Chris Darroch ca7b9f1e39 fixup! run-command: be helpful with Git LFS fails on Windows 7
This commit refines the Git LFS check on Windows 7.

In commit git-for-windows/git@46d14a6f71 of
PR git-for-windows/git#5042 the wait_or_whine() function in run-command.c
was revised to call a new function in the case where an executable fails
to run, to check whether this was caused by a Git LFS binary compiled
with a version of the Go language that no longer supports Windows 7.
This change was made to address the issue reported in
git-for-windows/git#4996.

The new function, win32_warn_about_git_lfs_on_windows7(), performs
several initial checks to test whether the failed executable returned
the exit code 0x0b00 and is named "git-lfs", and whether we are
running Windows 7 or not.  Only if all these conditions are met does
it then proceed to try to extract the Go language version from the
binary file and check whether it is 1.21.0 or higher.

However, these initial checks may not cover all possible use and
failure cases.

First, when running in Git Bash, the exit code seen from a recent Git
LFS executable was 0x02. It would therefore appear that the exact exit
code value is not reliable, so we want to check for a non-zero exit code
instead.

Second, the name of the executable may not always be entirely lowercase,
since it is possible to invoke Git LFS through Git by running, for
example, "git LFS ls-files" (at least, on Windows, and with a
case-insensitive filesystem).  We therefore need to ignore case when
checking the executable's name.

And third, the name of the executable may not have a trailing space
character, so we also need to check for the case where the name in
argv0 is simply "git-lfs".

With these changes, we can more reliably detect a failure of the Git LFS
executable in a wider range of circumstances.

Signed-off-by: Chris Darroch <chrisd8088@github.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
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Git for Windows

Contributor Covenant Open in Visual Studio Code Build status Join the chat at https://gitter.im/git-for-windows/git

This is Git for Windows, the Windows port of Git.

The Git for Windows project is run using a governance model. If you encounter problems, you can report them as GitHub issues, discuss them on Git for Windows' Google Group, and contribute bug fixes.

To build Git for Windows, please either install Git for Windows' SDK, start its git-bash.exe, cd to your Git worktree and run make, or open the Git worktree as a folder in Visual Studio.

To verify that your build works, use one of the following methods:

  • If you want to test the built executables within Git for Windows' SDK, prepend <worktree>/bin-wrappers to the PATH.

  • Alternatively, run make install in the Git worktree.

  • If you need to test this in a full installer, run sdk build git-and-installer.

  • You can also "install" Git into an existing portable Git via make install DESTDIR=<dir> where <dir> refers to the top-level directory of the portable Git. In this instance, you will want to prepend that portable Git's /cmd directory to the PATH, or test by running that portable Git's git-bash.exe or git-cmd.exe.

  • If you built using a recent Visual Studio, you can use the menu item Build>Install git (you will want to click on Project>CMake Settings for Git first, then click on Edit JSON and then point installRoot to the mingw64 directory of an already-unpacked portable Git).

    As in the previous bullet point, you will then prepend /cmd to the PATH or run using the portable Git's git-bash.exe or git-cmd.exe.

  • If you want to run the built executables in-place, but in a CMD instead of inside a Bash, you can run a snippet like this in the git-bash.exe window where Git was built (ensure that the EOF line has no leading spaces), and then paste into the CMD window what was put in the clipboard:

    clip.exe <<EOF
    set GIT_EXEC_PATH=$(cygpath -aw .)
    set PATH=$(cygpath -awp ".:contrib/scalar:/mingw64/bin:/usr/bin:$PATH")
    set GIT_TEMPLATE_DIR=$(cygpath -aw templates/blt)
    set GITPERLLIB=$(cygpath -aw perl/build/lib)
    EOF
    
  • If you want to run the built executables in-place, but outside of Git for Windows' SDK, and without an option to set/override any environment variables (e.g. in Visual Studio's debugger), you can call the Git executable by its absolute path and use the --exec-path option, like so:

    C:\git-sdk-64\usr\src\git\git.exe --exec-path=C:\git-sdk-64\usr\src\git help
    

    Note: for this to work, you have to hard-link (or copy) the .dll files from the /mingw64/bin directory to the Git worktree, or add the /mingw64/bin directory to the PATH somehow or other.

To make sure that you are testing the correct binary, call ./git.exe version in the Git worktree, and then call git version in a directory/window where you want to test Git, and verify that they refer to the same version (you may even want to pass the command-line option --build-options to look at the exact commit from which the Git version was built).

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 core 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. The core git mailing list is plain text (no HTML!).

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
Description
A fork of Git containing Windows-specific patches.
Readme 456 MiB
2025-08-19 03:50:05 -05:00
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