summaryrefslogtreecommitdiffstats
path: root/src/highlight.c
blob: 9b3b07244634d4ecf1f4b1b635e4af26def054a0 (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
/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * 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.
 */

/*
 * Highlighting stuff.
 */

#include "vim.h"

#define SG_TERM		1	// term has been set
#define SG_CTERM	2	// cterm has been set
#define SG_GUI		4	// gui has been set
#define SG_LINK		8	// link has been set

#define MAX_SYN_NAME	200

/*
 * The "term", "cterm" and "gui" arguments can be any combination of the
 * following names, separated by commas (but no spaces!).
 */
static char *(hl_name_table[]) =
    {"bold", "standout", "underline",
	"undercurl", "underdouble", "underdotted", "underdashed",
	"italic", "reverse", "inverse", "nocombine", "strikethrough", "NONE"};
static int hl_attr_table[] =
    {HL_BOLD, HL_STANDOUT, HL_UNDERLINE,
	HL_UNDERCURL, HL_UNDERDOUBLE, HL_UNDERDOTTED, HL_UNDERDASHED,
	HL_ITALIC, HL_INVERSE, HL_INVERSE, HL_NOCOMBINE, HL_STRIKETHROUGH, 0};
// length of all attribute names, plus commas, together (and a bit more)
#define MAX_ATTR_LEN 120

#define ATTR_COMBINE(attr_a, attr_b) ((((attr_b) & HL_NOCOMBINE) ? (attr_b) : (attr_a)) | (attr_b))

/*
 * Structure that stores information about a highlight group.
 * The ID of a highlight group is also called group ID.  It is the index in
 * the highlight_ga array PLUS ONE.
 */
typedef struct
{
    char_u	*sg_name;	// highlight group name
    char_u	*sg_name_u;	// uppercase of sg_name
    int		sg_cleared;	// "hi clear" was used
// for normal terminals
    int		sg_term;	// "term=" highlighting attributes
    char_u	*sg_start;	// terminal string for start highl
    char_u	*sg_stop;	// terminal string for stop highl
    int		sg_term_attr;	// Screen attr for term mode
// for color terminals
    int		sg_cterm;	// "cterm=" highlighting attr
    int		sg_cterm_bold;	// bold attr was set for light color
    int		sg_cterm_fg;	// terminal fg color number + 1
    int		sg_cterm_bg;	// terminal bg color number + 1
    int		sg_cterm_ul;	// terminal ul color number + 1
    int		sg_cterm_attr;	// Screen attr for color term mode
    int		sg_cterm_font;	// terminal alternative font (0 for normal)
// for when using the GUI
#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    guicolor_T	sg_gui_fg;	// GUI foreground color handle
    guicolor_T	sg_gui_bg;	// GUI background color handle
    guicolor_T	sg_gui_sp;	// GUI special color handle
#endif
#ifdef FEAT_GUI
    GuiFont	sg_font;	// GUI font handle
#ifdef FEAT_XFONTSET
    GuiFontset	sg_fontset;	// GUI fontset handle
#endif
    char_u	*sg_font_name;  // GUI font or fontset name
    int		sg_gui_attr;    // Screen attr for GUI mode
#endif
#if defined(FEAT_GUI) || defined(FEAT_EVAL)
// Store the sp color name for the GUI or synIDattr()
    int		sg_gui;		// "gui=" highlighting attributes
    char_u	*sg_gui_fg_name;// GUI foreground color name
    char_u	*sg_gui_bg_name;// GUI background color name
    char_u	*sg_gui_sp_name;// GUI special color name
#endif
    int		sg_link;	// link to this highlight group ID
    int		sg_deflink;	// default link; restored in highlight_clear()
    int		sg_set;		// combination of SG_* flags
#ifdef FEAT_EVAL
    sctx_T	sg_deflink_sctx;  // script where the default link was set
    sctx_T	sg_script_ctx;	// script in which the group was last set
#endif
} hl_group_T;

// highlight groups for 'highlight' option
static garray_T highlight_ga;
#define HL_TABLE()	((hl_group_T *)((highlight_ga.ga_data)))

/*
 * An attribute number is the index in attr_table plus ATTR_OFF.
 */
#define ATTR_OFF (HL_ALL + 1)

static void syn_unadd_group(void);
static void set_hl_attr(int idx);
static void highlight_list_one(int id);
static int highlight_list_arg(int id, int didh, int type, int iarg, char_u *sarg, char *name);
static int syn_add_group(char_u *name);
static int hl_has_settings(int idx, int check_link);
static void highlight_clear(int idx);

#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
static void gui_do_one_color(int idx, int do_menu, int do_tooltip);
#endif
#ifdef FEAT_GUI
static int  set_group_colors(char_u *name, guicolor_T *fgp, guicolor_T *bgp, int do_menu, int use_norm, int do_tooltip);
static void hl_do_font(int idx, char_u *arg, int do_normal, int do_menu, int do_tooltip, int free_font);
#endif

/*
 * The default highlight groups.  These are compiled-in for fast startup and
 * they still work when the runtime files can't be found.
 * When making changes here, also change runtime/colors/default.vim!
 * The #ifdefs are needed to reduce the amount of static data.  Helps to make
 * the 16 bit DOS (museum) version compile.
 */
#if defined(FEAT_GUI) || defined(FEAT_EVAL)
# define CENT(a, b) b
#else
# define CENT(a, b) a
#endif
static char *(highlight_init_both[]) = {
    CENT("ErrorMsg term=standout ctermbg=DarkRed ctermfg=White",
	 "ErrorMsg term=standout ctermbg=DarkRed ctermfg=White guibg=Red guifg=White"),
    CENT("IncSearch term=reverse cterm=reverse",
	 "IncSearch term=reverse cterm=reverse gui=reverse"),
    CENT("ModeMsg term=bold cterm=bold",
	 "ModeMsg term=bold cterm=bold gui=bold"),
    CENT("NonText term=bold ctermfg=Blue",
	 "NonText term=bold ctermfg=Blue gui=bold guifg=Blue"),
    CENT("StatusLine term=reverse,bold cterm=reverse,bold",
	 "StatusLine term=reverse,bold cterm=reverse,bold gui=reverse,bold"),
    CENT("StatusLineNC term=reverse cterm=reverse",
	 "StatusLineNC term=reverse cterm=reverse gui=reverse"),
    "default link EndOfBuffer NonText",
    CENT("VertSplit term=reverse cterm=reverse",
	 "VertSplit term=reverse cterm=reverse gui=reverse"),
#ifdef FEAT_CLIPBOARD
    CENT("VisualNOS term=underline,bold cterm=underline,bold",
	 "VisualNOS term=underline,bold cterm=underline,bold gui=underline,bold"),
#endif
#ifdef FEAT_DIFF
    CENT("DiffText term=reverse cterm=bold ctermbg=Red",
	 "DiffText term=reverse cterm=bold ctermbg=Red gui=bold guibg=Red"),
#endif
    CENT("PmenuSbar ctermbg=Grey",
	 "PmenuSbar ctermbg=Grey guibg=Grey"),
    CENT("TabLineSel term=bold cterm=bold",
	 "TabLineSel term=bold cterm=bold gui=bold"),
    CENT("TabLineFill term=reverse cterm=reverse",
	 "TabLineFill term=reverse cterm=reverse gui=reverse"),
#ifdef FEAT_GUI
    "Cursor guibg=fg guifg=bg",
    "lCursor guibg=fg guifg=bg", // should be different, but what?
#endif
    "default link QuickFixLine Search",
    "default link CursorLineSign SignColumn",
    "default link CursorLineFold FoldColumn",
    "default link CurSearch Search",
    "default link PmenuKind Pmenu",
    "default link PmenuKindSel PmenuSel",
    "default link PmenuExtra Pmenu",
    "default link PmenuExtraSel PmenuSel",
    CENT("Normal cterm=NONE", "Normal gui=NONE"),
    NULL
};

// Default colors only used with a light background.
static char *(highlight_init_light[]) = {
    CENT("Directory term=bold ctermfg=DarkBlue",
	 "Directory term=bold ctermfg=DarkBlue guifg=Blue"),
    CENT("LineNr term=underline ctermfg=Brown",
	 "LineNr term=underline ctermfg=Brown guifg=Brown"),
    CENT("CursorLineNr term=bold cterm=underline ctermfg=Brown",
	 "CursorLineNr term=bold cterm=underline ctermfg=Brown gui=bold guifg=Brown"),
    CENT("MoreMsg term=bold ctermfg=DarkGreen",
	 "MoreMsg term=bold ctermfg=DarkGreen gui=bold guifg=SeaGreen"),
    CENT("Question term=standout ctermfg=DarkGreen",
	 "Question term=standout ctermfg=DarkGreen gui=bold guifg=SeaGreen"),
    CENT("Search term=reverse ctermbg=Yellow ctermfg=NONE",
	 "Search term=reverse ctermbg=Yellow ctermfg=NONE guibg=Yellow guifg=NONE"),
#ifdef FEAT_SPELL
    CENT("SpellBad term=reverse ctermbg=LightRed",
	 "SpellBad term=reverse ctermbg=LightRed guisp=Red gui=undercurl"),
    CENT("SpellCap term=reverse ctermbg=LightBlue",
	 "SpellCap term=reverse ctermbg=LightBlue guisp=Blue gui=undercurl"),
    CENT("SpellRare term=reverse ctermbg=LightMagenta",
	 "SpellRare term=reverse ctermbg=LightMagenta guisp=Magenta gui=undercurl"),
    CENT("SpellLocal term=underline ctermbg=Cyan",
	 "SpellLocal term=underline ctermbg=Cyan guisp=DarkCyan gui=undercurl"),
#endif
    CENT("PmenuThumb ctermbg=Black",
	 "PmenuThumb ctermbg=Black guibg=Black"),
    CENT("Pmenu ctermbg=LightMagenta ctermfg=Black",
	 "Pmenu ctermbg=LightMagenta ctermfg=Black guibg=LightMagenta"),
    CENT("PmenuSel ctermbg=LightGrey ctermfg=Black",
	 "PmenuSel ctermbg=LightGrey ctermfg=Black guibg=Grey"),
    CENT("SpecialKey term=bold ctermfg=DarkBlue",
	 "SpecialKey term=bold ctermfg=DarkBlue guifg=Blue"),
    CENT("Title term=bold ctermfg=DarkMagenta",
	 "Title term=bold ctermfg=DarkMagenta gui=bold guifg=Magenta"),
    CENT("WarningMsg term=standout ctermfg=DarkRed",
	 "WarningMsg term=standout ctermfg=DarkRed guifg=Red"),
    CENT("WildMenu term=standout ctermbg=Yellow ctermfg=Black",
	 "WildMenu term=standout ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black"),
#ifdef FEAT_FOLDING
    CENT("Folded term=standout ctermbg=Grey ctermfg=DarkBlue",
	 "Folded term=standout ctermbg=Grey ctermfg=DarkBlue guibg=LightGrey guifg=DarkBlue"),
    CENT("FoldColumn term=standout ctermbg=Grey ctermfg=DarkBlue",
	 "FoldColumn term=standout ctermbg=Grey ctermfg=DarkBlue guibg=Grey guifg=DarkBlue"),
#endif
#ifdef FEAT_SIGNS
    CENT("SignColumn term=standout ctermbg=Grey ctermfg=DarkBlue",
	 "SignColumn term=standout ctermbg=Grey ctermfg=DarkBlue guibg=Grey guifg=DarkBlue"),
#endif
    CENT("Visual ctermbg=Grey ctermfg=Black",
	 "Visual ctermbg=Grey ctermfg=Black guibg=LightGrey guifg=Black"),
#ifdef FEAT_DIFF
    CENT("DiffAdd term=bold ctermbg=LightBlue",
	 "DiffAdd term=bold ctermbg=LightBlue guibg=LightBlue"),
    CENT("DiffChange term=bold ctermbg=LightMagenta",
	 "DiffChange term=bold ctermbg=LightMagenta guibg=LightMagenta"),
    CENT("DiffDelete term=bold ctermfg=Blue ctermbg=LightCyan",
	 "DiffDelete term=bold ctermfg=Blue ctermbg=LightCyan gui=bold guifg=Blue guibg=LightCyan"),
#endif
    CENT("TabLine term=underline cterm=underline ctermfg=black ctermbg=LightGrey",
	 "TabLine term=underline cterm=underline ctermfg=black ctermbg=LightGrey gui=underline guibg=LightGrey"),
#ifdef FEAT_SYN_HL
    CENT("CursorColumn term=reverse ctermbg=LightGrey",
	 "CursorColumn term=reverse ctermbg=LightGrey guibg=Grey90"),
    CENT("CursorLine term=underline cterm=underline",
	 "CursorLine term=underline cterm=underline guibg=Grey90"),
    CENT("ColorColumn term=reverse ctermbg=LightRed",
	 "ColorColumn term=reverse ctermbg=LightRed guibg=LightRed"),
#endif
#ifdef FEAT_CONCEAL
    CENT("Conceal ctermbg=DarkGrey ctermfg=LightGrey",
	 "Conceal ctermbg=DarkGrey ctermfg=LightGrey guibg=DarkGrey guifg=LightGrey"),
#endif
    CENT("MatchParen term=reverse ctermbg=Cyan",
	 "MatchParen term=reverse ctermbg=Cyan guibg=Cyan"),
#ifdef FEAT_TERMINAL
    CENT("StatusLineTerm term=reverse,bold cterm=bold ctermfg=White ctermbg=DarkGreen",
	 "StatusLineTerm term=reverse,bold cterm=bold ctermfg=White ctermbg=DarkGreen gui=bold guifg=bg guibg=DarkGreen"),
    CENT("StatusLineTermNC term=reverse ctermfg=White ctermbg=DarkGreen",
	 "StatusLineTermNC term=reverse ctermfg=White ctermbg=DarkGreen guifg=bg guibg=DarkGreen"),
#endif
#ifdef FEAT_MENU
    CENT("ToolbarLine term=underline ctermbg=LightGrey",
	 "ToolbarLine term=underline ctermbg=LightGrey guibg=LightGrey"),
    CENT("ToolbarButton cterm=bold ctermfg=White ctermbg=DarkGrey",
	 "ToolbarButton cterm=bold ctermfg=White ctermbg=DarkGrey gui=bold guifg=White guibg=Grey40"),
#endif
    NULL
};

// Default colors only used with a dark background.
static char *(highlight_init_dark[]) = {
    CENT("Directory term=bold ctermfg=LightCyan",
	 "Directory term=bold ctermfg=LightCyan guifg=Cyan"),
    CENT("LineNr term=underline ctermfg=Yellow",
	 "LineNr term=underline ctermfg=Yellow guifg=Yellow"),
    CENT("CursorLineNr term=bold cterm=underline ctermfg=Yellow",
	 "CursorLineNr term=bold cterm=underline ctermfg=Yellow gui=bold guifg=Yellow"),
    CENT("MoreMsg term=bold ctermfg=LightGreen",
	 "MoreMsg term=bold ctermfg=LightGreen gui=bold guifg=SeaGreen"),
    CENT("Question term=standout ctermfg=LightGreen",
	 "Question term=standout ctermfg=LightGreen gui=bold guifg=Green"),
    CENT("Search term=reverse ctermbg=Yellow ctermfg=Black",
	 "Search term=reverse ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black"),
    CENT("SpecialKey term=bold ctermfg=LightBlue",
	 "SpecialKey term=bold ctermfg=LightBlue guifg=Cyan"),
#ifdef FEAT_SPELL
    CENT("SpellBad term=reverse ctermbg=Red",
	 "SpellBad term=reverse ctermbg=Red guisp=Red gui=undercurl"),
    CENT("SpellCap term=reverse ctermbg=Blue",
	 "SpellCap term=reverse ctermbg=Blue guisp=Blue gui=undercurl"),
    CENT("SpellRare term=reverse ctermbg=Magenta",
	 "SpellRare term=reverse ctermbg=Magenta guisp=Magenta gui=undercurl"),
    CENT("SpellLocal term=underline ctermbg=Cyan",
	 "SpellLocal term=underline ctermbg=Cyan guisp=Cyan gui=undercurl"),
#endif
    CENT("PmenuThumb ctermbg=White",
	 "PmenuThumb ctermbg=White guibg=White"),
    CENT("Pmenu ctermbg=Magenta ctermfg=Black",
	 "Pmenu ctermbg=Magenta ctermfg=Black guibg=Magenta"),
    CENT("PmenuSel ctermbg=Black ctermfg=DarkGrey",
	 "PmenuSel ctermbg=Black ctermfg=DarkGrey guibg=DarkGrey"),
    CENT("Title term=bold ctermfg=LightMagenta",
	 "Title term=bold ctermfg=LightMagenta gui=bold guifg=Magenta"),
    CENT("WarningMsg term=standout ctermfg=LightRed",
	 "WarningMsg term=standout ctermfg=LightRed guifg=Red"),
    CENT("WildMenu term=standout ctermbg=Yellow ctermfg=Black",
	 "WildMenu term=standout ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black"),
#ifdef FEAT_FOLDING
    CENT("Folded term=standout ctermbg=DarkGrey ctermfg=Cyan",
	 "Folded term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=DarkGrey guifg=Cyan"),
    CENT("FoldColumn term=standout ctermbg=DarkGrey ctermfg=Cyan",
	 "FoldColumn term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=Grey guifg=Cyan"),
#endif
#ifdef FEAT_SIGNS
    CENT("SignColumn term=standout ctermbg=DarkGrey ctermfg=Cyan",
	 "SignColumn term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=Grey guifg=Cyan"),
#endif
    CENT("Visual ctermbg=Grey ctermfg=Black",
	 "Visual ctermbg=Grey ctermfg=Black guibg=#575757 guifg=LightGrey"),
#ifdef FEAT_DIFF
    CENT("DiffAdd term=bold ctermbg=DarkBlue",
	 "DiffAdd term=bold ctermbg=DarkBlue guibg=DarkBlue"),
    CENT("DiffChange term=bold ctermbg=DarkMagenta",
	 "DiffChange term=bold ctermbg=DarkMagenta guibg=DarkMagenta"),
    CENT("DiffDelete term=bold ctermfg=Blue ctermbg=DarkCyan",
	 "DiffDelete term=bold ctermfg=Blue ctermbg=DarkCyan gui=bold guifg=Blue guibg=DarkCyan"),
#endif
    CENT("TabLine term=underline cterm=underline ctermfg=white ctermbg=DarkGrey",
	 "TabLine term=underline cterm=underline ctermfg=white ctermbg=DarkGrey gui=underline guibg=DarkGrey"),
#ifdef FEAT_SYN_HL
    CENT("CursorColumn term=reverse ctermbg=DarkGrey",
	 "CursorColumn term=reverse ctermbg=DarkGrey guibg=Grey40"),
    CENT("CursorLine term=underline cterm=underline",
	 "CursorLine term=underline cterm=underline guibg=Grey40"),
    CENT("ColorColumn term=reverse ctermbg=DarkRed",
	 "ColorColumn term=reverse ctermbg=DarkRed guibg=DarkRed"),
#endif
    CENT("MatchParen term=reverse ctermbg=DarkCyan",
	 "MatchParen term=reverse ctermbg=DarkCyan guibg=DarkCyan"),
#ifdef FEAT_CONCEAL
    CENT("Conceal ctermbg=DarkGrey ctermfg=LightGrey",
	 "Conceal ctermbg=DarkGrey ctermfg=LightGrey guibg=DarkGrey guifg=LightGrey"),
#endif
#ifdef FEAT_TERMINAL
    CENT("StatusLineTerm term=reverse,bold cterm=bold ctermfg=Black ctermbg=LightGreen",
	 "StatusLineTerm term=reverse,bold cterm=bold ctermfg=Black ctermbg=LightGreen gui=bold guifg=bg guibg=LightGreen"),
    CENT("StatusLineTermNC term=reverse ctermfg=Black ctermbg=LightGreen",
	 "StatusLineTermNC term=reverse ctermfg=Black ctermbg=LightGreen guifg=bg guibg=LightGreen"),
#endif
#ifdef FEAT_MENU
    CENT("ToolbarLine term=underline ctermbg=DarkGrey",
	 "ToolbarLine term=underline ctermbg=DarkGrey guibg=Grey50"),
    CENT("ToolbarButton cterm=bold ctermfg=Black ctermbg=LightGrey",
	 "ToolbarButton cterm=bold ctermfg=Black ctermbg=LightGrey gui=bold guifg=Black guibg=LightGrey"),
#endif
    NULL
};

#if defined(FEAT_SYN_HL) || defined(PROTO)
/*
 * Returns the number of highlight groups.
 */
    int
highlight_num_groups(void)
{
    return highlight_ga.ga_len;
}

/*
 * Returns the name of a highlight group.
 */
    char_u *
highlight_group_name(int id)
{
    return HL_TABLE()[id].sg_name;
}

/*
 * Returns the ID of the link to a highlight group.
 */
    int
highlight_link_id(int id)
{
    return HL_TABLE()[id].sg_link;
}
#endif

    void
init_highlight(
    int		both,	    // include groups where 'bg' doesn't matter
    int		reset)	    // clear group first
{
    int		i;
    char	**pp;
    static int	had_both = FALSE;
#ifdef FEAT_EVAL
    char_u	*p;

    // Try finding the color scheme file.  Used when a color file was loaded
    // and 'background' or 't_Co' is changed.
    p = get_var_value((char_u *)"g:colors_name");
    if (p != NULL)
    {
	// The value of g:colors_name could be freed when sourcing the script,
	// making "p" invalid, so copy it.
	char_u *copy_p = vim_strsave(p);
	int    r;

	if (copy_p != NULL)
	{
	    r = load_colors(copy_p);
	    vim_free(copy_p);
	    if (r == OK)
		return;
	}
    }

#endif

    // Didn't use a color file, use the compiled-in colors.
    if (both)
    {
	had_both = TRUE;
	pp = highlight_init_both;
	for (i = 0; pp[i] != NULL; ++i)
	    do_highlight((char_u *)pp[i], reset, TRUE);
    }
    else if (!had_both)
	// Don't do anything before the call with both == TRUE from main().
	// Not everything has been setup then, and that call will overrule
	// everything anyway.
	return;

    if (*p_bg == 'l')
	pp = highlight_init_light;
    else
	pp = highlight_init_dark;
    for (i = 0; pp[i] != NULL; ++i)
	do_highlight((char_u *)pp[i], reset, TRUE);

    // Reverse looks ugly, but grey may not work for less than 8 colors.  Thus
    // let it depend on the number of colors available.
    if (t_colors < 8)
	do_highlight((char_u *)"Visual term=reverse cterm=reverse ctermbg=NONE ctermfg=NONE",
		FALSE, TRUE);
    // With 8 colors brown is equal to yellow, need to use black for Search fg
    // to avoid Statement highlighted text disappears.
    // Clear the attributes, needed when changing the t_Co value.
    if (t_colors <= 8)
    {
	if (*p_bg == 'l')
	    do_highlight((char_u *)"Search ctermfg=black", FALSE, TRUE);
    }

#ifdef FEAT_SYN_HL
    // If syntax highlighting is enabled load the highlighting for it.
    if (get_var_value((char_u *)"g:syntax_on") != NULL)
    {
	static int	recursive = 0;

	if (recursive >= 5)
	    emsg(_(e_recursive_loop_loading_syncolor_vim));
	else
	{
	    ++recursive;
	    (void)source_runtime((char_u *)"syntax/syncolor.vim", DIP_ALL);
	    --recursive;
	}
    }
#endif
}

#if defined(FEAT_EVAL) && (defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS))
/*
 * Load a default color list. Intended to support legacy color names but allows
 * the user to override the color values. Only loaded once.
 */
    static void
load_default_colors_lists(void)
{
    // Lacking a default color list isn't the end of the world but it is likely
    // an inconvenience so users should know when it is missing.
    if (source_runtime((char_u *)"colors/lists/default.vim", DIP_ALL) != OK)
	msg("failed to load colors/lists/default.vim");
}
#endif

/*
 * Load color file "name".
 * Return OK for success, FAIL for failure.
 */
    int
load_colors(char_u *name)
{
    char_u	*buf;
    int		retval = FAIL;
    static int	recursive = FALSE;

    // When being called recursively, this is probably because setting
    // 'background' caused the highlighting to be reloaded.  This means it is
    // working, thus we should return OK.
    if (recursive)
	return OK;

    recursive = TRUE;
    buf = alloc(STRLEN(name) + 12);
    if (buf != NULL)
    {
#if defined(FEAT_EVAL) && (defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS))
	load_default_colors_lists();
#endif
	apply_autocmds(EVENT_COLORSCHEMEPRE, name,
					       curbuf->b_fname, FALSE, curbuf);
	sprintf((char *)buf, "colors/%s.vim", name);
	retval = source_runtime(buf, DIP_START + DIP_OPT);
	vim_free(buf);
	if (retval == OK)
	    apply_autocmds(EVENT_COLORSCHEME, name, curbuf->b_fname,
								FALSE, curbuf);
    }
    recursive = FALSE;

    return retval;
}

static char *(color_names[28]) = {
	    "Black", "DarkBlue", "DarkGreen", "DarkCyan",
	    "DarkRed", "DarkMagenta", "Brown", "DarkYellow",
	    "Gray", "Grey", "LightGray", "LightGrey",
	    "DarkGray", "DarkGrey",
	    "Blue", "LightBlue", "Green", "LightGreen",
	    "Cyan", "LightCyan", "Red", "LightRed", "Magenta",
	    "LightMagenta", "Yellow", "LightYellow", "White", "NONE"};
	    // indices:
	    // 0, 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
static int color_numbers_16[28] = {0, 1, 2, 3,
				 4, 5, 6, 6,
				 7, 7, 7, 7,
				 8, 8,
				 9, 9, 10, 10,
				 11, 11, 12, 12, 13,
				 13, 14, 14, 15, -1};
// for xterm with 88 colors...
static int color_numbers_88[28] = {0, 4, 2, 6,
				 1, 5, 32, 72,
				 84, 84, 7, 7,
				 82, 82,
				 12, 43, 10, 61,
				 14, 63, 9, 74, 13,
				 75, 11, 78, 15, -1};
// for xterm with 256 colors...
static int color_numbers_256[28] = {0, 4, 2, 6,
				 1, 5, 130, 3,
				 248, 248, 7, 7,
				 242, 242,
				 12, 81, 10, 121,
				 14, 159, 9, 224, 13,
				 225, 11, 229, 15, -1};
// for terminals with less than 16 colors...
static int color_numbers_8[28] = {0, 4, 2, 6,
				 1, 5, 3, 3,
				 7, 7, 7, 7,
				 0+8, 0+8,
				 4+8, 4+8, 2+8, 2+8,
				 6+8, 6+8, 1+8, 1+8, 5+8,
				 5+8, 3+8, 3+8, 7+8, -1};

/*
 * Lookup the "cterm" value to be used for color with index "idx" in
 * color_names[].
 * "boldp" will be set to TRUE or FALSE for a foreground color when using 8
 * colors, otherwise it will be unchanged.
 */
    static int
lookup_color(int idx, int foreground, int *boldp)
{
    int		color = color_numbers_16[idx];
    char_u	*p;

    // Use the _16 table to check if it's a valid color name.
    if (color < 0)
	return -1;

    if (t_colors == 8)
    {
	// t_Co is 8: use the 8 colors table
#if defined(__QNXNTO__)
	// On qnx, the 8 & 16 color arrays are the same
	if (STRNCMP(T_NAME, "qansi", 5) == 0)
	    color = color_numbers_16[idx];
	else
#endif
	    color = color_numbers_8[idx];
	if (foreground)
	{
	    // set/reset bold attribute to get light foreground
	    // colors (on some terminals, e.g. "linux")
	    if (color & 8)
		*boldp = TRUE;
	    else
		*boldp = FALSE;
	}
	color &= 7;	// truncate to 8 colors
    }
    else if (t_colors == 16 || t_colors == 88
					   || t_colors >= 256)
    {
	// Guess: if the termcap entry ends in 'm', it is
	// probably an xterm-like terminal.  Use the changed
	// order for colors.
	if (*T_CAF != NUL)
	    p = T_CAF;
	else
	    p = T_CSF;
	if (*p != NUL && (t_colors > 256
			      || *(p + STRLEN(p) - 1) == 'm'))
	{
	    if (t_colors == 88)
		color = color_numbers_88[idx];
	    else if (t_colors >= 256)
		color = color_numbers_256[idx];
	    else
		color = color_numbers_8[idx];
	}
#ifdef FEAT_TERMRESPONSE
	if (t_colors >= 256 && color == 15 && is_mac_terminal)
	    // Terminal.app has a bug: 15 is light grey. Use white
	    // from the color cube instead.
	    color = 231;
#endif
    }
    return color;
}

/*
 * Link highlight group 'from_hg' to 'to_hg'.
 * 'dodefault' is set to TRUE for ":highlight default link".
 * 'forceit' is set to TRUE for ":highlight! link"
 * 'init' is set to TRUE when initializing all the highlight groups.
 */
    static void
highlight_group_link(
	char_u	*from_hg,
	int	from_len,
	char_u	*to_hg,
	int	to_len,
	int	dodefault,
	int	forceit,
	int	init)
{
    int		from_id;
    int		to_id;
    hl_group_T	*hlgroup = NULL;

    from_id = syn_check_group(from_hg, from_len);
    if (STRNCMP(to_hg, "NONE", 4) == 0)
	to_id = 0;
    else
	to_id = syn_check_group(to_hg, to_len);

    if (from_id > 0)
    {
	hlgroup = &HL_TABLE()[from_id - 1];
	if (dodefault && (forceit || hlgroup->sg_deflink == 0))
	{
	    hlgroup->sg_deflink = to_id;
#ifdef FEAT_EVAL
	    hlgroup->sg_deflink_sctx = current_sctx;
	    hlgroup->sg_deflink_sctx.sc_lnum += SOURCING_LNUM;
#endif
	}
    }

    if (from_id > 0 && (!init || hlgroup->sg_set == 0))
    {
	// Don't allow a link when there already is some highlighting
	// for the group, unless '!' is used
	if (to_id > 0 && !forceit && !init
		&& hl_has_settings(from_id - 1, dodefault))
	{
	    if (SOURCING_NAME == NULL && !dodefault)
		emsg(_(e_group_has_settings_highlight_link_ignored));
	}
	else if (hlgroup->sg_link != to_id
#ifdef FEAT_EVAL
		|| hlgroup->sg_script_ctx.sc_sid != current_sctx.sc_sid
#endif
		|| hlgroup->sg_cleared)
	{
	    if (!init)
		hlgroup->sg_set |= SG_LINK;
	    hlgroup->sg_link = to_id;
#ifdef FEAT_EVAL
	    hlgroup->sg_script_ctx = current_sctx;
	    hlgroup->sg_script_ctx.sc_lnum += SOURCING_LNUM;
#endif
	    hlgroup->sg_cleared = FALSE;
	    redraw_all_later(UPD_SOME_VALID);

	    // Only call highlight_changed() once after multiple changes.
	    need_highlight_changed = TRUE;
	}
    }

}

/*
 * Reset all highlighting to the defaults. Removes all highlighting for the
 * groups added by the user.
 */
    static void
highlight_reset_all(void)
{
    int		idx;

#ifdef FEAT_GUI
    // First, we do not destroy the old values, but allocate the new
    // ones and update the display. THEN we destroy the old values.
    // If we destroy the old values first, then the old values
    // (such as GuiFont's or GuiFontset's) will still be displayed but
    // invalid because they were free'd.
    if (gui.in_use)
    {
# ifdef FEAT_BEVAL_TIP
	gui_init_tooltip_font();
# endif
# if defined(FEAT_MENU) && defined(FEAT_GUI_MOTIF)
	gui_init_menu_font();
# endif
    }
# if defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_X11)
    gui_mch_def_colors();
# endif
# ifdef FEAT_GUI_X11
#  ifdef FEAT_MENU

    // This only needs to be done when there is no Menu highlight
    // group defined by default, which IS currently the case.
    gui_mch_new_menu_colors();
#  endif
    if (gui.in_use)
    {
	gui_new_scrollbar_colors();
#  ifdef FEAT_BEVAL_GUI
	gui_mch_new_tooltip_colors();
#  endif
#  ifdef FEAT_MENU
	gui_mch_new_menu_font();
#  endif
    }
# endif

    // Ok, we're done allocating the new default graphics items.
    // The screen should already be refreshed at this point.
    // It is now Ok to clear out the old data.
#endif
#ifdef FEAT_EVAL
    do_unlet((char_u *)"g:colors_name", TRUE);
#endif
    restore_cterm_colors();

    // Clear all default highlight groups and load the defaults.
    for (idx = 0; idx < highlight_ga.ga_len; ++idx)
	highlight_clear(idx);
    init_highlight(TRUE, TRUE);
#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    if (USE_24BIT)
	highlight_gui_started();
    else
#endif
	highlight_changed();
    redraw_later_clear();
}

/*
 * Set the 'term' or 'cterm' or 'gui' attributes for the highlight group at
 * index 'idx'.
 * 'key' is one of 'TERM' or 'CTERM' or 'GUI'
 * 'arg' is the list of attribute names separated by comma.
 * 'init' is set to TRUE when initializing all the highlight groups.
 * Returns TRUE if the attributes are set.
 */
    static int
highlight_set_termgui_attr(int idx, char_u *key, char_u *arg, int init)
{
    int		attr;
    int		off;
    long	i;
    int		len;

    attr = 0;
    off = 0;
    while (arg[off] != NUL)
    {
	for (i = ARRAY_LENGTH(hl_attr_table); --i >= 0; )
	{
	    len = (int)STRLEN(hl_name_table[i]);
	    if (STRNICMP(arg + off, hl_name_table[i], len) == 0)
	    {
		attr |= hl_attr_table[i];
		off += len;
		break;
	    }
	}
	if (i < 0)
	{
	    semsg(_(e_illegal_value_str), arg);
	    return FALSE;
	}
	if (arg[off] == ',')		// another one follows
	    ++off;
    }
    if (*key == 'T')
    {
	if (!init || !(HL_TABLE()[idx].sg_set & SG_TERM))
	{
	    if (!init)
		HL_TABLE()[idx].sg_set |= SG_TERM;
	    HL_TABLE()[idx].sg_term = attr;
	}
    }
    else if (*key == 'C')
    {
	if (!init || !(HL_TABLE()[idx].sg_set & SG_CTERM))
	{
	    if (!init)
		HL_TABLE()[idx].sg_set |= SG_CTERM;
	    HL_TABLE()[idx].sg_cterm = attr;
	    HL_TABLE()[idx].sg_cterm_bold = FALSE;
	}
    }
#if defined(FEAT_GUI) || defined(FEAT_EVAL)
    else
    {
	if (!init || !(HL_TABLE()[idx].sg_set & SG_GUI))
	{
	    if (!init)
		HL_TABLE()[idx].sg_set |= SG_GUI;
	    HL_TABLE()[idx].sg_gui = attr;
	}
    }
#endif

    return TRUE;
}

#ifdef FEAT_GUI
/*
 * Set the font for the highlight group at 'idx'.
 * 'arg' is the font name.
 * Returns TRUE if the font is changed.
 */
    static int
highlight_set_font(
	int	idx,
	char_u	*arg,
	int	is_normal_group,
	int	is_menu_group,
	int	is_tooltip_group)
{
    int		did_change = FALSE;

    // in non-GUI fonts are simply ignored
    if (HL_TABLE()[idx].sg_font_name != NULL
	    && STRCMP(HL_TABLE()[idx].sg_font_name, arg) == 0)
    {
	// Font name didn't change, ignore.
    }
    else if (!gui.shell_created)
    {
	// GUI not started yet, always accept the name.
	vim_free(HL_TABLE()[idx].sg_font_name);
	HL_TABLE()[idx].sg_font_name = vim_strsave(arg);
	did_change = TRUE;
    }
    else
    {
	GuiFont temp_sg_font = HL_TABLE()[idx].sg_font;
# ifdef FEAT_XFONTSET
	GuiFontset temp_sg_fontset = HL_TABLE()[idx].sg_fontset;
# endif
	// First, save the current font/fontset.
	// Then try to allocate the font/fontset.
	// If the allocation fails, HL_TABLE()[idx].sg_font OR
	// sg_fontset will be set to NOFONT or NOFONTSET respectively.

	HL_TABLE()[idx].sg_font = NOFONT;
# ifdef FEAT_XFONTSET
	HL_TABLE()[idx].sg_fontset = NOFONTSET;
# endif
	hl_do_font(idx, arg, is_normal_group, is_menu_group,
		is_tooltip_group, FALSE);

# ifdef FEAT_XFONTSET
	if (HL_TABLE()[idx].sg_fontset != NOFONTSET)
	{
	    // New fontset was accepted. Free the old one, if there
	    // was one.
	    gui_mch_free_fontset(temp_sg_fontset);
	    vim_free(HL_TABLE()[idx].sg_font_name);
	    HL_TABLE()[idx].sg_font_name = vim_strsave(arg);
	    did_change = TRUE;
	}
	else
	    HL_TABLE()[idx].sg_fontset = temp_sg_fontset;
# endif
	if (HL_TABLE()[idx].sg_font != NOFONT)
	{
	    // New font was accepted. Free the old one, if there was
	    // one.
	    gui_mch_free_font(temp_sg_font);
	    vim_free(HL_TABLE()[idx].sg_font_name);
	    HL_TABLE()[idx].sg_font_name = vim_strsave(arg);
	    did_change = TRUE;
	}
	else
	    HL_TABLE()[idx].sg_font = temp_sg_font;
    }

    return did_change;
}
#endif

/*
 * Set the cterm foreground color for the Normal highlight group to "color" and
 * the bold attribute to "bold".
 */
    static void
hl_set_ctermfg_normal_group(int color, int bold)
{
    cterm_normal_fg_color = color + 1;
    cterm_normal_fg_bold = bold;
#ifdef FEAT_GUI
    // Don't do this if the GUI is used.
    if (!gui.in_use && !gui.starting)
#endif
    {
	set_must_redraw(UPD_CLEAR);
	if (termcap_active && color >= 0)
	    term_fg_color(color);
    }
}

/*
 * Set the cterm foreground color for the highlight group at 'idx' to 'color'.
 */
    static void
highlight_set_ctermfg(int idx, int color, int is_normal_group)
{
    HL_TABLE()[idx].sg_cterm_fg = color + 1;
    if (is_normal_group)
	hl_set_ctermfg_normal_group(color,
					(HL_TABLE()[idx].sg_cterm & HL_BOLD));
}

/*
 * Set the cterm background color for the Normal highlight group to "color".
 */
    static void
hl_set_ctermbg_normal_group(int color)
{
    cterm_normal_bg_color = color + 1;
#ifdef FEAT_GUI
    // Don't mess with 'background' if the GUI is used.
    if (!gui.in_use && !gui.starting)
#endif
    {
	set_must_redraw(UPD_CLEAR);
	if (color >= 0)
	{
	    int dark = -1;

	    if (termcap_active)
		term_bg_color(color);
	    if (t_colors < 16)
		dark = (color == 0 || color == 4);
	    // Limit the heuristic to the standard 16 colors
	    else if (color < 16)
		dark = (color < 7 || color == 8);
	    // Set the 'background' option if the value is
	    // wrong.
	    if (dark != -1
		    && dark != (*p_bg == 'd')
		    && !option_was_set((char_u *)"bg"))
	    {
		set_option_value_give_err((char_u *)"bg",
			0L, (char_u *)(dark ? "dark" : "light"), 0);
		reset_option_was_set((char_u *)"bg");
	    }
	}
    }
}

/*
 * Set the cterm background color for the highlight group at 'idx' to 'color'.
 */
    static void
highlight_set_ctermbg(int idx, int color, int is_normal_group)
{
    HL_TABLE()[idx].sg_cterm_bg = color + 1;
    if (is_normal_group)
	hl_set_ctermbg_normal_group(color);
}

/*
 * Set the cterm underline color for the Normal highlight group to "color".
 */
    static void
hl_set_ctermul_normal_group(int color)
{
    cterm_normal_ul_color = color + 1;
#ifdef FEAT_GUI
    // Don't do this if the GUI is used.
    if (!gui.in_use && !gui.starting)
#endif
    {
	set_must_redraw(UPD_CLEAR);
	if (termcap_active && color >= 0)
	    term_ul_color(color);
    }
}

/*
 * Set the cterm underline color for the highlight group at 'idx' to 'color'.
 */
    static void
highlight_set_ctermul(int idx, int color, int is_normal_group)
{
    HL_TABLE()[idx].sg_cterm_ul = color + 1;
    if (is_normal_group)
	hl_set_ctermul_normal_group(color);
}

/*
 * Set the cterm font for the highlight group at 'idx'.
 * 'arg' is the color name or the numeric value as a string.
 * 'init' is set to TRUE when initializing highlighting.
 * Called for the ":highlight" command and the "hlset()" function.
 *
 * Returns TRUE if the font is set.
 */
    static int
highlight_set_cterm_font(
	int	idx,
	char_u	*arg,
	int	init)
{
    int		font;

    if (init && (HL_TABLE()[idx].sg_set & SG_CTERM))
	return FALSE;

    if (!init)
	HL_TABLE()[idx].sg_set |= SG_CTERM;

    if (VIM_ISDIGIT(*arg))
	font = atoi((char *)arg);
    else if (STRICMP(arg, "NONE") == 0)
	font = -1;
    else
	return FALSE;

    HL_TABLE()[idx].sg_cterm_font = font + 1;
    return TRUE;
}

/*
 * Set the cterm fg/bg/ul color for the highlight group at 'idx'.
 * 'key' is one of 'CTERMFG' or 'CTERMBG' or 'CTERMUL'.
 * 'keystart' is the color name/value.
 * 'arg' is the color name or the numeric value as a string.
 * 'is_normal_group' is set if the highlight group is 'NORMAL'
 * 'init' is set to TRUE when initializing highlighting.
 * Called for the ":highlight" command and the "hlset()" function.
 *
 * Returns TRUE if the color is set.
 */
    static int
highlight_set_cterm_color(
	int	idx,
	char_u	*key,
	char_u	*key_start,
	char_u	*arg,
	int	is_normal_group,
	int	init)
{
    int		color;
    long	i;
    int		off;

    if (init && (HL_TABLE()[idx].sg_set & SG_CTERM))
	return FALSE;

    if (!init)
	HL_TABLE()[idx].sg_set |= SG_CTERM;

    // When setting the foreground color, and previously the "bold"
    // flag was set for a light color, reset it now
    if (key[5] == 'F' && HL_TABLE()[idx].sg_cterm_bold)
    {
	HL_TABLE()[idx].sg_cterm &= ~HL_BOLD;
	HL_TABLE()[idx].sg_cterm_bold = FALSE;
    }

    if (VIM_ISDIGIT(*arg))
	color = atoi((char *)arg);
    else if (STRICMP(arg, "fg") == 0)
    {
	if (cterm_normal_fg_color)
	    color = cterm_normal_fg_color - 1;
	else
	{
	    emsg(_(e_fg_color_unknown));
	    return FALSE;
	}
    }
    else if (STRICMP(arg, "bg") == 0)
    {
	if (cterm_normal_bg_color > 0)
	    color = cterm_normal_bg_color - 1;
	else
	{
	    emsg(_(e_bg_color_unknown));
	    return FALSE;
	}
    }
    else if (STRICMP(arg, "ul") == 0)
    {
	if (cterm_normal_ul_color > 0)
	    color = cterm_normal_ul_color - 1;
	else
	{
	    emsg(_(e_ul_color_unknown));
	    return FALSE;
	}
    }
    else
    {
	int bold = MAYBE;

	// reduce calls to STRICMP a bit, it can be slow
	off = TOUPPER_ASC(*arg);
	for (i = ARRAY_LENGTH(color_names); --i >= 0; )
	    if (off == color_names[i][0]
		    && STRICMP(arg + 1, color_names[i] + 1) == 0)
		break;
	if (i < 0)
	{
	    semsg(_(e_color_name_or_number_not_recognized_str), key_start);
	    return FALSE;
	}

	color = lookup_color(i, key[5] == 'F', &bold);

	// set/reset bold attribute to get light foreground
	// colors (on some terminals, e.g. "linux")
	if (bold == TRUE)
	{
	    HL_TABLE()[idx].sg_cterm |= HL_BOLD;
	    HL_TABLE()[idx].sg_cterm_bold = TRUE;
	}
	else if (bold == FALSE)
	    HL_TABLE()[idx].sg_cterm &= ~HL_BOLD;
    }

    // Add one to the argument, to avoid zero.  Zero is used for
    // "NONE", then "color" is -1.
    if (key[5] == 'F')
	highlight_set_ctermfg(idx, color, is_normal_group);
    else if (key[5] == 'B')
	highlight_set_ctermbg(idx, color, is_normal_group);
    else // ctermul
	highlight_set_ctermul(idx, color, is_normal_group);

    return TRUE;
}

#if defined(FEAT_GUI) || defined(FEAT_EVAL)
/*
 * Set the GUI foreground color for the highlight group at 'idx'.
 * Returns TRUE if the color is set.
 */
    static int
highlight_set_guifg(
	int	idx,
	char_u	*arg,
	int	is_menu_group UNUSED,
	int	is_scrollbar_group UNUSED,
	int	is_tooltip_group UNUSED,
	int	*do_colors UNUSED,
	int	init)
{
# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    long	i;
# endif
    char_u	**namep;
    int		did_change = FALSE;

    if (init && (HL_TABLE()[idx].sg_set & SG_GUI))
	return FALSE;

    namep = &HL_TABLE()[idx].sg_gui_fg_name;
    if (!init)
	HL_TABLE()[idx].sg_set |= SG_GUI;

# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    // In GUI guifg colors are only used when recognized
    i = color_name2handle(arg);
    if (i != INVALCOLOR || STRCMP(arg, "NONE") == 0 || !USE_24BIT)
    {
	HL_TABLE()[idx].sg_gui_fg = i;
# endif
	if (*namep == NULL || STRCMP(*namep, arg) != 0)
	{
	    vim_free(*namep);
	    if (STRCMP(arg, "NONE") != 0)
		*namep = vim_strsave(arg);
	    else
		*namep = NULL;
	    did_change = TRUE;
	}
# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
#  ifdef FEAT_GUI_X11
	if (is_menu_group && gui.menu_fg_pixel != i)
	{
	    gui.menu_fg_pixel = i;
	    *do_colors = TRUE;
	}
	if (is_scrollbar_group && gui.scroll_fg_pixel != i)
	{
	    gui.scroll_fg_pixel = i;
	    *do_colors = TRUE;
	}
#   ifdef FEAT_BEVAL_GUI
	if (is_tooltip_group && gui.tooltip_fg_pixel != i)
	{
	    gui.tooltip_fg_pixel = i;
	    *do_colors = TRUE;
	}
#   endif
#  endif
    }
# endif

    return did_change;
}

/*
 * Set the GUI background color for the highlight group at 'idx'.
 * Returns TRUE if the color is set.
 */
    static int
highlight_set_guibg(
	int	idx,
	char_u	*arg,
	int	is_menu_group UNUSED,
	int	is_scrollbar_group UNUSED,
	int	is_tooltip_group UNUSED,
	int	*do_colors UNUSED,
	int	init)
{
# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    int		i;
# endif
    char_u	**namep;
    int		did_change = FALSE;

    if (init && (HL_TABLE()[idx].sg_set & SG_GUI))
	return FALSE;

    namep = &HL_TABLE()[idx].sg_gui_bg_name;
    if (!init)
	HL_TABLE()[idx].sg_set |= SG_GUI;

# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    // In GUI guibg colors are only used when recognized
    i = color_name2handle(arg);
    if (i != INVALCOLOR || STRCMP(arg, "NONE") == 0 || !USE_24BIT)
    {
	HL_TABLE()[idx].sg_gui_bg = i;
# endif
	if (*namep == NULL || STRCMP(*namep, arg) != 0)
	{
	    vim_free(*namep);
	    if (STRCMP(arg, "NONE") != 0)
		*namep = vim_strsave(arg);
	    else
		*namep = NULL;
	    did_change = TRUE;
	}
# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
#  ifdef FEAT_GUI_X11
	if (is_menu_group && gui.menu_bg_pixel != i)
	{
	    gui.menu_bg_pixel = i;
	    *do_colors = TRUE;
	}
	if (is_scrollbar_group && gui.scroll_bg_pixel != i)
	{
	    gui.scroll_bg_pixel = i;
	    *do_colors = TRUE;
	}
#   ifdef FEAT_BEVAL_GUI
	if (is_tooltip_group && gui.tooltip_bg_pixel != i)
	{
	    gui.tooltip_bg_pixel = i;
	    *do_colors = TRUE;
	}
#   endif
#  endif
    }
# endif

    return did_change;
}

/*
 * Set the GUI undercurl/strikethrough color for the highlight group at 'idx'.
 * Returns TRUE if the color is set.
 */
    static int
highlight_set_guisp(int idx, char_u *arg, int init)
{
# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    int		i;
# endif
    int		did_change = FALSE;
    char_u	**namep;

    if (init && (HL_TABLE()[idx].sg_set & SG_GUI))
	return FALSE;

    namep = &HL_TABLE()[idx].sg_gui_sp_name;
    if (!init)
	HL_TABLE()[idx].sg_set |= SG_GUI;

# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    // In GUI guisp colors are only used when recognized
    i = color_name2handle(arg);
    if (i != INVALCOLOR || STRCMP(arg, "NONE") == 0 || !USE_24BIT)
    {
	HL_TABLE()[idx].sg_gui_sp = i;
# endif
	if (*namep == NULL || STRCMP(*namep, arg) != 0)
	{
	    vim_free(*namep);
	    if (STRCMP(arg, "NONE") != 0)
		*namep = vim_strsave(arg);
	    else
		*namep = NULL;
	    did_change = TRUE;
	}
# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    }
# endif

    return did_change;
}
#endif

/*
 * Set the start/stop terminal codes for a highlight group.
 * Returns TRUE if the terminal code is set.
 */
    static int
highlight_set_startstop_termcode(int idx, char_u *key, char_u *arg, int init)
{
    int		off;
    char_u	buf[100];
    int		len;
    char_u	*tname;
    char_u	*p;

    if (!init)
	HL_TABLE()[idx].sg_set |= SG_TERM;

    // The "start" and "stop"  arguments can be a literal escape
    // sequence, or a comma separated list of terminal codes.
    if (STRNCMP(arg, "t_", 2) == 0)
    {
	off = 0;
	buf[0] = 0;
	while (arg[off] != NUL)
	{
	    // Isolate one termcap name
	    for (len = 0; arg[off + len] &&
		    arg[off + len] != ','; ++len)
		;
	    tname = vim_strnsave(arg + off, len);
	    if (tname == NULL)		// out of memory
		return FALSE;
	    // lookup the escape sequence for the item
	    p = get_term_code(tname);
	    vim_free(tname);
	    if (p == NULL)	    // ignore non-existing things
		p = (char_u *)"";

	    // Append it to the already found stuff
	    if ((int)(STRLEN(buf) + STRLEN(p)) >= 99)
	    {
		semsg(_(e_terminal_code_too_long_str), arg);
		return FALSE;
	    }
	    STRCAT(buf, p);

	    // Advance to the next item
	    off += len;
	    if (arg[off] == ',')	    // another one follows
		++off;
	}
    }
    else
    {
	// Copy characters from arg[] to buf[], translating <> codes.
	for (p = arg, off = 0; off < 100 - 6 && *p; )
	{
	    len = trans_special(&p, buf + off, FSK_SIMPLIFY, FALSE, NULL);
	    if (len > 0)	    // recognized special char
		off += len;
	    else		    // copy as normal char
		buf[off++] = *p++;
	}
	buf[off] = NUL;
    }

    if (STRCMP(buf, "NONE") == 0)	// resetting the value
	p = NULL;
    else
	p = vim_strsave(buf);
    if (key[2] == 'A')
    {
	vim_free(HL_TABLE()[idx].sg_start);
	HL_TABLE()[idx].sg_start = p;
    }
    else
    {
	vim_free(HL_TABLE()[idx].sg_stop);
	HL_TABLE()[idx].sg_stop = p;
    }
    return TRUE;
}

/*
 * Handle the ":highlight .." command.
 * When using ":hi clear" this is called recursively for each group with
 * "forceit" and "init" both TRUE.
 */
    void
do_highlight(
    char_u	*line,
    int		forceit,
    int		init)	    // TRUE when called for initializing
{
    char_u	*name_end;
    char_u	*linep;
    char_u	*key_start;
    char_u	*arg_start;
    char_u	*key = NULL, *arg = NULL;
    long	i;
    int		id;
    int		idx;
    hl_group_T	item_before;
    int		did_change = FALSE;
    int		dodefault = FALSE;
    int		doclear = FALSE;
    int		dolink = FALSE;
    int		error = FALSE;
    int		is_normal_group = FALSE;	// "Normal" group
#ifdef FEAT_GUI_X11
    int		is_menu_group = FALSE;		// "Menu" group
    int		is_scrollbar_group = FALSE;	// "Scrollbar" group
    int		is_tooltip_group = FALSE;	// "Tooltip" group
#else
# define is_menu_group 0
# define is_tooltip_group 0
# define is_scrollbar_group 0
#endif
#if defined(FEAT_GUI) || defined(FEAT_EVAL)
    int		do_colors = FALSE;		// need to update colors?
#endif
#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    int		did_highlight_changed = FALSE;
#endif

    // If no argument, list current highlighting.
    if (!init && ends_excmd2(line - 1, line))
    {
	for (i = 1; i <= highlight_ga.ga_len && !got_int; ++i)
	    // TODO: only call when the group has attributes set
	    highlight_list_one((int)i);
	return;
    }

    // Isolate the name.
    name_end = skiptowhite(line);
    linep = skipwhite(name_end);

    // Check for "default" argument.
    if (STRNCMP(line, "default", name_end - line) == 0)
    {
	dodefault = TRUE;
	line = linep;
	name_end = skiptowhite(line);
	linep = skipwhite(name_end);
    }

    // Check for "clear" or "link" argument.
    if (STRNCMP(line, "clear", name_end - line) == 0)
	doclear = TRUE;
    if (STRNCMP(line, "link", name_end - line) == 0)
	dolink = TRUE;

    // ":highlight {group-name}": list highlighting for one group.
    if (!doclear && !dolink && ends_excmd2(line, linep))
    {
	id = syn_namen2id(line, (int)(name_end - line));
	if (id == 0)
	    semsg(_(e_highlight_group_name_not_found_str), line);
	else
	    highlight_list_one(id);
	return;
    }

    // Handle ":highlight link {from} {to}" command.
    if (dolink)
    {
	char_u	    *from_start = linep;
	char_u	    *from_end;
	int	    from_len;
	char_u	    *to_start;
	char_u	    *to_end;
	int	    to_len;

	from_end = skiptowhite(from_start);
	to_start = skipwhite(from_end);
	to_end	 = skiptowhite(to_start);

	if (ends_excmd2(line, from_start) || ends_excmd2(line, to_start))
	{
	    semsg(_(e_not_enough_arguments_highlight_link_str), from_start);
	    return;
	}

	if (!ends_excmd2(line, skipwhite(to_end)))
	{
	    semsg(_(e_too_many_arguments_highlight_link_str), from_start);
	    return;
	}

	from_len = (int)(from_end - from_start);
	to_len = (int)(to_end - to_start);
	highlight_group_link(from_start, from_len, to_start, to_len,
						dodefault, forceit, init);
	return;
    }

    if (doclear)
    {
	// ":highlight clear [group]" command.
	if (ends_excmd2(line, linep))
	{
	    // ":highlight clear" without group name
	    highlight_reset_all();
	    return;
	}
	line = linep;
	name_end = skiptowhite(line);
	linep = skipwhite(name_end);
    }

    // Find the group name in the table.  If it does not exist yet, add it.
    id = syn_check_group(line, (int)(name_end - line));
    if (id == 0)	// failed (out of memory)
	return;
    idx = id - 1;	// index is ID minus one

    // Return if "default" was used and the group already has settings.
    if (dodefault && hl_has_settings(idx, TRUE))
	return;

    // Make a copy so we can check if any attribute actually changed.
    item_before = HL_TABLE()[idx];

    if (STRCMP(HL_TABLE()[idx].sg_name_u, "NORMAL") == 0)
	is_normal_group = TRUE;
#ifdef FEAT_GUI_X11
    else if (STRCMP(HL_TABLE()[idx].sg_name_u, "MENU") == 0)
	is_menu_group = TRUE;
    else if (STRCMP(HL_TABLE()[idx].sg_name_u, "SCROLLBAR") == 0)
	is_scrollbar_group = TRUE;
    else if (STRCMP(HL_TABLE()[idx].sg_name_u, "TOOLTIP") == 0)
	is_tooltip_group = TRUE;
#endif

    // Clear the highlighting for ":hi clear {group}" and ":hi clear".
    if (doclear || (forceit && init))
    {
	highlight_clear(idx);
	if (!doclear)
	    HL_TABLE()[idx].sg_set = 0;
    }

    if (!doclear)
	while (!ends_excmd2(line, linep))
	{
	    key_start = linep;
	    if (*linep == '=')
	    {
		semsg(_(e_unexpected_equal_sign_str), key_start);
		error = TRUE;
		break;
	    }

	    // Isolate the key ("term", "ctermfg", "ctermbg", "font", "guifg"
	    // or "guibg").
	    while (*linep && !VIM_ISWHITE(*linep) && *linep != '=')
		++linep;
	    vim_free(key);
	    key = vim_strnsave_up(key_start, linep - key_start);
	    if (key == NULL)
	    {
		error = TRUE;
		break;
	    }
	    linep = skipwhite(linep);

	    if (STRCMP(key, "NONE") == 0)
	    {
		if (!init || HL_TABLE()[idx].sg_set == 0)
		{
		    if (!init)
			HL_TABLE()[idx].sg_set |= SG_TERM+SG_CTERM+SG_GUI;
		    highlight_clear(idx);
		}
		continue;
	    }

	    // Check for the equal sign.
	    if (*linep != '=')
	    {
		semsg(_(e_missing_equal_sign_str_2), key_start);
		error = TRUE;
		break;
	    }
	    ++linep;

	    // Isolate the argument.
	    linep = skipwhite(linep);
	    if (*linep == '\'')		// guifg='color name'
	    {
		arg_start = ++linep;
		linep = vim_strchr(linep, '\'');
		if (linep == NULL)
		{
		    semsg(_(e_invalid_argument_str), key_start);
		    error = TRUE;
		    break;
		}
	    }
	    else
	    {
		arg_start = linep;
		linep = skiptowhite(linep);
	    }
	    if (linep == arg_start)
	    {
		semsg(_(e_missing_argument_str), key_start);
		error = TRUE;
		break;
	    }
	    vim_free(arg);
	    arg = vim_strnsave(arg_start, linep - arg_start);
	    if (arg == NULL)
	    {
		error = TRUE;
		break;
	    }
	    if (*linep == '\'')
		++linep;

	    // Store the argument.
	    if (STRCMP(key, "TERM") == 0
		    || STRCMP(key, "CTERM") == 0
		    || STRCMP(key, "GUI") == 0)
	    {
		if (!highlight_set_termgui_attr(idx, key, arg, init))
		{
		    error = TRUE;
		    break;
		}
	    }
	    else if (STRCMP(key, "FONT") == 0)
	    {
		// in non-GUI fonts are simply ignored
#ifdef FEAT_GUI
		if (highlight_set_font(idx, arg, is_normal_group,
					      is_menu_group, is_tooltip_group))
		    did_change = TRUE;
#endif
	    }
	    else if (STRCMP(key, "CTERMFG") == 0
		    || STRCMP(key, "CTERMBG") == 0
		    || STRCMP(key, "CTERMUL") == 0)
	    {
		if (!highlight_set_cterm_color(idx, key, key_start, arg,
							is_normal_group, init))
		{
		    error = TRUE;
		    break;
		}
	    }
	    else if (STRCMP(key, "CTERMFONT") == 0)
	    {
		if (!highlight_set_cterm_font(idx, arg, init))
		{
		    error = TRUE;
		    break;
		}
	    }
	    else if (STRCMP(key, "GUIFG") == 0)
	    {
#if defined(FEAT_GUI) || defined(FEAT_EVAL)
		if (highlight_set_guifg(idx, arg, is_menu_group,
					  is_scrollbar_group, is_tooltip_group,
							     &do_colors, init))
		    did_change = TRUE;
#endif
	    }
	    else if (STRCMP(key, "GUIBG") == 0)
	    {
#if defined(FEAT_GUI) || defined(FEAT_EVAL)
		if (highlight_set_guibg(idx, arg, is_menu_group,
			    is_scrollbar_group, is_tooltip_group,
			    &do_colors, init))
		    did_change = TRUE;
#endif
	    }
	    else if (STRCMP(key, "GUISP") == 0)
	    {
#if defined(FEAT_GUI) || defined(FEAT_EVAL)
		if (highlight_set_guisp(idx, arg, init))
		    did_change = TRUE;
#endif
	    }
	    else if (STRCMP(key, "START") == 0 || STRCMP(key, "STOP") == 0)
	    {
		if (!highlight_set_startstop_termcode(idx, key, arg, init))
		{
		    error = TRUE;
		    break;
		}
	    }
	    else
	    {
		semsg(_(e_illegal_argument_str_3), key_start);
		error = TRUE;
		break;
	    }
	    HL_TABLE()[idx].sg_cleared = FALSE;

	    // When highlighting has been given for a group, don't link it.
	    if (!init || !(HL_TABLE()[idx].sg_set & SG_LINK))
		HL_TABLE()[idx].sg_link = 0;

	    // Continue with next argument.
	    linep = skipwhite(linep);
	}

    // If there is an error, and it's a new entry, remove it from the table.
    if (error && idx == highlight_ga.ga_len)
	syn_unadd_group();
    else
    {
	if (is_normal_group)
	{
	    HL_TABLE()[idx].sg_term_attr = 0;
	    HL_TABLE()[idx].sg_cterm_attr = 0;
#ifdef FEAT_GUI
	    HL_TABLE()[idx].sg_gui_attr = 0;
	    // Need to update all groups, because they might be using "bg"
	    // and/or "fg", which have been changed now.
#endif
#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
	    if (USE_24BIT)
	    {
		highlight_gui_started();
		did_highlight_changed = TRUE;
		redraw_all_later(UPD_NOT_VALID);
	    }
#endif
#ifdef FEAT_VTP
	    control_console_color_rgb();
#endif
	}
#ifdef FEAT_GUI_X11
# ifdef FEAT_MENU
	else if (is_menu_group)
	{
	    if (gui.in_use && do_colors)
		gui_mch_new_menu_colors();
	}
# endif
	else if (is_scrollbar_group)
	{
	    if (gui.in_use && do_colors)
		gui_new_scrollbar_colors();
	    else
		set_hl_attr(idx);
	}
# ifdef FEAT_BEVAL_GUI
	else if (is_tooltip_group)
	{
	    if (gui.in_use && do_colors)
		gui_mch_new_tooltip_colors();
	}
# endif
#endif
	else
	    set_hl_attr(idx);
#ifdef FEAT_EVAL
	HL_TABLE()[idx].sg_script_ctx = current_sctx;
	HL_TABLE()[idx].sg_script_ctx.sc_lnum += SOURCING_LNUM;
#endif
    }

    vim_free(key);
    vim_free(arg);

    // Only call highlight_changed() once, after a sequence of highlight
    // commands, and only if an attribute actually changed.
    if ((did_change
	   || memcmp(&HL_TABLE()[idx], &item_before, sizeof(item_before)) != 0)
#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
	    && !did_highlight_changed
#endif
       )
    {
	// Do not trigger a redraw when highlighting is changed while
	// redrawing.  This may happen when evaluating 'statusline' changes the
	// StatusLine group.
	if (!updating_screen)
	    redraw_all_later(UPD_NOT_VALID);
	need_highlight_changed = TRUE;
    }
}

#if defined(EXITFREE) || defined(PROTO)
    void
free_highlight(void)
{
    int	    i;

    for (i = 0; i < highlight_ga.ga_len; ++i)
    {
	highlight_clear(i);
	vim_free(HL_TABLE()[i].sg_name);
	vim_free(HL_TABLE()[i].sg_name_u);
    }
    ga_clear(&highlight_ga);
}
#endif

/*
 * Reset the cterm colors to what they were before Vim was started, if
 * possible.  Otherwise reset them to zero.
 */
    void
restore_cterm_colors(void)
{
#if defined(MSWIN) && !defined(FEAT_GUI_MSWIN)
    // Since t_me has been set, this probably means that the user
    // wants to use this as default colors.  Need to reset default
    // background/foreground colors.
    mch_set_normal_colors();
#else
# ifdef VIMDLL
    if (!gui.in_use)
    {
	mch_set_normal_colors();
	return;
    }
# endif
    cterm_normal_fg_color = 0;
    cterm_normal_fg_bold = 0;
    cterm_normal_bg_color = 0;
# ifdef FEAT_TERMGUICOLORS
    cterm_normal_fg_gui_color = INVALCOLOR;
    cterm_normal_bg_gui_color = INVALCOLOR;
    cterm_normal_ul_gui_color = INVALCOLOR;
# endif
#endif
}

/*
 * Return TRUE if highlight group "idx" has any settings.
 * When "check_link" is TRUE also check for an existing link.
 */
    static int
hl_has_settings(int idx, int check_link)
{
    return HL_TABLE()[idx].sg_cleared == 0
	 && (  HL_TABLE()[idx].sg_term_attr != 0
	    || HL_TABLE()[idx].sg_cterm_attr != 0
	    || HL_TABLE()[idx].sg_cterm_fg != 0
	    || HL_TABLE()[idx].sg_cterm_bg != 0
	    || HL_TABLE()[idx].sg_cterm_font != 0
#ifdef FEAT_GUI
	    || HL_TABLE()[idx].sg_gui_attr != 0
	    || HL_TABLE()[idx].sg_gui_fg_name != NULL
	    || HL_TABLE()[idx].sg_gui_bg_name != NULL
	    || HL_TABLE()[idx].sg_gui_sp_name != NULL
	    || HL_TABLE()[idx].sg_font_name != NULL
#endif
	    || (check_link && (HL_TABLE()[idx].sg_set & SG_LINK)));
}

/*
 * Clear highlighting for one group.
 */
    static void
highlight_clear(int idx)
{
    HL_TABLE()[idx].sg_cleared = TRUE;

    HL_TABLE()[idx].sg_term = 0;
    VIM_CLEAR(HL_TABLE()[idx].sg_start);
    VIM_CLEAR(HL_TABLE()[idx].sg_stop);
    HL_TABLE()[idx].sg_term_attr = 0;
    HL_TABLE()[idx].sg_cterm = 0;
    HL_TABLE()[idx].sg_cterm_bold = FALSE;
    HL_TABLE()[idx].sg_cterm_fg = 0;
    HL_TABLE()[idx].sg_cterm_bg = 0;
    HL_TABLE()[idx].sg_cterm_attr = 0;
    HL_TABLE()[idx].sg_cterm_font = 0;
#if defined(FEAT_GUI) || defined(FEAT_EVAL)
    HL_TABLE()[idx].sg_gui = 0;
    VIM_CLEAR(HL_TABLE()[idx].sg_gui_fg_name);
    VIM_CLEAR(HL_TABLE()[idx].sg_gui_bg_name);
    VIM_CLEAR(HL_TABLE()[idx].sg_gui_sp_name);
#endif
#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    HL_TABLE()[idx].sg_gui_fg = INVALCOLOR;
    HL_TABLE()[idx].sg_gui_bg = INVALCOLOR;
    HL_TABLE()[idx].sg_gui_sp = INVALCOLOR;
#endif
#ifdef FEAT_GUI
    gui_mch_free_font(HL_TABLE()[idx].sg_font);
    HL_TABLE()[idx].sg_font = NOFONT;
# ifdef FEAT_XFONTSET
    gui_mch_free_fontset(HL_TABLE()[idx].sg_fontset);
    HL_TABLE()[idx].sg_fontset = NOFONTSET;
# endif
    VIM_CLEAR(HL_TABLE()[idx].sg_font_name);
    HL_TABLE()[idx].sg_gui_attr = 0;
#endif
    // Restore default link and context if they exist. Otherwise clears.
    HL_TABLE()[idx].sg_link = HL_TABLE()[idx].sg_deflink;
#ifdef FEAT_EVAL
    // Since we set the default link, set the location to where the default
    // link was set.
    HL_TABLE()[idx].sg_script_ctx = HL_TABLE()[idx].sg_deflink_sctx;
#endif
}

#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS) || defined(PROTO)
/*
 * Set the normal foreground and background colors according to the "Normal"
 * highlighting group.  For X11 also set "Menu", "Scrollbar", and
 * "Tooltip" colors.
 */
    void
set_normal_colors(void)
{
# ifdef FEAT_GUI
#  ifdef FEAT_TERMGUICOLORS
    if (gui.in_use)
#  endif
    {
	if (set_group_colors((char_u *)"Normal",
				 &gui.norm_pixel, &gui.back_pixel,
				 FALSE, TRUE, FALSE))
	{
	    gui_mch_new_colors();
	    set_must_redraw(UPD_CLEAR);
	}
#  ifdef FEAT_GUI_X11
	if (set_group_colors((char_u *)"Menu",
			     &gui.menu_fg_pixel, &gui.menu_bg_pixel,
			     TRUE, FALSE, FALSE))
	{
#   ifdef FEAT_MENU
	    gui_mch_new_menu_colors();
#   endif
	    set_must_redraw(UPD_CLEAR);
	}
#   ifdef FEAT_BEVAL_GUI
	if (set_group_colors((char_u *)"Tooltip",
			     &gui.tooltip_fg_pixel, &gui.tooltip_bg_pixel,
			     FALSE, FALSE, TRUE))
	{
#    ifdef FEAT_TOOLBAR
	    gui_mch_new_tooltip_colors();
#    endif
	    set_must_redraw(UPD_CLEAR);
	}
#   endif
	if (set_group_colors((char_u *)"Scrollbar",
			&gui.scroll_fg_pixel, &gui.scroll_bg_pixel,
			FALSE, FALSE, FALSE))
	{
	    gui_new_scrollbar_colors();
	    set_must_redraw(UPD_CLEAR);
	}
#  endif
    }
# endif
# ifdef FEAT_TERMGUICOLORS
#  ifdef FEAT_GUI
    else
#  endif
    {
	int		idx;

	idx = syn_name2id((char_u *)"Normal") - 1;
	if (idx >= 0)
	{
	    gui_do_one_color(idx, FALSE, FALSE);

	    // If the normal fg or bg color changed a complete redraw is
	    // required.
	    if (cterm_normal_fg_gui_color != HL_TABLE()[idx].sg_gui_fg
		    || cterm_normal_bg_gui_color != HL_TABLE()[idx].sg_gui_bg)
	    {
		// if the GUI color is INVALCOLOR then we use the default cterm
		// color
		cterm_normal_fg_gui_color = HL_TABLE()[idx].sg_gui_fg;
		cterm_normal_bg_gui_color = HL_TABLE()[idx].sg_gui_bg;
		set_must_redraw(UPD_CLEAR);
	    }
	}
    }
# endif
}
#endif

#if defined(FEAT_GUI) || defined(PROTO)
/*
 * Set the colors for "Normal", "Menu", "Tooltip" or "Scrollbar".
 */
    static int
set_group_colors(
    char_u	*name,
    guicolor_T	*fgp,
    guicolor_T	*bgp,
    int		do_menu,
    int		use_norm,
    int		do_tooltip)
{
    int		idx;

    idx = syn_name2id(name) - 1;
    if (idx < 0)
	return FALSE;

    gui_do_one_color(idx, do_menu, do_tooltip);

    if (HL_TABLE()[idx].sg_gui_fg != INVALCOLOR)
	*fgp = HL_TABLE()[idx].sg_gui_fg;
    else if (use_norm)
	*fgp = gui.def_norm_pixel;
    if (HL_TABLE()[idx].sg_gui_bg != INVALCOLOR)
	*bgp = HL_TABLE()[idx].sg_gui_bg;
    else if (use_norm)
	*bgp = gui.def_back_pixel;
    return TRUE;
}

/*
 * Get the font of the "Normal" group.
 * Returns "" when it's not found or not set.
 */
    char_u *
hl_get_font_name(void)
{
    int		id;
    char_u	*s;

    id = syn_name2id((char_u *)"Normal");
    if (id > 0)
    {
	s = HL_TABLE()[id - 1].sg_font_name;
	if (s != NULL)
	    return s;
    }
    return (char_u *)"";
}

/*
 * Set font for "Normal" group.  Called by gui_mch_init_font() when a font has
 * actually chosen to be used.
 */
    void
hl_set_font_name(char_u *font_name)
{
    int	    id;

    id = syn_name2id((char_u *)"Normal");
    if (id <= 0)
	return;

    vim_free(HL_TABLE()[id - 1].sg_font_name);
    HL_TABLE()[id - 1].sg_font_name = vim_strsave(font_name);
}

/*
 * Set background color for "Normal" group.  Called by gui_set_bg_color()
 * when the color is known.
 */
    void
hl_set_bg_color_name(
    char_u  *name)	    // must have been allocated
{
    int	    id;

    if (name == NULL)
	return;

    id = syn_name2id((char_u *)"Normal");
    if (id <= 0)
	return;

    vim_free(HL_TABLE()[id - 1].sg_gui_bg_name);
    HL_TABLE()[id - 1].sg_gui_bg_name = name;
}

/*
 * Set foreground color for "Normal" group.  Called by gui_set_fg_color()
 * when the color is known.
 */
    void
hl_set_fg_color_name(
    char_u  *name)	    // must have been allocated
{
    int	    id;

    if (name == NULL)
	return;

    id = syn_name2id((char_u *)"Normal");
    if (id <= 0)
	return;

    vim_free(HL_TABLE()[id - 1].sg_gui_fg_name);
    HL_TABLE()[id - 1].sg_gui_fg_name = name;
}

/*
 * Return the handle for a font name.
 * Returns NOFONT when failed.
 */
    static GuiFont
font_name2handle(char_u *name)
{
    if (STRCMP(name, "NONE") == 0)
	return NOFONT;

    return gui_mch_get_font(name, TRUE);
}

# ifdef FEAT_XFONTSET
/*
 * Return the handle for a fontset name.
 * Returns NOFONTSET when failed.
 */
    static GuiFontset
fontset_name2handle(char_u *name, int fixed_width)
{
    if (STRCMP(name, "NONE") == 0)
	return NOFONTSET;

    return gui_mch_get_fontset(name, TRUE, fixed_width);
}
# endif

/*
 * Get the font or fontset for one highlight group.
 */
    static void
hl_do_font(
    int		idx,
    char_u	*arg,
    int		do_normal,		// set normal font
    int		do_menu UNUSED,		// set menu font
    int		do_tooltip UNUSED,	// set tooltip font
    int		free_font)		// free current font/fontset
{
# ifdef FEAT_XFONTSET
    // If 'guifontset' is not empty, first try using the name as a
    // fontset.  If that doesn't work, use it as a font name.
    if (*p_guifontset != NUL
#  ifdef FONTSET_ALWAYS
	|| do_menu
#  endif
#  ifdef FEAT_BEVAL_TIP
	// In Motif, the Tooltip highlight group is always a fontset
	|| do_tooltip
#  endif
	    )
    {
	if (free_font)
	    gui_mch_free_fontset(HL_TABLE()[idx].sg_fontset);
	HL_TABLE()[idx].sg_fontset = fontset_name2handle(arg, 0
#  ifdef FONTSET_ALWAYS
		|| do_menu
#  endif
#  ifdef FEAT_BEVAL_TIP
		|| do_tooltip
#  endif
		);
    }
    if (HL_TABLE()[idx].sg_fontset != NOFONTSET)
    {
	// If it worked and it's the Normal group, use it as the normal
	// fontset.  Same for the Menu group.
	if (do_normal)
	    gui_init_font(arg, TRUE);
#   if defined(FEAT_GUI_MOTIF) && defined(FEAT_MENU)
	if (do_menu)
	{
#    ifdef FONTSET_ALWAYS
	    gui.menu_fontset = HL_TABLE()[idx].sg_fontset;
#    else
	    // YIKES!  This is a bug waiting to crash the program
	    gui.menu_font = HL_TABLE()[idx].sg_fontset;
#    endif
	    gui_mch_new_menu_font();
	}
#    ifdef FEAT_BEVAL_GUI
	if (do_tooltip)
	{
	    // The Athena widget set could not handle switching between
	    // displaying a single font and a fontset.
	    // If the XtNinternational resource is set to True at widget
	    // creation, then a fontset is always used, otherwise an
	    // XFontStruct is used.
	    gui.tooltip_fontset = (XFontSet)HL_TABLE()[idx].sg_fontset;
	    gui_mch_new_tooltip_font();
	}
#    endif
#   endif
    }
    else
# endif
    {
	if (free_font)
	    gui_mch_free_font(HL_TABLE()[idx].sg_font);
	HL_TABLE()[idx].sg_font = font_name2handle(arg);
	// If it worked and it's the Normal group, use it as the
	// normal font.  Same for the Menu group.
	if (HL_TABLE()[idx].sg_font != NOFONT)
	{
	    if (do_normal)
		gui_init_font(arg, FALSE);
#ifndef FONTSET_ALWAYS
# if defined(FEAT_GUI_MOTIF) && defined(FEAT_MENU)
	    if (do_menu)
	    {
		gui.menu_font = HL_TABLE()[idx].sg_font;
		gui_mch_new_menu_font();
	    }
# endif
#endif
	}
    }
}

#endif // FEAT_GUI

#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS) || defined(PROTO)
/*
 * Return the handle for a color name.
 * Returns INVALCOLOR when failed.
 */
    guicolor_T
color_name2handle(char_u *name)
{
    if (STRCMP(name, "NONE") == 0)
	return INVALCOLOR;

    if (STRICMP(name, "fg") == 0 || STRICMP(name, "foreground") == 0)
    {
#if defined(FEAT_TERMGUICOLORS) && defined(FEAT_GUI)
	if (gui.in_use)
#endif
#ifdef FEAT_GUI
	    return gui.norm_pixel;
#endif
#ifdef FEAT_TERMGUICOLORS
	if (cterm_normal_fg_gui_color != INVALCOLOR)
	    return cterm_normal_fg_gui_color;
	// Guess that the foreground is black or white.
	return GUI_GET_COLOR((char_u *)(*p_bg == 'l' ? "black" : "white"));
#endif
    }
    if (STRICMP(name, "bg") == 0 || STRICMP(name, "background") == 0)
    {
#if defined(FEAT_TERMGUICOLORS) && defined(FEAT_GUI)
	if (gui.in_use)
#endif
#ifdef FEAT_GUI
	    return gui.back_pixel;
#endif
#ifdef FEAT_TERMGUICOLORS
	if (cterm_normal_bg_gui_color != INVALCOLOR)
	    return cterm_normal_bg_gui_color;
	// Guess that the background is white or black.
	return GUI_GET_COLOR((char_u *)(*p_bg == 'l' ? "white" : "black"));
#endif
    }

    return GUI_GET_COLOR(name);
}

// On MS-Windows an RGB macro is available and it produces 0x00bbggrr color
// values as used by the MS-Windows GDI api.  It should be used only for
// MS-Windows GDI builds.
# if defined(RGB) && defined(MSWIN) && !defined(FEAT_GUI)
#  undef RGB
# endif
# ifndef RGB
#  define RGB(r, g, b)	(((r)<<16) | ((g)<<8) | (b))
# endif

# ifdef VIMDLL
    static guicolor_T
gui_adjust_rgb(guicolor_T c)
{
    if (gui.in_use)
	return c;
    else
	return ((c & 0xff) << 16) | (c & 0x00ff00) | ((c >> 16) & 0xff);
}
# else
#  define gui_adjust_rgb(c) (c)
# endif

    static int
hex_digit(int c)
{
    if (SAFE_isdigit(c))
	return c - '0';
    c = TOLOWER_ASC(c);
    if (c >= 'a' && c <= 'f')
	return c - 'a' + 10;
    return 0x1ffffff;
}

    static guicolor_T
decode_hex_color(char_u *hex)
{
    guicolor_T color;

    if (hex[0] != '#' || STRLEN(hex) != 7)
	return INVALCOLOR;

    // Name is in "#rrggbb" format
    color = RGB(((hex_digit(hex[1]) << 4) + hex_digit(hex[2])),
		((hex_digit(hex[3]) << 4) + hex_digit(hex[4])),
		((hex_digit(hex[5]) << 4) + hex_digit(hex[6])));
    if (color > 0xffffff)
	return INVALCOLOR;
    return gui_adjust_rgb(color);
}

#ifdef FEAT_EVAL
// Returns the color currently mapped to the given name or INVALCOLOR if no
// such name exists in the color table. The convention is to use lowercase for
// all keys in the v:colornames dictionary. The value can be either a string in
// the form #rrggbb or a number, either of which is converted to a guicolor_T.
    static guicolor_T
colorname2rgb(char_u *name)
{
    dict_T      *colornames_table = get_vim_var_dict(VV_COLORNAMES);
    char_u      *lc_name;
    dictitem_T  *colentry;
    char_u      *colstr;
    varnumber_T colnum;

    lc_name = strlow_save(name);
    if (lc_name == NULL)
	return INVALCOLOR;

    colentry = dict_find(colornames_table, lc_name, -1);
    vim_free(lc_name);
    if (colentry == NULL)
	return INVALCOLOR;

    if (colentry->di_tv.v_type == VAR_STRING)
    {
	colstr = tv_get_string_strict(&colentry->di_tv);
	if ((STRLEN(colstr) == 7) && (*colstr == '#'))
	{
	    return decode_hex_color(colstr);
	}
	else
	{
	    semsg(_(e_bad_color_string_str), colstr);
	    return INVALCOLOR;
	}
    }

    if (colentry->di_tv.v_type == VAR_NUMBER)
    {
	colnum = tv_get_number(&colentry->di_tv);
	return (guicolor_T)colnum;
    }

    return INVALCOLOR;
}

#endif

    guicolor_T
gui_get_color_cmn(char_u *name)
{
    int		i;
    guicolor_T  color;

    struct rgbcolor_table_S {
	char_u	    *color_name;
	guicolor_T  color;
    };

    // Only non X11 colors (not present in rgb.txt) and colors in
    // color_names[], useful when $VIMRUNTIME is not found,.
    static struct rgbcolor_table_S rgb_table[] = {
	    {(char_u *)"black",		RGB(0x00, 0x00, 0x00)},
	    {(char_u *)"blue",		RGB(0x00, 0x00, 0xFF)},
	    {(char_u *)"brown",		RGB(0xA5, 0x2A, 0x2A)},
	    {(char_u *)"cyan",		RGB(0x00, 0xFF, 0xFF)},
	    {(char_u *)"darkblue",	RGB(0x00, 0x00, 0x8B)},
	    {(char_u *)"darkcyan",	RGB(0x00, 0x8B, 0x8B)},
	    {(char_u *)"darkgray",	RGB(0xA9, 0xA9, 0xA9)},
	    {(char_u *)"darkgreen",	RGB(0x00, 0x64, 0x00)},
	    {(char_u *)"darkgrey",	RGB(0xA9, 0xA9, 0xA9)},
	    {(char_u *)"darkmagenta",	RGB(0x8B, 0x00, 0x8B)},
	    {(char_u *)"darkred",	RGB(0x8B, 0x00, 0x00)},
	    {(char_u *)"darkyellow",	RGB(0x8B, 0x8B, 0x00)}, // No X11
	    {(char_u *)"gray",		RGB(0xBE, 0xBE, 0xBE)},
	    {(char_u *)"green",		RGB(0x00, 0xFF, 0x00)},
	    {(char_u *)"grey",		RGB(0xBE, 0xBE, 0xBE)},
	    {(char_u *)"grey40",	RGB(0x66, 0x66, 0x66)},
	    {(char_u *)"grey50",	RGB(0x7F, 0x7F, 0x7F)},
	    {(char_u *)"grey90",	RGB(0xE5, 0xE5, 0xE5)},
	    {(char_u *)"lightblue",	RGB(0xAD, 0xD8, 0xE6)},
	    {(char_u *)"lightcyan",	RGB(0xE0, 0xFF, 0xFF)},
	    {(char_u *)"lightgray",	RGB(0xD3, 0xD3, 0xD3)},
	    {(char_u *)"lightgreen",	RGB(0x90, 0xEE, 0x90)},
	    {(char_u *)"lightgrey",	RGB(0xD3, 0xD3, 0xD3)},
	    {(char_u *)"lightmagenta",	RGB(0xFF, 0x8B, 0xFF)}, // No X11
	    {(char_u *)"lightred",	RGB(0xFF, 0x8B, 0x8B)}, // No X11
	    {(char_u *)"lightyellow",	RGB(0xFF, 0xFF, 0xE0)},
	    {(char_u *)"magenta",	RGB(0xFF, 0x00, 0xFF)},
	    {(char_u *)"red",		RGB(0xFF, 0x00, 0x00)},
	    {(char_u *)"seagreen",	RGB(0x2E, 0x8B, 0x57)},
	    {(char_u *)"white",		RGB(0xFF, 0xFF, 0xFF)},
	    {(char_u *)"yellow",	RGB(0xFF, 0xFF, 0x00)},
    };

    color = decode_hex_color(name);
    if (color != INVALCOLOR)
	return color;

    // Check if the name is one of the colors we know
    for (i = 0; i < (int)ARRAY_LENGTH(rgb_table); i++)
	if (STRICMP(name, rgb_table[i].color_name) == 0)
	    return gui_adjust_rgb(rgb_table[i].color);

#if defined(FEAT_EVAL)
    /*
     * Not a traditional color. Load additional color aliases and then consult the alias table.
     */

    color = colorname2rgb(name);
    if (color == INVALCOLOR)
    {
	load_default_colors_lists();
	color = colorname2rgb(name);
    }

    return color;
#else
    return INVALCOLOR;
#endif
}

    guicolor_T
gui_get_rgb_color_cmn(int r, int g, int b)
{
    guicolor_T  color = RGB(r, g, b);

    if (color > 0xffffff)
	return INVALCOLOR;
    return gui_adjust_rgb(color);
}
#endif

/*
 * Table with the specifications for an attribute number.
 * Note that this table is used by ALL buffers.  This is required because the
 * GUI can redraw at any time for any buffer.
 */
static garray_T	term_attr_table = {0, 0, 0, 0, NULL};

#define TERM_ATTR_ENTRY(idx) ((attrentry_T *)term_attr_table.ga_data)[idx]

static garray_T	cterm_attr_table = {0, 0, 0, 0, NULL};

#define CTERM_ATTR_ENTRY(idx) ((attrentry_T *)cterm_attr_table.ga_data)[idx]

#ifdef FEAT_GUI
static garray_T	gui_attr_table = {0, 0, 0, 0, NULL};

#define GUI_ATTR_ENTRY(idx) ((attrentry_T *)gui_attr_table.ga_data)[idx]
#endif

/*
 * Return the attr number for a set of colors and font.
 * Add a new entry to the term_attr_table, cterm_attr_table or gui_attr_table
 * if the combination is new.
 * Return 0 for error (no more room).
 */
    static int
get_attr_entry(garray_T *table, attrentry_T *aep)
{
    int		i;
    attrentry_T	*taep;
    static int	recursive = FALSE;

    // Init the table, in case it wasn't done yet.
    table->ga_itemsize = sizeof(attrentry_T);
    table->ga_growsize = 7;

    // Try to find an entry with the same specifications.
    for (i = 0; i < table->ga_len; ++i)
    {
	taep = &(((attrentry_T *)table->ga_data)[i]);
	if (	   aep->ae_attr == taep->ae_attr
		&& (
#ifdef FEAT_GUI
		       (table == &gui_attr_table
			&& (aep->ae_u.gui.fg_color == taep->ae_u.gui.fg_color
			    && aep->ae_u.gui.bg_color
						    == taep->ae_u.gui.bg_color
			    && aep->ae_u.gui.sp_color
						    == taep->ae_u.gui.sp_color
			    && aep->ae_u.gui.font == taep->ae_u.gui.font
#  ifdef FEAT_XFONTSET
			    && aep->ae_u.gui.fontset == taep->ae_u.gui.fontset
#  endif
			    ))
		    ||
#endif
		       (table == &term_attr_table
			&& (aep->ae_u.term.start == NULL)
					    == (taep->ae_u.term.start == NULL)
			&& (aep->ae_u.term.start == NULL
			    || STRCMP(aep->ae_u.term.start,
						  taep->ae_u.term.start) == 0)
			&& (aep->ae_u.term.stop == NULL)
					     == (taep->ae_u.term.stop == NULL)
			&& (aep->ae_u.term.stop == NULL
			    || STRCMP(aep->ae_u.term.stop,
						  taep->ae_u.term.stop) == 0))
		    || (table == &cterm_attr_table
			    && aep->ae_u.cterm.fg_color
						  == taep->ae_u.cterm.fg_color
			    && aep->ae_u.cterm.bg_color
						  == taep->ae_u.cterm.bg_color
			    && aep->ae_u.cterm.ul_color
						  == taep->ae_u.cterm.ul_color
			    && aep->ae_u.cterm.font
						  == taep->ae_u.cterm.font
#ifdef FEAT_TERMGUICOLORS
			    && aep->ae_u.cterm.fg_rgb
						    == taep->ae_u.cterm.fg_rgb
			    && aep->ae_u.cterm.bg_rgb
						    == taep->ae_u.cterm.bg_rgb
			    && aep->ae_u.cterm.ul_rgb
						    == taep->ae_u.cterm.ul_rgb
#endif
		       )))

	return i + ATTR_OFF;
    }

    if (table->ga_len + ATTR_OFF > MAX_TYPENR)
    {
	// Running out of attribute entries!  remove all attributes, and
	// compute new ones for all groups.
	// When called recursively, we are really out of numbers.
	if (recursive)
	{
	    emsg(_(e_too_many_different_highlighting_attributes_in_use));
	    return 0;
	}
	recursive = TRUE;

	clear_hl_tables();

	set_must_redraw(UPD_CLEAR);

	for (i = 0; i < highlight_ga.ga_len; ++i)
	    set_hl_attr(i);

	recursive = FALSE;
    }

    // This is a new combination of colors and font, add an entry.
    if (ga_grow(table, 1) == FAIL)
	return 0;

    taep = &(((attrentry_T *)table->ga_data)[table->ga_len]);
    CLEAR_POINTER(taep);
    taep->ae_attr = aep->ae_attr;
#ifdef FEAT_GUI
    if (table == &gui_attr_table)
    {
	taep->ae_u.gui.fg_color = aep->ae_u.gui.fg_color;
	taep->ae_u.gui.bg_color = aep->ae_u.gui.bg_color;
	taep->ae_u.gui.sp_color = aep->ae_u.gui.sp_color;
	taep->ae_u.gui.font = aep->ae_u.gui.font;
# ifdef FEAT_XFONTSET
	taep->ae_u.gui.fontset = aep->ae_u.gui.fontset;
# endif
    }
#endif
    if (table == &term_attr_table)
    {
	if (aep->ae_u.term.start == NULL)
	    taep->ae_u.term.start = NULL;
	else
	    taep->ae_u.term.start = vim_strsave(aep->ae_u.term.start);
	if (aep->ae_u.term.stop == NULL)
	    taep->ae_u.term.stop = NULL;
	else
	    taep->ae_u.term.stop = vim_strsave(aep->ae_u.term.stop);
    }
    else if (table == &cterm_attr_table)
    {
	taep->ae_u.cterm.fg_color = aep->ae_u.cterm.fg_color;
	taep->ae_u.cterm.bg_color = aep->ae_u.cterm.bg_color;
	taep->ae_u.cterm.ul_color = aep->ae_u.cterm.ul_color;
	taep->ae_u.cterm.font = aep->ae_u.cterm.font;
#ifdef FEAT_TERMGUICOLORS
	taep->ae_u.cterm.fg_rgb = aep->ae_u.cterm.fg_rgb;
	taep->ae_u.cterm.bg_rgb = aep->ae_u.cterm.bg_rgb;
	taep->ae_u.cterm.ul_rgb = aep->ae_u.cterm.ul_rgb;
#endif
    }
    ++table->ga_len;
    return (table->ga_len - 1 + ATTR_OFF);
}

#if defined(FEAT_TERMINAL) || defined(PROTO)
/*
 * Get an attribute index for a cterm entry.
 * Uses an existing entry when possible or adds one when needed.
 */
    int
get_cterm_attr_idx(int attr, int fg, int bg)
{
    attrentry_T		at_en;

    CLEAR_FIELD(at_en);
#ifdef FEAT_TERMGUICOLORS
    at_en.ae_u.cterm.fg_rgb = INVALCOLOR;
    at_en.ae_u.cterm.bg_rgb = INVALCOLOR;
    at_en.ae_u.cterm.ul_rgb = INVALCOLOR;
#endif
    at_en.ae_attr = attr;
    at_en.ae_u.cterm.fg_color = fg;
    at_en.ae_u.cterm.bg_color = bg;
    at_en.ae_u.cterm.ul_color = 0;
    at_en.ae_u.cterm.font = 0;
    return get_attr_entry(&cterm_attr_table, &at_en);
}
#endif

#if (defined(FEAT_TERMINAL) && defined(FEAT_TERMGUICOLORS)) || defined(PROTO)
/*
 * Get an attribute index for a 'termguicolors' entry.
 * Uses an existing entry when possible or adds one when needed.
 */
    int
get_tgc_attr_idx(int attr, guicolor_T fg, guicolor_T bg)
{
    attrentry_T		at_en;

    CLEAR_FIELD(at_en);
    at_en.ae_attr = attr;
    if (fg == INVALCOLOR && bg == INVALCOLOR)
    {
	// If both GUI colors are not set fall back to the cterm colors.  Helps
	// if the GUI only has an attribute, such as undercurl.
	at_en.ae_u.cterm.fg_rgb = CTERMCOLOR;
	at_en.ae_u.cterm.bg_rgb = CTERMCOLOR;
    }
    else
    {
	at_en.ae_u.cterm.fg_rgb = fg;
	at_en.ae_u.cterm.bg_rgb = bg;
    }
    at_en.ae_u.cterm.ul_rgb = INVALCOLOR;
    return get_attr_entry(&cterm_attr_table, &at_en);
}
#endif

#if (defined(FEAT_TERMINAL) && defined(FEAT_GUI)) || defined(PROTO)
/*
 * Get an attribute index for a cterm entry.
 * Uses an existing entry when possible or adds one when needed.
 */
    int
get_gui_attr_idx(int attr, guicolor_T fg, guicolor_T bg)
{
    attrentry_T		at_en;

    CLEAR_FIELD(at_en);
    at_en.ae_attr = attr;
    at_en.ae_u.gui.fg_color = fg;
    at_en.ae_u.gui.bg_color = bg;
    return get_attr_entry(&gui_attr_table, &at_en);
}
#endif

/*
 * Clear all highlight tables.
 */
    void
clear_hl_tables(void)
{
    int		i;
    attrentry_T	*taep;

#ifdef FEAT_GUI
    ga_clear(&gui_attr_table);
#endif
    for (i = 0; i < term_attr_table.ga_len; ++i)
    {
	taep = &(((attrentry_T *)term_attr_table.ga_data)[i]);
	vim_free(taep->ae_u.term.start);
	vim_free(taep->ae_u.term.stop);
    }
    ga_clear(&term_attr_table);
    ga_clear(&cterm_attr_table);
}

/*
 * Combine special attributes (e.g., for spelling) with other attributes
 * (e.g., for syntax highlighting).
 * "prim_attr" overrules "char_attr".
 * This creates a new group when required.
 * Since we expect there to be few spelling mistakes we don't cache the
 * result.
 * Return the resulting attributes.
 */
    int
hl_combine_attr(int char_attr, int prim_attr)
{
    attrentry_T *char_aep = NULL;
    attrentry_T *prim_aep;
    attrentry_T new_en;

    if (char_attr == 0)
	return prim_attr;
    if (char_attr <= HL_ALL && prim_attr <= HL_ALL)
	return ATTR_COMBINE(char_attr, prim_attr);
#ifdef FEAT_GUI
    if (gui.in_use)
    {
	if (char_attr > HL_ALL)
	    char_aep = syn_gui_attr2entry(char_attr);
	if (char_aep != NULL)
	    new_en = *char_aep;
	else
	{
	    CLEAR_FIELD(new_en);
	    new_en.ae_u.gui.fg_color = INVALCOLOR;
	    new_en.ae_u.gui.bg_color = INVALCOLOR;
	    new_en.ae_u.gui.sp_color = INVALCOLOR;
	    if (char_attr <= HL_ALL)
		new_en.ae_attr = char_attr;
	}

	if (prim_attr <= HL_ALL)
	    new_en.ae_attr = ATTR_COMBINE(new_en.ae_attr, prim_attr);
	else
	{
	    prim_aep = syn_gui_attr2entry(prim_attr);
	    if (prim_aep != NULL)
	    {
		new_en.ae_attr = ATTR_COMBINE(new_en.ae_attr,
							   prim_aep->ae_attr);
		if (prim_aep->ae_u.gui.fg_color != INVALCOLOR)
		    new_en.ae_u.gui.fg_color = prim_aep->ae_u.gui.fg_color;
		if (prim_aep->ae_u.gui.bg_color != INVALCOLOR)
		    new_en.ae_u.gui.bg_color = prim_aep->ae_u.gui.bg_color;
		if (prim_aep->ae_u.gui.sp_color != INVALCOLOR)
		    new_en.ae_u.gui.sp_color = prim_aep->ae_u.gui.sp_color;
		if (prim_aep->ae_u.gui.font != NOFONT)
		    new_en.ae_u.gui.font = prim_aep->ae_u.gui.font;
# ifdef FEAT_XFONTSET
		if (prim_aep->ae_u.gui.fontset != NOFONTSET)
		    new_en.ae_u.gui.fontset = prim_aep->ae_u.gui.fontset;
# endif
	    }
	}
	return get_attr_entry(&gui_attr_table, &new_en);
    }
#endif

    if (IS_CTERM)
    {
	if (char_attr > HL_ALL)
	    char_aep = syn_cterm_attr2entry(char_attr);
	if (char_aep != NULL)
	    new_en = *char_aep;
	else
	{
	    CLEAR_FIELD(new_en);
#ifdef FEAT_TERMGUICOLORS
	    new_en.ae_u.cterm.bg_rgb = INVALCOLOR;
	    new_en.ae_u.cterm.fg_rgb = INVALCOLOR;
	    new_en.ae_u.cterm.ul_rgb = INVALCOLOR;
#endif
	    if (char_attr <= HL_ALL)
		new_en.ae_attr = char_attr;
	}

	if (prim_attr <= HL_ALL)
		new_en.ae_attr = ATTR_COMBINE(new_en.ae_attr, prim_attr);
	else
	{
	    prim_aep = syn_cterm_attr2entry(prim_attr);
	    if (prim_aep != NULL)
	    {
		new_en.ae_attr = ATTR_COMBINE(new_en.ae_attr,
							   prim_aep->ae_attr);
		if (prim_aep->ae_u.cterm.fg_color > 0)
		    new_en.ae_u.cterm.fg_color = prim_aep->ae_u.cterm.fg_color;
		if (prim_aep->ae_u.cterm.bg_color > 0)
		    new_en.ae_u.cterm.bg_color = prim_aep->ae_u.cterm.bg_color;
		if (prim_aep->ae_u.cterm.ul_color > 0)
		    new_en.ae_u.cterm.ul_color = prim_aep->ae_u.cterm.ul_color;
		if (prim_aep->ae_u.cterm.font > 0)
		    new_en.ae_u.cterm.font = prim_aep->ae_u.cterm.font;
#ifdef FEAT_TERMGUICOLORS
		// If both fg and bg are not set fall back to cterm colors.
		// Helps for SpellBad which uses undercurl in the GUI.
		if (COLOR_INVALID(prim_aep->ae_u.cterm.fg_rgb)
			&& COLOR_INVALID(prim_aep->ae_u.cterm.bg_rgb))
		{
		    if (prim_aep->ae_u.cterm.fg_color > 0)
			new_en.ae_u.cterm.fg_rgb = CTERMCOLOR;
		    if (prim_aep->ae_u.cterm.bg_color > 0)
			new_en.ae_u.cterm.bg_rgb = CTERMCOLOR;
		}
		else
		{
		    if (prim_aep->ae_u.cterm.fg_rgb != INVALCOLOR)
			new_en.ae_u.cterm.fg_rgb = prim_aep->ae_u.cterm.fg_rgb;
		    if (prim_aep->ae_u.cterm.bg_rgb != INVALCOLOR)
			new_en.ae_u.cterm.bg_rgb = prim_aep->ae_u.cterm.bg_rgb;
		}
		if (prim_aep->ae_u.cterm.ul_rgb != INVALCOLOR)
		    new_en.ae_u.cterm.ul_rgb = prim_aep->ae_u.cterm.ul_rgb;
#endif
	    }
	}
	return get_attr_entry(&cterm_attr_table, &new_en);
    }

    if (char_attr > HL_ALL)
	char_aep = syn_term_attr2entry(char_attr);
    if (char_aep != NULL)
	new_en = *char_aep;
    else
    {
	CLEAR_FIELD(new_en);
	if (char_attr <= HL_ALL)
	    new_en.ae_attr = char_attr;
    }

    if (prim_attr <= HL_ALL)
	new_en.ae_attr = ATTR_COMBINE(new_en.ae_attr, prim_attr);
    else
    {
	prim_aep = syn_term_attr2entry(prim_attr);
	if (prim_aep != NULL)
	{
	    new_en.ae_attr = ATTR_COMBINE(new_en.ae_attr, prim_aep->ae_attr);
	    if (prim_aep->ae_u.term.start != NULL)
	    {
		new_en.ae_u.term.start = prim_aep->ae_u.term.start;
		new_en.ae_u.term.stop = prim_aep->ae_u.term.stop;
	    }
	}
    }
    return get_attr_entry(&term_attr_table, &new_en);
}

#ifdef FEAT_GUI
    attrentry_T *
syn_gui_attr2entry(int attr)
{
    attr -= ATTR_OFF;
    if (attr >= gui_attr_table.ga_len)	    // did ":syntax clear"
	return NULL;
    return &(GUI_ATTR_ENTRY(attr));
}
#endif

/*
 * Get the highlight attributes (HL_BOLD etc.) from an attribute nr.
 * Only to be used when "attr" > HL_ALL.
 */
    int
syn_attr2attr(int attr)
{
    attrentry_T	*aep;

#ifdef FEAT_GUI
    if (gui.in_use)
	aep = syn_gui_attr2entry(attr);
    else
#endif
	if (IS_CTERM)
	    aep = syn_cterm_attr2entry(attr);
	else
	    aep = syn_term_attr2entry(attr);

    if (aep == NULL)	    // highlighting not set
	return 0;
    return aep->ae_attr;
}


    attrentry_T *
syn_term_attr2entry(int attr)
{
    attr -= ATTR_OFF;
    if (attr >= term_attr_table.ga_len)	    // did ":syntax clear"
	return NULL;
    return &(TERM_ATTR_ENTRY(attr));
}

    attrentry_T *
syn_cterm_attr2entry(int attr)
{
    attr -= ATTR_OFF;
    if (attr >= cterm_attr_table.ga_len)	// did ":syntax clear"
	return NULL;
    return &(CTERM_ATTR_ENTRY(attr));
}

#define LIST_ATTR   1
#define LIST_STRING 2
#define LIST_INT    3

    static void
highlight_list_one(int id)
{
    hl_group_T	    *sgp;
    int		    didh = FALSE;

    sgp = &HL_TABLE()[id - 1];	    // index is ID minus one

    if (message_filtered(sgp->sg_name))
	return;

    didh = highlight_list_arg(id, didh, LIST_ATTR,
				    sgp->sg_term, NULL, "term");
    didh = highlight_list_arg(id, didh, LIST_STRING,
				    0, sgp->sg_start, "start");
    didh = highlight_list_arg(id, didh, LIST_STRING,
				    0, sgp->sg_stop, "stop");

    didh = highlight_list_arg(id, didh, LIST_ATTR,
				    sgp->sg_cterm, NULL, "cterm");
    didh = highlight_list_arg(id, didh, LIST_INT,
				    sgp->sg_cterm_fg, NULL, "ctermfg");
    didh = highlight_list_arg(id, didh, LIST_INT,
				    sgp->sg_cterm_bg, NULL, "ctermbg");
    didh = highlight_list_arg(id, didh, LIST_INT,
				    sgp->sg_cterm_ul, NULL, "ctermul");
    didh = highlight_list_arg(id, didh, LIST_INT,
				    sgp->sg_cterm_font, NULL, "ctermfont");

#if defined(FEAT_GUI) || defined(FEAT_EVAL)
    didh = highlight_list_arg(id, didh, LIST_ATTR,
				    sgp->sg_gui, NULL, "gui");
    didh = highlight_list_arg(id, didh, LIST_STRING,
				    0, sgp->sg_gui_fg_name, "guifg");
    didh = highlight_list_arg(id, didh, LIST_STRING,
				    0, sgp->sg_gui_bg_name, "guibg");
    didh = highlight_list_arg(id, didh, LIST_STRING,
				    0, sgp->sg_gui_sp_name, "guisp");
#endif
#ifdef FEAT_GUI
    didh = highlight_list_arg(id, didh, LIST_STRING,
				    0, sgp->sg_font_name, "font");
#endif

    if (sgp->sg_link && !got_int)
    {
	(void)syn_list_header(didh, 9999, id);
	didh = TRUE;
	msg_puts_attr("links to", HL_ATTR(HLF_D));
	msg_putchar(' ');
	msg_outtrans(HL_TABLE()[HL_TABLE()[id - 1].sg_link - 1].sg_name);
    }

    if (!didh)
	highlight_list_arg(id, didh, LIST_STRING, 0, (char_u *)"cleared", "");
#ifdef FEAT_EVAL
    if (p_verbose > 0)
	last_set_msg(sgp->sg_script_ctx);
#endif
}

    static int
highlight_list_arg(
    int		id,
    int		didh,
    int		type,
    int		iarg,
    char_u	*sarg,
    char	*name)
{
    char_u	buf[MAX_ATTR_LEN];
    char_u	*ts;
    int		i;

    if (got_int)
	return FALSE;

    if (type == LIST_STRING ? (sarg == NULL) : (iarg == 0))
	return didh;

    ts = buf;
    if (type == LIST_INT)
	sprintf((char *)buf, "%d", iarg - 1);
    else if (type == LIST_STRING)
	ts = sarg;
    else // type == LIST_ATTR
    {
	buf[0] = NUL;
	for (i = 0; hl_attr_table[i] != 0; ++i)
	{
	    if (iarg & hl_attr_table[i])
	    {
		if (buf[0] != NUL)
		    vim_strcat(buf, (char_u *)",", MAX_ATTR_LEN);
		vim_strcat(buf, (char_u *)hl_name_table[i], MAX_ATTR_LEN);
		iarg &= ~hl_attr_table[i];	    // don't want "inverse"
	    }
	}
    }

    (void)syn_list_header(didh,
	    (int)(vim_strsize(ts) + STRLEN(name) + 1), id);
    didh = TRUE;
    if (!got_int)
    {
	if (*name != NUL)
	{
	    msg_puts_attr(name, HL_ATTR(HLF_D));
	    msg_puts_attr("=", HL_ATTR(HLF_D));
	}
	msg_outtrans(ts);
    }
    return didh;
}

#if (((defined(FEAT_EVAL) || defined(FEAT_PRINTER))) && defined(FEAT_SYN_HL)) || defined(PROTO)
/*
 * Return "1" if highlight group "id" has attribute "flag".
 * Return NULL otherwise.
 */
    char_u *
highlight_has_attr(
    int		id,
    int		flag,
    int		modec)	// 'g' for GUI, 'c' for cterm, 't' for term
{
    int		attr;

    if (id <= 0 || id > highlight_ga.ga_len)
	return NULL;

#if defined(FEAT_GUI) || defined(FEAT_EVAL)
    if (modec == 'g')
	attr = HL_TABLE()[id - 1].sg_gui;
    else
#endif
    {
	if (modec == 'c')
	    attr = HL_TABLE()[id - 1].sg_cterm;
	else
	    attr = HL_TABLE()[id - 1].sg_term;
    }

    if (attr & flag)
	return (char_u *)"1";
    return NULL;
}
#endif

#if (defined(FEAT_SYN_HL) && defined(FEAT_EVAL)) || defined(PROTO)
/*
 * Return color name of highlight group "id".
 */
    char_u *
highlight_color(
    int		id,
    char_u	*what,	// "font", "fg", "bg", "sp", "ul", "fg#", "bg#" or "sp#"
    int		modec)	// 'g' for GUI, 'c' for cterm, 't' for term
{
    static char_u	name[20];
    int			n;
    int			fg = FALSE;
    int			sp = FALSE;
    int			ul = FALSE;
    int			font = FALSE;

    if (id <= 0 || id > highlight_ga.ga_len)
	return NULL;

    if (TOLOWER_ASC(what[0]) == 'f' && TOLOWER_ASC(what[1]) == 'g')
	fg = TRUE;
    else if (TOLOWER_ASC(what[0]) == 'f' && TOLOWER_ASC(what[1]) == 'o'
	     && TOLOWER_ASC(what[2]) == 'n' && TOLOWER_ASC(what[3]) == 't')
	font = TRUE;
    else if (TOLOWER_ASC(what[0]) == 's' && TOLOWER_ASC(what[1]) == 'p')
	sp = TRUE;
    else if (TOLOWER_ASC(what[0]) == 'u' && TOLOWER_ASC(what[1]) == 'l')
	ul = TRUE;
    else if (!(TOLOWER_ASC(what[0]) == 'b' && TOLOWER_ASC(what[1]) == 'g'))
	return NULL;
    if (modec == 'g')
    {
# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
#  ifdef FEAT_GUI
	// return font name
	if (font)
	    return HL_TABLE()[id - 1].sg_font_name;
#  endif

	// return #RRGGBB form (only possible when GUI is running)
	if ((USE_24BIT) && what[2] == '#')
	{
	    guicolor_T		color;
	    long_u		rgb;
	    static char_u	buf[10];

	    if (fg)
		color = HL_TABLE()[id - 1].sg_gui_fg;
	    else if (sp)
		color = HL_TABLE()[id - 1].sg_gui_sp;
	    else
		color = HL_TABLE()[id - 1].sg_gui_bg;
	    if (color == INVALCOLOR)
		return NULL;
	    rgb = (long_u)GUI_MCH_GET_RGB(color);
	    sprintf((char *)buf, "#%02x%02x%02x",
				      (unsigned)(rgb >> 16),
				      (unsigned)(rgb >> 8) & 255,
				      (unsigned)rgb & 255);
	    return buf;
	}
# endif
	if (fg)
	    return (HL_TABLE()[id - 1].sg_gui_fg_name);
	if (sp)
	    return (HL_TABLE()[id - 1].sg_gui_sp_name);
	return (HL_TABLE()[id - 1].sg_gui_bg_name);
    }
    if (sp)
	return NULL;
    if (modec == 'c')
    {
	if (fg)
	    n = HL_TABLE()[id - 1].sg_cterm_fg - 1;
	else if (ul)
	    n = HL_TABLE()[id - 1].sg_cterm_ul - 1;
	else if (font)
	    n = HL_TABLE()[id - 1].sg_cterm_font - 1;
	else
	    n = HL_TABLE()[id - 1].sg_cterm_bg - 1;
	if (n < 0)
	    return NULL;
	sprintf((char *)name, "%d", n);
	return name;
    }
    // term doesn't have color
    return NULL;
}
#endif

#if (defined(FEAT_SYN_HL) \
	    && (defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)) \
	&& defined(FEAT_PRINTER)) || defined(PROTO)
/*
 * Return color name of highlight group "id" as RGB value.
 */
    long_u
highlight_gui_color_rgb(
    int		id,
    int		fg)	// TRUE = fg, FALSE = bg
{
    guicolor_T	color;

    if (id <= 0 || id > highlight_ga.ga_len)
	return 0L;

    if (fg)
	color = HL_TABLE()[id - 1].sg_gui_fg;
    else
	color = HL_TABLE()[id - 1].sg_gui_bg;

    if (color == INVALCOLOR)
	return 0L;

    return GUI_MCH_GET_RGB(color);
}
#endif

/*
 * Output the syntax list header.
 * Return TRUE when started a new line.
 */
    int
syn_list_header(
    int	    did_header,		// did header already
    int	    outlen,		// length of string that comes
    int	    id)			// highlight group id
{
    int	    endcol = 19;
    int	    newline = TRUE;
    int	    name_col = 0;

    if (!did_header)
    {
	msg_putchar('\n');
	if (got_int)
	    return TRUE;
	msg_outtrans(HL_TABLE()[id - 1].sg_name);
	name_col = msg_col;
	endcol = 15;
    }
    else if (msg_col + outlen + 1 >= Columns)
    {
	msg_putchar('\n');
	if (got_int)
	    return TRUE;
    }
    else
    {
	if (msg_col >= endcol)	// wrap around is like starting a new line
	    newline = FALSE;
    }

    if (msg_col >= endcol)	// output at least one space
	endcol = msg_col + 1;
    if (Columns <= endcol)	// avoid hang for tiny window
	endcol = Columns - 1;

    msg_advance(endcol);

    // Show "xxx" with the attributes.
    if (!did_header)
    {
	if (endcol == Columns - 1 && endcol <= name_col)
	    msg_putchar(' ');
	msg_puts_attr("xxx", syn_id2attr(id));
	msg_putchar(' ');
    }

    return newline;
}

/*
 * Set the attribute numbers for a highlight group.
 * Called after one of the attributes has changed.
 */
    static void
set_hl_attr(
    int		idx)	    // index in array
{
    attrentry_T	    at_en;
    hl_group_T	    *sgp = HL_TABLE() + idx;

    // The "Normal" group doesn't need an attribute number
    if (sgp->sg_name_u != NULL && STRCMP(sgp->sg_name_u, "NORMAL") == 0)
	return;

#ifdef FEAT_GUI
    // For the GUI mode: If there are other than "normal" highlighting
    // attributes, need to allocate an attr number.
    if (sgp->sg_gui_fg == INVALCOLOR
	    && sgp->sg_gui_bg == INVALCOLOR
	    && sgp->sg_gui_sp == INVALCOLOR
	    && sgp->sg_font == NOFONT
# ifdef FEAT_XFONTSET
	    && sgp->sg_fontset == NOFONTSET
# endif
	    )
    {
	sgp->sg_gui_attr = sgp->sg_gui;
    }
    else
    {
	at_en.ae_attr = sgp->sg_gui;
	at_en.ae_u.gui.fg_color = sgp->sg_gui_fg;
	at_en.ae_u.gui.bg_color = sgp->sg_gui_bg;
	at_en.ae_u.gui.sp_color = sgp->sg_gui_sp;
	at_en.ae_u.gui.font = sgp->sg_font;
# ifdef FEAT_XFONTSET
	at_en.ae_u.gui.fontset = sgp->sg_fontset;
# endif
	sgp->sg_gui_attr = get_attr_entry(&gui_attr_table, &at_en);
    }
#endif
    // For the term mode: If there are other than "normal" highlighting
    // attributes, need to allocate an attr number.
    if (sgp->sg_start == NULL && sgp->sg_stop == NULL)
	sgp->sg_term_attr = sgp->sg_term;
    else
    {
	at_en.ae_attr = sgp->sg_term;
	at_en.ae_u.term.start = sgp->sg_start;
	at_en.ae_u.term.stop = sgp->sg_stop;
	sgp->sg_term_attr = get_attr_entry(&term_attr_table, &at_en);
    }

    // For the color term mode: If there are other than "normal"
    // highlighting attributes, need to allocate an attr number.
    if (sgp->sg_cterm_fg == 0 && sgp->sg_cterm_bg == 0 &&
	sgp->sg_cterm_ul == 0 && sgp->sg_cterm_font == 0
# ifdef FEAT_TERMGUICOLORS
	    && sgp->sg_gui_fg == INVALCOLOR
	    && sgp->sg_gui_bg == INVALCOLOR
	    && sgp->sg_gui_sp == INVALCOLOR
# endif
	    )
	sgp->sg_cterm_attr = sgp->sg_cterm;
    else
    {
	at_en.ae_attr = sgp->sg_cterm;
	at_en.ae_u.cterm.fg_color = sgp->sg_cterm_fg;
	at_en.ae_u.cterm.bg_color = sgp->sg_cterm_bg;
	at_en.ae_u.cterm.ul_color = sgp->sg_cterm_ul;
	at_en.ae_u.cterm.font = sgp->sg_cterm_font;
# ifdef FEAT_TERMGUICOLORS
	at_en.ae_u.cterm.fg_rgb = GUI_MCH_GET_RGB2(sgp->sg_gui_fg);
	at_en.ae_u.cterm.bg_rgb = GUI_MCH_GET_RGB2(sgp->sg_gui_bg);
	// Only use the underline/undercurl color when used, it may clear the
	// background color if not supported.
	if (sgp->sg_cterm & (HL_UNDERLINE | HL_UNDERCURL
			   | HL_UNDERDOUBLE | HL_UNDERDOTTED | HL_UNDERDASHED))
	    at_en.ae_u.cterm.ul_rgb = GUI_MCH_GET_RGB2(sgp->sg_gui_sp);
	else
	    at_en.ae_u.cterm.ul_rgb = INVALCOLOR;
	if (at_en.ae_u.cterm.fg_rgb == INVALCOLOR
		&& at_en.ae_u.cterm.bg_rgb == INVALCOLOR)
	{
	    // If both fg and bg are invalid fall back to the cterm colors.
	    // Helps when the GUI only uses an attribute, e.g. undercurl.
	    at_en.ae_u.cterm.fg_rgb = CTERMCOLOR;
	    at_en.ae_u.cterm.bg_rgb = CTERMCOLOR;
	}
# endif
	sgp->sg_cterm_attr = get_attr_entry(&cterm_attr_table, &at_en);
    }
}

/*
 * Lookup a highlight group name and return its ID.
 * If it is not found, 0 is returned.
 */
    int
syn_name2id(char_u *name)
{
    int		i;
    char_u	name_u[MAX_SYN_NAME + 1];

    // Avoid using stricmp() too much, it's slow on some systems
    // Avoid alloc()/free(), these are slow too.  ID names over 200 chars
    // don't deserve to be found!
    vim_strncpy(name_u, name, MAX_SYN_NAME);
    vim_strup(name_u);
    for (i = highlight_ga.ga_len; --i >= 0; )
	if (HL_TABLE()[i].sg_name_u != NULL
		&& STRCMP(name_u, HL_TABLE()[i].sg_name_u) == 0)
	    break;
    return i + 1;
}

/*
 * Lookup a highlight group name and return its attributes.
 * Return zero if not found.
 */
    int
syn_name2attr(char_u *name)
{
    int id = syn_name2id(name);

    if (id != 0)
	return syn_id2attr(id);
    return 0;
}

#if defined(FEAT_EVAL) || defined(PROTO)
/*
 * Return TRUE if highlight group "name" exists.
 */
    int
highlight_exists(char_u *name)
{
    return (syn_name2id(name) > 0);
}

# if defined(FEAT_SEARCH_EXTRA) || defined(PROTO)
/*
 * Return the name of highlight group "id".
 * When not a valid ID return an empty string.
 */
    char_u *
syn_id2name(int id)
{
    if (id <= 0 || id > highlight_ga.ga_len)
	return (char_u *)"";
    return HL_TABLE()[id - 1].sg_name;
}
# endif
#endif

/*
 * Like syn_name2id(), but take a pointer + length argument.
 */
    int
syn_namen2id(char_u *linep, int len)
{
    char_u  *name;
    int	    id = 0;

    name = vim_strnsave(linep, len);
    if (name == NULL)
	return 0;

    id = syn_name2id(name);
    vim_free(name);
    return id;
}

/*
 * Find highlight group name in the table and return its ID.
 * The argument is a pointer to the name and the length of the name.
 * If it doesn't exist yet, a new entry is created.
 * Return 0 for failure.
 */
    int
syn_check_group(char_u *pp, int len)
{
    int	    id;
    char_u  *name;

    if (len > MAX_SYN_NAME)
    {
	emsg(_(e_highlight_group_name_too_long));
	return 0;
    }
    name = vim_strnsave(pp, len);
    if (name == NULL)
	return 0;

    id = syn_name2id(name);
    if (id == 0)			// doesn't exist yet
	id = syn_add_group(name);
    else
	vim_free(name);
    return id;
}

/*
 * Add new highlight group and return its ID.
 * "name" must be an allocated string, it will be consumed.
 * Return 0 for failure.
 */
    static int
syn_add_group(char_u *name)
{
    char_u	*p;
    char_u	*name_up;

    // Check that the name is valid (ASCII letters, digits, underscores, dots, or hyphens).
    for (p = name; *p != NUL; ++p)
    {
	if (!vim_isprintc(*p))
	{
	    emsg(_(e_unprintable_character_in_group_name));
	    vim_free(name);
	    return 0;
	}
	else if (!ASCII_ISALNUM(*p) && *p != '_' && *p != '.' && *p != '-')
	{
	    // This is an error, but since there previously was no check only
	    // give a warning.
	    msg_source(HL_ATTR(HLF_W));
	    msg(_("W18: Invalid character in group name"));
	    break;
	}
    }

    // First call for this growarray: init growing array.
    if (highlight_ga.ga_data == NULL)
    {
	highlight_ga.ga_itemsize = sizeof(hl_group_T);
	highlight_ga.ga_growsize = 10;
    }

    if (highlight_ga.ga_len >= MAX_HL_ID)
    {
	emsg(_(e_too_many_highlight_and_syntax_groups));
	vim_free(name);
	return 0;
    }

    // Make room for at least one other syntax_highlight entry.
    if (ga_grow(&highlight_ga, 1) == FAIL)
    {
	vim_free(name);
	return 0;
    }

    name_up = vim_strsave_up(name);
    if (name_up == NULL)
    {
	vim_free(name);
	return 0;
    }

    CLEAR_POINTER(&(HL_TABLE()[highlight_ga.ga_len]));
    HL_TABLE()[highlight_ga.ga_len].sg_name = name;
    HL_TABLE()[highlight_ga.ga_len].sg_name_u = name_up;
#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    HL_TABLE()[highlight_ga.ga_len].sg_gui_bg = INVALCOLOR;
    HL_TABLE()[highlight_ga.ga_len].sg_gui_fg = INVALCOLOR;
    HL_TABLE()[highlight_ga.ga_len].sg_gui_sp = INVALCOLOR;
#endif
    ++highlight_ga.ga_len;

    return highlight_ga.ga_len;		    // ID is index plus one
}

/*
 * When, just after calling syn_add_group(), an error is discovered, this
 * function deletes the new name.
 */
    static void
syn_unadd_group(void)
{
    --highlight_ga.ga_len;
    vim_free(HL_TABLE()[highlight_ga.ga_len].sg_name);
    vim_free(HL_TABLE()[highlight_ga.ga_len].sg_name_u);
}

/*
 * Translate a group ID to highlight attributes.
 * "hl_id" must be valid: > 0, caller must check.
 */
    int
syn_id2attr(int hl_id)
{
    int		attr;
    hl_group_T	*sgp;

    hl_id = syn_get_final_id(hl_id);
    sgp = &HL_TABLE()[hl_id - 1];	    // index is ID minus one

#ifdef FEAT_GUI
    // Only use GUI attr when the GUI is being used.
    if (gui.in_use)
	attr = sgp->sg_gui_attr;
    else
#endif
	if (IS_CTERM)
	    attr = sgp->sg_cterm_attr;
	else
	    attr = sgp->sg_term_attr;

    return attr;
}

#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS) || defined(PROTO)
/*
 * Get the GUI colors and attributes for a group ID.
 * NOTE: the colors will be INVALCOLOR when not set, the color otherwise.
 */
    int
syn_id2colors(int hl_id, guicolor_T *fgp, guicolor_T *bgp)
{
    hl_group_T	*sgp;

    hl_id = syn_get_final_id(hl_id);
    sgp = &HL_TABLE()[hl_id - 1];	    // index is ID minus one

    *fgp = sgp->sg_gui_fg;
    *bgp = sgp->sg_gui_bg;
    return sgp->sg_gui;
}
#endif

#if (defined(MSWIN) \
	    && (!defined(FEAT_GUI_MSWIN) || defined(VIMDLL)) \
	    && defined(FEAT_TERMGUICOLORS)) \
	|| defined(FEAT_TERMINAL) || defined(PROTO)
    void
syn_id2cterm_bg(int hl_id, int *fgp, int *bgp)
{
    hl_group_T	*sgp;

    hl_id = syn_get_final_id(hl_id);
    sgp = &HL_TABLE()[hl_id - 1];	    // index is ID minus one
    *fgp = sgp->sg_cterm_fg - 1;
    *bgp = sgp->sg_cterm_bg - 1;
}
#endif

/*
 * Translate a group ID to the final group ID (following links).
 */
    int
syn_get_final_id(int hl_id)
{
    int		count;
    hl_group_T	*sgp;

    if (hl_id > highlight_ga.ga_len || hl_id < 1)
	return 0;			// Can be called from eval!!

    // Follow links until there is no more.
    // Look out for loops!  Break after 100 links.
    for (count = 100; --count >= 0; )
    {
	sgp = &HL_TABLE()[hl_id - 1];	    // index is ID minus one
	if (sgp->sg_link == 0 || sgp->sg_link > highlight_ga.ga_len)
	    break;
	hl_id = sgp->sg_link;
    }

    return hl_id;
}

#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS) || defined(PROTO)
/*
 * Call this function just after the GUI has started.
 * Also called when 'termguicolors' was set, gui.in_use will be FALSE then.
 * It finds the font and color handles for the highlighting groups.
 */
    void
highlight_gui_started(void)
{
    int	    idx;

    // First get the colors from the "Normal" and "Menu" group, if set
    if (USE_24BIT)
	set_normal_colors();

    for (idx = 0; idx < highlight_ga.ga_len; ++idx)
	gui_do_one_color(idx, FALSE, FALSE);

    highlight_changed();
}

    static void
gui_do_one_color(
    int		idx,
    int		do_menu UNUSED,	   // TRUE: might set the menu font
    int		do_tooltip UNUSED) // TRUE: might set the tooltip font
{
    int		didit = FALSE;

# ifdef FEAT_GUI
#  ifdef FEAT_TERMGUICOLORS
    if (gui.in_use)
#  endif
	if (HL_TABLE()[idx].sg_font_name != NULL)
	{
	    hl_do_font(idx, HL_TABLE()[idx].sg_font_name, FALSE, do_menu,
							    do_tooltip, TRUE);
	    didit = TRUE;
	}
# endif
    if (HL_TABLE()[idx].sg_gui_fg_name != NULL)
    {
	HL_TABLE()[idx].sg_gui_fg =
			    color_name2handle(HL_TABLE()[idx].sg_gui_fg_name);
	didit = TRUE;
    }
    if (HL_TABLE()[idx].sg_gui_bg_name != NULL)
    {
	HL_TABLE()[idx].sg_gui_bg =
			    color_name2handle(HL_TABLE()[idx].sg_gui_bg_name);
	didit = TRUE;
    }
    if (HL_TABLE()[idx].sg_gui_sp_name != NULL)
    {
	HL_TABLE()[idx].sg_gui_sp =
			    color_name2handle(HL_TABLE()[idx].sg_gui_sp_name);
	didit = TRUE;
    }
    if (didit)	// need to get a new attr number
	set_hl_attr(idx);
}
#endif

#if defined(USER_HIGHLIGHT) && defined(FEAT_STL_OPT)
/*
 * Apply difference between User[1-9] and HLF_S to HLF_SNC, HLF_ST or HLF_STNC.
 */
    static void
combine_stl_hlt(
	int id,
	int id_S,
	int id_alt,
	int hlcnt,
	int i,
	int hlf,
	int *table)
{
    hl_group_T *hlt = HL_TABLE();

    if (id_alt == 0)
    {
	CLEAR_POINTER(&hlt[hlcnt + i]);
	hlt[hlcnt + i].sg_term = highlight_attr[hlf];
	hlt[hlcnt + i].sg_cterm = highlight_attr[hlf];
#  if defined(FEAT_GUI) || defined(FEAT_EVAL)
	hlt[hlcnt + i].sg_gui = highlight_attr[hlf];
#  endif
    }
    else
	mch_memmove(&hlt[hlcnt + i],
		    &hlt[id_alt - 1],
		    sizeof(hl_group_T));
    hlt[hlcnt + i].sg_link = 0;

    hlt[hlcnt + i].sg_term ^=
	hlt[id - 1].sg_term ^ hlt[id_S - 1].sg_term;
    if (hlt[id - 1].sg_start != hlt[id_S - 1].sg_start)
	hlt[hlcnt + i].sg_start = hlt[id - 1].sg_start;
    if (hlt[id - 1].sg_stop != hlt[id_S - 1].sg_stop)
	hlt[hlcnt + i].sg_stop = hlt[id - 1].sg_stop;
    hlt[hlcnt + i].sg_cterm ^=
	hlt[id - 1].sg_cterm ^ hlt[id_S - 1].sg_cterm;
    if (hlt[id - 1].sg_cterm_fg != hlt[id_S - 1].sg_cterm_fg)
	hlt[hlcnt + i].sg_cterm_fg = hlt[id - 1].sg_cterm_fg;
    if (hlt[id - 1].sg_cterm_bg != hlt[id_S - 1].sg_cterm_bg)
	hlt[hlcnt + i].sg_cterm_bg = hlt[id - 1].sg_cterm_bg;
    if (hlt[id - 1].sg_cterm_font != hlt[id_S - 1].sg_cterm_font)
	hlt[hlcnt + i].sg_cterm_font = hlt[id - 1].sg_cterm_font;
#  if defined(FEAT_GUI) || defined(FEAT_EVAL)
    hlt[hlcnt + i].sg_gui ^=
	hlt[id - 1].sg_gui ^ hlt[id_S - 1].sg_gui;
#  endif
#  ifdef FEAT_GUI
    if (hlt[id - 1].sg_gui_fg != hlt[id_S - 1].sg_gui_fg)
	hlt[hlcnt + i].sg_gui_fg = hlt[id - 1].sg_gui_fg;
    if (hlt[id - 1].sg_gui_bg != hlt[id_S - 1].sg_gui_bg)
	hlt[hlcnt + i].sg_gui_bg = hlt[id - 1].sg_gui_bg;
    if (hlt[id - 1].sg_gui_sp != hlt[id_S - 1].sg_gui_sp)
	hlt[hlcnt + i].sg_gui_sp = hlt[id - 1].sg_gui_sp;
    if (hlt[id - 1].sg_font != hlt[id_S - 1].sg_font)
	hlt[hlcnt + i].sg_font = hlt[id - 1].sg_font;
#   ifdef FEAT_XFONTSET
    if (hlt[id - 1].sg_fontset != hlt[id_S - 1].sg_fontset)
	hlt[hlcnt + i].sg_fontset = hlt[id - 1].sg_fontset;
#   endif
#  endif
    highlight_ga.ga_len = hlcnt + i + 1;
    set_hl_attr(hlcnt + i);	// At long last we can apply
    table[i] = syn_id2attr(hlcnt + i + 1);
}
#endif

/*
 * Translate the 'highlight' option into attributes in highlight_attr[] and
 * set up the user highlights User1..9.  If FEAT_STL_OPT is in use, a set of
 * corresponding highlights to use on top of HLF_SNC is computed.
 * Called only when the 'highlight' option has been changed and upon first
 * screen redraw after any :highlight command.
 * Return FAIL when an invalid flag is found in 'highlight'.  OK otherwise.
 */
    int
highlight_changed(void)
{
    int		hlf;
    int		i;
    char_u	*p;
    int		attr;
    char_u	*end;
    int		id;
#ifdef USER_HIGHLIGHT
    char_u      userhl[30];  // use 30 to avoid compiler warning
# ifdef FEAT_STL_OPT
    int		id_S = -1;
    int		id_SNC = 0;
#  ifdef FEAT_TERMINAL
    int		id_ST = 0;
    int		id_STNC = 0;
#  endif
    int		hlcnt;
# endif
#endif
    static int	hl_flags[HLF_COUNT] = HL_FLAGS;

    need_highlight_changed = FALSE;

#ifdef FEAT_TERMINAL
    term_update_colors_all();
    term_update_wincolor_all();
#endif

    // Clear all attributes.
    for (hlf = 0; hlf < (int)HLF_COUNT; ++hlf)
	highlight_attr[hlf] = 0;

    // First set all attributes to their default value.
    // Then use the attributes from the 'highlight' option.
    for (i = 0; i < 2; ++i)
    {
	if (i)
	    p = p_hl;
	else
	    p = get_highlight_default();
	if (p == NULL)	    // just in case
	    continue;

	while (*p)
	{
	    for (hlf = 0; hlf < (int)HLF_COUNT; ++hlf)
		if (hl_flags[hlf] == *p)
		    break;
	    ++p;
	    if (hlf == (int)HLF_COUNT || *p == NUL)
		return FAIL;

	    // Allow several hl_flags to be combined, like "bu" for
	    // bold-underlined.
	    attr = 0;
	    for ( ; *p && *p != ','; ++p)	    // parse up to comma
	    {
		if (VIM_ISWHITE(*p))		    // ignore white space
		    continue;

		if (attr > HL_ALL)  // Combination with ':' is not allowed.
		    return FAIL;

		// Note: Keep this in sync with expand_set_highlight().
		switch (*p)
		{
		    case 'b':	attr |= HL_BOLD;
				break;
		    case 'i':	attr |= HL_ITALIC;
				break;
		    case '-':
		    case 'n':			    // no highlighting
				break;
		    case 'r':	attr |= HL_INVERSE;
				break;
		    case 's':	attr |= HL_STANDOUT;
				break;
		    case 'u':	attr |= HL_UNDERLINE;
				break;
		    case 'c':	attr |= HL_UNDERCURL;
				break;
		    case '2':	attr |= HL_UNDERDOUBLE;
				break;
		    case 'd':	attr |= HL_UNDERDOTTED;
				break;
		    case '=':	attr |= HL_UNDERDASHED;
				break;
		    case 't':	attr |= HL_STRIKETHROUGH;
				break;
		    case ':':	++p;		    // highlight group name
				if (attr || *p == NUL)	 // no combinations
				    return FAIL;
				end = vim_strchr(p, ',');
				if (end == NULL)
				    end = p + STRLEN(p);
				id = syn_check_group(p, (int)(end - p));
				if (id == 0)
				    return FAIL;
				attr = syn_id2attr(id);
				p = end - 1;
#if defined(FEAT_STL_OPT) && defined(USER_HIGHLIGHT)
				if (hlf == (int)HLF_SNC)
				    id_SNC = syn_get_final_id(id);
# ifdef FEAT_TERMINAL
				else if (hlf == (int)HLF_ST)
				    id_ST = syn_get_final_id(id);
				else if (hlf == (int)HLF_STNC)
				    id_STNC = syn_get_final_id(id);
# endif
				else if (hlf == (int)HLF_S)
				    id_S = syn_get_final_id(id);
#endif
				break;
		    default:	return FAIL;
		}
	    }
	    highlight_attr[hlf] = attr;

	    p = skip_to_option_part(p);	    // skip comma and spaces
	}
    }

#ifdef USER_HIGHLIGHT
    // Setup the user highlights
    //
    // Temporarily utilize 28 more hl entries:
    // 9 for User1-User9 combined with StatusLineNC
    // 9 for User1-User9 combined with StatusLineTerm
    // 9 for User1-User9 combined with StatusLineTermNC
    // 1 for StatusLine default
    // Have to be in there simultaneously in case of table overflows in
    // get_attr_entry()
# ifdef FEAT_STL_OPT
    if (ga_grow(&highlight_ga, 28) == FAIL)
	return FAIL;
    hlcnt = highlight_ga.ga_len;
    if (id_S == -1)
    {
	// Make sure id_S is always valid to simplify code below. Use the last
	// entry.
	CLEAR_POINTER(&HL_TABLE()[hlcnt + 27]);
	HL_TABLE()[hlcnt + 18].sg_term = highlight_attr[HLF_S];
	id_S = hlcnt + 19;
    }
# endif
    for (i = 0; i < 9; i++)
    {
	sprintf((char *)userhl, "User%d", i + 1);
	id = syn_name2id(userhl);
	if (id == 0)
	{
	    highlight_user[i] = 0;
# ifdef FEAT_STL_OPT
	    highlight_stlnc[i] = 0;
#  ifdef FEAT_TERMINAL
	    highlight_stlterm[i] = 0;
	    highlight_stltermnc[i] = 0;
#  endif
# endif
	}
	else
	{
	    highlight_user[i] = syn_id2attr(id);
# ifdef FEAT_STL_OPT
	    combine_stl_hlt(id, id_S, id_SNC, hlcnt, i,
						     HLF_SNC, highlight_stlnc);
#  ifdef FEAT_TERMINAL
	    combine_stl_hlt(id, id_S, id_ST, hlcnt + 9, i,
						    HLF_ST, highlight_stlterm);
	    combine_stl_hlt(id, id_S, id_STNC, hlcnt + 18, i,
						HLF_STNC, highlight_stltermnc);
#  endif
# endif
	}
    }
# ifdef FEAT_STL_OPT
    highlight_ga.ga_len = hlcnt;
# endif

#endif // USER_HIGHLIGHT

    return OK;
}

static void highlight_list(void);
static void highlight_list_two(int cnt, int attr);

/*
 * Handle command line completion for :highlight command.
 */
    void
set_context_in_highlight_cmd(expand_T *xp, char_u *arg)
{
    char_u	*p;

    // Default: expand group names
    xp->xp_context = EXPAND_HIGHLIGHT;
    xp->xp_pattern = arg;
    include_link = 2;
    include_default = 1;

    if (*arg == NUL)
	return;

    // (part of) subcommand already typed
    p = skiptowhite(arg);
    if (*p == NUL)
	return;

    // past "default" or group name
    include_default = 0;
    if (STRNCMP("default", arg, p - arg) == 0)
    {
	arg = skipwhite(p);
	xp->xp_pattern = arg;
	p = skiptowhite(arg);
    }
    if (*p == NUL)
	return;

    // past group name
    include_link = 0;
    if (arg[1] == 'i' && arg[0] == 'N')
	highlight_list();
    if (STRNCMP("link", arg, p - arg) == 0
	    || STRNCMP("clear", arg, p - arg) == 0)
    {
	xp->xp_pattern = skipwhite(p);
	p = skiptowhite(xp->xp_pattern);
	if (*p != NUL)		// past first group name
	{
	    xp->xp_pattern = skipwhite(p);
	    p = skiptowhite(xp->xp_pattern);
	}
    }
    if (*p != NUL)			// past group name(s)
	xp->xp_context = EXPAND_NOTHING;
}

/*
 * List highlighting matches in a nice way.
 */
    static void
highlight_list(void)
{
    int		i;

    for (i = 10; --i >= 0; )
	highlight_list_two(i, HL_ATTR(HLF_D));
    for (i = 40; --i >= 0; )
	highlight_list_two(99, 0);
}

    static void
highlight_list_two(int cnt, int attr)
{
    msg_puts_attr(&("N \bI \b!  \b"[cnt / 11]), attr);
    msg_clr_eos();
    out_flush();
    ui_delay(cnt == 99 ? 40L : (long)cnt * 50L, FALSE);
}

/*
 * Function given to ExpandGeneric() to obtain the list of group names.
 */
    char_u *
get_highlight_name(expand_T *xp UNUSED, int idx)
{
    return get_highlight_name_ext(xp, idx, TRUE);
}

/*
 * Obtain a highlight group name.
 * When "skip_cleared" is TRUE don't return a cleared entry.
 */
    char_u *
get_highlight_name_ext(expand_T *xp UNUSED, int idx, int skip_cleared)
{
    if (idx < 0)
	return NULL;

    // Items are never removed from the table, skip the ones that were
    // cleared.
    if (skip_cleared && idx < highlight_ga.ga_len && HL_TABLE()[idx].sg_cleared)
	return (char_u *)"";

    if (idx == highlight_ga.ga_len && include_none != 0)
	return (char_u *)"none";
    if (idx == highlight_ga.ga_len + include_none && include_default != 0)
	return (char_u *)"default";
    if (idx == highlight_ga.ga_len + include_none + include_default
							 && include_link != 0)
	return (char_u *)"link";
    if (idx == highlight_ga.ga_len + include_none + include_default + 1
							 && include_link != 0)
	return (char_u *)"clear";
    if (idx >= highlight_ga.ga_len)
	return NULL;
    return HL_TABLE()[idx].sg_name;
}

#if defined(FEAT_GUI) || defined(PROTO)
/*
 * Free all the highlight group fonts.
 * Used when quitting for systems which need it.
 */
    void
free_highlight_fonts(void)
{
    int	    idx;

    for (idx = 0; idx < highlight_ga.ga_len; ++idx)
    {
	gui_mch_free_font(HL_TABLE()[idx].sg_font);
	HL_TABLE()[idx].sg_font = NOFONT;
# ifdef FEAT_XFONTSET
	gui_mch_free_fontset(HL_TABLE()[idx].sg_fontset);
	HL_TABLE()[idx].sg_fontset = NOFONTSET;
# endif
    }

    gui_mch_free_font(gui.norm_font);
# ifdef FEAT_XFONTSET
    gui_mch_free_fontset(gui.fontset);
# endif
# ifndef FEAT_GUI_GTK
    gui_mch_free_font(gui.bold_font);
    gui_mch_free_font(gui.ital_font);
    gui_mch_free_font(gui.boldital_font);
# endif
}
#endif

#if defined(FEAT_EVAL) || defined(PROTO)
/*
 * Convert each of the highlight attribute bits (bold, standout, underline,
 * etc.) set in 'hlattr' into a separate boolean item in a Dictionary with
 * the attribute name as the key.
 */
    static dict_T *
highlight_get_attr_dict(int hlattr)
{
    dict_T	*dict;
    int		i;

    dict = dict_alloc();
    if (dict == NULL)
	return NULL;

    for (i = 0; hl_attr_table[i] != 0; ++i)
    {
	if (hlattr & hl_attr_table[i])
	{
	    dict_add_bool(dict, hl_name_table[i], VVAL_TRUE);
	    hlattr &= ~hl_attr_table[i];	// don't want "inverse"
	}
    }

    return dict;
}

/*
 * Return the attributes of the highlight group at index 'hl_idx' as a
 * Dictionary. If 'resolve_link' is TRUE, then resolves the highlight group
 * links recursively.
 */
    static dict_T *
highlight_get_info(int hl_idx, int resolve_link)
{
    dict_T	*dict;
    hl_group_T	*sgp;
    dict_T	*attr_dict;
    int		hlgid;

    dict = dict_alloc();
    if (dict == NULL)
	return dict;

    sgp = &HL_TABLE()[hl_idx];
    // highlight group id is 1-based
    hlgid = hl_idx + 1;

    if (dict_add_string(dict, "name", sgp->sg_name) == FAIL)
	goto error;
    if (dict_add_number(dict, "id", hlgid) == FAIL)
	goto error;

    if (sgp->sg_link && resolve_link)
    {
	// resolve the highlight group link recursively
	while (sgp->sg_link)
	{
	    hlgid = sgp->sg_link;
	    sgp = &HL_TABLE()[sgp->sg_link - 1];
	}
    }

    if (sgp->sg_term != 0)
    {
	attr_dict = highlight_get_attr_dict(sgp->sg_term);
	if (attr_dict != NULL)
	    if (dict_add_dict(dict, "term", attr_dict) == FAIL)
		goto error;
    }
    if (sgp->sg_start != NULL)
	if (dict_add_string(dict, "start", sgp->sg_start) == FAIL)
	    goto error;
    if (sgp->sg_stop != NULL)
	if (dict_add_string(dict, "stop", sgp->sg_stop) == FAIL)
	    goto error;
    if (sgp->sg_cterm != 0)
    {
	attr_dict = highlight_get_attr_dict(sgp->sg_cterm);
	if (attr_dict != NULL)
	    if (dict_add_dict(dict, "cterm", attr_dict) == FAIL)
		goto error;
    }
    if (sgp->sg_cterm_fg != 0)
	if (dict_add_string(dict, "ctermfg",
		    highlight_color(hlgid, (char_u *)"fg", 'c')) == FAIL)
	    goto error;
    if (sgp->sg_cterm_bg != 0)
	if (dict_add_string(dict, "ctermbg",
			highlight_color(hlgid, (char_u *)"bg", 'c')) == FAIL)
	    goto error;
    if (sgp->sg_cterm_ul != 0)
	if (dict_add_string(dict, "ctermul",
			highlight_color(hlgid, (char_u *)"ul", 'c')) == FAIL)
	    goto error;
    if (sgp->sg_cterm_font != 0)
	if (dict_add_string(dict, "ctermfont",
			highlight_color(hlgid, (char_u *)"font", 'c')) == FAIL)
	    goto error;
    if (sgp->sg_gui != 0)
    {
	attr_dict = highlight_get_attr_dict(sgp->sg_gui);
	if (attr_dict != NULL)
	    if (dict_add_dict(dict, "gui", attr_dict) == FAIL)
		goto error;
    }
    if (sgp->sg_gui_fg_name != NULL)
	if (dict_add_string(dict, "guifg",
			highlight_color(hlgid, (char_u *)"fg", 'g')) == FAIL)
	    goto error;
    if (sgp->sg_gui_bg_name != NULL)
	if (dict_add_string(dict, "guibg",
			highlight_color(hlgid, (char_u *)"bg", 'g')) == FAIL)
	    goto error;
    if (sgp->sg_gui_sp_name != NULL)
	if (dict_add_string(dict, "guisp",
			highlight_color(hlgid, (char_u *)"sp", 'g')) == FAIL)
	    goto error;
# ifdef FEAT_GUI
    if (sgp->sg_font_name != NULL)
	if (dict_add_string(dict, "font", sgp->sg_font_name) == FAIL)
	    goto error;
# endif
    if (sgp->sg_link)
    {
	char_u	*link;

	link = HL_TABLE()[sgp->sg_link - 1].sg_name;
	if (link != NULL && dict_add_string(dict, "linksto", link) == FAIL)
	    goto error;

	if (sgp->sg_deflink)
	    dict_add_bool(dict, "default", VVAL_TRUE);
    }
    if (dict_len(dict) == 2)
	// If only 'name' is present, then the highlight group is cleared.
	dict_add_bool(dict, "cleared", VVAL_TRUE);

    return dict;

error:
    vim_free(dict);
    return NULL;
}

/*
 * "hlget([name])" function
 * Return the attributes of a specific highlight group (if specified) or all
 * the highlight groups.
 */
    void
f_hlget(typval_T *argvars, typval_T *rettv)
{
    list_T	*list;
    dict_T	*dict;
    int		i;
    char_u	*hlarg = NULL;
    int		resolve_link = FALSE;

    if (rettv_list_alloc(rettv) == FAIL)
	return;

    if (check_for_opt_string_arg(argvars, 0) == FAIL
	    || (argvars[0].v_type != VAR_UNKNOWN
		&& check_for_opt_bool_arg(argvars, 1) == FAIL))
	return;

    if (argvars[0].v_type != VAR_UNKNOWN)
    {
	// highlight group name supplied
	hlarg = tv_get_string_chk(&argvars[0]);
	if (hlarg == NULL)
	    return;

	if (argvars[1].v_type != VAR_UNKNOWN)
	{
	    int error = FALSE;

	    resolve_link = tv_get_bool_chk(&argvars[1], &error);
	    if (error)
		return;
	}
    }

    list = rettv->vval.v_list;
    for (i = 0; i < highlight_ga.ga_len && !got_int; ++i)
    {
	if (hlarg == NULL || STRICMP(hlarg, HL_TABLE()[i].sg_name) == 0)
	{
	    dict = highlight_get_info(i, resolve_link);
	    if (dict != NULL)
		list_append_dict(list, dict);
	}
    }
}

/*
 * Returns the string value at 'dict[key]'. Returns NULL, if 'key' is not in
 * 'dict' or the value is not a string type. If the value is not a string type
 * or is NULL, then 'error' is set to TRUE.
 */
    static char_u *
hldict_get_string(dict_T *dict, char_u *key, int *error)
{
    dictitem_T	*di;

    *error = FALSE;
    di = dict_find(dict, key, -1);
    if (di == NULL)
	return NULL;

    if (di->di_tv.v_type != VAR_STRING || di->di_tv.vval.v_string == NULL)
    {
	emsg(_(e_string_required));
	*error = TRUE;
	return NULL;
    }

    return di->di_tv.vval.v_string;
}

/*
 * Convert the highlight attribute Dictionary at 'dict[key]' into a string
 * value in 'attr_str' of length 'len'. Returns FALSE if 'dict[key]' is not a
 * Dictionary or is NULL.
 */
    static int
hldict_attr_to_str(
	dict_T	*dict,
	char_u	*key,
	char_u	*attr_str,
	size_t	len)
{
    dictitem_T	*di;
    dict_T	*attrdict;
    int		i;
    char_u	*p;
    size_t	sz;

    attr_str[0] = NUL;
    di = dict_find(dict, key, -1);
    if (di == NULL)
	return TRUE;

    if (di->di_tv.v_type != VAR_DICT || di->di_tv.vval.v_dict == NULL)
    {
	emsg(_(e_dictionary_required));
	return FALSE;
    }

    attrdict = di->di_tv.vval.v_dict;

    // If the attribute dict is empty, then return NONE to clear the attributes
    if (dict_len(attrdict) == 0)
    {
	vim_strcat(attr_str, (char_u *)"NONE", len);
	return TRUE;
    }

    p = attr_str;
    for (i = 0; i < (int)ARRAY_LENGTH(hl_name_table); i++)
    {
	if (dict_get_bool(attrdict, hl_name_table[i], VVAL_FALSE) == VVAL_TRUE)
	{
	    if (p != attr_str && (size_t)(p - attr_str + 2) < len)
		STRCPY(p, (char_u *)",");
	    sz = STRLEN(hl_name_table[i]);
	    if (p - attr_str + sz + 1 < len)
	    {
		STRCPY(p, (char_u *)hl_name_table[i]);
		p += sz;
	    }
	}
    }

    return TRUE;
}

// Temporary buffer used to store the command string produced by hlset().
// IObuff cannot be used for this as the error messages produced by hlset()
// internally use IObuff.
#define	HLSETBUFSZ  512
static char_u hlsetBuf[HLSETBUFSZ + 1];

/*
 * Add the highlight attribute "attr" of length "attrlen" and "value" at
 * "dptr", which points into "hlsetBuf".
 * Returns the updated pointer.
 */
    static char_u *
add_attr_and_value(char_u *dptr, char_u *attr, int attrlen, char_u *value)
{
    size_t	vallen;

    // Do nothing if the value is not specified or is empty
    if (value == NULL || *value == NUL)
	return dptr;

    vallen = STRLEN(value);
    if (dptr + attrlen + vallen + 1 < hlsetBuf + HLSETBUFSZ)
    {
	STRCPY(dptr, attr);
	dptr += attrlen;
	STRCPY(dptr, value);
	dptr += vallen;
    }

    return dptr;
}

/*
 * Add or update a highlight group using 'dict' items. Returns TRUE if
 * successfully updated the highlight group.
 */
    static int
hlg_add_or_update(dict_T *dict)
{
    char_u	*name;
    int		error;
    char_u	term_attr[MAX_ATTR_LEN];
    char_u	cterm_attr[MAX_ATTR_LEN];
    char_u	gui_attr[MAX_ATTR_LEN];
    char_u	*start;
    char_u	*stop;
    char_u	*ctermfg;
    char_u	*ctermbg;
    char_u	*ctermul;
    char_u	*ctermfont;
    char_u	*guifg;
    char_u	*guibg;
    char_u	*guisp;
# ifdef FEAT_GUI
    char_u	*font;
# endif
    int		forceit = FALSE;
    int		dodefault = FALSE;
    int		done = FALSE;
    char_u	*p;

    name = hldict_get_string(dict, (char_u *)"name", &error);
    if (name == NULL || *name == NUL || error)
	return FALSE;

    if (dict_get_bool(dict, "force", VVAL_FALSE) == VVAL_TRUE)
	forceit = TRUE;

    if (dict_get_bool(dict, "default", VVAL_FALSE) == VVAL_TRUE)
	dodefault = TRUE;

    if (dict_has_key(dict, "cleared"))
    {
	varnumber_T	cleared;

	// clear a highlight group
	cleared = dict_get_bool(dict, "cleared", FALSE);
	if (cleared == TRUE)
	{
	    vim_snprintf((char *)hlsetBuf, HLSETBUFSZ, "clear %s", name);
	    do_highlight(hlsetBuf, forceit, FALSE);
	    done = TRUE;
	}
    }

    if (dict_has_key(dict, "linksto"))
    {
	char_u	*linksto;

	// link highlight groups
	linksto = hldict_get_string(dict, (char_u *)"linksto", &error);
	if (linksto == NULL || *linksto == NUL || error)
	    return FALSE;

	vim_snprintf((char *)hlsetBuf, HLSETBUFSZ, "%slink %s %s",
				dodefault ? "default " : "", name, linksto);
	do_highlight(hlsetBuf, forceit, FALSE);

	done = TRUE;
    }

    // If 'cleared' or 'linksto' are specified, then don't process the other
    // attributes.
    if (done)
	return TRUE;

    start = hldict_get_string(dict, (char_u *)"start", &error);
    if (error)
	return FALSE;

    stop = hldict_get_string(dict, (char_u *)"stop", &error);
    if (error)
	return FALSE;

    if (!hldict_attr_to_str(dict, (char_u *)"term", term_attr,
							    sizeof(term_attr)))
	return FALSE;

    if (!hldict_attr_to_str(dict, (char_u *)"cterm", cterm_attr,
							   sizeof(cterm_attr)))
	return FALSE;

    ctermfg = hldict_get_string(dict, (char_u *)"ctermfg", &error);
    if (error)
	return FALSE;

    ctermbg = hldict_get_string(dict, (char_u *)"ctermbg", &error);
    if (error)
	return FALSE;

    ctermul = hldict_get_string(dict, (char_u *)"ctermul", &error);
    if (error)
	return FALSE;

    ctermfont = hldict_get_string(dict, (char_u *)"ctermfont", &error);
    if (error)
	return FALSE;

    if (!hldict_attr_to_str(dict, (char_u *)"gui", gui_attr, sizeof(gui_attr)))
	return FALSE;

    guifg = hldict_get_string(dict, (char_u *)"guifg", &error);
    if (error)
	return FALSE;

    guibg = hldict_get_string(dict, (char_u *)"guibg", &error);
    if (error)
	return FALSE;

    guisp = hldict_get_string(dict, (char_u *)"guisp", &error);
    if (error)
	return FALSE;

# ifdef FEAT_GUI
    font = hldict_get_string(dict, (char_u *)"font", &error);
    if (error)
	return FALSE;
# endif

    // If none of the attributes are specified, then do nothing.
    if (term_attr[0] == NUL && start == NULL && stop == NULL
	    && cterm_attr[0] == NUL && ctermfg == NULL && ctermbg == NULL
	    && ctermul == NULL && ctermfont == NULL && gui_attr[0] == NUL
# ifdef FEAT_GUI
	    && font == NULL
# endif
	    && guifg == NULL && guibg == NULL && guisp == NULL
	    )
	return TRUE;

    hlsetBuf[0] = NUL;
    p = hlsetBuf;
    if (dodefault)
	p = add_attr_and_value(p, (char_u *)"default", 7, (char_u *)" ");
    p = add_attr_and_value(p, (char_u *)"", 0, name);
    p = add_attr_and_value(p, (char_u *)" term=", 6, term_attr);
    p = add_attr_and_value(p, (char_u *)" start=", 7, start);
    p = add_attr_and_value(p, (char_u *)" stop=", 6, stop);
    p = add_attr_and_value(p, (char_u *)" cterm=", 7, cterm_attr);
    p = add_attr_and_value(p, (char_u *)" ctermfg=", 9, ctermfg);
    p = add_attr_and_value(p, (char_u *)" ctermbg=", 9, ctermbg);
    p = add_attr_and_value(p, (char_u *)" ctermul=", 9, ctermul);
    p = add_attr_and_value(p, (char_u *)" ctermfont=", 9, ctermfont);
    p = add_attr_and_value(p, (char_u *)" gui=", 5, gui_attr);
# ifdef FEAT_GUI
    p = add_attr_and_value(p, (char_u *)" font=", 6, font);
# endif
    p = add_attr_and_value(p, (char_u *)" guifg=", 7, guifg);
    p = add_attr_and_value(p, (char_u *)" guibg=", 7, guibg);
    (void)add_attr_and_value(p, (char_u *)" guisp=", 7, guisp);

    do_highlight(hlsetBuf, forceit, FALSE);

    return TRUE;
}

/*
 * "hlset([{highlight_attr}])" function
 * Add or modify highlight groups
 */
    void
f_hlset(typval_T *argvars, typval_T *rettv)
{
    listitem_T	*li;
    dict_T	*dict;

    rettv->vval.v_number = -1;

    if (check_for_list_arg(argvars, 0) == FAIL)
	return;

    FOR_ALL_LIST_ITEMS(argvars->vval.v_list, li)
    {
	if (li->li_tv.v_type != VAR_DICT)
	{
	    emsg(_(e_dictionary_required));
	    return;
	}

	dict = li->li_tv.vval.v_dict;
	if (!hlg_add_or_update(dict))
	    return;
    }

    rettv->vval.v_number = 0;
}
#endif