The packet_read_line() function will die if it sees any
protocol or socket errors. But it will return NULL for a
flush packet; some callers which are not expecting this may
dereference NULL if they get an unexpected flush. This would
involve the other side breaking protocol, but we should
flag the error rather than segfault.
Signed-off-by: NJon Simons <jon@jonsimons.org>
Reviewed-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The packet_read_line() function dies if it gets an
unexpected EOF. It only returns NULL if we get a flush
packet (or technically, a zero-length "0004" packet, but
nobody is supposed to send those, and they are
indistinguishable from a flush in this interface).

Let's correct error messages which claim an unexpected EOF;
it's really an unexpected flush packet.

While we're here, let's also check "!line" instead of
"!len" in the second case. The two events should always
coincide, but checking "!line" makes it more obvious that we
are not about to dereference NULL.
Signed-off-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

* bc/hash-algo:
  t5601-clone: test case-conflicting files on case-insensitive filesystem
  repository: pre-initialize hash algo pointer

A recently introduced regression caused a segfault at clone time on
case-insensitive filesystems when filenames differing only in case are
present. This bug has already been fixed (repository: pre-initialize
hash algo pointer, 2018-01-18), but it's not the first time similar
problems have arisen. Therefore, introduce a test to catch this case and
protect against future regressions.
Signed-off-by: NEric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Nbrian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: NEric Sunshine <sunshine@sunshineco.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

There are various git subcommands (among them, clone) which don't set up
the repository (that is, they lack RUN_SETUP or RUN_SETUP_GENTLY) but
end up needing to have information about the hash algorithm in use.
Because the hash algorithm is part of struct repository and it's only
initialized in repository setup, we can end up dereferencing a NULL
pointer in some cases if we call one of these subcommands and look up
the empty blob or empty tree values.

A "git clone" of a project that has two paths that differ only in
case suffers from this if it is run on a case insensitive platform.
When the command attempts to check out one of these two paths after
checking out the other one, the checkout codepath needs to see if
the version that is already on the filesystem (which should not
happen if the FS were case sensitive) is dirty, and it needs to
exercise the hashing code at that point.

In the future, we can add a command line option for this or read it
from the configuration, but until we're ready to expose that
functionality to the user, simply initialize the repository
structure to use the current hash algorithm, SHA-1.
Signed-off-by: Nbrian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

l10n for Git 2.16.0 round 2

* tag 'l10n-2.16.0-rnd2' of git://github.com/git-l10n/git-po: (24 commits)
  l10n: de.po: translate 72 new messages
  l10n: de.po: improve messages when a branch starts to track another ref
  l10n: bg.po: Updated Bulgarian translation (3288t)
  l10n: TEAMS: add zh_CN team members
  l10n: zh_CN: for git v2.16.0 l10n round 2
  l10n: sv.po: Update Swedish translation (3288t0f0u)
  l10n: ru.po: update Russian translation
  l10n: TEAMS: Add ko team members
  l10n: ko.po: Update Korean translation
  l10n: fr.po 2.16 round 2
  l10n: es.po: Spanish translation 2.16.0 round 2
  l10n: vi.po(3288t): Updated Vietnamese translation for v2.16.0 round 2
  l10n: git.pot: v2.16.0 round 2 (8 new, 4 removed)
  l10n: es.po: Update Spanish Translation v2.16.0
  l10n: fr.po v2.16.0 round 1
  l10n: bg.po: Updated Bulgarian translation (3284t)
  l10n: sv.po: Update Swedish translation (3284t0f0u)
  l10n: fr.po: "worktree list" mistranslated as prune
  l10n: git.pot: v2.16.0 round 1 (64 new, 25 removed)
  l10n: fixes to German translation
  ...

Translate 72 new messages came from git.pot update in 18a90722 (l10n:
git.pot: v2.16.0 round 1 (64 new, 25 removed)) and 005c62fe (l10n:
git.pot: v2.16.0 round 2 (8 new, 4 removed)).
Signed-off-by: NRalf Thielow <ralf.thielow@gmail.com>
Acked-by: NMatthias Rüster <matthias.ruester@gmail.com>

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

Signed-off-by: NSZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

Hotfix for a topic already in 'master'.

* jh/object-filtering:
  oidset: don't return value from oidset_init

Doc hotfix.

* tg/worktree-create-tracking:
  Documentation/git-worktree.txt: add missing `

Hot fix to a test.

* js/test-with-ws-in-path:
  t3900: add some more quotes

Signed-off-by: NAlexander Shopov <ash@kambanaria.org>

Signed-off-by: NRalf Thielow <ralf.thielow@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

In 89a70b80 ("t0302 & t3900: add forgotten quotes", 2018-01-03), quotes
were added to protect against spaces in $HOME. In the test_when_finished
command, two files are deleted which must be quoted individually.

[jc: with \$HOME in the test_when_finished command quoted, as
pointed out by j6t].
Signed-off-by: NBeat Bolli <dev+git@drbeat.li>
Helped-by: NJohannes Sixt <j6t@kdbg.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

* js/perl-path-workaround-in-tests:
  mingw: handle GITPERLLIB in t0021 in a Windows-compatible way

"git merge -s recursive" did not correctly abort when the index is
dirty, if the merged tree happened to be the same as the current
HEAD, which has been fixed.

* ew/empty-merge-with-dirty-index:
  merge-recursive: do not look at the index during recursive merge

A hotfix for a recent update that broke 'git bisect'.

* ma/bisect-leakfix:
  bisect: fix a regression causing a segfault

"git rebase -p -X<option>" did not propagate the option properly
down to underlying merge strategy backend.

* js/fix-merge-arg-quoting-in-rebase-p:
  rebase -p: fix quoting when calling `git merge`

Git's assumption that all path lists are colon-separated is not only
wrong on Windows, it is not even an assumption that is compatible with
POSIX.

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

In other words, we simply look whether there is a semicolon in
GITPERLLIB and split by semicolons if found instead of colons. This is
not fool-proof, of course, as the path list could consist of a single
path. But that is not the case in Git for Windows' test suite, there are
always two paths in GITPERLLIB.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Add Fangyi Zhou to zh_CN l10n team members.
Signed-off-by: NJiang Xin <worldhello.net@gmail.com>

Translate 72 messages (3288t0f0u) for git v2.16.0-rc1.
Signed-off-by: NJiang Xin <worldhello.net@gmail.com>
Reviewed-by: N依云 <lilydjwg@gmail.com>
Reviewed-by: NFangyi Zhou <fangyi.zhou@yuriko.moe>

* 'master' of git://github.com/nafmo/git-l10n-sv:
  l10n: sv.po: Update Swedish translation (3288t0f0u)

* 'russian-l10n' of https://github.com/DJm00n/git-po-ru:
  l10n: ru.po: update Russian translation

Doc update.

* jk/doc-diff-options:
  docs/diff-options: clarify scope of diff-filter types

Test fix for a topic already in 'master'.

* bw/protocol-v1:
  http: fix v1 protocol tests with apache httpd < 2.4

* sg/travis-check-untracked:
  travis-ci: check that all build artifacts are .gitignore-d
  travis-ci: don't store P4 and Git LFS in the working tree

Test fixes.

* js/test-with-ws-in-path:
  t0302 & t3900: add forgotten quotes
  Allow the test suite to pass in a directory whose name contains spaces

Doc readability update.

* bc/submitting-patches-in-asciidoc:
  doc/SubmittingPatches: improve text formatting

Avoid repeatedly testing the same tree in TravisCI that have been
tested successfully already.

* sg/travis-skip-identical-test:
  travis-ci: record and skip successfully built trees
  travis-ci: create the cache directory early in the build process
  travis-ci: print the "tip of branch is exactly at tag" message in color

Tying loose ends for the recent integration work of
collision-detecting SHA-1 implementation.

* ab/dc-sha1-loose-ends:
  Makefile: NO_OPENSSL=1 should no longer imply BLK_SHA1=1

Assorted updates for TravisCI integration.

* sg/travis-fixes:
  travis-ci: only print test failures if there are test results available
  travis-ci: save prove state for the 32 bit Linux build
  travis-ci: don't install default addon packages for the 32 bit Linux build
  travis-ci: fine tune the use of 'set -x' in 'ci/*' scripts

Signed-off-by: NPeter Krefting <peter@softwolves.pp.se>

* 'js/misc-git-gui-stuff' of ../git-gui:
  git-gui: allow Ctrl+T to toggle multiple paths
  git-gui: fix exception when trying to stage with empty file list
  git-gui: avoid exception upon Ctrl+T in an empty list
  git gui: fix staging a second line to a 1-line file

It is possible to select multiple files in the "Unstaged Changes" and
the "Staged Changes" lists. But when hitting Ctrl+T, surprisingly only
one entry is handled, not all selected ones.

Let's just use the same code path as for the "Stage To Commit" and the
"Unstage From Commit" menu items.

This fixes https://github.com/git-for-windows/git/issues/1012Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If there is nothing to stage, there is nothing to stage. Let's not try
to, even if the file list contains nothing at all.

This fixes https://github.com/git-for-windows/git/issues/1075Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>