Commit Graph

60431 Commits

Author SHA1 Message Date
Martin Ågren
8afa50aabc shallow.txt: document SHA-256 shallow format
Similar to recent commits, document that we list object names rather
than SHA-1s.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17 10:35:13 -07:00
Martin Ågren
0756e61078 protocol-capabilities.txt: clarify "allow-x-sha1-in-want" re SHA-256
Two of our capabilities contain "sha1" in their names, but that's
historical. Clarify that object names are still to be given using
whatever object format has been negotiated using the "object-format"
capability.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17 10:35:12 -07:00
Martin Ågren
123712ba41 index-format.txt: document SHA-256 index format
Document that in SHA-1 repositories, we use SHA-1 and in SHA-256
repositories, we use SHA-256, then replace all other uses of "SHA-1"
with something more neutral. Avoid referring to "160-bit" hash values.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17 10:35:12 -07:00
Martin Ågren
5b6422a616 http-protocol.txt: document SHA-256 "want"/"have" format
Document that rather than always naming objects using SHA-1, we should
use whatever has been negotiated using the object-format capability.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17 10:35:12 -07:00
René Scharfe
a698d67b08 upload-pack: use buffered I/O to talk to rev-list
Like f0bca72dc7 (send-pack: use buffered I/O to talk to pack-objects,
2016-06-08), significantly reduce the number of system calls and
simplify the code for sending object IDs to rev-list by using stdio's
buffering.

Take care to handle errors immediately to get the correct error code,
and to flush the buffer explicitly before closing the stream in order to
catch any write errors for these last bytes.

Helped-by: Chris Torek <chris.torek@gmail.com>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17 10:29:39 -07:00
René Scharfe
6af3b00abc midx: use buffered I/O to talk to pack-objects
Like f0bca72dc7 (send-pack: use buffered I/O to talk to pack-objects,
2016-06-08), significantly reduce the number of system calls and
simplify the code for sending object IDs to pack-objects by using
stdio's buffering.

Helped-by: Chris Torek <chris.torek@gmail.com>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Encouraged-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17 10:29:39 -07:00
René Scharfe
24b75faf0d connected: use buffered I/O to talk to rev-list
Like f0bca72dc7 (send-pack: use buffered I/O to talk to pack-objects,
2016-06-08), significantly reduce the number of system calls and
simplify the code for sending object IDs to rev-list by using stdio's
buffering.

Take care to handle errors immediately to get the correct error code,
and to flush the buffer explicitly before closing the stream in order to
catch any write errors for these last bytes.

Helped-by: Chris Torek <chris.torek@gmail.com>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-17 10:29:39 -07:00
Jeff King
f1de981e8b config: fix leaks from git_config_get_string_const()
There are two functions to get a single config string:

  - git_config_get_string()

  - git_config_get_string_const()

One might naively think that the first one allocates a new string and
the second one just points us to the internal configset storage. But
in fact they both allocate a new copy; the second one exists only to
avoid having to cast when using it with a const global which we never
intend to free.

The documentation for the function explains that clearly, but it seems
I'm not alone in being surprised by this. Of 17 calls to the function,
13 of them leak the resulting value.

We could obviously fix these by adding the appropriate free(). But it
would be simpler still if we actually had a non-allocating way to get
the string. There's git_config_get_value() but that doesn't quite do
what we want. If the config key is present but is a boolean with no
value (e.g., "[foo]bar" in the file), then we'll get NULL (whereas the
string versions will print an error and die).

So let's introduce a new variant, git_config_get_string_tmp(), that
behaves as these callers expect. We need a new name because we have new
semantics but the same function signature (so even if we converted the
four remaining callers, topics in flight might be surprised). The "tmp"
is because this value should only be held onto for a short time. In
practice it's rare for us to clear and refresh the configset,
invalidating the pointer, but hopefully the "tmp" makes callers think
about the lifetime. In each of the converted cases here the value only
needs to last within the local function or its immediate caller.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-14 10:52:04 -07:00
Jeff King
c514c62a4f checkout: fix leak of non-existent branch names
We unconditionally write a branch name into a newly allocated buffer in
new_branch_info->path, via setup_branch_path(). We then check to see if
the branch exists; if not, we set that field to NULL, leaking the
memory. We should take care to free() it when doing so.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-14 10:52:04 -07:00
Jeff King
9101c8ea2d submodule--helper: use strbuf_release() to free strbufs
The prepare_to_clone_next_submodule() function has a few local-variable
strbufs. We use strbuf_reset() throughout the function to reuse the
buffers over and over. But at the end of the function we also use
strbuf_reset() as they go out of scope, which means we end up leaking
their heap buffers. This should be strbuf_release() instead.

These were introduced by 48308681b0 (git submodule update: have a
dedicated helper for cloning, 2016-02-29), but it doesn't seem to have
the same mistake elsewhere. Likewise, I looked for other instances of
the pattern in the submodule--helper file but couldn't find any.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-14 10:52:04 -07:00
Elijah Newren
7d056deace sequencer: avoid garbled merge machinery messages due to commit labels
sequencer's get_message() exists to provide good labels on conflict
hunks; see commits
  d68565402a ("revert: clarify label on conflict hunks", 2010-03-20)
  bf975d379d ("cherry-pick, revert: add a label for ancestor", 2010-03-20)
  043a4492b3 ("sequencer: factor code out of revert builtin", 2012-01-11).
for background on this function.  These labels are of the form
  <commitID>... <commit summary>
or
  parent of <commitID>... <commit summary>
These labels are then passed as branch names to the merge machinery.
However, these labels, as formatted, often also serve to confuse.  For
example, if we have a rename involved in a content merge, then it
results in text such as the following:

    <<<<<<<< HEAD:foo.c
      int j;
    ========
      int counter;
    >>>>>>>> b01dface... Removed unnecessary stuff:bar.c

Or in various conflict messages, it can make it very difficult to read:

    CONFLICT (rename/delete): foo.c deleted in b01dface... Removed
    unnecessary stuff and renamed in HEAD.  Version HEAD of foo.c left
    in tree.

    CONFLICT (file location): dir1/foo.c added in b01dface... Removed
    unnecessary stuff inside a directory that was renamed in HEAD,
    suggesting it should perhaps be moved to dir2/foo.c.

Make a minor change to remove the ellipses and add parentheses around
the commit summary; this makes all three examples much easier to read:

    <<<<<<<< HEAD:foo.c
      int j;
    ========
      int counter;
    >>>>>>>> b01dface (Removed unnecessary stuff):bar.c

    CONFLICT (rename/delete): foo.c deleted in b01dface (Removed
    unnecessary stuff) and renamed in HEAD.  Version HEAD of foo.c left
    in tree.

    CONFLICT (file location): dir1/foo.c added in b01dface (Removed
    unnecessary stuff) inside a directory that was renamed in HEAD,
    suggesting it should perhaps be moved to dir2/foo.c.

Signed-off-by: Elijah Newren <newren@gmail.com>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-14 10:48:58 -07:00
Jeff King
8dc3156373 clear_pattern_list(): clear embedded hashmaps
Commit 96cc8ab531 (sparse-checkout: use hashmaps for cone patterns,
2019-11-21) added some auxiliary hashmaps to the pattern_list struct,
but they're leaked when clear_pattern_list() is called.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-14 10:48:12 -07:00
Junio C Hamano
4279000d3e messages: avoid SHA-1 in end-user facing messages
There are still a handful mentions of SHA-1 when we meant the
(hexadecimal) object names in end-user facing messages.  Rewrite
them.

I was hoping that this can mostly be s/SHA-1/object name/, but
a few messages needed rephrasing to keep the result readable.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-14 09:33:37 -07:00
brian m. carlson
2ae12e568b docs: fix step in transition plan
One of the required steps for the objectFormat extension is to implement
the loose object index.  However, without support for
compatObjectFormat, we don't even know if the loose object index is
needed, so it makes sense to move that step to the compatObjectFormat
section.  Do so.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 18:09:55 -07:00
brian m. carlson
17420eafa9 docs: document SHA-256 pack and indices
Now that we have SHA-256 support for packs and indices, let's document
that in SHA-256 repositories, we use SHA-256 instead of SHA-1 for object
names and checksums.  Instead of duplicating this information throughout
the document, let's just document that in SHA-1 repositories, we use
SHA-1 for these purposes, and in SHA-256 repositories, we use SHA-256.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 18:09:36 -07:00
Junio C Hamano
878e727637 Seventh batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 14:13:59 -07:00
Junio C Hamano
5707ac426d Merge branch 'rp/blame-first-parent-doc'
The "git blame --first-parent" option was not documented, but now
it is.

* rp/blame-first-parent-doc:
  blame-options.txt: document --first-parent option
2020-08-13 14:13:40 -07:00
Junio C Hamano
0a41a89306 Merge branch 'ma/test-quote-cleanup'
Test cleanup.

* ma/test-quote-cleanup:
  t4104: modernize and simplify quoting
  t: don't spuriously close and reopen quotes
2020-08-13 14:13:39 -07:00
Junio C Hamano
d1a8a8979d Merge branch 'jt/has_object'
A new helper function has_object() has been introduced to make it
easier to mark object existence checks that do and don't want to
trigger lazy fetches, and a few such checks are converted using it.

* jt/has_object:
  fsck: do not lazy fetch known non-promisor object
  pack-objects: no fetch when allow-{any,promisor}
  apply: do not lazy fetch when applying binary
  sha1-file: introduce no-lazy-fetch has_object()
2020-08-13 14:13:39 -07:00
Junio C Hamano
092b6771c7 Merge branch 'bc/sha-256-cvs-svn-updates'
Portability fix.

* bc/sha-256-cvs-svn-updates:
  git-cvsexportcommit: support Perl before 5.10.1
2020-08-13 14:13:39 -07:00
Antti Keränen
5da69c0dac rebase -i: fix possibly wrong onto hash in todo
'todo_list_write_to_file' may overwrite the static buffer, originating
from 'find_unique_abbrev', that was used to store the short commit hash
'c' for "# Rebase a..b onto c" message in the todo editor. This is
because the buffer that is returned from 'find_unique_abbrev' is valid
until 4 more calls to `find_unique_abbrev` are made.

As 'todo_list_write_to_file' calls 'find_unique_abbrev' for each rebased
commit, the hash for 'c' is overwritten if there are 4 or more commits
in the rebase. This behavior has been broken since its introduction.

Fix by storing the short onto commit hash in a different buffer that
remains valid, before calling 'todo_list_write_to_file'.

Found-by: Jussi Keränen <jussike@gmail.com>
Signed-off-by: Antti Keränen <detegr@rbx.email>
Acked-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:32:34 -07:00
Philippe Blain
75c3b6b2e8 userdiff: improve Fortran xfuncname regex
The third part of the Fortran xfuncname regex wants to match the
beginning of a subroutine or function, so it allows for all characters
except `'`, `"` or whitespace before the keyword 'function' or
'subroutine'. This is meant to match the 'recursive', 'elemental' or
'pure' keywords, as well as function return types, and to prevent
matches inside strings.

However, the negated set does not contain the `!` comment character,
so a line with an end-of-line comment containing the keyword 'function' or
'subroutine' followed by another word is mistakenly chosen as a hunk header.

Improve the regex by adding `!` to the negated set.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:21:18 -07:00
Philippe Blain
b79e6925f0 userdiff: add tests for Fortran xfuncname regex
The Fortran userdiff patterns, introduced in 909a5494f8 (userdiff.c: add
builtin fortran regex patterns, 2010-09-10), predate the test
infrastructure for xfuncname patterns, introduced in bfa7d01413 (t4018:
an infrastructure to test hunk headers, 2014-03-21).

Add tests for the Fortran xfuncname patterns. The test
't/t4018/fortran-comment-keyword' documents a shortcoming of the regex
that is fixed in a subsequent commit.

While at it, add descriptive comments for the different parts of the
regex.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:21:17 -07:00
Philippe Blain
847b37271e fetch, pull doc: correct description of '--set-upstream'
The '--set-upstream' option to `git fetch` (which is also accepted by
`git pull` and passed through to the underlying `git fetch`) allows
setting the upstream configuration for the current branch. This was
added in 24bc1a1292 (pull, fetch: add --set-upstream option,
2019-08-19).

However, the documentation for that option describes its action as 'If
the remote is fetched successfully, pull and add upstream (tracking)
reference [...]', which is wrong because this option does not cause
neither `git fetch` nor `git pull` to pull: `git fetch` does not pull
and `git pull` always pulls.

Fix the description of that option.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:20:25 -07:00
Johannes Berg
6dfefe70a9 docs: commit-graph: fix some whitespace in the diagram
In the merge diagram, some whitespace is missing which
makes it a bit confusing, fix that.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:06:04 -07:00
Jeff King
3e19816dc0 ls-remote: simplify UNLEAK() usage
We UNLEAK() the "sorting" list created by parsing command-line options
(which is essentially used until the program exits). But we do so right
before leaving the cmd_ls_remote() function, which means we have to hit
all of the exits. But the point of UNLEAK() is that it's an annotation
which doesn't impact the variable itself. We can mark it as soon as
we're done writing its value, and then we only have to do so once.

This gives us a minor code reduction, and serves as a better example of
how UNLEAK() can be used.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:05:26 -07:00
Jeff King
d5e1961c19 stop calling UNLEAK() before die()
The point of UNLEAK() is to make a reference to a variable that is about
to go out of scope so that leak-checkers will consider it to be
not-leaked. Doing so right before die() is therefore pointless; even
though we are about to exit the program, the variable will still be on
the stack and accessible to leak-checkers.

These annotations aren't really hurting anything, but they clutter the
code and set a bad example of how to use UNLEAK().

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:04:58 -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
Jeff King
a04f653109 Makefile: drop builtins from MSVC pdb list
Over the years some more programs have become builtins, but nobody
updated this MSVC-specific section of the file (which specifically says
that it should not include builtins). Let's bring it up to date.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 11:02:06 -07:00
Jeff King
c2ebaa27d6 blame: only coalesce lines that are adjacent in result
After blame has finished but before we produce any output, we coalesce
groups of lines that were adjacent in the original suspect (which may
have been split apart by lines in intermediate commits which went away).
However, this can cause incorrect output if the lines are not also
adjacent in the result. For instance, the case in t8003 has:

  ABC
  DEF

which becomes

  ABC
  SPLIT
  DEF

Blaming only lines 1 and 3 in the result yields two blame groups (one
for each line) that were adjacent in the original. That's enough for us
to coalesce them into a single group, but that loses information: our
output routines assume they're adjacent in the result as well, and we
output:

  <oid> 1) ABC
  <oid> 2) SPLIT

This is nonsense for two reasons:

  - we were asked about line 3, not line 2; we should not output the
    SPLIT line at all

  - commit <oid> did not touch the SPLIT line at all! We found the
    correct blame for line 3, but the bug is actually in the output
    stage, which is showing the wrong line number and content from the
    final file.

We can fix this by only coalescing when both the suspect and result
lines are adjacent. That fixes this bug, but keeps coalescing in cases
where want it (e.g., the existing test in t8003 where SPLIT goes away,
and the lines really are adjacent in the result).

Reported-by: Nuthan Munaiah <nm6061@rit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 10:09:38 -07:00
Jeff King
dd7c611164 t8003: factor setup out of coalesce test
In preparation for adding more tests of blame's coalesce code, let's
split the setup out from the first test, and give each of the commits
a more meaningful name:

  - $orig for the original source that added the lines

  - $split for the version where they are split apart

  - $final for the final version that re-joins them

That's not strictly necessary, but makes the follow-on tests less
brittle than relying on HEAD^, etc, to name the commits.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 10:08:24 -07:00
Jeff King
6dbf0c7beb t8003: check output of coalesced blame
Commit f0cbe742f4 (blame: add a test to cover blame_coalesce(),
2019-06-20) added a test case where blame can usefully coalesce two
groups of lines. But since it relies on the normal blame output, it only
exercises the code and can't tell whether the lines were actually
joined into a single group.

However, by using --porcelain output, we can see how git-blame considers
the groupings (and likewise how the coalescing might have a real
user-visible impact for a tool that uses the porcelain-output
groupings). This lets us confirm that we are indeed coalescing correctly
(and the fact that this test case requires coalescing can be verified by
dropping the call to blame_coalesce(), causing the test to fail).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13 10:08:10 -07:00
Prathamesh Chavan
e83e3333b5 submodule: port submodule subcommand 'summary' from shell to C
Convert submodule subcommand 'summary' to a builtin and call it via
'git-submodule.sh'.

The shell version had to call $diff_cmd twice, once to find the modified
modules cared by the user and then again, with that list of modules
to do various operations for computing the summary of those modules.
On the other hand, the C version does not need a second call to
$diff_cmd since it reuses the module list from the first call to do the
aforementioned tasks.

In the C version, we use the combination of setting a child process'
working directory to the submodule path and then calling
'prepare_submodule_repo_env()' which also sets the 'GIT_DIR' to '.git',
so that we can be certain that those spawned processes will not access
the superproject's ODB by mistake.

A behavioural difference between the C and the shell version is that the
shell version outputs two line feeds after the 'git log' output when run
outside of the tests while the C version outputs one line feed in any
case. The reason for this is that the shell version calls log with
'--pretty=format:<fmt>' whose output is followed by two echo
calls; 'format' does not have "terminator" semantics like its 'tformat'
counterpart. So, the log output is terminated by a newline only when
invoked by the user and not when invoked from the scripts. This results
in the one & two line feed differences in the shell version.
On the other hand, the C version calls log with '--pretty=<fmt>'
which is equivalent to '--pretty:tformat:<fmt>' which is then
followed by a 'printf("\n")'. Due to its "terminator" semantics the
log output is always terminated by newline and hence one line feed in
any case.

Also, when we try to pass an option-like argument after a non-option
argument, for instance:

    git submodule summary HEAD --foo-bar

    (or)

    git submodule summary HEAD --cached

That argument would be treated like a path to the submodule for which
the user is requesting a summary. So, the option ends up having no
effect. Though, passing '--quiet' is an exception to this:

    git submodule summary HEAD --quiet

While 'summary' doesn't support '--quiet', we don't get an output for
the above command as '--quiet' is treated as a path which means we get
an output only if a submodule whose path is '--quiet' exists.

The error message in case of computing a summary for non-existent
submodules in the C version is different from that of the shell version.
Since the new error message is not marked for translation, change the
'test_i18ngrep' in t7421.4 to 'grep'.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Stefan Beller <stefanbeller@gmail.com>
Mentored-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com>
Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Prathamesh Chavan <pc44800@gmail.com>
Signed-off-by: Shourya Shukla <shouryashukla.oo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-12 14:12:58 -07:00
Shourya Shukla
ede8a5bb6b t7421: introduce a test script for verifying 'summary' output
't7401-submodule-summary.sh' uses 'git add' to add submodules. Therefore,
some commands such as 'git submodule init' and 'git submodule deinit'
do not work as expected.

So, introduce a test script for verifying the 'summary' output for
submodules added using 'git submodule add' and notify regarding the
above mentioned behaviour in t7401 itself.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com>
Signed-off-by: Shourya Shukla <shouryashukla.oo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-12 14:12:58 -07:00
Shourya Shukla
180b154b09 submodule: rename helper functions to avoid ambiguity
The helper functions: show_submodule_summary(),
prepare_submodule_summary() and print_submodule_summary() are used by
the builtin_diff() function in diff.c to generate a summary of
submodules in the context of a diff. Functions with similar names are to
be introduced in the upcoming port of submodule's summary subcommand.

So, rename the helper functions to '*_diff_submodule_summary()' to avoid
ambiguity.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com>
Signed-off-by: Shourya Shukla <shouryashukla.oo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-12 14:12:58 -07:00
Shourya Shukla
6414c3d316 submodule: remove extra line feeds between callback struct and macro
Many `submodule--helper` subcommands follow the convention that a struct
defines their callback data, and the declaration of that struct is
followed immediately by a macro to use in static initializers, without
any separating empty line.

Let's align the `init`, `status` and `sync` subcommands with that convention.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com>
Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Helped-by: Philip Oakley <philipoakley@iee.email>
Signed-off-by: Shourya Shukla <shouryashukla.oo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-12 14:12:58 -07:00
Elijah Newren
ab282aa548 dir: avoid prematurely marking nonbare repositories as matches
Nonbare repositories are special directories.  Unlike normal directories
that we might recurse into to list the files they contain, nonbare
repositories must themselves match and then we always report only on the
nonbare repository directory itself and not on any of its contents.

Separately, when traversing directories to try to find untracked or
excluded files, we often think in terms of paths either matching the
specified pathspec, or not matching them.  However, there is a special
value that do_match_pathspec() uses named
MATCHED_RECURSIVELY_LEADING_PATHSPEC which means "this directory does
not match any pathspec BUT it is possible a file or directory underneath
it does."  That special value prevents us from prematurely thinking that
some directory and everything under it is irrelevant, but also allows us
to differentiate from "this is a match".

The combination of these two special cases was previously uncovered.
Add a test to the testsuite to cover it, and make sure that we return a
nonbare repository as a non-match if the best match it got was
MATCHED_RECURSIVELY_LEADING_PATHSPEC.

Reported-by: christian w <usebees@gmail.com>
Simplified-testcase-and-bisection-by: Kyle Meyer <kyle@kyleam.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-12 12:26:47 -07:00
Elijah Newren
ed8268da10 t3000: fix some test description typos
There is no such flag as --o; it is either --others or -o.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-12 12:26:45 -07:00
René Scharfe
a831908599 rebase: remove unused function reschedule_last_action
The only caller of reschedule_last_action was removed by ef64bb328d
(rebase: strip unused code in git-rebase--preserve-merges.sh,
2018-05-28); remove this unused shell function as well.

Signed-off-by: René Scharfe <l.s.r@web.de>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-12 12:25:42 -07:00
Junio C Hamano
7814e8a05a Sixth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-11 18:04:13 -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
73a9255166 Merge branch 'tb/upload-pack-filters'
The component to respond to "git fetch" request is made more
configurable to selectively allow or reject object filtering
specification used for partial cloning.

* tb/upload-pack-filters:
  t5616: use test_i18ngrep for upload-pack errors
  upload-pack.c: introduce 'uploadpackfilter.tree.maxDepth'
  upload-pack.c: allow banning certain object filter(s)
  list_objects_filter_options: introduce 'list_object_filter_config_name'
2020-08-11 18:04:13 -07:00
Junio C Hamano
a3afa4becd Merge branch 'es/worktree-doc-cleanups'
Doc cleanup around "worktree".

* es/worktree-doc-cleanups:
  git-worktree.txt: link to man pages when citing other Git commands
  git-worktree.txt: make start of new sentence more obvious
  git-worktree.txt: fix minor grammatical issues
  git-worktree.txt: consistently use term "working tree"
  git-worktree.txt: employ fixed-width typeface consistently
2020-08-11 18:04:12 -07:00
Junio C Hamano
e0ad9574dd Merge branch 'bc/sha-256-part-3'
The final leg of SHA-256 transition.

* bc/sha-256-part-3: (39 commits)
  t: remove test_oid_init in tests
  docs: add documentation for extensions.objectFormat
  ci: run tests with SHA-256
  t: make SHA1 prerequisite depend on default hash
  t: allow testing different hash algorithms via environment
  t: add test_oid option to select hash algorithm
  repository: enable SHA-256 support by default
  setup: add support for reading extensions.objectformat
  bundle: add new version for use with SHA-256
  builtin/verify-pack: implement an --object-format option
  http-fetch: set up git directory before parsing pack hashes
  t0410: mark test with SHA1 prerequisite
  t5308: make test work with SHA-256
  t9700: make hash size independent
  t9500: ensure that algorithm info is preserved in config
  t9350: make hash size independent
  t9301: make hash size independent
  t9300: use $ZERO_OID instead of hard-coded object ID
  t9300: abstract away SHA-1-specific constants
  t8011: make hash size independent
  ...
2020-08-11 18:04:11 -07:00
Sergey Organov
298889d3e2 t/t4013: add test for --diff-merges=off
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-11 14:21:45 -07:00
Sergey Organov
405a2fdf99 doc/git-log: describe --diff-merges=off
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-11 14:20:27 -07:00
Sergey Organov
6501580ff8 revision: change "--diff-merges" option to require parameter
--diff-merges=off is the only accepted form for now, a synonym for
--no-diff-merges.

This patch is a preparation for adding more values, as well as supporting
--diff-merges=<parent>, where <parent> is single parent number to output diff
against.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-11 14:20:24 -07:00