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The purpose of edge commits is to let pack-objects know what objects
it can use as base, but does not need to include in the thin pack
because the other side is supposed to already have them. So far we
mark uninteresting parents of interesting commits as edges. But even
an unrelated uninteresting commit (that the other side has) may
become a good base for pack-objects and help produce more efficient
packs.
This is especially true for shallow clone, when the client issues a
fetch with a depth smaller or equal to the number of commits the
server is ahead of the client. For example, in this commit history
the client has up to "A" and the server has up to "B":
-------A---B
have--^ ^
/
want--+
If depth 1 is requested, the commit list to send to the client
includes only B. The way m_e_u is working, it checks if parent
commits of B are uninteresting, if so mark them as edges. Due to
shallow effect, commit B is grafted to have no parents and the
revision walker never sees A as the parent of B. In fact it marks no
edges at all in this simple case and sends everything B has to the
client even if it could have excluded what A and also the client
already have.
In a slightly different case where A is not a direct parent of B
(iow there are commits in between A and B), marking A as an edge can
still save some because B may still have stuff from the far ancestor
A.
There is another case from the earlier patch, when we deepen a ref
from C->E to A->E:
---A---B C---D---E
want--^ ^ ^
shallow-+ /
have-------+
In this case we need to send A and B to the client, and C (i.e. the
current shallow point that the client informs the server) is a very
good base because it's closet to A and B. Normal m_e_u won't recognize
C as an edge because it only looks back to parents (i.e. A<-B) not the
opposite way B->C even if C is already marked as uninteresting commit
by the previous patch.
This patch includes all uninteresting commits from command line as
edges and lets pack-objects decide what's best to do. The upside is we
have better chance of producing better packs in certain cases. The
downside is we may need to process some extra objects on the server
side.
For the shallow case on git.git, when the client is 5 commits behind
and does "fetch --depth=3", the result pack is 99.26 KiB instead of
4.92 MiB.
Reported-and-analyzed-by: Matthijs Kooijman <matthijs@stdin.nl>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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mark_edges_uninteresting() is always called with this form
mark_edges_uninteresting(revs->commits, revs, ...);
Remove the first argument and let mark_edges_uninteresting figure that
out by itself. It helps answer the question "are this commit list and
revs related in any way?" when looking at mark_edges_uninteresting
implementation.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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upload-pack has a special revision walking code for shallow
recipients. It works almost like the similar code in pack-objects
except:
1. in upload-pack, graft points could be added for deepening;
2. also when the repository is deepened, the shallow point will be
moved further away from the tip, but the old shallow point will be
marked as edge to produce more efficient packs. See 6523078 (make
shallow repository deepening more network efficient - 2009-09-03).
Pass the file to pack-objects via --shallow-file. This will override
$GIT_DIR/shallow and give pack-objects the exact repository shape
that upload-pack has.
mark edge commits by revision command arguments. Even if old shallow
points are passed as "--not" revisions as in this patch, they will not
be picked up by mark_edges_uninteresting() because this function looks
up to parents for edges, while in this case the edge is the children,
in the opposite direction. This will be fixed in an later patch when
all given uninteresting commits are marked as edges.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This function is like setup_alternate_shallow() except that it does
not lock $GIT_DIR/shallow. It is supposed to be used when a program
generates temporary shallow for use by another program, then throw
the shallow file away.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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for_each_commit_graft() goes through all graft points, and shallow
boundaries are just one special kind of grafting.
If $GIT_DIR/shallow and $GIT_DIR/info/grafts are both present,
write_shallow_commits() may catch both sets, accidentally turning
some graft points to shallow boundaries. Don't do that.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This reverts commit cdfd94837b27c220f70f032b596ea993d195488f, as it
does not just apply to "@" (and forms with modifiers like @{u}
applied to it), but also affects e.g. "refs/heads/@/foo", which it
shouldn't.
The basic idea of giving a short-hand might be good, and the topic
can be retried later, but let's revert to avoid affecting existing
use cases for now for the upcoming release.
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This reverts commit a73653130edd6a8977106d45a8092c09040f9132, as it
has been reported that "ls-files --killed" is too time-consuming in
a deep directory with too many untracked crufts (e.g. $HOME/.git
tracking only a few files).
We'd need to revisit it later but "ls-files --killed" needs to be
optimized before it happens.
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* git://github.com/git-l10n/git-po:
l10n: Add reference for french translation team
l10n: fr.po: 821/2112 messages translated
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* sb/mailmap-updates:
.mailmap: Combine more (name, email) to individual persons
.mailmap: update long-lost friends with multiple defunct addresses
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Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A handful of past contributors are recorded with multiple e-mail
addresses, all of which are undeliverable. With a lot of help from
Jonathan, we located all of them except for one person, and a pair
of addresses we suspect belong to a single person but we are not
certain.
Update the found ones with their currently preferred address, and
use the last known address to consolidate contributions by the lost
one.
Helped-by: Stefan Beller <stefanbeller@googlemail.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Jean-Noel Avila <jn.avila@free.fr>
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Trying to focus on most useful phrases.
Signed-off-by: Jean-Noel Avila <jn.avila@free.fr>
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* maint:
parse-options: fix clang opterror() -Wunused-value warning
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* 'master' of git://github.com/git-l10n/git-po:
l10n: de.po: translate 5 messages
l10n: de.po: translate 99 new messages
l10n: de.po: switch from pure German to German+English
l10n: de.po: Fix a typo
l10n: Update Swedish translation (2135t0f0u)
l10n: zh_CN.po: translate 5 messages (2135t0f0u)
l10n: vi.po(2135t): v1.8.4 round 2
l10n: git.pot: v1.8.4 round 2 (5 new, 3 removed)
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* jk/submodule-subdirectory-ok:
t/t7407: fix two typos in submodule tests
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* sb/mailmap-updates:
.mailmap: fixup entries
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This patch adds no new names, but fixes the mistakes I made in the previous
commits. (94b410bba8, f4f49e225, c07a6bc57, 2013-07-12, .mailmap: Map
email addresses to names).
These mistakes are double white spaces between name and surname,
different capitalization in email address, or just the email address set
as name.
Also I forgot to include James Knight to the mailmap file.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In t/t7407-submodule-foreach.sh there is a typo in one of the
path names given for a test step. The correct path is
nested1/nested2/.git, but nested1/nested1/nested2/.git is
given instead. The typo is hidden because this line also
accidentally omits the && chain operator. The omitted chain
also means the return values of all the previous commands in
this test are also being ignored.
Fix the path and add the chain operator so the entire test
sequence can be properly validated.
Signed-off-by: Phil Hord <hordp@cisco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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a469a1019352b8ef (silence some -Wuninitialized false positives;
2012-12-15) triggered "unused value" warnings when the return value of
opterror() and several other error-related functions was not used.
5ded807f7c0be10e (fix clang -Wunused-value warnings for error functions;
2013-01-16) applied a fix by adding #if !defined(__clang__) in cache.h
and git-compat-util.h, but misspelled it as #if !defined(clang) in
parse-options.h. Fix this.
This mistake went unnoticed because existing callers of opterror()
utilize its return value. 1158826394e162c5 (parse-options: add
OPT_CMDMODE(); 2013-07-30), however, adds a new invocation of opterror()
which ignores the return value, thus triggering the "unused value"
warning.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Translate 5 new messages came from git.pot update in b8ecf23
(l10n: git.pot: v1.8.4 round 2 (5 new, 3 removed)).
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
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Translate 99 new messages came from git.pot update in
28b3cff (l10n: git.pot: v1.8.4 round 1 (99 new, 46 removed)).
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Acked-by: Thomas Rast <trast@inf.ethz.ch>
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This is with mostly minor documentation and test updates, nothing
spectacular except for removal of funky lstat(2) emulation on Cygwin.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This switches the translation from pure German to German+English.
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Acked-by: Thomas Rast <trast@inf.ethz.ch>
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Signed-off-by: Wieland Hoffmann <themineo@gmail.com>
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Fix some incorrect translations in existing messages while at it.
Signed-off-by: Peter Krefting <peter@softwolves.pp.se>
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Translate 5 new messages came from git.pot update in b8ecf23
(l10n: git.pot: v1.8.4 round 2 (5 new, 3 removed)).
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
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Signed-off-by: Tran Ngoc Quan <vnwildman@gmail.com>
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Generate po/git.pot from v1.8.4-rc1-21-gfb56570 for git v1.8.4
l10n round 2.
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
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* maint:
fix typo in documentation of git-svn
Documentation/rev-list-options: add missing word in --*-parents
log doc: the argument to --encoding is not optional
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* es/blame-L-breakage:
t8001, t8002: fix "blame -L :literal" test on NetBSD
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Sub-test 42 of t8001 and t8002 ("blame -L :literal") fails on NetBSD
with the following verbose output:
git annotate -L:main hello.c
Author F (expected 4, attributed 3) bad
Author G (expected 1, attributed 1) good
This is not caused by different behaviour of git blame or annotate on
that platform, but by different test input, in turn caused by a sed
command that forgets to add a newline on NetBSD. Here's the diff of the
commit that adds "goodbye" to hello.c, for Linux:
@@ -1,4 +1,5 @@
int main(int argc, const char *argv[])
{
puts("hello");
+ puts("goodbye");
}
We see that it adds an extra TAB, but that's not a problem. Here's the
same on NetBSD:
@@ -1,4 +1,4 @@
int main(int argc, const char *argv[])
{
puts("hello");
-}
+ puts("goodbye");}
It also adds an extra TAB, but it is missing the newline character
after the semicolon.
The following patch gets rid of the extra TAB at the beginning, but
more importantly adds the missing newline at the end in a (hopefully)
portable way, mentioned in http://sed.sourceforge.net/sedfaq4.html.
The diff becomes this, on both Linux and NetBSD:
@@ -1,4 +1,5 @@
int main(int argc, const char *argv[])
{
puts("hello");
+ puts("goodbye");
}
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* git://github.com/git-l10n/git-po:
l10n: zh_CN.po: translate 99 messages (2133t0f0u)
l10n: vi.po (2133t)
l10n: git.pot: v1.8.4 round 1 (99 new, 46 removed)
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* sb/mailmap-updates:
.mailmap: Multiple addresses of Michael S. Tsirkin
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* dn/test-reject-utf-16:
t3900: test rejecting log message with NULs correctly
Add missing test file for UTF-16.
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* bc/commit-invalid-utf8:
commit: typofix for xxFFF[EF] check
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We wanted to catch all codepoints that ends with FFFE and FFFF,
not with 0FFFE and 0FFFF.
Noticed and corrected by Peter Krefting.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It is not like that our longer term desire is to someday start
accept log messages with NULs in them, so it is wrong to mark a test
that demonstrates "git commit" that correctly fails given such an
input as "expect-failure". "git commit" should fail today, and it
should fail the same way in the future given a message with NUL in it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The test file that the UTF-16 rejection test looks for is missing, but this went
unnoticed because the test is expected to fail anyway; as a consequence, the
test fails because the file containing the commit message is missing, and not
because the test file contains a NUL byte. Fix this by including a sample text
file containing a commit message encoded in UTF-16.
Signed-off-by: Brian M. Carlson <sandals@crustytoothpaste.net>
Tested-by: Duy Nguyen <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Felix Gruber <felgru@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A commit has "parent commits" or "parents", not "commits".
Signed-off-by: Torstein Hegge <hegge@resisty.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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$ git log --encoding
fatal: Option '--encoding' requires a value
$ git rev-list --encoding
fatal: Option '--encoding' requires a value
The argument to --encoding has always been mandatory. Unfortunately
manpages like git-rev-list(1), git-log(1), and git-show(1) have
described the option's syntax as "--encoding[=<encoding>]" since it
was first documented. Clarify by removing the extra brackets.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Translate 99 new messages came from git.pot update in 28b3cff
(l10n: git.pot: v1.8.4 round 1 (99 new, 46 removed)).
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
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Cygwin port added a "not quite correct but a lot faster and good
enough for many lstat() calls that are only used to see if the
working tree entity matches the index entry" lstat() emulation some
time ago, and it started biting us in places. This removes it and
uses the standard lstat() that comes with Cygwin.
Recent topic that uses lstat on packed-refs file is broken when
this cheating lstat is used, and this is a simplest fix that is
also the cleanest direction to go in the long run.
* rj/cygwin-clarify-use-of-cheating-lstat:
cygwin: Remove the Win32 l/stat() implementation
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* jk/cat-file-batch-optim:
Revert "cat-file: split --batch input lines on whitespace"
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This reverts commit c334b87b30c1464a1ab563fe1fb8de5eaf0e5bac; the
update assumed that people only used the command to read from
"rev-list --objects" output, whose lines begin with a 40-hex object
name followed by a whitespace, but it turns out that scripts feed
random extended SHA-1 expressions (e.g. "HEAD:$pathname") in which
a whitespace has to be kept.
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Nguyễn Thái Ngọc Duy
Junio C Hamano
Stefan Beller
Matthieu Moy
Jean-Noel Avila
Phil Hord
Eric Sunshine
Ralf Thielow
Wieland Hoffmann
Peter Krefting
Jiang Xin
Tran Ngoc Quan
René Scharfe
Brian M. Carlson
Felix Gruber
Torstein Hegge
Jonathan Nieder