Code

git.git
13 years agoMerge branch 'bc/maint-submodule-fix-parked' into maint
Junio C Hamano [Mon, 30 May 2011 07:09:36 +0000 (00:09 -0700)]
Merge branch 'bc/maint-submodule-fix-parked' into maint

* bc/maint-submodule-fix-parked:
  git-submodule.sh: separate parens by a space to avoid confusing some shells

13 years agoMerge branch 'bc/maint-api-doc-parked' into maint
Junio C Hamano [Mon, 30 May 2011 07:03:52 +0000 (00:03 -0700)]
Merge branch 'bc/maint-api-doc-parked' into maint

* bc/maint-api-doc-parked:
  Documentation/technical/api-diff.txt: correct name of diff_unmerge()

13 years agoMerge branch 'jn/run-command-error-failure' into maint
Junio C Hamano [Mon, 30 May 2011 02:08:51 +0000 (19:08 -0700)]
Merge branch 'jn/run-command-error-failure' into maint

* jn/run-command-error-failure:
  run-command: handle short writes and EINTR in die_child
  tests: check error message from run_command

13 years agogit-submodule.sh: separate parens by a space to avoid confusing some shells
Brandon Casey [Thu, 26 May 2011 20:52:04 +0000 (13:52 -0700)]
git-submodule.sh: separate parens by a space to avoid confusing some shells

Some shells interpret '(( ))' according to the rules for arithmetic
expansion.  This may not follow POSIX, but is prevalent in commonly used
shells.  Bash does not have a problem with this particular instance of
'((', likely because it is not followed by a '))', but the public domain
ksh does, and so does ksh on IRIX 6.5.

So, add a space between the parenthesis to avoid confusing these shells.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoDocumentation/technical/api-diff.txt: correct name of diff_unmerge()
Brandon Casey [Thu, 26 May 2011 20:46:56 +0000 (13:46 -0700)]
Documentation/technical/api-diff.txt: correct name of diff_unmerge()

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoGit 1.7.5.3 v1.7.5.3
Junio C Hamano [Thu, 26 May 2011 16:45:29 +0000 (09:45 -0700)]
Git 1.7.5.3

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'maint-1.7.4' into maint
Junio C Hamano [Thu, 26 May 2011 17:29:24 +0000 (10:29 -0700)]
Merge branch 'maint-1.7.4' into maint

* maint-1.7.4:

13 years agoMerge branch 'jk/git-connection-deadlock-fix' into maint-1.7.4
Junio C Hamano [Thu, 26 May 2011 17:28:10 +0000 (10:28 -0700)]
Merge branch 'jk/git-connection-deadlock-fix' into maint-1.7.4

* jk/git-connection-deadlock-fix:
  test core.gitproxy configuration
  send-pack: avoid deadlock on git:// push with failed pack-objects
  connect: let callers know if connection is a socket
  connect: treat generic proxy processes like ssh processes

Conflicts:
connect.c

13 years agoMerge branch 'js/maint-send-pack-stateless-rpc-deadlock-fix' into maint-1.7.4
Junio C Hamano [Thu, 26 May 2011 17:27:55 +0000 (10:27 -0700)]
Merge branch 'js/maint-send-pack-stateless-rpc-deadlock-fix' into maint-1.7.4

* js/maint-send-pack-stateless-rpc-deadlock-fix:
  sideband_demux(): fix decl-after-stmt
  send-pack: unbreak push over stateless rpc
  send-pack: avoid deadlock when pack-object dies early

13 years agoMerge branch 'jk/maint-upload-pack-shallow' into maint-1.7.4
Junio C Hamano [Thu, 26 May 2011 17:27:29 +0000 (10:27 -0700)]
Merge branch 'jk/maint-upload-pack-shallow' into maint-1.7.4

* jk/maint-upload-pack-shallow:
  upload-pack: start pack-objects before async rev-list

13 years agoMerge branch 'jm/maint-diff-words-with-sbe' into maint
Junio C Hamano [Thu, 26 May 2011 16:43:00 +0000 (09:43 -0700)]
Merge branch 'jm/maint-diff-words-with-sbe' into maint

* jm/maint-diff-words-with-sbe:
  do not read beyond end of malloc'd buffer

13 years agoMerge branch 'kk/maint-prefix-in-config-mak' into maint
Junio C Hamano [Thu, 26 May 2011 16:42:12 +0000 (09:42 -0700)]
Merge branch 'kk/maint-prefix-in-config-mak' into maint

* kk/maint-prefix-in-config-mak:
  Honor $(prefix) set in config.mak* when defining ETC_GIT*
  Revert "Honor $(prefix) set in config.mak* when defining ETC_GIT* and sysconfdir"
  Honor $(prefix) set in config.mak* when defining ETC_GIT* and sysconfdir

13 years agoMerge branch 'mg/diff-uiconfig-doc' into maint
Junio C Hamano [Thu, 26 May 2011 16:41:11 +0000 (09:41 -0700)]
Merge branch 'mg/diff-uiconfig-doc' into maint

* mg/diff-uiconfig-doc:
  config.txt,diff-options.txt: porcelain vs. plumbing for color.diff

13 years agoMerge branch 'ft/gitweb-tar-with-gzip-n' into maint
Junio C Hamano [Thu, 26 May 2011 16:40:50 +0000 (09:40 -0700)]
Merge branch 'ft/gitweb-tar-with-gzip-n' into maint

* ft/gitweb-tar-with-gzip-n:
  gitweb: supply '-n' to gzip for identical output

13 years agoMerge branch 'ss/doc-svn' into maint
Junio C Hamano [Thu, 26 May 2011 16:39:40 +0000 (09:39 -0700)]
Merge branch 'ss/doc-svn' into maint

* ss/doc-svn:
  remove noise and inaccuracies from git-svn docs

13 years agoMerge branch 'jn/format-patch-doc' into maint
Junio C Hamano [Thu, 26 May 2011 16:39:33 +0000 (09:39 -0700)]
Merge branch 'jn/format-patch-doc' into maint

* jn/format-patch-doc:
  Documentation/format-patch: suggest Toggle Word Wrap add-on for Thunderbird
  Documentation: publicize hints for sending patches with GMail
  Documentation: publicize KMail hints for sending patches inline
  Documentation: hints for sending patches inline with Thunderbird
  Documentation: explain how to check for patch corruption

13 years agoMerge branch 'jc/maint-pathspec-stdin-and-cmdline' into maint
Junio C Hamano [Thu, 26 May 2011 16:38:44 +0000 (09:38 -0700)]
Merge branch 'jc/maint-pathspec-stdin-and-cmdline' into maint

* jc/maint-pathspec-stdin-and-cmdline:
  setup_revisions(): take pathspec from command line and --stdin correctly

13 years agoMerge branch 'jk/cherry-pick-root-with-resolve' into maint
Junio C Hamano [Thu, 26 May 2011 16:37:41 +0000 (09:37 -0700)]
Merge branch 'jk/cherry-pick-root-with-resolve' into maint

* jk/cherry-pick-root-with-resolve:
  t3503: test cherry picking and reverting root commits
  revert: allow reverting a root commit
  cherry-pick: handle root commits with external strategies

13 years agoMerge branch 'rg/copy-gecos-username' into maint
Junio C Hamano [Thu, 26 May 2011 16:37:04 +0000 (09:37 -0700)]
Merge branch 'rg/copy-gecos-username' into maint

* rg/copy-gecos-username:
  copy_gecos: fix not adding nlen to len when processing "&"

13 years agoMerge branch 'fc/completion-zsh' into maint
Junio C Hamano [Thu, 26 May 2011 16:36:33 +0000 (09:36 -0700)]
Merge branch 'fc/completion-zsh' into maint

* fc/completion-zsh:
  git-completion: fix regression in zsh support

13 years agoMerge branch 'jk/git-connection-deadlock-fix' into maint
Junio C Hamano [Thu, 26 May 2011 16:33:25 +0000 (09:33 -0700)]
Merge branch 'jk/git-connection-deadlock-fix' into maint

* jk/git-connection-deadlock-fix:
  test core.gitproxy configuration
  send-pack: avoid deadlock on git:// push with failed pack-objects
  connect: let callers know if connection is a socket
  connect: treat generic proxy processes like ssh processes

Conflicts:
connect.c

13 years agoMerge branch 'js/maint-send-pack-stateless-rpc-deadlock-fix' into maint
Junio C Hamano [Thu, 26 May 2011 16:32:14 +0000 (09:32 -0700)]
Merge branch 'js/maint-send-pack-stateless-rpc-deadlock-fix' into maint

* js/maint-send-pack-stateless-rpc-deadlock-fix:
  sideband_demux(): fix decl-after-stmt
  send-pack: unbreak push over stateless rpc
  send-pack: avoid deadlock when pack-object dies early

13 years agoMerge branch 'svn-fe-maint' of git://repo.or.cz/git/jrn into maint
Junio C Hamano [Thu, 26 May 2011 15:52:11 +0000 (08:52 -0700)]
Merge branch 'svn-fe-maint' of git://repo.or.cz/git/jrn into maint

* 'svn-fe-maint' of git://repo.or.cz/git/jrn:
  Revert "t0081 (line-buffer): add buffering tests"

13 years agoinit/clone: remove short option -L and document --separate-git-dir
Nguyen Thai Ngoc Duy [Tue, 24 May 2011 16:40:32 +0000 (23:40 +0700)]
init/clone: remove short option -L and document --separate-git-dir

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agodo not read beyond end of malloc'd buffer
Jim Meyering [Fri, 20 May 2011 17:20:12 +0000 (19:20 +0200)]
do not read beyond end of malloc'd buffer

With diff.suppress-blank-empty=true, "git diff --word-diff" would
output data that had been read from uninitialized heap memory.
The problem was that fn_out_consume did not account for the
possibility of a line with length 1, i.e., the empty context line
that diff.suppress-blank-empty=true converts from " \n" to "\n".
Since it assumed there would always be a prefix character (the space),
it decremented "len" unconditionally, thus passing len=0 to emit_line,
which would then blindly call emit_line_0 with len=-1 which would
pass that value on to fwrite as SIZE_MAX.  Boom.

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agogit-svn: Fix git svn log --show-commit
Michael J Gruber [Fri, 20 May 2011 11:16:34 +0000 (13:16 +0200)]
git-svn: Fix git svn log --show-commit

git svn log --show-commit had no tests and, consequently, no attention
by the author of

b1b4755 (git-log: put space after commit mark, 2011-03-10)

who kept git svn log working only without --show-commit.

Introduce a test and fix it.

Reported-by: Bernt Hansen <bernt@norang.ca>
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoGit 1.7.5.2 v1.7.5.2
Junio C Hamano [Fri, 20 May 2011 03:30:44 +0000 (20:30 -0700)]
Git 1.7.5.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoprovide a copy of the LGPLv2.1
Jonathan Nieder [Thu, 19 May 2011 15:14:25 +0000 (10:14 -0500)]
provide a copy of the LGPLv2.1

The LGPL seems to require providing a copy of the license when
distributing xdiff, compat/fnmatch, and so on, or altering the license
notices to refer to the GPL intead.  Since we don't want to do the
latter, let's do the former.  It's nice to let people know their
rights anyway.

Inspired-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agotest core.gitproxy configuration
Jeff King [Wed, 18 May 2011 08:57:44 +0000 (04:57 -0400)]
test core.gitproxy configuration

This is just a basic sanity test to see whether
core.gitproxy works at all. Until now, we were not testing
anywhere.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agocopy_gecos: fix not adding nlen to len when processing "&"
Rafael Gieschke [Mon, 16 May 2011 20:08:21 +0000 (22:08 +0200)]
copy_gecos: fix not adding nlen to len when processing "&"

nlen has to be added to len when inserting (capitalized) pw_name as
substitution for "&" in pw_gecos. Otherwise, pw_gecos will be truncated
and data might be written beyond name+sz.

Signed-off-by: Rafael Gieschke <rafael@gieschke.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'js/maint-1.6.6-send-pack-stateless-rpc-deadlock-fix' into js/maint...
Junio C Hamano [Tue, 17 May 2011 00:01:03 +0000 (17:01 -0700)]
Merge branch 'js/maint-1.6.6-send-pack-stateless-rpc-deadlock-fix' into js/maint-send-pack-stateless-rpc-deadlock-fix

* js/maint-1.6.6-send-pack-stateless-rpc-deadlock-fix:
  sideband_demux(): fix decl-after-stmt

13 years agoUpdate draft release notes to 1.7.5.2
Junio C Hamano [Mon, 16 May 2011 23:44:50 +0000 (16:44 -0700)]
Update draft release notes to 1.7.5.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'jn/maint-format-patch-doc' into maint
Junio C Hamano [Mon, 16 May 2011 23:39:09 +0000 (16:39 -0700)]
Merge branch 'jn/maint-format-patch-doc' into maint

* jn/maint-format-patch-doc:
  Documentation: describe the format of messages with inline patches

13 years agoMerge branch 'ss/cherry-pick-x-doc' into maint
Junio C Hamano [Mon, 16 May 2011 23:38:56 +0000 (16:38 -0700)]
Merge branch 'ss/cherry-pick-x-doc' into maint

* ss/cherry-pick-x-doc:
  doc: Clarify that "cherry-pick -x" does not use "git notes"

13 years agoMerge branch 'vr/merge-base-doc' into maint
Junio C Hamano [Mon, 16 May 2011 23:38:46 +0000 (16:38 -0700)]
Merge branch 'vr/merge-base-doc' into maint

* vr/merge-base-doc:
  Restructure documentation for git-merge-base.
  Documentation: update to git-merge-base --octopus

13 years agoMerge branch 'sr/maint-fast-import-tighten-option-parsing' into maint
Junio C Hamano [Mon, 16 May 2011 23:38:16 +0000 (16:38 -0700)]
Merge branch 'sr/maint-fast-import-tighten-option-parsing' into maint

* sr/maint-fast-import-tighten-option-parsing:
  fast-import: fix option parser for no-arg options

13 years agoMerge branch 'jc/t1506-shell-param-expansion-gotcha' into maint
Junio C Hamano [Mon, 16 May 2011 23:37:54 +0000 (16:37 -0700)]
Merge branch 'jc/t1506-shell-param-expansion-gotcha' into maint

* jc/t1506-shell-param-expansion-gotcha:
  t1507: avoid "${parameter<op>'word'}" inside double-quotes

13 years agoMerge branch 'jc/fix-add-u-unmerged' into maint
Junio C Hamano [Mon, 16 May 2011 23:37:33 +0000 (16:37 -0700)]
Merge branch 'jc/fix-add-u-unmerged' into maint

* jc/fix-add-u-unmerged:
  Fix "add -u" that sometimes fails to resolve unmerged paths

Conflicts:
builtin/add.c

13 years agoMerge branch 'jn/gitweb-dependency' into maint
Junio C Hamano [Mon, 16 May 2011 23:37:12 +0000 (16:37 -0700)]
Merge branch 'jn/gitweb-dependency' into maint

* jn/gitweb-dependency:
  Remove gitweb/gitweb.cgi and other legacy targets from main Makefile
  git-instaweb: Simplify build dependency on gitweb

13 years agoMerge branch 'jc/maint-branch-mergeoptions' into maint
Junio C Hamano [Mon, 16 May 2011 23:37:07 +0000 (16:37 -0700)]
Merge branch 'jc/maint-branch-mergeoptions' into maint

* jc/maint-branch-mergeoptions:
  merge: make branch.<name>.mergeoptions correctly override merge.<option>

Conflicts:
builtin/merge.c

13 years agoMerge branch 'jc/maint-add-p-overlapping-hunks' into maint
Junio C Hamano [Mon, 16 May 2011 23:36:46 +0000 (16:36 -0700)]
Merge branch 'jc/maint-add-p-overlapping-hunks' into maint

* jc/maint-add-p-overlapping-hunks:
  t3701: add-p-fix makes the last test to pass
  "add -p": work-around an old laziness that does not coalesce hunks
  add--interactive.perl: factor out repeated --recount option
  t3701: Editing a split hunk in an "add -p" session
  add -p: 'q' should really quit

13 years agoDocumentation/git-fsck.txt: fix typo: unreadable -> unreachable
Jim Meyering [Mon, 16 May 2011 18:23:35 +0000 (20:23 +0200)]
Documentation/git-fsck.txt: fix typo: unreadable -> unreachable

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agosend-pack: avoid deadlock on git:// push with failed pack-objects
Jeff King [Mon, 16 May 2011 06:52:57 +0000 (02:52 -0400)]
send-pack: avoid deadlock on git:// push with failed pack-objects

Commit 09c9957c fixes a deadlock in which pack-objects
fails, the remote end is still waiting for pack data, and we
are still waiting for the remote end to say something (see
that commit for a much more in-depth explanation).

We solved the problem there by making sure the output pipe
is closed on error; thus the remote sees EOF, and proceeds
to complain and close its end of the connection.

However, in the special case of push over git://, we don't
have a pipe, but rather a full-duplex socket, with another
dup()-ed descriptor in place of the second half of the pipe.
In this case, closing the second descriptor signals nothing
to the remote end, and we still deadlock.

This patch calls shutdown() explicitly to signal EOF to the
other side.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoconnect: let callers know if connection is a socket
Jeff King [Mon, 16 May 2011 06:52:11 +0000 (02:52 -0400)]
connect: let callers know if connection is a socket

They might care because they want to do a half-duplex close.
With pipes, that means simply closing the output descriptor;
with a socket, you must actually call shutdown.

Instead of exposing the magic no_fork child_process struct,
let's encapsulate the test in a function.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoconnect: treat generic proxy processes like ssh processes
Jeff King [Mon, 16 May 2011 06:46:07 +0000 (02:46 -0400)]
connect: treat generic proxy processes like ssh processes

The git_connect function returns two ends of a pipe for
talking with a remote, plus a struct child_process
representing the other end of the pipe. If we have a direct
socket connection, then this points to a special "no_fork"
child process.

The code path for doing git-over-pipes or git-over-ssh sets
up this child process to point to the child git command or
the ssh process. When we call finish_connect eventually, we
check wait() on the command and report its return value.

The code path for git://, on the other hand, always sets it
to no_fork. In the case of a direct TCP connection, this
makes sense; we have no child process. But in the case of a
proxy command (configured by core.gitproxy), we do have a
child process, but we throw away its pid, and therefore
ignore its return code.

Instead, let's keep that information in the proxy case, and
respect its return code, which can help catch some errors
(though depending on your proxy command, it will be errors
reported by the proxy command itself, and not propagated
from git commands. Still, it is probably better to propagate
such errors than to ignore them).

It also means that the child_process field can reliably be
used to determine whether the returned descriptors are
actually a full-duplex socket, which means we should be
using shutdown() instead of a simple close.

Signed-off-by: Jeff King <peff@peff.net>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agosideband_demux(): fix decl-after-stmt
Junio C Hamano [Mon, 16 May 2011 23:19:49 +0000 (16:19 -0700)]
sideband_demux(): fix decl-after-stmt

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agot3503: test cherry picking and reverting root commits
Jeff King [Thu, 12 May 2011 11:10:07 +0000 (07:10 -0400)]
t3503: test cherry picking and reverting root commits

We already tested cherry-picking a root commit, but only
with the internal merge-recursive strategy. Let's also test
the recently-allowed reverting of a root commit, as well as
testing with external strategies (which until recently
triggered a segfault).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agorevert: allow reverting a root commit
Jeff King [Thu, 12 May 2011 11:09:55 +0000 (07:09 -0400)]
revert: allow reverting a root commit

Although it is probably an uncommon operation, there is no
reason to disallow it, as it works just fine. It is the
reverse of a cherry-pick of a root commit, which is already
allowed.

We do have to tweak one check on whether we have a merge
commit, which assumed we had at least one parent.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agocherry-pick: handle root commits with external strategies
Jeff King [Thu, 12 May 2011 11:09:46 +0000 (07:09 -0400)]
cherry-pick: handle root commits with external strategies

The merge-recursive strategy already handles root commits;
it cherry-picks the difference between the empty tree and
the root commit's tree.

However, for external strategies, we dereference NULL and
segfault while building the argument list. Instead, let's
handle this by passing the empty tree sha1 to the merge
script.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoUpdate draft release notes to 1.7.5.2
Junio C Hamano [Sun, 15 May 2011 23:11:55 +0000 (16:11 -0700)]
Update draft release notes to 1.7.5.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'cn/format-patch-quiet' into maint
Junio C Hamano [Sun, 15 May 2011 23:10:49 +0000 (16:10 -0700)]
Merge branch 'cn/format-patch-quiet' into maint

* cn/format-patch-quiet:
  format-patch: document --quiet option
  format-patch: don't pass on the --quiet flag

13 years agoMerge branch 'jm/mergetool-submodules' into maint
Junio C Hamano [Sun, 15 May 2011 22:57:16 +0000 (15:57 -0700)]
Merge branch 'jm/mergetool-submodules' into maint

* jm/mergetool-submodules:
  mergetool: Teach about submodules

13 years agoMerge branch 'jk/format-patch-quote-special-in-from' into maint
Junio C Hamano [Sun, 15 May 2011 22:56:44 +0000 (15:56 -0700)]
Merge branch 'jk/format-patch-quote-special-in-from' into maint

* jk/format-patch-quote-special-in-from:
  pretty: quote rfc822 specials in email addresses

13 years agoMerge branch 'vh/git-svn-doc' into maint
Junio C Hamano [Sun, 15 May 2011 22:52:40 +0000 (15:52 -0700)]
Merge branch 'vh/git-svn-doc' into maint

* vh/git-svn-doc:
  git-svn.txt: small typeface improvements
  git-svn.txt: move option descriptions
  git-svn.txt: fix usage of --add-author-from

13 years agogit_open_noatime(): drop unused parameter
Junio C Hamano [Sun, 15 May 2011 19:16:29 +0000 (12:16 -0700)]
git_open_noatime(): drop unused parameter

Since commit c793430 (Limit file descriptors used by packs, 2011-02-28),
the extra parameter added in f2e872aa (Work around EMFILE when there are
too many pack files, 2010-11-01) is not used anymore.

Remove it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
13 years agosha1_file: typofix
Junio C Hamano [Sun, 15 May 2011 19:16:03 +0000 (12:16 -0700)]
sha1_file: typofix

The number zero is spelled "zero", not "zer0".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoadd, merge, diff: do not use strcasecmp to compare config variable names
Jonathan Nieder [Sat, 14 May 2011 20:19:21 +0000 (15:19 -0500)]
add, merge, diff: do not use strcasecmp to compare config variable names

The config machinery already makes section and variable names
lowercase when parsing them, so using strcasecmp for comparison just
feels wasteful.  No noticeable change intended.

Noticed-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoPrepare for 1.7.5.2
Junio C Hamano [Fri, 13 May 2011 17:57:09 +0000 (10:57 -0700)]
Prepare for 1.7.5.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'aw/maint-rebase-i-p-no-ff' into maint
Junio C Hamano [Fri, 13 May 2011 17:45:21 +0000 (10:45 -0700)]
Merge branch 'aw/maint-rebase-i-p-no-ff' into maint

* aw/maint-rebase-i-p-no-ff:
  git-rebase--interactive.sh: preserve-merges fails on merges created with no-ff

13 years agoMerge branch 'js/blame-parsename' into maint
Junio C Hamano [Fri, 13 May 2011 17:45:00 +0000 (10:45 -0700)]
Merge branch 'js/blame-parsename' into maint

* js/blame-parsename:
  t/annotate-tests: Use echo & cat instead of sed
  blame: tolerate bogus e-mail addresses a bit better

13 years agoMerge branch 'gr/cvsimport-alternative-cvspass-location' into maint
Junio C Hamano [Fri, 13 May 2011 17:44:54 +0000 (10:44 -0700)]
Merge branch 'gr/cvsimport-alternative-cvspass-location' into maint

* gr/cvsimport-alternative-cvspass-location:
  Look for password in both CVS and CVSNT password files.

13 years agoMerge branch 'cj/p4merge' into maint
Junio C Hamano [Fri, 13 May 2011 17:44:46 +0000 (10:44 -0700)]
Merge branch 'cj/p4merge' into maint

* cj/p4merge:
  Pass empty file to p4merge where no base is suitable.

13 years agoMerge branch 'jk/merge-one-file-working-tree' into maint
Junio C Hamano [Fri, 13 May 2011 17:44:19 +0000 (10:44 -0700)]
Merge branch 'jk/merge-one-file-working-tree' into maint

* jk/merge-one-file-working-tree:
  merge-one-file: fix broken merges with alternate work trees
  add tests for merge-index / merge-one-file

13 years agoMerge branch 'jc/fix-diff-files-unmerged' into maint
Junio C Hamano [Fri, 13 May 2011 17:41:54 +0000 (10:41 -0700)]
Merge branch 'jc/fix-diff-files-unmerged' into maint

* jc/fix-diff-files-unmerged:
  diff-files: show unmerged entries correctly
  diff: remove often unused parameters from diff_unmerge()
  diff.c: return filepair from diff_unmerge()
  test: use $_z40 from test-lib

13 years agoMerge branch 'mz/maint-rename-unmerged' into maint
Junio C Hamano [Fri, 13 May 2011 17:41:24 +0000 (10:41 -0700)]
Merge branch 'mz/maint-rename-unmerged' into maint

* mz/maint-rename-unmerged:
  diffcore-rename: don't consider unmerged path as source

13 years agot5400: Fix a couple of typos
Johan Herland [Fri, 13 May 2011 16:43:29 +0000 (18:43 +0200)]
t5400: Fix a couple of typos

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'jc/maint-1.7.4-pathspec-stdin-and-cmdline'
Junio C Hamano [Wed, 11 May 2011 22:05:01 +0000 (15:05 -0700)]
Merge branch 'jc/maint-1.7.4-pathspec-stdin-and-cmdline'

Update the fix for 1.7.5 maintenance track.

* jc/maint-1.7.4-pathspec-stdin-and-cmdline:
  setup_revisions(): take pathspec from command line and --stdin correctly

13 years agoMerge branch 'jc/maint-1.6.6-pathspec-stdin-and-cmdline'
Junio C Hamano [Wed, 11 May 2011 21:57:45 +0000 (14:57 -0700)]
Merge branch 'jc/maint-1.6.6-pathspec-stdin-and-cmdline'

Update the fix for 1.7.4 maintenance track.

* jc/maint-1.6.6-pathspec-stdin-and-cmdline:
  setup_revisions(): take pathspec from command line and --stdin correctly

13 years agosetup_revisions(): take pathspec from command line and --stdin correctly
Junio C Hamano [Wed, 11 May 2011 21:01:19 +0000 (14:01 -0700)]
setup_revisions(): take pathspec from command line and --stdin correctly

When the command line has "--" disambiguator, we take the remainder of
argv[] as "prune_data", but when --stdin is given at the same time,
we need to append to the existing prune_data and end up attempting to
realloc(3) it.  That would not work.

Fix it by consistently using append_prune_data() throughout the input
processing.  Also avoid counting the number of existing paths in the
function over and over again.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agogit-completion: fix regression in zsh support
Felipe Contreras [Tue, 10 May 2011 12:20:39 +0000 (15:20 +0300)]
git-completion: fix regression in zsh support

The zsh support of git-completion script in contrib/ is broken for current
versions of zsh, and does not notice when there's a subcommand.

For example: "git log origi<TAB>" gives no completions because it would
try to find a "git origi..." command. This will be fixed by zsh 4.3.12,
but for now we can workaround it by backporting the same fix as zsh folks
implemented.

The problem started after commit v1.7.4-rc0~11^2~2 (bash: get
--pretty=m<tab> completion to work with bash v4), which introduced
_get_comp_words_by_ref() that comes from bash-completion[1] scripts, and
relies on the 'words' variable.

However, it turns out 'words' is a special variable used by zsh
completion. From zshcompwid(1):

  [...] the parameters are reset on each function exit (including nested
  function calls from within the completion widget) to the values they had
  when the function was entered.

As a result, subcommand words are lost.  Ouch.

This is now fixed in the latest master branch of zsh[2] by simply defining
'words' as hidden (typeset -h), which removes the special meaning inside
the emulated bash function. So let's do the same.

Jonathan Nieder helped on the commit message.

  [1] http://bash-completion.alioth.debian.org/
  [2] http://zsh.git.sourceforge.net/git/gitweb.cgi?p=zsh/zsh;a=commitdiff;h=e880604f029088f32fb1ecc39213d720ae526aaa

Reported-by: Stefan Haller <lists@haller-berlin.de>
Comments-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoHonor $(prefix) set in config.mak* when defining ETC_GIT*
Johannes Sixt [Mon, 9 May 2011 08:24:55 +0000 (10:24 +0200)]
Honor $(prefix) set in config.mak* when defining ETC_GIT*

Notice that the prefix specified for the build influenced the definitions
of ETC_GITCONFIG and ETC_GITATTRIBUTES only when it was exactly '/usr'.
Kacper Kornet noticed that this was furthermore only the case when the
build was triggered using 'make prefix=/usr', i.e., the prefix was given
on the command line; it did not work when the prefix was specified in
config.mak because this file is included much later in the Makefile.

To fix this, move the conditional after the inclusion of config.mak.

Additionally, it is desirable to specify the etc directory for a build
(for example, a build with prefix /usr/local may still want to have the
system configuration in /etc/gitconfig). For this purpose, promote the
variable 'sysconfdir' from a helper variable to a configuration
variable. The prefix check that was moved must now be wrapped so that it
does not override sysconfdir setting given in config.mak.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoRevert "Honor $(prefix) set in config.mak* when defining ETC_GIT* and sysconfdir"
Junio C Hamano [Mon, 9 May 2011 22:12:13 +0000 (15:12 -0700)]
Revert "Honor $(prefix) set in config.mak* when defining ETC_GIT* and sysconfdir"

This reverts commit 2910bf56a4ffc13c398fb04ba32910cb3b724091, as it
does not really solve the issue of making $(sysconfigdir) any more
useful than it currently is.

13 years agot1507: avoid "${parameter<op>'word'}" inside double-quotes
Junio C Hamano [Mon, 9 May 2011 04:43:20 +0000 (21:43 -0700)]
t1507: avoid "${parameter<op>'word'}" inside double-quotes

Kacper Kornet noticed that a $variable in "word" in the above construct is
not substituted by his pdksh.  Modern POSIX compliant shells (e.g. dash,
ksh, bash) all seem to interpret POSIX "2.6.2 Parameter Expansion" that
says "word shall be subjected to tilde expansion, parameter expansion,
command substitution, and arithmetic expansion" in ${parameter<op>word},
to mean that the word is expanded as if it appeared in dq pairs, so if the
word were "'$variable'" (sans dq) it would expand to a single quote, the
value of the $variable and then a single quote.

Johannes Sixt reports that the behavior of quoting at the right of :- when
the ${...:-...} expansion appears in double-quotes was debated recently at
length at the Austin group.  We can avoid this issue and future-proof the
test by a slight rewrite.

Helped-by: Johannes Sixt <j.sixt@viscovery.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agot3701: add-p-fix makes the last test to pass
Junio C Hamano [Sun, 8 May 2011 20:43:04 +0000 (13:43 -0700)]
t3701: add-p-fix makes the last test to pass

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoRemove gitweb/gitweb.cgi and other legacy targets from main Makefile
Jakub Narebski [Sat, 7 May 2011 12:45:21 +0000 (14:45 +0200)]
Remove gitweb/gitweb.cgi and other legacy targets from main Makefile

Now that there is gitweb/Makefile, let's leave only "gitweb" and
"install-gitweb" targets in main Makefile.  Those targets just
delegate to gitweb's Makefile.

Requested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agogit-instaweb: Simplify build dependency on gitweb
Jakub Narebski [Sat, 7 May 2011 12:45:20 +0000 (14:45 +0200)]
git-instaweb: Simplify build dependency on gitweb

Since c0cb4ed (git-instaweb: Configure it to work with new gitweb
structure, 2010-05-28) git-instaweb does not re-create gitweb.cgi
etc., but makes use of installed gitweb.  Therefore simplify
git-instaweb dependency on gitweb subsystem in main Makefile from
'gitweb/gitweb.cgi gitweb/static/gitweb.css gitweb/static/gitweb.js'
to simply 'gitweb'.

This is preparation for splitting gitweb.perl script, and for
splitting gitweb.js (to be reassembled / combined on build).  This way
we don't have to duplicate parts of gitweb/Makefile in main
Makefile... it is also more correct description of git-instaweb
dependency.

Reported-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agomerge: make branch.<name>.mergeoptions correctly override merge.<option>
Junio C Hamano [Thu, 5 May 2011 00:42:51 +0000 (17:42 -0700)]
merge: make branch.<name>.mergeoptions correctly override merge.<option>

The parsing of the additional command line parameters supplied to
the branch.<name>.mergeoptions configuration variable was implemented
at the wrong stage.  If any merge-related variable came after we read
branch.<name>.mergeoptions, the earlier value was overwritten.

We should first read all the merge.* configuration, override them by
reading from branch.<name>.mergeoptions and then finally read from
the command line.

This patch should fix it, even though I now strongly suspect that
branch.<name>.mergeoptions that gives a single command line that
needs to be parsed was likely to be an ill-conceived idea to begin
with.  Sigh...

Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoRemove duplicated "is a"
João Britto [Fri, 6 May 2011 04:16:17 +0000 (01:16 -0300)]
Remove duplicated "is a"

Signed-off-by: João Britto <jabcalves@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agofast-import: fix option parser for no-arg options
Sverre Rabbelier [Thu, 5 May 2011 18:56:00 +0000 (20:56 +0200)]
fast-import: fix option parser for no-arg options

While refactoring the options parser in bc3c79a (fast-import: add
(non-)relative-marks feature, 2009-12-04), it was made too lenient
for options that take no argument, fix that.

Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'js/maint-1.6.6-send-pack-stateless-rpc-deadlock-fix' into js/maint...
Junio C Hamano [Thu, 5 May 2011 20:46:36 +0000 (13:46 -0700)]
Merge branch 'js/maint-1.6.6-send-pack-stateless-rpc-deadlock-fix' into js/maint-send-pack-stateless-rpc-deadlock-fix

* js/maint-1.6.6-send-pack-stateless-rpc-deadlock-fix:
  send-pack: unbreak push over stateless rpc

13 years agosend-pack: unbreak push over stateless rpc
Jeff King [Thu, 5 May 2011 06:18:45 +0000 (02:18 -0400)]
send-pack: unbreak push over stateless rpc

Commit 09c9957 (send-pack: avoid deadlock when pack-object
dies early, 2011-04-25) attempted to fix a hang in the
stateless rpc case by closing a file descriptor early, but
we still need that descriptor.

Basically the deadlock can happen when pack-objects fails,
and the descriptor to upstream is left open. We never send
the pack, so the upstream is left waiting for us to say
something, and we are left waiting for upstream to close the
connection.

In the non-rpc case, our descriptor points straight to the
upstream. We hand it off to run-command, which takes
ownership and closes the descriptor after pack-objects
finishes (whether it succeeds or not).

Commit 09c9957 tried to emulate that in the rpc case. That
isn't right, though. We actually have a descriptor going
back to the remote-helper, and we need to keep using it
after pack-objects is finished. Closing it early completely
breaks pushing via smart-http.

We still need to do something on error to signal the
remote-helper that we won't be sending any pack data
(otherwise we get the deadlock).  In an ideal world, we
would send a special packet back that says "Sorry, there was
an error". But the remote-helper doesn't understand any such
packet, so the best we can do is close the descriptor and
let it report that we hung up unexpectedly.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agot3701: fix here document
Junio C Hamano [Thu, 5 May 2011 18:28:52 +0000 (11:28 -0700)]
t3701: fix here document

A broken here-document was not caught because end of file is taken by
an implicit end of the here document (POSIX does not seem to say it is
an error to lack the delimiter), and everything in the test just turned
into a single "cat into a file".

Noticed-by: Kacper Kornet <draenog@pld-linux.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agogit-fast-import.txt: --relative-marks takes no parameter
Michael J Gruber [Thu, 5 May 2011 09:13:38 +0000 (11:13 +0200)]
git-fast-import.txt: --relative-marks takes no parameter

Remove spurious "=" after --relative-marks.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoshell: add missing initialization of argv0_path
Dima Sharov [Thu, 5 May 2011 06:40:17 +0000 (09:40 +0300)]
shell: add missing initialization of argv0_path

According to c6dfb39 (remote-curl: add missing initialization of
argv0_path, 2009-10-13), stand-alone programs (non-builtins)
must call git_extract_argv0_path(argv[0]) in order to help builds
that derive the installation prefix at runtime. Without this call,
the program segfaults (or raises an assertion failure).

Signed-off-by: Dima Sharov <git.avalakvista@gmail.com>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agot/annotate-tests: Use echo & cat instead of sed
Brian Gernhardt [Thu, 5 May 2011 04:43:37 +0000 (00:43 -0400)]
t/annotate-tests: Use echo & cat instead of sed

The use of the sed command "1i No robots allowed" caused the version
of sed in OS X to die with

   sed: 1: "1i "No robots allowed"\n": command i expects \ followed by
   text

Since this command was just trying to add a single line to the
beginning of the file, do the same with "echo" followed by "cat".

Unbreaks t8001 and t8002 on OS X 10.6.7

Signed-off-by: Brian Gernhardt <brian@gernhardtsoftware.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoGit 1.7.5.1 v1.7.5.1
Junio C Hamano [Wed, 4 May 2011 22:47:40 +0000 (15:47 -0700)]
Git 1.7.5.1

Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoMerge branch 'jh/dirstat' into maint
Junio C Hamano [Wed, 4 May 2011 21:59:07 +0000 (14:59 -0700)]
Merge branch 'jh/dirstat' into maint

* jh/dirstat:
  --dirstat: In case of renames, use target filename instead of source filename
  Teach --dirstat not to completely ignore rearranged lines within a file
  --dirstat-by-file: Make it faster and more correct
  --dirstat: Describe non-obvious differences relative to --stat or regular diff

13 years agoMerge branch 'sp/maint-clear-postfields' into maint
Junio C Hamano [Wed, 4 May 2011 21:58:56 +0000 (14:58 -0700)]
Merge branch 'sp/maint-clear-postfields' into maint

* sp/maint-clear-postfields:
  http: clear POSTFIELDS when initializing a slot

13 years agoMerge branch 'jk/maint-stash-oob' into maint
Junio C Hamano [Wed, 4 May 2011 21:58:42 +0000 (14:58 -0700)]
Merge branch 'jk/maint-stash-oob' into maint

* jk/maint-stash-oob:
  stash: fix false positive in the invalid ref test.
  stash: fix accidental apply of non-existent stashes

Conflicts:
t/t3903-stash.sh

13 years agoMerge branch 'jk/maint-upload-pack-shallow' into maint
Junio C Hamano [Wed, 4 May 2011 21:58:13 +0000 (14:58 -0700)]
Merge branch 'jk/maint-upload-pack-shallow' into maint

* jk/maint-upload-pack-shallow:
  upload-pack: start pack-objects before async rev-list

13 years agoMerge branch 'dm/stash-k-i-p' into maint
Junio C Hamano [Wed, 4 May 2011 21:57:49 +0000 (14:57 -0700)]
Merge branch 'dm/stash-k-i-p' into maint

* dm/stash-k-i-p:
  stash: ensure --no-keep-index and --patch can be used in any order
  stash: add two more tests for --no-keep-index

13 years agoMerge branch 'jc/pack-objects-bigfile' into maint
Junio C Hamano [Wed, 4 May 2011 21:57:38 +0000 (14:57 -0700)]
Merge branch 'jc/pack-objects-bigfile' into maint

* jc/pack-objects-bigfile:
  Teach core.bigfilethreashold to pack-objects

13 years agoMerge branch 'mg/reflog-with-options' into maint
Junio C Hamano [Wed, 4 May 2011 21:57:33 +0000 (14:57 -0700)]
Merge branch 'mg/reflog-with-options' into maint

* mg/reflog-with-options:
  reflog: fix overriding of command line options
  t/t1411: test reflog with formats
  builtin/log.c: separate default and setup of cmd_log_init()

13 years agoMerge branch 'jk/stash-loosen-safety' into maint
Junio C Hamano [Wed, 4 May 2011 21:57:15 +0000 (14:57 -0700)]
Merge branch 'jk/stash-loosen-safety' into maint

* jk/stash-loosen-safety:
  stash: drop dirty worktree check on apply

13 years agoMerge branch 'ar/clean-rmdir-empty' into maint
Junio C Hamano [Wed, 4 May 2011 21:57:06 +0000 (14:57 -0700)]
Merge branch 'ar/clean-rmdir-empty' into maint

* ar/clean-rmdir-empty:
  clean: unreadable directory may still be rmdir-able if it is empty

13 years agoMerge branch 'mg/sha1-path-advise' into maint
Junio C Hamano [Wed, 4 May 2011 21:56:51 +0000 (14:56 -0700)]
Merge branch 'mg/sha1-path-advise' into maint

* mg/sha1-path-advise:
  sha1_name: Suggest commit:./file for path in subdir
  t1506: factor out test for "Did you mean..."

13 years agogit-add.txt: document 'add.ignoreErrors'
Valentin Haenel [Wed, 4 May 2011 19:58:17 +0000 (21:58 +0200)]
git-add.txt: document 'add.ignoreErrors'

Signed-off-by: Valentin Haenel <valentin.haenel@gmx.de>
Noticed-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoPass empty file to p4merge where no base is suitable.
Ciaran Jessup [Sun, 1 May 2011 22:16:02 +0000 (23:16 +0100)]
Pass empty file to p4merge where no base is suitable.

Modify the p4merge client command to pass a reference to an empty file
instead of the local file when no base revision available.

In the situation where a merge tries to add a file from one branch
into a branch that already contains that file (by name), p4merge
currently seems to have successfully automatically resolved the
'conflict' when it is opened (correctly if the files differed by
just whitespace for example) but leaves the save button disabled. This
means the user of the p4merge client cannot commit the resolved
changes back to disk and merely exits, leaving the original
(merge-conflicted) file intact on the disk.

Provide an empty base file to p4merge so that it leaves the save
button enabled.  This will allow saving of the auto-resolution to
disk.

Signed-off-by: Ciaran Jessup <ciaranj@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agoLook for password in both CVS and CVSNT password files.
Guy Rouillier [Sun, 1 May 2011 05:33:52 +0000 (01:33 -0400)]
Look for password in both CVS and CVSNT password files.

In conn, if password is not passed on command line, look for a password
entry in both the CVS password file and the CVSNT password file.  If only
one file is found and the requested repository is in that file, or if both
files are found but the requested repository is found in only one file, use
the password from the single file containing the repository entry.  If both
files are found and the requested repository is found in both files, then
produce an error message.

The CVS password file separates tokens with a space character, while
the CVSNT password file separates tokens with an equal (=) character.
Add a sub find_password_entry that accepts the password file name
and a delimiter to eliminate code duplication.

Signed-off-by: Guy Rouillier <guyr@burntmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 years agomerge-one-file: fix broken merges with alternate work trees
Jeff King [Fri, 29 Apr 2011 22:24:32 +0000 (18:24 -0400)]
merge-one-file: fix broken merges with alternate work trees

The merge-one-file tool predates the invention of
GIT_WORK_TREE. By the time GIT_WORK_TREE was invented, most
people were using the merge-recursive strategy, which
handles resolving internally. Therefore these features have
had very little testing together.

For the most part, merge-one-file just works with
GIT_WORK_TREE; most of its heavy lifting is done by plumbing
commands which do respect GIT_WORK_TREE properly. The one
exception is a shell redirection which touches the worktree
directly, writing results to the wrong place in the presence
of a GIT_WORK_TREE variable.

This means that merges won't even fail; they will silently
produce incorrect results, throwing out the entire "theirs"
side of files which need content-level merging!

This patch makes merge-one-file chdir to the toplevel of the
working tree (and exit if we don't have one). This most
closely matches the assumption made by the original script
(before separate work trees were invented), and matches what
happens when the script is called as part of a merge
strategy.

While we're at it, we'll also error-check the call to cat.
Merging a file in a subdirectory could in fact fail, as the
redirection relies on the "checkout-index" call just prior
to create leading directories. But we never noticed, since
we ignored the error return from running cat.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>