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2014-09-29Merge branch 'ta/config-add-to-empty-or-true-fix' into maintLibravatar Junio C Hamano1-6/+17
"git config --add section.var val" used to lose existing section.var whose value was an empty string. * ta/config-add-to-empty-or-true-fix: config: avoid a funny sentinel value "a^" make config --add behave correctly for empty and NULL values
2014-09-19Merge branch 'jk/command-line-config-empty-string' into maintLibravatar Junio C Hamano1-2/+10
* jk/command-line-config-empty-string: config: teach "git -c" to recognize an empty string Conflicts: config.c
2014-09-11config: avoid a funny sentinel value "a^"Libravatar Jeff King1-6/+17
Introduce CONFIG_REGEX_NONE as a more explicit sentinel value to say "we do not want to replace any existing entry" and use it in the implementation of "git config --add". Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-08-18make config --add behave correctly for empty and NULL valuesLibravatar Tanay Abhra1-1/+1
Currently if we have a config file like, [foo] baz bar = and we try something like, "git config --add foo.baz roll", Git will segfault. Moreover, for "git config --add foo.bar roll", it will overwrite the original value instead of appending after the existing empty value. The problem lies with the regexp used for simulating --add in `git_config_set_multivar_in_file()`, "^$", which in ideal case should not match with any string but is true for empty strings. Instead use a regexp like "a^" which can not be true for any string, empty or not. For removing the segfault add a check for NULL values in `matches()` in config.c. Signed-off-by: Tanay Abhra <tanayabh@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-08-05config: teach "git -c" to recognize an empty stringLibravatar Junio C Hamano1-2/+10
In a config file, you can do: [foo] bar to turn the "foo.bar" boolean flag on, and you can do: [foo] bar= to set "foo.bar" to the empty string. However, git's "-c" parameter treats both: git -c foo.bar and git -c foo.bar= as the boolean flag, and there is no way to set a variable to the empty string. This patch enables the latter form to do that. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-07-28Merge branch 'jk/misc-fixes-maint'Libravatar Junio C Hamano1-7/+5
* jk/misc-fixes-maint: apply: avoid possible bogus pointer fix memory leak parsing core.commentchar transport: fix leaks in refs_from_alternate_cb free ref string returned by dwim_ref receive-pack: don't copy "dir" parameter
2014-07-24fix memory leak parsing core.commentcharLibravatar Jeff King1-5/+5
When we see the core.commentchar config option, we extract the string with git_config_string, which does two things: 1. It complains via config_error_nonbool if there is no string value. 2. It makes a copy of the string. Since we immediately parse the string into its single-character value, we only care about (1). And in fact (2) is a detriment, as it means we leak the copy. Instead, let's just check the pointer value ourselves, and parse directly from the const string we already have. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-07-22Merge branch 'bg/xcalloc-nmemb-then-size' into maintLibravatar Junio C Hamano1-2/+2
* bg/xcalloc-nmemb-then-size: transport-helper.c: rearrange xcalloc arguments remote.c: rearrange xcalloc arguments reflog-walk.c: rearrange xcalloc arguments pack-revindex.c: rearrange xcalloc arguments notes.c: rearrange xcalloc arguments imap-send.c: rearrange xcalloc arguments http-push.c: rearrange xcalloc arguments diff.c: rearrange xcalloc arguments config.c: rearrange xcalloc arguments commit.c: rearrange xcalloc arguments builtin/remote.c: rearrange xcalloc arguments builtin/ls-remote.c: rearrange xcalloc arguments
2014-07-21Merge branch 'kb/avoid-fchmod-for-now'Libravatar Junio C Hamano1-4/+4
Replaces the only two uses of fchmod() with chmod() because the former does not work on Windows port and because luckily we can. * kb/avoid-fchmod-for-now: config: use chmod() instead of fchmod()
2014-07-16config: use chmod() instead of fchmod()Libravatar Karsten Blees1-4/+4
There is no fchmod() on native Windows platforms (MinGW and MSVC), and the equivalent Win32 API (SetFileInformationByHandle) requires Windows Vista. Use chmod() instead. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-25Merge branch 'ow/config-mailmap-pathname' into maintLibravatar Junio C Hamano1-1/+1
The "mailmap.file" configuration option did not support the tilde expansion (i.e. ~user/path and ~/path). * ow/config-mailmap-pathname: config: respect '~' and '~user' in mailmap.file
2014-06-20refactor skip_prefix to return a booleanLibravatar Jeff King1-2/+1
The skip_prefix() function returns a pointer to the content past the prefix, or NULL if the prefix was not found. While this is nice and simple, in practice it makes it hard to use for two reasons: 1. When you want to conditionally skip or keep the string as-is, you have to introduce a temporary variable. For example: tmp = skip_prefix(buf, "foo"); if (tmp) buf = tmp; 2. It is verbose to check the outcome in a conditional, as you need extra parentheses to silence compiler warnings. For example: if ((cp = skip_prefix(buf, "foo")) /* do something with cp */ Both of these make it harder to use for long if-chains, and we tend to use starts_with() instead. However, the first line of "do something" is often to then skip forward in buf past the prefix, either using a magic constant or with an extra strlen(3) (which is generally computed at compile time, but means we are repeating ourselves). This patch refactors skip_prefix() to return a simple boolean, and to provide the pointer value as an out-parameter. If the prefix is not found, the out-parameter is untouched. This lets you write: if (skip_prefix(arg, "foo ", &arg)) do_foo(arg); else if (skip_prefix(arg, "bar ", &arg)) do_bar(arg); Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-16Merge branch 'ow/config-mailmap-pathname'Libravatar Junio C Hamano1-1/+1
mailmap.file configuration names a pathname, hence should honor ~/path and ~user/path as its value. * ow/config-mailmap-pathname: config: respect '~' and '~user' in mailmap.file
2014-06-16Merge branch 'bg/xcalloc-nmemb-then-size'Libravatar Junio C Hamano1-2/+2
Like calloc(3), xcalloc() takes nmemb and then size. * bg/xcalloc-nmemb-then-size: transport-helper.c: rearrange xcalloc arguments remote.c: rearrange xcalloc arguments reflog-walk.c: rearrange xcalloc arguments pack-revindex.c: rearrange xcalloc arguments notes.c: rearrange xcalloc arguments imap-send.c: rearrange xcalloc arguments http-push.c: rearrange xcalloc arguments diff.c: rearrange xcalloc arguments config.c: rearrange xcalloc arguments commit.c: rearrange xcalloc arguments builtin/remote.c: rearrange xcalloc arguments builtin/ls-remote.c: rearrange xcalloc arguments
2014-06-16Merge branch 'jk/strbuf-tolower'Libravatar Junio C Hamano1-7/+1
* jk/strbuf-tolower: strbuf: add strbuf_tolower function
2014-06-06Merge branch 'nd/status-auto-comment-char'Libravatar Junio C Hamano1-2/+9
* nd/status-auto-comment-char: commit: allow core.commentChar=auto for character auto selection config: be strict on core.commentChar
2014-06-03Merge branch 'ew/config-protect-mode'Libravatar Junio C Hamano1-0/+16
* ew/config-protect-mode: config: preserve config file permissions on edits
2014-05-27config.c: rearrange xcalloc argumentsLibravatar Brian Gesiak1-2/+2
xcalloc() takes two arguments: the number of elements and their size. config.c includes several calls to xcalloc() that pass the arguments in reverse order: the size of a struct lock_file*, followed by the number to allocate. Rearrange them so they are in the correct order. Signed-off-by: Brian Gesiak <modocache@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-05-27config: respect '~' and '~user' in mailmap.fileLibravatar Øystein Walle1-1/+1
git_config_string() does not handle '~' and '~user' as part of the value. Using git_config_pathname() fixes this. Signed-off-by: Øystein Walle <oystwa@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-05-23strbuf: add strbuf_tolower functionLibravatar Jeff King1-7/+1
This is a convenience wrapper to call tolower on each character of the string. This makes config's lowercase() function obsolete, though note that because we have a strbuf, we are careful to operate over the whole strbuf, rather than assuming that a NUL is the end-of-string. We could continue to offer a pure-string lowercase, but there would be no callers (in most pure-string cases, we actually duplicate and lowercase the duplicate, for which we have the xstrdup_tolower wrapper). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-05-19commit: allow core.commentChar=auto for character auto selectionLibravatar Nguyễn Thái Ngọc Duy1-0/+3
When core.commentChar is "auto", the comment char starts with '#' as in default but if it's already in the prepared message, find another char in a small subset. This should stop surprises because git strips some lines unexpectedly. Note that git is not smart enough to recognize '#' as the comment char in custom templates and convert it if the final comment char is different. It thinks '#' lines in custom templates as part of the commit message. So don't use this with custom templates. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-05-19config: be strict on core.commentCharLibravatar Nguyễn Thái Ngọc Duy1-2/+6
We don't support comment _strings_ (at least not yet). And multi-byte character encoding could also be misinterpreted. The test with two commas is updated because it violates this. It's added with the patch that introduces core.commentChar in eff80a9 (Allow custom "comment char" - 2013-01-16). It's not clear to me _why_ that behavior is wanted. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-05-06config: preserve config file permissions on editsLibravatar Eric Wong1-0/+16
Users may already store sensitive data such as imap.pass in .git/config; making the file world-readable when "git config" is called to edit means their password would be compromised on a shared system. [v2: updated for section renames, as noted by Junio] Signed-off-by: Eric Wong <normalperson@yhbt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-04-18Merge branch 'jk/config-die-bad-number-noreturn'Libravatar Junio C Hamano1-0/+1
Squelch a false compiler warning from older gcc. * jk/config-die-bad-number-noreturn: config.c: mark die_bad_number as NORETURN
2014-04-16config.c: mark die_bad_number as NORETURNLibravatar Jeff King1-0/+1
This can help avoid -Wuninitialized false positives in git_config_int and git_config_ulong, as the compiler now knows that we do not return "ret" if we hit the error codepath. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-18Merge branch 'jk/config-path-include-fix' into maintLibravatar Junio C Hamano1-1/+5
include.path variable (or any variable that expects a path that can use ~username expansion) in the configuration file is not a boolean, but the code failed to check it. * jk/config-path-include-fix: handle_path_include: don't look at NULL value expand_user_path: do not look at NULL path
2014-03-14Merge branch 'ks/config-file-stdin'Libravatar Junio C Hamano1-23/+37
"git config" learned to read from the standard input when "-" is given as the value to its "--file" parameter (attempting an operation to update the configuration in the standard input of course is rejected). * ks/config-file-stdin: config: teach "git config --file -" to read from the standard input config: change git_config_with_options() interface builtin/config.c: rename check_blob_write() -> check_write() config: disallow relative include paths from blobs
2014-03-07Merge branch 'jc/core-checkstat-2.0'Libravatar Junio C Hamano1-14/+1
"core.statinfo" configuration variable, which was a never-advertised synonym to "core.checkstat", has been removed.
2014-02-27Merge branch 'jk/config-path-include-fix'Libravatar Junio C Hamano1-1/+5
include.path variable (or any variable that expects a path that can use ~username expansion) in the configuration file is not a boolean, but the code failed to check it. * jk/config-path-include-fix: handle_path_include: don't look at NULL value expand_user_path: do not look at NULL path
2014-02-18config: teach "git config --file -" to read from the standard inputLibravatar Kirill A. Shutemov1-14/+27
The patch extends git config --file interface to allow read config from stdin. Editing stdin or setting value in stdin is an error. Include by absolute path is allowed in stdin config, but not by relative path. Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-18config: change git_config_with_options() interfaceLibravatar Kirill A. Shutemov1-7/+6
We're going to have more options for config source. Let's alter git_config_with_options() interface to accept struct with all source options. Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-18config: disallow relative include paths from blobsLibravatar Jeff King1-4/+6
When we see a relative config include like: [include] path = foo we make it relative to the containing directory of the file that contains the snippet. This makes no sense for config read from a blob, as it is not on the filesystem. Something like "HEAD:some/path" could have a relative path within the tree, but: 1. It would not be part of include.path, which explicitly refers to the filesystem. 2. It would need different parsing rules anyway to determine that it is a tree path. The current code just uses the "name" field, which is wrong. Let's split that into "name" and "path" fields, use the latter for relative includes, and fill in only the former for blobs. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-28handle_path_include: don't look at NULL valueLibravatar Jeff King1-1/+5
When we see config like: [include] path the expand_user_path helper notices that the config value is empty, but we then dereference NULL while printing the error message (glibc will helpfully print "(null)" for us here, but we cannot rely on that). $ git -c include.path rev-parse error: Could not expand include path '(null)' fatal: unable to parse command-line config Instead of tweaking our message, let's actually use config_error_nonbool to match other config variables that expect a value: $ git -c include.path rev-parse error: Missing value for 'include.path' fatal: unable to parse command-line config Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-12-17Merge branch 'cc/starts-n-ends-with'Libravatar Junio C Hamano1-8/+8
Remove a few duplicate implementations of prefix/suffix comparison functions, and rename them to starts_with and ends_with. * cc/starts-n-ends-with: replace {pre,suf}fixcmp() with {starts,ends}_with() strbuf: introduce starts_with() and ends_with() builtin/remote: remove postfixcmp() and use suffixcmp() instead environment: normalize use of prefixcmp() by removing " != 0"
2013-12-12Merge branch 'tr/config-multivalue-lift-max'Libravatar Junio C Hamano1-6/+13
* tr/config-multivalue-lift-max: config: arbitrary number of matches for --unset and --replace-all
2013-12-06config: arbitrary number of matches for --unset and --replace-allLibravatar Thomas Rast1-6/+13
git-config used a static match array to hold the matches we want to unset/replace when using --unset or --replace-all. Use a variable-sized array instead. This in particular fixes the symptoms git-svn had when storing large numbers of svn-remote.*.added-placeholder entries in the config file. While the tests are rather more paranoid than just --unset and --replace-all, the other operations already worked. Indeed git-svn's usage only breaks the first time *after* creating so many entries, when it wants to unset and re-add them all. Reported-by: Jess Hottenstein <jess.hottenstein@gmail.com> Signed-off-by: Thomas Rast <tr@thomasrast.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-12-05replace {pre,suf}fixcmp() with {starts,ends}_with()Libravatar Christian Couder1-8/+8
Leaving only the function definitions and declarations so that any new topic in flight can still make use of the old functions, replace existing uses of the prefixcmp() and suffixcmp() with new API functions. The change can be recreated by mechanically applying this: $ git grep -l -e prefixcmp -e suffixcmp -- \*.c | grep -v strbuf\\.c | xargs perl -pi -e ' s|!prefixcmp\(|starts_with\(|g; s|prefixcmp\(|!starts_with\(|g; s|!suffixcmp\(|ends_with\(|g; s|suffixcmp\(|!ends_with\(|g; ' on the result of preparatory changes in this series. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-10-14config.c: mark file-local function staticLibravatar Ramsay Jones1-1/+1
Commit 7192777 refactors git_parse_ulong, which is public, into a more generic function. But since we kept the git_parse_ulong wrapper, only that part needs to be public; nobody outside the file calls the lower-level git_parse_unsigned. Noticed with sparse. ("'git_parse_unsigned' was not declared. Should it be static?") Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Explained-by: Jeff King <peff@peff.net> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
2013-09-12Merge branch 'jk/config-int-range-check'Libravatar Junio C Hamano1-17/+67
"git config" did not provide a way to set or access numbers larger than a native "int" on the platform; it now provides 64-bit signed integers on all platforms. * jk/config-int-range-check: git-config: always treat --int as 64-bit internally config: make numeric parsing errors more clear config: set errno in numeric git_parse_* functions config: properly range-check integer values config: factor out integer parsing from range checks
2013-09-09git-config: always treat --int as 64-bit internallyLibravatar Jeff King1-0/+17
When you run "git config --int", the maximum size of integer you get depends on how git was compiled, and what it considers to be an "int". This is almost useful, because your scripts calling "git config" will behave similarly to git internally. But relying on this is dubious; you have to actually know how git treats each value internally (e.g., int versus unsigned long), which is not documented and is subject to change. And even if you know it is "unsigned long", we do not have a git-config option to match that behavior. Furthermore, you may simply be asking git to store a value on your behalf (e.g., configuration for a hook). In that case, the relevant range check has nothing at all to do with git, but rather with whatever scripting tools you are using (and git has no way of knowing what the appropriate range is there). Not only is the range check useless, but it is actively harmful, as there is no way at all for scripts to look at config variables with large values. For instance, one cannot reliably get the value of pack.packSizeLimit via git-config. On an LP64 system, git happily uses a 64-bit "unsigned long" internally to represent the value, but the script cannot read any value over 2G. Ideally, the "--int" option would simply represent an arbitrarily large integer. For practical purposes, however, a 64-bit integer is large enough, and is much easier to implement (and if somebody overflows it, we will still notice the problem, and not simply return garbage). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-09-09config: make numeric parsing errors more clearLibravatar Jeff King1-5/+12
If we try to parse an integer config argument and get a number outside of the representable range, we die with the cryptic message: "bad config value for '%s'". We can improve two things: 1. Show the value that produced the error (e.g., bad config value '3g' for 'foo.bar'). 2. Mention the reason the value was rejected (e.g., "invalid unit" versus "out of range"). A few tests need to be updated with the new output, but that should not be representative of real-world breakage, as scripts should not be depending on the exact text of our stderr output, which is subject to i18n anyway. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-09-09config: set errno in numeric git_parse_* functionsLibravatar Jeff King1-4/+14
When we are parsing an integer or unsigned long, we use the strto*max functions, which properly set errno to ERANGE if we get a large value. However, we also do further range checks after applying our multiplication factor, but do not set ERANGE. This means that a caller cannot tell if an error was caused by ERANGE or if the input was simply not a valid number. This patch teaches git_parse_signed and git_parse_unsigned to set ERANGE for range errors, and EINVAL for other errors, so that the caller can reliably tell these cases apart. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-09-09config: properly range-check integer valuesLibravatar Jeff King1-6/+6
When we look at a config value as an integer using the git_config_int function, we carefully range-check the value we get and complain if it is out of our range. But the range we compare to is that of a "long", which we then cast to an "int" in the function's return value. This means that on systems where "int" and "long" have different sizes (e.g., LP64 systems), we may pass the range check, but then return nonsense by truncating the value as we cast it to an int. We can solve this by converting git_parse_long into git_parse_int, and range-checking the "int" range. Nobody actually cared that we used a "long" internally, since the result was truncated anyway. And the only other caller of git_parse_long is git_config_maybe_bool, which should be fine to just use int (though we will now forbid out-of-range nonsense like setting "merge.ff" to "10g" to mean "true", which is probably a good thing). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-09-09config: factor out integer parsing from range checksLibravatar Jeff King1-6/+22
When we are parsing integers for config, we use an intmax_t (or uintmax_t) internally, and then check against the size of our result type at the end. We can parameterize the maximum representable value, which will let us re-use the parsing code for a variety of range checks. Unfortunately, we cannot combine the signed and unsigned parsing functions easily, as we have to rely on the signed and unsigned C types internally. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-09-05Merge branch 'hv/config-from-blob' into maintLibravatar Junio C Hamano1-16/+16
Compilation fix on platforms with fgetc() and friends defined as macros. * hv/config-from-blob: config: do not use C function names as struct members
2013-08-30Merge branch 'hv/config-from-blob'Libravatar Junio C Hamano1-16/+16
Portability fix. * hv/config-from-blob: config: do not use C function names as struct members
2013-08-26config: do not use C function names as struct membersLibravatar Jeff King1-16/+16
According to C99, section 7.1.4: Any function declared in a header may be additionally implemented as a function-like macro defined in the header. Therefore calling our struct member function pointer "fgetc" may run afoul of unwanted macro expansion when we call: char c = cf->fgetc(cf); This turned out to be a problem on uclibc, which defines fgetc as a macro and causes compilation failure. The standard suggests fixing this in a few ways: 1. Using extra parentheses to inhibit the function-like macro expansion. E.g., "(cf->fgetc)(cf)". This is undesirable as it's ugly, and each call site needs to remember to use it (and on systems without the macro, forgetting will compile just fine). 2. Using #undef (because a conforming implementation must also be providing fgetc as a function). This is undesirable because presumably the implementation was using the macro for a performance benefit, and we are dropping that optimization. Instead, we can simply use non-colliding names. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-22Merge branch 'hv/config-from-blob'Libravatar Junio C Hamano1-48/+169
Allow configuration data to be read from in-tree blob objects, which would help working in a bare repository and submodule updates. * hv/config-from-blob: do not die when error in config parsing of buf occurs teach config --blob option to parse config from database config: make parsing stack struct independent from actual data source config: drop cf validity check in get_next_char() config: factor out config file stack management
2013-07-12do not die when error in config parsing of buf occursLibravatar Heiko Voigt1-2/+8
If a config parsing error in a file occurs we can die and let the user fix the issue. This is different for the buf parsing function since it can be used to parse blobs of .gitmodules files. If a parsing error occurs here we should proceed since otherwise a database containing such an error in a single revision could be rendered unusable. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-12teach config --blob option to parse config from databaseLibravatar Heiko Voigt1-2/+84
This can be used to read configuration values directly from git's database. For example it is useful for reading to be checked out .gitmodules files directly from the database. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>