Subversion generates diffs that can contain lines like this one:
--- /dev/null (nonexistent)
Let's teach Git's apply machinery to handle such a line gracefully.
This fixes https://github.com/git-for-windows/git/isues/1489
Signed-off-by: Tatyana Krasnukha <tatyana@synopsys.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Subversion generates diffs that contain funny ---/+++ lines containing
more than just the file names. Example:
--- a/trunk/README (revision 4711)
+++ /dev/null (nonexistent)
Let's add a test case demonstrating that apply cannot handle the
/dev/null line (although it can handle the trunk/README line just fine).
Reported in https://github.com/git-for-windows/git/issues/1489
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is possible to have the output ' A' from 'git status --porcelain'
by adding a file using the '--intend-to-add' flag. Make this clear by
adding the pattern in the table of the documentation.
However the mode 'DM' (deleted in the index, modified in the working tree)
is not possible in the non-merge case in which the file only shows
as 'D ' (and adding it back to the worktree would show an additional line
of an '??' untracked file). It is also not possible in the merge case as
then the mode involves a 'U' on one side of the merge.
Remove that pattern.
Reported-by: Ross Light <light@google.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since commit 20d2a30f8f (Makefile: replace perl/Makefile.PL with
simple make rules, 2017-12-10), the Git(3pm) man page is only
generated as an indirect dependency of the 'install-doc' and
'install-man' Makefile targets. Consequently, if someone runs 'make
man && sudo make install-man' (or their 'doc' counterparts), then
Git(3pm) will be generated as root, and the resulting root-owned files
and directories will in turn cause the next user-run 'make clean' to
fail. This was not an issue in the past, because Git(3pm) was
generated when 'make all' descended into 'perl/', which is usually not
run as root.
List Git(3pm) as a dependency of the 'doc' and 'man' Makefile targets,
too, so it gets generated by targets that are usually built as
ordinary users.
While at it, add 'install-man-perl' to the list of .PHONY targets.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Acked-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rename C++ keyword in order to bring the codebase closer to being able
to be compiled with a C++ compiler.
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rename C++ keyword in order to bring the codebase closer to being able
to be compiled with a C++ compiler.
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rename C++ keyword in order to bring the codebase closer to being able
to be compiled with a C++ compiler.
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rename C++ keyword in order to bring the codebase closer to being able
to be compiled with a C++ compiler.
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rename C++ keyword in order to bring the codebase closer to being able
to be compiled with a C++ compiler.
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
get_renames() would look up stage data that already existed (populated
in get_unmerged(), taken from whatever unpack_trees() created), and if
it didn't exist, would call insert_stage_data() to create the necessary
entry for the given file. The insert_stage_data() fallback becomes
much more important for directory rename detection, because that creates
a mechanism to have a file in the resulting merge that didn't exist on
either side of history. However, insert_stage_data(), due to calling
get_tree_entry() loaded up trees as readily as files. We aren't
interested in comparing trees to files; the D/F conflict handling is
done elsewhere. This code is just concerned with what entries existed
for a given path on the different sides of the merge, so create a
get_tree_entry_if_blob() helper function and use it.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Before trying to apply directory renames to paths within the given
directories, we want to make sure that there aren't conflicts at the
file level either. If there aren't any, then get the new name from
any directory renames.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
directory renaming and merging can cause one or more files to be moved to
where an existing file is, or to cause several files to all be moved to
the same (otherwise vacant) location. Add checking and reporting for such
cases, falling back to no-directory-rename handling for such paths.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Before trying to apply directory renames to paths within the given
directories, we want to make sure that there aren't conflicts at the
directory level. There will be additional checks at the individual
file level too, which will be added later.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This populates a set of directory renames for us. The set of directory
renames is not yet used, but will be in subsequent commits.
Note that the use of a string_list for possible_new_dirs in the new
dir_rename_entry struct implies an O(n^2) algorithm; however, in practice
I expect the number of distinct directories that files were renamed into
from a single original directory to be O(1). My guess is that n has a
mode of 1 and a mean of less than 2, so, for now, string_list seems good
enough for possible_new_dirs.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In anticipation of more involved cleanup to come, make a helper function
for doing the cleanup at the end of handle_renames. Rename the already
existing cleanup_rename[s]() to final_cleanup_rename[s](), name the new
helper initial_cleanup_rename(), and leave the big comment in the code
about why we can't do all the cleanup at once.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Create a new function, get_diffpairs() to compute the diff_filepairs
between two trees. While these are currently only used in
get_renames(), I want them to be available to some new functions. No
actual logic changes yet.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Previously, if !o->detect_rename then get_renames() would return an
empty string_list, and then process_renames() would have nothing to
iterate over. It seems more straightforward to simply avoid calling
either function in that case.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
get_renames() has always zero'ed out diff_queued_diff.nr while only
manually free'ing diff_filepairs that did not correspond to renames.
Further, it allocated struct renames that were tucked away in the
return string_list. Make sure all of these are deallocated when we
are done with them.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The amount of logic in merge_trees() relative to renames was just a few
lines, but split it out into new handle_renames() and cleanup_renames()
functions to prepare for additional logic to be added to each. No code or
logic changes, just a new place to put stuff for when the rename detection
gains additional checks.
Note that process_renames() records pointers to various information (such
as diff_filepairs) into rename_conflict_info structs. Even though the
rename string_lists are not directly used once handle_renames() completes,
we should not immediately free the lists at the end of that function
because they store the information referenced in the rename_conflict_info,
which is used later in process_entry(). Thus the reason for a separate
cleanup_renames().
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move this function so it can re-use some others (without either
moving all of them or adding an annoying split between function
declarations and definitions). Cheat slightly by adding a blank line
for readability, and in order to silence checkpatch.pl.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I came up with the testcases in the first eight sections before coding up
the implementation. The testcases in this section were mostly ones I
thought of while coding/debugging, and which I was too lazy to insert
into the previous sections because I didn't want to re-label with all the
testcase references. :-)
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a long note about why we are not considering "partial directory
renames" for the current directory rename detection implementation.
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are a small number of misspellings, ".gitmodule", scattered
throughout the code base, correct them ... no apparent functional
changes.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Among the "in progress" commands, only git-am and git-merge do not
support --quit. Support --quit in git-am too.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This fixes a (probably harmless) parsing problem in
sq_dequote_step(), in which we parse some bogus input
incorrectly rather than complaining that it's bogus.
Our shell-dequoting function is very strict: it can unquote
everything generated by sq_quote(), but not arbitrary
strings. In particular, it only allows characters outside of
the single-quoted string if they are immediately backslashed
and then the single-quoted string is resumed. So:
'foo'\''bar'
is OK. But these are not:
'foo'\'bar
'foo'\'
'foo'\'\''bar'
even though they are all valid shell. The parser has a funny
corner case here. When we see a backslashed character, we
keep incrementing the "src" pointer as we parse it. For a
single sq_dequote() call, that's OK; our next step is to
bail with an error, and we don't care where "src" points.
But if we're parsing multiple strings with sq_dequote_to_argv(),
then our next step is to see if the string is followed by
whitespace. Because we erroneously incremented the "src"
pointer, we don't barf on the bogus backslash that we
skipped. Instead, we may find whitespace that immediately
follows it, and continue as if all is well (skipping the
backslashed character completely!).
In practice, this shouldn't be a big deal. The input is
bogus, and our sq_quote() would never generate this bogus
input. In all but one callers, we are parsing input created
by an earlier call to sq_quote(). That final case is "git
shell", which parses shell-quoting generated by the client.
And in that case we use the singular sq_quote(), which has
always behaved correctly.
One might also wonder if you could provoke a read past the
end of the string. But the answer is no; we still parse
character by character, and would never advance past a NUL.
This patch implements the minimal fix, along with
documenting the restriction (which confused at least me
while reading the code). We should possibly consider
being more liberal in accepting valid shell-quoted words. I
suspect the code may actually be simpler, and it would be
more friendly to anybody generating or editing input by
hand. But I wanted to fix just the immediate bug in this
patch.
We don't have a direct way to unit-test the sq_dequote()
functions, but we can do this by feeding input to
GIT_CONFIG_PARAMETERS (which is not normally a user-facing
interface, but serves here as it expects to see sq_quote()
input from "git -c"). I've included both a bogus example,
and a related "good" one to confirm that we still parse it
correctly.
Noticed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The hashmap API always use an unsigned value for storing
and comparing hashes. Whereas this test code uses "int".
This works out in practice since one can typically
round-trip between "int" and "unsigned int". But since this
is essentially reference code for the hashmap API, we should
model using the correct types.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This function takes two ptr/len pairs, which implies that
they can be arbitrary buffers. But internally, it assumes
that each "ptr" is NUL-terminated at "len" (because we
memcpy an extra byte to pick up the NUL terminator).
In practice this works because each caller only ever passes
strlen(ptr) as the length. But let's drop the "len"
parameters to make our expectations clear.
Note that we can get rid of the "l1" and "l2" variables from
cmd_main() as a further cleanup, since they are now mostly
used to check whether the p1 and p2 arguments are present
(technically the length parameters conflated NULL with the
empty string, which we no longer do, but I think that is
actually an improvement).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Using fgets() with a fixed-size buffer can lead to lines
being accidentally split across two calls if they are larger
than the buffer size.
As this is just a test helper, this is unlikely to be a
problem in practice. But since people may look at test
helpers as reference code, it's a good idea for them to
model the preferred behavior.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In general, using a bare snprintf can truncate the resulting
buffer, leading to confusing results. In this case we know
that our buffer is sized large enough to accommodate our
loop, so there's no bug. However, we should use xsnprintf()
to document (and check) that assumption, and to model good
practice to people reading the code.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we allocate the test_entry flex-struct, we have to add
up all of the elements that go into the flex array. If these
were to overflow a size_t, this would allocate a too-small
buffer, which we would then overflow in our memcpy steps.
Since this is just a test-helper, it probably doesn't matter
in practice, but we should model the correct technique by
using the st_add() macros.
Unfortunately, we cannot use the FLEX_ALLOC() macros here,
because we are stuffing two different buffers into a single
flex array.
While we're here, let's also swap out "malloc" for our
error-checking "xmalloc", and use the preferred
"sizeof(*var)" instead of "sizeof(type)".
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These two array allocations have several minor flaws:
- they use bare malloc, rather than our error-checking
xmalloc
- they do a bare multiplication to determine the total
size (which in theory can overflow, though in this case
the sizes are all constants)
- they use sizeof(type), but the type in the second one
doesn't match the actual array (though it's "int" versus
"unsigned int", which are guaranteed by C99 to have the
same size)
None of these are likely to be problems in practice, and
this is just a test helper. But since people often look at
test helpers as reference code, we should do our best to
model the recommended techniques.
Switching to ALLOC_ARRAY fixes all three.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the reference to setting core.fsmonitor to `true` (or `false`) as those
are not valid settings.
Signed-off-by: Ben Peart <benpeart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Travis updates.
* sg/travis-linux32-sanity:
travis-ci: don't fail if user already exists on 32 bit Linux build job
travis-ci: don't run the test suite as root in the 32 bit Linux build
travis-ci: don't repeat the path of the cache directory
travis-ci: use 'set -e' in the 32 bit Linux build job
travis-ci: use 'set -x' for the commands under 'su' in the 32 bit Linux build
The sequencer infrastructure is shared across "git cherry-pick",
"git rebase -i", etc., and has always spawned "git commit" when it
needs to create a commit. It has been taught to do so internally,
when able, by reusing the codepath "git commit" itself uses, which
gives performance boost for a few tens of percents in some sample
scenarios.
* pw/sequencer-in-process-commit:
sequencer: run 'prepare-commit-msg' hook
t7505: add tests for cherry-pick and rebase -i/-p
t7505: style fixes
sequencer: assign only free()able strings to gpg_sign
sequencer: improve config handling
t3512/t3513: remove KNOWN_FAILURE_CHERRY_PICK_SEES_EMPTY_COMMIT=1
sequencer: try to commit without forking 'git commit'
sequencer: load commit related config
sequencer: simplify adding Signed-off-by: trailer
commit: move print_commit_summary() to libgit
commit: move post-rewrite code to libgit
Add a function to update HEAD after creating a commit
commit: move empty message checks to libgit
t3404: check intermediate squash messages
Completion of "git merge -s<strategy>" (in contrib/) did not work
well in non-C locale.
* nd/list-merge-strategy:
completion: fix completing merge strategies on non-C locales
