* jh/clone-packed-refs:
  Teach "git clone" to pack refs
  Prepare testsuite for a "git clone" that packs refs
  Move pack_refs() and friends into libgit
  Incorporate fetched packs in future object traversal

* lw/perlish:
  Git.pm: add test suite
  t/test-lib.sh: add test_external and test_external_without_stderr

Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

To do so, check_pack_crc() moved from builtin-pack-objects.c to
pack-check.c where it is more logical to share.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This is called when verify_pack() has its verbose argument set, and
verbose in this context makes sense only for the actual 'git verify-pack'
command.  Therefore let's move show_pack_info() to builtin-verify-pack.c
instead and remove useless verbose argument from verify_pack().
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Using find_pack_entry_one() to get object offsets is rather suboptimal
when nth_packed_object_offset() can be used directly.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The shell version used to use "mkdir -p" to create the repo
path, but the C version just calls "mkdir". Let's replicate
the old behavior. We have to create the git and worktree
leading dirs separately; while most of the time, the
worktree dir contains the git dir (as .git), the user can
override this using GIT_WORK_TREE.

We can reuse safe_create_leading_directories, but we need to
make a copy of our const buffer to do so. Since
merge-recursive uses the same pattern, we can factor this
out into a global function. This has two other cleanup
advantages for merge-recursive:

  1. mkdir_p wasn't a very good name. "mkdir -p foo/bar" actually
     creates bar, but this function just creates the leading
     directories.

  2. mkdir_p took a mode argument, but it was completely
     ignored.
Acked-by: NDaniel Barkalow <barkalow@iabervon.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

We used to mark hooks we ship as samples by making them unexecutable, but
some filesystems cannot tell what is executable and what is not.

This makes it much more explicit.  The hooks are suffixed with .sample
(but now are made executable), so enabling it is still one step operation
(instead of "chmod +x $hook", you would do "mv $hook.sample $hook") but
now they won't get accidentally enabled on systems without executable bit.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This hook is what I have been using to manage topic branches in git.git,
but have not been updated to the Real Thing for a while.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

New pack structures are currently allocated in 2 different places
and all members have to be initialized explicitly.  This is prone
to errors leading to segmentation faults as found by Teemu Likonen.

Let's have a common place where this structure is allocated, and have
all members explicitly initialized to zero.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

We should be able to fall back to loose objects or alternative packs when
a pack becomes corrupted.  This is especially true when an object exists
in one pack only as a delta but its base object is corrupted.  Currently
there is no way to retrieve the former object even if the later is
available in another pack or loose.

This patch allows for a delta to be resolved (with a performance cost)
using a base object from a source other than the pack where that delta
is located.  Same thing for non-delta objects: rather than failing
outright, a search is made in other packs or used loose when the
currently active pack has it but corrupted.

Of course git will become extremely noisy with error messages when that
happens.  However, if the operation succeeds nevertheless, a simple
'git repack -a -f -d' will "fix" the corrupted repository given that all
corrupted objects have a good duplicate somewhere in the object store,
possibly manually copied from another source.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This makes life much easier for next patch, as well as being more efficient
when the revindex is actually not used.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* maint:
  git-svn: make rebuild respect rewriteRoot option
  Workaround for AIX mkstemp()

Suppose someone fetches git-svn-ified commits from another repo and then
attempts to use 'git-svn init --rewrite-root=foo bar'. Using git svn rebase
after that will fail badly:

 * For each commit tried by working_head_info, rebuild is called indirectly.
 * rebuild will iterate over all commits and skip all of them because the
   URL does not match. Because of that no rev_map file is generated at all.
 * Thus, rebuild will run once for every commit. This takes ages.
 * In the end there still isn't any rev_map file and thus working_head_info
   fails.

Addressing this behaviour fixes an apparently not too uncommon problem with
providing git-svn mirrors of Subversion repositories. Some repositories are
accessed using different URLs depending on whether the user has push
privileges or not. In the latter case, an anonymous URL is often used that
differs from the push URL. Providing a mirror that is usable in both cases
becomes a lot more possible with this change.
Signed-off-by: NJan Krüger <jk@jk.gs>
Acked-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The AIX mkstemp will modify it's template parameter to an empty string if
the call fails. This caused a subsequent mkdir to fail.
Signed-off-by: NPatrick Higgins <patrick.higgins@cexp.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NMichele Ballabio <barra_cuda@katamail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

So I was looking at the disgusting size of the git binary, and even with
the debugging removed, and using -Os instead of -O2, the size of the text
section was pretty high. In this day and age I guess almost a megabyte of
text isn't really all that surprising, but it still doesn't exactly make
me think "lean and mean".

With -Os, a surprising amount of text space is wasted on inline functions
that end up just being replicated multiple times, and where performance
really isn't a valid reason to inline them. In particular, the trivial
wrapper functions like "xmalloc()" are used _everywhere_, and making them
inline just duplicates the text (and the string we use to 'die()' on
failure) unnecessarily.

So this just moves them into a "wrapper.c" file, getting rid of a tiny bit
of unnecessary bloat. The following numbers are both with "CFLAGS=-Os":

Before:
	[torvalds@woody git]$ size git
	   text	   data	    bss	    dec	    hex	filename
	 700460	  15160	 292184	1007804	  f60bc	git

After:
	[torvalds@woody git]$ size git
	   text	   data	    bss	    dec	    hex	filename
	 670540	  15160	 292184	 977884	  eebdc	git

so it saves almost 30k of text-space (it actually saves more than that
with the default -O2, but I don't think that's necessarily a very relevant
number from a "try to shrink git" standpoint).

It might conceivably have a performance impact, but none of this should be
_that_ performance critical. The real cost is not generally in the wrapper
anyway, but in the code it wraps (ie the cost of "xread()" is all in the
read itself, not in the trivial wrapping of it).
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* maint:
  Extend parse-options test suite
  api-parse-options.txt: Introduce documentation for parse options API
  parse-options.c: fix documentation syntax of optional arguments
  api-builtin.txt: update and fix typo

This patch serves two purposes:
 1. test-parse-option.c should be a more complete
    example for the parse-options API, and
 2. there have been no tests for OPT_CALLBACK,
    OPT_DATE, OPT_BIT, OPT_SET_INT and OPT_SET_PTR
    before.
Signed-off-by: NStephan Beyer <s-beyer@gmx.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Add some documentation of basics, macros and callback
implementation of the parse-options API.
Signed-off-by: NStephan Beyer <s-beyer@gmx.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When an argument for an option is optional, short options don't need a
space between the option and the argument, and long options need a "=".
Otherwise, arguments are misinterpreted.
Signed-off-by: NMichele Ballabio <barra_cuda@katamail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Mention NEED_WORK_TREE flag and command-list.txt.
Fix "bulit-in" typo and AsciiDoc-formatting of a paragraph.
Signed-off-by: NStephan Beyer <s-beyer@gmx.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* rs/archive-ignore:
  Teach new attribute 'export-ignore' to git-archive

* lt/racy-empty:
  racy-git: an empty blob has a fixed object name

* sn/static:
  config.c: make git_env_bool() static
  environment.c: remove unused function

* jc/maint-combine-diff-pre-context:
  diff -c/--cc: do not include uninteresting deletion before leading context

* lt/maint-gitdir-relative:
  Make git_dir a path relative to work_tree in setup_work_tree()

* jk/test:
  enable whitespace checking of test scripts
  avoid trailing whitespace in zero-change diffstat lines
  avoid whitespace on empty line in automatic usage message
  mask necessary whitespace policy violations in test scripts
  fix whitespace violations in test scripts

* pb/fast-export:
  builtin-fast-export: Add importing and exporting of revision marks

* mo/status-untracked:
  Add configuration option for default untracked files mode
  Add argument 'no' commit/status option -u|--untracked-files
  Add an optional <mode> argument to commit/status -u|--untracked-files option

Conflicts:

	Documentation/git-commit.txt

* kh/update-ref:
  Make old sha1 optional with git update-ref -d
  Clean up builtin-update-ref's option parsing

* jn/web:
  gitweb: Separate generating 'sort by' table header
  gitweb: Separate filling list of projects info

* rg/gitweb:
  gitweb: remove git_blame and rename git_blame2 to git_blame

This option behaves more like:

  git push $url +refs/*:refs/*

than it does like:

  git push $url +refs/heads/*:refs/heads/* +refs/tags/*:refs/tags/*

so we should document it to be more clear about that.
Suggested-by: NMarek Zawirski <marek.zawirski@gmail.com>
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Add description of GIT_SKIP_TESTS variable, taken almost verbatim
(adjusting for conventions in t/README) from the commit message in

   04ece593 (GIT_SKIP_TESTS: allow users to omit tests that are known to break)
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NJakub Narebski <jnareb@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When the COMMIT_EDITMSG cannot be opened, give more information to the user
by giving the 'errno' information.
Signed-off-by: NCristian Peraferrer <corellian.c@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This makes it possible to install html documents from the top level
directory. Previously such target was only in Documentation/Makefile.
Signed-off-by: NTeemu Likonen <tlikonen@iki.fi>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Options added: --walk-reflogs --stat --numstat --shortstat
--decorate --diff-filter= --color-words
Signed-off-by: NTeemu Likonen <tlikonen@iki.fi>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The script appp.sh can be used with the External Editor extension for
Mozilla Thunderbird in order to be able to send inline patches in an
easy way.
Signed-off-by: NLukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>