mirror of
https://github.com/git/git.git
synced 2026-04-14 02:40:08 +02:00
f899957fa7
While the xdiff machinery is quite capable of working with strings given as pointer and size, Git's add-on functionality simply assumes that we are operating on NUL-terminated strings, e.g. y running regexec() on the provided pointer, with no way to pass the size, too. In general, this assumption is wrong. It is true that many code paths populate the mmfile_t structure silently appending a NUL, e.g. when running textconv on a temporary file and reading the results back into an strbuf. The assumption is most definitely wrong, however, when mmap()ing a file. Practically, we seemed to be lucky that the bytes after mmap()ed memory were 1) accessible and 2) somehow contained NUL bytes *somewhere*. In a use case reported by Chris Sidi, it turned out that the mmap()ed file had the precise size of a memory page, and on Windows the bytes after memory-mapped pages are in general not valid. This patch works around that issue, giving us time to discuss the best course how to fix this problem more generally. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
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.
Please read the file INSTALL for installation instructions.
Many Git online resources are accessible from http://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-.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). 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.
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