int mutt_is_valid_mailbox (const char *);
int mutt_lookup_mime_type (BODY *, const char *);
int mutt_match_spam_list (const char *, SPAM_LIST *, char *, int);
int mutt_multi_choice (char *prompt, char *letters);
int mutt_is_valid_mailbox (const char *);
int mutt_lookup_mime_type (BODY *, const char *);
int mutt_match_spam_list (const char *, SPAM_LIST *, char *, int);
int mutt_multi_choice (char *prompt, char *letters);