Граф коммитов

56971 Коммитов

Автор SHA1 Сообщение Дата
Denton Liu 97b989ee3a apply.h: include missing header
When running `make hdr-check`, we got the following error messages:

	apply.h:146:22: error: use of undeclared identifier 'GIT_MAX_HEXSZ'
		char old_oid_prefix[GIT_MAX_HEXSZ + 1];
				    ^
	apply.h:147:22: error: use of undeclared identifier 'GIT_MAX_HEXSZ'
		char new_oid_prefix[GIT_MAX_HEXSZ + 1];
				    ^
	apply.h:151:33: error: array has incomplete element type 'struct object_id'
		struct object_id threeway_stage[3];
					       ^
	./strbuf.h:79:8: note: forward declaration of 'struct object_id'
	struct object_id;
	       ^
	3 errors generated.
	make: *** [apply.hco] Error 1

Include the missing "hash.h" header to fix these errors.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-28 14:04:16 +09:00
Alexandr Miloslavskiy fe0ed5d5e9 contrib/buildsystems: fix Visual Studio Debug configuration
Even though Debug configuration builds, the resulting build is incorrect
in a subtle way: it mixes up Debug and Release binaries, which in turn
causes hard-to-predict bugs.

In my case, when git calls iconv library, iconv sets 'errno' and git
then tests it, but in Debug and Release CRT those 'errno' are different
memory locations.

This patch addresses 3 connected bugs:
1) Typo in '\(Configuration)'. As a result, Debug configuration
   condition is always false and Release path is taken instead.
2) Regexp that replaced 'zlib.lib' with 'zlibd.lib' was only affecting
   the first occurrence. However, some projects have it listed twice.
   Previously this bug was hidden, because Debug path was never taken.
   I decided that avoiding double -lz in makefile is fragile and I'd
   better replace all occurrences instead.
3) In Debug, 'libcurl-d.lib' should be used instead of 'libcurl.lib'.
   Previously this bug was hidden, because Debug path was never taken.

Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-28 13:43:36 +09:00
SZEDER Gábor 2e09c01232 name-rev: avoid cutoff timestamp underflow
When 'git name-rev' is invoked with commit-ish parameters, it tries to
save some work, and doesn't visit commits older than the committer
date of the oldest given commit minus a one day worth of slop.  Since
our 'timestamp_t' is an unsigned type, this leads to a timestamp
underflow when the committer date of the oldest given commit is within
a day of the UNIX epoch.  As a result the cutoff timestamp ends up
far-far in the future, and 'git name-rev' doesn't visit any commits,
and names each given commit as 'undefined'.

Check whether subtracting the slop from the oldest committer date
would lead to an underflow, and use no cutoff in that case.  We don't
have a TIME_MIN constant, dddbad728c (timestamp_t: a new data type for
timestamps, 2017-04-26) didn't add one, so do it now.

Note that the type of the cutoff timestamp variable used to be signed
before 5589e87fd8 (name-rev: change a "long" variable to timestamp_t,
2017-05-20).  The behavior was still the same even back then, but the
underflow didn't happen when substracting the slop from the oldest
committer date, but when comparing the signed cutoff timestamp with
unsigned committer dates in name_rev().  IOW, this underflow bug is as
old as 'git name-rev' itself.

Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-28 13:36:04 +09:00
Denton Liu 8464f94aeb promisor-remote.h: drop extern from function declaration
During the creation of this file, each time a new function declaration
was introduced, it included an `extern`. However, starting from
554544276a (*.[ch]: remove extern from function declarations using
spatch, 2019-04-29), we've been actively trying to prevent externs from
being used in function declarations because they're unnecessary.

Remove these spurious `extern`s.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-28 13:03:08 +09:00
CB Bailey 75b2c15435 t4038: Remove non-portable '-a' option passed to test_cmp
Signed-off-by: CB Bailey <cbailey32@bloomberg.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-28 13:02:12 +09:00
Pedro Sousa 24c681794f doc: MyFirstContribution: fix cmd placement instructions
Using the pull command instead of push is more accurate when giving
instructions on placing the psuh command in alphabetical order.

Signed-off-by: Pedro Sousa <pedroteosousa@gmail.com>
Acked-by: Philip Oakley <philipoakley@iee.email>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-28 12:27:38 +09:00
SZEDER Gábor c46ebc2496 travis-ci: do not skip successfully tested trees in debug mode
Travis CI offers shell access to its virtual machine environment
running the build jobs, called "debug mode" [1].  After restarting a
build job in debug mode and logging in, the first thing I usually do
is to install dependencies, i.e. run './ci/install-dependencies.sh'.
This works just fine when I restarted a failed build job in debug
mode.  However, after restarting a successful build job in debug mode
our CI scripts get all clever, and exit without doing anything useful,
claiming that "This commit's tree has already been built and tested
successfully" [2].  Our CI scripts are right, and we do want to skip
building and testing already known good trees in "regular" CI builds.
In debug mode, however, this is a nuisiance, because one has to delete
the cache (or at least the 'good-trees' file in the cache) to proceed.

Let's update our CI scripts, in particular the common 'ci/lib.sh', to
not skip previously successfully built and tested trees in debug mode,
so all those scripts will do what there were supposed to do even when
a successful build job was restarted in debug mode.

[1] https://docs.travis-ci.com/user/running-build-in-debug-mode/
[2] 9cc2c76f5e (travis-ci: record and skip successfully built trees,
    2017-12-31)

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-28 12:26:13 +09:00
Andrey Mazo 26e3d1cbea .mailmap: update email address of Andrey Mazo
I don't have access to my old work email since 20 Apr 2019.
Replace with my personal email address.

Signed-off-by: Andrey Mazo <ahippo@yandex.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-20 22:21:28 -07:00
SZEDER Gábor 27ea41c0b4 t/helper: ignore only executable files
This patch conceptually reverts 44103f4197 (t/helper: ignore
everything but sources, 2017-12-12).  Back in those days we did have a
lot of separate test helper executables under 't/helper', and its
'.gitignore' did get out of sync every once in a while.

Since then, however, most of those separate executables were
integrated into a single 'test-tool' command [1], and new test helpers
are added as new subcommands, so the chances of that '.gitignore'
getting out of sync again are much lower.  And even if a contributor
were not careful enough and submits a patch that adds a new executable
under 't/helper' but forgets to update '.gitignore' accordingly, our
CI builds would catch it in a timely manner [2].

Ignoring everything but sources has the drawback that building an
older version of Git (e.g. during bisecting) creates all those
executables, and after going back to e.g. current 'master' the usual
cleanup commands like 'make clean' or 'git clean -fd' don't remove
them (the former doesn't know about them, and the latter doesn't
remove ignored files).

So let's ignore only the executable files under 't/helper/, i.e.
'test-tool' and the three other remaining executables that could not
be integrated into 'test-tool' (no need to ignore object files, as
they are already ignored by our toplevel '.gitignore').

[1] The topic starting with efd71f8913 (t/helper: add an empty
    test-tool program, 2018-03-24), and leading up to the merge commit
    27f25845cf (Merge branch 'nd/combined-test-helper', 2018-04-11).

[2] b92cb86ea1 (travis-ci: check that all build artifacts are
    .gitignore-d, 2017-12-31)

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-20 11:13:13 -07:00
René Scharfe 7bd97d6dff git: use COPY_ARRAY and MOVE_ARRAY in handle_alias()
Use the macro COPY_ARRAY to copy array elements and MOVE_ARRAY to do the
same for moving them backwards in an array with potential overlap.  The
result is shorter and safer, as it infers the element type automatically
and does a (very) basic type compatibility check for its first two
arguments.

These cases were missed by Coccinelle and contrib/coccinelle/array.cocci
because the type of the elements is "const char *", not "char *", and
the rules in the semantic patch cautiously insist on the sizeof operator
being used on exactly the same type to avoid generating transformations
that introduce subtle bugs into tricky code.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-20 11:11:26 -07:00
Jonathan Tan 83e3ad3b12 merge-recursive: symlink's descendants not in way
When the working tree has:
 - bar (directory)
 - bar/file (file)
 - foo (symlink to .)

(note that lstat() for "foo/bar" would tell us that it is a directory)

and the user merges a commit that deletes the foo symlink and instead
contains:
 - bar (directory, as above)
 - bar/file (file, as above)
 - foo (directory)
 - foo/bar (file)

the merge should happen without requiring user intervention. However,
this does not happen.

This is because dir_in_way(), when checking the working tree, thinks
that "foo/bar" is a directory. But a symlink should be treated much the
same as a file: since dir_in_way() is only checking to see if there is a
directory in the way, we don't want symlinks in leading paths to
sometimes cause dir_in_way() to return true.

Teach dir_in_way() to also check for symlinks in leading paths before
reporting whether a directory is in the way.

Helped-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-20 10:15:57 -07:00
Thomas Gummerer 34933d0eff stash: make sure to write refreshed cache
When converting stash into C, calls to 'git update-index --refresh'
were replaced with the 'refresh_cache()' function.  That is fine as
long as the index is only needed in-core, and not re-read from disk.

However in many cases we do actually need the refreshed index to be
written to disk, for example 'merge_recursive_generic()' discards the
in-core index before re-reading it from disk, and in the case of 'apply
--quiet', the 'refresh_cache()' we currently have is pointless without
writing the index to disk.

Always write the index after refreshing it to ensure there are no
regressions in this compared to the scripted stash.  In the future we
can consider avoiding the write where possible after making sure none
of the subsequent calls actually need the refreshed cache, and it is
not expected to be refreshed after stash exits or it is written
somewhere else already.

Reported-by: Jeff King <peff@peff.net>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-20 09:58:22 -07:00
Thomas Gummerer e080b34540 merge: use refresh_and_write_cache
Use the 'refresh_and_write_cache()' convenience function introduced in
the last commit, instead of refreshing and writing the index manually
in merge.c

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-20 09:58:22 -07:00
Thomas Gummerer 22184497a3 factor out refresh_and_write_cache function
Getting the lock for the index, refreshing it and then writing it is a
pattern that happens more than once throughout the codebase, and isn't
trivial to get right.  Factor out the refresh_and_write_cache function
from builtin/am.c to read-cache.c, so it can be re-used in other
places in a subsequent commit.

Note that we return different error codes for failing to refresh the
cache, and failing to write the index.  The current caller only cares
about failing to write the index.  However for other callers we're
going to convert in subsequent patches we will need this distinction.

Helped-by: Martin Ågren <martin.agren@gmail.com>
Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-20 09:58:21 -07:00
Garima Singh 7371612255 commit-graph: add --[no-]progress to write and verify
Add --[no-]progress to git commit-graph write and verify.
The progress feature was introduced in 7b0f229
("commit-graph write: add progress output", 2018-09-17) but
the ability to opt-out was overlooked.

Signed-off-by: Garima Singh <garima.singh@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-18 14:23:09 -07:00
Stephen P. Smith 47b27c96fa test_date.c: remove reference to GIT_TEST_DATE_NOW
Remove the reference to the GIT_TEST_DATE_NOW which is done in date.c.
We can't get rid of the "x" variable, since it serves as a generic
scratch variable for parsing later in the function.

Signed-off-by: Stephen P. Smith <ischis2@cox.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-18 14:15:01 -07:00
Junio C Hamano 253bfe49bd SubmittingPatches: git-gui has a new maintainer
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-18 13:57:13 -07:00
Hervé Beraud d17ae00c97 hg-to-git: make it compatible with both python3 and python2
Python 2 is EOL at the end of 2019, many distros and systems now
come with python 3 as their default version.

Rewrite features used in hg-to-git that are no longer supported in
Python 3, in such a way that an updated code can still be usable
with Python 2:

 - print is not a statement; use print() function instead.
 - dict.has_key(key) is no more; use "key in dict" instead.

Signed-off-by: Hervé Beraud <herveberaud.pro@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-18 12:03:05 -07:00
Junio C Hamano 4c86140027 Third batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-18 11:55:13 -07:00
Junio C Hamano f67bf53300 Merge branch 'jt/avoid-ls-refs-with-http'
The http transport lacked some optimization the native transports
learned to avoid unnecessary ref advertisement, which has been
corrected.

* jt/avoid-ls-refs-with-http:
  transport: teach all vtables to allow fetch first
  transport-helper: skip ls-refs if unnecessary
2019-09-18 11:50:10 -07:00
Junio C Hamano 627b826834 Merge branch 'md/list-objects-filter-combo'
The list-objects-filter API (used to create a sparse/lazy clone)
learned to take a combined filter specification.

* md/list-objects-filter-combo:
  list-objects-filter-options: make parser void
  list-objects-filter-options: clean up use of ALLOC_GROW
  list-objects-filter-options: allow mult. --filter
  strbuf: give URL-encoding API a char predicate fn
  list-objects-filter-options: make filter_spec a string_list
  list-objects-filter-options: move error check up
  list-objects-filter: implement composite filters
  list-objects-filter-options: always supply *errbuf
  list-objects-filter: put omits set in filter struct
  list-objects-filter: encapsulate filter components
2019-09-18 11:50:09 -07:00
Junio C Hamano b9ac6c59b8 Merge branch 'cc/multi-promisor'
Teach the lazy clone machinery that there can be more than one
promisor remote and consult them in order when downloading missing
objects on demand.

* cc/multi-promisor:
  Move core_partial_clone_filter_default to promisor-remote.c
  Move repository_format_partial_clone to promisor-remote.c
  Remove fetch-object.{c,h} in favor of promisor-remote.{c,h}
  remote: add promisor and partial clone config to the doc
  partial-clone: add multiple remotes in the doc
  t0410: test fetching from many promisor remotes
  builtin/fetch: remove unique promisor remote limitation
  promisor-remote: parse remote.*.partialclonefilter
  Use promisor_remote_get_direct() and has_promisor_remote()
  promisor-remote: use repository_format_partial_clone
  promisor-remote: add promisor_remote_reinit()
  promisor-remote: implement promisor_remote_get_direct()
  Add initial support for many promisor remotes
  fetch-object: make functions return an error code
  t0410: remove pipes after git commands
2019-09-18 11:50:09 -07:00
Junio C Hamano de67293e74 Merge branch 'sg/line-log-tree-diff-optim'
Optimize unnecessary full-tree diff away from "git log -L" machinery.

* sg/line-log-tree-diff-optim:
  line-log: avoid unnecessary full tree diffs
  line-log: extract pathspec parsing from line ranges into a helper function
2019-09-18 11:50:09 -07:00
Junio C Hamano 95486229e3 Merge branch 'sg/complete-configuration-variables'
Command line completion updates for "git -c var.name=val"

* sg/complete-configuration-variables:
  completion: complete config variables and values for 'git clone --config='
  completion: complete config variables names and values for 'git clone -c'
  completion: complete values of configuration variables after 'git -c var='
  completion: complete configuration sections and variable names for 'git -c'
  completion: split _git_config()
  completion: simplify inner 'case' pattern in __gitcomp()
  completion: use 'sort -u' to deduplicate config variable names
  completion: deduplicate configuration sections
  completion: add tests for 'git config' completion
  completion: complete more values of more 'color.*' configuration variables
  completion: fix a typo in a comment
2019-09-18 11:50:08 -07:00
Junio C Hamano f76bd8c6b1 Merge branch 'js/pre-merge-commit-hook'
A new "pre-merge-commit" hook has been introduced.

* js/pre-merge-commit-hook:
  merge: --no-verify to bypass pre-merge-commit hook
  git-merge: honor pre-merge-commit hook
  merge: do no-verify like commit
  t7503: verify proper hook execution
2019-09-18 11:50:08 -07:00
Junio C Hamano a2e524ecf3 Merge branch 'cb/curl-use-xmalloc'
Tell cURL library to use the same malloc() implementation, with the
xmalloc() wrapper, as the rest of the system, for consistency.

* cb/curl-use-xmalloc:
  http: use xmalloc with cURL
2019-09-18 11:50:08 -07:00
Junio C Hamano 128666753b Merge branch 'jk/drop-release-pack-memory'
xmalloc() used to have a mechanism to ditch memory and address
space resources as the last resort upon seeing an allocation
failure from the underlying malloc(), which made the code complex
and thread-unsafe with dubious benefit, as major memory resource
users already do limit their uses with various other mechanisms.
It has been simplified away.

* jk/drop-release-pack-memory:
  packfile: drop release_pack_memory()
2019-09-18 11:50:08 -07:00
Junio C Hamano 917a319ea5 Merge branch 'js/rebase-r-strategy'
"git rebase --rebase-merges" learned to drive different merge
strategies and pass strategy specific options to them.

* js/rebase-r-strategy:
  t3427: accelerate this test by using fast-export and fast-import
  rebase -r: do not (re-)generate root commits with `--root` *and* `--onto`
  t3418: test `rebase -r` with merge strategies
  t/lib-rebase: prepare for testing `git rebase --rebase-merges`
  rebase -r: support merge strategies other than `recursive`
  t3427: fix another incorrect assumption
  t3427: accommodate for the `rebase --merge` backend having been replaced
  t3427: fix erroneous assumption
  t3427: condense the unnecessarily repetitive test cases into three
  t3427: move the `filter-branch` invocation into the `setup` case
  t3427: simplify the `setup` test case significantly
  t3427: add a clarifying comment
  rebase: fold git-rebase--common into the -p backend
  sequencer: the `am` and `rebase--interactive` scripts are gone
  .gitignore: there is no longer a built-in `git-rebase--interactive`
  t3400: stop referring to the scripted rebase
  Drop unused git-rebase--am.sh
2019-09-18 11:50:07 -07:00
Junio C Hamano 7e1976e210 Merge branch 'master' of https://github.com/prati0100/git-gui
* 'master' of https://github.com/prati0100/git-gui:
  git-gui: add hotkey to toggle "Amend Last Commit"
  git-gui: add horizontal scrollbar to commit buffer
  git-gui: convert new/amend commit radiobutton to checkbutton
  git-gui: add hotkeys to set widget focus
  git-gui: allow undoing last revert
  git-gui: return early when patch fails to apply
  git-gui: allow reverting selected hunk
  git-gui: allow reverting selected lines
2019-09-18 11:22:11 -07:00
René Scharfe 4b3aa170d1 sha1_name: simplify strbuf handling in interpret_nth_prior_checkout()
Pass the target strbuf to the callback function grab_nth_branch_switch()
by reference so that it can add the result string directly instead of
having it put the string into a temporary strbuf first.  This gets rid
of an extra allocation and a string copy.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-18 11:19:06 -07:00
Alex Henrie 0d4304c124 doc: fix reference to --ignore-submodules
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-18 10:28:59 -07:00
Clément Chigot af78249463 contrib/svn-fe: fix shebang for svnrdump_sim.py
The shebang for a python script should be "/usr/bin/env python" and not
"/usr/bin/python". On some OSes like AIX, python default path is not under
"/usr/bin" ("/opt/freeware/bin" for AIX).

Note the main reason behind this change is that AIX rpm will add a
dependency on "/usr/bin/python" instead of "/usr/bin/env".

Signed-off-by: Clément Chigot <clement.chigot@atos.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-18 10:26:19 -07:00
Junio C Hamano 8a3a6817e2 Merge gitk to pick up emergency build fix
gitk: rename zh_CN.po to zh_cn.po
2019-09-17 14:59:18 -07:00
Denton Liu 2a4ac71ffb gitk: rename zh_CN.po to zh_cn.po
When running make from a clean environment, all of the *.po files should
be converted into *.msg files. After that, when make is run without any
changes, make should not do anything.

After beffae768a (gitk: Add Chinese (zh_CN) translation, 2017-03-11),
zh_CN.po was introduced. When make was run, a zh_cn.msg file was
generated (notice the lowercase). However, since make is case-sensitive,
it expects zh_CN.po to generate a zh_CN.msg file so make will keep
reattempting to generate a zh_CN.msg so successive make invocations
result in

    Generating catalog po/zh_cn.msg
    msgfmt --statistics --tcl po/zh_cn.po -l zh_cn -d po/
    317 translated messages.

happening continuously.

Rename zh_CN.po to zh_cn.po so that when make generates the zh_cn.msg
file, it will realize that it was successfully generated and only run
once.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 14:58:12 -07:00
Denton Liu 9027af58e2 Makefile: run coccicheck on more source files
Before, when running the "coccicheck" target, only the source files
which were being compiled would have been checked by Coccinelle.
However, just because we aren't compiling a source file doesn't mean we
have to exclude it from analysis. This will allow us to catch more
mistakes, in particular ones that affect Windows-only sources since
Coccinelle currently runs only on Linux.

Make the "coccicheck" target run on all C sources except for those that
are taken from some third-party source. We don't want to patch these
files since we want them to be as close to upstream as possible so that
it'll be easier to pull in upstream updates.

When running a build on Arch Linux with no additional flags provided,
after applying this patch, the following sources are now checked:

* block-sha1/sha1.c
* compat/access.c
* compat/basename.c
* compat/fileno.c
* compat/gmtime.c
* compat/hstrerror.c
* compat/memmem.c
* compat/mingw.c
* compat/mkdir.c
* compat/mkdtemp.c
* compat/mmap.c
* compat/msvc.c
* compat/pread.c
* compat/precompose_utf8.c
* compat/qsort.c
* compat/setenv.c
* compat/sha1-chunked.c
* compat/snprintf.c
* compat/stat.c
* compat/strcasestr.c
* compat/strdup.c
* compat/strtoimax.c
* compat/strtoumax.c
* compat/unsetenv.c
* compat/win32/dirent.c
* compat/win32/path-utils.c
* compat/win32/pthread.c
* compat/win32/syslog.c
* compat/win32/trace2_win32_process_info.c
* compat/win32mmap.c
* compat/winansi.c
* ppc/sha1.c

This also results in the following source now being excluded:

* compat/obstack.c

Instead of generating $(FOUND_C_SOURCES) from a
`$(shell $(FIND_SOURCE_FILES))` invocation, an alternative design was
considered which involved converting $(FIND_SOURCE_FILES) into
$(SOURCE_FILES) which would hold a list of filenames from the
$(FIND_SOURCE_FILES) invocation. We would simply filter `%.c` files into
$(ALL_C_SOURCES). $(SOURCE_FILES) would then be passed directly to the
etags, ctags and cscope commands. We can see from the following
invocation

	$ git ls-files '*.[hcS]' '*.sh' ':!*[tp][0-9][0-9][0-9][0-9]*' ':!contrib' | wc -c
	   12779

that the number of characters in this list would pose a problem on
platforms with short command-line length limits (such as CMD which has a
max of 8191 characters). As a result, we don't perform this change.

However, we can see that the same issue may apply when running
Coccinelle since $(COCCI_SOURCES) is also a list of filenames:

	if ! echo $(COCCI_SOURCES) | xargs $$limit \
		$(SPATCH) --sp-file $< $(SPATCH_FLAGS) \
		>$@+ 2>$@.log; \

This is justified since platforms that support Coccinelle generally have
reasonably long command-line length limits and so we are safe for the
foreseeable future.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 14:32:36 -07:00
Denton Liu 43f8c890fd Makefile: strip leading ./ in $(FIND_SOURCE_FILES)
Currently, $(FIND_SOURCE_FILES) has two modes: if `git ls-files` is
present, it will use that to enumerate the files in the repository; else
it will use `$(FIND) .` to enumerate the files in the directory.

There is a subtle difference between these two methods, however. With
ls-files, filenames don't have a leading `./` while with $(FIND), they
do. This does not currently pose a problem but in a future patch, we
will be using `filter-out` to process the list of files with the
assumption that there is no prefix.

Unify the two possible invocations in $(FIND_SOURCE_FILES) by using sed
to remove the `./` prefix in the $(FIND) case.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 14:32:36 -07:00
Denton Liu 5dedf7de53 Makefile: define THIRD_PARTY_SOURCES
Some files in our codebase are borrowed from other projects, and
minimally updated to suit our own needs. We'd sometimes need to tell
our own sources and these third-party sources apart for management
purposes (e.g. we may want to be less strict about coding style and
other issues on third-party files).

Define the $(MAKE) variable THIRD_PARTY_SOURCES that can be used to
match names of third-party sources.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 14:32:36 -07:00
Johannes Sixt 0eb7c37a8a diff, log doc: small grammer, format, and language fixes
- Replace "SHA-1" by "object name", the modern name for hashes.

- Correct a few grammar weaknesses.

- Do not accidentally format a phrase in teletype font where quotes are
  intended.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 12:14:06 -07:00
Johannes Sixt 6fae6bd518 diff, log doc: say "patch text" instead of "patches"
diff, log doc: say "patch text" instead of "patches"

A poster on Stackoverflow was confused that the documentation of git-log
promised to generate "patches" or "patch files" with -p, but there were
none to be found. Rewrite the corresponding paragraph to talk about
"patch text" to avoid the confusion.

Shorten the language to say "X does Y" in place of "X does not Z, but Y".

Cross-reference the referred-to commands like the rest of the file does.

Enumerate git-show because it includes the description as well.

Mention porcelain commands before plumbing commands because I guess that
the paragraph is read more frequently in their context.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Acked-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 12:13:27 -07:00
SZEDER Gábor 2bb74b53a4 Test the progress display
'progress.c' has seen a few fixes recently [1], and, unfortunately,
some of those fixes required further fixes [2].  It seems it's time to
have a few tests focusing on the subtleties of the progress display.

Add the 'test-tool progress' subcommand to help testing the progress
display, reading instructions from standard input and turning them
into calls to the display_progress() and display_throughput()
functions with the given parameters.

The progress display is, however, critically dependent on timing,
because it's only updated once every second or, if the toal is known
in advance, every 1%, and there is the throughput rate as well.  These
make the progress display far too undeterministic for testing as-is.
To address this, add a few testing-specific variables and functions to
'progress.c', allowing the the new test helper to:

  - Disable the triggered-every-second SIGALRM and set the
    'progress_update' flag explicitly based in the input instructions.
    This way the progress line will be updated deterministically when
    the test wants it to be updated.

  - Specify the time elapsed since start_progress() to make the
    throughput rate calculations deterministic.

Add the new test script 't0500-progress-display.sh' to check a few
simple cases with and without throughput, and that a shorter progress
line properly covers up the previously displayed line in different
situations.

[1] See commits 545dc345eb (progress: break too long progress bar
    lines, 2019-04-12) and 9f1fd84e15 (progress: clear previous
    progress update dynamically, 2019-04-12).
[2] 1aed1a5f25 (progress: avoid empty line when breaking the progress
    line, 2019-05-19)

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 09:39:16 -07:00
SZEDER Gábor bbf47568ad Revert "progress: use term_clear_line()"
This reverts commit 5b12e3123b (progress: use term_clear_line(),
2019-06-24), because covering up the entire last line while refreshing
the progress line caused unexpected problems during 'git
clone/fetch/push':

  $ git clone ssh://localhost/home/szeder/src/tmp/linux.git/
  Cloning into 'linux'...
  remote:
  remote:
  remote:
  remote: Enumerating objects: 999295

The length of the progress bar line can shorten when it includes
throughput and the unit changes, or when its length exceeds the width
of the terminal and is broken into two lines.  In these cases the
previously displayed longer progress line should be covered up,
because otherwise the leftover characters from the previous progress
line make the output look weird [1].  term_clear_line() makes this
quite simple, as it covers up the entire last line either by using an
ANSI control sequence or by printing a terminal width worth of space
characters, depending on whether the terminal is smart or dumb.

Unfortunately, when accessing a remote repository via any non-local
protocol the remote 'git receive-pack/upload-pack' processes can't
possibly have any idea about the local terminal (smart of dumb? how
wide?) their progress will end up on.  Consequently, they assume the
worst, i.e. standard-width dumb terminal, and print 80 spaces to cover
up the previously displayed progress line.  The local 'git
clone/fetch/push' processes then display the remote's progress,
including these coverup spaces, with the 'remote: ' prefix, resulting
in a total line length of 88 characters.  If the local terminal is
narrower than that, then the coverup gets line-wrapped, and after that
the CR at the end doesn't return to the beginning of the progress
line, but to the first column of its last line, resulting in those
repeated 'remote: <many-spaces>' lines.

By reverting 5b12e3123b (progress: use term_clear_line(),
2019-06-24) we won't cover up the entire last line, but go back to
comparing the length of the current progress bar line with the
previous one, and cover up as many characters as needed.

[1] See commits 545dc345eb (progress: break too long progress bar
    lines, 2019-04-12) and 9f1fd84e15 (progress: clear previous
    progress update dynamically, 2019-04-12).

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 09:39:16 -07:00
Denton Liu cf6a2d2557 Makefile: strip leading ./ in $(LIB_H)
Currently, $(LIB_H) is generated from two modes: if `git ls-files` is
present, it will use that to enumerate the files in the repository; else
it will use `$(FIND) .` to enumerate the files in the directory.

There is a subtle difference between these two methods, however. With
ls-files, filenames don't have a leading `./` while with $(FIND), they
do. This results in $(CHK_HDRS) having to substitute out the leading
`./` before it uses $(LIB_H).

Unify the two possible values in $(LIB_H) by using patsubst to remove the
`./` prefix at its definition.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-17 09:13:02 -07:00
Masaya Suzuki b7e2d8bca5 fetch: use oidset to keep the want OIDs for faster lookup
During git-fetch, the client checks if the advertised tags' OIDs are
already in the fetch request's want OID set. This check is done in a
linear scan. For a repository that has a lot of refs, repeating this
scan takes 15+ minutes. In order to speed this up, create a oid_set for
other refs' OIDs.

Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-16 13:02:50 -07:00
René Scharfe 689a146c91 commit-graph: use commit_list_count()
Let commit_list_count() count the number of parents instead of
duplicating it.  Also store the result in an unsigned int, as that's
what the function returns, and the count is never negative.

Signed-off-by: René Scharfe <l.s.r@web.de>
Acked-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-16 13:00:50 -07:00
René Scharfe 59fa5f5a25 sha1-name: check for overflow of N in "foo^N" and "foo~N"
Reject values that don't fit into an int, as get_parent() and
get_nth_ancestor() cannot handle them.  That's better than potentially
returning a random object.

If this restriction turns out to be too tight then we can switch to a
wider data type, but we'd still have to check for overflow.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-16 12:50:33 -07:00
René Scharfe a678df1bf9 rev-parse: demonstrate overflow of N for "foo^N" and "foo~N"
If the number gets too high for an int, weird things may happen, as
signed overflows are undefined.  Add a test to show this; rev-parse
"sucessfully" interprets 100000000000000000000000000000000 to be the
same as 0, at least on x64 with GCC 9.2.1 and Clang 8.0.1, which is
obviously bogus.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-16 12:50:27 -07:00
Jeff King a4cafc7379 list-objects-filter: use empty string instead of NULL for sparse "base"
We use add_excludes_from_blob_to_list() to parse a sparse blob. Since
we don't have a base path, we pass NULL and 0 for the base and baselen,
respectively. But the rest of the exclude code passes a literal empty
string instead of NULL for this case. And indeed, we eventually end up
with match_pathname() calling fspathncmp(), which then calls the system
strncmp(path, base, baselen).

This works on many platforms, which notice that baselen is 0 and do not
look at the bytes of "base" at all. But it does violate the C standard,
and building with SANITIZE=undefined will complain. You can also see it
by instrumenting fspathncmp like this:

	diff --git a/dir.c b/dir.c
	index d021c908e5..4bb3d3ec96 100644
	--- a/dir.c
	+++ b/dir.c
	@@ -71,6 +71,8 @@ int fspathcmp(const char *a, const char *b)

	 int fspathncmp(const char *a, const char *b, size_t count)
	 {
	+	if (!a || !b)
	+		BUG("null fspathncmp arguments");
	 	return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
	 }

We could perhaps be more defensive in match_pathname(), but even if we
did so, it makes sense for this code to match the rest of the exclude
callers.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-16 12:47:51 -07:00
Jon Simons cf34337f98 list-objects-filter: give a more specific error sparse parsing error
The sparse:oid filter has two error modes: we might fail to resolve the
name to an OID, or we might fail to parse the contents of that OID. In
the latter case, let's give a less generic error message, and mention
the OID we did find.

While we're here, let's also mark both messages as translatable.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-16 12:47:45 -07:00
Jeff King 4c96a77594 list-objects-filter: delay parsing of sparse oid
The list-objects-filter code has two steps to its initialization:

  1. parse_list_objects_filter() makes sure the spec is a filter we know
     about and is syntactically correct. This step is done by "rev-list"
     or "upload-pack" that is going to apply a filter, but also by "git
     clone" or "git fetch" before they send the spec across the wire.

  2. list_objects_filter__init() runs the type-specific initialization
     (using function pointers established in step 1). This happens at
     the start of traverse_commit_list_filtered(), when we're about to
     actually use the filter.

It's a good idea to parse as much as we can in step 1, in order to catch
problems early (e.g., a blob size limit that isn't a number). But one
thing we _shouldn't_ do is resolve any oids at that step (e.g., for
sparse-file contents specified by oid). In the case of a fetch, the oid
has to be resolved on the remote side.

The current code does resolve the oid during the parse phase, but
ignores any error (which we must do, because we might just be sending
the spec across the wire). This leads to two bugs:

  - if we're not in a repository (e.g., because it's git-clone parsing
    the spec), then we trigger a BUG() trying to resolve the name

  - if we did hit the error case, we still have to notice that later and
    bail. The code path in rev-list handles this, but the one in
    upload-pack does not, leading to a segfault.

We can fix both by moving the oid resolution into the sparse-oid init
function. At that point we know we have a repository (because we're
about to traverse), and handling the error there fixes the segfault.

As a bonus, we can drop the NULL sparse_oid_value check in rev-list,
since this is now handled in the sparse-oid-filter init function.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-16 12:47:37 -07:00
Jon Simons 72de5895ed t5616: test cloning/fetching with sparse:oid=<oid> filter
We test in t5317 that "sparse:oid" filters work with rev-list, but
there's no coverage at all confirming that they work with a fetch or
clone (and in fact, there are several bugs). Let's do a basic test that
a clone fetches the correct objects.

[jk: extracted from Jon's earlier fix patches. I also simplified the
     setup down to a single sparse file, and I added checks that we got the
     right blobs]

Signed-off-by: Jon Simons <jon@jonsimons.org>
Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-16 12:47:17 -07:00