The -u option to override the remote system's path to git-upload-pack was
being ignored by "git clone"; caused by a missing call to
transport_set_option to set TRANS_OPT_UPLOADPACK. Presumably this crept in
when git-clone was converted from shell to C.
Signed-off-by: NSteve Haslam <shaslam@lastminute.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The diff.external examples pass a flag to gnu-diff, but GNU diff
does not follow the GIT_EXTERNAL_DIFF interface.
Signed-off-by: NAnders Melchiorsen <mail@cup.kalibalik.dk>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

A wildcard refspec is internally parsed into a refspec structure with src
and dst strings.  Many parts of the code assumed that these do not include
the trailing "/*" when matching the wildcard pattern with an actual ref we
see at the remote.  What this meant was that we needed to make sure not
just that the prefix matched, and also that a slash followed the part that
matched.

But a codepath that scans the result from ls-remote and finds matching
refs forgot to check the "matching part must be followed by a slash" rule.
This resulted in "refs/heads/b1" from the remote side to mistakenly match
the source side of "refs/heads/b/*:refs/remotes/b/*" refspec.

Worse, the refspec crafted internally by "git-clone", and a hardcoded
preparsed refspec that is used to implement "git-fetch --tags", violated
this "parsed widcard refspec does not end with slash" rule; simply adding
the "matching part must be followed by a slash" rule then would have
broken codepaths that use these refspecs.

This commit changes the rule to require a trailing slash to parsed
wildcard refspecs.  IOW, "refs/heads/b/*:refs/remotes/b/*" is parsed as
src = "refs/heads/b/" and dst = "refs/remotes/b/".  This allows us to
simplify the matching logic because we only need to do a prefixcmp() to
notice "refs/heads/b/one" matches and "refs/heads/b1" does not.
Acked-by: NDaniel Barkalow <barkalow@iabervon.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If a user passes "--template=", then our template parameter
is blank. Unfortunately, copy_templates() assumes it has at
least one character, and does all sorts of bad things like
reading from template[-1] and then proceeding to link all of
'/' into the .git directory.

This patch just checks for that condition in copy_templates
and aborts. As a side effect, this means that --template=
now has the meaning "don't copy any templates."
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NStephan Beyer <s-beyer@gmx.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Makefile records paths to a few programs in GIT-BUILD-OPTIONS file.  These
paths need to be quoted twice: once to protect specials from the shell
that runs the generated GIT-BUILD-OPTIONS file, and again to protect them
(and the first level of quoting itself) from the shell that runs the
"echo" inside the Makefile.

You can test this by trying:

    $ ln -s /bin/tar "$HOME/Tes' program/tar"
    $ make TAR="$HOME/Tes' program/tar" test
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

When index-pack completes a thin pack it appends objects to the pack.
Since the commit 92392b4a(index-pack: Honor core.deltaBaseCacheLimit when
resolving deltas) such an object can be pruned in case of memory
pressure, and will be read back again by get_data_from_pack().  For this
to work, the fields in object_entry structure need to be initialized
properly.

Noticed by Pierre Habouzit.
Signed-off-by: NBjörn Steinbrink <B.Steinbrink@gmx.de>
Acked-by: NNicolas Pitre <nico@cam.org>
Acked-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

In 8291db6f (git-send-email: add charset header if we add encoded 'From',
2007-11-16), "$1" is used from a regexp without using () to capture
anything in $1. Later, when that value was used, it causes a warning about
a variable being undefined, instead of using the correct value for
comparison (not that it makes difference in the current code that does not
do actual re-encoding).
Signed-off-by: NPeter Valdemar Mørch <peter@morch.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This fixes an issue when you use:

    $ git checkout -- <path1> [<paths>...]

and that <path1> can also be understood as a reference. git-checkout
mistakenly understands this as the same as:

    $ git checkout <path1> -- [<paths>...]

because parse-options was eating the '--' and the argument parser thought
he was parsing:

    $ git checkout <path1> [<paths>...]

Where there indeed is an ambiguity
Signed-off-by: NPierre Habouzit <madcoder@debian.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Without this patch, git-grep gives confusing usage information:

	$ git grep --confused
	usage: git grep <option>* <rev>* [-e] <pattern> [<path>...]
	$ git grep HEAD pattern
	fatal: ambiguous argument 'pattern': unknown revision or path no
	t in the working tree.
	Use '--' to separate paths from revisions

So put <pattern> before the <rev>s, in accordance with actual correct
usage.  While we're changing the usage string, we might as well include
the "--" separating revisions and paths, too.
Signed-off-by: NJonathan Nieder <jrnieder@uchicago.edu>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

5fdeacb0 (Teach update-index about --ignore-submodules, 2008-05-14) added a
new refresh option flag but did not assign a unique bit for it correctly,
and broke "update-index --ignore-missing".

This fixes it.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

When hold_locked_index() is called with a relative git_dir and you are
outside the work tree, the lock file become relative to the current
directory. So when later setup_work_tree() change the current directory
it breaks lock file path and commit_locked_index() fails.

This patch move index locking code after setup_work_tree() call to make
lock file relative to the working tree as it should be and add a test
case.

Noticed by Nick Andrew.
Signed-off-by: NOlivier Marin <dkr@freesurf.fr>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* sp/maint-index-pack:
  index-pack: Honor core.deltaBaseCacheLimit when resolving deltas
  index-pack: Track the object_entry that creates each base_data
  index-pack: Chain the struct base_data on the stack for traversal
  index-pack: Refactor base arguments of resolve_delta into a struct

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

Nick Andrew noticed that rev-list lets --quiet option to be parsed by
underlying diff_options parser but did not pick up the result.  This
resulted in --quiet option to become effectively a no-op.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Replace "run_command_v_opt_dir" by "run_command_v_opt_cd".
Signed-off-by: NStephan Beyer <s-beyer@gmx.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

If the repo is empty, it is obvious that there are no common commits
when fetching from _anywhere_.

So there is no use in saying it in that case, and it can even be
annoying.  Therefore suppress the message unilaterally if the repository
is empty prior to the fetch.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* js/maint-pretty-mailmap:
  Add pretty format %aN which gives the author name, respecting .mailmap

* sp/maint-bash-completion-optim:
  bash completion: Resolve git show ref:path<tab> losing ref: portion
  bash completion: Append space after file names have been completed
  bash completion: Don't offer "a.." as a completion for "a."
  bash completion: Improve responsiveness of git-log completion

* sp/maint-pack-memuse:
  Correct pack memory leak causing git gc to try to exceed ulimit

* ls/maint-mailinfo-patch-label:
  git-mailinfo: Fix getting the subject from the in-body [PATCH] line

* js/maint-daemon-syslog:
  git daemon: avoid calling syslog() from a signal handler

When "rebase -i -p" tries to preserve merges of unrelated branches, it
lost some parents:

 - When you have more than two parents, the commit in the new history
   ends up with fewer than expected number of parents and this breakage
   goes unnoticed;

 - When you are rebasing a merge with two parents and one is lost, the
   command tries to cherry-pick the original merge commit, and the command
   fails.
Signed-off-by: NStephan Beyer <s-beyer@gmx.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

It used plain 'if git merge ...', which hides a segfault. The test does not pass.
Signed-off-by: NJohannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If PATH_MAX on your system is smaller than a path stored in the git repo,
it may cause the buffer overflow in prepare_attr_stack.
Signed-off-by: NDmitry Potapov <dpotapov@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If PATH_MAX on your system is smaller than a path stored, it may cause
buffer overflow and stack corruption in diff_addremove() and diff_change()
functions when running git-diff
Signed-off-by: NDmitry Potapov <dpotapov@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If PATH_MAX on your system is smaller than any path stored in the git
repository, that can cause memory corruption inside of the grep_tree
function used by git-grep.
Signed-off-by: NDmitry Potapov <dpotapov@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

git-cvsserver.perl contained a single call to a nonexistant function
cleanupWorkDir(). This was obviously a typo for cleanupWorkTree().
Signed-off-by: NLars Noschinski <lars@public.noschinski.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The manual page of git-cherry-pick and git-revert asserts that -n works
primarily on the working tree, while in fact the primary object it operates
on is the index, and the changes only "accidentally" propagate to the
working tree. This e.g. leads innocent #git IRC folks to believe that you
can use -n to prepare changes for git-add -i staging.
Signed-off-by: NPetr Baudis <pasky@suse.cz>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If we are trying to resolve deltas for a long delta chain composed
of multi-megabyte objects we can easily run into requiring 500M+
of memory to hold each object in the chain on the call stack while
we recurse into the dependent objects and resolve them.

We now use a simple delta cache that discards objects near the
bottom of the call stack first, as they are the most least recently
used objects in this current delta chain.  If we recurse out of a
chain we may find the base object is no longer available, as it was
free'd to keep memory under the deltaBaseCacheLimit.  In such cases
we must unpack the base object again, which will require recursing
back to the root of the top of the delta chain as we released that
root first.

The astute reader will probably realize that we can still exceed
the delta base cache limit, but this happens only if the most
recent base plus the delta plus the inflated dependent sum up to
more than the base cache limit.  Due to the way patch_delta is
currently implemented we cannot operate in less memory anyway.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If we free the data stored within a base_data we need the struct
object_entry to get the data back again for use with another dependent
delta.  Storing the object_entry* in base_data makes it simple to call
get_data_from_pack() to recover the compressed information.

This however means that we must add the missing base object to the end of
our packfile prior to calling resolve_delta() on each of the dependent
deltas.  Adding the base first ensures we can read the base back from the
pack we are indexing, as if it had been included by the remote side.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

We need to release earlier inflated base objects when memory gets
low, which means we need to be able to walk up or down the stack
to locate the objects we want to release, and free their data.

The new link/unlink routines allow inserting and removing the struct
base_data during recursion inside resolve_delta, and the global
base_cache gives us the head of the chain (bottom of the stack)
so we can traverse it.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

We need to discard base objects which are not recently used if our
memory gets low, such as when we are unpacking a long delta chain
of a very large object.

To support tracking the available base objects we combine the
pointer and size into a struct.  Future changes would allow the
data pointer to be free'd and marked NULL if memory gets low.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Linus reported that the bash completion for git show often dropped
the ref portion of the argument (stuff before the :) when trying
to complete a file name of a file in another branch or tag.

Björn Steinbrink tracked it down to the gvfs completion script
which comes standard on many Fedora Core based systems.  That is
removing : from COMP_WORDBREAKS, making readline treat the entire
argument (including the ref) as the name that must be completed.
When the git completion routines supplied a completion of just the
filename, readline replaced everything.

Since Git users often need to use "ref:path" or "ref:ref" sort of
arguments, and expect completion support on both sides of the :
we really want the : in COMP_WORDBREAKS to provide a good user
experience.  This is also the default that ships with bash as it
can be useful in other contexts, such as rcp/scp.

We now try to add : back to COMP_WORDBREAKS if it has been removed
by a script that loaded before us.  However if this doesn't work
(as the : is stripped after we load) we fallback in the completion
routines to include "ref:" as part of the prefix for completions,
allowing readine to fully insert the argument the user wanted.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When completing `git show origin/maint:Makef<tab>` we should add a
space after the filename has been completed, so that the user can
immediately begin the next argument.

I also added a special case for the symlink variant so we treat it
just like a normal blob, as there are no items below it in the Git
tree structure.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

"Subject: " isn't in the static array "header", and thus
memcmp("Subject:", header[i], 7) will never match.

Even if it did so, hdr_data[] may not have been allocated if there weren't
a "Subject: " in-body when we process "[PATCH]" in the affected codepath.
Signed-off-by: NLukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If the user is trying to complete "v1.5.3.<tab>" to see all of
the available maintenance releases for 1.5.3 we should not give
them an extra dot as the completion.  Instead if the user wants
a ".." or a "..." operator they should key the two dots out on
their own.  Its the same number of keystrokes either way.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>