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7627 commits

Author SHA1 Message Date
Junio C Hamano 17c8f1f2ed Merge branch 'jc/format-patch-error-check'
"git format-patch" used overwrite an existing patch/cover-letter
file.  A new "--no-clobber" option stops it.

* jc/format-patch-error-check:
  format-patch: notice failure to open cover letter for writing
  builtin/log: downcase the beginning of error messages
2019-04-16 19:28:06 +09:00
Junio C Hamano 63643865d2 Merge branch 'js/init-db-update-for-mingw'
"git init" forgot to read platform-specific repository
configuration, which made Windows port to ignore settings of
core.hidedotfiles, for example.

* js/init-db-update-for-mingw:
  mingw: respect core.hidedotfiles = false in git-init again
2019-04-16 19:28:05 +09:00
Nguyễn Thái Ngọc Duy a282f5a906 submodule foreach: fix "<command> --quiet" not being respected
Robin reported that

    git submodule foreach --quiet git pull --quiet origin

is not really quiet anymore [1]. "git pull" behaves as if --quiet is not
given.

This happens because parseopt in submodule--helper will try to parse
both --quiet options as if they are foreach's options, not git-pull's.
The parsed options are removed from the command line. So when we do
pull later, we execute just this

    git pull origin

When calling submodule helper, adding "--" in front of "git pull" will
stop parseopt for parsing options that do not really belong to
submodule--helper foreach.

PARSE_OPT_KEEP_UNKNOWN is removed as a safety measure. parseopt should
never see unknown options or something has gone wrong. There are also
a couple usage string update while I'm looking at them.

While at it, I also add "--" to other subcommands that pass "$@" to
submodule--helper. "$@" in these cases are paths and less likely to be
--something-like-this. But the point still stands, git-submodule has
parsed and classified what are options, what are paths. submodule--helper
should never consider paths passed by git-submodule to be options even
if they look like one.

The test case is also contributed by Robin.

[1] it should be quiet before fc1b9243cd (submodule: port submodule
    subcommand 'foreach' from shell to C, 2018-05-10) because parseopt
    can't accidentally eat options then.

Reported-by: Robin H. Johnson <robbat2@gentoo.org>
Tested-by: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-15 11:58:42 +09:00
Christian Couder ee521ec4cb replace: peel tag when passing a tag first to --graft
When passing a tag as the first argument to `git replace --graft`,
it can be useful to accept it and use the underlying commit as a
the commit that will be replaced.

This already works for lightweight tags, but unfortunately
for annotated tags we have been using the hash of the tag object
instead of the hash of the underlying commit.

Especially we would pass the hash of the tag object to
replace_object_oid() where we would likely fail with an error
like:

"error: Objects must be of the same type.
'annotated_replaced_object' points to a replaced object of type 'tag'
while 'replacement' points to a replacement object of type 'commit'."

This patch fixes that by using the hash of the underlying commit
when an annotated tag is passed.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-15 11:33:23 +09:00
Christian Couder f8e44a81bf replace: peel tag when passing a tag as parent to --graft
When passing a tag as a parent argument to `git replace --graft`,
it can be useful to accept it and use the underlying commit as a
parent.

This already works for lightweight tags, but unfortunately
for annotated tags we have been using the hash of the tag object
instead of the hash of the underlying commit as a parent in the
replacement object we create.

This created invalid objects, but the replace succeeded even if
it showed an error like:

error: object A is a tag, not a commit

This patch fixes that by using the hash of the underlying commit
when an annotated tag is passed.

While at it, let's also update an error message to make it
clearer.

Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-15 11:31:42 +09:00
Jonathan Tan 9ed8790282 pack-objects: write objects packed to trace2
This is useful when investigating performance of pushes, and other times
when no progress information is written (because the pack is written to
stdout).

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-12 15:19:46 +09:00
Denton Liu eea9c1e78f tag: advise on nested tags
Robert Dailey reported confusion on the mailing list about a nested
tag which was most likely created by mistake. Jeff King noted that
this isn't a very common case and creating a tag-to-a-tag can be a
user-error.

Suggest that it may be a mistake with an advice message when
creating such a tag.  Those who do want to create a tag that point
at another tag regularly can turn it off with the usual advice
mechanism.

Reported-by: Robert Dailey <rcdailey.lists@gmail.com>
Helped-by: Jeff King <peff@peff.net>
Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Denton Liu <liu.denton@gmail.com>
[jc: fixed test style and tweaked the log message]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-12 10:52:35 +09:00
Jeff King ee4dfee227 rev-list: let traversal die when --missing is not in use
Commit 7c0fe330d5 (rev-list: handle missing tree objects properly,
2018-10-05) taught the traversal machinery used by git-rev-list to
ignore missing trees, so that rev-list could handle them itself.

However, it does so only by checking via oid_object_info_extended() that
the object exists at all. This can miss several classes of errors that
were previously detected by rev-list:

  - type mismatches (e.g., we expected a tree but got a blob)

  - failure to read the object data (e.g., due to bitrot on disk)

This is especially important because we use "rev-list --objects" as our
connectivity check to admit new objects to the repository, and it will
now miss these cases (though the bitrot one is less important here,
because we'd typically have just hashed and stored the object).

There are a few options to fix this:

 1. we could check these properties in rev-list when we do the existence
    check. This is probably too expensive in practice (perhaps even for
    a type check, but definitely for checking the whole content again,
    which implies loading each object into memory twice).

 2. teach the traversal machinery to differentiate between a missing
    object, and one that could not be loaded as expected. This probably
    wouldn't be too hard to detect type mismatches, but detecting bitrot
    versus a truly missing object would require deep changes to the
    object-loading code.

 3. have the traversal machinery communicate the failure to the caller,
    so that it can decide how to proceed without re-evaluting the object
    itself.

Of those, I think (3) is probably the best path forward. However, this
patch does none of them. In the name of expediently fixing the
regression to a normal "rev-list --objects" that we use for connectivity
checks, this simply restores the pre-7c0fe330d5 behavior of having the
traversal die as soon as it fails to load a tree (when --missing is set
to MA_ERROR, which is the default).

Note that we can't get rid of the object-existence check in
finish_object(), because this also handles blobs (which are not
otherwise checked at all by the traversal code).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-10 12:59:39 +09:00
Kyle Meyer f937bc2f86 add: error appropriately on repository with no commits
The previous commit made 'git add' abort when given a repository that
doesn't have a commit checked out.  However, the output upon failure
isn't appropriate:

  % git add repo
  warning: adding embedded git repository: repo
  hint: You've added another git repository inside your current repository.
  hint: [...]
  error: unable to index file 'repo/'
  fatal: adding files failed

The hint doesn't apply in this case, and the error message doesn't
tell the user why 'repo' couldn't be added to the index.

Provide better output by teaching add_to_index() to error when given a
git directory where HEAD can't be resolved.  To avoid the embedded
repository warning and hint, call check_embedded_repo() only after
add_file_to_index() succeeds because, in general, its output doesn't
make sense if adding to the index fails.

Signed-off-by: Kyle Meyer <kyle@kyleam.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-10 12:52:50 +09:00
Junio C Hamano fa1b86e457 Merge branch 'js/rebase-deprecate-preserve-merges'
"git rebase --rebase-merges" replaces its old "--preserve-merges"
option; the latter is now marked as deprecated.

* js/rebase-deprecate-preserve-merges:
  rebase: deprecate --preserve-merges
2019-04-10 02:14:24 +09:00
Junio C Hamano 20fe798b1b Merge branch 'ms/worktree-add-atomic-mkdir'
"git worktree add" used to do a "find an available name with stat
and then mkdir", which is race-prone.  This has been fixed by using
mkdir and reacting to EEXIST in a loop.

* ms/worktree-add-atomic-mkdir:
  worktree: fix worktree add race
2019-04-10 02:14:24 +09:00
Nguyễn Thái Ngọc Duy 7fdff47432 refs.c: remove the_repo from read_ref_at()
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-08 17:26:33 +09:00
SZEDER Gábor d2c4e6292a builtin rebase: use oideq()
Use oideq() instead of !oidcmp(), as it is more idiomatic, and might
give the compiler more opportunities to optimize.

Patch generated with 'contrib/coccinelle/free.cocci' and Coccinelle
v1.0.7 (previous Coccinelle versions don't notice this).

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-08 17:26:32 +09:00
SZEDER Gábor 7762f44ee0 builtin rebase: use FREE_AND_NULL
Use the macro FREE_AND_NULL to release memory allocated for
'head_name' and clear its pointer.

Patch generated with 'contrib/coccinelle/free.cocci' and Coccinelle
v1.0.7 (previous Coccinelle versions don't notice this).

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-08 17:26:32 +09:00
SZEDER Gábor a544fb08f8 blame: default to HEAD in a bare repo when no start commit is given
When 'git blame' is invoked without specifying the commit to start
blaming from, it starts from the given file's state in the work tree.
However, when invoked in a bare repository without a start commit,
then there is no work tree state to start from, and it dies with the
following error message:

  $ git rev-parse --is-bare-repository
  true
  $ git blame file.c
  fatal: this operation must be run in a work tree

This is misleading, because it implies that 'git blame' doesn't work
in bare repositories at all, but it does, in fact, work just fine when
it is given a commit to start from.

We could improve the error message, of course, but let's just default
to HEAD in a bare repository instead, as most likely that is what the
user wanted anyway (if they wanted to start from an other commit, then
they would have specified that in the first place).

'git annotate' is just a thin wrapper around 'git blame', so in the
same situation it printed the same misleading error message, and this
patch fixes it, too.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-08 17:02:26 +09:00
Thomas Gummerer 7cb7283adb ls-files: use correct format string
struct stat_data and struct cache_time both use unsigned ints for all
their members.  However the format string for 'git ls-files --debug'
currently uses %d for formatting these numbers.  This means that we
potentially print these values incorrectly if they are greater than
INT_MAX.

This has been the case since the --debug option was introduced in 'git
ls-files' in 8497421715 ("ls-files: learn a debugging dump format",
2010-07-31).

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-08 17:01:52 +09:00
Elijah Newren 5ec1e72823 Use 'unsigned short' for mode, like diff_filespec does
struct diff_filespec defines mode to be an 'unsigned short'.  Several
other places in the API which we'd like to interact with using a
diff_filespec used a plain unsigned (or unsigned int).  This caused
problems when taking addresses, so switch to unsigned short.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-08 16:02:07 +09:00
Denton Liu 01dc801ada tag: fix formatting
Wrap usage line at '<tagname>'. Also, wrap strings with '\n' at the end
of string fragments instead of at the beginning of the next string
fragment.

Convert a space-indent into a tab-indent for style.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-05 14:51:59 +09:00
SZEDER Gábor 79e3aa6624 index-pack: show progress while checking objects
When 'git index-pack' is run by 'git clone', its check_objects()
function usually doesn't take long enough to be a concern, but I just
run into a situation where it took about a minute or so: I
inadvertently put some memory pressure on my tiny laptop while cloning
linux.git, and then there was quite a long silence between the
"Resolving deltas" and "Checking connectivity" progress bars.

Show a progress bar during the loop of check_objects() to let the user
know that something is still going on.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 18:08:05 +09:00
Ævar Arnfjörð Bjarmason bf3d70fe93 gc: handle & check gc.reflogExpire config
Don't redundantly run "git reflog expire --all" when gc.reflogExpire
and gc.reflogExpireUnreachable are set to "never", and die immediately
if those configuration valuer are bad.

As an earlier "assert lack of early exit" change to the tests for "git
reflog expire" shows, an early check of gc.reflogExpire{Unreachable,}
isn't wanted in general for "git reflog expire", but it makes sense
for "gc" because:

 1) Similarly to 8ab5aa4bd8 ("parseopt: handle malformed --expire
    arguments more nicely", 2018-04-21) we'll now die early if the
    config variables are set to invalid values.

    We run "pack-refs" before "reflog expire", which can take a while,
    only to then die on an invalid gc.reflogExpire{Unreachable,}
    configuration.

 2) Not invoking the command at all means it won't show up in trace
    output, which makes what's going on more obvious when the two are
    set to "never".

 3) As a later change documents we lock the refs when looping over the
    refs to expire, even in cases where we end up doing nothing due to
    this config.

    For the reasons noted in the earlier "assert lack of early exit"
    change I don't think it's worth it to bend over backwards in "git
    reflog expire" itself to carefully detect if we'll really do
    nothing given the combination of all its possible options and skip
    that locking, but that's easy to detect here in "gc" where we'll
    only run "reflog expire" in a relatively simple mode.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 12:51:51 +09:00
Ævar Arnfjörð Bjarmason 7b8ce9c673 commit-graph verify: detect inability to read the graph
Change "commit-graph verify" to error on open() failures other than
ENOENT. As noted in the third paragraph of 283e68c72f ("commit-graph:
add 'verify' subcommand", 2018-06-27) and the test it added it's
intentional that "commit-graph verify" doesn't error out when the file
doesn't exist.

But let's not be overly promiscuous in what we accept. If we can't
read the file for other reasons, e.g. permission errors, bad file
descriptor etc. we'd like to report an error to the user.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 12:14:50 +09:00
Ævar Arnfjörð Bjarmason 67a530fab3 commit-graph: don't pass filename to load_commit_graph_one_fd_st()
An earlier change implemented load_commit_graph_one_fd_st() in a way
that was bug-compatible with earlier code in terms of the "graph file
%s is too small" error message printing out the path to the
commit-graph (".git/objects/info/commit-graph").

But change that, because:

 * A function that takes an already-open file descriptor also needing
   the filename isn't very intuitive.

 * The vast majority of errors we might emit when loading the graph
   come from parse_commit_graph(), which doesn't report the
   filename. Let's not do that either in this case for consistency.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 12:14:50 +09:00
Ævar Arnfjörð Bjarmason 61df89c8e5 commit-graph: don't early exit(1) on e.g. "git status"
Make the commit-graph loading code work as a library that returns an
error code instead of calling exit(1) when the commit-graph is
corrupt. This means that e.g. "status" will now report commit-graph
corruption as an "error: [...]" at the top of its output, but then
proceed to work normally.

This required splitting up the load_commit_graph_one() function so
that the code that deals with open()-ing and stat()-ing the graph can
now be called independently as open_commit_graph().

This is needed because "commit-graph verify" where the graph doesn't
exist isn't an error. See the third paragraph in
283e68c72f ("commit-graph: add 'verify' subcommand",
2018-06-27). There's a bug in that logic where we conflate the
intended ENOENT with other errno values (e.g. EACCES), but this change
doesn't address that. That'll be addressed in a follow-up change.

I'm then splitting most of the logic out of load_commit_graph_one()
into load_commit_graph_one_fd_st(), which allows for providing an
existing file descriptor and stat information to the loading
code. This isn't strictly needed, but it would be redundant and
confusing to open() and stat() the file twice for some of the
codepaths, this allows for calling open_commit_graph() followed by
load_commit_graph_one_fd_st(). The "graph_file" still needs to be
passed to that function for the the "graph file %s is too small" error
message.

This leaves load_commit_graph_one() unused by everything except the
internal prepare_commit_graph_one() function, so let's mark it as
"static". If someone needs it in the future we can remove the "static"
attribute. I could also rewrite its sole remaining
user ("prepare_commit_graph_one()") to use
load_commit_graph_one_fd_st() instead, but let's leave it at this.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 12:14:50 +09:00
brian m. carlson ebe4df59c4 builtin/difftool: use parse_oid_hex
Instead of using get_oid_hex and adding constants to the result, use
parse_oid_hex to make this code independent of the hash size.

Additionally, correct a typo that would cause us to print one too few
characters on error, since we will already have incremented the pointer
to point to the beginning of the object ID before we get to printing the
error message.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 11:57:39 +09:00
brian m. carlson 87003d2c94 builtin/get-tar-commit-id: make hash size independent
To make this code independent of the hash size, verify that the length
of the comment is equal to that of any supported hash algorithm.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 11:57:39 +09:00
Rene Scharfe 3548726cd7 get-tar-commit-id: parse comment record
Parse pax comment records properly and get rid of magic numbers for
acceptable comment length.  This simplifies a later change to handle
longer hashes.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 11:57:39 +09:00
brian m. carlson fbfc089d91 builtin/pull: make hash-size independent
Instead of using get_oid_hex and GIT_SHA1_HEXSZ, use parse_oid_hex to
avoid the need for a constant and simplify the code.

Additionally, fix some comments to refer to object IDs instead of SHA-1
and update a constant used to provide an allocation hint.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 11:57:38 +09:00
brian m. carlson 24dd363ed5 builtin/am: make hash size independent
Instead of using GIT_SHA1_HEXSZ, switch to using the_hash_algo and
parse_oid_hex to parse the lines involved in rebasing notes.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 11:57:38 +09:00
brian m. carlson 1c4675dc57 builtin/name-rev: make hash-size independent
Use the_hash_algo when parsing instead of GIT_SHA1_HEXSZ so that this
function works with any size hash.  Rename the variable forty to
counter, as this is a better name and is independent of the hash size.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 11:57:38 +09:00
brian m. carlson 538b152324 object-store: rename and expand packed_git's sha1 member
This member is used to represent the pack checksum of the pack in
question.  Expand this member to be GIT_MAX_RAWSZ bytes in length so it
works with longer hashes and rename it to be "hash" instead of "sha1".
This transformation was made with a change to the definition and the
following semantic patch:

@@
struct packed_git *E1;
@@
- E1->sha1
+ E1->hash

@@
struct packed_git E1;
@@
- E1.sha1
+ E1.hash

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 11:57:38 +09:00
brian m. carlson 3c7714485d pack-bitmap: switch hash tables to use struct object_id
Instead of storing unsigned char pointers in the hash tables, switch to
storing instances of struct object_id. Update several internal functions
and one external function to take pointers to struct object_id.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-01 11:57:37 +09:00
Nguyễn Thái Ngọc Duy cdb5330a9b am: avoid diff_opt_parse()
diff_opt_parse() is a heavy hammer to just set diff filter. But it's
the only way because of the diff_status_letters[] mapping. Add a new
API to set diff filter and use it in git-am. diff_opt_parse()'s only
remaining call site in revision.c will be gone soon and having it here
just because of git-am does not make sense.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-24 22:21:24 +09:00
Nguyễn Thái Ngọc Duy 16bb3d714d diff --no-index: use parse_options() instead of diff_opt_parse()
While at there, move exit() back to the caller. It's easier to see the
flow that way than burying it in diff-no-index.c

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-24 22:21:24 +09:00
Nguyễn Thái Ngọc Duy c380a48c8b range-diff: use parse_options() instead of diff_opt_parse()
Diff's internal option parsing is now done with 'struct option', which
makes it possible to combine all diff options to range-diff and parse
everything all at once. Parsing code becomes simpler, and we get a
looong 'git range-diff -h'

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-24 22:21:24 +09:00
Nguyễn Thái Ngọc Duy 6eff409e8a checkout: prevent losing staged changes with --merge
When --merge is specified, we may need to do a real merge (instead of
three-way tree unpacking), the steps are best seen in git-checkout.sh
version before it's removed:

    # Match the index to the working tree, and do a three-way.
    git diff-files --name-only | git update-index --remove --stdin &&
    work=`git write-tree` &&
    git read-tree $v --reset -u $new || exit

    git merge-recursive $old -- $new $work

    # Do not register the cleanly merged paths in the index yet.
    # this is not a real merge before committing, but just carrying
    # the working tree changes along.
    unmerged=`git ls-files -u`
    git read-tree $v --reset $new
    case "$unmerged" in
    '')     ;;
    *)
            (
                    z40=0000000000000000000000000000000000000000
                    echo "$unmerged" |
                    sed -e 's/^[0-7]* [0-9a-f]* /'"0 $z40 /"
                    echo "$unmerged"
            ) | git update-index --index-info
            ;;
    esac

Notice the last 'read-tree --reset' step. We restore worktree back to
'new' tree after worktree's messed up by merge-recursive. If there are
staged changes before this whole command sequence is executed, they
are lost because they are unlikely part of the 'new' tree to be
restored.

There is no easy way to fix this. Elijah may have something up his
sleeves [1], but until then, check if there are staged changes and
refuse to run and lose them. The user would need to do "git reset" to
continue in this case.

A note about the test update. 'checkout -m' in that test will fail
because a deletion is staged. This 'checkout -m' was previously needed
to verify quietness behavior of unpack-trees. But a different check
has been put in place in the last patch. We can safely drop
'checkout -m' now.

[1] CABPp-BFoL_U=bzON4SEMaQSKU2TKwnOgNqjt5MUaOejTKGUJxw@mail.gmail.com

Reported-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-24 21:35:34 +09:00
Nguyễn Thái Ngọc Duy 3e41485d85 read-tree: add --quiet
read-tree is basically the front end of unpack-trees code and shoud
expose all of its functionality (unless it's designed for internal
use). This "opts.quiet" (formerly "opts.gently") was added for
builtin/checkout.c but there is no reason why other read-tree users
won't find this useful.

The test that is updated to run 'read-tree --quiet' was added because
unpack-trees was accidentally not being quiet [1] in 6a143aa2b2
(checkout -m: attempt merge when deletion of path was staged -
2014-08-12). Because checkout is the only "opts.quiet" user, there was
no other way to test quiet behavior. But we can now test it directly.

6a143aa2b2 was manually reverted to verify that read-tree --quiet
works correctly (i.e. test_must_be_empty fails).

[1] the commit message there say "errors out instead of performing a
    merge" but I'm pretty sure the "performing a merge" happens anyway
    even before that commit. That line should say "errors out
    _in addition to_ performing a merge"

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-24 21:35:34 +09:00
Nguyễn Thái Ngọc Duy b165fac8c1 unpack-trees: rename "gently" flag to "quiet"
The gently flag was added in 17e4642667 (Add flag to make unpack_trees()
not print errors. - 2008-02-07) to suppress error messages. The name
"gently" does not quite express that. Granted, being quiet is gentle but
it could mean not performing some other actions. Rename the flag to
"quiet" to be more on point.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-24 21:35:34 +09:00
Nguyễn Thái Ngọc Duy 5a1dbd48bc commit: improve error message in "-a <paths>" case
I did something stupid today and got

    $ git commit -a --fixup= @^
    fatal: Paths with -a does not make sense.

which didn't make any sense (at least for the first few seconds).

Include the first path(spec) in the error message to help spot the
problem quicker. Now it shows

    fatal: paths '@^ ...' with -a does not make sense

which should ring some bell because @^ should clearly not be considered
a path.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-22 16:44:37 +09:00
Jeff Hostetler d829223a42 trace2:data: add trace2 data to midx
Log multi-pack-index command mode.
Log number of objects and packfiles in the midx.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-22 14:31:11 +09:00
Nguyễn Thái Ngọc Duy a7256debd4 checkout.txt: note about losing staged changes with --merge
If you have staged changes in path A and perform 'checkout
--merge' (which could result in conflicts in a totally unrelated path
B), changes in A will be gone. Which is unexpected. We are supposed
to keep all changes, or kick and scream otherwise.

This is the result of how --merge is implemented, from the very first
day in 1be0659efc (checkout: merge local modifications while switching
branches., 2006-01-12):

1. a merge is done, unmerged entries are collected
2. a hard switch to a new branch is done, then unmerged entries added
   back

There is no trivial fix for this. Going with 3-way merge one file at a
time loses rename detection. Going with 3-way merge by trees requires
teaching the algorithm to pick up staged changes. And even if we detect
staged changes with --merge and abort for safety, an option to continue
--merge is very weird. Such an option would keep worktree changes, but
drop staged changes.

Because the problem has been with us since the introduction of --merge
and everybody has been pretty happy (except Phillip, who found this
problem), I'll just take a note here to acknowledge it and wait for
merge wizards to come in and work their magic. There may be a way
forward [1].

[1] CABPp-BFoL_U=bzON4SEMaQSKU2TKwnOgNqjt5MUaOejTKGUJxw@mail.gmail.com

Reported-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-21 12:07:41 +09:00
Jeff King 95be717cd5 parse_opt_ref_sorting: always use with NONEG flag
The "--sort" parameter of for-each-ref, etc, does not handle negation,
and instead returns an error to the parse-options code. But neither
piece of code prints anything for the user, which may leave them
confused:

  $ git for-each-ref --no-sort
  $ echo $?
  129

As the comment in the callback function notes, this probably should
clear the list, which would make it consistent with other list-like
options (i.e., anything that uses OPT_STRING_LIST currently).
Unfortunately that's a bit tricky due to the way the ref-filter code
works. But in the meantime, let's at least make the error a little less
confusing:

  - switch to using PARSE_OPT_NONEG in the option definition, which will
    cause the options code to produce a useful message

  - since this was cut-and-pasted to four different spots, let's define
    a single OPT_REF_SORT() macro that we can use everywhere

  - the callback can use BUG_ON_OPT_NEG() to make sure the correct flags
    are used (incidentally, this also satisfies -Wunused-parameters,
    since we're now looking at "unset")

  - expand the comment into a NEEDSWORK to make it clear that the
    direction is right, but the details need to be worked out

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-21 12:03:35 +09:00
Thomas Gummerer 8e407bc817 stash: setup default diff output format if necessary
In the scripted 'git stash show' when no arguments are passed, we just
pass '--stat' to 'git diff'.  When any argument is passed to 'stash
show', we no longer pass '--stat' to 'git diff', and pass whatever
flags are passed directly through to 'git diff'.

By default 'git diff' shows the patch output.  So when a user uses
'git stash show --patience', they would be shown the diff as expected,
using the patience algorithm.  '--patience' in this case only changes
the diff algorithm, but does not cause 'git diff' to show the diff by
itself.  The diff is shown because that's the default behaviour of
'git diff'.

In the C version of 'git stash show', we try to emulate that behaviour
using the internal diff API.  However we forgot to set up the default
output format, in case it wasn't set by any of the flags that were
passed through.  So 'git stash show --patience' in the builtin version
of stash would be completely silent, while it would show the diff in
the scripted version.

The same thing would happen for other flags that only affect the way a
patch is displayed, rather than switching to a different output format
than the default one.

Fix this by setting up the default output format for 'git diff'.

Reported-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-21 10:41:56 +09:00
Jeff King 0f804b0bac fetch_pack(): drop unused parameters
We don't need the caller of fetch_pack() to pass in "dest", which is the
remote URL. Since ba227857d2 (Reduce the number of connects when
fetching, 2008-02-04), the caller is responsible for calling
git_connect() itself, and our "dest" parameter is unused.

That commit also started passing us the resulting "conn" child_process
from git_connect(). But likewise, we do not need do anything with it.
The descriptors in "fd" are enough for us, and the caller is responsible
for cleaning up "conn".

We can just drop both parameters.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-20 18:34:09 +09:00
Jeff King c5c33504c9 report_path_error(): drop unused prefix parameter
This hasn't been used since 17ddc66e70 (convert report_path_error to
take struct pathspec, 2013-07-14), as the names in the struct will have
already been prefixed when they were parsed.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-20 18:34:09 +09:00
Jeff King 5bb1cb6d02 update-index: drop unused prefix_length parameter from do_reupdate()
The prefix is always a NUL-terminated string, and we just end up passing
it along to parse_pathspec() anyway (which does not even take a length).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-20 18:34:09 +09:00
Jeff King af117077d3 log: drop unused "len" from show_tagger()
We pass the length of the found "tagger" line to show_tagger(), but it
does not use it; instead, it passes the string to pp_user_info(), which
reads until newline or NUL. This is OK for our purposes because we
always read the object contents into a buffer with an extra NUL (and
indeed, our sole caller already relies on this by using starts_with).

Let's drop the ignored parameter. And while we're touching the caller,
let's use skip_prefix() to avoid a magic number.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-20 18:34:09 +09:00
Jeff King 7954d365c6 log: drop unused rev_info from early output
The early output code passes around a rev_info struct but doesn't need
it. The setup step only turns on global signal handlers, and the
"estimate" step is done completely from the rev->commits list that is
passed in separately.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-20 18:34:08 +09:00
Junio C Hamano 0c45fa32ec Merge branch 'br/commit-tree-parseopt'
The command line parser of "git commit-tree" has been rewritten to
use the parse-options API.

* br/commit-tree-parseopt:
  commit-tree: utilize parse-options api
2019-03-20 15:16:08 +09:00
Junio C Hamano 6b5688b760 Merge branch 'ma/clear-repository-format'
The setup code has been cleaned up to avoid leaks around the
repository_format structure.

* ma/clear-repository-format:
  setup: fix memory leaks with `struct repository_format`
  setup: free old value before setting `work_tree`
2019-03-20 15:16:07 +09:00
Junio C Hamano 83b13e284c Merge branch 'jk/virtual-objects-do-exist'
A recent update broke "is this object available to us?" check for
well-known objects like an empty tree (which should yield "yes",
even when there is no on-disk object for an empty tree), which has
been corrected.

* jk/virtual-objects-do-exist:
  rev-list: allow cached objects in existence check
2019-03-20 15:16:07 +09:00
Junio C Hamano 27cdbdd134 Merge branch 'jk/no-sigpipe-during-network-transport'
On platforms where "git fetch" is killed with SIGPIPE (e.g. OSX),
the upload-pack that runs on the other end that hangs up after
detecting an error could cause "git fetch" to die with a signal,
which led to a flakey test.  "git fetch" now ignores SIGPIPE during
the network portion of its operation (this is not a problem as we
check the return status from our write(2)s).

* jk/no-sigpipe-during-network-transport:
  fetch: ignore SIGPIPE during network operation
  fetch: avoid calling write_or_die()
2019-03-20 15:16:06 +09:00
Junio C Hamano ea327760d3 Merge branch 'jk/fsck-doc'
"git fsck --connectivity-only" omits computation necessary to sift
the objects that are not reachable from any of the refs into
unreachable and dangling.  This is now enabled when dangling
objects are requested (which is done by default, but can be
overridden with the "--no-dangling" option).

* jk/fsck-doc:
  fsck: always compute USED flags for unreachable objects
  doc/fsck: clarify --connectivity-only behavior
2019-03-20 15:16:06 +09:00
Junio C Hamano 9fbcc3d203 Merge branch 'js/rebase-orig-head-fix'
"git rebase" that was reimplemented in C did not set ORIG_HEAD
correctly, which has been corrected.

* js/rebase-orig-head-fix:
  built-in rebase: set ORIG_HEAD just once, before the rebase
  built-in rebase: demonstrate that ORIG_HEAD is not set correctly
  built-in rebase: use the correct reflog when switching branches
  built-in rebase: no need to check out `onto` twice
2019-03-20 15:16:05 +09:00
Ævar Arnfjörð Bjarmason d03ebd411c rebase: remove the rebase.useBuiltin setting
Remove the rebase.useBuiltin setting, which was added as an escape
hatch to disable the builtin version of rebase first released with Git
2.20.

See [1] for the initial implementation of rebase.useBuiltin, and [2]
and [3] for the documentation and corresponding
GIT_TEST_REBASE_USE_BUILTIN option.

Carrying the legacy version is a maintenance burden as seen in
7e097e27d3 ("legacy-rebase: backport -C<n> and --whitespace=<option>
checks", 2018-11-20) and 9aea5e9286 ("rebase: fix regression in
rebase.useBuiltin=false test mode", 2019-02-13). Since the built-in
version has been shown to be stable enough let's remove the legacy
version.

As noted in [3] having use_builtin_rebase() shell out to get its
config doesn't make any sense anymore, that was done for the purposes
of spawning the legacy rebase without having modified any global
state. Let's instead handle this case in rebase_config().

There's still a bunch of references to git-legacy-rebase in po/*.po,
but those will be dealt with in time by the i18n effort.

Even though this configuration variable only existed two releases
let's not entirely delete the entry from the docs, but note its
absence. Individual versions of git tend to be around for a while due
to distro packaging timelines, so e.g. if we're "lucky" a given
version like 2.21 might be installed on say OSX for half a decade.

That'll mean some people probably setting this in config, and then
when they later wonder if it's needed they can Google search the
config option name or check it in git-config. It also allows us to
refer to the docs from the warning for details.

1. 55071ea248 ("rebase: start implementing it as a builtin",
   2018-08-07)
2. d8d0a546f0 ("rebase doc: document rebase.useBuiltin", 2018-11-14)
3. 62c23938fa ("tests: add a special setup where rebase.useBuiltin is
   off", 2018-11-14)
3. https://public-inbox.org/git/nycvar.QRO.7.76.6.1903141544110.41@tvgsbejvaqbjf.bet/

Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-20 09:25:10 +09:00
Ævar Arnfjörð Bjarmason cd8eb3a094 gc: refactor a "call me once" pattern
Change an idiom we're using to ensure that gc_before_repack() only
does work once (see 62aad1849f ("gc --auto: do not lock refs in the
background", 2014-05-25)) to be more obvious.

Nothing except this function cares about the "pack_refs" and
"prune_reflogs" variables, so let's not leave the reader wondering if
they're being zero'd out for later use somewhere else.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-18 15:09:40 +09:00
Ævar Arnfjörð Bjarmason e5cdbd5f70 gc: convert to using the_hash_algo
There's been a lot of changing of the hardcoded "40" values to
the_hash_algo->hexsz, but we've so far missed this one where we
hardcoded 38 for the loose object file length.

This is because a SHA-1 like abcde[...] gets turned into
objects/ab/cde[...]. There's no reason to suppose the same won't be
the case for SHA-256, and reading between the lines in
hash-function-transition.txt the format is planned to be the same.

In the future we may want to further modify this code for the hash
function transition. There's a potential pathological case here where
we'll only consider the loose objects for the currently active hash,
but objects for that hash will share a directory storage with the
other hash.

Thus we could theoretically have e.g. 1k SHA-1 loose objects, and 1
million SHA-256 objects. Then not notice that we need to pack them
because we're currently using SHA-1, even though our FS may be
straining under the stress of such humongous directories.

So assuming that "gc" eventually learns to pack up both SHA-1 and
SHA-256 objects regardless of what the current the_hash_algo is,
perhaps this check should be changed to consider all files in
objects/17/ matching [0-9a-f] 38 or 62 characters in length (i.e. both
SHA-1 and SHA-256).

But none of that is something we need to worry about now, and
supporting both 38 and 62 characters depending on "the_hash_algo"
removes another case of SHA-1 hardcoding.

As noted in [1] I'm making no effort to somehow remove the hardcoding
for "2" as in "use the first two hexdigits for the directory
name". There's no indication that that'll ever change, and somehow
generalizing it here would be a drop in the ocean, so there's no point
in doing that. It also couldn't be done without coming up with some
generalized version of the magical "objects/17" directory. See [2] for
a discussion of that directory.

1. https://public-inbox.org/git/874l84ber7.fsf@evledraar.gmail.com/

2. https://public-inbox.org/git/87k1mta9x5.fsf@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-18 15:09:39 +09:00
Johannes Schindelin 20de316e33 difftool: allow running outside Git worktrees with --no-index
As far as this developer can tell, the conversion from a Perl script to
a built-in caused the regression in the difftool that it no longer runs
outside of a Git worktree (with `--no-index`, of course).

It is a bit embarrassing that it took over two years after retiring the
Perl version to discover this regression, but at least we now know, and
can do something, about it.

This fixes https://github.com/git-for-windows/git/issues/2123

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-18 11:48:19 +09:00
Johannes Schindelin 1dcda05820 difftool: remove obsolete (and misleading) comment
We will always spawn something from `git difftool`, so we will always
have to set `GIT_DIR` and `GIT_WORK_TREE`.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-18 11:44:12 +09:00
Ævar Arnfjörð Bjarmason 8bf14444c3 gc: remove redundant check for gc_auto_threshold
Checking gc_auto_threshold in too_many_loose_objects() was added in
17815501a8 ("git-gc --auto: run "repack -A -d -l" as necessary.",
2007-09-17) when need_to_gc() itself was also reliant on
gc_auto_pack_limit before its early return:

    gc_auto_threshold <= 0 && gc_auto_pack_limit <= 0

When that check was simplified to just checking "gc_auto_threshold <=
0" in b14d255ba8 ("builtin-gc.c: allow disabling all auto-gc'ing by
assigning 0 to gc.auto", 2008-03-19) this unreachable code should have
been removed. We only call too_many_loose_objects() from within
need_to_gc() itself, which will return if this condition holds, and in
cmd_gc() which will return before ever getting to "auto_gc &&
too_many_loose_objects()" if "auto_gc && !need_to_gc()" is true
earlier in the function.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-14 13:55:28 +09:00
Johannes Schindelin 287853392a mingw: respect core.hidedotfiles = false in git-init again
This is a brown paper bag. When adding the tests, we actually failed
to verify that the config variable is heeded in git-init at all. And
when changing the original patch that marked the .git/ directory as
hidden after reading the config, it was lost on this developer that
the new code would use the hide_dotfiles variable before the config
was read.

The fix is obvious: read the (limited, pre-init) config *before*
creating the .git/ directory.

Please note that we cannot remove the identical-looking `git_config()`
call from `create_default_files()`: we create the `.git/` directory
between those calls. If we removed it, and if the parent directory is
in a Git worktree, and if that worktree's `.git/config` contained any
`init.templatedir` setting, we would all of a sudden pick that up.

This fixes https://github.com/git-for-windows/git/issues/789

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-12 16:30:26 +09:00
Johannes Schindelin 427c3bd28a rebase: deprecate --preserve-merges
We have something much better now: --rebase-merges (which is a
complete re-design --preserve-merges, with a lot of issues fixed such as
the inability to reorder commits with --preserve-merges).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-12 16:29:00 +09:00
Michal Suchanek 7af01f2367 worktree: fix worktree add race
Git runs a stat loop to find a worktree name that's available and
then does mkdir on the found name. Turn it to mkdir loop to avoid
another invocation of worktree add finding the same free name and
creating the directory first.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Acked-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-12 15:56:11 +09:00
Thomas Gummerer 7db9302d7c stash: pass pathspec as pointer
Passing the pathspec by value is potentially confusing, as the copy is
only a shallow copy, so save the overhead of the copy, and pass the
pathspec struct as a pointer.

In addition use copy_pathspec to copy the pathspec into
rev.prune_data, so the copy is a proper deep copy, and owned by the
revision API, as that's what the API expects.

Reported-by: Jeff King <peff@peff.net>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-12 15:49:05 +09:00
Thomas Gummerer eabf7405ab stash: drop unused parameter
Drop the unused prefix parameter in do_drop_stash.

We also have an unused "prefix" parameter in the 'create_stash'
function, however we leave that in place for symmetry with the other
top-level functions.

Reported-by: Jeff King <peff@peff.net>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-11 10:41:24 +09:00
Johannes Schindelin 1366c78c23 built-in stash: handle :(glob) pathspecs again
When passing a list of pathspecs to, say, `git add`, we need to be
careful to use the original form, not the parsed form of the pathspecs.

This makes a difference e.g. when calling

	git stash -- ':(glob)**/*.txt'

where the original form includes the `:(glob)` prefix while the parsed
form does not.

However, in the built-in `git stash`, we passed the parsed (i.e.
incorrect) form, and `git add` would fail with the error message:

	fatal: pathspec '**/*.txt' did not match any files

at the stage where `git stash` drops the changes from the worktree, even
if `refs/stash` has been actually updated successfully.

This fixes https://github.com/git-for-windows/git/issues/2037

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-08 10:38:00 +09:00
Brandon Richardson cbdeab98e8 commit-tree: utilize parse-options api
Rather than parse options manually, which is both difficult to
read and error prone, parse options supplied to commit-tree
using the parse-options api.

It was discovered that the --no-gpg-sign option was documented
but not implemented in commit 70ddbd7767 (commit-tree: add missing
--gpg-sign flag, 2019-01-19), and the existing implementation
would attempt to translate the option as a tree oid. It was also
suggested earlier in commit 55ca3f99ae (commit-tree: add and document
--no-gpg-sign, 2013-12-13) that commit-tree should be migrated to
utilize the parse-options api, which could help prevent mistakes
like this in the future. Hence this change.

Also update the documentation to better describe that mixing
`-m` and `-F` options will correctly compose commit log messages in the
order in which the options are given.

In the process, mark various strings for translation.

Signed-off-by: Brandon Richardson <brandon1024.br@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-08 10:31:24 +09:00
Junio C Hamano 12e5bdd9c4 Merge branch 'jk/diff-no-index-initialize'
"git diff --no-index" may still want to access Git goodies like
--ext-diff and --textconv, but so far these have been ignored,
which has been corrected.

* jk/diff-no-index-initialize:
  diff: reuse diff setup for --no-index case
2019-03-07 09:59:59 +09:00
Junio C Hamano b0e7fb2e5c Merge branch 'nd/completion-more-parameters'
The command line completion (in contrib/) has been taught to
complete more subcommand parameters.

* nd/completion-more-parameters:
  completion: add more parameter value completion
2019-03-07 09:59:58 +09:00
Junio C Hamano 4751a1673c Merge branch 'ab/receive-pack-use-after-free-fix'
Memfix.

* ab/receive-pack-use-after-free-fix:
  receive-pack: fix use-after-free bug
2019-03-07 09:59:57 +09:00
Junio C Hamano f7213a3d33 Merge branch 'jk/prune-optim'
"git prune" has been taught to take advantage of reachability
bitmap when able.

* jk/prune-optim:
  t5304: rename "sha1" variables to "oid"
  prune: check SEEN flag for reachability
  prune: use bitmaps for reachability traversal
  prune: lazily perform reachability traversal
2019-03-07 09:59:56 +09:00
Junio C Hamano 32038fef00 Merge branch 'jh/trace2'
A more structured way to obtain execution trace has been added.

* jh/trace2:
  trace2: add for_each macros to clang-format
  trace2: t/helper/test-trace2, t0210.sh, t0211.sh, t0212.sh
  trace2:data: add subverb for rebase
  trace2:data: add subverb to reset command
  trace2:data: add subverb to checkout command
  trace2:data: pack-objects: add trace2 regions
  trace2:data: add trace2 instrumentation to index read/write
  trace2:data: add trace2 hook classification
  trace2:data: add trace2 transport child classification
  trace2:data: add trace2 sub-process classification
  trace2:data: add editor/pager child classification
  trace2:data: add trace2 regions to wt-status
  trace2: collect Windows-specific process information
  trace2: create new combined trace facility
  trace2: Documentation/technical/api-trace2.txt
2019-03-07 09:59:56 +09:00
Junio C Hamano ebf846c008 Merge branch 'rj/prune-packed-excess-args'
"git prune-packed" did not notice and complain against excess
arguments given from the command line, which now it does.

* rj/prune-packed-excess-args:
  prune-packed: check for too many arguments
2019-03-07 09:59:55 +09:00
Junio C Hamano c425d361f5 Merge branch 'en/combined-all-paths'
Output from "diff --cc" did not show the original paths when the
merge involved renames.  A new option adds the paths in the
original trees to the output.

* en/combined-all-paths:
  log,diff-tree: add --combined-all-paths option
2019-03-07 09:59:54 +09:00
Junio C Hamano cf0879f7e9 Merge branch 'sc/pack-redundant'
Update the implementation of pack-redundant for performance in a
repository with many packfiles.

* sc/pack-redundant:
  pack-redundant: consistent sort method
  pack-redundant: rename pack_list.all_objects
  pack-redundant: new algorithm to find min packs
  pack-redundant: delete redundant code
  pack-redundant: delay creation of unique_objects
  t5323: test cases for git-pack-redundant
2019-03-07 09:59:54 +09:00
Junio C Hamano 3710f60a80 Merge branch 'du/branch-show-current'
"git branch" learned a new subcommand "--show-current".

* du/branch-show-current:
  branch: introduce --show-current display option
2019-03-07 09:59:54 +09:00
Junio C Hamano 4e021dc28e Merge branch 'wh/author-committer-ident-config'
Four new configuration variables {author,committer}.{name,email}
have been introduced to override user.{name,email} in more specific
cases.

* wh/author-committer-ident-config:
  config: allow giving separate author and committer idents
2019-03-07 09:59:53 +09:00
Junio C Hamano 54b469b9e9 Merge branch 'nd/diff-parseopt'
The diff machinery, one of the oldest parts of the system, which
long predates the parse-options API, uses fairly long and complex
handcrafted option parser.  This is being rewritten to use the
parse-options API.

* nd/diff-parseopt:
  diff.c: convert --raw
  diff.c: convert -W|--[no-]function-context
  diff.c: convert -U|--unified
  diff.c: convert -u|-p|--patch
  diff.c: prepare to use parse_options() for parsing
  diff.h: avoid bit fields in struct diff_flags
  diff.h: keep forward struct declarations sorted
  parse-options: allow ll_callback with OPTION_CALLBACK
  parse-options: avoid magic return codes
  parse-options: stop abusing 'callback' for lowlevel callbacks
  parse-options: add OPT_BITOP()
  parse-options: disable option abbreviation with PARSE_OPT_KEEP_UNKNOWN
  parse-options: add one-shot mode
  parse-options.h: remove extern on function prototypes
2019-03-07 09:59:52 +09:00
Junio C Hamano 7d0c1f4556 Merge branch 'tg/checkout-no-overlay'
"git checkout --no-overlay" can be used to trigger a new mode of
checking out paths out of the tree-ish, that allows paths that
match the pathspec that are in the current index and working tree
and are not in the tree-ish.

* tg/checkout-no-overlay:
  revert "checkout: introduce checkout.overlayMode config"
  checkout: introduce checkout.overlayMode config
  checkout: introduce --{,no-}overlay option
  checkout: factor out mark_cache_entry_for_checkout function
  checkout: clarify comment
  read-cache: add invalidate parameter to remove_marked_cache_entries
  entry: support CE_WT_REMOVE flag in checkout_entry
  entry: factor out unlink_entry function
  move worktree tests to t24*
2019-03-07 09:59:51 +09:00
Johannes Schindelin 7906af0cb8 tests: add a special setup where stash.useBuiltin is off
Add a GIT_TEST_STASH_USE_BUILTIN=false test mode which is equivalent
to running with stash.useBuiltin=false. This is needed to spot that
we're not introducing any regressions in the legacy stash version
while we're carrying both it and the new built-in version.

This imitates the equivalent treatment for the built-in rebase in
62c23938fa (tests: add a special setup where rebase.useBuiltin is off,
2018-11-14).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Johannes Schindelin 90a462725e stash: optionally use the scripted version again
We recently converted the `git stash` command from Unix shell scripts
to builtins.

Let's end users a way out when they discover a bug in the
builtin command: `stash.useBuiltin`.

As the file name `git-stash` is already in use, let's rename the
scripted backend to `git-legacy-stash`.

To make the test suite pass with `stash.useBuiltin=false`, this commit
also backports rudimentary support for `-q` (but only *just* enough
to appease the test suite), and adds a super-ugly hack to force exit
code 129 for `git stash -h`.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu 40af146834 stash: convert stash--helper.c into stash.c
The old shell script `git-stash.sh`  was removed and replaced
entirely by `builtin/stash.c`. In order to do that, `create` and
`push` were adapted to work without `stash.sh`. For example, before
this commit, `git stash create` called `git stash--helper create
--message "$*"`. If it called `git stash--helper create "$@"`, then
some of these changes wouldn't have been necessary.

This commit also removes the word `helper` since now stash is
called directly and not by a shell script.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu 48ee24ab72 stash: replace all write-tree child processes with API calls
Avoid spawning write-tree child processes by replacing the calls with
in-core API calls.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu ef0f0b4509 stash: optimize get_untracked_files() and check_changes()
This commits introduces a optimization by avoiding calling the
same functions again. For example, `git stash push -u`
would call at some points the following functions:

 * `check_changes()` (inside `do_push_stash()`)
 * `do_create_stash()`, which calls: `check_changes()` and
`get_untracked_files()`

Note that `check_changes()` also calls `get_untracked_files()`.
So, `check_changes()` is called 2 times and `get_untracked_files()`
3 times.

The old function `check_changes()` now consists of two functions:
`get_untracked_files()` and `check_changes_tracked_files()`.

These are the call chains for `push` and `create`:

 * `push_stash()` -> `do_push_stash()` -> `do_create_stash()`

 * `create_stash()` -> `do_create_stash()`

To prevent calling the same functions over and over again,
`check_changes()` inside `do_create_stash()` is now placed
in the caller functions (`create_stash()` and `do_push_stash()`).
This way `check_changes()` and `get_untracked files()` are called
only one time.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu 64fe9c26a4 stash: convert save to builtin
Add stash save to the helper and delete functions which are no
longer needed (`show_help()`, `save_stash()`, `push_stash()`,
`create_stash()`, `clear_stash()`, `untracked_files()` and
`no_changes()`).

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu 1ac528c0b0 stash: make push -q quiet
There is a change in behaviour with this commit. When there was
no initial commit, the shell version of stash would still display
a message. This commit makes `push` to not display any message if
`--quiet` or `-q` is specified. Add tests for `--quiet`.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu d553f538b8 stash: convert push to builtin
Add stash push to the helper.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu d4788af875 stash: convert create to builtin
Add stash create to the helper.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Helped-by: Matthew Kraai <mkraai@its.jnj.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu 41e0dd55c4 stash: convert store to builtin
Add stash store to the helper and delete the store_stash function
from the shell script.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu dc7bd382b1 stash: convert show to builtin
Add stash show to the helper and delete the show_stash, have_stash,
assert_stash_like, is_stash_like and parse_flags_and_rev functions
from the shell script now that they are no longer needed.

In shell version, although `git stash show` accepts `--index` and
`--quiet` options, it ignores them. In C, both options are passed
further to `git diff`.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Paul-Sebastian Ungureanu 130f2697da stash: convert list to builtin
Add stash list to the helper and delete the list_stash function
from the shell script.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Joel Teichroeb c4de61d7a9 stash: convert pop to builtin
Add stash pop to the helper and delete the pop_stash, drop_stash,
assert_stash_ref functions from the shell script now that they
are no longer needed.

Signed-off-by: Joel Teichroeb <joel@teichroeb.net>
Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Joel Teichroeb 577c1995e8 stash: convert branch to builtin
Add stash branch to the helper and delete the apply_to_branch
function from the shell script.

Checkout does not currently provide a function for checking out
a branch as cmd_checkout does a large amount of sanity checks
first that we require here.

Signed-off-by: Joel Teichroeb <joel@teichroeb.net>
Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Joel Teichroeb 4e2dd39303 stash: convert drop and clear to builtin
Add the drop and clear commands to the builtin helper. These two
are each simple, but are being added together as they are quite
related.

We have to unfortunately keep the drop and clear functions in the
shell script as functions are called with parameters internally
that are not valid when the commands are called externally. Once
pop is converted they can both be removed.

Signed-off-by: Joel Teichroeb <joel@teichroeb.net>
Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Joel Teichroeb 8a0fc8d19d stash: convert apply to builtin
Add a builtin helper for performing stash commands. Converting
all at once proved hard to review, so starting with just apply
lets conversion get started without the other commands being
finished.

The helper is being implemented as a drop in replacement for
stash so that when it is complete it can simply be renamed and
the shell script deleted.

Delete the contents of the apply_stash shell function and replace
it with a call to stash--helper apply until pop is also
converted.

Signed-off-by: Joel Teichroeb <joel@teichroeb.net>
Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:41:40 +09:00
Alban Gruin ed35d18841 rebase--interactive: move transform_todo_file()
As transform_todo_file() is only needed inside of
rebase--interactive.c for `rebase -p', it is moved there from
sequencer.c.

The parameter r (repository) is dropped along the way.

Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:17:57 +09:00
Alban Gruin a930eb03a8 rebase-interactive: rewrite edit_todo_list() to handle the initial edit
edit_todo_list() is changed to work on a todo_list, and to handle the
initial edition of the todo list (ie. making a backup of the todo
list).

It does not check for dropped commits yet, as todo_list_check() does not
take the commits that have already been processed by the rebase (ie. the
todo list is edited in the middle of a rebase session).

Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:17:57 +09:00
Alban Gruin 79d7e883bb rebase--interactive: move rearrange_squash_in_todo_file()
As rearrange_squash_in_todo_file() is only needed inside of
rebase--interactive.c for `rebase -p', it is moved there from
sequencer.c.

The parameter r (repository) is dropped along the way, and the error
handling is slightly improved.

Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:17:57 +09:00
Alban Gruin 1ba204de69 rebase--interactive: move sequencer_add_exec_commands()
As sequencer_add_exec_commands() is only needed inside of
rebase--interactive.c for `rebase -p', it is moved there from
sequencer.c.

The parameter r (repository) is dropped along the way.

Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:17:57 +09:00
Alban Gruin 94bcad7979 sequencer: change complete_action() to use the refactored functions
complete_action() used functions that read the todo-list file, made some
changes to it, and wrote it back to the disk.

The previous commits were dedicated to separate the part that deals with
the file from the actual logic of these functions.  Now that this is
done, we can call directly the "logic" functions to avoid useless file
access.

The parsing of the list has to be done by the caller.  If the buffer of
the todo list provided by the caller is empty, a `noop' command is
directly added to the todo list, without touching the buffer.

Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:17:57 +09:00
Alban Gruin d358fc286d sequencer: make sequencer_make_script() write its script to a strbuf
This makes sequencer_make_script() write its script to a strbuf (ie. the
buffer of a todo_list) instead of a FILE.  This reduce the amount of
read/write made by rebase interactive.

Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-07 09:17:57 +09:00