gitweb.git
Merge branch 'mp/complete-paths'Junio C Hamano Fri, 8 Feb 2013 23:28:42 +0000 (15:28 -0800)

Merge branch 'mp/complete-paths'

The completion script used to let the default completer to suggest
pathnames, which gave too many irrelevant choices (e.g. "git add"
would not want to add an unmodified path). Teach it to use a more
git-aware logic to enumerate only relevant ones.

* mp/complete-paths:
git-completion.bash: add support for path completion

Merge branch 'ct/autoconf-htmldir'Junio C Hamano Fri, 8 Feb 2013 23:28:37 +0000 (15:28 -0800)

Merge branch 'ct/autoconf-htmldir'

The autoconf subsystem passed --mandir down to generated
config.mak.autogen but forgot to do the same for --htmldir.

* ct/autoconf-htmldir:
Honor configure's htmldir switch

git-mergetool: print filename when it contains %Asheesh Laroia Fri, 8 Feb 2013 01:16:24 +0000 (17:16 -0800)

git-mergetool: print filename when it contains %

If git-mergetool was invoked with files with a percent sign (%) in
their names, it would print an error. For example, if you were
calling mergetool on a file called "%2F":

printf: %2F: invalid directive

Do not pass random string to printf as if it were a valid format.
Use format string "%s" and pass the string as data to be formatted
instead.

Signed-off-by: Asheesh Laroia <asheesh@asheesh.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

l10n: de.po: translate "reset" as "neu setzen"Ralf Thielow Mon, 28 Jan 2013 18:24:42 +0000 (19:24 +0100)

l10n: de.po: translate "reset" as "neu setzen"

According to the glossary, "reset" should be
translated as "neu setzen" but in a couple of
messages we've translated it as "zurücksetzen".
This fixes that.

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>

l10n: de.po: translate "revision" consistently as ... Ralf Thielow Mon, 28 Jan 2013 17:24:14 +0000 (18:24 +0100)

l10n: de.po: translate "revision" consistently as "Revision"

In the current German translation, the word "revision" was
translated as both "Version" (translation of "commit") and
"Revision". Since a revision in Git is not necessarily a
commit, we should not translate it with the same word in
order to give the user an idea that it's not necessarily
the same. After this commit, "revision" is consistently
translated as "Revision".

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>

l10n: de.po: translate 11 new messagesRalf Thielow Sun, 27 Jan 2013 12:43:46 +0000 (13:43 +0100)

l10n: de.po: translate 11 new messages

Translate 11 new messages came from git.pot update
in 46bc403 (l10n: Update git.pot (11 new, 7 removed
messages)).

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Acked-by: Thomas Rast <trast@inf.ethz.ch>

git-remote-mediawiki: use toplevel's MakefileMatthieu Moy Fri, 8 Feb 2013 17:31:17 +0000 (18:31 +0100)

git-remote-mediawiki: use toplevel's Makefile

This makes the Makefile simpler, while providing more features, and more
consistency (the exact same rules with the exact same configuration as
Git official commands are applied with the new version).

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Makefile: make script-related rules usable from subdire... Matthieu Moy Fri, 8 Feb 2013 17:31:16 +0000 (18:31 +0100)

Makefile: make script-related rules usable from subdirectories

Git's Makefile provides a few nice features for script build and
installation (substitute the first line with the right path, hardcode the
path to Git library, ...).

The Makefile already knows how to process files outside the toplevel
directory with e.g.

make SCRIPT_PERL=path/to/file.perl path/to/file

but we can make it simpler for callers by exposing build, install and
clean rules as .PHONY targets.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

l10n: zh_CN.po: 800+ new translations on command usagesWang Sheng Wed, 30 Jan 2013 09:23:08 +0000 (17:23 +0800)

l10n: zh_CN.po: 800+ new translations on command usages

Most of the 800+ new translations are contributed by Wang Sheng.
So he is a zh_CN l10n maintainer for Git now.

Also fixed translations for some terms, such as blob, dangling.

Signed-off-by: Wang Sheng <wangsheng2008love@163.com>
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>

Use __VA_ARGS__ for all of error's argumentsMatt Kraai Fri, 8 Feb 2013 15:09:28 +0000 (07:09 -0800)

Use __VA_ARGS__ for all of error's arguments

QNX 6.3.2 uses GCC 2.95.3 by default, and GCC 2.95.3 doesn't remove the
comma if the error macro's variable argument is left out.

Instead of testing for a sufficiently recent version of GCC, make
__VA_ARGS__ match all of the arguments.

Signed-off-by: Matt Kraai <matt.kraai@amo.abbott.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Update draft release notes to 1.8.2Junio C Hamano Thu, 7 Feb 2013 23:25:06 +0000 (15:25 -0800)

Update draft release notes to 1.8.2

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

Sync with 1.8.1.3Junio C Hamano Thu, 7 Feb 2013 23:21:49 +0000 (15:21 -0800)

Sync with 1.8.1.3

Git 1.8.1.3 v1.8.1.3Junio C Hamano Thu, 7 Feb 2013 23:21:10 +0000 (15:21 -0800)

Git 1.8.1.3

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

Merge branch 'mz/pick-unborn' into maintJunio C Hamano Thu, 7 Feb 2013 23:16:04 +0000 (15:16 -0800)

Merge branch 'mz/pick-unborn' into maint

"git cherry-pick" did not replay a root commit to an unborn branch.

* mz/pick-unborn:
learn to pick/revert into unborn branch
tests: move test_cmp_rev to test-lib-functions

Merge branch 'nd/fix-perf-parameters-in-tests' into... Junio C Hamano Thu, 7 Feb 2013 23:16:00 +0000 (15:16 -0800)

Merge branch 'nd/fix-perf-parameters-in-tests' into maint

* nd/fix-perf-parameters-in-tests:
test-lib.sh: unfilter GIT_PERF_*

Merge branch 'jc/do-not-let-random-file-interfere-with... Junio C Hamano Thu, 7 Feb 2013 23:15:23 +0000 (15:15 -0800)

Merge branch 'jc/do-not-let-random-file-interfere-with-completion-tests' into maint

Scripts to test bash completion was inherently flaky as it was
affected by whatever random things the user may have on $PATH.

* jc/do-not-let-random-file-interfere-with-completion-tests:
t9902: protect test from stray build artifacts

Merge branch 'ft/transport-report-segv' into maintJunio C Hamano Thu, 7 Feb 2013 23:15:08 +0000 (15:15 -0800)

Merge branch 'ft/transport-report-segv' into maint

A failure to push due to non-ff while on an unborn branch
dereferenced a NULL pointer when showing an error message.

* ft/transport-report-segv:
push: fix segfault when HEAD points nowhere

Merge branch 'sb/gpg-plug-fd-leak' into maintJunio C Hamano Thu, 7 Feb 2013 23:14:54 +0000 (15:14 -0800)

Merge branch 'sb/gpg-plug-fd-leak' into maint

We forgot to close the file descriptor reading from "gpg" output,
killing "git log --show-signature" on a long history.

* sb/gpg-plug-fd-leak:
gpg: close stderr once finished with it in verify_signed_buffer()

Merge branch 'jc/fake-ancestor-with-non-blobs' into... Junio C Hamano Thu, 7 Feb 2013 23:14:22 +0000 (15:14 -0800)

Merge branch 'jc/fake-ancestor-with-non-blobs' into maint

Rebasing the history of superproject with change in the submodule
has been broken since v1.7.12.

* jc/fake-ancestor-with-non-blobs:
apply: diagnose incomplete submodule object name better
apply: simplify build_fake_ancestor()
git-am: record full index line in the patch used while rebasing

Merge branch 'jn/auto-depend-workaround-buggy-ccache... Junio C Hamano Thu, 7 Feb 2013 23:13:34 +0000 (15:13 -0800)

Merge branch 'jn/auto-depend-workaround-buggy-ccache' into maint

Buggy versions of ccache broke the auto-generation of dependencies.

* jn/auto-depend-workaround-buggy-ccache:
Makefile: explicitly set target name for autogenerated dependencies

Merge branch 'da/mergetool-docs'Junio C Hamano Thu, 7 Feb 2013 22:42:08 +0000 (14:42 -0800)

Merge branch 'da/mergetool-docs'

Build on top of the clean-up done by jk/mergetool and automatically
generate the list of mergetool and difftool backends the build
supports to be included in the documentation.

* da/mergetool-docs:
doc: generate a list of valid merge tools
mergetool--lib: list user configured tools in '--tool-help'
mergetool--lib: add functions for finding available tools
mergetool--lib: improve the help text in guess_merge_tool()
mergetool--lib: simplify command expressions

Merge branch 'ss/mergetools-tortoise'Junio C Hamano Thu, 7 Feb 2013 22:42:01 +0000 (14:42 -0800)

Merge branch 'ss/mergetools-tortoise'

Update mergetools to work better with newer merge helper tortoise ships.

* ss/mergetools-tortoise:
mergetools: teach tortoisemerge to handle filenames with SP correctly
mergetools: support TortoiseGitMerge

Merge branch 'jk/mergetool'Junio C Hamano Thu, 7 Feb 2013 22:41:57 +0000 (14:41 -0800)

Merge branch 'jk/mergetool'

Cleans up mergetool/difftool combo.

* jk/mergetool:
mergetools: simplify how we handle "vim" and "defaults"
mergetool--lib: don't call "exit" in setup_tool
mergetool--lib: improve show_tool_help() output
mergetools/vim: remove redundant diff command
git-difftool: use git-mergetool--lib for "--tool-help"
git-mergetool: don't hardcode 'mergetool' in show_tool_help
git-mergetool: remove redundant assignment
git-mergetool: move show_tool_help to mergetool--lib

Merge branch 'jk/doc-makefile-cleanup'Junio C Hamano Thu, 7 Feb 2013 22:41:51 +0000 (14:41 -0800)

Merge branch 'jk/doc-makefile-cleanup'

* jk/doc-makefile-cleanup:
Documentation/Makefile: clean up MAN*_TXT lists

Merge branch 'jk/remote-helpers-doc'Junio C Hamano Thu, 7 Feb 2013 22:41:45 +0000 (14:41 -0800)

Merge branch 'jk/remote-helpers-doc'

"git help remote-helpers" did not work; 'remote-helpers' is not
a subcommand name but a concept, so its documentation should have
been in gitremote-helpers, not git-remote-helpers.

* jk/remote-helpers-doc:
Rename {git- => git}remote-helpers.txt

Merge branch 'sb/run-command-fd-error-reporting'Junio C Hamano Thu, 7 Feb 2013 22:41:42 +0000 (14:41 -0800)

Merge branch 'sb/run-command-fd-error-reporting'

* sb/run-command-fd-error-reporting:
run-command: be more informative about what failed

Merge branch 'nd/branch-error-cases'Junio C Hamano Thu, 7 Feb 2013 22:41:38 +0000 (14:41 -0800)

Merge branch 'nd/branch-error-cases'

Fix various error messages and conditions in "git branch", e.g. we
advertised "branch -d/-D" to remove one or more branches but actually
implemented removal of zero or more branches---request to remove no
branches was not rejected.

* nd/branch-error-cases:
branch: let branch filters imply --list
docs: clarify git-branch --list behavior
branch: mark more strings for translation
branch: give a more helpful message on redundant arguments
branch: reject -D/-d without branch name

Merge branch 'sb/gpg-i18n'Junio C Hamano Thu, 7 Feb 2013 22:41:34 +0000 (14:41 -0800)

Merge branch 'sb/gpg-i18n'

* sb/gpg-i18n:
gpg: allow translation of more error messages

Merge branch 'jk/python-styles'Junio C Hamano Thu, 7 Feb 2013 22:41:31 +0000 (14:41 -0800)

Merge branch 'jk/python-styles'

* jk/python-styles:
CodingGuidelines: add Python coding guidelines

Merge branch 'ab/gitweb-use-same-scheme'Junio C Hamano Thu, 7 Feb 2013 22:41:24 +0000 (14:41 -0800)

Merge branch 'ab/gitweb-use-same-scheme'

Avoid mixed contents on a page coming via http and https when
gitweb is hosted on a https server.

* ab/gitweb-use-same-scheme:
gitweb: refer to picon/gravatar images over the same scheme

upload/receive-pack: allow hiding ref hierarchiesJunio C Hamano Sat, 19 Jan 2013 00:08:30 +0000 (16:08 -0800)

upload/receive-pack: allow hiding ref hierarchies

A repository may have refs that are only used for its internal
bookkeeping purposes that should not be exposed to the others that
come over the network.

Teach upload-pack to omit some refs from its initial advertisement
by paying attention to the uploadpack.hiderefs multi-valued
configuration variable. Do the same to receive-pack via the
receive.hiderefs variable. As a convenient short-hand, allow using
transfer.hiderefs to set the value to both of these variables.

Any ref that is under the hierarchies listed on the value of these
variable is excluded from responses to requests made by "ls-remote",
"fetch", etc. (for upload-pack) and "push" (for receive-pack).

Because these hidden refs do not count as OUR_REF, an attempt to
fetch objects at the tip of them will be rejected, and because these
refs do not get advertised, "git push :" will not see local branches
that have the same name as them as "matching" ones to be sent.

An attempt to update/delete these hidden refs with an explicit
refspec, e.g. "git push origin :refs/hidden/22", is rejected. This
is not a new restriction. To the pusher, it would appear that there
is no such ref, so its push request will conclude with "Now that I
sent you all the data, it is time for you to update the refs. I saw
that the ref did not exist when I started pushing, and I want the
result to point at this commit". The receiving end will apply the
compare-and-swap rule to this request and rejects the push with
"Well, your update request conflicts with somebody else; I see there
is such a ref.", which is the right thing to do. Otherwise a push to
a hidden ref will always be "the last one wins", which is not a good
default.

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

graph: output padding for merge subsequent parentsJohn Keeping Thu, 7 Feb 2013 20:15:23 +0000 (20:15 +0000)

graph: output padding for merge subsequent parents

When showing merges in git-log, the same commit is shown once for each
parent. Combined with "--graph" this results in graph_show_commit()
being called once for each parent without graph_update() being called.

Currently graph_show_commit() does not print anything on subsequent
invocations for the same commit (this was changed by commit 656197a -
"graph.c: infinite loop in git whatchanged --graph -m" from the previous
behaviour of looping infinitely).

Change this so that if the graph code believes it has already shown the
commit it prints a single padding line.

Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Update CodingGuidelines for PerlTed Zlatanov Wed, 6 Feb 2013 19:49:01 +0000 (14:49 -0500)

Update CodingGuidelines for Perl

Add the coding guidelines for Perl.

Signed-off-by: Ted Zlatanov <tzz@lifelogs.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

http_request: reset "type" strbuf before addingJeff King Wed, 6 Feb 2013 10:39:52 +0000 (05:39 -0500)

http_request: reset "type" strbuf before adding

Callers may pass us a strbuf which we use to record the
content-type of the response. However, we simply appended to
it rather than overwriting its contents, meaning that cruft
in the strbuf gave us a bogus type. E.g., the multiple
requests triggered by http_request could yield a type like
"text/plainapplication/x-git-receive-pack-advertisement".

Reported-by: Michael Schubert <mschub@elegosoft.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Update draft release notes to 1.8.2Junio C Hamano Wed, 6 Feb 2013 00:20:16 +0000 (16:20 -0800)

Update draft release notes to 1.8.2

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

Merge branch 'jn/auto-depend-workaround-buggy-ccache'Junio C Hamano Wed, 6 Feb 2013 00:13:52 +0000 (16:13 -0800)

Merge branch 'jn/auto-depend-workaround-buggy-ccache'

An age-old workaround to prevent buggy versions of ccache from
breaking the auto-generation of dependencies, which unfortunately
is still relevant because some people use ancient distros.

* jn/auto-depend-workaround-buggy-ccache:
Makefile: explicitly set target name for autogenerated dependencies

Merge branch 'ta/doc-no-small-caps'Junio C Hamano Wed, 6 Feb 2013 00:13:32 +0000 (16:13 -0800)

Merge branch 'ta/doc-no-small-caps'

Update documentation to change "GIT" which was a poor-man's small
caps to "Git". The latter was the intended spelling.

Also change "git" spelled in all-lowercase to "Git" when it refers
to the system as the whole or the concept it embodies, as opposed to
the command the end users would type.

* ta/doc-no-small-caps:
Documentation: StGit is the right spelling, not StGIT
Documentation: describe the "repository" in repository-layout
Documentation: add a description for 'gitfile' to glossary
Documentation: do not use undefined terms git-dir and git-file
Documentation: the name of the system is 'Git', not 'git'
Documentation: avoid poor-man's small caps GIT

Merge branch 'jc/fake-ancestor-with-non-blobs'Junio C Hamano Wed, 6 Feb 2013 00:13:11 +0000 (16:13 -0800)

Merge branch 'jc/fake-ancestor-with-non-blobs'

Rebasing the history of superproject with change in the submodule
was broken since v1.7.12.

* jc/fake-ancestor-with-non-blobs:
apply: diagnose incomplete submodule object name better
apply: simplify build_fake_ancestor()
git-am: record full index line in the patch used while rebasing

Merge branch 'sb/gpg-plug-fd-leak'Junio C Hamano Wed, 6 Feb 2013 00:12:43 +0000 (16:12 -0800)

Merge branch 'sb/gpg-plug-fd-leak'

We forgot to close the file descriptor reading from "gpg" output,
killing "git log --show-signature" on a long history.

* sb/gpg-plug-fd-leak:
gpg: close stderr once finished with it in verify_signed_buffer()

Merge branch 'ft/transport-report-segv'Junio C Hamano Wed, 6 Feb 2013 00:12:32 +0000 (16:12 -0800)

Merge branch 'ft/transport-report-segv'

A failure to push due to non-ff while on an unborn branch
dereferenced a NULL pointer when showing an error message.

* ft/transport-report-segv:
push: fix segfault when HEAD points nowhere

contrib/subtree: make the manual directory if neededJesper L. Nielsen Tue, 5 Feb 2013 04:06:06 +0000 (22:06 -0600)

contrib/subtree: make the manual directory if needed

Before install git-subtree documentation, make sure the manpage
directory exists.

Signed-off-by: Jesper L. Nielsen <lyager@gmail.com>
Signed-off-by: David A. Greene <greened@obbligato.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/subtree: honor DESTDIRAdam Tkac Tue, 5 Feb 2013 04:06:05 +0000 (22:06 -0600)

contrib/subtree: honor DESTDIR

Teach git-subtree's Makefile to honor DESTDIR.

Signed-off-by: Adam Tkac <atkac@redhat.com>
Signed-off-by: David A. Greene <greened@obbligato.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/subtree: fix synopsisDavid A. Greene Tue, 5 Feb 2013 04:06:04 +0000 (22:06 -0600)

contrib/subtree: fix synopsis

Fix the documentation of add to show that a repository can be
specified along with a commit.

Suggested by Yann Dirson <dirson@bertin.fr>.

Signed-off-by: David A. Greene <greened@obbligato.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/subtree: better error handling for 'subtree... David A. Greene Tue, 5 Feb 2013 04:06:03 +0000 (22:06 -0600)

contrib/subtree: better error handling for 'subtree add'

Check refspecs for validity before passing them on to other commands.
This lets us generate more helpful error messages.

Signed-off-by: David A. Greene <greened@obbligato.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/subtree: use %B for split subject/bodyTechlive Zheng Tue, 5 Feb 2013 04:06:02 +0000 (22:06 -0600)

contrib/subtree: use %B for split subject/body

Use %B to format the commit message and body to avoid an extra newline
if a commit only has a subject line.

Signed-off-by: Techlive Zheng <techlivezheng@gmail.com>
Signed-off-by: David A. Greene <greened@obbligato.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/subtree: remove test number commentsDavid A. Greene Tue, 5 Feb 2013 04:06:01 +0000 (22:06 -0600)

contrib/subtree: remove test number comments

Delete the comments indicating test numbers as it causes maintenance
headaches. t*.sh -i will help us find any broken tests and these
numbers are not helping us anyway.

Signed-off-by: David A. Greene <greened@obbligato.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t4038: add tests for "diff --cc --raw <trees>"John Keeping Tue, 5 Feb 2013 21:39:49 +0000 (21:39 +0000)

t4038: add tests for "diff --cc --raw <trees>"

Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

apply: verify submodule commit object name betterJunio C Hamano Tue, 5 Feb 2013 19:19:32 +0000 (11:19 -0800)

apply: verify submodule commit object name better

A textual patch also records the submodule commit object name in
full. Make the parsing more robust by reading from there and
verifying the (possibly abbreviated) name on the index line matches.

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

status: show the branch name if possible in in-progress... Nguyễn Thái Ngọc Duy Sun, 3 Feb 2013 05:53:27 +0000 (12:53 +0700)

status: show the branch name if possible in in-progress info

The typical use-case is starting a rebase, do something else, come
back the day after, run "git status" or make a new commit and wonder
what in the world's going on. Which branch is being rebased is
probably the most useful tidbit to help, but the target may help
too.

Ideally, I would have loved to see "rebasing master on
origin/master", but the target ref name is not stored during rebase,
so this patch writes "rebasing master on a78c8c98b" as a
half-measure to remind future users of that potential improvement.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t5551: fix expected error outputJunio C Hamano Tue, 5 Feb 2013 00:21:42 +0000 (16:21 -0800)

t5551: fix expected error output

We should probably get rid of the check of message instead, but in
the meantime this should do.

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

Update draft release notes to 1.8.2Junio C Hamano Mon, 4 Feb 2013 18:44:26 +0000 (10:44 -0800)

Update draft release notes to 1.8.2

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

Merge branch 'maint'Junio C Hamano Mon, 4 Feb 2013 18:26:11 +0000 (10:26 -0800)

Merge branch 'maint'

* maint:
Start preparing for 1.8.1.3

Merge branch 'jk/remote-helpers-in-python-3'Junio C Hamano Mon, 4 Feb 2013 18:25:34 +0000 (10:25 -0800)

Merge branch 'jk/remote-helpers-in-python-3'

Prepare remote-helper test written in Python to be run with Python3.

* jk/remote-helpers-in-python-3:
git_remote_helpers: remove GIT-PYTHON-VERSION upon "clean"
git-remote-testpy: fix path hashing on Python 3
git-remote-testpy: call print as a function
git-remote-testpy: don't do unbuffered text I/O
git-remote-testpy: hash bytes explicitly
svn-fe: allow svnrdump_sim.py to run with Python 3
git_remote_helpers: use 2to3 if building with Python 3
git_remote_helpers: force rebuild if python version changes
git_remote_helpers: fix input when running under Python 3
git_remote_helpers: allow building with Python 3

Merge branch 'pw/git-p4-on-cygwin'Junio C Hamano Mon, 4 Feb 2013 18:25:30 +0000 (10:25 -0800)

Merge branch 'pw/git-p4-on-cygwin'

Improve "git p4" on Cygwin.

* pw/git-p4-on-cygwin: (21 commits)
git p4: introduce gitConfigBool
git p4: avoid shell when calling git config
git p4: avoid shell when invoking git config --get-all
git p4: avoid shell when invoking git rev-list
git p4: avoid shell when mapping users
git p4: disable read-only attribute before deleting
git p4 test: use test_chmod for cygwin
git p4: cygwin p4 client does not mark read-only
git p4 test: avoid wildcard * in windows
git p4 test: use LineEnd unix in windows tests too
git p4 test: newline handling
git p4: scrub crlf for utf16 files on windows
git p4: remove unreachable windows \r\n conversion code
git p4 test: translate windows paths for cygwin
git p4 test: start p4d inside its db dir
git p4 test: use client_view in t9806
git p4 test: avoid loop in client_view
git p4 test: use client_view to build the initial client
git p4: generate better error message for bad depot path
git p4: remove unused imports
...

Merge branch 'jk/read-commit-buffer-data-after-free'Junio C Hamano Mon, 4 Feb 2013 18:25:18 +0000 (10:25 -0800)

Merge branch 'jk/read-commit-buffer-data-after-free'

Clarify the ownership rule for commit->buffer field, which some
callers incorrectly accessed without making sure it is populated.

* jk/read-commit-buffer-data-after-free:
logmsg_reencode: lazily load missing commit buffers
logmsg_reencode: never return NULL
commit: drop useless xstrdup of commit message

Merge branch 'mm/add-u-A-sans-pathspec'Junio C Hamano Mon, 4 Feb 2013 18:25:13 +0000 (10:25 -0800)

Merge branch 'mm/add-u-A-sans-pathspec'

Forbid "git add -u" and "git add -A" without pathspec run from a
subdirectory, to train people to type "." (or ":/") to make the
choice of default does not matter.

* mm/add-u-A-sans-pathspec:
add: warn when -u or -A is used without pathspec

Merge branch 'jc/push-reject-reasons'Junio C Hamano Mon, 4 Feb 2013 18:25:04 +0000 (10:25 -0800)

Merge branch 'jc/push-reject-reasons'

Improve error and advice messages given locally when "git push"
refuses when it cannot compute fast-forwardness by separating these
cases from the normal "not a fast-forward; merge first and push
again" case.

* jc/push-reject-reasons:
push: finishing touches to explain REJECT_ALREADY_EXISTS better
push: introduce REJECT_FETCH_FIRST and REJECT_NEEDS_FORCE
push: further simplify the logic to assign rejection reason
push: further clean up fields of "struct ref"

Merge branch 'jk/config-parsing-cleanup'Junio C Hamano Mon, 4 Feb 2013 18:24:50 +0000 (10:24 -0800)

Merge branch 'jk/config-parsing-cleanup'

Configuration parsing for tar.* configuration variables were
broken. Introduce a new config-keyname parser API to make the
callers much less error prone.

* jk/config-parsing-cleanup:
reflog: use parse_config_key in config callback
help: use parse_config_key for man config
submodule: simplify memory handling in config parsing
submodule: use parse_config_key when parsing config
userdiff: drop parse_driver function
convert some config callbacks to parse_config_key
archive-tar: use parse_config_key when parsing config
config: add helper function for parsing key names

Merge branch 'jc/custom-comment-char'Junio C Hamano Mon, 4 Feb 2013 18:23:49 +0000 (10:23 -0800)

Merge branch 'jc/custom-comment-char'

Allow a configuration variable core.commentchar to customize the
character used to comment out the hint lines in the edited text from
the default '#'.

* jc/custom-comment-char:
Allow custom "comment char"

Verify Content-Type from smart HTTP serversShawn Pearce Thu, 31 Jan 2013 21:02:07 +0000 (13:02 -0800)

Verify Content-Type from smart HTTP servers

Before parsing a suspected smart-HTTP response verify the returned
Content-Type matches the standard. This protects a client from
attempting to process a payload that smells like a smart-HTTP
server response.

JGit has been doing this check on all responses since the dawn of
time. I mistakenly failed to include it in git-core when smart HTTP
was introduced. At the time I didn't know how to get the Content-Type
from libcurl. I punted, meant to circle back and fix this, and just
plain forgot about it.

Signed-off-by: Shawn Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Start preparing for 1.8.1.3Junio C Hamano Mon, 4 Feb 2013 18:21:10 +0000 (10:21 -0800)

Start preparing for 1.8.1.3

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

Merge branch 'bc/git-p4-for-python-2.4' into maintJunio C Hamano Mon, 4 Feb 2013 18:04:57 +0000 (10:04 -0800)

Merge branch 'bc/git-p4-for-python-2.4' into maint

* bc/git-p4-for-python-2.4:
INSTALL: git-p4 does not support Python 3
git-p4.py: support Python 2.4
git-p4.py: support Python 2.5

Merge branch 'nd/edit-branch-desc-while-detached' into... Junio C Hamano Mon, 4 Feb 2013 18:04:44 +0000 (10:04 -0800)

Merge branch 'nd/edit-branch-desc-while-detached' into maint

Attempt to "branch --edit-description" an existing branch, while
being on a detached HEAD, errored out.

* nd/edit-branch-desc-while-detached:
branch: no detached HEAD check when editing another branch's description

Merge branch 'jn/do-not-drop-username-when-reading... Junio C Hamano Mon, 4 Feb 2013 18:04:26 +0000 (10:04 -0800)

Merge branch 'jn/do-not-drop-username-when-reading-from-etc-mailname' into maint

We used to stuff "user@" and then append what we read from
/etc/mailname to come up with a default e-mail ident, but a bug lost
the "user@" part.

* jn/do-not-drop-username-when-reading-from-etc-mailname:
ident: do not drop username when reading from /etc/mailname

Merge branch 'jk/cvsimport-does-not-work-with-cvsps3... Junio C Hamano Mon, 4 Feb 2013 18:04:22 +0000 (10:04 -0800)

Merge branch 'jk/cvsimport-does-not-work-with-cvsps3' into maint

* jk/cvsimport-does-not-work-with-cvsps3:
git-cvsimport.txt: cvsps-2 is deprecated

Merge branch 'dl/am-hg-locale' into maintJunio C Hamano Mon, 4 Feb 2013 18:04:10 +0000 (10:04 -0800)

Merge branch 'dl/am-hg-locale' into maint

"git am" did not parse datestamp correctly from Hg generated patch,
when it is run in a locale outside C (or en)

* dl/am-hg-locale:
am: invoke perl's strftime in C locale

Merge branch 'jc/help' into maintJunio C Hamano Mon, 4 Feb 2013 18:04:06 +0000 (10:04 -0800)

Merge branch 'jc/help' into maint

* jc/help:
help: include <common-cmds.h> only in one file

Merge branch 'jc/merge-blobs' into maintJunio C Hamano Mon, 4 Feb 2013 18:03:41 +0000 (10:03 -0800)

Merge branch 'jc/merge-blobs' into maint

* jc/merge-blobs:
Makefile: Replace merge-file.h with merge-blobs.h in LIB_H
merge-tree: fix d/f conflicts
merge-tree: add comments to clarify what these functions are doing
merge-tree: lose unused "resolve_directories"
merge-tree: lose unused "flags" from merge_list
Which merge_file() function do you mean?

Merge branch 'jc/doc-maintainer' into maintJunio C Hamano Mon, 4 Feb 2013 18:03:35 +0000 (10:03 -0800)

Merge branch 'jc/doc-maintainer' into maint

* jc/doc-maintainer:
howto/maintain: document "### match next" convention in jch/pu branch
howto/maintain: mark titles for asciidoc
Documentation: update "howto maintain git"

Merge branch 'bc/fix-array-syntax-for-3.0-in-completion... Junio C Hamano Mon, 4 Feb 2013 18:03:13 +0000 (10:03 -0800)

Merge branch 'bc/fix-array-syntax-for-3.0-in-completion-bash' into maint

Command line completion code was inadvertently made incompatible with
older versions of bash by using a newer array notation.

* bc/fix-array-syntax-for-3.0-in-completion-bash:
git-completion.bash: replace zsh notation that breaks bash 3.X

completion: handle path completion and colon for tcsh... Marc Khouzam Sat, 2 Feb 2013 19:43:25 +0000 (19:43 +0000)

completion: handle path completion and colon for tcsh script

Recent enhancements to git-completion.bash provide intelligent path
completion for git commands. Such completions do not provide the
'/' at the end of directories for recent versions of bash; instead,
bash itself will add the trailing slash to directories to the result
provided by git-completion.bash. However, the completion for tcsh
uses the result of the bash completion script directly, so it either
needs to add the necessary slash itself, or needs to ask the bash
script to keep the trailing slash.

Adding the slash itself is difficult because we have to check the
each path in the output of the bash script to see if it is meant to
be a directory or something else. For example, assuming there is a
directory named 'commit' in the current directory, then, when
completing

git add commit<tab>

we would need to add a slash, but for

git help commit<tab>

we should not.

Figuring out such differences would require adding much intelligence
to the tcsh completion script. Instead, it is simpler to ask the
bash script to keep the trailing slash. This patch does this.

Also, tcsh does not handle the colon as a completion separator so we
remove it from the list of separators.

Signed-off-by: Marc Khouzam <marc.khouzam@ericsson.com>

builtin/apply: tighten (dis)similarity index parsingJohn Keeping Sun, 3 Feb 2013 14:37:11 +0000 (14:37 +0000)

builtin/apply: tighten (dis)similarity index parsing

This was prompted by an incorrect warning issued by clang [1], and a
suggestion by Linus to restrict the range to check for values greater
than INT_MAX since these will give bogus output after casting to int.

In fact the (dis)similarity index is a percentage, so reject values
greater than 100.

[1] http://article.gmane.org/gmane.comp.version-control.git/213857

Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

combine-diff: lift 32-way limit of combined diffJunio C Hamano Sun, 3 Feb 2013 21:08:18 +0000 (13:08 -0800)

combine-diff: lift 32-way limit of combined diff

The "raw" format of combine-diff output is supposed to have as many
colons as there are parents at the beginning, then blob modes for
these parents, and then object names for these parents.

We weren't however prepared to handle a more than 32-way merge and
did not show the correct number of colons in such a case.

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

doc: generate a list of valid merge toolsDavid Aguilar Mon, 28 Jan 2013 00:52:26 +0000 (16:52 -0800)

doc: generate a list of valid merge tools

Use the show_tool_names() function to build lists of all
the built-in tools supported by difftool and mergetool.
This frees us from needing to update the documentation
whenever a new tool is added.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

mergetool--lib: list user configured tools in '--tool... John Keeping Wed, 30 Jan 2013 19:55:46 +0000 (19:55 +0000)

mergetool--lib: list user configured tools in '--tool-help'

Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

mergetool--lib: add functions for finding available... David Aguilar Mon, 28 Jan 2013 00:52:25 +0000 (16:52 -0800)

mergetool--lib: add functions for finding available tools

Refactor show_tool_help() so that the tool-finding logic is broken out
into a separate show_tool_names() function.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Honor configure's htmldir switchChristoph J. Thompson Sat, 2 Feb 2013 21:25:11 +0000 (22:25 +0100)

Honor configure's htmldir switch

Honor autoconf's --htmldir switch. This allows relocating HTML docs
straight from the configure script.

Signed-off-by: Christoph J. Thompson <cjsthompson@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Makefile: explicitly set target name for autogenerated... Jonathan Nieder Fri, 18 Nov 2011 23:23:24 +0000 (17:23 -0600)

Makefile: explicitly set target name for autogenerated dependencies

"gcc -MF depfile -MMD -MP -c -o path/to/file.o" produces a makefile
snippet named "depfile" describing what files are needed to build the
target given by "-o". When ccache versions before v3.0pre0~187 (Fix
handling of the -MD and -MDD options, 2009-11-01) run, they execute

gcc -MF depfile -MMD -MP -E

instead to get the final content for hashing. Notice that the "-c -o"
combination is replaced by "-E". The result is a target name without
a leading path.

Thus when building git with such versions of ccache with
COMPUTE_HEADER_DEPENDENCIES enabled, the generated makefile snippets
define dependencies for the wrong target:

$ make builtin/add.o
GIT_VERSION = 1.7.8.rc3
* new build flags or prefix
CC builtin/add.o
$ head -1 builtin/.depend/add.o.d
add.o: builtin/add.c cache.h git-compat-util.h compat/bswap.h strbuf.h \

After a change in a header file, object files in a subdirectory are
not automatically rebuilt by "make":

$ touch cache.h
$ make builtin/add.o
$

Luckily we can prevent trouble by explicitly supplying the name of the
target to ccache and gcc, using the -MQ option. Do so.

Reported-and-tested-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Reported-by: : 허종만 <jongman.heo@samsung.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

mergetools: teach tortoisemerge to handle filenames... Sven Strickroth Fri, 1 Feb 2013 20:16:30 +0000 (21:16 +0100)

mergetools: teach tortoisemerge to handle filenames with SP correctly

TortoiseGitMerge, unlike TortoiseMerge, can be told to handle paths
with spaces in them by using -option "$FILE" (not -option:"$FILE",
which does not work for such paths) syntax.

This change was necessary because of MSYS path mangling [1], the ":"
after the "base" etc. arguments to TortoiseMerge caused the whole
argument instead of just the file name to be quoted in case of file
names with spaces. So TortoiseMerge was passed

"-base:new file.txt"

instead of

-base:"new file.txt"

(including the quotes). To work around this, TortoiseGitMerge does not
require the ":" after the arguments anymore which fixes handling file
names with spaces [2] (as written above).

[1] http://www.mingw.org/wiki/Posix_path_conversion
[2] https://github.com/msysgit/msysgit/issues/57

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Reported-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Rename {git- => git}remote-helpers.txtJohn Keeping Thu, 31 Jan 2013 21:59:50 +0000 (21:59 +0000)

Rename {git- => git}remote-helpers.txt

When looking up a topic via "git help <topic>", git-help prepends "git-"
to topics that are the names of commands (either builtin or found on the
path) and "git" (no hyphen) to any other topic name.

"git-remote-helpers" is not the name of a command, so "git help
remote-helpers" looks for "gitremote-helpers" and does not find it.

Fix this by renaming "git-remote-helpers.txt" to
"gitremote-helpers.txt".

Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

run-command: be more informative about what failedStephen Boyd Thu, 31 Jan 2013 02:01:05 +0000 (18:01 -0800)

run-command: be more informative about what failed

While debugging an error with verify_signed_buffer() the error
messages from run-command weren't very useful:

error: cannot create pipe for gpg: Too many open files
error: could not run gpg.

because they didn't indicate *which* pipe couldn't be created.

Print which pipe failed to be created in the error message so we
can more easily debug similar problems in the future.

For example, the above error now prints:

error: cannot create standard error pipe for gpg: Too many open files
error: could not run gpg.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation: StGit is the right spelling, not StGITThomas Ackermann Fri, 1 Feb 2013 18:08:56 +0000 (19:08 +0100)

Documentation: StGit is the right spelling, not StGIT

They refer themselves as such at https://gna.org/projects/stgit/

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation: describe the "repository" in repository... Junio C Hamano Fri, 1 Feb 2013 19:26:35 +0000 (11:26 -0800)

Documentation: describe the "repository" in repository-layout

Update the introductory part and concisely explain how gitfile is
handled, what it is used for and for what effect.

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

Documentation: add a description for 'gitfile' to glossaryThomas Ackermann Fri, 1 Feb 2013 18:11:24 +0000 (19:11 +0100)

Documentation: add a description for 'gitfile' to glossary

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation: do not use undefined terms git-dir and... Thomas Ackermann Fri, 1 Feb 2013 18:07:56 +0000 (19:07 +0100)

Documentation: do not use undefined terms git-dir and git-file

We will add gitfile to the glossary in a separate commit.

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation: the name of the system is 'Git', not... Thomas Ackermann Mon, 21 Jan 2013 19:17:53 +0000 (20:17 +0100)

Documentation: the name of the system is 'Git', not 'git'

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation: avoid poor-man's small caps GITThomas Ackermann Mon, 21 Jan 2013 19:16:20 +0000 (20:16 +0100)

Documentation: avoid poor-man's small caps GIT

In the earlier days, we used to spell the name of the system as GIT,
to simulate as if it were typeset with capital G and IT in small
caps. Later we stopped doing so at around 1.6.5 days.

Let's stop doing so throughout the documentation. The name to refer
to the whole system (and the concept it embodies) is "Git"; the
command end-users type is "git". And document this in the coding
guideline.

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Update draft release notes to 1.8.2Junio C Hamano Fri, 1 Feb 2013 20:52:08 +0000 (12:52 -0800)

Update draft release notes to 1.8.2

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

Merge branch 'nd/edit-branch-desc-while-detached'Junio C Hamano Fri, 1 Feb 2013 20:40:52 +0000 (12:40 -0800)

Merge branch 'nd/edit-branch-desc-while-detached'

Attempt to "branch --edit-description" an existing branch, while
being on a detached HEAD, errored out.

* nd/edit-branch-desc-while-detached:
branch: no detached HEAD check when editing another branch's description

Merge branch 'jk/gc-auto-after-fetch'Junio C Hamano Fri, 1 Feb 2013 20:40:16 +0000 (12:40 -0800)

Merge branch 'jk/gc-auto-after-fetch'

Help "fetch only" repositories that do not trigger "gc --auto"
often enough.

* jk/gc-auto-after-fetch:
fetch-pack: avoid repeatedly re-scanning pack directory
fetch: run gc --auto after fetching

Merge branch 'bc/git-p4-for-python-2.4'Junio C Hamano Fri, 1 Feb 2013 20:40:10 +0000 (12:40 -0800)

Merge branch 'bc/git-p4-for-python-2.4'

With small updates to remove dependency on newer features of
Python, keep git-p4 usable with older Python.

* bc/git-p4-for-python-2.4:
INSTALL: git-p4 does not support Python 3
git-p4.py: support Python 2.4
git-p4.py: support Python 2.5

Merge branch 'jn/do-not-drop-username-when-reading... Junio C Hamano Fri, 1 Feb 2013 20:40:05 +0000 (12:40 -0800)

Merge branch 'jn/do-not-drop-username-when-reading-from-etc-mailname'

We used to stuff "user@" and then append what we read from
/etc/mailname to come up with a default e-mail ident, but a bug
lost the "user@" part. This is to fix it.

* jn/do-not-drop-username-when-reading-from-etc-mailname:
ident: do not drop username when reading from /etc/mailname

Merge branch 'jk/cvsimport-does-not-work-with-cvsps3'Junio C Hamano Fri, 1 Feb 2013 20:39:59 +0000 (12:39 -0800)

Merge branch 'jk/cvsimport-does-not-work-with-cvsps3'

Warn people that other tools are more recommendable over
cvsimport+cvsps2 combo when doing a one-shot import, and cvsimport
will not work with cvsps3.

* jk/cvsimport-does-not-work-with-cvsps3:
git-cvsimport.txt: cvsps-2 is deprecated

Merge branch 'jc/do-not-let-random-file-interfere-with... Junio C Hamano Fri, 1 Feb 2013 20:39:46 +0000 (12:39 -0800)

Merge branch 'jc/do-not-let-random-file-interfere-with-completion-tests'

Scripts to test bash completion was inherently flaky as it was
affected by whatever random things the user may have on $PATH.

* jc/do-not-let-random-file-interfere-with-completion-tests:
t9902: protect test from stray build artifacts

Merge branch 'as/test-cleanup'Junio C Hamano Fri, 1 Feb 2013 20:39:42 +0000 (12:39 -0800)

Merge branch 'as/test-cleanup'

* as/test-cleanup:
t7102 (reset): don't hardcode SHA-1 in expected outputs

Merge branch 'jc/no-git-config-in-clone'Junio C Hamano Fri, 1 Feb 2013 20:39:36 +0000 (12:39 -0800)

Merge branch 'jc/no-git-config-in-clone'

We stopped paying attention to $GIT_CONFIG environment that points
at a single configuration file from any command other than "git config"
quite a while ago, but "git clone" internally set, exported, and
then unexported the variable during its operation unnecessarily.

* jc/no-git-config-in-clone:
clone: do not export and unexport GIT_CONFIG

Merge branch 'nd/fetch-depth-is-broken'Junio C Hamano Fri, 1 Feb 2013 20:39:24 +0000 (12:39 -0800)

Merge branch 'nd/fetch-depth-is-broken'

"git fetch --depth" was broken in at least three ways. The
resulting history was deeper than specified by one commit, it was
unclear how to wipe the shallowness of the repository with the
command, and documentation was misleading.

* nd/fetch-depth-is-broken:
fetch: elaborate --depth action
upload-pack: fix off-by-one depth calculation in shallow clone
fetch: add --unshallow for turning shallow repo into complete one

Documentation/Makefile: clean up MAN*_TXT listsJeff King Fri, 1 Feb 2013 19:41:14 +0000 (14:41 -0500)

Documentation/Makefile: clean up MAN*_TXT lists

We keep a list of the various files that end up as man1,
man5, etc. Let's break these single-line lists into sorted
multi-line lists, which makes diffs that touch them much
easier to read.

Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

apply: diagnose incomplete submodule object name betterJunio C Hamano Fri, 1 Feb 2013 03:33:27 +0000 (19:33 -0800)

apply: diagnose incomplete submodule object name better

"git am -3" uses this function to build a tree that records how the
preimage the patch was created from would have looked like. An
abbreviated object name on the index line is ordinarily sufficient
for us to figure out the object name the preimage tree would have
contained, but a change to a submodule by definition shows an object
name of a submodule commit which our repository should not have, and
get_sha1_blob() is not an appropriate way to read it (or get_sha1()
for that matter).

Use get_sha1_hex() and complain if we do not find a full object name
there.

We could read from the payload part of the patch to learn the full
object name of the commit, but the primary user "git rebase" has
been fixed to give us a full object name, so this should suffice
for now.

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

apply: simplify build_fake_ancestor()Junio C Hamano Fri, 1 Feb 2013 03:19:44 +0000 (19:19 -0800)

apply: simplify build_fake_ancestor()

The local variable sha1_ptr in the build_fake_ancestor() function
used to either point at the null_sha1[] (if the ancestor did not
have the path) or at sha1[] (if we read the object name into the
local array), but 7a98869 (apply: get rid of --index-info in favor
of --build-fake-ancestor, 2007-09-17) made the "missing in the
ancestor" case unnecessary, hence sha1_ptr, when used, always points
at the local array.

Get rid of the unneeded variable, and restructure the if/else
cascade a bit to make it easier to read. There should be no
behaviour change.

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