Leak fixes.
* ma/bisect-leakfix:
bisect: fix memory leak when returning best element
bisect: fix off-by-one error in `best_bisection_sorted()`
bisect: fix memory leak in `find_bisection()`
bisect: change calling-convention of `find_bisection()`
A fix for an ancient bug in "git apply --ignore-space-change" codepath.
* rs/apply-fuzzy-match-fix:
apply: avoid out-of-bounds access in fuzzy_matchlines()
Doc update around use of "format-patch --subject-prefix" etc.
* ad/submitting-patches-title-decoration:
doc/SubmittingPatches: correct subject guidance
Error checking in "git imap-send" for empty response has been
improved.
* rs/imap-send-next-arg-fix:
imap-send: handle missing response codes gracefully
imap-send: handle NULL return of next_arg()
test_cmp_rev is a useful function that's used in quite a few test
scripts. It is however not documented in t/README. Document it.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We generally no longer include copyright notices in new test scripts.
However t/README still mentions it as something to include at the top of
every new script.
Remove that mention as it's outdated.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Trace key normalization is not used, not strictly necessary,
complicates the code and would negatively affect compilation speed if
moved to header.
New trace_default_key key or existing separate marco could be used
instead of passing NULL as a key.
Signed-off-by: Gennady Kupava <gkupava@bloomberg.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a text file had been commited with CRLF and the file is commited
again, the CRLF are kept if .gitattributs has "text=auto".
This is done by analyzing the content of the blob stored in the index:
If a '\r' is found, Git assumes that the blob was commited with CRLF.
The simple search for a '\r' does not always work as expected:
A file is encoded in UTF-16 with CRLF and commited. Git treats it as binary.
Now the content is converted into UTF-8. At the next commit Git treats the
file as text, the CRLF should be converted into LF, but isn't.
Replace has_cr_in_index() with has_crlf_in_index(). When no '\r' is found,
0 is returned directly, this is the most common case.
If a '\r' is found, the content is analyzed more deeply.
Reported-By: Ashish Negi <ashishnegi33@gmail.com>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In commit ae352c7f3 (merge-recursive.c: fix case-changing merge bug,
2014-05-01), it was observed that removing files could be problematic on
case insensitive file systems, because we could end up removing files
that differed in case only rather than deleting the intended file --
something that happened when files were renamed on one branch in a way
that differed only in case. To avoid that problem, that commit added
logic to avoid removing files other than the one intended, rejecting the
removal if the files differed only in case.
Unfortunately, the logic it used didn't fully implement that condition as
stated above; instead it merely checked that a case-insensitive lookup of
the file that was requested resulted in finding a file in the index at
stage 0, not that the file found in the index actually differed in case.
Alternatively, one could view the implementation as making an implicit
assumption that the file we actually wanted to remove would never appear
in the index with a stage of 0, and thus that if we found a file with our
lookup, that it had to be a different file (but different in case only).
The net result of this implementation is that it can ignore more requests
than it should, leaving a file around in the working copy that should
have been removed. Make sure that the file found in the index actually
differs in case before silently ignoring the request to remove the file.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently 'git worktree add <path> <branch>', errors out when 'branch'
is not a local branch. It has no additional dwim'ing features that one
might expect.
Make it behave more like 'git checkout <branch>' when the branch doesn't
exist locally, but a remote tracking branch uniquely matches the desired
branch name, i.e. create a new branch from the remote tracking branch
and set the upstream to the remote tracking branch.
As 'git worktree add' currently just dies in this situation, there are
no backwards compatibility worries when introducing this feature.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently 'git worktree add' sets up tracking branches if '<branch>' is
a remote tracking branch, and doesn't set them up otherwise, as is the
default for 'git branch'.
This may or may not be what the user wants. Allow overriding this
behaviour with a --[no-]track flag that gets passed through to 'git
branch'.
We already respect branch.autoSetupMerge, as 'git worktree' just calls
'git branch' internally.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently 'git worktree add' is documented to take an optional <branch>
argument, which is checked out in the new worktree. However it is more
generally possible to use a commit-ish as the optional argument, and
check that out into the new worktree.
Document that this is a possibility, as new users of git worktree add
might find it helpful.
Reported-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Factor the functions out, so they can be re-used from other places. In
particular these functions will be re-used in builtin/worktree.c to make
git worktree add dwim more.
While there add some docs to the function.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The message spans over 2 lines but the C concatenation does not add
the needed space between the two lines.
Signed-off-by: Jean-Noel Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix a bug in the compilation of PCRE2 patterns under JIT (the most
common runtime configuration). Any pattern with a (*NO_JIT) verb would
segfault in any currently released PCRE2 version:
$ git grep -P '(*NO_JIT)hi.*there'
Segmentation fault
That this segfaulted was a bug in PCRE2 itself, after reporting it[1]
on pcre-dev it's been fixed in a yet-to-be-released version of
PCRE (presumably released first as 10.31). Now it'll die with:
$ git grep -P '(*NO_JIT)hi.*there'
fatal: pcre2_jit_match failed with error code -45: bad JIT option
But the cause of the bug is in our own code dating back to my
94da9193a6 ("grep: add support for PCRE v2", 2017-06-01).
As explained at more length in the comment being added here, it isn't
sufficient to just check pcre2_config() to see whether the JIT should
be used, pcre2_pattern_info() also has to be asked.
This is something I discovered myself when fiddling around with PCRE2
verbs in patterns passed to git. I don't expect that any user of git
has encountered this given the obscurity of passing PCRE2 verbs
through to the library, along with the relative obscurity of (*NO_JIT)
itself.
1. "How am I supposed to use PCRE2 JIT in the face of (*NO_JIT) ?"
(<CACBZZX5mMqDuWuFmi7sRBp3wH6CFyd-ghACukd=v0NN=rBMnJg@mail.gmail.com> &
https://lists.exim.org/lurker/thread/20171123.101502.7f0d38ca.en.html)
on the pcre-dev mailing list
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add LIBPCRE1 and LIBPCRE2 prerequisites which are true when git is
compiled with USE_LIBPCRE1=YesPlease or USE_LIBPCRE2=YesPlease,
respectively.
The syntax of PCRE1 and PCRE2 isn't the same in all cases (see
pcresyntax(3) and pcre2syntax(3)). If test are added that test for
those they'll need to be guarded by these new prerequisites.
The subsequent patch will make use of LIBPCRE2, so LIBPCRE1 isn't
strictly needed for now, but let's add it for consistency and so that
checking for it doesn't have to be done with the less obvious "PCRE,
!LIBPCRE2", which while semantically the same is more confusing, and
would lead to bugs if PCRE v3 is ever released as the tests would mean
v1, not any non-v2 version.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
`git stash push -m foo` uses "foo" as the message for the stash. But
`git stash push -m"foo"` does not parse successfully. Similarly
`git stash push --message="My stash message"` also fails. The stash
documentation doesn't suggest this syntax should work, but gitcli
does and my fingers have learned this pattern long ago for `commit`.
Teach `git stash` to parse -mFoo and --message=Foo the same as `git
commit` would do. Even though it's an internal function, add
similar support to create_stash() for consistency.
Signed-off-by: Phil Hord <phil.hord@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The text meant to say that receive-pack runs these hooks, and only
because receive-pack is not a command the end users use every day
(ever), as an explanation also meantioned that it is run in response
to 'git push', which is an end-user facing command readers hopefully
know about.
This unfortunately gave an incorrect impression that 'git push'
always result in the hook to run. If the refs push wanted to update
all already had the desired value, these hooks are not run.
Explicitly mention "... and updates reference(s)" as a precondition
to avoid this confusion.
Helped-by: Christoph Michelbach <michelbach94@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Ideally we should only autocomplete if pull has --rebase since
they only work with it but could not figure out how to do that
and the error message of doing git pull --autostash points out
that you need --rebase so i guess it's good enough
Signed-off-by: Albert Astals Cid <albert.astals.cid@kdab.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The code is more understandable with 'if' instead of 'unless'.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function calls itself "required", but it does not die when it
sees an unexpected EOF.
Let's rename it to "packet_key_val_read()".
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Non-determinism makes it harder for build tools to discover when a
target needs to be rebuilt.
generate-cmdlist.sh stores the full path in a comment:
/* Automatically generated by /build/git-agojiD/git-2.15.0/generate-cmdlist.sh */
Use the file name alone instead.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Teach pack-objects to use the filtering provided by the
traverse_commit_list_filtered() interface to omit unwanted
objects from the resulting packfile.
Filtering requires the use of the "--stdout" option.
Add t5317 test.
In the future, we will introduce a "partial clone" mechanism
wherein an object in a repo, obtained from a remote, may
reference a missing object that can be dynamically fetched from
that remote once needed. This "partial clone" mechanism will
have a way, sometimes slow, of determining if a missing link
is one of the links expected to be produced by this mechanism.
This patch introduces handling of missing objects to help
debugging and development of the "partial clone" mechanism,
and once the mechanism is implemented, for a power user to
perform operations that are missing-object aware without
incurring the cost of checking if a missing link is expected.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Teach rev-list to use the filtering provided by the
traverse_commit_list_filtered() interface to omit
unwanted objects from the result.
Object filtering is only allowed when one of the "--objects*"
options are used.
When the "--filter-print-omitted" option is used, the omitted
objects are printed at the end. These are marked with a "~".
This option can be combined with "--quiet" to get a list of
just the omitted objects.
Add t6112 test.
In the future, we will introduce a "partial clone" mechanism
wherein an object in a repo, obtained from a remote, may
reference a missing object that can be dynamically fetched from
that remote once needed. This "partial clone" mechanism will
have a way, sometimes slow, of determining if a missing link
is one of the links expected to be produced by this mechanism.
This patch introduces handling of missing objects to help
debugging and development of the "partial clone" mechanism,
and once the mechanism is implemented, for a power user to
perform operations that are missing-object aware without
incurring the cost of checking if a missing link is expected.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Create traverse_commit_list_filtered() and add filtering
interface to allow certain objects to be omitted from the
traversal.
Update traverse_commit_list() to be a wrapper for the above
with a null filter to minimize the number of callers that
needed to be changed.
Object filtering will be used in a future commit by rev-list
and pack-objects for partial clone and fetch to omit unwanted
objects from the result.
traverse_bitmap_commit_list() does not work with filtering.
If a packfile bitmap is present, it will not be used. It
should be possible to extend such support in the future (at
least to simple filters that do not require object pathnames),
but that is beyond the scope of this patch series.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add the usual iterator methods to oidset.
Add oidset_remove().
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add the usual map iterator functions to oidmap.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Refactor add_excludes() to separate the reading of the
exclude file into a buffer and the parsing of the buffer
into exclude_list items.
Add add_excludes_from_blob_to_list() to allow an exclude
file be specified with an OID without assuming a local
worktree or index exists.
Refactor read_skip_worktree_file_from_index() and add
do_read_blob() to eliminate duplication of preliminary
processing of blob contents.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
auto_mkindex expands wildcards in directory order, which depends on
the underlying filesystem. To improve build reproducibility, sort the
list of *.tcl files in the Makefile.
The unoptimized loading case was previously fixed in gitgui-0.21.0~14
(git-gui: sort entries in tclIndex, 2015-01-26).
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Although `git stash save` was deprecated recently, some parts of the
documentation still refer to it instead of `push`.
Signed-off-by: Phil Hord <phil.hord@gmail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This continues the work in commit d3b5a49 ("Tests: clean up and document
submodule helpers", 2017-11-08).
Factor out the commonalities from
test_submodule_switch_recursing_with_args() and
test_submodule_forced_switch_recursing_with_args() in
lib-submodule-update.sh, and document their usage. Some tests differ
slightly in their test assertions; I have used the superset of those
assertions in that case.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When `log --decorate` is used, git will decorate commits with all
available refs. While in most cases this may give the desired effect,
under some conditions it can lead to excessively verbose output.
Introduce two command line options, `--decorate-refs=<pattern>` and
`--decorate-refs-exclude=<pattern>` to allow the user to select which
refs are used in decoration.
When "--decorate-refs=<pattern>" is given, only the refs that match the
pattern are used in decoration. The refs that match the pattern when
"--decorate-refs-exclude=<pattern>" is given, are never used in
decoration.
These options follow the same convention for mixing negative and
positive patterns across the system, assuming that the inclusive default
is to match all refs available.
(1) if there is no positive pattern given, pretend as if an
inclusive default positive pattern was given;
(2) for each candidate, reject it if it matches no positive
pattern, or if it matches any one of the negative patterns.
The rules for what is considered a match are slightly different from the
rules used elsewhere.
Commands like `log --glob` assume a trailing '/*' when glob chars are
not present in the pattern. This makes it difficult to specify a single
ref. On the other hand, commands like `describe --match --all` allow
specifying exact refs, but do not have the convenience of allowing
"shorthand refs" like 'refs/heads' or 'heads' to refer to
'refs/heads/*'.
The commands introduced in this patch consider a match if:
(a) the pattern contains globs chars,
and regular pattern matching returns a match.
(b) the pattern does not contain glob chars,
and ref '<pattern>' exists, or if ref exists under '<pattern>/'
This allows both behaviours (allowing single refs and shorthand refs)
yet remaining compatible with existent commands.
Helped-by: Kevin Daudt <me@ikke.info>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Rafael Ascensão <rafa.almas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, 'git notes prune' in man page and usage message
incorrectly lists options as '[-n | -v]', rather than '[-n] [-v]'.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add mention of git prune's "--progress" option to the SYNOPSIS and
DESCRIPTION sections of the man page, and to the usage message of "git
prune" itself.
While we're here, move the explanation of "--" toward the end of the
DESCRIPTION section, where it belongs.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While the "git reflog" man page supports both "--dry-run" and "-n" for
a dry run, the man page mentions only the former, not the latter.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In theory nobody should ever ask the low-level object code
for a null sha1. It's used as a sentinel for "no such
object" in lots of places, so leaking through to this level
is a sign that the higher-level code is not being careful
about its error-checking. In practice, though, quite a few
code paths seem to rely on the null sha1 lookup failing as a
way to quietly propagate non-existence (e.g., by feeding it
to lookup_commit_reference_gently(), which then returns
NULL).
When this happens, we do two inefficient things:
1. We actually search for the null sha1 in packs and in
the loose object directory.
2. When we fail to find it, we re-scan the pack directory
in case a simultaneous repack happened to move it from
loose to packed. This can be very expensive if you have
a large number of packs.
Only the second one actually causes noticeable performance
problems, so we could treat them independently. But for the
sake of simplicity (both of code and of reasoning about it),
it makes sense to just declare that the null sha1 cannot be
a real on-disk object, and looking it up will always return
"no such object".
There's no real loss of functionality to do so Its use as a
sentinel value means that anybody who is unlucky enough to
hit the 2^-160th chance of generating an object with that
sha1 is already going to find the object largely unusable.
In an ideal world, we'd simply fix all of the callers to
notice the null sha1 and avoid passing it to us. But a
simple experiment to catch this with a BUG() shows that
there are a large number of code paths that do so.
So in the meantime, let's fix the performance problem by
taking a fast exit from the object lookup when we see a null
sha1. p5551 shows off the improvement (when a fetched ref is
new, the "old" sha1 is 0{40}, which ends up being passed for
fast-forward checks, the status table abbreviations, etc):
Test HEAD^ HEAD
--------------------------------------------------------
5551.4: fetch 5.51(5.03+0.48) 0.17(0.10+0.06) -96.9%
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A fix for an ancient bug in "git apply --ignore-space-change" codepath.
* rs/apply-fuzzy-match-fix:
apply: avoid out-of-bounds access in fuzzy_matchlines()
Doc update around use of "format-patch --subject-prefix" etc.
* ad/submitting-patches-title-decoration:
doc/SubmittingPatches: correct subject guidance
Various fixes to bp/fsmonitor topic.
* av/fsmonitor:
fsmonitor: simplify determining the git worktree under Windows
fsmonitor: store fsmonitor bitmap before splitting index
fsmonitor: read from getcwd(), not the PWD environment variable
fsmonitor: delay updating state until after split index is merged
fsmonitor: document GIT_TRACE_FSMONITOR
fsmonitor: don't bother pretty-printing JSON from watchman
fsmonitor: set the PWD to the top of the working tree
We learned to talk to watchman to speed up "git status" and other
operations that need to see which paths have been modified.
* bp/fsmonitor:
fsmonitor: preserve utf8 filenames in fsmonitor-watchman log
fsmonitor: read entirety of watchman output
fsmonitor: MINGW support for watchman integration
fsmonitor: add a performance test
fsmonitor: add a sample integration script for Watchman
fsmonitor: add test cases for fsmonitor extension
split-index: disable the fsmonitor extension when running the split index test
fsmonitor: add a test tool to dump the index extension
update-index: add fsmonitor support to update-index
ls-files: Add support in ls-files to display the fsmonitor valid bit
fsmonitor: add documentation for the fsmonitor extension.
fsmonitor: teach git to optionally utilize a file system monitor to speed up detecting new or changed files.
update-index: add a new --force-write-index option
preload-index: add override to enable testing preload-index
bswap: add 64 bit endianness helper get_be64
Code cleanup.
* rs/sequencer-rewrite-file-cleanup:
sequencer.c: check return value of close() in rewrite_file()
sequencer: use O_TRUNC to truncate files
sequencer: factor out rewrite_file()
