"git pull --rebase", when there is no new commits on our side since
we forked from the upstream, should be able to fast-forward without
invoking "git rebase", but it didn't.
Merge branch 'ak/commit-only-allow-empty' into maint
"git commit --allow-empty --only" (no pathspec) with dirty index
ought to be an acceptable way to create a new commit that does not
change any paths, but it was forbidden, perhaps because nobody
needed it so far.
* ak/commit-only-allow-empty:
commit: remove 'Clever' message for --only --amend
commit: make --only --allow-empty work without paths
Merge branch 'jk/stash-disable-renames-internally' into maint
When diff.renames configuration is on (and with Git 2.9 and later,
it is enabled by default, which made it worse), "git stash"
misbehaved if a file is removed and another file with a very
similar content is added.
* jk/stash-disable-renames-internally:
stash: prefer plumbing over git-diff
Merge branch 'jk/http-walker-limit-redirect' into maint
Update the error messages from the dumb-http client when it fails
to obtain loose objects; we used to give sensible error message
only upon 404 but we now forbid unexpected redirects that needs to
be reported with something sensible.
* jk/http-walker-limit-redirect:
http-walker: complain about non-404 loose object errors
http: treat http-alternates like redirects
http: make redirects more obvious
remote-curl: rename shadowed options variable
http: always update the base URL for redirects
http: simplify update_url_from_redirect
Merge branch 'jc/renormalize-merge-kill-safer-crlf' into maint
Fix a corner case in merge-recursive regression that crept in
during 2.10 development cycle.
* jc/renormalize-merge-kill-safer-crlf:
convert: git cherry-pick -Xrenormalize did not work
merge-recursive: handle NULL in add_cacheinfo() correctly
cherry-pick: demonstrate a segmentation fault
The output from "git worktree list" was made in readdir() order,
and was unstable.
* nd/worktree-list-fixup:
worktree list: keep the list sorted
worktree.c: get_worktrees() takes a new flag argument
get_worktrees() must return main worktree as first item even on error
worktree: reorder an if statement
worktree.c: zero new 'struct worktree' on allocation
Merge branch 'hv/submodule-not-yet-pushed-fix' into maint
The code in "git push" to compute if any commit being pushed in the
superproject binds a commit in a submodule that hasn't been pushed
out was overly inefficient, making it unusable even for a small
project that does not have any submodule but have a reasonable
number of refs.
* hv/submodule-not-yet-pushed-fix:
submodule_needs_pushing(): explain the behaviour when we cannot answer
batch check whether submodule needs pushing into one call
serialize collection of refs that contain submodule changes
serialize collection of changed submodules
Merge branch 'dt/empty-submodule-in-merge' into maint
An empty directory in a working tree that can simply be nuked used
to interfere while merging or cherry-picking a change to create a
submodule directory there, which has been fixed..
* dt/empty-submodule-in-merge:
submodules: allow empty working-tree dirs in merge/cherry-pick
Update the isatty() emulation for Windows by updating the previous
hack that depended on internals of (older) MSVC runtime.
* js/mingw-isatty:
mingw: replace isatty() hack
mingw: fix colourization on Cygwin pseudo terminals
mingw: adjust is_console() to work with stdin
mingw: intercept isatty() to handle /dev/null as Git expects it
The character width table has been updated to match Unicode 9.0
* bb/unicode-9.0:
unicode_width.h: update the width tables to Unicode 9.0
update_unicode.sh: remove the plane filter
update_unicode.sh: automatically download newer definition files
update_unicode.sh: pin the uniset repo to a known good commit
update_unicode.sh: remove an unnecessary subshell level
update_unicode.sh: move it into contrib/update-unicode
There are some "gray areas" around when to omit braces from
a conditional or loop body. Since that seems to have
resulted in some arguments, let's be a little more clear
about our preferred style.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t7810: avoid assumption about invalid regex syntax
A few of the tests want to check that "git grep -P -E" will
override -P with -E, and vice versa. To do so, we use a
regex with "\x{..}", which is valid in PCRE but not defined
by POSIX (for basic or extended regular expressions).
However, POSIX declares quite a lot of syntax, including
"\x", as "undefined". That leaves implementations free to
extend the standard if they choose. At least one, musl libc,
implements "\x" in the same way as PCRE. Our tests check
that "-E" complains about "\x", which fails with musl.
We can fix this by finding some construct which behaves
reliably on both PCRE and POSIX, but differently in each
system.
One such construct is the use of backslash inside brackets.
In PCRE, "[\d]" interprets "\d" as it would outside the
brackets, matching a digit. Whereas in POSIX, the backslash
must be treated literally, and we match either it or a
literal "d". Moreover, implementations are not free to
change this according to POSIX, so we should be able to rely
on it.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
execv_dashed_external: wait for child on signal death
When you hit ^C to interrupt a git command going to a pager,
this usually leaves the pager running. But when a dashed
external is in use, the pager ends up in a funny state and
quits (but only after eating one more character from the
terminal!). This fixes it.
Explaining the reason will require a little background.
When git runs a pager, it's important for the git process to
hang around and wait for the pager to finish, even though it
has no more data to feed it. This is because git spawns the
pager as a child, and thus the git process is the session
leader on the terminal. After it dies, the pager will finish
its current read from the terminal (eating the one
character), and then get EIO trying to read again.
When you hit ^C, that sends SIGINT to git and to the pager,
and it's a similar situation. The pager ignores it, but the
git process needs to hang around until the pager is done. We
addressed that long ago in a3da882120 (pager: do
wait_for_pager on signal death, 2009-01-22).
But when you have a dashed external (or an alias pointing to
a builtin, which will re-exec git for the builtin), there's
an extra process in the mix. For instance, running:
$ git -c alias.l=log l
will end up with a process tree like:
git (parent)
\
git-log (child)
\
less (pager)
If you hit ^C, SIGINT goes to all of them. The pager ignores
it, and the child git process will end up in wait_for_pager().
But the parent git process will die, and the usual EIO
trouble happens.
So we really want the parent git process to wait_for_pager(),
but of course it doesn't know anything about the pager at
all, since it was started by the child. However, we can
have it wait on the git-log child, which in turn is waiting
on the pager. And that's what this patch does.
There are a few design decisions here worth explaining:
1. The new feature is attached to run-command's
clean_on_exit feature. Partly this is convenience,
since that feature already has a signal handler that
deals with child cleanup.
But it's also a meaningful connection. The main reason
that dashed externals use clean_on_exit is to bind the
two processes together. If somebody kills the parent
with a signal, we propagate that to the child (in this
instance with SIGINT, we do propagate but it doesn't
matter because the original signal went to the whole
process group). Likewise, we do not want the parent
to go away until the child has done so.
In a traditional Unix world, we'd probably accomplish
this binding by just having the parent execve() the
child directly. But since that doesn't work on Windows,
everything goes through run_command's more spawn-like
interface.
2. We do _not_ automatically waitpid() on any
clean_on_exit children. For dashed externals this makes
sense; we know that the parent is doing nothing but
waiting for the child to exit anyway. But with other
children, it's possible that the child, after getting
the signal, could be waiting on the parent to do
something (like closing a descriptor). If we were to
wait on such a child, we'd end up in a deadlock. So
this errs on the side of caution, and lets callers
enable the feature explicitly.
3. When we send children the cleanup signal, we send all
the signals first, before waiting on any children. This
is to avoid the case where one child might be waiting
on another one to exit, causing a deadlock. We inform
all of them that it's time to die before reaping any.
In practice, there is only ever one dashed external run
from a given process, so this doesn't matter much now.
But it future-proofs us if other callers start using
the wait_after_clean mechanism.
There's no automated test here, because it would end up racy
and unportable. But it's easy to reproduce the situation by
running the log command given above and hitting ^C.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
execv_dashed_external: stop exiting with negative code
When we try to exec a git sub-command, we pass along the
status code from run_command(). But that may return -1 if we
ran into an error with pipe() or execve(). This tends to
work (and end up as 255 due to twos-complement wraparound
and truncation), but in general it's probably a good idea to
avoid negative exit codes for portability.
We can easily translate to the normal generic "128" code we
get when syscalls cause us to die.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we run a dashed external, we use the one-liner
run_command_v_opt() to do so. Let's switch to using a
child_process struct, which has two advantages:
1. We can drop all of the allocation and cleanup code for
building our custom argv array, and just rely on the
builtin argv_array (at the minor cost of doing a few
extra mallocs).
2. We have access to the complete range of child_process
options, not just the ones that the "_opt()" form can
forward.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git_exec_path: do not return the result of getenv()
The result of getenv() is not guaranteed by POSIX to last
beyond another call to getenv(), or setenv(), etc. We
should duplicate the string before returning to the caller
to avoid any surprises.
We already keep a cached pointer to avoid repeatedly leaking
the result of system_path(). We can use the same pointer
here to avoid allocating and leaking for each call.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git_exec_path: avoid Coverity warning about unfree()d result
Technically, it is correct that git_exec_path() returns a possibly
malloc()ed string returned from system_path(), and it is sometimes
not allocated. Cache the result in a static variable and make sure
that we call system_path() only once, which plugs a potential leak.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
blame: output porcelain "previous" header for each file
It's possible for content currently found in one file to
have originated in two separate files, each of which may
have been modified in some single older commit. The
--porcelain output generates an incorrect "previous" header
in this case, whereas --line-porcelain gets it right. The
problem is that the porcelain output tries to omit repeated
details of commits, and treats "previous" as a property of
the commit, when it is really a property of the blamed block
of lines.
Let's look at an example. In a case like this, you might see
this output from --line-porcelain:
The "filename" fields tell us that the two lines are from
two different files. But notice that the filename also
appears in the "previous" field, which tells us where to
start a re-blame. The second content line never appeared in
file_one at all, so we would obviously need to re-blame from
file_two (or possibly even some other file, if had just been
renamed to file_two in SOME_SHA1).
So far so good. Now here's what --porcelain looks like:
We've dropped the author and committer fields from the
second line, as they would just be repeats. But we can't
omit "filename", because it depends on the actual block of
blamed lines, not just the commit. This is handled by
emit_porcelain_details(), which will show the filename
either if it is the first mention of the commit _or_ if the
commit has multiple paths in it.
But we don't give "previous" the same handling. It's written
inside emit_one_suspect_detail(), which bails early if we've
already seen that commit. And so the output above is wrong;
a reader would assume that the correct place to re-blame
line two is from file_one, but that's obviously nonsense.
Let's treat "previous" the same as "filename", and show it
fresh whenever we know we are in a confusing case like this.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
You can already ask blame for full sha1s with "-l" or with
"--abbrev=40". But for consistency with other parts of Git,
we should support "--no-abbrev".
Worse, blame already accepts --no-abbrev, but it's totally
broken. When we see --no-abbrev, the abbrev variable is set
to 0, which is then used as a printf precision. For regular
sha1s, that means we print nothing at all (which is very
wrong). For boundary commits we decrement it to "-1", which
printf interprets as "no limit" (which is almost correct,
except it misses the 39-length magic explained in the
previous commit).
Let's detect --no-abbrev and behave as if --abbrev=40 was
given.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The blame command internally adds 1 to any requested sha1
abbreviation length, and then subtracts it when outputting a
boundary commit. This lets regular and boundary sha1s line
up visually, but it misses one corner case.
When the requested length is 40, we bump the value to 41.
But since we only have 40 characters, that's all we can show
(fortunately the truncation is done by a printf precision
field, so it never tries to read past the end of the
buffer). So a normal sha1 shows 40 hex characters, and a
boundary sha1 shows "^" plus 40 hex characters. The result
is misaligned.
The "-l" option to show long sha1s gets around this by
skipping the "abbrev" variable entirely and just always
using GIT_SHA1_HEXSZ. This avoids the "+1" issue, but it
does mean that boundary commits only have 39 characters
printed. This is somewhat odd, but it does look good
visually: the results are aligned and left-justified. The
alternative would be to allocate an extra column that would
contain either an extra space or the "^" boundary marker.
As this is by definition the human-readable view, it's
probably not that big a deal either way (and of course
--porcelain, etc, correctly produce correct 40-hex sha1s).
But for consistency, this patch teaches --abbrev=40 to
produce the same output as "-l" (always left-aligned, with
40-hex for normal sha1s, and "^" plus 39-hex for
boundaries).
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
We generate the squash commit message incrementally running
a sed script once for each commit. It parses "This is
a combination of <N> commits" from the first line of the
existing message, adds one to <N>, and uses the result as
the number of our current message.
Since f2d17068fd (i18n: rebase-interactive: mark comments of
squash for translation, 2016-06-17), the first line may be
localized, and sed uses a pretty liberal regex, looking for:
/^#.*([0-9][0-9]*)/
The "[0-9][0-9]*" tries to match double digits, but it
doesn't quite work. The first ".*" is greedy, so if you
have:
This is a combination of 10 commits.
it will eat up "This is a combination of 1", leaving "0" to
match the first "[0-9]" digit, and then skipping the
optional match of "[0-9]*".
As a result, the count resets every 10 commits, and a
15-commit squash would end up as:
# This is a combination of 5 commits.
# This is the 1st commit message:
...
# This is the commit message #2:
... and so on ..
# This is the commit message #10:
...
# This is the commit message #1:
...
# This is the commit message #2:
... etc, up to 5 ...
We can fix this by making the ".*" less greedy. Instead of
depending on ".*?" working portably, we can just limit the
match to non-digit characters, which accomplishes the same
thing.
Reported-by: Brandon Tolsch <btolsch@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 4aff646d17 (archive-zip: mark text files in archives,
2015-03-05), the zip archiver will look at the userdiff
driver to decide whether a file is text or binary. This
usually doesn't need to look any further than the attributes
themselves (e.g., "-diff", etc). But if the user defines a
custom driver like "diff=foo", we need to look at
"diff.foo.binary" in the config. Prior to this patch, we
didn't actually load it.
Signed-off-by: Jeff King <peff@peff.net> Acked-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
auto gc: don't write bitmaps for incremental repacks
When git gc --auto does an incremental repack of loose objects, we do
not expect to be able to write a bitmap; it is very likely that
objects in the new pack will have references to objects outside of the
pack. So we shouldn't try to write a bitmap, because doing so will
likely issue a warning.
This warning was making its way into gc.log. When the gc.log was
present, future auto gc runs would refuse to run.
Patch by Jeff King.
Bug report, test, and commit message by David Turner.
Signed-off-by: David Turner <dturner@twosigma.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
config.abbrev: document the new default that auto-scales
We somehow forgot to update the "default is 7" in the
documentation. Also give a way to explicitly ask the auto-scaling
by setting config.abbrev to "auto".
config.c: handle lock file in error case in git_config_rename_...
We could rely on atexit() to clean up everything, but let's be
explicit when we can. And it's good anyway because the function is
called the second time in the same process, we're in trouble.
This function should not affect the successful case because after
commit_lock_file() is called, rollback_lock_file() becomes no-op,
as long as it is initialized.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git for Windows has carried a patch that depended on internals
of MSVC runtime, but it does not work correctly with recent MSVC
runtime. A replacement was written originally for compiling
with VC++. The patch in this message is a backport of that
replacement, and it also fixes the previous attempt to make
isatty() tell that /dev/null is *not* an interactive terminal.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Tested-by: Beat Bolli <dev+git@drbeat.li> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
mingw: fix colourization on Cygwin pseudo terminals
Git only colours the output and uses pagination if isatty() returns 1.
MSYS2 and Cygwin emulate pseudo terminals via named pipes, meaning that
isatty() returns 0.
f7f90e0f4f (mingw: make isatty() recognize MSYS2's pseudo terminals
(/dev/pty*), 2016-04-27) fixed this for MSYS2 terminals, but not for
Cygwin.
The named pipes that Cygwin and MSYS2 use are very similar. MSYS2 PTY pipes
are called 'msys-*-pty*' and Cygwin uses 'cygwin-*-pty*'. This commit
modifies the existing check to allow both MSYS2 and Cygwin PTY pipes to be
identified as TTYs.
Note that pagination is still broken when running Git for Windows from
within Cygwin, as MSYS2's less.exe is spawned (and does not like to
interact with Cygwin's PTY).
This partially fixes https://github.com/git-for-windows/git/issues/267
Signed-off-by: Alan Davies <alan.n.davies@gmail.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When determining whether a handle corresponds to a *real* Win32 Console
(as opposed to, say, a character device such as /dev/null), we use the
GetConsoleOutputBufferInfo() function as a tell-tale.
However, that does not work for *input* handles associated with a
console. Let's just use the GetConsoleMode() function for input handles,
and since it does not work on output handles fall back to the previous
method for those.
This patch prepares for using is_console() instead of my previous
misguided attempt in cbb3f3c9b1 (mingw: intercept isatty() to handle
/dev/null as Git expects it, 2016-12-11) that broke everything on
Windows.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
fast-import: properly fanout notes when tree is imported
In typical uses of fast-import, trees are inherited from a parent
commit. In that case, the tree_entry for the branch looks like:
.versions[1].sha1 = $some_sha1
.tree = <tree structure loaded from $some_sha1>
However, when trees are imported, rather than inherited, that is not the
case. One can import a tree with a filemodify command, replacing the
root tree object.
e.g.
"M 040000 $some_sha1 \n"
In this case, the tree_entry for the branch looks like:
.versions[1].sha1 = $some_sha1
.tree = NULL
When adding new notes with the notemodify command, do_change_note_fanout
is called to get a notes count, and to do so, it loops over the
tree_entry->tree, but doesn't do anything when the tree is NULL.
In the latter case above, it means do_change_note_fanout thinks the tree
contains no notes, and new notes are added with no fanout.
Interestingly, do_change_note_fanout does check whether subdirectories
have a NULL .tree, in which case it uses load_tree(). Which means the
right behaviour happens when using the filemodify command to import
subdirectories.
This change makes do_change_note_fanount call load_tree() whenever the
tree_entry it is given has no tree loaded, making all cases handled
equally.
Signed-off-by: Mike Hommey <mh@glandium.org> Reviewed-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 6b4b013f18 (mailinfo: handle in-body header continuations,
2016-09-20, v2.11.0) mailinfo.c has contained new code with an
assert of the form:
assert(call_a_function(...))
The function in question, check_header, has side effects. This
means that when NDEBUG is defined during a release build the
function call is omitted entirely, the side effects do not
take place and tests (fortunately) start failing.
Since the only time that mi->inbody_header_accum is appended to is
in check_inbody_header, and appending onto a blank
mi->inbody_header_accum always happens when is_inbody_header is
true, this guarantees a prefix that causes check_header to always
return true.
Therefore replace the assert with an if !check_header + DIE
combination to reflect this.
Helped-by: Jonathan Tan <jonathantanmy@google.com> Helped-by: Jeff King <peff@peff.net> Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Kyle J. McKay <mackyle@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
mingw: consider that UNICODE_STRING::Length counts bytes
UNICODE_STRING::Length field means size of buffer in bytes[1],
despite of buffer itself being array of wchar_t. Because of that
terminating zero is placed twice as far. Fix it.
Signed-off-by: Max Kirillov <max@max630.net> Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When importing from multiple perforce paths - we may attempt to
import a changelist that contains files from two (or more) of these
depot paths. Currently, this results in multiple git commits - one
containing the changes, and the other(s) as empty commit(s). This
behavior was introduced in commit 1f90a64891 ("git-p4: reduce number
of server queries for fetches", 2015-12-19).
Reproduction Steps:
1. Have a git repo cloned from a perforce repo using multiple
depot paths (e.g. //depot/foo and //depot/bar).
2. Submit a single change to the perforce repo that makes changes
in both //depot/foo and //depot/bar.
3. Run "git p4 sync" to sync the change from #2.
Change is synced as multiple commits, one for each depot path that
was affected.
Using a set, instead of a list inside p4ChangesForPaths() ensures
that each changelist is unique to the returned list, and therefore
only a single commit is generated for each changelist.
Reported-by: James Farwell <jfarwell@vmware.com> Signed-off-by: George Vanburgh <gvanburgh@bloomberg.net> Reviewed-by: Luke Diamand <luke@diamand.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When submitting to P4, if git-p4 came across a symlinked
directory, then during the generation of the submit diff, it would
try to open it as a normal file and fail.
Spot symlinks (of any type) and output a description of the symlink
instead.
Add a test case.
Signed-off-by: Luke Diamand <luke@diamand.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t0021.15 creates files, adds them to the index, and commits them. All
this usually happens in a test run within the same second and Git cannot
know if the files have been changed between `add` and `commit`. Thus,
Git has to run the clean filter in both operations. Sometimes these
invocations spread over two different seconds and Git can infer that the
files were not changed between `add` and `commit` based on their
modification timestamp. The test would fail as it expects the filter
invocation. Remove this expectation to make the test stable.
Signed-off-by: Lars Schneider <larsxschneider@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
index-pack: skip collision check when not in repository
You can run "git index-pack path/to/foo.pack" outside of a
repository to generate an index file, or just to verify the
contents. There's no point in doing a collision check, since
we obviously do not have any objects to collide with.
The current code will blindly look in .git/objects based on
the result of setup_git_env(). That effectively gives us the
right answer (since we won't find any objects), but it's a
waste of time, and it conflicts with our desire to
eventually get rid of the "fallback to .git" behavior of
setup_git_env().
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
normalize_path_copy(): fix pushing to //server/share/dir on Windows
normalize_path_copy() is not prepared to keep the double-slash of a
//server/share/dir kind of path, but treats it like a regular POSIX
style path and transforms it to /server/share/dir.
The bug manifests when 'git push //server/share/dir master' is run,
because tmp_objdir_add_as_alternate() uses the path in normalized
form when it registers the quarantine object database via
link_alt_odb_entries(). Needless to say that the directory cannot be
accessed using the wrongly normalized path.
Fix it by skipping all of the root part, not just a potential drive
prefix. offset_1st_component takes care of this, see the
implementation in compat/mingw.c::mingw_offset_1st_component().
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Many tests want to run a command outside of any git repo;
with the nongit() function this is now a one-liner. It saves
a few lines, but more importantly, it's immediately obvious
what the code is trying to accomplish.
This doesn't convert every such case in the test suite; it
just covers those that want to do a one-off command. Other
cases, such as the ones in t4035, are part of a larger
scheme of outside-repo files, and it's less confusing for
them to stay consistent with the surrounding tests.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
index-pack: complain when --stdin is used outside of a repo
The index-pack builtin is marked as RUN_SETUP_GENTLY,
because it's perfectly fine to index a pack in the
filesystem outside of any repository. However, --stdin mode
will write the result to the object database, which does not
make sense outside of a repository. Doing so creates a bogus
".git" directory with nothing in it except the newly-created
pack and its index.
Instead, let's flag this as an error and abort.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t5000: extract nongit function to test-lib-functions.sh
This function abstracts the idea of running a command
outside of any repository (which is slightly awkward to do
because even if you make a non-repo directory, git may keep
walking up outside of the trash directory). There are
several scripts that use the same technique, so let's make
the function available for everyone.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The general status and future of gmane is unclear at this
point, but certainly it does not seem to be carrying
gmane.comp.version-control.git at all anymore. Let's point
to public-inbox.org, which seems to be the favored archive
on the list these days (and which uses message-ids in its
URLs, making the links somewhat future-proof).
Reported-by: Chiel ten Brinke <ctenbrinke@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function had only one caller when the "remove useless" was
written, but another topic will soon make heavy use of it and more
importantly the function will return different paths depending on
the value in opts.
parse-options: print "fatal:" before usage_msg_opt()
Programs may use usage_msg_opt() to print a brief message
followed by the program usage, and then exit. The message
isn't prefixed at all, though, so it doesn't match our usual
error output and is easy to overlook:
$ git clone 1 2 3
Too many arguments.
usage: git clone [<options>] [--] <repo> [<dir>]
-v, --verbose be more verbose
-q, --quiet be more quiet
--progress force progress reporting
-n, --no-checkout don't create a checkout
--bare create a bare repository
[...and so on for another 31 lines...]
It looks especially bad when the message starts with an
option, like:
When you're working on the git project, you're unlikely to
care about random bits in contrib/ (e.g., you would not want
to jump to the copy of xmalloc in the wincred credential
helper). Nobody has really complained because there are
relatively few C files in contrib.
Now that we're matching shell scripts, too, we get quite a
few more hits, especially in the obsolete contrib/examples
directory. Looking for usage() should turn up the one in
git-sh-setup, not in some long-dead version of git-clone.
Let's just exclude all of contrib. Any specific projects
there which are big enough to want tags can generate them
separately.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Makefile: match shell scripts in FIND_SOURCE_FILES
We feed FIND_SOURCE_FILES to ctags to help developers
navigate to particular functions, but we only feed C source
code. The same feature can be helpful when working with
shell scripts (especially the test suite). Modern versions
of ctags know how to parse shell scripts; we just need to
feed the filenames to it.
This patch specifically avoids including the individual test
scripts themselves. Those are unlikely to be of interest,
and there are a lot of them to process. It does pick up
test-lib.sh and test-lib-functions.sh.
Note that our negative pathspec already excludes the
individual scripts for the ls-files case, but we need to
loosen the `find` rule to match it.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
As we add to this in future commits, the formatting is going
to make it harder and harder to read. Let's write it more as
we would in a shell script, putting each logical block on
its own line.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Checking just for the unicode data files' existence is not sufficient;
we should also download them if a newer version exists on the Unicode
consortium's servers. Option -N of wget does this nicely for us.
Reviewed-by: Torsten Bögershausen <tboegi@web.de> Signed-off-by: Beat Bolli <dev+git@drbeat.li> Signed-off-by: Junio C Hamano <gitster@pobox.com>
update_unicode.sh: pin the uniset repo to a known good commit
The uniset upstream has added more commits that for example change the
hexadecimal output in '--32' mode to decimal. Let's pin the repo to a
commit that still outputs the width tables in the format we want.
Signed-off-by: Beat Bolli <dev+git@drbeat.li> Signed-off-by: Junio C Hamano <gitster@pobox.com>
update_unicode.sh: remove an unnecessary subshell level
After the move into contrib/update-unicode, we no longer create the
unicode directory to have a clean working folder. Instead, the directory
of the script is used. This means that the subshell can be removed.
Signed-off-by: Beat Bolli <dev+git@drbeat.li> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t5547-push-quarantine: run the path separator test on Windows, too
To perform the test case on Windows in a way that corresponds to the
POSIX version, inject the semicolon in a directory name.
Typically, an absolute POSIX style path, such as the one in $PWD, is
translated into a Windows style path by bash when it invokes git.exe.
However, the presence of the semicolon suppresses this translation;
but the untranslated POSIX style path is useless for git.exe.
Therefore, instead of $PWD pass the Windows style path that $(pwd)
produces.
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the space between redirection and file name.
Also remove unnecessary invocations of subshells, such as
(cd submod &&
echo X >untracked
) &&
as there is no point of having the shell for functional purposes.
In case of a single Git command use the `-C` option to let Git cd into
the directory.
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 722ff7f87 (receive-pack: quarantine objects until
pre-receive accepts, 2016-10-03) regressed pushes to
repositories with colon (or semi-colon in Windows in them)
because it adds the repository's main object directory to
GIT_ALTERNATE_OBJECT_DIRECTORIES. The receiver interprets
the colon as a delimiter, not as part of the path, and
index-pack is unable to find objects which it needs to
resolve deltas.
The previous commit introduced a quoting mechanism for the
alternates list; let's use it here to cover this case. We'll
avoid quoting when we can, though. This alternate setup is
also used when calling hooks, so it's possible that the user
may call older git implementations which don't understand
the quoting mechanism. By quoting only when necessary, this
setup will continue to work unless the user _also_ has a
repository whose path contains the delimiter.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
We read lists of alternates from objects/info/alternates
files (delimited by newline), as well as from the
GIT_ALTERNATE_OBJECT_DIRECTORIES environment variable
(delimited by colon or semi-colon, depending on the
platform).
There's no mechanism for quoting the delimiters, so it's
impossible to specify an alternate path that contains a
colon in the environment, or one that contains a newline in
a file. We've lived with that restriction for ages because
both alternates and filenames with colons are relatively
rare, and it's only a problem when the two meet. But since 722ff7f87 (receive-pack: quarantine objects until
pre-receive accepts, 2016-10-03), which builds on the
alternates system, every push causes the receiver to set
GIT_ALTERNATE_OBJECT_DIRECTORIES internally.
It would be convenient to have some way to quote the
delimiter so that we can represent arbitrary paths.
The simplest thing would be an escape character before a
quoted delimiter (e.g., "\:" as a literal colon). But that
creates a backwards compatibility problem: any path which
uses that escape character is now broken, and we've just
shifted the problem. We could choose an unlikely escape
character (e.g., something from the non-printable ASCII
range), but that's awkward to use.
Instead, let's treat names as unquoted unless they begin
with a double-quote, in which case they are interpreted via
our usual C-stylke quoting rules. This also breaks
backwards-compatibility, but in a smaller way: it only
matters if your file has a double-quote as the very _first_
character in the path (whereas an escape character is a
problem anywhere in the path). It's also consistent with
many other parts of git, which accept either a bare pathname
or a double-quoted one, and the sender can choose to quote
or not as required.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
xxdiff was using a mix of "Ctrl-<key>" and "Ctrl+<key>" hotkeys.
The dashed "-" form is not accepted by newer xxdiff versions.
Use the plus "+" form only.
Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make difftool chdir to the top-level of the repository as soon as it can
so that we can simplify how paths are handled. Replace construction of
absolute paths via string concatenation with relative paths wherever
possible. The bulk of the code no longer needs to use absolute paths.
Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The double-slash fixup on the $workdir variable was being
performed just-in-time to avoid double-slashes in symlink
targets, but the rest of the code was silently using paths with
embedded "//" in them.
A recent user-reported error message contained double-slashes.
Eliminate the issue by sanitizing inputs as soon as they arrive.
Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
difftool: fix dir-diff index creation when in a subdirectory
9ec26e7977 (difftool: fix argument handling in subdirs, 2016-07-18)
corrected how path arguments are handled in a subdirectory, but
it introduced a regression in how entries outside of the
subdirectory are handled by dir-diff.
When preparing the right-side of the diff we only include the
changed paths in the temporary area.
The left side of the diff is constructed from a temporary
index that is built from the same set of changed files, but it
was being constructed from within the subdirectory. This is a
problem because the indexed paths are toplevel-relative, and
thus they were not getting added to the index.
Teach difftool to chdir to the toplevel of the repository before
preparing its temporary indexes. This ensures that all of the
toplevel-relative paths are valid.
Add test cases to more thoroughly exercise this scenario.
Reported-by: Frank Becker <fb@mooflu.com> Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
mingw: intercept isatty() to handle /dev/null as Git expects it
When Git's source code calls isatty(), it really asks whether the
respective file descriptor is connected to an interactive terminal.
Windows' _isatty() function, however, determines whether the file
descriptor is associated with a character device. And NUL, Windows'
equivalent of /dev/null, is a character device.
Which means that for years, Git mistakenly detected an associated
interactive terminal when being run through the test suite, which
almost always redirects stdin, stdout and stderr to /dev/null.
This bug only became obvious, and painfully so, when the new
bisect--helper entered the `pu` branch and made the automatic build & test
time out because t6030 was waiting for an answer.
What was intended was perhaps "... plumbing does for you" ("you" added), but
simply omitting the word "for" is more terse and gets the intended point across
just as well, if not more so.
I originally went with the approach of writing "for you", but Junio C
Hamano suggested this approach instead.
Signed-off-by: Kristoffer Haugsbakk <kristoffer.haugsbakk@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
By adding the word "just", which might have been accidentally omitted.
Adding the word "just" makes it clear that the point is to *not* do an
octopus merge simply because you *can* do it. In other words, you
should have a reason for doing it beyond simply having two (seemingly)
independent commits that you need to merge into another branch, since
it's not always the best approach.
The previous sentence made it look more like it was trying to say that
you shouldn't do an octopus merge *because* you can do an octopus merge.
Although this interpretation doesn't make sense and the rest of the
paragraph makes the intended meaning clear, this adjustment should make
the intent of the sentence more immediately clear to the reader.
Signed-off-by: Kristoffer Haugsbakk <kristoffer.haugsbakk@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
In contrast to "git am --abort", a sequencer abort did not check
whether the current HEAD is the one that is expected. This can lead
to loss of work (when not spotted and resolved using reflog before
the garbage collector chimes in).
This behavior is now changed by mimicking "git am --abort". The
abortion is done but HEAD is not changed when the current HEAD is
not the expected HEAD.
A new file "sequencer/abort-safety" is added to save the expected
HEAD.
The new behavior is only active when --abort is invoked on multiple
picks. The problem does not occur for the single-pick case because
it is handled differently.
Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
commit: remove 'Clever' message for --only --amend
The behavior is now documented; more importantly, rewarding the user
with a "Wow, you are clever" praise afterwards is not an effective
way to advertise the feature--at that point the user already knows.
Signed-off-by: Andreas Krey <a.krey@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are two different places where the --no-abbrev option is parsed,
and two different places where SHA-1s are abbreviated. We normally parse
--no-abbrev with setup_revisions(), but in the no-index case, "git diff"
calls diff_opt_parse() directly, and diff_opt_parse() didn't handle
--no-abbrev until now. (It did handle --abbrev, however.) We normally
abbreviate SHA-1s with find_unique_abbrev(), but commit 4f03666 ("diff:
handle sha1 abbreviations outside of repository, 2016-10-20) recently
introduced a special case when you run "git diff" outside of a
repository.
setup_revisions() does also call diff_opt_parse(), but not for --abbrev
or --no-abbrev, which it handles itself. setup_revisions() sets
rev_info->abbrev, and later copies that to diff_options->abbrev. It
handles --no-abbrev by setting abbrev to zero. (This change doesn't
touch that.)
Setting abbrev to zero was broken in the outside-of-a-repository special
case, which until now resulted in a truly zero-length SHA-1, rather than
taking zero to mean do not abbreviate. The only way to trigger this bug,
however, was by running "git diff --raw" without either the --abbrev or
--no-abbrev options, because 1) without --raw it doesn't respect abbrev
(which is bizarre, but has been that way forever), 2) we silently clamp
--abbrev=0 to MINIMUM_ABBREV, and 3) --no-abbrev wasn't handled until
now.
The outside-of-a-repository case is one of three no-index cases. The
other two are when one of the files you're comparing is outside of the
repository you're in, and the --no-index option.
Signed-off-by: Jack Bates <jack@nottheoilrig.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
difftool: fix dir-diff index creation when in a subdirectory
9ec26e7977 (difftool: fix argument handling in subdirs, 2016-07-18)
corrected how path arguments are handled in a subdirectory, but
it introduced a regression in how entries outside of the
subdirectory are handled by dir-diff.
When preparing the right-side of the diff we only include the
changed paths in the temporary area.
The left side of the diff is constructed from a temporary
index that is built from the same set of changed files, but it
was being constructed from within the subdirectory. This is a
problem because the indexed paths are toplevel-relative, and
thus they were not getting added to the index.
Teach difftool to chdir to the toplevel of the repository before
preparing its temporary indexes. This ensures that all of the
toplevel-relative paths are valid.
Add test cases to more thoroughly exercise this scenario.
Reported-by: Frank Becker <fb@mooflu.com> Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
am: change safe_to_abort()'s not rewinding error into a warning
The error message tells the user that something went terribly wrong
and the --abort could not be performed. But the --abort is performed,
only without rewinding. By simply changing the error into a warning,
we indicate the user that she must not try something like
"git am --abort --force", instead she just has to check the HEAD.
Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some context before we talk about the removed code.
This paint_down() is part of step 6 of 58babff (shallow.c: the 8 steps
to select new commits for .git/shallow - 2013-12-05). When we fetch from
a shallow repository, we need to know if one of the new/updated refs
needs new "shallow commits" in .git/shallow (because we don't have
enough history of those refs) and which one.
The question at step 6 is, what (new) shallow commits are required in
other to maintain reachability throughout the repository _without_
cutting our history short? To answer, we mark all commits reachable from
existing refs with UNINTERESTING ("rev-list --not --all"), mark shallow
commits with BOTTOM, then for each new/updated refs, walk through the
commit graph until we either hit UNINTERESTING or BOTTOM, marking the
ref on the commit as we walk.
After all the walking is done, we check the new shallow commits. If we
have not seen any new ref marked on a new shallow commit, we know all
new/updated refs are reachable using just our history and .git/shallow.
The shallow commit in question is not needed and can be thrown away.
So, the code.
The loop here (to walk through commits) is basically
1. get one commit from the queue
2. ignore if it's SEEN or UNINTERESTING
3. mark it
4. go through all the parents and..
5a. mark it if it's never marked before
5b. put it back in the queue
What we do in this patch is drop step 5a because it is not
necessary. The commit being marked at 5a is put back on the queue, and
will be marked at step 3 at the next iteration. The only case it will
not be marked is when the commit is already marked UNINTERESTING (5a
does not check this), which will be ignored at step 2.
But we don't care about refs marking on UNINTERESTING. We care about the
marking on _shallow commits_ that are not reachable from our current
history (and having UNINTERESTING on it means it's reachable). So it's
ok for an UNINTERESTING not to be ref-marked.
Reported-by: Rasmus Villemoes <rv@rasmusvillemoes.dk> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
First of all, 1 << 31 is technically undefined behaviour, so let's just
use an unsigned literal.
If i is 'signed int' and gcc doesn't know that i is positive, gcc
generates code to compute the C99-mandated values of "i / 32" and "i %
32", which is a lot more complicated than simple a simple shifts/mask.
The only caller of paint_down actually passes an "unsigned int" value,
but the prototype of paint_down causes (completely well-defined)
conversion to signed int, and gcc has no way of knowing that the
converted value is non-negative. Just make the id parameter unsigned.
In update_refstatus, the change in generated code is much smaller,
presumably because gcc is smart enough to see that i starts as 0 and is
only incremented, so it is allowed (per the UD of signed overflow) to
assume that i is always non-negative. But let's just help less smart
compilers generate good code anyway.
Signed-off-by: Rasmus Villemoes <rv@rasmusvillemoes.dk> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The expression info->free+size is technically undefined behaviour in
exactly the case we want to test for. Moreover, the compiler is likely
to translate the expression to
where there's at least a theoretical chance that the LHS could wrap
around 0, giving a false negative.
This might as well be written using pointer subtraction avoiding these
issues.
Signed-off-by: Rasmus Villemoes <rv@rasmusvillemoes.dk> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
paint_alloc() allocates a big block of memory and splits it into
smaller, fixed size, chunks of memory whenever it's called. Each chunk
contains enough bits to present all "new refs" [1] in a fetch from a
shallow repository.
We do not check if the new "big block" is smaller than the requested
memory chunk though. If it happens, we'll happily pass back a memory
region smaller than expected. Which will lead to problems eventually.
A normal fetch may add/update a dozen new refs. Let's stay on the
"reasonably extreme" side and say we need 16k refs (or bits from
paint_alloc's perspective). Each chunk of memory would be 2k, much
smaller than the memory pool (512k).
So, normally, the under-allocation situation should never happen. A bad
guy, however, could make a fetch that adds more than 4m new/updated refs
to this code which results in a memory chunk larger than pool size.
Check this case and abort.
Noticed-by: Rasmus Villemoes <rv@rasmusvillemoes.dk> Reviewed-by: Jeff King <peff@peff.net>
[1] Details are in commit message of 58babff (shallow.c: the 8 steps to
select new commits for .git/shallow - 2013-12-05), step 6.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
shallow.c: stop abusing COMMIT_SLAB_SIZE for paint_info's memory pools
We need to allocate a "big" block of memory in paint_alloc(). The exact
size does not really matter. But the pool size has no relation with
commit-slab. Stop using that macro here.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
shallow.c: rename fields in paint_info to better express their purposes
paint_alloc() is basically malloc(), tuned for allocating a fixed number
of bits on every call without worrying about freeing any individual
allocation since all will be freed at the end. It does it by allocating
a big block of memory every time it runs out of "free memory". "slab" is
a poor choice of name, at least poorer than "pool".
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>