nodecopystate
struct nodecopystate st;
copynode(union node *n, struct nodecopystate *state)
copynodelist(struct nodelist *lp, struct nodecopystate *state)
nodesavestr(const char *s, struct nodecopystate *state)
static union node *copynode(union node *, struct nodecopystate *);
static struct nodelist *copynodelist(struct nodelist *, struct nodecopystate *);
static char *nodesavestr(const char *, struct nodecopystate *);