char outbuf[12];
size_t outbytesleft = sizeof(outbuf);
char *outp = outbuf;
size_t r = yaz_iconv(mt->iconv_cd, 0, 0, &outp, &outbytesleft);
if (r != (size_t) (-1))
wrbuf_write(wr, outbuf, outp - outbuf);
char outbuf[12];
size_t outbytesleft = sizeof(outbuf);
char *outp = outbuf;
size_t r = yaz_iconv(mt->iconv_cd, 0, 0, &outp, &outbytesleft);
if (r != (size_t) (-1))
wrbuf_write(wr, outbuf, outp - outbuf);