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The functions provided by the "path" subsystem to derive repository
paths for the commondir, gitdir, worktrees and submodules are quite
inconsistent. Some functions have a `strbuf_` prefix, others have
different return values, some don't provide a variant working on top of
`strbuf`s.
We're thus about to refactor all of these family of functions so that
they follow a common pattern:
- `repo_*_path()` returns an allocated string.
- `repo_*_path_append()` appends the path to the caller-provided
buffer while returning a constant pointer to the buffer. This
clarifies whether the buffer is being appended to or rewritten,
which otherwise wasn't immediately obvious.
- `repo_*_path_replace()` replaces contents of the buffer with the
computed path, again returning a pointer to the buffer contents.
The returned constant pointer isn't being used anywhere yet, but it will
be used in subsequent commits. Its intent is to allow calling patterns
like the following somewhat contrived example:
if (!stat(&st, repo_common_path_replace(repo, &buf, ...)) &&
!unlink(repo_common_path_replace(repo, &buf, ...)))
...
Refactor the commondir family of functions accordingly and adapt all
callers.
Note that `repo_common_pathv()` is converted into an internal
implementation detail. It is only used to implement `the_repository`
compatibility shims and will eventually be removed from the public
interface.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git - fast, scalable, distributed revision control system
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.
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Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.
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).
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 and Documentation/CodingGuidelines).
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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.
The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (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