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The previous commit enforces MAX_XDIFF_SIZE at the
interfaces to xdiff: xdi_diff (which calls xdl_diff) and
ll_xdl_merge (which calls xdl_merge).
But we have another direct call to xdl_merge in
merge-file.c. If it were written today, this probably would
just use the ll_merge machinery. But it predates that code,
and uses slightly different options to xdl_merge (e.g.,
ZEALOUS_ALNUM).
We could try to abstract out an xdi_merge to match the
existing xdi_diff, but even that is difficult. Rather than
simply report error, we try to treat large files as binary,
and that distinction would happen outside of xdi_merge.
The simplest fix is to just replicate the MAX_XDIFF_SIZE
check in merge-file.c.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When we call into xdiff to perform a diff, we generally lose
the return code completely. Typically by ignoring the return
of our xdi_diff wrapper, but sometimes we even propagate
that return value up and then ignore it later. This can
lead to us silently producing incorrect diffs (e.g., "git
log" might produce no output at all, not even a diff header,
for a content-level diff).
In practice this does not happen very often, because the
typical reason for xdiff to report failure is that it
malloc() failed (it uses straight malloc, and not our
xmalloc wrapper). But it could also happen when xdiff
triggers one our callbacks, which returns an error (e.g.,
outf() in builtin/rerere.c tries to report a write failure
in this way). And the next patch also plans to add more
failure modes.
Let's notice an error return from xdiff and react
appropriately. In most of the diff.c code, we can simply
die(), which matches the surrounding code (e.g., that is
what we do if we fail to load a file for diffing in the
first place). This is not that elegant, but we are probably
better off dying to let the user know there was a problem,
rather than simply generating bogus output.
We could also just die() directly in xdi_diff, but the
callers typically have a bit more context, and can provide a
better message (and if we do later decide to pass errors up,
we're one step closer to doing so).
There is one interesting case, which is in diff_grep(). Here
if we cannot generate the diff, there is nothing to match,
and we silently return "no hits". This is actually what the
existing code does already, but we make it a little more
explicit.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Both "git show-ref -h" and "git show-ref --help" illustrated that the
"--exclude-existing" option makes the command read list of refs
from its standard input. Change only the "show-ref -h" output to
have a pair of "<>" around the placeholder that designate an input
file, i.e. "git show-ref --exclude-existing < <ref-list>".
* ah/show-ref-usage-string:
show-ref: place angle brackets around variables in usage string
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* rt/help-strings-fix:
tag, update-ref: improve description of option "create-reflog"
pull: don't mark values for option "rebase" for translation
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* gb/apply-comment-typofix:
apply: comment grammar fix
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The description of option "create-reflog" is "create_reflog", which
is neither a good description, nor a sensible string to translate.
Change it to a more meaningful message.
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"false|true|preserve" are actual values for option "rebase"
of the "git-pull" command and should therefore not be marked
for translation.
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Recent "git am" had regression when adding a Signed-off-by line
with its "-s" option by an unintended tightening of how an existing
trailer block is detected.
* jc/builtin-am-signoff-regression-fix:
am: match --signoff to the original scripted version
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Linus noticed that the recently reimplemented "git am -s" defines
the trailer block too rigidly, resulting in an unnecessary blank
line between the existing sign-offs and his new sign-off. An e-mail
submission sent to Linus in real life ends with mixture of sign-offs
and commentaries, e.g.
title here
message here
Signed-off-by: Original Author <original@auth.or>
[rv: tweaked frotz and nitfol]
Signed-off-by: Re Viewer <rv@ew.er>
Signed-off-by: Other Reviewer <other@rev.ewer>
---
patch here
Because the reimplementation reused append_signoff() helper that is
used by other codepaths, which is unaware that people intermix such
comments with their sign-offs in the trailer block, such a message
was judged to end with a non-trailer, resulting in an extra blank
line before adding a new sign-off.
The original scripted version of "git am" used a lot looser
definition, i.e. "if and only if there is no line that begins with
Signed-off-by:, add a blank line before adding a new sign-off". For
the upcoming release, stop using the append_signoff() in "git am"
and reimplement the looser definition used by the scripted version
to use only in "git am" to fix this regression in "am" while
avoiding new regressions to other users of append_signoff().
In the longer term, we should look into loosening append_signoff()
so that other codepaths that add a new sign-off behave the same way
as "git am -s", but that is a task for post-release.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When we show "branch@{0}", we format into a fixed-size
buffer using sprintf. This can overflow if you have long
branch names. We can fix it by using a temporary strbuf.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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'dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update' into maint
When re-priming the cache-tree opportunistically while committing
the in-core index as-is, we mistakenly invalidated the in-core
index too aggressively, causing the experimental split-index code
to unnecessarily rewrite the on-disk index file(s).
* dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update:
commit: don't rewrite shared index unnecessarily
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Minor code cleanup.
* jc/calloc-pathspec:
ps_matched: xcalloc() takes nmemb and then element size
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"git rev-list" does not take "--notes" option, but did not complain
when one is given.
* jk/rev-list-has-no-notes:
rev-list: make it obvious that we do not support notes
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An off-by-one error made "git remote" to mishandle a remote with a
single letter nickname.
* mh/get-remote-group-fix:
get_remote_group(): use skip_prefix()
get_remote_group(): eliminate superfluous call to strcspn()
get_remote_group(): rename local variable "space" to "wordlen"
get_remote_group(): handle remotes with single-character names
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Recent "git am" introduced a double-locking failure when used with
the "--3way" option that invokes rerere machinery.
* jk/am-rerere-lock-fix:
rerere: release lockfile in non-writing functions
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'dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update'
When re-priming the cache-tree opportunistically while committing
the in-core index as-is, we mistakenly invalidated the in-core
index too aggressively, causing the experimental split-index code
to unnecessarily rewrite the on-disk index file(s).
* dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update:
commit: don't rewrite shared index unnecessarily
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Error string fix.
* ah/reflog-typofix-in-error:
reflog: add missing single quote to error message
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Usage string fix.
* ah/read-tree-usage-string:
read-tree: replace bracket set with parentheses to clarify usage
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Usage string fix.
* ah/pack-objects-usage-strings:
pack-objects: place angle brackets around placeholders in usage strings
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There's a bug in builtin/am.c in which we take a lock on
MERGE_RR recursively. But rather than fix am.c, this patch
fixes the confusing interface from rerere.c that caused the
bug. Read on for the gory details.
The setup_rerere() function both reads the existing MERGE_RR
file, and takes MERGE_RR.lock. In the rerere() and
rerere_forget() functions, we end up in write_rr(), which
will then commit the lock file.
But for functions like rerere_clear() that do not write to
MERGE_RR, we expect the caller to have handled
setup_rerere(). That caller would then need to release the
lockfile, but it can't; the lock struct is local to
rerere.c.
For builtin/rerere.c, this is OK. We run a single rerere
operation and then exit immediately, which has the side
effect of rolling back the lockfile.
But in builtin/am.c, this is actively wrong. If we run "git
am -3 --skip", we call setup-rerere twice without releasing
the lock:
1. The "--skip" causes us to call am_rerere_clear(), which
calls setup_rerere(), but never drops the lock.
2. We then proceed to the next patch.
3. The "--3way" may cause us to call rerere() to handle
conflicts in that patch, but we are already holding the
lock. The lockfile code dies with:
BUG: prepare_tempfile_object called for active object
We could fix this by having rerere_clear() call
rollback_lock_file(). But it feels a bit odd for it to roll
back a lockfile that it did not itself take. So let's
simplify the interface further, and handle setup_rerere in
the function itself, taking away the question from the
caller over whether they need to do so.
We can give rerere_gc() the same treatment, as well (even
though it doesn't have any callers besides builtin/rerere.c
at this point). Note that these functions don't take flags
from their callers to pass along to setup_rerere; that's OK,
because the flags would not be meaningful for what they are
doing.
Both of those functions need to hold the lock because even
though they do not write to MERGE_RR, they are still writing
and should be protected from a simultaneous "rerere" run.
But rerere_remaining(), "rerere diff", and "rerere status"
are all read-only operations. They want to setup_rerere(),
but do not care about taking the lock in the first place.
Since our update of MERGE_RR is the usual atomic rename done
by commit_lock_file, they can just do a lockless read. For
that, we teach setup_rerere a READONLY flag to avoid the
lock.
As a bonus, this pushes builtin/rerere.c's setup_rerere call
closer to the functions that use it. Which means that "git
rerere totally-bogus-command" will no longer silently
exit(0) in a repository without rerere enabled.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git describe" without argument defaulted to describe the HEAD
commit, but "git describe --contains" didn't. Arguably, in a
repository used for active development, such defaulting would not
be very useful as the tip of branch is typically not tagged, but it
is better to be consistent.
* sg/describe-contains:
describe --contains: default to HEAD when no commit-ish is given
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The client side codepaths in "git push" have been cleaned up
and the user can request to perform an optional "signed push",
i.e. sign only when the other end accepts signed push.
* db/push-sign-if-asked:
push: add a config option push.gpgSign for default signed pushes
push: support signing pushes iff the server supports it
builtin/send-pack.c: use parse_options API
config.c: rename git_config_maybe_bool_text and export it as git_parse_maybe_bool
transport: remove git_transport_options.push_cert
gitremote-helpers.txt: document pushcert option
Documentation/git-send-pack.txt: document --signed
Documentation/git-send-pack.txt: wrap long synopsis line
Documentation/git-push.txt: document when --signed may fail
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"git notes merge" can be told with "--strategy=<how>" option how to
automatically handle conflicts; this can now be configured by
setting notes.mergeStrategy configuration variable.
* jk/notes-merge-config:
notes: teach git-notes about notes.<name>.mergeStrategy option
notes: add notes.mergeStrategy option to select default strategy
notes: add tests for --commit/--abort/--strategy exclusivity
notes: extract parse_notes_merge_strategy to notes-utils
notes: extract enum notes_merge_strategy to notes-utils.h
notes: document cat_sort_uniq rewriteMode
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Recent reimplementation of "git am" changed the format of state
files kept in $GIT_DIR/rebase-apply/ without meaning to do so,
primarily because write_file() API was cumbersome to use and it was
easy to mistakenly make text files with incomplete lines. Update
write_file() interface to make it harder to misuse.
* jc/am-state-fix:
write_file(): drop caller-supplied LF from calls to create a one-liner file
write_file_v(): do not leave incomplete line at the end
write_file(): drop "fatal" parameter
builtin/am: make sure state files are text
builtin/am: introduce write_state_*() helper functions
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"git log --cc" did not show any patch, even though most of the time
the user meant "git log --cc -p -m" to see patch output for commits
with a single parent, and combined diff for merge commits. The
command is taught to DWIM "--cc" (without "--raw" and other forms
of output specification) to "--cc -p -m".
* jc/log-p-cc:
builtin/log.c: minor reformat
log: show merge commit when --cc is given
log: when --cc is given, default to -p unless told otherwise
log: rename "tweak" helpers
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"git rev-list" does not take "--notes" option, but did not complain
when one is given.
* jk/rev-list-has-no-notes:
rev-list: make it obvious that we do not support notes
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The gitmodules API accessed from the C code learned to cache stuff
lazily.
* hv/submodule-config:
submodule: allow erroneous values for the fetchRecurseSubmodules option
submodule: use new config API for worktree configurations
submodule: extract functions for config set and lookup
submodule: implement a config API for lookup of .gitmodules values
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"git config --list" output was hard to parse when values consist of
multiple lines. "--name-only" option is added to help this.
* sg/config-name-only:
get_urlmatch: avoid useless strbuf write
format_config: simplify buffer handling
format_config: don't init strbuf
config: restructure format_config() for better control flow
completion: list variable names reliably with 'git config --name-only'
config: add '--name-only' option to list only variable names
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Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Remove a cache invalidation which would cause the shared index to be
rewritten on as-is commits.
When the cache-tree has changed, we need to update it. But we don't
necessarily need to update the shared index. So setting
active_cache_changed to SOMETHING_CHANGED is unnecessary. Instead, we
let update_main_cache_tree just update the CACHE_TREE_CHANGED bit.
In order to test this, make test-dump-split-index not segfault on
missing replace_bitmap/delete_bitmap. This new codepath is not called
now that the test passes, but is necessary to avoid a segfault when the
new test is run with the old builtin/commit.c code.
Signed-off-by: David Turner <dturner@twopensource.com>
Acked-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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-u and -i can only be given if -m, --reset, or --prefix is given.
Without parentheses, it looks like -u and -i can be used no matter
what, and the second pair of brackets is confusing.
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The error message can be seen by running
`git config gc.reflogexpire foo` and then `git reflog expire`.
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jc/calloc-pathspec:
ps_matched: xcalloc() takes nmemb and then element size
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Rewrite "am" in "C".
* pt/am-builtin:
i18n: am: fix typo in description of -b option
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"git am" that was recently reimplemented in C had a performance
regression in "git am --abort" that goes back to the version before
an attempted (and failed) patch application.
* pt/am-builtin-abort-fix:
am --skip/--abort: merge HEAD/ORIG_HEAD tree into index
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Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git clone $URL" in recent releases of Git contains a regression in
the code that invents a new repository name incorrectly based on
the $URL. This has been corrected.
* jk/guess-repo-name-regression-fix:
clone: use computed length in guess_dir_name
clone: add tests for output directory
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The "lockfile" API has been rebuilt on top of a new "tempfile" API.
* mh/tempfile:
credential-cache--daemon: use tempfile module
credential-cache--daemon: delete socket from main()
gc: use tempfile module to handle gc.pid file
lock_repo_for_gc(): compute the path to "gc.pid" only once
diff: use tempfile module
setup_temporary_shallow(): use tempfile module
write_shared_index(): use tempfile module
register_tempfile(): new function to handle an existing temporary file
tempfile: add several functions for creating temporary files
prepare_tempfile_object(): new function, extracted from create_tempfile()
tempfile: a new module for handling temporary files
commit_lock_file(): use get_locked_file_path()
lockfile: add accessor get_lock_file_path()
lockfile: add accessors get_lock_file_fd() and get_lock_file_fp()
create_bundle(): duplicate file descriptor to avoid closing it twice
lockfile: move documentation to lockfile.h and lockfile.c
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After "git am --opt1" stops, running "git am --opt2" pays attention
to "--opt2" only for the patch that caused the original invocation
to stop.
* pt/am-builtin-options:
am: let --signoff override --no-signoff
am: let command-line options override saved options
test_terminal: redirect child process' stdin to a pty
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When linked worktree is used, simultaneous "notes merge" instances
for the same ref in refs/notes/* are prevented from stomping on
each other.
* dt/notes-multiple:
notes: handle multiple worktrees
worktrees: add find_shared_symref
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Two logical lines that were not overly long was split in the middle,
which made them read worse.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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All of the callsites covered by this change call write_file() or
write_file_gently() to create a one-liner file. Drop the caller
supplied LF and let these callees to append it as necessary.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Junio C Hamano
Jeff King
Ralf Thielow
Alex Henrie
David Turner
Jiang Xin