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Code clean-up.
* sg/completion-gitcomp-nl-for-refs:
completion: use __gitcomp_nl() for completing refs
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Code clean-up.
* jc/report-path-error-to-dir:
report_path_error(): move to dir.c
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc clean-up.
* nd/doc-git-index-version:
git.txt: list index versions in plain English
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The run-command interface was easy to abuse and make a pipe for us
to read from the process, wait for the process to finish and then
attempt to read its output, which is a pattern that lead to a
deadlock. Fix such uses by introducing a helper to do this
correctly (i.e. we need to read first and then wait the process to
finish) and also add code to prevent such abuse in the run-command
helper.
* jk/run-command-capture:
run-command: forbid using run_command with piped output
trailer: use capture_command
submodule: use capture_command
wt-status: use capture_command
run-command: introduce capture_command helper
wt_status: fix signedness mismatch in strbuf_read call
wt-status: don't flush before running "submodule status"
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A test fix.
* tg/test-index-v4:
t1700: make test pass with index-v4
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"git prune" used to largely ignore broken refs when deciding which
objects are still being used, which could spread an existing small
damage and make it a larger one.
* jk/prune-with-corrupt-refs:
refs.c: drop curate_packed_refs
repack: turn on "ref paranoia" when doing a destructive repack
prune: turn on ref_paranoia flag
refs: introduce a "ref paranoia" flag
t5312: test object deletion code paths in a corrupted repository
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The split-index mode introduced at v2.3.0-rc0~41 was broken in the
codepath to protect us against a broken reimplementation of Git
that writes an invalid index with duplicated index entries, etc.
* tg/fix-check-order-with-split-index:
read-cache: fix reading of split index
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"git fetch" that fetches a commit using the allow-tip-sha1-in-want
extension could have failed to fetch all the requested refs.
* jk/fetch-pack:
fetch-pack: remove dead assignment to ref->new_sha1
fetch_refs_via_pack: free extra copy of refs
filter_ref: make a copy of extra "sought" entries
filter_ref: avoid overwriting ref->old_sha1 with garbage
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An failure early in the "git clone" that started creating the
working tree and repository could have resulted in some directories
and files left without getting cleaned up.
* jk/cleanup-failed-clone:
clone: drop period from end of die_errno message
clone: initialize atexit cleanup handler earlier
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Recommend format-patch and send-email for those who want to submit
patches to this project.
* jc/submitting-patches-mention-send-email:
SubmittingPatches: encourage users to use format-patch and send-email
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"git log --graph --no-walk A B..." is a otcnflicting request that
asks nonsense; no-walk tells us show discrete points in the
history, while graph asks to draw connections between these
discrete points. Forbid the combination.
* dj/log-graph-with-no-walk:
revision: forbid combining --graph and --no-walk
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"git rev-list --bisect --first-parent" does not work (yet) and can
even cause SEGV; forbid it. "git log --bisect --first-parent"
would not be useful until "git bisect --first-parent" materializes,
so it is also forbidden for now.
* kd/rev-list-bisect-first-parent:
rev-list: refuse --first-parent combined with --bisect
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Even though "git grep --quiet" is run merely to ask for the exit
status, we spawned the pager regardless. Stop doing that.
* ws/grep-quiet-no-pager:
grep: fix "--quiet" overwriting current output
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Code simplification.
* jk/simplify-csum-file-sha1fd-check:
sha1fd_check: die when we cannot open the file
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The prompt script (in contrib/) did not show the untracked sign
when working in a subdirectory without any untracked files.
* ct/prompt-untracked-fix:
git prompt: use toplevel to find untracked files
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* 'master' of git://ozlabs.org/~paulus/gitk:
gitk: Update .po files
gitk: l10n: Add Catalan translation
gitk: Fix typo in Russian translation
gitk: Remove tcl-format flag from a message that shouldn't have it
gitk: Pass --invert-grep option down to "git log"
gitk: Synchronize config file writes
gitk: Report errors in saving config file
gitk: Only write changed configuration variables
gitk: Enable mouse horizontal scrolling in diff pane
gitk: Default wrcomcmd to use --pretty=email
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The expected call sequence is for the caller to use match_pathspec()
repeatedly on a set of pathspecs, accumulating the "hits" in a
separate array, and then call this function to diagnose a pathspec
that never matched anything, as that can indicate a typo from the
command line, e.g. "git commit Maekfile".
Many builtin commands use this function from builtin/ls-files.c,
which is not a very healthy arrangement. ls-files might have been
the first command to feel the need for such a helper, but the need
is shared by everybody who uses the "match and then report" pattern.
Move it to dir.c where match_pathspec() is defined.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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At the first look, a user may think the default version is "23". Even
with UNIX background, there's no reference anywhere close that may
indicate this is glob or regex.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Hopefully with another batch or two, we would be ready for -rc0
to close this cycle.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The code that reads from the ctags file in the completion script
(in contrib/) did not spell ${param/pattern/string} substitution
correctly, which happened to work with bash but not with zsh.
* js/completion-ctags-pattern-substitution-fix:
contrib/completion: escape the forward slash in __git_match_ctag
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Restructure "git push" codepath to make it easier to add new
configuration bits and then add push.followTags configuration that
turns --follow-tags option on by default.
* jk/push-config:
push: allow --follow-tags to be set by config push.followTags
cmd_push: pass "flags" pointer to config callback
cmd_push: set "atomic" bit directly
git_push_config: drop cargo-culted wt_status pointer
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Documentation updates.
* nd/config-doc-camelCase:
*config.txt: stick to camelCase naming convention
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Test fixes.
* jk/test-annoyances:
t5551: make EXPENSIVE test cheaper
t5541: move run_with_cmdline_limit to test-lib.sh
t: pass GIT_TRACE through Apache
t: redirect stderr GIT_TRACE to descriptor 4
t: translate SIGINT to an exit
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The transfer.hiderefs support did not quite work for smart-http
transport.
* jk/smart-http-hide-refs:
upload-pack: do not check NULL return of lookup_unknown_object
upload-pack: fix transfer.hiderefs over smart-http
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"git tag -h" used to show the "--column" and "--sort" options
that are about listing in a wrong section.
* jk/tag-h-column-is-a-listing-option:
tag: fix some mis-organized options in "-h" listing
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code cleanup.
* rs/use-isxdigit:
use isxdigit() for checking if a character is a hexadecimal digit
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Code simplification.
* rs/deflate-init-cleanup:
zlib: initialize git_zstream in git_deflate_init{,_gzip,_raw}
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Code simplification.
* ak/git-done-help-cleanup:
git: make was_alias and done_help non-static
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Code simplification.
* sg/completion-remote:
completion: simplify __git_remotes()
completion: add a test for __git_remotes() helper function
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Documentation fixes.
* mg/doc-status-color-slot:
config,completion: add color.status.unmerged
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"git log --decorate" did not reset colors correctly around the
branch names.
* jc/decorate-leaky-separator-color:
log --decorate: do not leak "commit" color into the next item
Documentation/config.txt: simplify boolean description in the syntax section
Documentation/config.txt: describe 'color' value type in the "Values" section
Documentation/config.txt: have a separate "Values" section
Documentation/config.txt: describe the structure first and then meaning
Documentation/config.txt: explain multi-valued variables once
Documentation/config.txt: avoid unnecessary negation
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"git -C '' subcmd" refused to work in the current directory, unlike
"cd ''" which silently behaves as a no-op.
* kn/git-cd-to-empty:
git: treat "git -C '<path>'" as a no-op when <path> is empty
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"git imap-send" learned to optionally talk with an IMAP server via
libcURL; because there is no other option when Git is built with
NO_OPENSSL option, use that codepath by default under such
configuration.
* km/imap-send-libcurl-options:
imap-send: use cURL automatically when NO_OPENSSL defined
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Workarounds for certain build of GPG that triggered false breakage
in a test.
* mg/verify-commit:
t7510: do not fail when gpg warns about insecure memory
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"git rebase -i" recently started to include the number of
commits in the insn sheet to be processed, but on a platform
that prepends leading whitespaces to "wc -l" output, the numbers
are shown with extra whitespaces that aren't necessary.
* es/rebase-i-count-todo:
rebase-interactive: re-word "item count" comment
rebase-interactive: suppress whitespace preceding item count
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We did not parse username followed by literal IPv6 address in SSH
transport URLs, e.g. ssh://user@[2001:db8::1]:22/repo.git
correctly.
* tb/connect-ipv6-parse-fix:
t5500: show user name and host in diag-url
t5601: add more test cases for IPV6
connect.c: allow ssh://user@[2001:db8::1]/repo.git
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Because run_command both spawns and wait()s for the command
before returning control to the caller, any reads from the
pipes we open must necessarily happen after wait() returns.
This can lead to deadlock, as the child process may block
on writing to us while we are blocked waiting for it to
exit.
Worse, it only happens when the child fills the pipe
buffer, which means that the problem may come and go
depending on the platform and the size of the output
produced by the child.
Let's detect and flag this dangerous construct so that we
can catch potential bugs early in the test suite rather than
having them happen in the field.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When we read from a trailer.*.command sub-program, the
current code uses run_command followed by a pipe read, which
can result in deadlock (though in practice you would have to
have a large trailer for this to be a problem). The current
code also leaks the file descriptor for the pipe to the
sub-command.
Instead, let's use capture_command, which makes this simpler
(and we can get rid of our custom helper).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In is_submodule_commit_present, we call run_command followed
by a pipe read, which is prone to deadlock. It is unlikely
to happen in this case, as rev-list should never produce
more than a single line of output, but it does not hurt to
avoid an anti-pattern (and using the helper simplifies the
setup and cleanup).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When we spawn "git submodule status" to read its output, we
use run_command() followed by strbuf_read() read from the
pipe. This can deadlock if the subprocess output is larger
than the system pipe buffer.
Furthermore, if start_command() fails, we'll try to read
from a bogus descriptor (probably "-1" or a descriptor we
just closed, but it is a bad idea for us to make assumptions
about how start_command implements its error handling). And
if start_command succeeds, we leak the file descriptor for
the pipe to the child.
All of these can be solved by using the capture_command
helper.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Something as simple as reading the stdout from a command
turns out to be rather hard to do right. Doing:
cmd.out = -1;
run_command(&cmd);
strbuf_read(&buf, cmd.out, 0);
can result in deadlock if the child process produces a large
amount of output. What happens is:
1. The parent spawns the child with its stdout connected
to a pipe, of which the parent is the sole reader.
2. The parent calls wait(), blocking until the child exits.
3. The child writes to stdout. If it writes more data than
the OS pipe buffer can hold, the write() call will
block.
This is a deadlock; the parent is waiting for the child to
exit, and the child is waiting for the parent to call
read().
So we might try instead:
start_command(&cmd);
strbuf_read(&buf, cmd.out, 0);
finish_command(&cmd);
But that is not quite right either. We are examining cmd.out
and running finish_command whether start_command succeeded
or not, which is wrong. Moreover, these snippets do not do
any error handling. If our read() fails, we must make sure
to still call finish_command (to reap the child process).
And both snippets failed to close the cmd.out descriptor,
which they must do (provided start_command succeeded).
Let's introduce a run-command helper that can make this a
bit simpler for callers to get right.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We do that almost everywhere, because it's faster for large number of
refs, see a31e62629 (completion: optimize refs completion, 2011-10-15).
These were the last two places where we still used __gitcomp() for
completing refs.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We call strbuf_read(), and want to know whether we got any
output. To do so, we assign the result to a size_t, and
check whether it is non-zero.
But strbuf_read returns a signed ssize_t. If it encounters
an error, it will return -1, and we'll end up treating this
the same as if we had gotten output. Instead, we can just
check whether our buffer has anything in it (which is what
we care about anyway, and is the same thing since we know
the buffer was empty to begin with).
Note that the "len" variable actually has two roles in this
function. Now that we've eliminated the first, we can push the
declaration closer to the point of use for the second one.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This is a holdover from the original implementation in
ac8d5af (builtin-status: submodule summary support,
2008-04-12), which just had the sub-process output to our
descriptor; we had to make sure we had flushed any data that
we produced before it started writing.
Since 3ba7407 (submodule summary: ignore --for-status
option, 2013-09-06), however, we pipe the sub-process output
back to ourselves. So there's no longer any need to flush
(it does not hurt, but it may leave readers wondering why we
do it).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The split index extension uses ewah bitmaps to mark index entries as
deleted, instead of removing them from the index directly. This can
result in an on-disk index, in which entries of stage #0 and higher
stages appear, which are removed later when the index bases are merged.
15999d0 read_index_from(): catch out of order entries when reading an
index file introduces a check which checks if the entries are in order
after each index entry is read in do_read_index. This check may however
fail when a split index is read.
Fix this by moving checking the index after we know there is no split
index or after the split index bases are successfully merged instead.
Signed-off-by: Thomas Gummerer <t.gummerer@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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Output from "git log --decorate" mentions HEAD when it points at a
tip of an branch differently from a detached HEAD.
This is a potentially backward-incompatible change.
* mg/log-decorate-HEAD:
log: decorate HEAD with branch name
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Junio C Hamano
Nguyễn Thái Ngọc Duy
Jeff King
SZEDER Gábor
Thomas Gummerer