void mutt_to_base64 (unsigned char *, const unsigned char *, ssize_t, ssize_t);
int mutt_from_base64 (char *, const char *);
void mutt_to_base64 (unsigned char *, const unsigned char *, ssize_t, ssize_t);
int mutt_from_base64 (char *, const char *);
#define IsPrint(c) (isprint((unsigned char)(c)) || \
(option (OPTLOCALES) ? 0 : \
((unsigned char)(c) >= 0xa0)))
#define IsPrint(c) (isprint((unsigned char)(c)) || \
(option (OPTLOCALES) ? 0 : \
((unsigned char)(c) >= 0xa0)))