int rfc1524_expand_command(BODY *, const char *, const char *, char *, int);
int rfc1524_expand_filename(char *, char *, char *, ssize_t);
int rfc1524_expand_command(BODY *, const char *, const char *, char *, int);
int rfc1524_expand_filename(char *, char *, char *, ssize_t);