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b74cf64803
If you ask for-each-ref to print each ref and its object, like: git for-each-ref --format='%(objectname) %(refname)' this should involve little more work than looking at the ref files (and packed-refs) themselves. However, for-each-ref will actually load each object from disk just to print its sha1. For most repositories, this isn't a big deal, but it can be noticeable if you have a large number of refs to print. Here are best-of-five timings for the command above on a repo with ~10K refs: [before] real 0m0.112s user 0m0.092s sys 0m0.016s [after] real 0m0.014s user 0m0.012s sys 0m0.000s This patch checks for %(objectname) and %(objectname:short) before we actually parse the object (and the rest of the code is smart enough to avoid parsing if we have filled all of our placeholders). Note that we can't simply move the objectname parsing code into the early loop. If the "deref" form %(*objectname) is used, then we do need to parse the object in order to peel the tag. So instead of moving the code, we factor it out into a separate function that can be called for both cases. While we're at it, we add some basic tests for the dereferenced placeholders, which were not tested at all before. This helps ensure we didn't regress that case. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Git - the stupid content tracker
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"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/everyday.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.