int mutt_check_month (const char *);
int mutt_check_overwrite (const char *, const char *, char *, ssize_t, int *,
char **);
-int mutt_check_traditional_pgp (HEADER *, int *);
int mutt_command_complete (char *, ssize_t, int, int);
int mutt_var_value_complete (char *, ssize_t, int);