Commit Graph

2920 Commits

Author SHA1 Message Date
Johannes Schindelin
4b88f13369 vcxproj: also link-or-copy builtins
The problem with not having, say, git-receive-pack.exe after a full
build is that the test suite will then happily use the *installed*
git-receive-pack.exe because it finds nothing else.

Absolutely not what we want. We want to have confidence that our test
covers the MSVC-built Git executables, and not some random stuff.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:53 +01:00
Johannes Schindelin
823781ed63 msvc: add a Makefile target to pre-generate the VS solution
The entire idea of generating the VS solution makes only sense if we
generate it via Continuous Integration; otherwise potential users would
still have to download the entire Git for Windows SDK.

So let's just add a target in the Makefile that can be used to generate
said solution; The generated files will then be committed so that they
can be pushed to a branch ready to check out by Visual Studio users.

To make things even more useful, we also generate and commit other files
that are required to run the test suite, such as templates and
bin-wrappers: with this, developers can run the test suite in a regular
Git Bash (that is part of a regular Git for Windows installation) after
building the solution in Visual Studio.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:53 +01:00
Johannes Schindelin
f4b379d423 contrib/buildsystems: add a backend for modern Visual Studio versions
Based on the previous patch series to be able to compile Git using
Visual C++ from the command-line, this patch offers to generate project
definitions for Visual Studio, so that Git can be developed in a modern
IDE.

Based on the generator for Visual Studio versions <= 2008 (which used
.sln/.vcproj files), this patch copy-edits the generator of the .vcproj
files to a new generator that produces .vcxproj files ready for Visual
Studio 2010 and later (or MSBuild).

As the vcpkg system (which is used to build Git's dependencies) cannot
run in parallel (it does not lock, wreaking havoc with files being
accessed and written at the same time, letting the vcpkg processes
stumble over each others' toes), we make libgit the root of the project
dependency tree and initialize the vcpkg system in this project's
PreBuildEvent.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:52 +01:00
Johannes Schindelin
3fb8af4dbc contrib/buildsystems: error out on unknown option
One time too many did this developer call the `generate` script passing
a `--make-out=<PATH>` option that was happily ignored (because there
should be a space, not an equal sign, between `--make-out` and the
path).

And one time too many, this script not only ignored it but did not even
complain. Let's fix that.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:52 +01:00
Johannes Schindelin
5eebcab125 contrib/buildsystems: handle options starting with a slash
With the recent changes to allow building with MSVC=1, we now pass the
/OPT:REF option to the compiler. This confuses the parser that wants to
turn the output of a dry run into project definitions for QMake and Visual
Studio:

	Unhandled link option @ line 213: /OPT:REF at [...]

Let's just extend the code that passes through options that start with a
dash, so that it passes through options that start with a slash, too.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:51 +01:00
Johannes Schindelin
c211f92be2 contrib/buildsystems: handle libiconv, too
Git's test suite shows tons of breakages unless Git is compiled
*without* NO_ICONV. That means, in turn, that we need to generate
build definitions *with* libiconv, which in turn implies that we
have to handle the -liconv option properly.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:51 +01:00
Philip Oakley
f50b2e784a contrib/buildsystems: handle the curl library option
Upon seeing the '-lcurl' option, point to the libcurl.lib.

While there, fix the elsif indentation.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:50 +01:00
Philip Oakley
0f592bc9c0 contrib/buildsystems: optionally capture the dry-run in a file
Add an option for capturing the output of the make dry-run used in
determining the msvc-build structure for easy debugging.

You can use the output of `--make-out <path>` in subsequent runs via the
`--in <path>` option.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:50 +01:00
Philip Oakley
f34f9bdd8c contrib/buildsystems: redirect errors of the dry run into a log file
Rather than swallowing the errors, it is better to have them in a file.

To make it obvious what this is about, use the file name
'msvc-build-makedryerrors.txt'.

Further, if the output is empty, simply delete that file. As we target
Git for Windows' SDK (which, unlike its predecessor msysGit, offers Perl
versions newer than 5.8), we can use the quite readable syntax `if -f -z
$ErrsFile` (available in Perl >=5.10).

Note that the file will contain the new values of the GIT_VERSION and
GITGUI_VERSION if they were generated by the make file. They are omitted
if the release is tagged and indentically defined in their respective
GIT_VERSION_GEN file DEF_VER variables.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:50 +01:00
Philip Oakley
8cba0cede0 contrib/buildsystems: ignore gettext stuff
Git's build contains steps to handle internationalization. This caused
hiccups in the parser used to generate QMake/Visual Studio project files.

As those steps are irrelevant in this context, let's just ignore them.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:49 +01:00
Philip Oakley
6bc3b532c2 contrib/buildsystems: handle quoted spaces in filenames
The engine.pl script expects file names not to contain spaces. However,
paths with spaces are quite prevalent on Windows. Use shellwords() rather
than split() to parse them correctly.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:48 +01:00
Philip Oakley
e8217a3cc9 contrib/buildsystems: fix misleading error message
The error message talked about a "lib option", but it clearly referred
to a link option.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:48 +01:00
Johannes Schindelin
c0ac044897 contrib/buildsystems: ignore irrelevant files in Generators/
The Generators/ directory can contain spurious files such as editors'
backup files. Even worse, there could be .swp files which are not even
valid Perl scripts.

Let's just ignore anything but .pm files in said directory.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:47 +01:00
Philip Oakley
ed4e4b1601 contrib/buildsystems: ignore invalidcontinue.obj
Since 4b623d8 (MSVC: link in invalidcontinue.obj for better POSIX
compatibility, 2014-03-29), invalidcontinue.obj is linked in the MSVC
build, but it was not parsed correctly by the buildsystem. Ignore it, as
it is known to Visual Studio and will be handled elsewhere.

Also only substitute filenames ending with .o when generating the
source .c filename, otherwise we would start to expect .cbj files to
generate .obj files (which are not generated by our build)...

In the future there may be source files that produce .obj files
so keep the two issues (.obj files with & without source files)
separate.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Duncan Smart <duncan.smart@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:47 +01:00
Johannes Schindelin
f0de46786e Vcproj.pm: urlencode '<' and '>' when generating VC projects
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:46 +01:00
Johannes Schindelin
b15a19441a Vcproj.pm: do not configure VCWebServiceProxyGeneratorTool
It is not necessary, and Visual Studio 2015 no longer supports it, anyway.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:46 +01:00
Philip Oakley
3970f0661a Vcproj.pm: list git.exe first to be startup project
Visual Studio takes the first listed application/library as the default
startup project [1].

Detect the 'git' project and place it the head of the apps list, rather
than the tail.

Export the apps list before libs list for both the projects and global
structures of the .sln file.

[1] http://stackoverflow.com/questions/1238553/
vs2008-where-is-the-startup-project-setting-stored-for-a-solution
    "In the solution file, there are a list of pseudo-XML "Project"
    entries. It turns out that whatever is the first one ends up as
    the Startup Project, unless it’s overridden in the suo file. Argh.
    I just rearranged the order in the file and it’s good."

    "just moving the pseudo-xml isn't enough. You also have to move the
    group of entries in the "GlobalSection(ProjectConfigurationPlatforms)
    = postSolution" group that has the GUID of the project you moved to
    the top. So there are two places to move lines."

Signed-off-by: Philip Oakley <philipoakley@iee.org>
2018-12-09 11:07:46 +01:00
Johannes Schindelin
85ef6ab2a4 Vcproj.pm: auto-generate GUIDs
We ran out GUIDs. Again. But there is no need to: we can generate them
semi-randomly from the target file name of the project.

Note: the Vcproj generator is probably only interesting for historical
reasons; nevertheless, the upcoming Vcxproj generator (to support modern
Visual Studio versions) is based on the Vcproj generator and it is
better to fix this here first.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2018-12-09 11:07:45 +01:00
Junio C Hamano
0722553177 Merge branch 'sb/cocci-pending'
A coding convention around the Coccinelle semantic patches to have
two classes to ease code migration process has been proposed and
its support has been added to the Makefile.

* sb/cocci-pending:
  coccicheck: introduce 'pending' semantic patches
2018-11-19 16:24:41 +09:00
SZEDER Gábor
dd5d052c39 coccicheck: introduce 'pending' semantic patches
Teach `make coccicheck` to avoid patches named "*.pending.cocci" and
handle them separately in a new `make coccicheck-pending` instead.
This means that we can separate "critical" patches from "FYI" patches.
The former target can continue causing Travis to fail its static
analysis job, while the latter can let us keep an eye on ongoing
(pending) transitions without them causing too much fallout.

Document the intended use-cases around these two targets.
As the process around the pending patches is not yet fully explored,
leave that out.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Based-on-work-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-14 11:22:36 +09:00
Junio C Hamano
95182c65d8 Merge branch 'nd/complete-format-patch'
The support for format-patch (and send-email) by the command-line
completion script (in contrib/) has been simplified a bit.

* nd/complete-format-patch:
  completion: use __gitcomp_builtin for format-patch
2018-11-13 22:37:28 +09:00
Junio C Hamano
9ffcf754da Merge branch 'nd/completion-negation'
The command line completion machinery (in contrib/) has been
updated to allow the completion script to tweak the list of options
that are reported by the parse-options machinery correctly.

* nd/completion-negation:
  completion: fix __gitcomp_builtin no longer consider extra options
2018-11-06 15:50:20 +09:00
Duy Nguyen
13374987dd completion: use __gitcomp_builtin for format-patch
This helps format-patch gain completion for a couple new options,
notably --range-diff.

Since send-email completion relies on $__git_format_patch_options
which is now reduced, we need to do something not to regress
send-email completion.

The workaround here is implement --git-completion-helper in
send-email.perl just as a bridge to "format-patch --git-completion-helper".
This is enough to use __gitcomp_builtin on send-email (to take
advantage of caching).

In the end, send-email.perl can probably reuse the same info it passes
to GetOptions() to generate full --git-completion-helper output so
that we don't need to keep track of its options in git-completion.bash
anymore. But that's something for another boring day.

Helped-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-06 13:22:30 +09:00
Junio C Hamano
87c15d1ca9 Merge branch 'dl/mergetool-gui-option'
"git mergetool" learned to take the "--[no-]gui" option, just like
"git difftool" does.

* dl/mergetool-gui-option:
  doc: document diff/merge.guitool config keys
  completion: support `git mergetool --[no-]gui`
  mergetool: accept -g/--[no-]gui as arguments
2018-10-30 15:43:49 +09:00
Junio C Hamano
97ffca6cc7 Merge branch 'js/mingw-load-sys-dll'
The way DLLs are loaded on the Windows port has been improved.

* js/mingw-load-sys-dll:
  mingw: load system libraries the recommended way
2018-10-30 15:43:48 +09:00
Junio C Hamano
da3e0752cd Merge branch 'jc/cocci-preincr'
Code cleanup.

* jc/cocci-preincr:
  fsck: s/++i > 1/i++/
  cocci: simplify "if (++u > 1)" to "if (u++)"
2018-10-30 15:43:48 +09:00
Junio C Hamano
d829d491ee Merge branch 'bc/hash-transition-part-15'
More codepaths are moving away from hardcoded hash sizes.

* bc/hash-transition-part-15:
  rerere: convert to use the_hash_algo
  submodule: make zero-oid comparison hash function agnostic
  apply: rename new_sha1_prefix and old_sha1_prefix
  apply: replace hard-coded constants
  tag: express constant in terms of the_hash_algo
  transport: use parse_oid_hex instead of a constant
  upload-pack: express constants in terms of the_hash_algo
  refs/packed-backend: express constants using the_hash_algo
  packfile: express constants in terms of the_hash_algo
  pack-revindex: express constants in terms of the_hash_algo
  builtin/fetch-pack: remove constants with parse_oid_hex
  builtin/mktree: remove hard-coded constant
  builtin/repack: replace hard-coded constants
  pack-bitmap-write: use GIT_MAX_RAWSZ for allocation
  object_id.cocci: match only expressions of type 'struct object_id'
2018-10-30 15:43:42 +09:00
Junio C Hamano
42a165c90f Merge branch 'ch/subtree-build'
Build update for "git subtree" (in contrib/) documentation pages.

* ch/subtree-build:
  Revert "subtree: make install targets depend on build targets"
  subtree: make install targets depend on build targets
  subtree: add build targets 'man' and 'html'
2018-10-30 15:43:40 +09:00
Junio C Hamano
eff5d693ad Merge branch 'du/cherry-is-plumbing'
Doc update to mark "git cherry" as a plumbing command.

* du/cherry-is-plumbing:
  doc: move git-cherry to plumbing
2018-10-26 14:22:14 +09:00
Junio C Hamano
3c4a8214a0 Merge branch 'ds/coverage-diff'
The result of coverage test can be combined with "git blame" to
check the test coverage of code introduced recently with a new
'coverage-diff' tool (in contrib/).

* ds/coverage-diff:
  contrib: add coverage-diff script
2018-10-26 14:22:10 +09:00
Junio C Hamano
e7b07376e5 Merge branch 'rs/subtree-fixes'
Various subtree fixes.

* rs/subtree-fixes:
  subtree: performance improvement for finding unexpected parent commits
  subtree: improve decision on merges kept in split
  subtree: use commits before rejoins for splits
  subtree: make --ignore-joins pay attention to adds
  subtree: refactor split of a commit into standalone method
2018-10-26 14:22:08 +09:00
Denton Liu
57ba181270 completion: support git mergetool --[no-]gui
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Anmol Mago <anmolmago@gmail.com>
Signed-off-by: Brian Ho <briankyho@gmail.com>
Signed-off-by: David Lu <david.lu97@outlook.com>
Signed-off-by: Ryan Wang <shirui.wang@hotmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-25 14:01:16 +09:00
Johannes Schindelin
c6f050a434 mingw: load system libraries the recommended way
When we access IPv6-related functions, we load the corresponding system
library using the `LoadLibrary()` function, which is not the recommended
way to load system libraries.

In practice, it does not make a difference: the `ws2_32.dll` library
containing the IPv6 functions is already loaded into memory, so
LoadLibrary() simply reuses the already-loaded library.

Still, recommended way is recommended way, so let's use that instead.

While at it, also adjust the code in contrib/ that loads system libraries.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-24 14:48:00 +09:00
Junio C Hamano
05b4ed61f4 cocci: simplify "if (++u > 1)" to "if (u++)"
It is more common to use post-increment than pre-increment when the
side effect is the primary thing we want in our code and in C in
general (unlike C++).

Initializing a variable to 0, incrementing it every time we do
something, and checking if we have already done that thing to guard
the code to do that thing, is easier to understand when written

	if (u++)
		; /* we've done that! */
	else
		do_it(); /* just once. */

but if you try to use pre-increment, you end up with a less natural
looking

	if (++u > 1)

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-24 10:10:10 +09:00
Nguyễn Thái Ngọc Duy
276b49ff34 completion: fix __gitcomp_builtin no longer consider extra options
__gitcomp_builtin() has the main completion list provided by

    git xxx --git-completion-helper

but the caller can also add extra options that is not provided by
--git-completion-helper. The only call site that does this is "git
difftool" completion.

This support is broken by b221b5ab9b (completion: collapse extra
--no-.. options - 2018-06-06), which adds a special value "--" to mark
that the rest of the options can be hidden by default. The commit
forgets the fact that extra options are appended after
"$(git xxx --git-completion-helper)", i.e. after this "--", and will
be incorrectly hidden as well.

Prepend the extra options before "$(git xxx --git-completion-helper)"
to avoid this.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-22 12:52:29 +09:00
Junio C Hamano
aef8e71f15 Merge branch 'nd/complete-fetch-multiple-args'
Teach bash completion that "git fetch --multiple" only takes remote
names as arguments and no refspecs.

* nd/complete-fetch-multiple-args:
  completion: support "git fetch --multiple"
2018-10-19 13:34:01 +09:00
Junio C Hamano
0df8e6d5a5 Revert "subtree: make install targets depend on build targets"
This reverts commit 744f7c4c31.

These targets do depend on the fact that each prereq is explicitly
listed via their use of $^, which I failed to notice, and broke the
build.
2018-10-18 11:07:17 +09:00
Christian Hesse
744f7c4c31 subtree: make install targets depend on build targets
Now that we have build targets let the install targets depend on them.
Also make the targets phony.

Signed-off-by: Christian Hesse <mail@eworm.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-16 17:00:42 +09:00
SZEDER Gábor
6afedba8c9 object_id.cocci: match only expressions of type 'struct object_id'
Most of our semantic patches in 'contrib/coccinelle/object_id.cocci'
turn calls of SHA1-specific functions into calls of their
corresponding object_id counterparts, e.g. sha1_to_hex() to
oid_to_hex().  These semantic patches look something like this:

  @@
  expression E1;
  @@
  - sha1_to_hex(E1.hash)
  + oid_to_hex(&E1)

and match the access to the 'hash' field in any data type, not only in
'struct object_id', and, consquently, can produce wrong
transformations.

Case in point is the recent hash function transition patch "rerere:
convert to use the_hash_algo" [1], which, among other things, renamed
'struct rerere_dir's 'sha1' field to 'hash', and then 'make
coccicheck' started to suggest the following wrong transformations for
'rerere.c' [2]:

  -    return sha1_to_hex(id->collection->hash);
  +    return oid_to_hex(id->collection);

and

  -    DIR *dir = opendir(git_path("rr-cache/%s", sha1_to_hex(rr_dir->hash)));
  +    DIR *dir = opendir(git_path("rr-cache/%s", oid_to_hex(rr_dir)));

Avoid such wrong transformations by tightening semantic patches in
'object_id.cocci' to match only type of or pointers to 'struct
object_id'.

[1] https://public-inbox.org/git/20181008215701.779099-15-sandals@crustytoothpaste.net/
[2] https://travis-ci.org/git/git/jobs/440463476#L580

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-15 12:53:15 +09:00
Roger Strain
19ad68d95d subtree: performance improvement for finding unexpected parent commits
After testing a previous patch at larger scale, a performance issue was
detected when using git show to locate parent revisions, with a single
run of the git show command taking 2 seconds or longer in a complex repo.
When the command is required tens or hundreds of times in a run of the
script, the additional wait time is unaccepatable. Replacing the command
with git rev-parse resulted in significantly increased performance, with
the command in question returning instantly.

Signed-off-by: Roger Strain <rstrain@swri.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-12 23:28:32 +09:00
Daniels Umanovskis
61018fe9e0 doc: move git-cherry to plumbing
Also remove git-cherry from Bash completion because plumbing
commands do not belong there.

Signed-off-by: Daniels Umanovskis <daniels@umanovskis.se>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-12 08:26:49 +09:00
Christian Hesse
0f952b2659 subtree: add build targets 'man' and 'html'
We have targets 'install-man' and 'install-html', let's add build
targets as well.

Signed-off-by: Christian Hesse <mail@eworm.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-10 11:21:47 +09:00
Derrick Stolee
783faedd65 contrib: add coverage-diff script
We have coverage targets in our Makefile for using gcov to display line
coverage based on our test suite. The way I like to do it is to run:

    make coverage-test
    make coverage-report

This leaves the repo in a state where every X.c file that was covered has
an X.c.gcov file containing the coverage counts for every line, and "#####"
at every uncovered line.

There have been a few bugs in recent patches what would have been caught
if the test suite covered those blocks (including a few of mine). I want
to work towards a "sensible" amount of coverage on new topics. In my opinion,
this means that any logic should be covered, but the 'die()' blocks covering
very unlikely (or near-impossible) situations may not warrant coverage.

It is important to not measure the coverage of the codebase by what old code
is not covered. To help, I created the 'contrib/coverage-diff.sh' script.
After creating the coverage statistics at a version (say, 'topic') you can
then run

    contrib/coverage-diff.sh base topic

to see the lines added between 'base' and 'topic' that are not covered by the
test suite. The output uses 'git blame -s' format so you can find the commits
responsible and view the line numbers for quick access to the context, but
trims leading tabs in the file contents to reduce output width.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-10 10:11:35 +09:00
Steven Fernandez
705f5f122c git-completion.bash: add completion for stash list
Since stash list accepts git-log options, add the following useful
options that make sense in the context of the `git stash list` command:

  --name-status --oneline --patch-with-stat

Signed-off-by: Steven Fernandez <steve@lonetwin.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07 10:05:49 +09:00
Strain, Roger L
68f8ff8151 subtree: improve decision on merges kept in split
When multiple identical parents are detected for a commit being considered
for copying, explicitly check whether one is the common merge base between
the commits. If so, the other commit can be used as the identical parent;
if not, a merge must be performed to maintain history.

In some situations two parents of a merge commit may appear to both have
identical subtree content with each other and the current commit. However,
those parents can potentially come from different commit graphs.

Previous behavior would simply select one of the identical parents to
serve as the replacement for this commit, based on the order in which they
were processed.

New behavior compares the merge base between the commits to determine if
a new merge commit is necessary to maintain history despite the identical
content.

Signed-off-by: Strain, Roger L <roger.strain@swri.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07 08:09:34 +09:00
Strain, Roger L
315a84f9aa subtree: use commits before rejoins for splits
Adds recursive evaluation of parent commits which were not part of the
initial commit list when performing a split.

Split expects all relevant commits to be reachable from the target commit
but not reachable from any previous rejoins. However, a branch could be
based on a commit prior to a rejoin, then later merged back into the
current code. In this case, a parent to the commit will not be present in
the initial list of commits, trigging an "incorrect order" warning.

Previous behavior was to consider that commit to have no parent, creating
an original commit containing all subtree content. This commit is not
present in an existing subtree commit graph, changing commit hashes and
making pushing to a subtree repo impossible.

New behavior will recursively check these unexpected parent commits to
track them back to either an earlier rejoin, or a true original commit.
The generated synthetic commits will properly match previously-generated
commits, allowing successful pushing to a prior subtree repo.

Signed-off-by: Strain, Roger L <roger.strain@swri.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07 08:09:34 +09:00
Strain, Roger L
dd21d43b58 subtree: make --ignore-joins pay attention to adds
Changes the behavior of --ignore-joins to always consider a subtree add
commit, and ignore only splits and squashes.

The --ignore-joins option is documented to ignore prior --rejoin commits.
However, it additionally ignored subtree add commits generated when a
subtree was initially added to a repo.

Due to the logic which determines whether a commit is a mainline commit
or a subtree commit (namely, the presence or absence of content in the
subtree prefix) this causes commits before the initial add to appear to
be part of the subtree. An --ignore-joins split would therefore consider
those commits part of the subtree history and include them at the
beginning of the synthetic history, causing the resulting hashes to be
incorrect for all later commits.

Signed-off-by: Strain, Roger L <roger.strain@swri.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07 08:09:34 +09:00
Strain, Roger L
565e4b7981 subtree: refactor split of a commit into standalone method
In a particularly complex repo, subtree split was not creating
compatible splits for pushing back to a separate repo. Addressing
one of the issues requires recursive handling of parent commits
that were not initially considered by the algorithm. This commit
makes no functional changes, but relocates the code to be called
recursively into a new method to simply comparisons of later
commits.

Signed-off-by: Strain, Roger L <roger.strain@swri.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07 08:09:34 +09:00
Nguyễn Thái Ngọc Duy
b5619f6d2b completion: support "git fetch --multiple"
When --multiple is given, the remaining arguments are remote names,
not one remote followed by zero or more refspec. Detect this case,
disable refspec completion, and pretend no remote is seen in order to
complete multiple of them.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-21 09:34:43 -07:00
Jeff King
67947c34ae convert "hashcmp() != 0" to "!hasheq()"
This rounds out the previous three patches, covering the
inequality logic for the "hash" variant of the functions.

As with the previous three, the accompanying code changes
are the mechanical result of applying the coccinelle patch;
see those patches for more discussion.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-29 11:32:49 -07:00