Mark Levedahl [Thu, 1 Feb 2007 13:46:38 +0000 (08:46 -0500)]
Make gitk work reasonably well on Cygwin.
The gitk gui layout was completely broken on Cygwin. If gitk was started
without previous geometry in ~/.gitk, the user could drag the window sashes
to get a useable layout. However, if ~/.gitk existed, this was not possible
at all.
The fix was to rewrite makewindow, changing the toplevel containers and
the particular geometry information saved between sessions. Numerous bugs
in both the Cygwin and the Linux Tk versions make this a delicate
balancing act: the version here works in both but many subtle variants
are competely broken in one or the other environment.
Three user visible changes result:
1 - The viewer is fully functional under Cygwin.
2 - The search bar moves from the bottom to the top of the lower left
pane. This was necessary to get around a layout problem on Cygwin.
3 - The window size and position is saved and restored between sessions.
Again, this is necessary to get around a layout problem on Cygwin.
Signed-off-by: Mark Levedahl <mdl123@verizon.net>
Mark Levedahl [Thu, 1 Feb 2007 13:44:46 +0000 (08:44 -0500)]
gitk - remove trailing whitespace from a few lines.
Signed-off-by: Mark Levedahl <mdl123@verizon.net>
Junio C Hamano [Tue, 6 Feb 2007 00:53:12 +0000 (16:53 -0800)]
Fix longstanding mismerge of ALL_CFLAGS vs BASIC_CFLAGS
The earlier commit
d7b6c3c0 (Aug 15, 2006) introduced this
mismerge when most of the CFLAGS were renamed to BASIC_CFLAGS.
Not that it matters right now, since we do not compile XS
Perl extensions which wanted non GNU subset of ALL_CFLAGS for
compilation, but we should make things consistent.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Linus Torvalds [Wed, 24 Jan 2007 19:21:10 +0000 (11:21 -0800)]
pager: Work around window resizing bug in 'less'
If you resize the terminal while less is waiting for input, less
will exit entirely without even showing the output. This is very
noticeable if you do something like "git diff" on a big and
cold-cache tree and git takes a few seconds to think, and then
you resize the window while it's preparing. Boom. No output AT
ALL.
The way to reproduce the problem is to do some pager operation
that takes a while in git, and resizing the window while git is
thinking about the output. Try
git diff --stat v2.6.12..
in the kernel tree to do something where it takes a while for git to start
outputting information.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Fri, 2 Feb 2007 07:30:03 +0000 (23:30 -0800)]
Teach git-remote add to fetch and track
This adds three options to 'git-remote add'.
* -f (or --fetch) option tells it to also run the initial "git
fetch" using the newly created remote shorthand.
* -t (or --track) option tells it not to use the default
wildcard to track all branches.
* -m (or --master) option tells it to make the
remote/$name/HEAD point at a remote tracking branch other
than master.
For example, with this I can say:
$ git remote add -f -t master -t quick-start -m master \
jbf-um git://linux-nfs.org/~bfields/git.git/
to
(1) create remote.jbf-um.url;
(2) track master and quick-start branches (and no other); the
two -t options create these two lines:
fetch = +refs/heads/master:refs/remotes/jbf-um/master
fetch = +refs/heads/quick-start:refs/remotes/jbf-um/quick-start
(3) set up remotes/jbf-um/HEAD to point at jbf-um/master so
that later I can say "git log jbf-um"
Or I could do
$ git remote add -t 'ap/*' andy /home/andy/git.git
to make Andy's topic branches kept track of under refs/remotes/andy/ap/.
Other possible improvements I considered but haven't implemented
(hint, hint) are:
* reject wildcard letters other than a trailing '*' to the -t
parameter;
* make -m optional and when the first -t parameter does not
have the trailing '*' default to that value (so the above
example does not need to say "-m master");
* if -m is not given, and -t parameter ends with '*' (i.e. the
above defaulting did not tell us where to point HEAD at), and
if we did the fetch with -f, check if 'master' was fetched
and make HEAD point at it.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 5 Feb 2007 23:04:01 +0000 (15:04 -0800)]
blame: document --contents option
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 5 Feb 2007 05:49:05 +0000 (21:49 -0800)]
Use pretend_sha1_file() in git-blame and git-merge-recursive.
git-merge-recursive wants an null tree as the fake merge base
while producing the merge result tree. The null tree does not
have to be written out in the object store as it won't be part
of the result, and it is a prime example for using the new
pretend_sha1_file() function.
git-blame needs to register an arbitrary data to in-core index
while annotating a working tree file (or standard input), but
git-blame is a read-only application and the user of it could
even lack the privilege to write into the object store; it is
another good example for pretend_sha1_file().
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 5 Feb 2007 05:42:38 +0000 (21:42 -0800)]
Add pretend_sha1_file() interface.
The new interface allows an application to temporarily hash a
small number of objects and pretend that they are available in
the object store without actually writing them.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Tue, 30 Jan 2007 09:11:08 +0000 (01:11 -0800)]
git-blame: no rev means start from the working tree file.
Warning: this changes the semantics.
This makes "git blame" without any positive rev to start digging
from the working tree copy, which is made into a fake commit
whose sole parent is the HEAD.
It also adds --contents <file> option to pretend as if the
working tree copy has the contents of the named file. You can
use '-' to make the command read from the standard input.
If you want the command to start annotating from the HEAD
commit, you need to explicitly give HEAD parameter.
Signed-off-by: Junio C Hamano <junkio@cox.net>
David Kågedal [Mon, 5 Feb 2007 22:22:28 +0000 (14:22 -0800)]
git-blame: an Emacs minor mode to view file with git-blame output.
Here's another version of git-blame.el that automatically tries to
create a sensible list of colors to use for both light and dark
backgrounds. Plus a few minor fixes.
To use:
1) Load into emacs: M-x load-file RET git-blame.el RET
2) Open a git-controlled file
3) Blame: M-x git-blame-mode
Signed-off-by: Junio C Hamano <junkio@cox.net>
Simon 'corecode' Schubert [Thu, 1 Feb 2007 10:43:39 +0000 (11:43 +0100)]
Allow forcing of a parent commit, even if the parent is not a direct one.
This can be used to compress multiple changesets into one, for example
like
git cvsexportcommit -P cvshead mybranch
without having to do so in git first.
Signed-off-by: Simon 'corecode' Schubert <corecode@fs.ei.tum.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 5 Feb 2007 22:03:27 +0000 (14:03 -0800)]
bisect: it needs to be done in a working tree.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Johannes Schindelin [Tue, 23 Jan 2007 12:30:20 +0000 (13:30 +0100)]
Commands requiring a work tree must not run in GIT_DIR
This patch helps when you accidentally run something like git-clean
in the git directory instead of the work tree.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Stelian Pop [Fri, 12 Jan 2007 21:57:03 +0000 (22:57 +0100)]
Add hg-to-git conversion utility.
hg-to-git.py is able to convert a Mercurial repository into a git one,
and preserves the branches in the process (unlike tailor)
hg-to-git.py can probably be greatly improved (it's a rather crude
combination of shell and python) but it does already work quite well for
me. Features:
- supports incremental conversion
(for keeping a git repo in sync with a hg one)
- supports hg branches
- converts hg tags
Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Aneesh Kumar K.V [Tue, 30 Jan 2007 07:56:50 +0000 (13:26 +0530)]
blameview: Support browsable functionality to blameview.
Double clicking on the row execs a new blameview with commit hash
as argument.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Yasushi SHOJI [Tue, 30 Jan 2007 10:23:38 +0000 (19:23 +0900)]
gitweb: Convert project name to UTF-8
If the repository directory name is in non-ascii, $project needs to be
converted from perl internal to utf-8 because it will be used as
title, page path, and snapshot filename.
use to_utf8() to do the conversion.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Mon, 5 Feb 2007 20:44:37 +0000 (15:44 -0500)]
bash: Support git-bisect and its subcommands.
We now offer completion support for git-bisect's subcommands,
as well as ref name completion on the good/bad/reset subcommands.
This should make interacting with git-bisect slightly easier on
the fingers.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Mon, 5 Feb 2007 20:44:32 +0000 (15:44 -0500)]
bash: Support --add completion to git-config.
We've recently added --add as an argument to git-config, but I
missed putting it into the earlier round of git-config updates
within the bash completion.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Mon, 5 Feb 2007 20:44:30 +0000 (15:44 -0500)]
bash: Hide git-resolve, its deprecated.
Don't offer resolve as a possible subcommand completion. If you
read the top of the script, there is a big warning about how it
will go away soon in the near future. People should not be using it.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Mon, 5 Feb 2007 20:44:28 +0000 (15:44 -0500)]
bash: Offer --prune completion for git-gc.
I'm lazy. I don't want to type out --prune if bash can do it for
me with --<tab>.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Mon, 5 Feb 2007 20:44:24 +0000 (15:44 -0500)]
bash: Hide diff-stages from completion.
Apparently nobody really makes use of git-diff-stages, as nobody
has complained that it is not supported by the git-diff frontend.
Since its likely this will go away in the future, we should not
offer it as a possible subcommand completion.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Mon, 5 Feb 2007 20:44:22 +0000 (15:44 -0500)]
bash: Support completion on git-cherry.
I just realized I did not support ref name completion for git-cherry.
This tool is just too useful to contributors who submit patches
upstream by email; completion support for it is very handy.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Mon, 5 Feb 2007 20:21:06 +0000 (15:21 -0500)]
Show an example of deleting commits with git-rebase.
This particular use of git-rebase to remove a single commit or a
range of commits from the history of a branch recently came up on
the mailing list. Documenting the example should help other users
arrive at the same solution on their own.
It also was not obvious to the newcomer that git-rebase is able to
accept any commit for --onto <newbase> and <upstream>. We should
at least minimally document this, as much of the language in
git-rebase's manpage refers to 'branch' rather than 'committish'.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Andy Parkins [Mon, 5 Feb 2007 19:58:47 +0000 (19:58 +0000)]
git-for-each-ref doesn't return "the bit after $GIT_DIR/refs"
The documentation for git-for-each-ref said that the refname variable
would return "the part after $GIT_DIR/refs/", which isn't true.
Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 5 Feb 2007 01:30:58 +0000 (17:30 -0800)]
t9200: Work around HFS+ issues.
We at least know that the test as written has a problem in an
environment where "touch '$p'; ls | fgrep '$p'" fails, and have
a clear understand why it fails.
This tests if the filesystem has that particular issue we know "git
add" has a problem with, and skips the test in such an environment.
This way, we might catch issues "git add" might have in other environments.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 5 Feb 2007 01:50:14 +0000 (17:50 -0800)]
Rename get_ident() to fmt_ident() and make it available to outside
This makes the functionality of ident.c::get_ident() available to
other callers.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Gerrit Pape [Sat, 3 Feb 2007 22:38:59 +0000 (22:38 +0000)]
git-archimport: initial import needs empty directory
git-archimport should better refuse to start an initial import if the
current directory is not empty.
(http://bugs.debian.org/400508)
Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sun, 4 Feb 2007 00:23:38 +0000 (16:23 -0800)]
Revert "Allow branch.*.merge to talk about remote tracking branches."
This reverts commit
80c797764a6b6a373f0f1f47d7f56b0d950418a9.
Back when I committed this, it seemed to be a good idea. People
who always use remote tracking branches can optionally use the
local name they happen to use to specify what to merge, which meant
that I did not have to teach them why we use the name at the remote
side every time they are confused.
But allowing it seems to break other people's scripts. The real
solution is not to allow more ways to express the same thing, but
to educate people to use the right syntax.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 5 Feb 2007 00:54:47 +0000 (16:54 -0800)]
Merge branch 'np/dreflog'
* np/dreflog:
show-branch -g: default to the current branch.
Let git-checkout always drop any detached head
Enable HEAD@{...} and make it independent from the current branch
scan reflogs independently from refs
add reflog when moving HEAD to a new branch
create_symref(): do not assume pathname from git_path() persists long enough
add logref support to git-symbolic-ref
move create_symref() past log_ref_write()
add reflog entries for HEAD when detached
enable separate reflog for HEAD
lock_ref_sha1_basic(): remember the original name of a ref when resolving it
make reflog filename independent from struct ref_lock
Robin Rosenberg [Sun, 4 Feb 2007 16:16:39 +0000 (17:16 +0100)]
Why is it bad to rewind a branch that has already been pushed out?
Mention git-revert as an alternative to git-reset to revert changes.
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sun, 4 Feb 2007 11:25:12 +0000 (03:25 -0800)]
git-clone --reference: saner handling of borrowed symrefs.
When using --reference to borrow objects from a neighbouring
repository while cloning, we copy the entire set of refs under
temporary "refs/reference-tmp/refs" space and set up the object
alternates. However, a textual symref copied this way would not
point at the right place, and causes later steps to emit error
messages (which is harmless but still alarming). This is most
visible when using a clone created with the separate-remote
layout as a reference, because such a repository would have
refs/remotes/origin/HEAD with 'ref: refs/remotes/origin/master'
as its contents.
Although we do not create symbolic-link based refs anymore, they
have the same problem because they are always supposed to be
relative to refs/ hierarchy (we dereference by hand, so it only
is good for HEAD and nothing else).
In either case, the solution is simply to remove them after
copying under refs/reference-tmp; if a symref points at a true
ref, that true ref itself is enough to ensure that objects
reachable from it do not needlessly get fetched.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 07:38:47 +0000 (02:38 -0500)]
bash: Support internal revlist options better.
format-patch/log/whatchanged all take --not and --all as options
to the internal revlist process. So these should be supported
as possible completions.
gitk takes anything rev-list/log/whatchanged takes, so we should
use complete_revlist to handle its options.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 07:38:43 +0000 (02:38 -0500)]
bash: Support unique completion when possible.
Because our use of -o nospace prevents bash from adding a trailing space
when a completion is unique and has been fully completed, we need to
perform this addition on our own. This (large) change converts all
existing uses of compgen to our wrapper __gitcomp which attempts to
handle this by tacking a trailing space onto the end of each offered
option.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 07:38:37 +0000 (02:38 -0500)]
bash: Support unique completion on git-config.
In many cases we know a completion will be unique, but we've disabled
bash's automatic space addition (-o nospace) so we need to do it
ourselves when necessary.
This change adds additional support for new configuration options
added in 1.5.0, as well as some extended completion support for
the color.* family of options.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 07:38:30 +0000 (02:38 -0500)]
bash: Classify more commends out of completion.
Most of these commands are not ones you want to invoke from the
command line on a frequent basis, or have been renamed in 1.5.0 to
more friendly versions, but the old names are being left behind to
support existing scripts in the wild.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 07:38:27 +0000 (02:38 -0500)]
bash: Add space after unique command name is completed.
Because we use the nospace option for our completion function for
the main 'git' wrapper bash won't automatically add a space after a
unique completion has been made by the user. This has been pointed
out in the past by Linus Torvalds as an undesired behavior. I agree.
We have to use the nospace option to ensure path completion for
a command such as `git show` works properly, but that breaks the
common case of getting the space for a unique completion. So now we
set IFS=$'\n' (linefeed) and add a trailing space to every possible
completion option. This causes bash to insert the space when the
completion is unique.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 07:38:23 +0000 (02:38 -0500)]
bash: Complete long options to git-add.
The new --interactive mode of git-add can be very useful, so users
will probably want to have completion for it.
Likewise the new git-add--interactive executable is actually a
plumbing command. Its invoked by `git add --interactive` and is
not intended to be invoked directly by the user. Therefore we
should hide it from the list of available Git commands.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 07:38:21 +0000 (02:38 -0500)]
bash: Classify cat-file and reflog as plumbing.
Now that git-show is capable of displaying any file content from any
revision and is the approved Porcelain-ish level method of doing so,
cat-file should no longer be classified as a user-level utility by
the bash completion package.
I'm also classifying the new git-reflog command as plumbing for the
time being as there are no subcommands which are really useful to
the end-user. git-gc already invokes `git reflog expire --all`,
which makes it rather unnecessary for the user to invoke it directly.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 07:38:17 +0000 (02:38 -0500)]
bash: Remove short option completions for branch/checkout/diff.
The short options (-l, -f, -d) for git-branch are rather silly to
include in the completion generation as these options must be fully
typed out by the user and most users already know what the options
are anyway, so including them in the suggested completions does
not offer huge value. (The same goes for git-checkout and git-diff.)
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sun, 4 Feb 2007 07:31:47 +0000 (23:31 -0800)]
show-branch -g: default to the current branch.
Now we have a separate reflog on HEAD, show-branch -g without an explicit
parameter defaults to the current branch, or HEAD when it is detached
from branches.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Nicolas Pitre [Sun, 4 Feb 2007 02:50:39 +0000 (21:50 -0500)]
Let git-checkout always drop any detached head
We used to refuse leaving a detached HEAD when it wasn't matching an
existing ref so not to lose any commit that might have been performed
while not on any branch (unless -f was provided).
But this protection was completely bogus since it was still possible
to move to HEAD^ while still remaining detached but losing the last
commit anyway if there was one.
Now that we have a proper reflog for HEAD it is best to simply remove
that bogus (and admitedly annoying) protection and simply display the
last HEAD position instead. If one wants to recover a lost detached
state then it can be retrieved from the HEAD reflog.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Nicolas Pitre [Sun, 4 Feb 2007 02:49:16 +0000 (21:49 -0500)]
Enable HEAD@{...} and make it independent from the current branch
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sun, 4 Feb 2007 06:14:40 +0000 (22:14 -0800)]
Merge branch 'master' into np/dreflog
This is to resolve conflicts early in preparation for possible
inclusion of "reflog on detached HEAD" series by Nico, as having
it in 1.5.0 would really help us remove confusion between
detached and attached states.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 05:45:47 +0000 (00:45 -0500)]
Default GIT_MERGE_VERBOSITY to 5 during tests.
Its really nice to be able to run a test with -v and automatically
see the "debugging" dump from merge-recursive, especially if we
are actually trying to debug merge-recursive.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 05:45:54 +0000 (00:45 -0500)]
Keep untracked files not involved in a merge.
My earlier fix (
8371234e) to delete renamed tracked files from the
working directory also caused merge-recursive to delete untracked
files that were in the working directory.
The problem here is merge-recursive is deleting the working directory
file without regard for which branch it was associated with. What we
really want to do during a merge is to only delete files that were
renamed by the branch we are merging into the current branch,
and that are still tracked by the current branch. These files
definitely don't belong in the working directory anymore.
Anything else is either a merge conflict (already handled in other
parts of the code) or a file that is untracked by the current branch
and thus is not even participating in the merge. Its this latter
class that must be left alone.
For this fix to work we are now assuming that the first non-base
argument passed to git-merge-recursive always corresponds to the
working directory. This is already true for all in-tree callers
of merge-recursive. This assumption is also supported by the
long time usage message of "<base> ... -- <head> <remote>", where
"<head>" is implied to be HEAD, which is generally assumed to be
the current tree-ish.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Pavel Roskin [Sun, 4 Feb 2007 04:49:16 +0000 (23:49 -0500)]
Assorted typo fixes
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Sun, 4 Feb 2007 04:02:59 +0000 (23:02 -0500)]
Cleanup subcommand documentation for git-remote.
Jakub Narebski pointed out the positional notation in git-remote's
documentation was very confusing, especially now that we have 3
supported subcommands. Instead of referring to subcommands by
position, refer to them by name.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Pavel Roskin [Sun, 4 Feb 2007 03:01:04 +0000 (22:01 -0500)]
git-config --rename-section could rename wrong section
The "git-config --rename-section" implementation would match sections
that are substrings of the section name to be renamed.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sat, 3 Feb 2007 20:37:54 +0000 (12:37 -0800)]
combine-diff: special case --unified=0
Even when --unified=0 is given, the main loop to show the
combined textual diff needs to handle a line that is unchanged
but has lines that were deleted relative to a parent before it
(because that is where the lost lines hang). However, such a
line should not be emitted in the final output.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sat, 3 Feb 2007 06:40:49 +0000 (22:40 -0800)]
Why is it bad to rewind a branch that has already been pushed out?
I was reading the tutorial and noticed that we say this:
Also, don't use "git reset" on a publicly-visible branch that
other developers pull from, as git will be confused by history
that disappears in this way.
I do not think this is a good explanation. For example, if we
do this:
(1) I build a series and push it out.
---o---o---o---j
(2) Alice clones from me, and builds two commits on top of it.
---o---o---o---j---a---a
(3) I rewind one and build a few, and push them out.
---o---o---o...j
\
h---h---h---h
(4) Alice pulls from me again:
---o---o---o---j---a---a---*
\ /
h---h---h---h
Contrary to the description, git will happily have Alice merge
between the two branches, and never gets confused.
Maybe I did not want to have 'j' because it was an incomplete
solution to some problem, and Alice may have fixed it up with
her changes, while I abandoned that approach I started with 'j',
and worked on something completely unrelated in the four 'h'
commits. In such a case, the merge Alice would make would be
very sensible, and after she makes the merge if I pull from her,
the world will be perfect. I started something with 'j' and
dropped the ball, Alice picked it up and perfected it while I
went on to work on something else with 'h'. This would be a
perfect example of distributed parallel collaboration. There is
nothing confused about it.
The case the rewinding becomes problematic is if the work done
in 'h' tries to solve the same problem as 'j' tried to solve in
a different way. Then the merge forced on Alice would make her
pick between my previous attempt with her fixups (j+a) and my
second attempt (h). If 'a' commits were to fix up what 'j'
started, presumably Alice already studied and knows enough about
the problem so she should be able to make an informed decision
to pick between what 'j+a' and 'h' do.
A lot worse case is if Alice's work is not at all related to
what 'j' wanted to do (she did not mean to pick up from where I
left off -- she just wanted to work on something different).
Then she would not be familiar enough with what 'j' and 'h'
tried to achieve, and I'd be forcing her to pick between the
two. Of course if she can make the right decision, then again
that is a perfect example of distributed collaboration, but that
does not change the fact that I'd be forcing her to clean up my
mess.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sat, 20 Jan 2007 01:12:11 +0000 (17:12 -0800)]
honor GIT_REFLOG_ACTION in git-commit
This allows git-cherry-pick and git-revert to properly identify
themselves in the resulting reflog entries. Earlier they were
recorded as what git-commit has done.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Fri, 19 Jan 2007 19:51:29 +0000 (11:51 -0800)]
fix reflog entries for "git-branch"
Even when -l is not given from the command line, the repository
may have the configuration variable core.logallrefupdates set,
or an old-timer might have done ": >.git/logs/refs/heads/new"
before running "git branch new". In these cases, the code gave
an uninitialized msg[] from the stack to be written out as the
reflog message.
This also passes a different message when '-f' option is used.
Saying "git branch -f branch some-commit" is a moral equilvalent
of doing "git-reset some-commit" while on the branch.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Nicolas Pitre [Sat, 3 Feb 2007 18:25:43 +0000 (13:25 -0500)]
scan reflogs independently from refs
Currently, the search for all reflogs depends on the existence of
corresponding refs under the .git/refs/ directory. Let's scan the
.git/logs/ directory directly instead.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sat, 3 Feb 2007 07:17:34 +0000 (23:17 -0800)]
core-tutorial: http reference link fix
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sat, 3 Feb 2007 06:55:07 +0000 (22:55 -0800)]
Tutorial-2: Adjust git-status output to recent reality.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Sat, 3 Feb 2007 06:19:17 +0000 (22:19 -0800)]
Tutorial: fix asciidoc formatting of "git add" section.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Fri, 2 Feb 2007 08:00:03 +0000 (03:00 -0500)]
Don't leak file descriptors from unavailable pack files.
If open_packed_git failed it may have been because the packfile
actually exists and is readable, but some sort of verification
did not pass. In this case open_packed_git left pack_fd filled
in, as the file descriptor is valid. We don't want to leak the
file descriptor, nor do we want to allow someone in the future
to use this packed_git.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Andy Parkins [Fri, 2 Feb 2007 23:56:08 +0000 (23:56 +0000)]
doc: hooks.txt said post-commit default sends an email, it doesn't
The default post-commit hook is actually empty; it is the update hook
that sends an email. This patch corrects hooks.txt to reflect that.
Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Eric Wong [Fri, 2 Feb 2007 13:10:25 +0000 (05:10 -0800)]
Disallow invalid --pretty= abbreviations
--pretty=o is a valid abbreviation, --pretty=omfg is not
Noticed by: Nicolas Vilz
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Mike Coleman [Fri, 2 Feb 2007 06:25:30 +0000 (00:25 -0600)]
Fix some documentation typos and grammar
Also suggest user manual mention .gitignore.
Signed-off-by: Michael Coleman <tutufan@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Thu, 1 Feb 2007 20:52:38 +0000 (15:52 -0500)]
Don't find objects in packs which aren't available anymore.
Matthias Lederhofer identified a race condition where a Git reader
process was able to locate an object in a packed_git index, but
was then preempted while a `git repack -a -d` ran and completed.
By the time the reader was able to seek in the packfile to get the
object data, the packfile no longer existed on disk.
In this particular case the reader process did not attempt to
open the packfile before it was deleted, so it did not already
have the pack_fd field popuplated. With the packfile itself gone,
there was no way for the reader to open it and fetch the data.
I'm fixing the race condition by teaching find_pack_entry to ignore
a packed_git whose packfile is not currently open and which cannot
be opened. If none of the currently known packs can supply the
object, we will return 0 and the caller will decide the object is
not available. If this is the first attempt at finding an object,
the caller will reprepare_packed_git and try again. If it was
the second attempt, the caller will typically return NULL back,
and an error message about a missing object will be reported.
This patch does not address the situation of a reader which is
being starved out by a tight sequence of `git repack -a -d` runs.
In this particular case the reader will try twice, probably fail
both times, and declare the object in question cannot be found.
As it is highly unlikely that a real world `git repack -a -d` can
complete faster than a reader can open a packfile, so I don't think
this is a huge concern.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Thu, 1 Feb 2007 20:52:33 +0000 (15:52 -0500)]
Refactor open_packed_git to return an error code.
Because I want to reuse open_packed_git in a context where I don't
want the process to die if the packfile in question is bogus, I'm
changing its behavior to return error("...") rather than die("...")
when it detects something is wrong with the packfile it was given.
Right now we still must die out of use_pack should open_packed_git
fail, as none of use_pack's callers are prepared to handle a failure
from that function.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Thu, 1 Feb 2007 20:52:27 +0000 (15:52 -0500)]
Correct comment in prepare_packed_git_one.
After staring at the comment and the associated for loop, I
realized the comment was completely bogus. The section of
code its talking about is trying to avoid duplicate mapping
of the same packfile.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Thu, 1 Feb 2007 20:52:22 +0000 (15:52 -0500)]
Cleanup prepare_packed_git_one to reuse install_packed_git.
There is little point in having the linked list insertion code
appearing in install_packed_git, and then again just 30 lines
further down in the same file.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Fri, 2 Feb 2007 05:06:08 +0000 (00:06 -0500)]
Teach 'git remote' how to cleanup stale tracking branches.
Since it can be annoying to manually cleanup 40 tracking branches
which were removed by the remote system, 'git remote prune <n>'
can now be used to delete any tracking branches under <n> which
are no longer available on the remote system.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Fri, 2 Feb 2007 05:05:55 +0000 (00:05 -0500)]
Pull out remote listing functions in git-remote.
I want to reuse the stale branch detection to implement a new
'git remote prune' subcommand. Easiest way to do that is to use
the same logic that 'git remote show' uses to determine the stale
tracking branches, then delete those.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Eric Wong [Thu, 1 Feb 2007 21:12:26 +0000 (13:12 -0800)]
git-svn: do not let Git.pm warn if we prematurely close pipes
This mainly quiets down warnings when running git svn log.
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Johannes Schindelin [Thu, 1 Feb 2007 23:21:49 +0000 (00:21 +0100)]
Update the documentation for the new '@{...}' syntax
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Johannes Schindelin [Thu, 1 Feb 2007 23:07:24 +0000 (00:07 +0100)]
Teach the '@{...}' notation to git-log -g
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Nicolas Pitre [Thu, 1 Feb 2007 22:29:33 +0000 (17:29 -0500)]
provide a nice @{...} syntax to always mean the current branch reflog
This is shorter than HEAD@{...} and being nameless it has no semantic
issues.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Nicolas Pitre [Thu, 1 Feb 2007 17:33:23 +0000 (12:33 -0500)]
prevent HEAD reflog to be interpreted as current branch reflog
The work in progress to enable separate reflog for HEAD will make it
independent from reflog of any branch HEAD might be pointing to. In
the mean time disallow HEAD@{...} until that work is completed. Otherwise
people might get used to the current behavior which makes HEAD@{...} an
alias for <current_branch>@{...} which won't be the case later.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Fri, 2 Feb 2007 05:47:34 +0000 (21:47 -0800)]
Use "git checkout -q" in git-bisect
Converts one use of git-checkout in git-bisect not to say "switching
to branch". It looks like all the other cases it is friendlier to
give notice to the end user.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Nicolas Pitre [Thu, 1 Feb 2007 17:31:26 +0000 (12:31 -0500)]
add a quiet option to git-checkout
Those new messages are certainly nice, but there might be cases where
they are simply unwelcome, like when git-commit is used within scripts.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Nicolas Pitre [Thu, 1 Feb 2007 17:30:28 +0000 (12:30 -0500)]
reword the detached head message a little again
Seems clearer this way, to me at least.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Thu, 1 Feb 2007 09:08:41 +0000 (01:08 -0800)]
detached HEAD -- finishing touches
This updates "git-checkout" to report which branch you are
switching to. Especially for people who do not use __git_ps1
from contrib/completion/git-completion.bash this would give a
friendlier feedback of what is going on, and should make the
reminder message much less scary.
Here is a sample session (the prompt tells which branch I am on).
* I have some local modification and realize that the change deserves
to be on its own new topic branch.
[git.git (master)]$ git diff --stat
git-checkout.sh | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
* So I switch to a new branch. I get a listing of local modifications
and assuring "Switched to a new branch" message.
[git.git (master)]$ git checkout -b jc/checkout
M git-checkout.sh
Switched to a new branch "jc/checkout"
* If I switch back to "master", I get essentially the same.
[git.git (jc/checkout)]$ git checkout master
M git-checkout.sh
Switched to branch "master"
* Detaching head would say which commit I am at and reminds me that
I am not on any branch (not that I would detach my HEAD while keeping
precious local changes around in any real-world workflow -- this is
just a sample session).
[git.git (master)]$ git checkout master^
M git-checkout.sh
Note: you are not on any branch and are at commit "master^"
If you want to create a new branch from this checkout, you may do so
(now or later) by using -b with the checkout command again. Example:
git checkout -b <new_branch_name>
* Coming back to an attached state can lose the detached HEAD, so
I get warned and stopped.
[git.git]$ git checkout master
You are not on any branch and switching to branch 'master'
may lose your changes. At this point, you can do one of two things:
(1) Decide it is Ok and say 'git checkout -f master';
(2) Start a new branch from the current commit, by saying
'git checkout -b <branch-name>'.
Leaving your HEAD detached; not switching to branch 'master'.
* Moving around while my HEAD is detached is Ok. I still get the list
of local modifications.
[git.git]$ git checkout master^0
M git-checkout.sh
* The previous step that switched to the tip commit is an obscure but
useful trick. My HEAD is still detached but now it is pointed at by
an existing ref, so I can come back safely.
[git.git]$ git checkout master
M git-checkout.sh
Switched to branch "master"
* And we are back on the "master" branch.
[git.git (master)]$ exit
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Wed, 31 Jan 2007 23:06:21 +0000 (15:06 -0800)]
GIT v1.5.0-rc3
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Wed, 31 Jan 2007 23:41:27 +0000 (15:41 -0800)]
Do not use hardcoded path to xhmtl.xsl to generate user's manual
It does not seem to need it either and gives an error on FC5 I use
at kernel.org to cut documentation tarballs, so remove it in the
meantime.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Wed, 31 Jan 2007 22:53:51 +0000 (14:53 -0800)]
git main documentation: point at the user's manual.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Wed, 31 Jan 2007 22:41:17 +0000 (14:41 -0800)]
Merge branch 'master' of git://linux-nfs.org/~bfields/git
This is in the hope of giving JBF's user-manual wider exposure.
I am not very happy with trailing whitespaces in the new
document, but let's not worry too much about the formatting
issues for now, but concentrate more on the structure and the
contents.
Junio C Hamano [Wed, 31 Jan 2007 22:25:52 +0000 (14:25 -0800)]
t9200: do not test -x bit if the filesystem does not support it.
The last test in t9200 wants to see if executable bit is
retained, which has no chance of succeeding on a filesystem that
does not handle executable bit correctly.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Wed, 31 Jan 2007 22:21:48 +0000 (14:21 -0800)]
t9200: Re-code non-ascii path test in UTF-8
For the purpose of this test we do not really care if the paths
are in latin-1, but people on Cygwin seem to be having problem
on foreign-looking pathnames that do not play well with their
locale.
Let's try to re-code them in UTF-8 and see who screams,
thanks, or reports no-improvements.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Aneesh Kumar K.V [Tue, 30 Jan 2007 07:56:51 +0000 (13:26 +0530)]
Update git-cat-file documentation
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Wed, 31 Jan 2007 21:30:54 +0000 (13:30 -0800)]
Documentation: "git-checkout <tree> <path>" takes any tree-ish
Especially, it is not limited to branch.
Signed-off-by: Junio C Hamano <junkio@cox.net>
David Kågedal [Wed, 31 Jan 2007 16:12:03 +0000 (17:12 +0100)]
Improved error message from git-rebase
If the index wasn't clean, git-rebase would simply show the output from
git-diff-index with no further comment to the user.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Alex Riesen [Wed, 31 Jan 2007 13:34:17 +0000 (14:34 +0100)]
Fix git-update-index to work with relative pathnames.
In particular, it fixes the following (typical for cygwin) problem:
$ git-update-index --chmod=-x ../wrapper/Jamfile
fatal: git-update-index: cannot chmod -x '../wrapper/Jamfile'
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Tue, 30 Jan 2007 18:11:49 +0000 (13:11 -0500)]
Escape --upload-pack from expr.
Recent commit
ae1dffcb28ee89a23f8d2747be65e17c8eab1690 by Junio
changed the way --upload-pack was passed around between clone,
fetch and ls-remote and modified the handling of the command
line parameter parsing.
Unfortunately FreeBSD 6.1 insists that the expression
expr --upload-pack=git-upload-pack : '-[^=]*=\(.*\)'
is illegal, as the --upload-pack option is not supported by their
implementation of expr.
Elsewhere in Git we use z as a leading prefix of both arguments,
ensuring the -- isn't seen by expr.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Shawn O. Pearce [Wed, 31 Jan 2007 07:24:44 +0000 (02:24 -0500)]
Don't coredump on bad refs in update-server-info.
Apparently if we are unable to parse an object update-server-info
coredumps, as it doesn't bother to check the return value of its
call to parse_object.
Instead of coredumping, skip the ref.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Nicolas Pitre [Wed, 31 Jan 2007 19:10:37 +0000 (14:10 -0500)]
tone down the detached head warning
This is not meant to frighten people or even to suggest they might be
doing something wrong, but rather to notify them of a state change and
provide a likely option in the case this state was entered by mistake.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Wed, 31 Jan 2007 05:03:11 +0000 (21:03 -0800)]
Fix git-tag -u
... which I broke when we introduced user.signingkey configuration.
There was no reason to add a new variable keyid to the script.
Signed-off-by: Junio C Hamano <junkio@cox.net>
J. Bruce Fields [Tue, 30 Jan 2007 17:48:48 +0000 (12:48 -0500)]
user-manual: todo's
Update todo's.
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
J. Bruce Fields [Tue, 30 Jan 2007 17:43:36 +0000 (12:43 -0500)]
user-manual: point to README for gitweb information
I'd like complete gitweb setup instructions some day, but for now just
refer to the gitweb README.
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Aneesh Kumar K.V [Tue, 30 Jan 2007 07:56:49 +0000 (13:26 +0530)]
blameview: Use git-cat-file to read the file content.
Fix blameview to use git-cat-file to read the file content.
This make sure we show the right content when we have modified
file in the working directory which is not committed.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Santi Béjar [Tue, 30 Jan 2007 09:36:24 +0000 (10:36 +0100)]
git-fetch: Allow fetching the remote HEAD
... with:
$ git fetch ${remote} HEAD
Also
$ git fetch ${remote} :${localref}
worked, but
$ git fetch ${remote} HEAD:{localref}
didn't. Now both are equivalent.
Signed-off-by: Santi Béjar <sbejar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Tue, 30 Jan 2007 10:22:37 +0000 (02:22 -0800)]
git-send-email: remove debugging output.
rfc2047 unquoter spitted out an annoying "- unquoted" which was
added during debugging but I forgot to remove.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Johannes Sixt [Wed, 24 Jan 2007 15:03:42 +0000 (16:03 +0100)]
Add a missing fork() error check.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Tue, 30 Jan 2007 01:36:22 +0000 (17:36 -0800)]
git-blame: somewhat better commenting.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Mark Wooding [Mon, 29 Jan 2007 15:48:06 +0000 (15:48 +0000)]
Make fsck and fsck-objects be builtins.
The earlier change
df391b192 to rename fsck-objects to fsck broke
fsck-objects. This should fix it again.
Signed-off-by: Mark Wooding <mdw@distorted.org.uk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 29 Jan 2007 09:06:27 +0000 (01:06 -0800)]
git-commit -s: no extra space when sign-offs appear at the end already.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Simon 'corecode' Schubert [Mon, 29 Jan 2007 08:09:25 +0000 (09:09 +0100)]
Replace perl code with pure shell code
Signed-off-by: Simon 'corecode' Schubert <corecode@fs.ei.tum.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano [Mon, 29 Jan 2007 08:57:07 +0000 (00:57 -0800)]
lock_any_ref_for_update(): do not accept malformatted refs.
We used to use lock_any_ref_for_update() because the command
needs to also update HEAD (which is not under refs/, so
lock_ref_sha1() cannot be used). The function however did not
check for refs with illegal characters in them.
Use check_ref_format() to catch malformed refs. For this check,
we specifically do not want to say having less than two levels
in the name is illegal to allow HEAD (and perhaps other special
refs in the future).
Signed-off-by: Junio C Hamano <junkio@cox.net>