void mutt_delete_parameter (const char *attribute, PARAMETER ** p);
void mutt_set_parameter (const char *, const char *, PARAMETER **);
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FILE *mutt_open_read (const char *, pid_t *);
void set_quadoption (int, int);
int query_quadoption (int, const char *);
int quadoption (int);
+int mutt_option_value (const char* val, char* dst, size_t dstlen);
+
ADDRESS *mutt_default_from (void);
ADDRESS *mutt_remove_duplicates (ADDRESS *);
ADDRESS *mutt_parse_adrlist (ADDRESS *, const char *);