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2010-09-08Merge branch 'kf/askpass-config'Libravatar Junio C Hamano1-0/+1
* kf/askpass-config: Extend documentation of core.askpass and GIT_ASKPASS. Allow core.askpass to override SSH_ASKPASS. Add a new option 'core.askpass'.
2010-09-08Merge branch 'jk/maint-pass-c-config-in-env'Libravatar Junio C Hamano1-0/+1
* jk/maint-pass-c-config-in-env: do not pass "git -c foo=bar" params to transport helpers pass "git -c foo=bar" params through environment
2010-08-31Add a new option 'core.askpass'.Libravatar Anselm Kruis1-0/+1
Setting this option has the same effect as setting the environment variable 'GIT_ASKPASS'. Signed-off-by: Knut Franke <k.franke@science-computing.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-24do not pass "git -c foo=bar" params to transport helpersLibravatar Jonathan Nieder1-0/+1
Like $GIT_CONFIG, $GIT_CONFIG_PARAMETERS needs to be suppressed by "git push" and its cousins when running local transport helpers to imitate remote transport well. Noticed-by: Jeff King <peff@peff.net> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-11git wrapper: introduce startup_info structLibravatar Nguyễn Thái Ngọc Duy1-0/+1
The startup_info struct will collect information managed by the git setup code, such as the prefix for relative paths passed on the command line (i.e., path to the starting cwd from the toplevel of the work tree) and whether a git repository has been found. In other words, startup_info is intended to be a collection of global variables with results that were previously returned from setup functions. This state is global anyway (since the cwd is), even if it is not currently tracked that way. Letting these values persist means there is more flexibility in deciding when to run setup. For now, the struct is empty. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-21Merge branch 'eb/core-eol'Libravatar Junio C Hamano1-1/+2
* eb/core-eol: Add "core.eol" config variable Rename the "crlf" attribute "text" Add per-repository eol normalization Add tests for per-repository eol normalization Conflicts: Documentation/config.txt Makefile
2010-06-06Add "core.eol" config variableLibravatar Eyvind Bernhardsen1-0/+1
Introduce a new configuration variable, "core.eol", that allows the user to set which line endings to use for end-of-line-normalized files in the working directory. It defaults to "native", which means CRLF on Windows and LF everywhere else. Note that "core.autocrlf" overrides core.eol. This means that [core] autocrlf = true puts CRLFs in the working directory even if core.eol is set to "lf". Signed-off-by: Eyvind Bernhardsen <eyvind.bernhardsen@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-19Add per-repository eol normalizationLibravatar Eyvind Bernhardsen1-1/+1
Change the semantics of the "crlf" attribute so that it enables end-of-line normalization when it is set, regardless of "core.autocrlf". Add a new setting for "crlf": "auto", which enables end-of-line conversion but does not override the automatic text file detection. Add a new attribute "eol" with possible values "crlf" and "lf". When set, this attribute enables normalization and forces git to use CRLF or LF line endings in the working directory, respectively. The line ending style to be used for normalized text files in the working directory is set using "core.autocrlf". When it is set to "true", CRLFs are used in the working directory; when set to "input" or "false", LFs are used. Signed-off-by: Eyvind Bernhardsen <eyvind.bernhardsen@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-24Refactor list of of repo-local env varsLibravatar Giuseppe Bilotta1-0/+17
Move the list of GIT_* environment variables that are local to a repository into a static list in environment.c, as it is also useful elsewhere. Also add the missing GIT_CONFIG variable to the list. Make it easy to use the list both by NULL-termination and by size; the latter (excluding the terminating NULL) is stored in the local_repo_env_size define. Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-13Merge branch 'nd/sparse'Libravatar Junio C Hamano1-0/+1
* nd/sparse: (25 commits) t7002: test for not using external grep on skip-worktree paths t7002: set test prerequisite "external-grep" if supported grep: do not do external grep on skip-worktree entries commit: correctly respect skip-worktree bit ie_match_stat(): do not ignore skip-worktree bit with CE_MATCH_IGNORE_VALID tests: rename duplicate t1009 sparse checkout: inhibit empty worktree Add tests for sparse checkout read-tree: add --no-sparse-checkout to disable sparse checkout support unpack-trees(): ignore worktree check outside checkout area unpack_trees(): apply $GIT_DIR/info/sparse-checkout to the final index unpack-trees(): "enable" sparse checkout and load $GIT_DIR/info/sparse-checkout unpack-trees.c: generalize verify_* functions unpack-trees(): add CE_WT_REMOVE to remove on worktree alone Introduce "sparse checkout" dir.c: export excluded_1() and add_excludes_from_file_1() excluded_1(): support exclude files in index unpack-trees(): carry skip-worktree bit over in merged_entry() Read .gitignore from index if it is skip-worktree Avoid writing to buffer in add_excludes_from_file_1() ... Conflicts: .gitignore Documentation/config.txt Documentation/git-update-index.txt Makefile entry.c t/t7002-grep.sh
2009-11-23Merge branch 'cc/replace'Libravatar Junio C Hamano1-0/+2
* cc/replace: Documentation: talk a little bit about GIT_NO_REPLACE_OBJECTS Documentation: fix typos and spelling in replace documentation replace: use a GIT_NO_REPLACE_OBJECTS env variable
2009-11-20replace: use a GIT_NO_REPLACE_OBJECTS env variableLibravatar Christian Couder1-0/+2
This has the same effect as --no-replace-objects option; git ignores the replace refs. When --no-replace-objects option is passed to git, this environment variable is set to "1" and exported to subprocesses in order to propagate the same setting. It is useful for example for scripts, as the git commands used in them can now be aware that they must not read replace refs. Tested-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-19Introduce commit notesLibravatar Johannes Schindelin1-0/+1
Commit notes are blobs which are shown together with the commit message. These blobs are taken from the notes ref, which you can configure by the config variable core.notesRef, which in turn can be overridden by the environment variable GIT_NOTES_REF. The notes ref is a branch which contains "files" whose names are the names of the corresponding commits (i.e. the SHA-1). The rationale for putting this information into a ref is this: we want to be able to fetch and possibly union-merge the notes, maybe even look at the date when a note was introduced, and we want to store them efficiently together with the other objects. This patch has been improved by the following contributions: - Thomas Rast: fix core.notesRef documentation - Tor Arne Vestbø: fix printing of multi-line notes - Alex Riesen: Using char array instead of char pointer costs less BSS - Johan Herland: Plug leak when msg is good, but msglen or type causes return Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Tor Arne Vestbø <tavestbo@trolltech.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> get_commit_notes(): Plug memory leak when 'if' triggers, but not because of read_sha1_file() failure
2009-08-23unpack-trees(): "enable" sparse checkout and load $GIT_DIR/info/sparse-checkoutLibravatar Nguyễn Thái Ngọc Duy1-0/+1
This patch introduces core.sparseCheckout, which will control whether sparse checkout support is enabled in unpack_trees() It also loads sparse-checkout file that will be used in the next patch. I split it out so the next patch will be shorter, easier to read. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-21Merge branch 'cc/replace'Libravatar Junio C Hamano1-0/+1
* cc/replace: t6050: check pushing something based on a replaced commit Documentation: add documentation for "git replace" Add git-replace to .gitignore builtin-replace: use "usage_msg_opt" to give better error messages parse-options: add new function "usage_msg_opt" builtin-replace: teach "git replace" to actually replace Add new "git replace" command environment: add global variable to disable replacement mktag: call "check_sha1_signature" with the replacement sha1 replace_object: add a test case object: call "check_sha1_signature" with the replacement sha1 sha1_file: add a "read_sha1_file_repl" function replace_object: add mechanism to replace objects found in "refs/replace/" refs: add a "for_each_replace_ref" function
2009-08-05git apply: option to ignore whitespace differencesLibravatar Giuseppe Bilotta1-0/+1
Introduce --ignore-whitespace option and corresponding config bool to ignore whitespace differences while applying patches, akin to the 'patch' program. 'git am', 'git rebase' and the bash git completion are made aware of this option. Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-25Merge branch 'js/maint-graft-unhide-true-parents'Libravatar Junio C Hamano1-0/+1
* js/maint-graft-unhide-true-parents: git repack: keep commits hidden by a graft Add a test showing that 'git repack' throws away grafted-away parents Conflicts: git-repack.sh
2009-07-24git repack: keep commits hidden by a graftLibravatar Johannes Schindelin1-0/+1
When you have grafts that pretend that a given commit has different parents than the ones recorded in the commit object, it is dangerous to let 'git repack' remove those hidden parents, as you can easily remove the graft and end up with a broken repository. So let's play it safe and keep those parent objects and everything that is reachable by them, in addition to the grafted parents. As this behavior can only be triggered by git pack-objects, and as that command handles duplicate parents gracefully, we do not bother to cull duplicated parents that may result by using both true and grafted parents. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-18push: do not give big warning when no preference is configuredLibravatar Junio C Hamano1-1/+1
If the message said "we will be changing the default in the future, so this is to warn people who want to keep the current default what to do", it would have made some sense, but as it stands, the message is merely an unsolicited advertisement for a new feature, which it is not helpful at all. Squelch it. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31environment: add global variable to disable replacementLibravatar Christian Couder1-0/+1
This new "read_replace_refs" global variable is set to 1 by default, so that replace refs are used by default. But reachability traversal and packing commands ("cmd_fsck", "cmd_prune", "cmd_pack_objects", "upload_pack", "cmd_unpack_objects") set it to 0, as they must work with the original DAG. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-29Rename core.unreliableHardlinks to core.createObjectLibravatar Johannes Schindelin1-3/+3
"Unreliable hardlinks" is a misleading description for what is happening. So rename it to something less misleading. Suggested by Linus Torvalds. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-25Add an option not to use link(src, dest) && unlink(src) when that is unreliableLibravatar Johannes Schindelin1-0/+4
It seems that accessing NTFS partitions with ufsd (at least on my EeePC) has an unnerving bug: if you link() a file and unlink() it right away, the target of the link() will have the correct size, but consist of NULs. It seems as if the calls are simply not serialized correctly, as single-stepping through the function move_temp_to_file() works flawlessly. As ufsd is "Commertial software" (sic!), I cannot fix it, and have to work around it in Git. At the same time, it seems that this fixes msysGit issues 222 and 229 to assume that Windows cannot handle link() && unlink(). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-17New config push.default to decide default behavior for pushLibravatar Finn Arne Gangstad1-0/+1
When "git push" is not told what refspecs to push, it pushes all matching branches to the current remote. For some workflows this default is not useful, and surprises new users. Some have even found that this default behaviour is too easy to trigger by accident with unwanted consequences. Introduce a new configuration variable "push.default" that decides what action git push should take if no refspecs are given or implied by the command line arguments or the current remote configuration. Possible values are: 'nothing' : Push nothing; 'matching' : Current default behaviour, push all branches that already exist in the current remote; 'tracking' : Push the current branch to whatever it is tracking; 'current' : Push the current branch to a branch of the same name, i.e. HEAD. Signed-off-by: Finn Arne Gangstad <finnag@pvv.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-10Revert "Merge branch 'js/notes'"Libravatar Junio C Hamano1-1/+0
This reverts commit 7b75b331f6744fbf953fe8913703378ef86a2189, reversing changes made to 5d680a67d7909c89af96eba4a2d77abed606292b.
2008-12-21Introduce commit notesLibravatar Johannes Schindelin1-0/+1
Commit notes are blobs which are shown together with the commit message. These blobs are taken from the notes ref, which you can configure by the config variable core.notesRef, which in turn can be overridden by the environment variable GIT_NOTES_REF. The notes ref is a branch which contains "files" whose names are the names of the corresponding commits (i.e. the SHA-1). The rationale for putting this information into a ref is this: we want to be able to fetch and possibly union-merge the notes, maybe even look at the date when a note was introduced, and we want to store them efficiently together with the other objects. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-14Add cache preload facilityLibravatar Linus Torvalds1-0/+3
This can do the lstat() storm in parallel, giving potentially much improved performance for cold-cache cases or things like NFS that have weak metadata caching. Just use "read_cache_preload()" instead of "read_cache()" to force an optimistic preload of the index stat data. The function takes a pathspec as its argument, allowing us to preload only the relevant portion of the index. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-11Merge branch 'maint'Libravatar Junio C Hamano1-1/+1
* maint: Fix non-literal format in printf-style calls git-submodule: Avoid printing a spurious message. git ls-remote: make usage string match manpage Makefile: help people who run 'make check' by mistake
2008-11-11Fix non-literal format in printf-style callsLibravatar Daniel Lowe1-1/+1
These were found using gcc 4.3.2-1ubuntu11 with the warning: warning: format not a string literal and no format arguments Incorporated suggestions from Brandon Casey <casey@nrlssc.navy.mil>. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-30Merge branch 'ar/maint-mksnpath' into ar/mksnpathLibravatar Junio C Hamano1-1/+1
* ar/maint-mksnpath: Use git_pathdup instead of xstrdup(git_path(...)) git_pathdup: returns xstrdup-ed copy of the formatted path Fix potentially dangerous use of git_path in ref.c Add git_snpath: a .git path formatting routine with output buffer Conflicts: builtin-revert.c refs.c rerere.c
2008-10-30Use git_pathdup instead of xstrdup(git_path(...))Libravatar Alex Riesen1-1/+1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-30add have_git_dir() functionLibravatar Dmitry Potapov1-0/+5
This function is used to learn whether git_dir is already set up or not. It is necessary, because we want to read configuration in compat/cygwin.c Signed-off-by: Dmitry Potapov <dpotapov@gmail.com> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-07-28Make use of stat.ctime configurableLibravatar Alex Riesen1-0/+1
A new configuration variable 'core.trustctime' is introduced to allow ignoring st_ctime information when checking if paths in the working tree has changed, because there are situations where it produces too much false positives. Like when file system crawlers keep changing it when scanning and using the ctime for marking scanned files. The default is to notice ctime changes. Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-27shrink git-shell by avoiding redundant dependenciesLibravatar Dmitry Potapov1-1/+0
A lot of modules that have nothing to do with git-shell functionality were linked in, bloating git-shell more than 8 times. This patch cuts off redundant dependencies by: 1. providing stubs for three functions that make no sense for git-shell; 2. moving quote_path_fully from environment.c to quote.c to make the later self sufficient; 3. moving make_absolute_path into a new separate file. The following numbers have been received with the default optimization settings on master using GCC 4.1.2: Before: text data bss dec hex filename 143915 1348 93168 238431 3a35f git-shell After: text data bss dec hex filename 17670 788 8232 26690 6842 git-shell Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-25Merge branch 'lt/config-fsync'Libravatar Junio C Hamano1-0/+1
* lt/config-fsync: Add config option to enable 'fsync()' of object files Split up default "i18n" and "branch" config parsing into helper routines Split up default "user" config parsing into helper routine Split up default "core" config parsing into helper routine
2008-06-19environment.c: remove unused functionLibravatar しらいしななこ1-7/+0
get_refs_directory() is not used anywhere. Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-18Add config option to enable 'fsync()' of object filesLibravatar Linus Torvalds1-0/+1
As explained in the documentation[*] this is totally useless on filesystems that do ordered/journalled data writes, but it can be a useful safety feature on filesystems like HFS+ that only journal the metadata, not the actual file contents. It defaults to off, although we could presumably in theory some day auto-enable it on a per-filesystem basis. [*] Yes, I updated the docs for the thing. Hell really _has_ frozen over, and the four horsemen are probably just beyond the horizon. EVERYBODY PANIC! Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-25Merge branch 'db/clone-in-c'Libravatar Junio C Hamano1-4/+20
* db/clone-in-c: Add test for cloning with "--reference" repo being a subset of source repo Add a test for another combination of --reference Test that --reference actually suppresses fetching referenced objects clone: fall back to copying if hardlinking fails builtin-clone.c: Need to closedir() in copy_or_link_directory() builtin-clone: fix initial checkout Build in clone Provide API access to init_db() Add a function to set a non-default work tree Allow for having for_each_ref() list extra refs Have a constant extern refspec for "--tags" Add a library function to add an alternate to the alternates file Add a lockfile function to append to a file Mark the list of refs to fetch as const Conflicts: cache.h t/t5700-clone-reference.sh
2008-05-14Merge branch 'sb/committer'Libravatar Junio C Hamano1-0/+1
* sb/committer: commit: Show committer if automatic commit: Show author if different from committer Preparation to call determine_author_info from prepare_to_commit
2008-05-11Merge branch 'lt/core-optim'Libravatar Junio C Hamano1-0/+1
* lt/core-optim: Optimize symlink/directory detection Avoid some unnecessary lstat() calls is_racy_timestamp(): do not check timestamp for gitlinks diff-lib.c: rename check_work_tree_entity() diff: a submodule not checked out is not modified Add t7506 to test submodule related functions for git-status t4027: test diff for submodule with empty directory Make git-add behave more sensibly in a case-insensitive environment When adding files to the index, add support for case-independent matches Make unpack-tree update removed files before any updated files Make branch merging aware of underlying case-insensitive filsystems Add 'core.ignorecase' option Make hash_name_lookup able to do case-independent lookups Make "index_name_exists()" return the cache_entry it found Move name hashing functions into a file of its own Make unpack_trees_options bit flags actual bitfields
2008-05-11Allow tracking branches to set up rebase by default.Libravatar Dustin Sallings1-0/+1
Change cd67e4d4 introduced a new configuration parameter that told pull to automatically perform a rebase instead of a merge. This change provides a configuration option to enable this feature automatically when creating a new branch. If the variable branch.autosetuprebase applies for a branch that's being created, that branch will have branch.<name>.rebase set to true. Signed-off-by: Dustin Sallings <dustin@spy.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-10Merge branch 'lt/case-insensitive'Libravatar Junio C Hamano1-0/+1
* lt/case-insensitive: Make git-add behave more sensibly in a case-insensitive environment When adding files to the index, add support for case-independent matches Make unpack-tree update removed files before any updated files Make branch merging aware of underlying case-insensitive filsystems Add 'core.ignorecase' option Make hash_name_lookup able to do case-independent lookups Make "index_name_exists()" return the cache_entry it found Move name hashing functions into a file of its own Make unpack_trees_options bit flags actual bitfields
2008-05-06commit: Show committer if automaticLibravatar Santi Béjar1-0/+1
To warn the user in case he/she might be using an unintended committer identity. Signed-off-by: Santi Béjar <sbejar@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-04Add a function to set a non-default work treeLibravatar Daniel Barkalow1-4/+20
This function may only be used before the work tree is used. Signed-off-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-09Add platform-independent .git "symlink"Libravatar Lars Hjemli1-0/+2
This patch allows .git to be a regular textfile containing the path of the real git directory (prefixed with "gitdir: "), which can be useful on platforms lacking support for real symlinks. Signed-off-by: Lars Hjemli <hjemli@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-09Add 'core.ignorecase' optionLibravatar Linus Torvalds1-0/+1
..and start using it for directory entry traversal (ie "git status" will not consider entries that match an existing entry case-insensitively to be a new file) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-27Merge branch 'js/branch-track'Libravatar Junio C Hamano1-0/+1
* js/branch-track: doc: documentation update for the branch track changes branch: optionally setup branch.*.merge from upstream local branches Conflicts: Documentation/config.txt Documentation/git-branch.txt Documentation/git-checkout.txt builtin-branch.c cache.h t/t7201-co.sh
2008-02-19branch: optionally setup branch.*.merge from upstream local branchesLibravatar Jay Soffian1-0/+1
"git branch" and "git checkout -b" now honor --track option even when the upstream branch is local. Previously --track was silently ignored when forking from a local branch. Also the command did not error out when --track was explicitly asked for but the forked point specified was not an existing branch (i.e. when there is no way to set up the tracking configuration), but now it correctly does. The configuration setting branch.autosetupmerge can now be set to "always", which is equivalent to using --track from the command line. Setting branch.autosetupmerge to "true" will retain the former behavior of only setting up branch.*.merge for remote upstream branches. Includes test cases for the new functionality. Signed-off-by: Jay Soffian <jaysoffian@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-16Merge branch 'sp/safecrlf'Libravatar Junio C Hamano1-0/+1
* sp/safecrlf: safecrlf: Add mechanism to warn about irreversible crlf conversions
2008-02-15Add "const" qualifier to "char *excludes_file".Libravatar Christian Couder1-1/+1
Also use "git_config_string" to simplify "config.c" code where "excludes_file" is set. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-15Add "const" qualifier to "char *editor_program".Libravatar Christian Couder1-1/+1
Also use "git_config_string" to simplify "config.c" code where "editor_program" is set. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>