node_new
n = node_new(parent, o->n_key, o->n_options, o->n_location,
node_new(parent, key, NULL, NULL, map, lineno);
node = node_new(parent, key, options, NULL, map, lineno);
node_new(node, mountpoint, options2, location,
node_new(parent, key, NULL, NULL, map, lineno);
struct node *node_new(struct node *parent, char *key, char *options,