-iconv_t mutt_iconv_open (const char *, const char *, int);
-ssize_t mutt_iconv (iconv_t, const char **, ssize_t *, char **, ssize_t *,
- const char **, const char *);
+int mutt_convert_string(char **, const char *, const char *, int);
+int mutt_convert_nonmime_string (char **);