Reduce the use of fixed sized buffer passed to getcwd() calls
by introducing xgetcwd() helper.

* rs/strbuf-getcwd:
  use strbuf_add_absolute_path() to add absolute paths
  abspath: convert absolute_path() to strbuf
  use xgetcwd() to set $GIT_DIR
  use xgetcwd() to get the current directory or die
  wrapper: add xgetcwd()
  abspath: convert real_path_internal() to strbuf
  abspath: use strbuf_getcwd() to remember original working directory
  setup: convert setup_git_directory_gently_1 et al. to strbuf
  unix-sockets: use strbuf_getcwd()
  strbuf: add strbuf_getcwd()

* ta/pretty-parse-config:
  pretty.c: make git_pretty_formats_config return -1 on git_config_string failure

Implementations of "tar" that do not understand an extended pax
header would extract the contents of it in a regular file; make
sure the permission bits of this file follows the same tar.umask
configuration setting.

* bc/archive-pax-header-mode:
  archive: honor tar.umask even for pax headers

Optimize remotes configuration look-up in a repository with very
many remotes defined.

* pr/remotes-in-hashmap:
  use a hashmap to make remotes faster

"git log --pretty/format=" with an empty format string did not mean
the more obvious "No output whatsoever" but "Use default format",
which was counterintuitive.

* jk/pretty-empty-format:
  pretty: make empty userformats truly empty
  pretty: treat "--format=" as an empty userformat
  revision: drop useless string offset when parsing "--pretty"

Add in-core caching layer to let us avoid reading the same
configuration files number of times.

* ta/config-set:
  test-config: add tests for the config_set API
  add `config_set` API for caching config-like files

* rs/init-no-duplicate-real-path:
  init: avoid superfluous real_path() calls

Start "git config --edit --global" from a skeletal per-user
configuration file contents, instead of a total blank, when the
user does not already have any.  This immediately reduces the need
for a later "Have you forgotten setting core.user?" and we can add
more to the template as we gain more experience.

* mm/config-edit-global:
  commit: advertise config --global --edit on guessed identity
  home_config_paths(): let the caller ignore xdg path
  config --global --edit: create a template file if needed

There are cases where you lock and open to write a file, close it to
show the updated contents to external processes, and then have to
update the file again while still holding the lock, but the lockfile
API lacked support for such an access pattern.

* jc/reopen-lock-file:
  lockfile: allow reopening a closed but still locked file

* git://github.com/git-l10n/git-po:
  po/TEAMS: add new members to German translation team
  l10n: de.po: translate 38 new messages

Signed-off-by: NRalf Thielow <ralf.thielow@gmail.com>

Translate 38 new messages came from git.pot update in fe05e196
(l10n: git.pot: v2.1.0 round 1 (38 new, 9 removed)).
Signed-off-by: NRalf Thielow <ralf.thielow@gmail.com>

Fix (rarely used) "git diff-tree -t" regression in 2.0.

* jk/diff-tree-t-fix:
  intersect_paths: respect mode in git's tree-sort

Reachability bitmaps do not work with shallow operations.
Fixes regression in 2.0.

* jk/pack-shallow-always-without-bitmap:
  pack-objects: turn off bitmaps when we see --shallow lines

Fix profile-feedback build broken in 2.1 for tarball releases.

* jk/fix-profile-feedback-build:
  Makefile: make perf tests optional for profile build

Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Move most of the code of absolute_path() into the new function
strbuf_add_absolute_path() and in the process transform it to use
struct strbuf and xgetcwd() instead of a PATH_MAX-sized buffer,
which can be too small on some file systems.
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Instead of dying of a segmentation fault if getcwd() returns NULL, use
xgetcwd() to make sure to write a useful error message and then exit
in an orderly fashion.
Suggested-by: NJeff King <peff@peff.net>
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Convert several calls of getcwd() and die() to use xgetcwd() instead.
This way we get rid of fixed-size buffers (which can be too small
depending on the used file system) and gain consistent error messages.
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Add the helper function xgetcwd(), which returns the current directory
or dies.  The returned string has to be free()d after use.
Helped-by: NDuy Nguyen <pclouds@gmail.com>
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Use strbuf instead of fixed-sized buffers in real_path() in order to
avoid the size limitations of the latter.
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Store the original working directory in a strbuf instead of in a
fixed-sized buffer, in order to be able to handle longer paths.
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Convert setup_git_directory_gently_1() and its helper functions
setup_explicit_git_dir(), setup_discovered_git_dir() and
setup_bare_git_dir() to use a struct strbuf to hold the current working
directory.  Replacing the PATH_MAX-sized buffer used before removes a
path length limition on some file systems.  The functions are converted
all in one go because they all read and write the variable cwd.
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* git://github.com/git-l10n/git-po:
  l10n: de.po: improve message when switching branches
  l10n: de.po: fix typo
  po/TEAMS: Add Catalan team
  l10n: Add Catalan translation
  l10n: fr.po (2257t) update for version 2.1.0
  l10n: sv.po: Update Swedish translation (2257t0f0u)
  l10n: vi.po (2257t): Update translation
  l10n: Updated Bulgarian translation of git (2257t,0f,0u)
  l10n: zh_CN: translations for git v2.1.0-rc0
  l10n: git.pot: v2.1.0 round 1 (38 new, 9 removed)
  l10n: Updated Bulgarian translation of git (2247t,0f,0u)
  l10n: Updated Bulgarian translation of git (2228t,0f,0u)
  l10n: Fix more typos in the Swedish translations

Suggested-by: NStefan Beller <stefanbeller@gmail.com>
Signed-off-by: NRalf Thielow <ralf.thielow@gmail.com>

Reported-by: Hartmut Henkel
Signed-off-by: NRalf Thielow <ralf.thielow@gmail.com>

Signed-off-by: NAlex Henrie <alexhenrie24@gmail.com>

Signed-off-by: NAlex Henrie <alexhenrie24@gmail.com>

When we do a combined diff, we individually diff against
each parent, and then use intersect_paths to do a parallel
walk through the sorted results and come up with a final
list of interesting paths.

The sort order here is that returned by the diffs, which
means it is in git's tree-order which sorts sub-trees as if
their paths have "/" at the end. When we do our parallel
walk, we need to use a comparison function which provides
the same order.

Since 8518ff8f (combine-diff: optimize combine_diff_path sets
intersection, 2014-01-20), we use a simple strcmp to
compare the pathnames, and get this wrong. It's somewhat
hard to trigger because normally a diff does not produce
tree entries at all, and therefore the sort order is the
same as a strcmp. However, if the "-t" option is used with
the diff, then we will produce diff_filepairs for both trees
and files.

We can use base_name_compare to do the comparison, just as
the tree-diff code does. Even though what we have are not
technically base names (they are full paths within the
tree), the end result is the same (we do not care about
interior slashes at all, only about the final character).

However, since we do not have the length of each path
stored, we take a slight shortcut: if neither of the entries
is a sub-tree then the comparison is equivalent to a strcmp.
This lets us skip the extra strlen calls in the common case
without having to reimplement base_name_compare from
scratch.
Signed-off-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The perf tests need a repository to operate on; if none is
defined, we fall back to the repository containing our build
directory.  That fails, though, for an exported tarball of
git.git, which has no repository.

Since 5d7fd6d0 we run the perf tests as part of "make
profile". Therefore "make profile" fails out of the box on
released tarballs of v2.1.0.

We can fix this by making the perf tests optional; if they
are skipped, we still run the regular test suite, which
should give a lot of profile data (and is what we used to do
prior to 5d7fd6d0 anyway).
Signed-off-by: NJeff King <peff@peff.net>
Acked-by: NAndi Kleen <ak@linux.intel.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

The helper function test_i18ngrep pretends that it found the expected
results when it is running under GETTEXT_POISON. For this reason, it must
not be used negated like so

   ! test_i18ngrep foo bar

because the test case would fail under GETTEXT_POISON. The function offers
a special syntax to test that a pattern is *not* found:

   test_i18ngrep ! foo bar

Convert incorrect uses to this syntax.
Signed-off-by: NJohannes Sixt <j6t@kdbg.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Reachability bitmaps do not work with shallow operations,
because they cache a view of the object reachability that
represents the true objects. Whereas a shallow repository
(or a shallow operation in a repository) is inherently
cutting off the object graph with a graft.

We explicitly disallow the use of bitmaps in shallow
repositories by checking is_repository_shallow(), and we
should continue to do that. However, we also want to
disallow bitmaps when we are serving a fetch to a shallow
client, since we momentarily take on their grafted view of
the world.

It used to be enough to call is_repository_shallow at the
start of pack-objects.  Upload-pack wrote the other side's
shallow state to a temporary file and pointed the whole
pack-objects process at this state with "git --shallow-file",
and from the perspective of pack-objects, we really were
in a shallow repo.  But since b790e0f6 (upload-pack: send
shallow info over stdin to pack-objects, 2014-03-11), we do
it differently: we send --shallow lines to pack-objects over
stdin, and it registers them itself.

This means that our is_repository_shallow check is way too
early (we have not been told about the shallowness yet), and
that it is insufficient (calling is_repository_shallow is
not enough, as the shallow grafts we register do not change
its return value). Instead, we can just turn off bitmaps
explicitly when we see these lines.
Signed-off-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* 'master' of git://ozlabs.org/~paulus/gitk:
  gitk: Updated Bulgarian translation (302t,0f,0u)
  gitk: Add keybinding to switch to parent commit

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

Signed-off-by: NAlexander Shopov <ash@kambanaria.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NMax Kirillov <max@max630.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

* mb/relnotes-2.1:
  Release notes: grammatical fixes
  RelNotes: no more check_ref_format micro-optimization

Signed-off-by: NMarc Branchaud <marcnarc@xiplink.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Inspired by 2147fa7e (2014-07-31 git-push: fix link in man page),
I grepped through the whole tree searching for 'gitlink:' occurrences.
Signed-off-by: NStefan Beller <stefanbeller@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>