Give an example on how to bisect when older revisions need a hot-fix to
build, run or test. Triggered by the binutils/kernel issue at
http://thread.gmane.org/gmane.comp.gnu.binutils/52601/focus=1112779
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Streamline the presentation of "bisect run" by removing one example
which does not introduce new concepts.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* sp/maint-fd-limit:
sha1_file.c: Don't retain open fds on small packs
mingw: add minimum getrlimit() compatibility stub
Limit file descriptors used by packs
* 'jk/doc-credits' of git://github.com/peff/git:
docs: point git.txt author credits to git-scm.com
doc: add missing git footers
doc: drop author/documentation sections from most pages
Variables from the inherited environment that are meaningful to git
can break tests in undesirable ways. For example,
GIT_PAGER=more sh t5400-send-pack.sh -v -i
hangs. So unset all environment variables in the GIT_ namespace in
test-lib, with a few exceptions:
- GIT_TRACE* are useful for tracking down bugs exhibited by a failing
test;
- GIT_DEBUG* are GIT_TRACE variables by another name, practically
speaking. They should probably be tweaked to follow the
GIT_TRACE_foo scheme and use trace_printf machinery some time.
- GIT_USE_LOOKUP from v1.5.6-rc0~134^2~1 (sha1-lookup: more memory
efficient search in sorted list of SHA-1, 2007-12-29) is about
trying an alternate implementation strategy rather than changing
semantics and it can be useful to compare performance with and
without it set.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Now that test-lib sets $HOME to protect against pollution from user
settings, GIT_CONFIG_NOGLOBAL is not needed for use by the test
suite any more. And as luck would have it, a quick code search
reveals no other users in the wild.
This patch does not affect GIT_CONFIG_NOSYSTEM, which is still
needed.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
test-lib sets $HOME to protect against pollution from user settings,
so setting GIT_ATTR_NOGLOBAL would be redundant. Simplify by
eliminating support for that environment variable altogether.
GIT_ATTR_NOGLOBAL was introduced in v1.7.4-rc0~208^2 (Add global and
system-wide gitattributes, 2010-09-01) as an undocumented feature for
use by the test suite. It never ended up being used (neither within
git.git nor in other projects).
This patch does not affect GIT_ATTR_NOSYSTEM, which should still be
useful.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Set GIT_ATTR_NOSYSTEM in test-lib to make tests more reliable in two
ways:
- an invalid GIT_ATTR_NOSYSTEM setting should not cause tests to fail
with "fatal: bad config value for 'GIT_ATTR_NOSYSTEM'".
- /etc/gitattributes should not change the outcome of tests.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Improved-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
After v0.99.7~99 (Retire support for old environment variables,
2005-09-09), there is no more need to unset a stray AUTHOR_NAME
variable that might have entered the test environment.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the client requests both multi_ack_detailed and no-done then
upload-pack is free to immediately send a PACK following its first
'ACK %s ready' message. The upload-pack response actually winds
up being:
ACK %s common
... (maybe more) ...
ACK %s ready
NAK
ACK %s
PACK.... the pack stream ....
For smart HTTP connections this saves one HTTP RPC, reducing
the overall latency for a trivial fetch. For git:// and ssh://
a no-done option slightly reduces latency by removing one
server->client->server round-trip at the end of the common
ancestor negotiation.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If enabled on the connection "multi_ack_detailed no-done" as a
pair allows the remote upload-pack process to send a PACK down
to the client as soon as a "ACK %s ready" message was also sent.
Over git:// and ssh:// where a bi-directional stream is in place
this has very little difference over the classical version that
waits for the client to send a "done\n" line by itself. It does
slightly reduce the latency involved to start the pack stream as
there is one less round-trip from client->server required.
Over smart HTTP this avoids needing to send a final RPC that has
all of the prior common objects. Instead the server is able to
return a pack as soon as its ready to. For many common users the
smart HTTP fetch is now just 2 requests: GET .../info/refs, and
a POST .../git-upload-pack to not only negotiate but also receive
the pack stream. Only users who have more than 32 local unshared
commits with the remote will need additional requests to negotiate
a common merge base.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If a client is merely following the remote (and has not made any
new commits itself), all "have %s" lines sent by the client will be
common to the server. As all lines are common upload-pack never
calls ok_to_give_up() and does not compute if it has a good cut
point in the commit graph.
Without this computation the following client is going to send all
tagged commits, as these were determined to be COMMON_REF during the
initial advertisement, but the client does not parse their history
to transitively pass the COMMON flag and empty its queue of commits.
For git.git with 339 commit tags, it takes clients 11 rounds of
negotation to fully send all tagged commits and exhaust its queue
of things to send as common. This is pretty slow for a client that
has not done any local development activity.
Force computing ok_to_give_up() and send "ACK %s ready" at the end
of the current round if this round only contained common objects
and ok_to_give_up() was therefore not called. This may allow the
client to break early, avoiding transmission of the COMMON_REFs.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If multi_ack_detailed was selected in the protocol capabilities
(both client and server are >= Git 1.6.6) the upload-pack side will
send "ACK %s ready" when it knows how to safely cut the graph and
produce a reasonable pack for the want list that was already sent
on the connection.
Upon receiving "ACK %s ready" there is no point in looking at
the remaining commits inside of rev_list. Sending additional
"have %s" lines to the remote will not construct a smaller pack.
It is unlikely a commit older than the current cut point will have
a better delta base than the cut point itself has.
The original design of this code had fetch-pack empty rev_list by
marking a commit and its transitive ancestors COMMON whenever the
remote side said "ACK %s {continue,common}" and skipping over any
already COMMON commits during get_rev(). This approach does not
work when most of rev_list is actually COMMON_REF, commits that
are pointed to by a reference on the remote, which exist locally,
and which have not yet been sent to the remote as a "have %s" line.
Most of the common references are tags in the ref/tags namespace,
using points in the commit graph that are more than 1 commit apart.
In git.git itself, this is currently 340 tags, 339 of which point to
commits in the commit graph. fetch-pack pushes all of these into
rev_list, but is unable to mark them COMMON and discard during a
remote's "ACK %s {continue,common}" because it does not parse through
the entire parent chain. Not parsing the entire parent chain is
an optimization to avoid walking back to the roots of the repository.
Assuming the client is only following the remote (and does not make
its own local commits), the client needs 11 rounds to spin through
the entire list of tags (32 commits per round, ceil(339/32) == 11).
Unfortunately the server knows on the first "have %s" line that
it can produce a good pack, and does not need to see the remaining
320 tags in the other 10 rounds.
Over git:// and ssh:// this isn't as bad as it sounds, the client is
only transmitting an extra 16,000 bytes that it doesn't need to send.
Over smart HTTP, the client must do an additional 10 HTTP POST
requests, each of which incurs round-trip latency, and must upload
the entire state vector of all known common objects. On the final
POST request, this is 16 KiB worth of data.
Fix all of this by clearing rev_list as soon as the remote side
says it can construct a pack.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rev-list --first-parent --boundary $commit^..$commit" segfaults on a
merge commit since 8d2dfc4 (process_{tree,blob}: show objects without
buffering, 2009-04-10), as it tried to dereference a commit that was
discarded as UNINTERESTING without being parsed (hence lacking "tree").
Signed-off-by: Junio C Hamano <gitster@pobox.com>
libcurl may choose to try and use Expect: 100-continue for
any type of POST, not just a Transfer: chunked-encoding type.
Force it to disable this feature, as not all proxy servers support
100-continue and leaving it enabled can cause 1 second stalls during
the negotiation phase of fetch-pack/upload-pack.
In ("206b099d26 smart-http: Don't use Expect: 100-Continue") we
tried to disable this for only large POST bodies, but it should be
disabled for every POST body.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This change makes it clearer that the change to the history effected by
executing 'git rebase master' while on 'topic' branch, and by executing
'git rebase master topic' on any branch, will be the same; the implicit
checkout of the second form will remain after the rebase exits.
Signed-off-by: Drew Northup <drew.northup@maine.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
7914053 (Remove unused object-ref code, 2008-02-25) removed all uses of
the structure from the code, but forgot to remove the type definition
itself.
Signed-off-by: Jakob Pfender <jpfender@elegosoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git status shows modified paths relative to current directory, so it's
possible to copy&paste them directly, even if you're in a subdirectory.
But "git stash apply" always shows status from root of git repository.
This is misleading because you can't use the paths without modifications.
This is caused by changing directory to root of repository at the
beginning of git stash.
This patch makes git stash show status relative to current directory.
Instead of removing the "cd to toplevel", which would affect whole
script and might have other side-effects, the fix is to change directory
temporarily back to original dir just before displaying status.
Signed-off-by: Piotr Krukowiecki <piotr.krukowiecki@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Cloning a p4 depot by default generates a single commit. The use
of the "@all" revision specifier instead tells git-p4 to import
all commits. Check to make sure both these invocations work as
expected.
Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
e32e00d (git-p4: better message for "git-p4 sync" when not cloned,
2011-02-19) broke the use of the "@all" revision specifier, e.g.,
git-p4 clone //depot/xxx@all
Fix it as per Tor Arvid's quick patch.
Signed-off-by: Pete Wyckoff <pw@padd.com>
Reported-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Based-on-patch-by: Tor Arvid Lund <torarvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There is a nice shortlog-ish output of the authors there. We
also point people directly to shortlog, but of course they
might be reading the documentation online or from a binary
package of git.
The default of 7 comes from fairly early in git development, when
seven hex digits was a lot (it covers about 250+ million hash
values). Back then I thought that 65k revisions was a lot (it was what
we were about to hit in BK), and each revision tends to be about 5-10
new objects or so, so a million objects was a big number.
These days, the kernel isn't even the largest git project, and even
the kernel has about 220k revisions (_much_ bigger than the BK tree
ever was) and we are approaching two million objects. At that point,
seven hex digits is still unique for a lot of them, but when we're
talking about just two orders of magnitude difference between number
of objects and the hash size, there _will_ be collisions in truncated
hash values. It's no longer even close to unrealistic - it happens all
the time.
We should both increase the default abbrev that was unrealistically
small, _and_ add a way for people to set their own default per-project
in the git config file.
This is the first step to first make it configurable; the default of 7
is not raised yet.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The point of these sections is generally to:
1. Give credit where it is due.
2. Give the reader an idea of where to ask questions or
file bug reports.
But they don't do a good job of either case. For (1), they
are out of date and incomplete. A much more accurate answer
can be gotten through shortlog or blame. For (2), the
correct contact point is generally git@vger, and even if you
wanted to cc the contact point, the out-of-date and
incomplete fields mean you're likely sending to somebody
useless.
So let's drop the fields entirely from all manpages except
git(1) itself. We already point people to the mailing list
for bug reports there, and we can update the Authors section
to give credit to the major contributors and point to
shortlog and blame for more information.
Each page has a "This is part of git" footer, so people can
follow that to the main git manpage.
This reverts commit 72a5b561fc, as adding
fixed number of hexdigits more than necessary to make one object name
locally unique does not help in futureproofing the uniqueness of names
we generate today.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While doing a final sanity check before merging a topic Bsomething, it
is a good idea to review what damage Bsomething branch would make, by
running:
$ git diff ...Bsomething
Unfortunately, our completion script for 'git diff' doesn't offer
anything after '...'. This is because 'git diff's completion function
invokes __git_complete_file() for non-option arguments to complete the
'<tree>:<path>' extended SHA-1 notation, but this helper function
doesn't support refs after '...' or '..'. Completion of refs after
'...' or '..' is supported by the __git_complete_revlist() helper
function, but that doesn't support '<tree>:<path>'.
To support both '...<ref>' and '<tree>:<path>' notations for 'git
diff', this patch, instead of adding yet another helper function,
joins __git_complete_file() and __git_complete_revlist() into the new
common function __git_complete_revlist_file(). The old helper
functions __git_complete_file() and __git_complete_revlist() are
changed to be a direct wrapper around the new
__git_complete_revlist_file(), because they might be used in
user-supplied completion scripts and we don't want to break them.
This change will cause some wrong suggestions for other commands which
use __git_complete_file() ('git diff' and friends) or
__git_complete_revlist() ('git log' and friends), e.g. 'git diff
...master:Doc<TAB>' and 'git log master:Doc<TAB>' will complete the
path to 'Documentation/', although neither commands make any sense.
However, both of these were actively wrong to begin with as soon as
the user entered the ':', so there is no real harm done.
Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, commit marks (left, right, boundary, cherry) are output right
before the commit sha1, which makes it difficult to copy sha1s. Sample
output for "git log --oneline --cherry":
=049c269 t6007: test rev-list --cherry
Change this to
= 049c269 t6007: test rev-list --cherry
which matches exactly the current output of "git log --graph".
Leave "git rev-list" output as is (no space) so that they do not break.
Adjust "git-svn" which uses "git log --pretty=raw --boundary".
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is in "make distclean" and not "make clean" to avoid needlessly
changing the POT-Creation-Date in the following scenario:
make clean; # cleaning up after an old build
git pull
make pot; # regenerate po template if necessary
msgmerge po/my_language.po po/git.pot
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add rules to generate a template (po/git.pot) listing messages marked
for translation in the C portion of git.
To get started translating, just run "make pot".
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The Q_ function translates a string representing some pharse with an
alternative plural form and uses the 'count' argument to choose which
form to return. Use of Q_ solves the "%d noun(s)" problem in a way
that is portable to languages outside the Germanic and Romance
families.
In English, the semantics of Q_(sing, plur, count) are roughly
equivalent to
count == 1 ? _(sing) : _(plur)
while in other languages there can be more variants (count == 0; more
random-looking rules based on the historical pronunciation of the
number). Behind the scenes, the singular form is used to look up a
family of translations and the plural form is ignored unless no
translation is available.
Define such a Q_ in gettext.h with the English semantics so C code can
start using it to mark phrases with a count for translation.
The name "Q_" is taken from subversion and stands for "quantity".
Many projects just use ngettext directly without a wrapper analogous
to _; we should not do so because git's gettext.h is meant not to
conflict with system headers that might include libintl.h.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* so/submodule-no-update-first-time:
t7406: "git submodule update {--merge|--rebase]" with new submodules
submodule: no [--merge|--rebase] when newly cloned
Match the order of the description to the one in which they get applied:
commit limiting
commit ordering
commit formatting
diff options
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
