There were some problems with the usage message clean-up patch
series. I hadn't realised that subdirectory aware scripts can't source
git-sh-setup. I propose that we change this and let the scripts which
are subdirectory aware set a variable, SUBDIRECTORY_OK, before they
source git-sh-setup.

The scripts will also set USAGE and possibly LONG_USAGE before they
source git-sh-setup. If LONG_USAGE isn't set it defaults to USAGE.

If we go this way it's easy to catch --help in git-sh-setup, print the
(long) usage message to stdout and exit cleanly. git-sh-setup can
define a 'usage' shell function which can be called by the scripts to
print the short usage string to stderr and exit non-cleanly. It will
also be easy to change $0 to basename $0 or something else, if would
like to do that sometime in the future.

What follows is a patch to convert a couple of the commands to this
style. If it's ok with everyone to do it this way I will convert the
rest of the scripts too.

[jc: thrown in to proposed updates queue for comments.]
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Talk about the following as well:

 * git fetch --tags
 * Use of "git push" as a one-man distributed development vehicle.
 * Show example of remotes file for pulling and pushing.
 * Annotate git-shell setup.
 * Using Carl's update hook in a CVS-style shared repository.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

3bd348ae commit broke checking
out specific paths.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

In case some refs couldn't be pushed out due to an error (mostly the
not-a-proper-subset error), make git-send-pack exit with non-zero status
after the push is over (that is, it still tries to push out the rest
of the refs).

[jc: I adjusted a test for this change.]
Signed-off-by: NPetr Baudis <pasky@suse.cz>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Although "git-merge" is advertised as the end-user level command
(instead of being a "git-pull" backend), it was not prepared to
take tag objects that point at commits and barfed when fed one.
Sanitize the input while we validate them, for which we already
have a loop.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

When clone-pack has trouble with the remote, it dies unfriendly
"EOF" error message.  We cannot tell the reason why it failed
from the local end; it could be that the repository did not
exist, or configured not to serve over git-daemon, or a network
failure.  At least, saying clone-pack failed makes it a bit more
meaningful.

I am not convinced yet that removing the newly created directory
is the right thing to do, so this commit leaves the new
directory behind.

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

The initial section of tutorial was too heavy on internal
workings for the first-time readers, so rewrite the introductory
section of git(7) to start with "not learning core git commands"
section and refer them to README to grasp the basic concepts,
then Everyday to give overview with task/role oriented examples
for minimum set of commands, and finally the tutorial.

Also add to existing note in the tutorial that many too
technical descriptions can be skipped by a casual reader.

I initially started to review the tutorial, with the objective
of ripping out the detailed technical information altogether,
but I found that the level of details in the initial couple of
sections that talk about refs and the object database in a
hands-on fashion was about rigth, and left all of them there.  I
feel that reading about fsck-index and repack is too abstract
without being aware of these directories and files.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

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

Also move pack protocol description to technical/.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

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

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

Somehow we checked only one side and not the other.  By checking
the filesize upfront, we can bypass generating delta
unnecessarily.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This reverts e726715a commit,
because reverting diff-delta emptiness change would break this test.

This reverts 962537a3 commit to
play safe.

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

Delta computation with an empty blob used to punt and returned NULL.
This commit allows creation with empty blob; all combination of
empty->empty, empty->something, and something->empty are allowed.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This test kicks in only if you built test-delta executable, and
makes sure that the basic delta routine is working properly even
on empty files.

This commit is to make sure we have a test to catch the
breakage.  The delitifier code is still broken, which will be
fixed with the next commit.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This bug caused Darrin Thompson to notice that our deltifier was
half broken and punting on an empty blob.
Signed-off-by: NJunio C Hamano <junio@twinsun.com>

This adds a couple of tests to cover the following renaming
merge cases:

 - one side renames and the other side does not, with and without
   content conflicts.

 - both side rename to the same path, with and without content
   conflicts.

The test setup also prepares a case in which both side rename to
different destination, but currently the code collapses these
destination paths and removes the original path, which may be
wrong.  The outcome of this case is not checked by the tests in
this round.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Fredrik points out there is a useful wrapper runProgram() used
everywhere that we can use to feed input into subprocess.  Use
it to catch errors from the subprocess; it is a good cleanup as
well.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This does two things.

 - When one branch renamed and the other branch did not, the
   resulting half-merged file in the working tree used to swap
   branches around and showed as if renaming side was "ours".
   This was confusing and inconsistent (even though the conflict
   markers were marked with branch names, it was not a good
   enough excuse).  This changes the order of arguments to
   mergeFile in such a case to make sure we always see "our"
   change between <<< and ===, and "their" change between ===
   and >>>.

 - When both branches renamed to the same path, and when one
   branch renamed and the other branch did not, we attempt
   mergeFile.  When this automerge conflicted, we used to
   collapse the index.  Now we use update-index --index-info
   to inject higher stage entries to leave the index in unmerged
   state for these two cases.

What this still does _not_ do is to inject unmerged state into
the index when the structural changes conflict.  I have not
thought things through what to do in each case yet, but the
cases this commit cover are the most common ones, so this would
be a good start.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This would help sorting by subject in MUA work saner even though
MUA is too dumb to attempt sorting numbered subjects sanely.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

People seem to be getting test failure from t6021 not becuase
git is faulty but because they forgot to install "merge".  Check
this and other trivial pilot errors in the first test.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Add double quote character to the test pattern.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

In order to support getting data into git with scripts, this adds a
--stdin option to git-hash-object, which will make it read from stdin.
Signed-off-by: NDaniel Barkalow <barkalow@iabervon.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Fix a stupid bug I introduced when splitting the
accurate and fast changeset appliers.

Also, remove an old debugging statement I added
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

This fixes the case (that worked originally in Martin's version)
where the only new/modified files are Arch control files.
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

And make it the default.
This includes stats tracking to verbose mode
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

Better logfile parsing, no longer confused by 'headers' after the first
blank line.

Re-enabled tag-reading with abrowse (baz and tla compatible)

Remove need to quote args to external processes
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

add -D <depth> option to abrowse add -a switch to attempt to
auto-register archives at mirrors.sourcecontrol.net

(ML: Also removes some std libraries no longer in use)
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

use git-diff-files instead of git diff-files so we don't rely on the
wrapper being installed (some people may have git as GNU interactive
tools :)
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

set TMPDIR env correctly if -t <tmpdir> is passed from the command-line.
setting TMPDIR => 1 as an argument to tempdir() has no effect otherwise
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

use safe_pipe_capture() or system() over backticks where
shellquoting may have been necessary.
More changes planned, so I'm not touching the parts I'm
planning on replacing entirely.
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

(ML: And introduce safe_pipe_capture())
Signed-off-by: NEric Wong <normalperson@yhbt.net>
Signed-off-by: NMartin Langhoff <martin@catalyst.net.nz>

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

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

This is just a belts-and-suspenders check, but makes sure we
have both "git" and "git-init-db" built, executable, and
checking.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This is to catch an error where tests are run without first
building what are being tested.  Relying on prefixing $PATH with
the build directory and expect that the PATH mechanism would
find what we just built would silently run an already installed
binaries from the PATH.
Signed-off-by: NAlex Riesen <raa.lkml@gmail.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Explicit <head> arguments to git-prune replaces, instead of
extends, the list of heads used for reachability analysis by
fsck-objects.  By giving a subset of heads by mistake, objects
reachable only from other heads can be removed, resulting in a
corrupted repository.

This commit stops replacing the list of heads, and makes the
command line arguments to add to them instead for safety.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This is a companion patch to e23eff8b
commit.  The same logic, the same rationale that a comparison
function that returns an int should not just compute a ptrdiff_t
and return it.
Signed-off-by: NJunio C Hamano <junkio@cox.net>