Add string comparison functions that respect the ignore_case variable.
Multiple locations within this patch series alter a case sensitive
string comparison call such as strcmp() to be a call to a string
comparison call that selects case comparison based on the global
ignore_case variable. Behaviorally, when core.ignorecase=false, the
*_icase() versions are functionally equivalent to their C runtime
counterparts. When core.ignorecase=true, the *_icase() versions perform
a case insensitive comparison.
Like Linus' earlier ignorecase patch, these may ignore filename
conventions on certain file systems. By isolating filename comparisons
to certain functions, support for those filename conventions may be more
easily met.
Signed-off-by: Joshua Jensen <jjensen@workspacewhiz.com> Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Makefile & configure: add a NO_FNMATCH_CASEFOLD flag
On some platforms (like Solaris) there is a fnmatch, but it doesn't
support the GNU FNM_CASEFOLD extension that's used by the
jj/icase-directory series' fnmatch_icase wrapper.
Change the Makefile so that it's now possible to set
NO_FNMATCH_CASEFOLD=YesPlease on those systems, and add a configure
probe for it.
Unlike the NO_REGEX check we don't add AC_INCLUDES_DEFAULT to our
headers. This is because on a GNU system the definition of
FNM_CASEFOLD in fnmatch.h is guarded by:
#if !defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _GNU_SOURCE
One of the headers AC_INCLUDES_DEFAULT includes ends up defining one
of those, so if we'd use it we'd always get
NO_FNMATCH_CASEFOLD=YesPlease on GNU systems, even though they have
FNM_CASEFOLD.
Windows and MinGW both lack fnmatch() in their C library and needed
compat/fnmatch, but they had duplicate code for adding the compat
function, and there was no Makefile flag or configure check for
fnmatch.
Change the Makefile it so that it's now possible to compile the compat
function with a NO_FNMATCH=YesPlease flag, and add a configure probe
for it.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed integer overflow is not defined in C, so do not depend on it.
This fixes a problem with GCC 4.4.0 and -O3 where the optimizer would
consider "consumed_bytes > consumed_bytes + bytes" as a constant
expression, and never execute the die()-call.
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com> Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are buggy implementations of S_ISxxx(m) macros on some platforms
(e.g. NetBSD). The issue is that NetBSD doesn't take care to wrap its
macro arguments in parentheses, so on Linux and sane systems we have
S_ISREG(m) defined as something like:
(((m) & S_IFMT) == S_IFREG)
But on NetBSD:
((m & _S_IFMT) == _S_IFREG)
Since a caller in builtin/diff.c called our macro as `S_IFREG | 0644'
this bug introduced a logic error on NetBSD, since the precedence of
bit-wise & is higher than | in C.
[jc: took change description from Ævar Arnfjörð Bjarmason's patch]
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
xdiff: cast arguments for ctype functions to unsigned char
The ctype functions isspace(), isalnum(), et al take an integer
argument representing an unsigned character, or -1 for EOF. On
platforms with a signed char, it is unsafe to pass a char to them
without casting it to unsigned char first.
Most of git is already shielded against this by the ctype
implementation in git-compat-util.h, but xdiff, which uses libc
ctype.h, ought to be fixed.
Noticed-by: der Mouse <mouse@Rodents-Montreal.ORG> Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The buffer used to construct paths like ".git/objects/info" and
".git/objects/pack" is allocated on the heap and never freed.
So free it. While at it, factor out the relevant code into its own
function and rename the sha1_dir variable to object_directory (to
match the change in everyday usage after the renaming of
SHA1_FILE_DIRECTORY in v0.99~603^2~7, 2005).
Noticed by valgrind while setting up tests (in test-lib).
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-gui: enable the Tk console when tracing/debugging on Windows
Without any standard channels the trace option is pretty useless on Win32
unless you can show the Tk console which captures such output. This also
permits introspection of the running application to assist in debugging.
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
On Windows, avoid git-gui to call Cygwin's nice utility
It's a common case for Windows developers to have both Cygwin and msysGit
installed. Unfortunately, some scenarios also require to have Cygwin in PATH.
By default, Cygwin comes with nice.exe, while msysGit does not. Since git-gui
calls nice if it is in PATH, this results in Cygwin's nice.exe being called
from msysGit's git-gui. Mixing Cygwin and msysGit generally is not a good idea,
and in this particular case it causes differences not being correctly detected.
So we only call nice.exe on Windows if it is in the same directory as git.exe.
This way, this work-around does neither affect a pure Cygwin environment, or
the case when nice.exe will be shipped with msysGit at some point in time.
This fixes msysGit issue 394.
Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
send-email: Don't leak To: headers between patches
If the first patch in a series has a To: header in the file and the
second patch in the series doesn't the address from the first patch will
be part of the To: addresses in the second patch. Fix this by treating the
to list like the cc list. Have an initial to list come from the command
line, user input and config options. Then build up a to list from each
patch and concatenate the two together before sending the patch. Finally,
reset the list after sending each patch so the To: headers from a patch
don't get used for the next one.
Reported-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
setup: make sure git dir path is in a permanent buffer
If setup_git_env() is run before the usual repository discovery
sequence and .git is a file with the text
gitdir: <path>
(with <path> any string) then the in-core git_dir variable is set to
the result of converting <path> to an absolute path using
make_absolute_path().
Unfortunately make_absolute_path() returns its result in a static
buffer that is overwritten by later calls. Such a call could cause
later accesses to git_dir (from git_pathdup(), for example) to read
the wrong path, leaving git very confused.
It is not obvious whether any existing code in git will trigger the
problem, but in any case, it is worth a few dozen bytes to copy the
return value from make_absolute_path() for some added peace of mind.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
As of 2dbc887e, shell.c employs execv(), so provide a MinGW-specific
mingw_execv() override, complementing existing mingw_execvp() and
cousins.
As a bonus, this also resolves a compilation warning due to an
execv() prototype mismatch between Linux and MinGW. Linux expects
the second argument to be (char *const *), whereas MinGW expects
(const char *const *).
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
shell.c defines macro HELP_COMMAND which collides with a like-named
macro from winuser.h. Avoid collision by sanitizing preprocessor
namespace after including Windows headers.
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Cloning via relative path fails for a project residing immediately under
the root directory of a DOS drive. For instance, for project c:/foo,
issuing "cd c:/" followed by "git clone foo bar" fails with error
"Unable to find remote helper for 'c'". The problem is caused by
make_nonrelative_path() incorrectly returning c://foo rather than
c:/foo for input "foo". The bogus path c://foo is misinterpreted by
transport_get() as a URL with unrecognized protocol "c", hence the
missing remote helper error. Fix make_nonrelative_path() to return
c:/foo rather than c://foo (and /foo rather than //foo on Unix).
Resolves msysgit issue #501 [1]
[PT: squashed in changes requested by Junio [2][3]]
Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
fetch_and_setup_pack_index() apparently pass a NULL-pointer to
parse_pack_index(), which in turn pass it to check_packed_git_idx(),
which again pass it to open(). Since open() already sets errno
correctly for the NULL-case, let's just avoid the problematic strcmp.
[PT: squashed in fix for fopen which was missed first time round]
Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
git-am: fix detection of absolute paths for windows
Add an is_absolute_path function to abstract out platform differences
in checking for an absolute or relative path.
Specifically fixes t4150-am on Windows.
[PT: updated following suggestion from j6t to support \* and //*]
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Side-step MSYS-specific path "corruption" leading to t5560 failure.
Upon program invocation, MSYS converts environment variables containing
path-like values from Unix-style to DOS-style under the assumption that
the program being invoked understands only DOS-style pathnames. For
instance, the Unix-style path /msysgit is translated to c:/msysgit. For
test t5560, the path being requested from git-http-backend is specified
via environment variable PATH_INFO as a URL path of the form
/repo.git/foobar, which git-http-backend combines with GIT_PROJECT_ROOT
to determine the actual physical path within the repository. This is a
case where MSYS's conversion of the path-like value of PATH_INFO causes
harm, for two reasons. First, the resulting converted path, when joined
with GIT_PROJECT_ROOT is bogus (for instance,
"C:/msysgit/git/t/trash-zzz/C:/msysgit/repo.git/HEAD"). Second, the
converted PATH_INFO path is rejected by git-http-backend as an 'alias'
due to validation failure on the part of daemon_avoid_alias().
Unfortunately, the standard work-around of doubling the leading slash
(i.e. //repo.git/foobar) to suppress MSYS path conversion works only for
command-line arguments, but not for environment variables.
Consequently, side step the problem by instead passing git-http-backend
an already-constructed full path rather than components GIT_PROJECT_ROOT
and PATH_INFO.
Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Side-step sed line-ending "corruption" leading to t6038 failure.
By default, MSYS sed throws away CR from CRLF line-endings. Tests
t6038.5 and t6038.6 employ sed to normalize conflict output of git-merge
for validation purposes. These tests expect CRLF line-endings to be
present in the normalized output of git-merge, and thus fail when sed
undesirably removes CR. Fix by employing sed's -b/--binary switch to
suppress its default behavior of dropping CR characters.
Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
By default, MSYS grep reads in text-mode and converts CRLF into LF line
endings. For testing HTTP use binary mode (-U) as checking is done for
CR in HTTP headers
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
These two tests fail on msysGit because /dev/null is an alias for nul on
Windows and when reading the value back from git config the alias does
not match the real filename. Also the HOME environment variable has a
unix-style path but git returns a native equivalent path for '~'. As
these are platform-dependent equivalent results it seems simplest to
skip the test entirely.
Moves the NOT_MINGW prereq from t5503 into the test library.
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
MinGW: fix stat() and lstat() implementations for handling symlinks
In msysGit the stat() function has been implemented using mingw_lstat
which sets the st_mode member to S_IFLNK when a symbolic links is found.
This causes the is_executable function to return when git attempts to
build a list of available commands in the help code and we end up missing
most git commands. (msysGit issue #445)
This patch modifies the implementation so that lstat() will return the link
flag but if we are called as stat() we read the size of the target and set
the mode to that of a regular file.
Includes squashed fix st_mode for symlink dirs
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net> Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
* maint:
Fix typo in pack-objects' usage
Make sure that git_getpass() never returns NULL
t0004 (unwritable files): simplify error handling
rev-list-options: clarify --parents and --children
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The result of git_getpass() is used without checking for NULL, so let's
just die() instead of returning NULL.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change `while(<$fh>) { my $c = $_' to `while(my $c = <$fh>) {', and
use `chomp $c' instead of `$c =~ s/\n$//g;', the two are equivalent in
this case.
I've also changed the --cccmd test so that we test for the stripping
of whitespace at the beginning of the lines returned from the
--cccmd. I think we probably shouldn't do this, but it was there
already so I haven't changed the behavior.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: make_message_id use "require" instead of "use"
Change the use of Sys::Hostname from a "use" to a "require". The
former happens in an implicit BEGIN block and is thus immune from the
if block it's contained in, so it's always loaded.
This should speed up the invocation of git-send-email by a few
milliseconds.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If close fails we want to emit errno, not the return code of whatever
happened to be the child process run.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: use (?:) instead of () if no match variables are needed
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: sanitize_address use qq["foo"], not "\"foo\""
Perl provides an alternate quote syntax which can make using "" inside
interpolated strings easier to read.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
There's no reason to explicitly stringify a variable in Perl unless
it's an overloaded object and you want to call overload::StrVal,
otherwise it's just creating a new scalar redundantly.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change the regex introduced in a03bc5b to use the \E...\Q escape
syntax instead of using backslashes. It's more readable like this, and
easier to grep for.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: cleanup_compose_files doesn't need a prototype
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: unique_email_list doesn't need a prototype
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: file_declares_8bit_cte doesn't need a prototype
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: get_patch_subject doesn't need a prototype
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: use lexical filehandles during sending
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.comReviewed-by: Avery Pennarun <apenwarr@gmail.com> Reviewed-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow for gitweb-specific Makefile config to reside in config.mak file
in the 'gitweb/' subdirectory. This means that gitweb-specific
build-time configuration variable can reside in gitweb-specific
gitweb/config.mak
Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t/gitweb-lib.sh: Add support for GITWEB_TEST_INSTALLED
You can set the GITWEB_TEST_INSTALLED environment variable to the
gitwebdir (the directory where gitweb is installed / deployed to) of
an existing gitweb instalation, or to the pathname of installed gitweb
script, to test that installation.
This change is intended to make it possible to test that process of
installing gitweb and the modules it depends on works correctly (after
splitting gitweb).
If GITWEB_TEST_INSTALLED is used, print what script are we testing
to make it easy to spot that we test installed gitweb.
Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
gitweb: Move call to evaluate_git_version after evaluate_gitweb_config
Now evaluate_git_version() is inside run_request() to be called for each
request, instead of once per starting gitweb; this currently matters only
when using FastCGI interface (gitweb.fcgi).
This change was done because evaluate_git_version() uses $GIT variable,
which can be set / modified by gitweb config file, but the variable is
modified this way by gitweb config file used in gitweb tests. Without
this change there is spurious extra output from t9500 test when tests are
run with '--debug' option.
Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff: avoid repeated scanning while looking for funcname
For each hunk, xdl_find_func searches the preimage for a function name
until the beginning of the file. If the file does not contain any
function names, this search has complexity O(n^2) in the number of
hunks n.
Instead, inline xdl_find_func() and keep track of up to which line we
have scanned already and the contents of the last funcname line that
we have found.
Noticed and a different approach proposed by Clemens Buchacher.
This alternative solution was done by René Scharfe.
... normal test script ...
status=$?
... cleanup ...
(exit $status)
set up cleanup commands with test_when_finished. This makes the
test script a little shorter, and more importantly, it ensures errors
during cleanup are reported.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: Remove redundant path clearing for D/F conflicts
The code had several places where individual checks were done to remove
files that could be in the way of directories in D/F conflicts. Not all
D/F conflicts could have a path cleared for them in such a manner, however,
leading to the need to create make_room_for_directories_of_df_conflicts()
as done in the previous patch. That new function could not have been
incorporated into the code sooner, since not all relevant code paths had
been deferred to process_df_entry() yet, leading to the creation of even
more of these now-redundant path removals.
Clean out all of these extra D/F path clearing cases.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: Make room for directories in D/F conflicts
When there are unmerged entries present, make sure to check for D/F
conflicts first and remove any files present in HEAD that would be in the
way of creating files below the correspondingly named directory. Such
files will be processed again at the end of the merge in
process_df_entry(); at that time we will be able to tell if we need to
and can reinstate the file, whether we need to place its contents in a
different file due to the directory still being present, etc.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
handle_delete_modify(): Check whether D/F conflicts are still present
If all the paths below some directory involved in a D/F conflict were not
removed during the rest of the merge, then the contents of the file whose
path conflicted needs to be recorded in file with an alternative filename.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge_content(): Check whether D/F conflicts are still present
If all the paths below some directory involved in a D/F conflict were not
removed during the rest of the merge, then the contents of the file whose
path conflicted needs to be recorded in file with an alternative filename.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
conflict_rename_rename_1to2(): Fix checks for presence of D/F conflicts
This function is called from process_df_entry(), near the end of the merge.
Rather than just checking whether one of the sides of the merge had a
directory at the same path as one of our files, check whether that
directory is still present by this point of our merge.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
conflict_rename_delete(): Check whether D/F conflicts are still present
If all the paths below some directory involved in a D/F conflict were not
removed during the rest of the merge, then the contents of the file whose
path conflicted needs to be recorded in file with an alternative filename.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: Delay modify/delete conflicts if D/F conflict present
When handling merges with modify/delete conflicts, if the modified path is
involved in a D/F conflict, handle the issue in process_df_entry() rather
than process_entry().
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: Move handling of double rename of one file to other file
Move the handling of rename/rename conflicts where one file is renamed on
both sides to the same file, from process_renames() to process_entry().
Here we avoid the three way merge logic by just using
update_stages_and_entry() to move the higher stage entries in the index
from the rename source to the rename destination, and then allow
process_entry() to do its magic.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a commit moves A to B while another commit created B (or moved C to
B), and these two different commits serve as different merge-bases for a
later merge, c94736a (merge-recursive: don't segfault while handling
rename clashes 2009-07-30) added some special code to avoid segfaults.
Since that commit, the two versions of B are merged in place (which could
be potentially conflicting) and the intermediate result is used as the
virtual ancestor.
However, right before this special merge, try_merge was turned on, meaning
that process_renames() would try an alternative merge that ignores the
'add' part of the conflict, and, if the merge is clean, store that as the
new virtual ancestor. This could cause incorrect merging of criss-cross
merges; it would typically result in just recording a slightly confusing
merge base, but in some cases it could cause silent acceptance of one side
of a merge as the final resolution when a conflict should have been
flagged.
When we do a special merge for such a rename/add conflict between
merge-bases, turn try_merge off to avoid an inappropriate second merge.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
To facilitate having this function called later using information stored
in a rename_df_conflict_info struct, accept a diff_filepair instead of a
rename.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: New function to assist resolving renames in-core only
process_renames() and process_entry() have nearly identical code for
doing three-way file merging to resolve content changes. Since we are
already deferring some of the current rename handling in order to better
handle D/F conflicts, it seems to make sense to defer content merging as
well and remove the (nearly) duplicated code sections for handling this
merging.
To facilitate this process, add a new update_stages_and_entry() function
which will map the higher stage index entries from two files involved in a
rename into the resulting rename destination's index entries, and update
the associated stage_data structure.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: New data structures for deferring of D/F conflicts
Since we need to resolve paths (including renames) in-core first and defer
checking of D/F conflicts (namely waiting to see if directories are still
in the way after all paths are resolved) before updating files involved in
D/F conflicts, we will need to first process_renames, then record some
information about the rename needed at D/F resolution time, and then make
use of that information when resolving D/F conflicts at the end.
This commit adds some relevant data structures for storing the necessary
information.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: Move process_entry's content merging into a function
This move is in preparation for merge_content growing and being called from
multiple places in order to handle D/F conflicts.
I also snuck in a small change to the output in the case that the merged
content for the file matches the current file contents, to make it better
match (and thus more able to take over) how other merge_file() calls in
process_renames() are handled.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since we want to resolve merges in-core and then detect at the end whether
D/F conflicts remain in the way, we should just apply renames in-core and
let logic elsewhere check for D/F conflicts.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: Rename conflict_rename_rename*() for clarity
The names conflict_rename_rename and conflict_rename_rename_2 did not make
it clear what they were handling. Since the first of these handles one
file being renamed in both branches to different files, while the latter
handles two different files being renamed to the same thing, add a little
'1to2' and '2to1' suffix on these and an explanatory comment to make their
intent clearer.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: Small code clarification -- variable name and comments
process_renames() had a variable named "stage" and derived variables
src_other and dst_other whose purpose was not immediately obvious; also,
I want to extend the scope of this variable and use it later, so it should
have a more descriptive name. Do so, and add a brief comment explaining
how it is used and what it relates to.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If merging two lines of development involves a rename/add conflict, and two
different people make such a merge but resolve it differently, and then
someone tries to merge the resulting two merges, then they should clearly
get a conflict due to the different resolutions from the previous
developers. However, in some such cases the conflict would not be detected
and git would silently accept one of the two versions being merged as the
final merge resolution.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t6036: Add a second testcase similar to the first but with content changes
c94736a (merge-recursive: don't segfault while handling rename clashes
2009-07-30) added t6036 with a testcase that involved dual renames and a
criss-cross merge. Add a test that is nearly identical, but which also
involves content modification -- a case git currently does not merge
correctly.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t6036: Test index and worktree state, not just that merge fails
c94736a (merge-recursive: don't segfault while handling rename clashes
2009-07-30) added this testcase with an interesting corner case test,
which previously had cased git to segfault. This test ensures that the
segfault does not return and that the merge correctly fails; just add
some checks that verify the state of the index and worktree after the merge
are correct.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t6022: Add tests for rename/rename combined with D/F conflicts
Add tests where one file is renamed to two different paths in different
sides of history, and where each of the new files matches the name of a
directory from the opposite side of history. Include tests for both the
case where the merge results in those directories not being cleanly
removed, and where those directories are cleanly removed during the merge.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
An interesting testcase is having two files each in their own subdirectory
getting renamed to the toplevel at the directory pathname of the other.
Questions arise as to whether the order of operations matters and whether
the directories can correctly get out of the way and make room for the
new files.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t6022: Add tests with both rename source & dest involved in D/F conflicts
Having the source of a rename be involved in a directory/file conflict does
not currently pose any difficulties to the current merge-recursive
algorithm (in contrast to destinations of renames and D/F conflicts).
However, combining the two seemed like good testcases to include for
completeness.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t6022: Add tests for reversing order of merges when D/F conflicts present
When merging two branches with some path involved in a D/F conflict, the
choice of which branch to merge into the other matters for (at least) two
reasons: (1) whether the working copy has a directory full of files that
is in the way of a file, or a file exists that is in the way of a
directory of files, (2) when the directory full of files does not disappear
due to the merge, what files at the same paths should be renamed to
(e.g. filename~HEAD vs. filename~otherbranch).
Add some tests that reverse the merge order of two other tests, and which
verify the contents are as expected (namely, that the results are identical
other than modified-for-uniqueness filenames involving branch names).
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t6022: Add test combinations of {content conflict?, D/F conflict remains?}
Add testing of the various ways that a renamed file to a path involved in
a directory/file conflict may be involved in. This includes whether or not
there are conflicts of the contents of the renamed file (if the file was
modified on both sides of history), and whether the directory from the
other side of the merge will disappear as a result of the merge or not.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t6032: Add a test checking for excessive output from merge
Previous D/F fixes I submitted (5a2580d and ae74548) had caused merge to
become excessively spammy, which was fixed in 96ecac6 (merge-recursive:
Avoid excessive output for and reprocessing of renames 2010-08-20). Add a
new test to avoid repeating that mistake with my several upcoming changes.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
merge-recursive: Restructure showing how to chain more process_* functions
In 3734893 (merge-recursive: Fix D/F conflicts 2010-07-09),
process_df_entry() was added to process_renames() and process_entry() but
in a somewhat restrictive manner. Modify the code slightly to make it
clearer how we could chain more such functions if necessary, and alter
process_df_entry() to handle such chaining.
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t3030: Add a testcase for resolvable rename/add conflict with symlinks
d5af510 (RE: [PATCH] Avoid rename/add conflict when contents are identical
2010-09-01) avoided erroring out in a rename/add conflict when the contents
were identical. A simpler fix could have handled that particular testcase,
but it would not correctly handle the case where a symlink is involved.
Add another testcase using symlinks, to avoid breaking that case.
Signed-off-by: Ken Schalk <ken.schalk@intel.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
blame,cat-file --textconv: Don't assume mode is ``S_IFREF | 0664''
We need to get the correct mode when blame reads the source from the
working tree, the index, or trees. This allows us to omit running
textconv filters on symbolic links.
Signed-off-by: Kirill Smelkov <kirr@landau.phys.spbu.ru> Reviewed-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
blame,cat-file: Demonstrate --textconv is wrongly running converter on symlinks
git blame --textconv is wrongly calling the textconv filter on
symlinks: symlinks are stored as blobs whose content is the target of
the link, and blame calls the textconv filter on a temporary file
filled-in with the content of this blob.
For example:
$ git blame -C -C regular-file.pdf
Error: May not be a PDF file (continuing anyway)
Error: PDF file is damaged - attempting to reconstruct xref table...
Error: Couldn't find trailer dictionary
Error: Couldn't read xref table
Warning: program returned non-zero exit code #1
fatal: unable to read files to diff
That errors come from pdftotext run on symlink.pdf being extracted to
/tmp/ with one-line plain-text content pointing to link destination.
So several failures are demonstrated here:
- git cat-file --textconv :symlink.bin # also HEAD:symlink.bin
- git blame --textconv symlink.bin
- git blame -C -C --textconv regular-file # but also looks on symlink.bin
At present they all fail with something like.
E: /tmp/j3ELEs_symlink.bin is not "binary" file
NOTE: git diff doesn't try to textconv the pathnames, it runs the
textual diff without textconv, which is the expected behavior.
Signed-off-by: Kirill Smelkov <kirr@landau.phys.spbu.ru> Reviewed-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
blame,cat-file: Prepare --textconv tests for correctly-failing conversion program
The textconv filter is sometimes incorrectly ran on a temporary file
whose content is the target of a symbolic link, instead of actual file
content. Prepare to test this by marking the content of the file to
convert with "bin:", and let the helper die if "bin:" is not found in
the file content.
NOTE: I've changed $@ to $1 in helper becase textconv program "should
take a single argument" (see Documentation/gitattributes.txt), so
making this more explicit makes sense and also helps to avoid
problems with feeding arguments to echo.
Signed-off-by: Kirill Smelkov <kirr@landau.phys.spbu.ru> Reviewed-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>