LIST *mutt_parse_references (char *, int);
ENVELOPE *mutt_read_rfc822_header (FILE *, HEADER *, short, short);
HEADER *mutt_dup_header (HEADER *);
int mutt_cmp_header (const HEADER*, const HEADER*);
LIST *mutt_parse_references (char *, int);
ENVELOPE *mutt_read_rfc822_header (FILE *, HEADER *, short, short);
HEADER *mutt_dup_header (HEADER *);
int mutt_cmp_header (const HEADER*, const HEADER*);