84 static void scroll(VTermState *state, VTermRect rect, int downward, int rightward)  in scroll()  argument
86   if(!downward && !rightward)  in scroll()
90   if(downward > rows)  in scroll()
91     downward = rows;  in scroll()
92   else if(downward < -rows)  in scroll()
93     downward = -rows;  in scroll()
103     int height = rect.end_row - rect.start_row - abs(downward);  in scroll()
105     if(downward > 0)  in scroll()
107               state->lineinfo + rect.start_row + downward,  in scroll()
110       memmove(state->lineinfo + rect.start_row - downward,  in scroll()
116     if((*state->callbacks->scrollrect)(rect, downward, rightward, state->cbdata))  in scroll()
120     vterm_scroll_rect(rect, downward, rightward,  in scroll()