These commands are converted to run from a subdirectory.

    commit-tree convert-objects merge-base merge-index mktag
    pack-objects pack-redundant prune-packed read-tree tar-tree
    unpack-file unpack-objects update-server-info write-tree
Signed-off-by: NJunio C Hamano <junkio@cox.net>

These are whole-tree operations and there is not much point
making them operable from within a subdirectory, but it is easy
to do so, and using setup_git_directory() upfront helps git://
proxy specification picked up from the correct place.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This makes ls-tree to work from subdirectory.  It defaults to
show the paths under the current subdirectory, and interprets
user-supplied paths as relative to the current subdirectory.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When -w is given, it needs to find out where the .git directory
is, so run the setup_git_directory() when we see a -w.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

With this, git-checkout-index from a subdirectory works as
expected.  Note that "git-checkout-index -a" checks out files
only in the current directory and under.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Not much point making it work from subdirectory, but for a
consistency make it so.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Use setup_git_directory_gently() at the beginning of peek-remote
so that git:// proxy can be picked up from the configuration
file.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When applying a patch to index file, we need to know where GIT_DIR is;
use setup_git_directory() to find it out.  This also allows us to work
from a subdirectory if we wanted to.

When git-apply is run from a subdirectory, it applies the given patch
only to the files under the current directory and below.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

 - prefix_filename() is like prefix_path() but can be used to
   name any file on the filesystem, not the files that might go
   into the index file.

 - setup_git_directory_gently() tries to find the GIT_DIR, but does
   not die() if called outside a git repository.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This is to prepare for ls-tree updates.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

In git-merge documentation, add a section to describe what happens to
the index and working tree during merge, and what their cleanliness
requirements are before the merge.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Typo resulted in accessing past the beginning of a string causing segfaults.

[jc: signoffs?]

Noticed by linux@horizon.com.  The first merge parent (typically
"our branch") is ^1, not ^0, and the first other branch is ^2.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When a .dotest from a previously failed rebase or patch
application exists, rebase got confused and tried to apply
mixture of what was already there and what is being rebased.
Check the existence of the directory and barf.

It failed with an mysterious "fatal: cannot read mbox" message
if the branch being rebased is fully in sync with the base.
Also if the branch is a proper descendant of the base, there is
no need to run rebase logic.  Prevent these from happening by
checking where the merge-base is.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Noticed and fixed by Matthias Urlichs and Josef Weidendorfer.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Hardcoding "utf-8" in the script breaks projects that use local
encoding, so allow setting i18n.commitEncoding.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

The change in 8b7e5d76, which makes
a couple of git-diff-tree calls supply only one id rather than two,
fixes the display when showing what a single commit did with dense
revlists, but broke the diff this->selected and diff selected->this
right-click menu functions.

Yann Dirson pointed this out and had a patch that fixed the diff
menu functions by passing a "singlecommit" flag around.  This fixes
it a bit differently, by making the ids and diffids variables be
either a single id, in the case of showing what a commit did, or
{oldid newid}, in the case of the diff menu functions.  That way
we can just pass $ids to git-diff-tree as is.  Most of the changes
in fact are just reversing the order of ids in $ids and $diffids,
because they used to be {child parent}, but git-diff-tree requires
old id before new id.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Specifying the value for a single letter, single dash option
parameter with equal sign looked funny, and more importantly
calling the flag to override encoding from utf-8 to something
else "-u" (obviously abbreviated from "utf-8") did not make any
sense.  So spell it out.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This uses i18n.commitencoding configuration item to pick up the
default commit encoding for the repository when converting form
e-mail encoding to commit encoding (the default is utf8).
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When the message body does not identify what encoding it is in,
-u assumes it is in latin-1 and converts it to utf8, which is
the recommended encoding for git commit log messages.

With -u=<encoding>, the conversion is made into the specified
one, instead of utf8, to allow project-local policies.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This is to hold what the project-local rule as to the
charset/encoding for the commit log message is.  Lack of it
defaults to utf-8.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

The change made in 8b7e5d76 to
accomodate dense revlists in single-commit diffs has broken computing
of diffs between arbitrary trees, which does need to consider two
commit ids.

This patch changes the two git-diff-tree calls to get the necessary
two ids in this case.  It does so by propagating a "singlecommit" flag
through all functions involved via an additional argument.
Signed-off-by: NYann Dirson <ydirson@altern.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

-k requests to keep running on an error condition.
Previously, git-mv stopped on failing renames even with -k.

There are some error conditions which are not checked in the
first phase of git-mv, eg. 'permission denied'. Still, option
-k should work.
Signed-off-by: NJosef Weidendorfer <Josef.Weidendorfer@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

The two synopsis lines have to be prefixed with a space
so that asciidoc inserts a line break inbetween for the
manual page.
Signed-off-by: NJosef Weidendorfer <Josef.Weidendorfer@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This gives a better error message when trying to move a directory
into some subdirectory of itself; ie. no real bug fix: renaming
already failed before, but with a strange "invalid argument".
Signed-off-by: NJosef Weidendorfer <Josef.Weidendorfer@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When doing multiple renames, and a rename in the middle fails,
git-mv did not store the successful renames in the git index;
this is fixed by delaying the error message on a failed rename
to after the git updating.
Signed-off-by: NJosef Weidendorfer <Josef.Weidendorfer@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Small fixes to be consistent with other git scripts:
- usage message is only about options and arguments
- on error, exit(1) without the usage message

Additionally, "beautifies" output with -n a little bit
Signed-off-by: NJosef Weidendorfer <Josef.Weidendorfer@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

After figuring out the GIT_DIR location, make sure the
repository is of the right vintage, by calling
check_repository_format(). .
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This makes init-db repository version aware.

It checks if an existing config file says the repository being
reinitialized is of a wrong version and aborts before doing
further harm.

When copying the templates, it makes sure the they are of the
right repository format version.  Otherwise the templates are
ignored with an warning message.

It copies the templates before creating the HEAD, and if the
config file is copied from the template directory, reads it,
primarily to pick up the value of core.symrefsonly.

It changes the way the result of the filemode reliability test
is written to the configuration file using git_config_set().
The test is done even if the config file was copied from the
templates.

And finally, our own repository format version is written to the
config file.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

After daemon, upload-pack and receive-pack find out where the
git directory is and chdir() there, make sure that repository is
in a format we understand, after putenv("GIT_DIR=.") so that it
knows to pick up the configuration file from there.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This adds the repository format version code, first done by
Martin Atukunda.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Prepending asterisk to the output was just adding noise, and
making scripts like proposed git-send-mail by Andreas Ericsson
do unnecessary work.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

It dropped the last hexdigit in the object name.

[jc: Noticed and patch supplied by ALASCM, reworked to apply at
the right place by me]
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Use update-index --stdin to handle large number of files without
breaking exec() argument storage limit.

[jc: with minor cleanup from the version posted on the list]
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Originally noticed by Tommi Virtanen, but done slightly differently.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Any core commands that use setup_git_directory() now check if
given GIT_DIR is really a valid repository, so the same check in
git-sh-setup can use it without reimplementing it in shell.
This commit changes git-sh-setup to use git-var command for
that, although any other commands would do.

Note that we export GIT_DIR explicitly when calling git-var;
without it, the caller of this script would use GIT_DIR that we
return (which is to assume ./.git unless the caller has it
elsewhere) while git-var would go up to find a .git directory in
our parent directories, which would be checking a different
directory from what our callers will be using.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

setup_git_directory() always trusted what the user told where
GIT_DIR was, and assumed that is a valid .git/ directory.  This
commit changes it to at least do the same level validation as
is_toplevel_directory() does -- has refs/, has objects/ unless
GIT_OBJECT_DIRECTORY is set, and has valid HEAD symlink or
symref.
Signed-off-by: NJunio C Hamano <junkio@cox.net>