summaryrefslogtreecommitdiff
path: root/src/screen.c
blob: 628be9a9ed64faf28f71e23acf6be54b06939e3b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
/* vi:set ts=8 sts=4 sw=4:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */

/*
 * screen.c: code for displaying on the screen
 *
 * Output to the screen (console, terminal emulator or GUI window) is minimized
 * by remembering what is already on the screen, and only updating the parts
 * that changed.
 *
 * ScreenLines[off]  Contains a copy of the whole screen, as it is currently
 *		     displayed (excluding text written by external commands).
 * ScreenAttrs[off]  Contains the associated attributes.
 * LineOffset[row]   Contains the offset into ScreenLines*[] and ScreenAttrs[]
 *		     for each line.
 * LineWraps[row]    Flag for each line whether it wraps to the next line.
 *
 * For double-byte characters, two consecutive bytes in ScreenLines[] can form
 * one character which occupies two display cells.
 * For UTF-8 a multi-byte character is converted to Unicode and stored in
 * ScreenLinesUC[].  ScreenLines[] contains the first byte only.  For an ASCII
 * character without composing chars ScreenLinesUC[] will be 0.  When the
 * character occupies two display cells the next byte in ScreenLines[] is 0.
 * ScreenLinesC1[] and ScreenLinesC2[] contain up to two composing characters
 * (drawn on top of the first character).  They are 0 when not used.
 * ScreenLines2[] is only used for euc-jp to store the second byte if the
 * first byte is 0x8e (single-width character).
 *
 * The screen_*() functions write to the screen and handle updating
 * ScreenLines[].
 *
 * update_screen() is the function that updates all windows and status lines.
 * It is called form the main loop when must_redraw is non-zero.  It may be
 * called from other places when an immediated screen update is needed.
 *
 * The part of the buffer that is displayed in a window is set with:
 * - w_topline (first buffer line in window)
 * - w_topfill (filler line above the first line)
 * - w_leftcol (leftmost window cell in window),
 * - w_skipcol (skipped window cells of first line)
 *
 * Commands that only move the cursor around in a window, do not need to take
 * action to update the display.  The main loop will check if w_topline is
 * valid and update it (scroll the window) when needed.
 *
 * Commands that scroll a window change w_topline and must call
 * check_cursor() to move the cursor into the visible part of the window, and
 * call redraw_later(VALID) to have the window displayed by update_screen()
 * later.
 *
 * Commands that change text in the buffer must call changed_bytes() or
 * changed_lines() to mark the area that changed and will require updating
 * later.  The main loop will call update_screen(), which will update each
 * window that shows the changed buffer.  This assumes text above the change
 * can remain displayed as it is.  Text after the change may need updating for
 * scrolling, folding and syntax highlighting.
 *
 * Commands that change how a window is displayed (e.g., setting 'list') or
 * invalidate the contents of a window in another way (e.g., change fold
 * settings), must call redraw_later(NOT_VALID) to have the whole window
 * redisplayed by update_screen() later.
 *
 * Commands that change how a buffer is displayed (e.g., setting 'tabstop')
 * must call redraw_curbuf_later(NOT_VALID) to have all the windows for the
 * buffer redisplayed by update_screen() later.
 *
 * Commands that move the window position must call redraw_later(NOT_VALID).
 * TODO: should minimize redrawing by scrolling when possible.
 *
 * Commands that change everything (e.g., resizing the screen) must call
 * redraw_all_later(NOT_VALID) or redraw_all_later(CLEAR).
 *
 * Things that are handled indirectly:
 * - When messages scroll the screen up, msg_scrolled will be set and
 *   update_screen() called to redraw.
 */

#include "vim.h"

/*
 * The attributes that are actually active for writing to the screen.
 */
static int	screen_attr = 0;

/*
 * Positioning the cursor is reduced by remembering the last position.
 * Mostly used by windgoto() and screen_char().
 */
static int	screen_cur_row, screen_cur_col;	/* last known cursor position */

#ifdef FEAT_SEARCH_EXTRA
/*
 * Struct used for highlighting 'hlsearch' matches for the last use search
 * pattern or a ":match" item.
 * For 'hlsearch' there is one pattern for all windows.  For ":match" there is
 * a different pattern for each window.
 */
typedef struct
{
    regmmatch_T	rm;	/* points to the regexp program; contains last found
			   match (may continue in next line) */
    buf_T	*buf;	/* the buffer to search for a match */
    linenr_T	lnum;	/* the line to search for a match */
    int		attr;	/* attributes to be used for a match */
    int		attr_cur; /* attributes currently active in win_line() */
    linenr_T	first_lnum;	/* first lnum to search for multi-line pat */
    char_u	*startp; /* in win_line() points to char where HL starts */
    char_u	*endp;	 /* in win_line() points to char where HL ends */
} match_T;

static match_T search_hl;	/* used for 'hlsearch' highlight matching */
static match_T match_hl;	/* used for ":match" highlight matching */
#endif

#ifdef FEAT_FOLDING
static foldinfo_T win_foldinfo;	/* info for 'foldcolumn' */
#endif

/*
 * Buffer for one screen line (characters and attributes).
 */
static schar_T	*current_ScreenLine;

static void win_update __ARGS((win_T *wp));
static void win_draw_end __ARGS((win_T *wp, int c1, int c2, int row, int endrow, enum hlf_value hl));
#ifdef FEAT_FOLDING
static void fold_line __ARGS((win_T *wp, long fold_count, foldinfo_T *foldinfo, linenr_T lnum, int row));
static void fill_foldcolumn __ARGS((char_u *p, win_T *wp, int closed, linenr_T lnum));
static void copy_text_attr __ARGS((int off, char_u *buf, int len, int attr));
#endif
static int win_line __ARGS((win_T *, linenr_T, int, int));
static int char_needs_redraw __ARGS((int off_from, int off_to, int cols));
#ifdef FEAT_RIGHTLEFT
static void screen_line __ARGS((int row, int coloff, int endcol, int clear_width, int rlflag));
# define SCREEN_LINE(r, o, e, c, rl)    screen_line((r), (o), (e), (c), (rl))
#else
static void screen_line __ARGS((int row, int coloff, int endcol, int clear_width));
# define SCREEN_LINE(r, o, e, c, rl)    screen_line((r), (o), (e), (c))
#endif
#ifdef FEAT_RIGHTLEFT
static void rl_mirror __ARGS((char_u *str));
#endif
#ifdef FEAT_VERTSPLIT
static void draw_vsep_win __ARGS((win_T *wp, int row));
#endif
#ifdef FEAT_SEARCH_EXTRA
static void start_search_hl __ARGS((void));
static void end_search_hl __ARGS((void));
static void prepare_search_hl __ARGS((win_T *wp, linenr_T lnum));
static void next_search_hl __ARGS((win_T *win, match_T *shl, linenr_T lnum, colnr_T mincol));
#endif
static void screen_start_highlight __ARGS((int attr));
static void screen_char __ARGS((unsigned off, int row, int col));
#ifdef FEAT_MBYTE
static void screen_char_2 __ARGS((unsigned off, int row, int col));
#endif
static void screenclear2 __ARGS((void));
static void lineclear __ARGS((unsigned off, int width));
static void lineinvalid __ARGS((unsigned off, int width));
#ifdef FEAT_VERTSPLIT
static void linecopy __ARGS((int to, int from, win_T *wp));
static void redraw_block __ARGS((int row, int end, win_T *wp));
#endif
static int win_do_lines __ARGS((win_T *wp, int row, int line_count, int mayclear, int del));
static void win_rest_invalid __ARGS((win_T *wp));
static int screen_ins_lines __ARGS((int, int, int, int, win_T *wp));
static void msg_pos_mode __ARGS((void));
#if defined(FEAT_WINDOWS) || defined(FEAT_WILDMENU) || defined(FEAT_STL_OPT)
static int fillchar_status __ARGS((int *attr, int is_curwin));
#endif
#ifdef FEAT_VERTSPLIT
static int fillchar_vsep __ARGS((int *attr));
#endif
#ifdef FEAT_STL_OPT
static void win_redr_custom __ARGS((win_T *wp, int Ruler));
#endif
#ifdef FEAT_CMDL_INFO
static void win_redr_ruler __ARGS((win_T *wp, int always));
#endif

#if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT)
/* Ugly global: overrule attribute used by screen_char() */
static int screen_char_attr = 0;
#endif

/*
 * Redraw the current window later, with update_screen(type).
 * Set must_redraw only if not already set to a higher value.
 * e.g. if must_redraw is CLEAR, type NOT_VALID will do nothing.
 */
    void
redraw_later(type)
    int		type;
{
    redraw_win_later(curwin, type);
}

    void
redraw_win_later(wp, type)
    win_T	*wp;
    int		type;
{
    if (wp->w_redr_type < type)
    {
	wp->w_redr_type = type;
	if (type >= NOT_VALID)
	    wp->w_lines_valid = 0;
	if (must_redraw < type)	/* must_redraw is the maximum of all windows */
	    must_redraw = type;
    }
}

/*
 * Force a complete redraw later.  Also resets the highlighting.  To be used
 * after executing a shell command that messes up the screen.
 */
    void
redraw_later_clear()
{
    redraw_all_later(CLEAR);
    screen_attr = HL_BOLD | HL_UNDERLINE;
}

/*
 * Mark all windows to be redrawn later.
 */
    void
redraw_all_later(type)
    int		type;
{
    win_T	*wp;

    FOR_ALL_WINDOWS(wp)
    {
	redraw_win_later(wp, type);
    }
}

/*
 * Mark all windows that are editing the current buffer to be udpated later.
 */
    void
redraw_curbuf_later(type)
    int		type;
{
    redraw_buf_later(curbuf, type);
}

    void
redraw_buf_later(buf, type)
    buf_T	*buf;
    int		type;
{
    win_T	*wp;

    FOR_ALL_WINDOWS(wp)
    {
	if (wp->w_buffer == buf)
	    redraw_win_later(wp, type);
    }
}

/*
 * Changed something in the current window, at buffer line "lnum", that
 * requires that line and possibly other lines to be redrawn.
 * Used when entering/leaving Insert mode with the cursor on a folded line.
 * Used to remove the "$" from a change command.
 * Note that when also inserting/deleting lines w_redraw_top and w_redraw_bot
 * may become invalid and the whole window will have to be redrawn.
 */
/*ARGSUSED*/
    void
redrawWinline(lnum, invalid)
    linenr_T	lnum;
    int		invalid;	/* window line height is invalid now */
{
#ifdef FEAT_FOLDING
    int		i;
#endif

    if (curwin->w_redraw_top == 0 || curwin->w_redraw_top > lnum)
	curwin->w_redraw_top = lnum;
    if (curwin->w_redraw_bot == 0 || curwin->w_redraw_bot < lnum)
	curwin->w_redraw_bot = lnum;
    redraw_later(VALID);

#ifdef FEAT_FOLDING
    if (invalid)
    {
	/* A w_lines[] entry for this lnum has become invalid. */
	i = find_wl_entry(curwin, lnum);
	if (i >= 0)
	    curwin->w_lines[i].wl_valid = FALSE;
    }
#endif
}

/*
 * update all windows that are editing the current buffer
 */
    void
update_curbuf(type)
    int		type;
{
    redraw_curbuf_later(type);
    update_screen(type);
}

/*
 * update_screen()
 *
 * Based on the current value of curwin->w_topline, transfer a screenfull
 * of stuff from Filemem to ScreenLines[], and update curwin->w_botline.
 */
    void
update_screen(type)
    int		type;
{
    win_T	*wp;
    static int	did_intro = FALSE;
#if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
    int		did_one;
#endif

    if (!screen_valid(TRUE))
	return;

    if (must_redraw)
    {
	if (type < must_redraw)	    /* use maximal type */
	    type = must_redraw;
	must_redraw = 0;
    }

    /* Need to update w_lines[]. */
    if (curwin->w_lines_valid == 0 && type < NOT_VALID)
	type = NOT_VALID;

    if (!redrawing())
    {
	redraw_later(type);		/* remember type for next time */
	must_redraw = type;
	if (type > INVERTED_ALL)
	    curwin->w_lines_valid = 0;	/* don't use w_lines[].wl_size now */
	return;
    }

    updating_screen = TRUE;
#ifdef FEAT_SYN_HL
    ++display_tick;	    /* let syntax code know we're in a next round of
			     * display updating */
#endif

    /*
     * if the screen was scrolled up when displaying a message, scroll it down
     */
    if (msg_scrolled)
    {
	clear_cmdline = TRUE;
	if (msg_scrolled > Rows - 5)	    /* clearing is faster */
	    type = CLEAR;
	else if (type != CLEAR)
	{
	    check_for_delay(FALSE);
	    if (screen_ins_lines(0, 0, msg_scrolled, (int)Rows, NULL) == FAIL)
		type = CLEAR;
	    FOR_ALL_WINDOWS(wp)
	    {
		if (W_WINROW(wp) < msg_scrolled)
		{
		    if (W_WINROW(wp) + wp->w_height > msg_scrolled
			    && wp->w_redr_type < REDRAW_TOP
			    && wp->w_lines_valid > 0
			    && wp->w_topline == wp->w_lines[0].wl_lnum)
		    {
			wp->w_upd_rows = msg_scrolled - W_WINROW(wp);
			wp->w_redr_type = REDRAW_TOP;
		    }
		    else
		    {
			wp->w_redr_type = NOT_VALID;
#ifdef FEAT_WINDOWS
			if (W_WINROW(wp) + wp->w_height + W_STATUS_HEIGHT(wp)
				<= msg_scrolled)
			    wp->w_redr_status = TRUE;
#endif
		    }
		}
	    }
	    redraw_cmdline = TRUE;
	}
	msg_scrolled = 0;
	need_wait_return = FALSE;
    }

    /* reset cmdline_row now (may have been changed temporarily) */
    compute_cmdrow();

    /* Check for changed highlighting */
    if (need_highlight_changed)
	highlight_changed();

    if (type == CLEAR)		/* first clear screen */
    {
	screenclear();		/* will reset clear_cmdline */
	type = NOT_VALID;
    }

    if (clear_cmdline)		/* going to clear cmdline (done below) */
	check_for_delay(FALSE);

#ifdef FEAT_LINEBREAK
    /* Force redraw when width of 'number' column changes. */
    if (curwin->w_redr_type < NOT_VALID
				 && curwin->w_nrwidth != number_width(curwin))
	curwin->w_redr_type = NOT_VALID;
#endif

    /*
     * Only start redrawing if there is really something to do.
     */
    if (type == INVERTED)
	update_curswant();
    if (curwin->w_redr_type < type
	    && !((type == VALID
		    && curwin->w_lines[0].wl_valid
#ifdef FEAT_DIFF
		    && curwin->w_topfill == curwin->w_old_topfill
		    && curwin->w_botfill == curwin->w_old_botfill
#endif
		    && curwin->w_topline == curwin->w_lines[0].wl_lnum)
#ifdef FEAT_VISUAL
		|| (type == INVERTED
		    && curwin->w_old_cursor_lnum == curwin->w_cursor.lnum
		    && curwin->w_old_visual_mode == VIsual_mode
		    && (curwin->w_valid & VALID_VIRTCOL)
		    && curwin->w_old_curswant == curwin->w_curswant)
#endif
		))
	curwin->w_redr_type = type;

#ifdef FEAT_SYN_HL
    /*
     * Correct stored syntax highlighting info for changes in each displayed
     * buffer.  Each buffer must only be done once.
     */
    FOR_ALL_WINDOWS(wp)
    {
	if (wp->w_buffer->b_mod_set)
	{
# ifdef FEAT_WINDOWS
	    win_T	*wwp;

	    /* Check if we already did this buffer. */
	    for (wwp = firstwin; wwp != wp; wwp = wwp->w_next)
		if (wwp->w_buffer == wp->w_buffer)
		    break;
# endif
	    if (
# ifdef FEAT_WINDOWS
		    wwp == wp &&
# endif
		    syntax_present(wp->w_buffer))
		syn_stack_apply_changes(wp->w_buffer);
	}
    }
#endif

    /*
     * Go from top to bottom through the windows, redrawing the ones that need
     * it.
     */
#if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
    did_one = FALSE;
#endif
#ifdef FEAT_SEARCH_EXTRA
    search_hl.rm.regprog = NULL;
#endif
    FOR_ALL_WINDOWS(wp)
    {
	if (wp->w_redr_type != 0)
	{
	    cursor_off();
#if defined(FEAT_SEARCH_EXTRA) || defined(FEAT_CLIPBOARD)
	    if (!did_one)
	    {
		did_one = TRUE;
# ifdef FEAT_SEARCH_EXTRA
		start_search_hl();
# endif
# ifdef FEAT_CLIPBOARD
		/* When Visual area changed, may have to update selection. */
		if (clip_star.available && clip_isautosel())
		    clip_update_selection();
# endif
#ifdef FEAT_GUI
		/* Remove the cursor before starting to do anything, because
		 * scrolling may make it difficult to redraw the text under
		 * it. */
		if (gui.in_use)
		    gui_undraw_cursor();
#endif
	    }
#endif
	    win_update(wp);
	}

#ifdef FEAT_WINDOWS
	/* redraw status line after the window to minimize cursor movement */
	if (wp->w_redr_status)
	{
	    cursor_off();
	    win_redr_status(wp);
	}
#endif
    }
#if defined(FEAT_SEARCH_EXTRA)
    end_search_hl();
#endif

#ifdef FEAT_WINDOWS
    /* Reset b_mod_set flags.  Going through all windows is probably faster
     * than going through all buffers (there could be many buffers). */
    for (wp = firstwin; wp != NULL; wp = wp->w_next)
	wp->w_buffer->b_mod_set = FALSE;
#else
	curbuf->b_mod_set = FALSE;
#endif

    updating_screen = FALSE;
#ifdef FEAT_GUI
    gui_may_resize_shell();
#endif

    /* Clear or redraw the command line.  Done last, because scrolling may
     * mess up the command line. */
    if (clear_cmdline || redraw_cmdline)
	showmode();

    /* May put up an introductory message when not editing a file */
    if (!did_intro && bufempty()
	    && curbuf->b_fname == NULL
#ifdef FEAT_WINDOWS
	    && firstwin->w_next == NULL
#endif
	    && vim_strchr(p_shm, SHM_INTRO) == NULL)
	intro_message(FALSE);
    did_intro = TRUE;

#ifdef FEAT_GUI
    /* Redraw the cursor and update the scrollbars when all screen updating is
     * done. */
    if (gui.in_use)
    {
	out_flush();	/* required before updating the cursor */
	if (did_one)
	    gui_update_cursor(FALSE, FALSE);
	gui_update_scrollbars(FALSE);
    }
#endif
}

#if defined(FEAT_SIGNS) || defined(FEAT_GUI)
static void update_prepare __ARGS((void));
static void update_finish __ARGS((void));

/*
 * Prepare for updating one or more windows.
 */
    static void
update_prepare()
{
    cursor_off();
    updating_screen = TRUE;
#ifdef FEAT_GUI
    /* Remove the cursor before starting to do anything, because scrolling may
     * make it difficult to redraw the text under it. */
    if (gui.in_use)
	gui_undraw_cursor();
#endif
#ifdef FEAT_SEARCH_EXTRA
    start_search_hl();
#endif
}

/*
 * Finish updating one or more windows.
 */
    static void
update_finish()
{
    if (redraw_cmdline)
	showmode();

# ifdef FEAT_SEARCH_EXTRA
    end_search_hl();
# endif

    updating_screen = FALSE;

# ifdef FEAT_GUI
    gui_may_resize_shell();

    /* Redraw the cursor and update the scrollbars when all screen updating is
     * done. */
    if (gui.in_use)
    {
	out_flush();	/* required before updating the cursor */
	gui_update_cursor(FALSE, FALSE);
	gui_update_scrollbars(FALSE);
    }
# endif
}
#endif

#if defined(FEAT_SIGNS) || defined(PROTO)
    void
update_debug_sign(buf, lnum)
    buf_T	*buf;
    linenr_T	lnum;
{
    win_T	*wp;
    int		doit = FALSE;

# ifdef FEAT_FOLDING
    win_foldinfo.fi_level = 0;
# endif

    /* update/delete a specific mark */
    FOR_ALL_WINDOWS(wp)
    {
	if (buf != NULL && lnum > 0)
	{
	    if (wp->w_buffer == buf && lnum >= wp->w_topline
						      && lnum < wp->w_botline)
	    {
		if (wp->w_redraw_top == 0 || wp->w_redraw_top > lnum)
		    wp->w_redraw_top = lnum;
		if (wp->w_redraw_bot == 0 || wp->w_redraw_bot < lnum)
		    wp->w_redraw_bot = lnum;
		redraw_win_later(wp, VALID);
	    }
	}
	else
	    redraw_win_later(wp, VALID);
	if (wp->w_redr_type != 0)
	    doit = TRUE;
    }

    if (!doit)
	return;

    /* update all windows that need updating */
    update_prepare();

# ifdef FEAT_WINDOWS
    for (wp = firstwin; wp; wp = wp->w_next)
    {
	if (wp->w_redr_type != 0)
	    win_update(wp);
	if (wp->w_redr_status)
	    win_redr_status(wp);
    }
# else
    if (curwin->w_redr_type != 0)
	win_update(curwin);
# endif

    update_finish();
}
#endif


#if defined(FEAT_GUI) || defined(PROTO)
/*
 * Update a single window, its status line and maybe the command line msg.
 * Used for the GUI scrollbar.
 */
    void
updateWindow(wp)
    win_T	*wp;
{
    update_prepare();

#ifdef FEAT_CLIPBOARD
    /* When Visual area changed, may have to update selection. */
    if (clip_star.available && clip_isautosel())
	clip_update_selection();
#endif
    win_update(wp);
#ifdef FEAT_WINDOWS
    if (wp->w_redr_status
# ifdef FEAT_CMDL_INFO
	    || p_ru
# endif
# ifdef FEAT_STL_OPT
	    || *p_stl
# endif
	    )
	win_redr_status(wp);
#endif

    update_finish();
}
#endif

/*
 * Update a single window.
 *
 * This may cause the windows below it also to be redrawn (when clearing the
 * screen or scrolling lines).
 *
 * How the window is redrawn depends on wp->w_redr_type.  Each type also
 * implies the one below it.
 * NOT_VALID	redraw the whole window
 * REDRAW_TOP	redraw the top w_upd_rows window lines, otherwise like VALID
 * INVERTED	redraw the changed part of the Visual area
 * INVERTED_ALL	redraw the whole Visual area
 * VALID	1. scroll up/down to adjust for a changed w_topline
 *		2. update lines at the top when scrolled down
 *		3. redraw changed text:
 *		   - if wp->w_buffer->b_mod_set set, udpate lines between
 *		     b_mod_top and b_mod_bot.
 *		   - if wp->w_redraw_top non-zero, redraw lines between
 *		     wp->w_redraw_top and wp->w_redr_bot.
 *		   - continue redrawing when syntax status is invalid.
 *		4. if scrolled up, update lines at the bottom.
 * This results in three areas that may need updating:
 * top:	from first row to top_end (when scrolled down)
 * mid: from mid_start to mid_end (update inversion or changed text)
 * bot: from bot_start to last row (when scrolled up)
 */
    static void
win_update(wp)
    win_T	*wp;
{
    buf_T	*buf = wp->w_buffer;
    int		type;
    int		top_end = 0;	/* Below last row of the top area that needs
				   updating.  0 when no top area updating. */
    int		mid_start = 999;/* first row of the mid area that needs
				   updating.  999 when no mid area updating. */
    int		mid_end = 0;	/* Below last row of the mid area that needs
				   updating.  0 when no mid area updating. */
    int		bot_start = 999;/* first row of the bot area that needs
				   updating.  999 when no bot area updating */
#ifdef FEAT_VISUAL
    int		scrolled_down = FALSE;	/* TRUE when scrolled down when
					   w_topline got smaller a bit */
#endif
#ifdef FEAT_SEARCH_EXTRA
    int		top_to_mod = FALSE;    /* redraw above mod_top */
#endif

    int		row;		/* current window row to display */
    linenr_T	lnum;		/* current buffer lnum to display */
    int		idx;		/* current index in w_lines[] */
    int		srow;		/* starting row of the current line */

    int		eof = FALSE;	/* if TRUE, we hit the end of the file */
    int		didline = FALSE; /* if TRUE, we finished the last line */
    int		i;
    long	j;
    static int	recursive = FALSE;	/* being called recursively */
    int		old_botline = wp->w_botline;
#ifdef FEAT_FOLDING
    long	fold_count;
#endif
#ifdef FEAT_SYN_HL
    /* remember what happened to the previous line, to know if
     * check_visual_highlight() can be used */
#define DID_NONE 1	/* didn't update a line */
#define DID_LINE 2	/* updated a normal line */
#define DID_FOLD 3	/* updated a folded line */
    int		did_update = DID_NONE;
    linenr_T	syntax_last_parsed = 0;		/* last parsed text line */
#endif
    linenr_T	mod_top = 0;
    linenr_T	mod_bot = 0;
#if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
    int		save_got_int;
#endif

    type = wp->w_redr_type;

    if (type == NOT_VALID)
    {
#ifdef FEAT_WINDOWS
	wp->w_redr_status = TRUE;
#endif
	wp->w_lines_valid = 0;
    }

    /* Window is zero-height: nothing to draw. */
    if (wp->w_height == 0)
    {
	wp->w_redr_type = 0;
	return;
    }

#ifdef FEAT_VERTSPLIT
    /* Window is zero-width: Only need to draw the separator. */
    if (wp->w_width == 0)
    {
	/* draw the vertical separator right of this window */
	draw_vsep_win(wp, 0);
	wp->w_redr_type = 0;
	return;
    }
#endif

#ifdef FEAT_SEARCH_EXTRA
    /* Setup for ":match" highlighting.  Disable any previous match */
    match_hl.rm = wp->w_match;
    if (wp->w_match_id == 0)
	match_hl.attr = 0;
    else
	match_hl.attr = syn_id2attr(wp->w_match_id);
    match_hl.buf = buf;
    match_hl.lnum = 0;
    search_hl.buf = buf;
    search_hl.lnum = 0;
    search_hl.first_lnum = 0;
#endif

#ifdef FEAT_LINEBREAK
    /* Force redraw when width of 'number' column changes. */
    i = number_width(curwin);
    if (curwin->w_nrwidth != i)
    {
	type = NOT_VALID;
	curwin->w_nrwidth = i;
    }
    else
#endif

    if (buf->b_mod_set && buf->b_mod_xlines != 0 && wp->w_redraw_top != 0)
    {
	/*
	 * When there are both inserted/deleted lines and specific lines to be
	 * redrawn, w_redraw_top and w_redraw_bot may be invalid, just redraw
	 * everything (only happens when redrawing is off for while).
	 */
	type = NOT_VALID;
    }
    else
    {
	/*
	 * Set mod_top to the first line that needs displaying because of
	 * changes.  Set mod_bot to the first line after the changes.
	 */
	mod_top = wp->w_redraw_top;
	if (wp->w_redraw_bot != 0)
	    mod_bot = wp->w_redraw_bot + 1;
	else
	    mod_bot = 0;
	wp->w_redraw_top = 0;	/* reset for next time */
	wp->w_redraw_bot = 0;
	if (buf->b_mod_set)
	{
	    if (mod_top == 0 || mod_top > buf->b_mod_top)
	    {
		mod_top = buf->b_mod_top;
#ifdef FEAT_SYN_HL
		/* Need to redraw lines above the change that may be included
		 * in a pattern match. */
		if (syntax_present(buf))
		{
		    mod_top -= buf->b_syn_sync_linebreaks;
		    if (mod_top < 1)
			mod_top = 1;
		}
#endif
	    }
	    if (mod_bot == 0 || mod_bot < buf->b_mod_bot)
		mod_bot = buf->b_mod_bot;

#ifdef FEAT_SEARCH_EXTRA
	    /* When 'hlsearch' is on and using a multi-line search pattern, a
	     * change in one line may make the Search highlighting in a
	     * previous line invalid.  Simple solution: redraw all visible
	     * lines above the change.
	     * Same for a ":match" pattern.
	     */
	    if ((search_hl.rm.regprog != NULL
			&& re_multiline(search_hl.rm.regprog))
		    || (match_hl.rm.regprog != NULL
			&& re_multiline(match_hl.rm.regprog)))
		top_to_mod = TRUE;
#endif
	}
#ifdef FEAT_FOLDING
	if (mod_top != 0 && hasAnyFolding(wp))
	{
	    linenr_T	lnumt, lnumb;

	    /*
	     * A change in a line can cause lines above it to become folded or
	     * unfolded.  Find the top most buffer line that may be affected.
	     * If the line was previously folded and displayed, get the first
	     * line of that fold.  If the line is folded now, get the first
	     * folded line.  Use the minimum of these two.
	     */

	    /* Find last valid w_lines[] entry above mod_top.  Set lnumt to
	     * the line below it.  If there is no valid entry, use w_topline.
	     * Find the first valid w_lines[] entry below mod_bot.  Set lnumb
	     * to this line.  If there is no valid entry, use MAXLNUM. */
	    lnumt = wp->w_topline;
	    lnumb = MAXLNUM;
	    for (i = 0; i < wp->w_lines_valid; ++i)
		if (wp->w_lines[i].wl_valid)
		{
		    if (wp->w_lines[i].wl_lastlnum < mod_top)
			lnumt = wp->w_lines[i].wl_lastlnum + 1;
		    if (lnumb == MAXLNUM && wp->w_lines[i].wl_lnum >= mod_bot)
		    {
			lnumb = wp->w_lines[i].wl_lnum;
			/* When there is a fold column it might need updating
			 * in the next line ("J" just above an open fold). */
			if (wp->w_p_fdc > 0)
			    ++lnumb;
		    }
		}

	    (void)hasFoldingWin(wp, mod_top, &mod_top, NULL, TRUE, NULL);
	    if (mod_top > lnumt)
		mod_top = lnumt;

	    /* Now do the same for the bottom line (one above mod_bot). */
	    --mod_bot;
	    (void)hasFoldingWin(wp, mod_bot, NULL, &mod_bot, TRUE, NULL);
	    ++mod_bot;
	    if (mod_bot < lnumb)
		mod_bot = lnumb;
	}
#endif

	/* When a change starts above w_topline and the end is below
	 * w_topline, start redrawing at w_topline.
	 * If the end of the change is above w_topline: do like no changes was
	 * maded, but redraw the first line to find changes in syntax. */
	if (mod_top != 0 && mod_top < wp->w_topline)
	{
	    if (mod_bot > wp->w_topline)
		mod_top = wp->w_topline;
#ifdef FEAT_SYN_HL
	    else if (syntax_present(buf))
		top_end = 1;
#endif
	}
    }

    /*
     * When only displaying the lines at the top, set top_end.  Used when
     * window has scrolled down for msg_scrolled.
     */
    if (type == REDRAW_TOP)
    {
	j = 0;
	for (i = 0; i < wp->w_lines_valid; ++i)
	{
	    j += wp->w_lines[i].wl_size;
	    if (j >= wp->w_upd_rows)
	    {
		top_end = j;
		break;
	    }
	}
	if (top_end == 0)
	    /* not found (cannot happen?): redraw everything */
	    type = NOT_VALID;
	else
	    /* top area defined, the rest is VALID */
	    type = VALID;
    }

    /*
     * If there are no changes on the screen that require a complete redraw,
     * handle three cases:
     * 1: we are off the top of the screen by a few lines: scroll down
     * 2: wp->w_topline is below wp->w_lines[0].wl_lnum: may scroll up
     * 3: wp->w_topline is wp->w_lines[0].wl_lnum: find first entry in
     *    w_lines[] that needs updating.
     */
    if ((type == VALID || type == INVERTED || type == INVERTED_ALL)
#ifdef FEAT_DIFF
	    && !wp->w_botfill && !wp->w_old_botfill
#endif
	    )
    {
	if (mod_top != 0 && wp->w_topline == mod_top)
	{
	    /*
	     * w_topline is the first changed line, the scrolling will be done
	     * further down.
	     */
	}
	else if (wp->w_lines[0].wl_valid
		&& (wp->w_topline < wp->w_lines[0].wl_lnum
#ifdef FEAT_DIFF
		    || (wp->w_topline == wp->w_lines[0].wl_lnum
			&& wp->w_topfill > wp->w_old_topfill)
#endif
		   ))
	{
	    /*
	     * New topline is above old topline: May scroll down.
	     */
#ifdef FEAT_FOLDING
	    if (hasAnyFolding(wp))
	    {
		linenr_T ln;

		/* count the number of lines we are off, counting a sequence
		 * of folded lines as one */
		j = 0;
		for (ln = wp->w_topline; ln < wp->w_lines[0].wl_lnum; ++ln)
		{
		    ++j;
		    if (j >= wp->w_height - 2)
			break;
		    (void)hasFoldingWin(wp, ln, NULL, &ln, TRUE, NULL);
		}
	    }
	    else
#endif
		j = wp->w_lines[0].wl_lnum - wp->w_topline;
	    if (j < wp->w_height - 2)		/* not too far off */
	    {
		i = plines_m_win(wp, wp->w_topline, wp->w_lines[0].wl_lnum - 1);
#ifdef FEAT_DIFF
		/* insert extra lines for previously invisible filler lines */
		if (wp->w_lines[0].wl_lnum != wp->w_topline)
		    i += diff_check_fill(wp, wp->w_lines[0].wl_lnum)
							  - wp->w_old_topfill;
#endif
		if (i < wp->w_height - 2)	/* less than a screen off */
		{
		    /*
		     * Try to insert the correct number of lines.
		     * If not the last window, delete the lines at the bottom.
		     * win_ins_lines may fail when the terminal can't do it.
		     */
		    if (i > 0)
			check_for_delay(FALSE);
		    if (win_ins_lines(wp, 0, i, FALSE, wp == firstwin) == OK)
		    {
			if (wp->w_lines_valid != 0)
			{
			    /* Need to update rows that are new, stop at the
			     * first one that scrolled down. */
			    top_end = i;
#ifdef FEAT_VISUAL
			    scrolled_down = TRUE;
#endif

			    /* Move the entries that were scrolled, disable
			     * the entries for the lines to be redrawn. */
			    if ((wp->w_lines_valid += j) > wp->w_height)
				wp->w_lines_valid = wp->w_height;
			    for (idx = wp->w_lines_valid; idx - j >= 0; idx--)
				wp->w_lines[idx] = wp->w_lines[idx - j];
			    while (idx >= 0)
				wp->w_lines[idx--].wl_valid = FALSE;
			}
		    }
		    else
			mid_start = 0;		/* redraw all lines */
		}
		else
		    mid_start = 0;		/* redraw all lines */
	    }
	    else
		mid_start = 0;		/* redraw all lines */
	}
	else
	{
	    /*
	     * New topline is at or below old topline: May scroll up.
	     * When topline didn't change, find first entry in w_lines[] that
	     * needs updating.
	     */

	    /* try to find wp->w_topline in wp->w_lines[].wl_lnum */
	    j = -1;
	    row = 0;
	    for (i = 0; i < wp->w_lines_valid; i++)
	    {
		if (wp->w_lines[i].wl_valid
			&& wp->w_lines[i].wl_lnum == wp->w_topline)
		{
		    j = i;
		    break;
		}
		row += wp->w_lines[i].wl_size;
	    }
	    if (j == -1)
	    {
		/* if wp->w_topline is not in wp->w_lines[].wl_lnum redraw all
		 * lines */
		mid_start = 0;
	    }
	    else
	    {
		/*
		 * Try to delete the correct number of lines.
		 * wp->w_topline is at wp->w_lines[i].wl_lnum.
		 */
#ifdef FEAT_DIFF
		/* If the topline didn't change, delete old filler lines,
		 * otherwise delete filler lines of the new topline... */
		if (wp->w_lines[0].wl_lnum == wp->w_topline)
		    row += wp->w_old_topfill;
		else
		    row += diff_check_fill(wp, wp->w_topline);
		/* ... but don't delete new filler lines. */
		row -= wp->w_topfill;
#endif
		if (row > 0)
		{
		    check_for_delay(FALSE);
		    if (win_del_lines(wp, 0, row, FALSE, wp == firstwin) == OK)
			bot_start = wp->w_height - row;
		    else
			mid_start = 0;		/* redraw all lines */
		}
		if ((row == 0 || bot_start < 999) && wp->w_lines_valid != 0)
		{
		    /*
		     * Skip the lines (below the deleted lines) that are still
		     * valid and don't need redrawing.	Copy their info
		     * upwards, to compensate for the deleted lines.  Set
		     * bot_start to the first row that needs redrawing.
		     */
		    bot_start = 0;
		    idx = 0;
		    for (;;)
		    {
			wp->w_lines[idx] = wp->w_lines[j];
			/* stop at line that didn't fit, unless it is still
			 * valid (no lines deleted) */
			if (row > 0 && bot_start + row
				 + (int)wp->w_lines[j].wl_size > wp->w_height)
			{
			    wp->w_lines_valid = idx + 1;
			    break;
			}
			bot_start += wp->w_lines[idx++].wl_size;

			/* stop at the last valid entry in w_lines[].wl_size */
			if (++j >= wp->w_lines_valid)
			{
			    wp->w_lines_valid = idx;
			    break;
			}
		    }
#ifdef FEAT_DIFF
		    /* Correct the first entry for filler lines at the top
		     * when it won't get updated below. */
		    if (wp->w_p_diff && bot_start > 0)
			wp->w_lines[0].wl_size =
			    plines_win_nofill(wp, wp->w_topline, TRUE)
							      + wp->w_topfill;
#endif
		}
	    }
	}

	/* When starting redraw in the first line, redraw all lines.  When
	 * there is only one window it's probably faster to clear the screen
	 * first. */
	if (mid_start == 0)
	{
	    mid_end = wp->w_height;
	    if (lastwin == firstwin)
		screenclear();
	}
    }
    else
    {
	/* Not VALID or INVERTED: redraw all lines. */
	mid_start = 0;
	mid_end = wp->w_height;
    }

#ifdef FEAT_VISUAL
    /* check if we are updating or removing the inverted part */
    if ((VIsual_active && buf == curwin->w_buffer)
	    || (wp->w_old_cursor_lnum != 0 && type != NOT_VALID))
    {
	linenr_T    from, to;

	if (VIsual_active)
	{
	    if (VIsual_active
		    && (VIsual_mode != wp->w_old_visual_mode
			|| type == INVERTED_ALL))
	    {
		/*
		 * If the type of Visual selection changed, redraw the whole
		 * selection.  Also when the ownership of the X selection is
		 * gained or lost.
		 */
		if (curwin->w_cursor.lnum < VIsual.lnum)
		{
		    from = curwin->w_cursor.lnum;
		    to = VIsual.lnum;
		}
		else
		{
		    from = VIsual.lnum;
		    to = curwin->w_cursor.lnum;
		}
		/* redraw more when the cursor moved as well */
		if (wp->w_old_cursor_lnum < from)
		    from = wp->w_old_cursor_lnum;
		if (wp->w_old_cursor_lnum > to)
		    to = wp->w_old_cursor_lnum;
		if (wp->w_old_visual_lnum < from)
		    from = wp->w_old_visual_lnum;
		if (wp->w_old_visual_lnum > to)
		    to = wp->w_old_visual_lnum;
	    }
	    else
	    {
		/*
		 * Find the line numbers that need to be updated: The lines
		 * between the old cursor position and the current cursor
		 * position.  Also check if the Visual position changed.
		 */
		if (curwin->w_cursor.lnum < wp->w_old_cursor_lnum)
		{
		    from = curwin->w_cursor.lnum;
		    to = wp->w_old_cursor_lnum;
		}
		else
		{
		    from = wp->w_old_cursor_lnum;
		    to = curwin->w_cursor.lnum;
		    if (from == 0)	/* Visual mode just started */
			from = to;
		}

		if (VIsual.lnum != wp->w_old_visual_lnum)
		{
		    if (wp->w_old_visual_lnum < from
						&& wp->w_old_visual_lnum != 0)
			from = wp->w_old_visual_lnum;
		    if (wp->w_old_visual_lnum > to)
			to = wp->w_old_visual_lnum;
		    if (VIsual.lnum < from)
			from = VIsual.lnum;
		    if (VIsual.lnum > to)
			to = VIsual.lnum;
		}
	    }

	    /*
	     * If in block mode and changed column or curwin->w_curswant:
	     * update all lines.
	     * First compute the actual start and end column.
	     */
	    if (VIsual_mode == Ctrl_V)
	    {
		colnr_T	fromc, toc;

		getvcols(wp, &VIsual, &curwin->w_cursor, &fromc, &toc);
		++toc;
		if (curwin->w_curswant == MAXCOL)
		    toc = MAXCOL;

		if (fromc != wp->w_old_cursor_fcol
			|| toc != wp->w_old_cursor_lcol)
		{
		    if (from > VIsual.lnum)
			from = VIsual.lnum;
		    if (to < VIsual.lnum)
			to = VIsual.lnum;
		}
		wp->w_old_cursor_fcol = fromc;
		wp->w_old_cursor_lcol = toc;
	    }
	}
	else
	{
	    /* Use the line numbers of the old Visual area. */
	    if (wp->w_old_cursor_lnum < wp->w_old_visual_lnum)
	    {
		from = wp->w_old_cursor_lnum;
		to = wp->w_old_visual_lnum;
	    }
	    else
	    {
		from = wp->w_old_visual_lnum;
		to = wp->w_old_cursor_lnum;
	    }
	}

	/*
	 * There is no need to update lines above the top of the window.
	 */
	if (from < wp->w_topline)
	    from = wp->w_topline;

	/*
	 * If we know the value of w_botline, use it to restrict the update to
	 * the lines that are visible in the window.
	 */
	if (wp->w_valid & VALID_BOTLINE)
	{
	    if (from >= wp->w_botline)
		from = wp->w_botline - 1;
	    if (to >= wp->w_botline)
		to = wp->w_botline - 1;
	}

	/*
	 * Find the minimal part to be updated.
	 * Watch out for scrolling that made entries in w_lines[] invalid.
	 * E.g., CTRL-U makes the first half of w_lines[] invalid and sets
	 * top_end; need to redraw from top_end to the "to" line.
	 * A middle mouse click with a Visual selection may change the text
	 * above the Visual area and reset wl_valid, do count these for
	 * mid_end (in srow).
	 */
	if (mid_start > 0)
	{
	    lnum = wp->w_topline;
	    idx = 0;
	    srow = 0;
	    if (scrolled_down)
		mid_start = top_end;
	    else
		mid_start = 0;
	    while (lnum < from && idx < wp->w_lines_valid)	/* find start */
	    {
		if (wp->w_lines[idx].wl_valid)
		    mid_start += wp->w_lines[idx].wl_size;
		else if (!scrolled_down)
		    srow += wp->w_lines[idx].wl_size;
		++idx;
# ifdef FEAT_FOLDING
		if (idx < wp->w_lines_valid && wp->w_lines[idx].wl_valid)
		    lnum = wp->w_lines[idx].wl_lnum;
		else
# endif
		    ++lnum;
	    }
	    srow += mid_start;
	    mid_end = wp->w_height;
	    for ( ; idx < wp->w_lines_valid; ++idx)		/* find end */
	    {
		if (wp->w_lines[idx].wl_valid
			&& wp->w_lines[idx].wl_lnum >= to + 1)
		{
		    /* Only update until first row of this line */
		    mid_end = srow;
		    break;
		}
		srow += wp->w_lines[idx].wl_size;
	    }
	}
    }

    if (VIsual_active && buf == curwin->w_buffer)
    {
	wp->w_old_visual_mode = VIsual_mode;
	wp->w_old_cursor_lnum = curwin->w_cursor.lnum;
	wp->w_old_visual_lnum = VIsual.lnum;
	wp->w_old_curswant = curwin->w_curswant;
    }
    else
    {
	wp->w_old_visual_mode = 0;
	wp->w_old_cursor_lnum = 0;
	wp->w_old_visual_lnum = 0;
    }
#endif /* FEAT_VISUAL */

#if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
    /* reset got_int, otherwise regexp won't work */
    save_got_int = got_int;
    got_int = 0;
#endif
#ifdef FEAT_FOLDING
    win_foldinfo.fi_level = 0;
#endif

    /*
     * Update all the window rows.
     */
    idx = 0;		/* first entry in w_lines[].wl_size */
    row = 0;
    srow = 0;
    lnum = wp->w_topline;	/* first line shown in window */
    for (;;)
    {
	/* stop updating when reached the end of the window (check for _past_
	 * the end of the window is at the end of the loop) */
	if (row == wp->w_height)
	{
	    didline = TRUE;
	    break;
	}

	/* stop updating when hit the end of the file */
	if (lnum > buf->b_ml.ml_line_count)
	{
	    eof = TRUE;
	    break;
	}

	/* Remember the starting row of the line that is going to be dealt
	 * with.  It is used further down when the line doesn't fit. */
	srow = row;

	/*
	 * Update a line when it is in an area that needs updating, when it
	 * has changes or w_lines[idx] is invalid.
	 * bot_start may be halfway a wrapped line after using
	 * win_del_lines(), check if the current line includes it.
	 * When syntax folding is being used, the saved syntax states will
	 * already have been updated, we can't see where the syntax state is
	 * the same again, just update until the end of the window.
	 */
	if (row < top_end
		|| (row >= mid_start && row < mid_end)
#ifdef FEAT_SEARCH_EXTRA
		|| top_to_mod
#endif
		|| idx >= wp->w_lines_valid
		|| (row + wp->w_lines[idx].wl_size > bot_start)
		|| (mod_top != 0
		    && (lnum == mod_top
			|| (lnum >= mod_top
			    && (lnum < mod_bot
#ifdef FEAT_SYN_HL
				|| did_update == DID_FOLD
				|| (did_update == DID_LINE
				    && syntax_present(buf)
				    && (
# ifdef FEAT_FOLDING
					(foldmethodIsSyntax(wp)
						      && hasAnyFolding(wp)) ||
# endif
					syntax_check_changed(lnum)))
#endif
				)))))
	{
#ifdef FEAT_SEARCH_EXTRA
	    if (lnum == mod_top)
		top_to_mod = FALSE;
#endif

	    /*
	     * When at start of changed lines: May scroll following lines
	     * up or down to minimize redrawing.
	     * Don't do this when the change continues until the end.
	     * Don't scroll when dollar_vcol is non-zero, keep the "$".
	     */
	    if (lnum == mod_top
		    && mod_bot != MAXLNUM
		    && !(dollar_vcol != 0 && mod_bot == mod_top + 1))
	    {
		int		old_rows = 0;
		int		new_rows = 0;
		int		xtra_rows;
		linenr_T	l;

		/* Count the old number of window rows, using w_lines[], which
		 * should still contain the sizes for the lines as they are
		 * currently displayed. */
		for (i = idx; i < wp->w_lines_valid; ++i)
		{
		    /* Only valid lines have a meaningful wl_lnum.  Invalid
		     * lines are part of the changed area. */
		    if (wp->w_lines[i].wl_valid
			    && wp->w_lines[i].wl_lnum == mod_bot)
			break;
		    old_rows += wp->w_lines[i].wl_size;
#ifdef FEAT_FOLDING
		    if (wp->w_lines[i].wl_valid
			    && wp->w_lines[i].wl_lastlnum + 1 == mod_bot)
		    {
			/* Must have found the last valid entry above mod_bot.
			 * Add following invalid entries. */
			++i;
			while (i < wp->w_lines_valid
						  && !wp->w_lines[i].wl_valid)
			    old_rows += wp->w_lines[i++].wl_size;
			break;
		    }
#endif
		}

		if (i >= wp->w_lines_valid)
		{
		    /* We can't find a valid line below the changed lines,
		     * need to redraw until the end of the window.
		     * Inserting/deleting lines has no use. */
		    bot_start = 0;
		}
		else
		{
		    /* Able to count old number of rows: Count new window
		     * rows, and may insert/delete lines */
		    j = idx;
		    for (l = lnum; l < mod_bot; ++l)
		    {
#ifdef FEAT_FOLDING
			if (hasFoldingWin(wp, l, NULL, &l, TRUE, NULL))
			    ++new_rows;
			else
#endif
#ifdef FEAT_DIFF
			    if (l == wp->w_topline)
			    new_rows += plines_win_nofill(wp, l, TRUE)
							      + wp->w_topfill;
			else
#endif
			    new_rows += plines_win(wp, l, TRUE);
			++j;
			if (new_rows > wp->w_height - row - 2)
			{
			    /* it's getting too much, must redraw the rest */
			    new_rows = 9999;
			    break;
			}
		    }
		    xtra_rows = new_rows - old_rows;
		    if (xtra_rows < 0)
		    {
			/* May scroll text up.  If there is not enough
			 * remaining text or scrolling fails, must redraw the
			 * rest.  If scrolling works, must redraw the text
			 * below the scrolled text. */
			if (row - xtra_rows >= wp->w_height - 2)
			    mod_bot = MAXLNUM;
			else
			{
			    check_for_delay(FALSE);
			    if (win_del_lines(wp, row,
					    -xtra_rows, FALSE, FALSE) == FAIL)
				mod_bot = MAXLNUM;
			    else
				bot_start = wp->w_height + xtra_rows;
			}
		    }
		    else if (xtra_rows > 0)
		    {
			/* May scroll text down.  If there is not enough
			 * remaining text of scrolling fails, must redraw the
			 * rest. */
			if (row + xtra_rows >= wp->w_height - 2)
			    mod_bot = MAXLNUM;
			else
			{
			    check_for_delay(FALSE);
			    if (win_ins_lines(wp, row + old_rows,
					     xtra_rows, FALSE, FALSE) == FAIL)
				mod_bot = MAXLNUM;
			    else if (top_end > row + old_rows)
				/* Scrolled the part at the top that requires
				 * updating down. */
				top_end += xtra_rows;
			}
		    }

		    /* When not updating the rest, may need to move w_lines[]
		     * entries. */
		    if (mod_bot != MAXLNUM && i != j)
		    {
			if (j < i)
			{
			    int x = row + new_rows;

			    /* move entries in w_lines[] upwards */
			    for (;;)
			    {
				/* stop at last valid entry in w_lines[] */
				if (i >= wp->w_lines_valid)
				{
				    wp->w_lines_valid = j;
				    break;
				}
				wp->w_lines[j] = wp->w_lines[i];
				/* stop at a line that won't fit */
				if (x + (int)wp->w_lines[j].wl_size
							   > wp->w_height)
				{
				    wp->w_lines_valid = j + 1;
				    break;
				}
				x += wp->w_lines[j++].wl_size;
				++i;
			    }
			    if (bot_start > x)
				bot_start = x;
			}
			else /* j > i */
			{
			    /* move entries in w_lines[] downwards */
			    j -= i;
			    wp->w_lines_valid += j;
			    if (wp->w_lines_valid > wp->w_height)
				wp->w_lines_valid = wp->w_height;
			    for (i = wp->w_lines_valid; i - j >= idx; --i)
				wp->w_lines[i] = wp->w_lines[i - j];

			    /* The w_lines[] entries for inserted lines are
			     * now invalid, but wl_size may be used above.
			     * Reset to zero. */
			    while (i >= idx)
			    {
				wp->w_lines[i].wl_size = 0;
				wp->w_lines[i--].wl_valid = FALSE;
			    }
			}
		    }
		}

		/* When inserting or deleting lines and 'number' is set:
		 * Redraw all lines below the change to update the line
		 * numbers. */
		if (buf->b_mod_xlines != 0 && wp->w_p_nu)
		    bot_start = 0;
	    }

#ifdef FEAT_FOLDING
	    /*
	     * When lines are folded, display one line for all of them.
	     * Otherwise, display normally (can be several display lines when
	     * 'wrap' is on).
	     */
	    fold_count = foldedCount(wp, lnum, &win_foldinfo);
	    if (fold_count != 0)
	    {
		fold_line(wp, fold_count, &win_foldinfo, lnum, row);
		++row;
		--fold_count;
		wp->w_lines[idx].wl_folded = TRUE;
		wp->w_lines[idx].wl_lastlnum = lnum + fold_count;
# ifdef FEAT_SYN_HL
		did_update = DID_FOLD;
# endif
	    }
	    else
#endif
	    if (idx < wp->w_lines_valid
		    && wp->w_lines[idx].wl_valid
		    && wp->w_lines[idx].wl_lnum == lnum
		    && lnum > wp->w_topline
		    && !(dy_flags & DY_LASTLINE)
		    && srow + wp->w_lines[idx].wl_size > wp->w_height
#ifdef FEAT_DIFF
		    && diff_check_fill(wp, lnum) == 0
#endif
		    )
	    {
		/* This line is not going to fit.  Don't draw anything here,
		 * will draw "@  " lines below. */
		row = wp->w_height + 1;
	    }
	    else
	    {
#ifdef FEAT_SEARCH_EXTRA
		prepare_search_hl(wp, lnum);
#endif
#ifdef FEAT_SYN_HL
		/* Let the syntax stuff know we skipped a few lines. */
		if (syntax_last_parsed != 0 && syntax_last_parsed + 1 < lnum
						       && syntax_present(buf))
		    syntax_end_parsing(syntax_last_parsed + 1);
#endif

		/*
		 * Display one line.
		 */
		row = win_line(wp, lnum, srow, wp->w_height);

#ifdef FEAT_FOLDING
		wp->w_lines[idx].wl_folded = FALSE;
		wp->w_lines[idx].wl_lastlnum = lnum;
#endif
#ifdef FEAT_SYN_HL
		did_update = DID_LINE;
		syntax_last_parsed = lnum;
#endif
	    }

	    wp->w_lines[idx].wl_lnum = lnum;
	    wp->w_lines[idx].wl_valid = TRUE;
	    if (row > wp->w_height)	/* past end of screen */
	    {
		/* we may need the size of that too long line later on */
		if (dollar_vcol == 0)
		    wp->w_lines[idx].wl_size = plines_win(wp, lnum, TRUE);
		++idx;
		break;
	    }
	    if (dollar_vcol == 0)
		wp->w_lines[idx].wl_size = row - srow;
	    ++idx;
#ifdef FEAT_FOLDING
	    lnum += fold_count + 1;
#else
	    ++lnum;
#endif
	}
	else
	{
	    /* This line does not need updating, advance to the next one */
	    row += wp->w_lines[idx++].wl_size;
	    if (row > wp->w_height)	/* past end of screen */
		break;
#ifdef FEAT_FOLDING
	    lnum = wp->w_lines[idx - 1].wl_lastlnum + 1;
#else
	    ++lnum;
#endif
#ifdef FEAT_SYN_HL
	    did_update = DID_NONE;
#endif
	}

	if (lnum > buf->b_ml.ml_line_count)
	{
	    eof = TRUE;
	    break;
	}
    }
    /*
     * End of loop over all window lines.
     */


    if (idx > wp->w_lines_valid)
	wp->w_lines_valid = idx;

#ifdef FEAT_SYN_HL
    /*
     * Let the syntax stuff know we stop parsing here.
     */
    if (syntax_last_parsed != 0 && syntax_present(buf))
	syntax_end_parsing(syntax_last_parsed + 1);
#endif

    /*
     * If we didn't hit the end of the file, and we didn't finish the last
     * line we were working on, then the line didn't fit.
     */
    wp->w_empty_rows = 0;
#ifdef FEAT_DIFF
    wp->w_filler_rows = 0;
#endif
    if (!eof && !didline)
    {
	if (lnum == wp->w_topline)
	{
	    /*
	     * Single line that does not fit!
	     * Don't overwrite it, it can be edited.
	     */
	    wp->w_botline = lnum + 1;
	}
#ifdef FEAT_DIFF
	else if (diff_check_fill(wp, lnum) >= wp->w_height - srow)
	{
	    /* Window ends in filler lines. */
	    wp->w_botline = lnum;
	    wp->w_filler_rows = wp->w_height - srow;
	}
#endif
	else if (dy_flags & DY_LASTLINE)	/* 'display' has "lastline" */
	{
	    /*
	     * Last line isn't finished: Display "@@@" at the end.
	     */
	    screen_fill(W_WINROW(wp) + wp->w_height - 1,
		    W_WINROW(wp) + wp->w_height,
		    (int)W_ENDCOL(wp) - 3, (int)W_ENDCOL(wp),
		    '@', '@', hl_attr(HLF_AT));
	    set_empty_rows(wp, srow);
	    wp->w_botline = lnum;
	}
	else
	{
	    win_draw_end(wp, '@', ' ', srow, wp->w_height, HLF_AT);
	    wp->w_botline = lnum;
	}
    }
    else
    {
#ifdef FEAT_VERTSPLIT
	draw_vsep_win(wp, row);
#endif
	if (eof)		/* we hit the end of the file */
	{
	    wp->w_botline = buf->b_ml.ml_line_count + 1;
#ifdef FEAT_DIFF
	    j = diff_check_fill(wp, wp->w_botline);
	    if (j > 0 && !wp->w_botfill)
	    {
		/*
		 * Display filler lines at the end of the file
		 */
		if (char2cells(fill_diff) > 1)
		    i = '-';
		else
		    i = fill_diff;
		if (row + j > wp->w_height)
		    j = wp->w_height - row;
		win_draw_end(wp, i, i, row, row + (int)j, HLF_DED);
		row += j;
	    }
#endif
	}
	else if (dollar_vcol == 0)
	    wp->w_botline = lnum;

	/* make sure the rest of the screen is blank */
	/* put '~'s on rows that aren't part of the file. */
	win_draw_end(wp, '~', ' ', row, wp->w_height, HLF_AT);
    }

    /* Reset the type of redrawing required, the window has been updated. */
    wp->w_redr_type = 0;
#ifdef FEAT_DIFF
    wp->w_old_topfill = wp->w_topfill;
    wp->w_old_botfill = wp->w_botfill;
#endif

    if (dollar_vcol == 0)
    {
	/*
	 * There is a trick with w_botline.  If we invalidate it on each
	 * change that might modify it, this will cause a lot of expensive
	 * calls to plines() in update_topline() each time.  Therefore the
	 * value of w_botline is often approximated, and this value is used to
	 * compute the value of w_topline.  If the value of w_botline was
	 * wrong, check that the value of w_topline is correct (cursor is on
	 * the visible part of the text).  If it's not, we need to redraw
	 * again.  Mostly this just means scrolling up a few lines, so it
	 * doesn't look too bad.  Only do this for the current window (where
	 * changes are relevant).
	 */
	wp->w_valid |= VALID_BOTLINE;
	if (wp == curwin && wp->w_botline != old_botline && !recursive)
	{
	    recursive = TRUE;
	    curwin->w_valid &= ~VALID_TOPLINE;
	    update_topline();	/* may invalidate w_botline again */
	    if (must_redraw != 0)
	    {
		/* Don't update for changes in buffer again. */
		i = curbuf->b_mod_set;
		curbuf->b_mod_set = FALSE;
		win_update(curwin);
		must_redraw = 0;
		curbuf->b_mod_set = i;
	    }
	    recursive = FALSE;
	}
    }

#if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA)
    /* restore got_int, unless CTRL-C was hit while redrawing */
    if (!got_int)
	got_int = save_got_int;
#endif
}

#ifdef FEAT_SIGNS
static int draw_signcolumn __ARGS((win_T *wp));

/*
 * Return TRUE when window "wp" has a column to draw signs in.
 */
    static int
draw_signcolumn(wp)
    win_T *wp;
{
    return (wp->w_buffer->b_signlist != NULL
# ifdef FEAT_NETBEANS_INTG
			    || usingNetbeans
# endif
		    );
}
#endif

/*
 * Clear the rest of the window and mark the unused lines with "c1".  use "c2"
 * as the filler character.
 */
    static void
win_draw_end(wp, c1, c2, row, endrow, hl)
    win_T	*wp;
    int		c1;
    int		c2;
    int		row;
    int		endrow;
    enum hlf_value hl;
{
#if defined(FEAT_FOLDING) || defined(FEAT_SIGNS) || defined(FEAT_CMDWIN)
    int		n = 0;
# define FDC_OFF n
#else
# define FDC_OFF 0
#endif

#ifdef FEAT_RIGHTLEFT
    if (wp->w_p_rl)
    {
	/* No check for cmdline window: should never be right-left. */
# ifdef FEAT_FOLDING
	n = wp->w_p_fdc;

	if (n > 0)
	{
	    /* draw the fold column at the right */
	    if (n > wp->w_width)
		n = wp->w_width;
	    screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
		    W_ENDCOL(wp) - n, (int)W_ENDCOL(wp),
		    ' ', ' ', hl_attr(HLF_FC));
	}
# endif
# ifdef FEAT_SIGNS
	if (draw_signcolumn(wp))
	{
	    int nn = n + 2;

	    /* draw the sign column left of the fold column */
	    if (nn > wp->w_width)
		nn = wp->w_width;
	    screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
		    W_ENDCOL(wp) - nn, (int)W_ENDCOL(wp) - n,
		    ' ', ' ', hl_attr(HLF_SC));
	    n = nn;
	}
# endif
	screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
		W_WINCOL(wp), W_ENDCOL(wp) - 1 - FDC_OFF,
		c2, c2, hl_attr(hl));
	screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
		W_ENDCOL(wp) - 1 - FDC_OFF, W_ENDCOL(wp) - FDC_OFF,
		c1, c2, hl_attr(hl));
    }
    else
#endif
    {
#ifdef FEAT_CMDWIN
	if (cmdwin_type != 0 && wp == curwin)
	{
	    /* draw the cmdline character in the leftmost column */
	    n = 1;
	    if (n > wp->w_width)
		n = wp->w_width;
	    screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
		    W_WINCOL(wp), (int)W_WINCOL(wp) + n,
		    cmdwin_type, ' ', hl_attr(HLF_AT));
	}
#endif
#ifdef FEAT_FOLDING
	if (wp->w_p_fdc > 0)
	{
	    int	    nn = n + wp->w_p_fdc;

	    /* draw the fold column at the left */
	    if (nn > W_WIDTH(wp))
		nn = W_WIDTH(wp);
	    screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
		    W_WINCOL(wp) + n, (int)W_WINCOL(wp) + nn,
		    ' ', ' ', hl_attr(HLF_FC));
	    n = nn;
	}
#endif
#ifdef FEAT_SIGNS
	if (draw_signcolumn(wp))
	{
	    int	    nn = n + 2;

	    /* draw the sign column after the fold column */
	    if (nn > W_WIDTH(wp))
		nn = W_WIDTH(wp);
	    screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
		    W_WINCOL(wp) + n, (int)W_WINCOL(wp) + nn,
		    ' ', ' ', hl_attr(HLF_SC));
	    n = nn;
	}
#endif
	screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + endrow,
		W_WINCOL(wp) + FDC_OFF, (int)W_ENDCOL(wp),
		c1, c2, hl_attr(hl));
    }
    set_empty_rows(wp, row);
}

#ifdef FEAT_FOLDING
/*
 * Display one folded line.
 */
    static void
fold_line(wp, fold_count, foldinfo, lnum, row)
    win_T	*wp;
    long	fold_count;
    foldinfo_T	*foldinfo;
    linenr_T	lnum;
    int		row;
{
    char_u	buf[51];
    pos_T	*top, *bot;
    linenr_T	lnume = lnum + fold_count - 1;
    int		len;
    char_u	*p;
    char_u	*text = NULL;
    int		fdc;
    int		level;
    int		col;
    int		txtcol;
    int		off = (int)(current_ScreenLine - ScreenLines);

    /* Build the fold line:
     * 1. Add the cmdwin_type for the command-line window
     * 2. Add the 'foldcolumn'
     * 3. Add the 'number' column
     * 4. Compose the text
     * 5. Add the text
     * 6. set highlighting for the Visual area an other text
     */
    col = 0;

    /*
     * 1. Add the cmdwin_type for the command-line window
     * Ignores 'rightleft', this window is never right-left.
     */
#ifdef FEAT_CMDWIN
    if (cmdwin_type != 0 && wp == curwin)
    {
	ScreenLines[off] = cmdwin_type;
	ScreenAttrs[off] = hl_attr(HLF_AT);
#ifdef FEAT_MBYTE
	if (enc_utf8)
	    ScreenLinesUC[off] = 0;
#endif
	++col;
    }
#endif

    /*
     * 2. Add the 'foldcolumn'
     */
    fdc = wp->w_p_fdc;
    if (fdc > W_WIDTH(wp) - col)
	fdc = W_WIDTH(wp) - col;
    if (fdc > 0)
    {
	fill_foldcolumn(buf, wp, TRUE, lnum);
#ifdef FEAT_RIGHTLEFT
	if (wp->w_p_rl)
	{
	    int		i;

	    copy_text_attr(off + W_WIDTH(wp) - fdc - col, buf, fdc,
							     hl_attr(HLF_FC));
	    /* reverse the fold column */
	    for (i = 0; i < fdc; ++i)
		ScreenLines[off + W_WIDTH(wp) - i - 1 - col] = buf[i];
	}
	else
#endif
	    copy_text_attr(off + col, buf, fdc, hl_attr(HLF_FC));
	col += fdc;
    }

#ifdef FEAT_RIGHTLEFT
# define RL_MEMSET(p, v, l) vim_memset(ScreenAttrs + off + (wp->w_p_rl ? (W_WIDTH(wp) - (p) - (l)) : (p)), v, l)
#else
# define RL_MEMSET(p, v, l) vim_memset(ScreenAttrs + off + p, v, l)
#endif

    /* Set all attributes of the 'number' column and the text */
    RL_MEMSET(col, hl_attr(HLF_FL), (size_t)(W_WIDTH(wp) - col));

#ifdef FEAT_SIGNS
    /* If signs are being displayed, add two spaces. */
    if (draw_signcolumn(wp))
    {
	len = W_WIDTH(wp) - col;
	if (len > 0)
	{
	    if (len > 2)
		len = 2;
# ifdef FEAT_RIGHTLEFT
	    if (wp->w_p_rl)
		/* the line number isn't reversed */
		copy_text_attr(off + W_WIDTH(wp) - len - col,
					(char_u *)"  ", len, hl_attr(HLF_FL));
	    else
# endif
		copy_text_attr(off + col, (char_u *)"  ", len, hl_attr(HLF_FL));
	    col += len;
	}
    }
#endif

    /*
     * 3. Add the 'number' column
     */
    if (wp->w_p_nu)
    {
	len = W_WIDTH(wp) - col;
	if (len > 0)
	{
	    int	    w = number_width(wp);

	    if (len > w + 1)
		len = w + 1;
	    sprintf((char *)buf, "%*ld ", w, (long)lnum);
#ifdef FEAT_RIGHTLEFT
	    if (wp->w_p_rl)
		/* the line number isn't reversed */
		copy_text_attr(off + W_WIDTH(wp) - len - col, buf, len,
							     hl_attr(HLF_FL));
	    else
#endif
		copy_text_attr(off + col, buf, len, hl_attr(HLF_FL));
	    col += len;
	}
    }

    /*
     * 4. Compose the folded-line string with 'foldtext', if set.
     */
#ifdef FEAT_EVAL
    if (*wp->w_p_fdt != NUL)
    {
	char_u	dashes[51];
	win_T	*save_curwin;

	/* Set "v:foldstart" and "v:foldend". */
	set_vim_var_nr(VV_FOLDSTART, lnum);
	set_vim_var_nr(VV_FOLDEND, lnume);

	/* Set "v:folddashes" to a string of "level" dashes. */
	/* Set "v:foldlevel" to "level". */
	level = foldinfo->fi_level;
	if (level > 50)
	    level = 50;
	vim_memset(dashes, '-', (size_t)level);
	dashes[level] = NUL;
	set_vim_var_string(VV_FOLDDASHES, dashes, -1);
	set_vim_var_nr(VV_FOLDLEVEL, (long)level);
	save_curwin = curwin;
	curwin = wp;
	curbuf = wp->w_buffer;

	++emsg_off;
	text = eval_to_string_safe(wp->w_p_fdt, NULL);
	--emsg_off;

	curwin = save_curwin;
	curbuf = curwin->w_buffer;
	set_vim_var_string(VV_FOLDDASHES, NULL, -1);

	if (text != NULL)
	{
	    /* Replace unprintable characters, if there are any.  But
	     * replace a TAB with a space. */
	    for (p = text; *p != NUL; ++p)
	    {
#ifdef FEAT_MBYTE
		if (has_mbyte && (len = (*mb_ptr2len_check)(p)) > 1)
		{
		    if (!vim_isprintc((*mb_ptr2char)(p)))
			break;
		    p += len - 1;
		}
		else
#endif
		    if (*p == TAB)
			*p = ' ';
		    else if (ptr2cells(p) > 1)
			break;
	    }
	    if (*p != NUL)
	    {
		p = transstr(text);
		vim_free(text);
		text = p;
	    }
	}
    }
    if (text == NULL)
#endif
    {
	sprintf((char *)buf, _("+--%3ld lines folded "), fold_count);
	text = buf;
    }

    txtcol = col;	/* remember where text starts */

    /*
     * 5. move the text to current_ScreenLine.  Fill up with "fill_fold".
     *    Right-left text is put in columns 0 - number-col, normal text is put
     *    in columns number-col - window-width.
     */
#ifdef FEAT_MBYTE
    if (has_mbyte)
    {
	int	cells;
	int	u8c, u8c_c1, u8c_c2;
	int	idx;
	int	c_len;
# ifdef FEAT_ARABIC
	int	prev_c = 0;		/* previous Arabic character */
	int	prev_c1 = 0;		/* first composing char for prev_c */
# endif

# ifdef FEAT_RIGHTLEFT
	if (wp->w_p_rl)
	    idx = off;
	else
# endif
	    idx = off + col;

	/* Store multibyte characters in ScreenLines[] et al. correctly. */
	for (p = text; *p != NUL; )
	{
	    cells = (*mb_ptr2cells)(p);
	    c_len = (*mb_ptr2len_check)(p);
	    if (col + cells > W_WIDTH(wp)
# ifdef FEAT_RIGHTLEFT
		    - (wp->w_p_rl ? col : 0)
# endif
		    )
		break;
	    ScreenLines[idx] = *p;
	    if (enc_utf8)
	    {
		u8c = utfc_ptr2char(p, &u8c_c1, &u8c_c2);
		if (*p < 0x80 && u8c_c1 == 0 && u8c_c2 == 0)
		{
		    ScreenLinesUC[idx] = 0;
#ifdef FEAT_ARABIC
		    prev_c = u8c;
#endif
		}
		else
		{
#ifdef FEAT_ARABIC
		    if (p_arshape && !p_tbidi && ARABIC_CHAR(u8c))
		    {
			/* Do Arabic shaping. */
			int	pc, pc1, nc, dummy;
			int	firstbyte = *p;

			/* The idea of what is the previous and next
			 * character depends on 'rightleft'. */
			if (wp->w_p_rl)
			{
			    pc = prev_c;
			    pc1 = prev_c1;
			    nc = utf_ptr2char(p + c_len);
			    prev_c1 = u8c_c1;
			}
			else
			{
			    pc = utfc_ptr2char(p + c_len, &pc1, &dummy);
			    nc = prev_c;
			}
			prev_c = u8c;

			u8c = arabic_shape(u8c, &firstbyte, &u8c_c1,
								 pc, pc1, nc);
			ScreenLines[idx] = firstbyte;
		    }
		    else
			prev_c = u8c;
#endif
		    /* Non-BMP character: display as ? or fullwidth ?. */
		    if (u8c >= 0x10000)
			ScreenLinesUC[idx] = (cells == 2) ? 0xff1f : (int)'?';
		    else
			ScreenLinesUC[idx] = u8c;
		    ScreenLinesC1[idx] = u8c_c1;
		    ScreenLinesC2[idx] = u8c_c2;
		}
		if (cells > 1)
		    ScreenLines[idx + 1] = 0;
	    }
	    else if (cells > 1)	    /* double-byte character */
	    {
		if (enc_dbcs == DBCS_JPNU && *p == 0x8e)
		    ScreenLines2[idx] = p[1];
		else
		    ScreenLines[idx + 1] = p[1];
	    }
	    col += cells;
	    idx += cells;
	    p += c_len;
	}
    }
    else
#endif
    {
	len = (int)STRLEN(text);
	if (len > W_WIDTH(wp) - col)
	    len = W_WIDTH(wp) - col;
	if (len > 0)
	{
#ifdef FEAT_RIGHTLEFT
	    if (wp->w_p_rl)
		STRNCPY(current_ScreenLine, text, len);
	    else
#endif
		STRNCPY(current_ScreenLine + col, text, len);
	    col += len;
	}
    }

    /* Fill the rest of the line with the fold filler */
#ifdef FEAT_RIGHTLEFT
    if (wp->w_p_rl)
	col -= txtcol;
#endif
    while (col < W_WIDTH(wp)
#ifdef FEAT_RIGHTLEFT
		    - (wp->w_p_rl ? txtcol : 0)
#endif
	    )
    {
#ifdef FEAT_MBYTE
	if (enc_utf8)
	{
	    if (fill_fold >= 0x80)
	    {
		ScreenLinesUC[off + col] = fill_fold;
		ScreenLinesC1[off + col] = 0;
		ScreenLinesC2[off + col] = 0;
	    }
	    else
		ScreenLinesUC[off + col] = 0;
	}
#endif
	ScreenLines[off + col++] = fill_fold;
    }

    if (text != buf)
	vim_free(text);

    /*
     * 6. set highlighting for the Visual area an other text.
     * If all folded lines are in the Visual area, highlight the line.
     */
#ifdef FEAT_VISUAL
    if (VIsual_active && wp->w_buffer == curwin->w_buffer)
    {
	if (ltoreq(curwin->w_cursor, VIsual))
	{
	    /* Visual is after curwin->w_cursor */
	    top = &curwin->w_cursor;
	    bot = &VIsual;
	}
	else
	{
	    /* Visual is before curwin->w_cursor */
	    top = &VIsual;
	    bot = &curwin->w_cursor;
	}
	if (lnum >= top->lnum
		&& lnume <= bot->lnum
		&& (VIsual_mode != 'v'
		    || ((lnum > top->lnum
			    || (lnum == top->lnum
				&& top->col == 0))
			&& (lnume < bot->lnum
			    || (lnume == bot->lnum
				&& (bot->col - (*p_sel == 'e'))
		>= STRLEN(ml_get_buf(wp->w_buffer, lnume, FALSE)))))))
	{
	    if (VIsual_mode == Ctrl_V)
	    {
		/* Visual block mode: highlight the chars part of the block */
		if (wp->w_old_cursor_fcol + txtcol < (colnr_T)W_WIDTH(wp))
		{
		    if (wp->w_old_cursor_lcol + txtcol < (colnr_T)W_WIDTH(wp))
			len = wp->w_old_cursor_lcol;
		    else
			len = W_WIDTH(wp) - txtcol;
		    RL_MEMSET(wp->w_old_cursor_fcol + txtcol, hl_attr(HLF_V),
				       (size_t)(len - wp->w_old_cursor_fcol));
		}
	    }
	    else
		/* Set all attributes of the text */
		RL_MEMSET(txtcol, hl_attr(HLF_V),
					      (size_t)(W_WIDTH(wp) - txtcol));
	}
    }
#endif


    SCREEN_LINE(row + W_WINROW(wp), W_WINCOL(wp), (int)W_WIDTH(wp),
						     (int)W_WIDTH(wp), FALSE);

    /*
     * Update w_cline_height and w_cline_folded if the cursor line was
     * updated (saves a call to plines() later).
     */
    if (wp == curwin
	    && lnum <= curwin->w_cursor.lnum
	    && lnume >= curwin->w_cursor.lnum)
    {
	curwin->w_cline_row = row;
	curwin->w_cline_height = 1;
	curwin->w_cline_folded = TRUE;
	curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW);
    }
}

/*
 * Copy "buf[len]" to ScreenLines["off"] and set attributes to "attr".
 */
    static void
copy_text_attr(off, buf, len, attr)
    int		off;
    char_u	*buf;
    int		len;
    int		attr;
{
    mch_memmove(ScreenLines + off, buf, (size_t)len);
# ifdef FEAT_MBYTE
    if (enc_utf8)
	vim_memset(ScreenLinesUC + off, 0, sizeof(u8char_T) * (size_t)len);
# endif
    vim_memset(ScreenAttrs + off, attr, (size_t)len);
}

/*
 * Fill the foldcolumn at "p" for window "wp".
 */
    static void
fill_foldcolumn(p, wp, closed, lnum)
    char_u	*p;
    win_T	*wp;
    int		closed;		/* TRUE of FALSE */
    linenr_T	lnum;		/* current line number */
{
    int		i = 0;
    int		level;
    int		first_level;

    /* Init to all spaces. */
    copy_spaces(p, (size_t)wp->w_p_fdc);

    level = win_foldinfo.fi_level;
    if (level > 0)
    {
	/* If the column is too narrow, we start at the lowest level that
	 * fits and use numbers to indicated the depth. */
	first_level = level - wp->w_p_fdc - closed + 2;
	if (first_level < 1)
	    first_level = 1;

	for (i = 0; i + 1 < wp->w_p_fdc; ++i)
	{
	    if (win_foldinfo.fi_lnum == lnum
			      && first_level + i >= win_foldinfo.fi_low_level)
		p[i] = '-';
	    else if (first_level == 1)
		p[i] = '|';
	    else if (first_level + i <= 9)
		p[i] = '0' + first_level + i;
	    else
		p[i] = '>';
	    if (first_level + i == level)
		break;
	}
    }
    if (closed)
	p[i] = '+';
}
#endif /* FEAT_FOLDING */

/*
 * Display line "lnum" of window 'wp' on the screen.
 * Start at row "startrow", stop when "endrow" is reached.
 * wp->w_virtcol needs to be valid.
 *
 * Return the number of last row the line occupies.
 */
    static int
win_line(wp, lnum, startrow, endrow)
    win_T	*wp;
    linenr_T	lnum;
    int		startrow;
    int		endrow;
{
    int		col;			/* visual column on screen */
    unsigned	off;			/* offset in ScreenLines/ScreenAttrs */
    int		c = 0;			/* init for GCC */
    long	vcol = 0;		/* virtual column (for tabs) */
    long	vcol_prev = -1;		/* "vcol" of previous character */
    char_u	*line;			/* current line */
    char_u	*ptr;			/* current position in "line" */
    int		row;			/* row in the window, excl w_winrow */
    int		screen_row;		/* row on the screen, incl w_winrow */

    char_u	extra[18];		/* "%ld" and 'fdc' must fit in here */
    int		n_extra = 0;		/* number of extra chars */
    char_u	*p_extra = NULL;	/* string of extra chars */
    int		c_extra = NUL;		/* extra chars, all the same */
    int		extra_attr = 0;		/* attributes when n_extra != 0 */
    static char_u *at_end_str = (char_u *)""; /* used for p_extra when
					   displaying lcs_eol at end-of-line */
    int		lcs_eol_one = lcs_eol;	/* lcs_eol until it's been used */
    int		lcs_prec_todo = lcs_prec;   /* lcs_prec until it's been used */

    /* saved "extra" items for when draw_state becomes WL_LINE (again) */
    int		saved_n_extra = 0;
    char_u	*saved_p_extra = NULL;
    int		saved_c_extra = 0;
    int		saved_char_attr = 0;

    int		n_attr = 0;		/* chars with special attr */
    int		saved_attr2 = 0;	/* char_attr saved for n_attr */
    int		n_attr3 = 0;		/* chars with overruling special attr */
    int		saved_attr3 = 0;	/* char_attr saved for n_attr3 */

    int		n_skip = 0;		/* nr of chars to skip for 'nowrap' */

    int		fromcol, tocol;		/* start/end of inverting */
    int		fromcol_prev = -2;	/* start of inverting after cursor */
    int		noinvcur = FALSE;	/* don't invert the cursor */
#ifdef FEAT_VISUAL
    pos_T	*top, *bot;
#endif
    pos_T	pos;
    long	v;

    int		char_attr = 0;		/* attributes for next character */
    int		area_highlighting = FALSE; /* Visual or incsearch highlighting
					      in this line */
    int		attr = 0;		/* attributes for area highlighting */
    int		area_attr = 0;		/* attributes desired by highlighting */
    int		search_attr = 0;	/* attributes desired by 'hlsearch' */
#ifdef FEAT_SYN_HL
    int		syntax_attr = 0;	/* attributes desired by syntax */
    int		has_syntax = FALSE;	/* this buffer has syntax highl. */
    int		save_did_emsg;
#endif
    int		extra_check;		/* has syntax or linebreak */
#ifdef FEAT_MBYTE
    int		multi_attr = 0;		/* attributes desired by multibyte */
    int		mb_l = 1;		/* multi-byte byte length */
    int		mb_c = 0;		/* decoded multi-byte character */
    int		mb_utf8 = FALSE;	/* screen char is UTF-8 char */
    int		u8c_c1 = 0;		/* first composing UTF-8 char */
    int		u8c_c2 = 0;		/* second composing UTF-8 char */
#endif
#ifdef FEAT_DIFF
    int		filler_lines;		/* nr of filler lines to be drawn */
    int		filler_todo;		/* nr of filler lines still to do + 1 */
    enum hlf_value diff_hlf = (enum hlf_value)0; /* type of diff highlighting */
    int		change_start = MAXCOL;	/* first col of changed area */
    int		change_end = -1;	/* last col of changed area */
#endif
    colnr_T	trailcol = MAXCOL;	/* start of trailing spaces */
#ifdef FEAT_LINEBREAK
    int		need_showbreak = FALSE;
#endif
#if defined(FEAT_SIGNS) || (defined(FEAT_QUICKFIX) && defined(FEAT_WINDOWS))
# define LINE_ATTR
    int		line_attr = 0;		/* atrribute for the whole line */
#endif
#ifdef FEAT_SEARCH_EXTRA
    match_T	*shl;			/* points to search_hl or match_hl */
#endif
#ifdef FEAT_ARABIC
    int		prev_c = 0;		/* previous Arabic character */
    int		prev_c1 = 0;		/* first composing char for prev_c */
#endif

    /* draw_state: items that are drawn in sequence: */
#define WL_START	0		/* nothing done yet */
#ifdef FEAT_CMDWIN
# define WL_CMDLINE	WL_START + 1	/* cmdline window column */
#else
# define WL_CMDLINE	WL_START
#endif
#ifdef FEAT_FOLDING
# define WL_FOLD	WL_CMDLINE + 1	/* 'foldcolumn' */
#else
# define WL_FOLD	WL_CMDLINE
#endif
#ifdef FEAT_SIGNS
# define WL_SIGN	WL_FOLD + 1	/* column for signs */
#else
# define WL_SIGN	WL_FOLD		/* column for signs */
#endif
#define WL_NR		WL_SIGN + 1	/* line number */
#if defined(FEAT_LINEBREAK) || defined(FEAT_DIFF)
# define WL_SBR		WL_NR + 1	/* 'showbreak' or 'diff' */
#else
# define WL_SBR		WL_NR
#endif
#define WL_LINE		WL_SBR + 1	/* text in the line */
    int		draw_state = WL_START;	/* what to draw next */
#if defined(FEAT_XIM) && (defined(FEAT_GUI_GTK) || defined(FEAT_GUI_KDE))
    int		feedback_col = 0;
    int		feedback_old_attr = -1;
#endif


    if (startrow > endrow)		/* past the end already! */
	return startrow;

    row = startrow;
    screen_row = row + W_WINROW(wp);

    /*
     * To speed up the loop below, set extra_check when there is linebreak,
     * trailing white space and/or syntax processing to be done.
     */
#ifdef FEAT_LINEBREAK
    extra_check = wp->w_p_lbr;
#else
    extra_check = 0;
#endif
#ifdef FEAT_SYN_HL
    if (syntax_present(wp->w_buffer))
    {
	/* Prepare for syntax highlighting in this line.  When there is an
	 * error, stop syntax highlighting. */
	save_did_emsg = did_emsg;
	did_emsg = FALSE;
	syntax_start(wp, lnum);
	if (did_emsg)
	    syntax_clear(wp->w_buffer);
	else
	{
	    did_emsg = save_did_emsg;
	    has_syntax = TRUE;
	    extra_check = TRUE;
	}
    }
#endif

    /*
     * handle visual active in this window
     */
    fromcol = -10;
    tocol = MAXCOL;
#ifdef FEAT_VISUAL
    if (VIsual_active && wp->w_buffer == curwin->w_buffer)
    {
					/* Visual is after curwin->w_cursor */
	if (ltoreq(curwin->w_cursor, VIsual))
	{
	    top = &curwin->w_cursor;
	    bot = &VIsual;
	}
	else				/* Visual is before curwin->w_cursor */
	{
	    top = &VIsual;
	    bot = &curwin->w_cursor;
	}
	if (VIsual_mode == Ctrl_V)	/* block mode */
	{
	    if (lnum >= top->lnum && lnum <= bot->lnum)
	    {
		fromcol = wp->w_old_cursor_fcol;
		tocol = wp->w_old_cursor_lcol;
	    }
	}
	else				/* non-block mode */
	{
	    if (lnum > top->lnum && lnum <= bot->lnum)
		fromcol = 0;
	    else if (lnum == top->lnum)
	    {
		if (VIsual_mode == 'V')	/* linewise */
		    fromcol = 0;
		else
		{
		    getvvcol(wp, top, (colnr_T *)&fromcol, NULL, NULL);
		    if (gchar_pos(top) == NUL)
			tocol = fromcol + 1;
		}
	    }
	    if (VIsual_mode != 'V' && lnum == bot->lnum)
	    {
		if (*p_sel == 'e' && bot->col == 0
#ifdef FEAT_VIRTUALEDIT
			&& bot->coladd == 0
#endif
		   )
		{
		    fromcol = -10;
		    tocol = MAXCOL;
		}
		else
		{
		    pos = *bot;
		    if (*p_sel == 'e')
			getvvcol(wp, &pos, (colnr_T *)&tocol, NULL, NULL);
		    else
		    {
			getvvcol(wp, &pos, NULL, NULL, (colnr_T *)&tocol);
			++tocol;
		    }
		}
	    }
	}

#ifndef MSDOS
	/* Check if the character under the cursor should not be inverted */
	if (!highlight_match && lnum == curwin->w_cursor.lnum && wp == curwin
# ifdef FEAT_GUI
		&& !gui.in_use
# endif
		)
	    noinvcur = TRUE;
#endif

	/* if inverting in this line set area_highlighting */
	if (fromcol >= 0)
	{
	    area_highlighting = TRUE;
	    attr = hl_attr(HLF_V);
#if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
	    if (clip_star.available && !clip_star.owned && clip_isautosel())
		attr = hl_attr(HLF_VNC);
#endif
	}
    }

    /*
     * handle 'insearch' and ":s///c" highlighting
     */
    else
#endif /* FEAT_VISUAL */
	if (highlight_match
	    && wp == curwin
	    && lnum >= curwin->w_cursor.lnum
	    && lnum <= curwin->w_cursor.lnum + search_match_lines)
    {
	if (lnum == curwin->w_cursor.lnum)
	    getvcol(curwin, &(curwin->w_cursor),
					     (colnr_T *)&fromcol, NULL, NULL);
	else
	    fromcol = 0;
	if (lnum == curwin->w_cursor.lnum + search_match_lines)
	{
	    pos.lnum = lnum;
	    pos.col = search_match_endcol;
	    getvcol(curwin, &pos, (colnr_T *)&tocol, NULL, NULL);
	}
	else
	    tocol = MAXCOL;
	if (fromcol == tocol)		/* do at least one character */
	    tocol = fromcol + 1;	/* happens when past end of line */
	area_highlighting = TRUE;
	attr = hl_attr(HLF_I);
    }

#ifdef FEAT_DIFF
    filler_lines = diff_check(wp, lnum);
    if (filler_lines < 0)
    {
	if (filler_lines == -1)
	{
	    if (diff_find_change(wp, lnum, &change_start, &change_end))
		diff_hlf = HLF_ADD;	/* added line */
	    else if (change_start == 0)
		diff_hlf = HLF_TXD;	/* changed text */
	    else
		diff_hlf = HLF_CHD;	/* changed line */
	}
	else
	    diff_hlf = HLF_ADD;		/* added line */
	filler_lines = 0;
	area_highlighting = TRUE;
    }
    if (lnum == wp->w_topline)
	filler_lines = wp->w_topfill;
    filler_todo = filler_lines;
#endif

#ifdef LINE_ATTR
# ifdef FEAT_SIGNS
    /* If this line has a sign with line highlighting set line_attr. */
    v = buf_getsigntype(wp->w_buffer, lnum, SIGN_LINEHL);
    if (v != 0)
	line_attr = sign_get_attr((int)v, TRUE);
# endif
# if defined(FEAT_QUICKFIX) && defined(FEAT_WINDOWS)
    /* Highlight the current line in the quickfix window. */
    if (bt_quickfix(wp->w_buffer) && qf_current_entry() == lnum)
	line_attr = hl_attr(HLF_L);
# endif
    if (line_attr != 0)
	area_highlighting = TRUE;
#endif

    line = ml_get_buf(wp->w_buffer, lnum, FALSE);
    ptr = line;

    /* find start of trailing whitespace */
    if (wp->w_p_list && lcs_trail)
    {
	trailcol = (colnr_T)STRLEN(ptr);
	while (trailcol > (colnr_T)0 && vim_iswhite(ptr[trailcol - 1]))
	    --trailcol;
	trailcol += (colnr_T) (ptr - line);
	extra_check = TRUE;
    }

    /*
     * 'nowrap' or 'wrap' and a single line that doesn't fit: Advance to the
     * first character to be displayed.
     */
    if (wp->w_p_wrap)
	v = wp->w_skipcol;
    else
	v = wp->w_leftcol;
    if (v > 0)
    {
#ifdef FEAT_MBYTE
	char_u	*prev_ptr = ptr;
#endif
	while (vcol < v && *ptr != NUL)
	{
	    c = win_lbr_chartabsize(wp, ptr, (colnr_T)vcol, NULL);
	    vcol += c;
#ifdef FEAT_MBYTE
	    prev_ptr = ptr;
	    if (has_mbyte)
		ptr += (*mb_ptr2len_check)(ptr);
	    else
#endif
		++ptr;
	}

#ifdef FEAT_VIRTUALEDIT
	/* When 'virtualedit' is set the end of the line may be before the
	 * start of the displayed part. */
	if (vcol < v && *ptr == NUL && virtual_active())
	    vcol = v;
#endif

	/* Handle a character that's not completely on the screen: Put ptr at
	 * that character but skip the first few screen characters. */
	if (vcol > v)
	{
	    vcol -= c;
#ifdef FEAT_MBYTE
	    ptr = prev_ptr;
#else
	    --ptr;
#endif
	    n_skip = v - vcol;
	}

	/*
	 * Adjust for when the inverted text is before the screen,
	 * and when the start of the inverted text is before the screen.
	 */
	if (tocol <= vcol)
	    fromcol = 0;
	else if (fromcol >= 0 && fromcol < vcol)
	    fromcol = vcol;

#ifdef FEAT_LINEBREAK
	/* When w_skipcol is non-zero, first line needs 'showbreak' */
	if (wp->w_p_wrap)
	    need_showbreak = TRUE;
#endif
    }

    /*
     * Correct highlighting for cursor that can't be disabled.
     * Avoids having to check this for each character.
     */
    if (fromcol >= 0)
    {
	if (noinvcur)
	{
	    if ((colnr_T)fromcol == wp->w_virtcol)
	    {
		/* highlighting starts at cursor, let it start just after the
		 * cursor */
		fromcol_prev = fromcol;
		fromcol = -1;
	    }
	    else if ((colnr_T)fromcol < wp->w_virtcol)
		/* restart highlighting after the cursor */
		fromcol_prev = wp->w_virtcol;
	}
	if (fromcol >= tocol)
	    fromcol = -1;
    }

#ifdef FEAT_SEARCH_EXTRA
    /*
     * Handle highlighting the last used search pattern.
     * Do this for both search_hl and match_hl.
     */
    shl = &search_hl;
    for (;;)
    {
	shl->startp = NULL;
	shl->endp = NULL;
	shl->attr_cur = 0;
	if (shl->rm.regprog != NULL)
	{
	    v = (long)(ptr - line);
	    next_search_hl(wp, shl, lnum, (colnr_T)v);

	    /* Need to get the line again, a multi-line regexp may have made it
	     * invalid. */
	    line = ml_get_buf(wp->w_buffer, lnum, FALSE);
	    ptr = line + v;

	    if (shl->lnum != 0 && shl->lnum <= lnum)
	    {
		if (shl->lnum == lnum)
		    shl->startp = line + shl->rm.startpos[0].col;
		else
		    shl->startp = line;
		if (lnum == shl->lnum + shl->rm.endpos[0].lnum
						  - shl->rm.startpos[0].lnum)
		    shl->endp = line + shl->rm.endpos[0].col;
		else
		    shl->endp = line + MAXCOL;
		/* Highlight one character for an empty match. */
		if (shl->startp == shl->endp)
		{
#ifdef FEAT_MBYTE
		    if (has_mbyte && *shl->endp != NUL)
			shl->endp += (*mb_ptr2len_check)(shl->endp);
		    else
#endif
			++shl->endp;
		}
		if (shl->startp < ptr)  /* match at leftcol */
		{
		    shl->attr_cur = shl->attr;
		    search_attr = shl->attr;
		}
		area_highlighting = TRUE;
	    }
	}
	if (shl == &match_hl)
	    break;
	shl = &match_hl;
    }
#endif

    off = (unsigned) (current_ScreenLine - ScreenLines);
    col = 0;
#ifdef FEAT_RIGHTLEFT
    if (wp->w_p_rl)
    {
	/* Rightleft window: process the text in the normal direction, but put
	 * it in current_ScreenLine[] from right to left.  Start at the
	 * rightmost column of the window. */
	col = W_WIDTH(wp) - 1;
	off += col;
    }
#endif

    /*
     * Repeat for the whole displayed line.
     */
    for (;;)
    {
	/* Skip this quickly when working on the text. */
	if (draw_state != WL_LINE)
	{
#ifdef FEAT_CMDWIN
	    if (draw_state == WL_CMDLINE - 1 && n_extra == 0)
	    {
		draw_state = WL_CMDLINE;
		if (cmdwin_type != 0 && wp == curwin)
		{
		    /* Draw the cmdline character. */
		    *extra = cmdwin_type;
		    n_extra = 1;
		    p_extra = extra;
		    c_extra = NUL;
		    char_attr = hl_attr(HLF_AT);
		}
	    }
#endif

#ifdef FEAT_FOLDING
	    if (draw_state == WL_FOLD - 1 && n_extra == 0)
	    {
		draw_state = WL_FOLD;
		if (wp->w_p_fdc > 0)
		{
		    /* Draw the 'foldcolumn'. */
		    fill_foldcolumn(extra, wp, FALSE, lnum);
		    n_extra = wp->w_p_fdc;
		    p_extra = extra;
		    c_extra = NUL;
		    char_attr = hl_attr(HLF_FC);
		}
	    }
#endif

#ifdef FEAT_SIGNS
	    if (draw_state == WL_SIGN - 1 && n_extra == 0)
	    {
		draw_state = WL_SIGN;
		/* Show the sign column when there are any signs in this
		 * buffer or when using Netbeans. */
		if (draw_signcolumn(wp)
# ifdef FEAT_DIFF
			&& filler_todo <= 0
# endif
		   )
		{
		    int_u	text_sign;
# ifdef FEAT_SIGN_ICONS
		    int_u	icon_sign;
# endif

		    /* Draw two cells with the sign value or blank. */
		    c_extra = ' ';
		    char_attr = hl_attr(HLF_SC);
		    n_extra = 2;

		    if (row == startrow)
		    {
			text_sign = buf_getsigntype(wp->w_buffer, lnum,
								   SIGN_TEXT);
# ifdef FEAT_SIGN_ICONS
			icon_sign = buf_getsigntype(wp->w_buffer, lnum,
								   SIGN_ICON);
			if (gui.in_use && icon_sign != 0)
			{
			    /* Use the image in this position. */
			    c_extra = SIGN_BYTE;
#  ifdef FEAT_NETBEANS_INTG
			    if (buf_signcount(wp->w_buffer, lnum) > 1)
				c_extra = MULTISIGN_BYTE;
#  endif
			    char_attr = icon_sign;
			}
			else
# endif
			    if (text_sign != 0)
			{
			    p_extra = sign_get_text(text_sign);
			    if (p_extra != NULL)
			    {
				c_extra = NUL;
				n_extra = STRLEN(p_extra);
			    }
			    char_attr = sign_get_attr(text_sign, FALSE);
			}
		    }
		}
	    }
#endif

	    if (draw_state == WL_NR - 1 && n_extra == 0)
	    {
		draw_state = WL_NR;
		/* Display the line number.  After the first fill with blanks
		 * when the 'n' flag isn't in 'cpo' */
		if (wp->w_p_nu
			&& (row == startrow
#ifdef FEAT_DIFF
			    + filler_lines
#endif
			    || vim_strchr(p_cpo, CPO_NUMCOL) == NULL))
		{
		    /* Draw the line number (empty space after wrapping). */
		    if (row == startrow
#ifdef FEAT_DIFF
			    + filler_lines
#endif
			    )
		    {
			sprintf((char *)extra, "%*ld ",
						number_width(wp), (long)lnum);
			if (wp->w_skipcol > 0)
			    for (p_extra = extra; *p_extra == ' '; ++p_extra)
				*p_extra = '-';
#ifdef FEAT_RIGHTLEFT
			if (wp->w_p_rl)		    /* reverse line numbers */
			    rl_mirror(extra);
#endif
			p_extra = extra;
			c_extra = NUL;
		    }
		    else
			c_extra = ' ';
		    n_extra = number_width(wp) + 1;
		    char_attr = hl_attr(HLF_N);
		}
	    }

#if defined(FEAT_LINEBREAK) || defined(FEAT_DIFF)
	    if (draw_state == WL_SBR - 1 && n_extra == 0)
	    {
		draw_state = WL_SBR;
# ifdef FEAT_DIFF
		if (filler_todo > 0)
		{
		    /* Draw "deleted" diff line(s). */
		    if (char2cells(fill_diff) > 1)
			c_extra = '-';
		    else
			c_extra = fill_diff;
#  ifdef FEAT_RIGHTLEFT
		    if (wp->w_p_rl)
			n_extra = col + 1;
		    else
#  endif
			n_extra = W_WIDTH(wp) - col;
		    char_attr = hl_attr(HLF_DED);
		}
# endif
# ifdef FEAT_LINEBREAK
		if (*p_sbr != NUL && need_showbreak)
		{
		    /* Draw 'showbreak' at the start of each broken line. */
		    p_extra = p_sbr;
		    c_extra = NUL;
		    n_extra = (int)STRLEN(p_sbr);
		    char_attr = hl_attr(HLF_AT);
		    need_showbreak = FALSE;
		    /* Correct end of highlighted area for 'showbreak',
		     * required when 'linebreak' is also set. */
		    if (tocol == vcol)
			tocol += n_extra;
		}
# endif
	    }
#endif

	    if (draw_state == WL_LINE - 1 && n_extra == 0)
	    {
		draw_state = WL_LINE;
		if (saved_n_extra)
		{
		    /* Continue item from end of wrapped line. */
		    n_extra = saved_n_extra;
		    c_extra = saved_c_extra;
		    p_extra = saved_p_extra;
		    char_attr = saved_char_attr;
		}
		else
		    char_attr = 0;
	    }
	}

	/* When still displaying '$' of change command, stop at cursor */
	if (dollar_vcol != 0 && wp == curwin && vcol >= (long)wp->w_virtcol
#ifdef FEAT_DIFF
				   && filler_todo <= 0
#endif
		)
	{
	    SCREEN_LINE(screen_row, W_WINCOL(wp), col, -(int)W_WIDTH(wp),
								  wp->w_p_rl);
	    /* Pretend we have finished updating the window. */
	    row = wp->w_height;
	    break;
	}

	if (draw_state == WL_LINE && area_highlighting)
	{
	    /* handle Visual or match highlighting in this line */
	    if (vcol == fromcol
#ifdef FEAT_MBYTE
		    || (has_mbyte && vcol + 1 == fromcol && n_extra == 0
			&& (*mb_ptr2cells)(ptr) > 1)
#endif
		    || ((int)vcol_prev == fromcol_prev
			&& vcol < tocol))
		area_attr = attr;		/* start highlighting */
	    else if (area_attr != 0
		    && (vcol == tocol
			|| (noinvcur && (colnr_T)vcol == wp->w_virtcol)))
#ifdef LINE_ATTR
		area_attr = line_attr;		/* stop highlighting */
	    else if (line_attr && ((fromcol == -10 && tocol == MAXCOL)
					 || (vcol < fromcol || vcol > tocol)))
		area_attr = line_attr;
#else
		area_attr = 0;			/* stop highlighting */
#endif

#ifdef FEAT_SEARCH_EXTRA
	    if (!n_extra)
	    {
		/*
		 * Check for start/end of search pattern match.
		 * After end, check for start/end of next match.
		 * When another match, have to check for start again.
		 * Watch out for matching an empty string!
		 * Do this first for search_hl, then for match_hl, so that
		 * ":match" overrules 'hlsearch'.
		 */
		shl = &search_hl;
		for (;;)
		{
		    while (shl->rm.regprog != NULL)
		    {
			if (shl->startp != NULL
				&& ptr >= shl->startp
				&& ptr < shl->endp)
			{
			    shl->attr_cur = shl->attr;
			}
			else if (ptr == shl->endp)
			{
			    shl->attr_cur = 0;

			    v = (long)(ptr - line);
			    next_search_hl(wp, shl, lnum, (colnr_T)v);

			    /* Need to get the line again, a multi-line regexp
			     * may have made it invalid. */
			    line = ml_get_buf(wp->w_buffer, lnum, FALSE);
			    ptr = line + v;

			    if (shl->lnum == lnum)
			    {
				shl->startp = line + shl->rm.startpos[0].col;
				if (shl->rm.endpos[0].lnum == 0)
				    shl->endp = line + shl->rm.endpos[0].col;
				else
				    shl->endp = line + MAXCOL;

				if (shl->startp == shl->endp)
				{
				    /* highlight empty match, try again after
				     * it */
#ifdef FEAT_MBYTE
				    if (has_mbyte)
					shl->endp +=
					       (*mb_ptr2len_check)(shl->endp);
				    else
#endif
					++shl->endp;
				}

				/* Loop to check if the match starts at the
				 * current position */
				continue;
			    }
			}
			break;
		    }
		    if (shl == &match_hl)
			break;
		    shl = &match_hl;
		}
		/* ":match" highlighting overrules 'hlsearch' */
		if (match_hl.attr_cur != 0)
		    search_attr = match_hl.attr_cur;
		else
		    search_attr = search_hl.attr_cur;
	    }
#endif

	    if (area_attr != 0)
		char_attr = area_attr;
#ifdef FEAT_SYN_HL
	    else if (search_attr == 0 && has_syntax)
		char_attr = syntax_attr;
#endif
	    else
		char_attr = search_attr;

#ifdef FEAT_DIFF
	    if (diff_hlf != (enum hlf_value)0 && n_extra == 0)
	    {
		if (diff_hlf == HLF_CHD && ptr - line >= change_start)
		    diff_hlf = HLF_TXD;		/* changed text */
		if (diff_hlf == HLF_TXD && ptr - line > change_end)
		    diff_hlf = HLF_CHD;		/* changed line */
		if (attr == 0 || area_attr != attr)
		    area_attr = hl_attr(diff_hlf);
		if (attr == 0 || char_attr != attr)
		{
		    if (search_attr != 0)
			char_attr = search_attr;
		    else
			char_attr = hl_attr(diff_hlf);
		}
	    }
#endif
	}

	/*
	 * Get the next character to put on the screen.
	 */
	/*
	 * The 'extra' array contains the extra stuff that is inserted to
	 * represent special characters (non-printable stuff).  When all
	 * characters are the same, c_extra is used.
	 * For the '$' of the 'list' option, n_extra == 1, p_extra == "".
	 */
	if (n_extra > 0)
	{
	    if (c_extra != NUL)
	    {
		c = c_extra;
#ifdef FEAT_MBYTE
		mb_c = c;	/* doesn't handle non-utf-8 multi-byte! */
		if (enc_utf8 && (*mb_char2len)(c) > 1)
		{
		    mb_utf8 = TRUE;
		    u8c_c1 = u8c_c2 = 0;
		}
		else
		    mb_utf8 = FALSE;
#endif
	    }
	    else
	    {
		c = *p_extra;
#ifdef FEAT_MBYTE
		if (has_mbyte)
		{
		    mb_c = c;
		    if (enc_utf8)
		    {
			/* If the UTF-8 character is more than one byte:
			 * Decode it into "mb_c". */
			mb_l = (*mb_ptr2len_check)(p_extra);
			mb_utf8 = FALSE;
			if (mb_l > n_extra)
			    mb_l = 1;
			else if (mb_l > 1)
			{
			    mb_c = utfc_ptr2char(p_extra, &u8c_c1, &u8c_c2);
			    mb_utf8 = TRUE;
			}
		    }
		    else
		    {
			/* if this is a DBCS character, put it in "mb_c" */
			mb_l = MB_BYTE2LEN(c);
			if (mb_l >= n_extra)
			    mb_l = 1;
			else if (mb_l > 1)
			    mb_c = (c << 8) + p_extra[1];
		    }
		    /* If a double-width char doesn't fit display a '>' in the
		     * last column. */
		    if (
# ifdef FEAT_RIGHTLEFT
			    wp->w_p_rl ? (col <= 0) :
# endif
				    (col >= W_WIDTH(wp) - 1)
			    && (*mb_char2cells)(mb_c) == 2)
		    {
			c = '>';
			mb_c = c;
			mb_l = 1;
			mb_utf8 = FALSE;
			multi_attr = hl_attr(HLF_AT);
			/* put the pointer back to output the double-width
			 * character at the start of the next line. */
			++n_extra;
			--p_extra;
		    }
		    else
		    {
			n_extra -= mb_l - 1;
			p_extra += mb_l - 1;
		    }
		}
#endif
		++p_extra;
	    }
	    --n_extra;
	}
	else
	{
	    /*
	     * Get a character from the line itself.
	     */
	    c = *ptr;
#ifdef FEAT_MBYTE
	    if (has_mbyte)
	    {
		mb_c = c;
		if (enc_utf8)
		{
		    /* If the UTF-8 character is more than one byte: Decode it
		     * into "mb_c". */
		    mb_l = (*mb_ptr2len_check)(ptr);
		    mb_utf8 = FALSE;
		    if (mb_l > 1)
		    {
			mb_c = utfc_ptr2char(ptr, &u8c_c1, &u8c_c2);
			/* Overlong encoded ASCII or ASCII with composing char
			 * is displayed normally, except a NUL. */
			if (mb_c < 0x80)
			    c = mb_c;
			mb_utf8 = TRUE;
		    }

		    if ((mb_l == 1 && c >= 0x80)
			    || (mb_l >= 1 && mb_c == 0)
			    || (mb_l > 1 && (!vim_isprintc(mb_c)
							 || mb_c >= 0x10000)))
		    {
			/*
			 * Illegal UTF-8 byte: display as <xx>.
			 * Non-BMP character : display as ? or fullwidth ?.
			 */
			if (mb_c < 0x10000)
			{
			    transchar_hex(extra, mb_c);
#ifdef FEAT_RIGHTLEFT
			    if (wp->w_p_rl)		/* reverse */
				rl_mirror(extra);
#endif
			}
			else if (utf_char2cells(mb_c) != 2)
			    STRCPY(extra, "?");
			else
			    /* 0xff1f in UTF-8: full-width '?' */
			    STRCPY(extra, "\357\274\237");

			p_extra = extra;
			c = *p_extra;
			mb_c = mb_ptr2char_adv(&p_extra);
			mb_utf8 = (c >= 0x80);
			n_extra = (int)STRLEN(p_extra);
			c_extra = NUL;
			if (area_attr == 0 && search_attr == 0)
			{
			    n_attr = n_extra + 1;
			    extra_attr = hl_attr(HLF_8);
			    saved_attr2 = char_attr; /* save current attr */
			}
		    }
		    else if (mb_l == 0)  /* at the NUL at end-of-line */
			mb_l = 1;
#ifdef FEAT_ARABIC
		    else if (p_arshape && !p_tbidi && ARABIC_CHAR(mb_c))
		    {
			/* Do Arabic shaping. */
			int	pc, pc1, nc, dummy;

			/* The idea of what is the previous and next
			 * character depends on 'rightleft'. */
			if (wp->w_p_rl)
			{
			    pc = prev_c;
			    pc1 = prev_c1;
			    nc = utf_ptr2char(ptr + mb_l);
			    prev_c1 = u8c_c1;
			}
			else
			{
			    pc = utfc_ptr2char(ptr + mb_l, &pc1, &dummy);
			    nc = prev_c;
			}
			prev_c = mb_c;

			mb_c = arabic_shape(mb_c, &c, &u8c_c1, pc, pc1, nc);
		    }
		    else
			prev_c = mb_c;
#endif
		}
		else	/* enc_dbcs */
		{
		    mb_l = MB_BYTE2LEN(c);
		    if (mb_l == 0)  /* at the NUL at end-of-line */
			mb_l = 1;
		    else if (mb_l > 1)
		    {
			/* We assume a second byte below 32 is illegal.
			 * Hopefully this is OK for all double-byte encodings!
			 */
			if (ptr[1] >= 32)
			    mb_c = (c << 8) + ptr[1];
			else
			{
			    if (ptr[1] == NUL)
			    {
				/* head byte at end of line */
				mb_l = 1;
				transchar_nonprint(extra, c);
			    }
			    else
			    {
				/* illegal tail byte */
				mb_l = 2;
				STRCPY(extra, "XX");
			    }
			    p_extra = extra;
			    n_extra = (int)STRLEN(extra) - 1;
			    c_extra = NUL;
			    c = *p_extra++;
			    if (area_attr == 0 && search_attr == 0)
			    {
				n_attr = n_extra + 1;
				extra_attr = hl_attr(HLF_8);
				saved_attr2 = char_attr; /* save current attr */
			    }
			    mb_c = c;
			}
		    }
		}
		/* If a double-width char doesn't fit display a '>' in the
		 * last column; the character is displayed at the start of the
		 * next line. */
		if ((
# ifdef FEAT_RIGHTLEFT
			    wp->w_p_rl ? (col <= 0) :
# endif
				(col >= W_WIDTH(wp) - 1))
			&& (*mb_char2cells)(mb_c) == 2)
		{
		    c = '>';
		    mb_c = c;
		    mb_utf8 = FALSE;
		    mb_l = 1;
		    multi_attr = hl_attr(HLF_AT);
		    /* Put pointer back so that the character will be
		     * displayed at the start of the next line. */
		    --ptr;
		}
		else if (*ptr != NUL)
		    ptr += mb_l - 1;

		/* If a double-width char doesn't fit at the left side display
		 * a '<' in the first column. */
		if (n_skip > 0 && mb_l > 1)
		{
		    extra[0] = '<';
		    p_extra = extra;
		    n_extra = 1;
		    c_extra = NUL;
		    c = ' ';
		    if (area_attr == 0 && search_attr == 0)
		    {
			n_attr = n_extra + 1;
			extra_attr = hl_attr(HLF_AT);
			saved_attr2 = char_attr; /* save current attr */
		    }
		    mb_c = c;
		    mb_utf8 = FALSE;
		    mb_l = 1;
		}

	    }
#endif
	    ++ptr;

	    /* 'list' : change char 160 to lcs_nbsp. */
	    if (wp->w_p_list && c == 160 && lcs_nbsp)
	    {
		c = lcs_nbsp;
		if (area_attr == 0 && search_attr == 0)
		{
		    n_attr = 1;
		    extra_attr = hl_attr(HLF_8);
		    saved_attr2 = char_attr; /* save current attr */
		}
#ifdef FEAT_MBYTE
		mb_c = c;
		if (enc_utf8 && (*mb_char2len)(c) > 1)
		{
		    mb_utf8 = TRUE;
		    u8c_c1 = u8c_c2 = 0;
		}
		else
		    mb_utf8 = FALSE;
#endif
	    }

	    if (extra_check)
	    {
#ifdef FEAT_SYN_HL
		/* Get syntax attribute, unless still at the start of the line
		 * (double-wide char that doesn't fit). */
		if (has_syntax && (v = (long)(ptr - line)) > 0)
		{
		    /* Get the syntax attribute for the character.  If there
		     * is an error, disable syntax highlighting. */
		    save_did_emsg = did_emsg;
		    did_emsg = FALSE;

		    syntax_attr = get_syntax_attr((colnr_T)v - 1);

		    if (did_emsg)
			syntax_clear(wp->w_buffer);
		    else
			did_emsg = save_did_emsg;

		    /* Need to get the line again, a multi-line regexp may
		     * have made it invalid. */
		    line = ml_get_buf(wp->w_buffer, lnum, FALSE);
		    ptr = line + v;

		    if (area_attr == 0 && search_attr == 0)
			char_attr = syntax_attr;
		}
#endif
#ifdef FEAT_LINEBREAK
		/*
		 * Found last space before word: check for line break
		 */
		if (wp->w_p_lbr && vim_isbreak(c) && !vim_isbreak(*ptr)
						      && !wp->w_p_list)
		{
		    n_extra = win_lbr_chartabsize(wp, ptr - (
# ifdef FEAT_MBYTE
				has_mbyte ? mb_l :
# endif
				1), (colnr_T)vcol, NULL) - 1;
		    c_extra = ' ';
		    if (vim_iswhite(c))
			c = ' ';
		}
#endif

		if (trailcol != MAXCOL && ptr > line + trailcol && c == ' ')
		{
		    c = lcs_trail;
		    if (area_attr == 0 && search_attr == 0)
		    {
			n_attr = 1;
			extra_attr = hl_attr(HLF_8);
			saved_attr2 = char_attr; /* save current attr */
		    }
#ifdef FEAT_MBYTE
		    mb_c = c;
		    if (enc_utf8 && (*mb_char2len)(c) > 1)
		    {
			mb_utf8 = TRUE;
			u8c_c1 = u8c_c2 = 0;
		    }
		    else
			mb_utf8 = FALSE;
#endif
		}
	    }

	    /*
	     * Handling of non-printable characters.
	     */
	    if (!(chartab[c] & CT_PRINT_CHAR))
	    {
		/*
		 * when getting a character from the file, we may have to
		 * turn it into something else on the way to putting it
		 * into "ScreenLines".
		 */
		if (c == TAB && (!wp->w_p_list || lcs_tab1))
		{
		    /* tab amount depends on current column */
		    n_extra = (int)wp->w_buffer->b_p_ts
				   - vcol % (int)wp->w_buffer->b_p_ts - 1;
#ifdef FEAT_MBYTE
		    mb_utf8 = FALSE;	/* don't draw as UTF-8 */
#endif
		    if (wp->w_p_list)
		    {
			c = lcs_tab1;
			c_extra = lcs_tab2;
			n_attr = n_extra + 1;
			extra_attr = hl_attr(HLF_8);
			saved_attr2 = char_attr; /* save current attr */
#ifdef FEAT_MBYTE
			mb_c = c;
			if (enc_utf8 && (*mb_char2len)(c) > 1)
			{
			    mb_utf8 = TRUE;
			    u8c_c1 = u8c_c2 = 0;
			}
#endif
		    }
		    else
		    {
			c_extra = ' ';
			c = ' ';
		    }
		}
		else if (c == NUL && wp->w_p_list && lcs_eol_one > 0)
		{
#if defined(FEAT_DIFF) || defined(LINE_ATTR)
		    /* For a diff line the highlighting continues after the
		     * "$". */
		    if (
# ifdef FEAT_DIFF
			    diff_hlf == (enum hlf_value)0
#  ifdef LINE_ATTR
			    &&
#  endif
# endif
# ifdef LINE_ATTR
			    line_attr == 0
# endif
		       )
#endif
		    {
#ifdef FEAT_VIRTUALEDIT
			/* In virtualedit, visual selections may extend
			 * beyond end of line. */
			if (area_highlighting && virtual_active()
				&& tocol != MAXCOL && vcol < tocol)
			    n_extra = 0;
			else
#endif
			{
			    p_extra = at_end_str;
			    n_extra = 1;
			    c_extra = NUL;
			}
		    }
		    c = lcs_eol;
		    lcs_eol_one = -1;
		    --ptr;	    /* put it back at the NUL */
		    if (area_attr == 0 && search_attr == 0)
		    {
			extra_attr = hl_attr(HLF_AT);
			n_attr = 1;
		    }
#ifdef FEAT_MBYTE
		    mb_c = c;
		    if (enc_utf8 && (*mb_char2len)(c) > 1)
		    {
			mb_utf8 = TRUE;
			u8c_c1 = u8c_c2 = 0;
		    }
		    else
			mb_utf8 = FALSE;	/* don't draw as UTF-8 */
#endif
		}
		else if (c != NUL)
		{
		    p_extra = transchar(c);
#ifdef FEAT_RIGHTLEFT
		    if ((dy_flags & DY_UHEX) && wp->w_p_rl)
			rl_mirror(p_extra);	/* reverse "<12>" */
#endif
		    n_extra = byte2cells(c) - 1;
		    c_extra = NUL;
		    c = *p_extra++;
		    if (area_attr == 0 && search_attr == 0)
		    {
			n_attr = n_extra + 1;
			extra_attr = hl_attr(HLF_8);
			saved_attr2 = char_attr; /* save current attr */
		    }
#ifdef FEAT_MBYTE
		    mb_utf8 = FALSE;	/* don't draw as UTF-8 */
#endif
		}
#ifdef FEAT_VIRTUALEDIT
		else if (VIsual_active
			 && (VIsual_mode == Ctrl_V
			     || VIsual_mode == 'v')
			 && virtual_active()
			 && tocol != MAXCOL
			 && vcol < tocol
			 && (
# ifdef FEAT_RIGHTLEFT
			    wp->w_p_rl ? (col >= 0) :
# endif
			    (col < W_WIDTH(wp))))
		{
		    c = ' ';
		    --ptr;	    /* put it back at the NUL */
		}
#endif
#if defined(FEAT_DIFF) || defined(LINE_ATTR)
		else if ((
# ifdef FEAT_DIFF
			    diff_hlf != (enum hlf_value)0
#  ifdef LINE_ATTR
			    ||
#  endif
# endif
# ifdef LINE_ATTR
			    line_attr != 0
# endif
			) && (
# ifdef FEAT_RIGHTLEFT
			    wp->w_p_rl ? (col >= 0) :
# endif
			    (col < W_WIDTH(wp))))
		{
		    /* Highlight until the right side of the window */
		    c = ' ';
		    --ptr;	    /* put it back at the NUL */
# ifdef FEAT_DIFF
		    if (diff_hlf == HLF_TXD)
		    {
			diff_hlf = HLF_CHD;
			if (attr == 0 || char_attr != attr)
			    char_attr = hl_attr(diff_hlf);
		    }
# endif
		}
#endif
	    }
	}

	/* Don't override visual selection highlighting. */
	if (n_attr > 0
		&& draw_state == WL_LINE
		&& (area_attr == 0 || char_attr != area_attr)
		&& (search_attr == 0 || char_attr != search_attr))
	    char_attr = extra_attr;

#if defined(FEAT_XIM) && (defined(FEAT_GUI_GTK) || defined(FEAT_GUI_KDE))
	/* XIM don't send preedit_start and preedit_end, but they send
	 * preedit_changed and commit.  Thus Vim can't set "im_is_active", use
	 * im_is_preediting() here. */
	if (xic != NULL
		&& lnum == curwin->w_cursor.lnum
		&& (State & INSERT)
		&& !p_imdisable
		&& im_is_preediting()
		&& draw_state == WL_LINE)
	{
	    colnr_T tcol;

	    if (preedit_end_col == MAXCOL)
		getvcol(curwin, &(curwin->w_cursor), &tcol, NULL, NULL);
	    else
		tcol = preedit_end_col;
	    if ((long)preedit_start_col <= vcol && vcol < (long)tcol)
	    {
		if (feedback_old_attr < 0)
		{
		    feedback_col = 0;
		    feedback_old_attr = char_attr;
		}
		char_attr = im_get_feedback_attr(feedback_col);
		if (char_attr < 0)
		    char_attr = feedback_old_attr;
		feedback_col++;
	    }
	    else if (feedback_old_attr >= 0)
	    {
		char_attr = feedback_old_attr;
		feedback_old_attr = -1;
		feedback_col = 0;
	    }
	}
#endif
	/*
	 * Handle the case where we are in column 0 but not on the first
	 * character of the line and the user wants us to show us a
	 * special character (via 'listchars' option "precedes:<char>".
	 */
	if (lcs_prec_todo != NUL
		&& (wp->w_p_wrap ? wp->w_skipcol > 0 : wp->w_leftcol > 0)
#ifdef FEAT_DIFF
		&& filler_todo <= 0
#endif
		&& draw_state > WL_NR
		&& c != NUL)
	{
	    c = lcs_prec;
	    lcs_prec_todo = NUL;
#ifdef FEAT_MBYTE
	    mb_c = c;
	    if (enc_utf8 && (*mb_char2len)(c) > 1)
	    {
		mb_utf8 = TRUE;
		u8c_c1 = u8c_c2 = 0;
	    }
	    else
		mb_utf8 = FALSE;	/* don't draw as UTF-8 */
#endif
	    if ((area_attr == 0 || char_attr != area_attr)
		    && (search_attr == 0 || char_attr != search_attr))
	    {
		saved_attr3 = char_attr; /* save current attr */
		char_attr = hl_attr(HLF_AT); /* later copied to char_attr */
		n_attr3 = 1;
	    }
	}

	/*
	 * At end of the text line.
	 */
	if (c == NUL)
	{
	    /* invert at least one char, used for Visual and empty line or
	     * highlight match at end of line. If it's beyond the last
	     * char on the screen, just overwrite that one (tricky!)  Not
	     * needed when a '$' was displayed for 'list'. */
	    if (lcs_eol == lcs_eol_one
		    && ((area_attr != 0 && vcol == fromcol)
#ifdef FEAT_SEARCH_EXTRA
			/* highlight 'hlsearch' match at end of line */
			|| ptr - 1 == search_hl.startp
			|| ptr - 1 == match_hl.startp
#endif
		       ))
	    {
		int n = 0;

#ifdef FEAT_RIGHTLEFT
		if (wp->w_p_rl)
		{
		    if (col < 0)
			n = 1;
		}
		else
#endif
		{
		    if (col >= W_WIDTH(wp))
			n = -1;
		}
		if (n != 0)
		{
		    /* At the window boundary, highlight the last character
		     * instead (better than nothing). */
		    off += n;
		    col += n;
		}
		else
		{
		    /* Add a blank character to highlight. */
		    ScreenLines[off] = ' ';
#ifdef FEAT_MBYTE
		    if (enc_utf8)
			ScreenLinesUC[off] = 0;
#endif
		}
#ifdef FEAT_SEARCH_EXTRA
		if (area_attr == 0)
		{
		    if (ptr - 1 == match_hl.startp)
			char_attr = match_hl.attr;
		    else
			char_attr = search_hl.attr;
		}
#endif
		ScreenAttrs[off] = char_attr;
#ifdef FEAT_RIGHTLEFT
		if (wp->w_p_rl)
		    --col;
		else
#endif
		    ++col;
	    }

	    SCREEN_LINE(screen_row, W_WINCOL(wp), col, (int)W_WIDTH(wp),
								  wp->w_p_rl);
	    row++;

	    /*
	     * Update w_cline_height and w_cline_folded if the cursor line was
	     * updated (saves a call to plines() later).
	     */
	    if (wp == curwin && lnum == curwin->w_cursor.lnum)
	    {
		curwin->w_cline_row = startrow;
		curwin->w_cline_height = row - startrow;
#ifdef FEAT_FOLDING
		curwin->w_cline_folded = FALSE;
#endif
		curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW);
	    }

	    break;
	}

	/* line continues beyond line end */
	if (lcs_ext
		&& !wp->w_p_wrap
#ifdef FEAT_DIFF
		&& filler_todo <= 0
#endif
		&& (
#ifdef FEAT_RIGHTLEFT
		    wp->w_p_rl ? col == 0 :
#endif
		    col == W_WIDTH(wp) - 1)
		&& (*ptr != NUL
		    || (wp->w_p_list && lcs_eol != NUL && p_extra != at_end_str)
		    || (n_extra && (c_extra != NUL || *p_extra != NUL))))
	{
	    c = lcs_ext;
	    char_attr = hl_attr(HLF_AT);
#ifdef FEAT_MBYTE
	    mb_c = c;
	    if (enc_utf8 && (*mb_char2len)(c) > 1)
	    {
		mb_utf8 = TRUE;
		u8c_c1 = u8c_c2 = 0;
	    }
	    else
		mb_utf8 = FALSE;
#endif
	}

	/*
	 * Store character to be displayed.
	 * Skip characters that are left of the screen for 'nowrap'.
	 */
	vcol_prev = vcol;
	if (draw_state < WL_LINE || n_skip <= 0)
	{
	    /*
	     * Store the character.
	     */
#if defined(FEAT_RIGHTLEFT) && defined(FEAT_MBYTE)
	    if (has_mbyte && wp->w_p_rl && (*mb_char2cells)(mb_c) > 1)
	    {
		/* A double-wide character is: put first halve in left cell. */
		--off;
		--col;
	    }
#endif
	    ScreenLines[off] = c;
#ifdef FEAT_MBYTE
	    if (enc_dbcs == DBCS_JPNU)
		ScreenLines2[off] = mb_c & 0xff;
	    else if (enc_utf8)
	    {
		if (mb_utf8)
		{
		    ScreenLinesUC[off] = mb_c;
		    ScreenLinesC1[off] = u8c_c1;
		    ScreenLinesC2[off] = u8c_c2;
		}
		else
		    ScreenLinesUC[off] = 0;
	    }
	    if (multi_attr)
	    {
		ScreenAttrs[off] = multi_attr;
		multi_attr = 0;
	    }
	    else
#endif
		ScreenAttrs[off] = char_attr;

#ifdef FEAT_MBYTE
	    if (has_mbyte && (*mb_char2cells)(mb_c) > 1)
	    {
		/* Need to fill two screen columns. */
		++off;
		++col;
		if (enc_utf8)
		    /* UTF-8: Put a 0 in the second screen char. */
		    ScreenLines[off] = 0;
		else
		    /* DBCS: Put second byte in the second screen char. */
		    ScreenLines[off] = mb_c & 0xff;
		++vcol;
		/* When "tocol" is halfway a character, set it to the end of
		 * the character, otherwise highlighting won't stop. */
		if (tocol == vcol)
		    ++tocol;
#ifdef FEAT_RIGHTLEFT
		if (wp->w_p_rl)
		{
		    /* now it's time to backup one cell */
		    --off;
		    --col;
		}
#endif
	    }
#endif
#ifdef FEAT_RIGHTLEFT
	    if (wp->w_p_rl)
	    {
		--off;
		--col;
	    }
	    else
#endif
	    {
		++off;
		++col;
	    }
	}
	else
	    --n_skip;

	/* Only advance the "vcol" when after the 'number' column. */
	if (draw_state >= WL_SBR
#ifdef FEAT_DIFF
		&& filler_todo <= 0
#endif
		)
	    ++vcol;

	/* restore attributes after "predeces" in 'listchars' */
	if (draw_state > WL_NR && n_attr3 > 0 && --n_attr3 == 0)
	    char_attr = saved_attr3;

	/* restore attributes after last 'listchars' or 'number' char */
	if (n_attr > 0 && draw_state == WL_LINE && --n_attr == 0)
	    char_attr = saved_attr2;

	/*
	 * At end of screen line and there is more to come: Display the line
	 * so far.  If there is no more to display it is catched above.
	 */
	if ((
#ifdef FEAT_RIGHTLEFT
	    wp->w_p_rl ? (col < 0) :
#endif
				    (col >= W_WIDTH(wp)))
		&& (*ptr != NUL
#ifdef FEAT_DIFF
		    || filler_todo > 0
#endif
		    || (wp->w_p_list && lcs_eol != NUL && p_extra != at_end_str)
		    || (n_extra != 0 && (c_extra != NUL || *p_extra != NUL)))
		)
	{
	    SCREEN_LINE(screen_row, W_WINCOL(wp), col, (int)W_WIDTH(wp),
								  wp->w_p_rl);
	    ++row;
	    ++screen_row;

	    /* When not wrapping and finished diff lines, or when displayed
	     * '$' and highlighting until last column, break here. */
	    if ((!wp->w_p_wrap
#ifdef FEAT_DIFF
		    && filler_todo <= 0
#endif
		    ) || lcs_eol_one == -1)
		break;

	    /* When the window is too narrow draw all "@" lines. */
	    if (draw_state != WL_LINE
#ifdef FEAT_DIFF
		    && filler_todo <= 0
#endif
		    )
	    {
		win_draw_end(wp, '@', ' ', row, wp->w_height, HLF_AT);
#ifdef FEAT_VERTSPLIT
		draw_vsep_win(wp, row);
#endif
		row = endrow;
	    }

	    /* When line got too long for screen break here. */
	    if (row == endrow)
	    {
		++row;
		break;
	    }

	    if (screen_cur_row == screen_row - 1
#ifdef FEAT_DIFF
		     && filler_todo <= 0
#endif
		     && W_WIDTH(wp) == Columns)
	    {
		/* Remember that the line wraps, used for modeless copy. */
		LineWraps[screen_row - 1] = TRUE;

		/*
		 * Special trick to make copy/paste of wrapped lines work with
		 * xterm/screen: write an extra character beyond the end of
		 * the line. This will work with all terminal types
		 * (regardless of the xn,am settings).
		 * Only do this on a fast tty.
		 * Only do this if the cursor is on the current line
		 * (something has been written in it).
		 * Don't do this for the GUI.
		 * Don't do this for double-width characters.
		 * Don't do this for a window not at the right screen border.
		 */
		if (p_tf
#ifdef FEAT_GUI
			 && !gui.in_use
#endif
#ifdef FEAT_MBYTE
			 && !(has_mbyte
			     && ((*mb_off2cells)(LineOffset[screen_row]) == 2
				 || (*mb_off2cells)(LineOffset[screen_row - 1]
							+ (int)Columns - 2) == 2))
#endif
		   )
		{
		    /* First make sure we are at the end of the screen line,
		     * then output the same character again to let the
		     * terminal know about the wrap.  If the terminal doesn't
		     * auto-wrap, we overwrite the character. */
		    if (screen_cur_col != W_WIDTH(wp))
			screen_char(LineOffset[screen_row - 1]
						      + (unsigned)Columns - 1,
					  screen_row - 1, (int)(Columns - 1));

#ifdef FEAT_MBYTE
		    /* When there is a multi-byte character, just output a
		     * space to keep it simple. */
		    if (has_mbyte && mb_off2cells(LineOffset[screen_row - 1]
						+ (unsigned)Columns - 1) != 1)
			out_char(' ');
		    else
#endif
			out_char(ScreenLines[LineOffset[screen_row - 1]
							    + (Columns - 1)]);
		    /* force a redraw of the first char on the next line */
		    ScreenAttrs[LineOffset[screen_row]] = (sattr_T)-1;
		    screen_start();	/* don't know where cursor is now */
		}
	    }

	    col = 0;
	    off = (unsigned)(current_ScreenLine - ScreenLines);
#ifdef FEAT_RIGHTLEFT
	    if (wp->w_p_rl)
	    {
		col = W_WIDTH(wp) - 1;	/* col is not used if breaking! */
		off += col;
	    }
#endif

	    /* reset the drawing state for the start of a wrapped line */
	    draw_state = WL_START;
	    saved_n_extra = n_extra;
	    saved_p_extra = p_extra;
	    saved_c_extra = c_extra;
	    saved_char_attr = char_attr;
	    n_extra = 0;
	    lcs_prec_todo = lcs_prec;
#ifdef FEAT_LINEBREAK
# ifdef FEAT_DIFF
	    if (filler_todo <= 0)
# endif
		need_showbreak = TRUE;
#endif
#ifdef FEAT_DIFF
	    --filler_todo;
	    /* When the filler lines are actually below the last line of the
	     * file, don't draw the line itself, break here. */
	    if (filler_todo == 0 && wp->w_botfill)
		break;
#endif
	}

    }	/* for every character in the line */

    return row;
}

/*
 * Check whether the given character needs redrawing:
 * - the (first byte of the) character is different
 * - the attributes are different
 * - the character is multi-byte and the next byte is different
 */
    static int
char_needs_redraw(off_from, off_to, cols)
    int		off_from;
    int		off_to;
    int		cols;
{
    if (cols > 0
	    && ((ScreenLines[off_from] != ScreenLines[off_to]
		    || ScreenAttrs[off_from] != ScreenAttrs[off_to])

#ifdef FEAT_MBYTE
		|| (enc_dbcs != 0
		    && MB_BYTE2LEN(ScreenLines[off_from]) > 1
		    && (enc_dbcs == DBCS_JPNU && ScreenLines[off_from] == 0x8e
			? ScreenLines2[off_from] != ScreenLines2[off_to]
			: (cols > 1 && ScreenLines[off_from + 1]
						 != ScreenLines[off_to + 1])))
		|| (enc_utf8
		    && (ScreenLinesUC[off_from] != ScreenLinesUC[off_to]
			|| (ScreenLinesUC[off_from] != 0
			    && (ScreenLinesC1[off_from]
						      != ScreenLinesC1[off_to]
				|| ScreenLinesC2[off_from]
						  != ScreenLinesC2[off_to]))))
#endif
	       ))
	return TRUE;
    return FALSE;
}

/*
 * Move one "cooked" screen line to the screen, but only the characters that
 * have actually changed.  Handle insert/delete character.
 * "coloff" gives the first column on the screen for this line.
 * "endcol" gives the columns where valid characters are.
 * "clear_width" is the width of the window.  It's > 0 if the rest of the line
 * needs to be cleared, negative otherwise.
 * "rlflag" is TRUE in a rightleft window:
 *    When TRUE and "clear_width" > 0, clear columns 0 to "endcol"
 *    When FALSE and "clear_width" > 0, clear columns "endcol" to "clear_width"
 */
    static void
screen_line(row, coloff, endcol, clear_width
#ifdef FEAT_RIGHTLEFT
				    , rlflag
#endif
						)
    int	    row;
    int	    coloff;
    int	    endcol;
    int	    clear_width;
#ifdef FEAT_RIGHTLEFT
    int	    rlflag;
#endif
{
    unsigned	    off_from;
    unsigned	    off_to;
    int		    col = 0;
#if defined(FEAT_GUI) || defined(UNIX) || defined(FEAT_VERTSPLIT)
    int		    hl;
#endif
    int		    force = FALSE;	/* force update rest of the line */
    int		    redraw_this		/* bool: does character need redraw? */
#ifdef FEAT_GUI
				= TRUE	/* For GUI when while-loop empty */
#endif
				;
    int		    redraw_next;	/* redraw_this for next character */
#ifdef FEAT_MBYTE
    int		    clear_next = FALSE;
    int		    char_cells;		/* 1: normal char */
					/* 2: occupies two display cells */
# define CHAR_CELLS char_cells
#else
# define CHAR_CELLS 1
#endif

# ifdef FEAT_CLIPBOARD
    clip_may_clear_selection(row, row);
# endif

    off_from = (unsigned)(current_ScreenLine - ScreenLines);
    off_to = LineOffset[row] + coloff;

#ifdef FEAT_RIGHTLEFT
    if (rlflag)
    {
	/* Clear rest first, because it's left of the text. */
	if (clear_width > 0)
	{
	    while (col <= endcol && ScreenLines[off_to] == ' '
		    && ScreenAttrs[off_to] == 0
# ifdef FEAT_MBYTE
				  && (!enc_utf8 || ScreenLinesUC[off_to] == 0)
# endif
						  )
	    {
		++off_to;
		++col;
	    }
	    if (col <= endcol)
		screen_fill(row, row + 1, col + coloff,
					    endcol + coloff + 1, ' ', ' ', 0);
	}
	col = endcol + 1;
	off_to = LineOffset[row] + col + coloff;
	off_from += col;
	endcol = (clear_width > 0 ? clear_width : -clear_width);
    }
#endif /* FEAT_RIGHTLEFT */

    redraw_next = char_needs_redraw(off_from, off_to, endcol - col);

    while (col < endcol)
    {
#ifdef FEAT_MBYTE
	if (has_mbyte && (col + 1 < endcol))
	    char_cells = (*mb_off2cells)(off_from);
	else
	    char_cells = 1;
#endif

	redraw_this = redraw_next;
	redraw_next = force || char_needs_redraw(off_from + CHAR_CELLS,
			      off_to + CHAR_CELLS, endcol - col - CHAR_CELLS);

#ifdef FEAT_GUI
	/* If the next character was bold, then redraw the current character to
	 * remove any pixels that might have spilt over into us.  This only
	 * happens in the GUI.
	 */
	if (redraw_next && gui.in_use)
	{
	    hl = ScreenAttrs[off_to + CHAR_CELLS];
	    if (hl > HL_ALL || (hl & HL_BOLD))
		redraw_this = TRUE;
	}
#endif

	if (redraw_this)
	{
	    /*
	     * Special handling when 'xs' termcap flag set (hpterm):
	     * Attributes for characters are stored at the position where the
	     * cursor is when writing the highlighting code.  The
	     * start-highlighting code must be written with the cursor on the
	     * first highlighted character.  The stop-highlighting code must
	     * be written with the cursor just after the last highlighted
	     * character.
	     * Overwriting a character doesn't remove it's highlighting.  Need
	     * to clear the rest of the line, and force redrawing it
	     * completely.
	     */
	    if (       p_wiv
		    && !force
#ifdef FEAT_GUI
		    && !gui.in_use
#endif
		    && ScreenAttrs[off_to] != 0
		    && ScreenAttrs[off_from] != ScreenAttrs[off_to])
	    {
		/*
		 * Need to remove highlighting attributes here.
		 */
		windgoto(row, col + coloff);
		out_str(T_CE);		/* clear rest of this screen line */
		screen_start();		/* don't know where cursor is now */
		force = TRUE;		/* force redraw of rest of the line */
		redraw_next = TRUE;	/* or else next char would miss out */

		/*
		 * If the previous character was highlighted, need to stop
		 * highlighting at this character.
		 */
		if (col + coloff > 0 && ScreenAttrs[off_to - 1] != 0)
		{
		    screen_attr = ScreenAttrs[off_to - 1];
		    term_windgoto(row, col + coloff);
		    screen_stop_highlight();
		}
		else
		    screen_attr = 0;	    /* highlighting has stopped */
	    }
#ifdef FEAT_MBYTE
	    if (enc_dbcs != 0)
	    {
		/* Check if overwriting a double-byte with a single-byte or
		 * the other way around requires another character to be
		 * redrawn.  For UTF-8 this isn't needed, because comparing
		 * ScreenLinesUC[] is sufficient. */
		if (char_cells == 1
			&& col + 1 < endcol
			&& (*mb_off2cells)(off_to) > 1)
		{
		    /* Writing a single-cell character over a double-cell
		     * character: need to redraw the next cell. */
		    ScreenLines[off_to + 1] = 0;
		    redraw_next = TRUE;
		}
		else if (char_cells == 2
			&& col + 2 < endcol
			&& (*mb_off2cells)(off_to) == 1
			&& (*mb_off2cells)(off_to + 1) > 1)
		{
		    /* Writing the second half of a double-cell character over
		     * a double-cell character: need to redraw the second
		     * cell. */
		    ScreenLines[off_to + 2] = 0;
		    redraw_next = TRUE;
		}

		if (enc_dbcs == DBCS_JPNU)
		    ScreenLines2[off_to] = ScreenLines2[off_from];
	    }
	    /* When writing a single-width character over a double-width
	     * character and at the end of the redrawn text, need to clear out
	     * the right halve of the old character.
	     * Also required when writing the right halve of a double-width
	     * char over the left halve of an existing one. */
	    if (has_mbyte && col + char_cells == endcol
		    && ((char_cells == 1
			    && (*mb_off2cells)(off_to) > 1)
			|| (char_cells == 2
			    && (*mb_off2cells)(off_to) == 1
			    && (*mb_off2cells)(off_to + 1) > 1)))
		clear_next = TRUE;
#endif

	    ScreenLines[off_to] = ScreenLines[off_from];
#ifdef FEAT_MBYTE
	    if (enc_utf8)
	    {
		ScreenLinesUC[off_to] = ScreenLinesUC[off_from];
		if (ScreenLinesUC[off_from] != 0)
		{
		    ScreenLinesC1[off_to] = ScreenLinesC1[off_from];
		    ScreenLinesC2[off_to] = ScreenLinesC2[off_from];
		}
	    }
	    if (char_cells == 2)
		ScreenLines[off_to + 1] = ScreenLines[off_from + 1];
#endif

#if defined(FEAT_GUI) || defined(UNIX)
	    /* The bold trick makes a single row of pixels appear in the next
	     * character.  When a bold character is removed, the next
	     * character should be redrawn too.  This happens for our own GUI
	     * and for some xterms. */
	    if (
# ifdef FEAT_GUI
		    gui.in_use
# endif
# if defined(FEAT_GUI) && defined(UNIX)
		    ||
# endif
# ifdef UNIX
		    term_is_xterm
# endif
		    )
	    {
		hl = ScreenAttrs[off_to];
		if (hl > HL_ALL || (hl & HL_BOLD))
		    redraw_next = TRUE;
	    }
#endif
	    ScreenAttrs[off_to] = ScreenAttrs[off_from];
#ifdef FEAT_MBYTE
	    if (enc_dbcs != 0 && char_cells == 2)
	    {
		/* just a hack: It makes two bytes of DBCS have same attr */
		ScreenAttrs[off_to + 1] = ScreenAttrs[off_from];
		screen_char_2(off_to, row, col + coloff);
	    }
	    else
#endif
		screen_char(off_to, row, col + coloff);
	}
	else if (  p_wiv
#ifdef FEAT_GUI
		&& !gui.in_use
#endif
		&& col + coloff > 0)
	{
	    if (ScreenAttrs[off_to] == ScreenAttrs[off_to - 1])
	    {
		/*
		 * Don't output stop-highlight when moving the cursor, it will
		 * stop the highlighting when it should continue.
		 */
		screen_attr = 0;
	    }
	    else if (screen_attr != 0)
		screen_stop_highlight();
	}

	off_to += CHAR_CELLS;
	off_from += CHAR_CELLS;
	col += CHAR_CELLS;
    }

#ifdef FEAT_MBYTE
    if (clear_next)
    {
	/* Clear the second half of a double-wide character of which the left
	 * half was overwritten with a single-wide character. */
	ScreenLines[off_to] = ' ';
	if (enc_utf8)
	    ScreenLinesUC[off_to] = 0;
	screen_char(off_to, row, col + coloff);
    }
#endif

    if (clear_width > 0
#ifdef FEAT_RIGHTLEFT
		    && !rlflag
#endif
				   )
    {
#ifdef FEAT_GUI
	int startCol = col;
#endif

	/* blank out the rest of the line */
	while (col < clear_width && ScreenLines[off_to] == ' '
						  && ScreenAttrs[off_to] == 0
#ifdef FEAT_MBYTE
				  && (!enc_utf8 || ScreenLinesUC[off_to] == 0)
#endif
						  )
	{
	    ++off_to;
	    ++col;
	}
	if (col < clear_width)
	{
#ifdef FEAT_GUI
	    /*
	     * In the GUI, clearing the rest of the line may leave pixels
	     * behind if the first character cleared was bold.  Some bold
	     * fonts spill over the left.  In this case we redraw the previous
	     * character too.  If we didn't skip any blanks above, then we
	     * only redraw if the character wasn't already redrawn anyway.
	     */
	    if (gui.in_use && (col > startCol || !redraw_this)
# ifdef FEAT_MBYTE
		    && enc_dbcs == 0
# endif
	       )
	    {
		hl = ScreenAttrs[off_to];
		if (hl > HL_ALL || (hl & HL_BOLD))
		    screen_char(off_to - 1, row, col + coloff - 1);
	    }
#endif
	    screen_fill(row, row + 1, col + coloff, clear_width + coloff,
								 ' ', ' ', 0);
#ifdef FEAT_VERTSPLIT
	    off_to += clear_width - col;
	    col = clear_width;
#endif
	}
    }

    if (clear_width > 0)
    {
#ifdef FEAT_VERTSPLIT
	/* For a window that's left of another, draw the separator char. */
	if (col + coloff < Columns)
	{
	    int c;

	    c = fillchar_vsep(&hl);
	    if (ScreenLines[off_to] != c
# ifdef FEAT_MBYTE
		    || (enc_utf8
			      && ScreenLinesUC[off_to] != (c >= 0x80 ? c : 0))
# endif
		    || ScreenAttrs[off_to] != hl)
	    {
		ScreenLines[off_to] = c;
		ScreenAttrs[off_to] = hl;
# ifdef FEAT_MBYTE
		if (enc_utf8)
		{
		    if (c >= 0x80)
		    {
			ScreenLinesUC[off_to] = c;
			ScreenLinesC1[off_to] = 0;
			ScreenLinesC2[off_to] = 0;
		    }
		    else
			ScreenLinesUC[off_to] = 0;
		}
# endif
		screen_char(off_to, row, col + coloff);
	    }
	}
	else
#endif
	    LineWraps[row] = FALSE;
    }
}

#ifdef FEAT_RIGHTLEFT
/*
 * Mirror text "str" for right-lieft displaying.
 */
    static void
rl_mirror(str)
    char_u	*str;
{
    char_u	*p1, *p2;
    int		t;

    for (p1 = str, p2 = str + STRLEN(str) - 1; p1 < p2; ++p1, --p2)
    {
	t = *p1;
	*p1 = *p2;
	*p2 = t;
    }
}
#endif

#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
 * mark all status lines for redraw; used after first :cd
 */
    void
status_redraw_all()
{
    win_T	*wp;

    for (wp = firstwin; wp; wp = wp->w_next)
	if (wp->w_status_height)
	{
	    wp->w_redr_status = TRUE;
	    redraw_later(VALID);
	}
}

/*
 * mark all status lines of the current buffer for redraw
 */
    void
status_redraw_curbuf()
{
    win_T	*wp;

    for (wp = firstwin; wp; wp = wp->w_next)
	if (wp->w_status_height != 0 && wp->w_buffer == curbuf)
	{
	    wp->w_redr_status = TRUE;
	    redraw_later(VALID);
	}
}

/*
 * Redraw all status lines that need to be redrawn.
 */
    void
redraw_statuslines()
{
    win_T	*wp;

    for (wp = firstwin; wp; wp = wp->w_next)
	if (wp->w_redr_status)
	    win_redr_status(wp);
}
#endif

#if (defined(FEAT_WILDMENU) && defined(FEAT_VERTSPLIT)) || defined(PROTO)
/*
 * Redraw all status lines at the bottom of frame "frp".
 */
    void
win_redraw_last_status(frp)
    frame_T	*frp;
{
    if (frp->fr_layout == FR_LEAF)
	frp->fr_win->w_redr_status = TRUE;
    else if (frp->fr_layout == FR_ROW)
    {
	for (frp = frp->fr_child; frp != NULL; frp = frp->fr_next)
	    win_redraw_last_status(frp);
    }
    else /* frp->fr_layout == FR_COL */
    {
	frp = frp->fr_child;
	while (frp->fr_next != NULL)
	    frp = frp->fr_next;
	win_redraw_last_status(frp);
    }
}
#endif

#ifdef FEAT_VERTSPLIT
/*
 * Draw the verticap separator right of window "wp" starting with line "row".
 */
    static void
draw_vsep_win(wp, row)
    win_T	*wp;
    int		row;
{
    int		hl;
    int		c;

    if (wp->w_vsep_width)
    {
	/* draw the vertical separator right of this window */
	c = fillchar_vsep(&hl);
	screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + wp->w_height,
		W_ENDCOL(wp), W_ENDCOL(wp) + 1,
		c, ' ', hl);
    }
}
#endif

#ifdef FEAT_WILDMENU
static int status_match_len __ARGS((expand_T *xp, char_u *s));

/*
 * Get the lenght of an item as it will be shown in the status line.
 */
    static int
status_match_len(xp, s)
    expand_T	*xp;
    char_u	*s;
{
    int	len = 0;

#ifdef FEAT_MENU
    int emenu = (xp->xp_context == EXPAND_MENUS
	    || xp->xp_context == EXPAND_MENUNAMES);

    /* Check for menu separators - replace with '|'. */
    if (emenu && menu_is_separator(s))
	return 1;
#endif

    while (*s != NUL)
    {
	/* Don't display backslashes used for escaping, they look ugly. */
	if (rem_backslash(s)
#ifdef FEAT_MENU
		|| (emenu && (s[0] == '\\' && s[1] != NUL))
#endif
		)
	    ++s;
#ifdef FEAT_MBYTE
	if (has_mbyte)
	{
	    len += ptr2cells(s);
	    s += (*mb_ptr2len_check)(s);
	}
	else
#endif
	    len += ptr2cells(s++);

    }

    return len;
}

/*
 * Show wildchar matches in the status line.
 * Show at least the "match" item.
 * We start at item 'first_match' in the list and show all matches that fit.
 *
 * If inversion is possible we use it. Else '=' characters are used.
 */
    void
win_redr_status_matches(xp, num_matches, matches, match, showtail)
    expand_T	*xp;
    int		num_matches;
    char_u	**matches;	/* list of matches */
    int		match;
    int		showtail;
{
#define L_MATCH(m) (showtail ? sm_gettail(matches[m]) : matches[m])
    int		row;
    char_u	*buf;
    int		len;
    int		clen;		/* lenght in screen cells */
    int		fillchar;
    int		attr;
    int		i;
    int		highlight = TRUE;
    char_u	*selstart = NULL;
    int		selstart_col = 0;
    char_u	*selend = NULL;
    static int	first_match = 0;
    int		add_left = FALSE;
    char_u	*s;
#ifdef FEAT_MENU
    int		emenu;
#endif
#if defined(FEAT_MBYTE) || defined(FEAT_MENU)
    int		l;
#endif

    if (matches == NULL)	/* interrupted completion? */
	return;

    buf = alloc((unsigned)Columns + 1);
    if (buf == NULL)
	return;

    if (match == -1)	/* don't show match but original text */
    {
	match = 0;
	highlight = FALSE;
    }
    /* count 1 for the ending ">" */
    clen = status_match_len(xp, L_MATCH(match)) + 3;
    if (match == 0)
	first_match = 0;
    else if (match < first_match)
    {
	/* jumping left, as far as we can go */
	first_match = match;
	add_left = TRUE;
    }
    else
    {
	/* check if match fits on the screen */
	for (i = first_match; i < match; ++i)
	    clen += status_match_len(xp, L_MATCH(i)) + 2;
	if (first_match > 0)
	    clen += 2;
	/* jumping right, put match at the left */
	if ((long)clen > Columns)
	{
	    first_match = match;
	    /* if showing the last match, we can add some on the left */
	    clen = 2;
	    for (i = match; i < num_matches; ++i)
	    {
		clen += status_match_len(xp, L_MATCH(i)) + 2;
		if ((long)clen >= Columns)
		    break;
	    }
	    if (i == num_matches)
		add_left = TRUE;
	}
    }
    if (add_left)
	while (first_match > 0)
	{
	    clen += status_match_len(xp, L_MATCH(first_match - 1)) + 2;
	    if ((long)clen >= Columns)
		break;
	    --first_match;
	}

    fillchar = fillchar_status(&attr, TRUE);

    if (first_match == 0)
    {
	*buf = NUL;
	len = 0;
    }
    else
    {
	STRCPY(buf, "< ");
	len = 2;
    }
    clen = len;

    i = first_match;
    while ((long)(clen + status_match_len(xp, L_MATCH(i)) + 2) < Columns)
    {
	if (i == match)
	{
	    selstart = buf + len;
	    selstart_col = clen;
	}

	s = L_MATCH(i);
	/* Check for menu separators - replace with '|' */
#ifdef FEAT_MENU
	emenu = (xp->xp_context == EXPAND_MENUS
		|| xp->xp_context == EXPAND_MENUNAMES);
	if (emenu && menu_is_separator(s))
	{
	    STRCPY(buf + len, transchar('|'));
	    l = (int)STRLEN(buf + len);
	    len += l;
	    clen += l;
	}
	else
#endif
	    for ( ; *s != NUL; ++s)
	{
	    /* Don't display backslashes used for escaping, they look ugly. */
	    if (rem_backslash(s)
#ifdef FEAT_MENU
		    || (emenu
			  && (s[0] == '\t' || (s[0] == '\\' && s[1] != NUL)))
#endif
		    )
		++s;
	    clen += ptr2cells(s);
#ifdef FEAT_MBYTE
	    if (has_mbyte && (l = (*mb_ptr2len_check)(s)) > 1)
	    {
		STRNCPY(buf + len, s, l);
		s += l - 1;
		len += l;
	    }
	    else
#endif
	    {
		STRCPY(buf + len, transchar_byte(*s));
		len += (int)STRLEN(buf + len);
	    }
	}
	if (i == match)
	    selend = buf + len;

	*(buf + len++) = ' ';
	*(buf + len++) = ' ';
	clen += 2;
	if (++i == num_matches)
		break;
    }

    if (i != num_matches)
    {
	*(buf + len++) = '>';
	++clen;
    }

    buf[len] = NUL;

    row = cmdline_row - 1;
    if (row >= 0)
    {
	if (wild_menu_showing == 0)
	{
	    if (msg_scrolled > 0)
	    {
		/* Put the wildmenu just above the command line.  If there is
		 * no room, scroll the screen one line up. */
		if (cmdline_row == Rows - 1)
		{
		    screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL);
		    ++msg_scrolled;
		}
		else
		{
		    ++cmdline_row;
		    ++row;
		}
		wild_menu_showing = WM_SCROLLED;
	    }
	    else
	    {
		/* Create status line if needed by setting 'laststatus' to 2.
		 * Set 'winminheight' to zero to avoid that the window is
		 * resized. */
		if (lastwin->w_status_height == 0)
		{
		    save_p_ls = p_ls;
		    save_p_wmh = p_wmh;
		    p_ls = 2;
		    p_wmh = 0;
		    last_status(FALSE);
		}
		wild_menu_showing = WM_SHOWN;
	    }
	}

	screen_puts(buf, row, 0, attr);
	if (selstart != NULL && highlight)
	{
	    *selend = NUL;
	    screen_puts(selstart, row, selstart_col, hl_attr(HLF_WM));
	}

	screen_fill(row, row + 1, clen, (int)Columns, fillchar, fillchar, attr);
    }

#ifdef FEAT_VERTSPLIT
    win_redraw_last_status(topframe);
#else
    lastwin->w_redr_status = TRUE;
#endif
    vim_free(buf);
}
#endif

#if defined(FEAT_WINDOWS) || defined(PROTO)
/*
 * Redraw the status line of window wp.
 *
 * If inversion is possible we use it. Else '=' characters are used.
 */
    void
win_redr_status(wp)
    win_T	*wp;
{
    int		row;
    char_u	*p;
    int		len;
    int		fillchar;
    int		attr;
    int		this_ru_col;

    wp->w_redr_status = FALSE;
    if (wp->w_status_height == 0)
    {
	/* no status line, can only be last window */
	redraw_cmdline = TRUE;
    }
    else if (!redrawing())
    {
	/* Don't redraw right now, do it later. */
	wp->w_redr_status = TRUE;
    }
#ifdef FEAT_STL_OPT
    else if (*p_stl)
    {
	/* redraw custom status line */
	win_redr_custom(wp, FALSE);
    }
#endif
    else
    {
	fillchar = fillchar_status(&attr, wp == curwin);

	if (buf_spname(wp->w_buffer) != NULL)
	    STRCPY(NameBuff, buf_spname(wp->w_buffer));
	else
	    home_replace(wp->w_buffer, wp->w_buffer->b_fname, NameBuff,
							      MAXPATHL, TRUE);
	trans_characters(NameBuff, MAXPATHL);
	p = NameBuff;
	len = (int)STRLEN(p);

	if (wp->w_buffer->b_help
#ifdef FEAT_QUICKFIX
		|| wp->w_p_pvw
#endif
		|| bufIsChanged(wp->w_buffer)
		|| wp->w_buffer->b_p_ro)
	    *(p + len++) = ' ';
	if (wp->w_buffer->b_help)
	{
	    STRCPY(p + len, _("[help]"));
	    len += (int)STRLEN(p + len);
	}
#ifdef FEAT_QUICKFIX
	if (wp->w_p_pvw)
	{
	    STRCPY(p + len, _("[Preview]"));
	    len += (int)STRLEN(p + len);
	}
#endif
	if (bufIsChanged(wp->w_buffer))
	{
	    STRCPY(p + len, "[+]");
	    len += 3;
	}
	if (wp->w_buffer->b_p_ro)
	{
	    STRCPY(p + len, "[RO]");
	    len += 4;
	}

#ifndef FEAT_VERTSPLIT
	this_ru_col = ru_col;
	if (this_ru_col < (Columns + 1) / 2)
	    this_ru_col = (Columns + 1) / 2;
#else
	this_ru_col = ru_col - (Columns - W_WIDTH(wp));
	if (this_ru_col < (W_WIDTH(wp) + 1) / 2)
	    this_ru_col = (W_WIDTH(wp) + 1) / 2;
	if (this_ru_col <= 1)
	{
	    p = (char_u *)"<";		/* No room for file name! */
	    len = 1;
	}
	else
#endif
#ifdef FEAT_MBYTE
	    if (has_mbyte)
	    {
		int	clen = 0, i;

		/* Count total number of display cells. */
		for (i = 0; p[i] != NUL; i += (*mb_ptr2len_check)(p + i))
		    clen += (*mb_ptr2cells)(p + i);
		/* Find first character that will fit.
		 * Going from start to end is much faster for DBCS. */
		for (i = 0; p[i] != NUL && clen >= this_ru_col - 1;
					      i += (*mb_ptr2len_check)(p + i))
		    clen -= (*mb_ptr2cells)(p + i);
		len = clen;
		if (i > 0)
		{
		    p = p + i - 1;
		    *p = '<';
		    ++len;
		}

	    }
	    else
#endif
	    if (len > this_ru_col - 1)
	    {
		p += len - (this_ru_col - 1);
		*p = '<';
		len = this_ru_col - 1;
	    }

	row = W_WINROW(wp) + wp->w_height;
	screen_puts(p, row, W_WINCOL(wp), attr);
	screen_fill(row, row + 1, len + W_WINCOL(wp),
			this_ru_col + W_WINCOL(wp), fillchar, fillchar, attr);

	if (get_keymap_str(wp, NameBuff, MAXPATHL)
		&& (int)(this_ru_col - len) > (int)(STRLEN(NameBuff) + 1))
	    screen_puts(NameBuff, row, (int)(this_ru_col - STRLEN(NameBuff)
						   - 1 + W_WINCOL(wp)), attr);

#ifdef FEAT_CMDL_INFO
	win_redr_ruler(wp, TRUE);
#endif
    }

#ifdef FEAT_VERTSPLIT
    /*
     * May need to draw the character below the vertical separator.
     */
    if (wp->w_vsep_width != 0 && wp->w_status_height != 0 && redrawing())
    {
	if (stl_connected(wp))
	    fillchar = fillchar_status(&attr, wp == curwin);
	else
	    fillchar = fillchar_vsep(&attr);
	screen_putchar(fillchar, W_WINROW(wp) + wp->w_height, W_ENDCOL(wp),
									attr);
    }
#endif
}

# ifdef FEAT_VERTSPLIT
/*
 * Return TRUE if the status line of window "wp" is connected to the status
 * line of the window right of it.  If not, then it's a vertical separator.
 * Only call if (wp->w_vsep_width != 0).
 */
    int
stl_connected(wp)
    win_T	*wp;
{
    frame_T	*fr;

    fr = wp->w_frame;
    while (fr->fr_parent != NULL)
    {
	if (fr->fr_parent->fr_layout == FR_COL)
	{
	    if (fr->fr_next != NULL)
		break;
	}
	else
	{
	    if (fr->fr_next != NULL)
		return TRUE;
	}
	fr = fr->fr_parent;
    }
    return FALSE;
}
# endif

#endif /* FEAT_WINDOWS */

#if defined(FEAT_WINDOWS) || defined(FEAT_STL_OPT) || defined(PROTO)
/*
 * Get the value to show for the language mappings, active 'keymap'.
 */
    int
get_keymap_str(wp, buf, len)
    win_T	*wp;
    char_u	*buf;	    /* buffer for the result */
    int		len;	    /* length of buffer */
{
    char_u	*p;

    if (wp->w_buffer->b_p_iminsert != B_IMODE_LMAP)
	return FALSE;

    {
#ifdef FEAT_EVAL
	buf_T	*old_curbuf = curbuf;
	win_T	*old_curwin = curwin;
	char_u	*s;

	curbuf = wp->w_buffer;
	curwin = wp;
	STRCPY(buf, "b:keymap_name");	/* must be writable */
	++emsg_skip;
	s = p = eval_to_string(buf, NULL);
	--emsg_skip;
	curbuf = old_curbuf;
	curwin = old_curwin;
	if (p == NULL || *p == NUL)
#endif
	{
#ifdef FEAT_KEYMAP
	    if (wp->w_buffer->b_kmap_state & KEYMAP_LOADED)
		p = wp->w_buffer->b_p_keymap;
	    else
#endif
		p = (char_u *)"lang";
	}
	if ((int)(STRLEN(p) + 3) < len)
	    sprintf((char *)buf, "<%s>", p);
	else
	    buf[0] = NUL;
#ifdef FEAT_EVAL
	vim_free(s);
#endif
    }
    return buf[0] != NUL;
}
#endif

#if defined(FEAT_STL_OPT) || defined(PROTO)
/*
 * Redraw the status line or ruler of window wp.
 */
    static void
win_redr_custom(wp, Ruler)
    win_T	*wp;
    int		Ruler;
{
    int		attr;
    int		curattr;
    int		row;
    int		col = 0;
    int		maxwidth;
    int		width;
    int		n;
    int		len;
    int		fillchar;
    char_u	buf[MAXPATHL];
    char_u	*p;
    struct	stl_hlrec hl[STL_MAX_ITEM];

    /* setup environment for the task at hand */
    row = W_WINROW(wp) + wp->w_height;
    fillchar = fillchar_status(&attr, wp == curwin);
    maxwidth = W_WIDTH(wp);
    p = p_stl;
    if (Ruler)
    {
	p = p_ruf;
	/* advance past any leading group spec - implicit in ru_col */
	if (*p == '%')
	{
	    if (*++p == '-')
		p++;
	    if (atoi((char *) p))
		while (VIM_ISDIGIT(*p))
		    p++;
	    if (*p++ != '(')
		p = p_ruf;
	}
#ifdef FEAT_VERTSPLIT
	col = ru_col - (Columns - W_WIDTH(wp));
	if (col < (W_WIDTH(wp) + 1) / 2)
	    col = (W_WIDTH(wp) + 1) / 2;
#else
	col = ru_col;
	if (col > (Columns + 1) / 2)
	    col = (Columns + 1) / 2;
#endif
	maxwidth = W_WIDTH(wp) - col;
#ifdef FEAT_WINDOWS
	if (!wp->w_status_height)
#endif
	{
	    row = Rows - 1;
	    --maxwidth;	/* writing in last column may cause scrolling */
	    fillchar = ' ';
	    attr = 0;
	}
    }
    if (maxwidth <= 0)
	return;
#ifdef FEAT_VERTSPLIT
    col += W_WINCOL(wp);
#endif

    width = build_stl_str_hl(wp, buf, sizeof(buf), p, fillchar, maxwidth, hl);
    len = STRLEN(buf);

    while (width < maxwidth && len < sizeof(buf) - 1)
    {
#ifdef FEAT_MBYTE
	len += (*mb_char2bytes)(fillchar, buf + len);
#else
	buf[len++] = fillchar;
#endif
	++width;
    }
    buf[len] = NUL;

    curattr = attr;
    p = buf;
    for (n = 0; hl[n].start != NULL; n++)
    {
	len = (int)(hl[n].start - p);
	screen_puts_len(p, len, row, col, curattr);
	col += vim_strnsize(p, len);
	p = hl[n].start;

	if (hl[n].userhl == 0)
	    curattr = attr;
#ifdef FEAT_WINDOWS
	else if (wp != curwin && wp->w_status_height != 0)
	    curattr = highlight_stlnc[hl[n].userhl - 1];
#endif
	else
	    curattr = highlight_user[hl[n].userhl - 1];
    }
    screen_puts(p, row, col, curattr);
}

#endif /* FEAT_STL_OPT */

/*
 * Output a single character directly to the screen and update ScreenLines.
 */
    void
screen_putchar(c, row, col, attr)
    int	    c;
    int	    row, col;
    int	    attr;
{
#ifdef FEAT_MBYTE
    char_u	buf[MB_MAXBYTES + 1];

    buf[(*mb_char2bytes)(c, buf)] = NUL;
#else
    char_u	buf[2];

    buf[0] = c;
    buf[1] = NUL;
#endif
    screen_puts(buf, row, col, attr);
}

/*
 * Get a single character directly from ScreenLines into "bytes[]".
 * Also return its attribute in *attrp;
 */
    void
screen_getbytes(row, col, bytes, attrp)
    int	    row, col;
    char_u  *bytes;
    int	    *attrp;
{
    unsigned off;

    /* safety check */
    if (ScreenLines != NULL && row < screen_Rows && col < screen_Columns)
    {
	off = LineOffset[row] + col;
	*attrp = ScreenAttrs[off];
	bytes[0] = ScreenLines[off];
	bytes[1] = NUL;

#ifdef FEAT_MBYTE
	if (enc_utf8 && ScreenLinesUC[off] != 0)
	    bytes[utfc_char2bytes(off, bytes)] = NUL;
	else if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
	{
	    bytes[0] = ScreenLines[off];
	    bytes[1] = ScreenLines2[off];
	    bytes[2] = NUL;
	}
	else if (enc_dbcs && MB_BYTE2LEN(bytes[0]) > 1)
	{
	    bytes[1] = ScreenLines[off + 1];
	    bytes[2] = NUL;
	}
#endif
    }
}

/*
 * Put string '*text' on the screen at position 'row' and 'col', with
 * attributes 'attr', and update ScreenLines[] and ScreenAttrs[].
 * Note: only outputs within one row, message is truncated at screen boundary!
 * Note: if ScreenLines[], row and/or col is invalid, nothing is done.
 */
    void
screen_puts(text, row, col, attr)
    char_u	*text;
    int		row;
    int		col;
    int		attr;
{
    screen_puts_len(text, -1, row, col, attr);
}

/*
 * Like screen_puts(), but output "text[len]".  When "len" is -1 output up to
 * a NUL.
 */
    void
screen_puts_len(text, len, row, col, attr)
    char_u	*text;
    int		len;
    int		row;
    int		col;
    int		attr;
{
    unsigned	off;
    char_u	*ptr = text;
    int		c;
#ifdef FEAT_MBYTE
    int		mbyte_blen = 1;
    int		mbyte_cells = 1;
    int		u8c = 0;
    int		u8c_c1 = 0;
    int		u8c_c2 = 0;
    int		clear_next_cell = FALSE;
# ifdef FEAT_ARABIC
    int		prev_c = 0;		/* previous Arabic character */
    int		pc, nc, nc1, dummy;
# endif
#endif

    if (ScreenLines == NULL || row >= screen_Rows)	/* safety check */
	return;

    off = LineOffset[row] + col;
    while (*ptr != NUL && col < screen_Columns
				      && (len < 0 || (int)(ptr - text) < len))
    {
	c = *ptr;
#ifdef FEAT_MBYTE
	/* check if this is the first byte of a multibyte */
	if (has_mbyte)
	{
	    if (enc_utf8 && len > 0)
		mbyte_blen = utfc_ptr2len_check_len(ptr,
						   (int)((text + len) - ptr));
	    else
		mbyte_blen = (*mb_ptr2len_check)(ptr);
	    if (enc_dbcs == DBCS_JPNU && c == 0x8e)
		mbyte_cells = 1;
	    else if (enc_dbcs != 0)
		mbyte_cells = mbyte_blen;
	    else	/* enc_utf8 */
	    {
		if (len >= 0)
		    u8c = utfc_ptr2char_len(ptr, &u8c_c1, &u8c_c2,
						   (int)((text + len) - ptr));
		else
		    u8c = utfc_ptr2char(ptr, &u8c_c1, &u8c_c2);
		mbyte_cells = utf_char2cells(u8c);
		/* Non-BMP character: display as ? or fullwidth ?. */
		if (u8c >= 0x10000)
		{
		    u8c = (mbyte_cells == 2) ? 0xff1f : (int)'?';
		    if (attr == 0)
			attr = hl_attr(HLF_8);
		}
# ifdef FEAT_ARABIC
		if (p_arshape && !p_tbidi && ARABIC_CHAR(u8c))
		{
		    /* Do Arabic shaping. */
		    if (len >= 0 && (int)(ptr - text) + mbyte_blen >= len)
		    {
			/* Past end of string to be displayed. */
			nc = NUL;
			nc1 = NUL;
		    }
		    else
			nc = utfc_ptr2char(ptr + mbyte_blen, &nc1, &dummy);
		    pc = prev_c;
		    prev_c = u8c;
		    u8c = arabic_shape(u8c, &c, &u8c_c1, nc, nc1, pc);
		}
		else
		    prev_c = u8c;
# endif
	    }
	}
#endif

	if (ScreenLines[off] != c
#ifdef FEAT_MBYTE
		|| (mbyte_cells == 2
		    && ScreenLines[off + 1] != (enc_dbcs ? ptr[1] : 0))
		|| (enc_dbcs == DBCS_JPNU
		    && c == 0x8e
		    && ScreenLines2[off] != ptr[1])
		|| (enc_utf8
		    && mbyte_blen > 1
		    && (ScreenLinesUC[off] != u8c
			|| ScreenLinesC1[off] != u8c_c1
			|| ScreenLinesC2[off] != u8c_c2))
#endif
		|| ScreenAttrs[off] != attr
		|| exmode_active
		)
	{
#if defined(FEAT_GUI) || defined(UNIX)
	    /* The bold trick makes a single row of pixels appear in the next
	     * character.  When a bold character is removed, the next
	     * character should be redrawn too.  This happens for our own GUI
	     * and for some xterms.
	     * Force the redraw by setting the attribute to a different value
	     * than "attr", the contents of ScreenLines[] may be needed by
	     * mb_off2cells() further on.
	     * Don't do this for the last drawn character, because the next
	     * character may not be redrawn. */
	    if (
# ifdef FEAT_GUI
		    gui.in_use
# endif
# if defined(FEAT_GUI) && defined(UNIX)
		    ||
# endif
# ifdef UNIX
		    term_is_xterm
# endif
	       )
	    {
		int		n;

		n = ScreenAttrs[off];
# ifdef FEAT_MBYTE
		if (col + mbyte_cells < screen_Columns
			&& (n > HL_ALL || (n & HL_BOLD))
			&& (len < 0 ? ptr[mbyte_blen] != NUL
					     : ptr + mbyte_blen < text + len))
		    ScreenAttrs[off + mbyte_cells] = attr + 1;
# else
		if (col + 1 < screen_Columns
			&& (n > HL_ALL || (n & HL_BOLD))
			&& (len < 0 ? ptr[1] != NUL : ptr + 1 < text + len))
		    ScreenLines[off + 1] = 0;
# endif
	    }
#endif
#ifdef FEAT_MBYTE
	    /* When at the end of the text and overwriting a two-cell
	     * character with a one-cell character, need to clear the next
	     * cell.  Also when overwriting the left halve of a two-cell char
	     * with the right halve of a two-cell char.  Do this only once
	     * (mb_off2cells() may return 2 on the right halve). */
	    if (clear_next_cell)
		clear_next_cell = FALSE;
	    else if (has_mbyte
		    && (len < 0 ? ptr[mbyte_blen] == NUL
					     : ptr + mbyte_blen >= text + len)
		    && ((mbyte_cells == 1 && (*mb_off2cells)(off) > 1)
			|| (mbyte_cells == 2
			    && (*mb_off2cells)(off) == 1
			    && (*mb_off2cells)(off + 1) > 1)))
		clear_next_cell = TRUE;

	    /* Make sure we never leave a second byte of a double-byte behind,
	     * it confuses mb_off2cells(). */
	    if (enc_dbcs
		    && ((mbyte_cells == 1 && (*mb_off2cells)(off) > 1)
			|| (mbyte_cells == 2
			    && (*mb_off2cells)(off) == 1
			    && (*mb_off2cells)(off + 1) > 1)))
		ScreenLines[off + mbyte_blen] = 0;
#endif
	    ScreenLines[off] = c;
	    ScreenAttrs[off] = attr;
#ifdef FEAT_MBYTE
	    if (enc_utf8)
	    {
		if (c < 0x80 && u8c_c1 == 0 && u8c_c2 == 0)
		    ScreenLinesUC[off] = 0;
		else
		{
		    ScreenLinesUC[off] = u8c;
		    ScreenLinesC1[off] = u8c_c1;
		    ScreenLinesC2[off] = u8c_c2;
		}
		if (mbyte_cells == 2)
		{
		    ScreenLines[off + 1] = 0;
		    ScreenAttrs[off + 1] = attr;
		}
		screen_char(off, row, col);
	    }
	    else if (mbyte_cells == 2)
	    {
		ScreenLines[off + 1] = ptr[1];
		ScreenAttrs[off + 1] = attr;
		screen_char_2(off, row, col);
	    }
	    else if (enc_dbcs == DBCS_JPNU && c == 0x8e)
	    {
		ScreenLines2[off] = ptr[1];
		screen_char(off, row, col);
	    }
	    else
#endif
		screen_char(off, row, col);
	}
#ifdef FEAT_MBYTE
	if (has_mbyte)
	{
	    off += mbyte_cells;
	    col += mbyte_cells;
	    ptr += mbyte_blen;
	    if (clear_next_cell)
		ptr = (char_u *)" ";
	}
	else
#endif
	{
	    ++off;
	    ++col;
	    ++ptr;
	}
    }
}

#ifdef FEAT_SEARCH_EXTRA
/*
 * Prepare for 'searchhl' highlighting.
 */
    static void
start_search_hl()
{
    if (p_hls && !no_hlsearch)
    {
	last_pat_prog(&search_hl.rm);
	search_hl.attr = hl_attr(HLF_L);
    }
}

/*
 * Clean up for 'searchhl' highlighting.
 */
    static void
end_search_hl()
{
    if (search_hl.rm.regprog != NULL)
    {
	vim_free(search_hl.rm.regprog);
	search_hl.rm.regprog = NULL;
    }
}

/*
 * Advance to the match in window "wp" line "lnum" or past it.
 */
    static void
prepare_search_hl(wp, lnum)
    win_T	*wp;
    linenr_T	lnum;
{
    match_T	*shl;		/* points to search_hl or match_hl */
    int		n;

    /*
     * When using a multi-line pattern, start searching at the top
     * of the window or just after a closed fold.
     * Do this both for search_hl and match_hl.
     */
    shl = &search_hl;
    for (;;)
    {
	if (shl->rm.regprog != NULL
		&& shl->lnum == 0
		&& re_multiline(shl->rm.regprog))
	{
	    if (shl->first_lnum == 0)
	    {
# ifdef FEAT_FOLDING
		for (shl->first_lnum = lnum;
			   shl->first_lnum > wp->w_topline; --shl->first_lnum)
		    if (hasFoldingWin(wp, shl->first_lnum - 1,
						      NULL, NULL, TRUE, NULL))
			break;
# else
		shl->first_lnum = wp->w_topline;
# endif
	    }
	    n = 0;
	    while (shl->first_lnum < lnum && shl->rm.regprog != NULL)
	    {
		next_search_hl(wp, shl, shl->first_lnum, (colnr_T)n);
		if (shl->lnum != 0)
		{
		    shl->first_lnum = shl->lnum
				    + shl->rm.endpos[0].lnum
				    - shl->rm.startpos[0].lnum;
		    n = shl->rm.endpos[0].col;
		}
		else
		{
		    ++shl->first_lnum;
		    n = 0;
		}
	    }
	}
	if (shl == &match_hl)
	    break;
	shl = &match_hl;
    }
}

/*
 * Search for a next 'searchl' or ":match" match.
 * Uses shl->buf.
 * Sets shl->lnum and shl->rm contents.
 * Note: Assumes a previous match is always before "lnum", unless
 * shl->lnum is zero.
 * Careful: Any pointers for buffer lines will become invalid.
 */
    static void
next_search_hl(win, shl, lnum, mincol)
    win_T	*win;
    match_T	*shl;		/* points to search_hl or match_hl */
    linenr_T	lnum;
    colnr_T	mincol;		/* minimal column for a match */
{
    linenr_T	l;
    colnr_T	matchcol;
    long	nmatched;

    if (shl->lnum != 0)
    {
	/* Check for three situations:
	 * 1. If the "lnum" is below a previous match, start a new search.
	 * 2. If the previous match includes "mincol", use it.
	 * 3. Continue after the previous match.
	 */
	l = shl->lnum + shl->rm.endpos[0].lnum - shl->rm.startpos[0].lnum;
	if (lnum > l)
	    shl->lnum = 0;
	else if (lnum < l || shl->rm.endpos[0].col > mincol)
	    return;
    }

    /*
     * Repeat searching for a match until one is found that includes "mincol"
     * or none is found in this line.
     */
    called_emsg = FALSE;
    for (;;)
    {
	/* Three situations:
	 * 1. No useful previous match: search from start of line.
	 * 2. Not Vi compatible or empty match: continue at next character.
	 *    Break the loop if this is beyond the end of the line.
	 * 3. Vi compatible searching: continue at end of previous match.
	 */
	if (shl->lnum == 0)
	    matchcol = 0;
	else if (vim_strchr(p_cpo, CPO_SEARCH) == NULL
		|| (shl->rm.endpos[0].lnum == 0
		    && shl->rm.endpos[0].col == shl->rm.startpos[0].col))
	{
	    matchcol = shl->rm.startpos[0].col + 1;
	    if (ml_get_buf(shl->buf, lnum, FALSE)[matchcol - 1] == NUL)
	    {
		shl->lnum = 0;
		break;
	    }
	}
	else
	    matchcol = shl->rm.endpos[0].col;

	shl->lnum = lnum;
	nmatched = vim_regexec_multi(&shl->rm, win, shl->buf, lnum, matchcol);
	if (called_emsg)
	{
	    /* Error while handling regexp: stop using this regexp. */
	    vim_free(shl->rm.regprog);
	    shl->rm.regprog = NULL;
	    no_hlsearch = TRUE;
	    break;
	}
	if (nmatched == 0)
	{
	    shl->lnum = 0;		/* no match found */
	    break;
	}
	if (shl->rm.startpos[0].lnum > 0
		|| shl->rm.startpos[0].col >= mincol
		|| nmatched > 1
		|| shl->rm.endpos[0].col > mincol)
	{
	    shl->lnum += shl->rm.startpos[0].lnum;
	    break;			/* useful match found */
	}
    }
}
#endif

      static void
screen_start_highlight(attr)
      int	attr;
{
    attrentry_T *aep = NULL;

    screen_attr = attr;
    if (full_screen
#ifdef WIN3264
		    && termcap_active
#endif
				       )
    {
#ifdef FEAT_GUI
	if (gui.in_use)
	{
	    char	buf[20];

	    sprintf(buf, IF_EB("\033|%dh", ESC_STR "|%dh"), attr);		/* internal GUI code */
	    OUT_STR(buf);
	}
	else
#endif
	{
	    if (attr > HL_ALL)				/* special HL attr. */
	    {
		if (t_colors > 1)
		    aep = syn_cterm_attr2entry(attr);
		else
		    aep = syn_term_attr2entry(attr);
		if (aep == NULL)	    /* did ":syntax clear" */
		    attr = 0;
		else
		    attr = aep->ae_attr;
	    }
	    if ((attr & HL_BOLD) && T_MD != NULL)	/* bold */
		out_str(T_MD);
	    if ((attr & HL_STANDOUT) && T_SO != NULL)	/* standout */
		out_str(T_SO);
	    if ((attr & HL_UNDERLINE) && T_US != NULL)	/* underline */
		out_str(T_US);
	    if ((attr & HL_ITALIC) && T_CZH != NULL)	/* italic */
		out_str(T_CZH);
	    if ((attr & HL_INVERSE) && T_MR != NULL)	/* inverse (reverse) */
		out_str(T_MR);

	    /*
	     * Output the color or start string after bold etc., in case the
	     * bold etc. override the color setting.
	     */
	    if (aep != NULL)
	    {
		if (t_colors > 1)
		{
		    if (aep->ae_u.cterm.fg_color)
			term_fg_color(aep->ae_u.cterm.fg_color - 1);
		    if (aep->ae_u.cterm.bg_color)
			term_bg_color(aep->ae_u.cterm.bg_color - 1);
		}
		else
		{
		    if (aep->ae_u.term.start != NULL)
			out_str(aep->ae_u.term.start);
		}
	    }
	}
    }
}

      void
screen_stop_highlight()
{
    int	    do_ME = FALSE;	    /* output T_ME code */

    if (screen_attr != 0
#ifdef WIN3264
			&& termcap_active
#endif
					   )
    {
#ifdef FEAT_GUI
	if (gui.in_use)
	{
	    char	buf[20];

	    /* use internal GUI code */
	    sprintf(buf, IF_EB("\033|%dH", ESC_STR "|%dH"), screen_attr);
	    OUT_STR(buf);
	}
	else
#endif
	{
	    if (screen_attr > HL_ALL)			/* special HL attr. */
	    {
		attrentry_T *aep;

		if (t_colors > 1)
		{
		    /*
		     * Assume that t_me restores the original colors!
		     */
		    aep = syn_cterm_attr2entry(screen_attr);
		    if (aep != NULL && (aep->ae_u.cterm.fg_color
						 || aep->ae_u.cterm.bg_color))
			do_ME = TRUE;
		}
		else
		{
		    aep = syn_term_attr2entry(screen_attr);
		    if (aep != NULL && aep->ae_u.term.stop != NULL)
		    {
			if (STRCMP(aep->ae_u.term.stop, T_ME) == 0)
			    do_ME = TRUE;
			else
			    out_str(aep->ae_u.term.stop);
		    }
		}
		if (aep == NULL)	    /* did ":syntax clear" */
		    screen_attr = 0;
		else
		    screen_attr = aep->ae_attr;
	    }

	    /*
	     * Often all ending-codes are equal to T_ME.  Avoid outputting the
	     * same sequence several times.
	     */
	    if (screen_attr & HL_STANDOUT)
	    {
		if (STRCMP(T_SE, T_ME) == 0)
		    do_ME = TRUE;
		else
		    out_str(T_SE);
	    }
	    if (screen_attr & HL_UNDERLINE)
	    {
		if (STRCMP(T_UE, T_ME) == 0)
		    do_ME = TRUE;
		else
		    out_str(T_UE);
	    }
	    if (screen_attr & HL_ITALIC)
	    {
		if (STRCMP(T_CZR, T_ME) == 0)
		    do_ME = TRUE;
		else
		    out_str(T_CZR);
	    }
	    if (do_ME || (screen_attr & (HL_BOLD | HL_INVERSE)))
		out_str(T_ME);

	    if (t_colors > 1)
	    {
		/* set Normal cterm colors */
		if (cterm_normal_fg_color != 0)
		    term_fg_color(cterm_normal_fg_color - 1);
		if (cterm_normal_bg_color != 0)
		    term_bg_color(cterm_normal_bg_color - 1);
		if (cterm_normal_fg_bold)
		    out_str(T_MD);
	    }
	}
    }
    screen_attr = 0;
}

/*
 * Reset the colors for a cterm.  Used when leaving Vim.
 * The machine specific code may override this again.
 */
    void
reset_cterm_colors()
{
    if (t_colors > 1)
    {
	/* set Normal cterm colors */
	if (cterm_normal_fg_color > 0 || cterm_normal_bg_color > 0)
	{
	    out_str(T_OP);
	    screen_attr = -1;
	}
	if (cterm_normal_fg_bold)
	{
	    out_str(T_ME);
	    screen_attr = -1;
	}
    }
}

/*
 * Put character ScreenLines["off"] on the screen at position "row" and "col",
 * using the attributes from ScreenAttrs["off"].
 */
    static void
screen_char(off, row, col)
    unsigned	off;
    int		row;
    int		col;
{
    int		attr;

    /* Check for illegal values, just in case (could happen just after
     * resizing). */
    if (row >= screen_Rows || col >= screen_Columns)
	return;

    /* Outputting the last character on the screen may scrollup the screen.
     * Don't to it!  Mark the character invalid (update it when scrolled up) */
    if (row == screen_Rows - 1 && col == screen_Columns - 1
#ifdef FEAT_RIGHTLEFT
	    /* account for first command-line character in rightleft mode */
	    && !cmdmsg_rl
#endif
       )
    {
	ScreenAttrs[off] = (sattr_T)-1;
	return;
    }

    /*
     * Stop highlighting first, so it's easier to move the cursor.
     */
#if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT)
    if (screen_char_attr != 0)
	attr = screen_char_attr;
    else
#endif
	attr = ScreenAttrs[off];
    if (screen_attr != attr)
	screen_stop_highlight();

    windgoto(row, col);

    if (screen_attr != attr)
	screen_start_highlight(attr);

#ifdef FEAT_MBYTE
    if (enc_utf8 && ScreenLinesUC[off] != 0)
    {
	char_u	    buf[MB_MAXBYTES + 1];

	/* Convert UTF-8 character to bytes and write it. */

	buf[utfc_char2bytes(off, buf)] = NUL;

	out_str(buf);
	if (utf_char2cells(ScreenLinesUC[off]) > 1)
	    ++screen_cur_col;
    }
    else
#endif
    {
#ifdef FEAT_MBYTE
	out_flush_check();
#endif
	out_char(ScreenLines[off]);
#ifdef FEAT_MBYTE
	/* double-byte character in single-width cell */
	if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
	    out_char(ScreenLines2[off]);
#endif
    }

    screen_cur_col++;
}

#ifdef FEAT_MBYTE

/*
 * Used for enc_dbcs only: Put one double-wide character at ScreenLines["off"]
 * on the screen at position 'row' and 'col'.
 * The attributes of the first byte is used for all.  This is required to
 * output the two bytes of a double-byte character with nothing in between.
 */
    static void
screen_char_2(off, row, col)
    unsigned	off;
    int		row;
    int		col;
{
    /* Check for illegal values (could be wrong when screen was resized). */
    if (off + 1 >= (unsigned)(screen_Rows * screen_Columns))
	return;

    /* Outputting the last character on the screen may scrollup the screen.
     * Don't to it!  Mark the character invalid (update it when scrolled up) */
    if (row == screen_Rows - 1 && col >= screen_Columns - 2)
    {
	ScreenAttrs[off] = (sattr_T)-1;
	return;
    }

    /* Output the first byte normally (positions the cursor), then write the
     * second byte directly. */
    screen_char(off, row, col);
    out_char(ScreenLines[off + 1]);
    ++screen_cur_col;
}
#endif

#if defined(FEAT_CLIPBOARD) || defined(FEAT_VERTSPLIT) || defined(PROTO)
/*
 * Draw a rectangle of the screen, inverted when "invert" is TRUE.
 * This uses the contents of ScreenLines[] and doesn't change it.
 */
    void
screen_draw_rectangle(row, col, height, width, invert)
    int		row;
    int		col;
    int		height;
    int		width;
    int		invert;
{
    int		r, c;
    int		off;

    if (invert)
	screen_char_attr = HL_INVERSE;
    for (r = row; r < row + height; ++r)
    {
	off = LineOffset[r];
	for (c = col; c < col + width; ++c)
	{
#ifdef FEAT_MBYTE
	    if (enc_dbcs != 0 && dbcs_off2cells(off + c) > 1)
	    {
		screen_char_2(off + c, r, c);
		++c;
	    }
	    else
#endif
	    {
		screen_char(off + c, r, c);
#ifdef FEAT_MBYTE
		if (utf_off2cells(off + c) > 1)
		    ++c;
#endif
	    }
	}
    }
    screen_char_attr = 0;
}
#endif

#ifdef FEAT_VERTSPLIT
/*
 * Redraw the characters for a vertically split window.
 */
    static void
redraw_block(row, end, wp)
    int		row;
    int		end;
    win_T	*wp;
{
    int		col;
    int		width;

# ifdef FEAT_CLIPBOARD
    clip_may_clear_selection(row, end - 1);
# endif

    if (wp == NULL)
    {
	col = 0;
	width = Columns;
    }
    else
    {
	col = wp->w_wincol;
	width = wp->w_width;
    }
    screen_draw_rectangle(row, col, end - row, width, FALSE);
}
#endif

/*
 * Fill the screen from 'start_row' to 'end_row', from 'start_col' to 'end_col'
 * with character 'c1' in first column followed by 'c2' in the other columns.
 * Use attributes 'attr'.
 */
    void
screen_fill(start_row, end_row, start_col, end_col, c1, c2, attr)
    int	    start_row, end_row;
    int	    start_col, end_col;
    int	    c1, c2;
    int	    attr;
{
    int		    row;
    int		    col;
    int		    off;
    int		    end_off;
    int		    did_delete;
    int		    c;
    int		    norm_term;
#if defined(FEAT_GUI) || defined(UNIX)
    int		    force_next = FALSE;
#endif

    if (end_row > screen_Rows)		/* safety check */
	end_row = screen_Rows;
    if (end_col > screen_Columns)	/* safety check */
	end_col = screen_Columns;
    if (ScreenLines == NULL
	    || start_row >= end_row
	    || start_col >= end_col)	/* nothing to do */
	return;

    /* it's a "normal" terminal when not in a GUI or cterm */
    norm_term = (
#ifdef FEAT_GUI
	    !gui.in_use &&
#endif
			    t_colors <= 1);
    for (row = start_row; row < end_row; ++row)
    {
	/*
	 * Try to use delete-line termcap code, when no attributes or in a
	 * "normal" terminal, where a bold/italic space is just a
	 * space.
	 */
	did_delete = FALSE;
	if (c2 == ' '
		&& end_col == Columns
		&& can_clear(T_CE)
		&& (attr == 0
		    || (norm_term
			&& attr <= HL_ALL
			&& ((attr & ~(HL_BOLD | HL_ITALIC)) == 0))))
	{
	    /*
	     * check if we really need to clear something
	     */
	    col = start_col;
	    if (c1 != ' ')			/* don't clear first char */
		++col;

	    off = LineOffset[row] + col;
	    end_off = LineOffset[row] + end_col;

	    /* skip blanks (used often, keep it fast!) */
#ifdef FEAT_MBYTE
	    if (enc_utf8)
		while (off < end_off && ScreenLines[off] == ' '
			  && ScreenAttrs[off] == 0 && ScreenLinesUC[off] == 0)
		    ++off;
	    else
#endif
		while (off < end_off && ScreenLines[off] == ' '
						     && ScreenAttrs[off] == 0)
		    ++off;
	    if (off < end_off)		/* something to be cleared */
	    {
		col = off - LineOffset[row];
		screen_stop_highlight();
		term_windgoto(row, col);/* clear rest of this screen line */
		out_str(T_CE);
		screen_start();		/* don't know where cursor is now */
		col = end_col - col;
		while (col--)		/* clear chars in ScreenLines */
		{
		    ScreenLines[off] = ' ';
#ifdef FEAT_MBYTE
		    if (enc_utf8)
			ScreenLinesUC[off] = 0;
#endif
		    ScreenAttrs[off] = 0;
		    ++off;
		}
	    }
	    did_delete = TRUE;		/* the chars are cleared now */
	}

	off = LineOffset[row] + start_col;
	c = c1;
	for (col = start_col; col < end_col; ++col)
	{
	    if (ScreenLines[off] != c
#ifdef FEAT_MBYTE
		    || (enc_utf8 && ScreenLinesUC[off] != (c >= 0x80 ? c : 0))
#endif
		    || ScreenAttrs[off] != attr
#if defined(FEAT_GUI) || defined(UNIX)
		    || force_next
#endif
		    )
	    {
#if defined(FEAT_GUI) || defined(UNIX)
		/* The bold trick may make a single row of pixels appear in
		 * the next character.  When a bold character is removed, the
		 * next character should be redrawn too.  This happens for our
		 * own GUI and for some xterms.  */
		if (
# ifdef FEAT_GUI
			gui.in_use
# endif
# if defined(FEAT_GUI) && defined(UNIX)
			||
# endif
# ifdef UNIX
			term_is_xterm
# endif
		   )
		{
		    if (ScreenLines[off] != ' '
			    && (ScreenAttrs[off] > HL_ALL
				|| ScreenAttrs[off] & HL_BOLD))
			force_next = TRUE;
		    else
			force_next = FALSE;
		}
#endif
		ScreenLines[off] = c;
#ifdef FEAT_MBYTE
		if (enc_utf8)
		{
		    if (c >= 0x80)
		    {
			ScreenLinesUC[off] = c;
			ScreenLinesC1[off] = 0;
			ScreenLinesC2[off] = 0;
		    }
		    else
			ScreenLinesUC[off] = 0;
		}
#endif
		ScreenAttrs[off] = attr;
		if (!did_delete || c != ' ')
		    screen_char(off, row, col);
	    }
	    ++off;
	    if (col == start_col)
	    {
		if (did_delete)
		    break;
		c = c2;
	    }
	}
	if (end_col == Columns)
	    LineWraps[row] = FALSE;
	if (row == Rows - 1)		/* overwritten the command line */
	{
	    redraw_cmdline = TRUE;
	    if (c1 == ' ' && c2 == ' ')
		clear_cmdline = FALSE;	/* command line has been cleared */
	}
    }
}

/*
 * Check if there should be a delay.  Used before clearing or redrawing the
 * screen or the command line.
 */
    void
check_for_delay(check_msg_scroll)
    int	    check_msg_scroll;
{
    if ((emsg_on_display || (check_msg_scroll && msg_scroll))
	    && !did_wait_return
	    && emsg_silent == 0)
    {
	out_flush();
	ui_delay(1000L, TRUE);
	emsg_on_display = FALSE;
	if (check_msg_scroll)
	    msg_scroll = FALSE;
    }
}

/*
 * screen_valid -  allocate screen buffers if size changed
 *   If "clear" is TRUE: clear screen if it has been resized.
 *	Returns TRUE if there is a valid screen to write to.
 *	Returns FALSE when starting up and screen not initialized yet.
 */
    int
screen_valid(clear)
    int	    clear;
{
    screenalloc(clear);	    /* allocate screen buffers if size changed */
    return (ScreenLines != NULL);
}

/*
 * Resize the shell to Rows and Columns.
 * Allocate ScreenLines[] and associated items.
 *
 * There may be some time between setting Rows and Columns and (re)allocating
 * ScreenLines[].  This happens when starting up and when (manually) changing
 * the shell size.  Always use screen_Rows and screen_Columns to access items
 * in ScreenLines[].  Use Rows and Columns for positioning text etc. where the
 * final size of the shell is needed.
 */
    void
screenalloc(clear)
    int	    clear;
{
    int		    new_row, old_row;
#ifdef FEAT_GUI
    int		    old_Rows;
#endif
    win_T	    *wp;
    int		    outofmem = FALSE;
    int		    len;
    schar_T	    *new_ScreenLines;
#ifdef FEAT_MBYTE
    u8char_T	    *new_ScreenLinesUC = NULL;
    u8char_T	    *new_ScreenLinesC1 = NULL;
    u8char_T	    *new_ScreenLinesC2 = NULL;
    schar_T	    *new_ScreenLines2 = NULL;
#endif
    sattr_T	    *new_ScreenAttrs;
    unsigned	    *new_LineOffset;
    char_u	    *new_LineWraps;
    static int	    entered = FALSE;		/* avoid recursiveness */

    /*
     * Allocation of the screen buffers is done only when the size changes and
     * when Rows and Columns have been set and we have started doing full
     * screen stuff.
     */
    if ((ScreenLines != NULL
		&& Rows == screen_Rows
		&& Columns == screen_Columns
#ifdef FEAT_MBYTE
		&& enc_utf8 == (ScreenLinesUC != NULL)
		&& (enc_dbcs == DBCS_JPNU) == (ScreenLines2 != NULL)
#endif
		)
	    || Rows == 0
	    || Columns == 0
	    || (!full_screen && ScreenLines == NULL))
	return;

    /*
     * It's possible that we produce an out-of-memory message below, which
     * will cause this function to be called again.  To break the loop, just
     * return here.
     */
    if (entered)
	return;
    entered = TRUE;

    win_new_shellsize();    /* fit the windows in the new sized shell */

#ifdef FEAT_GUI_BEOS
    vim_lock_screen();  /* be safe, put it here */
#endif

    comp_col();		/* recompute columns for shown command and ruler */

    /*
     * We're changing the size of the screen.
     * - Allocate new arrays for ScreenLines and ScreenAttrs.
     * - Move lines from the old arrays into the new arrays, clear extra
     *	 lines (unless the screen is going to be cleared).
     * - Free the old arrays.
     *
     * If anything fails, make ScreenLines NULL, so we don't do anything!
     * Continuing with the old ScreenLines may result in a crash, because the
     * size is wrong.
     */
#ifdef FEAT_WINDOWS
    for (wp = firstwin; wp; wp = wp->w_next)
	win_free_lsize(wp);
#else
	win_free_lsize(curwin);
#endif

    new_ScreenLines = (schar_T *)lalloc((long_u)(
			      (Rows + 1) * Columns * sizeof(schar_T)), FALSE);
#ifdef FEAT_MBYTE
    if (enc_utf8)
    {
	new_ScreenLinesUC = (u8char_T *)lalloc((long_u)(
			     (Rows + 1) * Columns * sizeof(u8char_T)), FALSE);
	new_ScreenLinesC1 = (u8char_T *)lalloc((long_u)(
			     (Rows + 1) * Columns * sizeof(u8char_T)), FALSE);
	new_ScreenLinesC2 = (u8char_T *)lalloc((long_u)(
			     (Rows + 1) * Columns * sizeof(u8char_T)), FALSE);
    }
    if (enc_dbcs == DBCS_JPNU)
	new_ScreenLines2 = (schar_T *)lalloc((long_u)(
			     (Rows + 1) * Columns * sizeof(schar_T)), FALSE);
#endif
    new_ScreenAttrs = (sattr_T *)lalloc((long_u)(
			      (Rows + 1) * Columns * sizeof(sattr_T)), FALSE);
    new_LineOffset = (unsigned *)lalloc((long_u)(
					 Rows * sizeof(unsigned)), FALSE);
    new_LineWraps = (char_u *)lalloc((long_u)(Rows * sizeof(char_u)), FALSE);

    FOR_ALL_WINDOWS(wp)
    {
	if (win_alloc_lines(wp) == FAIL)
	{
	    outofmem = TRUE;
#ifdef FEAT_WINDOWS
	    break;
#endif
	}
    }

    if (new_ScreenLines == NULL
#ifdef FEAT_MBYTE
	    || (enc_utf8 && (new_ScreenLinesUC == NULL
		   || new_ScreenLinesC1 == NULL || new_ScreenLinesC2 == NULL))
	    || (enc_dbcs == DBCS_JPNU && new_ScreenLines2 == NULL)
#endif
	    || new_ScreenAttrs == NULL
	    || new_LineOffset == NULL
	    || new_LineWraps == NULL
	    || outofmem)
    {
	do_outofmem_msg((long_u)((Rows + 1) * Columns));    /* guess the size */
	vim_free(new_ScreenLines);
	new_ScreenLines = NULL;
#ifdef FEAT_MBYTE
	vim_free(new_ScreenLinesUC);
	new_ScreenLinesUC = NULL;
	vim_free(new_ScreenLinesC1);
	new_ScreenLinesC1 = NULL;
	vim_free(new_ScreenLinesC2);
	new_ScreenLinesC2 = NULL;
	vim_free(new_ScreenLines2);
	new_ScreenLines2 = NULL;
#endif
	vim_free(new_ScreenAttrs);
	new_ScreenAttrs = NULL;
	vim_free(new_LineOffset);
	new_LineOffset = NULL;
	vim_free(new_LineWraps);
	new_LineWraps = NULL;
    }
    else
    {
	for (new_row = 0; new_row < Rows; ++new_row)
	{
	    new_LineOffset[new_row] = new_row * Columns;
	    new_LineWraps[new_row] = FALSE;

	    /*
	     * If the screen is not going to be cleared, copy as much as
	     * possible from the old screen to the new one and clear the rest
	     * (used when resizing the window at the "--more--" prompt or when
	     * executing an external command, for the GUI).
	     */
	    if (!clear)
	    {
		(void)vim_memset(new_ScreenLines + new_row * Columns,
				      ' ', (size_t)Columns * sizeof(schar_T));
#ifdef FEAT_MBYTE
		if (enc_utf8)
		{
		    (void)vim_memset(new_ScreenLinesUC + new_row * Columns,
				       0, (size_t)Columns * sizeof(u8char_T));
		    (void)vim_memset(new_ScreenLinesC1 + new_row * Columns,
				       0, (size_t)Columns * sizeof(u8char_T));
		    (void)vim_memset(new_ScreenLinesC2 + new_row * Columns,
				       0, (size_t)Columns * sizeof(u8char_T));
		}
		if (enc_dbcs == DBCS_JPNU)
		    (void)vim_memset(new_ScreenLines2 + new_row * Columns,
				       0, (size_t)Columns * sizeof(schar_T));
#endif
		(void)vim_memset(new_ScreenAttrs + new_row * Columns,
					0, (size_t)Columns * sizeof(sattr_T));
		old_row = new_row + (screen_Rows - Rows);
		if (old_row >= 0)
		{
		    if (screen_Columns < Columns)
			len = screen_Columns;
		    else
			len = Columns;
		    mch_memmove(new_ScreenLines + new_LineOffset[new_row],
			    ScreenLines + LineOffset[old_row],
			    (size_t)len * sizeof(schar_T));
#ifdef FEAT_MBYTE
		    if (enc_utf8 && ScreenLinesUC != NULL)
		    {
			mch_memmove(new_ScreenLinesUC + new_LineOffset[new_row],
				ScreenLinesUC + LineOffset[old_row],
				(size_t)len * sizeof(u8char_T));
			mch_memmove(new_ScreenLinesC1 + new_LineOffset[new_row],
				ScreenLinesC1 + LineOffset[old_row],
				(size_t)len * sizeof(u8char_T));
			mch_memmove(new_ScreenLinesC2 + new_LineOffset[new_row],
				ScreenLinesC2 + LineOffset[old_row],
				(size_t)len * sizeof(u8char_T));
		    }
		    if (enc_dbcs == DBCS_JPNU && ScreenLines2 != NULL)
			mch_memmove(new_ScreenLines2 + new_LineOffset[new_row],
				ScreenLines2 + LineOffset[old_row],
				(size_t)len * sizeof(schar_T));
#endif
		    mch_memmove(new_ScreenAttrs + new_LineOffset[new_row],
			    ScreenAttrs + LineOffset[old_row],
			    (size_t)len * sizeof(sattr_T));
		}
	    }
	}
	/* Use the last line of the screen for the current line. */
	current_ScreenLine = new_ScreenLines + Rows * Columns;
    }

    vim_free(ScreenLines);
#ifdef FEAT_MBYTE
    vim_free(ScreenLinesUC);
    vim_free(ScreenLinesC1);
    vim_free(ScreenLinesC2);
    vim_free(ScreenLines2);
#endif
    vim_free(ScreenAttrs);
    vim_free(LineOffset);
    vim_free(LineWraps);
    ScreenLines = new_ScreenLines;
#ifdef FEAT_MBYTE
    ScreenLinesUC = new_ScreenLinesUC;
    ScreenLinesC1 = new_ScreenLinesC1;
    ScreenLinesC2 = new_ScreenLinesC2;
    ScreenLines2 = new_ScreenLines2;
#endif
    ScreenAttrs = new_ScreenAttrs;
    LineOffset = new_LineOffset;
    LineWraps = new_LineWraps;

    /* It's important that screen_Rows and screen_Columns reflect the actual
     * size of ScreenLines[].  Set them before calling anything. */
#ifdef FEAT_GUI
    old_Rows = screen_Rows;
#endif
    screen_Rows = Rows;
    screen_Columns = Columns;

    must_redraw = CLEAR;	/* need to clear the screen later */
    if (clear)
	screenclear2();

#ifdef FEAT_GUI
    else if (gui.in_use
	    && !gui.starting
	    && ScreenLines != NULL
	    && old_Rows != Rows)
    {
	(void)gui_redraw_block(0, 0, (int)Rows - 1, (int)Columns - 1, 0);
	/*
	 * Adjust the position of the cursor, for when executing an external
	 * command.
	 */
	if (msg_row >= Rows)		/* Rows got smaller */
	    msg_row = Rows - 1;		/* put cursor at last row */
	else if (Rows > old_Rows)	/* Rows got bigger */
	    msg_row += Rows - old_Rows; /* put cursor in same place */
	if (msg_col >= Columns)		/* Columns got smaller */
	    msg_col = Columns - 1;	/* put cursor at last column */
    }
#endif

#ifdef FEAT_GUI_BEOS
    vim_unlock_screen();
#endif
    entered = FALSE;
}

    void
screenclear()
{
    check_for_delay(FALSE);
    screenalloc(FALSE);	    /* allocate screen buffers if size changed */
    screenclear2();	    /* clear the screen */
}

    static void
screenclear2()
{
    int	    i;

    if (starting == NO_SCREEN || ScreenLines == NULL
#ifdef FEAT_GUI
	    || (gui.in_use && gui.starting)
#endif
	    )
	return;

#ifdef FEAT_GUI
    if (!gui.in_use)
#endif
	screen_attr = -1;	/* force setting the Normal colors */
    screen_stop_highlight();	/* don't want highlighting here */

#ifdef FEAT_CLIPBOARD
    /* disable selection without redrawing it */
    clip_scroll_selection(9999);
#endif

    /* blank out ScreenLines */
    for (i = 0; i < Rows; ++i)
    {
	lineclear(LineOffset[i], (int)Columns);
	LineWraps[i] = FALSE;
    }

    if (can_clear(T_CL))
    {
	out_str(T_CL);		/* clear the display */
	clear_cmdline = FALSE;
    }
    else
    {
	/* can't clear the screen, mark all chars with invalid attributes */
	for (i = 0; i < Rows; ++i)
	    lineinvalid(LineOffset[i], (int)Columns);
	clear_cmdline = TRUE;
    }

    screen_cleared = TRUE;	/* can use contents of ScreenLines now */

    win_rest_invalid(firstwin);
    redraw_cmdline = TRUE;
    if (must_redraw == CLEAR)	/* no need to clear again */
	must_redraw = NOT_VALID;
    compute_cmdrow();
    msg_row = cmdline_row;	/* put cursor on last line for messages */
    msg_col = 0;
    screen_start();		/* don't know where cursor is now */
    msg_scrolled = 0;		/* can't scroll back */
    msg_didany = FALSE;
    msg_didout = FALSE;
}

/*
 * Clear one line in ScreenLines.
 */
    static void
lineclear(off, width)
    unsigned	off;
    int		width;
{
    (void)vim_memset(ScreenLines + off, ' ', (size_t)width * sizeof(schar_T));
#ifdef FEAT_MBYTE
    if (enc_utf8)
	(void)vim_memset(ScreenLinesUC + off, 0,
					  (size_t)width * sizeof(u8char_T));
#endif
    (void)vim_memset(ScreenAttrs + off, 0, (size_t)width * sizeof(sattr_T));
}

/*
 * Mark one line in ScreenLines invalid by setting the attributes to an
 * invalid value.
 */
    static void
lineinvalid(off, width)
    unsigned	off;
    int		width;
{
    (void)vim_memset(ScreenAttrs + off, -1, (size_t)width * sizeof(sattr_T));
}

#ifdef FEAT_VERTSPLIT
/*
 * Copy part of a Screenline for vertically split window "wp".
 */
    static void
linecopy(to, from, wp)
    int		to;
    int		from;
    win_T	*wp;
{
    unsigned	off_to = LineOffset[to] + wp->w_wincol;
    unsigned	off_from = LineOffset[from] + wp->w_wincol;

    mch_memmove(ScreenLines + off_to, ScreenLines + off_from,
	    wp->w_width * sizeof(schar_T));
# ifdef FEAT_MBYTE
    if (enc_utf8)
    {
	mch_memmove(ScreenLinesUC + off_to, ScreenLinesUC + off_from,
		wp->w_width * sizeof(u8char_T));
	mch_memmove(ScreenLinesC1 + off_to, ScreenLinesC1 + off_from,
		wp->w_width * sizeof(u8char_T));
	mch_memmove(ScreenLinesC2 + off_to, ScreenLinesC2 + off_from,
		wp->w_width * sizeof(u8char_T));
    }
    if (enc_dbcs == DBCS_JPNU)
	mch_memmove(ScreenLines2 + off_to, ScreenLines2 + off_from,
		wp->w_width * sizeof(schar_T));
# endif
    mch_memmove(ScreenAttrs + off_to, ScreenAttrs + off_from,
	    wp->w_width * sizeof(sattr_T));
}
#endif

/*
 * Return TRUE if clearing with term string "p" would work.
 * It can't work when the string is empty or it won't set the right background.
 */
    int
can_clear(p)
    char_u	*p;
{
    return (*p != NUL && (t_colors <= 1
#ifdef FEAT_GUI
		|| gui.in_use
#endif
		|| cterm_normal_bg_color == 0 || *T_UT != NUL));
}

/*
 * Reset cursor position. Use whenever cursor was moved because of outputting
 * something directly to the screen (shell commands) or a terminal control
 * code.
 */
    void
screen_start()
{
    screen_cur_row = screen_cur_col = 9999;
}

/*
 * Note that the cursor has gone down to the next line, column 0.
 * Used for Ex mode.
 */
    void
screen_down()
{
    screen_cur_col = 0;
    if (screen_cur_row < Rows - 1)
	++screen_cur_row;
}

/*
 * Move the cursor to position "row","col" in the screen.
 * This tries to find the most efficient way to move, minimizing the number of
 * characters sent to the terminal.
 */
    void
windgoto(row, col)
    int	    row;
    int	    col;
{
    char_u	    *p;
    int		    i;
    int		    plan;
    int		    cost;
    int		    wouldbe_col;
    int		    noinvcurs;
    char_u	    *bs;
    int		    goto_cost;
    int		    attr;

#define GOTO_COST   7	/* asssume a term_windgoto() takes about 7 chars */
#define HIGHL_COST  5	/* assume unhighlight takes 5 chars */

#define PLAN_LE	    1
#define PLAN_CR	    2
#define PLAN_NL	    3
#define PLAN_WRITE  4
    /* Can't use ScreenLines unless initialized */
    if (ScreenLines == NULL)
	return;

    if (col != screen_cur_col || row != screen_cur_row)
    {
	/* Check for valid position. */
	if (row < 0)	/* window without text lines? */
	    row = 0;
	if (row >= screen_Rows)
	    row = screen_Rows - 1;
	if (col >= screen_Columns)
	    col = screen_Columns - 1;

	/* check if no cursor movement is allowed in highlight mode */
	if (screen_attr && *T_MS == NUL)
	    noinvcurs = HIGHL_COST;
	else
	    noinvcurs = 0;
	goto_cost = GOTO_COST + noinvcurs;

	/*
	 * Plan how to do the positioning:
	 * 1. Use CR to move it to column 0, same row.
	 * 2. Use T_LE to move it a few columns to the left.
	 * 3. Use NL to move a few lines down, column 0.
	 * 4. Move a few columns to the right with T_ND or by writing chars.
	 *
	 * Don't do this if the cursor went beyond the last column, the cursor
	 * position is unknown then (some terminals wrap, some don't )
	 *
	 * First check if the highlighting attibutes allow us to write
	 * characters to move the cursor to the right.
	 */
	if (row >= screen_cur_row && screen_cur_col < Columns)
	{
	    /*
	     * If the cursor is in the same row, bigger col, we can use CR
	     * or T_LE.
	     */
	    bs = NULL;			    /* init for GCC */
	    attr = screen_attr;
	    if (row == screen_cur_row && col < screen_cur_col)
	    {
		/* "le" is preferred over "bc", because "bc" is obsolete */
		if (*T_LE)
		    bs = T_LE;		    /* "cursor left" */
		else
		    bs = T_BC;		    /* "backspace character (old) */
		if (*bs)
		    cost = (screen_cur_col - col) * (int)STRLEN(bs);
		else
		    cost = 999;
		if (col + 1 < cost)	    /* using CR is less characters */
		{
		    plan = PLAN_CR;
		    wouldbe_col = 0;
		    cost = 1;		    /* CR is just one character */
		}
		else
		{
		    plan = PLAN_LE;
		    wouldbe_col = col;
		}
		if (noinvcurs)		    /* will stop highlighting */
		{
		    cost += noinvcurs;
		    attr = 0;
		}
	    }

	    /*
	     * If the cursor is above where we want to be, we can use CR LF.
	     */
	    else if (row > screen_cur_row)
	    {
		plan = PLAN_NL;
		wouldbe_col = 0;
		cost = (row - screen_cur_row) * 2;  /* CR LF */
		if (noinvcurs)		    /* will stop highlighting */
		{
		    cost += noinvcurs;
		    attr = 0;
		}
	    }

	    /*
	     * If the cursor is in the same row, smaller col, just use write.
	     */
	    else
	    {
		plan = PLAN_WRITE;
		wouldbe_col = screen_cur_col;
		cost = 0;
	    }

	    /*
	     * Check if any characters that need to be written have the
	     * correct attributes.  Also avoid UTF-8 characters.
	     */
	    i = col - wouldbe_col;
	    if (i > 0)
		cost += i;
	    if (cost < goto_cost && i > 0)
	    {
		/*
		 * Check if the attributes are correct without additionally
		 * stopping highlighting.
		 */
		p = ScreenAttrs + LineOffset[row] + wouldbe_col;
		while (i && *p++ == attr)
		    --i;
		if (i != 0)
		{
		    /*
		     * Try if it works when highlighting is stopped here.
		     */
		    if (*--p == 0)
		    {
			cost += noinvcurs;
			while (i && *p++ == 0)
			    --i;
		    }
		    if (i != 0)
			cost = 999;	/* different attributes, don't do it */
		}
#ifdef FEAT_MBYTE
		if (enc_utf8)
		{
		    /* Don't use an UTF-8 char for positioning, it's slow. */
		    for (i = wouldbe_col; i < col; ++i)
			if (ScreenLinesUC[LineOffset[row] + i] != 0)
			{
			    cost = 999;
			    break;
			}
		}
#endif
	    }

	    /*
	     * We can do it without term_windgoto()!
	     */
	    if (cost < goto_cost)
	    {
		if (plan == PLAN_LE)
		{
		    if (noinvcurs)
			screen_stop_highlight();
		    while (screen_cur_col > col)
		    {
			out_str(bs);
			--screen_cur_col;
		    }
		}
		else if (plan == PLAN_CR)
		{
		    if (noinvcurs)
			screen_stop_highlight();
		    out_char('\r');
		    screen_cur_col = 0;
		}
		else if (plan == PLAN_NL)
		{
		    if (noinvcurs)
			screen_stop_highlight();
		    while (screen_cur_row < row)
		    {
			out_char('\n');
			++screen_cur_row;
		    }
		    screen_cur_col = 0;
		}

		i = col - screen_cur_col;
		if (i > 0)
		{
		    /*
		     * Use cursor-right if it's one character only.  Avoids
		     * removing a line of pixels from the last bold char, when
		     * using the bold trick in the GUI.
		     */
		    if (T_ND[0] != NUL && T_ND[1] == NUL)
		    {
			while (i-- > 0)
			    out_char(*T_ND);
		    }
		    else
		    {
			int	off;

			off = LineOffset[row] + screen_cur_col;
			while (i-- > 0)
			{
			    if (ScreenAttrs[off] != screen_attr)
				screen_stop_highlight();
#ifdef FEAT_MBYTE
			    out_flush_check();
#endif
			    out_char(ScreenLines[off]);
#ifdef FEAT_MBYTE
			    if (enc_dbcs == DBCS_JPNU
						  && ScreenLines[off] == 0x8e)
				out_char(ScreenLines2[off]);
#endif
			    ++off;
			}
		    }
		}
	    }
	}
	else
	    cost = 999;

	if (cost >= goto_cost)
	{
	    if (noinvcurs)
		screen_stop_highlight();
	    if (row == screen_cur_row && (col > screen_cur_col) &&
								*T_CRI != NUL)
		term_cursor_right(col - screen_cur_col);
	    else
		term_windgoto(row, col);
	}
	screen_cur_row = row;
	screen_cur_col = col;
    }
}

/*
 * Set cursor to its position in the current window.
 */
    void
setcursor()
{
    if (redrawing())
    {
	validate_cursor();
	windgoto(W_WINROW(curwin) + curwin->w_wrow,
		W_WINCOL(curwin) + (
#ifdef FEAT_RIGHTLEFT
		curwin->w_p_rl ? ((int)W_WIDTH(curwin) - curwin->w_wcol - (
# ifdef FEAT_MBYTE
			has_mbyte ? (*mb_ptr2cells)(ml_get_cursor()) :
# endif
			1)) :
#endif
							    curwin->w_wcol));
    }
}


/*
 * insert 'line_count' lines at 'row' in window 'wp'
 * if 'invalid' is TRUE the wp->w_lines[].wl_lnum is invalidated.
 * if 'mayclear' is TRUE the screen will be cleared if it is faster than
 * scrolling.
 * Returns FAIL if the lines are not inserted, OK for success.
 */
    int
win_ins_lines(wp, row, line_count, invalid, mayclear)
    win_T	*wp;
    int		row;
    int		line_count;
    int		invalid;
    int		mayclear;
{
    int		did_delete;
    int		nextrow;
    int		lastrow;
    int		retval;

    if (invalid)
	wp->w_lines_valid = 0;

    if (wp->w_height < 5)
	return FAIL;

    if (line_count > wp->w_height - row)
	line_count = wp->w_height - row;

    retval = win_do_lines(wp, row, line_count, mayclear, FALSE);
    if (retval != MAYBE)
	return retval;

    /*
     * If there is a next window or a status line, we first try to delete the
     * lines at the bottom to avoid messing what is after the window.
     * If this fails and there are following windows, don't do anything to avoid
     * messing up those windows, better just redraw.
     */
    did_delete = FALSE;
#ifdef FEAT_WINDOWS
    if (wp->w_next != NULL || wp->w_status_height)
    {
	if (screen_del_lines(0, W_WINROW(wp) + wp->w_height - line_count,
				    line_count, (int)Rows, FALSE, NULL) == OK)
	    did_delete = TRUE;
	else if (wp->w_next)
	    return FAIL;
    }
#endif
    /*
     * if no lines deleted, blank the lines that will end up below the window
     */
    if (!did_delete)
    {
#ifdef FEAT_WINDOWS
	wp->w_redr_status = TRUE;
#endif
	redraw_cmdline = TRUE;
	nextrow = W_WINROW(wp) + wp->w_height + W_STATUS_HEIGHT(wp);
	lastrow = nextrow + line_count;
	if (lastrow > Rows)
	    lastrow = Rows;
	screen_fill(nextrow - line_count, lastrow - line_count,
		  W_WINCOL(wp), (int)W_ENDCOL(wp),
		  ' ', ' ', 0);
    }

    if (screen_ins_lines(0, W_WINROW(wp) + row, line_count, (int)Rows, NULL)
								      == FAIL)
    {
	    /* deletion will have messed up other windows */
	if (did_delete)
	{
#ifdef FEAT_WINDOWS
	    wp->w_redr_status = TRUE;
#endif
	    win_rest_invalid(W_NEXT(wp));
	}
	return FAIL;
    }

    return OK;
}

/*
 * delete "line_count" window lines at "row" in window "wp"
 * If "invalid" is TRUE curwin->w_lines[] is invalidated.
 * If "mayclear" is TRUE the screen will be cleared if it is faster than
 * scrolling
 * Return OK for success, FAIL if the lines are not deleted.
 */
    int
win_del_lines(wp, row, line_count, invalid, mayclear)
    win_T	*wp;
    int		row;
    int		line_count;
    int		invalid;
    int		mayclear;
{
    int		retval;

    if (invalid)
	wp->w_lines_valid = 0;

    if (line_count > wp->w_height - row)
	line_count = wp->w_height - row;

    retval = win_do_lines(wp, row, line_count, mayclear, TRUE);
    if (retval != MAYBE)
	return retval;

    if (screen_del_lines(0, W_WINROW(wp) + row, line_count,
					      (int)Rows, FALSE, NULL) == FAIL)
	return FAIL;

#ifdef FEAT_WINDOWS
    /*
     * If there are windows or status lines below, try to put them at the
     * correct place. If we can't do that, they have to be redrawn.
     */
    if (wp->w_next || wp->w_status_height || cmdline_row < Rows - 1)
    {
	if (screen_ins_lines(0, W_WINROW(wp) + wp->w_height - line_count,
					 line_count, (int)Rows, NULL) == FAIL)
	{
	    wp->w_redr_status = TRUE;
	    win_rest_invalid(wp->w_next);
	}
    }
    /*
     * If this is the last window and there is no status line, redraw the
     * command line later.
     */
    else
#endif
	redraw_cmdline = TRUE;
    return OK;
}

/*
 * Common code for win_ins_lines() and win_del_lines().
 * Returns OK or FAIL when the work has been done.
 * Returns MAYBE when not finished yet.
 */
    static int
win_do_lines(wp, row, line_count, mayclear, del)
    win_T	*wp;
    int		row;
    int		line_count;
    int		mayclear;
    int		del;
{
    int		retval;

    if (!redrawing() || line_count <= 0)
	return FAIL;

    /* only a few lines left: redraw is faster */
    if (mayclear && Rows - line_count < 5
#ifdef FEAT_VERTSPLIT
	    && wp->w_width == Columns
#endif
	    )
    {
	screenclear();	    /* will set wp->w_lines_valid to 0 */
	return FAIL;
    }

    /*
     * Delete all remaining lines
     */
    if (row + line_count >= wp->w_height)
    {
	screen_fill(W_WINROW(wp) + row, W_WINROW(wp) + wp->w_height,
		W_WINCOL(wp), (int)W_ENDCOL(wp),
		' ', ' ', 0);
	return OK;
    }

    /*
     * when scrolling, the message on the command line should be cleared,
     * otherwise it will stay there forever.
     */
    clear_cmdline = TRUE;

    /*
     * If the terminal can set a scroll region, use that.
     * Always do this in a vertically split window.  This will redraw from
     * ScreenLines[] when t_CV isn't defined.  That's faster than using
     * win_line().
     * Don't use a scroll region when we are going to redraw the text, writing
     * a character in the lower right corner of the scroll region causes a
     * scroll-up in the DJGPP version.
     */
    if (scroll_region
#ifdef FEAT_VERTSPLIT
	    || W_WIDTH(wp) != Columns
#endif
	    )
    {
#ifdef FEAT_VERTSPLIT
	if (scroll_region && (wp->w_width == Columns || *T_CSV != NUL))
#endif
	    scroll_region_set(wp, row);
	if (del)
	    retval = screen_del_lines(W_WINROW(wp) + row, 0, line_count,
					       wp->w_height - row, FALSE, wp);
	else
	    retval = screen_ins_lines(W_WINROW(wp) + row, 0, line_count,
						      wp->w_height - row, wp);
#ifdef FEAT_VERTSPLIT
	if (scroll_region && (wp->w_width == Columns || *T_CSV != NUL))
#endif
	    scroll_region_reset();
	return retval;
    }

#ifdef FEAT_WINDOWS
    if (wp->w_next != NULL && p_tf) /* don't delete/insert on fast terminal */
	return FAIL;
#endif

    return MAYBE;
}

/*
 * window 'wp' and everything after it is messed up, mark it for redraw
 */
    static void
win_rest_invalid(wp)
    win_T	*wp;
{
#ifdef FEAT_WINDOWS
    while (wp != NULL)
#else
    if (wp != NULL)
#endif
    {
	redraw_win_later(wp, NOT_VALID);
#ifdef FEAT_WINDOWS
	wp->w_redr_status = TRUE;
	wp = wp->w_next;
#endif
    }
    redraw_cmdline = TRUE;
}

/*
 * The rest of the routines in this file perform screen manipulations. The
 * given operation is performed physically on the screen. The corresponding
 * change is also made to the internal screen image. In this way, the editor
 * anticipates the effect of editing changes on the appearance of the screen.
 * That way, when we call screenupdate a complete redraw isn't usually
 * necessary. Another advantage is that we can keep adding code to anticipate
 * screen changes, and in the meantime, everything still works.
 */

/*
 * types for inserting or deleting lines
 */
#define USE_T_CAL   1
#define USE_T_CDL   2
#define USE_T_AL    3
#define USE_T_CE    4
#define USE_T_DL    5
#define USE_T_SR    6
#define USE_NL	    7
#define USE_T_CD    8
#define USE_REDRAW  9

/*
 * insert lines on the screen and update ScreenLines[]
 * 'end' is the line after the scrolled part. Normally it is Rows.
 * When scrolling region used 'off' is the offset from the top for the region.
 * 'row' and 'end' are relative to the start of the region.
 *
 * return FAIL for failure, OK for success.
 */
    static int
screen_ins_lines(off, row, line_count, end, wp)
    int		off;
    int		row;
    int		line_count;
    int		end;
    win_T	*wp;	    /* NULL or window to use width from */
{
    int		i;
    int		j;
    unsigned	temp;
    int		cursor_row;
    int		type;
    int		result_empty;
    int		can_ce = can_clear(T_CE);

    /*
     * FAIL if
     * - there is no valid screen
     * - the screen has to be redrawn completely
     * - the line count is less than one
     * - the line count is more than 'ttyscroll'
     */
    if (!screen_valid(TRUE) || line_count <= 0 || line_count > p_ttyscroll)
	return FAIL;

    /*
     * There are seven ways to insert lines:
     * 0. When in a vertically split window and t_CV isn't set, redraw the
     *    characters from ScreenLines[].
     * 1. Use T_CD (clear to end of display) if it exists and the result of
     *	  the insert is just empty lines
     * 2. Use T_CAL (insert multiple lines) if it exists and T_AL is not
     *	  present or line_count > 1. It looks better if we do all the inserts
     *	  at once.
     * 3. Use T_CDL (delete multiple lines) if it exists and the result of the
     *	  insert is just empty lines and T_CE is not present or line_count >
     *	  1.
     * 4. Use T_AL (insert line) if it exists.
     * 5. Use T_CE (erase line) if it exists and the result of the insert is
     *	  just empty lines.
     * 6. Use T_DL (delete line) if it exists and the result of the insert is
     *	  just empty lines.
     * 7. Use T_SR (scroll reverse) if it exists and inserting at row 0 and
     *	  the 'da' flag is not set or we have clear line capability.
     * 8. redraw the characters from ScreenLines[].
     *
     * Careful: In a hpterm scroll reverse doesn't work as expected, it moves
     * the scrollbar for the window. It does have insert line, use that if it
     * exists.
     */
    result_empty = (row + line_count >= end);
#ifdef FEAT_VERTSPLIT
    if (wp != NULL && wp->w_width != Columns && *T_CSV == NUL)
	type = USE_REDRAW;
    else
#endif
    if (can_clear(T_CD) && result_empty)
	type = USE_T_CD;
    else if (*T_CAL != NUL && (line_count > 1 || *T_AL == NUL))
	type = USE_T_CAL;
    else if (*T_CDL != NUL && result_empty && (line_count > 1 || !can_ce))
	type = USE_T_CDL;
    else if (*T_AL != NUL)
	type = USE_T_AL;
    else if (can_ce && result_empty)
	type = USE_T_CE;
    else if (*T_DL != NUL && result_empty)
	type = USE_T_DL;
    else if (*T_SR != NUL && row == 0 && (*T_DA == NUL || can_ce))
	type = USE_T_SR;
    else
	return FAIL;

    /*
     * For clearing the lines screen_del_lines() is used. This will also take
     * care of t_db if necessary.
     */
    if (type == USE_T_CD || type == USE_T_CDL ||
					 type == USE_T_CE || type == USE_T_DL)
	return screen_del_lines(off, row, line_count, end, FALSE, wp);

    /*
     * If text is retained below the screen, first clear or delete as many
     * lines at the bottom of the window as are about to be inserted so that
     * the deleted lines won't later surface during a screen_del_lines.
     */
    if (*T_DB)
	screen_del_lines(off, end - line_count, line_count, end, FALSE, wp);

#ifdef FEAT_CLIPBOARD
    /* Remove a modeless selection when inserting lines halfway the screen
     * or not the full width of the screen. */
    if (off + row > 0
# ifdef FEAT_VERTSPLIT
	    || (wp != NULL && wp->w_width != Columns)
# endif
       )
	clip_clear_selection();
    else
	clip_scroll_selection(-line_count);
#endif

#ifdef FEAT_GUI_BEOS
    vim_lock_screen();
#endif
#ifdef FEAT_GUI
    /* Don't update the GUI cursor here, ScreenLines[] is invalid until the
     * scrolling is actually carried out. */
    gui_dont_update_cursor();
#endif

    if (*T_CCS != NUL)	   /* cursor relative to region */
	cursor_row = row;
    else
	cursor_row = row + off;

    /*
     * Shift LineOffset[] line_count down to reflect the inserted lines.
     * Clear the inserted lines in ScreenLines[].
     */
    row += off;
    end += off;
    for (i = 0; i < line_count; ++i)
    {
#ifdef FEAT_VERTSPLIT
	if (wp != NULL && wp->w_width != Columns)
	{
	    /* need to copy part of a line */
	    j = end - 1 - i;
	    while ((j -= line_count) >= row)
		linecopy(j + line_count, j, wp);
	    j += line_count;
	    if (can_clear((char_u *)" "))
		lineclear(LineOffset[j] + wp->w_wincol, wp->w_width);
	    else
		lineinvalid(LineOffset[j] + wp->w_wincol, wp->w_width);
	    LineWraps[j] = FALSE;
	}
	else
#endif
	{
	    j = end - 1 - i;
	    temp = LineOffset[j];
	    while ((j -= line_count) >= row)
	    {
		LineOffset[j + line_count] = LineOffset[j];
		LineWraps[j + line_count] = LineWraps[j];
	    }
	    LineOffset[j + line_count] = temp;
	    LineWraps[j + line_count] = FALSE;
	    if (can_clear((char_u *)" "))
		lineclear(temp, (int)Columns);
	    else
		lineinvalid(temp, (int)Columns);
	}
    }
#ifdef FEAT_GUI_BEOS
    vim_unlock_screen();
#endif

    screen_stop_highlight();
    windgoto(cursor_row, 0);

#ifdef FEAT_VERTSPLIT
    /* redraw the characters */
    if (type == USE_REDRAW)
	redraw_block(row, end, wp);
    else
#endif
	if (type == USE_T_CAL)
    {
	term_append_lines(line_count);
	screen_start();		/* don't know where cursor is now */
    }
    else
    {
	for (i = 0; i < line_count; i++)
	{
	    if (type == USE_T_AL)
	    {
		if (i && cursor_row != 0)
		    windgoto(cursor_row, 0);
		out_str(T_AL);
	    }
	    else  /* type == USE_T_SR */
		out_str(T_SR);
	    screen_start();	    /* don't know where cursor is now */
	}
    }

    /*
     * With scroll-reverse and 'da' flag set we need to clear the lines that
     * have been scrolled down into the region.
     */
    if (type == USE_T_SR && *T_DA)
    {
	for (i = 0; i < line_count; ++i)
	{
	    windgoto(off + i, 0);
	    out_str(T_CE);
	    screen_start();	    /* don't know where cursor is now */
	}
    }

#ifdef FEAT_GUI
    gui_can_update_cursor();
    if (gui.in_use)
	out_flush();	/* always flush after a scroll */
#endif
    return OK;
}

/*
 * delete lines on the screen and update ScreenLines[]
 * 'end' is the line after the scrolled part. Normally it is Rows.
 * When scrolling region used 'off' is the offset from the top for the region.
 * 'row' and 'end' are relative to the start of the region.
 *
 * Return OK for success, FAIL if the lines are not deleted.
 */
/*ARGSUSED*/
    int
screen_del_lines(off, row, line_count, end, force, wp)
    int		off;
    int		row;
    int		line_count;
    int		end;
    int		force;		/* even when line_count > p_ttyscroll */
    win_T	*wp;		/* NULL or window to use width from */
{
    int		j;
    int		i;
    unsigned	temp;
    int		cursor_row;
    int		cursor_end;
    int		result_empty;	/* result is empty until end of region */
    int		can_delete;	/* deleting line codes can be used */
    int		type;

    /*
     * FAIL if
     * - there is no valid screen
     * - the screen has to be redrawn completely
     * - the line count is less than one
     * - the line count is more than 'ttyscroll'
     */
    if (!screen_valid(TRUE) || line_count <= 0 ||
					 (!force && line_count > p_ttyscroll))
	return FAIL;

    /*
     * Check if the rest of the current region will become empty.
     */
    result_empty = row + line_count >= end;

    /*
     * We can delete lines only when 'db' flag not set or when 'ce' option
     * available.
     */
    can_delete = (*T_DB == NUL || can_clear(T_CE));

    /*
     * There are six ways to delete lines:
     * 0. When in a vertically split window and t_CV isn't set, redraw the
     *    characters from ScreenLines[].
     * 1. Use T_CD if it exists and the result is empty.
     * 2. Use newlines if row == 0 and count == 1 or T_CDL does not exist.
     * 3. Use T_CDL (delete multiple lines) if it exists and line_count > 1 or
     *	  none of the other ways work.
     * 4. Use T_CE (erase line) if the result is empty.
     * 5. Use T_DL (delete line) if it exists.
     * 6. redraw the characters from ScreenLines[].
     */
#ifdef FEAT_VERTSPLIT
    if (wp != NULL && wp->w_width != Columns && *T_CSV == NUL)
	type = USE_REDRAW;
    else
#endif
    if (can_clear(T_CD) && result_empty)
	type = USE_T_CD;
#if defined(__BEOS__) && defined(BEOS_DR8)
    /*
     * USE_NL does not seem to work in Terminal of DR8 so we set T_DB="" in
     * its internal termcap... this works okay for tests which test *T_DB !=
     * NUL.  It has the disadvantage that the user cannot use any :set t_*
     * command to get T_DB (back) to empty_option, only :set term=... will do
     * the trick...
     * Anyway, this hack will hopefully go away with the next OS release.
     * (Olaf Seibert)
     */
    else if (row == 0 && T_DB == empty_option
					&& (line_count == 1 || *T_CDL == NUL))
#else
    else if (row == 0 && (
#ifndef AMIGA
	/* On the Amiga, somehow '\n' on the last line doesn't always scroll
	 * up, so use delete-line command */
			    line_count == 1 ||
#endif
						*T_CDL == NUL))
#endif
	type = USE_NL;
    else if (*T_CDL != NUL && line_count > 1 && can_delete)
	type = USE_T_CDL;
    else if (can_clear(T_CE) && result_empty
#ifdef FEAT_VERTSPLIT
	    && (wp == NULL || wp->w_width == Columns)
#endif
	    )
	type = USE_T_CE;
    else if (*T_DL != NUL && can_delete)
	type = USE_T_DL;
    else if (*T_CDL != NUL && can_delete)
	type = USE_T_CDL;
    else
	return FAIL;

#ifdef FEAT_CLIPBOARD
    /* Remove a modeless selection when deleting lines halfway the screen or
     * not the full width of the screen. */
    if (off + row > 0
# ifdef FEAT_VERTSPLIT
	    || (wp != NULL && wp->w_width != Columns)
# endif
       )
	clip_clear_selection();
    else
	clip_scroll_selection(line_count);
#endif

#ifdef FEAT_GUI_BEOS
    vim_lock_screen();
#endif
#ifdef FEAT_GUI
    /* Don't update the GUI cursor here, ScreenLines[] is invalid until the
     * scrolling is actually carried out. */
    gui_dont_update_cursor();
#endif

    if (*T_CCS != NUL)	    /* cursor relative to region */
    {
	cursor_row = row;
	cursor_end = end;
    }
    else
    {
	cursor_row = row + off;
	cursor_end = end + off;
    }

    /*
     * Now shift LineOffset[] line_count up to reflect the deleted lines.
     * Clear the inserted lines in ScreenLines[].
     */
    row += off;
    end += off;
    for (i = 0; i < line_count; ++i)
    {
#ifdef FEAT_VERTSPLIT
	if (wp != NULL && wp->w_width != Columns)
	{
	    /* need to copy part of a line */
	    j = row + i;
	    while ((j += line_count) <= end - 1)
		linecopy(j - line_count, j, wp);
	    j -= line_count;
	    if (can_clear((char_u *)" "))
		lineclear(LineOffset[j] + wp->w_wincol, wp->w_width);
	    else
		lineinvalid(LineOffset[j] + wp->w_wincol, wp->w_width);
	    LineWraps[j] = FALSE;
	}
	else
#endif
	{
	    /* whole width, moving the line pointers is faster */
	    j = row + i;
	    temp = LineOffset[j];
	    while ((j += line_count) <= end - 1)
	    {
		LineOffset[j - line_count] = LineOffset[j];
		LineWraps[j - line_count] = LineWraps[j];
	    }
	    LineOffset[j - line_count] = temp;
	    LineWraps[j - line_count] = FALSE;
	    if (can_clear((char_u *)" "))
		lineclear(temp, (int)Columns);
	    else
		lineinvalid(temp, (int)Columns);
	}
    }
#ifdef FEAT_GUI_BEOS
    vim_unlock_screen();
#endif

    screen_stop_highlight();

#ifdef FEAT_VERTSPLIT
    /* redraw the characters */
    if (type == USE_REDRAW)
	redraw_block(row, end, wp);
    else
#endif
	if (type == USE_T_CD)	/* delete the lines */
    {
	windgoto(cursor_row, 0);
	out_str(T_CD);
	screen_start();			/* don't know where cursor is now */
    }
    else if (type == USE_T_CDL)
    {
	windgoto(cursor_row, 0);
	term_delete_lines(line_count);
	screen_start();			/* don't know where cursor is now */
    }
    /*
     * Deleting lines at top of the screen or scroll region: Just scroll
     * the whole screen (scroll region) up by outputting newlines on the
     * last line.
     */
    else if (type == USE_NL)
    {
	windgoto(cursor_end - 1, 0);
	for (i = line_count; --i >= 0; )
	    out_char('\n');		/* cursor will remain on same line */
    }
    else
    {
	for (i = line_count; --i >= 0; )
	{
	    if (type == USE_T_DL)
	    {
		windgoto(cursor_row, 0);
		out_str(T_DL);		/* delete a line */
	    }
	    else /* type == USE_T_CE */
	    {
		windgoto(cursor_row + i, 0);
		out_str(T_CE);		/* erase a line */
	    }
	    screen_start();		/* don't know where cursor is now */
	}
    }

    /*
     * If the 'db' flag is set, we need to clear the lines that have been
     * scrolled up at the bottom of the region.
     */
    if (*T_DB && (type == USE_T_DL || type == USE_T_CDL))
    {
	for (i = line_count; i > 0; --i)
	{
	    windgoto(cursor_end - i, 0);
	    out_str(T_CE);		/* erase a line */
	    screen_start();		/* don't know where cursor is now */
	}
    }

#ifdef FEAT_GUI
    gui_can_update_cursor();
    if (gui.in_use)
	out_flush();	/* always flush after a scroll */
#endif

    return OK;
}

/*
 * show the current mode and ruler
 *
 * If clear_cmdline is TRUE, clear the rest of the cmdline.
 * If clear_cmdline is FALSE there may be a message there that needs to be
 * cleared only if a mode is shown.
 * Return the length of the message (0 if no message).
 */
    int
showmode()
{
    int		need_clear;
    int		length = 0;
    int		do_mode;
    int		attr;
    int		nwr_save;
#ifdef FEAT_INS_EXPAND
    int		sub_attr;
#endif

    do_mode = (p_smd && ((State & INSERT) || restart_edit
#ifdef FEAT_VISUAL
		|| VIsual_active
#endif
		));
    if (do_mode || Recording)
    {
	/*
	 * Don't show mode right now, when not redrawing or inside a mapping.
	 * Call char_avail() only when we are going to show something, because
	 * it takes a bit of time.
	 */
	if (!redrawing() || (char_avail() && !KeyTyped) || msg_silent != 0)
	{
	    redraw_cmdline = TRUE;		/* show mode later */
	    return 0;
	}

	nwr_save = need_wait_return;

	/* wait a bit before overwriting an important message */
	check_for_delay(FALSE);

	/* if the cmdline is more than one line high, erase top lines */
	need_clear = clear_cmdline;
	if (clear_cmdline && cmdline_row < Rows - 1)
	    msg_clr_cmdline();			/* will reset clear_cmdline */

	/* Position on the last line in the window, column 0 */
	msg_pos_mode();
	cursor_off();
	attr = hl_attr(HLF_CM);			/* Highlight mode */
	if (do_mode)
	{
	    MSG_PUTS_ATTR("--", attr);
#if defined(FEAT_XIM)
	    if (xic != NULL && im_get_status() && !p_imdisable
					&& curbuf->b_p_iminsert == B_IMODE_IM)
# ifdef HAVE_GTK2 /* most of the time, it's not XIM being used */
		MSG_PUTS_ATTR(" IM", attr);
# else
		MSG_PUTS_ATTR(" XIM", attr);
# endif
#endif
#if defined(FEAT_HANGULIN) && defined(FEAT_GUI)
	    if (gui.in_use)
	    {
		if (hangul_input_state_get())
		    MSG_PUTS_ATTR(" ÇѱÛ", attr);   /* HANGUL */
	    }
#endif
#ifdef FEAT_INS_EXPAND
	    if (edit_submode != NULL)		/* CTRL-X in Insert mode */
	    {
		/* These messages can get long, avoid a wrap in a narrow
		 * window.  Prefer showing edit_submode_extra. */
		length = (Rows - msg_row) * Columns - 3;
		if (edit_submode_extra != NULL)
		    length -= vim_strsize(edit_submode_extra);
		if (length > 0)
		{
		    if (edit_submode_pre != NULL)
			length -= vim_strsize(edit_submode_pre);
		    if (length - vim_strsize(edit_submode) > 0)
		    {
			if (edit_submode_pre != NULL)
			    msg_puts_attr(edit_submode_pre, attr);
			msg_puts_attr(edit_submode, attr);
		    }
		    if (edit_submode_extra != NULL)
		    {
			MSG_PUTS_ATTR(" ", attr);  /* add a space in between */
			if ((int)edit_submode_highl < (int)HLF_COUNT)
			    sub_attr = hl_attr(edit_submode_highl);
			else
			    sub_attr = attr;
			msg_puts_attr(edit_submode_extra, sub_attr);
		    }
		}
		length = 0;
	    }
	    else
#endif
	    {
#ifdef FEAT_VREPLACE
		if (State & VREPLACE_FLAG)
		    MSG_PUTS_ATTR(_(" VREPLACE"), attr);
		else
#endif
		    if (State & REPLACE_FLAG)
		    MSG_PUTS_ATTR(_(" REPLACE"), attr);
		else if (State & INSERT)
		{
#ifdef FEAT_RIGHTLEFT
		    if (p_ri)
			MSG_PUTS_ATTR(_(" REVERSE"), attr);
#endif
		    MSG_PUTS_ATTR(_(" INSERT"), attr);
		}
		else if (restart_edit == 'I')
		    MSG_PUTS_ATTR(_(" (insert)"), attr);
		else if (restart_edit == 'R')
		    MSG_PUTS_ATTR(_(" (replace)"), attr);
		else if (restart_edit == 'V')
		    MSG_PUTS_ATTR(_(" (vreplace)"), attr);
#ifdef FEAT_RIGHTLEFT
		if (p_hkmap)
		    MSG_PUTS_ATTR(_(" Hebrew"), attr);
# ifdef FEAT_FKMAP
		if (p_fkmap)
		    MSG_PUTS_ATTR(farsi_text_5, attr);
# endif
#endif
#ifdef FEAT_KEYMAP
		if (State & LANGMAP)
		{
# ifdef FEAT_ARABIC
		    if (curwin->w_p_arab)
			MSG_PUTS_ATTR(_(" Arabic"), attr);
		    else
# endif
			MSG_PUTS_ATTR(_(" (lang)"), attr);
		}
#endif
		if ((State & INSERT) && p_paste)
		    MSG_PUTS_ATTR(_(" (paste)"), attr);

#ifdef FEAT_VISUAL
		if (VIsual_active)
		{
		    char *p;

		    /* Don't concatenate separate words to avoid translation
		     * problems. */
		    switch ((VIsual_select ? 4 : 0)
			    + (VIsual_mode == Ctrl_V) * 2
			    + (VIsual_mode == 'V'))
		    {
			case 0:	p = N_(" VISUAL"); break;
			case 1: p = N_(" VISUAL LINE"); break;
			case 2: p = N_(" VISUAL BLOCK"); break;
			case 4: p = N_(" SELECT"); break;
			case 5: p = N_(" SELECT LINE"); break;
			default: p = N_(" SELECT BLOCK"); break;
		    }
		    MSG_PUTS_ATTR(_(p), attr);
		}
#endif
		MSG_PUTS_ATTR(" --", attr);
	    }
	    need_clear = TRUE;
	}
	if (Recording
#ifdef FEAT_INS_EXPAND
		&& edit_submode == NULL	    /* otherwise it gets too long */
#endif
		)
	{
	    MSG_PUTS_ATTR(_("recording"), attr);
	    need_clear = TRUE;
	}
	if (need_clear || clear_cmdline)
	    msg_clr_eos();
	msg_didout = FALSE;		/* overwrite this message */
	length = msg_col;
	msg_col = 0;
	need_wait_return = nwr_save;	/* never ask for hit-return for this */
    }
    else if (clear_cmdline && msg_silent == 0)
	/* Clear the whole command line.  Will reset "clear_cmdline". */
	msg_clr_cmdline();

#ifdef FEAT_CMDL_INFO
# ifdef FEAT_VISUAL
    /* In Visual mode the size of the selected area must be redrawn. */
    if (VIsual_active)
	clear_showcmd();
# endif

    /* If the last window has no status line, the ruler is after the mode
     * message and must be redrawn */
    if (redrawing()
# ifdef FEAT_WINDOWS
	    && lastwin->w_status_height == 0
# endif
       )
	win_redr_ruler(lastwin, TRUE);
#endif
    redraw_cmdline = FALSE;
    clear_cmdline = FALSE;

    return length;
}

/*
 * Position for a mode message.
 */
    static void
msg_pos_mode()
{
    msg_col = 0;
    msg_row = Rows - 1;
}

/*
 * Delete mode message.  Used when ESC is typed which is expected to end
 * Insert mode (but Insert mode didn't end yet!).
 */
    void
unshowmode(force)
    int	    force;
{
    /*
     * Don't delete it right now, when not redrawing or insided a mapping.
     */
    if (!redrawing() || (!force && char_avail() && !KeyTyped))
	redraw_cmdline = TRUE;		/* delete mode later */
    else
    {
	msg_pos_mode();
	if (Recording)
	    MSG_PUTS_ATTR(_("recording"), hl_attr(HLF_CM));
	msg_clr_eos();
    }
}

#if defined(FEAT_WINDOWS) || defined(FEAT_WILDMENU) || defined(FEAT_STL_OPT)
/*
 * Get the character to use in a status line.  Get its attributes in "*attr".
 */
    static int
fillchar_status(attr, is_curwin)
    int		*attr;
    int		is_curwin;
{
    int fill;
    if (is_curwin)
    {
	*attr = hl_attr(HLF_S);
	fill = fill_stl;
    }
    else
    {
	*attr = hl_attr(HLF_SNC);
	fill = fill_stlnc;
    }
    /* Use fill when there is highlighting, and highlighting of current
     * window differs, or the fillchars differ, or this is not the
     * current window */
    if (*attr != 0 && ((hl_attr(HLF_S) != hl_attr(HLF_SNC)
			|| !is_curwin || firstwin == lastwin)
		    || (fill_stl != fill_stlnc)))
	return fill;
    if (is_curwin)
	return '^';
    return '=';
}
#endif

#ifdef FEAT_VERTSPLIT
/*
 * Get the character to use in a separator between vertically split windows.
 * Get its attributes in "*attr".
 */
    static int
fillchar_vsep(attr)
    int	    *attr;
{
    *attr = hl_attr(HLF_C);
    if (*attr == 0 && fill_vert == ' ')
	return '|';
    else
	return fill_vert;
}
#endif

/*
 * Return TRUE if redrawing should currently be done.
 */
    int
redrawing()
{
    return (!RedrawingDisabled
		       && !(p_lz && char_avail() && !KeyTyped && !do_redraw));
}

/*
 * Return TRUE if printing messages should currently be done.
 */
    int
messaging()
{
    return (!(p_lz && char_avail() && !KeyTyped));
}

/*
 * Show current status info in ruler and various other places
 * If always is FALSE, only show ruler if position has changed.
 */
    void
showruler(always)
    int	    always;
{
    if (!always && !redrawing())
	return;
#if defined(FEAT_STL_OPT) && defined(FEAT_WINDOWS)
    if (*p_stl && curwin->w_status_height)
	win_redr_custom(curwin, FALSE);
    else
#endif
#ifdef FEAT_CMDL_INFO
	win_redr_ruler(curwin, always);
#endif

#ifdef FEAT_TITLE
    if (need_maketitle
# ifdef FEAT_STL_OPT
	    || (p_icon && (stl_syntax & STL_IN_ICON))
	    || (p_title && (stl_syntax & STL_IN_TITLE))
# endif
       )
	maketitle();
#endif
}

#ifdef FEAT_CMDL_INFO
    static void
win_redr_ruler(wp, always)
    win_T	*wp;
    int		always;
{
    char_u	buffer[70];
    int		row;
    int		fillchar;
    int		attr;
    int		empty_line = FALSE;
    colnr_T	virtcol;
    int		i;
    int		o;
#ifdef FEAT_VERTSPLIT
    int		this_ru_col;
    int		off = 0;
    int		width = Columns;
# define WITH_OFF(x) x
# define WITH_WIDTH(x) x
#else
# define WITH_OFF(x) 0
# define WITH_WIDTH(x) Columns
# define this_ru_col ru_col
#endif

    /* If 'ruler' off or redrawing disabled, don't do anything */
    if (!p_ru)
	return;

    /*
     * Check if cursor.lnum is valid, since win_redr_ruler() may be called
     * after deleting lines, before cursor.lnum is corrected.
     */
    if (wp->w_cursor.lnum > wp->w_buffer->b_ml.ml_line_count)
	return;

#ifdef FEAT_INS_EXPAND
    /* Don't draw the ruler while doing insert-completion, it might overwrite
     * the (long) mode message. */
# ifdef FEAT_WINDOWS
    if (wp == lastwin && lastwin->w_status_height == 0)
# endif
	if (edit_submode != NULL)
	    return;
#endif

#ifdef FEAT_STL_OPT
    if (*p_ruf)
    {
	win_redr_custom(wp, TRUE);
	return;
    }
#endif

    /*
     * Check if not in Insert mode and the line is empty (will show "0-1").
     */
    if (!(State & INSERT)
		&& *ml_get_buf(wp->w_buffer, wp->w_cursor.lnum, FALSE) == NUL)
	empty_line = TRUE;

    /*
     * Only draw the ruler when something changed.
     */
    validate_virtcol_win(wp);
    if (       redraw_cmdline
	    || always
	    || wp->w_cursor.lnum != wp->w_ru_cursor.lnum
	    || wp->w_cursor.col != wp->w_ru_cursor.col
	    || wp->w_virtcol != wp->w_ru_virtcol
#ifdef FEAT_VIRTUALEDIT
	    || wp->w_cursor.coladd != wp->w_ru_cursor.coladd
#endif
	    || wp->w_topline != wp->w_ru_topline
	    || wp->w_buffer->b_ml.ml_line_count != wp->w_ru_line_count
#ifdef FEAT_DIFF
	    || wp->w_topfill != wp->w_ru_topfill
#endif
	    || empty_line != wp->w_ru_empty)
    {
	cursor_off();
#ifdef FEAT_WINDOWS
	if (wp->w_status_height)
	{
	    row = W_WINROW(wp) + wp->w_height;
	    fillchar = fillchar_status(&attr, wp == curwin);
# ifdef FEAT_VERTSPLIT
	    off = W_WINCOL(wp);
	    width = W_WIDTH(wp);
# endif
	}
	else
#endif
	{
	    row = Rows - 1;
	    fillchar = ' ';
	    attr = 0;
#ifdef FEAT_VERTSPLIT
	    width = Columns;
	    off = 0;
#endif
	}

	/* In list mode virtcol needs to be recomputed */
	virtcol = wp->w_virtcol;
	if (wp->w_p_list && lcs_tab1 == NUL)
	{
	    wp->w_p_list = FALSE;
	    getvvcol(wp, &wp->w_cursor, NULL, &virtcol, NULL);
	    wp->w_p_list = TRUE;
	}

	/*
	 * Some sprintfs return the length, some return a pointer.
	 * To avoid portability problems we use strlen() here.
	 */
	sprintf((char *)buffer, "%ld,",
		(wp->w_buffer->b_ml.ml_flags & ML_EMPTY)
		    ? 0L
		    : (long)(wp->w_cursor.lnum));
	col_print(buffer + STRLEN(buffer),
			empty_line ? 0 : (int)wp->w_cursor.col + 1,
			(int)virtcol + 1);

	/*
	 * Add a "50%" if there is room for it.
	 * On the last line, don't print in the last column (scrolls the
	 * screen up on some terminals).
	 */
	i = (int)STRLEN(buffer);
	get_rel_pos(wp, buffer + i + 1);
	o = i + vim_strsize(buffer + i + 1);
#ifdef FEAT_WINDOWS
	if (wp->w_status_height == 0)	/* can't use last char of screen */
#endif
	    ++o;
#ifdef FEAT_VERTSPLIT
	this_ru_col = ru_col - (Columns - width);
	if (this_ru_col < 0)
	    this_ru_col = 0;
#endif
	/* Never use more than half the window/screen width, leave the other
	 * half for the filename. */
	if (this_ru_col < (WITH_WIDTH(width) + 1) / 2)
	    this_ru_col = (WITH_WIDTH(width) + 1) / 2;
	if (this_ru_col + o < WITH_WIDTH(width))
	{
	    while (this_ru_col + o < WITH_WIDTH(width))
	    {
#ifdef FEAT_MBYTE
		if (has_mbyte)
		    i += (*mb_char2bytes)(fillchar, buffer + i);
		else
#endif
		    buffer[i++] = fillchar;
		++o;
	    }
	    get_rel_pos(wp, buffer + i);
	}
	/* Truncate at window boundary. */
#ifdef FEAT_MBYTE
	if (has_mbyte)
	{
	    o = 0;
	    for (i = 0; buffer[i] != NUL; i += (*mb_ptr2len_check)(buffer + i))
	    {
		o += (*mb_ptr2cells)(buffer + i);
		if (this_ru_col + o > WITH_WIDTH(width))
		{
		    buffer[i] = NUL;
		    break;
		}
	    }
	}
	else
#endif
	if (this_ru_col + (int)STRLEN(buffer) > WITH_WIDTH(width))
	    buffer[WITH_WIDTH(width) - this_ru_col] = NUL;

	screen_puts(buffer, row, this_ru_col + WITH_OFF(off), attr);
	i = redraw_cmdline;
	screen_fill(row, row + 1,
		this_ru_col + WITH_OFF(off) + (int)STRLEN(buffer),
		(int)(WITH_OFF(off) + WITH_WIDTH(width)),
		fillchar, fillchar, attr);
	/* don't redraw the cmdline because of showing the ruler */
	redraw_cmdline = i;
	wp->w_ru_cursor = wp->w_cursor;
	wp->w_ru_virtcol = wp->w_virtcol;
	wp->w_ru_empty = empty_line;
	wp->w_ru_topline = wp->w_topline;
	wp->w_ru_line_count = wp->w_buffer->b_ml.ml_line_count;
#ifdef FEAT_DIFF
	wp->w_ru_topfill = wp->w_topfill;
#endif
    }
}
#endif

#if defined(FEAT_LINEBREAK) || defined(PROTO)
/*
 * Return the width of the 'number' column.
 * Zero when 'number' isn't set.
 * Otherwise it depends on 'numberwidth' and the line count.
 */
    int
number_width(wp)
    win_T	*wp;
{
    int		n;
    linenr_T	lnum;

    if (!wp->w_p_nu)
	return 0;

    lnum = wp->w_buffer->b_ml.ml_line_count;
    if (lnum == wp->w_nrwidth_line_count)
	return wp->w_nrwidth_width;
    wp->w_nrwidth_line_count = lnum;

    n = 0;
    do
    {
        lnum /= 10;
        ++n;
    } while (lnum > 0);

    /* 'numberwidth' gives the minimal width plus one */
    if (n < wp->w_p_nuw - 1)
	n = wp->w_p_nuw - 1;

    wp->w_nrwidth_width = n;
    return n;
}
#endif