Commit Graph

1542 Commits

Author SHA1 Message Date
Junio C Hamano
abe199808c git checkout -b: allow switching out of an unborn branch
Running "git checkout -b another" immediately after "git init" when you do
not even have a commit on 'master' fails with:

    $ git checkout -b another
    fatal: You are on a branch yet to be born

This is unnecessary, if we redefine "git checkout -b $name" that does not
take any $start_point (which has to be a commit) as "I want to check out a
new branch $name from the state I am in".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-06 16:32:15 -08:00
Jeff King
fb630e048c tag: die when listing missing or corrupt objects
We don't usually bother looking at tagged objects at all
when listing. However, if "-n" is specified, we open the
objects to read the annotations of the tags.  If we fail to
read an object, or if the object has zero length, we simply
silently return.

The first case is an indication of a broken or corrupt repo,
and we should notify the user of the error.

The second case is OK to silently ignore; however, the
existing code leaked the buffer returned by read_sha1_file.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-06 10:00:51 -08:00
Jeff King
ca51699961 tag: fix output of "tag -n" when errors occur
When "git tag" is instructed to print lines from annotated
tags via "-n", it first prints the tag name, then attempts
to parse and print the lines of the tag object, and then
finally adds a trailing newline.

If an error occurs, we return early from the function and
never print the newline, screwing up the output for the next
tag. Let's factor the line-printing into its own function so
we can manage the early returns better, and make sure that
we always terminate the line.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-06 10:00:42 -08:00
Junio C Hamano
4802997c75 Merge branch 'cb/push-quiet' into maint
* cb/push-quiet:
  t5541: avoid TAP test miscounting
  fix push --quiet: add 'quiet' capability to receive-pack
  server_supports(): parse feature list more carefully
2012-02-05 23:58:42 -08:00
Junio C Hamano
c2d17ba3db branch --edit-description: protect against mistyped branch name
It is very easy to mistype the branch name when editing its description,
e.g.

	$ git checkout -b my-topic master
	: work work work
	: now we are at a good point to switch working something else
	$ git checkout master
	: ah, let's write it down before we forget what we were doing
	$ git branch --edit-description my-tpoic

The command does not notice that branch 'my-tpoic' does not exist.  It is
not lost (it becomes description of an unborn my-tpoic branch), but is not
very useful.  So detect such a case and error out to reduce the grief
factor from this common mistake.

This incidentally also errors out --edit-description when the HEAD points
at an unborn branch (immediately after "init", or "checkout --orphan"),
because at that point, you do not even have any commit that is part of
your history and there is no point in describing how this particular
branch is different from the branch it forked off of, which is the useful
bit of information the branch description is designed to capture.

We may want to special case the unborn case later, but that is outside the
scope of this patch to prevent more common mistakes before 1.7.9 series
gains too much widespread use.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-05 17:28:03 -08:00
Junio C Hamano
b5c9f1c1b0 merge: do not create a signed tag merge under --ff-only option
Starting at release v1.7.9, if you ask to merge a signed tag, "git merge"
always creates a merge commit, even when the tag points at a commit that
happens to be a descendant of your current commit.

Unfortunately, this interacts rather badly for people who use --ff-only to
make sure that their branch is free of local developments. It used to be
possible to say:

	$ git checkout -b frotz v1.7.9~30
        $ git merge --ff-only v1.7.9

and expect that the resulting tip of frotz branch matches v1.7.9^0 (aka
the commit tagged as v1.7.9), but this fails with the updated Git with:

	fatal: Not possible to fast-forward, aborting.

because a merge that merges v1.7.9 tag to v1.7.9~30 cannot be created by
fast forwarding.

We could teach users that now they have to do

	$ git merge --ff-only v1.7.9^0

but it is far more pleasant for users if we DWIMmed this ourselves.

When an integrator pulls in a topic from a lieutenant via a signed tag,
even when the work done by the lieutenant happens to fast-forward, the
integrator wants to have a merge record, so the integrator will not be
asking for --ff-only when running "git pull" in such a case. Therefore,
this change should not regress the support for the use case v1.7.9 wanted
to add.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-05 16:30:26 -08:00
Nguyễn Thái Ngọc Duy
7f814632f5 Use correct grammar in diffstat summary line
"git diff --stat" and "git apply --stat" now learn to print the line
"%d files changed, %d insertions(+), %d deletions(-)" in singular form
whenever applicable. "0 insertions" and "0 deletions" are also omitted
unless they are both zero.

This matches how versions of "diffstat" that are not prehistoric produced
their output, and also makes this line translatable.

[jc: with help from Thomas Dickey in archaeology of "diffstat"]
[jc: squashed Jonathan's updates to illustrations in tutorials and a test]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-03 23:19:42 -08:00
Junio C Hamano
2c733fb24c parse_date(): '@' prefix forces git-timestamp
The only place that the issue this series addresses was observed
where we read "cat-file commit" output and put it in GIT_AUTHOR_DATE
in order to replay a commit with an ancient timestamp.

With the previous patch alone, "git commit --date='20100917 +0900'"
can be misinterpreted to mean an ancient timestamp, not September in
year 2010.  Guard this codepath by requring an extra '@' in front of
the raw git timestamp on the parsing side. This of course needs to
be compensated by updating get_author_ident_from_commit and the code
for "git commit --amend" to prepend '@' to the string read from the
existing commit in the GIT_AUTHOR_DATE environment variable.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-03 23:11:32 -08:00
Jeff King
b3256eb8b3 standardize and improve lookup rules for external local repos
When you specify a local repository on the command line of
clone, ls-remote, upload-pack, receive-pack, or upload-archive,
or in a request to git-daemon, we perform a little bit of
lookup magic, doing things like looking in working trees for
.git directories and appending ".git" for bare repos.

For clone, this magic happens in get_repo_path. For
everything else, it happens in enter_repo. In both cases,
there are some ambiguous or confusing cases that aren't
handled well, and there is one case that is not handled the
same by both methods.

This patch tries to provide (and test!) standard, sensible
lookup rules for both code paths. The intended changes are:

  1. When looking up "foo", we have always preferred
     a working tree "foo" (containing "foo/.git" over the
     bare "foo.git". But we did not prefer a bare "foo" over
     "foo.git". With this patch, we do so.

  2. We would select directories that existed but didn't
     actually look like git repositories. With this patch,
     we make sure a selected directory looks like a git
     repo. Not only is this more sensible in general, but it
     will help anybody who is negatively affected by change
     (1) negatively (e.g., if they had "foo.git" next to its
     separate work tree "foo", and expect to keep finding
     "foo.git" when they reference "foo").

  3. The enter_repo code path would, given "foo", look for
     "foo.git/.git" (i.e., do the ".git" append magic even
     for a repo with working tree). The clone code path did
     not; with this patch, they now behave the same.

In the unlikely case of a working tree overlaying a bare
repo (i.e., a ".git" directory _inside_ a bare repo), we
continue to treat it as a working tree (prefering the
"inner" .git over the bare repo). This is mainly because the
combination seems nonsensical, and I'd rather stick with
existing behavior on the off chance that somebody is relying
on it.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-02 16:41:55 -08:00
Jeff King
9dd5245c10 grep: pre-load userdiff drivers when threaded
The low-level grep_source code will automatically load the
userdiff driver to see whether a file is binary. However,
when we are threaded, it will load the drivers in a
non-deterministic order, handling each one as its assigned
thread happens to be scheduled.

Meanwhile, the attribute lookup code (which underlies the
userdiff driver lookup) is optimized to handle paths in
sequential order (because they tend to share the same
gitattributes files). Multi-threading the lookups destroys
the locality and makes this optimization less effective.

We can fix this by pre-loading the userdiff driver in the
main thread, before we hand off the file to a worker thread.
My best-of-five for "git grep foo" on the linux-2.6
repository went from:

  real    0m0.391s
  user    0m1.708s
  sys     0m0.584s

to:

  real    0m0.360s
  user    0m1.576s
  sys     0m0.572s

Not a huge speedup, but it's quite easy to do. The only
trick is that we shouldn't perform this optimization if "-a"
was used, in which case we won't bother checking whether
the files are binary at all.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-02 10:36:08 -08:00
Jeff King
8f24a6323e convert git-grep to use grep_source interface
The grep_source interface (as opposed to grep_buffer) will
eventually gives us a richer interface for telling the
low-level grep code about our buffers. Eventually this will
lead to things like better binary-file handling. For now, it
lets us drop a lot of now-redundant code.

The conversion is mostly straight-forward. One thing to note
is that the memory ownership rules for "struct grep_source"
are different than the "struct work_item" found here (the
former will copy things like the filename, rather than
taking ownership). Therefore you will also see some slight
tweaking of when filename buffers are released.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-02 10:36:08 -08:00
Jeff King
b3aeb285d0 grep: move sha1-reading mutex into low-level code
The multi-threaded git-grep code needs to serialize access
to the thread-unsafe read_sha1_file call. It does this with
a mutex that is local to builtin/grep.c.

Let's instead push this down into grep.c, where it can be
used by both builtin/grep.c and grep.c. This will let us
safely teach the low-level grep.c code tricks that involve
reading from the object db.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-02 10:36:07 -08:00
Jeff King
78db6ea9dc grep: make locking flag global
The low-level grep code traditionally didn't care about
threading, as it doesn't do any threading itself and didn't
call out to other non-thread-safe code.  That changed with
0579f91 (grep: enable threading with -p and -W using lazy
attribute lookup, 2011-12-12), which pushed the lookup of
funcname attributes (which is not thread-safe) into the
low-level grep code.

As a result, the low-level code learned about a new global
"grep_attr_mutex" to serialize access to the attribute code.
A multi-threaded caller (e.g., builtin/grep.c) is expected
to initialize the mutex and set "use_threads" in the
grep_opt structure. The low-level code only uses the lock if
use_threads is set.

However, putting the use_threads flag into the grep_opt
struct is not the most logical place. Whether threading is
in use is not something that matters for each call to
grep_buffer, but is instead global to the whole program
(i.e., if any thread is doing multi-threaded grep, every
other thread, even if it thinks it is doing its own
single-threaded grep, would need to use the locking).  In
practice, this distinction isn't a problem for us, because
the only user of multi-threaded grep is "git-grep", which
does nothing except call grep.

This patch turns the opt->use_threads flag into a global
flag. More important than the nit-picking semantic argument
above is that this means that the locking functions don't
need to actually have access to a grep_opt to know whether
to lock. Which in turn can make adding new locks simpler, as
we don't need to pass around a grep_opt.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-02 10:36:07 -08:00
Jiang Xin
be39de2b26 i18n: git-commit whence_s "merge/cherry-pick" message
Mark the "merge/cherry-pick" messages in whence_s for translation.
These messages returned from whence_s function are used as argument
to build other messages.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-01 15:46:24 -08:00
Nguyễn Thái Ngọc Duy
99fb6e04cb pack-objects: convert to use parse_options()
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-01 13:05:00 -08:00
Nguyễn Thái Ngọc Duy
3a2ec52e99 pack-objects: remove bogus comment
The comment was introduced in b5d97e6 (pack-objects: run rev-list
equivalent internally. - 2006-09-04), stating that

git pack-objects [options] base-name <refs...>

is acceptable and refs should be passed into rev-list. But that's not
true. All arguments after base-name are ignored.

Remove the comment and reject this syntax (i.e. no more arguments after
base name)

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-01 13:04:11 -08:00
Nguyễn Thái Ngọc Duy
6a301345a5 pack-objects: do not accept "--index-version=version,"
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-01 13:03:46 -08:00
Junio C Hamano
873ce7c8d5 Merge branch 'tr/merge-edit-guidance'
* tr/merge-edit-guidance:
  merge: add instructions to the commit message when editing
2012-01-31 22:31:03 -08:00
Junio C Hamano
af6b37fab1 Merge branch 'jc/pull-signed-tag'
* jc/pull-signed-tag:
  merge: use editor by default in interactive sessions

Conflicts:
	Documentation/merge-options.txt
2012-01-31 22:30:42 -08:00
Junio C Hamano
5ce2b97d2c Merge branch 'nd/clone-detached'
* nd/clone-detached:
  clone: fix up delay cloning conditions
  push: do not let configured foreign-vcs permanently clobbered
  clone: print advice on checking out detached HEAD
  clone: allow --branch to take a tag
  clone: refuse to clone if --branch points to bogus ref
  clone: --branch=<branch> always means refs/heads/<branch>
  clone: delay cloning until after remote HEAD checking
  clone: factor out remote ref writing
  clone: factor out HEAD update code
  clone: factor out checkout code
  clone: write detached HEAD in bare repositories
  t5601: add missing && cascade
2012-01-31 22:24:23 -08:00
Junio C Hamano
3e9e416593 Merge branch 'tr/grep-l-with-decoration'
* tr/grep-l-with-decoration:
  grep: fix -l/-L interaction with decoration lines
2012-01-31 22:01:15 -08:00
Junio C Hamano
7010146f90 Merge branch 'rr/sequencer'
* rr/sequencer:
  sequencer: factor code out of revert builtin
  revert: prepare to move replay_action to header

Conflicts:
	builtin/revert.c
2012-01-31 22:01:14 -08:00
Junio C Hamano
87a23e77c6 Merge branch 'jc/advise-i18n'
* jc/advise-i18n:
  i18n of multi-line advice messages
2012-01-31 22:01:14 -08:00
Thomas Rast
f26af3fcbc merge: add instructions to the commit message when editing
Before f824628 (merge: use editor by default in interactive sessions,
2012-01-10), git-merge only started an editor if the user explicitly
asked for it with --edit.  Thus it seemed unlikely that the user would
need extra guidance.

After f824628 the _normal_ thing is to start an editor.  Give at least
an indication of why we are doing it.

The sentence about justification is one of the few things about
standard git that are not agnostic to the workflow that the user
chose.  However, f824628 was proposed by Linus specifically to
discourage users from merging unrelated upstream progress into topic
branches.  So we may as well take another step in the same direction.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-31 12:04:38 -08:00
Junio C Hamano
5a304dd303 Merge branch 'nd/index-pack-no-recurse'
* nd/index-pack-no-recurse:
  index-pack: eliminate unlimited recursion in get_base_data()
  index-pack: eliminate recursion in find_unresolved_deltas
  Eliminate recursion in setting/clearing marks in commit list
2012-01-29 13:18:56 -08:00
Junio C Hamano
a734e7ef6c Merge branch 'mh/ref-clone-without-extra-refs'
* mh/ref-clone-without-extra-refs:
  write_remote_refs(): create packed (rather than extra) refs
  add_packed_ref(): new function in the refs API.
  ref_array: keep track of whether references are sorted
  pack_refs(): remove redundant check
2012-01-29 13:18:53 -08:00
Junio C Hamano
bff64a9cda Merge branch 'tr/maint-mailinfo'
* tr/maint-mailinfo:
  mailinfo: with -b, keep space after [foo]
  am: learn passing -b to mailinfo

Conflicts:
	git-am.sh
2012-01-29 13:18:53 -08:00
Junio C Hamano
02a20d1038 Merge branch 'nd/maint-refname-in-hierarchy-check'
* nd/maint-refname-in-hierarchy-check:
  Fix incorrect ref namespace check
2012-01-29 13:18:51 -08:00
Junio C Hamano
7b718fbf17 Merge branch 'cb/push-quiet'
* cb/push-quiet:
  t5541: avoid TAP test miscounting
  fix push --quiet: add 'quiet' capability to receive-pack
  server_supports(): parse feature list more carefully
2012-01-29 13:18:50 -08:00
Junio C Hamano
7859f533e2 Merge branch 'nd/clone-single-branch'
* nd/clone-single-branch:
  clone: add --single-branch to fetch only one branch
2012-01-29 13:18:50 -08:00
Nguyễn Thái Ngọc Duy
9049816140 clone: fix up delay cloning conditions
6f48d39 (clone: delay cloning until after remote HEAD checking -
2012-01-16) allows us to perform some checks on remote refs before the
actual cloning happens. But not all transport types support
this. Remote helper with "import" capability will not return complete
ref information until fetch is performed and therefore the clone cannot
be delayed.

foreign_vcs field in struct remote was used to detect this kind of transport
and save the result. This is a mistake because foreign_vcs is designed
to override url-based transport detection. As a result, if the same
"struct transport *" object is used on many different urls and one of
them attached remote transport, the following urls will be mistakenly
attached to the same transport. This fault is worked around by dad0b3d
(push: do not let configured foreign-vcs permanently clobbered -
2012-01-23)

To fix this, detect incomplete refs from transport_get_remote_refs()
by SHA-1. Incomplete ones must have null SHA-1 (*). Then revert
changes related to foreign_cvs field in 6f48d39 and dad0b3d.

A good thing from this change is that cloning smart http transport can
also be delayed. Earlier it falls into the same category "remote
transport, no delay".

(*) Theoretically if one of the remote refs happens to have null SHA-1,
it will trigger false alarm and the clone will not be delayed. But
that chance may be too small for us to pay attention to.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-24 10:05:15 -08:00
Junio C Hamano
dad0b3d8e5 push: do not let configured foreign-vcs permanently clobbered
Recently, 6f48d39 (clone: delay cloning until after remote HEAD checking,
2012-01-16) tried to record if a remote helper needs to be called after
parsing the remote when transport_get() is called, by overwriting the
field meant to store the configured remote helper name in the remote
structure.

This is OK when a remote represents a single remote repository, but fails
miserably when pushing to locations with multiple URLs, like this:

    $ cat .git/config
    [remote "origin"]
        url = https://code.google.com/p/git-htmldocs/
        url = github.com:gitster/git-htmldocs.git
        push = refs/heads/master:refs/heads/master
    $ git push

The second url that is supposed to use the git-over-ssh transport
mistakenly use https:// and fails with:

    error: Couldn't resolve host 'github.com:gitster' while accessing
    github.com:gitster/git-htmldocs.git/info/refs
    fatal: HTTP request failed

The right solution would probably be to dedicate a separate field to store
the detected external helper to be used, which is valid only during a
single use of transport until it is disconnected, instead of overwriting
foreign_vcs field, but in the meantime, this band-aid should suffice.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-23 16:38:42 -08:00
Junio C Hamano
f8246281af merge: use editor by default in interactive sessions
Traditionally, a cleanly resolved merge was committed by "git merge" using
the auto-generated merge commit log message without invoking the editor.

After 5 years of use in the field, it turns out that people perform too
many unjustified merges of the upstream history into their topic branches.
These merges are not just useless, but they are often not explained well,
and making the end result unreadable when it gets time for merging their
history back to their upstream.

Earlier we added the "--edit" option to the command, so that people can
edit the log message to explain and justify their merge commits. Let's
take it one step further and spawn the editor by default when we are in an
interactive session (i.e. the standard input and the standard output are
pointing at the same tty device).

There may be existing scripts that leave the standard input and the
standard output of the "git merge" connected to whatever environment the
scripts were started, and such invocation might trigger the above
"interactive session" heuristics.  GIT_MERGE_AUTOEDIT environment variable
can be set to "no" at the beginning of such scripts to use the historical
behaviour while the script runs.

Note that this backward compatibility is meant only for scripts, and we
deliberately do *not* support "merge.edit = yes/no/auto" configuration
option to allow people to keep the historical behaviour.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-23 14:34:55 -08:00
Albert Yale
50dd0f2fd9 grep: fix -l/-L interaction with decoration lines
In threaded mode, git-grep emits file breaks (enabled with context, -W
and --break) into the accumulation buffers even if they are not
required.  The output collection thread then uses skip_first_line to
skip the first such line in the output, which would otherwise be at
the very top.

This is wrong when the user also specified -l/-L/-c, in which case
every line is relevant.  While arguably giving these options together
doesn't make any sense, git-grep has always quietly accepted it.  So
do not skip anything in these cases.

Signed-off-by: Albert Yale <surfingalbert@gmail.com>
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-23 10:49:34 -08:00
Michael Haggerty
39ef7fae9a write_remote_refs(): create packed (rather than extra) refs
write_remote_refs() creates new packed refs from references obtained
from the remote repository, which is "out of thin air" as far as the
local repository is concerned.  Previously it did this by creating
"extra" refs, then calling pack_refs() to bake them into the
packed-refs file.  Instead, create packed refs (in the packed
reference cache) directly, then call pack_refs().

Aside from being more logical, this is another step towards removing
extra refs entirely.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-17 11:55:04 -08:00
Nguyễn Thái Ngọc Duy
2857093ba1 clone: print advice on checking out detached HEAD
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:27 -08:00
Nguyễn Thái Ngọc Duy
5a7d5b683f clone: allow --branch to take a tag
Because a tag ref cannot be put to HEAD, HEAD will become detached.
This is consistent with "git checkout <tag>".

This is mostly useful in shallow clone, where it allows you to clone a
tag in addtion to branches.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:26 -08:00
Nguyễn Thái Ngọc Duy
920b691fe4 clone: refuse to clone if --branch points to bogus ref
It's possible that users make a typo in the branch name. Stop and let
users recheck. Falling back to remote's HEAD is not documented any
way.

Except when using remote helper, the pack has not been transferred at
this stage yet so we don't waste much bandwidth.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:26 -08:00
Nguyễn Thái Ngọc Duy
9e58504601 clone: --branch=<branch> always means refs/heads/<branch>
It does not make sense to look outside refs/heads for HEAD's target
(src_ref_prefix can be set to "refs/" if --mirror is used) because ref
code only allows symref in form refs/heads/...

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:26 -08:00
Nguyễn Thái Ngọc Duy
6f48d39fa4 clone: delay cloning until after remote HEAD checking
This gives us an opportunity to abort the command during remote HEAD
check without wasting much bandwidth.

Cloning with remote-helper remains before the check because the remote
helper updates mapped_refs, which is necessary for remote ref checks.
foreign_vcs field is used to indicate the transport is handled by
remote helper.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:25 -08:00
Nguyễn Thái Ngọc Duy
960b7d1c62 clone: factor out remote ref writing
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:25 -08:00
Nguyễn Thái Ngọc Duy
f034d3549f clone: factor out HEAD update code
While at it, update the comment at "if (remote_head)"

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:25 -08:00
Nguyễn Thái Ngọc Duy
c39852c18d clone: factor out checkout code
Read HEAD from disk instead of relying on local variable
our_head_points_at, so that if earlier code fails to make HEAD
properly, it'll be detected.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:25 -08:00
Nguyễn Thái Ngọc Duy
7f08c6858e clone: write detached HEAD in bare repositories
If we don't write, HEAD is still at refs/heads/master as initialized
by init-db, which may or may not match remote's HEAD.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:26:24 -08:00
Thomas Rast
ee2d1cb402 mailinfo: with -b, keep space after [foo]
The logic for the -b mode, where [PATCH] is dropped but [foo] is not,
silently ate all spaces after the ].

Fix this by keeping the next isspace() character, if there is any.
Being more thorough is pointless, as the later cleanup_space() call
will normalize any sequence of whitespace to a single ' '.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 16:06:57 -08:00
Nguyễn Thái Ngọc Duy
20e95d0a84 index-pack: eliminate unlimited recursion in get_base_data()
Revese the order of delta applying so that by the time a delta is
applied, its base is either non-delta or already inflated.
get_base_data() is still recursive, but because base's data is always
ready, the inner get_base_data() call never has any chance to call
itself again.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 14:34:33 -08:00
Nguyễn Thái Ngọc Duy
2baad22013 index-pack: eliminate recursion in find_unresolved_deltas
Current find_unresolved_deltas() links all bases together in a form of
tree, using struct base_data, with prev_base pointer to point to
parent node. Then it traverses down from parent to children in
recursive manner with all base_data allocated on stack.

To eliminate recursion, we simply need to put all on heap
(parse_pack_objects and fix_unresolved_deltas). After that, it's
simple non-recursive depth-first traversal loop. Each node also
maintains its own state (ofs and ref indices) to iterate over all
children nodes.

So we process one node:

 - if it returns a new (child) node (a parent base), we link it to our
   tree, then process the new node.

 - if it returns nothing, the node is done, free it. We go back to
   parent node and resume whatever it's doing.

and do it until we have no nodes to process.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-16 14:28:27 -08:00
Junio C Hamano
c4a01a3cbb Merge branch 'maint'
* maint:
  Update draft release notes to 1.7.8.4
  Update draft release notes to 1.7.7.6
  Update draft release notes to 1.7.6.6
  thin-pack: try harder to use preferred base objects as base
2012-01-12 23:33:39 -08:00
Junio C Hamano
5a6a939481 Merge branch 'maint-1.7.7' into maint
* maint-1.7.7:
  Update draft release notes to 1.7.7.6
  Update draft release notes to 1.7.6.6
  thin-pack: try harder to use preferred base objects as base
2012-01-12 23:31:46 -08:00
Junio C Hamano
901c907d83 Merge branch 'maint-1.7.6' into maint-1.7.7
* maint-1.7.6:
  Update draft release notes to 1.7.6.6
  thin-pack: try harder to use preferred base objects as base
2012-01-12 23:31:05 -08:00
Jeff King
15f07e061e thin-pack: try harder to use preferred base objects as base
When creating a pack using objects that reside in existing packs, we try
to avoid recomputing futile delta between an object (trg) and a candidate
for its base object (src) if they are stored in the same packfile, and trg
is not recorded as a delta already. This heuristics makes sense because it
is likely that we tried to express trg as a delta based on src but it did
not produce a good delta when we created the existing pack.

As the pack heuristics prefer producing delta to remove data, and Linus's
law dictates that the size of a file grows over time, we tend to record
the newest version of the file as inflated, and older ones as delta
against it.

When creating a thin-pack to transfer recent history, it is likely that we
will try to send an object that is recorded in full, as it is newer.  But
the heuristics to avoid recomputing futile delta effectively forbids us
from attempting to express such an object as a delta based on another
object. Sending an object in full is often more expensive than sending a
suboptimal delta based on other objects, and it is even more so if we
could use an object we know the receiving end already has (i.e. preferred
base object) as the delta base.

Tweak the recomputation avoidance logic, so that we do not punt on
computing delta against a preferred base object.

The effect of this change can be seen on two simulated upload-pack
workloads. The first is based on 44 reflog entries from my git.git
origin/master reflog, and represents the packs that kernel.org sent me git
updates for the past month or two. The second workload represents much
larger fetches, going from git's v1.0.0 tag to v1.1.0, then v1.1.0 to
v1.2.0, and so on.

The table below shows the average generated pack size and the average CPU
time consumed for each dataset, both before and after the patch:

                  dataset
            | reflog | tags
---------------------------------
     before | 53358  | 2750977
size  after | 32398  | 2668479
     change |   -39% |      -3%
---------------------------------
     before |  0.18  | 1.12
CPU   after |  0.18  | 1.15
     change |    +0% |      +3%

This patch makes a much bigger difference for packs with a shorter slice
of history (since its effect is seen at the boundaries of the pack) though
it has some benefit even for larger packs.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-12 23:06:20 -08:00
Ramkumar Ramachandra
043a4492b3 sequencer: factor code out of revert builtin
Expose the cherry-picking machinery through a public
sequencer_pick_revisions() (renamed from pick_revisions() in
builtin/revert.c), so that cherry-picking and reverting are special
cases of a general sequencer operation.  The cherry-pick builtin is
now a thin wrapper that does command-line argument parsing before
calling into sequencer_pick_revisions().  In the future, we can write
a new "foo" builtin that calls into the sequencer like:

  memset(&opts, 0, sizeof(opts));
  opts.action = REPLAY_FOO;
  opts.revisions = xmalloc(sizeof(*opts.revs));
  parse_args_populate_opts(argc, argv, &opts);
  init_revisions(opts.revs);
  sequencer_pick_revisions(&opts);

This patch does not intend to make any functional changes.  Check
with:

  $ git blame -s -C HEAD^..HEAD -- sequencer.c | grep -C3 '^[^^]'

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-11 18:11:49 -08:00
Ramkumar Ramachandra
644a36908d revert: prepare to move replay_action to header
REVERT and CHERRY_PICK and are unsuitable names for an enumerator in a
public interface, because they are generic enough to be likely to
clash with identifiers with other meanings.  Rename to REPLAY_REVERT
and REPLAY_PICK as preparation for exposing them.

Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-11 18:08:22 -08:00
Nguyễn Thái Ngọc Duy
97ba642bcf Fix incorrect ref namespace check
The reason why the trailing slash is needed is obvious. refs/stash and
HEAD are not namespace, but complete refs. Do full string compare on them.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-11 12:52:12 -08:00
Junio C Hamano
d9af2282c0 Merge branch 'mh/ref-api-less-extra-refs'
* mh/ref-api-less-extra-refs:
  write_head_info(): handle "extra refs" locally
  show_ref(): remove unused "flag" and "cb_data" arguments
  receive-pack: move more work into write_head_info()
2012-01-09 15:58:43 -08:00
Clemens Buchacher
c207e34f77 fix push --quiet: add 'quiet' capability to receive-pack
Currently, git push --quiet produces some non-error output, e.g.:

 $ git push --quiet
 Unpacking objects: 100% (3/3), done.

This fixes a bug reported for the fedora git package:

 https://bugzilla.redhat.com/show_bug.cgi?id=725593

Reported-by: Jesse Keating <jkeating@redhat.com>
Cc: Todd Zullinger <tmz@pobox.com>

Commit 90a6c7d4 (propagate --quiet to send-pack/receive-pack)
introduced the --quiet option to receive-pack and made send-pack
pass that option. Older versions of receive-pack do not recognize
the option, however, and terminate immediately. The commit was
therefore reverted.

This change instead adds a 'quiet' capability to receive-pack,
which is a backwards compatible.

In addition, this fixes push --quiet via http: A verbosity of 0
means quiet for remote helpers.

Reported-by: Tobias Ulmer <tobiasu@tmux.org>
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-08 14:27:28 -08:00
Junio C Hamano
f47182c852 server_supports(): parse feature list more carefully
We have been carefully choosing feature names used in the protocol
extensions so that the vocabulary does not contain a word that is a
substring of another word, so it is not a real problem, but we have
recently added "quiet" feature word, which would mean we cannot later
add some other word with "quiet" (e.g. "quiet-push"), which is awkward.

Let's make sure that we can eventually be able to do so by teaching the
clients and servers that feature words consist of non whitespace
letters. This parser also allows us to later add features with parameters
e.g. "feature=1.5" (parameter values need to be quoted for whitespaces,
but we will worry about the detauls when we do introduce them).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-08 14:26:28 -08:00
Nguyễn Thái Ngọc Duy
3e6e0edde2 clone: add --single-branch to fetch only one branch
When --single-branch is given, only one branch, either HEAD or one
specified by --branch, will be fetched. Also only tags that point to
the downloaded history are fetched.

This helps most in shallow clones, where it can reduce the download to
minimum and that is why it is enabled by default when --depth is given.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-08 13:48:27 -08:00
Junio C Hamano
5de89d3abf Merge branch 'jc/show-sig'
* jc/show-sig:
  log --show-signature: reword the common two-head merge case
  log-tree: show mergetag in log --show-signature output
  log-tree.c: small refactor in show_signature()
  commit --amend -S: strip existing gpgsig headers
  verify_signed_buffer: fix stale comment
  gpg-interface: allow use of a custom GPG binary
  pretty: %G[?GS] placeholders
  test "commit -S" and "log --show-signature"
  log: --show-signature
  commit: teach --gpg-sign option

Conflicts:
	builtin/commit-tree.c
	builtin/commit.c
	builtin/merge.c
	notes-cache.c
	pretty.c
2012-01-06 12:44:07 -08:00
Junio C Hamano
1067f8dd0e Merge branch 'jh/fetch-head-update'
* jh/fetch-head-update:
  write first for-merge ref to FETCH_HEAD first
2012-01-06 12:44:01 -08:00
Michael Haggerty
85f2510450 write_head_info(): handle "extra refs" locally
The old code basically did:

     generate array of SHA1s for alternate refs
     for each unique SHA1 in array:
         add_extra_ref(".have", sha1)
     for each ref (including real refs and extra refs):
         show_ref(refname, sha1)

But there is no need to stuff the alternate refs in extra_refs; we can
call show_ref() directly when iterating over the array, then handle
real refs separately.  So change the code to:

     generate array of SHA1s for alternate refs
     for each unique SHA1 in array:
         show_ref(".have", sha1)
     for each ref (this now only includes real refs):
         show_ref(refname, sha1)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-06 11:26:41 -08:00
Michael Haggerty
bc98201d84 show_ref(): remove unused "flag" and "cb_data" arguments
The function is not used as a callback, so it doesn't need these
arguments.  Also change its return type to void.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-06 11:15:04 -08:00
Michael Haggerty
b7a025d921 receive-pack: move more work into write_head_info()
Move some more code from the calling site into write_head_info(), and
inline add_alternate_refs() there.  (Some more simplification is
coming, and it is easier if all this code is in the same place.)

Move some helper functions to avoid the need for forward declarations.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-06 11:12:50 -08:00
Junio C Hamano
c871a1d17b commit --amend -S: strip existing gpgsig headers
Any existing commit signature was made against the contents of the old
commit, including its committer date that is about to change, and will
become invalid by amending it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-05 13:02:26 -08:00
Junio C Hamano
9d3d78435f Merge branch 'jc/signed-commit' and 'jc/pull-signed-tag'
They both use the extended headers in commit objects, and the former has
necessary infrastructure to show them that is useful to view the result of
the latter.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-05 11:00:49 -08:00
Joey Hess
96890f4c42 write first for-merge ref to FETCH_HEAD first
The FETCH_HEAD refname is supposed to refer to the ref that was fetched
and should be merged. However all fetched refs are written to
.git/FETCH_HEAD in an arbitrary order, and resolve_ref_unsafe simply
takes the first ref as the FETCH_HEAD, which is often the wrong one,
when other branches were also fetched.

The solution is to write the for-merge ref(s) to FETCH_HEAD first.
Then, unless --append is used, the FETCH_HEAD refname behaves as intended.
If the user uses --append, they presumably are doing so in order to
preserve the old FETCH_HEAD.

While we are at it, update an old example in the read-tree documentation
that implied that each entry in FETCH_HEAD only has the object name, which
is not true for quite a while.

[jc: adjusted tests]

Signed-off-by: Joey Hess <joey@kitenet.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-03 16:13:14 -08:00
Junio C Hamano
48de6569eb Sync with 1.7.8.2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-28 12:04:25 -08:00
Junio C Hamano
9a8e485430 Merge branch 'jv/maint-config-set' into maint
* jv/maint-config-set:
  Fix an incorrect reference to --set-all.
2011-12-28 12:03:19 -08:00
Junio C Hamano
9b0b0b4f45 Merge branch 'jc/checkout-m-twoway' into maint
* jc/checkout-m-twoway:
  t/t2023-checkout-m.sh: fix use of test_must_fail
  checkout_merged(): squelch false warning from some gcc
  Test 'checkout -m -- path'
  checkout -m: no need to insist on having all 3 stages
2011-12-28 11:44:54 -08:00
Junio C Hamano
b42e81afe2 Merge branch 'jk/maint-strbuf-missing-init' into maint
* jk/maint-strbuf-missing-init:
  commit, merge: initialize static strbuf
2011-12-28 11:42:46 -08:00
Junio C Hamano
770dd00ebd Merge branch 'jn/maint-sequencer-fixes' into maint
* jn/maint-sequencer-fixes:
  revert: stop creating and removing sequencer-old directory
  Revert "reset: Make reset remove the sequencer state"
  revert: do not remove state until sequence is finished
  revert: allow single-pick in the middle of cherry-pick sequence
  revert: pass around rev-list args in already-parsed form
  revert: allow cherry-pick --continue to commit before resuming
  revert: give --continue handling its own function
2011-12-28 11:32:39 -08:00
Junio C Hamano
699eb54876 Merge branch 'jk/maint-mv' into maint
* jk/maint-mv:
  mv: be quiet about overwriting
  mv: improve overwrite warning
  mv: make non-directory destination error more clear
  mv: honor --verbose flag
  docs: mention "-k" for both forms of "git mv"
2011-12-28 11:32:36 -08:00
Junio C Hamano
7a5638a159 Merge branch 'jk/fetch-no-tail-match-refs' into maint
* jk/fetch-no-tail-match-refs:
  connect.c: drop path_match function
  fetch-pack: match refs exactly
  t5500: give fully-qualified refs to fetch-pack
  drop "match" parameter from get_remote_heads
2011-12-28 11:32:36 -08:00
Junio C Hamano
474294963e Merge branch 'ci/stripspace-docs' into maint
* ci/stripspace-docs:
  Update documentation for stripspace
2011-12-28 11:32:35 -08:00
Junio C Hamano
79587741cb Merge branch 'jn/branch-move-to-self' into maint
* jn/branch-move-to-self:
  Allow checkout -B <current-branch> to update the current branch
  branch: allow a no-op "branch -M <current-branch> HEAD"
2011-12-28 11:32:33 -08:00
Jelmer Vernooij
67e223edc4 Fix an incorrect reference to --set-all.
Signed-off-by: Jelmer Vernooij <jelmer@samba.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-27 11:14:18 -08:00
Junio C Hamano
35726681d5 Merge branch 'ab/sun-studio-portability'
* ab/sun-studio-portability:
  Appease Sun Studio by renaming "tmpfile"
  Fix a bitwise negation assignment issue spotted by Sun Studio
  Fix an enum assignment issue spotted by Sun Studio
2011-12-22 15:30:33 -08:00
Junio C Hamano
c0129439d0 Merge branch 'rr/revert-cherry-pick'
* rr/revert-cherry-pick:
  t3502, t3510: clarify cherry-pick -m failure
  t3510 (cherry-pick-sequencer): use exit status
  revert: simplify getting commit subject in format_todo()
  revert: tolerate extra spaces, tabs in insn sheet
  revert: make commit subjects in insn sheet optional
  revert: free msg in format_todo()
2011-12-22 15:30:22 -08:00
Junio C Hamano
1aea303d7e Merge branch 'jk/maint-strbuf-missing-init'
* jk/maint-strbuf-missing-init:
  commit, merge: initialize static strbuf

Conflicts:
	builtin/merge.c
2011-12-22 11:27:31 -08:00
Junio C Hamano
e927c16751 Merge branch 'rs/diff-tree-combined-clean-up'
* rs/diff-tree-combined-clean-up:
  submodule: use diff_tree_combined_merge() instead of diff_tree_combined()
  pass struct commit to diff_tree_combined_merge()
  use struct sha1_array in diff_tree_combined()
2011-12-22 11:27:29 -08:00
Junio C Hamano
ced7469f07 Merge branch 'tr/grep-threading'
* tr/grep-threading:
  grep: disable threading in non-worktree case
  grep: enable threading with -p and -W using lazy attribute lookup
  grep: load funcname patterns for -W
2011-12-22 11:27:28 -08:00
Junio C Hamano
f35ccd9be2 Merge branch 'nd/war-on-nul-in-commit'
* nd/war-on-nul-in-commit:
  commit_tree(): refuse commit messages that contain NULs
  Convert commit_tree() to take strbuf as message
  merge: abort if fails to commit

Conflicts:
	builtin/commit.c
	commit.c
	commit.h
2011-12-22 11:27:26 -08:00
Junio C Hamano
23cb5bf3b3 i18n of multi-line advice messages
Advice messages are by definition meant for human end-users, and prime
candidates for i18n/l10n. They tend to also be more verbose to be helpful,
and need to be longer than just one line.

Although we do not have parameterized multi-line advice messages yet, once
we do, we cannot emit such a message like this:

    advise(_("Please rename %s to something else"), gostak);
    advise(_("so that we can avoid distimming %s unnecessarily."), doshes);

because some translations may need to have the replacement of 'gostak' on
the second line (or 'doshes' on the first line). Some languages may even
need to use three lines in order to fit the same message within a
reasonable width.

Instead, it has to be a single advise() construct, like this:

    advise(_("Please rename %s to something else\n"
             "so that we can avoid distimming %s unnecessarily."),
           gostak, doshes);

Update the advise() function and its existing callers to

 - take a format string that can be multi-line and translatable as a
   whole;
 - use the string and the parameters to form a localized message; and
 - show each line in the result with the localization of the "hint: ".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-22 11:21:26 -08:00
Junio C Hamano
e443bdfe1e Sync with v1.7.8.1 2011-12-21 12:02:44 -08:00
Junio C Hamano
406cc9b822 Merge branch 'bc/maint-apply-check-no-patch' into maint
* bc/maint-apply-check-no-patch:
  builtin/apply.c: report error on failure to recognize input
  t/t4131-apply-fake-ancestor.sh: fix broken test
2011-12-21 11:42:45 -08:00
Carlos Martín Nieto
a31275d6ff clone: the -o option has nothing to do with <branch>
It is to give an alternate <name> instead of "origin" to the remote
we are cloning from.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-21 11:26:30 -08:00
Michael Schubert
967cf9867d builtin/log: remove redundant initialization
"abbrev" and "commit_format" in struct rev_info get initialized in
init_revisions - no need to reinit in cmd_log_init_defaults.

Signed-off-by: Michael Schubert <mschub@elegosoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-21 11:15:56 -08:00
Junio C Hamano
f1f509cc45 Merge branch 'ms/commit-cc-option-helpstring' into maint
* ms/commit-cc-option-helpstring:
  builtin/commit: add missing '/' in help message
2011-12-21 10:50:20 -08:00
Ævar Arnfjörð Bjarmason
ab1900a36e Appease Sun Studio by renaming "tmpfile"
On Solaris the system headers define the "tmpfile" name, which'll
cause Git compiled with Sun Studio 12 Update 1 to whine about us
redefining the name:

    "pack-write.c", line 76: warning: name redefined by pragma redefine_extname declared static: tmpfile     (E_PRAGMA_REDEFINE_STATIC)
    "sha1_file.c", line 2455: warning: name redefined by pragma redefine_extname declared static: tmpfile    (E_PRAGMA_REDEFINE_STATIC)
    "fast-import.c", line 858: warning: name redefined by pragma redefine_extname declared static: tmpfile   (E_PRAGMA_REDEFINE_STATIC)
    "builtin/index-pack.c", line 175: warning: name redefined by pragma redefine_extname declared static: tmpfile    (E_PRAGMA_REDEFINE_STATIC)

Just renaming the "tmpfile" variable to "tmp_file" in the relevant
places is the easiest way to fix this.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-21 10:21:04 -08:00
Ævar Arnfjörð Bjarmason
d7a10c3140 Fix an enum assignment issue spotted by Sun Studio
In builtin/fast-export.c we'd assign to variables of the
tag_of_filtered_mode enum type with constants defined for the
signed_tag_mode enum.

We'd get the intended value since both the value we were assigning
with and the one we actually wanted had the same positional within
their respective enums, but doing it this way makes no sense.

This issue was spotted by Sun Studio 12 Update 1:

    "builtin/fast-export.c", line 54: warning: enum type mismatch: op "=" (E_ENUM_TYPE_MISMATCH_OP)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-21 10:19:04 -08:00
Junio C Hamano
3daff7c319 Merge branch 'maint'
* maint:
  builtin/init-db.c: eliminate -Wformat warning on Solaris
2011-12-20 16:34:20 -08:00
Ævar Arnfjörð Bjarmason
97f261b1e7 builtin/init-db.c: eliminate -Wformat warning on Solaris
On Solaris systems we'd warn about an implicit cast of mode_t when we
printed things out with the %d format. We'd get this warning under GCC
4.6.0 with Solaris headers:

    builtin/init-db.c: In function ‘separate_git_dir’:
    builtin/init-db.c:354:4: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘mode_t’ [-Wformat]

We've been doing this ever since v1.7.4.1-296-gb57fb80. Just work
around this by adding an explicit cast.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-20 16:02:08 -08:00
Junio C Hamano
4d466b69fe Merge branch 'jc/pull-signed-tag'
* jc/pull-signed-tag:
  commit: do not lose mergetag header when not amending
2011-12-20 13:24:12 -08:00
Junio C Hamano
0074d18dc0 commit: do not lose mergetag header when not amending
The earlier ed7a42a (commit: teach --amend to carry forward extra headers,
2011-11-08) broke "git merge/pull; edit to fix conflict; git commit"
workflow by forgetting that commit_tree_extended() takes the whole extra
header list.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-20 13:22:41 -08:00
Junio C Hamano
7f1068e21e Merge branch 'jc/checkout-m-twoway'
* jc/checkout-m-twoway:
  checkout_merged(): squelch false warning from some gcc
  Test 'checkout -m -- path'
  checkout -m: no need to insist on having all 3 stages
2011-12-19 16:06:22 -08:00
Junio C Hamano
b3ae9d8e57 Merge branch 'jk/fetch-no-tail-match-refs'
* jk/fetch-no-tail-match-refs:
  connect.c: drop path_match function
  fetch-pack: match refs exactly
  t5500: give fully-qualified refs to fetch-pack
  drop "match" parameter from get_remote_heads
2011-12-19 16:05:55 -08:00
Junio C Hamano
2e05710a16 Merge branch 'nd/resolve-ref'
* nd/resolve-ref:
  Rename resolve_ref() to resolve_ref_unsafe()
  Convert resolve_ref+xstrdup to new resolve_refdup function
  revert: convert resolve_ref() to read_ref_full()
2011-12-19 16:05:50 -08:00
Junio C Hamano
b8fc5abd73 Merge branch 'jn/maint-sequencer-fixes'
* jn/maint-sequencer-fixes:
  revert: stop creating and removing sequencer-old directory
  Revert "reset: Make reset remove the sequencer state"
  revert: do not remove state until sequence is finished
  revert: allow single-pick in the middle of cherry-pick sequence
  revert: pass around rev-list args in already-parsed form
  revert: allow cherry-pick --continue to commit before resuming
  revert: give --continue handling its own function
2011-12-19 16:05:45 -08:00
Junio C Hamano
b052781fef Merge branch 'jk/maint-mv'
* jk/maint-mv:
  mv: be quiet about overwriting
  mv: improve overwrite warning
  mv: make non-directory destination error more clear
  mv: honor --verbose flag
  docs: mention "-k" for both forms of "git mv"
2011-12-19 16:05:34 -08:00
Junio C Hamano
ab2fadefab Merge branch 'ci/stripspace-docs'
* ci/stripspace-docs:
  Update documentation for stripspace
2011-12-19 16:05:31 -08:00
Junio C Hamano
33e7fefef6 Merge branch 'tr/cache-tree'
* tr/cache-tree:
  reset: update cache-tree data when appropriate
  commit: write cache-tree data when writing index anyway
  Refactor cache_tree_update idiom from commit
  Test the current state of the cache-tree optimization
  Add test-scrap-cache-tree
2011-12-19 16:05:20 -08:00
Junio C Hamano
03f94ae9f9 Update jk/maint-strbuf-missing-init to builtin/ rename 2011-12-18 00:28:16 -08:00
René Scharfe
0041f09de6 use struct sha1_array in diff_tree_combined()
Maintaining an array of hashes is easier using sha1_array than
open-coding it.  This patch also fixes a leak of the SHA1 array
in  diff_tree_combined_merge().

Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-17 18:21:37 -08:00
Junio C Hamano
a2add8570c Merge branch 'jc/commit-amend-no-edit'
* jc/commit-amend-no-edit:
  test: commit --amend should honor --no-edit
  commit: honour --no-edit
  t7501 (commit): modernize style
  test: remove a porcelain test that hard-codes commit names
  test: add missing "&&" after echo command
2011-12-16 22:33:56 -08:00
Junio C Hamano
48b303675a Merge branch 'jc/stream-to-pack'
* jc/stream-to-pack:
  bulk-checkin: replace fast-import based implementation
  csum-file: introduce sha1file_checkpoint
  finish_tmp_packfile(): a helper function
  create_tmp_packfile(): a helper function
  write_pack_header(): a helper function

Conflicts:
	pack.h
2011-12-16 22:33:40 -08:00
Junio C Hamano
0bbaa5c076 Merge branch 'jk/upload-archive-use-start-command'
* jk/upload-archive-use-start-command:
  upload-archive: use start_command instead of fork
2011-12-16 22:33:30 -08:00
Thomas Rast
53b8d931b6 grep: disable threading in non-worktree case
Measurements by various people have shown that grepping in parallel is
not beneficial when the object store is involved.  For example, with a
simple regex:

  Threads     | --cached case            | worktree case
  ----------------------------------------------------------------
  8 (default) | 2.88u 0.21s 0:02.94real  | 0.19u 0.32s 0:00.16real
  4           | 2.89u 0.29s 0:02.99real  | 0.16u 0.34s 0:00.17real
  2           | 2.83u 0.36s 0:02.87real  | 0.18u 0.32s 0:00.26real
  NO_PTHREADS | 2.16u 0.08s 0:02.25real  | 0.12u 0.17s 0:00.31real

This happens because all the threads contend on read_sha1_mutex almost
all of the time.  A more complex regex allows the threads to do more
work in parallel, but as Jeff King found out, the "super boost" (much
higher clock when only one core is active) feature of recent CPUs
still causes the unthreaded case to win by a large margin.

So until the pack machinery allows unthreaded access, we disable
grep's threading in all but the worktree case.

Helped-by: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-16 15:47:25 -08:00
Thomas Rast
0579f91dd7 grep: enable threading with -p and -W using lazy attribute lookup
Lazily load the userdiff attributes in match_funcname().  Use a
separate mutex around this loading to protect the (not thread-safe)
attributes machinery.  This lets us re-enable threading with -p and
-W while reducing the overhead caused by looking up attributes.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-16 15:47:10 -08:00
Ramkumar Ramachandra
9e1313648d revert: simplify getting commit subject in format_todo()
format_todo() calls get_message(), but uses only the subject line of
the commit message.  As a minor optimization, save work and
unnecessary memory allocations by using find_commit_subject() instead.
Also, remove the unnecessary check on cur->item->buffer: the
lookup_commit_reference() call in parse_insn_line() has already made
sure of this.

Suggested-by: Jonathan Nieder <jrnieder@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 13:16:52 -08:00
Ramkumar Ramachandra
0db76962d1 revert: tolerate extra spaces, tabs in insn sheet
Tolerate extra spaces and tabs as part of the the field separator in
'.git/sequencer/todo', for people with fat fingers.

Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 13:15:46 -08:00
Ramkumar Ramachandra
6bc1a235b1 revert: make commit subjects in insn sheet optional
Change the instruction sheet format subtly so that the subject of the
commit message that follows the object name is optional.  As a result,
an instruction sheet like this is now perfectly valid:

  pick 35b0426
  pick fbd5bbcbc2e
  pick 7362160f

While at it, also fix a bug introduced by 5a5d80f4 (revert: Introduce
--continue to continue the operation, 2011-08-04) that failed to read
lines that are too long to fit on the commit-id-shaped buffer we
currently use; eliminate the need for the buffer altogether.  In
addition to literal SHA-1 hexes, you can now safely use expressions
like the following in the instruction sheet:

  featurebranch~4
  rr/revert-cherry-pick-continue^2~12@{12 days ago}

[jc: simplify parsing]

Suggested-by: Jonathan Nieder <jrnieder@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 13:14:49 -08:00
Ramkumar Ramachandra
bf3de2b373 revert: free msg in format_todo()
Memory allocated to the fields of msg by get_message() isn't freed.
This is potentially a big leak, because fresh memory is allocated to
store the commit message for each commit.  Fix this using
free_message().

Reported-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 13:00:22 -08:00
Nguyễn Thái Ngọc Duy
13f8b72d8c Convert commit_tree() to take strbuf as message
There wan't a way for commit_tree() to notice if the message the caller
prepared contained a NUL byte, as it did not take the length of the
message as a parameter. Use a pointer to a strbuf instead, so that we can
either choose to allow low-level plumbing commands to make commits that
contain NUL byte in its message, or forbid NUL everywhere by adding the
check in commit_tree(), in later patches.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 10:46:42 -08:00
Nguyễn Thái Ngọc Duy
6b3c4c0547 merge: abort if fails to commit
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 10:26:40 -08:00
Junio C Hamano
335c6e403d checkout_merged(): squelch false warning from some gcc
gcc 4.6.2 (there may be others) does not realize that the variable "mode"
can never be used uninitialized in this function and issues a false warning
under -Wuninitialized option.

Squelch it with an unnecessary initialization; it is not like a single
assignment matters to the performance in this codepath that writes out
to the filesystem with checkout_entry() anyway.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-15 10:10:11 -08:00
Junio C Hamano
b3f17ac3d6 Merge branch 'ks/tag-cleanup'
* ks/tag-cleanup:
  git-tag: introduce --cleanup option

Conflicts:
	builtin/tag.c
2011-12-13 23:07:47 -08:00
Junio C Hamano
b661a4bc1e Merge branch 'bc/maint-apply-check-no-patch'
* bc/maint-apply-check-no-patch:
  builtin/apply.c: report error on failure to recognize input
  t/t4131-apply-fake-ancestor.sh: fix broken test
2011-12-13 22:56:22 -08:00
Junio C Hamano
424f30a5ae Merge branch 'nd/ignore-might-be-precious'
* nd/ignore-might-be-precious:
  checkout,merge: disallow overwriting ignored files with --no-overwrite-ignore
2011-12-13 22:55:07 -08:00
Junio C Hamano
b2dd021120 Merge branch 'jn/branch-move-to-self'
* jn/branch-move-to-self:
  Allow checkout -B <current-branch> to update the current branch
  branch: allow a no-op "branch -M <current-branch> HEAD"
2011-12-13 22:53:08 -08:00
Junio C Hamano
9e6324c4d7 Merge branch 'maint'
* maint:
  Update draft release notes for 1.7.8.1
  Git 1.7.7.5
  Git 1.7.6.5
  blame: don't overflow time buffer
  fetch: create status table using strbuf

Conflicts:
	RelNotes
2011-12-13 22:18:00 -08:00
Junio C Hamano
2e8722fc9e Merge branch 'jc/maint-pack-object-cycle' into maint
* jc/maint-pack-object-cycle:
  pack-object: tolerate broken packs that have duplicated objects

Conflicts:
	builtin/pack-objects.c
2011-12-13 22:04:50 -08:00
Junio C Hamano
68f80f5490 Merge branch 'jc/index-pack-reject-dups' into maint
* jc/index-pack-reject-dups:
  receive-pack, fetch-pack: reject bogus pack that records objects twice
2011-12-13 22:03:36 -08:00
Junio C Hamano
df6246ed78 Merge branch 'nd/misc-cleanups' into maint
* nd/misc-cleanups:
  unpack_object_header_buffer(): clear the size field upon error
  tree_entry_interesting: make use of local pointer "item"
  tree_entry_interesting(): give meaningful names to return values
  read_directory_recursive: reduce one indentation level
  get_tree_entry(): do not call find_tree_entry() on an empty tree
  tree-walk.c: do not leak internal structure in tree_entry_len()
2011-12-13 22:02:51 -08:00
Junio C Hamano
8311158c66 Merge branch 'maint-1.7.7' into maint
* maint-1.7.7:
  Git 1.7.7.5
  Git 1.7.6.5
  blame: don't overflow time buffer
  fetch: create status table using strbuf
  checkout,merge: loosen overwriting untracked file check based on info/exclude
  cast variable in call to free() in builtin/diff.c and submodule.c
  apply: get rid of useless x < 0 comparison on a size_t type

Conflicts:
	Documentation/git.txt
	GIT-VERSION-GEN
	RelNotes
	builtin/fetch.c
2011-12-13 21:58:51 -08:00
Junio C Hamano
c0eb9ccfb9 Merge branch 'ab/clang-lints' into maint-1.7.7
* ab/clang-lints:
  cast variable in call to free() in builtin/diff.c and submodule.c
  apply: get rid of useless x < 0 comparison on a size_t type
2011-12-13 21:47:51 -08:00
Junio C Hamano
3b425656a4 Merge branch 'nd/maint-ignore-exclude' into maint-1.7.7
* nd/maint-ignore-exclude:
  checkout,merge: loosen overwriting untracked file check based on info/exclude
2011-12-13 21:47:08 -08:00
Junio C Hamano
7857e3246f Merge branch 'maint-1.7.6' into maint-1.7.7
* maint-1.7.6:
  Git 1.7.6.5
  blame: don't overflow time buffer
  fetch: create status table using strbuf

Conflicts:
	Documentation/git.txt
	GIT-VERSION-GEN
	RelNotes
2011-12-13 21:44:56 -08:00
Junio C Hamano
52b195f2b8 Merge branch 'jk/maint-fetch-status-table' into maint-1.7.6
* jk/maint-fetch-status-table:
  fetch: create status table using strbuf
2011-12-13 21:21:30 -08:00
Junio C Hamano
43176d1e4c Merge branch 'jc/maint-name-rev-all' into maint-1.7.6
* jc/maint-name-rev-all:
  name-rev --all: do not even attempt to describe non-commit object
2011-12-13 21:12:34 -08:00
Jeff King
c3ea051544 blame: don't overflow time buffer
When showing the raw timestamp, we format the numeric
seconds-since-epoch into a buffer, followed by the timezone
string. This string has come straight from the commit
object. A well-formed object should have a timezone string
of only a few bytes, but we could be operating on data
pushed by a malicious user.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-13 21:09:06 -08:00
Jeff King
1e7ba0f9ca fetch-pack: match refs exactly
When we are determining the list of refs to fetch via
fetch-pack, we have two sets of refs to compare: those on
the remote side, and a "match" list of things we want to
fetch. We iterate through the remote refs alphabetically,
seeing if each one is wanted by the "match" list.

Since def88e9 (Commit first cut at "git-fetch-pack",
2005-07-04), we have used the "path_match" function to do a
suffix match, where a remote ref is considered wanted if
any of the "match" elements is a suffix of the remote
refname.

This enables callers of fetch-pack to specify unqualified
refs and have them matched up with remote refs (e.g., ask
for "A" and get remote's "refs/heads/A"). However, if you
provide a fully qualified ref, then there are corner cases
where we provide the wrong answer. For example, given a
remote with two refs:

   refs/foo/refs/heads/master
   refs/heads/master

asking for "refs/heads/master" will first match
"refs/foo/refs/heads/master" by the suffix rule, and we will
erroneously fetch it instead of refs/heads/master.

As it turns out, all callers of fetch_pack do provide
fully-qualified refs for the match list. There are two ways
fetch_pack can get match lists:

  1. Through the transport code (i.e., via git-fetch)

  2. On the command-line of git-fetch-pack

In the first case, we will always be providing the names of
fully-qualified refs from "struct ref" objects. We will have
pre-matched those ref objects already (since we have to
handle more advanced matching, like wildcard refspecs), and
are just providing a list of the refs whose objects we need.

In the second case, users could in theory be providing
non-qualified refs on the command-line. However, the
fetch-pack documentation claims that refs should be fully
qualified (and has always done so since it was written in
2005).

Let's change this path_match call to simply check for string
equality, matching what the callers of fetch_pack are
expecting.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-13 10:17:50 -08:00
Jeff King
afe7c5ff1f drop "match" parameter from get_remote_heads
The get_remote_heads function reads the list of remote refs
during git protocol session. It dates all the way back to
def88e9 (Commit first cut at "git-fetch-pack", 2005-07-04).
At that time, the idea was to come up with a list of refs we
were interested in, and then filter the list as we got it
from the remote side.

Later, 1baaae5 (Make maximal use of the remote refs,
2005-10-28) stopped filtering at the get_remote_heads layer,
letting us use the non-matching refs to find common history.

As a result, all callers now simply pass an empty match
list (and any future callers will want to do the same). So
let's drop these now-useless parameters.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-13 10:08:24 -08:00
Nguyễn Thái Ngọc Duy
8cad4744ee Rename resolve_ref() to resolve_ref_unsafe()
resolve_ref() may return a pointer to a shared buffer and can be
overwritten by the next resolve_ref() calls. Callers need to
pay attention, not to keep the pointer when the next call happens.

Rename with "_unsafe" suffix to warn developers (or reviewers) before
introducing new call sites.

This patch is generated using the following command

git grep -l 'resolve_ref(' -- '*.[ch]'|xargs sed -i 's/resolve_ref(/resolve_ref_unsafe(/g'

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-13 09:39:46 -08:00
Nguyễn Thái Ngọc Duy
96ec7b1e70 Convert resolve_ref+xstrdup to new resolve_refdup function
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-13 09:26:52 -08:00
Conrad Irwin
497215d881 Update documentation for stripspace
Tell the user what this command is intended for, and expand the
description of what it does.

Signed-off-by: Conrad Irwin <conrad.irwin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 16:48:54 -08:00
Jeff King
534376ca04 mv: be quiet about overwriting
When a user asks us to force a mv and overwrite the
destination, we print a warning. However, since a typical
use would be:

  $ git mv one two
  fatal: destination exists, source=one, destination=two
  $ git mv -f one two
  warning: overwriting 'two'

this warning is just noise. We already know we're
overwriting; that's why we gave -f!

This patch silences the warning unless "--verbose" is given.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 15:43:45 -08:00
Jeff King
cd40b05d13 mv: improve overwrite warning
When we try to "git mv" over an existing file, the error
message is fairly informative:

  $ git mv one two
  fatal: destination exists, source=one, destination=two

When the user forces the overwrite, we give a warning:

  $ git mv -f one two
  warning: destination exists; will overwrite!

This is less informative, but still sufficient in the simple
rename case, as there is only one rename happening.

But when moving files from one directory to another, it
becomes useless:

  $ mkdir three
  $ touch one two three/one
  $ git add .
  $ git mv one two three
  fatal: destination exists, source=one, destination=three/one
  $ git mv -f one two three
  warning: destination exists; will overwrite!

The first message is helpful, but the second one gives us no
clue about what was overwritten. Let's mention the name of
the destination file:

  $ git mv -f one two three
  warning: overwriting 'three/one'

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 15:43:38 -08:00
Jonathan Nieder
d596118d7a revert: stop creating and removing sequencer-old directory
Now that "git reset" no longer implicitly removes .git/sequencer that
the operator may or may not have wanted to keep, the logic to write a
backup copy of .git/sequencer and remove it when stale is not needed
any more.  Simplify the sequencer API and repository layout by
dropping it.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:33:53 -08:00
Jonathan Nieder
218b65fbf9 revert: do not remove state until sequence is finished
As v1.7.8-rc0~141^2~4 (2011-08-04) explains, git cherry-pick removes
the sequencer state just before applying the final patch.  In the
single-pick case, that was a good thing, since --abort and --continue
work fine without access to such state and removing it provides a
signal that git should not complain about the need to clobber it ("a
cherry-pick or revert is already in progress") in sequences like the
following:

	git cherry-pick foo
	git read-tree -m -u HEAD; # forget that; let's try a different one
	git cherry-pick bar

After the recent patch "allow single-pick in the middle of cherry-pick
sequence" we don't need that hack any more.  In the new regime, a
traditional "git cherry-pick <commit>" command never looks at
.git/sequencer, so we do not need to cripple "git cherry-pick
<commit>..<commit>" for it any more.

So now you can run "git cherry-pick --abort" near the end of a
multi-pick sequence and it will abort the entire sequence, instead of
misbehaving and aborting just the final commit.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:33:53 -08:00
Jonathan Nieder
7acaaac275 revert: allow single-pick in the middle of cherry-pick sequence
After messing up a difficult conflict resolution in the middle of a
cherry-pick sequence, it can be useful to be able to

	git checkout HEAD . && git cherry-pick that-one-commit

to restart the conflict resolution. The current code however errors out
saying that another cherry-pick is already in progress.

Suggested-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:32:16 -08:00
Jonathan Nieder
7f13334e07 revert: pass around rev-list args in already-parsed form
Since 7e2bfd3f (revert: allow cherry-picking more than one commit,
2010-07-02), the pick/revert machinery has kept track of the set of
commits to be cherry-picked or reverted using commit_argc and
commit_argv variables, storing the corresponding command-line
parameters.

Future callers as other commands are built in (am, rebase, sequencer)
may find it easier to pass rev-list options to this machinery in
already-parsed form.  Teach cmd_cherry_pick and cmd_revert to parse
the rev-list arguments in advance and pass the commit set to
pick_revisions() as a rev_info structure.

Original patch by Jonathan, tweaks and test from Ram.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Improved-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:32:16 -08:00
Jonathan Nieder
093a309136 revert: allow cherry-pick --continue to commit before resuming
When "git cherry-pick ..bar" encounters conflicts, permit the operator
to use cherry-pick --continue after resolving them as a shortcut for
"git commit && git cherry-pick --continue" to record the resolution
and carry on with the rest of the sequence.

This improves the analogy with "git rebase" (in olden days --continue
was the way to preserve authorship when a rebase encountered
conflicts) and fits well with a general UI goal of making "git cmd
--continue" save humans the trouble of deciding what to do next.

Example: after encountering a conflict from running "git cherry-pick
foo bar baz":

	CONFLICT (content): Merge conflict in main.c
	error: could not apply f78a8d98c... bar!
	hint: after resolving the conflicts, mark the corrected paths
	hint: with 'git add <paths>' or 'git rm <paths>'
	hint: and commit the result with 'git commit'

We edit main.c to resolve the conflict, mark it acceptable with "git
add main.c", and can run "cherry-pick --continue" to resume the
sequence.

	$ git cherry-pick --continue
	[editor opens to confirm commit message]
	[master 78c8a8c98] bar!
	 1 files changed, 1 insertions(+), 1 deletions(-)
	[master 87ca8798c] baz!
	 1 files changed, 1 insertions(+), 1 deletions(-)

This is done for both codepaths to pick multiple commits and a single
commit.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:31:32 -08:00
Jonathan Nieder
1df9bf46d6 revert: give --continue handling its own function
This makes pick_revisions() a little shorter and easier to read
straight through.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 13:06:36 -08:00
Jeff King
77471646d3 mv: make non-directory destination error more clear
If you try to "git mv" multiple files onto another
non-directory file, you confusingly get the "usage" message:

  $ touch one two three
  $ git add .
  $ git mv one two three
  usage: git mv [options] <source>... <destination>
  [...]

From the user's perspective, that makes no sense. They just
gave parameters that exactly match that usage!

This behavior dates back to the original C version of "git
mv", which had a usage message like:

  usage: git mv (<source> <destination> | <source>...  <destination>)

This was slightly less confusing, because it at least
mentions that there are two ways to invoke (but it still
isn't clear why what the user provided doesn't work).

Instead, let's show an error message like:

  $ git mv one two three
  fatal: destination 'three' is not a directory

We could leave the usage message in place, too, but it
doesn't actually help here. It contains no hints that there
are two forms, nor that multi-file form requires that the
endpoint be a directory. So it just becomes useless noise
that distracts from the real error.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 11:55:46 -08:00
Jeff King
07b8738967 mv: honor --verbose flag
The code for a verbose flag has been here since "git mv" was
converted to C many years ago, but actually getting the "-v"
flag from the command line was accidentally lost in the
transition.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 11:52:31 -08:00
Nguyễn Thái Ngọc Duy
e4776bd936 revert: convert resolve_ref() to read_ref_full()
This is the follow up of c689332 (Convert many resolve_ref() calls to
read_ref*() and ref_exists() - 2011-11-13). See the said commit for
rationale.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-12 09:30:23 -08:00
Jeff King
5914f2d057 fetch: create status table using strbuf
When we fetch from a remote, we print a status table like:

  From url
   * [new branch]   foo -> origin/foo

We create this table in a static buffer using sprintf. If
the remote refnames are long, they can overflow this buffer
and smash the stack.

Instead, let's use a strbuf to build the string.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-09 23:17:00 -08:00
Junio C Hamano
b7f7c07977 Merge branch 'nd/resolve-ref'
* nd/resolve-ref:
  Copy resolve_ref() return value for longer use
  Convert many resolve_ref() calls to read_ref*() and ref_exists()

Conflicts:
	builtin/fmt-merge-msg.c
	builtin/merge.c
	refs.c
2011-12-09 13:37:14 -08:00
Junio C Hamano
eb8aa3d2c2 Merge branch 'jc/pull-signed-tag'
* jc/pull-signed-tag:
  commit-tree: teach -m/-F options to read logs from elsewhere
  commit-tree: update the command line parsing
  commit: teach --amend to carry forward extra headers
  merge: force edit and no-ff mode when merging a tag object
  commit: copy merged signed tags to headers of merge commit
  merge: record tag objects without peeling in MERGE_HEAD
  merge: make usage of commit->util more extensible
  fmt-merge-msg: Add contents of merged tag in the merge message
  fmt-merge-msg: package options into a structure
  fmt-merge-msg: avoid early returns
  refs DWIMmery: use the same rule for both "git fetch" and others
  fetch: allow "git fetch $there v1.0" to fetch a tag
  merge: notice local merging of tags and keep it unwrapped
  fetch: do not store peeled tag object names in FETCH_HEAD
  Split GPG interface into its own helper library

Conflicts:
	builtin/fmt-merge-msg.c
	builtin/merge.c
2011-12-09 13:37:09 -08:00
Junio C Hamano
a4043aeafe Merge branch 'jc/request-pull-show-head-4'
* jc/request-pull-show-head-4:
  request-pull: use the annotated tag contents
  fmt-merge-msg.c: Fix an "dubious one-bit signed bitfield" sparse error
  environment.c: Fix an sparse "symbol not declared" warning
  builtin/log.c: Fix an "Using plain integer as NULL pointer" warning
  fmt-merge-msg: use branch.$name.description
  request-pull: use the branch description
  request-pull: state what commit to expect
  request-pull: modernize style
  branch: teach --edit-description option
  format-patch: use branch description in cover letter
  branch: add read_branch_desc() helper function

Conflicts:
	builtin/branch.c
2011-12-09 13:37:05 -08:00
Kirill A. Shutemov
d3e0598330 git-tag: introduce --cleanup option
Normally git tag strips tag message lines starting with '#', trailing
spaces from every line and empty lines from the beginning and end.

--cleanup allows to select different cleanup modes for tag message.
It provides the same interface as --cleanup option in git-commit.

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-09 09:39:30 -08:00
Junio C Hamano
ca1ba20102 commit: honour --no-edit
After making fixes to the contents to be committed, it is not unusual to
update the current commit without rewording the message. Idioms to tell
"commit --amend" that we do not need an editor have been:

    $ EDITOR=: git commit --amend
    $ git commit --amend -C HEAD

but that was only because a more natural "--no-edit" option in

    $ git commit --amend --no-edit

was not honoured.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-08 15:25:30 -08:00
Thomas Rast
6c52ec8a9a reset: update cache-tree data when appropriate
In the case of --mixed and --hard, we throw away the old index and
rebuild everything from the tree argument (or HEAD).  So we have an
opportunity here to fill in the cache-tree data, just as read-tree
did.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-06 15:13:39 -08:00
Thomas Rast
11c8a74a64 commit: write cache-tree data when writing index anyway
In prepare_index(), we refresh the index, and then write it to disk if
this changed the index data.  After running hooks we re-read the index
and compute the root tree sha1 with the cache-tree machinery.

This gives us a mostly free opportunity to write up-to-date cache-tree
data: we can compute it in prepare_index() immediately before writing
the index to disk.

If we do this, we were going to write the index anyway, and the later
cache-tree update has no further work to do.  If we don't do it, we
don't do any extra work, though we still don't have have cache-tree
data after the commit.

The only case that suffers badly is when the pre-commit hook changes
many trees in the index.  I'm writing this off as highly unusual.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-06 14:58:53 -08:00
Thomas Rast
996277c520 Refactor cache_tree_update idiom from commit
We'll need to safely create or update the cache-tree data of the_index
from other places.  While at it, give it an argument that lets us
silence the messages produced by unmerged entries (which prevent it
from working).

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-06 14:57:36 -08:00
Junio C Hamano
fbbccd0a10 checkout -m: no need to insist on having all 3 stages
The content level merge machinery ll_merge() is prepared to merge
correctly in "both sides added differently" case by using an empty blob as
if it were the common ancestor. "checkout -m" could do the same, but didn't
bother supporting it and instead insisted on having all three stages.

Reported-by: Pete Harlan
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-06 14:17:01 -08:00
Nguyễn Thái Ngọc Duy
d5a35c114a Copy resolve_ref() return value for longer use
resolve_ref() may return a pointer to a static buffer. Callers that
use this value longer than a couple of statements should copy the
value to avoid some hidden resolve_ref() call that may change the
static buffer's value.

The bug found by Tony Wang <wwwjfy@gmail.com> in builtin/merge.c
demonstrates this. The first call is in cmd_merge()

branch = resolve_ref("HEAD", head_sha1, 0, &flag);

Then deep in lookup_commit_or_die() a few lines after, resolve_ref()
may be called again and destroy "branch".

lookup_commit_or_die
 lookup_commit_reference
  lookup_commit_reference_gently
   parse_object
    lookup_replace_object
     do_lookup_replace_object
      prepare_replace_object
       for_each_replace_ref
        do_for_each_ref
         get_loose_refs
          get_ref_dir
           get_ref_dir
            resolve_ref

All call sites are checked and made sure that xstrdup() is called if
the value should be saved.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-05 16:21:06 -08:00
Junio C Hamano
9ef569791f Merge branch 'nd/maint-ignore-exclude'
* nd/maint-ignore-exclude:
  checkout,merge: loosen overwriting untracked file check based on info/exclude
2011-12-05 15:25:12 -08:00
Junio C Hamano
ce8781e8ab Merge branch 'vr/git-merge-default-to-upstream'
* vr/git-merge-default-to-upstream:
  Show error for 'git merge' with unset merge.defaultToUpstream
2011-12-05 15:24:14 -08:00
Junio C Hamano
cddec4f8ae Merge branch 'jc/maint-pack-object-cycle'
* jc/maint-pack-object-cycle:
  pack-object: tolerate broken packs that have duplicated objects

Conflicts:
	builtin/pack-objects.c
2011-12-05 15:19:34 -08:00
Junio C Hamano
33fba9c64e Merge branch 'jc/index-pack-reject-dups'
* jc/index-pack-reject-dups:
  receive-pack, fetch-pack: reject bogus pack that records objects twice
2011-12-05 15:13:42 -08:00
Junio C Hamano
e72c1dd3bd Merge branch 'ab/clang-lints'
* ab/clang-lints:
  cast variable in call to free() in builtin/diff.c and submodule.c
  apply: get rid of useless x < 0 comparison on a size_t type
2011-12-05 15:12:34 -08:00
Junio C Hamano
7b1baed3fb Merge branch 'nd/prune-progress'
* nd/prune-progress:
  reachable: per-object progress
  prune: handle --progress/no-progress
  prune: show progress while marking reachable objects
2011-12-05 15:11:11 -08:00
Junio C Hamano
d7194d318b Merge branch 'nd/fsck-progress'
* nd/fsck-progress:
  fsck: print progress
  fsck: avoid reading every object twice
  verify_packfile(): check as many object as possible in a pack
  fsck: return error code when verify_pack() goes wrong
2011-12-05 15:11:07 -08:00
Junio C Hamano
62cdb6b23a Merge branch 'nd/misc-cleanups'
* nd/misc-cleanups:
  unpack_object_header_buffer(): clear the size field upon error
  tree_entry_interesting: make use of local pointer "item"
  tree_entry_interesting(): give meaningful names to return values
  read_directory_recursive: reduce one indentation level
  get_tree_entry(): do not call find_tree_entry() on an empty tree
  tree-walk.c: do not leak internal structure in tree_entry_len()
2011-12-05 15:10:20 -08:00
Junio C Hamano
b1af9630d7 Merge branch 'maint-1.7.7' into maint
* maint-1.7.7:
  stripspace: fix outdated comment
  Add MYMETA.yml to perl/.gitignore
2011-12-05 15:07:54 -08:00
Junio C Hamano
c34ba9967c Merge branch 'maint-1.7.6' into maint-1.7.7
* maint-1.7.6:
  stripspace: fix outdated comment
  Add MYMETA.yml to perl/.gitignore
2011-12-05 15:07:49 -08:00
Jeff King
c2857fb8b7 stripspace: fix outdated comment
The comment on top of stripspace() claims that the buffer
will no longer be NUL-terminated. However, this has not been
the case at least since the move to using strbuf in 2007.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-05 15:04:38 -08:00
Brandon Casey
cc64b318f2 builtin/apply.c: report error on failure to recognize input
When git apply is passed something that is not a patch, it does not produce
an error message or exit with a non-zero status if it was not actually
"applying" the patch i.e. --check or --numstat etc were supplied on the
command line.

Fix this by producing an error when apply fails to find any hunks whatsoever
while parsing the patch.

This will cause some of the output formats (--numstat, --diffstat, etc) to
produce an error when they formerly would have reported zero changes and
exited successfully.  That seems like the correct behavior though.  Failure
to recognize the input as a patch should be an error.

Plus, add a test.

Reported-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-05 11:20:50 -08:00
Junio C Hamano
568508e765 bulk-checkin: replace fast-import based implementation
This extends the earlier approach to stream a large file directly from the
filesystem to its own packfile, and allows "git add" to send large files
directly into a single pack. Older code used to spawn fast-import, but the
new bulk-checkin API replaces it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-01 11:46:09 -08:00
Jonathan Nieder
39bd6f7261 Allow checkout -B <current-branch> to update the current branch
When on master, "git checkout -B master <commit>" is a more natural way to
say "git reset --keep <commit>", which was originally invented for the
exact purpose of moving to the named commit while keeping the local changes
around.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-28 11:40:46 -08:00
Jonathan Nieder
3f59481e33 branch: allow a no-op "branch -M <current-branch> HEAD"
Overwriting the current branch with a different commit is forbidden, as it
will make the status recorded in the index and the working tree out of
sync with respect to the HEAD. There however is no reason to forbid it if
the current branch is renamed to itself, which admittedly is something
only an insane user would do, but is handy for scripts.

Test script is by Conrad Irwin.

Reported-by: Soeren Sonnenburg <sonne@debian.org>
Reported-by: Josh Chia (谢任中)
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Conrad Irwin <conrad.irwin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-28 11:40:46 -08:00
Nguyễn Thái Ngọc Duy
c1d7036b6b checkout,merge: disallow overwriting ignored files with --no-overwrite-ignore
Ignored files usually are generated files (e.g. .o files) and can be
safely discarded. However sometimes users may have important files in
working directory, but still want a clean "git status", so they mark
them as ignored files. But in this case, these files should not be
overwritten without asking first.

Enable this use case with --no-overwrite-ignore, where git only sees
tracked and untracked files, no ignored files. Those who mix
discardable ignored files with important ones may have to sort it out
themselves.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-28 10:41:53 -08:00
Junio C Hamano
f44054c82f Merge branch 'nd/maint-ignore-exclude' into nd/ignore-might-be-precious
* nd/maint-ignore-exclude:
  checkout,merge: loosen overwriting untracked file check based on info/exclude
2011-11-28 10:41:43 -08:00
Nguyễn Thái Ngọc Duy
fc001b526c checkout,merge: loosen overwriting untracked file check based on info/exclude
Back in 1127148 (Loosen "working file will be lost" check in
Porcelain-ish - 2006-12-04), git-checkout.sh learned to quietly
overwrite ignored files. Howver the code only took .gitignore files
into account.

Standard ignored files include all specified in .gitignore files in
working directory _and_ $GIT_DIR/info/exclude. This patch makes sure
ignored files in info/exclude can also be overwritten automatically in
the spirit of the original patch.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-28 10:37:50 -08:00
Vincent van Ravesteijn
5cd75c7d8d builtin-branch: Fix crash on invalid use of --force
The option --force should not put us in 'create branch' mode. The
fact that this option is only valid in 'create branch' mode is
already caught by the the next 'if' in which we assure that we
are in the correct mode.

Without this patch, "git branch -f" without any other argument ends
up calling create_branch without any branch name.

Signed-off-by: Vincent van Ravesteijn <vfr@lyx.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-23 13:23:33 -08:00
Jonathan Nieder
b15aa973b2 revert --abort: do not leave behind useless sequencer-old directory
The "git cherry-pick --abort" command currently renames the
.git/sequencer directory to .git/sequencer-old instead of removing it
on success due to an accident.  cherry-pick --abort is designed to
work in three steps:

 1) find which commit to roll back to
 2) call "git reset --merge <commit>" to move to that commit
 3) remove the .git/sequencer directory

But the careless author forgot step 3 entirely.  The only reason the
command worked anyway is that "git reset --merge <commit>" renames the
.git/sequencer directory as a secondary effect --- after moving to
<commit>, or so the logic goes, it is unlikely but possible that the
caller of git reset wants to continue the series of cherry-picks that
was in progress, so git renames the sequencer state to
.git/sequencer-old to be helpful while allowing the cherry-pick to be
resumed if the caller did not want to end the sequence after all.

By running "git cherry-pick --abort", the operator has clearly
indicated that she is not planning to continue cherry-picking.  Remove
the (renamed) .git/sequencer directory as intended all along.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-23 10:56:29 -08:00
Johannes Sixt
2a4037d0a7 Fix revert --abort on Windows
On Windows, it is not possible to rename or remove a directory that has
open files. 'revert --abort' renamed .git/sequencer when it still had
.git/sequencer/head open. Close the file as early as possible to allow
the rename operation on Windows.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-23 10:54:57 -08:00
Nguyễn Thái Ngọc Duy
b4524d343b revert: do not pass non-literal string as format to git_path()
This fixes the following warning.

    CC builtin/revert.o
builtin/revert.c: In function ‘write_cherry_pick_head’:
builtin/revert.c:311: warning: format not a string literal and no format arguments

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-23 09:29:53 -08:00
Jonathan Nieder
c427b211b3 revert: remove --reset compatibility option
Remove the "git cherry-pick --reset" option, which has a different
preferred spelling nowadays ("--quit").  Luckily the old --reset name
was not around long enough for anyone to get used to it.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 18:18:02 -08:00
Jonathan Nieder
539047c19e revert: introduce --abort to cancel a failed cherry-pick
After running some ill-advised command like "git cherry-pick
HEAD..linux-next", the bewildered novice may want to return to more
familiar territory.  Introduce a "git cherry-pick --abort" command
that rolls back the entire cherry-pick sequence and places the
repository back on solid ground.

Just like "git merge --abort", this internally uses "git reset
--merge", so local changes not involved in the conflict resolution are
preserved.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 18:16:59 -08:00
Jonathan Nieder
82433cdf4d revert: write REVERT_HEAD pseudoref during conflicted revert
When conflicts are encountered while reverting a commit, it can be
handy to have the name of that commit easily available.  For example,
to produce a copy of the patch to refer to while resolving conflicts:

	$ git revert 2eceb2a8
	error: could not revert 2eceb2a8... awesome, buggy feature
	$ git show -R REVERT_HEAD >the-patch
	$ edit $(git diff --name-only)

Set a REVERT_HEAD pseudoref when "git revert" does not make a commit,
for cases like this.  This also makes it possible for scripts to
distinguish between a revert that encountered conflicts and other
sources of an unmerged index.

After successfully committing, resetting with "git reset", or moving
to another commit with "git checkout" or "git reset", the pseudoref is
no longer useful, so remove it.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 13:34:44 -08:00
Jonathan Nieder
b8c74690b2 revert: improve error message for cherry-pick during cherry-pick
In the spirit of v1.6.3.3~3^2 (refuse to merge during a merge,
2009-07-01), "git cherry-pick" refuses to start a new cherry-pick when
in the middle of an existing conflicted cherry-pick in the following
sequence:

 1. git cherry-pick HEAD..origin
 2. resolve conflicts
 3. git cherry-pick HEAD..origin (instead of "git cherry-pick
    --continue", by mistake)

Good.  However, the error message on attempting step 3 is more
convoluted than necessary:

  $ git cherry-pick HEAD..origin
  error: .git/sequencer already exists.
  error: A cherry-pick or revert is in progress.
  hint: Use --continue to continue the operation
  hint: or --quit to forget about it
  fatal: cherry-pick failed

Clarify by removing the redundant first "error:" message, simplifying
the advice, and using lower-case and no full stops to be consistent
with other commands that prefix their messages with "error:", so it
becomes

  error: a cherry-pick or revert is already in progress
  hint: try "git cherry-pick (--continue | --quit)"
  fatal: cherry-pick failed

The "fatal: cherry-pick failed" line seems unnecessary, too, but
that can be fixed some other day.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 13:33:49 -08:00
Jonathan Nieder
dffc860028 revert: rearrange pick_revisions() for clarity
Deal completely with "cherry-pick --quit" and --continue at the
beginning of pick_revisions(), leaving the rest of the function for
the more interesting "git cherry-pick <commits>" case.

No functional change intended.  The impact is just to unindent the
code a little.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 13:33:01 -08:00
Jonathan Nieder
f80a87262a revert: rename --reset option to --quit
The option to "git cherry-pick" and "git revert" to discard the
sequencer state introduced by v1.7.8-rc0~141^2~6 (revert: Introduce
--reset to remove sequencer state, 2011-08-04) has a confusing name.
Change it now, while we still have the time.

The new name for "cherry-pick, please get out of my way, since I've
long forgotten about the sequence of commits I was cherry-picking when
you wrote that old .git/sequencer directory" is --quit.  Mnemonic:
this is analagous to quiting a program the user is no longer using ---
we just want to get out of the multiple-command cherry-pick procedure
and not to reset HEAD or rewind any other old state.

The "--reset" option is kept as a synonym to minimize the impact.  We
might consider dropping it for simplicity in a separate patch, though.

Adjust documentation and tests to use the newly preferred name (--quit)
instead of --reset.  While at it, let's clarify the short descriptions
of these operations in "-h" output.

Before:

	--reset		forget the current operation
	--continue	continue the current operation

After:

	--quit		end revert or cherry-pick sequence
	--continue	resume revert or cherry-pick sequence

Noticed-by: Phil Hord <phil.hord@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-22 13:30:35 -08:00
Jeff King
1bc01efed1 upload-archive: use start_command instead of fork
The POSIX-function fork is not supported on Windows. Use our
start_command API instead, respawning ourselves in a special
"writer" mode to follow the alternate code path.

Remove the NOT_MINGW-prereq for t5000, as git-archive --remote
now works.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-21 14:32:40 -08:00
Vincent van Ravesteijn
5480207c4e Show error for 'git merge' with unset merge.defaultToUpstream
'git merge' can be called without any arguments if merge.defaultToUpstream
is set. However, when merge.defaultToUpstream is not set, the user will be
presented the usage information as if he entered a command with a wrong
syntaxis. Ironically, the usage information confirms that no arguments are
mandatory.

This adds a proper error message telling the user why the command failed. As
a side-effect this can help the user in discovering the possibility to merge
with the upstream branch by setting merge.defaultToUpstream.

Signed-off-by: Vincent van Ravesteijn <vfr@lyx.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-21 09:29:06 -08:00
Junio C Hamano
4c00c852b3 Sync with 1.7.7.4 2011-11-18 11:30:02 -08:00
Junio C Hamano
c9de921848 Merge branch 'jc/maint-name-rev-all' into maint
* jc/maint-name-rev-all:
  name-rev --all: do not even attempt to describe non-commit object
2011-11-18 11:14:16 -08:00
Jonathan Nieder
418c9b176c do not let git_path clobber errno when reporting errors
Because git_path() calls vsnprintf(), code like

	fd = open(git_path("SQUASH_MSG"), O_WRONLY | O_CREAT, 0666);
	die_errno(_("Could not write to '%s'"), git_path("SQUASH_MSG"));

can end up printing an error indicator from vsnprintf() instead of
open() by mistake.  Store the path we are trying to write to in a
temporary variable and pass _that_ to die_errno(), so the messages
written by git cherry-pick/revert and git merge can avoid this source
of confusion.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-17 15:06:27 -08:00
Junio C Hamano
f63c79dbc8 pack-object: tolerate broken packs that have duplicated objects
When --reuse-delta is in effect (which is the default), and an existing
pack in the repository has the same object registered twice (e.g. one copy
in a non-delta format and the other copy in a delta against some other
object), an attempt to repack the repository can result in a cyclic delta
dependency, causing write_one() function to infinitely recurse into
itself.

Detect such a case and break the loopy dependency by writing out an object
that is involved in such a loop in the non-delta format.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-16 22:06:08 -08:00
Junio C Hamano
68be2fea50 receive-pack, fetch-pack: reject bogus pack that records objects twice
When receive-pack & fetch-pack are run and store the pack obtained over
the wire to a local repository, they internally run the index-pack command
with the --strict option. Make sure that we reject incoming packfile that
records objects twice to avoid spreading such a damage.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-16 22:05:21 -08:00
Ramkumar Ramachandra
5e1e6b93d0 revert: prettify fatal messages
Some of the fatal messages printed by revert and cherry-pick look ugly
like the following:

  fatal: Could not open .git/sequencer/todo.: No such file or directory

The culprit here is that these callers of the die_errno() function did not
take it into account that the message string they give to it is followed
by ": <strerror>", hence the message typically should not end with the
full-stop.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-15 16:59:46 -08:00
Junio C Hamano
f0c7fd49c0 Revert "upload-archive: use start_command instead of fork"
This reverts commit c09cd77ea2, expecting a
better version to be rerolled soon.
2011-11-15 15:39:33 -08:00
Nguyễn Thái Ngọc Duy
c689332391 Convert many resolve_ref() calls to read_ref*() and ref_exists()
resolve_ref() may return a pointer to a static buffer, which is not
safe for long-term use because if another resolve_ref() call happens,
the buffer may be changed.  Many call sites though do not care about
this buffer. They simply check if the return value is NULL or not.

Convert all these call sites to new wrappers to reduce resolve_ref()
calls from 57 to 34. If we change resolve_ref() prototype later on
to avoid passing static buffer out, this helps reduce changes.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-13 12:21:06 -08:00
Junio C Hamano
ba3c69a9ee commit: teach --gpg-sign option
This uses the gpg-interface.[ch] to allow signing the commit, i.e.

    $ git commit --gpg-sign -m foo
    You need a passphrase to unlock the secret key for
    user: "Junio C Hamano <gitster@pobox.com>"
    4096-bit RSA key, ID 96AFE6CB, created 2011-10-03 (main key ID 713660A7)

    [master 8457d13] foo
     1 files changed, 1 insertions(+), 0 deletions(-)

The lines of GPG detached signature are placed in a new multi-line header
field, instead of tucking the signature block at the end of the commit log
message text (similar to how signed tag is done), for multiple reasons:

 - The signature won't clutter output from "git log" and friends if it is
   in the extra header. If we place it at the end of the log message, we
   would need to teach "git log" and friends to strip the signature block
   with an option.

 - Teaching new versions of "git log" and "gitk" to optionally verify and
   show signatures is cleaner if we structurally know where the signature
   block is (instead of scanning in the commit log message).

 - The signature needs to be stripped upon various commit rewriting
   operations, e.g. rebase, filter-branch, etc. They all already ignore
   unknown headers, but if we place signature in the log message, all of
   these tools (and third-party tools) also need to learn how a signature
   block would look like.

 - When we added the optional encoding header, all the tools (both in tree
   and third-party) that acts on the raw commit object should have been
   fixed to ignore headers they do not understand, so it is not like that
   new header would be more likely to break than extra text in the commit.

A commit made with the above sample sequence would look like this:

    $ git cat-file commit HEAD
    tree 3cd71d90e3db4136e5260ab54599791c4f883b9d
    parent b87755351a47b09cb27d6913e6e0e17e6254a4d4
    author Junio C Hamano <gitster@pobox.com> 1317862251 -0700
    committer Junio C Hamano <gitster@pobox.com> 1317862251 -0700
    gpgsig -----BEGIN PGP SIGNATURE-----
     Version: GnuPG v1.4.10 (GNU/Linux)

     iQIcBAABAgAGBQJOjPtrAAoJELC16IaWr+bL4TMP/RSe2Y/jYnCkds9unO5JEnfG
     ...
     =dt98
     -----END PGP SIGNATURE-----

    foo

but "git log" (unless you ask for it with --pretty=raw) output is not
cluttered with the signature information.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-12 22:27:37 -08:00
Junio C Hamano
96b8d93a53 commit-tree: teach -m/-F options to read logs from elsewhere
Just like "git commit" does.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-12 22:25:07 -08:00
Junio C Hamano
dc865af65f Merge branch 'ly/mktree-using-strbuf'
* ly/mktree-using-strbuf:
  mktree: fix a memory leak in write_tree()
2011-11-11 21:34:06 -08:00
Junio C Hamano
c444c16589 Merge "Move 'builtin-*' into a 'builtin/' subdirectory" 2011-11-10 09:10:51 -08:00
Junio C Hamano
79a9312cc9 commit-tree: update the command line parsing
We have kept the original "git commit-tree <tree> -p <parent> ..." syntax
forever, but "git commit-tree -p <parent> -p <parent> ... <tree>" would be
more intuitive way to spell it. Dashed flags along with their arguments
come first and then the "thing" argument after the flags.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-09 22:27:17 -08:00