Script to reproduce libgit2#2515

staged-versions-libgit2.c

#include <stdio.h>
#include <git2.h>

int main(int argc, char *argv[]) {
    int error;

    git_repository *repo = NULL;
    git_checkout_options options = GIT_CHECKOUT_OPTIONS_INIT;

    git_threads_init();

    error = git_repository_open(&repo, argv[1]);
    if (error < 0) goto error;

    options.checkout_strategy = GIT_CHECKOUT_FORCE;
    error = git_checkout_head(repo, &options);
    if (error < 0) goto error;

    git_repository_free(repo);

    return 0;

error:
    {
        const git_error *e = giterr_last();
        printf("Error %d/%d: %s\n", error, e->klass, e->message);
        exit(error);
    }
}

staged-versions-libgit2.py

import pygit2
import sys
import os.path
import sh

def write_to_file(repository, path, content):
    with open(os.path.join(repository.workdir, path), 'w') as f:
        f.write(content)
    repository.index.add(path)

def commit(repository, signature):
    repository.index.write()
    tree = repository.index.write_tree()

    parents = []
    if repository.head_is_unborn:
        tip = 'refs/heads/master'
    else:
        tip = repository.head.name
        parents.append(repository.head.target)

    return repository.create_commit(
        tip,
        signature, signature, 'message',
        tree, parents
    )

if __name__ == '__main__':
    print 'pygit2', pygit2.__version__

    path = sys.argv[1]
    signature = pygit2.Signature('Alice', 'alice@example.com')

    repository = pygit2.init_repository(path)
    conflict_file = 'conflict'

    write_to_file(repository, conflict_file, 'A')
    commit(repository, signature)
    first_commit = repository.head.get_object()

    write_to_file(repository, conflict_file, 'B')
    commit(repository, signature)

    branch = repository.create_branch('branch1', first_commit)
    repository.checkout(branch.name)
    write_to_file(repository, conflict_file, 'C')
    commit(repository, signature)

    repository.merge(repository.lookup_branch('master').target)
    repository.checkout_head(strategy=pygit2.GIT_CHECKOUT_FORCE)

    print sh.git('--git-dir=' + repository.path, 'ls-files', '-s')