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Rewrite of the remaining "rebase -i" machinery in C.
* ag/rebase-i-in-c:
rebase -i: move rebase--helper modes to rebase--interactive
rebase -i: remove git-rebase--interactive.sh
rebase--interactive2: rewrite the submodes of interactive rebase in C
rebase -i: implement the main part of interactive rebase as a builtin
rebase -i: rewrite init_basic_state() in C
rebase -i: rewrite write_basic_state() in C
rebase -i: rewrite the rest of init_revisions_and_shortrevisions() in C
rebase -i: implement the logic to initialize $revisions in C
rebase -i: remove unused modes and functions
rebase -i: rewrite complete_action() in C
t3404: todo list with commented-out commands only aborts
sequencer: change the way skip_unnecessary_picks() returns its result
sequencer: refactor append_todo_help() to write its message to a buffer
rebase -i: rewrite checkout_onto() in C
rebase -i: rewrite setup_reflog_action() in C
sequencer: add a new function to silence a command, except if it fails
rebase -i: rewrite the edit-todo functionality in C
editor: add a function to launch the sequence editor
rebase -i: rewrite append_todo_help() in C
sequencer: make three functions and an enum from sequencer.c public
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Rewrite of the "rebase" machinery in C.
* pk/rebase-in-c:
builtin/rebase: support running "git rebase <upstream>"
rebase: refactor common shell functions into their own file
rebase: start implementing it as a builtin
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An experiment to fuzz test a few areas, hopefully we can gain more
coverage to various areas.
* js/fuzzer:
fuzz: add fuzz testing for packfile indices.
fuzz: add basic fuzz testing target.
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Some environment variables that control the runtime options of Git
used during tests are getting renamed for consistency.
* bp/rename-test-env-var:
t0000: do not get self-test disrupted by environment warnings
preload-index: update GIT_FORCE_PRELOAD_TEST support
read-cache: update TEST_GIT_INDEX_VERSION support
fsmonitor: update GIT_TEST_FSMONITOR support
preload-index: use git_env_bool() not getenv() for customization
t/README: correct spelling of "uncommon"
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Header files clean-up.
* rj/header-check:
delta-islands.h: add missing forward declarations (hdr-check)
midx.h: add missing forward declarations (hdr-check)
refs/refs-internal.h: add missing declarations (hdr-check)
refs/packed-backend.h: add missing declaration (hdr-check)
refs/ref-cache.h: add missing declarations (hdr-check)
ewah/ewok_rlw.h: add missing include (hdr-check)
json-writer.h: add missing include (hdr-check)
Makefile: add a hdr-check target
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Breaks the majority of check_packed_git_idx() into a separate function,
load_idx(). The latter function operates on arbitrary buffers, which
makes it suitable as a fuzzing test target.
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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fuzz-pack-headers.c provides a fuzzing entry point compatible with
libFuzzer (and possibly other fuzzing engines).
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Test helper binaries clean-up.
* nd/test-tool:
Makefile: add a hint about TEST_BUILTINS_OBJS
t/helper: merge test-dump-fsmonitor into test-tool
t/helper: merge test-parse-options into test-tool
t/helper: merge test-pkt-line into test-tool
t/helper: merge test-dump-untracked-cache into test-tool
t/helper: keep test-tool command list sorted
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This moves the rebase--helper modes still used by
git-rebase--preserve-merges.sh (`--shorten-ids`, `--expand-ids`,
`--check-todo-list`, `--rearrange-squash` and `--add-exec-commands`) to
rebase--interactive.c.
git-rebase--preserve-merges.sh is modified accordingly, and
rebase--helper.c is removed as it is useless now.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This removes git-rebase--interactive.sh, as its functionnality has been
replaced by git-rebase--interactive2.
git-rebase--interactive2.c is then renamed to git-rebase--interactive.c.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This rewrites the part of interactive rebase which initializes the
basic state, make the script and complete the action, as a buitin, named
git-rebase--interactive2 for now. Others modes (`--continue`,
`--edit-todo`, etc.) will be rewritten in the next commit.
git-rebase--interactive.sh is modified to call git-rebase--interactive2
instead of git-rebase--helper.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Rename TEST_GIT_INDEX_VERSION to GIT_TEST_INDEX_VERSION for consistency with
the other GIT_TEST_ special setups and properly document its use.
Add logic in t/test-lib.sh to give a warning when the old variable is set to
let people know they need to update their environment to use the new
variable.
Signed-off-by: Ben Peart <Ben.Peart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Further fix for O_APPEND emulation on Windows
* js/mingw-o-append:
mingw: fix mingw_open_append to work with named pipes
t0051: test GIT_TRACE to a windows named pipe
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Commit ef3ca95475 ("Add missing includes and forward declarations",
2018-08-15) resulted from the author employing a manual method to
create a C file consisting of a pair of pre-processor #include
lines (for 'git-compat-util.h' and a given toplevel header), and
fixing any resulting compiler errors or warnings.
Add a Makefile target to automate this process. This implementation
relies on the '-include' and '-xc' arguments to the 'gcc' and 'clang'
compilers, which allows us to effectively create the required C
compilation unit on-the-fly. This limits the portability of this
solution to those systems which have such a compiler.
The new 'hdr-check' target can be used to check most header files in
the project (for various reasons, the 'compat' and 'xdiff' directories
are not included). Also, note that individual header files can be
checked directly using the '.hco' extension (read: Hdr-Check Object)
like so:
$ make config.hco
HDR config.h
$
Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git format-patch" learned a new "--interdiff" option to explain
the difference between this version and the previous atttempt in
the cover letter (or after the tree-dashes as a comment).
* es/format-patch-interdiff:
format-patch: allow --interdiff to apply to a lone-patch
log-tree: show_log: make commentary block delimiting reusable
interdiff: teach show_interdiff() to indent interdiff
format-patch: teach --interdiff to respect -v/--reroll-count
format-patch: add --interdiff option to embed diff in cover letter
format-patch: allow additional generated content in make_cover_letter()
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Lift code from GitHub to restrict delta computation so that an
object that exists in one fork is not made into a delta against
another object that does not appear in the same forked repository.
* cc/delta-islands:
pack-objects: move 'layer' into 'struct packing_data'
pack-objects: move tree_depth into 'struct packing_data'
t5320: tests for delta islands
repack: add delta-islands support
pack-objects: add delta-islands support
pack-objects: refactor code into compute_layer_order()
Add delta-islands.{c,h}
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The code for computing history reachability has been shuffled,
obtained a bunch of new tests to cover them, and then being
improved.
* ds/reachable:
commit-reach: correct accidental #include of C file
commit-reach: use can_all_from_reach
commit-reach: make can_all_from_reach... linear
commit-reach: replace ref_newer logic
test-reach: test commit_contains
test-reach: test can_all_from_reach_with_flags
test-reach: test reduce_heads
test-reach: test get_merge_bases_many
test-reach: test is_descendant_of
test-reach: test in_merge_bases
test-reach: create new test tool for ref_newer
commit-reach: move can_all_from_reach_with_flags
upload-pack: generalize commit date cutoff
upload-pack: refactor ok_to_give_up()
upload-pack: make reachable() more generic
commit-reach: move commit_contains from ref-filter
commit-reach: move ref_newer from remote.c
commit.h: remove method declarations
commit-reach: move walk methods from commit.c
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When there are too many packfiles in a repository (which is not
recommended), looking up an object in these would require
consulting many pack .idx files; a new mechanism to have a single
file that consolidates all of these .idx files is introduced.
* ds/multi-pack-index: (32 commits)
pack-objects: consider packs in multi-pack-index
midx: test a few commands that use get_all_packs
treewide: use get_all_packs
packfile: add all_packs list
midx: fix bug that skips midx with alternates
midx: stop reporting garbage
midx: mark bad packed objects
multi-pack-index: store local property
multi-pack-index: provide more helpful usage info
midx: clear midx on repack
packfile: skip loading index if in multi-pack-index
midx: prevent duplicate packfile loads
midx: use midx in approximate_object_count
midx: use existing midx when writing new one
midx: use midx in abbreviation calculations
midx: read objects from multi-pack-index
config: create core.multiPackIndex setting
midx: write object offsets
midx: write object id fanout chunk
midx: write object ids in a chunk
...
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Create a test-tool helper to create the server side of
a windows named pipe, wait for a client connection, and
copy data written to the pipe to stdout.
Create t0051 test to route GIT_TRACE output of a command
to a named pipe using the above test-tool helper.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This script uses Documentation/config.txt as input for "git help
--config" and "git config" completion but it misses the fact that
config.txt includes other txt files. Include all *config.txt as input
when scanning for config keys. This could produce false positives, but
as long as we stick to the blah-config.txt naming convention, we
should be ok.
While at there, move diff.* from config.txt to diff-config.txt where
all other diff config keys are.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ds/multi-pack-index: (23 commits)
midx: clear midx on repack
packfile: skip loading index if in multi-pack-index
midx: prevent duplicate packfile loads
midx: use midx in approximate_object_count
midx: use existing midx when writing new one
midx: use midx in abbreviation calculations
midx: read objects from multi-pack-index
config: create core.multiPackIndex setting
midx: write object offsets
midx: write object id fanout chunk
midx: write object ids in a chunk
midx: sort and deduplicate objects from packfiles
midx: read pack names into array
multi-pack-index: write pack names in chunk
multi-pack-index: read packfile list
packfile: generalize pack directory list
t5319: expand test data
multi-pack-index: load into memory
midx: write header information to lockfile
multi-pack-index: add 'write' verb
...
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"git tbdiff" that lets us compare individual patches in two
iterations of a topic has been rewritten and made into a built-in
command.
* js/range-diff: (21 commits)
range-diff: use dim/bold cues to improve dual color mode
range-diff: make --dual-color the default mode
range-diff: left-pad patch numbers
completion: support `git range-diff`
range-diff: populate the man page
range-diff --dual-color: skip white-space warnings
range-diff: offer to dual-color the diffs
diff: add an internal option to dual-color diffs of diffs
color: add the meta color GIT_COLOR_REVERSE
range-diff: use color for the commit pairs
range-diff: add tests
range-diff: do not show "function names" in hunk headers
range-diff: adjust the output of the commit pairs
range-diff: suppress the diff headers
range-diff: indent the diffs just like tbdiff
range-diff: right-trim commit messages
range-diff: also show the diff between patches
range-diff: improve the order of the shown commits
range-diff: first rudimentary implementation
Introduce `range-diff` to compare iterations of a topic branch
...
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Build fix.
* nd/complete-config-vars:
Makefile: add missing dependency for command-list.h
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Hosting providers that allow users to "fork" existing
repos want those forks to share as much disk space as
possible.
Alternates are an existing solution to keep all the
objects from all the forks into a unique central repo,
but this can have some drawbacks. Especially when
packing the central repo, deltas will be created
between objects from different forks.
This can make cloning or fetching a fork much slower
and much more CPU intensive as Git might have to
compute new deltas for many objects to avoid sending
objects from a different fork.
Because the inefficiency primarily arises when an
object is deltified against another object that does
not exist in the same fork, we partition objects into
sets that appear in the same fork, and define
"delta islands". When finding delta base, we do not
allow an object outside the same island to be
considered as its base.
So "delta islands" is a way to store objects from
different forks in the same repo and packfile without
having deltas between objects from different forks.
This patch implements the delta islands mechanism in
"delta-islands.{c,h}", but does not yet make use of it.
A few new fields are added in 'struct object_entry'
in "pack-objects.h" though.
The documentation will follow in a patch that actually
uses delta islands in "builtin/pack-objects.c".
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Update the way we use Coccinelle to find out-of-style code that
need to be modernised.
* sg/coccicheck-updates:
coccinelle: extract dedicated make target to clean Coccinelle's results
coccinelle: put sane filenames into output patches
coccinelle: exclude sha1dc source files from static analysis
coccinelle: use $(addsuffix) in 'coccicheck' make target
coccinelle: mark the 'coccicheck' make target as .PHONY
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Preparatory code to later add json output for telemetry data.
* jh/json-writer:
json_writer: new routines to create JSON data
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"make DEVELOPER=1 DEVOPTS=pedantic" allows developers to compile
with -pedantic option, which may catch more problematic program
constructs and potential bugs.
* bb/make-developer-pedantic:
Makefile: add a DEVOPTS flag to get pedantic compilation
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At this stage, `git range-diff` can determine corresponding commits
of two related commit ranges. This makes use of the recently introduced
implementation of the linear assignment algorithm.
The core of this patch is a straight port of the ideas of tbdiff, the
apparently dormant project at https://github.com/trast/tbdiff.
The output does not at all match `tbdiff`'s output yet, as this patch
really concentrates on getting the patch matching part right.
Note: due to differences in the diff algorithm (`tbdiff` uses the Python
module `difflib`, Git uses its xdiff fork), the cost matrix calculated
by `range-diff` is different (but very similar) to the one calculated
by `tbdiff`. Therefore, it is possible that they find different matching
commits in corner cases (e.g. when a patch was split into two patches of
roughly equal length).
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This command does not do a whole lot so far, apart from showing a usage
that is oddly similar to that of `git tbdiff`. And for a good reason:
the next commits will turn `range-branch` into a full-blown replacement
for `tbdiff`.
At this point, we ignore tbdiff's color options, as they will all be
implemented later using diff_options.
Since f318d739159 (generate-cmds.sh: export all commands to
command-list.h, 2018-05-10), every new command *requires* a man page to
build right away, so let's also add a blank man page, too.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The problem solved by the code introduced in this commit goes like this:
given two sets of items, and a cost matrix which says how much it
"costs" to assign any given item of the first set to any given item of
the second, assign all items (except when the sets have different size)
in the cheapest way.
We use the Jonker-Volgenant algorithm to solve the assignment problem to
answer questions such as: given two different versions of a topic branch
(or iterations of a patch series), what is the best pairing of
commits/patches between the different versions?
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This rewrites append_todo_help() from shell to C. It also incorporates
some parts of initiate_action() and complete_action() that also write
help texts to the todo file.
This also introduces the source file rebase-interactive.c. This file
will contain functions necessary for interactive rebase that are too
specific for the sequencer, and is part of libgit.a.
Two flags are added to rebase--helper.c: one to call
append_todo_help() (`--append-todo-help`), and another one to tell
append_todo_help() to write the help text suited for the edit-todo
mode (`--write-edit-todo`).
Finally, append_todo_help() is removed from git-rebase--interactive.sh
to use `rebase--helper --append-todo-help` instead.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Commit 3ac68a93fd (help: add --config to list all available config -
2018-05-26) makes generate-cmdlist.sh adds a new input source
config.txt but it's not a Makefile dependency. Any changes in
config.txt will not trigger command-list.h regeneration and the config
list in this file becomes outdated. Correct the dependency.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The functions present in `git-legacy-rebase.sh` are used by the rebase
backends as they are implemented as shell script functions in the
`git-rebase--<backend>` files.
To make the `builtin/rebase.c` work, we have to provide support via
a Unix shell script snippet that uses these functions and so, we
want to use the rebase backends *directly* from the builtin rebase
without going through `git-legacy-rebase.sh`.
This commit extracts the functions to a separate file,
`git-rebase--common`, that will be read by `git-legacy-rebase.sh` and
by the shell script snippets which will be used extensively in the
following commits.
Signed-off-by: Pratik Karki <predatoramigo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This commit imitates the strategy that was used to convert the
difftool to a builtin. We start by renaming the shell script
`git-rebase.sh` to `git-legacy-rebase.sh` and introduce a
`builtin/rebase.c` that simply executes the shell script version,
unless the config setting `rebase.useBuiltin` is set to `true`.
The motivation behind this is to rewrite all the functionality of the
shell script version in the aforementioned `rebase.c`, one by one and
be able to conveniently test new features by configuring
`rebase.useBuiltin`.
In the original difftool conversion, if sane_execvp() that attempts to
run the legacy scripted version returned with non-negative status, the
command silently exited without doing anything with success, but
sane_execvp() should not return with non-negative status in the first
place, so we use die() to notice such an abnormal case.
We intentionally avoid reading the config directly to avoid
messing up the GIT_* environment variables when we need to fall back to
exec()ing the shell script. The test of builtin rebase can be done by
`git -c rebase.useBuiltin=true rebase ...`
Signed-off-by: Pratik Karki <predatoramigo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The singleton commit-graph in-core instance is made per in-core
repository instance.
* jt/commit-graph-per-object-store:
commit-graph: add repo arg to graph readers
commit-graph: store graph in struct object_store
commit-graph: add free_commit_graph
commit-graph: add missing forward declaration
object-store: add missing include
commit-graph: refactor preparing commit graph
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Add a server-side knob to skip commits in exponential/fibbonacci
stride in an attempt to cover wider swath of history with a smaller
number of iterations, potentially accepting a larger packfile
transfer, instead of going back one commit a time during common
ancestor discovery during the "git fetch" transaction.
* jt/fetch-negotiator-skipping:
negotiator/skipping: skip commits during fetch
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Code restructuring and a small fix to transport protocol v2 during
fetching.
* jt/fetch-pack-negotiator:
fetch-pack: introduce negotiator API
fetch-pack: move common check and marking together
fetch-pack: make negotiation-related vars local
fetch-pack: use ref adv. to prune "have" sent
fetch-pack: directly end negotiation if ACK ready
fetch-pack: clear marks before re-marking
fetch-pack: split up everything_local()
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In the interest of code hygiene, make it easier to compile Git with the
flag -pedantic.
Pure pedantic compilation with GCC 7.3 results in one warning per use of
the translation macro `N_`:
warning: array initialized from parenthesized string constant [-Wpedantic]
Therefore also disable the parenthesising of i18n strings with
-DUSE_PARENS_AROUND_GETTEXT_N=0.
Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When submitting a revised version of a patch series, it can be helpful
(to reviewers) to include a summary of changes since the previous
attempt in the form of an interdiff, however, doing so involves manually
copy/pasting the diff into the cover letter.
Add an --interdiff option to automate this process. The argument to
--interdiff specifies the tip of the previous attempt against which to
generate the interdiff. For example:
git format-patch --cover-letter --interdiff=v1 -3 v2
The previous attempt and the patch series being formatted must share a
common base.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Sometimes I want to remove only Coccinelle's results, but keep all
other build artifacts left after my usual 'make all man' build. This
new 'cocciclean' make target will allow just that.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Coccinelle outputs its suggested transformations as patches, whose
header looks something like this:
--- commit.c
+++ /tmp/cocci-output-19250-7ae78a-commit.c
Note the lack of 'diff --opts <old> <new>' line, the differing number
of path components on the --- and +++ lines, and the nonsensical
filename on the +++ line. 'patch -p0' can still apply these patches,
as it takes the filename to be modified from the --- line. Alas, 'git
apply' can't, because it takes the filename from the +++ line, and
then complains about the nonexisting file.
Pass the '--patch .' options to Coccinelle via the SPATCH_FLAGS 'make'
variable, as it seems to make it generate proper context diff patches,
with the header starting with a 'diff ...' line and containing sane
filenames. The resulting 'contrib/coccinelle/*.cocci.patch' files
then can be applied both with 'git apply' and 'patch' (even without
'-p0').
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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sha1dc is an external library, that we carry in-tree for convenience
or grab as a submodule, so there is no use in applying our semantic
patches to its source files.
Therefore, exclude sha1dc's source files from Coccinelle's static
analysis.
This change also makes the static analysis somewhat faster: presumably
because of the heavy use of repetitive macro declarations, applying
the semantic patches 'array.cocci' and 'swap.cocci' to 'sha1dc/sha1.c'
takes over half a minute each on my machine, which amounts to about a
third of the runtime of applying these two semantic patches to the
whole git source tree.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The dependencies of the 'coccicheck' make target are listed with the
help of the $(patsubst) make function, which in this case doesn't do
any pattern substitution, but only adds the '.patch' suffix.
Use the shorter and more idiomatic $(addsuffix) make function instead.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The 'coccicheck' target doesn't create a file with the same name, so
mark it as .PHONY.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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