Test 'loosely defined local base branch is reported correctly' in
t2024-checkout-dwim.sh, which was introduced in [1] compares output of
two invocations of "git checkout", invoked with two different branches
named "strict" and "loose". As per description in [1], the test is
validating that output of tracking information for these two branches.
This tracking information is printed to standard output:
Your branch is behind 'main' by 1 commit, and can be fast-forwarded.
(use "git pull" to update your local branch)
The test assumes that the names of the two branches (strict and loose)
are in that output, and pipes the output through sed to replace names of
the branches with "BRANCHNAME". Command "git checkout", however,
outputs the branch name to standard error, not standard output -- see
message "Switched to branch '%s'\n" in function "update_refs_for_switch"
in "builtin/checkout.c". This means that the two invocations of sed do
nothing.
Redirect both the standard output and the standard error of "git
checkout" for these assertions. Ensure that compared files have the
string "BRANCHNAME".
In a series of piped commands, only the return code of the last command
is used. Thus, all other commands will have their return codes masked.
Avoid piping of output of git directly into sed to preserve the exit
status code of "git checkout", while we're here.
[1] 05e73682cd (checkout: report upstream correctly even with loosely
defined branch.*.merge, 2014-10-14)
Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove a test in t3402 that has been redundant ever since 80ff47957b
(rebase: remember strategy and strategy options, 2011-02-06). That
commit added a new test, the first part of which (as noted in the old
commit message) duplicated an existing test.
Also remove a test t3418 that has been redundant since the merge backend
was removed in 68aa495b59 (rebase: implement --merge via the interactive
machinery, 2018-12-11), since it now tests the same code paths as the
preceding test.
Helped-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
To store the strategy options rebase prepends " --" to each one and
writes them to a file. To load them it reads the file and passes the
contents to split_cmdline(). This roughly mimics the behavior of the
scripted rebase but has a couple of limitations, (1) options containing
whitespace are not properly preserved (this is true of the scripted
rebase as well) and (2) options containing '"' or '\' are incorrectly
parsed and may cause the parser to return an error.
Fix these limitations by quoting each option when they are stored so
that they can be parsed correctly. Now that "--preserve-merges" no
longer exist this change also stops prepending "--" to the options when
they are stored as that was an artifact of the scripted rebase.
These changes are backwards compatible so the files written by an older
version of git can still be read. They are also forwards compatible,
the file can still be parsed by recent versions of git as they treat the
"--" prefix as optional.
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When handling "--strategy-option" rebase collects the commands into a
struct string_list, then concatenates them into a string, prepending "--"
to each one before splitting the string and removing the "--" prefix.
This is an artifact of the scripted rebase and the need to support
"rebase --preserve-merges". Now that "--preserve-merges" no-longer
exists we can cleanup the way the argument is handled.
The tests for a bad strategy option are adjusted now that
parse_strategy_opts() is no-longer called when starting a rebase. The
fact that it only errors out when running "git rebase --continue" is a
mixed blessing but the next commit will fix the root cause of the
parsing problem so lets not worry about that here.
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The sequencer stores the merge strategy options in an array of strings
which allocated with ALLOC_GROW(). Using "struct strvec" avoids manually
managing the memory of that array and simplifies the code.
Aside from memory allocation the changes to the sequencer are largely
mechanical, changing xopts_nr to xopts.nr and xopts[i] to xopts.v[i]. A
new option parsing macro OPT_STRVEC() is also added to collect the
strategy options. Hopefully this can be used to simplify the code in
builtin/merge.c in the future.
Note that there is a change of behavior to "git cherry-pick" and "git
revert" as passing “--no-strategy-option” will now clear any previous
strategy options whereas before this change it did nothing.
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The state files for "--strategy" and "--strategy-option" are written and
read twice, once by builtin/rebase.c and then by sequencer.c. This is an
artifact of the scripted rebase and the need to support "rebase
--preserve-merges". Now that "--preserve-merges" no-longer exists we
only need to read and write these files in sequencer.c. This enables us
to remove a call to free() in read_strategy_opts() that was added by
f1f4ebf432 (sequencer.c: fix "opts->strategy" leak in
read_strategy_opts(), 2022-11-08) as this commit fixes the root cause of
that leak.
There is further scope for removing duplication in the reading and
writing of state files between builtin/rebase.c and sequencer.c but that
is left for a follow up series.
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use the same macro in the archive reader code as on the writer side in
archive-tar.c to document the connection.
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When 29f4332e66 (Quit passing 'now' to date code, 2019-09-11) removed
its timeval parameter, approxidate_relative() became equivalent to
approxidate(). Convert its last two call sites and remove the redundant
function.
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The hacks to add version information to the man pages comes from 2007
7ef195ba3e (Documentation: Add version information to man pages,
2007-03-25). In that code we passed three fields to DocBook Stylesheets:
`source`, `version`, and `manual`, however, all the stylesheets do is
join the strings `source` and `version` [1].
Their own documentation explains that in pracice the source is just a
combination of two fields [2]:
In practice, there are many pages that simply have a version number in
the "source" field.
Splitting that information might have seemed more proper in 2007, but it
not achieve anything in practice.
Asciidoctor had support for this information in their manpage backend
since day 1: v1.5.3 (2015), but it didn't include the version. In the
docbook5 backend they did in v1.5.7 (2018), but again: no version.
There is no need for us to demand that that they add support for the
version field when in reality all that is going to happen is that both
fields are going to be joined.
Let's do that ourselves so we can forget about all our hacks for this
and so it works for both asciidoc.py, and docbook5 and manpage backends
of asciidoctor.
[1] https://github.com/docbook/xslt10-stylesheets/blob/master/xsl/common/refentry.xsl#L545
[2] https://docbook.sourceforge.net/release/xsl/current/doc/common/template.get.refentry.source.html
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Emily finally figured out how to set up their alias at DayJob, and would
prefer to use nasamuffin@google.com, partially to reduce confusion
between IRC and list, and partially because they just like the alias a
lot more.
Signed-off-by: Emily Shaffer <nasamuffin@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 1819ad327b (grep: fix multibyte regex handling under macOS,
2022-08-26) we use the system library for all regular expression
matching on macOS, not just for git grep. It supports multi-byte
strings and rejects invalid multi-byte characters.
This broke all built-in userdiff word regexes in UTF-8 locales because
they all include such invalid bytes in expressions that are intended to
match multi-byte characters without explicit support for that from the
regex engine.
"|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" is added to all built-in word
regexes to match a single non-space or multi-byte character. The \xNN
characters are invalid if interpreted as UTF-8 because they have their
high bit set, which indicates they are part of a multi-byte character,
but they are surrounded by single-byte characters.
Replace that expression with "|[^[:space:]]" if the regex engine
supports multi-byte matching, as there is no need to have an explicit
range for multi-byte characters then. Check for that capability at
runtime, because it depends on the locale and thus on environment
variables. Construct the full replacement expression at build time
and just switch it in if necessary to avoid string manipulation and
allocations at runtime.
Additionally the word regex for tex contains the expression
"[a-zA-Z0-9\x80-\xff]+" with a similarly invalid range. The best
replacement with only valid characters that I can come up with is
"([a-zA-Z0-9]|[^\x01-\x7f])+". Unlike the original it matches NUL
characters, though. Assuming that tex files usually don't contain NUL
this should be acceptable.
Reported-by: D. Ben Knoble <ben.knoble@gmail.com>
Reported-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The HTML version of MyFirstContribution [1] does not render the
asterisks (*) meant to be typed in as glob patterns by the user, because
they are being interpreted as bold text delimiters.
[1]: Search for "pattern" in
https://git-scm.com/docs/MyFirstContribution#v2-git-send-email
Signed-off-by: Linus Arver <linusa@google.com>
Acked-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git fetch --all" does not have to download and handle the same
bundleURI over and over, which has been corrected.
* ds/fetch-bundle-uri-with-all:
fetch: download bundles once, even with --all
Test framework fix.
* jk/chainlint-fixes:
tests: skip test_eval_ in internal chain-lint
tests: drop here-doc check from internal chain-linter
tests: diagnose unclosed here-doc in chainlint.pl
tests: replace chainlint subshell with a function
tests: run internal chain-linter under "make test"
Split key function and data structure definitions out of cache.h to
new header files and adjust the users.
* en/header-split-cleanup:
csum-file.h: remove unnecessary inclusion of cache.h
write-or-die.h: move declarations for write-or-die.c functions from cache.h
treewide: remove cache.h inclusion due to setup.h changes
setup.h: move declarations for setup.c functions from cache.h
treewide: remove cache.h inclusion due to environment.h changes
environment.h: move declarations for environment.c functions from cache.h
treewide: remove unnecessary includes of cache.h
wrapper.h: move declarations for wrapper.c functions from cache.h
path.h: move function declarations for path.c functions from cache.h
cache.h: remove expand_user_path()
abspath.h: move absolute path functions from cache.h
environment: move comment_line_char from cache.h
treewide: remove unnecessary cache.h inclusion from several sources
treewide: remove unnecessary inclusion of gettext.h
treewide: be explicit about dependence on gettext.h
treewide: remove unnecessary cache.h inclusion from a few headers
Code clean-up around the use of the_repository.
* ab/remove-implicit-use-of-the-repository:
libs: use "struct repository *" argument, not "the_repository"
post-cocci: adjust comments for recent repo_* migration
cocci: apply the "revision.h" part of "the_repository.pending"
cocci: apply the "rerere.h" part of "the_repository.pending"
cocci: apply the "refs.h" part of "the_repository.pending"
cocci: apply the "promisor-remote.h" part of "the_repository.pending"
cocci: apply the "packfile.h" part of "the_repository.pending"
cocci: apply the "pretty.h" part of "the_repository.pending"
cocci: apply the "object-store.h" part of "the_repository.pending"
cocci: apply the "diff.h" part of "the_repository.pending"
cocci: apply the "commit.h" part of "the_repository.pending"
cocci: apply the "commit-reach.h" part of "the_repository.pending"
cocci: apply the "cache.h" part of "the_repository.pending"
cocci: add missing "the_repository" macros to "pending"
cocci: sort "the_repository" rules by header
cocci: fix incorrect & verbose "the_repository" rules
cocci: remove dead rule from "the_repository.pending.cocci"
Add a few configuration variables to tell the cURL library that
different types of ssl-cert and ssl-key are in use.
* sm/ssl-key-type-config:
http: add support for different sslcert and sslkey types.
Assorted config API updates.
* ab/config-multi-and-nonbool:
for-each-repo: with bad config, don't conflate <path> and <cmd>
config API: add "string" version of *_value_multi(), fix segfaults
config API users: test for *_get_value_multi() segfaults
for-each-repo: error on bad --config
config API: have *_multi() return an "int" and take a "dest"
versioncmp.c: refactor config reading next commit
config API: add and use a "git_config_get()" family of functions
config tests: add "NULL" tests for *_get_value_multi()
config tests: cover blind spots in git_die_config() tests
Clean-up of the code path that reports what "git fetch" did to each
ref.
* ps/fetch-ref-update-reporting:
fetch: centralize printing of reference updates
fetch: centralize logic to print remote URL
fetch: centralize handling of per-reference format
fetch: pass the full local reference name to `format_display`
fetch: move output format into `display_state`
fetch: move reference width calculation into `display_state`
Code clean-up for "-Wunused-parameter" build.
* jk/unused-post-2.40-part2:
parse-options: drop parse_opt_unknown_cb()
t/helper: mark unused argv/argc arguments
mark "argv" as unused when we check argc
builtins: mark unused prefix parameters
builtins: annotate always-empty prefix parameters
builtins: always pass prefix to parse_options()
fast-import: fix file access when run from subdir
More "-Wunused-parameters" code clean-up.
* jk/unused-post-2.40:
transport: mark unused parameters in fetch_refs_from_bundle()
http: mark unused parameter in fill_active_slot() callbacks
http: drop unused parameter from start_object_request()
mailmap: drop debugging code
"git for-each-ref" learns '%(ahead-behind:<base>)' that computes the
distances from a single reference point in the history with bunch
of commits in bulk.
* ds/ahead-behind:
commit-reach: add tips_reachable_from_bases()
for-each-ref: add ahead-behind format atom
commit-reach: implement ahead_behind() logic
commit-graph: introduce `ensure_generations_valid()`
commit-graph: return generation from memory
commit-graph: simplify compute_generation_numbers()
commit-graph: refactor compute_topological_levels()
for-each-ref: explicitly test no matches
for-each-ref: add --stdin option
New git users may want to locally delete remote-tracking branches but
don't really understand how they are distinguished from branches by git.
Then one may naively try:
`git branch -d foo/bar` and get a correct error `branch foo/bar not
found` but hard to understand for a newbie, this patch aims to guide one
in such case.
when failing to delete a branch with `git branch -d <branch>` because
of branch not found, try to find a **remote refs** matching `<branch>`
and if so, add an hint:
`Did you forget --remote?` to the error message
Signed-off-by: Clement Mabileau <mabileau.clement@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As discussed in t/README, tests should aim to use PERL_PATH rather than
straight "perl". We usually do this automatically with a "perl" function
in test-lib.sh, but a few cases need to be handled specially.
One such case is the apply-one-time-perl.sh CGI, which invokes plain
"perl". It should be using $PERL_PATH, but to make that work, we must
also instruct Apache to pass through the variable.
Prior to this patch, doing:
mv /usr/bin/perl /usr/bin/my-perl
make PERL_PATH=/usr/bin/my-perl test
would fail t5702, t5703, and t5616. After this it passes. This is a
pretty extreme case, as even if you install perl elsewhere, you'd likely
still have it in your $PATH. A more realistic case is that you don't
want to use the perl in your $PATH (because it's older, broken, etc) and
expect PERL_PATH to consistently override that (since that's what it's
documented to do). Removing it completely is just a convenient way of
completely breaking it for testing purposes.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 2007 we added a custom header macro to provide version information
7ef195ba3e (Documentation: Add version information to man pages,
2007-03-25),
However, in 2008 asciidoc added the attributes to do this properly [1].
This was not implemented in Git until 2019: 226daba280 (Doc/Makefile:
give mansource/-version/-manual attributes, 2019-09-16).
But in 2023 we are doing it properly, so there's no need for the custom
macro.
[1] https://github.com/asciidoc-py/asciidoc-py/commit/ad78a3c
Cc: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When no merge.tool or diff.tool is configured or manually selected, the
selection of a default tool is sensitive to the DISPLAY variable; in a
GUI session a gui-specific tool will be proposed if found, and
otherwise a terminal-based one. This "GUI-optimizing" behavior is
important because a GUI can make a huge difference to a user's ability
to understand and correctly complete a non-trivial conflicting merge.
Some time ago the merge.guitool and diff.guitool config options were
introduced to enable users to configure both a GUI tool, and a non-GUI
tool (with fallback if no GUI tool configured), in the same environment.
Unfortunately, the --gui argument introduced to support the selection of
the guitool is still explicit. When using configured tools, there is no
equivalent of the no-tool-configured "propose a GUI tool if we are in a GUI
environment" behavior.
As proposed in <xmqqmtb8jsej.fsf@gitster.g>, introduce new configuration
options, difftool.guiDefault and mergetool.guiDefault, supporting a special
value "auto" which causes the corresponding tool or guitool to be selected
depending on the presence of a non-empty DISPLAY value. Also support "true"
to say "default to the guitool (unless --no-gui is passed on the
commandline)", and "false" as the previous default behavior when these new
configuration options are not specified.
Signed-off-by: Tao Klerks <tao@klerks.biz>
Acked-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Without the word "the", the sentence is a little harder to read. The
word "the" makes it clearer that the comment refers to discrete patches,
and not portions of individual patches.
Signed-off-by: Daniel Watson <ozzloy@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 50d9bbba92 (Documentation: Avoid use of xmlto --stringparam,
2009-12-04) introduced manpage-base-url.xsl because ancient versions of
xmlto did not have --stringparam.
However, that was more than ten years ago, no need for that complexity
anymore, we can just use --stringparam.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A user could prepare an empty repository and set it to use SHA256 as
the object format. The new repository created by "git clone" from
such a repository however would not record that it is expecting
objects in the same SHA256 format. This works as expected if the
source repository is not empty.
Just like we started copying the name of the primary branch from the
remote repository even if it is unborn in 3d8314f8 (clone: propagate
empty remote HEAD even with other branches, 2022-07-07), lift the
code that records the object format out of the block executed only
when cloning from an instantiated repository, so that it works also
when cloning from an empty repository.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git pack-redundant" gave a warning when run, as the command has
outlived its usefulness long ago and is nominated for future
removal. Now we escalate to give an error.
* jk/really-deprecate-pack-redundant:
pack-redundant: escalate deprecation warning to an error
Document what the pathname-looking strings in "rev-list --object"
output are for and what they mean.
* jk/document-rev-list-object-name:
docs: document caveats of rev-list's object-name output
"git blame --contents=<file> <rev> -- <path>" used to be forbidden,
but now it finds the origins of lines starting at <file> contents
through the history that leads to <rev>.
* jk/blame-contents-with-arbitrary-commit:
blame: allow --contents to work with non-HEAD commit
Streamline --rebase-merges command line option handling and
introduce rebase.merges configuration variable.
* ah/rebase-merges-config:
rebase: add a config option for --rebase-merges
rebase: deprecate --rebase-merges=""
rebase: add documentation and test for --no-rebase-merges
Code clean-up.
* jk/fast-export-cleanup:
fast-export: drop unused parameter from anonymize_commit_message()
fast-export: drop data parameter from anonymous generators
fast-export: de-obfuscate --anonymize-map handling
fast-export: factor out anonymized_entry creation
fast-export: simplify initialization of anonymized hashmaps
fast-export: drop const when storing anonymized values
The index files can become corrupt under certain conditions when
the split-index feature is in use, especially together with
fsmonitor, which have been corrected.
* js/split-index-fixes:
unpack-trees: take care to propagate the split-index flag
fsmonitor: avoid overriding `cache_changed` bits
split-index; stop abusing the `base_oid` to strip the "link" extension
split-index & fsmonitor: demonstrate a bug
The wildmatch library code unlearns exponential behaviour it
acquired some time ago since it was borrowed from rsync.
* pw/wildmatch-fixes:
t3070: make chain lint tester happy
wildmatch: hide internal return values
wildmatch: avoid undefined behavior
wildmatch: fix exponential behavior
Update 'git write-tree' to allow using the sparse-index in memory
without expanding to a full one.
The recursive algorithm for update_one() was already updated in 2de37c5
(cache-tree: integrate with sparse directory entries, 2021-03-03) to
handle sparse directory entries in the index. Hence we can just set the
requires-full-index to false for "write-tree".
The `p2000` tests demonstrate a ~96% execution time reduction for 'git
write-tree' using a sparse index:
Test before after
-----------------------------------------------------------------
2000.78: git write-tree (full-v3) 0.34 0.33 -2.9%
2000.79: git write-tree (full-v4) 0.32 0.30 -6.3%
2000.80: git write-tree (sparse-v3) 0.47 0.02 -95.8%
2000.81: git write-tree (sparse-v4) 0.45 0.02 -95.6%
Signed-off-by: Shuqi Liang <cheskaqiqi@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ab/remove-implicit-use-of-the-repository:
libs: use "struct repository *" argument, not "the_repository"
post-cocci: adjust comments for recent repo_* migration
cocci: apply the "revision.h" part of "the_repository.pending"
cocci: apply the "rerere.h" part of "the_repository.pending"
cocci: apply the "refs.h" part of "the_repository.pending"
cocci: apply the "promisor-remote.h" part of "the_repository.pending"
cocci: apply the "packfile.h" part of "the_repository.pending"
cocci: apply the "pretty.h" part of "the_repository.pending"
cocci: apply the "object-store.h" part of "the_repository.pending"
cocci: apply the "diff.h" part of "the_repository.pending"
cocci: apply the "commit.h" part of "the_repository.pending"
cocci: apply the "commit-reach.h" part of "the_repository.pending"
cocci: apply the "cache.h" part of "the_repository.pending"
cocci: add missing "the_repository" macros to "pending"
cocci: sort "the_repository" rules by header
cocci: fix incorrect & verbose "the_repository" rules
cocci: remove dead rule from "the_repository.pending.cocci"
git describe compares the index with the working tree when (and only
when) it is run with the "--dirty" flag. This is done by the
run_diff_index() function. The function has been made aware of the
sparse-index in the series that led to 8d2c3732 (Merge branch
'ld/sparse-diff-blame', 2021-12-21). Hence we can just set the
requires-full-index to false for "describe".
Performance metrics
Test HEAD~1 HEAD
-------------------------------------------------------------------------------------------------
2000.2: git describe --dirty (full-v3) 0.08(0.09+0.01) 0.08(0.06+0.03) +0.0%
2000.3: git describe --dirty (full-v4) 0.09(0.07+0.03) 0.08(0.05+0.04) -11.1%
2000.4: git describe --dirty (sparse-v3) 0.88(0.82+0.06) 0.02(0.01+0.05) -97.7%
2000.5: git describe --dirty (sparse-v4) 0.68(0.60+0.08) 0.02(0.02+0.04) -97.1%
2000.6: echo >>new && git describe --dirty (full-v3) 0.08(0.04+0.05) 0.08(0.05+0.04) +0.0%
2000.7: echo >>new && git describe --dirty (full-v4) 0.08(0.07+0.03) 0.08(0.05+0.04) +0.0%
2000.8: echo >>new && git describe --dirty (sparse-v3) 0.75(0.69+0.07) 0.02(0.03+0.03) -97.3%
2000.9: echo >>new && git describe --dirty (sparse-v4) 0.81(0.73+0.09) 0.02(0.01+0.05) -97.5%
Signed-off-by: Raghul Nanth A <nanth.raghul@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>