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4 years agotest-lib: make $GIT_BUILD_DIR an absolute path
Ævar Arnfjörð Bjarmason [Sun, 27 Feb 2022 10:25:12 +0000 (11:25 +0100)] 
test-lib: make $GIT_BUILD_DIR an absolute path

Change the GIT_BUILD_DIR from a path like "/path/to/build/t/.." to
"/path/to/build". The "TEST_DIRECTORY" here is already made an
absolute path a few lines above this.

We could simply do $(cd "$TEST_DIRECTORY"/.." && pwd) here, but as
noted in the preceding commit the "$TEST_DIRECTORY" can't be anything
except the path containing this test-lib.sh file at this point, so we
can more cheaply and equally strip the "/t" off the end.

This change will be helpful to LSAN_OPTIONS which will want to strip
the build directory path from filenames, which we couldn't do if we
had a "/.." in there.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agotest-lib: correct and assert TEST_DIRECTORY overriding
Ævar Arnfjörð Bjarmason [Sun, 27 Feb 2022 10:25:11 +0000 (11:25 +0100)] 
test-lib: correct and assert TEST_DIRECTORY overriding

Correct a misleading comment added by me in 62f539043c7 (test-lib:
Allow overriding of TEST_DIRECTORY, 2010-08-19), and add an assertion
that TEST_DIRECTORY cannot point to any directory except the "t"
directory in the top-level of git.git.

This assertion is in effect not new, since we'd already die if that
wasn't the case[1], but it and the updated commentary help to make
that clearer.

The existing comments were also on the wrong arms of the
"if". I.e. the "allow tests to override this" was on the "test -z"
arm. That came about due to a combination of 62f539043c7 and
85176d72513 (test-lib.sh: convert $TEST_DIRECTORY to an absolute path,
2013-11-17).

Those earlier comments could be read as allowing the "$TEST_DIRECTORY"
to be some path outside of t/. As explained in the updated comment
that's impossible, rather it was meant for *tests* that ran outside of
t/, i.e. the "t0000-basic.sh" tests that use "lib-subtest.sh".

Those tests have a different working directory, but they set the
"TEST_DIRECTORY" to the same path for bootstrapping. The comments now
reflect that, and further comment on why we have a hard dependency on
this.

1. https://lore.kernel.org/git/220222.86o82z8als.gmgdl@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agotest-lib: add GIT_SAN_OPTIONS, inherit [AL]SAN_OPTIONS
Ævar Arnfjörð Bjarmason [Sun, 27 Feb 2022 10:25:10 +0000 (11:25 +0100)] 
test-lib: add GIT_SAN_OPTIONS, inherit [AL]SAN_OPTIONS

Change our ASAN_OPTIONS and LSAN_OPTIONS to set defaults for those
variables, rather than punting out entirely if we already have them in
the environment.

We want to take any user-provided settings over our own, but we can do
that by prepending our defaults to the variable. The libsanitizer
options parsing has "last option wins" semantics.

It's now possible to do e.g.:

    LSAN_OPTIONS=report_objects=1 ./t0006-date.sh

And not have the "report_objects=1" setting overwrite our sensible
default of "abort_on_error=1", but by prepending to the list we ensure
that:

    LSAN_OPTIONS=report_objects=1:abort_on_error=0 ./t0006-date.sh

Will take the desired "abort_on_error=0" over our default.

See b0f4c9087e1 (t: support clang/gcc AddressSanitizer, 2014-12-08)
for the original pattern being altered here, and
85b81b35ff9 (test-lib: set LSAN_OPTIONS to abort by default,
2017-09-05) for when LSAN_OPTIONS was added in addition to the
then-existing ASAN_OPTIONS.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agountracked-cache: write index when populating empty untracked cache
Tao Klerks [Sun, 27 Feb 2022 21:57:01 +0000 (21:57 +0000)] 
untracked-cache: write index when populating empty untracked cache

It is expected that an empty/unpopulated untracked cache structure can
be written to the index - by update-index, or by a "git status" call
that sees the untracked cache should be enabled and is not, but is
running with options that make the untracked cache non-applicable in
that run (eg a pathspec).

Currently, if that happens, then subsequent "git status" calls end up
populating the untracked cache, but not writing the index (not saving
their work) - so the performance outcome is almost identical to the
cache being altogether disabled.

This continues until the index gets written with the untracked cache
populated, for some *other* reason, such as a working tree change.

Detect the condition where an empty untracked cache exists in the
index and we will collect the list of untracked paths, and queue an
index write under that condition, so that the collected untracked
paths can be written out to the untracked cache extension in the
index.

This change depends on previous fixes to t7519 for the "ignore .git
changes when invalidating UNTR" test case to pass - before this fix,
the test never actually did anything as it was not set up correctly.

Signed-off-by: Tao Klerks <tao@klerks.biz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agot7519: populate untracked cache before test
Tao Klerks [Sun, 27 Feb 2022 21:57:00 +0000 (21:57 +0000)] 
t7519: populate untracked cache before test

In its current state, the t7519 test dealing with untracked cache
assumes that "git update-index --untracked-cache" will *populate* the
untracked cache. This is not correct - it will only add an empty
untracked cache structure to the index.

If we're going to compare two git status runs with something
interesting happening in-between, we need to ensure that the index is
in a stable/steady state *before* that first run.

Achieve this by adding another prior "git status" run.

At this stage this change does nothing, because there is a bug,
addressed in the next patch, whereby once the empty untracked cache
structure is added by the update-index invocation, the untracked cache
gets updated in every subsequent "git status" call, but the index with
these updates does not get written down.

That bug actually invalidates this entire test case - but we're fixing
that next.

Signed-off-by: Tao Klerks <tao@klerks.biz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agot7519: avoid file to index mtime race for untracked cache
Tao Klerks [Sun, 27 Feb 2022 21:56:59 +0000 (21:56 +0000)] 
t7519: avoid file to index mtime race for untracked cache

In t7519 there is a test that writes files to disk, and immediately
writes the index with the untracked cache. Because of
mtime-comparison logic that uses a 1-second resolution, this means
the cached entries are not trusted/used under some circumstances
(see read-cache.c#is_racy_stat()).

Untracked cache tests in t7063 use a 1-second delay to avoid this
issue, but we don't want to introduce arbitrary slowdowns, so instead
use test-tool chmtime to backdate the files slightly. The t7063
delays are a #leftoverbit, to be worked on in a separate series.

This change doesn't actually affect the outcome of the test, but does
enhance its validity, and becomes relevant after later changes.

Signed-off-by: Tao Klerks <tao@klerks.biz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agorerere-train: two fixes to the use of "git show -s"
Junio C Hamano [Sun, 27 Feb 2022 22:09:24 +0000 (14:09 -0800)] 
rerere-train: two fixes to the use of "git show -s"

The script uses "git show -s" to display the title of the merge
commit being studied, without explicitly disabling the pager, which
is not a safe thing to do in a script.

For example, when the pager is set to "less" with "-SF" options (-S
tells the pager not to fold lines but allow horizontal scrolling to
show the overly long lines, -F tells the pager not to wait if the
output in its entirety is shown on a single page), and the title of
the merge commit is longer than the width of the terminal, the pager
will wait until the end-user tells it to quit after showing the
single line.

Explicitly disable the pager with this "git show" invocation to fix
this.

The command uses the "--pretty=format:..." format, which adds LF in
between each pair of commits it outputs, which means that the label
for the merge being learned from will be followed by the next
message on the same line.  "--pretty=tformat:..." is what we should
instead, which adds LF after each commit, or a more modern way to
spell it, i.e. "--format=...".  This existing breakage becomes
easier to see, now we no longer use the pager.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoswitch: mention the --detach option when dying due to lack of a branch
Alex Henrie [Sat, 26 Feb 2022 06:12:13 +0000 (23:12 -0700)] 
switch: mention the --detach option when dying due to lack of a branch

Users who are accustomed to doing `git checkout <tag>` assume that
`git switch <tag>` will do the same thing. Inform them of the --detach
option so they aren't left wondering why `git switch` doesn't work but
`git checkout` does.

Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file API: pass an enum to read_object_with_reference()
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:34 +0000 (00:48 +0100)] 
object-file API: pass an enum to read_object_with_reference()

Change the read_object_with_reference() function to take an "enum
object_type". It was not prepared to handle an arbitrary "const
char *type", as it was itself calling type_from_string().

Let's change the only caller that passes in user data to use
type_from_string(), and convert the rest to use e.g. "OBJ_TREE"
instead of "tree_type".

The "cat-file" caller is not on the codepath that
handles"--allow-unknown", so the type_from_string() there is safe. Its
use of type_from_string() doesn't functionally differ from that of the
pre-image.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file.c: add a literal version of write_object_file_prepare()
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:33 +0000 (00:48 +0100)] 
object-file.c: add a literal version of write_object_file_prepare()

Split off a *_literally() variant of the write_object_file_prepare()
function. To do this create a new "hash_object_body()" static helper.

We now defer the type_name() call until the very last moment in
format_object_header() for those callers that aren't "hash-object
--literally".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file API: have hash_object_file() take "enum object_type"
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:32 +0000 (00:48 +0100)] 
object-file API: have hash_object_file() take "enum object_type"

Change the hash_object_file() function to take an "enum
object_type".

Since a preceding commit all of its callers are passing either
"{commit,tree,blob,tag}_type", or the result of a call to type_name(),
the parse_object() caller that would pass NULL is now using
stream_object_signature().

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject API: rename hash_object_file_literally() to write_*()
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:31 +0000 (00:48 +0100)] 
object API: rename hash_object_file_literally() to write_*()

Before 0c3db67cc81 (hash-object --literally: fix buffer overrun with
extra-long object type, 2015-05-04) the hash-object code being changed
here called write_sha1_file() to both hash and write a loose
object. Before that we'd use hash_sha1_file() to if "-w" wasn't
provided, and otherwise call write_sha1_file().

Now we'll always call the same function for both writing. Let's rename
it from hash_*_literally() to write_*_literally(). Even though the
write_*() might not actually write if HASH_WRITE_OBJECT isn't in
"flags", having it be more similar to write_object_file_flags() than
hash_object_file(), but carrying a name that would suggest that it's a
variant of the latter is confusing.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file API: split up and simplify check_object_signature()
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:30 +0000 (00:48 +0100)] 
object-file API: split up and simplify check_object_signature()

Split up the check_object_signature() function into that non-streaming
version (it accepts an already filled "buf"), and a new
stream_object_signature() which will retrieve the object from storage,
and hash it on-the-fly.

All of the callers of check_object_signature() were effectively
calling two different functions, if we go by cyclomatic
complexity. I.e. they'd either take the early "if (map)" branch and
return early, or not. This has been the case since the "if (map)"
condition was added in 090ea12671b (parse_object: avoid putting whole
blob in core, 2012-03-07).

We can then further simplify the resulting check_object_signature()
function since only one caller wanted to pass a non-NULL "buf" and a
non-NULL "real_oidp". That "read_loose_object()" codepath used by "git
fsck" can instead use hash_object_file() followed by oideq().

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject API users + docs: check <0, not !0 with check_object_signature()
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:29 +0000 (00:48 +0100)] 
object API users + docs: check <0, not !0 with check_object_signature()

Change those users of the object API that misused
check_object_signature() by assuming it returned any non-zero when the
OID didn't match the expected value to check <0 instead. In practice
all of this code worked before, but it wasn't consistent with rest of
the users of the API.

Let's also clarify what the <0 return value means in API docs.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject API docs: move check_object_signature() docs to cache.h
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:28 +0000 (00:48 +0100)] 
object API docs: move check_object_signature() docs to cache.h

Move the API documentation for check_object_signature() to cache.h,
where its prototype is declared. This is in preparation for adding a
companion function.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject API: correct "buf" v.s. "map" mismatch in *.c and *.h
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:27 +0000 (00:48 +0100)] 
object API: correct "buf" v.s. "map" mismatch in *.c and *.h

Change the name of the second argument to check_object_signature() to
be "buf" in object-file.c, making it consistent with the prototype in
cache.h

This fixes an inconsistency that's been with us since 2ade9340262 (Add
"check_sha1_signature()" helper function, 2005-04-08), and makes a
subsequent commit's diff smaller, as we'll move these API docs to
cache.h.

While we're at it fix a small grammar error in the documentation,
dropping an "an" before "in-core object-data".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file API: have write_object_file() take "enum object_type"
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:26 +0000 (00:48 +0100)] 
object-file API: have write_object_file() take "enum object_type"

Change the write_object_file() function to take an "enum object_type"
instead of a "const char *type". Its callers either passed
{commit,tree,blob,tag}_type and can pass the corresponding OBJ_* type
instead, or were hardcoding strings like "blob".

This avoids the back & forth fragility where the callers of
write_object_file() would have the enum type, and convert it
themselves via type_name(). We do have to now do that conversion
ourselves before calling write_object_file_prepare(), but those
codepaths will be similarly adjusted in subsequent commits.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file API: add a format_object_header() function
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:25 +0000 (00:48 +0100)] 
object-file API: add a format_object_header() function

Add a convenience function to wrap the xsnprintf() command that
generates loose object headers. This code was copy/pasted in various
parts of the codebase, let's define it in one place and re-use it from
there.

All except one caller of it had a valid "enum object_type" for us,
it's only write_object_file_prepare() which might need to deal with
"git hash-object --literally" and a potential garbage type. Let's have
the primary API use an "enum object_type", and define a *_literally()
function that can take an arbitrary "const char *" for the type.

See [1] for the discussion that prompted this patch, i.e. new code in
object-file.c that wanted to copy/paste the xsnprintf() invocation.

In the case of fast-import.c the callers unfortunately need to cast
back & forth between "unsigned char *" and "char *", since
format_object_header() ad encode_in_pack_object_header() take
different signedness.

1. https://lore.kernel.org/git/211213.86bl1l9bfz.gmgdl@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file API: return "void", not "int" from hash_object_file()
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:24 +0000 (00:48 +0100)] 
object-file API: return "void", not "int" from hash_object_file()

The hash_object_file() function added in abdc3fc8421 (Add
hash_sha1_file(), 2006-10-14) did not have a meaningful return value,
and it never has.

One was seemingly added to avoid adding braces to the "ret = "
assignments being modified here. Let's instead assign "0" to the "ret"
variables at the beginning of the relevant functions, and have them
return "void".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file.c: split up declaration of unrelated variables
Ævar Arnfjörð Bjarmason [Fri, 4 Feb 2022 23:48:23 +0000 (00:48 +0100)] 
object-file.c: split up declaration of unrelated variables

Split up the declaration of the "ret" and "re_allocated"
variables. It's not our usual style to group variable declarations
simply because they share a type, we'd only prefer to do so when the
two are closely related (e.g. "int i, j"). This change makes a
subsequent and meaningful change's diff smaller.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoThe eighth batch
Junio C Hamano [Fri, 25 Feb 2022 23:47:20 +0000 (15:47 -0800)] 
The eighth batch

Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoMerge branch 'tb/coc-plc-update'
Junio C Hamano [Fri, 25 Feb 2022 23:47:38 +0000 (15:47 -0800)] 
Merge branch 'tb/coc-plc-update'

Document Taylor as a new member of Git PLC at SFC.  Welcome.

* tb/coc-plc-update:
  CODE_OF_CONDUCT.md: update PLC members list

4 years agoMerge branch 'en/ort-inner-merge-conflict-report'
Junio C Hamano [Fri, 25 Feb 2022 23:47:38 +0000 (15:47 -0800)] 
Merge branch 'en/ort-inner-merge-conflict-report'

Messages "ort" merge backend prepares while dealing with conflicted
paths were unnecessarily confusing since it did not differentiate
inner merges and outer merges.

* en/ort-inner-merge-conflict-report:
  merge-ort: make informational messages from recursive merges clearer

4 years agoMerge branch 'rs/pcre-invalid-utf8-fix-fix'
Junio C Hamano [Fri, 25 Feb 2022 23:47:38 +0000 (15:47 -0800)] 
Merge branch 'rs/pcre-invalid-utf8-fix-fix'

Workaround we have for versions of PCRE2 before their version 10.36
were in effect only for their versions newer than 10.36 by mistake,
which has been corrected.

* rs/pcre-invalid-utf8-fix-fix:
  grep: fix triggering PCRE2_NO_START_OPTIMIZE workaround

4 years agoMerge branch 'ab/diff-free-more'
Junio C Hamano [Fri, 25 Feb 2022 23:47:36 +0000 (15:47 -0800)] 
Merge branch 'ab/diff-free-more'

Leakfixes.

* ab/diff-free-more:
  diff.[ch]: have diff_free() free options->parseopts
  diff.[ch]: have diff_free() call clear_pathspec(opts.pathspec)

4 years agoMerge branch 'ds/core-untracked-cache-config'
Junio C Hamano [Fri, 25 Feb 2022 23:47:36 +0000 (15:47 -0800)] 
Merge branch 'ds/core-untracked-cache-config'

Setting core.untrackedCache to true failed to add the untracked
cache extension to the index.

* ds/core-untracked-cache-config:
  dir: force untracked cache with core.untrackedCache

4 years agoMerge branch 'ab/date-mode-release'
Junio C Hamano [Fri, 25 Feb 2022 23:47:36 +0000 (15:47 -0800)] 
Merge branch 'ab/date-mode-release'

Plug (some) memory leaks around parse_date_format().

* ab/date-mode-release:
  date API: add and use a date_mode_release()
  date API: add basic API docs
  date API: provide and use a DATE_MODE_INIT
  date API: create a date.h, split from cache.h
  cache.h: remove always unused show_date_human() declaration

4 years agoMerge branch 'jc/name-rev-stdin'
Junio C Hamano [Fri, 25 Feb 2022 23:47:36 +0000 (15:47 -0800)] 
Merge branch 'jc/name-rev-stdin'

Finishing touches to an earlier "name-rev --annotate-stdin" series.

* jc/name-rev-stdin:
  name-rev: replace --stdin with --annotate-stdin in synopsis

4 years agoMerge branch 'ab/grep-patterntype'
Junio C Hamano [Fri, 25 Feb 2022 23:47:35 +0000 (15:47 -0800)] 
Merge branch 'ab/grep-patterntype'

Some code clean-up in the "git grep" machinery.

* ab/grep-patterntype:
  grep: simplify config parsing and option parsing
  grep.c: do "if (bool && memchr())" not "if (memchr() && bool)"
  grep.h: make "grep_opt.pattern_type_option" use its enum
  grep API: call grep_config() after grep_init()
  grep.c: don't pass along NULL callback value
  built-ins: trust the "prefix" from run_builtin()
  grep tests: add missing "grep.patternType" config tests
  grep tests: create a helper function for "BRE" or "ERE"
  log tests: check if grep_config() is called by "log"-like cmds
  grep.h: remove unused "regex_t regexp" from grep_opt

4 years agoMerge branch 'js/apply-partial-clone-filters-recursively'
Junio C Hamano [Fri, 25 Feb 2022 23:47:35 +0000 (15:47 -0800)] 
Merge branch 'js/apply-partial-clone-filters-recursively'

"git clone --filter=... --recurse-submodules" only makes the
top-level a partial clone, while submodules are fully cloned.  This
behaviour is changed to pass the same filter down to the submodules.

* js/apply-partial-clone-filters-recursively:
  clone, submodule: pass partial clone filters to submodules

4 years agoMerge branch 'ja/i18n-common-messages'
Junio C Hamano [Fri, 25 Feb 2022 23:47:35 +0000 (15:47 -0800)] 
Merge branch 'ja/i18n-common-messages'

Unify more messages to help l10n.

* ja/i18n-common-messages:
  i18n: fix some misformated placeholders in command synopsis
  i18n: remove from i18n strings that do not hold translatable parts
  i18n: factorize "invalid value" messages
  i18n: factorize more 'incompatible options' messages

4 years agoMerge branch 'ab/only-single-progress-at-once'
Junio C Hamano [Fri, 25 Feb 2022 23:47:35 +0000 (15:47 -0800)] 
Merge branch 'ab/only-single-progress-at-once'

Further tweaks on progress API.

* ab/only-single-progress-at-once:
  pack-bitmap-write.c: don't return without stop_progress()
  progress API: unify stop_progress{,_msg}(), fix trace2 bug
  progress.c: refactor stop_progress{,_msg}() to use helpers
  progress.c: use dereferenced "progress" variable, not "(*p_progress)"
  progress.h: format and be consistent with progress.c naming
  progress.c tests: test some invalid usage
  progress.c tests: make start/stop commands on stdin
  progress.c test helper: add missing braces
  leak tests: fix a memory leak in "test-progress" helper

4 years agoMerge branch 'ds/sparse-checkout-requires-per-worktree-config'
Junio C Hamano [Fri, 25 Feb 2022 23:47:33 +0000 (15:47 -0800)] 
Merge branch 'ds/sparse-checkout-requires-per-worktree-config'

"git sparse-checkout" wants to work with per-worktree configuration,
but did not work well in a worktree attached to a bare repository.

* ds/sparse-checkout-requires-per-worktree-config:
  config: make git_configset_get_string_tmp() private
  worktree: copy sparse-checkout patterns and config on add
  sparse-checkout: set worktree-config correctly
  config: add repo_config_set_worktree_gently()
  worktree: create init_worktree_config()
  Documentation: add extensions.worktreeConfig details

4 years agoMerge branch 'ab/ambiguous-object-name'
Junio C Hamano [Fri, 25 Feb 2022 23:47:33 +0000 (15:47 -0800)] 
Merge branch 'ab/ambiguous-object-name'

Error output given in response to an ambiguous object name has been
improved.

* ab/ambiguous-object-name:
  object-name: re-use "struct strbuf" in show_ambiguous_object()
  object-name: iterate ambiguous objects before showing header
  object-name: show date for ambiguous tag objects
  object-name: make ambiguous object output translatable
  object-name: explicitly handle bad tags in show_ambiguous_object()
  object-name: explicitly handle OBJ_BAD in show_ambiguous_object()
  object-name tests: add tests for ambiguous object blind spots

4 years agofast-import.c: use designated initializers for "partial" struct assignments
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:33:07 +0000 (10:33 +0100)] 
fast-import.c: use designated initializers for "partial" struct assignments

Change a few existing non-designated initializer assignments to use
"partial" designated initializer assignments. I.e. we're now omitting
the "NULL" or "0" fields and letting the initializer take care of them
for us.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agorefspec.c: use designated initializers for "struct refspec_item"
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:33:05 +0000 (10:33 +0100)] 
refspec.c: use designated initializers for "struct refspec_item"

Change the "struct refspec_item" at the top of refspec.c to use
designated initializers. Let's keep the "= 0" assignments for
self-documentation purposes, even though they're now redundant.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoconvert.c: use designated initializers for "struct stream_filter*"
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:33:04 +0000 (10:33 +0100)] 
convert.c: use designated initializers for "struct stream_filter*"

Change the "struct stream_filter_vtbl" and "struct stream_filter"
assignments in convert.c to use designated initializers.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agouserdiff.c: use designated initializers for "struct userdiff_driver"
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:33:03 +0000 (10:33 +0100)] 
userdiff.c: use designated initializers for "struct userdiff_driver"

Change the "struct userdiff_driver" assignmentns to use designated
initializers, but let's keep the PATTERNS() and IPATTERN() convenience
macros to avoid churn, but have them defined in terms of designated
initializers.

For the "driver_true" and "driver_false" let's have the compiler
implicitly initialize most of the fields, but let's leave a redundant
".binary = 0" for "driver_true" to make it obvious that it's the
opposite of the the ".binary = 1" for "driver_false".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoarchive-*.c: use designated initializers for "struct archiver"
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:33:02 +0000 (10:33 +0100)] 
archive-*.c: use designated initializers for "struct archiver"

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoobject-file: use designated initializers for "struct git_hash_algo"
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:33:01 +0000 (10:33 +0100)] 
object-file: use designated initializers for "struct git_hash_algo"

As with the preceding commit, change another file-level struct
assignment to use designated initializers.

Retain the ".name = NULL" etc. in the case of the first element of
"unknown hash algorithm", to make it explicit that we're intentionally
not setting those, it's not just that we forgot.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agotrace2: use designated initializers for "struct tr2_dst"
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:33:00 +0000 (10:33 +0100)] 
trace2: use designated initializers for "struct tr2_dst"

Convert the "static struct tr2_dst" assignments in trace2/* to use
designated initializers. I don't think it improves readability to
include the explicit 0-ing out of the
fd/initialized/need_close/too_many_files members, so let's have those
be initialized implicitly by the compiler.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agotrace2: use designated initializers for "struct tr2_tgt"
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:32:59 +0000 (10:32 +0100)] 
trace2: use designated initializers for "struct tr2_tgt"

As with the preceding commit, change another set of file-level struct
assignments to use designated initializers.

As before the "= NULL" assignments are redundant, but we're keeping
them for self-documentation purposes. The comments left to explain the
pre-image can now be removed in favor of working code that relays the
same information to the reader.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoimap-send.c: use designated initializers for "struct imap_server_conf"
Ævar Arnfjörð Bjarmason [Thu, 24 Feb 2022 09:32:56 +0000 (10:32 +0100)] 
imap-send.c: use designated initializers for "struct imap_server_conf"

Cut down a lot on the verbosity of the "server" assignment in
imap-send.c using designated initializers, only the "ssl_verify"
member was being set to a non-NULL non-0 value.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agostash: strip "refs/heads/" with skip_prefix
Glen Choo [Mon, 24 Jan 2022 20:53:42 +0000 (12:53 -0800)] 
stash: strip "refs/heads/" with skip_prefix

When generating a message for a stash, "git stash" only records the
part of the branch name to the right of the last "/". e.g. if HEAD is at
"foo/bar/baz", "git stash" generates a message prefixed with "WIP on
baz:" instead of "WIP on foo/bar/baz:".

Fix this by using skip_prefix() to skip "refs/heads/" instead of looking
for the last instance of "/".

Reported-by: Kraymer <kraymer@gmail.com>
Reported-by: Daniel Hahler <git@thequod.de>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoindex-pack: clarify the breached limit
Matt Cooper [Thu, 24 Feb 2022 00:07:20 +0000 (00:07 +0000)] 
index-pack: clarify the breached limit

As a small courtesy to users, report what limit was breached. This
is especially useful when a push exceeds a server-defined limit, since
the user is unlikely to have configured the limit (their host did).
Also demonstrate the human-readable message in a test.

Helped-by: Taylor Blau <me@ttaylorr.com>
Helped-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Matt Cooper <vtbassmatt@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoThe seventh batch
Junio C Hamano [Thu, 24 Feb 2022 00:58:13 +0000 (16:58 -0800)] 
The seventh batch

Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoMerge branch 'bc/clarify-eol-attr'
Junio C Hamano [Thu, 24 Feb 2022 00:58:04 +0000 (16:58 -0800)] 
Merge branch 'bc/clarify-eol-attr'

Documentation update

* bc/clarify-eol-attr:
  doc: clarify interaction between 'eol' and text=auto

4 years agoMerge branch 'ds/mailmap'
Junio C Hamano [Thu, 24 Feb 2022 00:58:04 +0000 (16:58 -0800)] 
Merge branch 'ds/mailmap'

Update mailmap entries.

* ds/mailmap:
  mailmap: change primary address for Derrick Stolee

4 years agoMerge branch 'ah/log-no-graph'
Junio C Hamano [Thu, 24 Feb 2022 00:58:03 +0000 (16:58 -0800)] 
Merge branch 'ah/log-no-graph'

"git log --graph --graph" used to leak a graph structure, and there
was no way to countermand "--graph" that appear earlier on the
command line.  A "--no-graph" option has been added and resource
leakage has been plugged.

* ah/log-no-graph:
  log: add a --no-graph option
  log: fix memory leak if --graph is passed multiple times

4 years agoMerge branch 'hw/t1410-adjust-test-for-reftable'
Junio C Hamano [Thu, 24 Feb 2022 00:58:03 +0000 (16:58 -0800)] 
Merge branch 'hw/t1410-adjust-test-for-reftable'

Fix tests that are unnecessarily specific to ref-files backend.

* hw/t1410-adjust-test-for-reftable:
  t1410: mark bufsize boundary test as REFFILES
  t1410: use test-tool ref-store to inspect reflogs

4 years agoMerge branch 'ps/fetch-optim-with-commit-graph'
Junio C Hamano [Thu, 24 Feb 2022 00:58:03 +0000 (16:58 -0800)] 
Merge branch 'ps/fetch-optim-with-commit-graph'

A couple of optimization to "git fetch".

* ps/fetch-optim-with-commit-graph:
  fetch: skip computing output width when not printing anything
  fetch-pack: use commit-graph when computing cutoff

4 years agoMerge branch 'sy/t0001-use-path-is-helper'
Junio C Hamano [Thu, 24 Feb 2022 00:58:03 +0000 (16:58 -0800)] 
Merge branch 'sy/t0001-use-path-is-helper'

Test modernization.

* sy/t0001-use-path-is-helper:
  t0001: replace "test [-d|-f]" with test_path_is_* functions

4 years agoMerge branch 'bs/forbid-i18n-of-protocol-token-in-fetch-pack'
Junio C Hamano [Thu, 24 Feb 2022 00:58:03 +0000 (16:58 -0800)] 
Merge branch 'bs/forbid-i18n-of-protocol-token-in-fetch-pack'

L10n support for a few error messages.

* bs/forbid-i18n-of-protocol-token-in-fetch-pack:
  fetch-pack: parameterize message containing 'ready' keyword

4 years agols-files: support --recurse-submodules --stage
Jonathan Tan [Thu, 24 Feb 2022 00:23:03 +0000 (16:23 -0800)] 
ls-files: support --recurse-submodules --stage

e77aa336f1 ("ls-files: optionally recurse into submodules", 2016-10-10)
taught ls-files the --recurse-submodules argument, but only in a limited
set of circumstances. In particular, --stage was unsupported, perhaps
because there was no repo_find_unique_abbrev(), which was only
introduced in 8bb95572b0 ("sha1-name.c: add
repo_find_unique_abbrev_r()", 2019-04-16). This function is needed for
using --recurse-submodules with --stage.

Now that we have repo_find_unique_abbrev(), teach support for this
combination of arguments.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agotests: make the code more readable
COGONI Guillaume [Tue, 22 Feb 2022 21:54:30 +0000 (22:54 +0100)] 
tests: make the code more readable

Replace the parsing of the output of "ls -l" by test_path_is_symlink() and
test_readlink().

Signed-off-by: COGONI Guillaume <cogoni.guillaume@gmail.com>
Co-authored-by: BRESSAT Jonathan <git.jonathan.bressat@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agotests: allow testing if a path is truly a file or a directory
COGONI Guillaume [Tue, 22 Feb 2022 21:54:29 +0000 (22:54 +0100)] 
tests: allow testing if a path is truly a file or a directory

Add test_path_is_file_not_symlink(), test_path_is_dir_not_symlink()
and test_path_is_symlink(). Case of use for the first one
in test t/t3903-stash.sh to replace "test -f" because that function
explicitly want the file not to be a symlink.
Give more friendly error message.

Signed-off-by: COGONI Guillaume <cogoni.guillaume@gmail.com>
Co-authored-by: BRESSAT Jonathan <git.jonathan.bressat@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agot/t3903-stash.sh: replace test [-d|-f] with test_path_is_*
COGONI Guillaume [Tue, 22 Feb 2022 21:54:28 +0000 (22:54 +0100)] 
t/t3903-stash.sh: replace test [-d|-f] with test_path_is_*

Use test_path_is_* to replace test [-d|-f] because that give more
explicit debugging information. And it doesn't change the semantics.

Signed-off-by: COGONI Guillaume <cogoni.guillaume@gmail.com>
Co-authored-by: BRESSAT Jonathan <git.jonathan.bressat@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoamend remaining usage strings according to style guide
Abhradeep Chakraborty [Wed, 23 Feb 2022 14:27:34 +0000 (14:27 +0000)] 
amend remaining usage strings according to style guide

Usage strings for git (sub)command flags has a style guide that
suggests - first letter should not capitalized (unless required)
and it should skip full-stop at the end of line. But there are
some files where usage-strings do not follow the above mentioned
guide.

Amend the usage strings that don't follow the style convention/guide.

Signed-off-by: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp: don't print "\n" before single-section output
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:52 +0000 (20:38 +0100)] 
help: don't print "\n" before single-section output

Fix a formatting regression in 1b81d8cb19d (help: use command-list.txt
for the source of guides, 2018-05-20). Adjust the output of "git help
--guides" and any other future single-section commands so that a
newline isn't inserted before the only section being printed.

This changes the output from:

    $ git help --guides

    The Git concept guides are:
    [...]

To:

    $ git help --guides
    The Git concept guides are:
    [...]

That we started printing an extra "\n" in 1b81d8cb19d wasn't intended,
but an emergent effect of moving all of the printing of "git help"
output to code that was ready to handle printing N sections.

With 1b81d8cb19d we started using the "print_cmd_by_category()"
function added earlier in the same series, or in cfb22a02ab5 (help:
use command-list.h for common command list, 2018-05-10).

Fixing this formatting nit is easy enough. Let's have all of the
output that would like to be "\n"-separated from other lines emit its
own "\n". We then adjust "print_cmd_by_category()" to only print a
"\n" to delimit the sections it's printing out.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp: add --no-[external-commands|aliases] for use with --all
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:51 +0000 (20:38 +0100)] 
help: add --no-[external-commands|aliases] for use with --all

Add the ability to only emit git's own usage information under
--all. This also allows us to extend the "test_section_spacing" tests
added in a preceding commit to test "git help --all"
output.

Previously we could not do that, as the tests might find a git-*
command in the "$PATH", which would make the output differ from one
setup to another.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp: error if [-a|-g|-c] and [-i|-m|-w] are combined
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:50 +0000 (20:38 +0100)] 
help: error if [-a|-g|-c] and [-i|-m|-w] are combined

Add more sanity checking to "git help" usage by erroring out if these
man viewer options are combined with incompatible command-modes that
will never use these documentation viewers.

This continues the work started in d35d03cf93e (help: simplify by
moving to OPT_CMDMODE(), 2021-09-22) of adding more sanity checking to
"git help". Doing this allows us to clarify the "SYNOPSIS" in the
documentation, and the "git help -h" output.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp: correct usage & behavior of "git help --all"
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:49 +0000 (20:38 +0100)] 
help: correct usage & behavior of "git help --all"

Do the same for the "--all" option that I did for "--guides" in
9856ea6785c (help: correct usage & behavior of "git help --guides",
2021-09-22). I.e. we've documented it as ignoring non-option
arguments, let's have it error out instead.

As with other changes made in 62f035aee3f (Merge branch
'ab/help-config-vars', 2021-10-13) this is technically a change in
behavior, but in practice it's just a bug fix. We were ignoring this
before, but by erroring we can simplify our documentation and
synopsis, as well as avoid user confusion as they wonder what the
difference between e.g. "git help --all" and "git help --all status"
is (there wasn't any difference).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp: note the option name on option incompatibility
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:48 +0000 (20:38 +0100)] 
help: note the option name on option incompatibility

Change the errors added in d35d03cf93e (help: simplify by moving to
OPT_CMDMODE(), 2021-09-22) to quote the offending option at the user
when invoked as e.g.:

    git help --guides garbage

Now instead of:

    fatal: this option doesn't take any other arguments

We'll emit:

    fatal: the '--guides' option doesn't take any non-option arguments

Let's also rename the function, as it will be extended to do other
checks that aren't "no extra argc" in a subsequent commit.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp.c: split up list_all_cmds_help() function
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:47 +0000 (20:38 +0100)] 
help.c: split up list_all_cmds_help() function

Split up the listing of commands and aliases from
list_all_cmds_help(). This will make a subsequent functional change
smaller.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp tests: test "git" and "git help [-a|-g] spacing
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:46 +0000 (20:38 +0100)] 
help tests: test "git" and "git help [-a|-g] spacing

There's logic in "help.c"'s "print_cmd_by_category()" to emit "help"
output with particular spacing, which doesn't make much sense when
emitting only one section with "help -g".

Let's add tests for the current spacing in preparation for a
subsequent whitespace formatting fix, and make sure that that fix
doesn't cause regressions for the "git" and "git help" output.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp.c: use puts() instead of printf{,_ln}() for consistency
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:45 +0000 (20:38 +0100)] 
help.c: use puts() instead of printf{,_ln}() for consistency

Change code in "help.c" that used printf_ln() without format
specifiers to use puts() instead, as other existing code in the file
does. Let's also change related code to use puts() instead of the
equivalent of calling "printf" with a "%s\n" format.

This formatting-only change will make a subsequent functional change
easier to read, as it'll be changing code that's consistently using
the same functions to do the same things.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohelp doc: add missing "]" to "[-a|--all]"
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 19:38:44 +0000 (20:38 +0100)] 
help doc: add missing "]" to "[-a|--all]"

Add a missing "]" to documentation added in 63eae83f8f3 (help: add "-a
--verbose" to list all commands with synopsis, 2018-05-20). This made
it seem as though "--[no-]verbose" can only be provided with "--all",
not "-a". The corresponding usage information in the C
code ("builtin_help_usage") does not have the same problem.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoreftable: rename writer_stats to reftable_writer_stats
Han-Wen Nienhuys [Mon, 21 Feb 2022 18:46:10 +0000 (18:46 +0000)] 
reftable: rename writer_stats to reftable_writer_stats

This function is part of the reftable API, so it should use the
reftable_ prefix

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoreftable: add test for length of disambiguating prefix
Han-Wen Nienhuys [Mon, 21 Feb 2022 18:46:09 +0000 (18:46 +0000)] 
reftable: add test for length of disambiguating prefix

The ID => ref map is trimming object IDs to a disambiguating prefix.
Check that we are computing their length correctly.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoreftable: ensure that obj_id_len is >= 2 on writing
Han-Wen Nienhuys [Mon, 21 Feb 2022 18:46:08 +0000 (18:46 +0000)] 
reftable: ensure that obj_id_len is >= 2 on writing

When writing the same hash many times, we might decide to use a
length-1 object ID prefix for the ObjectID => ref table, which is out
of spec.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoreftable: avoid writing empty keys at the block layer
Han-Wen Nienhuys [Mon, 21 Feb 2022 18:46:07 +0000 (18:46 +0000)] 
reftable: avoid writing empty keys at the block layer

The public interface (reftable_writer) already ensures that keys are
written in strictly increasing order, and an empty key by definition
fails this check.

However, by also enforcing this at the block layer, it is easier to
verify that records (which are written into blocks) never have to
consider the possibility of empty keys.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoreftable: add a test that verifies that writing empty keys fails
Han-Wen Nienhuys [Mon, 21 Feb 2022 18:46:06 +0000 (18:46 +0000)] 
reftable: add a test that verifies that writing empty keys fails

Empty keys can only be written as ref records with empty names. The
log record has a logical timestamp in the key, so the key is never
empty.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoreftable: reject 0 object_id_len
Han-Wen Nienhuys [Mon, 21 Feb 2022 18:46:05 +0000 (18:46 +0000)] 
reftable: reject 0 object_id_len

The spec says 2 <= object_id_len <= 31. We are lenient and allow 1,
but we forbid 0, so we can be sure that we never read a 0-length key.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoDocumentation: object_id_len goes up to 31
Han-Wen Nienhuys [Mon, 21 Feb 2022 18:46:04 +0000 (18:46 +0000)] 
Documentation: object_id_len goes up to 31

The value is stored in a 5-bit field, so we can't support more without
a format version upgrade.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoadd -p: disable stdin buffering when interactive.singlekey is set
Phillip Wood [Tue, 22 Feb 2022 18:53:35 +0000 (18:53 +0000)] 
add -p: disable stdin buffering when interactive.singlekey is set

The builtin "add -p" reads the key "F2" as three separate keys "^[",
"O" and "Q". The "Q" causes it to quit which is probably not what the
user was expecting. This is because it uses poll() to check for
pending input when reading escape sequences but reads the input with
getchar() which is buffered by default and so hoovers up all the
pending input leading poll() think there isn't anything pending. Fix
this by calling setbuf() to disable input buffering if
interactive.singlekey is set.

Looking at the comment above mingw_getchar() in terminal.c I wonder if
that function is papering over this bug and could be removed.
Unfortunately I don't have access to windows to test that.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoterminal: set VMIN and VTIME in non-canonical mode
Phillip Wood [Tue, 22 Feb 2022 18:53:34 +0000 (18:53 +0000)] 
terminal: set VMIN and VTIME in non-canonical mode

If VMIN and VTIME are both set to zero then the terminal performs
non-blocking reads which means that read_key_without_echo() returns
EOF if there is no key press pending. This results in the user being
unable to select anything when running "git add -p".  Fix this by
explicitly setting VMIN and VTIME when enabling non-canonical mode.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoterminal: pop signal handler when terminal is restored
Phillip Wood [Tue, 22 Feb 2022 18:53:33 +0000 (18:53 +0000)] 
terminal: pop signal handler when terminal is restored

When disable_bits() changes the terminal attributes it uses
sigchain_push_common() to restore the terminal if a signal is received
before restore_term() is called. However there is no corresponding
call to sigchain_pop_common() when the settings are restored so the
signal handler is left on the sigchain stack. This leaves the stack
unbalanced so code such as

sigchain_push_common(my_handler);
...
read_key_without_echo(...);
...
sigchain_pop_common();

pops the handler pushed by disable_bits() rather than the one it
intended to. Additionally "git add -p" changes the terminal settings
every time it reads a key press so the stack can grow significantly.

In order to fix this save_term() now sets up the signal handler so
restore_term() can unconditionally call sigchain_pop_common(). There
are no callers of save_term() outside of terminal.c as the only
external caller was removed by e3f7e01b50 ("Revert "editor: save and
reset terminal after calling EDITOR"", 2021-11-22). Any future callers
of save_term() should benefit from having the signal handler set up
for them.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoterminal: always reset terminal when reading without echo
Phillip Wood [Tue, 22 Feb 2022 18:53:32 +0000 (18:53 +0000)] 
terminal: always reset terminal when reading without echo

Break out of the loop to ensure restore_term() is called before
returning.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agot0003: avoid pipes with Git on LHS
Shubham Mishra [Wed, 23 Feb 2022 11:53:47 +0000 (17:23 +0530)] 
t0003: avoid pipes with Git on LHS

Pipes ignore error codes of LHS command and thus we should not use them
with Git in tests. As an alternative, use a 'tmp' file to write the Git
output so we can test the exit code.

Signed-off-by: Shubham Mishra <shivam828787@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: use 'worktree' over 'working tree'
Derrick Stolee [Wed, 23 Feb 2022 14:29:19 +0000 (14:29 +0000)] 
worktree: use 'worktree' over 'working tree'

It is helpful to distinguish between a 'working tree' and a 'worktree'.
A worktree contains a working tree plus additional metadata. This
metadata includes per-worktree refs and worktree-specific config.

This is the last of multiple changes to git-worktree.txt, starting at
the LIST OUTPUT FORMAT section.

The EXAMPLES section has an instance of "working tree" that must stay as
it is, because it is not talking about a worktree, but an example of why
a user might want to create a worktree.

Helped-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: use 'worktree' over 'working tree'
Derrick Stolee [Wed, 23 Feb 2022 14:29:18 +0000 (14:29 +0000)] 
worktree: use 'worktree' over 'working tree'

It is helpful to distinguish between a 'working tree' and a 'worktree'.
A worktree contains a working tree plus additional metadata. This
metadata includes per-worktree refs and worktree-specific config.

This is the sixth of multiple changes to git-worktree.txt, restricted to
the DETAILS section.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: use 'worktree' over 'working tree'
Derrick Stolee [Wed, 23 Feb 2022 14:29:17 +0000 (14:29 +0000)] 
worktree: use 'worktree' over 'working tree'

It is helpful to distinguish between a 'working tree' and a 'worktree'.
A worktree contains a working tree plus additional metadata. This
metadata includes per-worktree refs and worktree-specific config.

This is the fifth of multiple changes to git-worktree.txt, restricted to
the CONFIGURATION FILE section.

While here, clear up some language to improve readability.

Helped-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: use 'worktree' over 'working tree'
Derrick Stolee [Wed, 23 Feb 2022 14:29:16 +0000 (14:29 +0000)] 
worktree: use 'worktree' over 'working tree'

It is helpful to distinguish between a 'working tree' and a 'worktree'.
A worktree contains a working tree plus additional metadata. This
metadata includes per-worktree refs and worktree-specific config.

This is the fourth of multiple changes to git-worktree.txt, restricted
to the REFS section.

This section previously described "per working tree" refs but they are
now replaced with "per-worktree" refs, which matches the definition in
glossary-content.txt.

The first paragraph of this section was also a bit confusing, so it is
cleaned up to make it easier to understand.

Helped-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: use 'worktree' over 'working tree'
Derrick Stolee [Wed, 23 Feb 2022 14:29:15 +0000 (14:29 +0000)] 
worktree: use 'worktree' over 'working tree'

It is helpful to distinguish between a 'working tree' and a 'worktree'.
A worktree contains a working tree plus additional metadata. This
metadata includes per-worktree refs and worktree-specific config.

This is the third of multiple changes to git-worktree.txt, restricted to
the OPTIONS section.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: use 'worktree' over 'working tree'
Derrick Stolee [Wed, 23 Feb 2022 14:29:14 +0000 (14:29 +0000)] 
worktree: use 'worktree' over 'working tree'

It is helpful to distinguish between a 'working tree' and a 'worktree'.
A worktree contains a working tree plus additional metadata. This
metadata includes per-worktree refs and worktree-specific config.

This is the second of multiple changes to git-worktree.txt, restricted
to the COMMANDS section.

There is some language around the movement of "the working tree of a
linked worktree" which is used once, but the remaining uses are left as
just moving "a linked worktree" for brevity.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: use 'worktree' over 'working tree'
Derrick Stolee [Wed, 23 Feb 2022 14:29:13 +0000 (14:29 +0000)] 
worktree: use 'worktree' over 'working tree'

It is helpful to distinguish between a 'working tree' and a 'worktree'.
A worktree contains a working tree plus additional metadata. This
metadata includes per-worktree refs and worktree-specific config.

This is the first of multiple changes to git-worktree.txt, restricted to
the DESCRIPTION section.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: extract checkout_worktree()
Derrick Stolee [Wed, 23 Feb 2022 14:29:12 +0000 (14:29 +0000)] 
worktree: extract checkout_worktree()

The ability to add the --no-checkout flag to 'git worktree' was added in
ef2a0ac9a0 (worktree: add: introduce --checkout option, 2016-03-29).
Recently, we noticed that add_worktree() is rather complicated, so
extract the logic for this checkout process to simplify the method.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: extract copy_sparse_checkout()
Derrick Stolee [Wed, 23 Feb 2022 14:29:11 +0000 (14:29 +0000)] 
worktree: extract copy_sparse_checkout()

This logic was introduced by 5325591 (worktree: copy sparse-checkout
patterns and config on add, 2022-02-07), but some feedback came in that
the add_worktree() method was already too complex. It is better to
extract this logic into a helper method to reduce this complexity.

Reported-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: extract copy_filtered_worktree_config()
Derrick Stolee [Wed, 23 Feb 2022 14:29:10 +0000 (14:29 +0000)] 
worktree: extract copy_filtered_worktree_config()

This logic was introduced by 5325591 (worktree: copy sparse-checkout
patterns and config on add, 2022-02-07), but some feedback came in that
the add_worktree() method was already too complex. It is better to
extract this logic into a helper method to reduce this complexity.

Reported-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoworktree: combine two translatable messages
Derrick Stolee [Wed, 23 Feb 2022 14:29:09 +0000 (14:29 +0000)] 
worktree: combine two translatable messages

These two messages differ only by the config key name, which should not
be translated. Extract those keys so the messages can be translated from
the same string.

Reported-by: Jean-Noël AVILA <jn.avila@free.fr>
Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agoC99: remove hardcoded-out !HAVE_VARIADIC_MACROS code
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 16:05:27 +0000 (17:05 +0100)] 
C99: remove hardcoded-out !HAVE_VARIADIC_MACROS code

Remove the "else" branches of the HAVE_VARIADIC_MACROS macro, which
have been unconditionally omitted since 765dc168882 (git-compat-util:
always enable variadic macros, 2021-01-28).

Since were always omitted, anyone trying to use a compiler without
variadic macro support to compile a git since version
git v2.31.0 or later would have had a compilation error. 10 months
across a few releases since then should have been enough time for
anyone who cared to run into that and report the issue.

In addition to that, for anyone unsetting HAVE_VARIADIC_MACROS we've
been emitting extremely verbose warnings since at least
ee4512ed481 (trace2: create new combined trace facility,
2019-02-22). That's because there is no such thing as a
"region_enter_printf" or "region_leave_printf" format, so at least
under GCC and Clang everything that includes trace.h (almost every
file) emits a couple of warnings about that.

There's a large benefit to being able to have a hard dependency rely
on variadic macros, the code surrounding usage.c is hard to maintain
if we need to write two implementations of everything, and by relying
on "__FILE__" and "__LINE__" along with "__VA_ARGS__" we can in the
future make error(), die() etc. log where they were called from. We've
also recently merged d67fc4bf0ba (Merge branch 'bc/require-c99',
2021-12-10) which further cements our hard dependency on C99.

So let's delete the fallback code, and update our CodingGuidelines to
note that we depend on this. The added bullet-point starts with
lower-case for consistency with other bullet-points in that section.

The diff in "trace.h" is relatively hard to read, since we need to
retain the existing API docs, which were comments on the code used if
HAVE_VARIADIC_MACROS was not defined.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agogit-compat-util.h: clarify GCC v.s. C99-specific in comment
Ævar Arnfjörð Bjarmason [Mon, 21 Feb 2022 16:05:26 +0000 (17:05 +0100)] 
git-compat-util.h: clarify GCC v.s. C99-specific in comment

Change a comment added in e208f9cc757 (make error()'s constant return
value more visible, 2012-12-15). It's not correct that this is GCC-ism
anymore, it's code that uses standard C99 features.

The comment being changed here pre-dates the HAVE_VARIADIC_MACROS
define, which we got in e05bed960d3 (trace: add 'file:line' to all
trace output, 2014-07-12).

The original implementation of an error() macro) in e208f9cc757 used a
GCC-ism with the paste operator (see the commit message for mention of
it), but that was dropped later by 9798f7e5f9 (Use __VA_ARGS__ for all
of error's arguments, 2013-02-08), giving us the C99-portable version
we have now.

While we could remove the __GNUC__ define here, it might cause issues
for other compilers or static analysis systems, so let's not. See
87fe5df365 (inline constant return from error() function, 2014-05-06)
for one such issue.

See also e05bed960d3 (trace: add 'file:line' to all trace output,
2014-07-12) for another comment about GNUC's handling of __VA_ARGS__.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agomerge-ort: fix small memory leak in unique_path()
Elijah Newren [Sun, 20 Feb 2022 01:29:51 +0000 (01:29 +0000)] 
merge-ort: fix small memory leak in unique_path()

The struct strmap paths member of merge_options_internal is perhaps the
most central data structure to all of merge-ort.  Because all the paths
involved in the merge need to be kept until the merge is complete, this
"paths" data structure traditionally took responsibility for owning all
the allocated paths.  When the merge is over, those paths were free()d
as part of free()ing this strmap.

In commit 6697ee01b5d3 (merge-ort: switch our strmaps over to using
memory pools, 2021-07-30), we changed the allocations for pathnames to
come from a memory pool.  That meant the ownership changed slightly;
there were no individual free() calls to make, instead the memory pool
owned all those paths and they were free()d all at once.

Unfortunately unique_path() was written presuming the pre-memory-pool
model, and allocated a path on the heap and left it in the strmap for
later free()ing.  Modify it to return a path allocated from the memory
pool instead.

Note that there's one instance -- in record_conflicted_index_entries()
-- where the returned string from unique_path() was only used very
temporarily and thus had been immediately free()'d.  This codepath was
associated with an ugly skip-worktree workaround that has since been
better fixed by the in-flight en/present-despite-skipped topic.  This
workaround probably makes sense to excise once that topic merges down,
but for now, just remove the immediate free() and allow the returned
string to be free()d when the memory pool is released.

This fixes the following memory leak as reported by valgrind:

==PID== 65 bytes in 1 blocks are definitely lost in loss record 79 of 134
==PID==    at 0xADDRESS: malloc
==PID==    by 0xADDRESS: realloc
==PID==    by 0xADDRESS: xrealloc (wrapper.c:126)
==PID==    by 0xADDRESS: strbuf_grow (strbuf.c:98)
==PID==    by 0xADDRESS: strbuf_vaddf (strbuf.c:394)
==PID==    by 0xADDRESS: strbuf_addf (strbuf.c:335)
==PID==    by 0xADDRESS: unique_path (merge-ort.c:733)
==PID==    by 0xADDRESS: process_entry (merge-ort.c:3678)
==PID==    by 0xADDRESS: process_entries (merge-ort.c:4037)
==PID==    by 0xADDRESS: merge_ort_nonrecursive_internal (merge-ort.c:4621)
==PID==    by 0xADDRESS: merge_ort_internal (merge-ort.c:4709)
==PID==    by 0xADDRESS: merge_incore_recursive (merge-ort.c:4760)
==PID==    by 0xADDRESS: merge_ort_recursive (merge-ort-wrappers.c:57)
==PID==    by 0xADDRESS: try_merge_strategy (merge.c:753)

Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agomerge-ort: fix small memory leak in detect_and_process_renames()
Elijah Newren [Sun, 20 Feb 2022 01:29:50 +0000 (01:29 +0000)] 
merge-ort: fix small memory leak in detect_and_process_renames()

detect_and_process_renames() detects renames on both sides of history
and then combines these into a single diff_queue_struct.  The combined
diff_queue_struct needs to be able to hold the renames found on either
side, and since it knows the (maximum) size it needs, it pre-emptively
grows the array to the appropriate size:

ALLOC_GROW(combined.queue,
   renames->pairs[1].nr + renames->pairs[2].nr,
   combined.alloc);

It then collects the items from each side:

collect_renames(opt, &combined, MERGE_SIDE1, ...)
collect_renames(opt, &combined, MERGE_SIDE2, ...)

Note, though, that collect_renames() sometimes determines that some
pairs are unnecessary and does not include them in the combined array.
When it is done, detect_and_process_renames() frees this memory:

if (combined.nr) {
                ...
free(combined.queue);
        }

The problem is that sometimes even when there are pairs, none of them
are necessary.  Instead of checking combined.nr, just remove the
if-check; free() knows to skip NULL pointers.  This change fixes the
following memory leak, as reported by valgrind:

==PID== 192 bytes in 1 blocks are definitely lost in loss record 107 of 134
==PID==    at 0xADDRESS: malloc
==PID==    by 0xADDRESS: realloc
==PID==    by 0xADDRESS: xrealloc (wrapper.c:126)
==PID==    by 0xADDRESS: detect_and_process_renames (merge-ort.c:3134)
==PID==    by 0xADDRESS: merge_ort_nonrecursive_internal (merge-ort.c:4610)
==PID==    by 0xADDRESS: merge_ort_internal (merge-ort.c:4709)
==PID==    by 0xADDRESS: merge_incore_recursive (merge-ort.c:4760)
==PID==    by 0xADDRESS: merge_ort_recursive (merge-ort-wrappers.c:57)
==PID==    by 0xADDRESS: try_merge_strategy (merge.c:753)
==PID==    by 0xADDRESS: cmd_merge (merge.c:1676)
==PID==    by 0xADDRESS: run_builtin (git.c:461)
==PID==    by 0xADDRESS: handle_builtin (git.c:713)
==PID==    by 0xADDRESS: run_argv (git.c:780)
==PID==    by 0xADDRESS: cmd_main (git.c:911)
==PID==    by 0xADDRESS: main (common-main.c:52)

Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agosparse-checkout: reject arguments in cone-mode that look like patterns
Elijah Newren [Sat, 19 Feb 2022 16:44:45 +0000 (16:44 +0000)] 
sparse-checkout: reject arguments in cone-mode that look like patterns

In sparse-checkout add/set under cone mode, the arguments passed are
supposed to be directories rather than gitignore-style patterns.
However, given the amount of effort spent in the manual discussing
patterns, it is easy for users to assume they need to pass patterns such
as
   /foo/*
or
   !/bar/*/
or perhaps they really do ignore the directory rule and specify a
random gitignore-style pattern like
   *.c

To help catch such mistakes, throw an error if any of the positional
arguments:
  * starts with any of '/!'
  * contains any of '*?[]'

Inform users they can pass --skip-checks if they have a directory that
really does have such special characters in its name.  (We exclude '\'
because of sparse-checkout's special handling of backslashes; see
the MINGW test in t1091.46.)

Reviewed-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agosparse-checkout: error or warn when given individual files
Elijah Newren [Sat, 19 Feb 2022 16:44:44 +0000 (16:44 +0000)] 
sparse-checkout: error or warn when given individual files

The set and add subcommands accept multiple positional arguments.
The meaning of these arguments differs slightly in the two modes:

Cone mode only accepts directories.  If given a file, it would
previously treat it as a directory, causing not just the file itself to
be included but all sibling files as well -- likely against users'
expectations.  Throw an error if the specified path is a file in the
index.  Provide a --skip-checks argument to allow users to override
(e.g. for the case when the given path IS a directory on another
branch).

Non-cone mode accepts general gitignore patterns.  There are many
reasons to avoid this mode, but one possible reason to use it instead of
cone mode: to be able to select individual files within a directory.
However, if a file is passed to set/add in non-cone mode, you won't be
selecting a single file, you'll be selecting a file with the same name
in any directory.  Thus users will likely want to prefix any paths they
specify with a leading '/' character; warn users if the patterns they
specify exactly name a file because it means they are likely missing
such a leading slash.

Reviewed-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agosparse-checkout: pay attention to prefix for {set, add}
Elijah Newren [Sat, 19 Feb 2022 16:44:43 +0000 (16:44 +0000)] 
sparse-checkout: pay attention to prefix for {set, add}

In cone mode, non-option arguments to set & add are clearly paths, and
as such, we should pay attention to prefix.

In non-cone mode, it is not clear that folks intend to provide paths
since the inputs are gitignore-style patterns.  Paying attention to
prefix would prevent folks from doing things like
   git sparse-checkout add /.gitattributes
   git sparse-checkout add '/toplevel-dir/*'
In fact, the former will result in
   fatal: '/.gitattributes' is outside repository...
while the later will result in
   fatal: Invalid path '/toplevel-dir': No such file or directory
despite the fact that both are valid gitignore-style patterns that would
select real files if added to the sparse-checkout file.  This might lead
people to just use the path without the leading slash, potentially
resulting in them grabbing files with the same name throughout the
directory hierarchy contrary to their expectations.  See also [1] and
[2].  Adding prefix seems to just be fraught with error; so for now
simply throw an error in non-cone mode when sparse-checkout set/add are
run from a subdirectory.

[1] https://lore.kernel.org/git/e1934710-e228-adc4-d37c-f706883bd27c@gmail.com/
[2] https://lore.kernel.org/git/CABPp-BHXZ-XLxY0a3wCATfdq=6-EjW62RzbxKAoFPeXfJswD2w@mail.gmail.com/

Helped-by: Junio Hamano <gitster@pobox.com>
Reviewed-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agosparse-checkout: correctly set non-cone mode when expected
Elijah Newren [Sat, 19 Feb 2022 16:44:42 +0000 (16:44 +0000)] 
sparse-checkout: correctly set non-cone mode when expected

commit f2e3a218e8 ("sparse-checkout: enable `set` to initialize
sparse-checkout mode", 2021-12-14) made the `set` command able to
initialize sparse-checkout mode, but it also had to function when
sparse-checkout mode was already setup and the user just wanted to
change the sparsity paths.  So, if the user passed --cone or --no-cone,
then we should override the current setting, but if they didn't pass
either, we should use whatever the current cone mode setting is.

Unfortunately, there was a small error in the logic in that it would not
set the in-memory cone mode value (core_sparse_checkout_one) when
--no-cone was specified, but since it did set the config setting on
disk, any subsequent git invocation would correctly get non-cone mode.
As such, the error did not previously matter.  However, a subsequent
commit will add some logic that depends on core_sparse_checkout_cone
being set to the correct mode, so make sure it is set consistently with
the config values we will be writing to disk.

Reviewed-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agosparse-checkout: correct reapply's handling of options
Elijah Newren [Sat, 19 Feb 2022 16:44:41 +0000 (16:44 +0000)] 
sparse-checkout: correct reapply's handling of options

Commit 4e256731d6 ("sparse-checkout: enable reapply to take
--[no-]{cone,sparse-index}", 2021-12-14) made it so that reapply could
take additional options but added no tests.  Tests would have shown that
the feature doesn't work because the initial values are set AFTER
parsing the command line options instead of before.  Add a test and set
the initial value at the appropriate time.

Reviewed-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
4 years agohook tests: use a modern style for "pre-push" tests
Ævar Arnfjörð Bjarmason [Fri, 18 Feb 2022 20:52:59 +0000 (21:52 +0100)] 
hook tests: use a modern style for "pre-push" tests

Indent the here-docs and use "test_cmp" instead of "diff" in tests
added in ec55559f937 (push: Add support for pre-push hooks,
2013-01-13). Let's also use the more typical "expect" instead of
"expected" to be consistent with the rest of the test file.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>