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Taylor Blau 53ea3ec479 pack-bitmap-write.c: write pseudo-merge table
Now that the pack-bitmap writer machinery understands how to select and
store pseudo-merge commits, teach it how to write the new optional
pseudo-merge .bitmap extension.

No readers yet exist for this new extension to the .bitmap format. The
following commits will take any preparatory step(s) necessary before
then implementing the routines necessary to read this new table.

In the meantime, the new `write_pseudo_merges()` function implements
writing this new format as described by a previous commit in
Documentation/technical/bitmap-format.txt.

Writing this table is fairly straightforward and consists of a few
sub-components:

  - a pair of bitmaps for each pseudo-merge (one for the pseudo-merge
    "parents", and another for the objects reachable from those parents)

  - for each commit, the offset of either (a) the pseudo-merge it
    belongs to, or (b) an extended lookup table if it belongs to >1
    pseudo-merge groups

  - if there are any commits belonging to >1 pseudo-merge group, the
    extended lookup tables (which each consist of the number of
    pseudo-merge groups a commit appears in, and then that many 4-byte
    unsigned )

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-05-24 11:40:42 -07:00
.github
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Documentation pseudo-merge: implement support for selecting pseudo-merge commits 2024-05-24 11:40:42 -07:00
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README.md

Build status

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 and Documentation/CodingGuidelines).

Those wishing to help with error message, usage and informational message string translations (localization l10) should see po/README.md (a po file is a Portable Object file that holds the translations).

To subscribe to the list, send an email to git+subscribe@vger.kernel.org (see https://subspace.kernel.org/subscribing.html for details). The mailing list archives are available at https://lore.kernel.org/git/, https://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