iconv_t mutt_iconv_open (const char *, const char *, int);
size_t mutt_iconv (iconv_t, ICONV_CONST char **, size_t *, char **, size_t *, ICONV_CONST char **, const char *);
iconv_t mutt_iconv_open (const char *, const char *, int);
size_t mutt_iconv (iconv_t, ICONV_CONST char **, size_t *, char **, size_t *, ICONV_CONST char **, const char *);