Commit Graph

7877 Commits

Author SHA1 Message Date
7fab474656 Merge branch 'cc/delta-islands'
A few issues in the implementation of "delta-islands" feature has
been corrected.

* cc/delta-islands:
  pack-objects: fix off-by-one in delta-island tree-depth computation
  pack-objects: zero-initialize tree_depth/layer arrays
  pack-objects: fix tree_depth and layer invariants
2018-11-21 20:39:02 +09:00
c17f086eca Merge branch 'js/builtin-rebase-perf-fix-err-fix'
The object name of the tree reported in a recently added error
message was wrong, which has been corrected.

* js/builtin-rebase-perf-fix-err-fix:
  rebase: warn about the correct tree's OID
2018-11-21 20:39:01 +09:00
3949053617 pack-objects: fix off-by-one in delta-island tree-depth computation
When delta-islands are in use, we need to record the deepest path at
which we find each tree and blob. Our loop to do so counts slashes, so
"foo" is depth 0, "foo/bar" is depth 1, and so on.

However, this neglects root trees, which are represented by the empty
string. Those also have depth 0, but are at a layer above "foo". Thus,
"foo" should be 1, "foo/bar" at 2, and so on. We use this depth to
topo-sort the trees in resolve_tree_islands(). As a result, we may fail
to visit a root tree before the sub-trees it contains, and therefore not
correctly pass down the island marks.

That in turn could lead to missing some delta opportunities (objects are
in the same island, but we didn't realize it) or creating unwanted
cross-island deltas (one object is in an island another isn't, but we
don't realize). In practice, it seems to have only a small effect.  Some
experiments on the real-world git/git fork network at GitHub showed an
improvement of only 0.14% in the resulting clone size.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-21 13:50:28 +09:00
4d86503eed rebase: warn about the correct tree's OID
This was a simple copy/paste error, and an obvious one at that: if we
cannot fill the tree descriptor, we should show an error message about
*that* tree, not another one.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-21 13:48:11 +09:00
f5f0f68d61 Merge branch 'tb/print-size-t-with-uintmax-format'
Code preparation to replace ulong vars with size_t vars where
appropriate.

* tb/print-size-t-with-uintmax-format:
  Upcast size_t variables to uintmax_t when printing
2018-11-19 16:24:41 +09:00
dc7accd755 Merge branch 'nd/format-patch-cover-letter-stat-width'
"git format-patch --stat=<width>" can be used to specify the width
used by the diffstat (shown in the cover letter).

* nd/format-patch-cover-letter-stat-width:
  format-patch: respect --stat in cover letter's diffstat
2018-11-19 16:24:40 +09:00
137399934d Merge branch 'ds/push-squelch-ambig-warning'
"git push" used to check ambiguities between object-names and
refnames while processing the list of refs' old and new values,
which was unnecessary (as it knew that it is feeding raw object
names).  This has been optimized out.

* ds/push-squelch-ambig-warning:
  pack-objects: ignore ambiguous object warnings
2018-11-19 16:24:40 +09:00
67022e0214 tree-walk.c: make tree_entry_interesting() take an index
In order to support :(attr) when matching pathspec on a tree,
tree_entry_interesting() needs to take an index (because
git_check_attr() needs it). This is the preparation step for it. This
also makes it clearer what index we fall back to when looking up
attributes during an unpack-trees operation: the source index.

This also fixes revs->pruning.repo initialization that should have
been done in 2abf350385 (revision.c: remove implicit dependency on
the_index - 2018-09-21). Without it, skip_uninteresting() will
dereference a NULL pointer through this call chain

  get_revision(revs)
  get_revision_internal
  get_revision_1
  try_to_simplify_commit
  rev_compare_tree
  diff_tree_oid(..., &revs->pruning)
  ll_diff_tree_oid
  diff_tree_paths
  ll_diff_tree
  skip_uninteresting

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-19 10:50:33 +09:00
e092073d64 tree.c: make read_tree*() take 'struct repository *'
These functions call tree_entry_interesting() which will soon require
a 'struct index_state *' to be passed in. Instead of just changing the
function signature to take an index, update to take a repo instead
because these functions do need object database access.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-19 10:50:33 +09:00
4520c23374 Merge branch 'ab/rebase-in-c-escape-hatch'
The recently merged "rebase in C" has an escape hatch to use the
scripted version when necessary, but it hasn't been documented,
which has been corrected.

* ab/rebase-in-c-escape-hatch:
  tests: add a special setup where rebase.useBuiltin is off
  rebase doc: document rebase.useBuiltin
2018-11-18 18:23:59 +09:00
137c1f2f51 Merge branch 'js/rebase-am-options'
The way "git rebase" parses and forwards the command line options
meant for underlying "git am" has been revamped, which fixed for
options with parameters that were not passed correctly.

* js/rebase-am-options:
  rebase: validate -C<n> and --whitespace=<mode> parameters early
  rebase: really just passthru the `git am` options
2018-11-18 18:23:59 +09:00
e14af5f7aa Merge branch 'cb/notes-freeing-always-null-fix'
Code cleanup.

* cb/notes-freeing-always-null-fix:
  builtin/notes: remove unnecessary free
2018-11-18 18:23:57 +09:00
0de3a73eb6 Merge branch 'js/rebase-r-and-merge-head'
Bugfix for the recently graduated "git rebase --rebase-merges".

* js/rebase-r-and-merge-head:
  status: rebase and merge can be in progress at the same time
  built-in rebase --skip/--abort: clean up stale .git/<name> files
  rebase -i: include MERGE_HEAD into files to clean up
  rebase -r: do not write MERGE_HEAD unless needed
  rebase -r: demonstrate bug with conflicting merges
2018-11-18 18:23:56 +09:00
bb6dd0ecad Merge branch 'js/builtin-rebase-perf-fix'
Code clean-up with correction to make the reimplemented "git
rebase" a more faithful rewrite of the original, which also regains
performance.

* js/builtin-rebase-perf-fix:
  built-in rebase: reinstate `checkout -q` behavior where appropriate
  rebase: prepare reset_head() for more flags
  rebase: consolidate clean-up code before leaving reset_head()
2018-11-18 18:23:55 +09:00
9aefd35380 Merge branch 'js/rebase-autostash-detach-fix'
"git rebase --autostash" did not correctly re-attach the HEAD at times.

* js/rebase-autostash-detach-fix:
  built-in rebase --autostash: leave the current branch alone if possible
  built-in rebase: demonstrate regression with --autostash
2018-11-18 18:23:55 +09:00
6d2035ee60 Merge branch 'jk/verify-sig-merge-into-void'
"git merge" and "git pull" that merges into an unborn branch used
to completely ignore "--verify-signatures", which has been
corrected.

* jk/verify-sig-merge-into-void:
  pull: handle --verify-signatures for unborn branch
  merge: handle --verify-signatures for unborn branch
  merge: extract verify_merge_signature() helper
2018-11-18 18:23:54 +09:00
ab96f28ba4 Merge branch 'jk/unused-parameter-fixes'
Various functions have been audited for "-Wunused-parameter" warnings
and bugs in them got fixed.

* jk/unused-parameter-fixes:
  midx: double-check large object write loop
  assert NOARG/NONEG behavior of parse-options callbacks
  parse-options: drop OPT_DATE()
  apply: return -1 from option callback instead of calling exit(1)
  cat-file: report an error on multiple --batch options
  tag: mark "--message" option with NONEG
  show-branch: mark --reflog option as NONEG
  format-patch: mark "--no-numbered" option with NONEG
  status: mark --find-renames option with NONEG
  cat-file: mark batch options with NONEG
  pack-objects: mark index-version option as NONEG
  ls-files: mark exclude options as NONEG
  am: handle --no-patch-format option
  apply: mark include/exclude options as NONEG
2018-11-18 18:23:53 +09:00
26b80a841a Merge branch 'nd/pthreads'
The codebase has been cleaned up to reduce "#ifndef NO_PTHREADS".

* nd/pthreads:
  Clean up pthread_create() error handling
  read-cache.c: initialize copy_len to shut up gcc 8
  read-cache.c: reduce branching based on HAVE_THREADS
  read-cache.c: remove #ifdef NO_PTHREADS
  pack-objects: remove #ifdef NO_PTHREADS
  preload-index.c: remove #ifdef NO_PTHREADS
  grep: clean up num_threads handling
  grep: remove #ifdef NO_PTHREADS
  attr.c: remove #ifdef NO_PTHREADS
  name-hash.c: remove #ifdef NO_PTHREADS
  index-pack: remove #ifdef NO_PTHREADS
  send-pack.c: move async's #ifdef NO_PTHREADS back to run-command.c
  run-command.h: include thread-utils.h instead of pthread.h
  thread-utils: macros to unconditionally compile pthreads API
2018-11-18 18:23:52 +09:00
a965bb3116 fast-export: add a --show-original-ids option to show original names
Knowing the original names (hashes) of commits can sometimes enable
post-filtering that would otherwise be difficult or impossible.  In
particular, the desire to rewrite commit messages which refer to other
prior commits (on top of whatever other filtering is being done) is
very difficult without knowing the original names of each commit.

In addition, knowing the original names (hashes) of blobs can allow
filtering by blob-id without requiring re-hashing the content of the
blob, and is thus useful as a small optimization.

Once we add original ids for both commits and blobs, we may as well
add them for tags too for completeness.  Perhaps someone will have a
use for them.

This commit teaches a new --show-original-ids option to fast-export
which will make it add a 'original-oid <hash>' line to blob, commits,
and tags.  It also teaches fast-import to parse (and ignore) such
lines.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-17 18:43:52 +09:00
530ca19c02 fast-export: add --reference-excluded-parents option
git filter-branch has a nifty feature allowing you to rewrite, e.g. just
the last 8 commits of a linear history
  git filter-branch $OPTIONS HEAD~8..HEAD

If you try the same with git fast-export, you instead get a history of
only 8 commits, with HEAD~7 being rewritten into a root commit.  There
are two alternatives:

  1) Don't use the negative revision specification, and when you're
     filtering the output to make modifications to the last 8 commits,
     just be careful to not modify any earlier commits somehow.

  2) First run 'git fast-export --export-marks=somefile HEAD~8', then
     run 'git fast-export --import-marks=somefile HEAD~8..HEAD'.

Both are more error prone than I'd like (the first for obvious reasons;
with the second option I have sometimes accidentally included too many
revisions in the first command and then found that the corresponding
extra revisions were not exported by the second command and thus were
not modified as I expected).  Also, both are poor from a performance
perspective.

Add a new --reference-excluded-parents option which will cause
fast-export to refer to commits outside the specified rev-list-args
range by their sha1sum.  Such a stream will only be useful in a
repository which already contains the necessary commits (much like the
restriction imposed when using --no-data).

Note from Peff:
  I think we might be able to do a little more optimization here. If
  we're exporting HEAD^..HEAD and there's an object in HEAD^ which is
  unchanged in HEAD, I think we'd still print it (because it would not
  be marked SHOWN), but we could omit it (by walking the tree of the
  boundary commits and marking them shown).  I don't think it's a
  blocker for what you're doing here, but just a possible future
  optimization.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-17 18:43:52 +09:00
fdf31b6369 fast-export: ensure we export requested refs
If file paths are specified to fast-export and a ref points to a commit
that does not touch any of the relevant paths, then that ref would
sometimes fail to be exported.  (This depends on whether any ancestors
of the commit which do touch the relevant paths would be exported with
that same ref name or a different ref name.)  To avoid this problem,
put *all* specified refs into extra_refs to start, and then as we export
each commit, remove the refname used in the 'commit $REFNAME' directive
from extra_refs.  Then, in handle_tags_and_duplicates() we know which
refs actually do need a manual reset directive in order to be included.

This means that we do need some special handling for excluded refs; e.g.
if someone runs
   git fast-export ^master master
then they've asked for master to be exported, but they have also asked
for the commit which master points to and all of its history to be
excluded.  That logically means ref deletion.  Previously, such refs
were just silently omitted from being exported despite having been
explicitly requested for export.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-17 18:43:52 +09:00
cd13762d8f fast-export: when using paths, avoid corrupt stream with non-existent mark
If file paths are specified to fast-export and multiple refs point to a
commit that does not touch any of the relevant file paths, then
fast-export can hit problems.  fast-export has a list of additional refs
that it needs to explicitly set after exporting all blobs and commits,
and when it tries to get_object_mark() on the relevant commit, it can
get a mark of 0, i.e. "not found", because the commit in question did
not touch the relevant paths and thus was not exported.  Trying to
import a stream with a mark corresponding to an unexported object will
cause fast-import to crash.

Avoid this problem by taking the commit the ref points to and finding an
ancestor of it that was exported, and make the ref point to that commit
instead.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-17 18:43:51 +09:00
f129c4275c fast-export: move commit rewriting logic into a function for reuse
Logic to replace a filtered commit with an unfiltered ancestor is useful
elsewhere; put it into a function we can call.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-17 18:43:51 +09:00
1f30c904b3 fast-export: avoid dying when filtering by paths and old tags exist
If --tag-of-filtered-object=rewrite is specified along with a set of
paths to limit what is exported, then any tags pointing to old commits
that do not contain any of those specified paths cause problems.  Since
the old tagged commit is not exported, fast-export attempts to rewrite
such tags to an ancestor commit which was exported.  If no such commit
exists, then fast-export currently die()s.  Five years after the tag
rewriting logic was added to fast-export (see commit 2d8ad46919,
"fast-export: Add a --tag-of-filtered-object  option for newly dangling
tags", 2009-06-25), fast-import gained the ability to delete refs (see
commit 4ee1b225b9, "fast-import: add support to delete refs",
2014-04-20), so now we do have a valid option to rewrite the tag to.
Delete these tags instead of dying.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-17 18:43:51 +09:00
b93b81e799 fast-export: use value from correct enum
ABORT and ERROR happen to have the same value, but come from differnt
enums.  Use the one from the correct enum, and while at it, rename the
values to avoid such problems.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-17 18:43:51 +09:00
843b9e6d48 fast-export: convert sha1 to oid
Rename anonymize_sha1() to anonymize_oid(() and change its signature,
and switch from sha1_to_hex() to oid_to_hex() and from GIT_SHA1_RAWSZ to
the_hash_algo->rawsz.  Also change a comment and a die string to mention
oid instead of sha1.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-17 18:43:50 +09:00
62c23938fa tests: add a special setup where rebase.useBuiltin is off
Add a GIT_TEST_REBASE_USE_BUILTIN=false test mode which is equivalent
to running with rebase.useBuiltin=false. This is needed to spot that
we're not introducing any regressions in the legacy rebase version
while we're carrying both it and the new builtin version.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-16 19:02:54 +09:00
515be83382 clone: respect additional configured fetch refspecs during initial fetch
The initial fetch during a clone doesn't transfer refs matching
additional fetch refspecs given on the command line as configuration
variables, e.g. '-c remote.origin.fetch=<refspec>'.  This contradicts
the documentation stating that configuration variables specified via
'git clone -c <key>=<value> ...' "take effect immediately after the
repository is initialized, but before the remote history is fetched"
and the given example specifically mentions "adding additional fetch
refspecs to the origin remote".  Furthermore, one-shot configuration
variables specified via 'git -c <key>=<value> clone ...', though not
written to the newly created repository's config file, live during the
lifetime of the 'clone' command, including the initial fetch.  All
this implies that any fetch refspecs specified this way should already
be taken into account during the initial fetch.

The reason for this is that the initial fetch is not a fully fledged
'git fetch' but a bunch of direct calls into the fetch/transport
machinery with clone's own refs-to-refspec matching logic, which
bypasses parts of 'git fetch' processing configured fetch refspecs.
This logic only considers a single default refspec, potentially
influenced by options like '--single-branch' and '--mirror'.  The
configured refspecs are, however, already read and parsed properly
when clone calls remote.c:remote_get(), but it never looks at the
parsed refspecs in the resulting 'struct remote'.

Modify clone to take the remote's configured fetch refspecs into
account to retrieve all matching refs during the initial fetch.  Note
that we have to explicitly add the default fetch refspec to the
remote's refspecs, because at that point the remote only includes the
fetch refspecs specified on the command line.

Add tests to check that refspecs given both via 'git clone -c ...' and
'git -c ... clone' retrieve all refs matching either the default or
the additional refspecs, and that it works even when the user
specifies an alternative remote name via '--origin=<name>'.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-16 13:15:17 +09:00
3e42cb3b67 clone: use a more appropriate variable name for the default refspec
cmd_clone() declares two strbufs 'key' and 'value' on the same line,
suggesting that they are used to contruct a config variable's name and
value.  However, this is not the case: 'key' is used to construct the
names of multiple config variables, while 'value' is never used as a
value for any of those config variables, or for any other config
variable for that matter, but only to contruct the default fetch
refspec.

Let's rename 'value' to 'default_refspec' to make the intent clearer.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-16 13:15:14 +09:00
04519d7201 rebase: validate -C<n> and --whitespace=<mode> parameters early
It is a good idea to error out early upon seeing, say, `-Cbad`, rather
than starting the rebase only to have the `--am` backend complain later.

Let's do this.

The only options accepting parameters which we pass through to `git am`
(which may, or may not, forward them to `git apply`) are `-C` and
`--whitespace`. The other options we pass through do not accept
parameters, so we do not have to validate them here.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-16 11:52:13 +09:00
f57696802c rebase: really just passthru the git am options
Currently, we parse the options intended for `git am` as if we wanted to
handle them in `git rebase`, and then reconstruct them painstakingly to
define the `git_am_opt` variable.

However, there is a much better way (that I was unaware of, at the time
when I mentored Pratik to implement these options): OPT_PASSTHRU_ARGV.
It is intended for exactly this use case, where command-line options
want to be parsed into a separate `argv_array`.

Let's use this feature.

Incidentally, this also allows us to address a bug discovered by Phillip
Wood, where the built-in rebase failed to understand that the `-C`
option takes an optional argument.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-16 11:52:13 +09:00
8247166717 push: change needlessly ambiguous example in error
Change an example push added in b55e677522 ("push: introduce new
push.default mode "simple"", 2012-04-24) to always mean the same thing
whether the current setting happens to be "simple" or not.

This error is only emitted under "simple", but message is explaining
to the user that they can get two sorts of different behaviors by
these two invocations.

Let's use "git push <remote> HEAD" which always means push the current
branch name to that remote, instead of "git push <remote>
<current-branch-name>" which will do that under "simple", but is not
guaranteed to do under "upstream".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-14 17:17:09 +09:00
0f086e6dca checkout: print something when checking out paths
One of the problems with "git checkout" is that it does so many
different things and could confuse people specially when we fail to
handle ambiguation correctly.

One way to help with that is tell the user what sort of operation is
actually carried out. When switching branches, we always print
something unless --quiet, either

 - "HEAD is now at ..."
 - "Reset branch ..."
 - "Already on ..."
 - "Switched to and reset ..."
 - "Switched to a new branch ..."
 - "Switched to branch ..."

Checking out paths however is silent. Print something so that if we
got the user intention wrong, they won't waste too much time to find
that out. For the remaining cases of checkout we now print either

 - "Checked out ... paths out of the index"
 - "Checked out ... paths out of <abbrev hash>"

Since the purpose of printing this is to help disambiguate. Only do it
when "--" is missing.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-14 15:10:35 +09:00
be4908f103 checkout: disambiguate dwim tracking branches and local files
When checkout dwim is added in [1], it is restricted to only dwim when
certain conditions are met and fall back to default checkout behavior
otherwise. It turns out falling back could be confusing. One of the
conditions to turn

    git checkout frotz

to

    git checkout -b frotz origin/frotz

is that frotz must not exist as a file. But when the user comes to
expect "git checkout frotz" to create the branch "frotz" and there
happens to be a file named "frotz", git's silently reverting "frotz"
file content is not helping. This is reported in Git mailing list [2]
and even used as an example of "Git is bad" elsewhere [3].

We normally try to do the right thing, but when there are multiple
"right things" to do, it's best to leave it to the user to decide.
Check this case, ask the user to to disambiguate:

- "git checkout -- foo" will check out path "foo"
- "git checkout foo --" will dwim and create branch "foo" [4]

For users who do not want dwim, use --no-guess. It's useless in this
particular case because "git checkout --no-guess foo --" will just
fail. But it could be used by scripts.

[1] 70c9ac2f19 (DWIM "git checkout frotz" to "git checkout -b frotz
    origin/frotz" - 2009-10-18)
[2] https://public-inbox.org/git/CACsJy8B2TVr1g+k+eSQ=pBEO3WN4_LtgLo9gpur8X7Z9GOFL_A@mail.gmail.com/
[3] https://news.ycombinator.com/item?id=18230655
[4] a047fafc78 (checkout: allow dwim for branch creation for "git
    checkout $branch --" - 2013-10-18)

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-14 15:02:24 +09:00
9235a6ce47 Merge branch 'bp/add-diff-files-optim'
"git add" needs to internally run "diff-files" equivalent, and the
codepath learned the same optimization as "diff-files" has to run
lstat(2) in parallel to find which paths have been updated in the
working tree.

* bp/add-diff-files-optim:
  add: speed up cmd_add() by utilizing read_cache_preload()
2018-11-13 22:37:27 +09:00
39d23dfa40 Merge branch 'jk/xdiff-interface'
The interface into "xdiff" library used to discover the offset and
size of a generated patch hunk by first formatting it into the
textual hunk header "@@ -n,m +k,l @@" and then parsing the numbers
out.  A new interface has been introduced to allow callers a more
direct access to them.

* jk/xdiff-interface:
  xdiff-interface: drop parse_hunk_header()
  range-diff: use a hunk callback
  diff: convert --check to use a hunk callback
  combine-diff: use an xdiff hunk callback
  diff: use hunk callback for word-diff
  diff: discard hunk headers for patch-ids earlier
  diff: avoid generating unused hunk header lines
  xdiff-interface: provide a separate consume callback for hunks
  xdiff: provide a separate emit callback for hunks
2018-11-13 22:37:27 +09:00
e146cc97be Merge branch 'nd/per-worktree-ref-iteration'
The code to traverse objects for reachability, used to decide what
objects are unreferenced and expendable, have been taught to also
consider per-worktree refs of other worktrees as starting points to
prevent data loss.

* nd/per-worktree-ref-iteration:
  git-worktree.txt: correct linkgit command name
  reflog expire: cover reflog from all worktrees
  fsck: check HEAD and reflog from other worktrees
  fsck: move fsck_head_link() to get_default_heads() to avoid some globals
  revision.c: better error reporting on ref from different worktrees
  revision.c: correct a parameter name
  refs: new ref types to make per-worktree refs visible to all worktrees
  Add a place for (not) sharing stuff between worktrees
  refs.c: indent with tabs, not spaces
2018-11-13 22:37:26 +09:00
11aa560de9 Merge branch 'bp/refresh-index-using-preload'
The helper function to refresh the cached stat information in the
in-core index has learned to perform the lstat() part of the
operation in parallel on multi-core platforms.

* bp/refresh-index-using-preload:
  refresh_index: remove unnecessary calls to preload_index()
  speed up refresh_index() by utilizing preload_index()
2018-11-13 22:37:26 +09:00
6b2a52431b Merge branch 'pw/am-rebase-read-author-script'
Unify code to read the author-script used in "git am" and the
commands that use the sequencer machinery, e.g. "git rebase -i".

* pw/am-rebase-read-author-script:
  sequencer: use read_author_script()
  add read_author_script() to libgit
  am: rename read_author_script()
  am: improve author-script error reporting
  am: don't die in read_author_script()
2018-11-13 22:37:23 +09:00
fd4bb3806b Merge branch 'jc/war-on-string-list'
Replace three string-list instances used as look-up tables in "git
fetch" with hashmaps.

* jc/war-on-string-list:
  fetch: replace string-list used as a look-up table with a hashmap
2018-11-13 22:37:23 +09:00
20d04b4419 Merge branch 'ag/rev-parse-all-exclude-fix'
"git rev-parse --exclude=* --branches --branches"  (i.e. first
saying "add only things that do not match '*' out of all branches"
and then adding all branches, without any exclusion this time")
worked as expected, but "--exclude=* --all --all" did not work the
same way, which has been fixed.

* ag/rev-parse-all-exclude-fix:
  rev-parse: clear --exclude list after 'git rev-parse --all'
2018-11-13 22:37:23 +09:00
abb4824d13 Merge branch 'ao/submodule-wo-gitmodules-checked-out'
The submodule support has been updated to read from the blob at
HEAD:.gitmodules when the .gitmodules file is missing from the
working tree.

* ao/submodule-wo-gitmodules-checked-out:
  t/helper: add test-submodule-nested-repo-config
  submodule: support reading .gitmodules when it's not in the working tree
  submodule: add a helper to check if it is safe to write to .gitmodules
  t7506: clean up .gitmodules properly before setting up new scenario
  submodule: use the 'submodule--helper config' command
  submodule--helper: add a new 'config' subcommand
  t7411: be nicer to future tests and really clean things up
  t7411: merge tests 5 and 6
  submodule: factor out a config_set_in_gitmodules_file_gently function
  submodule: add a print_config_from_gitmodules() helper
2018-11-13 22:37:22 +09:00
504bdc5994 Merge branch 'nb/worktree-api-doc'
Code readability fix.

* nb/worktree-api-doc:
  worktree: rename is_worktree_locked to worktree_lock_reason
  worktree: update documentation for lock_reason and lock_reason_valid
2018-11-13 22:37:21 +09:00
5fb9263295 Merge branch 'ds/test-multi-pack-index'
Tests for the recently introduced multi-pack index machinery.

* ds/test-multi-pack-index:
  packfile: close multi-pack-index in close_all_packs
  multi-pack-index: define GIT_TEST_MULTI_PACK_INDEX
  midx: close multi-pack-index on repack
  midx: fix broken free() in close_midx()
2018-11-13 22:37:19 +09:00
8c758f9a67 Merge branch 'nd/per-worktree-config'
A fourth class of configuration files (in addition to the
traditional "system wide", "per user in the $HOME directory" and
"per repository in the $GIT_DIR/config") has been introduced so
that different worktrees that share the same repository (hence the
same $GIT_DIR/config file) can use different customization.

* nd/per-worktree-config:
  worktree: add per-worktree config files
  t1300: extract and use test_cmp_config()
2018-11-13 22:37:18 +09:00
81c365bbd1 Merge branch 'jk/proto-v2-ref-prefix-fix'
"git ls-remote $there foo" was broken by recent update for the
protocol v2 and stopped showing refs that match 'foo' that are not
refs/{heads,tags}/foo, which has been fixed.

* jk/proto-v2-ref-prefix-fix:
  ls-remote: pass heads/tags prefixes to transport
  ls-remote: do not send ref prefixes for patterns
2018-11-13 22:37:17 +09:00
879a8d4bf2 Merge branch 'jk/detect-truncated-zlib-input'
A regression in Git 2.12 era made "git fsck" fall into an infinite
loop while processing truncated loose objects.

* jk/detect-truncated-zlib-input:
  cat-file: handle streaming failures consistently
  check_stream_sha1(): handle input underflow
  t1450: check large blob in trailing-garbage test
2018-11-13 22:37:17 +09:00
fd7761a1cd Merge branch 'nd/config-split'
Split the overly large Documentation/config.txt file into million
little pieces.  This potentially allows each individual piece
included into the manual page of the command it affects more easily.

* nd/config-split: (81 commits)
  config.txt: remove config/dummy.txt
  config.txt: move worktree.* to a separate file
  config.txt: move web.* to a separate file
  config.txt: move versionsort.* to a separate file
  config.txt: move user.* to a separate file
  config.txt: move url.* to a separate file
  config.txt: move uploadpack.* to a separate file
  config.txt: move uploadarchive.* to a separate file
  config.txt: move transfer.* to a separate file
  config.txt: move tag.* to a separate file
  config.txt: move submodule.* to a separate file
  config.txt: move stash.* to a separate file
  config.txt: move status.* to a separate file
  config.txt: move splitIndex.* to a separate file
  config.txt: move showBranch.* to a separate file
  config.txt: move sequencer.* to a separate file
  config.txt: move sendemail-config.txt to config/
  config.txt: move reset.* to a separate file
  config.txt: move rerere.* to a separate file
  config.txt: move repack.* to a separate file
  ...
2018-11-13 22:37:16 +09:00
284aeb7e60 format-patch: respect --stat in cover letter's diffstat
Commit 43662b23ab (format-patch: keep cover-letter diffstat wrapped in
72 columns - 2018-01-24) uncondtionally sets stat width to 72 when
generating diffstat for the cover letter, ignoring --stat from command
line. But it should only do so when stat width is still default
(i.e. stat_width == 0).

In order to fix this, we should only set stat_width if stat_width is
zero. But it will never be. Commit 071dd0ba43 (format-patch: reduce
patch diffstat width to 72 - 2018-02-01) makes sure that default stat
width will be 72 (ignoring $COLUMNS, but could still be overriden by
--stat). So all we need to do here is drop the assignment.

Reported-by: Laszlo Ersek <lersek@redhat.com>
Helped-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-13 15:08:15 +09:00
bac2a1e36f built-in rebase: reinstate checkout -q behavior where appropriate
When we converted a `git checkout -q $onto^0` call to use
`reset_head()`, we inadvertently incurred a change from a twoway_merge
to a oneway_merge, as if we wanted a `git reset --hard` instead.

This has performance ramifications under certain, though, as the
oneway_merge needs to lstat() every single index entry whereas
twoway_merge does not.

So let's go back to the old behavior.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-13 15:05:02 +09:00