docs/clone: mention that --local may be ignored

The --local flag is not "treat this like a local
repository", but rather "if we are local, turn on
optimizations". Therefore it does nothing in the case of:

  git clone --local file:///path/to/repo

Let's make that more clear in the documentation.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
clone: allow --no-local to turn off local optimizations

This is basically the same as using "file://", but is a
little less subtle for the end user. It also allows relative
paths to be specified.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
request-pull: really favor a matching tag

After tagging the tip of "dev" branch with a "for-linus" tag and
pushing both out, running

	$ git request-pull $url $last_release dev

would produce an output asking the 'dev' branch of $url to be
pulled, because that is what the user asked the message to say.

We already detect this situation locally and include the contents of
the tag in the output; if the $url has that tag, favor that tag
(i.e. "for-linus") in the generated message over the branch name the
user gave us (i.e. "dev") from the command line, to make the output
look more consistent.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
move git_version_string into version.c

The global git_version_string currently lives in git.c, but
doesn't have anything to do with the git wrapper. Let's move
it into its own file, where it will be more appropriate to
build more version-related functions.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
version: add git_user_agent function

This is basically a fancy way of saying "git/$GIT_VERSION",
except that it is overridable at build-time and through the
environment. Which means that people who don't want to
advertise their git version (for privacy or security
reasons) can tweak it.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
http: get default user-agent from git_user_agent

This means we will respect the GIT_USER_AGENT build-time
configuration and run-time environment variable.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
ls-files -i: pay attention to exclusion of leading paths

"git ls-files --exclude=t/ -i" does not show paths in directory t/
that have been added to the index, but it should.

The excluded() API was designed for callers who walk the tree from
the top, checking each level of the directory hierarchy as it
descends if it is excluded, and not even bothering to recurse into
an excluded directory.  This would allow us optimize for a common
case by not having to check if the exclude pattern "foo/" matches
when looking at "foo/bar", because the caller should have noticed
that "foo" is excluded and did not even bother to read "foo/bar"
out of opendir()/readdir() to call it.

The code for "ls-files -i" however walks the index linearly, feeding
paths without checking if the leading directory is already excluded.

Introduce a helper function path_excluded() to let this caller
properly call excluded() check for higher hierarchies as necessary.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
ls-files -i: micro-optimize path_excluded()

As we know a caller that does not recurse is calling us in the index
order, we can remember the last directory we found to be excluded
and see if the path we are looking at is still inside it, in which
case we can just answer that it is excluded.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
tweak "bundle verify" of a complete history

A bundle that records a complete history without prerequiste is a
useful way to sneakernet the sources of your configuration files
under your home directory, etc.  E.g.

    $ GIT_DIR=/srv/git/homesrc.git git bundle create x.bndl HEAD master

Running "git bundle verify" on such a "complete" bundle, however,
gives somewhat a funny output.

    $ git bundle verify x.bndl
    The bundle contains 2 refs
    b2611f37ebc7ed6435a72d77fbc5f8b48a7d7146 HEAD
    b2611f37ebc7ed6435a72d77fbc5f8b48a7d7146 refs/heads/master
    The bundle requires these 0 refs
    x.bndl is okay

Reword "requires these 0 refs" to say "The bundle records a complete
history" instead.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
path_excluded(): update API to less cache-entry centric

It was stupid of me to make the API too much cache-entry specific;
the caller may want to check arbitrary pathname without having a
corresponding cache-entry to see if a path is ignored.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
builtin/add.c: use path_excluded()

This only happens in --ignore-missing --dry-run codepath which
presumably nobody should care, but is for completeness.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
unpack-trees.c: use path_excluded() in check_ok_to_remove()

This function is responsible for determining if a path that is not
tracked is ignored and allow "checkout" to overwrite it as needed.
It used excluded() without checking if higher level directory in the
path is ignored; correct it to use path_excluded() for this check.

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

 * There are uses of lower-level interface excluded_from_list() in
   the codepath for narrow-checkout hack; they are supposed to be
   already checking each level as they descend, and are not touched
   with this patch.
dir.c: make excluded() file scope static

Now there no longer is external callers of this interface, so we can
make it static.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
help: use HTML as the default help format on Windows

When 'git help $cmd' is run without a format option (e.g. -w), the
'man' format is always used. On some platforms, however, manual page
viewers are not often available.

Introduce DEFAULT_HELP_FORMAT make variable in order to allow the
default format configurable at compile time, and set it to HTML when
compiling on Windows (but not Cygwin).

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Vincent van Ravesteijn <vfr@lyx.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
t1304: improve setfacl prerequisite setup

t1304 first runs setfacl as an experiment to see whether the
filesystem supports ACLs, and skips the remaining tests if
it does not. However, our setfacl run did not exercise the
ACLs very well, and some filesystems may support our initial
setfacl, but not the rest of the test.

In particular, some versions of ecryptfs will erroneously
apply the umask on top of an inherited directory ACL,
causing our tests to fail. Let's be more careful and make
sure both that we can read back the user ACL we set, and
that the inherited ACL is propagated correctly. The latter
catches the ecryptfs bug, but may also catch other bugs
(e.g., an implementation which does not handle inherited
ACLs at all).

Since we're making the setup more complex, let's move it
into its own test. This will hide the output for us unless
the user wants to run "-v" to see it (and we don't need to
bother printing anything about setfacl failing; the
remaining tests will properly print "skip" due to the
missing prerequisite).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Kick off post 1.7.11 cycle

I haven't decided what to call this one, 1.7.12, 1.8.0, or even 2.0.
Given that summer is a relatively slow season, I suspect 1.7.12 is
the most likely outcome, but we will see.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'jc/bundle-complete-notice'

Running "git bundle verify" on a bundle that records a complete
history said "it requires these 0 commits".

* jc/bundle-complete-notice:
  tweak "bundle verify" of a complete history
Merge branch 'jk/clone-local'

"git clone --local $path" started its life as an experiment to
optionally use link/copy when cloning a repository on the disk, but
we didn't deprecate it after we made the option a no-op to always
use the optimization.

The command learns "--no-local" option to turn this off, as a more
explicit alternative over use of file:// URL.

* jk/clone-local:
  clone: allow --no-local to turn off local optimizations
  docs/clone: mention that --local may be ignored
Merge branch 'jc/request-pull-match-tagname'

"git request-pull $url dev" when the tip of "dev" branch was tagged
with "ext4-for-linus" used the contents from the tag in the output
but still asked the "dev" branch to be pulled, not the tag.

* jc/request-pull-match-tagname:
  request-pull: really favor a matching tag
Merge branch 'jk/version-string'

Teaches git native protocol agents to show software version over the
wire.

* jk/version-string:
  http: get default user-agent from git_user_agent
  version: add git_user_agent function
  move git_version_string into version.c