Function edit_and_replace

builtin/replace.c:325–365

}

static int edit_and_replace(const char *object_ref, int force, int raw)
{
	char *tmpfile;
	enum object_type type;
	struct object_id old_oid, new_oid, prev;
	struct strbuf ref = STRBUF_INIT;

	if (repo_get_oid(the_repository, object_ref, &old_oid) < 0)
		return error(_("not a valid object name: '%s'"), object_ref);

	type = odb_read_object_info(the_repository->objects, &old_oid, NULL);
	if (type < 0)
		return error(_("unable to get object type for %s"),
			     oid_to_hex(&old_oid));

	if (check_ref_valid(&old_oid, &prev, &ref, force)) {
		strbuf_release(&ref);
		return -1;
	}
	strbuf_release(&ref);

	tmpfile = repo_git_path(the_repository, "REPLACE_EDITOBJ");
	if (export_object(&old_oid, type, raw, tmpfile)) {
		free(tmpfile);
		return -1;
	}
	if (launch_editor(tmpfile, NULL, NULL) < 0) {
		free(tmpfile);
		return error(_("editing object file failed"));
	}
	if (import_object(&new_oid, type, raw, tmpfile)) {
		free(tmpfile);
		return -1;
	}
	free(tmpfile);

	if (oideq(&old_oid, &new_oid))
		return error(_("new object is the same as the old one: '%s'"), oid_to_hex(&old_oid));

	return replace_object_oid(object_ref, &old_oid, "replacement", &new_oid, force);
}

static int replace_parents(struct strbuf *buf, int argc, const char **argv)
{