_cell_is_empty 720 uspace/lib/termui/src/history.c while (len > 1 && _cell_is_empty(b[len - 1]) && _cell_is_empty(b[len - 2])) _cell_is_empty 687 uspace/lib/termui/src/termui.c while (len > 0 && _cell_is_empty(old_termui.screen[real_row_offset + len - 1]))HelenOS homepage, sources at GitHub