summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/luatex/luatexko/luatexko.lua
blob: 3d24259379db47e6cf7e7f37363acf7f15511fdf (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
-- luatexko.lua
--
-- Copyright (c) 2013 Dohyun Kim  <nomos at ktug org>
--
-- This work may be distributed and/or modified under the
-- conditions of the LaTeX Project Public License, either version 1.3c
-- of this license or (at your option) any later version.
-- The latest version of this license is in
--   http://www.latex-project.org/lppl.txt
-- and version 1.3c or later is part of all distributions of LaTeX
-- version 2006/05/20 or later.

local err,warn,info,log = luatexbase.provides_module({
  name        = 'luatexko',
  date        = '2013/12/06',
  version     = 1.3,
  description = 'Korean linebreaking and font-switching',
  author      = 'Dohyun Kim',
  license     = 'LPPL v1.3+',
})

luatexko        = luatexko or {}
local luatexko  = luatexko

local dotemphnode,rubynode,ulinebox = {},{},{}
luatexko.dotemphnode        = dotemphnode
luatexko.rubynode           = rubynode
luatexko.ulinebox           = ulinebox
luatexko.hanjafontforhanja  = luatexko.hanjafontforhanja or false

local stringbyte    = string.byte
local stringgsub    = string.gsub
local stringchar    = string.char
local stringfind    = string.find
local stringmatch   = string.match
local stringgmatch  = string.gmatch
local stringformat  = string.format
local string_sub    = string.sub
local mathfloor     = math.floor
local tex_round     = tex.round
local tex_sp        = tex.sp
local fontdefine    = font.define
local utf8char      = unicode.utf8.char

local fontdata = fonts.hashes.identifiers

local remove_node     = node.remove
local insert_before   = node.insert_before
local insert_after    = node.insert_after
local copy_node       = node.copy
local traverse_id     = node.traverse_id
local traverse        = node.traverse
local has_attribute   = node.has_attribute
local unset_attribute = node.unset_attribute
local set_attribute   = node.set_attribute
local nodecount       = node.count
local nodeslide       = node.slide
local nodedimensions  = node.dimensions
local nodetail        = node.tail

local finemathattr      = luatexbase.attributes.finemathattr
local cjtypesetattr     = luatexbase.attributes.cjtypesetattr
local dotemphattr       = luatexbase.attributes.dotemphattr
local autojosaattr      = luatexbase.attributes.autojosaattr
local luakorubyattr     = luatexbase.attributes.luakorubyattr
local hangfntattr       = luatexbase.attributes.hangfntattr
local hanjfntattr       = luatexbase.attributes.hanjfntattr
local fallbackfntattr   = luatexbase.attributes.fallbackfntattr
local hangulpunctsattr  = luatexbase.attributes.hangulpunctsattr
local luakoglueattr     = luatexbase.new_attribute("luakoglueattr")
local luakounicodeattr  = luatexbase.new_attribute("luakounicodeattr")

local add_to_callback = luatexbase.add_to_callback

local gluenode        = node.id("glue")
local gluespecnode    = node.id("glue_spec")
local glyphnode       = node.id("glyph")
local mathnode        = node.id("math")
local hlistnode       = node.id("hlist")
local vlistnode       = node.id("vlist")
local kernnode        = node.id("kern")
local penaltynode     = node.id("penalty")
local rulenode        = node.id("rule")
local whatsitnode     = node.id("whatsit")
local whatsitspecial  = node.subtype("special")

local new_glue      = node.new(gluenode)
local new_glue_spec = node.new(gluespecnode)
local new_penalty   = node.new(penaltynode)
local new_kern      = node.new(kernnode,1)
local new_rule      = node.new(rulenode)

local emsize = 655360

local cjkclass = {
  [0x2018] = 1, -- ‘
  [0x201C] = 1, -- “
  [0xFF08] = 1, -- (
  [0xFE35] = 1, -- ( vert
  [0x3014] = 1, -- 〔
  [0xFE39] = 1, -- 〔 vert
  [0xFF3B] = 1, -- [
  [0xFE47] = 1, -- [ vert
  [0xFF5B] = 1, -- {
  [0xFE37] = 1, -- { vert
  [0x3008] = 1, -- 〈
  [0xFE3F] = 1, -- 〈 vert
  [0x300A] = 1, -- 《
  [0xFE3D] = 1, -- 《 vert
  [0x300C] = 1, -- 「
  [0xFE41] = 1, -- 「 vert
  [0x300E] = 1, -- 『
  [0xFE43] = 1, -- 『 vert
  [0x3010] = 1, -- 【
  [0xFE3B] = 1, -- 【 vert
  [0x3001] = 2, -- 、
  [0xFE11] = 2, -- 、 vert
  [0xFF0C] = 2, -- ,
  [0xFE10] = 2, -- , vert
  [0x2019] = 2, -- ’
  [0x201D] = 2, -- ”
  [0xFF09] = 2, -- )
  [0xFE36] = 2, -- ) vert
  [0x3015] = 2, -- 〕
  [0xFE3A] = 2, -- 〕 vert
  [0xFF3D] = 2, -- ]
  [0xFE48] = 2, -- ] vert
  [0xFF5D] = 2, -- }
  [0xFE38] = 2, -- } vert
  [0x3009] = 2, -- 〉
  [0xFE40] = 2, -- 〉 vert
  [0x300B] = 2, -- 》
  [0xFE3E] = 2, -- 》 vert
  [0x300D] = 2, -- 」
  [0xFE42] = 2, -- 」 vert
  [0x300F] = 2, -- 』
  [0xFE44] = 2, -- 』 vert
  [0x3011] = 2, -- 】
  [0xFE3C] = 2, -- 】 vert
  [0x00B7] = 3, -- ·
  [0x30FB] = 3, -- ・
  [0xFF1A] = 3, -- :
  [0xFE13] = 3, -- : vert
  [0xFF1B] = 3, -- ;
  [0xFE14] = 3, -- ; vert
  [0x3002] = 4, -- 。
  [0xFE12] = 4, -- 。 vert
  [0xFF0E] = 4, -- .
  [0x2015] = 5, --  ―
  [0x2026] = 5, -- …
  [0xFE19] = 5, -- … vert
  [0x2025] = 5, -- ‥
  [0xFE30] = 5, -- ‥ vert
  [0xFF1F] = 6, -- ?
  [0xFF01] = 6, -- !
}

local inhibitxspcode = {
  [0x002D] = 0, -- - hyphen minus
  [0x003C] = 0, -- <
  [0x003E] = 1, -- >
  [0x00B0] = 1,
  [0x2015] = 0,
  [0x2018] = 2,
  [0x2019] = 1,
  [0x201C] = 2,
  [0x201D] = 1,
  [0x2026] = 0,
  [0xFE19] = 0,
  [0x2032] = 1,
  [0x2033] = 1,
  [0x3001] = 1,
  [0xFE11] = 1,
  [0x3002] = 1,
  [0xFE12] = 1,
  [0x3008] = 2,
  [0xFE3F] = 2,
  [0x3009] = 1,
  [0xFE40] = 1,
  [0x300A] = 2,
  [0xFE3D] = 2,
  [0x300B] = 1,
  [0xFE3E] = 1,
  [0x300C] = 2,
  [0xFE41] = 2,
  [0x300D] = 1,
  [0xFE42] = 1,
  [0x300E] = 2,
  [0xFE43] = 2,
  [0x300F] = 1,
  [0xFE44] = 1,
  [0x3010] = 2,
  [0xFE3B] = 2,
  [0x3011] = 1,
  [0xFE3C] = 1,
  [0x3012] = 2, -- 〒
  [0x3014] = 2,
  [0xFE39] = 2,
  [0x3015] = 1,
  [0xFE3A] = 1,
  [0x301C] = 0,
  [0xFF08] = 2,
  [0xFE35] = 2,
  [0xFF09] = 1,
  [0xFE36] = 1,
  [0xFF0C] = 1,
  [0xFE10] = 1,
  [0xFF0E] = 1,
  [0xFF1B] = 1,
  [0xFE14] = 1,
  [0xFF1F] = 1,
  [0xFF3B] = 2,
  [0xFE47] = 2,
  [0xFF3D] = 1,
  [0xFE48] = 1,
  [0xFF5B] = 2,
  [0xFE37] = 2,
  [0xFF5D] = 1,
  [0xFE38] = 1,
  [0xFFE5] = 0,
}

local postbreakpenalty = {
  [0x0023] = 500,
  [0x0024] = 500,
  [0x0025] = 500,
  [0x0026] = 500,
  [0x0028] = 10000,
  [0x003C] = 10000, -- <
  [0x005B] = 10000,
  [0x0060] = 10000,
  [0x2013] = 50, -- en-dash
  [0x2014] = 50, -- em-dash
  [0x2018] = 10000,
  [0x201C] = 10000,
  [0x3008] = 10000,
  [0xFE3F] = 10000,
  [0x300A] = 10000,
  [0xFE3D] = 10000,
  [0x300C] = 10000,
  [0xFE41] = 10000,
  [0x300E] = 10000,
  [0xFE43] = 10000,
  [0x3010] = 10000,
  [0xFE3B] = 10000,
  [0x3014] = 10000,
  [0xFE39] = 10000,
  [0xFF03] = 200,
  [0xFF04] = 200,
  [0xFF05] = 200,
  [0xFF06] = 200,
  [0xFF08] = 10000,
  [0xFE35] = 10000,
  [0xFF3B] = 10000,
  [0xFE47] = 10000,
  [0xFF40] = 10000,
  [0xFF5B] = 10000,
  [0xFE37] = 10000,
}

local prebreakpenalty = {
  [0x0021] = 10000,
  [0x0022] = 10000,
  [0x0027] = 10000,
  [0x0029] = 10000,
  [0x002A] = 500,
  [0x002B] = 500,
  [0x002C] = 10000,
  [0x002D] = 10000,
  [0x002E] = 10000,
  [0x002F] = 500,
  [0x003A] = 10000,
  [0x003B] = 10000,
  [0x003E] = 10000, -- >
  [0x003F] = 10000,
  [0x005D] = 10000,
  [0x00B4] = 10000,
  [0x00B7] = 10000, -- ·
  [0x2013] = 10000, -- –
  [0x2014] = 10000, -- —
  [0x2015] = 10000,
  [0x2019] = 10000,
  [0x201D] = 10000,
  [0x2025] = 250,
  [0xFE30] = 250,
  [0x2026] = 250,
  [0xFE19] = 250,
  [0x2212] = 200,
  [0x3001] = 10000,
  [0xFE11] = 10000,
  [0x3002] = 10000,
  [0xFE12] = 10000,
  [0x3005] = 10000,
  [0x3009] = 10000,
  [0xFE40] = 10000,
  [0x300B] = 10000,
  [0xFE3E] = 10000,
  [0x300D] = 10000,
  [0xFE42] = 10000,
  [0x300F] = 10000,
  [0xFE44] = 10000,
  [0x3011] = 10000,
  [0xFE3C] = 10000,
  [0x3015] = 10000,
  [0xFE3A] = 10000,
  [0x3041] = 150,
  [0x3043] = 150,
  [0x3045] = 150,
  [0x3047] = 150,
  [0x3049] = 150,
  [0x3063] = 150,
  [0x3083] = 150,
  [0x3085] = 150,
  [0x3087] = 150,
  [0x308E] = 150,
  [0x309B] = 10000,
  [0x309C] = 10000,
  [0x30A1] = 150,
  [0x30A3] = 150,
  [0x30A5] = 150,
  [0x30A7] = 150,
  [0x30A9] = 150,
  [0x30C3] = 150,
  [0x30E3] = 150,
  [0x30E5] = 150,
  [0x30E7] = 150,
  [0x30EE] = 150,
  [0x30F5] = 150,
  [0x30F6] = 150,
  [0x30FB] = 10000,
  [0x30FC] = 10000,
  [0xFF01] = 10000,
  [0xFF09] = 10000,
  [0xFE36] = 10000,
  [0xFF0B] = 200,
  [0xFF0C] = 10000,
  [0xFE10] = 10000,
  [0xFF0E] = 10000,
  [0xFF1A] = 10000,
  [0xFE13] = 10000,
  [0xFF1B] = 10000,
  [0xFE14] = 10000,
  [0xFF1D] = 200,
  [0xFF1F] = 10000,
  [0xFF3D] = 10000,
  [0xFE48] = 10000,
  [0xFF5D] = 10000,
  [0xFE38] = 10000,
}

local xspcode = {
  [0x0027] = 2,
  [0x0028] = 1,
  [0x0029] = 2,
  [0x002C] = 2,
  [0x002E] = 2,
  [0x003B] = 2,
  [0x005B] = 1,
  [0x005D] = 2,
  [0x0060] = 1,
}

local cjk_glue_spec = { [0] =
--     한자      (         )         ·         .         —         ?         한글      초성      중종성    latin
{[0] = nil,      {.5,.5},  nil,      {.25,.25},nil,      nil,      nil,      nil,      nil,      nil,      nil,      }, --한자
{[0] = nil,      nil,      nil,      {.25,.25},nil,      nil,      nil,      nil,      nil,      nil,      nil,      }, -- (
{[0] = {.5,.5},  {.5,.5},  nil,      {.25,.25},nil,      {.5,.5},  {.5,.5},  {.25,.25},{.25,.25},{.25,.25},{.5,.5},  }, -- )
{[0] = {.25,.25},{.25,.25},{.25,.25},{.5,.25}, {.25,.25},{.25,.25},{.25,.25},{.25,.25},{.25,.25},{.25,.25},{.25,.25},}, -- ·
{[0] = {.5,0},   {.5,0},   nil,      {.75,.25},nil,      {.5,0},   {.5,0},   {.5,0},   {.5,0},   {.5,0},   {.5,0},   }, -- .
{[0] = nil,      {.5,.5},  nil,      {.25,.25},nil,      nil,      nil,      nil,      nil,      nil,      nil,      }, -- —
{[0] = {.5,.5},  {.5,.5},  nil,      {.25,.25},nil,      nil,      nil,      {.5,.5},  {.5,.5},  {.5,.5},  {.5,.5},  }, -- ?
--
{[0] = nil,      {.25,.25},nil,      {.25,.25},nil,      nil,      nil,      nil,      nil,      nil,      nil,      }, --한글
{[0] = nil,      {.25,.25},nil,      {.25,.25},nil,      nil,      nil,      nil,      nil,      nil,      nil,      }, --초성
{[0] = nil,      {.25,.25},nil,      {.25,.25},nil,      nil,      nil,      nil,      nil,      nil,      nil,      }, --중종성
{[0] = nil,      {.5,.5},  nil,      {.25,.25},nil,      nil,      nil,      nil,      nil,      nil,      nil,      }, --latin
}

local latin_fullstop = {
  [0x2e] = 1, -- .
  --  [0x21] = 2, -- !
  --  [0x2c] = 2, -- ,
  --  [0x3f] = 2, -- ?
  --  [0x2026] = 1, -- \ldots
}

local hangulpunctuations = luatexko.hangulpunctuations or {
  [0x21] = true, -- !
  [0x27] = true, -- '
  [0x28] = true, -- (
  [0x29] = true, -- )
  [0x2C] = true, -- ,
  -- [0x2D] = true, -- -
  [0x2E] = true, -- .
  [0x3A] = true, -- :
  [0x3B] = true, -- ;
  [0x3C] = true, -- <
  [0x3E] = true, -- >
  [0x3F] = true, -- ?
  [0x5B] = true, -- [
  [0x5D] = true, -- ]
  [0x60] = true, -- `
  [0x7B] = true, -- {
  [0x7D] = true, -- }
  [0xB7] = true, -- periodcentered
  -- [0x2014] = true, -- emdash
  -- [0x2015] = true, -- horizontal bar
  [0x2018] = true, -- quoteleft
  [0x2019] = true, -- quoteright
  [0x201C] = true, -- quotedblleft
  [0x201D] = true, -- quotedblright
  [0x2026] = true, -- ellipsis
  [0x203B] = true, -- ※
}
luatexko.hangulpunctuations = hangulpunctuations

local josa_list = {
  --          리을,   중성,   종성
  [0xAC00] = {0xC774, 0xAC00, 0xC774}, -- 가 = 이, 가, 이
  [0xC740] = {0xC740, 0xB294, 0xC740}, -- 은 = 은, 는, 은
  [0xC744] = {0xC744, 0xB97C, 0xC744}, -- 을 = 을, 를, 을
  [0xC640] = {0xACFC, 0xC640, 0xACFC}, -- 와 = 과, 와, 과
  [0xC73C] = {-1,     -1,     0xC73C}, -- 으(로) =   ,  , 으
  [0xC774] = {0xC774, -1,     0xC774}, -- 이(라) = 이,  , 이
}

local josa_code = {
  [0x30]    = 3, -- 0
  [0x31]    = 1, -- 1
  [0x33]    = 3, -- 3
  [0x36]    = 3, -- 6
  [0x37]    = 1, -- 7
  [0x38]    = 1, -- 8
  [0x4C]    = 1, -- L
  [0x4D]    = 3, -- M
  [0x4E]    = 3, -- N
  [0x6C]    = 1, -- l
  [0x6D]    = 3, -- m
  [0x6E]    = 3, -- n
  [0xFB02]  = 1, -- fl
  [0xFB04]  = 1, -- ffl
  ng        = 3,
  ap        = 3,
  up        = 3,
  at        = 3,
  et        = 3,
  it        = 3,
  ot        = 3,
  ut        = 3,
  ok        = 3,
  ic        = 3,
  le        = 1,
  ime       = 3,
  ine       = 3,
  ack       = 3,
  ick       = 3,
  oat       = 2,
  TEX       = 3,
  -- else 2
}

local function get_gluenode (w,st,sh)
  local g = copy_node(new_glue)
  local s = copy_node(new_glue_spec)
  s.width, s.stretch, s.shrink = w or 0, st or 0, sh or 0
  g.spec = s
  return g
end

local function get_penaltynode (n)
  local p = copy_node(new_penalty)
  p.penalty = n or 0
  return p
end

local function get_kernnode (n)
  local k = copy_node(new_kern)
  k.kern = n or 0
  return k
end

local function get_rulenode (w,h,d)
  local r = copy_node(new_rule)
  r.width, r.height, r.depth = w or 0, h or 0, d or 0
  return r
end

local function make_luako_glue(...)
  local glue = get_gluenode(...)
  set_attribute(glue,luakoglueattr,1)
  return glue
end

local function is_cjk_k (c)
  return (c >= 0x2E80  and c <= 0x9FFF )
  or (c >= 0xF900  and c <= 0xFAFF )
  or (c >= 0xFE10  and c <= 0xFE1F )
  or (c >= 0xFE30  and c <= 0xFE4F )
  or (c >= 0xFF00  and c <= 0xFFEF )
  or (c >= 0x20000 and c <= 0x2A6DF)
  or (c >= 0x2F800 and c <= 0x2FA1F)
  or  c == 0x00B0  or  c == 0x2015
  --  or  c == 0x2018  or  c == 0x2019
  --  or  c == 0x201C  or  c == 0x201D
  or  c == 0x2026  or  c == 0x2032
  or  c == 0x2033
end

local function is_hanja (c)
  return (c >= 0x3400 and c <= 0x9FFF )
  or (c >= 0xF900 and c <= 0xFAFF )
  or (c >= 0x20000 and c <= 0x2A6DF)
  or (c >= 0x2F800 and c <= 0x2FA1F)
end

local function is_hangul (c)
  return (c >= 0xAC00 and c <= 0xD7A3)
end

local function is_chosong (c)
  return (c >= 0x1100 and c <= 0x115F)
  or (c >= 0xA960 and c <= 0xA97C)
end

local function is_jungjongsong (c)
  return (c >= 0x1160 and c <= 0x11FF)
  or (c >= 0xD7B0 and c <= 0xD7Fb)
  or c == 0x302E  or  c == 0x302F -- tone marks
end

local function get_cjk_class (ch, cjtype)
  if ch then
    if is_hangul(ch) then return 7 end        -- hangul = 7
    if is_chosong(ch) then return 8 end       -- jamo LC = 8
    if is_jungjongsong(ch) then return 9 end  -- jamo VL, TC, TM = 9
    local c = is_cjk_k(ch) and 0 or 10        -- hanja = 0; latin = 10
    if cjkclass[ch] then c = cjkclass[ch] end -- cjkclass 1 .. 6
    if cjtype then
      if cjtype == 2 and
        (ch == 0xFF1F or ch == 0xFF01 or ch == 0xFF1A or ch == 0xFF1B) then
        c = 4 -- simplified chinese ? !
      end
    else
      if ch == 0x2018 or ch == 0x2019 or ch == 0x201C or ch == 0x201D then
        c = 10 -- korean “ ” ‘ ’
      end
    end
    return c
  end
  return nil
end

local function get_font_table (fid)
  if fid then
    if fontdata[fid] then
      return fontdata[fid]
    else
      return font.fonts[fid]
    end
  end
end

local function get_font_char (fid, chr)
  local f = get_font_table(fid)
  return chr and f and f.characters and f.characters[chr]
end

local function get_font_emsize(fid)
  local f = get_font_table(fid)
  return (f and f.parameters and f.parameters.quad) or emsize
end

local function get_font_feature (fid, name)
  local f = get_font_table(fid)
  return f and f.shared and f.shared.features and f.shared.features[name]
end

local function get_char_boundingbox(fid, chr)
  local f = get_font_table(fid)
  local glbox = f and f.shared
  glbox = glbox and glbox.rawdata
  glbox = glbox and glbox.descriptions
  glbox = glbox and glbox[chr] and glbox[chr].boundingbox
  if glbox then
    local factor, bbox = f.parameters and f.parameters.factor or 655.36, {}
    for i,v in ipairs(glbox) do
      bbox[i] = v * factor
    end
    return bbox
  end
end

local function get_unicode_char(curr)
  local uni = curr.char
  if (uni > 0 and uni < 0xE000) or (uni > 0xF8FF and uni < 0xF0000) then
    return uni -- no pua
  end
  -- tounicode is now reliable. backend is fixed
  uni = get_font_char(curr.font, curr.char)
  uni = uni and uni.tounicode
  uni = uni and string_sub(uni,1,4) -- seems ok for old hangul
  if uni then return tonumber(uni,16) end
  uni = has_attribute(curr, luakounicodeattr)
  if uni then return uni end
  return curr.char
end

local function get_hlist_class_first (hlist)
  local curr = hlist.head
  while curr do
    if curr.id == glyphnode then
      local c,f = get_unicode_char(curr), curr.font
      if c then return c,f end
    elseif curr.id == hlistnode or curr.id == vlistnode then
      local c,f = get_hlist_class_first(curr)
      if c then return c,f end
    elseif curr.id == gluenode then
      if curr.spec and curr.spec.width ~= 0 then return end
    end
    curr = curr.next
  end
end

local function get_hlist_class_last (hlist,prevchar,prevfont)
  local curr = nodeslide(hlist.head)
  while curr do
    if curr.id == glyphnode then
      local c,f = get_unicode_char(curr), curr.font
      if c then return c,f end
    elseif curr.id == hlistnode or curr.id == vlistnode then
      local c,f = get_hlist_class_last(curr)
      if c then return c,f end
    elseif curr.id == gluenode then
      if curr.spec and curr.spec.width ~= 0 then return end
    end
    curr = curr.prev
  end
  return prevchar, prevfont
end

----------------------------
-- cjk linebreak and spacing
----------------------------
local function kanjiskip (head,curr)
  insert_before(head,curr,make_luako_glue(0, emsize*0.1, emsize*0.02))
end

local function xkanjiskip (head,curr)
  if has_attribute(curr,finemathattr) == 0 then -- ttfamily
    kanjiskip(head,curr)
  else
    insert_before(head,curr,make_luako_glue(0.25*emsize, emsize*0.15, emsize*0.06))
  end
end

local function interhangulskip (head,curr,currfont,prevfont,was_penalty)
  local width = 0
  local interhangul = get_font_feature(currfont, "interhangul")
  if interhangul and currfont == prevfont then
    width = tex_sp(interhangul)
  end
  if not was_penalty then
    insert_before(head,curr,get_penaltynode(50))
  end
  insert_before(head,curr,make_luako_glue(width, emsize*0.04, emsize*0.02))
end

local function interhanjaskip (head,curr,was_penalty)
  if not was_penalty then
    insert_before(head,curr,get_penaltynode(50))
  end
  insert_before(head,curr,make_luako_glue(0, emsize*0.04, emsize*0.02))
end

local function koreanlatinskip (head,curr,currfont,prevfont,was_penalty)
  local width = 0 -- default: 0em
  if has_attribute(curr,finemathattr) == 1 then -- not ttfamily
    local latincjk = get_font_feature(currfont, "interlatincjk")
    if not latincjk then
      latincjk = get_font_feature(prevfont, "interlatincjk")
    end
    if latincjk then
      width = tex_sp(latincjk)
    end
  end
  if not was_penalty then
    insert_before(head,curr,get_penaltynode(50))
  end
  insert_before(head,curr,make_luako_glue(width, emsize*0.04, emsize*0.02))
end

local function cjk_insert_nodes(head,curr,currchar,currfont,prevchar,prevfont)
  local was_penalty = false
  local currentcjtype = has_attribute(curr,cjtypesetattr)
  local p = get_cjk_class(prevchar, currentcjtype)
  local c = get_cjk_class(currchar, currentcjtype)
  ---[[raise latin puncts
  if curr.id == glyphnode and has_attribute(curr,finemathattr) == 1 and c < 10 then -- not ttfamily
    local nn, raise = curr.next, nil
    while nn do
      if nn.id == glyphnode and latin_fullstop[nn.char] then
        if not raise then
          raise = get_font_feature(currfont, "punctraise")
          raise = raise and tex_sp(raise)
        end
        if raise then
          nn.yoffset = nn.yoffset or 0
          nn.yoffset = nn.yoffset + raise
        end
        nn = nn.next
      elseif nn.id == kernnode then
        nn = nn.next
      else
        break
      end
    end
  end
  --raise latin puncts]]
  if prebreakpenalty[currchar] then
    was_penalty = true
    insert_before(head,curr,get_penaltynode(prebreakpenalty[currchar]))
  elseif postbreakpenalty[prevchar] then
    was_penalty = true
    insert_before(head,curr,get_penaltynode(postbreakpenalty[prevchar]))
  end
  ---[[ kern is a breakpoint if followed by a glue: protrusion and compress_fullwidth_punctuations
  if (c and c == 1) or (p and p >= 2 and p <= 6) then was_penalty = true end
  --]]
  if p and c then
    if currentcjtype then
      if cjk_glue_spec[p] and cjk_glue_spec[p][c] then
        local width   = emsize * cjk_glue_spec[p][c][1]
        local stretch = 0
        local shrink  = emsize * cjk_glue_spec[p][c][2]
        insert_before(head,curr,make_luako_glue(width, stretch, shrink))
      elseif p < 10 and c < 9 then -- break between chosong and chosong
        kanjiskip(head,curr)
      elseif (p < 10 and c == 10) or (p == 10 and c < 10) then
        if xspcode[currchar] then
          if xspcode[currchar] % 2 == 1 then
            xkanjiskip(head,curr)
          end
        elseif xspcode[prevchar] then
          if xspcode[prevchar] > 1 then
            xkanjiskip(head,curr)
          end
        elseif inhibitxspcode[currchar] then -- 3, 2
          if inhibitxspcode[currchar] > 1 then
            xkanjiskip(head,curr)
          end
        elseif inhibitxspcode[prevchar] then -- 3, 1
          if inhibitxspcode[prevchar] % 2 == 1 then
            xkanjiskip(head,curr)
          end
        else
          xkanjiskip(head,curr)
        end
      end
    else
      if (p < 10 and c == 10) or (p == 10 and c < 10) then
        if xspcode[currchar] then
          if xspcode[currchar] % 2 == 1 then
            koreanlatinskip(head,curr,currfont,prevfont,was_penalty)
          end
        elseif xspcode[prevchar] then
          if xspcode[prevchar] > 1 then
            koreanlatinskip(head,curr,currfont,prevfont,was_penalty)
          end
        elseif inhibitxspcode[currchar] then -- 3, 2
          if inhibitxspcode[currchar] > 1 then
            koreanlatinskip(head,curr,currfont,prevfont,was_penalty)
          end
        elseif inhibitxspcode[prevchar] then -- 3, 1
          if inhibitxspcode[prevchar] % 2 == 1 then
            koreanlatinskip(head,curr,currfont,prevfont,was_penalty)
          end
        else
          koreanlatinskip(head,curr,currfont,prevfont,was_penalty)
        end
      elseif cjk_glue_spec[p] and cjk_glue_spec[p][c] then
        koreanlatinskip(head,curr,currfont,prevfont,was_penalty)
      elseif p == 7 and c == 7 then
        interhangulskip(head,curr,currfont,prevfont,was_penalty)
      elseif p < 10 and c < 9 then -- break between chosong and chosong
        interhanjaskip(head,curr,was_penalty)
      end
    end
  end
  return currchar,currfont
end

local function cjk_spacing_linebreak (head)
  local prevchar,prevfont = nil,nil
  for curr in traverse(head) do
    if has_attribute(curr,finemathattr) then
      if curr.id == gluenode then
        prevchar,prevfont = nil,nil
        unset_attribute(curr,finemathattr)
      elseif curr.id == glyphnode then
        emsize = get_font_emsize(curr.font)
        local uni = get_unicode_char(curr)
        if uni then
          prevchar,prevfont = cjk_insert_nodes(head,curr,uni,curr.font,prevchar,prevfont)
        end
        unset_attribute(curr,finemathattr)
      elseif curr.id == mathnode then
        local currchar = 0
        if curr.surround and curr.surround > 0 then
          currchar = 0x4E00
        end
        if curr.subtype == 0 then
          cjk_insert_nodes(head,curr,currchar,nil,prevchar,prevfont)
          prevchar,prevfont = nil,nil
        else
          prevchar,prevfont = currchar,nil
        end
        unset_attribute(curr,finemathattr)
      elseif curr.id == hlistnode or curr.id == vlistnode then
        local firstchr, firstfid = get_hlist_class_first(curr)
        if firstchr then
          cjk_insert_nodes(head,curr,firstchr,firstfid,prevchar,prevfont)
        end
        prevchar,prevfont = get_hlist_class_last(curr,prevchar,prevfont)
        unset_attribute(curr,finemathattr)
      end
    else
      prevchar,prevfont = 0,nil -- treat \verb as latin character.
    end
  end
end

------------------------------------
-- remove japanese/chinese spaceskip
------------------------------------
local function remove_cj_spaceskip (head)
  for curr in traverse_id(gluenode,head) do
    local cjattr = has_attribute(curr,cjtypesetattr)
    local prv, nxt = curr.prev, curr.next
    if cjattr and cjattr > 0 and prv and nxt then
      local prevclass, prevchar, prevfont, nextclass
      if prv.id == hlistnode or prv.id == vlistnode then
        prevclass = get_hlist_class_last(prv)
      else
        -- what is this strange kern before \text??
        if prv.id == kernnode and prv.kern == 0 then
          prv = prv.prev
        end
        if prv.id == glyphnode then
          prevclass = get_cjk_class(get_unicode_char(prv), cjattr)
          prevchar, prevfont = prv.char, prv.font
        end
      end
      if nxt.id == glyphnode then
        nextclass = get_cjk_class(get_unicode_char(nxt), cjattr)
      elseif nxt.id == hlistnode or nxt.id == vlistnode then
        nextclass = get_hlist_class_first(nxt)
      end
      if (prevclass and prevclass < 10) or (nextclass and nextclass < 10) then
        local subtype = curr.subtype
        if subtype == 13 then -- do not touch on xspaceskip for now
          remove_node(head,curr)
        else -- before \text?? spaceskip is replaced by glue type 0
          local spec = curr.spec
          local csp = spec and spec.width
          local cst = spec and spec.stretch
          local csh = spec and spec.shrink
          local fp = get_font_table(prevfont)
          fp = fp and fp.parameters
          local sp = fp and fp.space
          local st = fp and fp.space_stretch
          local sh = fp and fp.space_shrink
          sp = sp and tex_round(sp)
          st = st and tex_round(st)
          sh = sh and tex_round(sh)
          if prevchar and prevchar >= 65 and prevchar <= 90 then
            st = st and mathfloor(st*(999/1000))
            sh = sh and mathfloor(sh*(1001/1000))
          end
          if sp == csp and st == cst and sh == csh then
            remove_node(head,curr)
          end
        end
      end
    end
  end
end

----------------------------------
-- compress fullwidth punctuations
----------------------------------
local function compress_fullwidth_punctuations (head)
  for curr in traverse_id(glyphnode,head) do
    local uni = get_unicode_char(curr)
    local class = uni and get_cjk_class(uni, has_attribute(curr, cjtypesetattr))
    local chr = get_font_char(curr.font, curr.char)
    if chr and class and class >= 1 and class <= 4 then
      local width = curr.width or 655360
      emsize = get_font_emsize(curr.font)
      local ensize = emsize/2
      local oneoften = emsize/10
      local bbox = get_char_boundingbox(curr.font, curr.char)
      if not bbox then return head end --
      if class == 2 or class == 4 then
        local wd
        if get_font_feature(curr.font,'vertical') then
          wd = ensize<width and ensize-width or 0
        else
          wd = (bbox[3] < ensize) and ensize-width or bbox[3]-width+oneoften
        end
        if chr.right_protruding then
          -- kern is a breakpoint if followed by a glue
          insert_after(head, curr, get_kernnode(wd))
        else
          insert_after(head, curr, get_rulenode(wd))
        end
      elseif class == 1 then
        local wd
        if get_font_feature(curr.font,'vertical') then
          wd = ensize<width and ensize-width or 0
        else
          wd = (width-bbox[1] < ensize) and ensize-width or -bbox[1]+oneoften
        end
        if chr.left_protruding then
          head = insert_before(head, curr, get_kernnode(wd))
        else
          head = insert_before(head, curr, get_rulenode(wd))
        end
      elseif class == 3 then
        local lwd, rwd
        local quarter, thirdquarter, halfwd = ensize/2, ensize*1.5, width/2
        if get_font_feature(curr.font,'vertical') then
          rwd = quarter<halfwd and quarter-halfwd or 0
          lwd = rwd
        else
          rwd = (bbox[3] < thirdquarter) and quarter-halfwd or bbox[3]-width
          lwd = (width-bbox[1] < thirdquarter) and quarter-halfwd or -bbox[1]
        end
        if chr.left_protruding then
          head = insert_before(head, curr, get_kernnode(lwd))
        else
          head = insert_before(head, curr, get_rulenode(lwd))
        end
        if chr.right_protruding then
          insert_after (head, curr, get_kernnode(rwd))
        else
          insert_after (head, curr, get_rulenode(rwd))
        end
      end
    end
  end
  return head -- should be returned!
end

------------------------------
-- ruby: pre-linebreak routine
------------------------------
local function spread_ruby_box(head,extrawidth)
  for curr in traverse_id(gluenode,head) do
    if curr.spec then
      if has_attribute(curr,luakoglueattr) then
        curr.spec.width = curr.spec.width + extrawidth
      else
        head = insert_before(head,curr,get_kernnode(curr.spec.width+extrawidth))
        head = remove_node(head,curr)
      end
    end
  end
  return head
end

local function spread_ruby_base_box (head)
  for curr in traverse_id(hlistnode,head) do
    local attr = has_attribute(curr,luakorubyattr)
    local rubyoverlap = attr and rubynode[attr][3]
    if attr and not rubyoverlap then
      local ruby = rubynode[attr][1]
      if ruby and ruby.width > curr.width then
        local basehead = curr.head
        local numofglues = nodecount(gluenode,basehead)
        local extrawidth = (ruby.width - curr.width)/(numofglues + 1)
        if numofglues > 0 then
          basehead = spread_ruby_box(basehead,extrawidth)
        end
        local leading  = get_kernnode(extrawidth/2)
        curr.width = ruby.width
        leading.next = basehead
        curr.head = leading
      end
    end
  end
end

local function get_ruby_side_width (basewidth,rubywidth,adjacent)
  local width,margin = (rubywidth-basewidth)/2, 0
  if adjacent then
    if adjacent.id == glyphnode then
      if not is_hanja(get_unicode_char(adjacent)) then
        width = (rubywidth-basewidth-emsize)/2
        if width > 0 then
          margin = emsize/2
        else
          width,margin = 0,(rubywidth-basewidth)/2
        end
      end
    end
  end
  return width,margin
end

local function get_ruby_side_kern (head)
  for curr in traverse_id(hlistnode,head) do
    local attr = has_attribute(curr,luakorubyattr)
    local rubyoverlap = attr and rubynode[attr][3]
    if rubyoverlap then
      local basewidth = curr.width
      local rubywidth = rubynode[attr][1].width
      if curr.width < rubywidth then
        local _,fid = get_hlist_class_first(curr)
        emsize = get_font_emsize(fid)
        local leftwidth,leftmargin = get_ruby_side_width(basewidth,rubywidth,curr.prev)
        if leftwidth > 0 then
          curr.width = curr.width + leftwidth
        end
        if leftmargin > 0 then
          rubynode[attr].leftmargin = leftmargin
        end
        local rightwidth,rightmargin = get_ruby_side_width(basewidth,rubywidth,curr.next)
        if rightwidth > 0 then
          curr.width = curr.width + rightwidth
        end
        if rightmargin > 0 then
          rubynode[attr].rightmargin = rightmargin
        end
        rubynode[attr].rightshift = rightwidth - leftwidth
        local totalspace = leftwidth+rightwidth
        if totalspace > 0 then
          local numofglues = nodecount(gluenode,curr.head)
          local extrawidth = totalspace/(numofglues + 1)
          if numofglues > 0 then
            curr.head = spread_ruby_box(curr.head,extrawidth)
          end
          local leading = get_kernnode(extrawidth*(leftwidth/totalspace))
          leading.next = curr.head
          curr.head = leading
        end
      end
    end
  end
end

local function zero_width_rule_with_dir (head,curr,before)
  local rule = get_rulenode(0)
  rule.dir = curr.dir
  if before then
    head = insert_before(head,curr,rule)
  else
    insert_after(head,curr,rule)
  end
  return head
end

local function no_ruby_at_margin(head)
  for curr in traverse_id(hlistnode,head) do
    local attr = has_attribute(curr,luakorubyattr)
    if attr then
      local margin = rubynode[attr].leftmargin
      if margin then
        head = insert_before(head,curr,get_kernnode(-margin))
        head = zero_width_rule_with_dir(head,curr,true) -- before
        head = insert_before(head,curr,get_kernnode(margin))
      end
      margin = rubynode[attr].rightmargin
      if margin then
        if curr.next then
          if curr.next.id == gluenode then
            insert_after(head,curr,get_kernnode(-margin))
            head = zero_width_rule_with_dir(head,curr)
            insert_after(head,curr,get_kernnode(margin))
          elseif curr.next.id == penaltynode and curr.next.penalty < 10000 then
            insert_after(head,curr.next,get_kernnode(-margin))
            head = zero_width_rule_with_dir(head,curr)
            insert_after(head,curr,get_kernnode(margin))
          end
        end
      end
    end
  end
  return head
end

------------------------------
-- discourage character orphan
------------------------------
local function inject_char_widow_penalty (head,curr,uni,cjattr)
  if uni and prebreakpenalty[uni] ~= 10000 then
    local class = get_cjk_class(uni, cjattr)
    if class and class < 9 then
      local pv =  cjattr and 500 or 5000
      if curr.prev and curr.prev.id == rulenode then
        curr = curr.prev
      end
      if curr.prev and curr.prev.id == gluenode then
        curr = curr.prev
      end
      if curr.prev and curr.prev.id == penaltynode then
        curr = curr.prev
        if curr.penalty < pv then
          curr.penalty = pv
        end
      elseif curr and curr.id == gluenode then
        head, curr = insert_before(head,curr,get_penaltynode(pv))
      end
    end
  end
  return curr
end

local function discourage_char_widow (head,curr)
  while curr do
    if curr == head then return end
    if curr.id == glyphnode then
      emsize = get_font_emsize(curr.font)
      local remwd = node.dimensions(curr)
      if remwd > 2*emsize then return end
      local cjattr = has_attribute(curr,cjtypesetattr)
      local uni = get_unicode_char(curr)
      curr = inject_char_widow_penalty(head,curr,uni,cjattr)
    elseif curr.id == hlistnode and curr.id == vlistnode then
      local remwd = node.dimensions(curr)
      local uni,fid = get_hlist_class_first(curr)
      emsize = get_font_emsize(fid)
      if remwd > 2*emsize then return end
      local cjattr = has_attribute(curr,cjtypesetattr)
      curr = inject_char_widow_penalty(head,curr,uni,cjattr)
    end
    curr = curr.prev
  end
end

---------------------------
-- automatic josa selection
---------------------------
local function syllable2jamo (code)
  local code = code - 0xAC00
  local L = 0x1100 + mathfloor(code / 588)
  local V = 0x1161 + mathfloor((code % 588) / 28)
  local T = 0x11A7 + code % 28
  if T == 0x11A7 then T = nil end
  return L, V, T
end

local function number2josacode (n)
  n = n % 10 + stringbyte("0")
  if josa_code[n] then return josa_code[n] end
  return nil -- 2
end

local function latin2josacode (n)
  n = n + stringbyte("a")
  if josa_code[n] then return josa_code[n] end
  return nil -- 2
end

for c = 0x2160, 0x216B do -- Ⅰ
  josa_code[c] = number2josacode(c - 0x215F)
end
for c = 0x2170, 0x217B do -- ⅰ
  josa_code[c] = number2josacode(c - 0x216F)
end
for c = 0x2460, 0x2473 do -- ①
  josa_code[c] = number2josacode(c - 0x245F)
end
for c = 0x2474, 0x2487 do -- ⑴
  josa_code[c] = number2josacode(c - 0x2473)
end
for c = 0x2488, 0x249B do -- ⒈
  josa_code[c] = number2josacode(c - 0x2487)
end
for c = 0x249C, 0x24B5 do -- ⒜
  josa_code[c] = latin2josacode(c - 0x249C)
end
for c = 0x24B6, 0x24CF do --  Ⓐ
  josa_code[c] = latin2josacode(c - 0x24B6)
end
for c = 0x24D0, 0x24E9 do --  ⓐ
  josa_code[c] = latin2josacode(c - 0x24D0)
end
for c = 0x3131, 0x314E do -- ㄱ
  josa_code[c] = 3
end
josa_code[0x3139] = 1 -- ㄹ
for c = 0x3165, 0x3186 do
  josa_code[c] = 3
end
for c = 0x3200, 0x320D do -- ㈀
  josa_code[c] = 3
end
josa_code[0x3203] = 1 -- ㈃
for c = 0x3260, 0x327F do -- ㉠
  josa_code[c] = 3
end
josa_code[0x3263] = 1 -- ㉣
for c = 0xFF10, 0xFF19 do -- 0
  josa_code[c] = number2josacode(c - 0xFF10)
end
for c = 0xFF21, 0xFF3A do -- A
  josa_code[c] = latin2josacode(c - 0xFF21)
end
for c = 0xFF41, 0xFF5A do -- a
  josa_code[c] = latin2josacode(c - 0xFF41)
end

local function jamo2josacode(code)
  if code and code > 0x11A7 then
    if code == 0x11AF then return 1 end
    return 3
  end
  return 2
end

local function get_hanja_hangul_table (table,file,init)
  local i = 0
  local file = kpse.find_file(file)
  if not file then return table end
  file = io.open(file, "r")
  if not file then return table end
  while true do
    local d = file:read("*number")
    if not d then break end
    table[init + i] = d
    i = i + 1
  end
  file:close()
  return table
end

local hanja2hangul = { }
hanja2hangul = get_hanja_hangul_table(hanja2hangul,"hanja_hangul.tab",0x4E00)
hanja2hangul = get_hanja_hangul_table(hanja2hangul,"hanjaexa_hangul.tab",0x3400)
hanja2hangul = get_hanja_hangul_table(hanja2hangul,"hanjacom_hangul.tab",0xF900)

-- 1 : 리을,  2 : 중성,    3 : 종성
local function get_josacode (prevs)
  local code = prevs[1] -- last char
  if not code then return 2 end
  if is_hangul(code) then -- hangul syllable
    local _, _, T = syllable2jamo(code)
    return jamo2josacode(T)
  end
  if is_jungjongsong(code) then return jamo2josacode(code) end
  if (code >= 0x3400 and code <= 0x9FA5)
    or (code >= 0xF900 and code <= 0xFA2D) then
    local _, _, T = syllable2jamo(hanja2hangul[code])
    return jamo2josacode(T)
  end
  -- latin
  if prevs[1] < 0x80
    and prevs[2] and prevs[2] < 0x80
    and prevs[3] and prevs[3] < 0x80 then
    local liii = stringchar(prevs[3], prevs[2], prevs[1])
    if josa_code[liii] then return josa_code[liii] end
  end
  if prevs[1] < 0x80
    and prevs[2] and prevs[2] < 0x80 then
    local lii = stringchar(prevs[2], prevs[1])
    if josa_code[lii] then return josa_code[lii] end
  end
  if josa_code[code] then return josa_code[code] end
  return 2
end

local function get_josaprevs(curr,josaprev,ignoreparens,halt)
  if type(halt) ~= "number" then halt = 0 end
  while curr do
    if curr.id == glyphnode then
      local chr = get_unicode_char(curr)
      -- ignore chars inside parentheses (KTS workshop 2013.11.09)
      if ignoreparens and chr == 0x29 then -- right parenthesis
        halt = halt + 1
      elseif ignoreparens and chr == 0x28 then -- left parenthesis
        halt = halt - 1
      elseif xspcode[chr]
        or inhibitxspcode[chr]
        or prebreakpenalty[chr]
        or postbreakpenalty[chr]
        or chr == 0x302E  -- tone mark
        or chr == 0x302F then  -- tone mark
        --skip
      elseif halt <= 0 then
        josaprev[#josaprev + 1] = chr
      end
    elseif curr.id == hlistnode or curr.id == vlistnode then
      josaprev = get_josaprevs(nodeslide(curr.head),josaprev,ignoreparens,halt)
    end
    if #josaprev == 3 then break end
    curr = curr.prev
  end
  return josaprev
end

local function korean_autojosa (head)
  for curr in traverse_id(glyphnode,head) do
    if has_attribute(curr,autojosaattr) and has_attribute(curr,finemathattr) then
      local ignoreparens = has_attribute(curr,autojosaattr) > 1 and true or false
      local josaprev = {}
      josaprev = get_josaprevs(curr.prev,josaprev,ignoreparens)
      local josacode = get_josacode(josaprev)
      local thischar = get_unicode_char(curr)
      if thischar == 0xC774 then
        if curr.next
          and curr.next.id == glyphnode
          and get_unicode_char(curr.next) == 0xB77C then
          curr.char = josa_list[0xC774][josacode]
        else
          curr.char = josa_list[0xAC00][josacode]
        end
      elseif thischar and josa_list[thischar] then
        curr.char = josa_list[thischar][josacode]
      end
    end
    if curr.char < 0 then remove_node(head,curr) end
  end
end

------------------------------
-- switch to hangul/hanja font
------------------------------
local function hangulspaceskip (engfont, hfontid, spec)
  local eng = engfont.parameters
  if not eng then return end
  if not spec then return end
  if spec.stretch_order ~= 0 or spec.shrink_order ~= 0 then return end
  local gsp, gst, gsh = spec.width, spec.stretch, spec.shrink
  local esp, est, esh = eng.space, eng.space_stretch, eng.space_shrink
  esp = esp and tex_round(esp)
  est = est and tex_round(est)
  esh = esh and tex_round(esh)
  if esp == gsp and est == gst and esh == gsh then else return end
  local hf = get_font_table(hfontid)
  if not hf then return end
  local hp = hf.parameters
  if not hp then return end
  local hsp,hst,hsh = hp.space,hp.space_stretch,hp.space_shrink
  if hsp and hst and hsh then else return end
  return tex_round(hsp), tex_round(hst), tex_round(hsh)
end

local function font_substitute(head)
  local noinmath = true
  for curr in traverse(head) do
    if curr.id == mathnode then
      if curr.subtype == 0 then
        noinmath = false
      else
        noinmath = true
      end
    elseif noinmath and curr.id == glyphnode then
      local eng = get_font_table(curr.font)
      local engfontchar = nil
      if eng and eng.encodingbytes and eng.encodingbytes == 2 -- exclude type1
        and hangulpunctuations[curr.char]
        and has_attribute(curr, hangulpunctsattr)
        and has_attribute(curr, finemathattr) == 1
        and not get_font_char(curr.font, 0xAC00) then -- exclude hangul font
      else
        engfontchar = get_font_char(curr.font, curr.char)
      end
      if curr.char and not engfontchar then
        local korid  = false
        local hangul = has_attribute(curr, hangfntattr)
        local hanja  = has_attribute(curr, hanjfntattr)
        local fallback = has_attribute(curr,fallbackfntattr)
        local ftable = {hangul, hanja, fallback}
        if luatexko.hanjafontforhanja then
          local uni = get_unicode_char(curr)
          uni = uni and get_cjk_class(uni)
          if uni and uni < 7 then ftable = {hanja, hangul, fallback} end
        end
        for i=1,#ftable do
          local fid = ftable[i]
          if fid then
            local c = get_font_char(fid, curr.char)
            if c then
              korid = true
              curr.font = fid
              -- adjust next glue by hangul font space
              local nxt = curr.next
              if eng
                and nxt and nxt.id == gluenode
                and nxt.subtype and nxt.subtype == 0
                and nxt.spec and nxt.spec.writable
                and get_font_char(fid,32) then
                local sp,st,sh = hangulspaceskip(eng, fid, nxt.spec)
                if sp and st and sh then
                  local hg = copy_node(nxt.spec)
                  hg.width, hg.stretch, hg.shrink = sp, st, sh
                  nxt.spec = hg
                end
              end
              --- charraise option charraise
              local charraise = get_font_feature(fid, "charraise")
              if charraise then
                charraise = tex_sp(charraise)
                curr.yoffset = curr.yoffset and (curr.yoffset + charraise) or charraise
              end
              ---
              break
            end
          end
        end
        if not korid then
          warn("!Missing character: %s U+%04X", utf8char(curr.char),curr.char)
        end
      end
    end
  end
  return head
end

-----------------------------
-- reserve unicode code point
-----------------------------
local function assign_unicode_codevalue (head)
  for curr in traverse_id(glyphnode, head) do
    set_attribute(curr, luakounicodeattr, curr.char)
  end
  return head
end


------------------------------------
-- vertical typesetting: EXPERIMENTAL -- don't use this
------------------------------------
---[[no vwidth in luaotfload v2
local tsbtable = {}

local function read_tsb_table(filename)-- for ttx-generated vmtx table
  if tsbtable[filename] then
    return tsbtable[filename]
  end
  local filepath = kpse.find_file(filename)
  if not filepath then return end
  local file = io.open(filepath, "r")
  if not file then return end
  local tsbtb = {}
  local patt = 'name="(.-)" height="(.-)" tsb="(.-)"'
  while true do
    local l = file:read("*line")
    if not l then break end
    for name, height, tsb in stringgmatch(l,patt) do
      tsbtb[name] = {}
      tsbtb[name].height = height
      tsbtb[name].tsb = tsb
    end
  end
  file:close()
  tsbtable[filename] = tsbtb
  return tsbtb
end

local function cjk_vertical_font (vf)
  if not vf.shared then return end
  if not vf.shared.features then return end
  if not vf.shared.features["vertical"] then return end
  if vf.type == "virtual" then return end

  --- for read-ttx
  local filename = vf.filename
  filename = stringgsub(filename,".*/","")
  filename = stringgsub(filename,"[tToO][tT][fF]$","ttx")
  local tsbtable = read_tsb_table(filename)
  if not tsbtable then
    warn("Cannot read %s. Aborting vertical typesetting.",filename)
    return
  end
  ---

  local tmp = table.copy(vf) -- fastcopy takes time too long.
  local id = fontdefine(tmp)

  local hash = vf.properties and vf.properties.hash and vf.properties.hash..' @ vertical'
  hash = hash or (vf.name and vf.size and vf.name..' @ '..vf.size..' @ vertical')

  vf.properties = vf.properties or {}
  vf.properties.hash = vf.properties.hash or ""
  vf.properties.hash = hash
  vf.type = 'virtual'
  vf.fonts = {{ id = id }}
  local quad = vf.parameters and vf.parameters.quad or 655360
  local descriptions = vf.shared and vf.shared.rawdata and vf.shared.rawdata.descriptions
  local ascender = vf.parameters and vf.parameters.ascender
  local factor = vf.parameters and vf.parameters.factor
  local halfxht = (vf.parameters and vf.parameters.x_height and vf.parameters.x_height/2) or quad/4
  for i,v in pairs(vf.characters) do
    local dsc = descriptions[i]
    local gname = dsc.name
    -- local vw = dsc and dsc.vwidth
    --- for read-ttx
    local vw = tsbtable and tsbtable[gname] and tsbtable[gname].height
    local tsb = tsbtable and tsbtable[gname] and tsbtable[gname].tsb
    if not vw and dsc.index then
      local cid = stringformat("cid%05d", dsc.index)
      vw = tsbtable and tsbtable[cid] and tsbtable[cid].height
      tsb = tsbtable and tsbtable[cid] and tsbtable[cid].tsb
    end
    tsb = tsb and factor and tsb*factor
    ---
    vw = vw and factor and vw * factor
    vw = vw or quad
    local vh = dsc and dsc.boundingbox and dsc.boundingbox[3]
    vh = vh and factor and vh * factor
    vh = vh and vh - quad/2 or quad/2
    vh = vh + halfxht
    vh = vh > 0 and vh or nil
    local vd = dsc and dsc.boundingbox and dsc.boundingbox[1]
    vd = vd and factor and vd * factor
    vd = vd and quad/2 - vd or quad/2
    vd = vd - halfxht
    vd = vd > 0 and vd or nil
    local bb4 = dsc and dsc.boundingbox and dsc.boundingbox[4]
    bb4 = bb4 and factor and bb4*factor
    local asc = bb4 and tsb and bb4 + tsb
    asc = asc or ascender
    v.commands = {
      {'right', asc}, -- bbox4 + top_side_bearing! But, tsb not available!
      {'down', halfxht},
      {'special', 'pdf: q 0 1 -1 0 0 0 cm'},
      {'push'},
      {'char', i},
      {'pop'},
      {'special', 'pdf: Q'},
    }
    v.width = vw
    v.height = vh
    v.depth = vd
  end
  return vf
end

local function activate_vertical_virtual (tfmdata,value)
  local loaded = luatexbase.priority_in_callback("luaotfload.patch_font",
  "luatexko.vertical_virtual_font")
  if value and not loaded then
    add_to_callback("luaotfload.patch_font",
    cjk_vertical_font,
    "luatexko.vertical_virtual_font")
  end
end

local otffeatures = fonts.constructors.newfeatures("otf")
otffeatures.register {
  name         = "vertical",
  description  = "vertical typesetting",
  initializers = {
    node = activate_vertical_virtual,
  }
}
--no vwidth in luaotfload v2]]

local function reorderTM (head)
  for curr in traverse_id(glyphnode, head) do
    if curr.width > 0 then -- old hangul vertical typesetting is broken?
      local uni = get_unicode_char(curr)
      if uni and (uni == 0x302E or uni == 0x302F) then
        local p = curr.prev
        while p do
          if p.id ~= glyphnode then break end
          local pc = get_cjk_class(get_unicode_char(p))
          if pc == 7 or pc == 8 then
            head = insert_before(head,p,copy_node(curr))
            head = remove_node(head,curr)
            break
          end
          p = p.prev
        end
      end
    end
  end
  return head
end

----------------------------------
-- add to callback : pre-linebreak
----------------------------------
add_to_callback('hpack_filter', function(head)
  assign_unicode_codevalue(head)
  korean_autojosa(head)
  remove_cj_spaceskip(head)
  font_substitute(head)
  return head
end, 'luatexko.hpack_filter_first',1)

add_to_callback('hpack_filter', function(head)
  get_ruby_side_kern(head)
  cjk_spacing_linebreak(head)
  spread_ruby_base_box(head)
  head = compress_fullwidth_punctuations(head)
  -- head = no_ruby_at_margin(head)
  head = reorderTM(head)
  return head
end, 'luatexko.hpack_filter')

add_to_callback('pre_linebreak_filter', function(head)
  assign_unicode_codevalue(head)
  korean_autojosa(head)
  remove_cj_spaceskip(head)
  font_substitute(head)
  return head
end, 'luatexko.pre_linebreak_filter_first',1)

add_to_callback('pre_linebreak_filter', function(head)
  get_ruby_side_kern(head)
  cjk_spacing_linebreak(head)
  spread_ruby_base_box(head)
  head = compress_fullwidth_punctuations(head)
  discourage_char_widow(head, nodeslide(head))
  head = no_ruby_at_margin(head)
  head = reorderTM(head)
  return head
end, 'luatexko.pre_linebreak_filter')


--------------------------
-- dot emphasis (드러냄표)
--------------------------
local function after_linebreak_dotemph (head)
  for curr in traverse(head) do
    if curr.id == hlistnode then -- hlist may be nested!!!
      curr.head = after_linebreak_dotemph(curr.head)
    elseif curr.id == glyphnode then
      local attr = has_attribute(curr,dotemphattr)
      if attr and attr > 0 then
        local cc = get_cjk_class(get_unicode_char(curr))
        if cc and (cc == 0 or cc == 7 or cc == 8) then
          local basewd = curr.width or 0
          if cc == 8 then -- check next char for old hangul jung/jongseong
            local nn = curr.next
            while nn do
              if nn.id ~= glyphnode then break end
              local uni = get_unicode_char(nn)
              local nc = get_cjk_class(uni)
              if nc and nc == 9 and uni ~= 0x302E and uni ~= 0x302F then
                basewd = basewd + (nn.width or 0)
              else
                break
              end
              nn = nn.next
            end
          end
          local d = copy_node(dotemphnode[attr])
          local dot = d.head
          d.head = get_kernnode(basewd/2-d.width/2)
          d.head.next = dot
          d.width = 0
          head = insert_before(head,curr,d)
        end
        unset_attribute(curr,dotemphattr)
      end
    end
  end
  return head
end

-------------------------------
-- ruby: post-linebreak routine
-------------------------------
local function after_linebreak_ruby (head)
  for curr in traverse_id(hlistnode,head) do
    after_linebreak_ruby(curr.head) -- hlist may be nested!!!
    local attr = has_attribute(curr,luakorubyattr)
    if attr then
      local ruby = rubynode[attr][1]
      if ruby then
        if ruby.width < curr.width then
          local rubyhead = ruby.head
          local numofglues = nodecount(gluenode,rubyhead)
          local extrawidth = (curr.width - ruby.width)/(numofglues + 1)
          ruby.width = curr.width - extrawidth/2
          if numofglues > 0 then
            ruby.head = spread_ruby_box(rubyhead,extrawidth)
          end
        else
          local right = rubynode[attr].rightshift or 0
          ruby.width = curr.width + (ruby.width-curr.width+right)/2
        end
        ruby.shift = -curr.height-rubynode[attr][2]
        insert_after(head,curr,ruby)
        insert_after(head,curr,get_kernnode(-ruby.width))
      end
      rubynode[attr] = nil
      unset_attribute(curr,luakorubyattr)
    end
  end
end

---------------------
-- underline emphasis
---------------------
local function draw_underline(head,curr,width,ulinenum,ulstart)
  if width and width > 0 then
    local glue   = get_gluenode(width)
    glue.subtype = 101 -- cleaders
    glue.leader  = copy_node(ulinebox[ulinenum])
    insert_before(head, curr, get_kernnode(-width))
    insert_before(head, curr, glue)
  end
  for _,nd in ipairs({ulstart,curr}) do
    if nd.id == whatsitnode
      and nd.subtype == whatsitspecial
      and nd.data
      and stringfind(nd.data,"luako:uline") then
      head = remove_node(head,nd)
    end
  end
  return head
end

local function after_linebreak_underline(head,glueorder,glueset,gluesign,ulinenum)
  local ulstart = ulinenum and head or false
  if ulstart and ulstart.id == gluenode then ulstart = ulstart.next end
  for curr in traverse(head) do
    if curr.id == hlistnode then
      curr.head,ulinenum = after_linebreak_underline(curr.head,curr.glue_order,curr.glue_set,curr.glue_sign,ulinenum)
    elseif curr.id == whatsitnode and curr.subtype == whatsitspecial
      and curr.data then
      if stringfind(curr.data,"luako:ulinebegin=") then
        ulinenum = tonumber(stringmatch(curr.data,"(%d+)"))
        ulstart = curr
      elseif ulstart and ulinenum
        and stringfind(curr.data,'luako:ulineend') then
        local wd = nodedimensions(glueset,gluesign,glueorder,ulstart,curr)
        head = draw_underline(head,curr,wd,ulinenum,ulstart)
        ulinebox[ulinenum] = nil
        ulinenum = nil
      end
    end
    if ulstart and ulinenum and curr == nodetail(head) then
      local wd = nodedimensions(glueset,gluesign,glueorder,ulstart,curr)
      head = draw_underline(head,curr,wd,ulinenum,ulstart)
    end
  end
  return head, ulinenum
end

-----------------------------------
-- add to callback : post-linebreak
-----------------------------------
add_to_callback('vpack_filter', function(head)
  head = after_linebreak_dotemph(head)
  after_linebreak_ruby(head)
  head = after_linebreak_underline(head)
  return head
end, 'luatexko.vpack_filter')

add_to_callback("post_linebreak_filter", function(head)
  head = after_linebreak_dotemph(head)
  after_linebreak_ruby(head)
  head = after_linebreak_underline(head)
  return head
end, 'luatexko.post_linebreak_filter')