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The error "not tracking: ambiguous information for ref" is raised
when we are evaluating what tracking information to set on a branch,
and find that the ref to be added as tracking branch is mapped
under multiple remotes' fetch refspecs.
This can easily happen when a user copy-pastes a remote definition
in their git config, and forgets to change the tracking path.
Add advice in this situation, explicitly highlighting which remotes
are involved and suggesting how to correct the situation. Also
update a test to explicitly expect that advice.
Signed-off-by: Tao Klerks <tao@klerks.biz>
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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When "git fetch --recurse-submodules" grabbed submodule commits
that would be needed to recursively check out newly fetched commits
in the superproject, it only paid attention to submodules that are
in the current checkout of the superproject. We now do so for all
submodules that have been run "git submodule init" on.
* gc/recursive-fetch-with-unused-submodules:
submodule: fix latent check_has_commit() bug
fetch: fetch unpopulated, changed submodules
submodule: move logic into fetch_task_create()
submodule: extract get_fetch_task()
submodule: store new submodule commits oid_array in a struct
submodule: inline submodule_commits() into caller
submodule: make static functions read submodules from commits
t5526: create superproject commits with test helper
t5526: stop asserting on stderr literally
t5526: introduce test helper to assert on fetches
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Updates to refs traditionally weren't fsync'ed, but we can
configure using core.fsync variable to do so.
* ps/fsync-refs:
core.fsync: new option to harden references
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Replace core.fsyncObjectFiles with two new configuration variables,
core.fsync and core.fsyncMethod.
* ns/core-fsyncmethod:
core.fsync: documentation and user-friendly aggregate options
core.fsync: new option to harden the index
core.fsync: add configuration parsing
core.fsync: introduce granular fsync control infrastructure
core.fsyncmethod: add writeout-only mode
wrapper: make inclusion of Windows csprng header tightly scoped
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Double-free fix for a recently merged topic.
* ab/plug-random-leaks:
diff.c: fix a double-free regression in a18d66cefb
tests: demonstrate "show --word-diff --color-moved" regression
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The command line completion support (in contrib/) learns to give
modified paths to the "git restore" command.
* dc/complete-restore:
completion: tab completion of filenames for 'git restore'
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Optimize away strbuf_expand() call with a hardcoded formatting logic
specific for the default format in the --batch and --batch-check
options of "git cat-file".
* jc/cat-file-batch-default-format-optim:
cat-file: skip expanding default format
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Code clean-up.
* js/in-place-reverse-in-sequencer:
sequencer: use reverse_commit_list() helper
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A new test to ensure a lazy fetching is not triggered when it
should not be.
* ac/test-lazy-fetch:
partial-clone: add a partial-clone test case
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"git repack" learned a new configuration to disable triggering of
age-old "update-server-info" command, which is rarely useful these
days.
* ps/repack-with-server-info:
repack: add config to skip updating server info
repack: refactor to avoid double-negation of update-server-info
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Doc update.
* ds/doc-maintenance-synopsis-fix:
maintenance: fix synopsis in documentation
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Regression fix.
* ab/reflog-prep-fix:
reflog: don't be noisy on empty reflogs
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Code clean-up.
* ep/remove-duplicated-includes:
attr.h: remove duplicate struct definition
t/helper/test-run-command.c: delete duplicate include
builtin/stash.c: delete duplicate include
builtin/sparse-checkout.c: delete duplicate include
builtin/gc.c: delete duplicate include
attr.c: delete duplicate include
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Code clean-up.
* ep/t6423-modernize:
t6423-merge-rename-directories.sh: use the $(...) construct
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"git name-rev" learned to use the generation numbers when setting
the lower bound of searching commits used to explain the revision,
when available, instead of committer time.
* jk/name-rev-w-genno:
name-rev: use generation numbers if available
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A new built-in userdiff driver for kotlin.
* jd/userdiff-kotlin:
userdiff: add builtin diff driver for kotlin language.
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Get rid of one use of __asm__() GCC extension that does not help us
much these days, which has an added advantage of not having to
worry about -pedantic complaining.
* bc/block-sha1-without-gcc-asm-extension:
block-sha1: remove use of obsolete x86 assembly
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Rewrite of "git submodule update" in C (early part).
* gc/submodule-update-part1:
submodule--helper update-clone: check for --filter and --init
submodule update: add tests for --filter
submodule--helper: remove ensure-core-worktree
submodule--helper update-clone: learn --init
submodule--helper: allow setting superprefix for init_submodule()
submodule--helper: refactor get_submodule_displaypath()
submodule--helper run-update-procedure: learn --remote
submodule--helper: don't use bitfield indirection for parse_options()
submodule--helper: get remote names from any repository
submodule--helper run-update-procedure: remove --suboid
submodule--helper: reorganize code for sh to C conversion
submodule--helper: remove update-module-mode
submodule tests: test for init and update failure output
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Remove unneeded <meta http-equiv=content-type...> from gitweb
output.
* jy/gitweb-no-need-for-meta:
gitweb: remove invalid http-equiv="content-type"
comment: fix typo
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The single-key interactive operation used by "git add -p" has been
made more robust.
* pw/single-key-interactive:
add -p: disable stdin buffering when interactive.singlekey is set
terminal: set VMIN and VTIME in non-canonical mode
terminal: pop signal handler when terminal is restored
terminal: always reset terminal when reading without echo
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Bundle file format gets extended to allow a partial bundle,
filtered by similar criteria you would give when making a
partial/lazy clone.
* ds/partial-bundles:
clone: fail gracefully when cloning filtered bundle
bundle: unbundle promisor packs
bundle: create filtered bundles
rev-list: move --filter parsing into revision.c
bundle: parse filter capability
list-objects: handle NULL function pointers
MyFirstObjectWalk: update recommended usage
list-objects: consolidate traverse_commit_list[_filtered]
pack-bitmap: drop filter in prepare_bitmap_walk()
pack-objects: use rev.filter when possible
revision: put object filter into struct rev_info
list-objects-filter-options: create copy helper
index-pack: document and test the --promisor option
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The method to trigger malloc check used in our tests no longer work
with newer versions of glibc.
* ep/test-malloc-check-with-glibc-2.34:
test-lib: declare local variables as local
test-lib.sh: Use GLIBC_TUNABLES instead of MALLOC_CHECK_ on glibc >= 2.34
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Test fixes.
* sm/no-git-in-upstream-of-pipe-in-tests:
t0030-t0050: avoid pipes with Git on LHS
t0001-t0028: avoid pipes with Git on LHS
t0003: avoid pipes with Git on LHS
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My a18d66cefb9 (diff.c: free "buf" in diff_words_flush(), 2022-03-04)
has what it retrospect is a rather obvious bug (I don't know what I
was thinking, if it all): We use the "emitted_symbols" allocation in
append_emitted_diff_symbol() N times, but starting with a18d66cefb9
we'd free it after its first use!
The correct way to free this data would have been to add the free() to
the existing free_diff_words_data() function, so let's do that. The
"ecbdata->diff_words->opt->emitted_symbols" might be NULL, so let's
add a trivial free_emitted_diff_symbols() helper next to the function
that appends to it.
This fixes the "no effect on show from" leak tested for in the
preceding commit. Perhaps confusingly this change will skip that test
under SANITIZE=leak, but otherwise opt-in the
"t4015-diff-whitespace.sh" test.
The reason is that a18d66cefb9 "fixed" the leak in the preceding "no
effect on diff" test, but for the first call to diff_words_flush() the
"wol->buf" would be NULL, so we wouldn't double-free (and
SANITIZE=address would see nothing amiss). With this change we'll
still pass that test, showing that we've also fixed leaks on this
codepath.
We then have to skip the new "no effect on show" test because it
happens to trip over an unrelated memory leak (in revision.c). The
same goes for "move detection with submodules". Both of them pass with
SANITIZE=address though, which would error on the "no effect on show"
test before this change.
Reported-by: Michael J Gruber <git@grubix.eu>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a failing test which demonstrates a regression in
a18d66cefb ("diff.c: free "buf" in diff_words_flush()", 2022-03-04),
the regression is discussed in detail in the subsequent commit. With
it running `git show --word-diff --color-moved` with SANITIZE=address
would emit:
==31191==ERROR: AddressSanitizer: attempting double-free on 0x617000021100 in thread T0:
#0 0x49f0a2 in free (git+0x49f0a2)
#1 0x9b0e4d in diff_words_flush diff.c:2153:3
#2 0x9aed5d in fn_out_consume diff.c:2354:3
#3 0xe092ab in consume_one xdiff-interface.c:43:9
#4 0xe072eb in xdiff_outf xdiff-interface.c:76:10
#5 0xec7014 in xdl_emit_diffrec xdiff/xutils.c:53:6
[...]
0x617000021100 is located 0 bytes inside of 768-byte region [0x617000021100,0x617000021400)
freed by thread T0 here:
#0 0x49f0a2 in free (git+0x49f0a2)
[...(same stacktrace)...]
previously allocated by thread T0 here:
#0 0x49f603 in __interceptor_realloc (git+0x49f603)
#1 0xde4da4 in xrealloc wrapper.c:126:8
#2 0x995dc5 in append_emitted_diff_symbol diff.c:794:2
#3 0x96c44a in emit_diff_symbol diff.c:1527:3
[...]
This was not caught by the test suite because we test `diff
--word-diff --color-moved` only so far.
Therefore, add a test for `show`, too.
Signed-off-by: Michael J Gruber <git@grubix.eu>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
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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Count string_list items in size_t, not "unsigned int".
* ab/string-list-count-in-size-t:
string-list API: change "nr" and "alloc" to "size_t"
gettext API users: don't explicitly cast ngettext()'s "n"
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Code clean-up to allow callers of run_commit_hook() to learn if it
got "success" because the hook succeeded or because there wasn't
any hook.
* ab/racy-hooks:
hooks: fix an obscure TOCTOU "did we just run a hook?" race
merge: don't run post-hook logic on --no-verify
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Updates tests around the use of "test $(git cmd) = constant".
* ab/keep-git-exit-codes-in-tests:
rev-list simplify tests: don't ignore "git" exit code
checkout tests: don't ignore "git <cmd>" exit code
apply tests: don't ignore "git ls-files" exit code, drop sub-shell
gettext tests: don't ignore "test-tool regex" exit code
rev-list tests: don't hide abort() in "test_expect_failure"
diff tests: don't ignore "git rev-list" exit code
notes tests: don't ignore "git" exit code
rev-parse tests: don't ignore "git reflog" exit code
merge tests: use "test_must_fail" instead of ad-hoc pattern
apply tests: use "test_must_fail" instead of ad-hoc pattern
diff tests: don't ignore "git diff" exit code in "read" loop
diff tests: don't ignore "git diff" exit code
read-tree tests: check "diff-files" exit code on failure
tests: use "test_stdout_line_count", not "test $(git [...] | wc -l)"
tests: change some 'test $(git) = "x"' to test_cmp
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Teach "test-chmtime" to work on a directory and use it to avoid
having to wait for a second in a few places in tests.
* tk/t7063-chmtime-dirs-too:
t7063: mtime-mangling instead of delays in untracked cache testing
t/helper/test-chmtime: update mingw to support chmtime on directories
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Fixes to the way generation number v2 in the commit-graph files are
(not) handled.
* ds/commit-graph-gen-v2-fixes:
commit-graph: declare bankruptcy on GDAT chunks
commit-graph: fix generation number v2 overflow values
commit-graph: start parsing generation v2 (again)
commit-graph: fix ordering bug in generation numbers
t5318: extract helpers to lib-commit-graph.sh
test-read-graph: include extra post-parse info
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"git stash drop" is reimplemented as an internal call to
reflog_delete() function, instead of invoking "git reflog delete"
via run_command() API.
* jc/stash-drop:
stash: call reflog_delete() in reflog.c
reflog: libify delete reflog function and helpers
stash: add tests to ensure reflog --rewrite --updatref behavior
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"git remote rename A B", depending on the number of remote-tracking
refs involved, takes long time renaming them. The command has been
taught to show progress bar while making the user wait.
* tb/rename-remote-progress:
builtin/remote.c: show progress when renaming remote references
builtin/remote.c: parse options in 'rename'
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"git read-tree" has been made to be aware of the sparse-index
feature.
* vd/sparse-read-tree:
read-tree: make three-way merge sparse-aware
read-tree: make two-way merge sparse-aware
read-tree: narrow scope of index expansion for '--prefix'
read-tree: integrate with sparse index
read-tree: expand sparse checkout test coverage
read-tree: explicitly disallow prefixes with a leading '/'
status: fix nested sparse directory diff in sparse index
sparse-index: prevent repo root from becoming sparse
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Object-file API shuffling.
* ab/object-file-api-updates:
object-file API: pass an enum to read_object_with_reference()
object-file.c: add a literal version of write_object_file_prepare()
object-file API: have hash_object_file() take "enum object_type"
object API: rename hash_object_file_literally() to write_*()
object-file API: split up and simplify check_object_signature()
object API users + docs: check <0, not !0 with check_object_signature()
object API docs: move check_object_signature() docs to cache.h
object API: correct "buf" v.s. "map" mismatch in *.c and *.h
object-file API: have write_object_file() take "enum object_type"
object-file API: add a format_object_header() function
object-file API: return "void", not "int" from hash_object_file()
object-file.c: split up declaration of unrelated variables
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"git config -h" did not describe the "--type" option correctly.
* mf/fix-type-in-config-h:
config: correct "--type" option in "git config -h" output
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Various optimization for "git fetch".
* ps/fetch-mirror-optim:
refs/files-backend: optimize reading of symbolic refs
remote: read symbolic refs via `refs_read_symbolic_ref()`
refs: add ability for backends to special-case reading of symbolic refs
fetch: avoid lookup of commits when not appending to FETCH_HEAD
upload-pack: look up "want" lines via commit-graph
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The untracked cache newly computed weren't written back to the
on-disk index file when there is no other change to the index,
which has been corrected.
* tk/empty-untracked-cache:
untracked-cache: write index when populating empty untracked cache
t7519: populate untracked cache before test
t7519: avoid file to index mtime race for untracked cache
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Test fix-up for a topic already in master.
* ab/grep-patterntype:
log tests: fix "abort tests early" regression in ff37a60c369
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When check_has_commit() is called on a missing submodule, initialization
of the struct repository fails, but it attempts to clear the struct
anyway (which is a fatal error). This bug is masked by its only caller,
submodule_has_commits(), first calling add_submodule_odb(). The latter
fails if the submodule does not exist, making submodule_has_commits()
exit early and not invoke check_has_commit().
Fix this bug, and because calling add_submodule_odb() is no longer
necessary as of 13a2f620b2 (submodule: pass repo to
check_has_commit(), 2021-10-08), remove that call too.
This is the last caller of add_submodule_odb(), so remove that
function. (Submodule ODBs are still added as alternates via
add_submodule_odb_by_path().)
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git fetch --recurse-submodules" only considers populated
submodules (i.e. submodules that can be found by iterating the index),
which makes "git fetch" behave differently based on which commit is
checked out. As a result, even if the user has initialized all submodules
correctly, they may not fetch the necessary submodule commits, and
commands like "git checkout --recurse-submodules" might fail.
Teach "git fetch" to fetch cloned, changed submodules regardless of
whether they are populated. This is in addition to the current behavior
of fetching populated submodules (which is always attempted regardless
of what was fetched in the superproject, or even if nothing was fetched
in the superproject).
A submodule may be encountered multiple times (via the list of
populated submodules or via the list of changed submodules). When this
happens, "git fetch" only reads the 'populated copy' and ignores the
'changed copy'. Amend the verify_fetch_result() test helper so that we
can assert on which 'copy' is being read.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In a blobless-cloned repo, `git log --follow -- <path>` (`<path>` have
an exact OID rename) shouldn't download blob of the file from where the
new file is renamed.
Add a test case to verify it.
Signed-off-by: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Instead of creating a new allocation, reverse the original list
in-place by calling the reverse_commit_list() helper.
The original code discards the list "bases" after storing its
reverse copy in a newly created list "reversed". If the code that
followed from here used both "bases" and "reversed", the
modification would not have worked, but since the original list
"bases" gets discarded, we can simply reverse "bases" in-place with
the reverse_commit_list() helper and reuse the same variable in the
code that follows.
builtin/merge.c has been left unmodified, since in its case, the
original list is needed separately from its reverse copy by the
code.
Signed-off-by: Jayati Shrivastava <gaurijove@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If no --args are present after 'git restore', it assumes that you
want to tab-complete one of the files with unstaged uncommitted
changes.
If a file has been staged, we don't want to list it, as restoring those
requires a slightly more complex `git restore --staged`, so we only list
those files that are --modified. While --committable also looks like
a good candidate, that includes changes that have been staged.
Signed-off-by: David Cantrell <david@cantrell.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When writing both loose and packed references to disk we first create a
lockfile, write the updated values into that lockfile, and on commit we
rename the file into place. According to filesystem developers, this
behaviour is broken because applications should always sync data to disk
before doing the final rename to ensure data consistency [1][2][3]. If
applications fail to do this correctly, a hard crash of the machine can
easily result in corrupted on-disk data.
This kind of corruption can in fact be easily observed with Git when the
machine hard-resets shortly after writing references to disk. On
machines with ext4, this will likely lead to the "empty files" problem:
the file has been renamed, but its data has not been synced to disk. The
result is that the reference is corrupt, and in the worst case this can
lead to data loss.
Implement a new option to harden references so that users and admins can
avoid this scenario by syncing locked loose and packed references to
disk before we rename them into place.
[1]: https://thunk.org/tytso/blog/2009/03/15/dont-fear-the-fsync/
[2]: https://btrfs.wiki.kernel.org/index.php/FAQ (What are the crash guarantees of overwrite-by-rename)
[3]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/admin-guide/ext4.rst (see auto_da_alloc)
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ns/core-fsyncmethod:
core.fsync: documentation and user-friendly aggregate options
core.fsync: new option to harden the index
core.fsync: add configuration parsing
core.fsync: introduce granular fsync control infrastructure
core.fsyncmethod: add writeout-only mode
wrapper: make inclusion of Windows csprng header tightly scoped
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This commit adds aggregate options for the core.fsync setting that are
more user-friendly. These options are specified in terms of 'levels of
safety', indicating which Git operations are considered to be sync
points for durability.
The new documentation is also included here in its entirety for ease of
review.
Signed-off-by: Neeraj Singh <neerajsi@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Tao Klerks
Junio C Hamano
Ævar Arnfjörð Bjarmason
Michael J Gruber
Glen Choo
Abhradeep Chakraborty
Jayati Shrivastava
David Cantrell
Patrick Steinhardt
Neeraj Singh