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The MSVC runtime behavior differs from glibc's with respect to `fprintf(stderr, ...)` in that the former writes out the message character by character. In t5516, this leads to a funny problem where a `git fetch` process as well as the `git upload-pack` process spawned by it _both_ call `die()` at the same time. The output can look like this: fatal: git uploadfata-lp: raemcokte :error: upload-pnot our arcef k6: n4ot our ea4cr1e3f 36d45ea94fca1398e86a771eda009872d63adb28598f6a9 8e86a771eda009872d6ab2886 Let's avoid this predicament altogether by rendering the entire message, including the prefix and the trailing newline, into the buffer we already have (and which is still fixed size) and then write it out via `write_in_full()`. We still clip the message to at most 4095 characters. The history of `vreportf()` with regard to this issue includes the following commits:d048a96e(2007-11-09) - 'char msg[256]' is introduced to avoid interleaving389d1767(2009-03-25) - Buffer size increased to 1024 to avoid truncation625a860c(2009-11-22) - Buffer size increased to 4096 to avoid truncationf4c3edc0(2015-08-11) - Buffer removed to avoid truncationb5a9e435(2017-01-11) - Revertsf4c3edc0to be able to replace control chars before sending to stderr9ac13ec9(2006-10-11) - Another attempt to solve interleaving. This is seemingly related tod048a96e.137a0d0e(2007-11-19) - Addresses out-of-order for display()34df8aba(2009-03-10) - Switches xwrite() to fprintf() in recv_sideband() to support UTF-8 emulationeac14f89(2012-01-14) - Removes the need for fprintf() for UTF-8 emulation, so it's safe to use xwrite() again5e5be9e2(2016-06-28) - recv_sideband() uses xwrite() again Note that we print nothing if the `vsnprintf()` call failed to render the error message; There is little we can do in that case, and it should not happen anyway. The process may have written to `stderr` and there may be something left in the buffer kept in the stdio layer. Call `fflush(stderr)` before writing the message we prepare in this function. Helped-by: Jeff King <peff@peff.net> Helped-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com> Helped-by: SZEDER Gábor <szeder.dev@gmail.com> Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> 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.
Please read the file INSTALL for installation instructions.
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). 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 https://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.
Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.
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