"git clone -s/-l" is a filesystem level copy and does not offer any
protection against source repository being corrupt. While the
connectivity validation checks commits and trees being readable, it
made the otherwise instantaneous local modes of clone much more
expensive, without protecting blob data from bitflips.
* jk/maint-clone-shared-no-connectivity-validation:
clone: drop connectivity check for local clones
Pushing to repositories with many refs employed O(m*n) algorithm
where n is the number of refs on the receiving end.
* bc/push-match-many-refs:
remote.c: avoid O(m*n) behavior in match_push_refs
"git rebase [-i]" used to leave just "rebase" as its reflog message
for some operations. This rewords them to be more informative.
* rr/rebase-reflog-message-reword:
rebase -i: use a better reflog message
rebase: use a better reflog message
All surrounding examples are typeset as monospaced text. Follow suit.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Acked-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git apply" parsed patches that add new files, generated by programs
other than Git, incorrectly. This is an old breakage in v1.7.11.
* tr/maint-apply-non-git-patch-parsefix:
apply: carefully strdup a possibly-NULL name
Older cURL wanted piece of memory we call it with to be stable, but
we updated the auth material after handing it to a call.
* bc/http-keep-memory-given-to-curl:
http.c: don't rewrite the user:passwd string multiple times
"git pull" into nothing trashed "local changes" that were in the
index.
* jk/pull-into-dirty-unborn:
pull: merge into unborn by fast-forwarding from empty tree
pull: update unborn branch tip after index
Many "git submodule" operations did not work on a submodule at a
path whose name is not in ASCII.
* fg/submodule-non-ascii-path:
t7400: test of UTF-8 submodule names pass under Mac OS
handle multibyte characters in name
"cherry-pick" had a small leak in its error codepath.
* fc/sequencer-plug-leak:
sequencer: avoid leaking message buffer when refusing to create an empty commit
sequencer: remove useless indentation
Logic used by git-send-email to suppress cc mishandled names like "A
U. Thor" <author@example.xz>, where the human readable part needs to
be quoted (the user input may not have the double quotes around the
name, and comparison was done between quoted and unquoted strings).
It also mishandled names that need RFC2047 quoting.
* mt/send-email-cc-match-fix:
send-email: sanitize author when writing From line
send-email: add test for duplicate utf8 name
test-send-email: test for pre-sanitized self name
t/send-email: test suppress-cc=self with non-ascii
t/send-email: add test with quoted sender
send-email: make --suppress-cc=self sanitize input
t/send-email: test suppress-cc=self on cccmd
send-email: fix suppress-cc=self on cccmd
t/send-email.sh: add test for suppress-cc=self
Pass port number as a separate argument when send-email initializes
Net::SMTP, instead of as a part of the hostname, i.e. host:port.
This allows GSSAPI codepath to match with the hostname given.
* bc/send-email-use-port-as-separate-param:
send-email: provide port separately from hostname
In addition to the choice from "rebase, merge, or checkout-detach",
allow a custom command to be used in "submodule update" to update
the working tree of submodules.
* cp/submodule-custom-update:
submodule update: allow custom command to update submodule working tree
"git format-patch" learned "--from[=whom]" option, which sets the
"From: " header to the specified person (or the person who runs the
command, if "=whom" part is missing) and move the original author
information to an in-body From: header as necessary.
* jk/format-patch-from:
teach format-patch to place other authors into in-body "From"
pretty.c: drop const-ness from pretty_print_context
The configuration variable "merge.ff" was cleary a tri-state to
choose one from "favor fast-forward when possible", "always create
a merge even when the history could fast-forward" and "do not
create any merge, only update when the history fast-forwards", but
the command line parser did not implement the usual convention of
"last one wins, and command line overrides the configuration"
correctly.
* mv/merge-ff-tristate:
merge: handle --ff/--no-ff/--ff-only as a tri-state option
Fetching between repositories with many refs employed O(n^2)
algorithm to match up the common objects, which has been corrected.
* jk/fetch-pack-many-refs:
fetch-pack: avoid quadratic behavior in rev_list_push
commit.c: make compare_commits_by_commit_date global
fetch-pack: avoid quadratic list insertion in mark_complete
An Gitweb installation that is a part of larger site can optionally
show extra links that point at the levels higher than the Gitweb
pages itself in the link hierarchy of pages.
* tf/gitweb-extra-breadcrumbs:
gitweb: allow extra breadcrumbs to prefix the trail
"log --format=" did not honor i18n.logoutputencoding configuration
and this attempts to fix it.
* as/log-output-encoding-in-user-format:
t4205 (log-pretty-formats): avoid using `sed`
t6006 (rev-list-format): add tests for "%b" and "%s" for the case i18n.commitEncoding is not set
t4205, t6006, t7102: make functions better readable
t4205 (log-pretty-formats): revert back single quotes
t4041, t4205, t6006, t7102: use iso8859-1 rather than iso-8859-1
t4205: replace .\+ with ..* in sed commands
pretty: --format output should honor logOutputEncoding
pretty: Add failing tests: --format output should honor logOutputEncoding
t4205 (log-pretty-formats): don't hardcode SHA-1 in expected outputs
t7102 (reset): don't hardcode SHA-1 in expected outputs
t6006 (rev-list-format): don't hardcode SHA-1 in expected outputs
The document says one cannot push from a shallow clone. But that is
not true (maybe it was at some point in the past). The client does not
stop such a push nor does it give any indication to the receiver that
this is a shallow push. If the receiver accepts it, it's in.
Since 52fed6e (receive-pack: check connectivity before concluding "git
push" - 2011-09-02), receive-pack is prepared to deal with broken
push, a shallow push can't cause any corruption. Update the document
to reflect that.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A test that should have failed but didn't revealed a bug that needs
to be corrected.
* jc/t1512-fix:
get_short_sha1(): correctly disambiguate type-limited abbreviation
t1512: correct leftover constants from earlier edition
"git stash save" is not just about "saving" the local changes, but
also is to restore the working tree state to that of HEAD. If you
changed a non-directory into a directory in the local change, you
may have untracked files in that directory, which have to be killed
while doing so, unless you run it with --include-untracked. Teach
the command to detect and error out before spreading the damage.
This needed a small fix to "ls-files --killed".
* pb/stash-refuse-to-kill:
git stash: avoid data loss when "git stash save" kills a directory
treat_directory(): do not declare submodules to be untracked
"git diff" refused to even show difference when core.safecrlf is
set to true (i.e. error out) and there are offending lines in the
working tree files.
* jc/maint-diff-core-safecrlf:
diff: demote core.safecrlf=true to core.safecrlf=warn
"git status" learned status.branch and status.short configuration
variables to use --branch and --short options by default (override
with --no-branch and --no-short options from the command line).
* jg/status-config:
status/commit: make sure --porcelain is not affected by user-facing config
commit: make it work with status.short
status: introduce status.branch to enable --branch by default
status: introduce status.short to enable --short by default
Invocations of "git checkout" used internally by "git rebase" were
counted as "checkout", and affected later "git checkout -" to the
the user to an unexpected place.
* rr/rebase-checkout-reflog:
checkout: respect GIT_REFLOG_ACTION
status: do not depend on rebase reflog messages
t/t2021-checkout-last: "checkout -" should work after a rebase finishes
wt-status: remove unused field in grab_1st_switch_cbdata
t7512: test "detached from" as well
Earlier remote.pushdefault (and per-branch branch.*.pushremote)
were introduced as an additional mechanism to choose what
repository to push into when "git push" did not say it from the
command line, to help people who push to a repository that is
different from where they fetch from. This attempts to finish that
topic by teaching the default mechanism to choose branch in the
remote repository to be updated by such a push.
The 'current', 'matching' and 'nothing' modes (specified by the
push.default configuration variable) extend to such a "triangular"
workflow naturally, but 'upstream' and 'simple' have to be updated.
. 'upstream' is about pushing back to update the branch in the
remote repository that the current branch fetches from and
integrates with, it errors out in a triangular workflow.
. 'simple' is meant to help new people by avoiding mistakes, and
will be the safe default in Git 2.0.
In a non-triangular workflow, it will continue to act as a cross
between 'upstream' and 'current' in that it pushes to the current
branch's @{upstream} only when it is set to the same name as the
current branch (e.g. your 'master' forks from the 'master' from
the central repository).
In a triangular workflow, this series tentatively defines it as
the same as 'current', but we may have to tighten it to avoid
surprises in some way.
* jc/triangle-push-fixup:
t/t5528-push-default: test pushdefault workflows
t/t5528-push-default: generalize test_push_*
push: change `simple` to accommodate triangular workflows
config doc: rewrite push.default section
t/t5528-push-default: remove redundant test_config lines
Instead of using a hand-managed argument array, use argv-array API
to manage dynamically formulated command line.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since git-pull learned the --rebase option it has not just been about
merging changes from a remote repository (where "merge" is in the sense
of "git merge"). Change the description to use "integrate" instead of
"merge" in order to reflect this.
Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some shells do not understand the one-line construct, and instead need
FOO=bar &&
export FOO
Detect this in the test-lint target.
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The == operator as an alias to = is not POSIX. This doesn't actually
matter for the execution of the script, because it only runs when the
shell is bash. However, it trips up test-lint, so it's nicer to use
the standard form.
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When pushing using a matching refspec or a pattern refspec, each ref
in the local repository must be paired with a ref advertised by the
remote server. This is accomplished by using the refspec to transform
the name of the local ref into the name it should have in the remote
repository, and then performing a linear search through the list of
remote refs to see if the remote ref was advertised by the remote
system.
Each of these lookups has O(n) complexity and makes match_push_refs()
be an O(m*n) operation, where m is the number of local refs and n is
the number of remote refs. If there are many refs 100,000+, then this
ref matching can take a significant amount of time. Let's prepare an
index of the remote refs to allow searching in O(log n) time and
reduce the complexity of match_push_refs() to O(m log n).
We prepare the index lazily so that it is only created when necessary.
So, there should be no impact when _not_ using a matching or pattern
refspec, i.e. when pushing using only explicit refspecs.
Dry-run push of a repository with 121,913 local and remote refs:
before after
real 1m40.582s 0m0.804s
user 1m39.914s 0m0.515s
sys 0m0.125s 0m0.106s
The creation of the index has overhead. So, if there are very few
local refs, then it could take longer to create the index than it
would have taken to just perform n linear lookups into the remote
ref space. Using the index should provide some improvement when
the number of local refs is roughly greater than the log of the
number of remote refs (i.e. m >= log n). The pathological case is
when there is a single local ref and very many remote refs.
Dry-run push of a repository with 121,913 remote refs and a single
local ref:
before after
real 0m0.525s 0m0.566s
user 0m0.243s 0m0.279s
sys 0m0.075s 0m0.099s
Using an index takes 41 ms longer, or roughly 7.8% longer.
Jeff King measured a no-op push of a single ref into a remote repo
with 370,000 refs:
before after
real 0m1.087s 0m1.156s
user 0m1.344s 0m1.412s
sys 0m0.288s 0m0.284s
Using an index takes 69 ms longer, or roughly 6.3% longer.
None of the measurements above required transferring any objects to
the remote repository. If the push required transferring objects and
updating the refs in the remote repository, the impact of preparing
the search index would be even smaller.
A similar operation is performed in the reverse direction when pruning
using a matching or pattern refspec. Let's avoid O(m*n) behavior in
the same way by lazily preparing an index on the local refs.
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The shell syntax "export X=Y A=B" is not understood by all shells.
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Acked-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 0433ad1 (clone: run check_everything_connected,
2013-03-25) added the same connectivity check to clone that
we use for fetching. The intent was to provide enough safety
checks that "git clone git://..." could be counted on to
detect bit errors and other repo corruption, and not
silently propagate them to the clone.
For local clones, this turns out to be a bad idea, for two
reasons:
1. Local clones use hard linking (or even shared object
stores), and so complete far more quickly. The time
spent on the connectivity check is therefore
proportionally much more painful.
2. Local clones do not actually meet our safety guarantee
anyway. The connectivity check makes sure we have all
of the objects we claim to, but it does not check for
bit errors. We will notice bit errors in commits and
trees, but we do not load blob objects at all. Whereas
over the pack transport, we actually recompute the sha1
of each object in the incoming packfile; bit errors
change the sha1 of the object, which is then caught by
the connectivity check.
This patch drops the connectivity check in the local case.
Note that we have to revert the changes from 0433ad1 to
t5710, as we no longer notice the corruption during clone.
We could go a step further and provide a "verify even local
clones" option, but it is probably not worthwhile. You can
already spell that as "cd foo.git && git fsck && git clone ."
or as "git clone --no-local foo.git".
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
