utf8_tocstr
s = utf8_tocstr(ud);
s = utf8_tocstr(ud);
s = utf8_tocstr(c->prompt_buffer);
s = utf8_tocstr(c->prompt_buffer);
s = utf8_tocstr(c->prompt_buffer);
s = utf8_tocstr(c->prompt_buffer);
tmp = utf8_tocstr(c->prompt_buffer);
char *utf8_tocstr(struct utf8_data *);