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Author SHA1 Message Date
John Keeping
1f197a1de4 difftool: fix dir-diff when file does not exist in working tree
Commit 02c5631 (difftool --dir-diff: symlink all files matching the
working tree, 2013-03-14) does not handle the case where a file that is
being compared does not exist in the working tree.  Fix this by checking
for existence explicitly before running git-hash-object.

Reported-by: Kevin Bracey <kevin@bracey.fi>
Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-17 11:46:53 -07:00
Felipe Contreras
31eb360b43 remote-bzr: fixes for older versions of bzr
Down to v2.0, by using older but still valid interfaces.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-17 11:43:36 -07:00
Sandor Bodo-Merle
a70ae5873d remote-bzr: fix old organization destroy
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-17 10:59:08 -07:00
Richard Hansen
66fa1b2c35 Documentation/merge-options.txt: restore -e option
It looks like commit f8246281af
unintentionally removed the documentation for the `-e` option.

Signed-off-by: Richard Hansen <rhansen@bbn.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-16 16:40:00 -07:00
Peter Krefting
9aa66a040f gitk: Update Swedish translation (304t)
Signed-off-by: Peter Krefting <peter@softwolves.pp.se>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2013-05-17 09:25:25 +10:00
Felipe Contreras
629b60a77d Revert "remote-hg: update bookmarks when pulling"
This reverts commit 24317ef32a.

Different versions of Mercurial have different arguments for
bookmarks.updatefromremote(), while it should be possible to call the
right function with the right arguments depending on the version, it's
safer to restore the old behavior for now.

Reported by Rodney Lorrimar.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-16 15:54:18 -07:00
Junio C Hamano
84cf246670 strbuf_branchname(): do not double-expand @{-1}~22
If you were on 'frotz' branch before you checked out your current
branch, "git merge @{-1}~22" means the same as "git merge frotz~22".

The strbuf_branchname() function, when interpret_branch_name() gives
up resolving "@{-1}~22" fully, returns "frotz" and tells the caller
that it only resolved "@{-1}" part of the input, mistakes this as a
total failure, and appends the whole thing to the result, yielding
"frotz@{-1}~22", which does not make any sense.

Inspect the return value from interpret_branch_name() a bit more
carefully.  When it errored out without consuming anything, we will
get -1 and we should return the whole thing.  Otherwise, we should
append the remainder (i.e. "~22" in the earlier example) to the
partially resolved name (i.e. "frotz").

The test suite adds enough number of checkout to make @{-12} in the
last test in t0100 that tried to check "we haven't flipped branches
that many times" error case succeed; raise the number to a hundred.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-16 12:53:59 -07:00
Dale R. Worley
3244eb9b5a git-submodule.txt: Clarify 'init' and 'add' subcommands.
Describe how 'add' sets the submodule's logical name, which is used in
the configuration entry names.

Clarify that 'init' only sets up the configuration entries for
submodules that have already been added elsewhere.  Describe that
<path> arguments limit the submodules that are configured.

Signed-off-by: Dale Worley <worley@ariadne.com>
Acked-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-16 12:01:31 -07:00
Kevin Bracey
a765499a08 revision.c: treat A...B merge bases as if manually specified
The documentation assures users that "A...B" is defined as "A B --not
$(git merge-base --all A B)". This wasn't in fact quite true, because
the calculated merge bases were not sent to add_rev_cmdline().

The main effect of this was that although

  git rev-list --ancestry-path A B --not $(git merge-base --all A B)

worked, the simpler form

  git rev-list --ancestry-path A...B

failed with a "no bottom commits" error.

Other potential users of bottom commits could also be affected by this
problem, if they examine revs->cmdline_info; I came across the issue in
my proposed history traversal refinements series.

So ensure that the calculated merge bases are sent to add_rev_cmdline(),
flagged with new 'whence' enum value REV_CMD_MERGE_BASE.

Signed-off-by: Kevin Bracey <kevin@bracey.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-16 11:45:34 -07:00
Felipe Contreras
4f4e7e9b62 remote-bzr: fix cloning of non-listable repos
Commit 95b0c60 (remote-bzr: add support for bzr repos) introduced a
regression by assuming all bzr remote repos are listable, but they are
not.

If they are not listable they are basically useless, so let's assume
there is no bzr repo.

Reported-by: Thorsten Kranzkowski <dl8bcu@dl8bcu.de>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-16 09:29:26 -07:00
Junio C Hamano
0c2b1cf812 Merge branch 'fc/remote-hg' (early part)
* 'fc/remote-hg' (early part):
  remote-hg: update bookmarks when pulling
  remote-hg: don't push fake 'master' bookmark
  remote-hg: disable forced push by default
  remote-hg: fix new branch creation
  remote-hg: add new get_config_bool() helper
  remote-hg: enable track-branches in hg-git mode
  remote-hg: get rid of unused exception checks
  remote-hg: trivial cleanups
2013-05-15 14:58:56 -07:00
Felipe Contreras
24317ef32a remote-hg: update bookmarks when pulling
Otherwise, the user would never ever see new bookmarks, only the
ones that (s)he initially cloned.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:41:13 -07:00
Felipe Contreras
9ed920a680 remote-hg: don't push fake 'master' bookmark
We skip it locally, but not for the remote, so let's do so.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:40:59 -07:00
Felipe Contreras
06f4213355 remote-hg: disable forced push by default
In certain situations we might end up pushing garbage revisions
(e.g. in a rebase), and the patches to deal with that haven't been
merged yet.  So let's disable forced pushes by default.

We are essentially reverting back to the old v1.8.2 behavior, to
minimize the possibility of regressions, but in a way the user can
configure.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:40:16 -07:00
Felipe Contreras
637333673a remote-hg: fix new branch creation
When a user creates a new branch with git:

 % git checkout -b branches/devel

and then pushes this branch

 % git push origin branches/devel

which is the way to push new mercurial branches, we do want to
create a branch, but the command would fail without newbranch=True.

This only matters when force_push=False, but setting newbranch=True
unconditionally does not hurt.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:35:51 -07:00
Felipe Contreras
760ee1c70a remote-hg: add new get_config_bool() helper
No functional changes.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:33:39 -07:00
Felipe Contreras
679e87c02b remote-hg: enable track-branches in hg-git mode
The user can turn this off.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:33:15 -07:00
Felipe Contreras
557399e9bd remote-hg: get rid of unused exception checks
Remove try/except check because we are no longer calling
check_output(), which may throw an exception.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:31:54 -07:00
Felipe Contreras
eb7976e7dd remote-hg: trivial cleanups
Drop unused "global", and remove redundant comparison of two files.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:30:36 -07:00
Matthijs Kooijman
aac385717a combine-diff.c: Fix output when changes are exactly 3 lines apart
When a deletion is followed by exactly 3 (or whatever the number of
context lines) unchanged lines, followed by another change, the combined
diff output would hide the first deletion, resulting in a malformed
diff.

This happened because the 3 lines before each change are painted
interesting, but also marked as no_pre_delete to prevent showing deletes
that were previously marked as uninteresting. This behaviour was
introduced in c86fbe53 (diff -c/--cc: do not include uninteresting
deletion before leading context). However, as a side effect, this could
also mark deletes that were already interesting as no_pre_delete. This
would happen only if the delete was exactly 3 lines away from the next
change, since lines farther away would not be touched by the "paint
three lines before the change" code and lines closer would be painted
by the "merge two adjacent hunks" code instead, which does not set the
no_pre_delete flag.

This commit fixes this problem by only setting the no_pre_delete flag
for changes that were previously uninteresting.

Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-15 12:02:04 -07:00
Felipe Contreras
6a3ac18ba3 remote-bzr: update old organization
If a clone exists with the old organization (v1.8.2) it will prevent
the new shared bzr repository organization from working, so let's
remove this repository, which is not used any more.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-14 15:51:00 -07:00
Thomas Rast
5ce4367d64 coverage: build coverage-untested-functions by default
Change the 'coverage' target to build coverage-untested-functions by
default, so as to make it more discoverable.

Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-13 15:25:25 -07:00
Thomas Rast
c14cc77c11 coverage: set DEFAULT_TEST_TARGET to avoid using prove
If the user sets DEFAULT_TEST_TARGET=prove in his config.mak, that
carries over into the coverage tests.  Which is really bad if he also
sets GIT_PROVE_OPTS=-j<..> as that completely breaks the coverage
runs.

Instead of attempting to mess with the GIT_PROVE_OPTS, just force the
test target to 'test' so that we run under make, like we intended all
along.

Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-13 15:25:10 -07:00
Thomas Rast
dcbe7f1ab8 coverage: do not delete .gcno files before building
The coverage-compile target depends on coverage-clean, which is
supposed to remove the earlier build products that would get in the
way of the next coverage test run.

However, removing *.gcno is actively wrong.  These are the files that
contain the compile-time coverage related data.  They are only rebuilt
if the source is compiled.  So if one ran 'make coverage' two times in
a row, the second run would remove *.gcno, but then fail to recreate
them because neither source files nor build flags have changed.  (This
remained hidden for so long most likely because any other intervening
use of 'make' will change the build flags, causing a full rebuild.)

So we make an exception for *.gcno.  The *.gcda are the coverage
results, written when the gcov-instrumented program is run.  We still
remove those, so as to get a one-test-run view of the data; you could
probably argue the other way too.

Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-13 15:24:46 -07:00
Thomas Rast
0c38a95ec8 coverage: split build target into compile and test
Confusingly, the coverage-build target in fact builds with gcov
support _and runs tests_.

Split it into two targets that actually are named after what they do.

Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-13 15:23:47 -07:00
Junio C Hamano
ab84621754 Git 1.8.3-rc2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-13 11:09:42 -07:00
Kevin Bracey
f659031c1c t6019: demonstrate --ancestry-path A...B breakage
Signed-off-by: Kevin Bracey <kevin@bracey.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-13 09:00:41 -07:00
Junio C Hamano
f74455ab21 Merge git://ozlabs.org/~paulus/gitk
* git://ozlabs.org/~paulus/gitk:
  gitk: On OSX, bring the gitk window to front
  gitk: Add support for -G'regex' pickaxe variant
  gitk: Add menu item for reverting commits
  gitk: Simplify file filtering
  gitk: Display the date of a tag in a human-friendly way
  gitk: Improve behaviour of drop-down lists
  gitk: Move hard-coded colors to .gitk
2013-05-13 07:51:41 -07:00
Tair Sabirgaliev
76bf6ff93e gitk: On OSX, bring the gitk window to front
On OSX, Tcl/Tk application windows are created behind all
the applications down the stack of windows.  This is very
annoying, because once a gitk window appears, it's the
downmost window and switching to it is pain.

The patch is: if we are on OSX, use osascript to
bring the current Wish process window to front.

Signed-off-by: Tair Sabirgaliev <tair.sabirgaliev@gmail.com>
Thanks-to: Stefan Haller <lists@haller-berlin.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2013-05-13 21:29:43 +10:00
Martin Langhoff
c33cb9083e gitk: Add support for -G'regex' pickaxe variant
git log -G'regex' is a very useful alternative to the classic
pickaxe.  Minimal patch to make it usable from gitk.

[zj: reword message]
[paulus@samba.org: reword droplist item]
Signed-off-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2013-05-13 21:29:40 +10:00
Junio C Hamano
5e2c7cd2c1 t5551: do not use unportable sed '\+'
The set-up step to prepare a repository with 50000 tags used a
non-porable '\+' to match one-or-more.

The error was not caught because the next test that uses that
repository did not even bother to check if these expected tags were
actually cloned to the resulting repository.

Fix the sed construct to use BRE and update the "clone" test that
wanted to test cloning from such a repository with many refs to
check the resulting repository.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-12 15:51:47 -07:00
Torsten Bögershausen
8d97506e4b test-bzr: do not use unportable sed '\+'
Using sed -e '/[0-9]\+//' to find "one or more digits" is not
portable.

Use the Basic Regular Expression '/[0-9][0-9]*//' instead.

Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-11 12:51:19 -07:00
Junio C Hamano
9249175291 Merge git://git.bogomips.org/git-svn
* git://git.bogomips.org/git-svn:
  git-svn: added an --include-path flag
  Git::SVN::*: add missing "NAME" section to perldoc
  git-svn: avoid self-referencing mergeinfo
2013-05-11 11:09:00 -07:00
David Aguilar
29de20504e Makefile: fix default regex settings on Darwin
t0070-fundamental.sh fails on Mac OS X 10.8:

	$ uname -a
	Darwin lustrous 12.2.0 Darwin Kernel Version 12.2.0:
	Sat Aug 25 00:48:52 PDT 2012;
	root:xnu-2050.18.24~1/RELEASE_X86_64 x86_64

	$ ./t0070-fundamental.sh -v
	fatal: regex bug confirmed: re-build git with NO_REGEX=1

Fix it by using Git's regex library.

Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-11 10:41:26 -07:00
Nguyễn Thái Ngọc Duy
0781aa4766 clone: let the user know when check_everything_connected is run
check_everything_connected could take a long time, especially in the
clone case where the whole DAG is traversed. The user deserves to know
what's going on.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-11 10:28:54 -07:00
Knut Franke
8f3ff9339f gitk: Add menu item for reverting commits
Sometimes it's helpful (at least psychologically) to have this feature
easily accessible.  Code borrows heavily from cherrypick.

Signed-off-by: Knut Franke <Knut.Franke@gmx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2013-05-11 18:31:50 +10:00
Felipe Contreras
2c8cd905d1 gitk: Simplify file filtering
git diff is perfectly able to do this with '-- files', no need for
manual filtering.  This makes gettreediffs consistent with getblobdiffs.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2013-05-11 17:37:08 +10:00
Anand Kumria
685316c419 gitk: Display the date of a tag in a human-friendly way
By selecting a tag within gitk you can display information about it.
This information is output by using the command

 'git cat-file tag <tagid>'

This outputs the *raw* information from the tag, amongst which is the
time - in seconds since the epoch. As useful as that value is, I find it
a lot easier to read and process time which it is something like:

 "Mon Dec 31 14:26:11 2012 -0800"

This change will modify the display of tags in gitk like so:

  @@ -1,7 +1,7 @@
   object 5d417842ef
   type commit
   tag v1.8.1
  -tagger Junio C Hamano <gitster@pobox.com> 1356992771 -0800
  +tagger Junio C Hamano <gitster@pobox.com> Mon Dec 31 14:26:11 2012 -0800

   Git 1.8.1
   -----BEGIN PGP SIGNATURE-----

Signed-off-by: Anand Kumria <wildfire@progsoc.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2013-05-11 17:09:27 +10:00
Paul Mackerras
39c126914b gitk: Improve behaviour of drop-down lists
The drop-down lists used for things like the criteria for finding
commits (containing/touching paths/etc.) use a combobox if we are
using the ttk widgets.  By default the combobox exports its value
as the selection when it is changed, which is unnecessary, and sometimes
the combobox wouldn't release the selection, which is annoying.

To fix this, we make these comboboxes not export their selection,
and also clear their selection whenever they are changed.  This makes
them more like a simple selection of alternatives, improving the look
and feel of gitk.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2013-05-11 17:08:41 +10:00
Dale Worley
48bc1755b6 CodingGuidelines: Documentation/*.txt are the sources
People not familiar with AsciiDoc may not realize they are
supposed to update *.txt files and not *.html/*.1 files when
preparing patches to the project.

Signed-off-by: Dale Worley <worley@ariadne.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-10 12:13:08 -07:00
Junio C Hamano
b387c77b12 Sync with v1.8.2.3
* maint:
  Git 1.8.2.3
  t5004: avoid using tar for checking emptiness of archive
  t5004: ignore pax global header file
  mergetools/kdiff3: do not use --auto when diffing
  transport-helper: trivial style cleanup
2013-05-09 13:32:54 -07:00
Junio C Hamano
92758dd2a2 Git 1.8.2.3
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-09 13:31:17 -07:00
Junio C Hamano
faf8fde514 Merge branch 'mv/sequencer-pick-error-diag'
Fix "git cherry-pick $annotated_tag", which was mistakenly rejected.

* mv/sequencer-pick-error-diag:
  cherry-pick: picking a tag that resolves to a commit is OK
2013-05-09 13:30:19 -07:00
Junio C Hamano
7c0b0d8dea cherry-pick: picking a tag that resolves to a commit is OK
Earlier, 21246dbb9e (cherry-pick: make sure all input objects are
commits, 2013-04-11) tried to catch an unlikely "git cherry-pick $blob"
as an error, but broke a more important use case to cherry-pick a
tag that points at a commit.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-09 13:29:53 -07:00
Junio C Hamano
07e03d4665 Merge branch 'tr/copy-revisions-from-stdin' into maint
* tr/copy-revisions-from-stdin:
  read_revisions_from_stdin: make copies for handle_revision_arg
2013-05-09 12:42:17 -07:00
René Scharfe
ea2d20d4c2 t5004: avoid using tar for checking emptiness of archive
Test 2 of t5004 checks if a supposedly empty tar archive really
contains no files.  24676f02 (t5004: fix issue with empty archive test
and bsdtar) removed our commit hash to make it work with bsdtar, but
the test still fails on NetBSD and OpenBSD, which use their own tar
that considers a tar file containing only NULs as broken.

Here's what the different archivers do when asked to create a tar
file without entries:

	$ uname -v
	NetBSD 6.0.1 (GENERIC)
	$ gtar --version | head -1
	tar (GNU tar) 1.26
	$ bsdtar --version
	bsdtar 2.8.4 - libarchive 2.8.4

	$ : >zero.tar
	$ perl -e 'print "\0" x 10240' >tenk.tar
	$ sha1 zero.tar tenk.tar
	SHA1 (zero.tar) = da39a3ee5e6b4b0d3255bfef95601890afd80709
	SHA1 (tenk.tar) = 34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c

	$ : | tar cf - -T - | sha1
	da39a3ee5e6b4b0d3255bfef95601890afd80709
	$ : | gtar cf - -T - | sha1
	34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c
	$ : | bsdtar cf - -T - | sha1
	34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c

So NetBSD's native tar creates an empty file, while GNU tar and bsdtar
both give us 10KB of NULs -- just like git archive with an empty tree.
Now let's see how the archivers handle these two kinds of empty tar
files:

	$ tar tf zero.tar; echo $?
	tar: Unexpected EOF on archive file
	1
	$ gtar tf zero.tar; echo $?
	gtar: This does not look like a tar archive
	gtar: Exiting with failure status due to previous errors
	2
	$ bsdtar tf zero.tar; echo $?
	0

	$ tar tf tenk.tar; echo $?
	tar: Cannot identify format. Searching...
	tar: End of archive volume 1 reached
	tar: Sorry, unable to determine archive format.
	1
	$ gtar tf tenk.tar; echo $?
	0
	$ bsdtar tf tenk.tar; echo $?
	0

NetBSD's tar complains about both, bsdtar happily accepts any of them
and GNU tar doesn't like zero-length archive files.  So the safest
course of action is to stay with our block-of-NULs format which is
compatible with GNU tar and bsdtar, as we can't make NetBSD's native
tar happy anyway.

We can simplify our test, however, by taking tar out of the picture.
Instead of extracting the archive and checking for the non-presence of
files, check if the file has a size of 10KB and contains only NULs.
This makes t5004 pass on NetBSD and OpenBSD.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-09 12:41:31 -07:00
René Scharfe
56ee96572a t5004: resurrect original empty tar archive test
Add a test to verify the emptiness of an archive by extracting its
contents.  Don't run this test if the version of tar doesn't support
archives containing only a comment header, though.

The existing check 'tar archive of empty tree is empty' used to work
like that (minus the tar capability check) but was changed to depend
on the exact representation of empty tar files created by git archive
instead of on the behaviour of tar in order to avoid issues with
different tar versions.

The different approaches test different things: The existing one is
for empty trees, for which we know the exact expected output and thus
we can simply check it without extracting; the new one is for commits
with empty trees, whose archives include stamps and so the more
"natural" check by extraction is a better fit because it focuses on
the interesting aspect, namely the absence of any archive entries.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-09 12:22:31 -07:00
René Scharfe
71a19a3744 t5004: avoid using tar for checking emptiness of archive
Test 2 of t5004 checks if a supposedly empty tar archive really
contains no files.  24676f02 (t5004: fix issue with empty archive test
and bsdtar) removed our commit hash to make it work with bsdtar, but
the test still fails on NetBSD and OpenBSD, which use their own tar
that considers a tar file containing only NULs as broken.

Here's what the different archivers do when asked to create a tar
file without entries:

	$ uname -v
	NetBSD 6.0.1 (GENERIC)
	$ gtar --version | head -1
	tar (GNU tar) 1.26
	$ bsdtar --version
	bsdtar 2.8.4 - libarchive 2.8.4

	$ : >zero.tar
	$ perl -e 'print "\0" x 10240' >tenk.tar
	$ sha1 zero.tar tenk.tar
	SHA1 (zero.tar) = da39a3ee5e6b4b0d3255bfef95601890afd80709
	SHA1 (tenk.tar) = 34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c

	$ : | tar cf - -T - | sha1
	da39a3ee5e6b4b0d3255bfef95601890afd80709
	$ : | gtar cf - -T - | sha1
	34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c
	$ : | bsdtar cf - -T - | sha1
	34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c

So NetBSD's native tar creates an empty file, while GNU tar and bsdtar
both give us 10KB of NULs -- just like git archive with an empty tree.
Now let's see how the archivers handle these two kinds of empty tar
files:

	$ tar tf zero.tar; echo $?
	tar: Unexpected EOF on archive file
	1
	$ gtar tf zero.tar; echo $?
	gtar: This does not look like a tar archive
	gtar: Exiting with failure status due to previous errors
	2
	$ bsdtar tf zero.tar; echo $?
	0

	$ tar tf tenk.tar; echo $?
	tar: Cannot identify format. Searching...
	tar: End of archive volume 1 reached
	tar: Sorry, unable to determine archive format.
	$ gtar tf tenk.tar; echo $?
	0
	$ bsdtar tf tenk.tar; echo $?
	0

NetBSD's tar complains about both, bsdtar happily accepts any of them
and GNU tar doesn't like zero-length archive files.  So the safest
course of action is to stay with our block-of-NULs format which is
compatible with GNU tar and bsdtar, as we can't make NetBSD's native
tar happy anyway.

We can simplify our test, however, by taking tar out of the picture.
Instead of extracting the archive and checking for the non-presence of
files, check if the file has a size of 10KB and contains only NULs.
This makes t5004 pass on NetBSD and OpenBSD.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-09 12:20:40 -07:00
René Scharfe
abdb9b2e4f t5004: ignore pax global header file
Versions of tar that don't know pax headers -- like the ones in NetBSD 6
and OpenBSD 5.2 -- extract them as regular files.  Explicitly ignore the
file created for our global header when checking the list of extracted
files, as this is normal and harmless fall-back behaviour.  This fixes
test 3 of t5004 on these platforms.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-09 12:18:57 -07:00
David Aguilar
e2161bc385 mergetools/kdiff3: do not use --auto when diffing
The `kdiff3 --auto` help message is, "No GUI if all conflicts are auto-
solvable."  This flag was carried over from the original mergetool
commands.  diff_cmd() is for two-way comparisons only so remove the
superfluous flag.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-09 11:59:39 -07:00