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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>History of Ghostscript versions 4.n</title>
<!-- $Id$ -->
<!-- Originally: history4.txt -->
<!--
WARNING: do not use Pete Kaiser's emacs function "gs-toc" alone to
re-create the table of contents here, because it will replace the
hand-edited TOC subheads with a separate subhead for each H2 in
the body of the file. Or if you do, first look at the original
TOC to see how to edit it for visual conciseness.
-->
<link rel="stylesheet" type="text/css" href="gs.css" title="Ghostscript Style">
</head>
<body>
<!-- [1.0 begin visible header] ============================================ -->
<!-- [1.1 begin headline] ================================================== -->
<h1>History of Ghostscript versions 4.n</h1>
<!-- [1.1 end headline] ==================================================== -->
<!-- [1.2 begin table of contents] ========================================= -->
<h2>Table of contents</h2>
<blockquote><ul>
<li><a href="#Version4.81">Version 4.81 (6/1/97)</a>
<ul>
<li><a href="#V4.81_Documentation">Documentation</a>,
<a href="#V4.81_Procedures">Procedures</a>,
<a href="#V4.81_Utilities">Utilities</a>,
<a href="#V4.81_Drivers">Drivers</a>,
<a href="#V4.81_Platforms">Platforms</a>,
<a href="#V4.81_Interpreter">Interpreter</a>,
<a href="#V4.81_Library">Library</a>
</ul>
<li><a href="#Version4.80">Version 4.80 (limited) (5/28/97)</a>
<ul>
<li><a href="#V4.80_Documentation">Documentation</a>,
<a href="#V4.80_Procedures">Procedures</a>,
<a href="#V4.80_Utilities">Utilities</a>,
<a href="#V4.80_Drivers">Drivers</a>,
<a href="#V4.80_Platforms">Platforms</a>,
<a href="#V4.80_Fonts">Fonts</a>,
<a href="#V4.80_Interpreter">Interpreter</a>,
<a href="#V4.80_Streams">Streams</a>,
<a href="#V4.80_Library">Library</a>
</ul>
<li><a href="#Version4.74">Version 4.74 (limited) (5/5/97)</a>
<ul>
<li><a href="#V4.74_Documentation">Documentation</a>,
<a href="#V4.74_Utilities">Utilities</a>,
<a href="#V4.74_Drivers">Drivers</a>,
<a href="#V4.74_Interpreter">Interpreter</a>,
<a href="#V4.74_Streams">Streams</a>,
<a href="#V4.74_Library">Library</a>
</ul>
<li><a href="#Version4.73">Version 4.73 (limited) (4/19/97)</a>
<ul>
<li><a href="#V4.73_Documentation">Documentation</a>,
<a href="#V4.73_Procedures">Procedures</a>,
<a href="#V4.73_Utilities">Utilities</a>,
<a href="#V4.73_Drivers">Drivers</a>,
<a href="#V4.73_Platforms">Platforms</a>,
<a href="#V4.73_Interpreter">Interpreter</a>,
<a href="#V4.73_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.73_Streams">Streams</a>,
<a href="#V4.73_Library">Library</a>
</ul>
<li><a href="#Version4.72">Version 4.72 (limited) (4/14/97)</a>
<ul>
<li><a href="#V4.72_Documentation">Documentation</a>,
<a href="#V4.72_Procedures">Procedures</a>,
<a href="#V4.72_Drivers">Drivers</a>,
<a href="#V4.72_Platforms">Platforms</a>,
<a href="#V4.72_Interpreter">Interpreter</a>,
<a href="#V4.72_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.72_Streams">Streams</a>,
<a href="#V4.72_Library">Library</a>
</ul>
<li><a href="#Version4.71">Version 4.71 (limited) (3/31/97)</a>
<ul>
<li><a href="#V4.71_Documentation">Documentation</a>,
<a href="#V4.71_Procedures">Procedures</a>,
<a href="#V4.71_Drivers">Drivers</a>,
<a href="#V4.71_Interpreter">Interpreter</a>,
<a href="#V4.71_Streams">Streams</a>,
<a href="#V4.71_Library">Library</a>
</ul>
<li><a href="#Version4.70">Version 4.70 (limited) (3/26/97)</a>
<ul>
<li><a href="#V4.70_Documentation">Documentation</a>,
<a href="#V4.70_Procedures">Procedures</a>,
<a href="#V4.70_Drivers">Drivers</a>,
<a href="#V4.70_Platforms">Platforms</a>,
<a href="#V4.70_Interpreter">Interpreter</a>,
<a href="#V4.70_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.70_Streams">Streams</a>,
<a href="#V4.70_Library">Library</a>
</ul>
<li><a href="#Version4.61">Version 4.61 (limited) (3/13/97)</a>
<ul>
<li><a href="#V4.61_Documentation">Documentation</a>,
<a href="#V4.61_Procedures">Procedures</a>,
<a href="#V4.61_Drivers">Drivers</a>,
<a href="#V4.61_Platforms">Platforms</a>,
<a href="#V4.61_Interpreter">Interpreter</a>,
<a href="#V4.61_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.61_Streams">Streams</a>,
<a href="#V4.61_Library">Library</a>
</ul>
<li><a href="#Version4.60">Version 4.60 (limited) (3/2/97)</a>
<ul>
<li><a href="#V4.60_Documentation">Documentation</a>,
<a href="#V4.60_Procedures">Procedures</a>,
<a href="#V4.60_Drivers">Drivers</a>,
<a href="#V4.60_Platforms">Platforms</a>,
<a href="#V4.60_Fonts">Fonts</a>,
<a href="#V4.60_Interpreter">Interpreter</a>,
<a href="#V4.60_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.60_Streams">Streams</a>,
<a href="#V4.60_Library">Library</a>
</ul>
<li><a href="#Version4.51">Version 4.51 (limited) (2/9/97)</a>
<ul>
<li><a href="#V4.51_Procedures">Procedures</a>,
<a href="#V4.51_Drivers">Drivers</a>,
<a href="#V4.51_Platforms">Platforms</a>,
<a href="#V4.51_Interpreter">Interpreter</a>,
<a href="#V4.51_Streams">Streams</a>,
<a href="#V4.51_Library">Library</a>
</ul>
<li><a href="#Version4.50">Version 4.50 (limited) (1/31/97)</a>
<ul>
<li><a href="#V4.50_Documentation">Documentation</a>,
<a href="#V4.50_Procedures">Procedures</a>,
<a href="#V4.50_Drivers">Drivers</a>,
<a href="#V4.50_Platforms">Platforms</a>,
<a href="#V4.50_Interpreter">Interpreter</a>,
<a href="#V4.50_Streams">Streams</a>,
<a href="#V4.50_Library">Library</a>
</ul>
<li><a href="#Version4.41">Version 4.41 (private) (1/21/97)</a>
<ul>
<li><a href="#V4.41_Procedures">Procedures</a>,
<a href="#V4.41_Drivers">Drivers</a>,
<a href="#V4.41_Fonts">Fonts</a>,
<a href="#V4.41_Interpreter">Interpreter</a>,
<a href="#V4.41_Streams">Streams</a>,
<a href="#V4.41_Library">Library</a>
</ul>
<li><a href="#Version4.40">Version 4.40 (private) (1/13/97)</a>
<ul>
<li><a href="#V4.40_Documentation">Documentation</a>,
<a href="#V4.40_Utilities">Utilities</a>,
<a href="#V4.40_Drivers">Drivers</a>,
<a href="#V4.40_Interpreter">Interpreter</a>,
<a href="#V4.40_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.40_Library">Library</a>
</ul>
<li><a href="#Version4.39">Version 4.39 (limited) (1/1/97)</a>
<ul>
<li><a href="#V4.39_Documentation">Documentation</a>,
<a href="#V4.39_Procedures">Procedures</a>,
<a href="#V4.39_Utilities">Utilities</a>,
<a href="#V4.39_Drivers">Drivers</a>,
<a href="#V4.39_Interpreter">Interpreter</a>,
<a href="#V4.39_Streams">Streams</a>,
<a href="#V4.39_Library">Library</a>
</ul>
<li><a href="#Version4.38">Version 4.38 (limited) (12/20/96)</a>
<ul>
<li><a href="#V4.38_Interpreter">Interpreter</a>,
<a href="#V4.38_Streams">Streams</a>,
<a href="#V4.38_Library">Library</a>
</ul>
<li><a href="#Version4.37">Version 4.37 (limited) (12/10/96)</a>
<ul>
<li><a href="#V4.37_Fonts">Fonts</a>,
<a href="#V4.37_Interpreter">Interpreter</a>,
<a href="#V4.37_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.37_Library">Library</a>
</ul>
<li><a href="#Version4.36">Version 4.36 (limited) (12/3/96)</a>
<ul>
<li><a href="#V4.36_Documentation">Documentation</a>,
<a href="#V4.36_Drivers">Drivers</a>,
<a href="#V4.36_Interpreter">Interpreter</a>,
<a href="#V4.36_Library">Library</a>
</ul>
<li><a href="#Version4.35">Version 4.35 (limited) (11/24/96)</a>
<ul>
<li><a href="#V4.35_Documentation">Documentation</a>,
<a href="#V4.35_Procedures">Procedures</a>,
<a href="#V4.35_Interpreter">Interpreter</a>,
<a href="#V4.35_Streams">Streams</a>,
<a href="#V4.35_Library">Library</a>
</ul>
<li><a href="#Version4.34">Version 4.34 (limited) (11/18/96)</a>
<ul>
<li><a href="#V4.34_Documentation">Documentation</a>,
<a href="#V4.34_Procedures">Procedures</a>,
<a href="#V4.34_Drivers">Drivers</a>,
<a href="#V4.34_Interpreter">Interpreter</a>,
<a href="#V4.34_Streams">Streams</a>,
<a href="#V4.34_Library">Library</a>
</ul>
<li><a href="#Version4.33">Version 4.33 (limited) (11/6/96)</a>
<ul>
<li><a href="#V4.33_Documentation">Documentation</a>,
<a href="#V4.33_Procedures">Procedures</a>,
<a href="#V4.33_Interpreter">Interpreter</a>,
<a href="#V4.33_Library">Library</a>
</ul>
<li><a href="#Version4.32">Version 4.32 (limited) (11/1/96)</a>
<ul>
<li><a href="#V4.32_Documentation">Documentation</a>,
<a href="#V4.32_Drivers">Drivers</a>,
<a href="#V4.32_Platforms">Platforms</a>,
<a href="#V4.32_Fonts">Fonts</a>,
<a href="#V4.32_Interpreter">Interpreter</a>,
<a href="#V4.32_Library">Library</a>
</ul>
<li><a href="#Version4.31">Version 4.31 (limited) (10/27/96)</a>
<ul>
<li><a href="#V4.31_Documentation">Documentation</a>,
<a href="#V4.31_Procedures">Procedures</a>,
<a href="#V4.31_Platforms">Platforms</a>,
<a href="#V4.31_Interpreter">Interpreter</a>,
<a href="#V4.31_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.31_Streams">Streams</a>,
<a href="#V4.31_Library">Library</a>
</ul>
<li><a href="#Version4.30">Version 4.30 (limited) (10/23/96)</a>
<ul>
<li><a href="#V4.30_Documentation">Documentation</a>,
<a href="#V4.30_Drivers">Drivers</a>,
<a href="#V4.30_Platforms">Platforms</a>,
<a href="#V4.30_Fonts">Fonts</a>,
<a href="#V4.30_Interpreter">Interpreter</a>,
<a href="#V4.30_Library">Library</a>
</ul>
<li><a href="#Version4.21">Version 4.21 (limited) (10/17/96)</a>
<ul>
<li><a href="#V4.21_Documentation">Documentation</a>,
<a href="#V4.21_Procedures">Procedures</a>,
<a href="#V4.21_Drivers">Drivers</a>,
<a href="#V4.21_Platforms">Platforms</a>,
<a href="#V4.21_Fonts">Fonts</a>,
<a href="#V4.21_Interpreter">Interpreter</a>,
<a href="#V4.21_Library">Library</a>
</ul>
<li><a href="#Version4.20">Version 4.20 (limited) (10/13/96)</a>
<ul>
<li><a href="#V4.20_Documentation">Documentation</a>,
<a href="#V4.20_Procedures">Procedures</a>,
<a href="#V4.20_Utilities">Utilities</a>,
<a href="#V4.20_Drivers">Drivers</a>,
<a href="#V4.20_Interpreter">Interpreter</a>,
<a href="#V4.20_Library">Library</a>
</ul>
<li><a href="#Version4.10">Version 4.10 (limited) (9/25/96)</a>
<ul>
<li><a href="#V4.10_Documentation">Documentation</a>,
<a href="#V4.10_Utilities">Utilities</a>,
<a href="#V4.10_Drivers">Drivers</a>,
<a href="#V4.10_Interpreter">Interpreter</a>,
<a href="#V4.10_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.10_Library">Library</a>
</ul>
<li><a href="#Version4.03">Version 4.03 (9/23/96)</a>
<ul>
<li><a href="#V4.03_Documentation">Documentation</a>,
<a href="#V4.03_Procedures">Procedures</a>,
<a href="#V4.03_Drivers">Drivers</a>,
<a href="#V4.03_Fonts">Fonts</a>,
<a href="#V4.03_Streams">Streams</a>
</ul>
<li><a href="#Version4.02">Version 4.02 (9/19/96)</a>
<ul>
<li><a href="#V4.02_Documentation">Documentation</a>,
<a href="#V4.02_Procedures">Procedures</a>,
<a href="#V4.02_Utilities">Utilities</a>,
<a href="#V4.02_Drivers">Drivers</a>,
<a href="#V4.02_Platforms">Platforms</a>,
<a href="#V4.02_Interpreter">Interpreter</a>,
<a href="#V4.02_Interpreter_PDF">Interpreter (PDF)</a>,
<a href="#V4.02_Streams">Streams</a>,
<a href="#V4.02_Library">Library</a>
</ul>
<li><a href="#Version4.01">Version 4.01 (7/10/96)</a>
<ul>
<li><a href="#V4.01_Documentation">Documentation</a>,
<a href="#V4.01_Procedures">Procedures</a>,
<a href="#V4.01_Utilities">Utilities</a>,
<a href="#V4.01_Platforms">Platforms</a>,
<a href="#V4.01_Platforms">Platforms</a>,
<a href="#V4.01_Interpreter">Interpreter</a>,
<a href="#V4.01_Library">Library</a>
</ul>
<li><a href="#Version4.0">Version 4.0 (6/28/96)</a>
<ul>
<li><a href="#V4.0_Documentation">Documentation</a>,
<a href="#V4.0_Procedures">Procedures</a>,
<a href="#V4.0_Utilities">Utilities</a>,
<a href="#V4.0_Drivers">Drivers</a>,
<a href="#V4.0_Platforms">Platforms</a>,
<a href="#V4.0_Interpreter">Interpreter</a>,
<a href="#V4.0_Streams">Streams</a>,
<a href="#V4.0_Library">Library</a>
</ul>
</ul></blockquote>
<!-- [1.2 end table of contents] =========================================== -->
<!-- [1.3 begin hint] ====================================================== -->
<p>
This document is a history of Ghostscript releases numbered 4.n. For more
recent changes, see the the other history documents and, for the latest
versions, the news:
<blockquote>
<a href="News.htm">News</a><br>
History of Ghostscript versions 4.n (this document)<br>
<a href="History3.htm">History of Ghostscript versions 3.n</a><br>
<a href="History2.htm">History of Ghostscript versions 2.n</a><br>
<a href="History1.htm">History of Ghostscript versions 1.n</a>
</blockquote>
<p>For other information, see the <a href="Readme.htm">Ghostscript
overview</a>.
<!-- [1.3 end hint] ======================================================== -->
<hr>
<!-- [1.0 end visible header] ============================================== -->
<h2><a name="Version4.81"></a>Version 4.81 (6/1/97)</h2>
<p>
This is a last-minute set of bug fixes before the 5.0 release.
<h3><a name="V4.81_Documentation"></a>Documentation</h3><pre>
Adds some overlooked helpers to the list. (helpers.txt)
</pre><h3><a name="V4.81_Procedures"></a>Procedures</h3><pre>
Makes a distinction between 2-part and 3-digit version numbers.
(version.mak, vms.mak)
</pre><h3><a name="V4.81_Utilities"></a>Utilities</h3><pre>
Develops the Type 1 to CFF converter a little further; it is still NOT
USABLE. (t1tot2.ps)
Removes the pstoppm.ps script, since the p*m drivers supersede it.
(pstoppm.ps, unix-end.mak)
</pre><h3><a name="V4.81_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- The PDF writer sometimes omitted an ET command before setting the
clip path. (gdevpdf.c)
- The PDF writer didn't initialize the "vector" state, leading to
some redundant output (performance bug only). (gdevpdf.c)
- The PDF writer wrote clip paths even when they included the entire
page (performance bug only). (gdevpdf.c)
Changes the PDF writer so that it recognizes not only the 14 built-in fonts
but any font with the same UniqueID and metrics. This covers some common
cases of re-registering a font with a variant Encoding. (gs_pdfwr.ps)
</pre><h3><a name="V4.81_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- SEARCH_HERE_FIRST was accidentally set to 0 on MS Windows
platforms. (bcwin32.mak, msvc4.mak, msvc5.mak, watcw32.mak)
Adds code to remove "" around arguments in the command line passed to
WinMain (MS Windows platforms). (dwmain.cpp, dwmainc.cpp)
</pre><h3><a name="V4.81_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- setsystemparams was broken. (gs_lev2.ps)
- restore was broken if -dNOBIND was invoked. (gs_dps1.ps)
- deviceinfo returned much more information than it should.
(gs_dps.ps)
- The fix for the default EndPage procedures not popping their page
count operand from the stack was wrong. (gs_init.ps, gs_setpd.ps)
</pre><h3><a name="V4.81_Library"></a>Library</h3><pre>
Fixes bugs:
- The saved character origin took the translation component of the
FontMatrix into account, which caused charpath on fonts with non-zero
translation in the FontMatrix to produce incorrect results. (gschar.c)
Removes incorrect access attributes on a couple of files. (gdevpdfm.c,
gxclist.h)
</pre>
<h2><a name="Version4.80"></a>Version 4.80 (limited) (5/28/97)</h2>
<p>
This is the candidate fileset for the 5.0 release.
<h3><a name="V4.80_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- The one-line description of the color image rendering module was
incorrect. (gximage3.c)
- Some of the VMS documentation was out of date. (make.txt,
use.txt)
- The description of the file name separator for -sFONTMAP= was
wrong. (use.txt)
- PSFile was misspelled PSfile. (use.txt)
- There were some minor typos. (gstype1.h)
- The build instructions had a lot of obsolete information for PC
environments, and didn't cover Microsoft Visual C++. (make.txt)
Explains that -sPAPERSIZE= only specifies the default papersize, and that
forcing a particular paper size also requires -dFIXEDMEDIA. (use.txt)
Adds information about building with GNU make on OpenVMS. (make.txt)
Clarifies the meaning of EOFC for streams. (strimpl.h)
Documents the new dictionary argument for the eexecDecode filter.
(language.doc)
</pre><h3><a name="V4.80_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- gs_epsf.ps didn't get installed on Unix systems. (unix-end.mak)
- The code wouldn't build with libpng 0.95b. (libpng.mak)
- One of the VMS scripts used CC_QUAL instead of CC_DEF.
(vms-cc.mak)
- version.mak wasn't included in a dependency list. (unix-end.mak)
Brings the VMS DCL script up to date again (for the last time, we hope).
(vms.mak)
Modifies all platform-independent uses of upper-case command line arguments
to deal properly with VMS, where the shell converts all command line
arguments to lower case, without requiring quotation. (devs.mak, gs.mak,
int.mak, lib.mak, zlib.mak)
Moves the compilation rules for the third-party libraries into gs.mak, so
they can be used to compile the callers as well. (gs.mak, jpeg.mak,
libpng.mak, zlib.mak)
Adds a set of files that allow building on OpenVMS using GNU make (slightly
patched). The timing on this is unfortunate, but we've wanted this for a
very long time. NOTE: be sure to look in the OpenVMS section of make.txt
for information on patching GNU make. (openvms.mak, append_l.com,
rm_all.com, rm_one.com, copy_one.com)
Adds new makefiles for building on 32-bit Windows with Borland, Watcom, and
Microsoft Visual C++ (versions 4.x and 5.0). The timing on this is
unfortunate too, but having this capability is so important that we couldn't
pass it up. (bcwin32.mak, msvc4.mak, msvc5.mak, msvccom.mak, watcw32.mak,
wincom.mak)
Removes now-obsolete makefiles. (dwcommon.mak, msc.mak, msvcwint.mak,
mscbegin.bat, watcwin.mak)
</pre><h3><a name="V4.80_Utilities"></a>Utilities</h3><pre>
Extends echogs to work in VMS environments, where the shell converts all
command line arguments to lower case, without requiring quotation.
(echogs.c)
Adds a sketch of a utility for converting Type 1 fonts to CFF. DOESN'T WORK
YET: DON'T TRY TO USE IT. (t1tot2.ps, type1ops.ps, writecff.ps)
</pre><h3><a name="V4.80_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- A type declaration wasn't compatible with libpng 0.95.
(gdevpng.c)
- kshow wasn't handled properly when producing PDF output.
(gs_pdfwr.ps)
- The PDF writer put out unnecessary ET/BT commands. (gdevpdfx.h,
gdevpdf.c, gdevpdfi.c, gdevpdfm.c, gdevpdft.c)
- The PCL XL writer put out real numbers for the miter limit, which
are not allowed (!). (gdevpx.c)
- The PCL XL writer didn't combine successive curves into a single
curve command (performance bug only). (gdevpx.c)
- The PCL XL writer could write uncompressed images with a tag
saying they were compressed. (gdevpx.c)
- The PCL XL writer always selected U.S. letter paper, rather than
the requested size. (gdevpxen.h, gdevpx.c)
- The PCL XL writer reselected the paper size on every page, even if
it hadn't changed. (gdevpx.c)
- The PCL XL writer always used shorts for line and curve
coordinates, rather than using bytes when possible (performance bug only).
(gdevpx.c)
- Because of a compiler bug, a macro with argument conflicted with a
variable name. (gdevpdfx.h, gdevpdf.c)
- A picky compiler objected to an extern for an undefined structure.
(gdevpsdf.h)
- The PDF writer sometimes didn't reset the clipping path, causing
bitmaps or rectangle to disappear. (gdevpdf.c, gdevpdfi.c)
- The PDF writer produced invalid output if the first page was
blank. (gdevpdf.c)
- The AutoRotatePages parameter for PostScript and PDF output (which
doesn't actually do anything yet) incorrectly expected a Boolean value
rather than an enumeration. (gdevpsdf.h, gdevpsdf.c)
- Some places returned -1 for an error without calling gs_note_error
or gs_return_error. (gdevm1.c, gdevmpla.c, gdevrun.c, gxclpath.c)
- The PCL XL writer produced extremely large files because it didn't
download character bitmaps. (OK, this isn't really a bug fix.) (gdevpx.c)
- The forwarding implementation of get_page_device didn't do the
right thing. (gdevnfwd.c)
- The x11alpha device didn't implement get_params properly, leading
to anomalous behavior. (gdevxalt.c)
- The PDF writer produced incorrect Count values for outlines: the
count only counted descendant leaves, omitting intermediate nodes.
(gdevpdfm.c)
Removes an assumption that images have at most 4 components. (gdevpdfi.c)
Adds an x11gray2 device, primarily for debugging. (devs.mak, gdevxalt.c)
Updates the unified printer driver with a newer version. (uninfo.ps,
gdevupd.c, *.upp)
</pre><h3><a name="V4.80_Platforms"></a>Platforms</h3><pre>
Adds the P*M devices and the X11 devices (commented out) to the OS/2
makefile. (os2.mak)
Updates the MS Windows platform to be compatible with Microsoft Visual C++
(as well as Watcom and Borland compilers). (gsdll32.def, gdevmswn.h,
gp_mswin.h, gsdll.h, dwimg.cpp, dwmain.cpp, dwmainc.cpp, dwtext.cpp,
gdevwdib.c, gdevwprn.c, gdevwpr2.c, gp_mswin.c, gsdll.c)
</pre><h3><a name="V4.80_Fonts"></a>Fonts</h3><pre>
Fixes bugs:
- Certain synthetic fonts incorrectly were loaded into local rather
than global VM. (These fonts are not part of the standard distribution.)
(gs_fonts.ps, gs_pfile.ps, *ss*.ps)
</pre><h3><a name="V4.80_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- The FAKEFONTS scan could leave junk on the stack. (gs_fonts.ps)
- Dynamically loading known encodings on demand left junk on the
stack, causing a typecheck error. (gs_res.ps)
- Some 'static' declarations were missing (gcc lossage). (iname.c)
- Some internal operators didn't have names, leading to unhelpful
error printout. (zfileio.c)
- The resource "operators" didn't always restore the stacks properly
on an error. (gs_res.ps)
- The CID font code left a garbage value on the stack during
loading. (gs_cidfn.ps)
- The defineresource implementation for built-in resources like
FMapType didn't leave the resource "value" on the stack. (gs_res.ps)
- If an operator defined by a procedure was bound into a packed
procedure, the stack-protection feature wasn't effective. (interp.c)
- findfont didn't restore the stack if it failed. (gs_res.ps)
- The showpage count passed to the BeginPage and EndPage procedures
was incremented only if a page was printed, rather than for every invocation
of showpage. (gs_init.ps, zdevice2.c)
- The default EndPage procedures didn't pop their page count operand
from the stack. (gs_init.ps, gs_setpd.ps)
- If the argument of findfont wasn't a name or a string, and no font
with that key had been registered, an error occurred. (gs_fonts.ps,
gs_res.ps)
Updates most of the remaining pseudo-operators to take advantage of stack
protection. (gs_btokn.ps, gs_cmap.ps, gs_dps1.ps, gs_dps2.ps, gs_fonts.ps,
gs_lev2.ps, gs_pdfwr.ps)
Splits the image operators into a separate file from the path painting
operators. (This should have been done a long time ago.) (iimage.h,
zimage.c, zpaint.c)
Adds more of the implementation of the NeXT alpha and compositing
operations, under an #ifdef DPNEXT. (iimage.h, zcolor1.c, zdpnext.c,
zimage.c)
Adds more of the implementation of DPS contexts. These are still not
usable. (icontext.h, icontext.c, zcontext.c, zmath.c)
Changes the help message to describe -dBATCH instead of -c quit.
(imainarg.c)
Recognizes the dictionary argument for the eexecDecode filter. (zmisc1.c)
</pre><h3><a name="V4.80_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The tracing message when starting to decode 1-D fax data reported
the run_color incorrectly. (scfd.c)
- In the CCITTFaxDecode filter, if a buffer boundary fell between a
makeup code and a final zero-length termination code, an ioerror could
occur. (scfd.c)
- Per Adobe, in the CCITTFaxDecode filter, EndOfBlock = true should
cause Rows to be ignored. (scfd.c)
- If an output stream returned EOFC, an infinite loop might result.
This problem (and the fix) are in the same fragile code as the EOD fix in
4.74, and we may again have introduced a new bug. (stream.c)
Changes the eexecDecode filter so that instead of a number, it can take a
dictionary with two keys, seed and lenIV. (Having eexecDecode skip initial
bytes at all was a design bug that is too late to fix.) (sfilter.h,
seexec.c)
</pre><h3><a name="V4.80_Library"></a>Library</h3><pre>
Fixes bugs:
- The default mapping from RGB+alpha to RGB didn't lighten
(premultiply) the color according to the alpha value. (gxcmap.c)
- The angle error metric for rational tangent screen parameters
should be simply the difference in angle, not a ratio. (gshtscr.c)
- gs_setcolorscreen and gs_sethalftone didn't initialize an
allocator pointer, leading to memory access errors. (gsht1.c)
- If a banded image was clipped, an invalid band list could be
produced. (gxclimag.c)
- A picky compiler wouldn't allow an enum to be &&'ed with a
boolean. (gschar.c)
- A short-sighted compiler didn't allow the use of actual procedure
names (as opposed to procedure variables) in a conditional expression.
(gxfill.c)
- A compiler objected to a name longer than 31 characters. (gzht.h,
gsht.c, gxclread.c)
- The height computations for banded images were not consistent,
possibly leading to invalid band lists. (gxclimag.c)
- copypage didn't reset the band writer and band reader bookkeeping
consistently, leading to incorrect output and possible errors. (gxcldev.h,
gxclist.c, gxclread.c)
- When banding, changing the halftone could lead to accessing memory
after freeing it. (gxclread.c)
- When using disk files for band storage, showpage didn't actually
delete or truncate the band list file, possibly causing subsequent copypage
operations to become confused. (gxclfile.c)
- When banding, having more than one image operator in progress at a
time confused the rasterizing pass and could produce arbitrary errors. From
PostScript, this can only happen in the case of an image whose data source
was a procedure-based stream that itself invoked an image operator: this is
a senseless and perverse thing to do, but it shouldn't break the code (and a
Genoa CET file actually does it). (gxclist.h, gxclimag.c, gxclist.c)
- Some picky compilers objected to negating unsigned values.
(gsuid.h, gsht.c, gsmemory.c, gxpcopy.c)
- When banding, if a 90- or 270-degree rotated monobit image was
clipped, invalid memory accesses could occur. (gximage.h, gximage1.c)
- The showpage count passed to the BeginPage and EndPage procedures
was incremented only if a page was printed, rather than for every invocation
of showpage. Fixing this requires removing the incrementing of the count
from the library level altogether. (gsdevice.c)
- When rendering a subrectangle of an image, the X DDA was
initialized incorrectly, causing possible errors. We think this only
affected certain banded images. (gxdda.h)
Adds a provision for images with an alpha component, under an #ifdef DPNEXT.
****** THE BANDING CODE HAS NOT BEEN UPDATED YET. ****** (gsiparam.h,
gxcmap.h, gxdither.h, gximage.h, gsimage.c, gxclimag.c, gxclread.c,
gxcmap.c, gximage.c, gximage3.c, gximage4.c ****** NOT DONE YET ******,
gximage5.c)
Adds a return_if_error macro to capture the common idiom of making a call
and then returning its value if that value is negative (error). (gserror.h)
</pre>
<hr>
<h2><a name="Version4.74"></a>Version 4.74 (limited) (5/5/97)</h2>
<p>
This fileset is supposed to fix all remaining errors reported by the Genoa
CET, and is intended to be the last incremental test fileset before the 5.0
release.
<h3><a name="V4.74_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- Mark procedures are *not* executed in the normal return case.
(estack.h)
- The line_params element of a gs_imager_state is *not* allocated
separately. (gsstate.c)
- The value passed to the PDF writer for text is a dictionary, not
an array. (gdevpdft.c)
Improves the documentation of gstate memory management. (gsstate.c)
Documents end_status = EOFC for writing streams. (stream.h, strimpl.h)
Clarifies memory management for halftones and device halftones. (gsht1.h,
gxdht.h, gxht.h, gzht.h)
Removes the "experimental" tag from the PostScript and EPS writers.
(devs.mak)
</pre><h3><a name="V4.74_Utilities"></a>Utilities</h3><pre>
Fixes bugs:
- The viewpcx utility scaled images improperly. (viewpcx.ps)
- If a PDF file used F instead of f for filling a path, pdf2ps
didn't output the fill operation. (pdf_base.ps)
Changes the ps2pdf script so that, like pdf2ps, it allows debugging
switches. (ps2pdf)
</pre><h3><a name="V4.74_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- The vgalib driver didn't clip monobit images properly.
(gdevvglb.c)
- The X driver asked for exposure events to be reported, but never
read them, causing the event queue to grow indefinitely. (gdevxini.c)
- The "vector" drivers and the PDF writer didn't properly keep track
of whether the current clipping region was the default one. (gs_pdfwr.ps,
gdevvec.h, gdevvec.c, gdevpdf.c, gdevpdft.c)
- The PDF writer had word and character spacing interchanged.
(gdevpdft.c)
- The PDF writer scaled word and character spacing incorrectly.
(gdevpdft.c)
</pre><h3><a name="V4.74_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- The user object operators didn't leave the stack in a clean state
if they failed. (gs_dps2.ps)
- UserObjects wasn't actually defined. (gs_dps2.ps)
- deviceinfo and set/currenthalftonephase were defined even if the
dps feature wasn't selected. (int.mak, gs_dps.ps, gs_dps1.ps, gs_lev2.ps,
zdps.c, zdps1.c)
- The dps feature didn't automatically include the level2 feature,
which it needs. (int.mak)
- The DPS user names mechanism didn't work, since the user names
array was subject to save and restore. (It still doesn't really work --
there is no provision for expanding the user names array, which is created
with length 0.) (gs_btokn.ps, ivmspace.h, zbseq.c, zdps.c)
- The DPS context operators didn't do all the necessary error
checking. (zcontext.c)
- The debugging printout for names printed the name index in hex
without identifying it as such. (idebug.c)
- Adding the first non-name key (or name key with a name index
beyond 4K) to a dictionary that had any deleted entries could cause some
entries to apparently disappear. (idict.c)
- If a sub-table of the name table was freed during garbage
collection, memory could be left in an inconsistent state. (iname.c, igc.c)
- findfont didn't restore the stacks reliably if an error occurred.
(gs_fonts.ps)
- definefont with an invalid Type 0 font sometimes added a FID entry
(with a dangling pointer) if it failed. (Recovering properly from a VMerror
during font creation would require a much more complicated fix than this,
but since we expect a garbage collection to occur in that case, we aren't
concerned about it.) (zfont0.c)
- Reading parameter values from a dictionary could access beyond the
end of the array that keeps track of which entries had been referenced.
(idict.h, idict.c, iparam.c)
- Halftone data was allocated in the current VM rather than in the
same VM as the halftone dictionary or procedure. (Fixing this includes
updating code as necessary for the change in halftone and device halftone
allocation.) (iht.h, ivmspace.h, zht.c, zht1.c, zht2.c)
- Closed non-executable files on the e-stack could cause a restore
to be invalid. (zvmem.c)
Adds skeleton code for the NeXT Display PostScript alpha and compositing
operators. This is not ready for use yet! (errors.h, gs_dpnxt.ps,
zdpsnext.c)
Implements more of state saving and restoring for Display PostScript
contexts. This is not ready for use yet either. (int.mak, icontext.h,
istack.h, icontext.c, zcontext.c)
Adds stub code for the Display PostScript view clip operators. (gs_dps.ps,
zdps.c)
Removes the obsolete PPM-writing operator. (int.mak, vms.mak, *.mak,
zwppm.c)
Makes the random number generator state public so it can be stored in the
context state. (zmath.c)
Changes the flag for forcing global garbage collection to a run-time
variable, for debugging. (igc.c)
Changes the handling of job control so that it doesn't use procedures that
produce an execstackoverflow when being printed. (gs_init.ps)
Updates code as necessary for the change in reference counting. (zcie.c,
zcrd.c)
Updates code as necessary for the change in off-stack gstate copying.
(zdps1.c)
Removes a small bit of obsolete code. (interp.c)
</pre><h3><a name="V4.74_Streams"></a>Streams</h3><pre>
Fixes bugs:
- An output stream that was not the last one in a pipeline could
incorrectly be asked to write its EOD marker more than once. (The fix is
very fragile and may have introduced new bugs.) (stream.c)
</pre><h3><a name="V4.74_Library"></a>Library</h3><pre>
Fixes bugs:
- The gx_device_halftone_release procedure was declared in two
different header files. (gzht.h)
- Off-stack copying of gstates could lead to a situation where
different parts of a single gstate were owned by different allocators; this
could cause them to be freed improperly, corrupting memory. We fixed this
partly by making the mixed ownership situation work, and partly by copying
more of the gstate when off-stack gstates are involved. Unfortunately, the
fixes are subtle and may have introduced new bugs. (gsstate.h, gsht.c,
gsht1.c, gspcolor.c, gsstate.c)
- If an error occurred while creating a Pattern instance, the
partially initialized instance structure wasn't freed. (gspcolor.c)
- Halftones and device halftones didn't allocate their clones or
their subsidiary structures with the correct allocator. (gsht.c, gsht1.c)
- The error statement when allocating a reference-counted object had
to be a control transfer. (gsrefct.h)
- Copying gstates incorrectly copied the memory and saved pointers,
and the pointer to the dash pattern. (gsstate.c)
- Flatness values less than 0.5 produced far more line segments than
necessary (roughly the square of the required number). Fixing this may have
bad effects on character quality -- this remains to be seen. (gxpflat.c)
- An error during installation of a halftone could leave things in
an inconsistent state. (gsht.c)
- The API didn't provide enough flexibility with respect to memory
management for halftones, or guarantee consistent allocation of a halftone
and its subelements. (gsht1.h, gsht.c, gsht1.c, gshtscr.c)
- Releasing a path didn't clear enough pointers to ensure clean
garbage collection. (gxpath.c)
- Finalizing or discarding a (cached) scaled font didn't properly
unlink it from the scaled_fonts list. (gsfont.c)
- Invoking an image operator within the BuildChar procedure for a
charpath caused an infinite loop. (gsimage.c)
- The bookkeeping for the scaled font cache was incorrect: the count
didn't always get decremented when a scaled font was freed. (gsfont.c)
- "High level" masked images were written incorrectly in the band
list as black-and-white images. (gxclimag.c)
- For "high level" images with fewer than 4 samples per pixel,
non-standard Decode values were written incorrectly in the band list.
(gxclimag.c)
- The color wasn't set correctly for "high level" masked images.
(gxclimag.c)
- The fastest case of monobit image rendering could get a memory
access error if the image lay partly outside the page. (gximage1.c)
- Clipping with an empty path was a no-op, rather than clipping out
everything. (gxcpath.c)
Makes reference-counted objects remember which allocator owns them: this
entails a NON-BACKWARD-COMPATIBLE change to some of the macros for reference
counting. This was necessary to fix the off-stack gstate copying problem.
(gsrefct.h, gscie.c, gscolor.c, gscolor1.c, gscolor2.c, gscsepr.c,
gsstate.c, gxclread.c)
Refactors the unpacking of image data, to make unpacking available as a
general facility. (gximage.h, gxsample.h, gximage.c, gximage0.c,
gximage1.c, gximage4.c, gxsample.c)
Enhances -Z? so that before freeing an object, it checks that the object was
owned by the correct allocator. (gsalloc.c)
</pre>
<h2><a name="Version4.73"></a>Version 4.73 (limited) (4/19/97)</h2>
<p>
This is an incremental bug fix release made primarily to provide a
synchronization point for an upcoming trip.
<h3><a name="V4.73_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- A reference to the uniprint documentation was incorrect.
(current.txt)
- -Olimit 1000 is not enough now for DEC Ultrix, 1200 is required;
this is also required for SGI IRIX. (make.txt)
Adds argument/result comments to all the operators defined in gs_lev2.ps.
(Eventually we will do this for all operators defined as PostScript
procedures.) (gs_lev2.ps)
</pre><h3><a name="V4.73_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The makefiles didn't provide a default value for GCONFIG_EXTRAS.
(gs.mak)
</pre><h3><a name="V4.73_Utilities"></a>Utilities</h3><pre>
Fixes bugs:
- pdf2ps didn't work with TrueType or compressed Type 1 fonts.
(gs_pdf.ps, pdf_2ps.ps, pdf_font.ps)
</pre><h3><a name="V4.73_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- A cast from byte to char was omitted. (gdevpdfm.c)
</pre><h3><a name="V4.73_Platforms"></a>Platforms</h3><pre>
Updates the VMS script (again). (vms.mak)
</pre><h3><a name="V4.73_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- A module that used strlen didn't include string_.h. (zdevice.c)
- Because of some bad PostScript code in FrameMaker output, identity
rather than unity black generation and undercolor removal functions are
required on black-and-white devices. (gs_init.ps)
- A harmless internal error during initialization left bogus
information in $error. (gs_cidfn.ps)
- startjob didn't clear the execution stack. Fixing this required
NON-BACKWARD-COMPATIBLE changes to the internal operators .instopped, .stop,
and .stopped, which are not supposed to be used by any external code.
(startjob will still give errors if executed in a file that isn't being
piped from stdin; this will take longer to fix.) (gs_init.ps, gs_lev2.ps,
iref.h, imain.c, interp.c, zcontrol.c, zfile.c)
Adds a new .execn operator, part of the startjob changes, that allows
pushing multiple items on the exec stack. Eventually this will allow us to
get rid of many dynamically created closures. (zcontrol.c)
</pre><h3><a name="V4.73_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Fixes bugs:
- Landscape-mode PDF files weren't rotated properly. (gs_pdf.ps,
pdf_main.ps)
Makes the default PDF configuration notify users more informatively when
encountering an encrypted file. (pdf_sec.ps)
</pre><h3><a name="V4.73_Streams"></a>Streams</h3><pre>
Makes the RunLengthEncode filter always generate optimally compressed
output. We did this because we thought one of the Genoa CET files loops
forever if this is not the case; but we were wrong. (srle.c)
</pre><h3><a name="V4.73_Library"></a>Library</h3><pre>
Fixes bugs:
- If one coordinate of a position or distance overflowed the
internal representable range, the other coordinate became garbage. (bug
introduced in 4.70) (gspath.c)
- The bounding box computation for strokes was slightly too large
(sometimes much too large). (gxpaint.h, gdevbbox.c, gxclpath.c, gxstroke.c)
Adds (under an #if 0) an experimental alternate halftone cell choice
algorithm. (gshtscr.c)
Adds a better comment to a particularly obscure line of C code.
(gxclimag.c)
</pre>
<h2><a name="Version4.72"></a>Version 4.72 (limited) (4/14/97)</h2>
<p>
This is another bug fix release, motivated mostly by Genoa testing. It also
updates the new uniprint driver with a major revision, and upgrades CFF
support a little bit.
<h3><a name="V4.72_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- -dNOGC only disables default automatic garbage collection, not all
garbage collection. (use.txt)
- Apparently a different set of flags is needed for newer H-P
compilers. (make.txt)
Replaces the tiny FAQ with a pointer to the on-line FAQ. (use.txt)
Updates the documentation for the uniprint driver. (devices.txt)
Clarifies the fact that Ghostscript reads Fontmap files from *all*
directories in the search list. (use.txt)
Notes that building on Linux may require SM and ICE in the list of X
libraries. (make.txt)
</pre><h3><a name="V4.72_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- An -include type42 was omitted from the level2 module description.
(int.mak)
- A mention of $(ECHOGS) in the rule for sfile should have been
$(ECHOGS_XE). (lib.mak)
- The pcx2up sample device should have been put in devs.mak rather
than lib.mak. (devs.mak, lib.mak)
- scanchar.h and scantab.c belong in the library, not the
interpreter. (devs.mak, int.mak, lib.mak)
- Some _h definitions were used before being defined, or weren't
defined at all. (devs.mak, lib.mak)
- The JPEG driver was missing a dependency. (devs.mak)
- The PDF writer was missing a dependency. (devs.mak)
- Building Level 1 systems was no longer possible. (int.mak)
Updates the VMS build scripts. (vms.mak, vms-decc.mak)
Adds *.upp to the list of files installed under Unix. (unix-end.mak)
Adds rules to the Unix makefiles to build two library files: gs.a,
consisting of the entire PostScript/PDF interpreter lacking only gs.c, and
gslib.a, consisting of the graphics library without the gslib.c test driver.
(ansihead.mak, cc-head.mak, gcc-head.mak, unixtail.mak)
</pre><h3><a name="V4.72_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- The PS/EPS writers could generate a reference to an undefined
name. (gdevps.c)
- The PDF writer produced incorrect output for multi-level outlines.
(gdevpdfm.c)
- The PDF writer didn't convert /Action to /A, and /Action/Subtype
to /S, in Annot dictionaries. (gdevpdfm.c)
- The PDF writer didn't work in Level 1 systems. (gs_pdfwr.ps)
- The PDF writer didn't transform /Rect and /R values to current
user coordinates. (gs_pdfwr.ps, gdevpdfx.h, gdevpdfm.c)
- The PNG writer could refer to the 3 predefined stdio files even in
environments where this was undesirable. (gdevpng.c)
- The PDF writer had a compiled-in limit of 100 pages of output.
(gdevpdfx.h, gdevpdf.c)
Updates the uniprint driver with a major revision that uses device
parameters that can be set from the command line, rather than PostScript
code, for configuration choices. (gdevupd.c, *.upp)
</pre><h3><a name="V4.72_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- gp_enumerate_files_next had no way to return an error. (gp.h,
gp_dosfe.c, gp_ntfs.c, gp_os2.c, gp_unifs.c, gp_vms.c) ****** NOT
IMPLEMENTED YET ******
- On the Watcom platform, CPU_TYPE >= 486 didn't automatically set
FPU_TYPE to 387. (wccommon.mak)
</pre><h3><a name="V4.72_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- Caching the current device in userdict could create dangling
references. (gs_init.ps, gs_pdfwr.ps, zdevice.c)
- If an error occurred in a BuildChar or BuildGlyph procedure, the
graphics state stack wasn't restored. (ichar.h, zchar.c, zchar2.c)
- There was an obsolete check for a structure when cleaning up after
a show operator. (zchar.c)
- Attempting to show a character with no associated glyph in a Type
3 font with a BuildGlyph procedure caused an error. (zchar.c)
- noaccess on a read-only dictionary didn't give an error.
(ztype.c)
- The dictionary passed to a Pattern's PaintProc was the original
template, not the copy made by makepattern. (gs_lev2.ps)
- Invalid font parameters could result in partially constructed
fonts, which caused problems for restore. (zfont0.c, zfont2.c)
- Files run under job control caused an error when terminating.
(gs_init.ps)
- setpagedevice didn't protect itself against malfunctioning
BeginPage or EndPage procedures. (The protection is still not perfect.)
(gs_setpd.ps)
- .type42execchar called font_param redundantly. (zchar42.c)
- The font operators didn't protect themselves well enough against
bogus font dictionaries. (zfont.c, zfont0.c)
- If an error occurred within a stringwidth, the graphics state
stack wasn't restored properly. (zchar.c)
- If an error occurred within the PaintProc of a form, the graphics
state stack was left with an extra entry. (gs_lev2.ps)
- Registering a font under a second name could corrupt data
structures. (zfont2.c)
- Different scalings of the same font should have "equal" fontIDs,
to match the Adobe implementations. (iutil.c)
- Errors detected by PostScript code during initialization either
allowed execution to continue or produced a hex stack dump, instead of just
producing a message and exiting. (interp.c)
- The memory validator didn't validate chunks at previous save
levels. (ilocate.c)
- The Level 1 size of systemdict was too small. (iinit.c)
- Attempting to define a Category resource in local VM gave a
typecheck error rather than an invalidaccess. (gs_res.ps)
- Building Level 1 systems was no longer possible. (zusparam.c)
Rearranges the interpreter code slightly so that all operator invocations go
through a single procedure when debugging. (interp.c)
Adds a -K<numK> switch to limit the total amount of memory that Ghostscript
can acquire. (imainarg.c)
Makes the memory validator check packed refs more carefully. (ilocate.c)
Makes the memory validator check explicitly for pointers to freed objects.
(igc.c, ilocate.c)
Makes the memory validator check dictionaries more carefully. (ilocate.c)
Makes the memory validator check refs embedded in structures. (ilocate.c)
Adds a debugging option that bypasses the garbage collector entirely.
(igc.c)
Adds debugging options to validate memory before/after save/restore.
(zvmem.c)
Removes the patch for the uniprint driver, since it is no longer needed.
(gs_init.ps)
Implements real-number operands in CFF fonts. (gs_cff.ps)
Implements non-default charsets in CFF fonts. (gs_cff.ps)
</pre><h3><a name="V4.72_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Fixes bugs:
- The PDF 1.2 "marked content" operators weren't defined.
(pdf_main.ps)
- Streams with binary data whose first character was an EOL (\n)
didn't parse properly. Unfortunately, the way we fixed this may break some
other files. (pdf_base.ps)
- PDF 1.2 #nn escape syntax in names wasn't recognized. ****** This
is implemented with an inefficient hack that should be moved down into C.
However, I don't want to risk introducing new bugs during the beta test
period. ****** (pdf_base.ps)
- The interpreter had a limit of 64K objects. Removing this limit
required changing a basic data structure -- admittedly a risky thing to do
during beta test. (pdf_base.ps, pdf_main.ps)
- TJ didn't multiply the offsets by the font size, causing incorrect
character positioning. (gs_pdf.ps)
</pre><h3><a name="V4.72_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The ASCIIHexDecode filter read an extra character in case of
error. (sstring.c)
Adds more tracing output to the CCITTFaxDecode stream. (scfd.c)
</pre><h3><a name="V4.72_Library"></a>Library</h3><pre>
Fixes bugs:
- The allocator client name for rendering bitmap patterns was
incorrect. (Only affects tracing output.) (gspcolor.c)
- The check for exceeding the overall allocation limit was
incorrect, because of unsigned arithmetic. (Only affects limitation of
total allocation, which is only used for debugging and benchmarking.)
(gsmemory.c)
- The 0'th component of colored screens wasn't passed through the
band list, possibly causing access errors when rasterizing. (gxclimag.c,
gxclread.c)
- setbbox could get an overflow without detecting it. (gsdps1.c)
- Images with only one component but MultipleDataSources = true
could cause a memory access error. (gximage.c)
- The buffer for unpacking 12-bit-per-sample image data was too
small, causing memory corruption. (gximage.c)
- 12-bit-per-sample images with multiple data sources sometimes
didn't pass correct pointers to image_data. (gsimage.c)
- If an image data stream reached EOF before supplying enough data
for the entire image, memory corruption could occur. (zpaint.c)
- When a device halftone was freed, some pointers in the halftone
cache weren't cleared, leading to possible dangling references. (gsstate.c)
- Invalid font parameters could result in partially constructed
fonts, which caused problems for restore. (gxfont0.h, gsfont.c)
- If an error occurred within a stringwidth, the graphics state
stack wasn't restored properly. (gschar.c)
- The (static) limit on the size of a command line argument was too
small. (gsargs.h)
- Building Level 1 systems was no longer possible. (gxdht.h,
gsht.c, gsht1.c)
- Truncation instead of rounding caused colors on gray-scale devices
to come out very slightly too dark. (gxcmap.c)
- The Decode mapping table constructed for images was slightly
inaccurate for ranges other than [0 1] or [1 0]. (gximage.c)
</pre>
<h2><a name="Version4.71"></a>Version 4.71 (limited) (3/31/97)</h2>
<p>
This is a bug fix release during the beta test period.
<h3><a name="V4.71_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- A larger value of -Olimit is now needed to optimize gxclread.c.
(make.txt)
- Some comments were incorrect. (gdevbbox.h, sfilter1.c)
Updates the GPL with a newer version from FSF. (COPYLEFT)
Notes that the gcc 2.7.x code generation bug is fixed in 2.7.2.1.
(make.txt)
</pre><h3><a name="V4.71_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- Some streams required by high-level drivers were incorrectly
grouped with the interpreter rather than the library. (int.mak, lib.mak)
- The choice of implementation for file streams was buried in an
obscure place, rather than being included in the configuration definitions
at the head of each makefile. (We believe there are no more such buried
parameters.) This involved a NON-BACKWARD-COMPATIBLE change in the way this
choice was specified. (lib.mak, *.mak)
- Some dependencies were missing. (lib.mak)
</pre><h3><a name="V4.71_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- A variable was used before being initialized, causing get_bits
(and raster ops) to fail when using alternate X devices. (bug introduced in
4.70.) (gdevxalt.c)
- Some 'private' declarations were omitted. (It is infuriating that
gcc doesn't check for this!) (gdevps.c, gdevpx.c)
- A few character strings were used as byte arrays without a cast.
(gdevpx.c)
- The EPS writer didn't write a correct bounding box, and didn't
write it at the beginning of the file. (gdevvec.h, gsstruct.h, gdevps.c,
gdevvec.c)
- x_copy_color specified an incorrect (too large) image width.
Apparently this only mattered because it could cause invalid memory
accesses. (gdevx.c)
- x_copy_mono also specified too large an image width. It's not
clear this made any difference. (gdevx.c)
- The default implementation of strip_copy_rop didn't clamp Y values
to legal values for get_bits. (gdevmrop.c)
</pre><h3><a name="V4.71_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- Some initialization files prematurely switched the interpreter
into Level 2 mode, causing some Level 2 operators not to be defined. (bug
introduced in 4.60 or later.) (gs_cff.ps, gs_cidfn.ps, gs_cmap.ps,
gs_init.ps, gs_res.ps)
</pre><h3><a name="V4.71_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The choice of procedure names for the file-descriptor-based
implementation of file streams was buried in a .c file, rather than being
chosen in the makefile. (sfile.c[deleted], sfileno.c[deleted], sfxstdio.c,
sfxfd.c, sfxboth.c)
</pre><h3><a name="V4.71_Library"></a>Library</h3><pre>
Fixes bugs:
- rcurveto was broken -- it drew curves to random points. (bug
introduced in 4.61.) (gspath.c)
- A trailing comma in an enum definition upset some compilers. (bug
introduced in 4.70.) (gstype1.h)
- Type 1 fonts with hint replacement could produce anomalous or
clipped output, or even missing lines. (Also cleans up some out-of-date
formatting.) (gxtype1.h, gstype1.c, gxhint2.c)
- Removes some conditionals for choosing between old and new
algorithms. (gxhint3.c)
- makebitmappattern required that the bitmap consist of only a
single tile repetition. (gspcolor.c)
- Some computations on RasterOps didn't take transparency into
account properly. (gdevmrop.c)
- The structure definition for imager and graphics states had an
incorrect offset for line_params, causing the garbage collector not to mark
or relocate dash patterns, possibly causing memory faults, FPEs, or invalid
output. (bug introduced since 4.03.) (gsstate.c)
- 'show' operators gave a limitcheck for unreasonable coordinates,
even if limit clamping was enabled. (gschar.c)
Implements banded filling and stroking with colored halftones, in addition
to pure colors and binary halftones. Since we are in a beta test period,
actual use of this feature (but *not* all the code implementing it) is
disabled under an #ifdef FUTURE. (gsdcolor.h, gxcldev.h, gxclpath.h,
gxdht.h, gxhttype.h, gsht.c, gxclimag.c, gxclpath.c, gxclread.c)
</pre>
<h2><a name="Version4.70"></a>Version 4.70 (limited) (3/26/97)</h2>
<p>
This fileset fixes the one outstanding compilation problem on PC platforms
and the old problem of limitchecks for out-of-bounds coordinates, and adds a
variety of new features, including the ability to save away the band lists
for pages and rasterize them later and/or elsewhere in any order and
combination. This is the first "serious beta" candidate for the next
general release.
<p>
Fileset numbers 4.62 through 4.69 were skipped deliberately.
<h3><a name="V4.70_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- The list of special -d and -s switches was out of date. (use.txt)
- The name of the zlibDecode filter was incorrectly written
zlibEncode. (language.txt)
Documents where to find out how to install gcc 2.7.x on SGI IRIX 6.x.
(make.txt)
Documents a makefile patch required on NeXTStep. (make.txt)
Documents how to patch gcc to fix the AXP code generation bug. (make.txt)
Adds documentation for the new unified printer driver. (devices.txt)
</pre><h3><a name="V4.70_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- 'make distclean' didn't remove a couple of files. (gs.mak)
- A library module didn't include a necessary dependency. (lib.mak)
- A new .ps file wasn't installed properly. (unix-end.mak)
- File write dates weren't updated properly on PC platforms, causing
unnecessary rebuilding. (cp.bat, gs.mak, msc.mak, msvcwint.mak, os2.mak,
tccommon.mak, wccommon.mak, zlib.mak)
- An unnecessary explicit compilation line for gdevcdj.c caused
problems in the Mac environment. (devs.mak)
- The VMS scripts were out of sync again. (vms.mak)
- The VMS build scripts didn't include the new JPEG driver.
(vms-*.mak)
- A number of makefile macros were referenced before being defined.
(devs.mak, lib.mak, int.mak, *.mak)
- libpng.mak didn't work with PVERSION=90. (libpng.mak, zlib.mak)
Separates install-scripts from install-exec and install-data.
(unix-end.mak)
Moves the definition of SEARCH_HERE_FIRST from iminst.h to the makefiles.
(*.mak, iminst.h, iconf.c, imain.c)
Adds a -dBATCH switch that causes Ghostscript to exit after processing the
files named on the command line. (gs_init.ps)
Adds the PostScript, EPS, and PCL XL writers, and the color and gray-scale
JPEG drivers, to all Unix configurations. (ansihead.mak, cc-head.mak,
gcc-head.mak)
</pre><h3><a name="V4.70_Drivers"></a>Drivers</h3><pre>
NOTE: because of a change in an internal interface (clist_output_page), the
cp50 driver no longer works. This is a user-contributed driver for which we
take no responsibility.
Fixes bugs:
- gdevcdj.c wasn't compatible with ansi2knr. (gdevcdj.c)
- 'private' was omitted from some declarations. (gdevjpeg.c)
- The PostScript writer didn't keep track of the current color
properly. (gdevps.c)
- RESOLUTION was misspelled in a header. (gdevbjc.h)
- Some compilers objected to the use of a floating point initial
resolution value. (gdevbjc.h)
- Some compilers didn't allow static initialization of a union.
(gsdcolor.h)
- If a TIFF driver got an error when initializing the CCITTFax
encoder, it returned a bogus error code. (gdevtfax.c)
- The PDF writer produced incorrect output for Indexed color space
images. (gdevpdfi.c)
- For many fatal error conditions, the X driver called exit()
instead of returning an error. (gdevx*.c)
Adds new drivers:
- epswrite, an EPS-writing driver (instead of making EPS output a
parametric option of the PostScript-writing device). (devs.mak, gdevps.c)
- pcxcmyk, a 4-bit CMYK PCX driver. This is probably only useful
for debugging CMYK color rendering. (gdevpcx.c)
- jpeggray, a JPEG driver that produces gray-scale rather than color
output. Thanks to Tom Lane for contributing this. (gdevjpeg.c)
- uniprint, a unified printer driver for a wide variety of inkjet
printers. Thanks to Gunther Hess for contributing this. (gdevupd.c)
Adds the resolution (pHYs) to the output of the PNG drivers. (gdevpng.c)
Adds recognition of the ASCII85EncodePages parameter to the PostScript and
EPS writers. (gdevps.c)
Makes the new JPEG driver write a JFIF header, which contains the image
resolution. (gdevjpeg.c)
Changes the "vector" device support interface so relative movement can be
detected easily. THIS IS STILL SUBJECT TO CHANGE WITHOUT NOTICE.
(gdevvec.h, gdevpsdf.c, gdevps.c, gdevpx.c, gdevvec.c)
Changes the PostScript, EPS, and PDF writers to recognize curves and lines
that can be represented more efficiently. (gdevpsdf.h, gdevpsdf.c,
gdevps.c)
Adds a new parameter to the PDF writer, FirstObjectNumber. This defines the
first object number that will be used in the output. The default, and
minimum, value is 1; the maximum value is approximately 2^31. This is for
the benefit of dvipdf; we don't expect it to be used otherwise. In fact,
using it appears to produce files that Adobe Acrobat Reader won't accept,
even though the files are perfectly compliant with the published PDF
specification. (gdevpdfx.h, gdevpdf.c, gdevpdfp.c)
</pre><h3><a name="V4.70_Platforms"></a>Platforms</h3><pre>
Removes the makefile for the 16-bit Borland C++ platform. This was the last
supported 16-bit platform; we expect to gradually drop all 16-bit
concessions from the code itself. (bcwin.mak)
</pre><h3><a name="V4.70_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- The initial size of systemdict was too small, causing the
interpreter to slow down substantially. (iinit.c)
- A library module depended on an interpreter module. (zcsindex.c)
- A logically necessary (but accidentally always available) #include
was missing. (ifont.h)
Moves set/currentoverprint to a more appropriate module. (zcolor2.c,
zcssepr.c)
Changes the default transfer functions so that they do something reasonable
when given operands outside the legal [0..1] range. We only do this to work
around a bug in FrameMaker output, which uses the transfer function as the
screen function (!). (gs_init.ps)
Changes the CMap construction algorithm to use the new, more compact
representation. (zfcmap.c)
Adds support for Adobe's Compact Font Format. Many individual features are
not implemented yet: see the comment in the source code for details.
(gs_cff.ps)
Adds support for Type 2 charstrings in Type 1 fonts. (ifont.h, zfont1.c)
Changes the Type 1 character rendering operator for the library change in
Type 1 fonts. (zchar1.c, zfont1.c)
Initializes the graphics state limit clamp flag to true. (zgstate.c)
Temporarily adds a configuration file for the new unified printer driver,
and arranges for it to be read at startup. This arrangement will be
replaced very soon by a different one based on command line parameters.
(gs_init.ps, uniprint.ps)
</pre><h3><a name="V4.70_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Adds support for Compact Font Format fonts. (pdf_font.ps)
</pre><h3><a name="V4.70_Streams"></a>Streams</h3><pre>
Adds a glue procedure needed for the new jpeggray driver. (sjpeg.h,
sjpege.c)
Removes the width limit of 32K in the CCITTFaxEncode filter. The new limit
is absurdly large (about 50M). (scf.h, scfx.h, scfe.c)
</pre><h3><a name="V4.70_Library"></a>Library</h3><pre>
Fixes bugs:
- A library module depended on an interpreter module. (gxcolor2.h,
gscolor2.c)
- When rendering a band, clipping was sometimes used when it wasn't
necessary. (Performance only.) (gxclread.c)
- Stroking didn't check the path against the device clipping box in
the absence of an explicit (non-default) clipping path. (Performance only.)
(gxstroke.c)
- A reference to an opaque type upset a couple of compilers.
(gxclread.c)
- Negative 32-bit numbers in Type 1 fonts didn't work properly on
64-bit systems. (gstype1.c)
- A logically necessary (but accidentally always available) #include
was missing. (gxbitmap.h)
- A header wasn't protected against double inclusion. (gxclist.h)
- Clipping devices didn't store their actual width and height.
(gxcpath.c)
- The slow-case check for thin lines was incorrect. (gxstroke.c)
- Images didn't compute their clipping boxes correctly if there
wasn't an explicit clipping path. (This must be a very recent bug, since it
creates an overflow condition that prevents monochrome images from being
rendered at all.) (gximage.c)
Moves set/currentoverprint to a more appropriate module. For clients of
gs_set/currentoverprint, this is a NON-BACKWARD-COMPATIBLE CHANGE, since the
header file is now separate. (gscolor2.h, gscsepr.h, gscolor2.c, gscsepr.c)
Replace the MetroWerks work-around with a different, more general one.
(gdevmem.h, gdevmem.c, gxdevice.h)
Speeds up the Type 1 interpreter a little. (gstype1.c, gxhint3.c)
Redesigns the internal representation of CMaps to be more space-efficient.
(gxfcmap.h, gschar0.c, gsfcmap.c)
Implements a facility for saving away pages and rendering them later.
Currently this requires the pages to be represented as band lists on files,
and only allows X translation when rendering. This involves adding the
following new printer device parameters:
BandHeight
BandWidth
BandBufferSpace
Also changes the names of the printer device parameter elements from
use_buffer_space to BufferSpace and from max_bitmap to MaxBitmap for
consistency. (gdevprn.h, gxcldev.h, gxclio.h, gxclist.h, gxclmem.h,
gxclpage.h, gxdevmem.h, gdevmem.c, gdevp2up.c, gdevprn.c, gxclmem.c,
gxclpath.c, gxclread.c)
Changes the band list implementation API to allow closing a file without
deleting it, and to allow reopening an existing file. This is a
NON-BACKWARD-COMPATIBLE change to a deep internal interface. (gxclio.h,
gxclmem.h, gxclfile.c, gxclist.c, gxclmem.c)
Speeds up rendering of colored halftones, by recognizing cases where one or
more planes don't actually require screening, unrolling a loop, and doing
basic clipping before halftoning. (gxcht.c)
Adds a graphics state parameter, gs_set/currentlimitclamp, that changes the
handling of out-of-range coordinates to clamp them in a way that produces
approximately the intended output most of the time, rather than causing a
limitcheck. Currently this is only designed to work with the basic path
construction operations ([r]moveto, [r]lineto, [r]curveto, closepath); it
does not work with many other operations such as show, flattenpath or the
rectangle operations. Note also that while currentpoint will return the
correct (unclamped) value, reading out the path with pathforall will return
clamped values. This involves NON-BACKWARD-COMPATIBLE changes to the path
structure (but not to any public interfaces). (gxpath.h, gxtype1.h,
gzpath.h, gzstate.h, gspath.c, gspath1.c, gsstate.c, gstype1.c, gxpaint.c,
gxpath.c, gxpath2.c, gxpcopy.c)
Adds support for Type 2 charstrings. Some features are not implemented yet:
see gstype2.c for details. (gscrypt1.h, gstype1.h, gxfont1.h, gxop1.h,
gxtype1.h, gstype1.c, gstype2.c, gxhint2.c, gxhint3.c, gxtype1.c)
</pre>
<hr>
<h2><a name="Version4.61"></a>Version 4.61 (limited) (3/13/97)</h2>
<p>
This fileset cleans up many compiler warnings. It adds support for
CMap-encoded fonts, and a driver that writes JPEG images.
<h3><a name="V4.61_Documentation"></a>Documentation</h3><pre>
Corrects an error in the description of the internal CodeMap structure.
(gs_cmap.ps)
Documents the fact that the optimizer in gcc 2.7.2.1 is broken on AXP
machines. (make.txt)
Corrects the name of the .setglobal/.currentglobal procedures. (zvmem2.c)
Updates current.txt in preparation for the release. (current.txt)
</pre><h3><a name="V4.61_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The VMS script was out of date again. (vms.mak)
- CIDFont support unnecessarily required composite font support.
(int.mak)
- CMap and CIDFont support had improper dependencies on
initialization order. (lib.mak, int.mak)
- Some dependencies were missing in the JPEG library code.
(jpeg.mak)
Adds the new JPEG driver to all standard configurations. (*.mak)
</pre><h3><a name="V4.61_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- A dependency was omitted from the makefile. (devs.mak, gdevps.c)
Cleans up some warnings from picky compilers. Some of these actually
indicated problems, such as unreachable code. (gdevpdfx.h, gdevbj10.c,
gdevcdj.c, gdevpdfp.c, gdevstc.c)
Adds a JPEG-writing driver. Currently this only produces RGB output and
only has a QFactor parameter, but eventually it could take all the other
parameters of the DCTEncode filter. (devs.mak, int.mak, lib.mak,
gdevjpeg.c)
Refactors the PDF and PostScript output drivers so that both of them
understand all the relevant documented PDF distiller parameters. (The
PostScript driver currently disregards nearly all of them.) (gdevpdfx.h,
gdevpsdf.h, gdevvec.h, gdevpdf*.c, gdevps.c, gdevpsdf.c, gdevpx.c)
</pre><h3><a name="V4.61_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- The MetroWerks C compiler gave an inexplicable error on a
particular initialization. (gdevmem.h, gdevmem.c)
</pre><h3><a name="V4.61_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- The insideness testing operators sometimes reported hits
incorrectly. (zupath.c)
- Mixed-type arithmetic used floats rather than doubles when
converting integers, possibly leading to loss of precision. (zarith.c,
zrelbit.c)
- composefont was defined in a private dictionary, not in
systemdict. (gs_cmap.ps)
- composefont didn't work, for several different reasons.
(gs_cmap.ps)
- After a Type 1 font called an OtherSubr, an invalid memory access
usually occurred, because of an incorrect attempt to free a data structure.
(zchar1.c)
- 2 .setlanguagelevel gave an error if globaldict hadn't been
defined yet. (zmisc2.c)
Cleans up some warnings from picky compilers. Some of these actually
indicated problems, such as unreachable code, or failure to check for
(implausible) out-of-range data. (idict.c, idparam.c, igc.c, iinit.c,
imain.c, iscan.c, zbseq.c, zchar1.c, zdps1.c)
Adjusts clients for a change in the internal character cache structure and
the introduction of the font next-glyph procedure. (zfont.c, zfont0.c)
Refactors the Level 1 / Level 2 interpreter split slightly so that composite
fonts don't require all of Level 2. (int.mak, gs_dps1.ps, gs_dps2.ps)
Adds FMapType 9 (CMap-encoded) composite font support. (int.mak,
gs_cmap.ps, ifont.h, zfcmap.c, zfont.c, zfont0.c)
</pre><h3><a name="V4.61_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Adds recognition of /Identity values for BG, UCR, and TR functions in
ExtGState resources. (General function values still aren't recognized.)
(pdf_draw.ps)
Centralizes the handling of inherited attributes. (pdf_draw.ps,
pdf_main.ps)
Starts to add support for Type 0 fonts. (pdf_font.ps, pdf_main.ps)
</pre><h3><a name="V4.61_Streams"></a>Streams</h3><pre>
Cleans up some warnings from picky compilers. Some of these actually
indicated problems, such as unreachable code. (shc.h, scfd.c, sfilter2.c,
siscale.c, stream.c)
</pre><h3><a name="V4.61_Library"></a>Library</h3><pre>
Fixes bugs:
- Some picky compilers disliked certain conditional expressions.
(gxclread.c)
- Some picky compilers couldn't handle an extraneous semicolon.
(gdevvec.h)
- A cast from byte ** to const byte ** was missing. (gdevvec.c)
- Resizing the levels array of a halftone order when banding could
cause invalid memory accesses. (bug introduced in 4.60) (gxclread.c)
- One picky compiler didn't allow taking the address of an extern
undefined structure. (lib.mak, gxclread.c)
- When rendering Type 1 fonts, character overshoot was usually
suppressed when it shouldn't have been, often producing "squashed"
characters. (gxhint1.c)
- On systems where sizeof(long) > sizeof(int), coordinate values of
more than 22 bits were passed through the band list incorrectly, producing
incorrect output. (gxclread.c)
Cleans up some warnings from picky compilers. Some of these actually
indicated problems, such as unreachable code or (hypothetical) loss of
precision. (gsdevice.c, gshsb.c, gsht.c, gsstate.c, gstype1.c, gxclimag.c,
gxclpath.c, gxclread.c, gxpdash.c)
Makes using font hints conditional, for debugging. (gxhint1.c)
Adds library-level support for FMapType 9 (CMap-encoded) composite fonts.
There is still no support for rearranged fonts. (gsccode.h, gsfcmap.h,
gsstruct.h, gxfcache.h, gxfcmap.h, gxfont.h, gxfont0.h, gschar.c, gschar0.c,
gsfcmap.c, gsfont.c, gsfont0.c)
Splits band list control and utilities from rectangle-oriented commands,
because a file was getting too big. (gxclist.c, gxclrect.c)
Moves the temporary file names for command lists from the printer device
structure to the command list structure; moves opening and closing the
temporary files from gdev_prn_alloc/free to clist_open/close. (gdevprn.h,
gxclist.h, gdevprn.c, gxclist.c, gxclread.c)
Changes the command list storage implementation interface to pass the file
name to the clist_rewind and clist_fseek functions, for the benefit of OSs
that require closing and reopening a file to switch between reading and
writing. This is a NON-BACKWARD-COMPATIBLE change in a non-public
interface. (gxclio.h, gxclmem.h, gxclfile.c, gxclist.c, gxclmem.c)
Changes the get_outline procedure in Type 42 fonts to return the length of
the outline data as well as the pointer. This is a NON-BACKWARD-COMPATIBLE
change in a semi-public interface. (gxfont42.h, gstype42.c)
</pre>
<h2><a name="Version4.60"></a>Version 4.60 (limited) (3/2/97)</h2>
<p>
This fileset moves color rendering up from the graphics state to the imager
state so that color rendering can happen after banding. It also shifts
image rendering to the rendering pass of banding for many common cases
(often referred to inaccurately as "high-level image" capability). The
changes involved are substantial and in some respects subtle, so
unfortunately it is quite possible that some new bugs have been introduced.
<p>
This fileset also includes improvements to the new PCL XL driver
(pxlmono/color), and introduces an experimental PostScript driver (pswrite).
<h3><a name="V4.60_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- The argument list of colorimage was incorrect. (zcolor1.c)
- false .charboxpath incorrectly claimed to create the correct path
even when the CTM was not well-behaved. (language.txt)
- The discussion of the "main program" files was out of date.
(make.txt)
Updates the OS/2 EMX documentation. (make.txt)
Modifies the Aladdin Ghostscript Free Public License slightly so it may be
applied to other software packages. (PUBLIC)
Updates inaccurate build documentation for several Unix platforms.
(make.txt, ansihead.mak, cc-head.mak, gcc-head.mak, libpng.mak)
Notes a problem with the MIPSpro 7.1 compiler. (make.txt)
</pre><h3><a name="V4.60_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- Most makefiles didn't include version.mak. (msc.mak,
msvcwint.mak, os2.mak, tctail.mak, wctail.mak)
- There was an incorrect dependency for the Windows printer device.
(devs.mak)
Moves the PDF writer to devs.mak. (devs.mak, int.mak)
Updates the main VMS script to be structured like version.mak. (vms.mak)
</pre><h3><a name="V4.60_Drivers"></a>Drivers</h3><pre>
Factors out the stream-writing procedures from the PDF writer, so they can
be shared with the new PostScript writer. (gdevpdfs.h => gdevpstr.h,
gdevpdfx.h, gdevpsdf.h, gdevpdf.c, gdevpdfi.c, gdevpdfs.c => gdevpstr.c,
gdevpdft.c, gdevpsdf.c)
Adds a PostScript writer (pswrite), similar to the PDF and PCL XL drivers.
Currently this handles fill/stroke graphics and Level 1 images; everything
else (including text) is turned into bitmaps. (devs.mak, gdevps.c)
Changes the names of the PCL XL drivers from hpxmono/color to pxlmono/color.
(devs.mak, gdevpx.c)
Updates the "vector" device support interface. THIS IS STILL SUBJECT TO
CHANGE WITHOUT NOTICE. (gdevvec.h, gdevpx.c, gdevvec.c)
Makes the vgalib driver a page device. This seems bizarre, but it's
necessary for setpagedevice to work with it. (gdevvglb.c)
Updates some drivers for the new color mapping interfaces. (gdevpx.c)
Updates the user-contributed Canon LBP-8II and LIPS III driver.
(gdevlbp8.c)
</pre><h3><a name="V4.60_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- The workaround for Ultrix's incorrect implementation of sh -e
still didn't work. (unixtail.mak)
- The definition of offset_of didn't work on the Mac. (stdpre.h)
Updates the OS/2 EMX linker command per input from a user. (os2.mak)
</pre><h3><a name="V4.60_Fonts"></a>Fonts</h3><pre>
Adds .pss (apparently used by Adobe for Multiple Master font instances) to
the list of extensions skipped by the GS_FONTPATH directory scanner.
(gs_fonts.ps)
</pre><h3><a name="V4.60_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- Programs that rebind null, true, and/or false could cause all
kinds of problems. We've only fixed a couple of the places that might be
affected (findfont, quit), by wrapping an explicit "systemdict begin/end"
around the code; fixing this completely would probably require wrapping this
implicitly around almost every pseudo-operator, which would be too
expensive. (gs_fonts.ps, gs_lev2.ps)
- In a Level 2 system, grestoreall stopped one level too early.
(zdevice2.c)
- setpagedevice didn't restore the stack properly if it got an
error. (gs_setpd.ps)
Changes the GC pointer enumeration interface to reduce the number of
'discarding const' warnings. See under Library below. (igc.c)
Updates the interpreter for the change in the imager / graphics state split.
(zpcolor.c)
Makes the stack-restoring behavior of pseudo-operators non-optional.
(interp.c)
</pre><h3><a name="V4.60_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Fixes bugs:
- PDFDocEncoding and WinAnsiEncoding incorrectly had `minus' at
position 45 rather than `hyphen'. (gs_pdf_e.ps, gs_wan_e.ps)
</pre><h3><a name="V4.60_Streams"></a>Streams</h3><pre>
Fixes bugs:
- A header file wasn't protected against double inclusion.
(stream.h)
- any_abs was redefined. (spngp.c)
- The CCITTFaxDecode filter didn't fully initialize the "previous
line" for 2-D decoding, so if the very first line of data was 2-D, an
out-of-bounds memory access could occur. (scfd.c)
</pre><h3><a name="V4.60_Library"></a>Library</h3><pre>
Fixes bugs:
- gs_image_next could read too much data, causing errors at the
interpreter level. (gsimage.c)
- The bitmaps stored in the Pattern cache were usually freed,
leaving dangling pointers. (gsdcolor.h, gxpcache.h, gxpcolor.h, gsstate.c,
gxpcmap.c)
- There was still one assignment to a const structure, and there
were some unnecessary const-discarding casts. (gxclread.c)
- If a character in a Type 3 font was defined by executing 'show'
type commands, charpath did the wrong thing (didn't pick up the paths
created by the inner show). Similarly, if it uses 'stroke', true charpath
did the wrong thing (appended the path rather than the strokepath path).
(gxchar.h, gschar.c, gspaint.c)
- A header file wasn't protected against double inclusion.
(gserror.h)
- The new fast implementation of rectfill didn't handle rectangles
with negative width/height. (bug introduced in 4.32) (gsdps1.c)
- Reading banded high-level images calculated the image height
incorrectly, (usually) causing a rangecheck. (gxclread.c)
- When reading band data, a memory fault could occur if the halftone
cache hadn't been allocated yet. (gxht.c)
- The imager state data for high-level images wasn't written soon
enough. (gxclimag.c)
- High-level images computed bounding boxes incorrectly, so they
could write some garbage data in the band list, and could also fail to write
some information. (gsmatrix.h, gxmatrix.h, gxclimag.c)
- High-level images wrote the raster value incorrectly in the band
list. (gxclimag.c)
- Images with non-zero initial source X and non-portrait orientation
were displaced on the page. (In practice, this only applied to some banded
high-level images.) (gximage.c)
- The bounding box device didn't forward output_page calls, causing
pages to be dropped or overprinted. (gdevbbox.c)
- The band renderer considered all non-zero return codes as errors,
rather than only negative codes. (gxclread.c)
- An unnecessary extern hadn't been removed. (gxclimag.c)
- Some macros didn't parenthesize uses of their arguments, causing
syntax errors. (gsrefct.h)
- The screen phase and color_info weren't set correctly when
rendering bands. (gsstate.h, gsht.c, gxclread.c)
- A header file didn't declare all the opaque types it used.
(gsdevice.h)
- Indexed color spaces didn't work with banded images. (They still
don't -- the check for writing the color space, and the code for reading the
table or map, are incomplete.) (gxclist.h, gxclpath.h, gxclimag.c,
gxclpath.c, gxclread.c)
In preparation for implementing post-banding halftoning:
- Moves color rendering information, including alpha value, from
graphics state to imager state; also moves the allocator pointer. This is
quite a subtle change, and may have a significant bug tail. (gxdcolor.h,
gxht.h, gxistate.h, gzstate.h, gschar.c, gsdps1.c, gspaint.c, gsstate.c,
gxclread.c)
- Changes all the relevant color space and color mapping procedures
so they take a const gs_imager_state * (and, in some cases, a [const]
gx_device *) instead of a const gs_state *. This is a
non-backward-compatible change, but it only affects internal interfaces.
(gsdcolor.h, gxcmap.h, gxcspace.h, gxdcconv.h, gxdcolor.h, gxdither.h,
gxpcolor.h, gzht.h, gschar.c, gscie.c, gscolor.c, gscolor1.c, gscolor2.c,
gscsepr.c, gsdevice.c, gsimage.c, gspcolor.c, gxcht.c, gxcmap.c, gxdcconv.c,
gxdcolor.c, gxht.c, gximage.c, gximage[2345].c, gxpcmap.c)
- Changes the color and color space reference count adjustment
procedures similarly, to take a gs_memory_t * instead of a gs_state_t *.
(gxcspace.h, gscie.c, gscolor.c, gscolor2.c, gscsepr.c, gspcolor.c)
- Changes the gs_halftone in the graphics state from being part of
the gs_state_contents to being an independent reference-counted object.
This too may have a significant bug tail. (gxht.h, gxistate.h, gsht.c,
gsstate.c)
- Changes the image processing code so it no longer assumes that the
gs_imager_state is actually a gs_state. (gximage.h, gximage.c, gximage2.c,
gximage3.c, gximage4.c, gximage5.c)
- Adds a unique ID value to device halftones, so that it's possible
to detect (non-)changes quickly. (gxdht.h, gsht.c)
Finishes the code for writing and reading color rendering information in the
band list. This involves changes to several band list opcodes. (gsht.h,
gsht1.h, gxcldev.h, gxclist.h, gxclpath.h, gxdht.h, gzht.h, gsht.c, gsht1.c,
gxclbits.c, gxclimag.c, gxclist.c, gxclread.c)
Changes the garbage collector pointer enumeration procedure interface
slightly to reduce the number of 'discarding const' warnings. THIS IS A
NON-BACKWARD-COMPATIBLE CHANGE for anyone who didn't use the
ENUM_PTRS_BEGIN[_PROC] macro to start a pointer enumeration procedure (which
should be no one). (gsstruct.h, gsmemory.c)
Corrects a few more needlessly const-discarding casts. (gxfcache.h,
gxccache.c)
Checks for file reading errors when rasterizing bands. (gxclread.c)
</pre>
<hr>
<h2><a name="Version4.51"></a>Version 4.51 (limited) (2/9/97)</h2>
<p>
This version contains a more reasonable high-level PCL XL driver. The VMS
build script is working again, we think.
<h3><a name="V4.51_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The gsdll_h macro wasn't defined all the places it was needed.
(devs.mak, os2.mak)
</pre><h3><a name="V4.51_Drivers"></a>Drivers</h3><pre>
Continues to develop the "vector" driver infrastructure and the PCL XL
driver. EVERYTHING IN THESE FILES IS SUBJECT TO CHANGE WITHOUT NOTICE.
(gdevvec.h, gdevvec.c)
Brings the PCL XL driver up to usable quality for graphics. Most
fill/stroke graphics, and portrait-orientation bitmap images up to 8 bits
per pixel, are converted directly to their PCL XL equivalents. Text is
still treated as bitmaps. Both gray-scale and color output are now
supported. (devs.mak, gdevpx.c)
</pre><h3><a name="V4.51_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- When using gsos2.exe with gsdll2.dll, reducing the size of the
page bitmap caused a limitcheck error with the message
Failed to decommit memory in pm_alloc_bitmap, rc = 87 (gdevpm.c)
- The scripts that construct gconfig_.h failed on Ultrix, because
Ultrix's implementation of sh -e is incorrect. (unixtail.mak, ugcclib.mak)
- Some systems that have sys/times.h don't define CLK_TCK, making a
compilation fail. (time_.h)
</pre><h3><a name="V4.51_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- An omitted semicolon wasn't detected by gcc. (idict.c)
Removes a source of unnecessary duplication by getting the revision number
and date from version.mak. (gs.mak, int.mak, version.mak, gscdef.c)
</pre><h3><a name="V4.51_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The minimum buffer sizes for the RunLengthDecode filter hadn't
been changed to reflect the algorithm improvement made in release 4.38.
(srld.c)
Changes the RunLengthEncode filter so it can make progress with only a
2-byte output buffer. (srlx.h, srle.c)
</pre><h3><a name="V4.51_Library"></a>Library</h3><pre>
Fixes bugs:
- Because of a typo, the slow general algorithm was always used for
monochrome images. (Performance bug only, but a serious one.) (gximage2.c)
- Dots (zero-length lines with round caps and zero dot length)
caused an infinite loop. (bug introduced in 4.40) (gxstroke.c)
- Some image data unpacking procedures were always required, but
weren't always included. (bug introduced in 4.50) (gximage.c, gximage0.c,
gximage3.c)
- Images with 8 bits per pixel and non-identity Decode produced
garbage. (bug introduced later than 4.03) (gximage0.c)
- Some necessary casts and omitted punctuation weren't detected by
gcc. (gxpath.h, gsargs.c, gsstate.c, gxclread.c, gxpdash.c)
- The band list became confused if a band had no commands at all.
(gxclread.c)
- If a path included a closepath followed by a moveto to the same
point, it could be written incorrectly in the band list. (bug probably
introduced in 3.60) (gxclpath.c)
Changes some internal computations for arcs from float to double for greater
accuracy. (gspath1.c)
</pre>
<h2><a name="Version4.50"></a>Version 4.50 (limited) (1/31/97)</h2>
<p>
This release contains an experimental high-level PCL XL driver, a little
more support for CID/CMap fonts, and the usual bug fixes. NOTE: the VMS
build script is known to be out of sync with the makefiles again; we still
don't see any alternative to constant struggles with this problem.
<h3><a name="V4.50_Documentation"></a>Documentation</h3><pre>
Corrects the -h message, which gave an incorrect file name for the bug
report form. (imainarg.c)
Removes documentation for 16-bit MS-DOS platforms with the Borland compiler.
(fonts.txt, make.txt, new-user.txt, use.txt)
</pre><h3><a name="V4.50_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The Watcom library makefile didn't define the directory
information for libpng and zlib. (watclib.mak)
Moves the selection of band list implementation (file- vs. RAM-based) and
the compression filter for RAM-based band lists up to the top-level
makefiles. Again, this is a NON-BACKWARD-COMPATIBLE procedure change.
(lib.mak, *.mak)
Moves the selection of version number for all platforms (except VMS, as
usual) to a separate file. This will reduce the number of files that need
editing when the version number changes. (ansihead.mak, cc-head.mak,
gcc-head.mak, ugcclib.mak, version.mak, tar_cat)
</pre><h3><a name="V4.50_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- An error in the (unsupported) SGI RGB driver could cause crashes
or incorrect output. (gdevsgi.c)
Starts to create a framework for structured output ("vector") drivers (PDF,
PostScript, PCL XL, etc.) (gdevbbox.h, gdevvec.h, gsdcolor.h, gsstruct.h,
gxdevice.h, gdevvec.c)
Moves default page size parameters to a more accessible header. (gdevprn.h,
gxdevice.h, gdevx.c)
Adds a driver that produces properly structured PCL XL output. This is
highly experimental and not ready for use yet. (gdevpx.c)
</pre><h3><a name="V4.50_Platforms"></a>Platforms</h3><pre>
Removes support for 16-bit MS-DOS platforms with the Borland compiler. For
the moment, 16-bit MS Windows is still supported. (bc.mak, bcflags.mak,
bclib.mak, tc.mak)
</pre><h3><a name="V4.50_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- File-based CIDFonts (with delayed, incremental loading of
character outlines) didn't work. (gs_cidfn.ps)
Finishes implementing the definition of CMap resources, except for
rearranged fonts. (gs_cidfn.ps, gs_cmap.ps)
Adds a little more CMap support code. (zcid.c)
Removes the .setcurrentfile operator, since it doesn't solve the problem it
was intended to address. (zcontrol.c)
Adapts the interpreter to use the new argument processing code.
(imainarg.c)
</pre><h3><a name="V4.50_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The CCITTFaxDecode filter could access as much as 3 bytes beyond
the end of a buffer, causing an invalid memory access. (This is essentially
the same bug that was fixed for the CCITTFaxEncode filter in 4.38.)
(scfd.c)
</pre><h3><a name="V4.50_Library"></a>Library</h3><pre>
Fixes bugs:
- Painting an image without having set up any halftone could cause a
crash. (gxht.c)
- In a very obscure case, an occasional scan line of landscape
images could get corrupted. (gximage0.c)
- Because of a rounding error, patterns could fail to be painted in
certain cases. (gxpcolor.h, gspcolor.c, gxpcmap.c)
- Very large line widths or miter limits could cause the computation
of stroke expansion to overflow. (gxpaint.h, gdevbbox.c, gxclpath.c,
gxstroke.c)
- The phase could be incorrect for simple patterns. (gspcolor.c)
- The default implementation of copy_mono used an incorrect
RasterOp. (gdevdflt.c)
- The default implementation of fill_masked didn't increment the row
pointer, causing characters to appear as solid rectangular blocks.
(gxdcolor.c)
Eliminates an unnecessary gsave and grestore from rectfill and rectstroke if
the path was null. (gsdps1.c)
Adds a limit on the amount of space that the default (C heap) allocator will
allocate, and a record of the maximum amount allocated, to help testing
embedded products. (gsmemory.c)
Changes the band list algorithm for deciding how many replicas of a halftone
tile to store in the tile cache. The previous algorithm was too liberal,
which could cause the cache to overflow and many unnecessary bitmaps to be
written in the band list. (gxclbits.c)
Writes clipping with a rectangle more compactly in the band list.
(gxfixed.h, gxclpath.c)
Adds new band list commands for representing 90- and 180-degree arcs
compactly. (gxclpath.h, gxclpath.c, gxclread.c)
Repackages handling of general monochrome images, color images, and 12-bit
and interpolated images, so that they are included optionally rather than in
all configurations. (int.mak, lib.mak, gximage.h, gximage.c,
gximage[12345].c)
Changes the structure definition for devices to include no-op pointer
enumeration and relocation, so they can have subclasses. (gxdevice.h)
Adds a library facility for processing command line arguments with
@-expansion. (gsargs.h, gsargs.c)
</pre>
<hr>
<h2><a name="Version4.41"></a>Version 4.41 (private) (1/21/97)</h2>
<p>
This release adds a PCL XL output driver, and a few performance
improvements.
<h3><a name="V4.41_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The zlib library used an incorrect header file when compiling.
(zlib.mak)
Changes the names of the preprocessor symbols indicating the presence of
system header files to be consistent with the ones used by GNU configure.
(dvx-tail.mak, ugcclib.mak, unixtail.mak, vms.mak; dirent_.h, time_.h;
gp_unix.c)
Changes the method for choosing the compression filter for RAM-based band
lists. This is a NON-BACKWARD-COMPATIBLE change in the makefile. (lib.mak)
</pre><h3><a name="V4.41_Drivers"></a>Drivers</h3><pre>
Adds black-and-white and 8-bit gray PCL XL (PCL 6) drivers for the LaserJet
5 and 6 family. This driver is extremely simple and just emits bitmaps;
future drivers will use more PCL XL high-level constructs. (gdevlj56.c)
</pre><h3><a name="V4.41_Fonts"></a>Fonts</h3><pre>
Updates the free font distribution to add the URW Grotesk and Antiqua fonts.
</pre><h3><a name="V4.41_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- gs -h and -v returned with a non-zero exit code on all platforms.
(This is necessary under Windows, to keep the message visible on the screen,
but nowhere else.) (imainarg.c)
- Resizing a dictionary could exceed dict_max_size, causing memory
corruption. (dstack.h, idict.h, idict.c, zdict.c)
Adds .setlinecap and .setlinejoin that can use the extended range of line
cap/join values, and redefines setlinecap and setlinejoin in terms of them.
(gs_init.ps, zgstate.c)
</pre><h3><a name="V4.41_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The CCITTFaxDecode filter with EncodedByteAlign = true skipped to
a byte boundary before checking for an EOL. This may be wrong if EndOfLine
= true; we aren't at all sure what should happen if EndOfLine = false.
(scfd.c)
Adds a "no wrapper" option to the zlib streams, to optionally suppress the
time-consuming integrity checksum computation. (szlibx.h, szlibc.c,
szlibd.c, szlibe.c)
</pre><h3><a name="V4.41_Library"></a>Library</h3><pre>
Fixes bugs:
- Dashed lines with zero-length drawn segments (dots) that fell
exactly on a corner produced inappropriate output. (pcl/test19.pxs)
(gxpdash.c, gxstroke.c)
- Dashed lines didn't set the segment notes properly. (gxpdash.c)
- The bounding box device didn't free a bookkeeping structure at the
end of processing an image. (gdevbbox.c)
- Curve points could get computed incorrectly when using emulated
floating point. (gxpcopy.c)
- The 1-element cache for curve_x_at_y didn't work if Y was
decreasing. (gxfixed.h, gxpcopy.c)
Distinguishes between error and informational exits. (stdpre.h)
Defines and checks maximum values for line cap and join parameters.
(gslparam.h, gsline.c)
Removes the 'not last' segment note, since it is not used for anything.
(gxpath.h, gspath1.c, gxpath2.c, gxpcopy.c, gxpflat.c, gxstroke.c)
Changes the memory freeing algorithm for RAM-based band lists back to the
original one, since the "improved" one had more bugs than it was worth
chasing. (gxclmem.c)
Speeds up the A * B / C algorithm a little. (gsmisc.c)
Speeds up curve_x_at_y by recognizing more cases that don't require the slow
A * B / C algorithm. (gxpcopy.c)
Changes the path filling code so it uses fill-by-trapezoids even if
fill_adjust is zero, as long as the flatness is at least 1 pixel.
(gxfill.c)
Removes the (unneeded) floating point operations from gx_curve_log2_samples.
(gxpflat.c)
Changes the memory-based implementation of band lists so that it constructs
the compressor and decompressor by calling procedures rather than
instantiating templates: this allows setting filter parameters to
non-default values. (gxclmem.h, gxcllzw.c, gxclmem.c, gxclzlib.c)
</pre>
<h2><a name="Version4.40"></a>Version 4.40 (private) (1/13/97)</h2>
<p>
This version finally handles the last graphics model discrepancies between
PostScript and PCL, by correctly implementing null joins, minimum dot
lengths, and tangent-aligned curve ends. It also contains some significant
performance improvements, and as usual a few bug fixes.
<h3><a name="V4.40_Documentation"></a>Documentation</h3><pre>
Documents the new accurate curves and path dashing operators.
(language.txt)
</pre><h3><a name="V4.40_Utilities"></a>Utilities</h3><pre>
Adds switches for genconf to set and unset a prefix for file names.
(genconf.c)
</pre><h3><a name="V4.40_Drivers"></a>Drivers</h3><pre>
Adds recognition of the new Distiller 3.0 parameters to the PDF writer.
(None of them have any effect yet.) (gs_pdfwr.ps, gdevpdfx.h, gdevpdf.c,
gdevpdfp.c)
Converts all the output functions in the PDF writer from being file-based to
using streams, in anticipation of adding compression. (gdevpdfs.h,
gdevpdfx.h, gdevpdf*.c, gdevpdfs.c)
</pre><h3><a name="V4.40_Interpreter"></a>Interpreter</h3><pre>
Adds operators for accessing the new accurate curves flag in the graphics
state. (zgstate.c)
Adds an operator for invoking gs_dashpath. (zpath1.c)
</pre><h3><a name="V4.40_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Fixes bugs:
- Indexed color spaces whose base space was a CIE space caused an
error. (pdf_draw.ps)
</pre><h3><a name="V4.40_Library"></a>Library</h3><pre>
Fixes bugs:
- A pointer was declared const incorrectly. (gxcpath.c)
- Filling with a pattern often failed to pass a non-null bitmap ID,
causing excessive writing in the band list. (Performance bug only.)
(gspcolor.c)
- The bounding box device didn't discount copy_mono or draw_line
operations drawing in white. (gdevbbox.c)
- The bounding box device didn't read out the bounding box correctly
as the PageBoundingBox device parameter. (It did return it correctly
through the gx_device_bbox_bbox procedure.) (gdevbbox.c)
- The default implementation of fill_triangle drew nothing or
incorrect output if the corners of the triangle were specified in certain
orders (ax < 0 or bx < 0) (i.e., the previous "fix" had a bug).
(gdevddrw.c)
Changes tile size from always being set in all bands to being 'known' by
bands individually. (gxclist.h, gxcldev.h, gxclbits.c, gxclist.c)
Computes an additional value in advance when rendering images. (gximage.h,
gximage1.c, gximage2.c)
Replaces some slow loops with calls of memmove. (gxclmem.c)
Provides a fixed-point implementation of A * B / C for machines with slow
floating point. (gxfixed.h, gsmisc.c)
Extends the "device color" type to implement filling masked regions as well
as rectangles. (gxdcolor.h, gdevdflt.c, gspcolor.c, gxcht.c, gxdcolor.c,
gxht.c)
Makes unclipped monobit portrait and landscape images and image masks use
the new masked fill capability of device colors. (gximage.h, gximage.c,
gximage1.c, gximage2.c)
Adds a macro for determining pointer alignment. (stdpre.h, gdevdflt.c)
When floating point is slow, uses a different, faster algorithm for
gx_curve_x_at_y. (gxpcopy.c)
Improves performance by adding a one-element cache for gx_curve_x_at_y.
(gzpath.h, gxpcopy.c)
Reduces overhead when banded images are pre-rasterized (currently, always).
(gxclimag.c)
Adds a rendering cost estimate field to each band in a band list. This
field isn't actually used for anything yet; eventually, the intent is that
bands with a high cost will get rendered, and stored in compressed form,
before starting the engine. (gxclist.h)
Adds the concept of 'notes' for path segments, to allow remember what
segments constitute a single curve or arc. Currently we set these properly
for everything except dashed paths. (gxclpath.h, gxpath.h, gzpath.h,
gspath1.c, gxclpath.c, gxclread.c, gxpath.c, gxpath2.c, gxpcopy.c)
When the dot length is non-zero, changes curve stroking to always use bevel
joins within each curve rather than the current join. This prevents a
"bristly" look with no join and butt caps. (gxstroke.c)
Adds an "accurate curves" capability that makes the last line segment of a
flattened curve actually be tangent to the curve, which in turn makes
flat-end caps be correctly perpendicular to the tangent. (gxpath.h,
gxpcopy.c)
Adds an "accurate curves" flag in the graphics state. (gsline.h,
gxclpath.h, gxistate.h, gsline.c, gspath.c, gspath1.c, gxclpath.c,
gxclread.c, gxfill.c, gxstroke.c)
Changes the meaning of "no join" (gs_join_none) so that instead of producing
no join and butt caps, it produces whatever the current cap is. This is
compatible with the H-P definition. (gxstroke.c)
Implements non-zero dot length for dash patterns. (gxpdash.c)
Splits off the curve flattening algorithms into a separate file.
(gxpcopy.c, gxpflat.c)
</pre>
<hr>
<h2><a name="Version4.39"></a>Version 4.39 (limited) (1/1/97)</h2>
<p>
This version was created only to accompany a release of the PCL XL
interpreter. It was withdrawn the day after it was released, because the
tools used to produce it put the wrong files in the filesets.
<h3><a name="V4.39_Documentation"></a>Documentation</h3><pre>
Adds a more detailed description of the third-party ps_view viewer
interface. (new-user.txt)
Corrects an error in a reference to the PSLRM. (lib.txt)
Documents the change in .makeoperator. (language.txt)
Updates the FTP location of the zlib sources. (zlib.mak)
</pre><h3><a name="V4.39_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The Unix library makefile didn't include the necessary definitions
for libpng and zlib. (ugcclib.mak)
Allows selecting the compression filters for memory-based band lists in the
makefile. Makes zlib (deflate) the default compressor for memory-based band
lists. (lib.mak)
</pre><h3><a name="V4.39_Utilities"></a>Utilities</h3><pre>
Fixes bugs:
- prfont.ps wouldn't print unencoded characters in Type 42 fonts.
(prfont.ps)
</pre><h3><a name="V4.39_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- The H-P monochrome driver didn't put out enough initialization
commands at the beginning of each page to make each page printable
independently. (gdevdjet.c)
</pre><h3><a name="V4.39_Interpreter"></a>Interpreter</h3><pre>
Changes ref_stack_count_inline so it never does a procedure call.
(istack.h)
Changes .makeoperator so that operator procedures save the stack depths, and
restore the stack pointers (if possible) if the operator encounters an
error. This is a NON-BACKWARD-COMPATIBLE CHANGE; it requires rewriting the
'stop' and 'stopped' pseudo-operators (and, if there were any, any other
pseudo-operators that interact with the error handling machinery) in C.
(gs_init.ps, interp.c, zcontrol.c)
Adds recognition of the LeadingEdge, MediaClass, and RollFedMedia keys in a
page device dictionary, per the Adobe supplement for their version 2017
interpreter. This involves a NON-BACKWARD-COMPATIBLE change to the
(undocumented) .matchpagesize operator. (gs_setpd.ps, zmedia2.c)
Makes necessary changes for compatibility with the added parameters for the
zlib filters. (zfzlib.c)
</pre><h3><a name="V4.39_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The zlib encoder returned EOFC when it should have returned 0.
(szlibe.c)
Adds optional parameters and reset procedures for the zlib filters.
(szlibx.h, szlibc.c, szlibd.c, szlibe.c)
</pre><h3><a name="V4.39_Library"></a>Library</h3><pre>
Fixes bugs:
- Displaying characters with a non-standard RasterOp could cause an
invalid memory access. (gdevdflt.c)
- Banding sometimes used an incorrect RasterOp. (gxclread.c)
- When banding, mixing Patterns and halftones could confuse the
bookkeeping of tile size, leading to incorrect generation of the band list
and error messages or confusion when rasterizing. (gxclist.h, gxclbits.c,
gxclread.c)
- If only the dash pattern offset changed, and not any of the other
dash-related parameters, the new offset wasn't written in the band list,
causing incorrect output. (gxclpath.c)
- Oversized halftone tiles didn't report their error code properly.
(gxclbits.c)
- Oversized halftone tiles with RasterOp caused an error.
(gxclist.c)
- When banding, RasterOp transfers that crossed a band boundary
didn't access the correct source data on bands other than the first.
(gxclist.c)
- There were redundant copies of the code for writing a RasterOp
value in the band list. (gxclimag.c, gxclpath.c)
- Oversized patterns or halftones produced garbled output.
(gxclbits.c)
- The check for oversized patterns or halftones was slightly
incorrect, leading to the possibility of writing out a tile that would
overflow the reading buffer and corrupt memory. (gxclbits.c)
- When banding, RasterOp wasn't applied to fill and stroke
operations, and wasn't applied correctly to characters. (gdevdflt.c,
gxclimag.c, gxclread.c)
- The RasterOp-related optimizations for black-and-white images
sometimes produced incorrect output. (gximage.c, gximage2.c)
- The default implementation of fill_triangle didn't draw anything
if the corners of the triangle were specified in certain orders (ax < 0 or
bx < 0). (gdevddrw.c)
- Painting with a Pattern could pass out-of-range phase values to
driver procedures. (gspcolor.c)
- Because of an off-by-1 error, halftones or patterns passed through
the band list could write past the end of their allocated space in the band
tile cache, leading to incorrect output or possible arithmetic exceptions or
memory access errors. (gsbitops.c)
Adds -Z: for printing only the minimal command list statistics. (gxclist.c,
gxclread.c)
Expands band list tracing so it includes all of the data associated with the
command, not just the command name and a few command parameters.
(gxclread.c)
Adds free lists for strings. Currently these are only used in
non-garbage-collected environments. (gxalloc.h, gsalloc.c, gsnogc.c)
Adds a procedure for copying a path structure, and an (internal) accessor
for the current path in the graphics state. (gxpath.h, gspath.c, gxpath.c)
Speeds up filling characters with halftones a little bit. (gdevdflt.c)
Changes the memory-based implementation of band lists so it can use any
compression / decompression filter, so it only compresses when it has
allocated a specified amount of buffer storage, and so it releases its
buffer storage at the end of each page. (gxclmem.h, gxclmem.c)
Speeds up counting the number of 1-bits in a byte, which is used in some
image processing algorithms. (gsbittab.h, gsbittab.c)
Reduces the band list space required for changing tile size. (gxcldev.h,
gxclbits.c, gxclread.c)
</pre>
<h2><a name="Version4.38"></a>Version 4.38 (limited) (12/20/96)</h2>
<p>
Adds support for a couple of undocumented features in Type 1 fonts.
<h3><a name="V4.38_Interpreter"></a>Interpreter</h3><pre>
Adds handling of the Type 1 font subroutineNumberBias (an optional entry in
the Private dictionary) and lenIV = -1 features at the interpreter level.
(zchar1.c, zfont1.c)
</pre><h3><a name="V4.38_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The CCITTFaxEncode filter could access as much as 3 bytes beyond
the end of a buffer, causing an invalid memory access. (scfe.c)
Changes the RunLengthDecode filter so it can make progress (produce output)
with only a 1-byte output buffer. (srlx.h, srld.c)
</pre><h3><a name="V4.38_Library"></a>Library</h3><pre>
Fixes bugs:
- The sine and cosine of multiples of 90 degrees weren't exact.
(gxfarith.h, gsmisc.c)
- The expanded bounding box computation for strokes didn't take into
account the possibility of overflow. (gxstroke.c)
- The allocator didn't fill freed strings with the 'free' mark.
(gsalloc.c)
- When using a pattern with RasterOp, the phase was computed
incorrectly, leading to anomalous filling patterns. (gspcolor.c)
- Patterns with a non-zero translation in the matrix passed to
makepattern didn't translate the pattern origin properly. (gxcolor2.h,
gxpcolor.h, gspcolor.c)
Adds a subroutineNumberBias field to Type 1 fonts. This is an undocumented
feature of the Type 1 font format. (gxfont1.h, gstype1.c)
Interprets lenIV = -1 in Type 1 fonts as meaning that the CharStrings are
unencrypted. This too is an undocumented feature of the Type 1 format.
(gxfont1.h, gxtype1.h, gstype1.c, gstype2.c)
Changes gs_clippath so it returns more reasonable outlines. (There are too
many programs that rely on being able to stroke the result of clippath, even
though both the Adobe and H-P literature specifically say the results are
unpredictable.) (gxcpath.h, gxcpath.c)
</pre>
<h2><a name="Version4.37"></a>Version 4.37 (limited) (12/10/96)</h2>
<p>
This version implements separate halftone phase for source and texture,
required for PCL XL implementation.
<h3><a name="V4.37_Fonts"></a>Fonts</h3><pre>
Fixes bugs:
- Loading a native TrueType font without a 'post' table caused an
error. (gs_ttf.ps)
</pre><h3><a name="V4.37_Interpreter"></a>Interpreter</h3><pre>
Extends the interpreter to handle the new separate halftone phases for the
RasterOp source and texture. (gs_dps1.ps, zdps1.c)
Makes a small change to accommodate a library change supporting Type 2
charstrings. (zfont1.c)
</pre><h3><a name="V4.37_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Implements the FontFile2 key for embedded TrueType fonts. (pdf_font.ps)
Starts to implement the FontFile3 key for compressed Type 1 fonts. This
code is currently disabled, because none of the necessary underlying C is
written yet. (pdf_font.ps)
</pre><h3><a name="V4.37_Library"></a>Library</h3><pre>
Fixes bugs:
- The floating point emulator often returned incorrect results (too
many bugs to list). (This is not used in any standard configuration.)
(gsfemu.c)
- The new copy_for procedure for gstates incorrectly declared an
argument as const. (gxstate.h, gsstate.c)
- If a curve had to be split twice along the same axis to make it
monotonic, the split points could still be returned in the wrong order,
possibly causing curved edges to turn into straight lines, and the algorithm
still produced the wrong results if the curve had to be split twice along a
single axis. This is the second time we have "fixed" these problems and the
4th time we have "fixed" the curve monotonizing algorithm. (gxpcopy.c)
- Setting halftones cause a memory leak, because the subsidiary
objects of the device halftone weren't freed properly. Fixing this required
changing the graphics state implementation from allocating a device halftone
for each gstate to managing the device halftone with reference counting.
(gxdht.h, gzstate.h, gsht.c, gsstate.c)
Provides an optimized version of ldexp for FPU-less configurations, and
changes one key algorithm to use it. (gxfixed.h, gsmisc.c, gxpcopy.c)
Speeds up imagemask with a halftone a little. (This will eventually require
more serious optimization.) (gximage2.c)
Adds a -Z* switch for tracing varieties of image rendering. (gximage.c)
Recognizes that if the logical operation is equivalent to D = S (after
accounting for a constant texture, if any), or if it is equivalent to D = ~S
or D = D {&,|}{S,~S} and D and S are both monobit and both colors are pure,
imaging with RasterOp can be executed without invoking RasterOp. (gsropt.h,
gximage.c)
Makes coordinate transformations with landscape matrices execute as fast as
with portrait matrices. (gxmatrix.h, gscoord.c, gsmatrix.c)
Adds some sketch code for interpreting Type 2 charstrings. It compiles, but
it makes no pretense of being runnable. (gstype1.h, gxop1.h, gxtype1.h,
gstype2.h, gxfont1.h, gstype1.c, gstype2.c)
Extends the library to allow setting separate halftone phases for the
RasterOp source and texture, which is needed to implement halftone screens
that behave like those in H-P's PCL XL printers. (gscsel.h, gsstate.h,
gxcmap.h, gxcspace.h, gxdcolor.h, gxdither.h, gxpcolor.h, gzht.h, gzstate.h,
gscie.c, gscsepr.c, gsht.c, gspcolor.c, gxcht.c, gxcmap.c, gxdcolor.c,
gxht.c, gximage.c, gximage[2345].c, gspcmap.c) ****** STILL NEED TO UPDATE
BANDING CODE, grep FOR phase ******
Removes the rc_header member from the gs_halftone structure, since we don't
need it after all. (gxht.h)
</pre>
<h2><a name="Version4.36"></a>Version 4.36 (limited) (12/3/96)</h2>
<p>
This version fixes a number of library bugs related to RasterOp, Patterns,
and memory management.
<h3><a name="V4.36_Documentation"></a>Documentation</h3><pre>
Changes the definition of texture transparency to match the peculiar H-P
specification. (drivers.txt, language.txt)
</pre><h3><a name="V4.36_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- x_get_bits didn't flush updates to the frame buffer, leading to
possibly incorrect data being returned. (gdevx.c)
- x_get_bits added padding to the scan line being copied, possibly
corrupting memory. (gdevx.c)
Changes the x11mono driver to define white = 0, black = 1 to more closely
model black-and-white printers. (This is an internal change that doesn't
affect the output.) (gdevxalt.c)
</pre><h3><a name="V4.36_Interpreter"></a>Interpreter</h3><pre>
Removes some code that is no longer needed, by virtue of the fix for the
memory leak in Pattern remapping. (zpcolor.c)
</pre><h3><a name="V4.36_Library"></a>Library</h3><pre>
Fixes bugs:
- Patterns wider than 1024 bits caused a rangecheck. (gxclip2.h,
gxclip2.c)
- Dash patterns never got freed. The fix for this slows down gsave
and grestore slightly, but we don't see any way around it. (gsline.c,
gsstate.c)
- If the CTM was very non-uniform in X and Y, stroke sometimes
didn't recognize thin lines as being thin, leading to dropouts.
(gxstroke.c)
- RasterOps that didn't use S or T still took S or T transparency
into account. (gdevmrop.c)
- RasterOps with no source didn't handle the possibility that the
device color for black might have a value other than 0. (gxdcolor.h,
gspcolor.c, gxcht.c, gxdcolor.c, gxht.c)
- White pixels in halftones on black-and-white devices apparently
are *not* supposed to be treated as opaque for RasterOp. (gxcht.c, gxht.c)
- clippath caused memory to be lost until a restore or a garbage
collection. (gspath.c)
- Clipping lists weren't ever freed, and clipping paths sometimes
weren't freed, causing memory to be lost until a restore or a garbage
collection. (gzacpath.h, gxacpath.c, gxcpath.c)
- Freeing a pattern instance referenced a pointer after it had been
freed, causing an invalid memory access. (gspcolor.c)
- Remapping a Pattern color lost track of the temporary gstate,
memory devices, and possibly the mask, causing memory to be lost until a
restore or GC. (gxpcolor.h, gxpcmap.c)
- Remapping a Pattern color could cause paths to be marked as
shared, preventing them from being freed until a restore or GC. (gxpcmap.c)
Enhances the non-tracing garbage collector so that if there are no strings
allocated at all, it resets the string allocation pointers. (gsnogc.c)
Optimizes the black-and-white RasterOp implementation by recognizing cases
that can be implemented directly by fill_rectangle, copy_mono, or
tile_rectangle. (gdevmrop.h, gsropt.h, gdevmrop.c, gsroptab.c)
Changes -ZA so it no longer produces [P] tracing messages for path
construction. (gxpath.c)
Adds a gx_pattern_cache_winnow procedure for selectively removing entries
from the Pattern cache, similar to gx_purge_selected_cached_chars.
(gscolor2.h, gxpcolor.h, gxpcmap.c)
Adds the Pattern UID to Pattern cache entries. (gxpcolor.h, gxpcmap.c)
****** MUST HANDLE XUID POINTERS ON GC (RELOC) & RESTORE (CLEAR LIKE HT
CACHE) ******
Makes gs_gstate free the path representation of the clipping path if it's a
rectangle, since reconstructing it is cheap and otherwise the path segments
would not be freeable until a restore or GC. (gsstate.c)
Extends the "client data" interface for gstates so that the copy procedure
can determine why it is being called. (gxstate.h, gsstate.c)
</pre>
<h2><a name="Version4.35"></a>Version 4.35 (limited) (11/24/96)</h2>
<p>
This contains the usual bug fixes, and two minor enhancements: an option for
handling EPSF files with binary headers, and support for file-based
resources.
<h3><a name="V4.35_Documentation"></a>Documentation</h3><pre>
Documents the new EPSF-reading capability. (gs.mak)
</pre><h3><a name="V4.35_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- Some obsolete definitions were accidentally left in the rules for
compiling fonts into the executable. (int.mak)
</pre><h3><a name="V4.35_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- initgraphics left the current color space in an inconsistent
state. (bug introduced in 4.32) (zgstate.c)
- restore didn't properly rebind FontDirectory to either Local or
SharedFontDirectory according to the current VM selection. (gs_dps1.ps)
- If FontDirectory was redefined, many things broke. (gs_ccfnt.ps,
gs_dps1.ps, gs_fonts.ps, gs_pdfwr.ps)
- If a resource provided a file name but the file couldn't be
opened, an error occurred. (gs_res.ps)
- flushfile didn't work with procedure-based streams. (zfileio.c)
Adds a feature (epsf.dev) that allows the interpreter to recognize and
handle MS-DOS EPSF files with a binary header. (int.mak, gs_epsf.ps,
gs_init.ps, pdf_main.ps)
Adds (internal) .getuserparam and .getsystemparam operators for getting the
value of a single user or system parameter. (gs_lev2.ps, zusparam.c)
To support file-based resources, implements the FontResourceDir,
GenericResourceDir, and GenericResourcePathSep system parameters, and
ResourceFileName for the built-in resource categories. (gs_init.ps,
gs_lev2.ps, gs_res.ps)
</pre><h3><a name="V4.35_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The 2-D CCITTFaxDecode filter became confused if a buffer boundary
fell between a horizontal make-up code and its terminating code, typically
causing an ioerror. (scfd.c)
</pre><h3><a name="V4.35_Library"></a>Library</h3><pre>
Fixes bugs:
- Using the null color could confuse the reference counts for color
spaces, causing memory access errors. (gscolor.c)
- Images with CombineWithColor = true caused memory access error,
because a structure element wasn't initialized. (gdevmrop.c)
- gs_setnullcolor tried to return an error code, even though it was
declared as returning void. (Why doesn't gcc catch this??) (gscolor.h,
gscolor.c)
- gs_setnullcolor was declared inconsistently as taking a const or
non-const argument. (gscolor.h)
- Small color tiles in the band list were not read in correctly.
(gxclread.c)
- The band list could get confused, causing ioerrors, invalid memory
accesses, or garbled output, because the algorithms for computing the size
of bitmaps when writing and when reading had gotten inconsistent. This code
has been broken and "fixed" at least 4 or 5 times. (gxcldev.h, gxclbits.c,
gxclread.c)
- When using banding, characters that extended off the page
vertically in the -Y direction came out garbled. (gxclimag.c)
- The bounding box device didn't compute the box correctly for
trapezoids. (gdevbbox.c)
- The fastest case of rendering monochrome images could cause
unaligned data accesses. (bug introduced recently.) (gximage.h,
gximage1.c)
- TrueType characters with no contours could cause an invalid memory
access. (gstype42.c)
- Composite TrueType characters weren't rendered properly.
(gstype42.c)
Adds a get_outline procedure to the Type 42 font header, to provide a
callback for getting the outline data for a glyph. (gxfont42.h, gstype42.c)
</pre>
<h2><a name="Version4.34"></a>Version 4.34 (limited) (11/18/96)</h2>
<p>
This release adds a little more support for CID-keyed fonts and for PCL
emulation, and a bit more of the machinery for passing images through the
band list.
<h3><a name="V4.34_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- The RasterOp source device wasn't listed as an internal device in
drivers.txt. (drivers.txt)
Corrects a statement regarding the pstotext license. (new-user.txt)
</pre><h3><a name="V4.34_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The Watcom makefile for the library didn't work properly if
certain variables were overridden from the command line. (watclib.mak)
- The library code inadvertently depended on an interpreter header
file. (*.mak)
</pre><h3><a name="V4.34_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- Some very picky compilers complained about assigning 0 to a
variable of an enum type. (gdevpdfx.h, gdevpdf.c)
</pre><h3><a name="V4.34_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- Some very picky compilers didn't like a cast from a pointer type
to an int type. (idebug.c)
- Some very picky (and non-ANSI-compliant) compilers didn't allow
assigning an int to a variable of enumerated type. (zfont2.c, zht2.c)
- The library code inadvertently depended on an interpreter header
file. (iref.h)
Restructures the font building code slightly to support CID fonts better.
(gs_cidfn.ps, bfont.h, zcid.c, zfont0.c, zfont1.c, zfont2.c, zfont42.c)
Adds a .setcurrentfile operator to allow disk-based fonts to keep their file
open. (gs_cidfn.ps, zcontrol.c)
</pre><h3><a name="V4.34_Streams"></a>Streams</h3><pre>
Fixes bugs:
- Some very picky compilers didn't like the computation (const byte
*)0 - 1. (stream.c)
- A cast to ulong was omitted. (smtf.c)
- Some compilers got confused by typedefs in the zlib header files.
(szlibd.c, szlibe.c)
</pre><h3><a name="V4.34_Library"></a>Library</h3><pre>
Fixes bugs:
- A header file didn't select the proper system header on all POSIX
systems. (malloc_.h)
- A subclass/superclass type discrepancy upset some compilers.
(gsline.h, gsline.c, gxpdash.c)
- Some very picky compilers didn't accept the previous definition of
the offset_of macro. (stdpre.h)
- Some very picky (and non-ANSI-compliant) compilers didn't like
mixing int and enumerated types. (gsropt.h, gzstate.h, gdevmrop.c,
gdevrrgb.c, gsrop.c, gxclist.c)
- A cast was missing. (gslib.c)
- The gs_setxxxtransparent procedures interpreted their argument
backwards (i.e., as "opaque" rather than "transparent"). (gsrop.c)
- Intersecting clipping paths didn't reset the logical operation to
the default, causing a possible crash. (gsrop.h, gsrop.c, gxacpath.c)
- Pattern accumulation didn't reset the logical operation to the
default, possibly causing incorrect output. (gspcolor.c)
- If a Type 1 character ended with a curve and a closepath, a
microscopic line could result, causing output anomalies. (gstype1.c)
- Stroking a path with a mix of thin and non-thin lines could cause
extraneous lines to appear. (gxstroke.c)
- Zero-width rectangles were painted even when fill adjustment was
turned off. (gxpaint.c, gxstroke.c)
- The algorithm for dividing a curve into monotonic pieces could
produce incorrect results, causing anomalies when filling curved regions
with zero fill adjustment. (gxpcopy.c)
- The algorithms for outside clipping were wrong, causing some
inside regions not to be clipped. (gxcpath.c)
- The white pixels in halftones weren't treated as unconditionally
opaque for RasterOp. (gxht.c, gxcht.c)
- Images with RasterOp didn't work properly. (gdevmrop.c,
gximage[2345].c, gxpcmap.c)
- The library code inadvertently depended on an interpreter header
file. (gxalloc.h, genarch.c)
- An important optimization for stroking (recognizing portrait,
landscape, and unscaled CTMs) was commented out. WE DON'T HAVE ANY RECORD
OF WHY WE DID THIS, AND RESTORING IT MAY INTRODUCE NEW BUGS. (gxstroke.c)
- Bitmap images with non-zero data_x values were passed through the
band list incorrectly, possibly causing vertical "streaks" in the output.
(gxcldev.h, gxclread.c)
- If a curve had to be split twice along the same axis to make it
monotonic, the split points were returned in the wrong order, possibly
causing curved edges to turn into straight lines. (gxpcopy.c)
Changes the debugging printout format for paths so the output can be
processed mechanically more easily. (gxpath.c)
Adds gs_glyphpath, like charpath but taking a glyph rather than a string of
character codes. (gschar.h, gschar.c)
Adds an internal concept of a "null color", a color that doesn't actually
mark any pixels. (gscolor.h, gsdcolor.h, gxdcolor.h, gscolor.c, gxdcolor.c)
Takes the next incremental steps towards passing images through the band
list:
- Implements the ability to pass some color mapping information
(transfer functions, black generation, undercolor removal) through the band
list. (gxclist.h, gxclimag.c, gxclist.c, gxclread.c)
</pre>
<h2><a name="Version4.33"></a>Version 4.33 (limited) (11/6/96)</h2>
<p>
This release fixes yet another obscure bug in the recently rewritten fast
loops for image rendering. (These loops have caused more problems than any
other single module of the entire library.) It also adds preliminary
support for CID-keyed fonts (CIDFonts only, not CMaps yet) and some library
extensions for supporting HP-GL/2.
<h3><a name="V4.33_Documentation"></a>Documentation</h3><pre>
Adds considerable new material to the C style document. (c-style.txt)
Changes -cckr to -ansi in the SGI build procedure. (make.txt)
Corrects an error in the description of the .type42execchar operator.
(gs_typ42.ps)
</pre><h3><a name="V4.33_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The 'man' pages were installed in the documentation directory as
well as in the man directory. (unix-end.mak)
</pre><h3><a name="V4.33_Interpreter"></a>Interpreter</h3><pre>
Adds support for CID-keyed fonts. There is no CMap support yet, and some
things are done with hacks. (int.mak, gs_cidfn.ps, gs_cmap.ps, ichar.h,
zchar.c, zchar2.c, zchar42.c, zfont2.c, zfont42.c, zcid.c)
Adds operators for accessing the new dash adaptation and dot length
parameters in the graphics state. (gs_init.ps, zgstate.c)
</pre><h3><a name="V4.33_Library"></a>Library</h3><pre>
Fixes bugs:
- The fast case of monobit image rendering could overwrite memory.
(gximage1.c)
- The new fast implementation of rectfill didn't check for
fixed-point overflow. (gsdps1.c)
- Internally, fonts with no name all appeared to have the same name,
possibly confusing the xfont machinery. (gxccman.c)
- A cast to remove const was omitted, upsetting some compilers.
(gximage1.c)
- The driver's stroke_path routine was not called if the logical
operation was not the default one. (gxpaint.c)
Adds support for CID-keyed fonts. (gsccode.h, gxfont.h)
Adds a new "dash pattern adaptation" flag in the imager state. When this
flag is set and a dash pattern is in effect, each line segment will receive
an integral number of repetitions of the dash pattern (if necessary, rounded
up). (gsline.h, gxline.h, gsline.c, gsstate.c, gxpdash.c)
Adds a new "dot length" parameter to the imager state. If this parameter is
non-zero, it gives a length for rendering dots (zero-length lines). See
language.txt for details. (gsline.h, gxline.h, gsline.c, gsstate.c,
gxstroke.c)
Extends band lists so they can handle dash pattern adaptation and dot
length. (gxcldev.h, gxclpath.h, gxclpath.c, gxclread.c)
Adds a floating point emulator to allow more realistic profiling of
configurations without a FPU. (gsfemu.c)
</pre>
<h2><a name="Version4.32"></a>Version 4.32 (limited) (11/1/96)</h2>
<p>
This fixes a couple more bugs, most notably the infamous "pixel stripe" bug.
<h3><a name="V4.32_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- The documentation said that Ghostscript could not interpret
encrypted PDF files. (language.txt)
- A number of Ghostscript's extensions to the PostScript language
were missing. (language.txt)
</pre><h3><a name="V4.32_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- A compiler complained about initializing an unsigned variable with
a negative value. (gdevx.c)
- An off-by-1 allocation error could cause memory overwriting.
(gdevepsc.c)
</pre><h3><a name="V4.32_Platforms"></a>Platforms</h3><pre>
Declares a pointer 'const' that is actually only used for reading.
(gp_unifs.c)
</pre><h3><a name="V4.32_Fonts"></a>Fonts</h3><pre>
Fixes bugs:
- The code for adding nominal UnderlinePosition and
UnderlineThickness entries to FontInfo assumed (incorrectly) that all Type 1
fonts had FontBBox entries. (gs_type1.ps)
Brings CIDFont support closer to reality. It doesn't work yet, though.
(gs_cidfn.ps, gs_fonts.ps, gs_init.ps, gs_res.ps, gs_typ42.ps)
</pre><h3><a name="V4.32_Interpreter"></a>Interpreter</h3><pre>
Removes a redundant implementation of initgraphics. (gs_init.ps)
Speeds up rectfill a little for the common case (4 numbers on the stack).
(zdps1.c)
</pre><h3><a name="V4.32_Library"></a>Library</h3><pre>
Fixes bugs:
- Zero-width, 1-bit-deep, landscape or portrait images could
overwrite memory ad lib. (gximage1.c)
- A procedure was declared 'static' inconsistently, upsetting many
compilers (but not gcc, which, in contradiction to the ANSI standard,
doesn't check this properly). (gxcpath.c)
- A local variable was initialized with a value computed from a
variable that hadn't been set yet, leading to possibly incorrect coloring of
the first run of pixels in images with 12 bits per sample. (gximage4.c)
- A compiler complained about initializing an unsigned variable with
a negative value. (shcgen.c)
- A rounding problem could produce a vertical stripe of 1 (or on
very large images possibly more) incorrect pixels at the right edge of a
1-bit-deep image. (gxdda.h, gximage1.c)
Speeds up gs_rectfill substantially for the portrait/landscape case with a
rectangular clipping region. (gsdps1.c)
Adds a parameter so we can include gx_line_params in subclasses. (gzline.h)
</pre>
<h2><a name="Version4.31"></a>Version 4.31 (limited) (10/27/96)</h2>
<p>
This is primarily a bug fix release for 4.30, which we had hoped wouldn't be
necessary....
<h3><a name="V4.31_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- The comment describing the order of coefficients in a CTM written
on the band list was wrong. (gxclpath.h)
</pre><h3><a name="V4.31_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- bug-form.txt wasn't installed by 'make install'. (unix-end.mak)
- The default flags in ugcclib.mak didn't take the gcc code
generation bug into account. (ugcclib.mak)
</pre><h3><a name="V4.31_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- MetroWerks CodeWarrior predefines true and false, causing
compilation errors on the Mac. (stdpre.h)
</pre><h3><a name="V4.31_Interpreter"></a>Interpreter</h3><pre>
Updates code for the change in the ENUM_PTR macros. (iscan.c)
Changes the allocator to keep track of "lost" ref space separately, to allow
an independent check on its activities. (gxalloc.h, ialloc.c, isave.c)
Changes the garbage collector API slightly to allow implementation of the
API in applications other than PostScript interpreters. (ivmspace.h,
ireclaim.c, igc.c)
</pre><h3><a name="V4.31_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Implements the PDF 1.1 BX and EX operators. (pdf_base.ps, pdf_main.ps)
</pre><h3><a name="V4.31_Streams"></a>Streams</h3><pre>
Fixes bugs:
- Some (harmless) pointer incompatibilities upset some compilers.
(szlibd.c, szlibe.c)
Updates code for the change in the ENUM_PTR macros. (stream.c)
</pre><h3><a name="V4.31_Library"></a>Library</h3><pre>
Fixes bugs:
- A label in the ENUM_PTR procedure generating macros was often not
referenced, leading to compiler warnings. (gsstruct.h, gxxfont.h,
gdevmem.c, gschar.c, gscolor2.c, gsdevice.c, gsfont0.c, gsht.c, gsstate.c,
gxcpath.c, gximage.c)
- Using the gstate version of setflat rather than the imager version
caused compiler warnings (and, in some cases, errors). (gstype1.c)
- Non-standard ImageMatrix values for banded images didn't work.
(This wasn't actually used.) (gxclread.c)
- imagemask with a halftone and portrait orientation colored some
inappropriate pixels. (bug introduced in 4.30) (gximage2.c)
- When banding, if a character straddled a band boundary the first
time it occurred, all occurrences of it were clipped. (bug introduced in
4.2x or 4.30) (gxclimag.c)
- Degenerate clipping rectangles sometimes got turned into
non-degenerate ones by swapping the min and max coordinates. (gxcpath.c)
- Resizing an object either allocated a new object unnecessarily
(performance bug only), or in very rare cases could corrupt memory.
(gsalloc.c)
- Very small objects didn't get put on a free list when freed.
(Performance bug only.) (gsalloc.c)
- Some pointers were incorrectly declared 'const', upsetting some
compilers. (gxclread.c)
Adds more tracing output for -ZL. (gxclread.c)
Changes the -Za tracing output slightly to aid mechanical analysis of
allocation traces: allocation events now always include a '+', deallocation
events always include a '-', and the address is always the address of the
object data and not the header. (gsalloc.c, gsmemory.c)
Changes the allocator to keep track of "lost" object and string space
separately, to allow an independent check on its activities. (gxalloc.h,
gsalloc.c)
Changes the allocator to use 'memmove' in an obvious place. (gsalloc.c)
Provides a garbage collector API at the library level to allow
implementation of the API in applications other than PostScript
interpreters. (gsgc.h)
</pre>
<h2><a name="Version4.30"></a>Version 4.30 (limited) (10/23/96)</h2>
<p>
The main purpose of this release is to implement a substantial change in the
"high level" image API, after which we believe this API will be stable.
<h3><a name="V4.30_Documentation"></a>Documentation</h3><pre>
Documents the changes in the begin_image and image_data device procedures.
(drivers.txt)
</pre><h3><a name="V4.30_Drivers"></a>Drivers</h3><pre>
Speeds up the PDF writer a little by reducing the amount of allocation,
which was causing very frequent garbage collections. (gs_pdfwr.ps,
gdevpdft.c)
Updates the PDF writer for the change in begin_image/image_data.
(gdevpdfi.c)
</pre><h3><a name="V4.30_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- Some versions of the SGI IRIX compiler have a bug that causes them
to try to expand macros that require arguments even when the macro name
isn't followed by a left parenthesis. (gdevsgi.h, gdevsgi.c)
- The IBM RS6000 compilers now provide <stdlib.h>, so our
definitions of malloc and free caused a conflict. (malloc_.h)
</pre><h3><a name="V4.30_Fonts"></a>Fonts</h3><pre>
Fixes bugs:
- Many Fontmaps included obsolete references to an old
Helvetica-Narrow font. (Fontmap.*)
Makes the GS_FONTPATH directory scanner a little more liberal about what
files it examines: it will now examine any file whose first line begins with
%!PS-Adobe or %!FontType. (gs_fonts.ps)
To match an apparent Adobe convention, augments findfont so that if a font
isn't in the Fontmap, it will try to load a file whose name is the same as
the font name. (gs_fonts.ps)
To make some questionable Apple font inquiry code work, augments the
FAKEFONTS facility so that it sets the FontType of fake fonts to 1.
(gs_fonts.ps)
</pre><h3><a name="V4.30_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- .checkpassword, .putdeviceparams, .putdevparams, setsystemparams,
and setuserparams didn't free the results byte array, causing a memory leak
(until the next garbage collection). (zdevice.c, ziodev.c, zusparam.c)
</pre><h3><a name="V4.30_Library"></a>Library</h3><pre>
Fixes bugs:
- The code for emulating floating point multiplication with
conversion to fixed point didn't detect overflow correctly, which could
produce incorrect results instead of a limitcheck. (gsmisc.c)
- A macro cast a pointer incorrectly, leading to spurious compiler
warnings. (gxfixed.h)
- The code for emulating fixed-to-float conversion computed the
exponent incorrectly. (gsmisc.c)
- The algorithm for advancing a DDA a given number of steps (not
actually used anywhere before this version) was wrong. (gxdda.h)
- The clipping box returned by clipping devices was incorrect,
causing parts of the page to disappear. (bug introduced in 4.20)
(gxcpath.c)
Changes the begin_image and image_data device procedures:
- begin_image now takes an optional subrectangle instead of a set of
shape flags.
- image_data now always takes complete rows of pixels, takes a
source X offset, and returns 1 when it has received all the data.
The change in begin_image and image_data is a NON-BACKWARD-COMPATIBLE CHANGE
IN A PUBLIC INTERFACE; however, this interface was still designated "subject
to change", per the notes for release 3.67 and the documentation in
drivers.txt. (gsiparam.h, gxclpath.h, gxdda.h, gxdevice.h, gximage.h,
gdevbbox.c, gdevnfwd.c, gsimage.c, gxclimag.c, gxclread.c, gximage.c,
gximage?.c)
</pre>
<hr>
<h2><a name="Version4.21"></a>Version 4.21 (limited) (10/17/96)</h2>
<p>
The purpose of this release is to fix bugs reported in 4.0x, 4.10, and 4.20.
<h3><a name="V4.21_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- The Ghostscript man page had a .TH in the middle. (gs.1)
</pre><h3><a name="V4.21_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- The shared version of zlib was always called libgz; on most
systems, it is now called libz (but not on Red Hat Linux, where libz is a
library for dealing with time zones). (*.mak, gs.mak, libpng.mak, zlib.mak)
- The pdf2dsc.1 man page wasn't installed on Unix systems.
(unix-end.mak)
- font2c generated procedures named gsf_xxx, but genconf assumed
they were named gs_f_xxx. (int.mak)
</pre><h3><a name="V4.21_Drivers"></a>Drivers</h3><pre>
Updates the user-contributed LBP-8II driver to correct unspecified problems.
(gdevlbp8.c)
Adds a user-contributed driver for Avance Logic SuperVGA cards.
(gdevsvga.c, devs.mak)
</pre><h3><a name="V4.21_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- On Windows NT, a 32-bit parameter was truncated to 16 bits,
preventing drawing of scroll bars of the image window when the window is
uncovered. (dwimg.cpp)
</pre><h3><a name="V4.21_Fonts"></a>Fonts</h3><pre>
Fixes bugs:
- The free URW Grotesk and Antiqua fonts were omitted from the
distribution.
</pre><h3><a name="V4.21_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- Defining a new global instance of a built-in resource
(ColorRendering, ColorSpace, Form, Halftone, Pattern, ProcSet) caused an
invalidaccess error. (gs_res.ps)
- pathbbox with no current path left an extra item on the stack when
the error occurred. (gs_init.ps)
- findresource for an undefined resource instance didn't preserve
the contents of the stack. (gs_res.ps)
Adds a new file providing a procedural interface with a very rudimentary
form of job encapsulation. (gserver.c)
Changes the initial value of MaxOpStack to 20000, for the sake of a few
badly-behaved files. (gs_init.ps, pdf_base.ps)
</pre><h3><a name="V4.21_Library"></a>Library</h3><pre>
Fixes bugs:
- If the image operators failed to allocated their bookkeeping
structure, the result was a crash rather than VMerror. (gximage.c)
- gx_default_fill_triangle (currently used only to implement the
fastest case of stroke) had a typo that could cause a numeric exception or
incorrect output, and another typo that could produce incorrect output.
(gdevddrw.c)
- When banding, if the first occurrence of a character fell partly
off the page, all occurrences of that character on the page could be clipped
or mangled. (gxclbits.c, gxclimag.c)
- When testing whether it's worthwhile compressing a bitmap for
banding, the compressor was allowed to generate a lot more output than
needed to make the test. (gxclbits.c)
- Certain cases of unrotated gray-scale images dropped the first or
last pixel of each scan line. (gximage2.c)
- In rare cases, a run of pixels in a image could get erroneously
displayed in the same color as the previous run, because of a cache
bookkeeping bug. (gximage3.c)
- The sample driver for the library had gotten inconsistent with a
header file. (gslib.c)
- A declaration was followed by an extraneous semicolon, which upset
some compilers. (gxht.h)
- Missing parentheses caused a test for thin lines to be incorrect.
(gxstroke.c)
</pre>
<h2><a name="Version4.20"></a>Version 4.20 (limited) (10/13/96)</h2>
<p>
This release has internal changes for future support of banded image
processing, but no externally visible changes. Its primary purpose is to
incorporate speedups for clipped images. It does *not* incorporate fixes
for all problems reported in 4.0x or 4.10.
<h3><a name="V4.20_Documentation"></a>Documentation</h3><pre>
Documents the new get_clipping_box device procedure. (drivers.txt)
</pre><h3><a name="V4.20_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- There were many, many minor inconsistencies between the makefiles
and the source code. (We finally have an automated tool to detect these.)
(devs.mak, int.mak, lib.mak, unixtail.mak; gsutil.c, zwppm.c)
- Some makefile rules weren't properly terminated by a blank line.
(lib.mak)
</pre><h3><a name="V4.20_Utilities"></a>Utilities</h3><pre>
Fixes bugs:
- The comments in gslp.ps had gotten out of date. (gslp.ps)
Adds --no-eject-file and --no-eject-formfeed switches to gslp.ps, to allow
packing files in multi-column printouts. (gslp.ps)
</pre><h3><a name="V4.20_Drivers"></a>Drivers</h3><pre>
Adds a user-contributed driver for the Epson LP-8000 laser printer.
(gdevlp8k.c)
Adds a DisplayMode parameter to the vgalib device. (gdevvglb.c)
Removes the requirement of typing a character at the end of each page using
the vgalib driver. THIS IS A USER-VISIBLE, NON-BACKWARD-COMPATIBLE CHANGE.
(gdevvglb.c)
</pre><h3><a name="V4.20_Interpreter"></a>Interpreter</h3><pre>
Updates code to accommodate the new get_clipping_box device procedure.
(zupath.c)
</pre><h3><a name="V4.20_Library"></a>Library</h3><pre>
Fixes bugs:
- When a CTM was passed through the band list, it didn't get
translated to match the band coordinate system. (This had no effect,
because the translation part of the CTM was never used.) (gxclread.c)
Adds a ',' debugging switch to disable high-level operations when banding.
(gxclpath.c)
Adds an optional get_clipping_box device procedure, so that filling and
stroking can clip more aggressively. (gdevmem.h, gdevprn.h, gxdevice.h,
gxpaint.h, gxpath.h, gzacpath.h, gdevdflt.c, gdevht.c, gdevnfwd.c,
gxacpath.c, gxclip2.c, gxclist.c, gxcpath.c, gxpcmap.c, gxfill.c,
gxstroke.c)
Speeds up clipped filling and stroking, by checking against the device
clipping box. (gxfill.c, gxstroke.c)
Adds the ability to clip with a rectangle a clipping path being accumulated,
and uses it to do more aggressive clipping when banding. (gzacpath.h,
gxacpath.c, gxclread.c)
Speeds up clipping of objects lying partly above or below the clipping
region. (gxcpath.c)
Speeds up clipping vertically-oriented objects (such as 90 degree rotated
images or vertical rectangles) with convex clipping regions, by checking for
vertical rectangles contained in multiple clipping rectangles. (gxcpath.c)
Speeds up the handling of 90 degree rotated gray-scale images. (gximage2.c)
Enhances the band list so that it can contain commands for a range of bands,
not just a single band or all bands. (gxcldev.h, gxclist.h, gxclbits.c,
gxclist.c, gxclread.c)
Adds an operation to the DDA structure, for eventual support of clipped
images. (gxdda.h)
Factors out some macros useful for generating bit-transformation tables.
(gsbittab.h, gsbittab.c, gsflip.c)
</pre>
<hr>
<h2><a name="Version4.10"></a>Version 4.10 (limited) (9/25/96)</h2>
<p>
This release adds local garbage collection, and a number of performance
improvements for garbage collection in general. We will support it for one
or two OEMs, but it is not a public release.
<h3><a name="V4.10_Documentation"></a>Documentation</h3><pre>
Moves documentation for all releases before 4.0 to history3.txt. (NEWS,
history3.txt)
</pre><h3><a name="V4.10_Utilities"></a>Utilities</h3><pre>
Fixes bugs:
- pdf2dsc.ps didn't have a proper license notice. (pdf2dsc.ps)
</pre><h3><a name="V4.10_Drivers"></a>Drivers</h3><pre>
Adds a psgray driver, like psmono, to produce 8-bit gray PostScript (level
1) images. (devs.mak, *.mak, gdevpsim.c)
Changes the psmono driver to allow runs of up to 255 repeated bytes.
(gdevpsim.c)
</pre><h3><a name="V4.10_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- setdevice erased the page even if this wasn't necessary.
(zdevice.c)
Speeds up the garbage collector, primarily by speeding up pointer
relocation. (int.mak, ipacked.h, iref.h, ialloc.c, igc.c, igcref.c)
Actually implements local garbage collection. (igc.h, ivmspace.h, igc.c,
igcref.c, igcstr.c, ireclaim.c)
Adds some additional error checking for the -Z? switch. (ilocate.c)
Moves a utility for color mapping from the interpreter to the library.
(icolor.h, zcolor.c)
Adds a MinScreenLevels user parameter. (zusparam.c)
</pre><h3><a name="V4.10_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Adds partial support for the PDF 1.2 gs operator, reverse engineered from a
PDF 1.2 file. (pdf_draw.ps)
</pre><h3><a name="V4.10_Library"></a>Library</h3><pre>
Fixes bugs:
- The test for "thin" stroked lines incorrectly claimed some
non-thin lines were thin. (gxstroke.c)
- The computations for halftone cells didn't work for non-square
pixels. (gxdht.h, gsht.c, gsht1.c, gshtscr.c)
Speeds up the garbage collector a little. (gsstruct.h, gxalloc.h,
gxfcache.h, gsfont.c)
Replaces references to private statically allocated color spaces with
references to shared dynamically allocated ones, which are guaranteed to be
fully filled-in. (gscie.c)
Moves a utility for color mapping from the interpreter to the library.
(gxfmap.h, gxcmap.c)
Makes available an imager analogue of setmatrix. (gscoord.h, gscoord.c)
Adds a parameter to control the minimum number of halftone screen levels.
If a halftone cell has fewer pixels than this number, it will be replicated
(similar to what AccurateScreens does) until the replicated screen has
enough levels. (gxht.h, gshtscr.c)
</pre>
<hr>
<h2><a name="Version4.03"></a>Version 4.03 (9/23/96)</h2>
<p>
This was an emergency re-release of 4.02 to fix the stdin redirection
problem. It has essentially no other changes.
<h3><a name="V4.03_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- Solaris 2.x has /usr/ucb/install, not installbsd. (make.txt)
Updates current.txt to mention the ability to share libpng and libgz.
(current.txt)
</pre><h3><a name="V4.03_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- A rule assumed that the makefile was named `makefile'.
(unixtail.mak)
</pre><h3><a name="V4.03_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- The stcolor drivers had an off-by-1 error that could cause them to
write into unallocated memory. (gdevstc.c)
- The Imagen driver wouldn't compile with gcc. (gdevimgn.c)
</pre><h3><a name="V4.03_Fonts"></a>Fonts</h3><pre>
Fixes bugs:
- The Solaris fontmap had gotten out of date. (Fontmap.Sol)
</pre><h3><a name="V4.03_Streams"></a>Streams</h3><pre>
Fixes bugs:
- The test for stdin being non-seekable could leave the file error
flag set, which caused an infinite loop when trying to read from the file
later. (sfile.c, sfileno.c)
</pre>
<h2><a name="Version4.02"></a>Version 4.02 (9/19/96)</h2>
<p>
This release fixes a few more bugs, and adds the ability to read encrypted
PDF files and some PDF 1.2 files.
<p>
This release was withdrawn after a few days because the stdin redirection
fix, which was made at the last minute, cause Ghostview to hang.
<h3><a name="V4.02_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- The list of required support files was incorrect. (install.txt)
- The descriptions of file name lookup weren't accurate. (use.txt)
- A J should have been an H. (gxbitmap.h)
Updates the documentation about encrypted PDF files. (new-user.txt)
Documents what the 13 base PDF fonts are. (ps2pdf.txt)
Fixes a tiny typo. (c-style.txt)
Adds a user-contributed man page for the new pdf2dsc script. (pdf2dsc.1)
Updates the government restricted rights notice in the Aladdin Ghostscript
Free Public License. (PUBLIC)
Adds the URL of test files to the bug report form. (new-user.txt)
Puts the bug reporting form in a separate file. (readme, bug-form.txt,
new-user.txt)
Notes that map_xxx_color procedures should not return gx_no_color_index.
(drivers.txt)
Notes that Ghostscript supports the Flate filters. (language.txt)
Documents the use of the system libpng and zlib. (make.txt, gs.mak)
Notes that Borland C++ 5.0 and 5.01 will not compile Ghostscript correctly.
(make.txt)
</pre><h3><a name="V4.02_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- Using both DELAYBIND and SAFER caused problems. (pstotext uses
DELAYBIND.) (gs_init.ps)
</pre><h3><a name="V4.02_Utilities"></a>Utilities</h3><pre>
Fixes bugs:
- Some pdf2ps machinery interfered with the PDF interpreter.
(pdf_2ps.ps, pdf_main.ps)
- In the output of pdf2ps, page numbers in link destinations were
too high by 1. (pdf_main.ps)
- viewpbm didn't handle value ranges other than [0..255] correctly.
(viewpbm.ps)
Adds a user-contributed shell script to invoke pdf2dsc.ps. (pdf2dsc,
unix-end.mak)
Adds a switch to the genconf utility to set the prefix for generated
procedure names. (genconf.c)
Adds the option of using system libraries (possibly shared) for libpng
and/or zlib. (*head.mak, msc*.mak, os2.mak, tccommon.mak, wccommon.mak;
libpng.mak, zlib.mak)
</pre><h3><a name="V4.02_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- The X11 display devices ignored the -DA4 compile-time option.
(gdevx.c)
- The garbage collector could scramble the state of the CGM drivers.
(gxdevice.h, gdevcgm.c)
- An identifier of more than 31 characters upset the VAX DEC C
compiler. (gdevcgml.h, gdevcgml.c)
- In case of an error in trying to set the CoreDistVersion distiller
parameter, a variable could be used without initialization. (gdevpdfp.c)
- When DEBUG is selected, the X Windows driver referenced _Xdebug,
which is not defined in (at least the VMS version of) DECWindows. (x_.h,
gdevxini.c)
- Some map_cmyk_color implementations could return "transparent".
(gdevbit.c)
- Setting GraphicsAlphaBits or TextAlphaBits in the P*M drivers
caused an error. (gdevpbm.c)
- If a user cancelled printing under MS Windows, a confusing error
resulted, and a temporary file wasn't deleted. (gdevwpr2.c)
- The map_color_rgb procedure for the bit devices produced incorrect
results. (This probably had no effect in practice.) (gdevbit.c)
- The os2prn device produced incorrect output. (gdevos2p.c)
- The OS/2 PM device didn't detect PM applications correctly.
(gdevpm.c)
- The MS Windows printer driver didn't automatically detect the
printer's color capabilities. (gdevwpr2.c)
- The BJC-610 driver didn't print at 720 dpi. (gdevcdj.c)
- The static prototypes of many devices didn't include the far_data
keyword. (gdev3852.c, gdev4081.c, gdevbgi.c, gdevcgm.c, gdevht.c,
gdevimgn.c, gdevl256.c, gdevmrop.c, gdevn533.c, gdevnfwd.c, gdevnp6.c,
gdevo182.c, gdevpcfb.c, gdevpdf.c, gdevpe.c, gdevpm.c, gdevs3ga.c,
gdevsnfb.c, gdevsppr.c, gdevsun.c, gdevsvga.c, gdevtknk.c, gdevvglb.c,
gdevwddb.c, gdevwprn.c, gdevx.c, gdevxalt.c)
- The (original) deskjet driver collapsed print lines towards the
left margin. (gdevdjet.c)
Adds to the pgm/pgnm/ppm/pnm[raw] drivers the ability to set the maximum
pixel value, by setting any of the Gray/Red/Green/BlueValues device
parameters. (gdevpbm.c)
Adds pkm[raw] drivers, which do all their internal computations in CMYK and
convert the data to RGB as they write the file. (gdevpbm.c)
</pre><h3><a name="V4.02_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- The VMS script referred to old versions of the third-party
libraries. (vms.mak)
- Under VMS with DEC C, attempting to open a new file fails.
(gp_vms.c)
- If you tried to print (gp_printfile) under Windows on a system
with no printers installed, Ghostscript caused a GPF. (gp_mswin.c)
Restores support for a non-DLL MS Windows platform. (bcwin32.mak,
dwnodll.cpp)
Adds a new MS Windows DLL call, gsdll_get_bitmap. (gsdll16.def,
gsdll32.def, dll.txt, gdevwdib.c)
Fixes a variety of other small Windows- and OS/2-related problems, mostly
related to printing. (gp_mswin.h, dpmainc.c, dwmain.cpp, dwmainc.cpp,
gdevmswn.c, gdevpm.c, gdevwpr2.c, gp_mswin.c)
</pre><h3><a name="V4.02_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- The value of /newerror in $error was true at the end of
initialization. We now reset it after each internal use of stopped if
necessary. (gs_dps1.ps, gs_fform.ps, gs_fonts.ps, gs_init.ps, gs_pdf.ps,
gs_res.ps, gs_type1.ps)
- setpagedevice (and finddevice) didn't recognize Default.
(gs_init.ps)
- When running with -dNODISPLAY, calling gssetresolution would cause
a crash. (gs_init.ps)
- A particular combination of save, .forgetsave, and garbage
collection could cause a memory access error in restore. (isave.c)
- Some references to systemdict were affected if a user redefined
the name /systemdict. (gs_cmdl.ps, gs_fonts.ps, gs_kanji.ps, gs_dps1.ps,
gs_init.ps, gs_res.ps, gs_statd.ps, gs_type1.ps)
- The insideness testing operators caused an invalid memory access.
(drivers.txt, zupath.c)
- If a readline reached an input buffer boundary between the \r and
\n of a 2-character EOL, an error could occur. (zfileio.c)
- setdevparams caused an error. (gs_lev2.ps)
Changes file names beginning with ./ or ../ so they are recognized as
"absolute" and not subject to the search path. (gp_dosfs.c, gp_ntfs.c,
gp_os2.c, gp_unifn.c)
Changes the exit code for -h or --help from 0 to 1, so an invoking program
will keep the output around for the user to look at. (imainarg.c)
Adds the FlateEncode and FlateDecode filters; adds PNG pixel prediction to
the LZW filters. These additions are required for PDF 1.2 and will be part
of PostScript Level 3. (int.mak, lib.mak, zfdecode.c, zfilter2.c, zfzlib.c,
zfpngp.c [deleted])
</pre><h3><a name="V4.02_Interpreter_PDF"></a>Interpreter (PDF)</h3><pre>
Fixes bugs:
- The copyright notices on some files didn't mention the Aladdin
free license. (pdf_*.ps)
- Some references to systemdict were affected if a user redefined
the name /systemdict. (pdf_font.ps)
- The value of /newerror in $error was true at the end of
initialization. We now reset it after each internal use of stopped if
necessary. (pdf_main.ps)
- stdin redirection failed for PDF files even if the new stdin was
seekable. (pdf_main.ps)
- The Rotate key rotated pages in the wrong direction.
(pdf_main.ps)
Adds a minimal "security socket" to the interpreter. This does not include
any actual decryption code; such code is available elsewhere (see
new-user.txt). (int.mak, pdf_base.ps, pdf_main.ps, pdf_sec.ps)
Adds a PDF 1.2 capability:
- The destination in a Dest array can be a page number as well as a
page object. (pdf_main.ps)
</pre><h3><a name="V4.02_Streams"></a>Streams</h3><pre>
Fixes bugs:
- stdin was assumed to be non-seekable. (sfile.c, sfileno.c)
</pre><h3><a name="V4.02_Library"></a>Library</h3><pre>
Fixes bugs:
- Garbage collection could corrupt a pointer in Type 0 fonts.
(gxfont0.h, gsfont0.c)
- When applying hints to a Type 1 font outline, the last point could
sometimes get moved twice, causing output anomalies. (gxhint3.c)
- An #include needed for debugging was missing. (gxcmap.h)
- Graphics states included a no-longer-used private color space
object. (gsstate.c)
- Images could get clipped randomly in the X direction. (I don't
understand why this problem hasn't shown up more often, since it's been
there since release 4.00.) (gximage.c)
- The arct and arcto operators failed to draw the line to the
starting point of the arc. (bug introduced in 4.01) (gspath1.c)
- Prefix subclasses of simple structures caused an invalid memory
access. (gsstruct.h)
- The variable fheight was sometimes unused. (gstype1.c)
- igcd and imod didn't have prototypes in an appropriate header
file, and were declared extern in several places. (gsdcolor.h, gsline.h,
gxarith.h, gxdht.h, gsht.c, gshtscr.c, gsimage.c, gsline.c, gstype1.c,
gxclimag.c)
- When using a non-identity RenderTable in a CIE rendering
dictionary, all colors came out too light. (gscie.c)
- When using anti-aliased graphics, stroked lines were rendered too
thin. (gspaint.c)
- The default map_cmyk_color implementations could return
"transparent". (gxcmap.c)
- The number of bits of alpha requested when rendering anti-aliased
characters could exceed 4. (gschar.c)
- Multi-screen halftones could cause errors or infinite looping when
banding. (This problem predates 4.0; I don't know why it didn't show up
before.) (gxcldev.h, gxclist.c, gxclread.c)
- Skewed or rotated gray-scale images, or masks with a halftoned
color, omitted one line of pixels and displaced the image by one pixel.
(gximage2.c)
Adds an implementation of realloc, for systems that don't have one that
works. I don't know how to determine this automatically, so for the moment,
the code uses our own implementation on Linux (where realloc is known to be
broken, at least in some releases) and nowhere else. (malloc_.h,
gsmemory.c, gsmisc.c)
Removes the "OLD" algorithms from the Type 1 hinting source code, since they
are no longer executed. (If necessary, they can be retrieved from an older
version.) (gxhint3.c)
</pre>
<h2><a name="Version4.01"></a>Version 4.01 (7/10/96)</h2>
<p>
This fixes a few minor bugs discovered since the 4.0 release.
<h3><a name="V4.01_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- An installation directory name was wrong. (make.txt,
unix-lpr.txt)
- A URL was wrong. (devices.txt)
- A reference to use.doc hadn't been updated. (gs.1)
- Some references to /usr/local/lib hadn't been updated. (gs.1)
- The NEWS file and history* files still referred to *.doc rather
than *.txt. (NEWS, history*.txt)
Adds a note about compilation on Digital Unix. (make.txt)
Clarifies that calling gs_exit calls gs_finit automatically. (imain.h)
Adds a pointer to the PDF encryption patch. (Ridiculous U.S. export control
laws don't allow including the patch itself in the main fileset.)
(new-user.txt)
Adds a help file for VMS. (gs-vms.hlp)
</pre><h3><a name="V4.01_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- vms.mak had gotten out of sync with the makefiles (again).
(vms.mak)
- DEVICE{WIDTH,HEIGHT}POINTS didn't override PAPERSIZE.
(gs_init.ps)
- The Microsoft C makefiles had gotten out of date. (msc.mak)
The (few) GNU-Licensed drivers were accidentally omitted from the fileset.
Modifies a makefile for greater reusability. (watclib.mak)
Adds a 'debug' target for making Unix debugging configurations.
(unix-end.mak)
</pre><h3><a name="V4.01_Utilities"></a>Utilities</h3><pre>
Fixes bugs:
- Some uses of 'run' should be changed to runlibfile. (bdftops.ps,
impath.ps, markhint.ps, packfile.ps, showchar.ps, waterfal.ps, wftopfa.ps,
wrfont.ps)
- Some debugging code hadn't been removed. (gslp.ps)
Adds a new utility, viewcmyk.ps, for viewing 4-bit CMYK data. (psfiles.txt,
unix-end.mak, viewcmyk.ps)
Improves pdf2dsc by including Title and CreationDate DSC comments (these are
displayed by Ghostview) and reducing the size of typical output files by a
factor of about 3. (pdf2dsc.ps)
Incorporates major changes (claimed to be improvements) to ps2ascii
contributed by a user. If you have problems with it, please contact him,
not Aladdin. (ps2ascii.ps)
</pre><h3><a name="V4.01_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- The X value of a bounding box could be computed incorrectly.
(gdevbbox.c)
</pre><h3><a name="V4.01_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- The Windows DLL sometimes didn't clean up properly. (dll.txt,
dpmainc.c, dwdll.cpp, dwmain.cpp, dwmainc.cpp, gsdll.c, gsdll.h)
</pre><h3><a name="V4.01_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- Reading from a filter could hang forever, because a buffer was
allocated 1 byte too small. (zfilter.c)
- The search path could become garbage under some circumstances.
(imain.c)
- A dangling reference to a stack-allocated variable could corrupt
memory if a client mixed interpreter calls and direct C calls. (interp.c)
- Printing an object to a procedure-based filter could cause an
invalid memory access. (zfileio.c)
</pre><h3><a name="V4.01_Library"></a>Library</h3><pre>
Fixes bugs:
- Setting parameters for an unopened device could cause an access
error or invoke the wrong put_params procedure. (gsdparam.c)
- Reading from a filter could hang forever, because a buffer was
allocated 1 byte too small. (stream.h)
- If the current device was the nullpage device, doing a [g]save,
selecting a different device, and doing a [g]restore caused an error.
(gsdparam.c)
Adds the ability to append arcs without the initial lineto, for PCL
emulation. (gspath.h, gspath1.c)
</pre>
<h2><a name="Version4.0"></a>Version 4.0 (6/28/96)</h2>
<p>
This is the first public release since 3.53, with a few more last-minute
patches beyond 3.70.
<h3><a name="V4.0_Documentation"></a>Documentation</h3><pre>
Fixes bugs:
- Many makefiles still referred to .doc files rather than .txt.
(cfonts.mak, devs.mak, gs.mak, int.mak, libpng.mak, unix-end.mak, watc.mak,
watcwin.mak, wccommon.mak, zlib.mak)
- Some FONTPATH-related information was out of date. (use.txt)
- The installation directory for fonts was incorrect. (install.txt)
- The libpng and zlib versions were out of date. (libpng.mak,
zlib.mak)
- Some information about GSview was incorrect or incomplete.
(new-user.txt)
- make.txt said it described installation as well as building.
(make.txt)
Notes that the current release of zlib won't compile and link correctly with
Sun cc. (make.txt)
Adds a little more detail to the C style document. (c-style.txt)
</pre><h3><a name="V4.0_Procedures"></a>Procedures</h3><pre>
Fixes bugs:
- Some documentation files weren't installed. (unix-end.mak)
- Some dependencies were incorrect. (bcwin32.mak)
- 'make begin' and 'make clean' deleted too many and/or the wrong
files. (bcwin.mak, bcwin32.mak)
- libpng.mak didn't work with libpng version 0.89c. (libpng.mak)
- -d<var>=<name> was equivalent to -d<var>=/<name>, and there was no
way to set a variable to true, false, or null. (use.txt, gs_init.ps,
iinit.c, imainarg.c)
Removes the modules.lis file, which is no longer used.
Undoes detecting automatically the need to run tar_cat -- the mechanism
didn't work, and caused confusion. (unix-end.mak)
Updates the makefiles to libpng version 0.89, but allows them to work with
either 0.88 or 0.89. (*.mak)
</pre><h3><a name="V4.0_Utilities"></a>Utilities</h3><pre>
Fixes bugs:
- Showing the details of a protected font caused an error.
(markhint.ps)
</pre><h3><a name="V4.0_Drivers"></a>Drivers</h3><pre>
Fixes bugs:
- A copyright notice was wrong. (gs_pdfwr.ps)
- PDF link annotations could get written with two Dest keys.
(gdevpdfm.c)
- MakeProcInstance and FreeProcInstance were called on platforms
where it wasn't appropriate. (gdevwpr2.c, gdevwprn.c, gp_mswin.c)
- On X servers that return very large values for the "virtual
screen" size in millimeters but correct values for the screen size in
pixels, a rangecheck could occur. (gdevxini.c)
- The bounding box device could return garbage if stroke or fill was
ever invoked with an empty path. (gdevbbox.c)
Replaces the LBP8 driver with a revised one contributed by a user.
(gdevlbp8.c, devs.mak)
</pre><h3><a name="V4.0_Platforms"></a>Platforms</h3><pre>
Fixes bugs:
- Some Windows menu parameters were incorrect. (gsdll16.rc,
gsdll32.rc)
</pre><h3><a name="V4.0_Interpreter"></a>Interpreter</h3><pre>
Fixes bugs:
- .getdevparams sometimes returned duplicate entries for /Type.
(ziodev2.c)
- File names weren't parsed or concatenated properly on all
platforms. (gs_fonts.ps, zfile.c)
- Filter lookahead caused problems with special files. (zfproc.c)
- If a TransformPQR procedure in a CIE color rendering dictionary
didn't pop its 4 array arguments, an error occurred. (gs_lev2.ps, zcrd.c)
</pre><h3><a name="V4.0_Streams"></a>Streams</h3><pre>
Fixes bugs:
- Filter lookahead caused problems with special files. (bug
introduced in 3.70) (stream.h)
</pre><h3><a name="V4.0_Library"></a>Library</h3><pre>
Fixes bugs:
- .getdevparams sometimes returned duplicate entries for /Type.
(gxiodev.h, gsiodev.c)
</pre>
<!-- [3.0 begin visible trailer] =========================================== -->
<hr>
<p>
<small>Copyright © 2000-2006 artofcode LLC. All rights reserved.</small>
<p>
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied, modified
or distributed except as expressly authorized under the terms of that
license. Refer to licensing information at http://www.artifex.com/
or contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134,
San Rafael, CA 94903, U.S.A., +1(415)492-9861, for further information.
<p>
<small>Ghostscript version 8.56, 14 March 2007
<!-- [3.0 end visible trailer] ============================================= -->
</body>
</html>
|
