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"git status" has trouble showing where it came from by interpreting
reflog entries that recordcertain events, e.g. "checkout @{u}", and
gives a hard/fatal error. Even though it inherently is impossible
to give a correct answer because the reflog entries lose some
information (e.g. "@{u}" does not record what branch the user was
on hence which branch 'the upstream' needs to be computed, and even
if the record were available, the relationship between branches may
have changed), at least hide the error to allow "status" show its
output.
* jt/interpret-branch-name-fallback:
wt-status: tolerate dangling marks
refs: move dwim_ref() to header file
sha1-name: replace unsigned int with option struct
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CI noise reduction.
* js/ci-squelch-false-failure:
ci: avoid ugly "failure" in the `ci-config` job
ci: fix indentation of the `ci-config` job
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"git imap-send" updates.
* pb/imap-send-updates:
git-imap-send.txt: add note about localized Gmail folders
git-imap-send.txt: do verify SSL certificate for gmail.com
git-imap-send.txt: don't duplicate 'Examples' sections
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The "--format=" option to the "for-each-ref" command and friends
learned a few more tricks, e.g. the ":short" suffix that applies to
"objectname" now also can be used for "parent", "tree", etc.
* hv/ref-filter-misc:
ref-filter: add `sanitize` option for 'subject' atom
pretty: refactor `format_sanitized_subject()`
ref-filter: add `short` modifier to 'parent' atom
ref-filter: add `short` modifier to 'tree' atom
ref-filter: rename `objectname` related functions and fields
ref-filter: modify error messages in `grab_objectname()`
ref-filter: refactor `grab_objectname()`
ref-filter: support different email formats
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Fixups to a topic in 'next'.
* ss/submodule-summary-in-c-fixes:
t7421: eliminate 'grep' check in t7421.4 for mingw compatibility
submodule: fix style in function definition
submodule: eliminate unused parameters from print_submodule_summary()
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Internal API clean-up to handle two options "diff-index" and "log"
have, which happen to share the same short form, more sensibly.
* so/separate-field-for-m-and-diff-merges:
revision: add separate field for "-m" of "diff-index -m"
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"git worktree" gained a "repair" subcommand to help users recover
after moving the worktrees or repository manually without telling
Git. Also, "git init --separate-git-dir" no longer corrupts
administrative data related to linked worktrees.
* es/worktree-repair:
init: make --separate-git-dir work from within linked worktree
init: teach --separate-git-dir to repair linked worktrees
worktree: teach "repair" to fix outgoing links to worktrees
worktree: teach "repair" to fix worktree back-links to main worktree
worktree: add skeleton "repair" command
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Leakfix.
* jk/worktree-check-clean-leakfix:
worktree: fix leak in check_clean_worktree()
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When a packfile is removed by "git repack", multi-pack-index gets
cleared; the code was taught to do so less aggressively by first
checking if the midx actually refers to a pack that no longer
exists.
* tb/repack-clearing-midx:
midx: traverse the local MIDX first
builtin/repack.c: invalidate MIDX only when necessary
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Yet another subcommand of "git submodule" is getting rewritten in C.
* ss/submodule-summary-in-c:
submodule: port submodule subcommand 'summary' from shell to C
t7421: introduce a test script for verifying 'summary' output
submodule: rename helper functions to avoid ambiguity
submodule: remove extra line feeds between callback struct and macro
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc update.
* pb/doc-external-diff-env:
git.txt: correct stale 'GIT_EXTERNAL_DIFF' description
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It was possible for xrealloc() to send a non-NULL pointer that has
been freed, which has been fixed.
* jk/xrealloc-avoid-use-after-free:
xrealloc: do not reuse pointer freed by zero-length realloc()
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Doc update.
* jc/post-checkout-doc:
doc: clarify how exit status of post-checkout hook is used
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Doc update.
* pb/doc-sequence-editor-configuration:
doc: mention GIT_SEQUENCE_EDITOR and 'sequence.editor' more
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Doc update.
* hl/bisect-doc-clarify-bad-good-ordering:
bisect: swap command-line options in documentation
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Documentation update for "--no-abbrev-commit".
* so/pretty-abbrev-doc:
pretty-options.txt: fix --no-abbrev-commit description
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"git diff --stat -w" showed 0-line changes for paths whose changes
were only whitespaces, which was not intuitive. We now omit such
paths from the stat output.
* mr/diff-hide-stat-wo-textual-change:
diff: teach --stat to ignore uninteresting modifications
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Updates to on-demand fetching code in lazily cloned repositories.
* jt/lazy-fetch:
fetch: no FETCH_HEAD display if --no-write-fetch-head
fetch-pack: remove no_dependents code
promisor-remote: lazy-fetch objects in subprocess
fetch-pack: do not lazy-fetch during ref iteration
fetch: only populate existing_refs if needed
fetch: avoid reading submodule config until needed
fetch: allow refspecs specified through stdin
negotiator/noop: add noop fetch negotiator
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Various callers of run_command API has been modernized.
* jc/run-command-use-embedded-args:
run_command: teach API users to use embedded 'args' more
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A handful of places in in-tree code still relied on being able to
execute the git subcommands, especially built-ins, in "git-foo"
form, which have been corrected.
* jc/undash-in-tree-git-callers:
credential-cache: use child_process.args
cvsexportcommit: do not run git programs in dashed form
transport-helper: do not run git-remote-ext etc. in dashed form
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Trim an unused binary and turn a bunch of commands into built-in.
* jk/slimmed-down:
drop vcs-svn experiment
make git-fast-import a builtin
make git-bugreport a builtin
make credential helpers builtins
Makefile: drop builtins from MSVC pdb list
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"git add -p" update.
* pw/add-p-allowed-options-fix:
add -p: fix checking of user input
add -p: use ALLOC_GROW_BY instead of ALLOW_GROW
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Bugfix for "git fetch" when the packfile URI capability is in use.
* jt/fetch-pack-loosen-validation-with-packfile-uri:
fetch-pack: make packfile URIs work with transfer.fsckobjects
fetch-pack: document only_packfile in get_pack()
(various): document from_promisor parameter
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Test clean-up.
* ss/t7401-modernize:
t7401: add a NEEDSWORK
t7401: change indentation for enhanced readability
t7401: change syntax of test_i18ncmp calls for clarity
t7401: use 'short' instead of 'verify' and cut in rev-parse calls
t7401: modernize style
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"git rebase -i" learns a bit more options.
* pw/rebase-i-more-options:
t3436: do not run git-merge-recursive in dashed form
rebase: add --reset-author-date
rebase -i: support --ignore-date
rebase -i: support --committer-date-is-author-date
am: stop exporting GIT_COMMITTER_DATE
rebase -i: add --ignore-whitespace flag
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When a user checks out the upstream branch of HEAD, the upstream branch
not being a local branch, and then runs "git status", like this:
git clone $URL client
cd client
git checkout @{u}
git status
no status is printed, but instead an error message:
fatal: HEAD does not point to a branch
(This error message when running "git branch" persists even after
checking out other things - it only stops after checking out a branch.)
This is because "git status" reads the reflog when determining the "HEAD
detached" message, and thus attempts to DWIM "@{u}", but that doesn't
work because HEAD no longer points to a branch.
Therefore, when calculating the status of a worktree, tolerate dangling
marks. This is done by adding an additional parameter to
dwim_ref() and repo_dwim_ref().
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This makes it clear that dwim_ref() is just repo_dwim_ref() without the
first parameter.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In preparation for a future patch adding a boolean parameter to
repo_interpret_branch_name(), which might be easily confused with an
existing unsigned int parameter, refactor repo_interpret_branch_name()
to take an option struct instead of the unsigned int parameter.
The static function interpret_branch_mark() is also updated to take the
option struct in preparation for that future patch, since it will also
make use of the to-be-introduced boolean parameter.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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887952b8c6 ("fetch: optionally allow disabling FETCH_HEAD update",
2020-08-18) introduced the ability to disable writing to FETCH_HEAD
during fetch, but did not suppress the "<source> -> FETCH_HEAD" message
when this ability is used. This message is misleading in this case,
because FETCH_HEAD is not written. Also, because "fetch" is used to
lazy-fetch missing objects in a partial clone, this significantly
clutters up the output in that case since the objects to be fetched are
potentially numerous.
Therefore, suppress this message when --no-write-fetch-head is passed
(but not when --dry-run is set).
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In the common case where users have _not_ pushed a `ci-config` branch to
configure which branches should be included in the GitHub workflow runs,
there is a big fat ugly annotation about a failure in the run's log:
X Check failure on line 1 in .github
@github-actions github-actions / ci-config
.github#L1
Process completed with exit code 128.
The reason is that the `ci-config` job tries to clone that `ci-config`
branch, and even if it is configured to continue on error, the
annotation is displayed, and it is distracting.
Let's just handle this on the shell script level, so that the job's step
is not marked as a failure.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The section added in e76eec35540f (ci: allow per-branch config for
GitHub Actions, 2020-05-07) contains a `&&`-chain that connects several
commands. The first command is actually so long that it stretches over
multiple lines, and as per usual, the continuation lines are indented one
more level than the first.
However, the subsequent commands in the `&&`-chain were also indented
one more level than the first command, which was almost certainly
unintended.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This patch fixes a bug where xrealloc(ptr, 0) can double-free and
corrupt the heap on some platforms (including at least glibc).
The C99 standard says of malloc (section 7.20.3):
If the size of the space requested is zero, the behavior is
implementation-defined: either a null pointer is returned, or the
behavior is as if the size were some nonzero value, except that the
returned pointer shall not be used to access an object.
So we might get NULL back, or we might get an actual pointer (but we're
not allowed to look at its contents). To simplify our code, our
xmalloc() handles a NULL return by converting it into a single-byte
allocation. That way callers get consistent behavior. This was done way
back in 4e7a2eccc2 (?alloc: do not return NULL when asked for zero
bytes, 2005-12-29).
We also gave xcalloc() and xrealloc() the same treatment. And according
to C99, that is fine; the text above is in a paragraph that applies to
all three. But what happens to the memory we passed to realloc() in such
a case? I.e., if we do:
ret = realloc(ptr, 0);
and "ptr" is non-NULL, but we get NULL back, is "ptr" still valid? C99
doesn't cover this case specifically, but says (section 7.20.3.4):
The realloc function deallocates the old object pointed to by ptr and
returns a pointer to a new object that has the size specified by size.
So "ptr" is now deallocated, and we must only look at "ret". And since
"ret" is NULL, that means we have no allocated object at all. But that's
not quite the whole story. It also says:
If memory for the new object cannot be allocated, the old object is
not deallocated and its value is unchanged.
[...]
The realloc function returns a pointer to the new object (which may
have the same value as a pointer to the old object), or a null pointer
if the new object could not be allocated.
So if we see a NULL return with a non-zero size, we can expect that the
original object _is_ still valid. But with a non-zero size, it's
ambiguous. The NULL return might mean a failure (in which case the
object is valid), or it might mean that we successfully allocated
nothing, and used NULL to represent that.
The glibc manpage for realloc() explicitly says:
[...]if size is equal to zero, and ptr is not NULL, then the call is
equivalent to free(ptr).
Likewise, this StackOverflow answer:
https://stackoverflow.com/a/2135302
claims that C89 gave similar guidance (but I don't have a copy to verify
it). A comment on this answer:
https://stackoverflow.com/a/2022410
claims that Microsoft's CRT behaves the same.
But our current "retry with 1 byte" code passes the original pointer
again. So on glibc, we effectively free() the pointer and then try to
realloc() it again, which is undefined behavior.
The simplest fix here is to just pass "ret" (which we know to be NULL)
to the follow-up realloc(). But that means that a system which _doesn't_
free the original pointer would leak it. It's not clear if any such
systems exist, and that interpretation of the standard seems unlikely
(I'd expect a system that doesn't deallocate to simply return the
original pointer in this case). But it's easy enough to err on the safe
side, and just never pass a zero size to realloc() at all.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In fde97d8ac6 (Update documentation to remove incorrect GIT_DIFF_OPTS
example., 2006-11-27), the description of the 'GIT_EXTERNAL_DIFF'
variable was moved from 'diff-format.txt' to 'git.txt', and the
documentation was updated to remove a 'diff(1)' invocation since Git did
not use an external diff program anymore by default.
However, the description of 'GIT_EXTERNAL_DIFF' still mentions "instead
of the diff invocation described above", which is confusing.
Correct that outdated sentence.
Also, link to git(1) in 'diff-generate-patch.txt' when GIT_DIFF_OPTS and
GIT_EXTERNAL_DIFF are mentioned, so that users can easily know what
these variables are about.
Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code simplification by removing ineffective optimization.
* ps/ref-transaction-hook:
refs: remove lookup cache for reference-transaction hook
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Feeding "$ZERO_OID" to "git log --ignore-missing --stdin", and
running "git log --ignore-missing $ZERO_OID" fell back to start
digging from HEAD; it has been corrected to become a no-op, like
"git log --tags=no-tag-matches-this-pattern" does.
* jk/rev-input-given-fix:
revision: set rev_input_given in handle_revision_arg()
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Error message update.
* jc/ident-whose-ident:
ident: say whose identity is missing when giving user.name hint
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The description of --cached/--index options in "git apply --help"
has been updated.
* rp/apply-cached-doc:
git-apply.txt: update descriptions of --cached, --index
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"git restore/checkout --no-overlay" with wildcarded pathspec
mistakenly removed matching paths in subdirectories, which has been
corrected.
* rs/checkout-no-overlay-pathspec-fix:
checkout, restore: make pathspec recursive
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Finishing touches.
* al/bisect-first-parent:
bisect: add first-parent option to documentation
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Preliminary code clean-up before introducing "negative refspec".
* jk/refspecs-cleanup:
refspec: make sure stack refspec_item variables are zeroed
refspec: fix documentation referring to refspec_item
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Accesses to two pseudorefs have been updated to properly use ref
API.
* hn/refs-pseudorefs:
sequencer: treat REVERT_HEAD as a pseudo ref
builtin/commit: suggest update-ref for pseudoref removal
sequencer: treat CHERRY_PICK_HEAD as a pseudo ref
refs: make refs_ref_exists public
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Long ago, we decided to use 3 threads by default when running the
index-pack task in parallel, which has been adjusted a bit upwards.
* jk/index-pack-w-more-threads:
index-pack: adjust default threading cap
p5302: count up to online-cpus for thread tests
p5302: disable thread-count parameter tests by default
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The parser for "git for-each-ref --format=..." was too loose when
parsing the "%(trailers...)" atom, and forgot that "trailers" and
"trailers:<modifiers>" are the only two allowed forms, which has
been corrected.
* hv/ref-filter-trailers-atom-parsing-fix:
ref-filter: 'contents:trailers' show error if `:` is missing
t6300: unify %(trailers) and %(contents:trailers) tests
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Updates into a lazy/partial clone with a submodule did not work
well with transfer.fsckobjects set.
* jt/promisor-pack-fix:
fetch-pack: in partial clone, pass --promisor
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The output from the "diff" family of the commands had abbreviated
object names of blobs involved in the patch, but its length was not
affected by the --abbrev option. Now it is.
* dd/diff-customize-index-line-abbrev:
diff: index-line: respect --abbrev in object's name
t4013: improve diff-post-processor logic
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Aesthetic fix to a CI configuration file.
* am/ci-wsfix:
ci: fix inconsistent indentation
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Add separate 'match_missing' field for diff-index to use and set it when we
encounter "-m" option. This field won't then be cleared when another meaning of
"-m" is reverted (e.g., by "--no-diff-merges"), nor it will be affected by
future option(s) that might drive 'ignore_merges' field.
Use this new field from diff-lib:do_oneway_diff() instead of reusing
'ignore_merges' field.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The intention of `git init --separate-work-dir=<path>` is to move the
.git/ directory to a location outside of the main worktree. When used
within a linked worktree, however, rather than moving the .git/
directory as intended, it instead incorrectly moves the worktree's
.git/worktrees/<id> directory to <path>, thus disconnecting the linked
worktree from its parent repository and breaking the worktree in the
process since its local .git file no longer points at a location at
which it can find the object database. Fix this broken behavior.
An intentional side-effect of this change is that it also closes a
loophole not caught by ccf236a23a (init: disallow --separate-git-dir
with bare repository, 2020-08-09) in which the check to prevent
--separate-git-dir being used in conjunction with a bare repository was
unable to detect the invalid combination when invoked from within a
linked worktree. Therefore, add a test to verify that this loophole is
closed, as well.
Reported-by: Henré Botha <henrebotha@gmail.com>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Junio C Hamano
Jonathan Tan
Johannes Schindelin
Jeff King
Philippe Blain
Sergey Organov
Eric Sunshine