Commit Graph

2315 Commits

Author SHA1 Message Date
Nguyễn Thái Ngọc Duy
5d14258b36 Makefile: add missing dependency for command-list.h
Commit 3ac68a93fd (help: add --config to list all available config -
2018-05-26) makes generate-cmdlist.sh adds a new input source
config.txt but it's not a Makefile dependency. Any changes in
config.txt will not trigger command-list.h regeneration and the config
list in this file becomes outdated. Correct the dependency.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-06 13:33:28 -07:00
Junio C Hamano
17b3e51505 Merge branch 'nd/command-list' into nd/complete-config-vars
* nd/command-list:
  completion: allow to customize the completable command list
  completion: add and use --list-cmds=alias
  completion: add and use --list-cmds=nohelpers
  Move declaration for alias.c to alias.h
  completion: reduce completable command list
  completion: let git provide the completable command list
  command-list.txt: documentation and guide line
  help: use command-list.txt for the source of guides
  help: add "-a --verbose" to list all commands with synopsis
  git: support --list-cmds=list-<category>
  completion: implement and use --list-cmds=main,others
  git --list-cmds: collect command list in a string_list
  git.c: convert --list-* to --list-cmds=*
  Remove common-cmds.h
  help: use command-list.h for common command list
  generate-cmds.sh: export all commands to command-list.h
  generate-cmds.sh: factor out synopsis extract code
2018-05-29 14:51:14 +09:00
Nguyễn Thái Ngọc Duy
1b81d8cb19 help: use command-list.txt for the source of guides
The help command currently hard codes the list of guides and their
summary in C. Let's move this list to command-list.txt. This lets us
extract summary lines from Documentation/git*.txt. This also
potentially lets us list guides in git.txt, but I'll leave that for
now.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-21 13:23:14 +09:00
Nguyễn Thái Ngọc Duy
60f487ac0e Remove common-cmds.h
After the last patch, common-cmds.h is no longer used (and it was
actually broken). Remove all related code. command-list.h will take
its place from now on.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-10 19:52:47 +09:00
Nguyễn Thái Ngọc Duy
cfb22a02ab help: use command-list.h for common command list
The previous commit added code generation for all_cmd_desc[] which
includes almost everything we need to generate common command list.
Convert help code to use that array instead and drop common_cmds[] array.

The description of each common command group is removed from
command-list.txt. This keeps this file format simpler. common-cmds.h
will not be generated correctly after this change due to the
command-list.txt format change. But it does not matter and
common-cmds.h will be removed.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-10 19:52:47 +09:00
Nguyễn Thái Ngọc Duy
f318d73915 generate-cmds.sh: export all commands to command-list.h
The current generate-cmds.sh generates just enough to print "git help"
output. That is, it only extracts help text for common commands.

The script is now updated to extract help text for all commands and
keep command classification a new file, command-list.h. This will be
useful later:

- "git help -a" could print a short summary of all commands instead of
  just the common ones.

- "git" could produce a list of commands of one or more category. One
  of its use is to reduce another command classification embedded in
  git-completion.bash.

The new file can be generated but is not used anywhere yet. The plan
is we migrate away from common-cmds.h. Then we can kill off
common-cmds.h build rules and generation code (and also delete
duplicate content in command-list.h which we keep for now to not mess
generate-cmds.sh up too much).

PS. The new fixed column requirement on command-list.txt is
technically not needed. But it helps simplify the code a bit at this
stage. We could lift this restriction later if we want to.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-10 19:52:47 +09:00
Junio C Hamano
71c848bb28 Merge branch 'js/runtime-prefix'
* js/runtime-prefix:
  Avoid multiple PREFIX definitions
  git_setup_gettext: plug memory leak
  gettext: avoid initialization if the locale dir is not present
2018-05-08 15:59:34 +09:00
Junio C Hamano
e998e7a188 Merge branch 'nd/warn-more-for-devs'
The build procedure "make DEVELOPER=YesPlease" learned to enable a
bit more warning options depending on the compiler used to help
developers more.  There also is "make DEVOPTS=tokens" knob
available now, for those who want to help fixing warnings we
usually ignore, for example.

* nd/warn-more-for-devs:
  Makefile: add a DEVOPTS to get all of -Wextra
  Makefile: add a DEVOPTS to suppress -Werror under DEVELOPER
  Makefile: detect compiler and enable more warnings in DEVELOPER=1
  connect.c: mark die_initial_contact() NORETURN
2018-05-08 15:59:21 +09:00
Junio C Hamano
b10edb2df5 Merge branch 'ds/commit-graph'
Precompute and store information necessary for ancestry traversal
in a separate file to optimize graph walking.

* ds/commit-graph:
  commit-graph: implement "--append" option
  commit-graph: build graph from starting commits
  commit-graph: read only from specific pack-indexes
  commit: integrate commit graph with commit parsing
  commit-graph: close under reachability
  commit-graph: add core.commitGraph setting
  commit-graph: implement git commit-graph read
  commit-graph: implement git-commit-graph write
  commit-graph: implement write_commit_graph()
  commit-graph: create git-commit-graph builtin
  graph: add commit graph design document
  commit-graph: add format document
  csum-file: refactor finalize_hashfile() method
  csum-file: rename hashclose() to finalize_hashfile()
2018-05-08 15:59:20 +09:00
Junio C Hamano
92034a9cd5 Merge branch 'dj/runtime-prefix'
A build-time option has been added to allow Git to be told to refer
to its associated files relative to the main binary, in the same
way that has been possible on Windows for quite some time, for
Linux, BSDs and Darwin.

* dj/runtime-prefix:
  Makefile: quote $INSTLIBDIR when passing it to sed
  Makefile: remove unused @@PERLLIBDIR@@ substitution variable
  mingw/msvc: use the new-style RUNTIME_PREFIX helper
  exec_cmd: provide a new-style RUNTIME_PREFIX helper for Windows
  exec_cmd: RUNTIME_PREFIX on some POSIX systems
  Makefile: add Perl runtime prefix support
  Makefile: generate Perl header from template file
2018-05-08 15:59:17 +09:00
Junio C Hamano
c988f6425a Merge branch 'ab/simplify-perl-makefile'
Recent simplification of build procedure forgot a bit of tweak to
the build procedure of contrib/mw-to-git/

* ab/simplify-perl-makefile:
  Makefile: mark perllibdir as a .PHONY target
  perl: fix installing modules from contrib
2018-05-08 15:59:16 +09:00
Junio C Hamano
9bfa0f9be3 Merge branch 'bw/protocol-v2'
The beginning of the next-gen transfer protocol.

* bw/protocol-v2: (35 commits)
  remote-curl: don't request v2 when pushing
  remote-curl: implement stateless-connect command
  http: eliminate "# service" line when using protocol v2
  http: don't always add Git-Protocol header
  http: allow providing extra headers for http requests
  remote-curl: store the protocol version the server responded with
  remote-curl: create copy of the service name
  pkt-line: add packet_buf_write_len function
  transport-helper: introduce stateless-connect
  transport-helper: refactor process_connect_service
  transport-helper: remove name parameter
  connect: don't request v2 when pushing
  connect: refactor git_connect to only get the protocol version once
  fetch-pack: support shallow requests
  fetch-pack: perform a fetch using v2
  upload-pack: introduce fetch server command
  push: pass ref prefixes when pushing
  fetch: pass ref prefixes when fetching
  ls-remote: pass ref prefixes when requesting a remote's refs
  transport: convert transport_get_remote_refs to take a list of ref prefixes
  ...
2018-05-08 15:59:16 +09:00
Junio C Hamano
cac7a2ba7b Merge branch 'jm/mem-pool'
An reusable "memory pool" implementation has been extracted from
fast-import.c, which in turn has become the first user of the
mem-pool API.

* jm/mem-pool:
  mem-pool: move reusable parts of memory pool into its own file
  fast-import: introduce mem_pool type
  fast-import: rename mem_pool type to mp_block
2018-04-25 13:29:06 +09:00
Junio C Hamano
89e5aa3dff Merge branch 'sb/filenames-with-dashes'
Rename bunch of source files to more consistently use dashes
instead of underscores to connect words.

* sb/filenames-with-dashes:
  replace_object.c: rename to use dash in file name
  sha1_file.c: rename to use dash in file name
  sha1_name.c: rename to use dash in file name
  exec_cmd: rename to use dash in file name
  unicode_width.h: rename to use dash in file name
  write_or_die.c: rename to use dashes in file name
2018-04-25 13:29:05 +09:00
Junio C Hamano
ff6eb825f0 Merge branch 'jk/relative-directory-fix'
Some codepaths, including the refs API, get and keep relative
paths, that go out of sync when the process does chdir(2).  The
chdir-notify API is introduced to let these codepaths adjust these
cached paths to the new current directory.

* jk/relative-directory-fix:
  refs: use chdir_notify to update cached relative paths
  set_work_tree: use chdir_notify
  add chdir-notify API
  trace.c: export trace_setup_key
  set_git_dir: die when setenv() fails
2018-04-25 13:28:52 +09:00
Philip Oakley
4d5b4c2475 Avoid multiple PREFIX definitions
The short and sweet PREFIX can be confused when used in many places.

Rename both usages to better describe their purpose. EXEC_CMD_PREFIX is
used in full to disambiguate it from the nearby GIT_EXEC_PATH.

The PREFIX in sideband.c, while nominally independant of the exec_cmd
PREFIX, does reside within libgit[1], so the definitions would clash
when taken together with a PREFIX given on the command line for use by
exec_cmd.c.

Noticed when compiling Git for Windows using MSVC/Visual Studio [1] which
reports the conflict beteeen the command line definition and the
definition in sideband.c within the libgit project.

[1] the libgit functions are brought into a single sub-project
within the Visual Studio construction script provided in contrib,
and hence uses a single command for both exec_cmd.c and sideband.c.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-24 11:12:32 +09:00
Jonathan Nieder
64f982b8a7 Makefile: quote $INSTLIBDIR when passing it to sed
f6a0ad4b (Makefile: generate Perl header from template file,
2018-04-10) moved code for generating the 'use lib' lines at the top
of perl scripts from the $(SCRIPT_PERL_GEN) rule to a separate
GIT-PERL-HEADER rule.

This rule first populates INSTLIBDIR and then substitutes it into the
GIT-PERL-HEADER using sed:

	INSTLIBDIR=... something ...
	sed -e 's=@@INSTLIBDIR@@='$$INSTLIBDIR'=g' $< > $@

Because $INSTLIBDIR is not surrounded by double quotes, the shell
splits it at each space, causing errors if INSTLIBDIR contains an $IFS
character:

 sed: 1: "s=@@INSTLIBDIR@@=/usr/l ...": unescaped newline inside substitute pattern

Add back the missing double-quotes to make it work again.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-24 10:59:29 +09:00
Jonathan Nieder
90df2173f2 Makefile: remove unused @@PERLLIBDIR@@ substitution variable
Junio noticed that this variable is not quoted correctly when it is
passed to sed.  As a shell-quoted string, it should be inside
single-quotes like $(perllibdir_relative_SQ), not outside them like
$INSTLIBDIR.

In fact, this substitution variable is not used.  Simplify by removing
it.

Reported-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-24 10:58:18 +09:00
Christian Hesse
d8698987f3 Makefile: mark perllibdir as a .PHONY target
This target should be marked as .PHONY, just like other targets that
exist only for their side effects that do not create filesystem
entities with the same name.

Signed-off-by: Christian Hesse <mail@eworm.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-19 06:45:06 +09:00
Ævar Arnfjörð Bjarmason
26d2e4fb22 Makefile: add a DEVOPTS to get all of -Wextra
Change DEVOPTS to understand a "extra-all" option. When the DEVELOPER
flag is enabled we turn on -Wextra, but manually switch some of the
warnings it turns on off.

This is because we have many existing occurrences of them in the code
base. This mode will stop the suppression, let the developer see and
decide whether to  fix them.

This change is a slight alteration of Nguyễn Thái Ngọc Duy
EAGER_DEVELOPER mode patch[1]

1. "[PATCH v3 3/3] Makefile: add EAGER_DEVELOPER
    mode" (<20180329150322.10722-4-pclouds@gmail.com>;
    https://public-inbox.org/git/20180329150322.10722-4-pclouds@gmail.com/)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-16 13:54:53 +09:00
Ævar Arnfjörð Bjarmason
99f763baf5 Makefile: add a DEVOPTS to suppress -Werror under DEVELOPER
Add a DEVOPTS variable that'll be used to tweak the behavior of
DEVELOPER.

I've long wanted to use DEVELOPER=1 in my production builds, but on
some old systems I still get warnings, and thus the build would
fail. However if the build/tests fail for some other reason, it would
still be useful to scroll up and see what the relevant code is warning
about.

This change allows for that. Now setting DEVELOPER will set -Werror as
before, but if DEVOPTS=no-error is provided is set you'll get the same
warnings, but without -Werror.

Helped-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-16 13:54:53 +09:00
Nguyễn Thái Ngọc Duy
1da1580e4c Makefile: detect compiler and enable more warnings in DEVELOPER=1
The set of extra warnings we enable when DEVELOPER has to be
conservative because we can't assume any compiler version the
developer may use. Detect the compiler version so we know when it's
safe to enable -Wextra and maybe more.

These warning settings are mostly from my custom config.mak a long
time ago when I tried to enable as many warnings as possible that can
still build without showing warnings. Some of those warnings are
probably worth fixing instead of just suppressing in future.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-16 13:54:53 +09:00
Jameson Miller
065feab4eb mem-pool: move reusable parts of memory pool into its own file
This moves the reusable parts of the memory pool logic used by
fast-import.c into its own file for use by other components.

Signed-off-by: Jameson Miller <jamill@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-12 11:55:20 +09:00
Stefan Beller
11bc058ce6 replace_object.c: rename to use dash in file name
This is more consistent with the project style. The majority of
Git's source files use dashes in preference to underscores in their file
names.

Noticed while adding a header corresponding to this file.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
2018-04-11 18:11:00 +09:00
Stefan Beller
fc1395f4a4 sha1_file.c: rename to use dash in file name
This is more consistent with the project style. The majority of Git's
source files use dashes in preference to underscores in their file names.

Signed-off-by: Stefan Beller <sbeller@google.com>
2018-04-11 18:11:00 +09:00
Stefan Beller
e5e5e08832 sha1_name.c: rename to use dash in file name
This is more consistent with the project style. The majority of Git's
source files use dashes in preference to underscores in their file names.

Signed-off-by: Stefan Beller <sbeller@google.com>
2018-04-11 18:11:00 +09:00
Stefan Beller
d807c4a01d exec_cmd: rename to use dash in file name
This is more consistent with the project style. The majority of Git's
source files use dashes in preference to underscores in their file names.

Signed-off-by: Stefan Beller <sbeller@google.com>
2018-04-11 18:11:00 +09:00
Stefan Beller
fa2656f1da write_or_die.c: rename to use dashes in file name
This is more consistent with the project style. The majority of Git's
source files use dashes in preference to underscores in their file names.

Signed-off-by: Stefan Beller <sbeller@google.com>
2018-04-11 18:11:00 +09:00
Johannes Schindelin
c1be1cb7ea exec_cmd: provide a new-style RUNTIME_PREFIX helper for Windows
The RUNTIME_PREFIX feature comes from Git for Windows, but it was
enhanced to allow support for other platforms. While changing the
original idea, the concept was also improved by not forcing argv[0] to
be adjusted.

Let's allow the same for Windows by implementing a helper just as for
the other platforms.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-11 18:10:28 +09:00
Dan Jacques
226c0ddd0d exec_cmd: RUNTIME_PREFIX on some POSIX systems
Enable Git to resolve its own binary location using a variety of
OS-specific and generic methods, including:

- procfs via "/proc/self/exe" (Linux)
- _NSGetExecutablePath (Darwin)
- KERN_PROC_PATHNAME sysctl on BSDs.
- argv0, if absolute (all, including Windows).

This is used to enable RUNTIME_PREFIX support for non-Windows systems,
notably Linux and Darwin. When configured with RUNTIME_PREFIX, Git will
do a best-effort resolution of its executable path and automatically use
this as its "exec_path" for relative helper and data lookups, unless
explicitly overridden.

Small incidental formatting cleanup of "exec_cmd.c".

Signed-off-by: Dan Jacques <dnj@google.com>
Thanks-to: Robbie Iannucci <iannucci@google.com>
Thanks-to: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-11 18:10:28 +09:00
Dan Jacques
07d90eadb5 Makefile: add Perl runtime prefix support
Broaden the RUNTIME_PREFIX flag to configure Git's Perl scripts to
locate the Git installation's Perl support libraries by resolving
against the script's path, rather than hard-coding that path at
build-time. Hard-coding at build time worked on previous
RUNTIME_PREFIX configurations (i.e., Windows) because the Perl
scripts were run within a virtual filesystem whose paths were
consistent regardless of the location of the actual installation.
This will no longer be the case for non-Windows RUNTIME_PREFIX users.

When enabled, RUNTIME_PREFIX now requires Perl's system paths to be
expressed relative to a common installation directory in the Makefile,
and uses that relationship to locate support files based on the known
starting point of the script being executed, much like RUNTIME_PREFIX
does for the Git binary.

This change enables Git's Perl scripts to work when their Git installation
is relocated or moved to another system, even when they are not in a
virtual filesystem environment.

Signed-off-by: Dan Jacques <dnj@google.com>
Thanks-to: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Thanks-to: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-11 18:09:56 +09:00
Dan Jacques
f6a0ad4be7 Makefile: generate Perl header from template file
Currently, the generated Perl script headers are emitted by commands in
the Makefile. This mechanism restricts options to introduce alternative
header content, needed by Perl runtime prefix support, and obscures the
origin of the Perl script header.

Change the Makefile to generate a header by processing a template file and
move the header content into the "perl/" subdirectory. The generated
header content will now be stored in the "GIT-PERL-HEADER" file. This
allows the content of the Perl header to be controlled by changing the path
of the template in the Makefile.

Signed-off-by: Dan Jacques <dnj@google.com>
Thanks-to: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Thanks-to: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-11 18:09:56 +09:00
Junio C Hamano
27f25845cf Merge branch 'nd/combined-test-helper'
Small test-helper programs have been consolidated into a single
binary.

* nd/combined-test-helper: (36 commits)
  t/helper: merge test-write-cache into test-tool
  t/helper: merge test-wildmatch into test-tool
  t/helper: merge test-urlmatch-normalization into test-tool
  t/helper: merge test-subprocess into test-tool
  t/helper: merge test-submodule-config into test-tool
  t/helper: merge test-string-list into test-tool
  t/helper: merge test-strcmp-offset into test-tool
  t/helper: merge test-sigchain into test-tool
  t/helper: merge test-sha1-array into test-tool
  t/helper: merge test-scrap-cache-tree into test-tool
  t/helper: merge test-run-command into test-tool
  t/helper: merge test-revision-walking into test-tool
  t/helper: merge test-regex into test-tool
  t/helper: merge test-ref-store into test-tool
  t/helper: merge test-read-cache into test-tool
  t/helper: merge test-prio-queue into test-tool
  t/helper: merge test-path-utils into test-tool
  t/helper: merge test-online-cpus into test-tool
  t/helper: merge test-mktemp into test-tool
  t/helper: merge (unused) test-mergesort into test-tool
  ...
2018-04-11 13:09:56 +09:00
Christian Hesse
cfb3a47cad perl: fix installing modules from contrib
Commit 20d2a30f (Makefile: replace perl/Makefile.PL with simple make rules)
removed a target that allowed Makefiles from contrib/ to get the correct
install path. This introduces a new target for main Makefile and fixes
installation for Mediawiki module.

v2: Pass prefix as that can have influence as well, add single quotes
    for _SQ variant.

Signed-off-by: Christian Hesse <mail@eworm.de>
2018-04-11 10:29:03 +09:00
Junio C Hamano
a26e1f4b59 Merge branch 'ab/install-symlinks'
The build procedure learned to optionally use symbolic links
(instead of hardlinks and copies) to install "git-foo" for built-in
commands, whose binaries are all identical.

* ab/install-symlinks:
  Makefile: optionally symlink libexec/git-core binaries to bin/git
  Makefile: add a gitexecdir_relative variable
  Makefile: fix broken bindir_relative variable
2018-04-10 08:25:44 +09:00
Junio C Hamano
cac5351363 Merge branch 'ab/pcre-v2'
Git can be built to use either v1 or v2 of the PCRE library, and so
far, the build-time configuration USE_LIBPCRE=YesPlease instructed
the build procedure to use v1, but now it means v2.  USE_LIBPCRE1
and USE_LIBPCRE2 can be used to explicitly choose which version to
use, as before.

* ab/pcre-v2:
  Makefile: make USE_LIBPCRE=YesPlease mean v2, not v1
  configure: detect redundant --with-libpcre & --with-libpcre1
  configure: fix a regression in PCRE v1 detection
2018-04-10 08:25:43 +09:00
Derrick Stolee
08fd81c9b6 commit-graph: implement write_commit_graph()
Teach Git to write a commit graph file by checking all packed objects
to see if they are commits, then store the file in the given object
directory.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-02 14:27:38 -07:00
Derrick Stolee
4ce58ee38d commit-graph: create git-commit-graph builtin
Teach git the 'commit-graph' builtin that will be used for writing and
reading packed graph files. The current implementation is mostly
empty, except for an '--object-dir' option.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-04-02 14:27:38 -07:00
Jeff King
2b5ed37365 add chdir-notify API
If one part of the code does a permanent chdir(), then this
invalidates any relative paths that may be held by other
parts of the code. For example, setup_work_tree() moves us
to the top of the working tree, which may invalidate a
previously stored relative gitdir.

We've hacked around this case by teaching setup_work_tree()
to re-run set_git_dir() with an adjusted path, but this
stomps all over the idea of module boundaries.
setup_work_tree() shouldn't have to know all of the places
that need to be fed an adjusted path. And indeed, there's at
least one other place (the refs code) which needs adjusting.

Let's provide an API to let code that stores relative paths
"subscribe" to updates to the current working directory.
This means that callers of chdir() don't need to know about
all subscribers ahead of time; they can simply consult a
dynamically built list.

Note that our helper function to reparent relative paths
uses the simple remove_leading_path(). We could in theory
use the much smarter relative_path(), but that led to some
problems as described in 41894ae3a3 (Use simpler
relative_path when set_git_dir, 2013-10-14). Since we're
aiming to replace the setup_work_tree() code here, let's
follow its lead.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-30 12:49:57 -07:00
Nguyễn Thái Ngọc Duy
c81f843d09 t/helper: merge test-write-cache into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
0489289de2 t/helper: merge test-wildmatch into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
599fbd8733 t/helper: merge test-urlmatch-normalization into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
112edd6abe t/helper: merge test-subprocess into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
b618821306 t/helper: merge test-submodule-config into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
c932a5ff28 t/helper: merge test-string-list into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
1a5f3d7022 t/helper: merge test-strcmp-offset into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
e154a6f3de t/helper: merge test-sigchain into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
aa218dffcc t/helper: merge test-sha1-array into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
ff5fb8b034 t/helper: merge test-scrap-cache-tree into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00
Nguyễn Thái Ngọc Duy
ae6a51f5a1 t/helper: merge test-run-command into test-tool
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-27 08:45:47 -07:00