void mdoc_sibling(struct mdoc *, int, struct mdoc_node **,
struct mdoc_node **, struct mdoc_node *);
void *mdoc_tokhash_alloc(void);
int mdoc_tokhash_find(const void *, const char *);
void mdoc_tokhash_free(void *);
void mdoc_sibling(struct mdoc *, int, struct mdoc_node **,
struct mdoc_node **, struct mdoc_node *);
void *mdoc_tokhash_alloc(void);
int mdoc_tokhash_find(const void *, const char *);
void mdoc_tokhash_free(void *);