Function edit_patch

builtin/add.c:184–230

}

static int edit_patch(struct repository *repo,
		      int argc,
		      const char **argv,
		      const char *prefix)
{
	char *file = repo_git_path(repo, "ADD_EDIT.patch");
	struct child_process child = CHILD_PROCESS_INIT;
	struct rev_info rev;
	int out;
	struct stat st;

	repo_config(repo, git_diff_basic_config, NULL);

	if (repo_read_index(repo) < 0)
		die(_("could not read the index"));

	repo_init_revisions(repo, &rev, prefix);
	rev.diffopt.context = 7;

	argc = setup_revisions(argc, argv, &rev, NULL);
	rev.diffopt.output_format = DIFF_FORMAT_PATCH;
	rev.diffopt.use_color = GIT_COLOR_NEVER;
	rev.diffopt.flags.ignore_dirty_submodules = 1;
	out = xopen(file, O_CREAT | O_WRONLY | O_TRUNC, 0666);
	rev.diffopt.file = xfdopen(out, "w");
	rev.diffopt.close_file = 1;
	run_diff_files(&rev, 0);

	if (launch_editor(file, NULL, NULL))
		die(_("editing patch failed"));

	if (stat(file, &st))
		die_errno(_("could not stat '%s'"), file);
	if (!st.st_size)
		die(_("empty patch. aborted"));

	child.git_cmd = 1;
	strvec_pushl(&child.args, "apply", "--recount", "--cached", file,
		     NULL);
	if (run_command(&child))
		die(_("could not apply '%s'"), file);

	unlink(file);
	free(file);
	release_revisions(&rev);
	return 0;
}

static const char ignore_error[] =
N_("The following paths are ignored by one of your .gitignore files:\n");