328     int		mb_l = 1;		// multi-byte byte length  in win_line()  local
1626 			mb_l = utfc_ptr2len(p_extra);  in win_line()
1628 			if (mb_l > n_extra)  in win_line()
1629 			    mb_l = 1;  in win_line()
1630 			else if (mb_l > 1)  in win_line()
1640 			mb_l = MB_BYTE2LEN(c);  in win_line()
1641 			if (mb_l >= n_extra)  in win_line()
1642 			    mb_l = 1;  in win_line()
1643 			else if (mb_l > 1)  in win_line()
1646 		    if (mb_l == 0)  // at the NUL at end-of-line  in win_line()
1647 			mb_l = 1;  in win_line()
1660 			mb_l = 1;  in win_line()
1676 			n_extra -= mb_l - 1;  in win_line()
1677 			p_extra += mb_l - 1;  in win_line()
1703 		    mb_l = utfc_ptr2len(ptr);  in win_line()
1705 		    if (mb_l > 1)  in win_line()
1732 		    if ((mb_l == 1 && c >= 0x80)  in win_line()
1733 			    || (mb_l >= 1 && mb_c == 0)  in win_line()
1734 			    || (mb_l > 1 && (!vim_isprintc(mb_c))))  in win_line()
1758 		    else if (mb_l == 0)  // at the NUL at end-of-line  in win_line()
1759 			mb_l = 1;  in win_line()
1773 			    nc = utf_ptr2char(ptr + mb_l);  in win_line()
1778 			    pc = utfc_ptr2char(ptr + mb_l, pcc);  in win_line()
1792 		    mb_l = MB_BYTE2LEN(c);  in win_line()
1793 		    if (mb_l == 0)  // at the NUL at end-of-line  in win_line()
1794 			mb_l = 1;  in win_line()
1795 		    else if (mb_l > 1)  in win_line()
1806 				mb_l = 1;  in win_line()
1812 				mb_l = 2;  in win_line()
1844 		    mb_l = 1;  in win_line()
1854 		    ptr += mb_l - 1;  in win_line()
1859 		if (n_skip > 0 && mb_l > 1 && n_extra == 0)  in win_line()
1873 		    mb_l = 1;  in win_line()
1902 			    prev_ptr = ptr - mb_l;  in win_line()
1903 			    v -= mb_l - 1;  in win_line()
2026 			&& ((((c == 160 && mb_l == 1)  in win_line()
2028 				  && ((mb_c == 160 && mb_l == 2)  in win_line()
2029 				      || (mb_c == 0x202f && mb_l == 3))))  in win_line()
2032 				&& mb_l == 1  in win_line()