static const char *get_text_charset (BODY *b, CONTENT *info)
static const char *get_text_charset (char *d, size_t dlen, BODY *b, CONTENT *info)
static const char *get_text_charset (BODY *b, CONTENT *info){  char send_charset[SHORT_STRING];  char *chsname;  chsname = mutt_get_send_charset (send_charset, sizeof (send_charset), b, 1);    /* if charset is unknown assume low bytes are ascii compatible */  if ((chsname == NULL || mutt_strcasecmp (chsname, "us-ascii") == 0)      && info->hibin)    return ("unknown-8bit");  if (info->hibin || !strcasecmp (chsname, "utf-7"))    return (chsname);  if (info->lobin && !strcasecmp (chsname, "iso-2022-jp"))    return (chsname);    return ("us-ascii");}