char *keys; /* keys used in the prompt */
/* callback to generate an index line for the requested element */
- void (*make_entry) (char *, size_t, struct menu_t *, int);
+ void (*make_entry) (char *, ssize_t, struct menu_t *, int);
/* how to search the menu */
int (*search) (struct menu_t *, regex_t * re, int n);