clipme(term, top, term->curs, 0, TRUE);
bottom.y = find_last_nonempty_line(term, screen); bottom.x = term->cols; clipme(term, top, bottom, 0, TRUE);
void term_copyall(Terminal *term){    pos top;    top.y = -sblines(term);    top.x = 0;    clipme(term, top, term->curs, 0, TRUE);}