void free_vec PARAMS ((char **));
char **merge_vecs PARAMS ((char **, char **));
slist *slist_append PARAMS ((slist *, const char *));
+slist *slist_prepend PARAMS ((slist *, const char *));
+slist *slist_nreverse PARAMS ((slist *));
int slist_contains PARAMS ((slist *, const char *));
void slist_free PARAMS ((slist *));