vu
c_undo_t *vu = &el->el_chared.c_undo;
vu->len = size;
vu->cursor = (int)(el->el_line.cursor - el->el_line.buffer);
(void)memcpy(vu->buf, el->el_line.buffer, size * sizeof(*vu->buf));
vector unsigned vu;
union vu a, b;
union vu a, b;
union vu a, b;
union vu u;
u_char vu: 4, /* vendor unique */