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* jc/ll-merge-binary-ours:
ll-merge: warn about inability to merge binary files only when we can't
attr: "binary" attribute should choose built-in "binary" merge driver
merge: teach -Xours/-Xtheirs to binary ll-merge driver
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The built-in "binary" attribute macro expands to "-diff -text", so
that textual diff is not produced, and the contents will not go
through any CR/LF conversion ever. During a merge, it should also
choose the "binary" low-level merge driver, but it didn't.
Make it expand to "-diff -merge -text".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Often we consult an in-tree .gitattributes file that exists per
directory. Majority of directories do not usually have such a file,
and it is perfectly fine if we cannot open it because there is no
such file, but we do want to know when there is an I/O or permission
error. Earlier, we made the codepath warn when we fail to open it
for reasons other than ENOENT for that reason.
We however sometimes have to attempt to open the .gitattributes file
from a directory that does not exist in the commit that is currently
checked out. "git pack-objects" wants to know if a path is marked
with "-delta" attributes, and "git archive" wants to know about
export-ignore and export-subst attributes. Both commands may and do
need to ask the attributes system about paths in an arbitrary
commit. "git diff", after removing an entire directory, may want to
know textconv on paths that used to be in that directory.
Make sure we also ignore a failure to open per-directory attributes
file due to ENOTDIR.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The previous series introduced warnings to multiple places, but it
could become tiring to see the warning on the same path over and
over again during a single run of Git. Making just one function
responsible for issuing this warning, we could later choose to keep
track of which paths we issued a warning (it would involve a hash
table of paths after running them through real_path() or something)
in order to reduce noise.
Right now we do not know if the noise reduction is necessary, but it
still would be a good code reduction/sharing anyway.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Just like config and gitignore files, we silently ignore
missing or inaccessible attribute files. An existent but
inaccessible file is probably a configuration error, so
let's warn the user.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If we don't have a core.attributesfile configured, we fall
back to checking XDG config, which is usually
$HOME/.config/git/attributes.
However, if $HOME is unset, then home_config_paths will return
NULL, and we end up calling fopen(NULL).
Depending on your system, this may or may not cause the
accompanying test to fail (e.g., on Linux and glibc, the
address will go straight to open, which will return EFAULT).
However, valgrind will reliably notice the error.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This gives the default value for the core.attributesfile variable
following the exact same logic of the previous change for the
core.excludesfile setting.
Signed-off-by: Huynh Khoi Nguyen Nguyen <Huynh-Khoi-Nguyen.Nguyen@ensimag.imag.fr>
Signed-off-by: Valentin Duperray <Valentin.Duperray@ensimag.imag.fr>
Signed-off-by: Franck Jonas <Franck.Jonas@ensimag.imag.fr>
Signed-off-by: Lucien Kong <Lucien.Kong@ensimag.imag.fr>
Signed-off-by: Thomas Nguy <Thomas.Nguy@ensimag.imag.fr>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint-1.7.6:
attr: fix leak in free_attr_elem
t2203: fix wrong commit command
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This function frees the individual "struct match_attr"s we
have allocated, but forgot to free the array holding their
pointers, leading to a minor memory leak (but it can add up
after checking attributes for paths in many directories).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Thas would de-dent the body of a function that has grown rather large over
time, making it a bit easier to read.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In prepare_attr_stack, we pop the old elements of the stack
(which were left from a previous lookup and may or may not
be useful to us). Our loop to do so checks that we never
reach the top of the stack. However, the code immediately
afterwards will segfault if we did actually reach the top of
the stack.
Fortunately, this is not an actual bug, since we will never
pop all of the stack elements (we will always keep the root
gitattributes, as well as the builtin ones). So the extra
check in the loop condition simply clutters the code and
makes the intent less clear. Let's get rid of it.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When we prepare the attribute stack for a lookup on a path,
we start with the cached stack from the previous lookup
(because it is common to do several lookups in the same
directory hierarchy). So the first thing we must do in
preparing the stack is to pop any entries that point to
directories we are no longer interested in.
For example, if our stack contains gitattributes for:
foo/bar/baz
foo/bar
foo
but we want to do a lookup in "foo/bar/bleep", then we want
to pop the top element, but retain the others.
To do this we walk down the stack from the top, popping
elements that do not match our lookup directory. However,
the test do this simply checked strncmp, meaning we would
mistake "foo/bar/baz" as a leading directory of
"foo/bar/baz_plus". We must also check that the character
after our match is '/', meaning we matched the whole path
component.
There are two special cases to consider:
1. The top of our attr stack has the empty path. So we
must not check for '/', but rather special-case the
empty path, which always matches.
2. Typically when matching paths in this way, you would
also need to check for a full string match (i.e., the
character after is '\0'). We don't need to do so in
this case, though, because our path string is actually
just the directory component of the path to a file
(i.e., we know that it terminates with "/", because the
filename comes after that).
Helped-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When core.ignorecase is true, the file globs configured in the
.gitattributes file should be matched case-insensitively against the paths
in the working directory. Let's do so.
Plus, add some tests.
The last set of tests is performed only on a case-insensitive filesystem.
Those tests make sure that git handles the case where the .gitignore file
resides in a subdirectory and the user supplies a path that does not match
the case in the filesystem. In that case^H^H^H^Hsituation, part of the
path supplied by the user is effectively interpreted case-insensitively,
and part of it is dependent on the setting of core.ignorecase. git will
currently only match the portion of the path below the directory holding
the .gitignore file according to the setting of core.ignorecase.
This is also partly future-proofing. Currently, git builds the attr stack
based on the path supplied by the user, so we don't have to do anything
special (like use strcmp_icase) to handle the parts of that path that don't
match the filesystem with respect to case. If git instead built the attr
stack by scanning the repository, then the paths in the origin field would
not necessarily match the paths supplied by the user. If someone makes a
change like that in the future, these tests will notice.
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This code calls git_config from a helper function to parse the config entry
it is interested in. Calling git_config in this way may cause a problem if
the helper function can be called after a previous call to git_config by
another function since the second call to git_config may reset some
variable to the value in the config file which was previously overridden.
The above is not a problem in this case since the function passed to
git_config only parses one config entry and the variable it sets is not
assigned outside of the parsing function. But a programmer who desires
all of the standard config options to be parsed may be tempted to modify
git_attr_config() so that it falls back to git_default_config() and then it
_would_ be vulnerable to the above described behavior.
So, move the call to git_config up into the top-level cmd_* function and
move the responsibility for parsing core.attributesfile into the main
config file parser.
Which is only the logical thing to do ;-)
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The "x"-prefixed versions of strdup, malloc, etc. will check whether the
allocation was successful and terminate the process otherwise.
A few uses of malloc were left alone since they already implemented a
graceful path of failure or were in a quasi external library like xdiff.
Additionally, the call to malloc in compat/win32/syslog.c was not modified
since the syslog() implemented there is a die handler and a call to the
x-wrappers within a die handler could result in recursion should memory
allocation fail. This will have to be addressed separately.
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This code sequence performs a strcpy into the buf member of a strbuf
struct. The strcpy may move the position of the terminating nul of the
string and effectively change the length of string so that it does not
match the len member of the strbuf struct.
Currently, this sequence works since the strbuf was given a hint when it
was initialized to allocate enough space to accomodate the string that will
be strcpy'ed, but this is an implementation detail of strbufs, not a
guarantee.
So, lets rework this sequence so that the strbuf is only manipulated by
strbuf functions, and direct modification of its "buf" member is not
necessary.
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* mh/attr:
Unroll the loop over passes
Change while loop into for loop
Determine the start of the states outside of the pass loop
Change parse_attr() to take a pointer to struct attr_state
Increment num_attr in parse_attr_line(), not parse_attr()
Document struct match_attr
Add a file comment
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The passes no longer share much code, and the unrolled code is easier
to understand.
Use a new index variable instead of num_attr for the second loop, as
we are no longer counting attributes but rather indexing through them.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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parse_attr() only needs access to the attr_state to which it should
store its results, not to the whole match_attr structure. This change
also removes the need for it to know num_attr. Change its signature
accordingly and add a comment.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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num_attr is incremented iff parse_attr() returns non-NULL. So do the
counting in parse_attr_line() instead of within parse_attr(). This
allows an integer rather than a pointer to an integer to be passed to
parse_attr().
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Consolidate here a few general comments plus links to other
documentation. Delete a comment with an out-of-date description of
the .gitattributes file format.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Suggested by: Junio Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a function, git_all_attrs(), that reports on all attributes that
are set on a path.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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bootstrap_attr_stack() also checks whether attr_stack is already set.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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prepare_attr_stack() does the same thing.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It will be present in any likely future reimplementation, and its
availability simplifies other code.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Previously, it was possible to have a line like "file.txt =foo" in a
.gitattribute file, after which an invocation like "git check-attr ''
-- file.txt" would succeed. This patch disallows both constructs.
Please note that any existing .gitattributes file that tries to set an
empty attribute will now trigger the error message "error: : not a
valid attribute name" whereas previously the nonsense was allowed
through.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Setting attributes to arbitrary values ("attribute=value") is now
supported, so it is no longer necessary for this comment to justify
prohibiting '=' in an attribute name.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In particular, sparse issues the "symbol 'a_symbol' was not declared.
Should it be static?" warnings for the following symbols:
attr.c:468:12: 'git_etc_gitattributes'
attr.c:476:5: 'git_attr_system'
vcs-svn/svndump.c:282:6: 'svndump_read'
vcs-svn/svndump.c:417:5: 'svndump_init'
vcs-svn/svndump.c:432:6: 'svndump_deinit'
vcs-svn/svndump.c:445:6: 'svndump_reset'
The symbols in attr.c only require file scope, so we add the static
modifier to their declaration.
The symbols in vcs-svn/svndump.c are external symbols, and they
already have extern declarations in the "svndump.h" header file,
so we simply include the header in svndump.c.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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test-lib sets $HOME to protect against pollution from user settings,
so setting GIT_ATTR_NOGLOBAL would be redundant. Simplify by
eliminating support for that environment variable altogether.
GIT_ATTR_NOGLOBAL was introduced in v1.7.4-rc0~208^2 (Add global and
system-wide gitattributes, 2010-09-01) as an undocumented feature for
use by the test suite. It never ended up being used (neither within
git.git nor in other projects).
This patch does not affect GIT_ATTR_NOSYSTEM, which should still be
useful.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Allow gitattributes to be set globally and system wide. This way, settings
for particular file types can be set in one place and apply for all user's
repositories.
The location of system-wide attributes file is $(prefix)/etc/gitattributes.
The location of the global file can be configured by setting
core.attributesfile.
Some parts of the code were copied from the implementation of the same
functionality in config.c.
Signed-off-by: Petr Onderka <gsvick@gmail.com>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* 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
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As discussed on the list, "crlf" is not an optimal name. Linus
suggested "text", which is much better.
Signed-off-by: Eyvind Bernhardsen <eyvind.bernhardsen@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When using macros it is otherwise hard to know whether an
attribute set by the macro should override an already set
attribute. Consider the following .gitattributes file:
[attr]mybinary binary -ident
* ident
foo.bin mybinary
bar.bin mybinary ident
Without this patch both foo.bin and bar.bin will have
the ident attribute set, which is probably not what
the user expects. With this patch foo.bin will have an
unset ident attribute, while bar.bin will have it set.
Signed-off-by: Henrik Grubbström <grubba@grubba.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When using macros it isn't inconceivable to have an attribute
being set by a macro, and then being reset explicitly.
Signed-off-by: Henrik Grubbström <grubba@grubba.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When debug_set() was called during macro expansion, it
received a pointer to a struct git_attr rather than a
string.
Signed-off-by: Henrik Grubbström <grubba@grubba.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The function took (name, namelen) as its arguments, but all the public
callers wanted to pass a full string.
Demote the counted-string interface to an internal API status, and allow
public callers to just pass the string to the function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Free the memory allocated for struct strbuf pathbuf when we're done.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Shifting 'unsigned char' or 'unsigned short' left can result in sign
extension errors, since the C integer promotion rules means that the
unsigned char/short will get implicitly promoted to a signed 'int' due to
the shift (or due to other operations).
This normally doesn't matter, but if you shift things up sufficiently, it
will now set the sign bit in 'int', and a subsequent cast to a bigger type
(eg 'long' or 'unsigned long') will now sign-extend the value despite the
original expression being unsigned.
One example of this would be something like
unsigned long size;
unsigned char c;
size += c << 24;
where despite all the variables being unsigned, 'c << 24' ends up being a
signed entity, and will get sign-extended when then doing the addition in
an 'unsigned long' type.
Since git uses 'unsigned char' pointers extensively, we actually have this
bug in a couple of places.
I may have missed some, but this is the result of looking at
git grep '[^0-9 ][ ]*<<[ ][a-z]' -- '*.c' '*.h'
git grep '<<[ ]*24'
which catches at least the common byte cases (shifting variables by a
variable amount, and shifting by 24 bits).
I also grepped for just 'unsigned char' variables in general, and
converted the ones that most obviously ended up getting implicitly cast
immediately anyway (eg hash_name(), encode_85()).
In addition to just avoiding 'unsigned char', this patch also tries to use
a common idiom for the delta header size thing. We had three different
variations on it: "& 0x7fUL" in one place (getting the sign extension
right), and "& ~0x80" and "& 0x7f" in two other places (not getting it
right). Apart from making them all just avoid using "unsigned char" at
all, I also unified them to then use a simple "& 0x7f".
I considered making a sparse extension which warns about doing implicit
casts from unsigned types to signed types, but it gets rather complex very
quickly, so this is just a hack.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Essentially; s/type* /type */ as per the coding guidelines.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This instructs attr mechanism, not to look into working .gitattributes
at all. Needed by tools that does not handle working directory, such
as "git archive".
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Traditionally we used .gitattributes file from the work tree if exists,
and otherwise read from the index as a fallback. When switching to a
branch that has an updated .gitattributes file, and entries in it give
different attributes to other paths being checked out, we should instead
read from the .gitattributes in the index.
This breaks a use case of fixing incorrect entries in the .gitattributes
in the work tree (without adding it to the index) and checking other paths
out, though.
$ edit .gitattributes ;# mark foo.dat as binary
$ rm foo.dat
$ git checkout foo.dat
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If PATH_MAX on your system is smaller than a path stored in the git repo,
it may cause the buffer overflow in prepare_attr_stack.
Signed-off-by: Dmitry Potapov <dpotapov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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