Brandon Casey [Thu, 6 Oct 2011 18:22:21 +0000 (13:22 -0500)]
attr.c: avoid inappropriate access to strbuf "buf" member
This code sequence performs a strcpy into the buf member of a strbuf
struct. The strcpy may move the position of the terminating nul of the
string and effectively change the length of string so that it does not
match the len member of the strbuf struct.
Currently, this sequence works since the strbuf was given a hint when it
was initialized to allocate enough space to accomodate the string that will
be strcpy'ed, but this is an implementation detail of strbufs, not a
guarantee.
So, lets rework this sequence so that the strbuf is only manipulated by
strbuf functions, and direct modification of its "buf" member is not
necessary.
Signed-off-by: Brandon Casey <drafnel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jay Soffian [Thu, 6 Oct 2011 18:25:55 +0000 (14:25 -0400)]
merge-one-file: fix "expr: non-numeric argument"
When invoking expr to compare two numbers, don't quote the
variables which are the output of 'wc -c'. On OS X, this output
includes spaces, which expr balks at:
Ilari Liusvaara [Mon, 3 Oct 2011 11:01:59 +0000 (14:01 +0300)]
Support ERR in remote archive like in fetch/push
Make ERR as first packet of remote snapshot reply work like it does in
fetch/push. Lets servers decline remote snapshot with message the same
way as declining fetch/push with a message.
Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Shawn O. Pearce [Tue, 4 Oct 2011 23:20:19 +0000 (16:20 -0700)]
remote-curl: Fix warning after HTTP failure
If the HTTP connection is broken in the middle of a fetch or clone
body, the client presented a useless error message due to part of
the upload-pack->remote-curl pkt-line protocol leaking out of the
helper as the helper's "fetch result":
error: RPC failed; result=18, HTTP code = 200
fatal: The remote end hung up unexpectedly
fatal: early EOF
fatal: unpack-objects failed
warning: https unexpectedly said: '0000'
Instead when the HTTP RPC fails discard all remaining data from
upload-pack and report nothing to the transport helper. Errors
were already sent to stderr.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jonathan Nieder [Mon, 3 Oct 2011 06:41:20 +0000 (01:41 -0500)]
Makefile: do not set setgid bit on directories on GNU/kFreeBSD
The g+s bit on directories to make group ownership inherited is a
SysVism --- BSD and most of its descendants do not need it since they
do the sane thing by default without g+s. In fact, on some
filesystems (but not all --- tmpfs works this way but UFS does not),
the kernel of FreeBSD does not even allow non-root users to set setgid
bit on directories and produces errors when one tries:
$ git init --shared dir
fatal: Could not make /tmp/dir/.git/refs writable by group
Since the setgid bit would only mean "do what you were going to do
already", it's better to avoid setting it. Accordingly, ever since
v1.5.5-rc0~59^2 (Do not use GUID on dir in git init --share=all on
FreeBSD, 2008-03-05), git on true FreeBSD has done exactly that. Set
DIR_HAS_BSD_GROUP_SEMANTICS in the makefile for GNU/kFreeBSD, too, so
machines that use glibc with the kernel of FreeBSD get the same fix.
This fixes t0001-init.sh and t1301-shared-repo.sh on GNU/kFreeBSD
when running tests with --root pointing to a directory that uses
tmpfs.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Sun, 2 Oct 2011 04:56:28 +0000 (21:56 -0700)]
diff: resurrect XDF_NEED_MINIMAL with --minimal
Earlier, 582aa00 (git diff too slow for a file, 2010-05-02)
unconditionally dropped XDF_NEED_MINIMAL option from the internal xdiff
invocation to help performance on pathological cases, while hinting that a
follow-up patch could reintroduce it with "--minimal" option from the
command line.
Junio C Hamano [Fri, 30 Sep 2011 17:33:15 +0000 (10:33 -0700)]
checkout $tree $path: do not clobber local changes in $path not in $tree
Checking paths out of a tree is (currently) defined to do:
- Grab the paths from the named tree that match the given pathspec,
and add them to the index;
- Check out the contents from the index for paths that match the
pathspec to the working tree; and while at it
- If the given pathspec did not match anything, suspect a typo from the
command line and error out without updating the index nor the working
tree.
Suppose that the branch you are working on has dir/myfile, and the "other"
branch has dir/other but not dir/myfile. Further imagine that you have
either modified or removed dir/myfile in your working tree, but you have
not run "git add dir/myfile" or "git rm dir/myfile" to tell Git about your
local change. Running
$ git checkout other dir
would add dir/other to the index with the contents taken out of the
"other" branch, and check out the paths from the index that match the
pathspec "dir", namely, "dir/other" and "dir/myfile", overwriting your
local changes to "dir/myfile", even though "other" branch does not even
know about that file.
Fix it by updating the working tree only with the index entries that
was read from the "other" tree.
Gerrit Pape [Tue, 27 Sep 2011 11:56:53 +0000 (11:56 +0000)]
templates/hooks--*: remove sample hooks without any functionality
Remove the sample post-commit and post-receive hooks. The sample
post-commit doesn't contain any sample functionality and the comments do
not provide more information than already found in the documentation.
The sample post-receive hooks doesn't provide any sample functionality
either and refers in the comments to a contrib hook that might be
installed in different locations on different systems, which isn't that
helpful.
Signed-off-by: Gerrit Pape <pape@smarden.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Peter Stuge [Tue, 27 Sep 2011 09:51:00 +0000 (11:51 +0200)]
gitweb: Fix links to lines in blobs when javascript-actions are enabled
The fixLinks() function adds 'js=1' to each link that does not already
have 'js' query parameter specified. This is used to signal to gitweb
that the browser can actually do javascript when these links are used.
There are two problems with the existing code:
1. URIs with fragment and 'js' query parameter, like e.g.
...foo?js=0#l199
were not recognized as having 'js' query parameter already.
2. The 'js' query parameter, in the form of either '?js=1' or ';js=1'
was appended at the end of URI, even if it included a fragment
(had a hash part). This lead to the incorrect links like this
...foo#l199?js=1
instead of adding query parameter as last part of query, but
before the fragment part, i.e.
...foo?js=1#l199
Signed-off-by: Peter Stuge <peter@stuge.se> Acked-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Gerrit Pape [Mon, 26 Sep 2011 12:58:35 +0000 (12:58 +0000)]
contrib/hooks: adapt comment about Debian install location for contrib hooks
Placing the contrib hooks into /usr/share/doc/ wasn't a good idea in the
first place. According to the Debian policy they should be located in
/usr/share/git-core/, so let's put them there.
Thanks to Bill Allombert for reporting this through
http://bugs.debian.org/640949
Signed-off-by: Gerrit Pape <pape@smarden.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Mon, 26 Sep 2011 20:30:30 +0000 (13:30 -0700)]
apply --whitespace=error: correctly report new blank lines at end
Earlier, 77b15bb (apply --whitespace=warn/error: diagnose blank at EOF,
2009-09-03) cheated by reporting the line number of the hunk that contains
the offending line that adds new blank lines at the end of the file. All
other types of whitespace errors are reported with the line number in the
patch file that has the actual offending text.
René Scharfe [Sun, 25 Sep 2011 13:39:08 +0000 (21:39 +0800)]
Revert removal of multi-match discard heuristic in 27af01
27af01d (xdiff/xprepare: improve O(n*m) performance in
xdl_cleanup_records(), 2011-08-17) was supposed to be a performance
boost only. However, it unexpectedly changed the behaviour of diff.
Revert a part of 27af01d that removes logic that mark lines as
"multi-match" (ie. dis[i] == 2). This was preventing the multi-match
discard heuristic (performed in xdl_cleanup_records() and
xdl_clean_mmatch()) from executing.
Reported-by: Alexander Pepper <pepper@inf.fu-berlin.de> Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The negation example uses '*' to match everything. This used to work
before 9037026 (unpack-trees: fix sparse checkout's "unable to match
directories") because back then, the list of paths is used to match
sparse patterns, so with the patterns
*
!subdir/
subdir/ always matches any path that start with subdir/ and "*" has no
chance to get tested. The result is subdir is excluded.
After the said commit, a tree structure is dynamically created and
sparse pattern matching now follows closely how read_directory()
applies .gitignore. This solves one problem, but reveals another one.
With this new strategy, "!subdir/" rule will be only tested once when
"subdir" directory is examined. Entries inside subdir, when examined,
will match "*" and are (correctly) re-added again because any rules
without a slash will match at every directory level. In the end, "*"
can revert every negation rules.
In order to correctly exclude subdir, we must use
/*
!subdir
to limit "match all" rule at top level only.
"*" rule has no actual use in sparse checkout and can be confusing to
users. While we can automatically turn "*" to "/*", this violates
.gitignore definition. Instead, discourage "*" in favor of "/*" (in
the second example).
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Fri, 16 Sep 2011 20:19:33 +0000 (13:19 -0700)]
mergetool: no longer need to save standard input
Earlier code wanted to run merge_file and prompt_after_failed_merge
both of which wanted to read from the standard input of the entire
script inside a while loop, which read from a pipe, and in order to
do so, it redirected the original standard input to another file
descriptor. We no longer need to do so after the previous change.
Jonathon Mah [Fri, 16 Sep 2011 02:12:10 +0000 (19:12 -0700)]
mergetool: Use args as pathspec to unmerged files
Mergetool now treats its path arguments as a pathspec (like other git
subcommands), restricting action to the given files and directories.
Files matching the pathspec are filtered so mergetool only acts on
unmerged paths; previously it would assume each path argument was in an
unresolved state, and get confused when it couldn't check out their
other stages.
Running "git mergetool subdir" will prompt to resolve all conflicted
blobs under subdir.
Signed-off-by: Jonathon Mah <me@JonathonMah.com> Acked-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Fri, 23 Sep 2011 22:21:01 +0000 (15:21 -0700)]
merge-recursive: Do not look at working tree during a virtual ancestor merge
Fix another instance of a recursive merge incorrectly paying attention to
the working tree file during a virtual ancestor merge, that resulted in
spurious and useless "addinfo_cache failed" error message.
Allan Caffee [Mon, 1 Aug 2011 01:52:41 +0000 (21:52 -0400)]
describe: Refresh the index when run with --dirty
When running git describe --dirty the index should be refreshed. Previously
the cached index would cause describe to think that the index was dirty when,
in reality, it was just stale.
The issue was exposed by python setuptools which hardlinks files into another
directory when building a distribution.
Junio C Hamano [Thu, 22 Sep 2011 17:54:47 +0000 (10:54 -0700)]
diff: teach --stat/--numstat to honor -U$num
"git diff -p" piped to external diffstat and "git diff --stat" may see
different patch text (both are valid and describe the same change
correctly) when counting the number of added and deleted lines, arriving
at different results to confuse the users, as --stat/--numstat codepath
always uses the hardcoded -U0 as the context length.
Make --stat/--numstat codepath to honor the context length the same way
as the textual patch codepath does to avoid this problem.
Michael Schubert [Wed, 21 Sep 2011 12:42:22 +0000 (14:42 +0200)]
patch-id.c: use strbuf instead of a fixed buffer
get_one_patchid() uses a rather dumb heuristic to determine if the
passed buffer is part of the next commit. Whenever the first 40 bytes
are a valid hexadecimal sha1 representation, get_one_patchid() returns
next_sha1.
Once the current line is longer than the fixed buffer, this will break
(provided the additional bytes make a valid hexadecimal sha1). As a result
patch-id returns incorrect results. Instead, use strbuf and read one line
at a time.
Helped-by: Jeff King <peff@peff.net> Signed-off-by: Michael Schubert <mschub@elegosoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-read-tree.txt: correct sparse-checkout and skip-worktree description
The description of .git/info/sparse-checkout and
skip-worktree is exactly the opposite of what is true, which is:
If a file matches a pattern in sparse-checkout, then (it is to be
checked out and therefore) skip-worktree is unset for that file;
otherwise, it is set (so that it is not checked out).
Currently, the opposite is documented, and (consistently) read-tree's
behavior with respect to bit flips is descibed incorrectly.
Fix it.
In hindsight, it would have been much better to have a "sparse-ignore"
or "sparse-skip" file so that an empty file would mean a full checkout,
and the file logic would be analogous to that of .gitignore, excludes
and skip-worktree.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
display_error_msgs() prints all the errors to stderr already (if any),
followed by "Aborting" (if any) to stdout. Make the latter go to stderr
instead.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Ramsay Jones [Sat, 10 Sep 2011 17:40:10 +0000 (18:40 +0100)]
t9159-*.sh: skip for mergeinfo test for svn <= 1.4
t9159 relies on the command-line syntax of svn >= 1.5. Given the
declining install base of older svn versions, it is not worth our time to
support older svn syntax.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Acked-by: Eric Wong <normalperson@yhbt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Christian Couder [Wed, 21 Sep 2011 05:17:24 +0000 (07:17 +0200)]
bisect: fix exiting when checkout failed in bisect_start()
Commit 4796e823 ("bisect: introduce --no-checkout support into porcelain." Aug 4 2011)
made checking out the branch where we started depends on the "checkout" mode. But
unfortunately it lost the "|| exit" part after the checkout command.
As it makes no sense to continue if the checkout failed and as people have already
complained that the error message given when we just exit in this case is not clear, see:
this patch adds a "|| die <hopefully clear message>" part after the checkout command.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Acked-by: Jon Seymour <jon.seymour@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Mon, 19 Sep 2011 19:15:45 +0000 (15:15 -0400)]
t4014: clean up format.thread config after each test
The threading tests turn on format.thread, but never clean
up after themselves, meaning that later tests will also have
format.thread set.
This is more annoying than most leftover config, too,
because not only does it impact the results of other tests,
but it does so non-deterministically. Threading requires the
generation of message-ids, which incorporate the current
time, meaning a slow-running test script may generate
different results from run to run.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Sun, 18 Sep 2011 23:52:32 +0000 (16:52 -0700)]
Teach progress eye-candy to fetch_refs_from_bundle()
With the usual "git" transport, a large-ish transfer with "git fetch" and
"git pull" give progress eye-candy to avoid boring users. However, not
when they are reading from a bundle. I.e.
$ git pull ../git-bundle.bndl master
This teaches bundle.c:unbundle() to give "-v" option to index-pack and
tell it to give progress bar when transport decides it is necessary.
The operation in the other direction, "git bundle create", could also
learn to honor --quiet but that is a separate issue.
HEAD and MERGE_HEAD (among other branch tips) should never hold a
tag. That can only be caused by broken tools and is cumbersome to fix
by an end user with:
$ git update-ref HEAD $(git rev-parse HEAD^{commit})
which may look like a magic to a new person.
Be easy, warn users (so broken tools can be fixed if they bother to
report) and move on.
Be robust, if the given SHA-1 cannot be resolved to a commit object,
die (therefore return value is always valid).
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Also kill head_invalid in favor of "head_commit == NULL".
Local variable "head" in cmd_merge() is renamed to "head_sha1" to make
sure I don't miss any access because this variable should not be used
after head_commit is set (use head_commit->object.sha1 instead).
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Fri, 16 Sep 2011 23:28:38 +0000 (16:28 -0700)]
branch --set-upstream: regression fix
The "git branch" command, while not in listing mode, calls create_branch()
even when the target branch already exists, and it does so even when it is
not interested in updating the value of the branch (i.e. the name of the
commit object that sits at the tip of the existing branch). This happens
when the command is run with "--set-upstream" option.
The earlier safety-measure to prevent "git branch -f $branch $commit" from
updating the currently checked out branch did not take it into account,
and we no longer can update the tracking information of the current branch.
Minimally fix this regression by telling the validation code if it is
called to really update the value of a potentially existing branch, or if
the caller merely is interested in updating auxiliary aspects of a branch.
Reported-and-Tested-by: Jay Soffian Signed-off-by: Junio C Hamano <gitster@pobox.com>
1e5814f created t9160-git-svn-mergeinfo-push.sh on 11/9/7 40a1530 created t9160-git-svn-preserve-empty-dirs.sh on 11/7/20
The former test script is renumbered to t9161.
Signed-off-by: Frédéric Heitzmann <frederic.heitzmann@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jakub Narebski [Fri, 16 Sep 2011 12:41:57 +0000 (14:41 +0200)]
gitweb: Strip non-printable characters from syntax highlighter output
The current code, as is, passes control characters, such as form-feed
(^L) to highlight which then passes it through to the browser. User
agents (web browsers) that support 'application/xhtml+xml' usually
require that web pages declared as XHTML and with this mimetype are
well-formed XML. Unescaped control characters cannot appear within a
contents of a valid XML document.
This will cause the browser to display one of the following warnings:
* Safari v5.1 (6534.50) & Google Chrome v13.0.782.112:
This page contains the following errors:
error on line 657 at column 38: PCDATA invalid Char value 12
Below is a rendering of the page up to the first error.
* Mozilla Firefox 3.6.19 & Mozilla Firefox 5.0:
XML Parsing Error: not well-formed
Location:
http://path/to/git/repo/blah/blah
Both errors were generated by gitweb.perl v1.7.3.4 w/ highlight 2.7
using arch/ia64/kernel/unwind.c from the Linux kernel.
When syntax highlighter is not used, control characters are replaced
by esc_html(), but with syntax highlighter they were passed through to
browser (to_utf8() doesn't remove control characters).
Introduce sanitize() subroutine which strips forbidden characters, but
does not perform HTML escaping, and use it in git_blob() to sanitize
syntax highlighter output for XHTML.
Note that excluding "\t" (U+0009), "\n" (U+000A) and "\r" (U+000D) is
not strictly necessary, atleast for currently the only callsite: "\t"
tabs are replaced by spaces by untabify(), "\n" is stripped from each
line before processing it, and replacing "\r" could be considered
improvement.
Originally-by: Christopher M. Fuhrman <cfuhrman@panix.com> Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Fri, 16 Sep 2011 00:09:41 +0000 (17:09 -0700)]
Documentation/gitnamespaces.txt: cater to older asciidoc
Older asciidoc (e.g. 8.2.5 on Centos 5.5) is unhappy if a manpage does not
have a SYNOPSIS section. Show a sample (and a possibly bogus) command line
of running two commands that pay attention to this environment variable
with a customized value.
Signed-off-by: Junio C Hamano <gitster@pobox.com> Reviewed-by: Jamey Sharp <jamey@minilop.net>
Jeff King [Thu, 1 Sep 2011 21:53:07 +0000 (17:53 -0400)]
filter-branch: use require_clean_work_tree
Filter-branch already requires that we have a clean work
tree before starting. However, it failed to refresh the
index before checking, which means it could be wrong in the
case of stat-dirtiness.
Instead of simply adding a call to refresh the index, let's
switch to using the require_clean_work_tree function
provided by git-sh-setup. It does exactly what we want, and
with fewer lines of code and more specific output messages.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Thomas Rast [Thu, 15 Sep 2011 08:34:31 +0000 (10:34 +0200)]
t6019: avoid refname collision on case-insensitive systems
The criss-cross tests kept failing for me because of collisions of 'a'
with 'A' etc. Prefix the lowercase refnames with an extra letter to
disambiguate.
Signed-off-by: Thomas Rast <trast@student.ethz.ch> Acked-by: Brad King <brad.king@kitware.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Tue, 13 Sep 2011 21:58:08 +0000 (17:58 -0400)]
quote: provide sq_dequote_to_argv_array
This is similar to sq_dequote_to_argv, but more convenient
if you have an argv_array. It's tempting to just feed the
components of the argv_array to sq_dequote_to_argv instead,
but:
1. It wouldn't maintain the NULL-termination invariant
of argv_array.
2. It doesn't match the memory ownership policy of
argv_array (in which each component is free-able, not a
pointer into a separate buffer).
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Tue, 13 Sep 2011 21:57:57 +0000 (17:57 -0400)]
refactor argv_array into generic code
The submodule code recently grew generic code to build a
dynamic argv array. Many other parts of the code can reuse
this, too, so let's make it generically available.
There are two enhancements not found in the original code:
1. We now handle the NULL-termination invariant properly,
even when no strings have been pushed (before, you
could have an empty, NULL argv). This was not a problem
for the submodule code, which always pushed at least
one argument, but was not sufficiently safe for
generic code.
2. There is a formatted variant of the "push" function.
This is a convenience function which was not needed by
the submodule code, but will make it easier to port
other users to the new code.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Tue, 13 Sep 2011 21:57:47 +0000 (17:57 -0400)]
quote.h: fix bogus comment
Commit 758e915 made sq_quote_next static, removing it from
quote.h. However, it forgot to update the related comment,
making it appear as a confusing description of sq_quote_to_argv.
Let's remove the crufty bits, and elaborate more on sq_quote_to_argv.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow git-svn to populate the svn:mergeinfo property automatically in
a narrow range of circumstances. Specifically, when dcommitting a
revision with multiple parents, all but (potentially) the first of
which have been committed to SVN in the same repository as the target
of the dcommit.
In this case, the merge info is the union of that given by each of the
parents, plus all changes introduced to the first parent by the other
parents.
In all other cases where a revision to be committed has multiple
parents, cause "git svn dcommit" to raise an error rather than
completing the commit and potentially losing history information in
the upstream SVN repository.
This behavior is disabled by default, and can be enabled by setting
the svn.pushmergeinfo config option.
[ew: minor style changes and manpage merge fix]
Acked-by: Eric Wong <normalperson@yhbt.net> Signed-off-by: Bryan Jacobs <bjacobs@woti.com>
Junio C Hamano [Thu, 8 Sep 2011 19:17:09 +0000 (12:17 -0700)]
refactor run_receive_hook()
Running a hook has to make complex set-up to establish web of
communication between child process and multiplexer, which is common
regardless of what kind of data is fed to the hook. Refactor the parts
that is specific to the data fed to the particular set of hooks from the
part that runs the hook, so that the code can be reused to drive hooks
that take different kind of data.
Jeff King [Mon, 12 Sep 2011 19:56:52 +0000 (15:56 -0400)]
fetch: avoid quadratic loop checking for updated submodules
Recent versions of git can be slow to fetch repositories with a
large number of refs (or when they already have a large
number of refs). For example, GitHub makes pull-requests
available as refs, which can lead to a large number of
available refs. This slowness goes away when submodule
recursion is turned off:
[this takes ~10 seconds of CPU time to complete]
git fetch --recurse-submodules=no \
git://github.com/rails/rails.git "refs/*:refs/*"
[this still isn't done after 10 _minutes_ of pegging the CPU]
git fetch \
git://github.com/rails/rails.git "refs/*:refs/*"
You can produce a quicker and simpler test case like this:
doit() {
head=`git rev-parse HEAD`
for i in `seq 1 $1`; do
echo $head refs/heads/ref$i
done >.git/packed-refs
echo "==> $1"
rm -rf dest
git init -q --bare dest &&
(cd dest && time git.compile fetch -q .. refs/*:refs/*)
}
doit 100
doit 200
doit 400
doit 800
doit 1600
doit 3200
Which yields timings like:
# refs seconds of CPU
100 0.06
200 0.24
400 0.95
800 3.39
1600 13.66
3200 54.09
Notice that although the number of refs doubles in each
trial, the CPU time spent quadruples.
The problem is that the submodule recursion code works
something like:
- for each ref we fetch
- for each commit in git rev-list $new_sha1 --not --all
- add modified submodules to list
- fetch any newly referenced submodules
But that means if we fetch N refs, we start N revision
walks. Worse, because we use "--all", the number of refs we
must process that constitute "--all" keeps growing, too. And
you end up doing O(N^2) ref resolutions.
Instead, this patch structures the code like this:
- for each sha1 we already have
- add $old_sha1 to list $old
- for each ref we fetch
- add $new_sha1 to list $new
- for each commit in git rev-list $new --not $old
- add modified submodules to list
- fetch any newly referenced submodules
This yields timings like:
# refs seconds of CPU
100 0.00
200 0.04
400 0.04
800 0.10
1600 0.21
3200 0.39
Note that the amount of effort doubles as the number of refs
doubles. Similarly, the fetch of rails.git takes about as
much time as it does with --recurse-submodules=no.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Pang Yan Han [Mon, 12 Sep 2011 17:46:41 +0000 (01:46 +0800)]
format-patch: ignore ui.color
commit c9bfb953 (want_color: automatically fallback to color.ui,
2011-08-17) introduced a regression where format-patch produces colorized
patches when color.ui is set to "always".
In f3aafa4 (Disable color detection during format-patch, 2006-07-09),
git_format_config was taught to intercept diff.color to avoid passing it
down to git_log_config and later, git_diff_ui_config.
Teach git_format_config to intercept color.ui in the same way.
Helped-by: Jeff King <peff@peff.net> Signed-off-by: Pang Yan Han <pangyanhan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Mon, 12 Sep 2011 17:38:11 +0000 (10:38 -0700)]
Merge branch 'jn/remote-helpers-doc'
* jn/remote-helpers-doc:
(short) documentation for the testgit remote helper
Documentation/git-remote-helpers: explain how import works with multiple refs
Documentation/remote-helpers: explain capabilities first
Junio C Hamano [Mon, 12 Sep 2011 04:53:13 +0000 (21:53 -0700)]
Merge branch 'jk/maint-config-param' into maint
* jk/maint-config-param:
config: use strbuf_split_str instead of a temporary strbuf
strbuf: allow strbuf_split to work on non-strbufs
config: avoid segfault when parsing command-line config
config: die on error in command-line config
fix "git -c" parsing of values with equals signs
strbuf_split: add a max parameter
we would not update the fetch refspec and even if there is a ref
called "refs/remotes/origin/master", we should not rename it, since it
was not created by fetching from the remote.
Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When renaming a remote, we also try to update the fetch refspec
accordingly, but only if it has the default format. For others, such
as refs/heads/master:refs/heads/origin, we are conservative and leave
it untouched. Let's give the user a warning about refspecs that are
not updated, so he can manually update the config if necessary.
Suggested-by: Jeff King <peff@peff.net> Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
remote: "rename o foo" should not rename ref "origin/bar"
When renaming a remote called 'o' using 'git remote rename o foo', git
should also rename any remote-tracking branches for the remote. This
does happen, but any remote-tracking branches starting with
'refs/remotes/o', such as 'refs/remotes/origin/bar', will also be
renamed (to 'refs/remotes/foorigin/bar' in this case).
Fix it by simply matching one more character, up to the slash
following the remote name.
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
remote: write correct fetch spec when renaming remote 'remote'
When renaming a remote whose name is contained in a configured fetch
refspec for that remote, we currently replace the first occurrence of
the remote name in the refspec. This is correct in most cases, but
breaks if the remote name occurs in the fetch refspec before the
expected place. For example, we currently change
Removing Cogito leaves just git and StGit, which is a rather
incomplete list of git diff tools available. Sidestep the problem
of deciding what tools to mention by not mentioning any.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Mon, 12 Sep 2011 01:03:38 +0000 (18:03 -0700)]
fsck: do not abort upon finding an empty blob
Asking fwrite() to write one item of size bytes results in fwrite()
reporting "I wrote zero item", when size is zero. Instead, we could
ask it to write "size" items of 1 byte and expect it to report that
"I wrote size items" when it succeeds, with any value of size,
including zero.
fetch: skip on-demand checking when no submodules are configured
It makes no sense to do the - possibly very expensive - call to "rev-list
<new-ref-sha1> --not --all" in check_for_new_submodule_commits() when
there aren't any submodules configured.
Leave check_for_new_submodule_commits() early when no name <-> path
mappings for submodules are found in the configuration. To make that work
reading the configuration had to be moved further up in cmd_fetch(), as
doing that after the actual fetch of the superproject was too late.
Reported-by: Martin Fick <mfick@codeaurora.org> Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Wed, 7 Sep 2011 18:18:18 +0000 (11:18 -0700)]
Minor update to how-to maintain git
A few more parts of this document is stale that needs updating
to reflect the reality, but I do not regularly rebase topics that
are only in "pu" anymore, which may be noteworthy for a commit.
Jonathan Nieder [Mon, 5 Sep 2011 22:29:34 +0000 (17:29 -0500)]
http: remove extra newline in error message
There is no need for a blank line between the detailed error message
and the later "fatal: HTTP request failed" notice. Keep the newline
written by error() itself and eliminate the extra one.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>