Commit Graph

32047 Commits

Author SHA1 Message Date
Junio C Hamano
a7b5e9141e Merge branch 'cr/doc-checkout-branch' into maint
* cr/doc-checkout-branch:
  Documentation/git-checkout.txt: document 70c9ac2 behavior
  Documentation/git-checkout.txt: clarify usage
2012-12-22 20:38:02 -08:00
Junio C Hamano
2b1965863b Merge branch 'ta/api-index-doc' into maint
* ta/api-index-doc:
  Remove misleading date from api-index-skel.txt
2012-12-22 20:37:42 -08:00
Junio C Hamano
ffcd76bda9 Merge branch 'as/doc-for-devs' into maint
* as/doc-for-devs:
  Documentation: move support for old compilers to CodingGuidelines
  SubmittingPatches: add convention of prefixing commit messages
2012-12-22 20:37:33 -08:00
Junio C Hamano
e970ec356b Merge branch 'sl/readme-gplv2' into maint
* sl/readme-gplv2:
  README: it does not matter who the current maintainer is
  README: Git is released under the GPLv2, not just "the GPL"
2012-12-22 20:37:27 -08:00
Junio C Hamano
21b340181b Merge branch 'jc/fetch-tags-doc' into maint
* jc/fetch-tags-doc:
  fetch --tags: clarify documentation
2012-12-22 20:37:22 -08:00
Junio C Hamano
df54d59566 Merge branch 'nd/index-format-doc' into maint
* nd/index-format-doc:
  index-format.txt: clarify what is "invalid"
2012-12-22 20:37:09 -08:00
Junio C Hamano
ccc3ae799c Merge branch 'jk/mailmap-cleanup' into maint
* jk/mailmap-cleanup:
  contrib: update stats/mailmap script
  .mailmap: normalize emails for Linus Torvalds
  .mailmap: normalize emails for Jeff King
  .mailmap: fix broken entry for Martin Langhoff
  .mailmap: match up some obvious names/emails
2012-12-22 20:36:42 -08:00
Junio C Hamano
66afe50b43 Merge branch 'ta/doc-cleanup' into maint
* ta/doc-cleanup:
  Documentation: build html for all files in technical and howto
  Documentation/howto: convert plain text files to asciidoc
  Documentation/technical: convert plain text files to asciidoc
  Change headline of technical/send-pack-pipeline.txt to not confuse its content with content from git-send-pack.txt
  Shorten two over-long lines in git-bisect-lk2009.txt by abbreviating some sha1
  Split over-long synopsis in git-fetch-pack.txt into several lines
2012-12-22 20:35:34 -08:00
Thomas Ackermann
854dfda8be Sort howto documents in howto-index.txt
Howto documents in howto-index.txt were listed in a rather
random order. So better sort them.

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-22 20:26:56 -08:00
Michael Schubert
248a8849fa git-subtree: fix typo in manpage
Signed-off-by: Michael Schubert <mschub@elegosoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-22 20:21:48 -08:00
Michael Schubert
f228dade3d git-subtree: ignore git-subtree executable
Signed-off-by: Michael Schubert <mschub@elegosoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-22 20:21:26 -08:00
Martin von Zweigbergk
5d77298d08 tests: move test_cmp_rev to test-lib-functions
A function for checking that two given parameters refer to the same
revision was defined in several places, so move the definition to
test-lib-functions.sh instead.

Signed-off-by: Martin von Zweigbergk <martinvonz@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-22 19:06:35 -08:00
Junio C Hamano
b3cf6f3b8d Git 1.8.1-rc3
The changes since -rc2 are mostly documentation updates.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-22 11:48:47 -08:00
Junio C Hamano
5fe10fe80a format-patch: add --reroll-count=$N option
The --reroll-count=$N option, when given a positive integer:

 - Adds " v$N" to the subject prefix specified.  As the default
   subject prefix string is "PATCH", --reroll-count=2 makes it
   "PATCH v2".

 - Prefixes "v$N-" to the names used for output files.  The cover
   letter, whose name is usually 0000-cover-letter.patch, becomes
   v2-0000-cover-letter.patch when given --reroll-count=2.

This allows users to use the same --output-directory for multiple
iterations of the same series, without letting the output for a
newer round overwrite output files from the earlier rounds.  The
user can incorporate materials from earlier rounds to update the
newly minted iteration, and use "send-email v2-*.patch" to send out
the patches belonging to the second iteration easily.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-22 00:21:23 -08:00
Junio C Hamano
d28b5d47ab get_patch_filename(): split into two functions
The function switched between two operating modes depending on the
NULL-ness of its two parameters, as a hacky way to share small part
of implementation, sacrificing cleanliness of the API.

Implement "fmt_output_subject()" function that takes a subject
string and gives the name for the output file, and on top of it,
implement "fmt_output_commit()" function that takes a commit and
gives the name for the output file.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 23:55:40 -08:00
Junio C Hamano
38ec23ac89 get_patch_filename(): drop "just-numbers" hack
The function chooses from three operating modes (format using the
subject, the commit, or just number) based on NULL-ness of two of
its parameters, which is an ugly hack for sharing only a bit of
code.

Separate out the "just numbers" part out to the callers.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 23:55:40 -08:00
Junio C Hamano
021f2f4c1a get_patch_filename(): simplify function signature
Most functions that emit to a strbuf take the strbuf as their first
parameter; make this function follow suit.

The serial number of the patch being emitted (nr) and suffix used
for patch filename (suffix) are both recorded in rev_info; drop
these separate parameters and pass the rev_info directly.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 23:55:10 -08:00
Junio C Hamano
68cb7b6f85 builtin/log.c: stop using global patch_suffix
The suffix for the output filename is found in rev->patch_suffix; do
not keep using the global that is only used to parse the command
line and configuration.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 23:12:25 -08:00
Junio C Hamano
ce37596c13 builtin/log.c: drop redundant "numbered_files" parameter from make_cover_letter()
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 21:27:38 -08:00
Junio C Hamano
25a751f198 builtin/log.c: drop unused "numbered" parameter from make_cover_letter()
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 21:16:51 -08:00
Junio C Hamano
b10c4add03 Merge branch 'ta/new-command-howto'
* ta/new-command-howto:
  Move ./technical/api-command.txt to ./howto/new-command.txt
2012-12-21 15:19:25 -08:00
Junio C Hamano
814a1924b4 Merge branch 'jc/doc-diff-blobs'
"git diff <blob> <blob>" was not documented and was only hinted as
an extension to "git diff <commit> <commit> -- <pathspec>", but
comparison between two blobs are more special than that.  It does
not take any pathspec to begin with.

* jc/doc-diff-blobs:
  Documentation: Describe "git diff <blob> <blob>" separately
2012-12-21 15:19:13 -08:00
Junio C Hamano
51bf6bea51 Merge branch 'cr/doc-checkout-branch'
Document the magic "git checkout <no-such-branch>" hack to create
local branch out of a remote tracking branch that hasn't been
documented so far.

* cr/doc-checkout-branch:
  Documentation/git-checkout.txt: document 70c9ac2 behavior
  Documentation/git-checkout.txt: clarify usage
2012-12-21 15:19:08 -08:00
Junio C Hamano
6600dcbd30 Merge branch 'ta/api-index-doc'
* ta/api-index-doc:
  Remove misleading date from api-index-skel.txt
2012-12-21 15:19:04 -08:00
Junio C Hamano
53096bf0af Merge branch 'jk/avoid-mailto-invalid-in-doc'
Avoids invalid sample e-mail addresses from becoming mailto links
in the formatted output.

* jk/avoid-mailto-invalid-in-doc:
  Documentation: don't link to example mail addresses
2012-12-21 15:18:57 -08:00
Junio C Hamano
c2c6a70a54 Merge branch 'as/doc-for-devs'
It might be a better idea to move the text the bottom one adds to
the extended description from the quick checklist part.

* as/doc-for-devs:
  Documentation: move support for old compilers to CodingGuidelines
  SubmittingPatches: add convention of prefixing commit messages
2012-12-21 15:18:47 -08:00
Junio C Hamano
19b4520ba9 Merge branch 'sl/readme-gplv2'
Clarify that the project as a whole is GPLv2 only, with some parts
borrowed under different licenses that are compatible with GPLv2.

* sl/readme-gplv2:
  README: it does not matter who the current maintainer is
  README: Git is released under the GPLv2, not just "the GPL"
2012-12-21 15:18:41 -08:00
Junio C Hamano
73cf1b540e Merge branch 'jc/fetch-tags-doc'
"git fetch --tags" was explained as if it were "git fetch
--no-no-tags", which is not the case, causing confusion.

* jc/fetch-tags-doc:
  fetch --tags: clarify documentation
2012-12-21 15:18:35 -08:00
Junio C Hamano
d34ccd6df7 Merge branch 'nd/index-format-doc'
* nd/index-format-doc:
  index-format.txt: clarify what is "invalid"
2012-12-21 15:18:32 -08:00
Junio C Hamano
80c78e11a0 Merge branch 'sl/git-svn-docs'
* sl/git-svn-docs:
  git-svn: Note about tags.
  git-svn: Expand documentation for --follow-parent
  git-svn: Recommend use of structure options.
  git-svn: Document branches with at-sign(@).
2012-12-21 15:18:27 -08:00
Junio C Hamano
675a0fe297 Merge branch 'jk/mailmap-cleanup'
Update various entries in our .mailmap file.

* jk/mailmap-cleanup:
  contrib: update stats/mailmap script
  .mailmap: normalize emails for Linus Torvalds
  .mailmap: normalize emails for Jeff King
  .mailmap: fix broken entry for Martin Langhoff
  .mailmap: match up some obvious names/emails
2012-12-21 15:18:20 -08:00
Thomas Ackermann
81670e9bfc Move ./technical/api-command.txt to ./howto/new-command.txt
The contents of this document does not describe any particular API, but
is more about the way to add a new command, which belongs to the "How To"
section of the documentation suite.

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 10:35:53 -08:00
Rene Bredlau
75e9a405d4 http.c: Avoid username prompt for certifcate credentials
If sslCertPasswordProtected is set to true do not ask for username to decrypt rsa key. This question is pointless, the key is only protected by a password. Internaly the username is simply set to "".

Signed-off-by: Rene Bredlau <git@unrelated.de>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 10:19:40 -08:00
Jeff King
b3f1280ec7 refs: do not use cached refs in repack_without_ref
When we delete a ref that is packed, we rewrite the whole
packed-refs file and simply omit the ref that no longer
exists. However, we base the rewrite on whatever happens to
be in our refs cache, not what is necessarily on disk. That
opens us up to a race condition if another process is
simultaneously packing the refs, as we will overwrite their
newly-made pack-refs file with our potentially stale data,
losing commits.

You can demonstrate the race like this:

  # setup some repositories
  git init --bare parent &&
  (cd parent && git config core.logallrefupdates true) &&
  git clone parent child &&
  (cd child && git commit --allow-empty -m base)

  # in one terminal, repack the refs repeatedly
  cd parent &&
  while true; do
	git pack-refs --all
  done

  # in another terminal, simultaneously push updates to
  # master, and create and delete an unrelated ref
  cd child &&
  while true; do
	git push origin HEAD:newbranch &&
	git commit --allow-empty -m foo
	us=`git rev-parse master` &&
	git push origin master &&
	git push origin :newbranch &&
	them=`git --git-dir=../parent rev-parse master` &&
	if test "$them" != "$us"; then
		echo >&2 "$them" != "$us"
		exit 1
	fi
  done

In many cases the two processes will conflict over locking
the packed-refs file, and the deletion of newbranch will
simply fail.  But eventually you will hit the race, which
happens like this:

  1. We push a new commit to master. It is already packed
     (from the looping pack-refs call). We write the new
     value (let us call it B) to $GIT_DIR/refs/heads/master,
     but the old value (call it A) remains in the
     packed-refs file.

  2. We push the deletion of newbranch, spawning a
     receive-pack process. Receive-pack advertises all refs
     to the client, causing it to iterate over each ref; it
     caches the packed refs in memory, which points at the
     stale value A.

  3. Meanwhile, a separate pack-refs process is running. It
     runs to completion, updating the packed-refs file to
     point master at B, and deleting $GIT_DIR/refs/heads/master
     which also pointed at B.

  4. Back in the receive-pack process, we get the
     instruction to delete :newbranch. We take a lock on
     packed-refs (which works, as the other pack-refs
     process has already finished). We then rewrite the
     contents using the cached refs, which contain the stale
     value A.

The resulting packed-refs file points master once again at
A. The loose ref which would override it to point at B was
deleted (rightfully) in step 3. As a result, master now
points at A. The only trace that B ever existed in the
parent is in the reflog: the final entry will show master
moving from A to B, even though the ref still points at A
(so you can detect this race after the fact, because the
next reflog entry will move from A to C).

We can fix this by invalidating the packed-refs cache after
we have taken the lock. This means that we will re-read the
packed-refs file, and since we have the lock, we will be
sure that what we read will be atomically up-to-date when we
write (it may be out of date with respect to loose refs, but
that is OK, as loose refs take precedence).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21 08:10:22 -08:00
Adam Spiers
b73d9a2363 tests: paint unexpectedly fixed known breakages in bold red
Change color of unexpectedly fixed known breakages to bold red.  An
unexpectedly passing test indicates that the test code is somehow
broken or out of sync with the code it is testing.  Either way this is
an error which is potentially as bad as a failing test, and as such is
no longer portrayed as a pass in the output.

Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20 14:22:12 -08:00
Adam Spiers
5ebf89e886 tests: test the test framework more thoroughly
Add 5 new full test suite runs each with a different number of
passing/failing/broken/fixed tests, in order to ensure that the
correct exit code and output are generated in each case.  As before,
these are run in a subdirectory to avoid disrupting the metrics for
the parent tests.

Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20 14:22:12 -08:00
Adam Spiers
565b6fa87b tests: refactor mechanics of testing in a sub test-lib
This will allow us to test the test framework more thoroughly
without disrupting the top-level test metrics.

Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20 14:22:12 -08:00
Adam Spiers
0a6d4751da tests: change info messages from yellow/brown to cyan
Now that we've adopted a "traffic lights" coloring scheme, yellow is
used for warning messages, so we need to re-color info messages to
something less alarmist.  Blue is a universal color for informational
messages; however we are using that for skipped tests in order to
align with the color schemes of other test suites.  Therefore we use
cyan which is also blue-ish, but visually distinct from blue.

This was suggested on the list a while ago and no-one raised any
objections:

    http://thread.gmane.org/gmane.comp.version-control.git/205675/focus=205966

An earlier iteration of this patch used bold cyan, but the point of
this change is to make them less alarming; let's drop the boldness.

Also paint the message to report skipping the whole thing via
GIT_SKIP_TESTS mechanism in the same color as the "info" color
that is used on the final summary line for the entire script.

Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20 14:22:12 -08:00
Adam Spiers
b8fc855a78 tests: paint skipped tests in blue
Skipped tests indicate incomplete test coverage.  Whilst this is not a
test failure or other error, it's still not a complete success.

Other testsuite related software like automake, autotest and prove
seem to use blue for skipped tests, so let's follow suit.

Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20 14:22:12 -08:00
Adam Spiers
e8e5195573 tests: paint known breakages in yellow
Yellow seems a more appropriate color than bold green when
considering the universal traffic lights coloring scheme, where
green conveys the impression that everything's OK, and amber that
something's not quite right.

Likewise, change the color of the summarized total number of known
breakages from bold red to the same yellow to be less alarmist and
more consistent with the above.

An earlier version of this patch used bold yellow but because these
are all long-known failures, reminding them to developers in bold
over and over does not help encouraging them to take a look at them
very much.  This iteration paints them in plain yellow instead to
make them less distracting.

Signed-off-by: Adam Spiers <git@adamspiers.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20 14:22:03 -08:00
Martin von Zweigbergk
686b2de0ce oneway_merge(): only lstat() when told to update worktree
Although the subject line of 613f027 (read-tree -u one-way merge fix
to check out locally modified paths., 2006-05-15) mentions "read-tree
-u", it did not seem to check whether -u was in effect. Not checking
whether -u is in effect makes e.g. "read-tree --reset" lstat() the
worktree, even though the worktree stat should not matter for that
operation.

This speeds up e.g. "git reset" a little on the linux-2.6 repo (best
of five, warm cache):

        Before      After
real    0m0.288s    0m0.233s
user    0m0.190s    0m0.150s
sys     0m0.090s    0m0.080s

Signed-off-by: Martin von Zweigbergk <martinvonz@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-20 13:07:22 -08:00
Matt Kraai
40036bedb9 Port to QNX
Signed-off-by: Matt Kraai <matt.kraai@amo.abbott.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 19:00:00 -08:00
Matt Kraai
9dacffc040 Make lock local to fetch_pack
lock is only used by fetch_pack, so move it into that function.

Signed-off-by: Matt Kraai <matt.kraai@amo.abbott.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 19:00:00 -08:00
Junio C Hamano
b2d05e0653 git-compat-util.h: do not #include <sys/param.h> by default
Earlier we allowed platforms that lack <sys/param.h> not to include
the header file from git-compat-util.h; we have included this header
file since the early days back when we used MAXPATHLEN (which we no
longer use) and also depended on it slurping ULONG_MAX (which we get
by including stdint.h or inttypes.h these days).

It turns out that we can compile our modern codebase just file
without including it on many platforms (so far, Fedora, Debian,
Ubuntu, MinGW, Mac OS X, Cygwin, HP-Nonstop, QNX and z/OS are
reported to be OK).

Let's stop including it by default, and on platforms that need it to
be included, leave "make NEEDS_SYS_PARAM_H=YesPlease" as an escape
hatch and ask them to report to us, so that we can find out about
the real dependency and fix it in a more platform agnostic way.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 18:57:46 -08:00
Jeff King
823ab40fd4 add global --literal-pathspecs option
Git takes pathspec arguments in many places to limit the
scope of an operation. These pathspecs are treated not as
literal paths, but as glob patterns that can be fed to
fnmatch. When a user is giving a specific pattern, this is a
nice feature.

However, when programatically providing pathspecs, it can be
a nuisance. For example, to find the latest revision which
modified "$foo", one can use "git rev-list -- $foo". But if
"$foo" contains glob characters (e.g., "f*"), it will
erroneously match more entries than desired. The caller
needs to quote the characters in $foo, and even then, the
results may not be exactly the same as with a literal
pathspec. For instance, the depth checks in
match_pathspec_depth do not kick in if we match via fnmatch.

This patch introduces a global command-line option (i.e.,
one for "git" itself, not for specific commands) to turn
this behavior off. It also has a matching environment
variable, which can make it easier if you are a script or
porcelain interface that is going to issue many such
commands.

This option cannot turn off globbing for particular
pathspecs. That could eventually be done with a ":(noglob)"
magic pathspec prefix. However, that level of granularity is
more cumbersome to use for many cases, and doing ":(noglob)"
right would mean converting the whole codebase to use
"struct pathspec", as the usual "const char **pathspec"
cannot represent extra per-item flags.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 14:58:59 -08:00
Thomas Ackermann
18499ba694 Remove duplicate entry in ./Documentation/Makefile
Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 10:24:23 -08:00
Junio C Hamano
38104ca6b9 compat/fnmatch: update old-style definition to ANSI
We try to avoid touching borrowed code, but we encourage people to
write without old-style definition and compile with -Werror these
days, and on platforms that need to use NO_FNMATCH, these three
functions make the compilation fail.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 10:20:59 -08:00
W. Trevor King
b928922727 submodule add: If --branch is given, record it in .gitmodules
This allows you to easily record a submodule.<name>.branch option in
.gitmodules when you add a new submodule.  With this patch,

  $ git submodule add -b <branch> <repository> [<path>]
  $ git config -f .gitmodules submodule.<path>.branch <branch>

reduces to

  $ git submodule add -b <branch> <repository> [<path>]

This means that future calls to

  $ git submodule update --remote ...

will get updates from the same branch that you used to initialize the
submodule, which is usually what you want.

Signed-off-by: W. Trevor King <wking@tremily.us>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 09:40:51 -08:00
W. Trevor King
06b1abb5bd submodule update: add --remote for submodule's upstream changes
The current `update` command incorporates the superproject's gitlinked
SHA-1 ($sha1) into the submodule HEAD ($subsha1).  Depending on the
options you use, it may checkout $sha1, rebase the $subsha1 onto
$sha1, or merge $sha1 into $subsha1.  This helps you keep up with
changes in the upstream superproject.

However, it's also useful to stay up to date with changes in the
upstream subproject.  Previous workflows for incorporating such
changes include the ungainly:

  $ git submodule foreach 'git checkout $(git config --file $toplevel/.gitmodules submodule.$name.branch) && git pull'

With this patch, all of the useful functionality for incorporating
superproject changes can be reused to incorporate upstream subproject
updates.  When you specify --remote, the target $sha1 is replaced with
a $sha1 of the submodule's origin/master tracking branch.  If you want
to merge a different tracking branch, you can configure the
`submodule.<name>.branch` option in `.gitmodules`.  You can override
the `.gitmodules` configuration setting for a particular superproject
by configuring the option in that superproject's default configuration
(using the usual configuration hierarchy, e.g. `.git/config`,
`~/.gitconfig`, etc.).

Previous use of submodule.<name>.branch
=======================================

Because we're adding a new configuration option, it's a good idea to
check if anyone else is already using the option.  The foreach-pull
example above was described by Ævar in

  commit f030c96d86
  Author: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  Date:   Fri May 21 16:10:10 2010 +0000

    git-submodule foreach: Add $toplevel variable

Gerrit uses the same interpretation for the setting, but because
Gerrit has direct access to the subproject repositories, it updates
the superproject repositories automatically when a subproject changes.
Gerrit also accepts the special value '.', which it expands into the
superproject's branch name.

Although the --remote functionality is using `submodule.<name>.branch`
slightly differently, the effect is the same.  The foreach-pull
example uses the option to record the name of the local branch to
checkout before pulls.  The tracking branch to be pulled is recorded
in `.git/modules/<name>/config`, which was initialized by the module
clone during `submodule add` or `submodule init`.  Because the branch
name stored in `submodule.<name>.branch` was likely the same as the
branch name used during the initial `submodule add`, the same branch
will be pulled in each workflow.

Implementation details
======================

In order to ensure a current tracking branch state, `update --remote`
fetches the submodule's remote repository before calculating the
SHA-1.  However, I didn't change the logic guarding the existing fetch:

  if test -z "$nofetch"
  then
    # Run fetch only if $sha1 isn't present or it
    # is not reachable from a ref.
    (clear_local_git_env; cd "$path" &&
      ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
       test -z "$rev") || git-fetch)) ||
    die "$(eval_gettext "Unable to fetch in submodule path '\$path'")"
  fi

There will not be a double-fetch, because the new $sha1 determined
after the `--remote` triggered fetch should always exist in the
repository.  If it doesn't, it's because some racy process removed it
from the submodule's repository and we *should* be re-fetching.

Signed-off-by: W. Trevor King <wking@tremily.us>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 09:40:01 -08:00
Junio C Hamano
5a02966685 t9020: use configured Python to run the test helper
The test helper svnrdump_sim.py is used as "svnrdump" during the
execution of this test, but the arrangement was not optimal:

 - it relied on symbolic links;
 - unportable "export VAR=VAL" was used;
 - GIT_BUILD_DIR variable was not quoted correctly;
 - it assumed that the Python interpreter is in /usr/bin/ and
   called "python" (i.e. not "python2.7" etc.)

Rework this by writing a small shell script that spawns the right
Python interpreter, using the right quoting.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19 07:46:59 -08:00