nesting_state
struct nesting_state old_nesting;
struct nesting_state old_nesting;
static void nesting_push(struct nesting_state *, int);
static void nesting_pop(struct nesting_state *);
static struct nesting_state nesting; /* \n changed to ; */
nesting_push(struct nesting_state *save, int tok)
nesting_pop(struct nesting_state *saved)