"git rebase --stat" to transplant a piece of history onto a totally
unrelated history were not working before and silently showed wrong
result. With the recent reimplementation in C, it started to instead
die with an error message, as the original logic was not prepared
to cope with this case. This has now been fixed.
* js/rebase-stat-unrelated-fix:
rebase --stat: fix when rebasing to an unrelated history
"git rebase" reimplemented recently in C accidentally changed the
way reflog entries are recorded (earlier "rebase -i" identified the
entries it leaves with "rebase -i", but the new version always
marks them with "rebase"). This has been corrected.
"git format-patch --range-diff" by mistake passed the diff options
used to generate the primary output of the command to the
range-diff machinery, which caused the range-diff in the cover
letter to include fairly useless "--stat" output. This has been
corrected by forcing a non-customizable default formatting options
on the range-diff machinery when driven by format-patch.
* jc/format-patch-range-diff-fix:
format-patch: do not let its diff-options affect --range-diff
rebase --stat: fix when rebasing to an unrelated history
When rebasing to a commit history that has no common commits with the
current branch, there is no merge base. In diffstat mode, this means
that we cannot compare to the merge base, but we have to compare to the
empty tree instead.
Also, if running in verbose diffstat mode, we should not output
Changes from <merge-base> to <onto>
as that does not make sense without any merge base.
Note: neither scripted nor built-in versoin of `git rebase` were
prepared for this situation well. We use this opportunity not only to
fix the bug(s), but also to make both versions' output consistent in
this instance. And add a regression test to keep this working in all
eternity.
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The scripted version of "rebase" honored the `GIT_REFLOG_ACTION`,
and some automation scripts expected the reflog entries to be
prefixed with "rebase -i", not "rebase", after running "rebase -i".
This regressed in the reimplementation in C.
Fix that, and add a regression test, both with `GIT_REFLOG_ACTION`
set and unset.
Note: the reflog message for "rebase finished" did *not* honor
GIT_REFLOG_ACTION, and as we are very late in the v2.20.0-rcN phase,
we leave that bug for later (as it seems that that bug has been with
us from the very beginning).
Reported by Ian Jackson.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
format-patch: do not let its diff-options affect --range-diff
Stop leaking how the primary output of format-patch is customized to
the range-diff machinery and instead let the latter use its own
"reasonable default", in order to correct the breakage introduced by a5170794 ("Merge branch 'ab/range-diff-no-patch'", 2018-11-18) on
the 'master' front. "git format-patch --range-diff..." without any
weird diff option started to include the "range-diff --stat" output,
which is rather useless right now, that made the whole thing
unusable and this is probably the least disruptive way to whip the
codebase into a shippable shape.
We may want to later make the range-diff driven by format-patch more
configurable, but that would have to wait until we have a good
design.
The code recently added to "git clone" to see if the platform's
filesystem is adequate to check out and use the project code
correctly (e.g. a case smashing filesystem cannot be used for a
project with two files whose paths are different only in case) was
meant to help Windows users, but the test for it was not enabled
for that platform, which has been corrected.
* tb/clone-case-smashing-warning-test:
t5601-99: Enable colliding file detection for MINGW
t5601-99: Enable colliding file detection for MINGW
Commit b878579ae7 (clone: report duplicate entries on case-insensitive
filesystems - 2018-08-17) adds a warning to user when cloning a repo
with case-sensitive file names on a case-insensitive file system.
This test has never been enabled for MINGW.
It had been working since day 1, but I forget to report that to the
author.
Enable it after a re-test.
Signed-off-by: Torsten Bögershausen <tboegi@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ma/commit-graph-docs:
Doc: refer to the "commit-graph file" with dash
git-commit-graph.txt: refer to "*commit*-graph file"
git-commit-graph.txt: typeset more in monospace
git-commit-graph.txt: fix bullet lists
* fe/doc-updates:
git-describe.1: clarify that "human readable" is also git-readable
git-column.1: clarify initial description, provide examples
git-archimport.1: specify what kind of Arch we're talking about
Merge branch 'md/exclude-promisor-objects-fix' into maint
Operations on promisor objects make sense in the context of only a
small subset of the commands that internally use the revisions
machinery, but the "--exclude-promisor-objects" option were taken
and led to nonsense results by commands like "log", to which it
didn't make much sense. This has been corrected.
* md/exclude-promisor-objects-fix:
exclude-promisor-objects: declare when option is allowed
Documentation/git-log.txt: do not show --exclude-promisor-objects
Merge branch 'js/shallow-and-fetch-prune' into maint
"git repack" in a shallow clone did not correctly update the
shallow points in the repository, leading to a repository that
does not pass fsck.
* js/shallow-and-fetch-prune:
repack -ad: prune the list of shallow commits
shallow: offer to prune only non-existing entries
repack: point out a bug handling stale shallow info
Merge branch 'jc/receive-deny-current-branch-fix' into maint
The receive.denyCurrentBranch=updateInstead codepath kicked in even
when the push should have been rejected due to other reasons, such
as it does not fast-forward or the update-hook rejects it, which
has been corrected.
* jc/receive-deny-current-branch-fix:
receive: denyCurrentBranch=updateinstead should not blindly update
Merge branch 'js/diff-notice-has-drive-prefix' into maint
Under certain circumstances, "git diff D:/a/b/c D:/a/b/d" on
Windows would strip initial parts from the paths because they
were not recognized as absolute, which has been corrected.
* js/diff-notice-has-drive-prefix:
diff: don't attempt to strip prefix from absolute Windows paths
Merge branch 'np/log-graph-octopus-fix' into maint
"git log --graph" showing an octopus merge sometimes miscounted the
number of display columns it is consuming to show the merge and its
parent commits, which has been corrected.
* np/log-graph-octopus-fix:
log: fix coloring of certain octopus merge shapes
The codepath to support the experimental split-index mode had
remaining "racily clean" issues fixed.
* sg/split-index-racefix:
split-index: BUG() when cache entry refers to non-existing shared entry
split-index: smudge and add racily clean cache entries to split index
split-index: don't compare cached data of entries already marked for split index
split-index: count the number of deleted entries
t1700-split-index: date back files to avoid racy situations
split-index: add tests to demonstrate the racy split index problem
t1700-split-index: document why FSMONITOR is disabled in this test script
A partial clone that is configured to lazily fetch missing objects
will on-demand issue a "git fetch" request to the originating
repository to fill not-yet-obtained objects. The request has been
optimized for requesting a tree object (and not the leaf blob
objects contained in it) by telling the originating repository that
no blobs are needed.
* jt/non-blob-lazy-fetch:
fetch-pack: exclude blobs when lazy-fetching trees
fetch-pack: avoid object flags if no_dependents
Merge branch 'en/status-multiple-renames-to-the-same-target-fix' into maint
The code in "git status" sometimes hit an assertion failure. This
was caused by a structure that was reused without cleaning the data
used for the first run, which has been corrected.
* en/status-multiple-renames-to-the-same-target-fix:
commit: fix erroneous BUG, 'multiple renames on the same target? how?'
Merge branch 'ds/commit-graph-with-grafts' into maint
The recently introduced commit-graph auxiliary data is incompatible
with mechanisms such as replace & grafts that "breaks" immutable
nature of the object reference relationship. Disable optimizations
based on its use (and updating existing commit-graph) when these
incompatible features are in use in the repository.
* ds/commit-graph-with-grafts:
commit-graph: close_commit_graph before shallow walk
commit-graph: not compatible with uninitialized repo
commit-graph: not compatible with grafts
commit-graph: not compatible with replace objects
test-repository: properly init repo
commit-graph: update design document
refs.c: upgrade for_each_replace_ref to be a each_repo_ref_fn callback
refs.c: migrate internal ref iteration to pass thru repository argument
"git add ':(attr:foo)'" is not supported and is supposed to be
rejected while the command line arguments are parsed, but we fail
to reject such a command line upfront.
* nd/attr-pathspec-fix:
add: do not accept pathspec magic 'attr'
Merge branch 'bp/mv-submodules-with-fsmonitor' into maint
When fsmonitor is in use, after operation on submodules updates
.gitmodules, we lost track of the fact that we did so and relied on
stale fsmonitor data.
* bp/mv-submodules-with-fsmonitor:
git-mv: allow submodules and fsmonitor to work together
Merge branch 'js/rebase-i-autosquash-fix' into maint
"git rebase -i" did not clear the state files correctly when a run
of "squash/fixup" is aborted and then the user manually amended the
commit instead, which has been corrected.
* js/rebase-i-autosquash-fix:
rebase -i: be careful to wrap up fixup/squash chains
rebase -i --autosquash: demonstrate a problem skipping the last squash
"git interpret-trailers" and its underlying machinery had a buggy
code that attempted to ignore patch text after commit log message,
which triggered in various codepaths that will always get the log
message alone and never get such an input.
* jk/trailer-fixes:
append_signoff: use size_t for string offsets
sequencer: ignore "---" divider when parsing trailers
pretty, ref-filter: format %(trailers) with no_divider option
interpret-trailers: allow suppressing "---" divider
interpret-trailers: tighten check for "---" patch boundary
trailer: pass process_trailer_opts to trailer_info_get()
trailer: use size_t for iterating trailer list
trailer: use size_t for string offsets
The way .git/index and .git/sharedindex* files were initially
created gave these files different perm bits until they were
adjusted for shared repository settings. This was made consistent.
* cc/shared-index-permbits:
read-cache: make the split index obey umask settings
Recently added check for case smashing filesystems did not
correctly utilize the cached stat information, leading to false
breakage detected by our test suite, which has been corrected.
* nd/clone-case-smashing-warning:
clone: fix colliding file detection on APFS
As the warning message shown by existing versions of Git for
unknown index extensions is a bit too alarming, two new extensions
are held back and not written by default for the upcoming release.
* jn/eoie-ieot:
index: make index.threads=true enable ieot and eoie
ieot: default to not writing IEOT section
eoie: default to not writing EOIE section
Recently, built-in "rebase" tightened the error checking for a few
options that are passed to underlying "am", but we forgot to make
the matching change to the scripted version, which has been
corrected.
* js/rebase-am-options-fix:
legacy-rebase: backport -C<n> and --whitespace=<option> checks
index: make index.threads=true enable ieot and eoie
If a user explicitly sets
[index]
threads = true
to read the index using multiple threads, ensure that index writes
include the offset table by default to make that possible. This
ensures that the user's intent of turning on threading is respected.
In other words, permit the following configurations:
- index.threads and index.recordOffsetTable unspecified: do not write
the offset table yet (to avoid alarming the user with "ignoring IEOT
extension" messages when an older version of Git accesses the
repository) but do make use of multiple threads to read the index if
the supporting offset table is present.
This can also be requested explicitly by setting index.threads=true,
0, or >1 and index.recordOffsetTable=false.
- index.threads=false or 1: do not write the offset table, and do not
make use of the offset table.
One can set index.recordOffsetTable=false as well, to be more
explicit.
- index.threads=true, 0, or >1 and index.recordOffsetTable unspecified:
write the offset table and make use of threads at read time.
This can also be requested by setting index.threads=true, 0, >1, or
unspecified and index.recordOffsetTable=true.
Fortunately the complication is temporary: once most Git installations
have upgraded to a version with support for the IEOT and EOIE
extensions, we can flip the defaults for index.recordEndOfIndexEntries
and index.recordOffsetTable to true and eliminate the settings.
Helped-by: Ben Peart <benpeart@microsoft.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit b878579ae7 (clone: report duplicate entries on case-insensitive
filesystems - 2018-08-17) adds a warning to user when cloning a repo
with case-sensitive file names on a case-insensitive file system. The
"find duplicate file" check was doing by comparing inode number (and
only fall back to fspathcmp() when inode is known to be unreliable
because fspathcmp() can't cover all case folding cases).
The inode check is very simple, and wrong. It compares between a
32-bit number (sd_ino) and potentially a 64-bit number (st_ino). When
an inode is larger than 2^32 (which seems to be the case for APFS), it
will be truncated and stored in sd_ino, but comparing with itself will
fail.
As a result, instead of showing a pair of files that have the same
name, we show just one file (marked before the beginning of the
loop). We fail to find the original one.
but this is no longer a reliable test, there are 4G possible inodes
that can match sd_ino because we only match the lower 32 bits instead
of full 64 bits.
There are two options to go. Either we ignore inode and go with
fspathcmp() on Apple platform. This means we can't do accurate inode
check on HFS anymore, or even on APFS when inode numbers are still
below 2^32.
Or we just to to reduce the odds of matching a wrong file by checking
more attributes, counting mostly on st_size because st_xtime is likely
the same. This patch goes with this direction, hoping that false
positive chances are too small to be seen in practice.
While at there, enable the test on Cygwin (verified working by Ramsay
Jones)
(*) this is also already done inside match_stat_data()
Reported-by: Carlo Arenas <carenas@gmail.com> Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>
Commit 108f530385 (pack-objects: move tree_depth into 'struct
packing_data', 2018-08-16) started maintaining a tree_depth array that
matches the "objects" array. We extend the array when:
1. The objects array is extended, in which case we use realloc to
extend the tree_depth array.
2. A caller asks to store a tree_depth for object N, and this is the
first such request; we create the array from scratch and store the
value for N.
In the latter case, though, we use regular xmalloc(), and the depth
values for any objects besides N is undefined. This happens to not
trigger a bug with the current code, but the reasons are quite subtle:
- we never ask about the depth for any object with index i < N. This is
because we store the depth immediately for all trees and blobs. So
any such "i" must be a non-tree, and therefore we will never need to
care about its depth (in fact, we really only care about the depth of
trees).
- there are no objects at this point with index i > N, because we
always fill in the depth for a tree immediately after its object
entry is created (we may still allocate uninitialized depth entries,
but they'll be initialized by packlist_alloc() when it initializes
the entry in the "objects" array).
So it works, but only by chance. To be defensive, let's zero the array,
which matches the "unset" values which would be handed out by
oe_tree_depth() already.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 108f530385 (pack-objects: move tree_depth into 'struct
packing_data', 2018-08-16) dynamically manages a tree_depth array in
packing_data that maintains one of these invariants:
1. tree_depth is NULL (i.e., the requested options don't require us to
track tree depths)
2. tree_depth is non-NULL and has as many entries as the "objects"
array
We maintain (2) by:
a. When the objects array grows, grow tree_depth to the same size
(unless it's NULL, in which case we can leave it).
b. When a caller asks to set a depth via oe_set_tree_depth(), if
tree_depth is NULL we allocate it.
But in (b), we use the number of stored objects, _not_ the allocated
size of the objects array. So we can run into a situation like this:
1. packlist_alloc() needs to store the Nth object, so it grows the
objects array to M, where M > N.
2. oe_set_tree_depth() wants to store a depth, so it allocates an
array of length N. Now we've violated our invariant.
3. packlist_alloc() needs to store the N+1th object. But it _doesn't_
grow the objects array, since N <= M still holds. We try to assign
to tree_depth[N+1], which is out of bounds.
That doesn't happen in our test scripts, because the repositories they
use are so small, but it's easy to trigger by running:
echo HEAD | git pack-objects --revs --delta-islands --stdout >/dev/null
in any reasonably-sized repo (like git.git).
We can fix it by always growing the array to match pack->nr_alloc, not
pack->nr_objects. Likewise for the "layer" array from fe0ac2fb7f
(pack-objects: move 'layer' into 'struct packing_data', 2018-08-16),
which has the same bug.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>
As with EOIE, popular versions of Git do not support the new IEOT
extension yet. When accessing a Git repository written by a more
modern version of Git, they correctly ignore the unrecognized section,
but in the process they loudly warn
ignoring IEOT extension
resulting in confusion for users. Introduce the index extension more
gently by not writing it yet in this first version with support for
it. Soon, once sufficiently many users are running a modern version
of Git, we can flip the default so users benefit from this index
extension by default.
Introduce a '[index] recordOffsetTable' configuration variable to
control whether the new index extension is written.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 3b1d9e04 (eoie: add End of Index Entry (EOIE) extension,
2018-10-10) Git defaults to writing the new EOIE section when writing
out an index file. Usually that is a good thing because it improves
threaded performance, but when a Git repository is shared with older
versions of Git, it produces a confusing warning:
$ git status
ignoring EOIE extension
HEAD detached at 371ed0defa
nothing to commit, working tree clean
Let's introduce the new index extension more gently. First we'll roll
out the new version of Git that understands it, and then once
sufficiently many users are using such a version, we can flip the
default to writing it by default.
Introduce a '[index] recordEndOfIndexEntries' configuration variable
to allow interested users to benefit from this index extension early.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>