If you hide a hierarchy of refs using the transfer.hideRefs
config, there is no way to later override that config to
"unhide" it. This patch implements a "negative" hide which
causes matches to immediately be marked as unhidden, even if
another match would hide it. We take care to apply the
matches in reverse-order from how they are fed to us by the
config machinery, as that lets our usual "last one wins"
config precedence work (and entries in .git/config, for
example, will override /etc/gitconfig).
So you can now do:
$ git config --system transfer.hideRefs refs/secret
$ git config transfer.hideRefs '!refs/secret/not-so-secret'
to hide refs/secret in all repos, except for one public bit
in one specific repo. Or you can even do:
$ git clone \
-u "git -c transfer.hiderefs="!refs/foo" upload-pack" \
remote:repo.git
to clone remote:repo.git, overriding any hiding it has
configured.
There are two alternatives that were considered and
rejected:
1. A generic config mechanism for removing an item from a
list. E.g.: (e.g., "[transfer] hideRefs -= refs/foo").
This is nice because it could apply to other
multi-valued config, as well. But it is not nearly as
flexible. There is no way to say:
[transfer]
hideRefs = refs/secret
hideRefs = refs/secret/not-so-secret
Having explicit negative specifications means we can
override previous entries, even if they are not the
same literal string.
2. Adding another variable to override some parts of
hideRefs (e.g., "exposeRefs").
This solves the problem from alternative (1), but it
cannot easily obey the normal config precedence,
because it would use two separate lists. For example:
[transfer]
hideRefs = refs/secret
exposeRefs = refs/secret/not-so-secret
hideRefs = refs/secret/not-so-secret/no-really-its-secret
With two lists, we have to apply the "expose" rules
first, and only then apply the "hide" rules. But that
does not match what the above config intends.
Of course we could internally parse that to a single
list, respecting the ordering, which saves us having to
invent the new "!" syntax. But using a single name
communicates to the user that the ordering _is_
important. And "!" is well-known for negation, and
should not appear at the beginning of a ref (it is
actually valid in a ref-name, but all entries here
should be fully-qualified, starting with "refs/").
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
////////////////////////////////////////////////////////////////
Git - the stupid content tracker
////////////////////////////////////////////////////////////////
"git" can mean anything, depending on your mood.
- random three-letter combination that is pronounceable, and not
actually used by any common UNIX command. The fact that it is a
mispronunciation of "get" may or may not be relevant.
- stupid. contemptible and despicable. simple. Take your pick from the
dictionary of slang.
- "global information tracker": you're in a good mood, and it actually
works for you. Angels sing, and a light suddenly fills the room.
- "goddamn idiotic truckload of sh*t": when it breaks
Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.
Git is an Open Source project covered by the GNU General Public
License version 2 (some parts of it are under different licenses,
compatible with the GPLv2). It was originally written by Linus
Torvalds with help of a group of hackers around the net.
Please read the file INSTALL for installation instructions.
See Documentation/gittutorial.txt to get started, then see
Documentation/giteveryday.txt for a useful minimum set of commands, and
Documentation/git-commandname.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with "man gittutorial" or "git help tutorial", and the
documentation of each command with "man git-commandname" or "git help
commandname".
CVS users may also want to read Documentation/gitcvs-migration.txt
("man gitcvs-migration" or "git help cvs-migration" if git is
installed).
Many Git online resources are accessible from http://git-scm.com/
including full documentation and Git related tools.
The user discussion and development of Git take place on the Git
mailing list -- everyone is welcome to post bug reports, feature
requests, comments and patches to git@vger.kernel.org (read
Documentation/SubmittingPatches for instructions on patch submission).
To subscribe to the list, send an email with just "subscribe git" in
the body to majordomo@vger.kernel.org. The mailing list archives are
available at http://news.gmane.org/gmane.comp.version-control.git/,
http://marc.info/?l=git and other archival sites.
The maintainer frequently sends the "What's cooking" reports that
list the current status of various development topics to the mailing
list. The discussion following them give a good reference for
project status, development direction and remaining tasks.
2bc31d1631