These tests try to run "git commit" with various "forbidden" combinations
of options and expect the command to fail, but they do so without having
any change added to the index.  We wouldn't be able to catch breakages
that would allow these combinations by mistake with them because the
command will fail with "nothing to commit" anyway.

Make sure we have something added to the index before running the command.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

Recent releases of Redhat/Fedora are reported to ship Perl binary package
with some core modules stripped away (see http://lwn.net/Articles/477234/)
against the upstream Perl5 people's wishes. The Time::HiRes module used by
gitweb one of them.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

zsh adds a backslash (foo\ ) for each item in the COMPREPLY array if IFS
doesn't contain spaces. This issue has been reported[1], but there is no
solution yet.

This wasn't a problem due to another bug[2], which was fixed in zsh
version 4.3.12. After this change, 'git checkout ma<tab>' would resolve
to 'git checkout master\ '.

Aditionally, the introduction of __gitcomp_nl in commit a31e6262
(completion: optimize refs completion) in git also made the problem
apparent, as Matthieu Moy reported.

The simplest and most generic solution is to hide all the changes we do
to IFS, so that "foo \nbar " is recognized by zsh as "foo bar". This
works on versions of git before and after the introduction of
__gitcomp_nl (a31e6262), and versions of zsh before and after 4.3.12.

Once zsh is fixed, we should conditionally disable this workaround to
have the same benefits as bash users.

[1] http://www.zsh.org/mla/workers/2012/msg00053.html
[2] http://zsh.git.sourceforge.net/git/gitweb.cgi?p=zsh/zsh;a=commitdiff;h=2e25dfb8fd38dbef0a306282ffab1d343ce3ad8dSigned-off-by: NFelipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

Signed-off-by: NMichael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

* maint:
  Git 1.7.8.4
  Git 1.7.7.6
  diff-index: enable recursive pathspec matching in unpack_trees

Conflicts:
	GIT-VERSION-GEN

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

* maint-1.7.7:
  Git 1.7.7.6
  diff-index: enable recursive pathspec matching in unpack_trees

Conflicts:
	GIT-VERSION-GEN

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

The pathspec structure has a few bits of data to drive various operation
modes after we unified the pathspec matching logic in various codepaths.
For example, max_depth field is there so that "git grep" can limit the
output for files found in limited depth of tree traversal. Also in order
to show just the surface level differences in "git diff-tree", recursive
field stops us from descending into deeper level of the tree structure
when it is set to false, and this also affects pathspec matching when
we have wildcards in the pathspec.

The diff-index has always wanted the recursive behaviour, and wanted to
match pathspecs without any depth limit. But we forgot to do so when we
updated tree_entry_interesting() logic to unify the pathspec matching
logic.
Signed-off-by: NNguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* jc/pull-signed-tag-doc:
  pulling signed tag: add howto document

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

* jk/credentials:
  credential-cache: ignore "connection refused" errors
  unix-socket: do not let close() or chdir() clobber errno during cleanup
  credential-cache: report more daemon connection errors
  unix-socket: handle long socket pathnames

* nd/pathspec-recursion-cleanup:
  diff-index: enable recursive pathspec matching in unpack_trees
  Document limited recursion pathspec matching with wildcards

* mh/maint-show-ref-doc:
  git-show-ref doc: typeset regexp in fixed width font
  git-show-ref: fix escaping in asciidoc source

* tr/maint-word-diff-incomplete-line:
  word-diff: ignore '\ No newline at eof' marker

The credential-cache helper will try to connect to its
daemon over a unix socket. Originally, a failure to do so
was silently ignored, and we would either give up (if
performing a "get" or "erase" operation), or spawn a new
daemon (for a "store" operation).

But since 8ec6c8d7, we try to report more errors. We detect a
missing daemon by checking for ENOENT on our connection
attempt.  If the daemon is missing, we continue as before
(giving up or spawning a new daemon). For any other error,
we die and report the problem.

However, checking for ENOENT is not sufficient for a missing
daemon. We might also get ECONNREFUSED if a dead daemon
process left a stale socket. This generally shouldn't
happen, as the daemon cleans up after itself, but the daemon
may not always be given a chance to do so (e.g., power loss,
"kill -9").

The resulting state is annoying not just because the helper
outputs an extra useless message, but because it actually
blocks the helper from spawning a new daemon to replace the
stale socket.

Fix it by checking for ECONNREFUSED.
Signed-off-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* jn/maint-gitweb-grep-fix:
  gitweb: Harden "grep" search against filenames with ':'
  gitweb: Fix file links in "grep" search

The pathspec structure has a few bits of data to drive various operation
modes after we unified the pathspec matching logic in various codepaths.
For example, max_depth field is there so that "git grep" can limit the
output for files found in limited depth of tree traversal. Also in order
to show just the surface level differences in "git diff-tree", recursive
field stops us from descending into deeper level of the tree structure
when it is set to false, and this also affects pathspec matching when
we have wildcards in the pathspec.

The diff-index has always wanted the recursive behaviour, and wanted to
match pathspecs without any depth limit. But we forgot to do so when we
updated tree_entry_interesting() logic to unify the pathspec matching
logic.
Signed-off-by: NNguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

It's actually unlimited recursion if wildcards are active regardless
--max-depth
Signed-off-by: NNguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NMichael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Two "^" characters were incorrectly being interpreted as markup for
superscripting.  Fix them by writing them as attribute references
"{caret}".

Although a single "^" character in a paragraph cannot be
misinterpreted in this way, also write other "^" characters as
"{caret}" in the interest of good hygiene (unless they are in literal
paragraphs, of course, in which context attribute references are not
recognized).

Spell "{}" consistently, namely *not* quoted as "\{\}".  Since the
braces are empty, they cannot be interpreted as an attribute
reference, and either spelling is OK.  So arbitrarily choose one
variation and use it consistently.
Signed-off-by: NMichael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

* jc/request-pull-show-head-4:
  request-pull: use the real fork point when preparing the message

* tr/maint-mailinfo:
  mailinfo documentation: accurately describe non -k case

* ss/maint-msys-cvsexportcommit:
  git-cvsexportcommit: Fix calling Perl's rel2abs() on MSYS
  t9200: On MSYS, do not pass Windows-style paths to CVS

* jk/maint-upload-archive:
  archive: re-allow HEAD:Documentation on a remote invocation

* maint:
  Update draft release notes to 1.7.8.4
  Update draft release notes to 1.7.7.6
  Update draft release notes to 1.7.6.6
  thin-pack: try harder to use preferred base objects as base

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

* maint-1.7.7:
  Update draft release notes to 1.7.7.6
  Update draft release notes to 1.7.6.6
  thin-pack: try harder to use preferred base objects as base

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

* maint-1.7.6:
  Update draft release notes to 1.7.6.6
  thin-pack: try harder to use preferred base objects as base

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

When creating a pack using objects that reside in existing packs, we try
to avoid recomputing futile delta between an object (trg) and a candidate
for its base object (src) if they are stored in the same packfile, and trg
is not recorded as a delta already. This heuristics makes sense because it
is likely that we tried to express trg as a delta based on src but it did
not produce a good delta when we created the existing pack.

As the pack heuristics prefer producing delta to remove data, and Linus's
law dictates that the size of a file grows over time, we tend to record
the newest version of the file as inflated, and older ones as delta
against it.

When creating a thin-pack to transfer recent history, it is likely that we
will try to send an object that is recorded in full, as it is newer.  But
the heuristics to avoid recomputing futile delta effectively forbids us
from attempting to express such an object as a delta based on another
object. Sending an object in full is often more expensive than sending a
suboptimal delta based on other objects, and it is even more so if we
could use an object we know the receiving end already has (i.e. preferred
base object) as the delta base.

Tweak the recomputation avoidance logic, so that we do not punt on
computing delta against a preferred base object.

The effect of this change can be seen on two simulated upload-pack
workloads. The first is based on 44 reflog entries from my git.git
origin/master reflog, and represents the packs that kernel.org sent me git
updates for the past month or two. The second workload represents much
larger fetches, going from git's v1.0.0 tag to v1.1.0, then v1.1.0 to
v1.2.0, and so on.

The table below shows the average generated pack size and the average CPU
time consumed for each dataset, both before and after the patch:

                  dataset
            | reflog | tags
---------------------------------
     before | 53358  | 2750977
size  after | 32398  | 2668479
     change |   -39% |      -3%
---------------------------------
     before |  0.18  | 1.12
CPU   after |  0.18  | 1.15
     change |    +0% |      +3%

This patch makes a much bigger difference for packs with a shorter slice
of history (since its effect is seen at the boundaries of the pack) though
it has some benefit even for larger packs.
Signed-off-by: NJeff King <peff@peff.net>
Acked-by: NNicolas Pitre <nico@fluxnic.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The word-diff logic accumulates + and - lines until another line type
appears (normally [ @\]), at which point it generates the word diff.
This is usually correct, but it breaks when the preimage does not have
a newline at EOF:

  $ printf "%s" "a a a" >a
  $ printf "%s\n" "a ab a" >b
  $ git diff --no-index --word-diff a b
  diff --git 1/a 2/b
  index 9f68e94..6a7c02f 100644
  --- 1/a
  +++ 2/b
  @@ -1 +1 @@
  [-a a a-]
   No newline at end of file
  {+a ab a+}

Because of the order of the lines in a unified diff

  @@ -1 +1 @@
  -a a a
  \ No newline at end of file
  +a ab a

the '\' line flushed the buffers, and the - and + lines were never
matched with each other.

A proper fix would defer such markers until the end of the hunk.
However, word-diff is inherently whitespace-ignoring, so as a cheap
fix simply ignore the marker (and hide it from the output).

We use a prefix match for '\ ' to parallel the logic in
apply.c:parse_fragment().  We currently do not localize this string
(just accept other variants of it in git-apply), but this should be
future-proof.
Noticed-by: NIvan Shirokoff <shirokoff@yandex-team.ru>
Signed-off-by: NThomas Rast <trast@student.ethz.ch>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The tightening done in (ee27ca4a: archive: don't let remote clients
get unreachable commits, 2011-11-17) went too far and disallowed
HEAD:Documentation as it would try to find "HEAD:Documentation" as a
ref.

Only DWIM the "HEAD" part to see if it exists as a ref. Once we're
sure that we've been given a valid ref, we follow the normal code
path. This still disallows attempts to access commits which are not
branch tips.
Signed-off-by: NCarlos Martín Nieto <cmn@elego.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* maint:
  attr: fix leak in free_attr_elem
  t2203: fix wrong commit command

* maint-1.7.7:
  attr: fix leak in free_attr_elem
  t2203: fix wrong commit command