void mutt_block_signals_system (void);
void mutt_body_handler (BODY *, STATE *);
int mutt_bounce_message (FILE *fp, HEADER *, ADDRESS *);
+void mutt_break_thread (HEADER *);
void mutt_buffy (char *, size_t);
int mutt_buffy_list (void);
void mutt_canonical_charset (char *, size_t, const char *);
int mutt_is_subscribed_list (ADDRESS *);
int mutt_is_text_part (BODY *);
int mutt_is_valid_mailbox (const char *);
+int mutt_link_threads (HEADER *, HEADER *, CONTEXT *);
int mutt_lookup_mime_type (BODY *, const char *);
int mutt_match_rx_list (const char *, RX_LIST *);
int mutt_messages_in_thread (CONTEXT *, HEADER *, int);