(*parse->left->func)( parse->left, frame ), (*parse->right->func)( parse->right, frame ) );
parse_evaluate( parse->left, frame ), parse_evaluate( parse->right, frame ) );
compile_append(    PARSE   *parse,    FRAME *frame ){    /* Append right to left. */    return list_append(         (*parse->left->func)( parse->left, frame ),        (*parse->right->func)( parse->right, frame ) );}