT_DIR/refs/ directory could make name
resolution loop forever, which has been corrected.

* jk/ref-symlink-loop:
  files_read_raw_ref: prevent infinite retry loops in general
  files_read_raw_ref: avoid infinite loop on broken symlinks
2016-10-28 09:01:15 -07:00
René Scharfe
28fab7b23d valgrind: support test helpers
Tests run with --valgrind call git commands through a wrapper script
that invokes valgrind on them.  This script (valgrind.sh) is in turn
invoked through symlinks created for each command in t/valgrind/bin/.

Since e6e7530d (test helpers: move test-* to t/helper/ subdirectory)
these symlinks have been broken for test helpers -- they point to the
old locations in the root of the build directory.  Fix that by teaching
the code for creating the links about the new location of the binaries,
and do the same in the wrapper script to allow it to find its payload.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-27 23:33:53 -07:00
Junio C Hamano
650360210a Merge branch 'nd/ita-empty-commit'
When new paths were added by "git add -N" to the index, it was
enough to circumvent the check by "git commit" to refrain from
making an empty commit without "--allow-empty".  The same logic
prevented "git status" to show such a path as "new file" in the
"Changes not staged for commit" section.

* nd/ita-empty-commit:
  commit: don't be fooled by ita entries when creating initial commit
  commit: fix empty commit creation when there's no changes but ita entries
  diff: add --ita-[in]visible-in-index
  diff-lib: allow ita entries treated as "not yet exist in index"
2016-10-27 14:58:50 -07:00
Junio C Hamano
cca3be6ea1 Merge branch 'js/prepare-sequencer'
Update of the sequencer codebase to make it reusable to reimplement
"rebase -i" continues.

* js/prepare-sequencer: (27 commits)
  sequencer: mark all error messages for translation
  sequencer: start error messages consistently with lower case
  sequencer: quote filenames in error messages
  sequencer: mark action_name() for translation
  sequencer: remove overzealous assumption in rebase -i mode
  sequencer: teach write_message() to append an optional LF
  sequencer: refactor write_message() to take a pointer/length
  sequencer: roll back lock file if write_message() failed
  sequencer: stop releasing the strbuf in write_message()
  sequencer: left-trim lines read from the script
  sequencer: support cleaning up commit messages
  sequencer: support amending commits
  sequencer: allow editing the commit message on a case-by-case basis
  sequencer: introduce a helper to read files written by scripts
  sequencer: prepare for rebase -i's commit functionality
  sequencer: remember the onelines when parsing the todo file
  sequencer: get rid of the subcommand field
  sequencer: avoid completely different messages for different actions
  sequencer: strip CR from the todo script
  sequencer: completely revamp the "todo" script parsing
  ...
2016-10-27 14:58:50 -07:00
Junio C Hamano
65aaa29f7d Merge branch 'sb/submodule-ignore-trailing-slash'
A minor regression fix for "git submodule".

* sb/submodule-ignore-trailing-slash:
  t0060: sidestep surprising path mangling results on Windows
  submodule: ignore trailing slash in relative url
  submodule: ignore trailing slash on superproject URL
2016-10-27 14:58:49 -07:00
Jeff King
4ce742fc9c test-*-cache-tree: setup git dir
These test helper programs access the index, but do not ever
setup_git_directory(), meaning we just blindly looked in
".git/index". This happened to work for the purposes of our
tests (which do not run from subdirectories, nor in
non-repos), but it's a bad habit.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-26 13:30:51 -07:00
Junio C Hamano
3b1e135b87 Merge branch 'ex/deprecate-empty-pathspec-as-match-all'
An empty string used as a pathspec element has always meant
'everything matches', but it is too easy to write a script that
finds a path to remove in $path and run 'git rm "$paht"', which
ends up removing everything.  Start warning about this use of an
empty string used for 'everything matches' and ask users to use a
more explicit '.' for that instead.

The hope is that existing users will not mind this change, and
eventually the warning can be turned into a hard error, upgrading
the deprecation into removal of this (mis)feature.

* ex/deprecate-empty-pathspec-as-match-all:
  pathspec: warn on empty strings as pathspec
2016-10-26 13:14:56 -07:00
Junio C Hamano
f4db874d9a Merge branch 'jk/tap-verbose-fix'
The Travis CI configuration we ship ran the tests with --verbose
option but this risks non-TAP output that happens to be "ok" to be
misinterpreted as TAP signalling a test that passed.  This resulted
in unnecessary failure.  This has been corrected by introducing a
new mode to run our tests in the test harness to send the verbose
output separately to the log file.

* jk/tap-verbose-fix:
  test-lib: bail out when "-v" used under "prove"
  travis: use --verbose-log test option
  test-lib: add --verbose-log option
  test-lib: handle TEST_OUTPUT_DIRECTORY with spaces
2016-10-26 13:14:54 -07:00
Junio C Hamano
bdcaebbedd Merge branch 'mm/send-email-cc-cruft-after-address'
"git send-email" attempts to pick up valid e-mails from the
trailers, but people in real world write non-addresses there, like
"Cc: Stable <add@re.ss> # 4.8+", which broke the output depending
on the availability and vintage of Mail::Address perl module.

* mm/send-email-cc-cruft-after-address:
  Git.pm: add comment pointing to t9000
  t9000-addresses: update expected results after fix
  parse_mailboxes: accept extra text after <...> address
2016-10-26 13:14:53 -07:00
Junio C Hamano
d347fb6596 Merge branch 'jk/diff-submodule-diff-inline'
A recently graduated topic regressed "git rev-list --header"
output, breaking "gitweb".  This has been fixed.

* jk/diff-submodule-diff-inline:
  rev-list: use hdr_termination instead of a always using a newline
2016-10-26 13:14:51 -07:00
Junio C Hamano
78498729e4 Merge branch 'tg/add-chmod+x-fix'
A hot-fix for a test added by a recent topic that went to both
'master' and 'maint' already.

* tg/add-chmod+x-fix:
  t3700: fix broken test under !SANITY
2016-10-26 13:14:50 -07:00
Junio C Hamano
9b009ce601 Merge branch 'pb/test-parse-options-expect'
Test clean-up.

* pb/test-parse-options-expect:
  t0040: convert all possible tests to use `test-parse-options --expect`
2016-10-26 13:14:49 -07:00
Junio C Hamano
a5ed26702b Merge branch 'va/i18n'
More i18n.

* va/i18n:
  i18n: diff: mark warnings for translation
  i18n: credential-cache--daemon: mark advice for translation
  i18n: convert mark error messages for translation
  i18n: apply: mark error message for translation
  i18n: apply: mark error messages for translation
  i18n: apply: mark info messages for translation
  i18n: apply: mark plural string for translation
2016-10-26 13:14:47 -07:00
Junio C Hamano
9fcd14491d Merge branch 'jk/fetch-quick-tag-following'
When fetching from a remote that has many tags that are irrelevant
to branches we are following, we used to waste way too many cycles
when checking if the object pointed at by a tag (that we are not
going to fetch!) exists in our repository too carefully.

* jk/fetch-quick-tag-following:
  fetch: use "quick" has_sha1_file for tag following
2016-10-26 13:14:47 -07:00
Junio C Hamano
92657ea597 Merge branch 'jk/merge-base-fork-point-without-reflog'
"git rebase" immediately after "git clone" failed to find the fork
point from the upstream.

* jk/merge-base-fork-point-without-reflog:
  merge-base: handle --fork-point without reflog
2016-10-26 13:14:47 -07:00
Junio C Hamano
caabffaf37 Merge branch 'jk/ambiguous-short-object-names'
A test fixup to recently graduated topic.

* jk/ambiguous-short-object-names:
  t1512: become resilient to GETTEXT_POISON build
2016-10-26 13:14:46 -07:00
Junio C Hamano
8e83d05315 Merge branch 'dk/worktree-dup-checkout-with-bare-is-ok'
In a worktree connected to a repository elsewhere, created via "git
worktree", "git checkout" attempts to protect users from confusion
by refusing to check out a branch that is already checked out in
another worktree.  However, this also prevented checking out a
branch, which is designated as the primary branch of a bare
reopsitory, in a worktree that is connected to the bare
repository.  The check has been corrected to allow it.

* dk/worktree-dup-checkout-with-bare-is-ok:
  worktree: allow the main brach of a bare repository to be checked out
2016-10-26 13:14:45 -07:00
Junio C Hamano
56d268baff Merge branch 'mg/gpg-richer-status'
The GPG verification status shown in "%G?" pretty format specifier
was not rich enough to differentiate a signature made by an expired
key, a signature made by a revoked key, etc.  New output letters
have been assigned to express them.

* mg/gpg-richer-status:
  gpg-interface: use more status letters
2016-10-26 13:14:45 -07:00
Junio C Hamano
1c2b1f7018 Merge branch 'bw/ls-files-recurse-submodules'
"git ls-files" learned "--recurse-submodules" option that can be
used to get a listing of tracked files across submodules (i.e. this
only works with "--cached" option, not for listing untracked or
ignored files).  This would be a useful tool to sit on the upstream
side of a pipe that is read with xargs to work on all working tree
files from the top-level superproject.

* bw/ls-files-recurse-submodules:
  ls-files: add pathspec matching for submodules
  ls-files: pass through safe options for --recurse-submodules
  ls-files: optionally recurse into submodules
  git: make super-prefix option
2016-10-26 13:14:44 -07:00
Junio C Hamano
e5272d304a Merge branch 'jc/ws-error-highlight'
"git diff/log --ws-error-highlight=<kind>" lacked the corresponding
configuration variable to set it by default.

* jc/ws-error-highlight:
  diff: introduce diff.wsErrorHighlight option
  diff.c: move ws-error-highlight parsing helpers up
  diff.c: refactor parse_ws_error_highlight()
  t4015: split out the "setup" part of ws-error-highlight test
2016-10-26 13:14:43 -07:00
Aaron M Watson
a56c8f5aab stash: allow stashes to be referenced by index only
Instead of referencing "stash@{n}" explicitly, make it possible to
simply reference as "n".  Most users only reference stashes by their
position in the stash stack (what I refer to as the "index" here).

The syntax for the typical stash (stash@{n}) is slightly annoying and
easy to forget, and sometimes difficult to escape properly in a
script. Because of this the capability to do things with the stash by
simply referencing the index is desirable.

This patch includes the superior implementation provided by Øsse Walle
(thanks for that), with a slight change to fix a broken test in the test
suite. I also merged the test scripts as suggested by Jeff King, and
un-wrapped the documentation as suggested by Junio Hamano.

Signed-off-by: Aaron M Watson <watsona4@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
2016-10-26 09:58:10 -07:00
Johannes Sixt
77b63ac31e t0060: sidestep surprising path mangling results on Windows
When an MSYS program (such as the bash that drives the test suite)
invokes git on Windows, absolute Unix style paths are transformed into
Windows native absolute paths (drive letter form). However, this
transformation also includes some simplifications that are not just
straight-forward textual substitutions:

- When the path ends in "/.", then the dot is stripped, but not the
  directory separator.

- When the path contains "..", then it is optimized away if possible,
  e.g., "/c/dir/foo/../bar" becomes "c:/dir/bar".

These additional transformations violate the assumptions of some
submodule path tests. We can avoid them when the input is already a
Windows native path, because then MSYS leaves the path unmolested.

Convert the uses of $PWD to $(pwd); the latter returns a native Windows
path.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-25 15:58:22 -07:00
Nguyễn Thái Ngọc Duy
2c49f7ffb3 commit: don't be fooled by ita entries when creating initial commit
ita entries are dropped at tree generation phase. If the entire index
consists of just ita entries, the result would be a a commit with no
entries, which should be caught unless --allow-empty is specified. The
test "!!active_nr" is not sufficient to catch this.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-24 10:54:11 -07:00
Nguyễn Thái Ngọc Duy
018ec3c820 commit: fix empty commit creation when there's no changes but ita entries
If i-t-a entries are present and there is no change between the index
and HEAD i-t-a entries, index_differs_from() still returns "dirty, new
entries" (aka, the resulting commit is not empty), but cache-tree will
skip i-t-a entries and produce the exact same tree of current
commit.

index_differs_from() is supposed to catch this so we can abort
git-commit (unless --no-empty is specified). Update it to optionally
ignore i-t-a entries when doing a diff between the index and HEAD so
that it would return "no change" in this case and abort commit.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-24 10:48:23 -07:00
Nguyễn Thái Ngọc Duy
b42b451919 diff: add --ita-[in]visible-in-index
The option --ita-invisible-in-index exposes the "ita_invisible_in_index"
diff flag to outside to allow easier experimentation with this new mode.
The "plan" is to make --ita-invisible-in-index default to keep consistent
behavior with 'status' and 'commit', but a bunch other commands like
'apply', 'merge', 'reset'.... need to be taken into consideration as well.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-24 10:47:51 -07:00
Nguyễn Thái Ngọc Duy
425a28e0a4 diff-lib: allow ita entries treated as "not yet exist in index"
When comparing the index and the working tree to show which paths are
new, and comparing the tree recorded in the HEAD and the index to see if
committing the contents recorded in the index would result in an empty
commit, we would want the former comparison to say "these are new paths"
and the latter to say "there is no change" for paths that are marked as
intent-to-add.

We made a similar attempt at d95d728a ("diff-lib.c: adjust position of
i-t-a entries in diff", 2015-03-16), which redefined the semantics of
these two comparison modes globally, which was a disaster and had to be
reverted at 78cc1a54 ("Revert "diff-lib.c: adjust position of i-t-a
entries in diff"", 2015-06-23).

To make sure we do not repeat the same mistake, introduce a new internal
diffopt option so that this different semantics can be asked for only by
callers that ask it, while making sure other unaudited callers will get
the same comparison result.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-24 10:47:28 -07:00
Jeff King
614fe01521 test-lib: bail out when "-v" used under "prove"
When there is a TAP harness consuming the output of our test
scripts, the "--verbose" breaks the output by mingling
test command output with TAP. Because the TAP::Harness
module used by "prove" is fairly lenient, this _usually_
works, but it violates the spec, and things get very
confusing if the commands happen to output a line that looks
like TAP (e.g., the word "ok" on its own line).

Let's detect this situation and complain. Just calling
error() isn't great, though; prove will tell us that the
script failed, but the message doesn't make it through to
the user. Instead, we can use the special TAP signal "Bail
out!". This not only shows the message to the user, but
instructs the harness to stop running the tests entirely.
This is exactly what we want here, as the problem is in the
command-line options, and every test script would produce
the same error.

The result looks like this (the first "Bailout called" line
is in red if prove uses color on your terminal):

 $ make GIT_TEST_OPTS='--verbose --tee'
 rm -f -r 'test-results'
 *** prove ***
 Bailout called.  Further testing stopped:  verbose mode forbidden under TAP harness; try --verbose-log
 FAILED--Further testing stopped: verbose mode forbidden under TAP harness; try --verbose-log
 Makefile:39: recipe for target 'prove' failed
 make: *** [prove] Error 255

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-24 09:26:00 -07:00
Jonathan Tan
60ef86a162 trailer: support values folded to multiple lines
Currently, interpret-trailers requires that a trailer be only on 1 line.
For example:

a: first line
   second line

would be interpreted as one trailer line followed by one non-trailer line.

Make interpret-trailers support RFC 822-style folding, treating those
lines as one logical trailer.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 11:48:35 -07:00
Jonathan Tan
c463a6b280 trailer: forbid leading whitespace in trailers
Currently, interpret-trailers allows leading whitespace in trailer
lines. This leads to false positives, especially for quoted lines or
bullet lists.

Forbid leading whitespace in trailers.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 11:48:35 -07:00
Jonathan Tan
146245063e trailer: allow non-trailers in trailer block
Currently, interpret-trailers requires all lines of a trailer block to
be trailers (or comments) - if not it would not identify that block as a
trailer block, and thus create its own trailer block, inserting a blank
line.  For example:

  echo -e "\nSigned-off-by: x\nnot trailer" |
  git interpret-trailers --trailer "c: d"

would result in:

  Signed-off-by: x
  not trailer

  c: d

Relax the definition of a trailer block to require that the trailers (i)
are all trailers, or (ii) contain at least one Git-generated trailer and
consists of at least 25% trailers.

  Signed-off-by: x
  not trailer
  c: d

(i) is the existing functionality. (ii) allows arbitrary lines to be
included in trailer blocks, like those in [1], and still allow
interpret-trailers to be used.

[1]
e7d316a02f

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 11:48:35 -07:00
Jeff King
452320f1f5 test-lib: add --verbose-log option
The "--verbose" option redirects output from arbitrary
test commands to stdout. This is useful for examining the
output manually, like:

  ./t5547-push-quarantine.sh -v | less

But it also means that the output is intermingled with the
TAP directives, which can confuse a TAP parser like "prove".
This has always been a potential problem, but became an
issue recently when one test happened to output the word
"ok" on a line by itself, which prove interprets as a test
success:

  $ prove t5547-push-quarantine.sh :: -v
  t5547-push-quarantine.sh .. 1/? To dest.git
   * [new branch]      HEAD -> master
  To dest.git
   ! [remote rejected] reject -> reject (pre-receive hook declined)
  error: failed to push some refs to 'dest.git'
  fatal: git cat-file d08c8eba97f4e683ece08654c7c8d2ba0c03b129: bad file
  t5547-push-quarantine.sh .. Failed -1/4 subtests

  Test Summary Report
  -------------------
  t5547-push-quarantine.sh (Wstat: 0 Tests: 5 Failed: 0)
    Parse errors: Tests out of sequence.  Found (2) but expected (3)
                  Tests out of sequence.  Found (3) but expected (4)
                  Tests out of sequence.  Found (4) but expected (5)
                  Bad plan.  You planned 4 tests but ran 5.
  Files=1, Tests=5,  0 wallclock secs ( 0.01 usr +  0.01 sys =  0.02 CPU)
  Result: FAIL

One answer is "if it hurts, don't do it", but that's not
quite the whole story. The Travis tests use "--verbose
--tee" so that they can get the benefit of prove's parallel
options, along with a verbose log in case there is a
failure. We just need the verbose output to go to the log,
but keep stdout clean.

Getting this right turns out to be surprisingly difficult.
Here's the progression of alternatives I considered:

 1. Add an option to write verbose output to stderr. This is
    hard to capture, though, because we want each test to
    have its own log (because they're all run in parallel
    and the jumbled output would be useless).

 2. Add an option to write verbose output to a file in
    test-results. This works, but the log is missing all of
    the non-verbose output, which gives context.

 3. Like (2), but teach say_color() to additionally output
    to the log. This mostly works, but misses any output
    that happens outside of the say() functions (which isn't
    a lot, but is a potential maintenance headache).

 4. Like (2), but make the log file the same as the "--tee"
    file. That almost works, but now we have two processes
    opening the same file. That gives us two separate
    descriptors, each with their own idea of the current
    position. They'll each start writing at offset 0, and
    overwrite each other's data.

 5. Like (4), but in each case open the file for appending.
    That atomically positions each write at the end of the
    file.

    It's possible we may still get sheared writes between
    the two processes, but this is already the case when
    writing to stdout. It's not a problem in practice
    because the test harness generally waits for snippets to
    finish before writing the TAP output.

    We can ignore buffering issues with tee, because POSIX
    mandates that it does not buffer. Likewise, POSIX
    specifies "tee -a", so it should be available
    everywhere.

This patch implements option (5), which seems to work well
in practice.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 09:54:35 -07:00
Jeff King
925bdc928e test-lib: handle TEST_OUTPUT_DIRECTORY with spaces
We are careful in test_done to handle a results directory
with a space in it, but the "--tee" code path does not.
Doing:

  export TEST_OUTPUT_DIRECTORY='/tmp/path with spaces'
  ./t000-init.sh --tee

results in errors. Let's consistently double-quote our path
variables so that this works.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 09:54:34 -07:00
Matthieu Moy
8a420edbd2 t9000-addresses: update expected results after fix
e3fdbcc8e1 (parse_mailboxes: accept extra text after <...> address,
2016-10-13) improved our in-house address parser and made it closer to
Mail::Address. As a consequence, some tests comparing it to
Mail::Address now pass, but e3fdbcc8e1 forgot to update the test.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 09:47:51 -07:00
Johannes Schindelin
93b3df6f14 sequencer: start error messages consistently with lower case
Quite a few error messages touched by this developer during the work to
speed up rebase -i started with an upper case letter, violating our
current conventions. Instead of sneaking in this fix (and forgetting
quite a few error messages), let's just have one wholesale patch fixing
all of the error messages in the sequencer.

While at it, the funny "error: Error wrapping up..." was changed to a
less funny, but more helpful, "error: failed to finalize...".

Pointed out by Junio Hamano.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 09:32:35 -07:00
Jacob Keller
98985c6911 rev-list: use hdr_termination instead of a always using a newline
When adding support for prefixing output of log and other commands using
--line-prefix, commit 660e113ce1 ("graph: add support for
--line-prefix on all graph-aware output", 2016-08-31) accidentally
broke rev-list --header output.

In order to make the output appear with a line-prefix, the flow was
changed to always use the graph subsystem for display. Unfortunately
the graph flow in rev-list did not use info->hdr_termination as it was
assumed that graph output would never need to putput NULs.

Since we now always use the graph code in order to handle the case of
line-prefix, simply replace putchar('\n') with
putchar(info->hdr_termination) which will correct this issue.

Add a test for the --header case to make sure we don't break it in the
future.

Reported-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-20 14:44:37 -07:00
Junio C Hamano
76e368c378 t3700: fix broken test under !SANITY
An "add --chmod=+x" test recently added by 610d55af0f ("add: modify
already added files when --chmod is given", 2016-09-14) used "xfoo3"
as a test file.  The paths xfoo[1-3] were used by earlier tests for
symbolic links but they were expected to have been removed by the
time the execution reached this new test.

The removal with "git reset --hard" however happened in a pair of
earlier tests, both of which are protected by POSIXPERM,SANITY
prerequisites.  Platforms and test environments that lacked these
would have seen xfoo3 as a leftover symbolic link that points at
somewhere else at this point of the sequence, and the chmod test
would have given a wrong result.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-20 09:19:05 -07:00
Vasco Almeida
87cb7845fe i18n: convert mark error messages for translation
Mark error messages about CRLF for translation.

Update test to reflect changes.

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17 14:51:45 -07:00
Vasco Almeida
f25dfb5e8d i18n: apply: mark error message for translation
Update test to reflect changes.

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17 14:51:42 -07:00
Pranit Bauva
86009f32bb t0040: convert all possible tests to use test-parse-options --expect
Use "test-parse-options --expect" to rewrite the tests to avoid checking
the whole variable dump by just testing what is required.

This commit is a follow-up to 8ca65aebad ("t0040: convert a few
tests to use test-parse-options --expect", 2016-05-06).

Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17 14:45:01 -07:00
Junio C Hamano
5b4c45af0c Merge branch 'da/mergetool-diff-order'
"git mergetool" learned to honor "-O<orderfile>" to control the
order of paths to present to the end user.

* da/mergetool-diff-order:
  mergetool: honor -O<orderfile>
  mergetool: honor diff.orderFile
  mergetool: move main program flow into a main() function
  mergetool: add copyright
2016-10-17 13:25:21 -07:00
Junio C Hamano
f7300cbfdd Merge branch 'jk/ref-symlink-loop'
A stray symbolic link in $GIT_DIR/refs/ directory could make name
resolution loop forever, which has been corrected.

* jk/ref-symlink-loop:
  files_read_raw_ref: prevent infinite retry loops in general
  files_read_raw_ref: avoid infinite loop on broken symlinks
2016-10-17 13:25:20 -07:00
Junio C Hamano
25ab004c53 Merge branch 'jk/quarantine-received-objects'
In order for the receiving end of "git push" to inspect the
received history and decide to reject the push, the objects sent
from the sending end need to be made available to the hook and
the mechanism for the connectivity check, and this was done
traditionally by storing the objects in the receiving repository
and letting "git gc" to expire it.  Instead, store the newly
received objects in a temporary area, and make them available by
reusing the alternate object store mechanism to them only while we
decide if we accept the check, and once we decide, either migrate
them to the repository or purge them immediately.

* jk/quarantine-received-objects:
  tmp-objdir: do not migrate files starting with '.'
  tmp-objdir: put quarantine information in the environment
  receive-pack: quarantine objects until pre-receive accepts
  tmp-objdir: introduce API for temporary object directories
  check_connected: accept an env argument
2016-10-17 13:25:20 -07:00
Junio C Hamano
dec040192f Merge branch 'jk/alt-odb-cleanup'
Codepaths involved in interacting alternate object store have
been cleaned up.

* jk/alt-odb-cleanup:
  alternates: use fspathcmp to detect duplicates
  sha1_file: always allow relative paths to alternates
  count-objects: report alternates via verbose mode
  fill_sha1_file: write into a strbuf
  alternates: store scratch buffer as strbuf
  fill_sha1_file: write "boring" characters
  alternates: use a separate scratch space
  alternates: encapsulate alt->base munging
  alternates: provide helper for allocating alternate
  alternates: provide helper for adding to alternates list
  link_alt_odb_entry: refactor string handling
  link_alt_odb_entry: handle normalize_path errors
  t5613: clarify "too deep" recursion tests
  t5613: do not chdir in main process
  t5613: whitespace/style cleanups
  t5613: use test_must_fail
  t5613: drop test_valid_repo function
  t5613: drop reachable_via function
2016-10-17 13:25:20 -07:00
Lars Schneider
edcc85814c convert: add filter.<driver>.process option
Git's clean/smudge mechanism invokes an external filter process for
every single blob that is affected by a filter. If Git filters a lot of
blobs then the startup time of the external filter processes can become
a significant part of the overall Git execution time.

In a preliminary performance test this developer used a clean/smudge
filter written in golang to filter 12,000 files. This process took 364s
with the existing filter mechanism and 5s with the new mechanism. See
details here: https://github.com/github/git-lfs/pull/1382

This patch adds the `filter.<driver>.process` string option which, if
used, keeps the external filter process running and processes all blobs
with the packet format (pkt-line) based protocol over standard input and
standard output. The full protocol is explained in detail in
`Documentation/gitattributes.txt`.

A few key decisions:

* The long running filter process is referred to as filter protocol
  version 2 because the existing single shot filter invocation is
  considered version 1.
* Git sends a welcome message and expects a response right after the
  external filter process has started. This ensures that Git will not
  hang if a version 1 filter is incorrectly used with the
  filter.<driver>.process option for version 2 filters. In addition,
  Git can detect this kind of error and warn the user.
* The status of a filter operation (e.g. "success" or "error) is set
  before the actual response and (if necessary!) re-set after the
  response. The advantage of this two step status response is that if
  the filter detects an error early, then the filter can communicate
  this and Git does not even need to create structures to read the
  response.
* All status responses are pkt-line lists terminated with a flush
  packet. This allows us to send other status fields with the same
  protocol in the future.

Helped-by: Martin-Louis Bright <mlbright@gmail.com>
Reviewed-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17 11:45:52 -07:00
Lars Schneider
ed54970324 convert: modernize tests
Use `test_config` to set the config, check that files are empty with
`test_must_be_empty`, compare files with `test_cmp`, and remove spaces
after ">" and "<".

Please note that the "rot13" filter configured in "setup" keeps using
`git config` instead of `test_config` because subsequent tests might
depend on it.

Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17 11:36:49 -07:00
Jeff King
5827a03545 fetch: use "quick" has_sha1_file for tag following
When we auto-follow tags in a fetch, we look at all of the
tags advertised by the remote and fetch ones where we don't
already have the tag, but we do have the object it peels to.
This involves a lot of calls to has_sha1_file(), some of
which we can reasonably expect to fail. Since 45e8a74
(has_sha1_file: re-check pack directory before giving up,
2013-08-30), this may cause many calls to
reprepare_packed_git(), which is potentially expensive.

This has gone unnoticed for several years because it
requires a fairly unique setup to matter:

  1. You need to have a lot of packs on the client side to
     make reprepare_packed_git() expensive (the most
     expensive part is finding duplicates in an unsorted
     list, which is currently quadratic).

  2. You need a large number of tag refs on the server side
     that are candidates for auto-following (i.e., that the
     client doesn't have). Each one triggers a re-read of
     the pack directory.

  3. Under normal circumstances, the client would
     auto-follow those tags and after one large fetch, (2)
     would no longer be true. But if those tags point to
     history which is disconnected from what the client
     otherwise fetches, then it will never auto-follow, and
     those candidates will impact it on every fetch.

So when all three are true, each fetch pays an extra
O(nr_tags * nr_packs^2) cost, mostly in string comparisons
on the pack names. This was exacerbated by 47bf4b0
(prepare_packed_git_one: refactor duplicate-pack check,
2014-06-30) which uses a slightly more expensive string
check, under the assumption that the duplicate check doesn't
happen very often (and it shouldn't; the real problem here
is how often we are calling reprepare_packed_git()).

This patch teaches fetch to use HAS_SHA1_QUICK to sacrifice
accuracy for speed, in cases where we might be racy with a
simultaneous repack. This is similar to the fix in 0eeb077
(index-pack: avoid excessive re-reading of pack directory,
2015-06-09). As with that case, it's OK for has_sha1_file()
occasionally say "no I don't have it" when we do, because
the worst case is not a corruption, but simply that we may
fail to auto-follow a tag that points to it.

Here are results from the included perf script, which sets
up a situation similar to the one described above:

Test            HEAD^               HEAD
----------------------------------------------------------
5550.4: fetch   11.21(10.42+0.78)   0.08(0.04+0.02) -99.3%

Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-14 11:31:32 -07:00
Matthieu Moy
e3fdbcc8e1 parse_mailboxes: accept extra text after <...> address
The test introduced in this commit succeeds without the patch to Git.pm
if Mail::Address is installed, but fails otherwise because our in-house
parser does not accept any text after the email address. They succeed
both with and without Mail::Address after this commit.

Mail::Address accepts extra text and considers it as part of the name,
iff the address is surrounded with <...>. The implementation mimics
this behavior as closely as possible.

This mostly restores the behavior we had before b1c8a11 (send-email:
allow multiple emails using --cc, --to and --bcc, 2015-06-30), but we
keep the possibility to handle comma-separated lists.

Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-14 10:06:09 -07:00
Dennis Kaarsemaker
171c646f8c worktree: allow the main brach of a bare repository to be checked out
In bare repositories, get_worktrees() still returns the main repository,
so git worktree list can show it. ignore it in find_shared_symref so we
can still check out the main branch.

Signed-off-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
Acked-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-14 09:58:58 -07:00
Jeff King
4f21454b55 merge-base: handle --fork-point without reflog
The --fork-point option looks in the reflog to try to find
where a derived branch forked from a base branch. However,
if the reflog for the base branch is totally empty (as it
commonly is right after cloning, which does not write a
reflog entry), then our for_each_reflog call will not find
any entries, and we will come up with no merge base, even
though there may be one with the current tip of the base.

We can fix this by just adding the current tip to
our list of collected entries.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-12 14:30:16 -07:00
Michael J Gruber
661a180681 gpg-interface: use more status letters
According to gpg2's doc/DETAILS:

    For each signature only one of the codes GOODSIG, BADSIG,
    EXPSIG, EXPKEYSIG, REVKEYSIG or ERRSIG will be emitted.

gpg1 ("classic") behaves the same (although doc/DETAILS differs).

Currently, we parse gpg's status output for GOODSIG, BADSIG and
trust information and translate that into status codes G, B, U, N
for the %G?  format specifier.

git-verify-* returns success in the GOODSIG case only. This is
somewhat in disagreement with gpg, which considers the first 5 of
the 6 above as VALIDSIG, but we err on the very safe side.

Introduce additional status codes E, X, Y, R for ERRSIG, EXPSIG,
EXPKEYSIG, and REVKEYSIG so that a user of %G? gets more information
about the absence of a 'G' on first glance.

Requested-by: Alex <agrambot@gmail.com>
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-12 10:41:59 -07:00
Vasco Almeida
3bb464437e t1512: become resilient to GETTEXT_POISON build
The concerned message was marked for translation by 0c99171
("get_short_sha1: mark ambiguity error for translation", 2016-09-26).

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-12 10:39:01 -07:00
Junio C Hamano
e1eb84cccb Merge branch 'kd/mailinfo-quoted-string' into maint
An author name, that spelled a backslash-quoted double quote in the
human readable part "My \"double quoted\" name", was not unquoted
correctly while applying a patch from a piece of e-mail.

* kd/mailinfo-quoted-string:
  mailinfo: unescape quoted-pair in header fields
  t5100-mailinfo: replace common path prefix with variable
2016-10-11 14:20:32 -07:00
David Aguilar
654311bf6e mergetool: honor -O<orderfile>
Teach mergetool to pass "-O<orderfile>" down to `git diff` when
specified on the command-line.

Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: David Aguilar <davvid@gmail.com>
Reviewed-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-11 10:04:31 -07:00
David Aguilar
57937f70a0 mergetool: honor diff.orderFile
Teach mergetool to get the list of files to edit via `diff` so that we
gain support for diff.orderFile.

Suggested-by: Luis Gutierrez <luisgutz@gmail.com>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: David Aguilar <davvid@gmail.com>
Reviewed-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-11 10:04:27 -07:00
Junio C Hamano
a460ea4a3c Merge branch 'nd/shallow-deepen'
The existing "git fetch --depth=<n>" option was hard to use
correctly when making the history of an existing shallow clone
deeper.  A new option, "--deepen=<n>", has been added to make this
easier to use.  "git clone" also learned "--shallow-since=<date>"
and "--shallow-exclude=<tag>" options to make it easier to specify
"I am interested only in the recent N months worth of history" and
"Give me only the history since that version".

* nd/shallow-deepen: (27 commits)
  fetch, upload-pack: --deepen=N extends shallow boundary by N commits
  upload-pack: add get_reachable_list()
  upload-pack: split check_unreachable() in two, prep for get_reachable_list()
  t5500, t5539: tests for shallow depth excluding a ref
  clone: define shallow clone boundary with --shallow-exclude
  fetch: define shallow boundary with --shallow-exclude
  upload-pack: support define shallow boundary by excluding revisions
  refs: add expand_ref()
  t5500, t5539: tests for shallow depth since a specific date
  clone: define shallow clone boundary based on time with --shallow-since
  fetch: define shallow boundary with --shallow-since
  upload-pack: add deepen-since to cut shallow repos based on time
  shallow.c: implement a generic shallow boundary finder based on rev-list
  fetch-pack: use a separate flag for fetch in deepening mode
  fetch-pack.c: mark strings for translating
  fetch-pack: use a common function for verbose printing
  fetch-pack: use skip_prefix() instead of starts_with()
  upload-pack: move rev-list code out of check_non_tip()
  upload-pack: make check_non_tip() clean things up on error
  upload-pack: tighten number parsing at "deepen" lines
  ...
2016-10-10 14:03:50 -07:00
Junio C Hamano
e6e24c94df Merge branch 'jk/pack-objects-optim-mru'
"git pack-objects" in a repository with many packfiles used to
spend a lot of time looking for/at objects in them; the accesses to
the packfiles are now optimized by checking the most-recently-used
packfile first.

* jk/pack-objects-optim-mru:
  pack-objects: use mru list when iterating over packs
  pack-objects: break delta cycles before delta-search phase
  sha1_file: make packed_object_info public
  provide an initializer for "struct object_info"
2016-10-10 14:03:47 -07:00
Junio C Hamano
b8688adb12 Merge branch 'rs/qsort'
We call "qsort(array, nelem, sizeof(array[0]), fn)", and most of
the time third parameter is redundant.  A new QSORT() macro lets us
omit it.

* rs/qsort:
  show-branch: use QSORT
  use QSORT, part 2
  coccicheck: use --all-includes by default
  remove unnecessary check before QSORT
  use QSORT
  add QSORT
2016-10-10 14:03:46 -07:00
Jeff King
722ff7f876 receive-pack: quarantine objects until pre-receive accepts
When a client pushes objects to us, index-pack checks the
objects themselves and then installs them into place. If we
then reject the push due to a pre-receive hook, we cannot
just delete the packfile; other processes may be depending
on it. We have to do a normal reachability check at this
point via `git gc`.

But such objects may hang around for weeks due to the
gc.pruneExpire grace period. And worse, during that time
they may be exploded from the pack into inefficient loose
objects.

Instead, this patch teaches receive-pack to put the new
objects into a "quarantine" temporary directory. We make
these objects available to the connectivity check and to the
pre-receive hook, and then install them into place only if
it is successful (and otherwise remove them as tempfiles).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 13:54:02 -07:00
Jeff King
ea0fc3b417 alternates: use fspathcmp to detect duplicates
On a case-insensitive filesystem, we should realize that
"a/objects" and "A/objects" are the same path. We already
use fspathcmp() to check against the main object directory,
but until recently we couldn't use it for comparing against
other alternates (because their paths were not
NUL-terminated strings). But now we can, so let's do so.

Note that we also need to adjust count-objects to load the
config, so that it can see the setting of core.ignorecase
(this is required by the test, but is also a general bugfix
for users of count-objects).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 13:52:37 -07:00
Jeff King
087b6d5840 sha1_file: always allow relative paths to alternates
We recursively expand alternates repositories, so that if A
borrows from B which borrows from C, A can see all objects.

For the root object database, we allow relative paths, so A
can point to B as "../B/objects". However, we currently do
not allow relative paths when recursing, so B must use an
absolute path to reach C.

That is an ancient protection from c2f493a (Transitively
read alternatives, 2006-05-07) that tries to avoid adding
the same alternate through two different paths. Since
5bdf0a8 (sha1_file: normalize alt_odb path before comparing
and storing, 2011-09-07), we use a normalized absolute path
for each alt_odb entry.

This means that in most cases the protection is no longer
necessary; we will detect the duplicate no matter how we got
there (but see below).  And it's a good idea to get rid of
it, as it creates an unnecessary complication when setting
up recursive alternates (B has to know that A is going to
borrow from it and make sure to use an absolute path).

Note that our normalization doesn't actually look at the
filesystem, so it can still be fooled by crossing symbolic
links. But that's also true of absolute paths, so it's not a
good reason to disallow only relative paths (it's
potentially a reason to switch to real_path(), but that's a
separate and non-trivial change).

We adjust the test script here to demonstrate that this now
works, and add new tests to show that the normalization does
indeed suppress duplicates.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 13:52:37 -07:00
Jeff King
5fe849d651 count-objects: report alternates via verbose mode
There's no way to get the list of alternates that git
computes internally; our tests only infer it based on which
objects are available. In addition to testing, knowing this
list may be helpful for somebody debugging their alternates
setup.

Let's add it to the "count-objects -v" output. We could give
it a separate flag, but there's not really any need.
"count-objects -v" is already a debugging catch-all for the
object database, its output is easily extensible to new data
items, and printing the alternates is not expensive (we
already had to find them to count the objects).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 13:52:37 -07:00
Jeff King
f0f86fa9f3 t5613: clarify "too deep" recursion tests
These tests are just trying to show that we allow recursion
up to a certain depth, but not past it. But the counting is
a bit non-intuitive, and rather than test at the edge of the
breakage, we test "OK" cases in the middle of the chain.
Let's explain what's going on, and explicitly test the
switch between "OK" and "too deep".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 13:52:36 -07:00
Stefan Beller
3389e78ec8 submodule: ignore trailing slash in relative url
This is similar to the previous patch, though no user reported a bug and
I could not find a regressive behavior.

However it is a good thing to be strict on the output and for that we
always omit a trailing slash.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 13:30:31 -07:00
Stefan Beller
087885049e submodule: ignore trailing slash on superproject URL
Before 63e95beb0 (2016-04-15, submodule: port resolve_relative_url from
shell to C), it did not matter if the superprojects URL had a trailing
slash or not. It was just chopped off as one of the first steps
(The "remoteurl=${remoteurl%/}" near the beginning of
resolve_relative_url(), which was removed in said commit).

When porting this to the C version, an off-by-one error was introduced
and we did not check the actual last character to be a slash, but the
NULL delimiter.

Reintroduce the behavior from before 63e95beb0, to ignore the trailing
slash.

Reported-by: <venv21@gmail.com>
Helped-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 13:30:28 -07:00
Brandon Williams
75a6315f74 ls-files: add pathspec matching for submodules
Pathspecs can be a bit tricky when trying to apply them to submodules.
The main challenge is that the pathspecs will be with respect to the
superproject and not with respect to paths in the submodule.  The
approach this patch takes is to pass in the identical pathspec from the
superproject to the submodule in addition to the submodule-prefix, which
is the path from the root of the superproject to the submodule, and then
we can compare an entry in the submodule prepended with the
submodule-prefix to the pathspec in order to determine if there is a
match.

This patch also permits the pathspec logic to perform a prefix match against
submodules since a pathspec could refer to a file inside of a submodule.
Due to limitations in the wildmatch logic, a prefix match is only done
literally.  If any wildcard character is encountered we'll simply punt
and produce a false positive match.  More accurate matching will be done
once inside the submodule.  This is due to the superproject not knowing
what files could exist in the submodule.

Signed-off-by: Brandon Williams <bmwill@google.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 12:14:58 -07:00
Brandon Williams
07c01b9fd9 ls-files: pass through safe options for --recurse-submodules
Pass through some known-safe options when recursing into submodules.
(--cached, -v, -t, -z, --debug, --eol)

Signed-off-by: Brandon Williams <bmwill@google.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 12:14:58 -07:00