if (len > (size_t) (CurScreen(sp)->_maxx + 1 - win->_begx))
len = (size_t) (CurScreen(sp)->_maxx + 1 - win->_begx);
len *= sizeof(CurScreen(sp)->_line[0].text[0]);
if (len > (size_t) (CurScreen(sp)->_maxx + 1 - win->_begx))
len = (size_t) (CurScreen(sp)->_maxx + 1 - win->_begx);
len *= sizeof(CurScreen(sp)->_line[0].text[0]);