unofficial mirror of bug-gnu-emacs@gnu.org 
 help / color / mirror / code / Atom feed
blob 2a7eb723632ef09d37883fc2cd90ea4dab1c5ad5 189649 bytes (raw)
name: lisp/term.el 	 # note: path name is non-authoritative(*)

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
 
;;; term.el --- general command interpreter in a window stuff -*- lexical-binding: t -*-

;; Copyright (C) 1988, 1990, 1992, 1994-1995, 2001-2022 Free Software
;; Foundation, Inc.

;; Author: Per Bothner <per@bothner.com>
;; Maintainer: Dan Nicolaescu <dann@ics.uci.edu>, Per Bothner <per@bothner.com>
;; Based on comint mode written by: Olin Shivers <shivers@cs.cmu.edu>
;; Keywords: processes

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;; March 13 2001
;; Fixes for CJK support by Yong Lu <lyongu@yahoo.com>.

;; Dir/Hostname tracking and ANSI colorization by
;; Marco Melgazzi <marco@techie.com>.

;; To see what I've modified and where it came from search for '-mm'

;;; Commentary:

;; This file defines a general command-interpreter-in-a-buffer package
;; (term mode).  The idea is that you can build specific process-in-a-buffer
;; modes on top of term mode -- e.g., Lisp, shell, Scheme, T, soar, ....
;; This way, all these specific packages share a common base functionality,
;; and a common set of bindings, which makes them easier to use (and
;; saves code, implementation time, etc., etc.).

;; If, instead of `term', you call `ansi-term', you get multiple term
;; buffers, after every new call ansi-term opens a new
;; "*ansi-term*<xx>" window, where <xx> is, as usual, a number...

;; For hints on converting existing process modes (e.g., tex-mode,
;; background, dbx, gdb, kermit, prolog, telnet) to use term-mode
;; instead of shell-mode, see the notes at the end of this file.

;; Speed considerations and a few caveats
;; --------------------------------------
;;
;; While the message passing and the colorization surely introduce some
;; overhead this has became so small that IMHO it is surely outweighed by
;; the benefits you get but, as usual, YMMV.
;;
;; Important caveat, when deciding the cursor/'gray keys' keycodes I had to
;; make a choice: on my Linux box this choice allows me to run all the
;; ncurses applications without problems but make these keys
;; incomprehensible to all the cursesX programs.  Your mileage may vary so
;; you may consider changing the default 'emulation'.  Just search for this
;; piece of code and modify it as you like:
;;
;; ;; Which would be better:  "\e[A" or "\eOA"? readline accepts either.
;; ;; For my configuration it's definitely better \eOA but YMMV.  -mm
;; ;; For example: vi works with \eOA while elm wants \e[A ...
;; (defun term-send-up    () (interactive) (term-send-raw-string "\eOA"))
;; (defun term-send-down  () (interactive) (term-send-raw-string "\eOB"))
;; (defun term-send-right () (interactive) (term-send-raw-string "\eOC"))
;; (defun term-send-left  () (interactive) (term-send-raw-string "\eOD"))
;;
;;
;; IMPORTANT: additions & changes
;; ------------------------------
;;
;;  With this enhanced ansi-term.el you will get a reliable mechanism of
;; directory/username/host tracking: the only drawback is that you will
;; have to modify your shell start-up script.  It's worth it, believe me :).
;;
;; When you rlogin/su/telnet and the account you access has a modified
;; startup script, you will be able to access the remote files as usual
;; with C-x C-f, if it's needed you will have to enter a password,
;; otherwise the file should get loaded straight away.
;;
;; This is useful even if you work only on one host: it often happens that,
;; for maintenance reasons, you have to edit files 'as root': before
;; patching term.el, I su-ed in a term.el buffer and used vi :), now I
;; simply do a C-x C-f and, via ange-ftp, the file is automatically loaded
;; 'as-root'.  (If you don't want to enter the root password every time you
;; can put it in your .netrc: note that this is -not- advisable if you're
;; connected to the internet or if somebody else works on your workstation!)
;;
;; If you use wu-ftpd you can use some of its features to avoid root ftp
;; access to the rest of the world: just put in /etc/ftphosts something like
;;
;; # Local access
;; allow	root		127.0.0.1
;;
;; # By default nobody can't do anything
;; deny	root		*
;;
;;             ----------------------------------------
;;
;;  With the variable term-buffer-maximum-size you can decide how many
;; scrollback lines to keep: its default is 8192.
;;
;;             ----------------------------------------
;;
;;
;;  ANSI colorization should work well.  Blink, is not supported.
;;  Currently it's mapped as bold.
;;
;;             ----------------------------------------
;;
;;  TODO:
;;
;;  - Add hooks to allow raw-mode keys to be configurable
;;  - Which keys are better ? \eOA or \e[A ?
;;
;;  ----------------------------------------------------------------
;;  You should/could have something like this in your .emacs to take
;;  full advantage of this package
;;
;;  (add-hook 'term-mode-hook
;;            (lambda ()
;;              (setq term-prompt-regexp "^[^#$%>\n]*[#$%>] *")
;;              (setq-local mouse-yank-at-point t)
;;              (setq-local transient-mark-mode nil)
;;              (auto-fill-mode -1)
;;              (setq tab-width 8)))
;;
;;             ----------------------------------------
;;
;;  If you want to use color ls the best setup is to have a different file
;; when you use eterm ( see above, mine is named .emacs_dircolors ).  This
;; is necessary because some terminals, rxvt for example, need non-ansi
;; hacks to work ( for example on my rxvt white is wired to fg, and to
;; obtain normal white I have to do bold-white :)
;;
;;             ----------------------------------------
;;
;;  # Configuration file for the color ls utility
;;  # This file goes in the /etc directory, and must be world readable.
;;  # You can copy this file to .dir_colors in your $HOME directory to
;;  # override the system defaults.
;;
;;  # COLOR needs one of these arguments: 'tty' colorizes output to ttys, but
;;  # not pipes.  'all' adds color characters to all output.  'none' shuts
;;  # colorization off.
;;  COLOR tty
;;  OPTIONS -F
;;
;;  # Below, there should be one TERM entry for each termtype that is
;;  # colorizable
;;  TERM eterm
;;
;;  # EIGHTBIT, followed by '1' for on, '0' for off.  (8-bit output)
;;  EIGHTBIT 1
;;
;;  # Below are the color init strings for the basic file types.  A color init
;;  # string consists of one or more of the following numeric codes:
;;  # Attribute codes:
;;  # 00=none 01=bold 04=underscore 05=blink 07=reverse 08=concealed
;;  # Text color codes:
;;  # 30=black 31=red 32=green 33=yellow 34=blue 35=magenta 36=cyan 37=white
;;  # Background color codes:
;;  # 40=black 41=red 42=green 43=yellow 44=blue 45=magenta 46=cyan 47=white
;;  NORMAL 00	# global default, although everything should be something.
;;  FILE 00 		# normal file
;;  DIR 00;37 	# directory
;;  LINK 00;36 	# symbolic link
;;  FIFO 00;37	# pipe
;;  SOCK 40;35	# socket
;;  BLK 33;01	# block device driver
;;  CHR 33;01 	# character device driver
;;
;;  # This is for files with execute permission:
;;  EXEC 00;32
;;
;;  # List any file extensions like '.gz' or '.tar' that you would like ls
;;  # to colorize below.  Put the extension, a space, and the color init
;;  # string.  (and any comments you want to add after a '#')
;;  .tar 01;33 # archives or compressed
;;  .tgz 01;33
;;  .arj 01;33
;;  .taz 01;33
;;  .lzh 01;33
;;  .zip 01;33
;;  .z   01;33
;;  .Z   01;33
;;  .gz  01;33
;;  .jpg 01;35 # image formats
;;  .gif 01;35
;;  .bmp 01;35
;;  .xbm 01;35
;;  .xpm 01;35
;;
;;             ----------------------------------------
;;
;; There are actually two methods for directory tracking, one
;; implemented in `term-command-hook' which sets the directory
;; according to an escape sequence of the form "\032/<directory>\n".
;; Some shells like bash will already send this escape sequence when
;; they detect they are running in Emacs.  This can be configured or
;; disabled on the Emacs side by setting `term-command-hook' to
;; a different function.
;;
;; The second method is in `term-handle-ansi-terminal-messages' which
;; sets user, host, and directory according to escape sequences of the
;; form "\033AnSiTc <directory>\n" (replace the "c" with "u" and "h"
;; for user and host, respectively).  If the user and host don't
;; match, it will set directory to a remote one, so it is important to
;; set user and host correctly first.  See the example bash
;; configuration below.
;;
;;             ----------------------------------------
;;
;;	# Set HOSTNAME if not already set.
;;	: ${HOSTNAME=$(uname -n)}
;;
;;	# su does not change this but I'd like it to
;;	USER=$(whoami)
;;
;;	# ...
;;
;;	case $TERM in
;;	    eterm*)
;;
;;		printf '%s\n' \
;;		 -------------------------------------------------------------- \
;;		 "Hello $USER" \
;;		 "Today is $(date)" \
;;		 "We are on $HOSTNAME running $(uname) under Emacs term mode" \
;;		 --------------------------------------------------------------
;;
;;		# The \033 stands for ESC.
;;		# There is a space between "AnSiT?" and $whatever.
;;		printf '\033AnSiTh %s\n' "$HOSTNAME"
;;		printf '\033AnSiTu %s\n' "$USER"
;;		printf '\033AnSiTc %s\n' "$PWD"
;;
;;		cd()    { command cd    "$@" && printf '\033AnSiTc %s\n' "$PWD"; }
;;		pushd() { command pushd "$@" && printf '\033AnSiTc %s\n' "$PWD"; }
;;		popd()  { command popd  "$@" && printf '\033AnSiTc %s\n' "$PWD"; }
;;
;;		# Use custom dircolors in term buffers.
;;		# eval $(dircolors $HOME/.emacs_dircolors)
;;	esac
;;
;;	# ...
;;
;; For troubleshooting in Bash, you can check the definition of the
;; custom functions with the "type" command.  e.g. "type cd".  If you
;; do not see the expected definition from the config below, then the
;; directory tracking will not work.

\f
;; Brief Command Documentation:
;;============================================================================
;; Term Mode Commands: (common to all derived modes, like cmushell & cmulisp
;; mode)
;;
;; M-p     term-previous-input           Cycle backwards in input history
;; M-n     term-next-input               Cycle forwards
;; M-r     term-previous-matching-input  Previous input matching a regexp
;; M-s     term-next-matching-input      Next input that matches
;; return  term-send-input
;; C-c C-a term-bol                      Beginning of line; skip prompt.
;; C-d     term-delchar-or-maybe-eof     Delete char unless at end of buff.
;; C-c C-u term-kill-input               ^u
;; C-c C-w backward-kill-word            ^w
;; C-c C-c term-interrupt-subjob         ^c
;; C-c C-z term-stop-subjob              ^z
;; C-c C-\ term-quit-subjob              ^\
;; C-c C-o term-kill-output              Delete last batch of process output
;; C-c C-r term-show-output              Show last batch of process output
;; C-c C-h term-dynamic-list-input-ring  List input history
;;
;; Not bound by default in term-mode
;; term-send-invisible			Read a line w/o echo, and send to proc
;; (These are bound in shell-mode)
;; term-dynamic-complete		Complete filename at point.
;; term-dynamic-list-completions	List completions in help buffer.
;; term-replace-by-expanded-filename	Expand and complete filename at point;
;;					replace with expanded/completed name.
;; term-kill-subjob			No mercy.
;; term-show-maximum-output             Show as much output as possible.
;; term-continue-subjob                 Send CONT signal to buffer's process
;;					group.  Useful if you accidentally
;;					suspend your process (with C-c C-z).

;; term-mode-hook is the term mode hook.  Basically for your keybindings.
;; term-load-hook is run after loading in this package.

;;; Code:

;; This is passed to the inferior in the EMACS environment variable,
;; so it is important to increase it if there are protocol-relevant changes.
(defconst term-protocol-version "0.96")

(eval-when-compile
  (require 'ange-ftp)
  (require 'cl-lib))
(require 'comint) ; Password regexp.
(require 'ansi-color)
(require 'ehelp)
(require 'ring)
(require 'shell)

(defgroup term nil
  "General command interpreter in a window."
  :group 'processes)

\f
;;; Buffer Local Variables:
;;============================================================================
;; Term mode buffer local variables:
;;     term-prompt-regexp    - string       term-bol uses to match prompt.
;;     term-delimiter-argument-list - list  For delimiters and arguments
;;     term-last-input-start - marker       Handy if inferior always echoes
;;     term-last-input-end   - marker       For term-kill-output command
;; For the input history mechanism:
(defvar term-input-ring-size 32 "Size of input history ring.")
;;     term-input-ring-size  - integer
;;     term-input-ring       - ring
;;     term-input-ring-index - number           ...
;;     term-input-autoexpand - symbol           ...
;;     term-input-ignoredups - boolean          ...
;;     term-last-input-match - string           ...
;;     term-dynamic-complete-functions - hook   For the completion mechanism
;;     term-completion-fignore - list           ...
;;     term-get-old-input    - function     Hooks for specific
;;     term-input-filter-functions - hook     process-in-a-buffer
;;     term-input-filter     - function         modes.
;;     term-input-send	- function
;;     term-scroll-to-bottom-on-output - symbol ...
;;     term-scroll-show-maximum-output - boolean...
(defvar term-height)                    ; Number of lines in window.
(defvar term-width)                     ; Number of columns in window.
(defvar term-home-marker) ; Marks the "home" position for cursor addressing.
(defvar term-saved-home-marker nil
  "When using alternate sub-buffer,
contains saved `term-home-marker' from original sub-buffer.")
(defvar term-start-line-column 0
  "(current-column) at start of screen line, or nil if unknown.")
(defvar term-current-column 0 "If non-nil, is cache for (current-column).")
(defvar term-current-row 0
  "Current vertical row (relative to home-marker) or nil if unknown.")
(defvar term-insert-mode nil)
(defvar term-vertical-motion)
(defvar term-do-line-wrapping nil
  "Last character was a graphic in the last column.
If next char is graphic, first move one column right
\(and line warp) before displaying it.
This emulates (more or less) the behavior of xterm.")
(defvar term-kill-echo-list nil
  "A queue of strings whose echo we want suppressed.")
(defvar term-terminal-undecoded-bytes nil)
(defvar term-current-face 'term)
(defvar-local term-scroll-start 0
  "Top-most line (inclusive) of the scrolling region.
`term-scroll-start' must be in the range [0,term-height).  In addition, its
value has to be smaller than `term-scroll-end', i.e. one line scroll regions are
not allowed.")
(defvar-local term-scroll-end nil
  "Bottom-most line (inclusive) of the scrolling region.
`term-scroll-end' must be in the range [0,term-height).  In addition, its
value has to be greater than `term-scroll-start', i.e. one line scroll regions
are not allowed.")
(defvar term-pager-count nil
  "Number of lines before we need to page; if nil, paging is disabled.")
(defvar term-saved-cursor nil)
(define-obsolete-variable-alias 'term-command-hook
  'term-command-function "27.1")
(defvar term-command-function #'term-command-hook)
(defvar term-log-buffer nil)
(defvar term-scroll-with-delete nil
  "If t, forward scrolling should be implemented by delete to
top-most line(s); and if nil, scrolling should be implemented
by moving `term-home-marker'.  It is set to t if there is a
\(non-default) scroll-region OR the alternate buffer is used.")
(defvar term-pending-delete-marker) ; New user input in line mode
       ; needs to be deleted, because it gets echoed by the inferior.
       ; To reduce flicker, we defer the delete until the next output.
(defvar term-old-mode-map nil "Saves the old keymap when in char mode.")
(defvar term-old-mode-line-format) ; Saves old mode-line-format while paging.
(defvar term-pager-old-local-map nil "Saves old keymap while paging.")
(defvar term-pager-old-filter) ; Saved process-filter while paging.
(defvar-local term-line-mode-buffer-read-only nil
  "The `buffer-read-only' state to set in `term-line-mode'.")

(defvar term-prompt-regexp "^"
  "Regexp to recognize prompts in the inferior process.
Defaults to \"^\", the null string at BOL.

Good choices:
  Canonical Lisp: \"^[^> \\n]*>+:? *\" (Lucid, franz, kcl, T, cscheme, oaklisp)
  Lucid Common Lisp: \"^\\\\(>\\\\|\\\\(->\\\\)+\\\\) *\"
  franz: \"^\\\\(->\\\\|<[0-9]*>:\\\\) *\"
  kcl: \"^>+ *\"
  shell: \"^[^#$%>\\n]*[#$%>] *\"
  T: \"^>+ *\"

This is a good thing to set in mode hooks.")

(defvar term-delimiter-argument-list ()
  "List of characters to recognize as separate arguments in input.
Strings comprising a character in this list will separate the arguments
surrounding them, and also be regarded as arguments in their own right
\(unlike whitespace).  See `term-arguments'.
Defaults to the empty list.

For shells, a good value is (?\\| ?& ?< ?> ?\\( ?\\) ?\\;).

This is a good thing to set in mode hooks.")

(defcustom term-input-autoexpand nil
  "If non-nil, expand input command history references on completion.
This mirrors the optional behavior of tcsh (its autoexpand and histlit).

If the value is `input', then the expansion is seen on input.
If the value is `history', then the expansion is only when inserting
into the buffer's input ring.  See also `term-magic-space' and
`term-dynamic-complete'.

This variable is buffer-local."
  :type '(choice (const nil) (const t) (const input) (const history))
  :group 'term)

(defcustom term-input-ignoredups nil
  "If non-nil, don't add input matching the last on the input ring.
This mirrors the optional behavior of bash.

This variable is buffer-local."
  :type 'boolean
  :group 'term)

(defcustom term-input-ring-file-name nil
  "If non-nil, name of the file to read/write input history.
See also `term-read-input-ring' and `term-write-input-ring'.

This variable is buffer-local, and is a good thing to set in mode hooks."
  :type 'boolean
  :group 'term)

(defcustom term-char-mode-buffer-read-only t
  "If non-nil, only the process filter may modify the buffer in char mode.

A non-nil value makes the buffer read-only in `term-char-mode',
which prevents editing commands from making the buffer state
inconsistent with the state of the terminal understood by the
inferior process.  Only the process filter is allowed to make
changes to the buffer.

Customize this option to nil if you want the previous behavior."
  :version "26.1"
  :type 'boolean
  :group 'term)

(defcustom term-set-terminal-size nil
  "If non-nil, set the LINES and COLUMNS environment variables."
  :type 'boolean
  :version "28.1")

(defcustom term-char-mode-point-at-process-mark t
  "If non-nil, keep point at the process mark in char mode.

A non-nil value causes point to be moved to the current process
mark after each command in `term-char-mode' (provided that the
pre-command point position was also at the process mark).  This
prevents commands that move point from making the buffer state
inconsistent with the state of the terminal understood by the
inferior process.

Mouse events are not affected, so moving point and selecting text
is still possible in char mode via the mouse, after which other
commands can be invoked on the mouse-selected point or region,
until the process filter (or user) moves point to the process
mark once again.

Customize this option to nil if you want the previous behavior."
  :version "26.1"
  :type 'boolean
  :group 'term)

(defcustom term-scroll-to-bottom-on-output nil
  "Controls whether interpreter output causes window to scroll.
If nil, then do not scroll.  If t or `all', scroll all windows showing buffer.
If `this', scroll only the selected window.
If `others', scroll only those that are not the selected window.

The default is nil.

See variable `term-scroll-show-maximum-output'.
This variable is buffer-local."
  :type 'boolean
  :group 'term)

(defcustom term-scroll-snap-to-bottom t
  "Control whether to keep the prompt at the bottom of the window.
If non-nil, when the prompt is visible within the window, then
scroll so that the prompt is on the bottom on any input or
output."
  :version "28.1"
  :type 'boolean)

(defcustom term-scroll-show-maximum-output nil
  "Controls how interpreter output causes window to scroll.
If non-nil, then show the maximum output when the window is scrolled.

See variable `term-scroll-to-bottom-on-output'.
This variable is buffer-local."
  :type 'boolean
  :group 'term)

(defcustom term-suppress-hard-newline nil
  "Non-nil means interpreter should not break long lines with newlines.
This means text can automatically reflow if the window is resized."
  :version "24.4"
  :type 'boolean
  :group 'term)
(make-obsolete-variable 'term-suppress-hard-newline nil
                        "27.1")

(defcustom term-clear-full-screen-programs t
  "Whether to clear contents of full-screen terminal programs after exit.
If non-nil, output of full-screen terminal programs is cleared after
exiting them.  Note however that a minority of such programs
don't send an appropriate escape sequence to the terminal before
exiting so their output isn't cleared regardless of this option."
  :version "29.1"
  :type 'boolean
  :group 'term)

;; Where gud-display-frame should put the debugging arrow.  This is
;; set by the marker-filter, which scans the debugger's output for
;; indications of the current pc.
(defvar term-pending-frame nil)

;;; Here are the per-interpreter hooks.
(defvar term-get-old-input (function term-get-old-input-default)
  "Function that submits old text in term mode.
This function is called when return is typed while the point is in old text.
It returns the text to be submitted as process input.  The default is
`term-get-old-input-default', which grabs the current line, and strips off
leading text matching `term-prompt-regexp'.")

(defvar term-dynamic-complete-functions
  '(term-replace-by-expanded-history term-dynamic-complete-filename)
  "List of functions called to perform completion.
Functions should return non-nil if completion was performed.
See also `term-dynamic-complete'.

This is a good thing to set in mode hooks.")

(defvar term-input-filter
  (lambda (str) (not (string-match "\\`\\s *\\'" str)))
  "Predicate for filtering additions to input history.
Only inputs answering true to this function are saved on the input
history list.  Default is to save anything that isn't all whitespace.")

(defvar term-input-filter-functions '()
  "Functions to call before input is sent to the process.
These functions get one argument, a string containing the text to send.

This variable is buffer-local.")

(defvar term-input-sender #'term-simple-send
  "Function to actually send to PROCESS the STRING submitted by user.
Usually this is just `term-simple-send', but if your mode needs to
massage the input string, this is your hook.  This is called from
the user command `term-send-input'.  `term-simple-send' just sends
the string plus a newline.")

(defcustom term-eol-on-send t
  "Non-nil means go to the end of the line before sending input.
See `term-send-input'."
  :type 'boolean
  :group 'term)

(defcustom term-mode-hook '()
  "Called upon entry into term mode.
This is run before the process is cranked up."
  :type 'hook
  :group 'term)

(defcustom term-exec-hook '()
  "Called each time a process is exec'd by `term-exec'.
This is called after the process is cranked up.  It is useful for things that
must be done each time a process is executed in a term mode buffer (e.g.,
`set-process-query-on-exit-flag').  In contrast, `term-mode-hook' is only
executed once, when the buffer is created."
  :type 'hook
  :group 'term)

(defvar term-mode-map
  (let ((map (make-sparse-keymap)))
    (define-key map "\ep" 'term-previous-input)
    (define-key map "\en" 'term-next-input)
    (define-key map "\er" 'term-previous-matching-input)
    (define-key map "\es" 'term-next-matching-input)
    (define-key map [?\A-\M-r]
      'term-previous-matching-input-from-input)
    (define-key map [?\A-\M-s] 'term-next-matching-input-from-input)
    (define-key map "\e\C-l" 'term-show-output)
    (define-key map "\C-m" 'term-send-input)
    (define-key map "\C-d" 'term-delchar-or-maybe-eof)
    (define-key map "\C-c\C-a" 'term-bol)
    (define-key map "\C-c\C-u" 'term-kill-input)
    (define-key map "\C-c\C-w" 'backward-kill-word)
    (define-key map "\C-c\C-c" 'term-interrupt-subjob)
    (define-key map "\C-c\C-z" 'term-stop-subjob)
    (define-key map "\C-c\C-\\" 'term-quit-subjob)
    (define-key map "\C-c\C-m" 'term-copy-old-input)
    (define-key map "\C-c\C-o" 'term-kill-output)
    (define-key map "\C-c\C-r" 'term-show-output)
    (define-key map "\C-c\C-e" 'term-show-maximum-output)
    (define-key map "\C-c\C-l" 'term-dynamic-list-input-ring)
    (define-key map "\C-c\C-n" 'term-next-prompt)
    (define-key map "\C-c\C-p" 'term-previous-prompt)
    (define-key map "\C-c\C-d" 'term-send-eof)
    (define-key map "\C-c\C-k" 'term-char-mode)
    (define-key map "\C-c\C-j" 'term-line-mode)
    (define-key map "\C-c\C-q" 'term-pager-toggle)
    ;; completion: (line mode only)
    (easy-menu-define nil map "Complete menu for Term mode."
      '("Complete"
        ["Complete Before Point" term-dynamic-complete t]
        ["Complete File Name" term-dynamic-complete-filename t]
        ["File Completion Listing" term-dynamic-list-filename-completions t]
        ["Expand File Name" term-replace-by-expanded-filename t]))
    ;; Input history: (line mode only)
    (easy-menu-define nil map "In/Out menu for Term mode."
      '("In/Out"
        ["Expand History Before Point" term-replace-by-expanded-history
         term-input-autoexpand]
        ["List Input History" term-dynamic-list-input-ring t]
        ["Previous Input" term-previous-input t]
        ["Next Input" term-next-input t]
        ["Previous Matching Current Input"
          term-previous-matching-input-from-input t]
        ["Next Matching Current Input" term-next-matching-input-from-input t]
        ["Previous Matching Input..." term-previous-matching-input t]
        ["Next Matching Input..." term-next-matching-input t]
        ["Backward Matching Input..." term-backward-matching-input t]
        ["Forward Matching Input..." term-forward-matching-input t]
        ["Copy Old Input" term-copy-old-input t]
        ["Kill Current Input" term-kill-input t]
        ["Show Current Output Group" term-show-output t]
        ["Show Maximum Output" term-show-maximum-output t]
        ["Backward Output Group" term-previous-prompt t]
        ["Forward Output Group" term-next-prompt t]
        ["Kill Current Output Group" term-kill-output t]))
    map)
  "Keymap for Term mode.")

(defvar term-escape-char nil
  "Escape character for char sub-mode of term mode.
Do not change it directly; use `term-set-escape-char' instead.")

(defvar term-pager-break-map
  (let ((map (make-keymap)))
    ;; (dotimes (i 128)
    ;;   (define-key map (make-string 1 i) 'term-send-raw))
    (define-key map "\e" (lookup-key (current-global-map) "\e"))
    (define-key map "\C-x" (lookup-key (current-global-map) "\C-x"))
    (define-key map "\C-u" (lookup-key (current-global-map) "\C-u"))
    (define-key map " " 'term-pager-page)
    (define-key map "\r" 'term-pager-line)
    (define-key map "?" 'term-pager-help)
    (define-key map "h" 'term-pager-help)
    (define-key map "b" 'term-pager-back-page)
    (define-key map "\177" 'term-pager-back-line)
    (define-key map "q" 'term-pager-discard)
    (define-key map "D" 'term-pager-disable)
    (define-key map "<" 'term-pager-bob)
    (define-key map ">" 'term-pager-eob)
    map)
  "Keymap used in Term pager mode.")

(defvar term-ptyp t
  "Non-nil if communications via pty; false if by pipe.  Buffer local.
This is to work around a bug in Emacs process signaling.")

(defvar term-last-input-match ""
  "Last string searched for by term input history search, for defaulting.
Buffer local variable.")

(defvar term-input-ring nil)
(defvar term-last-input-start)
(defvar term-last-input-end)
(defvar term-input-ring-index nil
  "Index of last matched history element.")
(defvar term-matching-input-from-input-string ""
  "Input previously used to match input history.")
; This argument to set-process-filter disables reading from the process.
(defvar term-pager-filter t)

(put 'term-input-ring 'permanent-local t)
(put 'term-input-ring-index 'permanent-local t)
(put 'term-input-autoexpand 'permanent-local t)
(put 'term-input-filter-functions 'permanent-local t)
(put 'term-scroll-to-bottom-on-output 'permanent-local t)
(put 'term-scroll-show-maximum-output 'permanent-local t)
(put 'term-ptyp 'permanent-local t)

(defmacro term-in-char-mode () '(eq (current-local-map) term-raw-map))
(defmacro term-in-line-mode () '(not (term-in-char-mode)))
;; True if currently doing PAGER handling.
(defmacro term-pager-enabled () 'term-pager-count)
(defmacro term-handling-pager () 'term-pager-old-local-map)
(defmacro term-using-alternate-sub-buffer () 'term-saved-home-marker)

;; Let's silence the byte-compiler -mm
(defvar term-ansi-at-host nil)
(defvar term-ansi-at-dir nil)
(defvar term-ansi-at-user nil)
(defvar term-ansi-at-message nil)
(defvar term-ansi-at-save-user nil)
(defvar term-ansi-at-save-pwd nil)
(defvar term-ansi-at-save-anon nil)
(defvar term-ansi-current-bold nil)
(defvar term-ansi-current-faint nil)
(defvar term-ansi-current-italic nil)
(defvar term-ansi-current-underline nil)
(defvar term-ansi-current-slow-blink nil)
(defvar term-ansi-current-fast-blink nil)
(defvar term-ansi-current-color 0)
(defvar term-ansi-face-already-done nil)
(defvar term-ansi-current-bg-color 0)
(defvar term-ansi-current-reverse nil)
(defvar term-ansi-current-invisible nil)

(make-obsolete-variable 'term-ansi-face-already-done
                        "it doesn't have any effect." "29.1")

;;; Faces
(defvar ansi-term-color-vector
  [term
   term-color-black
   term-color-red
   term-color-green
   term-color-yellow
   term-color-blue
   term-color-magenta
   term-color-cyan
   term-color-white
   term-color-bright-black
   term-color-bright-red
   term-color-bright-green
   term-color-bright-yellow
   term-color-bright-blue
   term-color-bright-magenta
   term-color-bright-cyan
   term-color-bright-white])

(defcustom term-default-fg-color nil
  "If non-nil, default color for foreground in Term mode."
  :group 'term
  :type '(choice (const nil) (string :tag "color")))
(make-obsolete-variable 'term-default-fg-color "use the face `term' instead."
                        "24.3")

(defcustom term-default-bg-color nil
  "If non-nil, default color for foreground in Term mode."
  :group 'term
  :type '(choice (const nil) (string :tag "color")))
(make-obsolete-variable 'term-default-bg-color "use the face `term' instead."
                        "24.3")

(defface term
  `((t
     :foreground ,term-default-fg-color
     :background ,term-default-bg-color
     :inherit default))
  "Default face to use in Term mode."
  :group 'term)

(defface term-bold
  '((t :inherit ansi-color-bold))
  "Default face to use for bold text."
  :group 'term
  :version "28.1")

(defface term-faint
  '((t :inherit ansi-color-faint))
  "Default face to use for faint text."
  :group 'term
  :version "29.1")

(defface term-italic
  '((t :inherit ansi-color-italic))
  "Default face to use for italic text."
  :group 'term
  :version "29.1")

(defface term-underline
  '((t :inherit ansi-color-underline))
  "Default face to use for underlined text."
  :group 'term
  :version "28.1")

(defface term-slow-blink
  '((t :inherit ansi-color-slow-blink))
  "Default face to use for slowly blinking text."
  :group 'term
  :version "29.1")

(defface term-fast-blink
  '((t :inherit ansi-color-fast-blink))
  "Default face to use for rapidly blinking text."
  :group 'term
  :version "29.1")

(defface term-color-black
  '((t :inherit ansi-color-black))
  "Face used to render black color code."
  :group 'term
  :version "28.1")

(defface term-color-red
  '((t :inherit ansi-color-red))
  "Face used to render red color code."
  :group 'term
  :version "28.1")

(defface term-color-green
  '((t :inherit ansi-color-green))
  "Face used to render green color code."
  :group 'term
  :version "28.1")

(defface term-color-yellow
  '((t :inherit ansi-color-yellow))
  "Face used to render yellow color code."
  :group 'term
  :version "28.1")

(defface term-color-blue
  '((t :inherit ansi-color-blue))
  "Face used to render blue color code."
  :group 'term
  :version "28.1")

(defface term-color-magenta
  '((t :inherit ansi-color-magenta))
  "Face used to render magenta color code."
  :group 'term
  :version "28.1")

(defface term-color-cyan
  '((t :inherit ansi-color-cyan))
  "Face used to render cyan color code."
  :group 'term
  :version "28.1")

(defface term-color-white
  '((t :inherit ansi-color-white))
  "Face used to render white color code."
  :group 'term
  :version "28.1")

(defface term-color-bright-black
  '((t :inherit ansi-color-bright-black))
  "Face used to render bright black color code."
  :group 'term
  :version "28.1")

(defface term-color-bright-red
  '((t :inherit ansi-color-bright-red))
  "Face used to render bright red color code."
  :group 'term
  :version "28.1")

(defface term-color-bright-green
  '((t :inherit ansi-color-bright-green))
  "Face used to render bright green color code."
  :group 'term
  :version "28.1")

(defface term-color-bright-yellow
  '((t :inherit ansi-color-bright-yellow))
  "Face used to render bright yellow color code."
  :group 'term
  :version "28.1")

(defface term-color-bright-blue
  '((t :inherit ansi-color-bright-blue))
  "Face used to render bright blue color code."
  :group 'term
  :version "28.1")

(defface term-color-bright-magenta
  '((t :inherit ansi-color-bright-magenta))
  "Face used to render bright magenta color code."
  :group 'term
  :version "28.1")

(defface term-color-bright-cyan
  '((t :inherit ansi-color-bright-cyan))
  "Face used to render bright cyan color code."
  :group 'term
  :version "28.1")

(defface term-color-bright-white
  '((t :inherit ansi-color-bright-white))
  "Face used to render bright white color code."
  :group 'term
  :version "28.1")

(defcustom term-buffer-maximum-size 8192
  "The maximum size in lines for term buffers.
Term buffers are truncated from the top to be no greater than this number.
Notice that a setting of 0 means \"don't truncate anything\".  This variable
is buffer-local."
  :group 'term
  :type 'integer
  :version "27.1")

(defcustom term-bind-function-keys nil
  "If nil, don't alter <f1>, <f2> and so on.
If non-nil, bind these keys in `term-mode' and send them to the
underlying shell."
  :type 'boolean
  :version "29.1")

\f
;; Set up term-raw-map, etc.

(defvar term-raw-map
  (let* ((map (make-keymap))
         (esc-map (make-keymap))
         (i 0))
    (while (< i 128)
      (define-key map (make-string 1 i) 'term-send-raw)
      ;; Avoid O and [. They are used in escape sequences for various keys.
      (unless (or (eq i ?O) (eq i 91))
        (define-key esc-map (make-string 1 i) 'term-send-raw-meta))
      (setq i (1+ i)))
    (define-key map [remap self-insert-command] 'term-send-raw)
    (define-key map "\e" esc-map)

    ;; Added nearly all the 'gray keys' -mm

    (define-key map [mouse-2] 'term-mouse-paste)
    (define-key map [up] 'term-send-up)
    (define-key map [down] 'term-send-down)
    (define-key map [right] 'term-send-right)
    (define-key map [left] 'term-send-left)
    (define-key map [C-up] 'term-send-ctrl-up)
    (define-key map [C-down] 'term-send-ctrl-down)
    (define-key map [C-right] 'term-send-ctrl-right)
    (define-key map [C-left] 'term-send-ctrl-left)
    (define-key map [delete] 'term-send-del)
    (define-key map [deletechar] 'term-send-del)
    (define-key map [backspace] 'term-send-backspace)
    (define-key map [home] 'term-send-home)
    (define-key map [end] 'term-send-end)
    (define-key map [insert] 'term-send-insert)
    (define-key map [S-prior] 'scroll-down)
    (define-key map [S-next] 'scroll-up)
    (define-key map [S-insert] 'term-paste)
    (define-key map [prior] 'term-send-prior)
    (define-key map [next] 'term-send-next)
    (define-key map [xterm-paste] #'term--xterm-paste)
    (define-key map [?\C-/] #'term-send-C-_)

    (when term-bind-function-keys
      (dotimes (key 21)
        (keymap-set map (format "<f%d>" key) #'term-send-function-key)))
    map)
  "Keyboard map for sending characters directly to the inferior process.")

(easy-menu-define term-terminal-menu
  (list term-mode-map term-raw-map term-pager-break-map)
  "Terminal menu for Term mode."
  '("Terminal"
    ["Line mode" term-line-mode :active (term-in-char-mode)
     :help "Switch to line (cooked) sub-mode of term mode"]
    ["Character mode" term-char-mode :active (term-in-line-mode)
     :help "Switch to char (raw) sub-mode of term mode"]
    ["Paging" term-pager-toggle :style toggle :selected term-pager-count
     :help "Toggle paging feature"]))

(defun term--update-term-menu (&optional force)
  (when (and (lookup-key term-mode-map [menu-bar terminal])
             (or force (frame-or-buffer-changed-p)))
    (let ((buffer-list
           (seq-filter
            (lambda (buffer)
              (provided-mode-derived-p (buffer-local-value 'major-mode buffer)
                                       'term-mode))
            (buffer-list))))
      (easy-menu-change
       '("Terminal")
       "Terminal Buffers"
       (mapcar
        (lambda (buffer)
          (vector (format "%s (%s)" (buffer-name buffer)
                          (abbreviate-file-name
                           (buffer-local-value 'default-directory buffer)))
                  (lambda ()
                    (interactive)
                    (switch-to-buffer buffer))))
        buffer-list)))))

(easy-menu-define term-signals-menu
 (list term-mode-map term-raw-map term-pager-break-map)
  "Signals menu for Term mode."
  '("Signals"
    ["BREAK" term-interrupt-subjob :active t
     :help "Interrupt the current subjob"]
    ["STOP" term-stop-subjob :active t :help "Stop the current subjob"]
    ["CONT" term-continue-subjob :active t
     :help "Send CONT signal to process buffer's process group"]
    ["QUIT" term-quit-subjob :active t
     :help "Send quit signal to the current subjob"]
    ["KILL" term-kill-subjob :active t
     :help "Send kill signal to the current subjob"]
    ["EOF" term-send-eof :active t
     :help "Send an EOF to the current buffer's process"]))

(easy-menu-define term-pager-menu term-pager-break-map
  "Menu for Term pager mode."
  '("More pages?"
    ["1 page forwards" term-pager-page t]
    ["1 page backwards" term-pager-back-page t]
    ["1 line backwards" term-pager-back-line t]
    ["1 line forwards" term-pager-line t]
    ["Goto to beginning" term-pager-bob t]
    ["Goto to end" term-pager-eob t]
    ["Discard remaining output" term-pager-discard t]
    ["Disable paging" term-pager-toggle t]
    ["Help" term-pager-help t]))

(defvar term-raw-escape-map
  (let ((map (make-sparse-keymap)))
    (set-keymap-parent map 'Control-X-prefix)
    ;; Define standard bindings in term-raw-escape-map.
    (define-key map "\C-v" (lookup-key (current-global-map) "\C-v"))
    (define-key map "\C-u" (lookup-key (current-global-map) "\C-u"))
    (define-key map "\C-q" 'term-pager-toggle)
    ;; The keybinding for term-char-mode is needed by the menubar code.
    (define-key map "\C-k" 'term-char-mode)
    (define-key map "\C-j" 'term-line-mode)
    ;; It's convenient to have execute-extended-command here.
    (define-key map [?\M-x] 'execute-extended-command)
    map))

(defun term-set-escape-char (key)
  "Change `term-escape-char' and keymaps that depend on it."
  (when term-escape-char
    ;; Undo previous term-set-escape-char.
    (define-key term-raw-map term-escape-char 'term-send-raw)
    (define-key term-raw-escape-map term-escape-char nil t))
  (setq term-escape-char (if (vectorp key) key (vector key)))
  (define-key term-raw-map term-escape-char term-raw-escape-map)
  (define-key term-raw-escape-map term-escape-char 'term-send-raw))

(term-set-escape-char (or term-escape-char ?\C-c))

\f
(put 'term-mode 'mode-class 'special)


;; Use this variable as a display table for `term-mode'.
(defvar term-display-table
  (let ((dt (or (copy-sequence standard-display-table)
		(make-display-table)))
        i)
    ;; avoid changing the display table for ^J
    (setq i 0)
    (while (< i 10)
      (aset dt i (vector i))
      (setq i (1+ i)))
    (setq i 11)
    (while (< i 32)
      (aset dt i (vector i))
      (setq i (1+ i)))
    (setq i 128)
    (while (< i 256)
      (aset dt i (vector i))
      (setq i (1+ i)))
    dt))

(defun term-ansi-reset ()
  (setq term-current-face 'term)
  (setq term-ansi-current-bold nil)
  (setq term-ansi-current-faint nil)
  (setq term-ansi-current-italic nil)
  (setq term-ansi-current-underline nil)
  (setq term-ansi-current-slow-blink nil)
  (setq term-ansi-current-fast-blink nil)
  (setq term-ansi-current-reverse nil)
  (setq term-ansi-current-color 0)
  (setq term-ansi-current-invisible nil)
  (setq term-ansi-current-bg-color 0))

(define-derived-mode term-mode fundamental-mode "Term"
  "Major mode for interacting with an inferior interpreter.
The interpreter name is same as buffer name, sans the asterisks.

There are two submodes: line mode and char mode.  By default, you are
in char mode.  In char sub-mode, each character (except
`term-escape-char') is sent immediately to the subprocess.
The escape character is equivalent to the usual meaning of C-x.

In line mode, you send a line of input at a time; use
\\[term-send-input] to send.

In line mode, this maintains an input history of size
`term-input-ring-size', and you can access it with the commands
\\[term-next-input], \\[term-previous-input], and
\\[term-dynamic-list-input-ring].  Input ring history expansion can be
achieved with the commands \\[term-replace-by-expanded-history] or
\\[term-magic-space].  Input ring expansion is controlled by the
variable `term-input-autoexpand', and addition is controlled by the
variable `term-input-ignoredups'.

Input to, and output from, the subprocess can cause the window to scroll to
the end of the buffer.  See variables `term-scroll-to-bottom-on-input',
and `term-scroll-to-bottom-on-output'.

If you accidentally suspend your process, use \\[term-continue-subjob]
to continue it.

This mode can be customized to create specific modes for running
particular subprocesses.  This can be done by setting the hooks
`term-input-filter-functions', `term-input-filter',
`term-input-sender' and `term-get-old-input' to appropriate functions,
and the variable `term-prompt-regexp' to the appropriate regular
expression.

Commands in raw mode:

\\{term-raw-map}

Commands in line mode:

\\{term-mode-map}

Entry to this mode runs the hooks on `term-mode-hook'."
  ;; we do not want indent to sneak in any tabs
  (setq indent-tabs-mode nil)
  (setq buffer-display-table term-display-table)
  (setq-local term-home-marker (copy-marker 0))
  (setq-local term-height (floor (window-screen-lines)))
  (setq-local term-width (window-max-chars-per-line))
  (setq-local term-last-input-start (make-marker))
  (setq-local term-last-input-end (make-marker))
  (setq-local term-last-input-match "")

  ;; These local variables are set to their local values:
  (make-local-variable 'term-saved-home-marker)
  (make-local-variable 'term-saved-cursor)
  (make-local-variable 'term-prompt-regexp)
  (make-local-variable 'term-input-ring-size)
  (make-local-variable 'term-input-ring)
  (make-local-variable 'term-input-ring-file-name)
  (make-local-variable 'term-input-ring-index)
  (unless term-input-ring
    (setq term-input-ring (make-ring term-input-ring-size)))

  ;; I'm not sure these saves are necessary but, since I
  ;; haven't tested the whole thing on a net connected machine with
  ;; a properly configured ange-ftp, I've decided to be conservative
  ;; and put them in. -mm

  (setq-local term-ansi-at-host (system-name))
  (setq-local term-ansi-at-dir default-directory)
  (setq-local term-ansi-at-message nil)

  ;; For user tracking purposes -mm
  (make-local-variable 'ange-ftp-default-user)
  (make-local-variable 'ange-ftp-default-password)
  (make-local-variable 'ange-ftp-generate-anonymous-password)

  ;; You may want to have different scroll-back sizes -mm
  (make-local-variable 'term-buffer-maximum-size)

  ;; Of course these have to be buffer-local -mm
  (make-local-variable 'term-ansi-current-bold)
  (make-local-variable 'term-ansi-current-color)
  (make-local-variable 'term-ansi-face-already-done)
  (make-local-variable 'term-ansi-current-bg-color)
  (make-local-variable 'term-ansi-current-underline)
  (make-local-variable 'term-ansi-current-reverse)
  (make-local-variable 'term-ansi-current-invisible)

  (make-local-variable 'term-terminal-undecoded-bytes)

  (make-local-variable 'term-do-line-wrapping)
  (make-local-variable 'term-kill-echo-list)
  (make-local-variable 'term-start-line-column)
  (make-local-variable 'term-current-column)
  (make-local-variable 'term-current-row)
  (make-local-variable 'term-log-buffer)
  (make-local-variable 'term-pager-count)
  (make-local-variable 'term-pager-old-local-map)
  (make-local-variable 'term-old-mode-map)
  (make-local-variable 'term-insert-mode)
  (make-local-variable 'term-completion-fignore)
  (make-local-variable 'term-get-old-input)
  (make-local-variable 'term-matching-input-from-input-string)
  (make-local-variable 'term-input-autoexpand)
  (make-local-variable 'term-input-ignoredups)
  (make-local-variable 'term-delimiter-argument-list)
  (make-local-variable 'term-input-filter)
  (make-local-variable 'term-input-sender)
  (make-local-variable 'term-eol-on-send)
  (make-local-variable 'term-scroll-to-bottom-on-output)
  (make-local-variable 'term-scroll-show-maximum-output)
  (make-local-variable 'term-ptyp)
  (setq-local term-vertical-motion 'vertical-motion)
  (setq-local term-pending-delete-marker (make-marker))
  (make-local-variable 'term-current-face)
  (term-ansi-reset)
  (add-hook 'menu-bar-update-hook 'term--update-term-menu)
  (setq-local term-pending-frame nil)
  ;; Cua-mode's keybindings interfere with the term keybindings, disable it.
  (setq-local cua-mode nil)

  (setq-local font-lock-defaults '(nil t))

  (add-function :filter-return
                (local 'filter-buffer-substring-function)
                #'term--filter-buffer-substring)
  (add-function :filter-return
                (local 'window-adjust-process-window-size-function)
                (lambda (size)
                  (when size
                    (term-reset-size (cdr size) (car size)))
                  size)
                '((name . term-maybe-reset-size)))

  (add-hook 'read-only-mode-hook #'term-line-mode-buffer-read-only-update nil t)

  (term--reset-scroll-region)

  (or term-input-ring
      (setq term-input-ring (make-ring term-input-ring-size)))
  (term-update-mode-line))
\f
(defun term--remove-fake-newlines ()
  (goto-char (point-min))
  (let (fake-newline)
    (while (setq fake-newline (next-single-property-change (point)
                                                           'term-line-wrap))
      (goto-char fake-newline)
      (cl-assert (eq ?\n (char-after)))
      (let ((inhibit-read-only t))
        (delete-char 1)))))

(defun term--last-line ()
  (1- term-height))

(defun term--filter-buffer-substring (content)
  (with-temp-buffer
    (insert content)
    (term--remove-fake-newlines)
    (buffer-string)))

(defun term--unwrap-visible-long-lines (width)
  ;; Unwrap lines longer than width using fake newlines.  Only do it
  ;; for lines that are currently visible (i.e. following the home
  ;; marker).  Invisible lines don't have to be unwrapped since they
  ;; are unreachable using the cursor movement anyway.  Not having to
  ;; unwrap the entire buffer means the runtime of this function is
  ;; bounded by the size of the screen instead of the buffer size.

  (save-excursion
    ;; We will just assume that our accounting for the home marker is
    ;; correct, i.e. programs will not try to reach any position
    ;; earlier than this marker.
    (goto-char term-home-marker)

    (move-to-column width)
    (while (not (eobp))
      (if (eolp)
          (forward-char)
        (let ((inhibit-read-only t))
          (term-unwrap-line)))
      (move-to-column width))))

(defun term-reset-size (height width)
  (when (or (/= height term-height)
            (/= width term-width))
    ;; Delete all newlines used for wrapping
    (when (/= width term-width)
      (save-excursion
        (term--remove-fake-newlines)))
    (let ((point (point))
          (home-marker (marker-position term-home-marker)))
      (setq term-height height)
      (setq term-width width)
      (setq term-start-line-column nil)
      (setq term-current-row nil)
      (setq term-current-column nil)
      (term--reset-scroll-region)
      ;; `term-set-scroll-region' causes these to be set, we have to
      ;; clear them again since we're changing point (Bug#30544).
      (term--unwrap-visible-long-lines width)
      (setq term-start-line-column nil)
      (setq term-current-row nil)
      (setq term-current-column nil)
      (goto-char point)

      (when (term-using-alternate-sub-buffer)
        (term-handle-deferred-scroll)
        ;; When using an alternative sub-buffer, the home marker should
        ;; not move forward.  Bring it back by deleting text in front of
        ;; it.
        (when (> term-home-marker home-marker)
          (let ((inhibit-read-only t))
            (delete-region home-marker term-home-marker)))))))

;; Recursive routine used to check if any string in term-kill-echo-list
;; matches part of the buffer before point.
;; If so, delete that matched part of the buffer - this suppresses echo.
;; Also, remove that string from the term-kill-echo-list.
;; We *also* remove any older string on the list, as a sanity measure,
;; in case something gets out of sync.  (Except for type-ahead, there
;; should only be one element in the list.)

(defun term-check-kill-echo-list ()
  (let ((cur term-kill-echo-list) (found nil) (save-point (point)))
    (unwind-protect
	(progn
	  (end-of-line)
	  (while cur
	    (let* ((str (car cur)) (len (length str)) (start (- (point) len)))
	      (if (and (>= start (point-min))
		       (string= str (buffer-substring start (point))))
		  (progn (delete-char (- len))
			 (setq term-kill-echo-list (cdr cur))
			 (setq term-current-column nil)
			 (setq term-current-row nil)
			 (setq term-start-line-column nil)
			 (setq cur nil found t))
		(setq cur (cdr cur))))))
      (when (not found)
	(goto-char save-point)))
    found))

(defun term-send-raw-string (chars)
  (deactivate-mark)
  (let ((proc (get-buffer-process (current-buffer))))
    (if (not proc)
	(error "Current buffer has no process")
      ;; Note that (term-current-row) must be called *after*
      ;; (point) has been updated to (process-mark proc).
      (goto-char (process-mark proc))
      (when (term-pager-enabled)
	(setq term-pager-count (term-current-row)))
      (process-send-string proc chars))))

(defun term-send-raw ()
  "Send last typed character to the terminal-emulator without any interpretation."
  (interactive)
  (let ((keys (this-command-keys)))
    (term-send-raw-string (string (aref keys (1- (length keys)))))))

(defun term-send-raw-meta ()
  (interactive)
  (let ((char last-input-event))
    (when (symbolp char)
      ;; Convert `return' to C-m, etc.
      (let ((tmp (get char 'event-symbol-elements)))
	(if tmp (setq char (car tmp)))
	(and (symbolp char)
	     (setq tmp (get char 'ascii-character))
	     (setq char tmp))))
    (when (numberp char)
      (let ((base (event-basic-type char))
	    (mods (delq 'meta (event-modifiers char))))
	(if (memq 'control mods)
	    (setq mods (delq 'shift mods)))
	(term-send-raw-string
	 (format "\e%c"
		 (event-convert-list (append mods (list base)))))))))

(defun term-mouse-paste (click)
  "Insert the primary selection at the position clicked on."
  (interactive "e")
  ;; Give temporary modes such as isearch a chance to turn off.
  (run-hooks 'mouse-leave-buffer-hook)
  (setq this-command 'yank)
  (mouse-set-point click)
  (term-send-raw-string (gui-get-primary-selection)))

(defun term-paste ()
  "Insert the last stretch of killed text at point."
  (interactive)
   (term-send-raw-string (current-kill 0)))

(defun term--xterm-paste ()
  "Insert the text pasted in an XTerm bracketed paste operation."
  (interactive)
  (term-send-raw-string (xterm--pasted-text)))

(declare-function xterm--pasted-text "term/xterm" ())

;; Which would be better:  "\e[A" or "\eOA"? readline accepts either.
;; For my configuration it's definitely better \eOA but YMMV. -mm
;; For example: vi works with \eOA while elm wants \e[A ...
;; (terminfo: kcuu1, kcud1, kcuf1, kcub1, khome, kend, kpp, knp, kdch1, kbs)
(defun term-send-up    () (interactive) (term-send-raw-string "\eOA"))
(defun term-send-down  () (interactive) (term-send-raw-string "\eOB"))
(defun term-send-right () (interactive) (term-send-raw-string "\eOC"))
(defun term-send-left  () (interactive) (term-send-raw-string "\eOD"))
(defun term-send-ctrl-up    () (interactive) (term-send-raw-string "\e[1;5A"))
(defun term-send-ctrl-down  () (interactive) (term-send-raw-string "\e[1;5B"))
(defun term-send-ctrl-right () (interactive) (term-send-raw-string "\e[1;5C"))
(defun term-send-ctrl-left  () (interactive) (term-send-raw-string "\e[1;5D"))
(defun term-send-home  () (interactive) (term-send-raw-string "\e[1~"))
(defun term-send-insert() (interactive) (term-send-raw-string "\e[2~"))
(defun term-send-end   () (interactive) (term-send-raw-string "\e[4~"))
(defun term-send-prior () (interactive) (term-send-raw-string "\e[5~"))
(defun term-send-next  () (interactive) (term-send-raw-string "\e[6~"))
(defun term-send-del   () (interactive) (term-send-raw-string "\e[3~"))
(defun term-send-backspace  () (interactive) (term-send-raw-string "\C-?"))
(defun term-send-C-_  () (interactive) (term-send-raw-string "\C-_"))

(defun term-send-function-key ()
  "If bound to a function key, this will send that key to the underlying shell."
  (interactive)
  (let ((key (this-command-keys-vector)))
    (when (and (= (length key) 1)
               (symbolp (elt key 0)))
      (let ((name (symbol-name (elt key 0))))
        (when (string-match "\\`f\\([0-9]+\\)\\'" name)
          (let* ((num (string-to-number (match-string 1 name)))
                 (ansi
                  (cond
                   ((<= num 5) (+ num 10))
                   ((<= num 10) (+ num 11))
                   ((<= num 14) (+ num 12))
                   ((<= num 16) (+ num 13))
                   ((<= num 20) (+ num 14)))))
            (when ansi
              (term-send-raw-string (format "\e[%d~" ansi)))))))))

\f
(defun term-char-mode ()
  "Switch to char (\"raw\") sub-mode of term mode.
Each character you type is sent directly to the inferior without
intervention from Emacs, except for the escape character (usually C-c)."
  (interactive)
  ;; FIXME: Emit message? Cfr ilisp-raw-message
  (when (term-in-line-mode)
    (setq term-old-mode-map (current-local-map))
    (use-local-map term-raw-map)

    ;; Don't allow changes to the buffer or to point which are not
    ;; caused by the process filter.
    (when term-char-mode-buffer-read-only
      (setq buffer-read-only t))
    (add-hook 'pre-command-hook #'term-set-goto-process-mark nil t)
    (add-hook 'post-command-hook #'term-goto-process-mark-maybe nil t)

    ;; Send existing partial line to inferior (without newline).
    (let ((pmark (process-mark (get-buffer-process (current-buffer)))))
      (when (> (point) pmark)
	(unwind-protect
	    (progn
	      (add-function :override (local 'term-input-sender)
                            #'term-send-string)
	      (end-of-line)
	      (term-send-input))
	  (remove-function (local 'term-input-sender) #'term-send-string))))
    (term-update-mode-line)))

(defun term-line-mode  ()
  "Switch to line (\"cooked\") sub-mode of term mode.
This means that Emacs editing commands work as normally, until
you type \\[term-send-input] which sends the current line to the inferior."
  (interactive)
  (when (term-in-char-mode)
    (when term-char-mode-buffer-read-only
      (setq buffer-read-only term-line-mode-buffer-read-only))
    (remove-hook 'pre-command-hook #'term-set-goto-process-mark t)
    (remove-hook 'post-command-hook #'term-goto-process-mark-maybe t)
    (use-local-map term-old-mode-map)
    (term-update-mode-line)))

(defun term-line-mode-buffer-read-only-update ()
  "Update the user-set state of `buffer-read-only' in `term-line-mode'.

Called as a buffer-local `read-only-mode-hook' function."
  (when (term-in-line-mode)
    (setq term-line-mode-buffer-read-only buffer-read-only)))

(defun term-update-mode-line ()
  (let ((term-mode
         (if (term-in-char-mode)
             (propertize "char"
                         'help-echo "mouse-1: Switch to line mode"
                         'mouse-face 'mode-line-highlight
                         'local-map
                         '(keymap
                           (mode-line keymap (down-mouse-1 . term-line-mode))))
           (propertize "line"
                       'help-echo "mouse-1: Switch to char mode"
                       'mouse-face 'mode-line-highlight
                       'local-map
                       '(keymap
                         (mode-line keymap (down-mouse-1 . term-char-mode))))))
        (term-page
         (when (term-pager-enabled)
           (concat " "
                   (propertize
                    "page"
                    'help-echo "mouse-1: Disable paging"
                    'mouse-face 'mode-line-highlight
                    'local-map
                    '(keymap
                      (mode-line keymap (down-mouse-1 .
                                                      term-pager-toggle)))))))
        (serial-item-speed)
        (serial-item-config)
        (proc (get-buffer-process (current-buffer))))
    (when (and (term-check-proc (current-buffer))
               (equal (process-type nil) 'serial))
      (let ((temp (serial-speed)))
        (setq serial-item-speed
            `(:propertize
              ,(or (and temp (format " %d" temp)) "")
              help-echo "mouse-1: Change the speed of the serial port"
              mouse-face mode-line-highlight
              local-map (keymap (mode-line keymap
                                (down-mouse-1 . serial-mode-line-speed-menu-1))))))
      (let ((temp (process-contact proc :summary)))
        (setq serial-item-config
              `(:propertize
                ,(or (and temp (format " %s" temp)) "")
                help-echo "mouse-1: Change the configuration of the serial port"
                mouse-face mode-line-highlight
                local-map (keymap (mode-line keymap
                           (down-mouse-1 . serial-mode-line-config-menu-1)))))))
    (setq mode-line-process
          (list ": " term-mode term-page
                serial-item-speed
                serial-item-config
                " %s")))
  (force-mode-line-update))

(defun term-check-proc (buffer)
  "Non-nil if there is a process associated w/buffer BUFFER, and it is alive.
BUFFER can be either a buffer or the name of one."
  (let ((proc (get-buffer-process buffer)))
    (and proc (memq (process-status proc) '(run stop open listen connect)))))

;;;###autoload
(defun make-term (name program &optional startfile &rest switches)
"Make a term process NAME in a buffer, running PROGRAM.
The name of the buffer is made by surrounding NAME with `*'s.
If there is already a running process in that buffer, it is not restarted.
Optional third arg STARTFILE is the name of a file to send the contents of to
the process.  Any more args are arguments to PROGRAM."
  (let ((buffer (get-buffer-create (concat "*" name "*"))))
    ;; If no process, or nuked process, crank up a new one and put buffer in
    ;; term mode.  Otherwise, leave buffer and existing process alone.
    (cond ((not (term-check-proc buffer))
	   (with-current-buffer buffer
	     (term-mode)) ; Install local vars, mode, keymap, ...
	   (term-exec buffer name program startfile switches)))
    buffer))

;;;###autoload
(defun term (program)
  "Start a terminal-emulator in a new buffer.
The buffer is in Term mode; see `term-mode' for the
commands to use in that buffer.

\\<term-raw-map>Type \\[switch-to-buffer] to switch to another buffer."
  (interactive (list (read-shell-command "Run program: "
					 (or explicit-shell-file-name
					     (getenv "ESHELL")
					     shell-file-name))))
  (let ((prog (split-string-shell-command program)))
    (set-buffer (apply #'make-term "terminal" (car prog) nil (cdr prog))))
  (term-char-mode)
  (pop-to-buffer-same-window "*terminal*"))

(defun term-exec (buffer name command startfile switches)
  "Start up a process in buffer for term modes.
Blasts any old process running in the buffer.  Doesn't set the buffer mode.
You can use this to cheaply run a series of processes in the same term
buffer.  The hook `term-exec-hook' is run after each exec."
  (with-current-buffer buffer
    (let ((proc (get-buffer-process buffer))) ; Blast any old process.
      (when proc (delete-process proc)))
    ;; Crank up a new process
    (let ((proc (term-exec-1 name buffer command switches)))
      (setq-local term-ptyp process-connection-type) ; t if pty, nil if pipe.
      ;; Jump to the end, and set the process mark.
      (goto-char (point-max))
      (set-marker (process-mark proc) (point))
      (set-process-filter proc #'term-emulate-terminal)
      (set-process-sentinel proc #'term-sentinel)
      ;; Feed it the startfile.
      (when startfile
        ;;This is guaranteed to wait long enough
        ;;but has bad results if the term does not prompt at all
        ;;	     (while (= size (buffer-size))
        ;;	       (sleep-for 1))
        ;;I hope 1 second is enough!
        (sleep-for 1)
        (goto-char (point-max))
        (insert-file-contents startfile)
	(term-send-string
	 proc (delete-and-extract-region (point) (point-max)))))
    (run-hooks 'term-exec-hook)
    buffer))

(defun term-sentinel (proc msg)
  "Sentinel for term buffers.
The main purpose is to get rid of the local keymap."
  (let ((buffer (process-buffer proc)))
    (when (memq (process-status proc) '(signal exit))
      (if (null (buffer-name buffer))
	  ;; buffer killed
	  (set-process-buffer proc nil)
	(with-current-buffer buffer
          ;; Write something in the compilation buffer
          ;; and hack its mode line.
          ;; Get rid of local keymap.
          (use-local-map nil)
          (term-handle-exit (process-name proc) msg)
          ;; Since the buffer and mode line will show that the
          ;; process is dead, we can delete it now.  Otherwise it
          ;; will stay around until M-x list-processes.
          (delete-process proc))))))

(defun term-handle-exit (process-name msg)
  "Write process exit (or other change) message MSG in the current buffer."
  (let ((buffer-read-only nil)
	(omax (point-max))
	(opoint (point)))
    ;; Remove hooks to avoid errors due to dead process.
    (remove-hook 'pre-command-hook #'term-set-goto-process-mark t)
    (remove-hook 'post-command-hook #'term-goto-process-mark-maybe t)
    ;; Record where we put the message, so we can ignore it
    ;; later on.
    (goto-char omax)
    (insert ?\n "Process " process-name " " msg)
    ;; Force mode line redisplay soon.
    (force-mode-line-update)
    (when (and opoint (< opoint omax))
      (goto-char opoint))))


(defvar term-term-name "eterm-color"
  "Name to use for TERM.
Using \"emacs\" loses, because bash disables editing if $TERM == emacs.")
;; Format string, usage:
;; (format term-termcap-string emacs-term-name "TERMCAP=" 24 80)
(defvar term-termcap-format
  "%s%s:li#%d:co#%d:cl=\\E[H\\E[J:cd=\\E[J:bs:am:xn:cm=\\E[%%i%%d;%%dH\
:nd=\\E[C:up=\\E[A:ce=\\E[K:ho=\\E[H:pt\
:al=\\E[L:dl=\\E[M:DL=\\E[%%dM:AL=\\E[%%dL:cs=\\E[%%i%%d;%%dr:sf=^J\
:NR:te=\\E[47l:ti=\\E[47h\
:dc=\\E[P:DC=\\E[%%dP:IC=\\E[%%d@:im=\\E[4h:ei=\\E[4l:mi:\
:mb=\\E[5m:mh=\\E[2m:ZR=\\E[23m:ZH=\\E[3m\
:so=\\E[7m:se=\\E[m:us=\\E[4m:ue=\\E[m:md=\\E[1m:mr=\\E[7m:me=\\E[m\
:UP=\\E[%%dA:DO=\\E[%%dB:LE=\\E[%%dD:RI=\\E[%%dC\
:kl=\\EOD:kd=\\EOB:kr=\\EOC:ku=\\EOA:kN=\\E[6~:kP=\\E[5~:@7=\\E[4~:kh=\\E[1~\
:mk=\\E[8m:cb=\\E[1K:op=\\E[39;49m:Co#256:pa#32767\
:AB=\\E[48;5;%%dm:AF=\\E[38;5;%%dm:cr=^M\
:bl=^G:do=^J:le=^H:ta=^I:se=\\E[27m:ue=\\E[24m\
:kb=^?:kD=^[[3~:sc=\\E7:rc=\\E8:r1=\\Ec:"
  ;; : -undefine ic
  ;; don't define :te=\\E[2J\\E[?47l\\E8:ti=\\E7\\E[?47h\
  "Termcap capabilities supported.")

;; This private hack is for backwards compatibility with Bash 4.3 and earlier.
;; It can be useful even when running a program other than Bash, as the
;; program might invoke Bash as an interactive subshell.  See this thread:
;; https://lists.gnu.org/r/emacs-devel/2018-05/msg00670.html
;; Remove this hack and its uses once Bash 4.4-or-later is reasonably
;; universal, because it slows down execution slightly when
;; term--bash-needs-EMACSp is first called.
(defvar term--bash-needs-EMACS-status nil
  "43 if Bash is so old that it needs EMACS set.
Some other integer if Bash is new or not in use.
Nil if unknown.")
(defun term--bash-needs-EMACSp ()
  "Return t if Bash is old, nil if it is new or not in use."
  (eq 43
      (or term--bash-needs-EMACS-status
          (setf
           term--bash-needs-EMACS-status
           (let ((process-environment
                  (cons "BASH_ENV" process-environment)))
             (condition-case nil
                 (call-process
                  "bash" nil nil nil "-c"
                  "case $BASH_VERSION in [0123].*|4.[0123].*) exit 43;; esac")
               (error 0)))))))

;; This auxiliary function cranks up the process for term-exec in
;; the appropriate environment.

(defun term-exec-1 (name buffer command switches)
  ;; We need to do an extra (fork-less) exec to run stty.
  ;; (This would not be needed if we had suitable Emacs primitives.)
  ;; The 'if ...; then shift; fi' hack is because Bourne shell
  ;; loses one arg when called with -c, and newer shells (bash,  ksh) don't.
  ;; Thus we add an extra dummy argument "..", and then remove it.
  (let ((process-environment
	 (nconc
	  (list
	   (format "TERM=%s" term-term-name)
	   (format "TERMINFO=%s" data-directory)
	   (format term-termcap-format "TERMCAP="
		   term-term-name term-height term-width)

	   (format "INSIDE_EMACS=%s,term:%s"
                   emacs-version term-protocol-version))
          (when term-set-terminal-size
            (list
             (format "LINES=%d" term-height)
	     (format "COLUMNS=%d" term-width)))
	  process-environment))
	(process-connection-type t)
	;; We should suppress conversion of end-of-line format.
	(inhibit-eol-conversion t)
	;; The process's output contains not just chars but also binary
	;; escape codes, so we need to see the raw output.  We will have to
	;; do the decoding by hand on the parts that are made of chars.
	(coding-system-for-read 'binary))
    (when (term--bash-needs-EMACSp)
      (push (format "EMACS=%s (term:%s)" emacs-version term-protocol-version)
            process-environment))
    (apply #'start-process name buffer
	   "/bin/sh" "-c"
	   (format "stty -nl echo rows %d columns %d sane 2>%s;\
if [ $1 = .. ]; then shift; fi; exec \"$@\""
		   term-height term-width null-device)
	   ".."
	   command switches)))

\f
;;; Input history processing in a buffer
;; ===========================================================================
;; Useful input history functions, courtesy of the Ergo group.

;; Eleven commands:
;; term-dynamic-list-input-ring	List history in help buffer.
;; term-previous-input			Previous input...
;; term-previous-matching-input		...matching a string.
;; term-previous-matching-input-from-input ... matching the current input.
;; term-next-input			Next input...
;; term-next-matching-input		...matching a string.
;; term-next-matching-input-from-input     ... matching the current input.
;; term-backward-matching-input		Backwards input...
;; term-forward-matching-input       ...matching a string.
;; term-replace-by-expanded-history	Expand history at point;
;;					replace with expanded history.
;; term-magic-space			Expand history and insert space.
;;
;; Three functions:
;; term-read-input-ring              Read into term-input-ring...
;; term-write-input-ring             Write to term-input-ring-file-name.
;; term-replace-by-expanded-history-before-point Workhorse function.

(defun term-read-input-ring (&optional silent)
  "Set the buffer's `term-input-ring' from a history file.
The name of the file is given by the variable `term-input-ring-file-name'.
The history ring is of size `term-input-ring-size', regardless of file size.
If `term-input-ring-file-name' is nil this function does nothing.

If the optional argument SILENT is non-nil, we say nothing about a
failure to read the history file.

This function is useful for major mode commands and mode hooks.

The structure of the history file should be one input command per line,
with the most recent command last.
See also `term-input-ignoredups' and `term-write-input-ring'."
  (cond ((or (null term-input-ring-file-name)
	     (equal term-input-ring-file-name ""))
	 nil)
	((not (file-readable-p term-input-ring-file-name))
	 (or silent
	     (message "Cannot read history file %s"
		      term-input-ring-file-name)))
	(t
	 (let ((file term-input-ring-file-name)
	       (count 0)
	       (ring (make-ring term-input-ring-size)))
           (with-temp-buffer
             (insert-file-contents file)
             ;; Save restriction in case file is already visited...
             ;; Watch for those date stamps in history files!
             (goto-char (point-max))
             (while (and (< count term-input-ring-size)
                         (re-search-backward "^[ \t]*\\([^#\n].*\\)[ \t]*$"
                                             nil t))
               (let ((history (buffer-substring (match-beginning 1)
                                                (match-end 1))))
                 (when (or (null term-input-ignoredups)
                           (ring-empty-p ring)
                           (not (string-equal (ring-ref ring 0) history)))
                   (ring-insert-at-beginning ring history)))
               (setq count (1+ count))))
	   (setq term-input-ring ring
		 term-input-ring-index nil)))))

(defun term-write-input-ring ()
  "Write the buffer's `term-input-ring' to a history file.
The name of the file is given by the variable `term-input-ring-file-name'.
The original contents of the file are lost if `term-input-ring' is not empty.
If `term-input-ring-file-name' is nil this function does nothing.

Useful within process sentinels.

See also `term-read-input-ring'."
  (cond ((or (null term-input-ring-file-name)
	     (equal term-input-ring-file-name "")
	     (null term-input-ring) (ring-empty-p term-input-ring))
	 nil)
	((not (file-writable-p term-input-ring-file-name))
	 (message "Cannot write history file %s" term-input-ring-file-name))
	(t
	 (let* ((history-buf (get-buffer-create " *Temp Input History*"))
		(ring term-input-ring)
		(file term-input-ring-file-name)
		(index (ring-length ring)))
	   ;; Write it all out into a buffer first.  Much faster, but messier,
	   ;; than writing it one line at a time.
	   (with-current-buffer history-buf
	     (erase-buffer)
	     (while (> index 0)
	       (setq index (1- index))
	       (insert (ring-ref ring index) ?\n))
	     (write-region (buffer-string) nil file nil 'no-message)
	     (kill-buffer nil))))))


(defun term-dynamic-list-input-ring ()
  "List in help buffer the buffer's input history."
  (interactive)
  (if (or (not (ring-p term-input-ring))
	  (ring-empty-p term-input-ring))
      (message "No history")
    (let ((history nil)
	  (history-buffer " *Input History*")
	  (index (1- (ring-length term-input-ring)))
	  (conf (current-window-configuration)))
      ;; We have to build up a list ourselves from the ring vector.
      (while (>= index 0)
	(setq history (cons (ring-ref term-input-ring index) history)
	      index (1- index)))
      ;; Change "completion" to "history reference"
      ;; to make the display accurate.
      (with-output-to-temp-buffer history-buffer
	(display-completion-list history)
	(set-buffer history-buffer)
	(forward-line 3)
	(while (search-backward "completion" nil 'move)
	  (replace-match "history reference")))
      (sit-for 0)
      (message "Hit space to flush")
      (let ((ch (read-event)))
	(if (eq ch ?\s)
	    (set-window-configuration conf)
	  (push ch unread-command-events))))))


(defun term-regexp-arg (prompt)
  ;; Return list of regexp and prefix arg using PROMPT.
  (let* (;; Don't clobber this.
	 (last-command last-command)
	 (regexp (read-from-minibuffer prompt nil nil nil
				       'minibuffer-history-search-history)))
    (list (if (string-equal regexp "")
	      (setcar minibuffer-history-search-history
		      (nth 1 minibuffer-history-search-history))
	    regexp)
	  (prefix-numeric-value current-prefix-arg))))

(defun term-search-arg (arg)
  ;; First make sure there is a ring and that we are after the process mark
  (cond ((not (term-after-pmark-p))
	 (error "Not at command line"))
	((or (null term-input-ring)
	     (ring-empty-p term-input-ring))
	 (error "Empty input ring"))
	((zerop arg)
	 ;; arg of zero resets search from beginning, and uses arg of 1
	 (setq term-input-ring-index nil)
	 1)
	(t
	 arg)))

(defun term-search-start (arg)
  ;; Index to start a directional search, starting at term-input-ring-index
  (if term-input-ring-index
      ;; If a search is running, offset by 1 in direction of arg
      (mod (+ term-input-ring-index (if (> arg 0) 1 -1))
	   (ring-length term-input-ring))
    ;; For a new search, start from beginning or end, as appropriate
    (if (>= arg 0)
	0				       ; First elt for forward search
      (1- (ring-length term-input-ring)))))  ; Last elt for backward search

(defun term-previous-input-string (arg)
  "Return the string ARG places along the input ring.
Moves relative to `term-input-ring-index'."
  (ring-ref term-input-ring (if term-input-ring-index
				  (mod (+ arg term-input-ring-index)
				       (ring-length term-input-ring))
				arg)))

(defun term-previous-input (arg)
  "Cycle backwards through input history."
  (interactive "*p")
  (term-previous-matching-input "." arg))

(defun term-next-input (arg)
  "Cycle forwards through input history."
  (interactive "*p")
  (term-previous-input (- arg)))

(defun term-previous-matching-input-string (regexp arg)
  "Return the string matching REGEXP ARG places along the input ring.
Moves relative to `term-input-ring-index'."
  (let* ((pos (term-previous-matching-input-string-position regexp arg)))
    (when pos (ring-ref term-input-ring pos))))

(defun term-previous-matching-input-string-position
  (regexp arg &optional start)
  "Return the index matching REGEXP ARG places along the input ring.
Moves relative to START, or `term-input-ring-index'."
  (when (or (not (ring-p term-input-ring))
	    (ring-empty-p term-input-ring))
    (error "No history"))
  (let* ((len (ring-length term-input-ring))
	 (motion (if (> arg 0) 1 -1))
	 (n (mod (- (or start (term-search-start arg)) motion) len))
	 (tried-each-ring-item nil)
	 (prev nil))
    ;; Do the whole search as many times as the argument says.
    (while (and (/= arg 0) (not tried-each-ring-item))
      ;; Step once.
      (setq prev n
	    n (mod (+ n motion) len))
      ;; If we haven't reached a match, step some more.
      (while (and (< n len) (not tried-each-ring-item)
		  (not (string-match regexp (ring-ref term-input-ring n))))
	(setq n (mod (+ n motion) len)
	      ;; If we have gone all the way around in this search.
	      tried-each-ring-item (= n prev)))
      (setq arg (if (> arg 0) (1- arg) (1+ arg))))
    ;; Now that we know which ring element to use, if we found it, return that.
    (when (string-match regexp (ring-ref term-input-ring n))
      n)))

(defun term-previous-matching-input (regexp n)
  "Search backwards through input history for match for REGEXP.
\(Previous history elements are earlier commands.)
With prefix argument N, search for Nth previous match.
If N is negative, find the next or Nth next match."
  (interactive (term-regexp-arg "Previous input matching (regexp): "))
  (setq n (term-search-arg n))
  (let ((pos (term-previous-matching-input-string-position regexp n)))
    ;; Has a match been found?
    (if (null pos)
	(error "Not found")
      (setq term-input-ring-index pos)
      (message "History item: %d" (1+ pos))
      (delete-region
       ;; Can't use kill-region as it sets this-command
       (process-mark (get-buffer-process (current-buffer))) (point))
      (insert (ring-ref term-input-ring pos)))))

(defun term-next-matching-input (regexp n)
  "Search forwards through input history for match for REGEXP.
\(Later history elements are more recent commands.)
With prefix argument N, search for Nth following match.
If N is negative, find the previous or Nth previous match."
  (interactive (term-regexp-arg "Next input matching (regexp): "))
  (term-previous-matching-input regexp (- n)))

(defun term-previous-matching-input-from-input (n)
  "Search backwards through input history for match for current input.
\(Previous history elements are earlier commands.)
With prefix argument N, search for Nth previous match.
If N is negative, search forwards for the -Nth following match."
  (interactive "p")
  (when (not (memq last-command '(term-previous-matching-input-from-input
				term-next-matching-input-from-input)))
    ;; Starting a new search
    (setq term-matching-input-from-input-string
	  (buffer-substring
	   (process-mark (get-buffer-process (current-buffer)))
	   (point))
	  term-input-ring-index nil))
  (term-previous-matching-input
   (concat "^" (regexp-quote term-matching-input-from-input-string))
   n))

(defun term-next-matching-input-from-input (n)
  "Search forwards through input history for match for current input.
\(Following history elements are more recent commands.)
With prefix argument N, search for Nth following match.
If N is negative, search backwards for the -Nth previous match."
  (interactive "p")
  (term-previous-matching-input-from-input (- n)))


(defun term-replace-by-expanded-history (&optional silent)
  "Expand input command history references before point.
Expansion is dependent on the value of `term-input-autoexpand'.

This function depends on the buffer's idea of the input history, which may not
match the command interpreter's idea, assuming it has one.

Assumes history syntax is like typical Un*x shells'.  However, since Emacs
cannot know the interpreter's idea of input line numbers, assuming it has one,
it cannot expand absolute input line number references.

If the optional argument SILENT is non-nil, never complain
even if history reference seems erroneous.

See `term-magic-space' and `term-replace-by-expanded-history-before-point'.

Returns t if successful."
  (interactive)
  (when (and term-input-autoexpand
	     (string-match "[!^]" (funcall term-get-old-input))
	     (save-excursion (beginning-of-line)
			     (looking-at term-prompt-regexp)))
    ;; Looks like there might be history references in the command.
    (let ((previous-modified-tick (buffer-modified-tick)))
      (message "Expanding history references...")
      (term-replace-by-expanded-history-before-point silent)
      (/= previous-modified-tick (buffer-modified-tick)))))


(defun term-replace-by-expanded-history-before-point (silent)
  "Expand directory stack reference before point.
See `term-replace-by-expanded-history'.  Returns t if successful."
  (save-excursion
    (let ((toend (- (line-end-position) (point)))
	  (start (progn (term-bol nil) (point))))
      (while (progn
	       (skip-chars-forward "^!^" (- (line-end-position) toend))
	       (< (point) (- (line-end-position) toend)))
	;; This seems a bit complex.  We look for references such as !!, !-num,
	;; !foo, !?foo, !{bar}, !?{bar}, ^oh, ^my^, ^god^it, ^never^ends^.
	;; If that wasn't enough, the plings can be suffixed with argument
	;; range specifiers.
	;; Argument ranges are complex too, so we hive off the input line,
	;; referenced with plings, with the range string to `term-args'.
	(setq term-input-ring-index nil)
	(cond ((or (= (preceding-char) ?\\)
		   (term-within-quotes start (point)))
	       ;; The history is quoted, or we're in quotes.
	       (goto-char (1+ (point))))
	      ((looking-at "![0-9]+\\($\\|[^-]\\)")
	       ;; We cannot know the interpreter's idea of input line numbers.
	       (goto-char (match-end 0))
	       (message "Absolute reference cannot be expanded"))
	      ((looking-at "!-\\([0-9]+\\)\\(:?[0-9^$*-]+\\)?")
	       ;; Just a number of args from `number' lines backward.
	       (let ((number (1- (string-to-number
				  (buffer-substring (match-beginning 1)
						    (match-end 1))))))
		 (if (<= number (ring-length term-input-ring))
		     (progn
		       (replace-match
			(term-args (term-previous-input-string number)
				     (match-beginning 2) (match-end 2))
			t t)
		       (setq term-input-ring-index number)
		       (message "History item: %d" (1+ number)))
		   (goto-char (match-end 0))
		   (message "Relative reference exceeds input history size"))))
	      ((or (looking-at "!!?:?\\([0-9^$*-]+\\)") (looking-at "!!"))
	       ;; Just a number of args from the previous input line.
	       (replace-match
		(term-args (term-previous-input-string 0)
			     (match-beginning 1) (match-end 1))
		t t)
	       (message "History item: previous"))
	      ((looking-at
		"!\\??\\({\\(.+\\)}\\|\\(\\sw+\\)\\)\\(:?[0-9^$*-]+\\)?")
	       ;; Most recent input starting with or containing (possibly
	       ;; protected) string, maybe just a number of args.  Phew.
	       (let* ((mb1 (match-beginning 1)) (me1 (match-end 1))
		      (mb2 (match-beginning 2)) (me2 (match-end 2))
		      (exp (buffer-substring (or mb2 mb1) (or me2 me1)))
		      (pref (if (save-match-data (looking-at "!\\?")) "" "^"))
		      (pos (save-match-data
			     (term-previous-matching-input-string-position
			      (concat pref (regexp-quote exp)) 1))))
		 (if (null pos)
		     (progn
		       (goto-char (match-end 0))
		       (or silent
			   (progn (message "Not found")
				  (ding))))
		   (setq term-input-ring-index pos)
		   (replace-match
		    (term-args (ring-ref term-input-ring pos)
				 (match-beginning 4) (match-end 4))
		    t t)
		   (message "History item: %d" (1+ pos)))))
	      ((looking-at "\\^\\([^^]+\\)\\^?\\([^^]*\\)\\^?")
	       ;; Quick substitution on the previous input line.
	       (let ((old (buffer-substring (match-beginning 1) (match-end 1)))
		     (new (buffer-substring (match-beginning 2) (match-end 2)))
		     (pos nil))
		 (replace-match (term-previous-input-string 0) t t)
		 (setq pos (point))
		 (goto-char (match-beginning 0))
		 (if (not (search-forward old pos t))
		     (or silent
			 (error "Not found"))
		   (replace-match new t t)
		   (message "History item: substituted"))))
	      (t
	       (goto-char (match-end 0))))))))


(defun term-magic-space (arg)
  "Expand input history references before point and insert ARG spaces.
A useful command to bind to SPC.  See `term-replace-by-expanded-history'."
  (interactive "p")
  (term-replace-by-expanded-history)
  (self-insert-command arg))
\f
(defun term-within-quotes (beg end)
  "Return t if the number of quotes between BEG and END is odd.
Quotes are single and double."
  (let ((countsq (term-how-many-region "\\(^\\|[^\\]\\)'" beg end))
	(countdq (term-how-many-region "\\(^\\|[^\\]\\)\"" beg end)))
    (or (= (mod countsq 2) 1) (= (mod countdq 2) 1))))

(defun term-how-many-region (regexp beg end)
  "Return number of matches for REGEXP from BEG to END."
  (let ((count 0))
    (save-excursion
      (save-match-data
	(goto-char beg)
	(while (re-search-forward regexp end t)
	  (setq count (1+ count)))))
    count))

(defun term-args (string begin end)
  ;; From STRING, return the args depending on the range specified in the text
  ;; from BEGIN to END.  If BEGIN is nil, assume all args.  Ignore leading `:'.
  ;; Range can be x-y, x-, -y, where x/y can be [0-9], *, ^, $.
  (save-match-data
    (if (null begin)
	(term-arguments string 0 nil)
      (let* ((range (buffer-substring
		     (if (eq (char-after begin) ?:) (1+ begin) begin) end))
	     (nth (cond ((string-match "^[*^]" range) 1)
			((string-match "^-" range) 0)
			((string-equal range "$") nil)
			(t (string-to-number range))))
	     (mth (cond ((string-match "[-*$]$" range) nil)
			((string-match "-" range)
			 (string-to-number (substring range (match-end 0))))
			(t nth))))
	(term-arguments string nth mth)))))

;; Return a list of arguments from ARG.  Break it up at the
;; delimiters in term-delimiter-argument-list.  Returned list is backwards.
(defun term-delim-arg (arg)
  (if (null term-delimiter-argument-list)
      (list arg)
    (let ((args nil)
	  (pos 0)
	  (len (length arg)))
      (while (< pos len)
	(let ((char (aref arg pos))
	      (start pos))
	  (if (memq char term-delimiter-argument-list)
	      (while (and (< pos len) (eq (aref arg pos) char))
		(setq pos (1+ pos)))
	    (while (and (< pos len)
			(not (memq (aref arg pos)
				   term-delimiter-argument-list)))
	      (setq pos (1+ pos))))
	  (setq args (cons (substring arg start pos) args))))
      args)))

(defun term-arguments (string nth mth)
  "Return from STRING the NTH to MTH arguments.
NTH and/or MTH can be nil, which means the last argument.
Returned arguments are separated by single spaces.
We assume whitespace separates arguments, except within quotes.
Also, a run of one or more of a single character
in `term-delimiter-argument-list' is a separate argument.
Argument 0 is the command name."
  (let ((argpart "[^ \n\t\"'`]+\\|\\(\"[^\"]*\"\\|'[^']*'\\|`[^`]*`\\)")
	(args ()) (pos 0)
	(count 0)
	beg str quotes)
    ;; Build a list of all the args until we have as many as we want.
    (while (and (or (null mth) (<= count mth))
		(string-match argpart string pos))
      (if (and beg (= pos (match-beginning 0)))
	  ;; It's contiguous, part of the same arg.
	  (setq pos (match-end 0)
		quotes (or quotes (match-beginning 1)))
	;; It's a new separate arg.
	(if beg
	    ;; Put the previous arg, if there was one, onto ARGS.
	    (setq str (substring string beg pos)
		  args (if quotes (cons str args)
			 (nconc (term-delim-arg str) args))
		  count (1+ count)))
	(setq quotes (match-beginning 1))
	(setq beg (match-beginning 0))
	(setq pos (match-end 0))))
    (if beg
	(setq str (substring string beg pos)
	      args (if quotes (cons str args)
		     (nconc (term-delim-arg str) args))
	      count (1+ count)))
    (let ((n (or nth (1- count)))
	  (m (if mth (1- (- count mth)) 0)))
      (mapconcat
       #'identity (nthcdr n (nreverse (nthcdr m args))) " "))))
\f
;;;
;;; Input processing stuff [line mode]
;;;

(defun term-send-input ()
  "Send input to process.
After the process output mark, sends all text from the process mark to
point as input to the process.  Before the process output mark, calls value
of variable `term-get-old-input' to retrieve old input, copies it to the
process mark, and sends it.  A terminal newline is also inserted into the
buffer and sent to the process.  The functions in `term-input-filter-functions'
are called on the input before sending it.

The input is entered into the input history ring, if the value of variable
`term-input-filter' returns non-nil when called on the input.  Any history
reference may be expanded depending on the value of the variable
`term-input-autoexpand'.

If variable `term-eol-on-send' is non-nil, then point is moved to the
end of line before sending the input.

The values of `term-get-old-input', `term-input-filter-functions', and
`term-input-filter' are chosen according to the command interpreter running
in the buffer.  E.g.,

If the interpreter is the csh,
    `term-get-old-input' is the default: take the current line, discard any
        initial string matching regexp `term-prompt-regexp'.
    `term-input-filter-functions' monitors input for \"cd\", \"pushd\", and
	\"popd\" commands.  When it sees one, it cd's the buffer.
    `term-input-filter' is the default: returns t if the input isn't all white
	space.

If the term is Lucid Common Lisp,
    `term-get-old-input' snarfs the sexp ending at point.
    `term-input-filter-functions' does nothing.
    `term-input-filter' returns nil if the input matches input-filter-regexp,
        which matches (1) all whitespace (2) :a, :c, etc.

Similarly for Soar, Scheme, etc."
  (interactive)
  ;; Note that the input string does not include its terminal newline.
  (let ((proc (get-buffer-process (current-buffer))))
    (if (not proc) (error "Current buffer has no process")
      (let* ((pmark (process-mark proc))
	     (pmark-val (marker-position pmark))
	     (input-is-new (>= (point) pmark-val))
	     (intxt (if input-is-new
			(progn (if term-eol-on-send (end-of-line))
			       (buffer-substring pmark (point)))
		      (funcall term-get-old-input)))
	     (input (if (not (eq term-input-autoexpand 'input))
			;; Just whatever's already there
			intxt
		      ;; Expand and leave it visible in buffer
		      (term-replace-by-expanded-history t)
		      (buffer-substring pmark (point))))
	     (history (if (not (eq term-input-autoexpand 'history))
			  input
			;; This is messy 'cos ultimately the original
			;; functions used do insertion, rather than return
			;; strings.  We have to expand, then insert back.
			(term-replace-by-expanded-history t)
			(let ((copy (buffer-substring pmark (point))))
			  (delete-region pmark (point))
			  (insert input)
			  copy))))
	(when (term-pager-enabled)
	  (save-excursion
	    (goto-char (process-mark proc))
	    (setq term-pager-count (term-current-row))))
	(when (and (funcall term-input-filter history)
		   (or (null term-input-ignoredups)
		       (not (ring-p term-input-ring))
		       (ring-empty-p term-input-ring)
		       (not (string-equal (ring-ref term-input-ring 0)
					  history))))
	  (ring-insert term-input-ring history))
        (run-hook-with-args 'term-input-filter-functions (concat input "\n"))
	(setq term-input-ring-index nil)

	;; Update the markers before we send the input
	;; in case we get output amidst sending the input.
	(set-marker term-last-input-start pmark)
	(set-marker term-last-input-end (point))
	(when input-is-new
	  ;; Set up to delete, because inferior should echo.
	  (when (marker-buffer term-pending-delete-marker)
	    (delete-region term-pending-delete-marker pmark))
	  (set-marker term-pending-delete-marker pmark-val)
	  (set-marker (process-mark proc) (point)))
	(goto-char pmark)
	(funcall term-input-sender proc input)))))

(defun term-get-old-input-default ()
  "Default for `term-get-old-input'.
Take the current line, and discard any initial text matching
`term-prompt-regexp'."
  (save-excursion
    (beginning-of-line)
    (term-skip-prompt)
    (let ((beg (point)))
      (end-of-line)
      (buffer-substring beg (point)))))

(defun term-copy-old-input ()
  "Insert after prompt old input at point as new input to be edited.
Calls `term-get-old-input' to get old input."
  (interactive)
  (let ((input (funcall term-get-old-input))
 	(process (get-buffer-process (current-buffer))))
    (if (not process)
	(error "Current buffer has no process")
      (goto-char (process-mark process))
      (insert input))))

(defun term-skip-prompt ()
  "Skip past the text matching regexp `term-prompt-regexp'.
If this takes us past the end of the current line, don't skip at all."
  (let ((eol (line-end-position)))
    (when (and (looking-at term-prompt-regexp)
	       (<= (match-end 0) eol))
      (goto-char (match-end 0)))))


(defun term-after-pmark-p ()
  "Is point after the process output marker?"
  ;; Since output could come into the buffer after we looked at the point
  ;; but before we looked at the process marker's value, we explicitly
  ;; serialize.  This is just because I don't know whether or not Emacs
  ;; services input during execution of lisp commands.
  (let ((proc-pos (marker-position
		   (process-mark (get-buffer-process (current-buffer))))))
    (<= proc-pos (point))))

(defun term-simple-send (proc string)
  "Default function for sending to PROC input STRING.
This just sends STRING plus a newline.  To override this,
set the hook `term-input-sender'."
  (term-send-string proc string)
  (term-send-string proc "\n"))

(defun term-bol (arg)
  "Go to the beginning of line, then skip past the prompt, if any.
If a prefix argument is given (\\[universal-argument]), then no prompt skip
-- go straight to column 0.

The prompt skip is done by skipping text matching the regular expression
`term-prompt-regexp', a buffer local variable."
  (interactive "P")
  (beginning-of-line)
  (when (null arg) (term-skip-prompt)))

;; These two functions are for entering text you don't want echoed or
;; saved -- typically passwords to ftp, telnet, or somesuch.
;; Just enter m-x term-send-invisible and type in your line.

(defun term-read-noecho (prompt &optional stars)
  "Read a single line of text from user without echoing, and return it.
Prompt with argument PROMPT, a string.  Optional argument STARS causes
input to be echoed with `*' characters on the prompt line.  Input ends with
RET, LFD, or ESC.  DEL or C-h rubs out.  C-u kills line.  C-g aborts (if
`inhibit-quit' is set because e.g. this function was called from a process
filter and C-g is pressed, this function returns nil rather than a string).

Note that the keystrokes comprising the text can still be recovered
\(temporarily) with \\[view-lossage].  This may be a security bug for some
applications."
  (declare (obsolete read-passwd "27.1"))
  (let ((ans "")
	(c 0)
	(echo-keystrokes 0)
	(cursor-in-echo-area t)
        (done nil))
    (while (not done)
      (if stars
          (message "%s%s" prompt (make-string (length ans) ?*))
        (message "%s" prompt))
      (setq c (read-char))
      (cond ((= c ?\C-g)
             ;; This function may get called from a process filter, where
             ;; inhibit-quit is set.  In later versions of Emacs read-char
             ;; may clear quit-flag itself and return C-g.  That would make
             ;; it impossible to quit this loop in a simple way, so
             ;; re-enable it here (for backward-compatibility the check for
             ;; quit-flag below would still be necessary, so this seems
             ;; like the simplest way to do things).
             (setq quit-flag t
                   done t))
            ((or (= c ?\r) (= c ?\n) (= c ?\e))
             (setq done t))
            ((= c ?\C-u)
             (setq ans ""))
            ((and (/= c ?\b) (/= c ?\177))
             (setq ans (concat ans (char-to-string c))))
            ((> (length ans) 0)
             (setq ans (substring ans 0 -1)))))
    (if quit-flag
        ;; Emulate a true quit, except that we have to return a value.
        (prog1
            (setq quit-flag nil)
          (message "Quit")
          (beep t))
      (message "")
      ans)))

(defun term-send-invisible (str &optional proc)
  "Read a string without echoing.
Then send it to the process running in the current buffer.  A new-line
is additionally sent.  String is not saved on term input history list."
  (interactive "P") ; Defeat snooping via C-x esc
  (when (not (stringp str))
    (setq str (read-passwd "Non-echoed text: ")))
  (when (not proc)
    (setq proc (get-buffer-process (current-buffer))))
  (if (not proc) (error "Current buffer has no process")
    (setq term-kill-echo-list (nconc term-kill-echo-list
				     (cons str nil)))
    (term-send-string proc str)
    (term-send-string proc "\n")))

;; TODO: Maybe combine this with `comint-watch-for-password-prompt'.
(defun term-watch-for-password-prompt (string)
  "Prompt in the minibuffer for password and send without echoing.
Checks if STRING contains a password prompt as defined by
`comint-password-prompt-regexp'."
  (when (term-in-line-mode)
    (when (let ((case-fold-search t))
            (string-match comint-password-prompt-regexp string))
      ;; Use `run-at-time' in order not to pause execution of the
      ;; process filter with a minibuffer
      (run-at-time
       0 nil
       (lambda (current-buf)
         (with-current-buffer current-buf
           (term-send-invisible (read-passwd string))))
       (current-buffer)))))

\f
;;; Low-level process communication

(defcustom term-input-chunk-size 512
  "Long inputs send to term processes are broken up into chunks of this size.
If your process is choking on big inputs, try lowering the value."
  :group 'term
  :type 'integer)

(defun term-send-string (proc str)
  "Send to PROC the contents of STR as input.
This is equivalent to `process-send-string', except that long input strings
are broken up into chunks of size `term-input-chunk-size'.  Processes
are given a chance to output between chunks.  This can help prevent processes
from hanging when you send them long inputs on some OS's."
  (let* ((len (length str))
	 (i (min len term-input-chunk-size)))
    (process-send-string proc (substring str 0 i))
    (while (< i len)
      (let ((next-i (+ i term-input-chunk-size)))
	(accept-process-output)
	(process-send-string proc (substring str i (min len next-i)))
	(setq i next-i)))))

(defun term-send-region (proc start end)
  "Send to PROC the region delimited by START and END.
This is a replacement for `process-send-region' that tries to keep
your process from hanging on long inputs.  See `term-send-string'."
  (term-send-string proc (buffer-substring start end)))

\f
;;; Random input hackage

(defun term-kill-output ()
  "Kill all output from interpreter since last input."
  (interactive)
  (let ((pmark (process-mark (get-buffer-process (current-buffer)))))
    (kill-region term-last-input-end pmark)
    (goto-char pmark)
    (insert "*** output flushed ***\n")
    (set-marker pmark (point))))

(defun term-show-output ()
  "Display start of this batch of interpreter output at top of window.
Sets mark to the value of point when this command is run."
  (interactive)
  (goto-char term-last-input-end)
  (backward-char)
  (beginning-of-line)
  (set-window-start (selected-window) (point))
  (end-of-line))

(defun term-interrupt-subjob ()
  "Interrupt the current subjob."
  (interactive)
  (interrupt-process nil term-ptyp))

(defun term-kill-subjob ()
  "Send kill signal to the current subjob."
  (interactive)
  (kill-process nil term-ptyp))

(defun term-quit-subjob ()
  "Send quit signal to the current subjob."
  (interactive)
  (quit-process nil term-ptyp))

(defun term-stop-subjob ()
  "Stop the current subjob.
WARNING: if there is no current subjob, you can end up suspending
the top-level process running in the buffer.  If you accidentally do
this, use \\[term-continue-subjob] to resume the process.  (This
is not a problem with most shells, since they ignore this signal.)"
  (interactive)
  (stop-process nil term-ptyp))

(defun term-continue-subjob ()
  "Send CONT signal to process buffer's process group.
Useful if you accidentally suspend the top-level process."
  (interactive)
  (continue-process nil term-ptyp))

(defun term-kill-input ()
  "Kill all text from last stuff output by interpreter to point."
  (interactive)
  (let* ((pmark (process-mark (get-buffer-process (current-buffer))))
	 (p-pos (marker-position pmark)))
    (when (> (point) p-pos)
      (kill-region pmark (point)))))

(defun term-delchar-or-maybe-eof (arg)
  "Delete ARG characters forward, or send an EOF to process if at end of buffer."
  (interactive "p")
  (if (eobp)
      (process-send-eof)
    (delete-char arg)))

(defun term-send-eof ()
  "Send an EOF to the current buffer's process."
  (interactive)
  (process-send-eof))

(defun term-backward-matching-input (regexp n)
  "Search backward through buffer for match for REGEXP.
Matches are searched for on lines that match `term-prompt-regexp'.
With prefix argument N, search for Nth previous match.
If N is negative, find the next or Nth next match."
  (interactive (term-regexp-arg "Backward input matching (regexp): "))
  (let* ((re (concat term-prompt-regexp ".*" regexp))
	 (pos (save-excursion (end-of-line (if (> n 0) 0 1))
			      (when (re-search-backward re nil t n)
				(point)))))
    (if (null pos)
	(progn (message "Not found")
	       (ding))
      (goto-char pos)
      (term-bol nil))))

(defun term-forward-matching-input (regexp n)
  "Search forward through buffer for match for REGEXP.
Matches are searched for on lines that match `term-prompt-regexp'.
With prefix argument N, search for Nth following match.
If N is negative, find the previous or Nth previous match."
  (interactive (term-regexp-arg "Forward input matching (regexp): "))
  (term-backward-matching-input regexp (- n)))


(defun term-next-prompt (n)
  "Move to end of Nth next prompt in the buffer.
See `term-prompt-regexp'."
  (interactive "p")
  (let ((paragraph-start term-prompt-regexp))
    (end-of-line (if (> n 0) 1 0))
    (forward-paragraph n)
    (term-skip-prompt)))

(defun term-previous-prompt (n)
  "Move to end of Nth previous prompt in the buffer.
See `term-prompt-regexp'."
  (interactive "p")
  (term-next-prompt (- n)))
\f
;;; Support for source-file processing commands.
;;============================================================================
;; Many command-interpreters (e.g., Lisp, Scheme, Soar) have
;; commands that process files of source text (e.g. loading or compiling
;; files).  So the corresponding process-in-a-buffer modes have commands
;; for doing this (e.g., lisp-load-file).  The functions below are useful
;; for defining these commands.
;;
;; Alas, these guys don't do exactly the right thing for Lisp, Scheme
;; and Soar, in that they don't know anything about file extensions.
;; So the compile/load interface gets the wrong default occasionally.
;; The load-file/compile-file default mechanism could be smarter -- it
;; doesn't know about the relationship between filename extensions and
;; whether the file is source or executable.  If you compile foo.lisp
;; with compile-file, then the next load-file should use foo.bin for
;; the default, not foo.lisp.  This is tricky to do right, particularly
;; because the extension for executable files varies so much (.o, .bin,
;; .lbin, .mo, .vo, .ao, ...).


;; TERM-SOURCE-DEFAULT -- determines defaults for source-file processing
;; commands.
;;
;; TERM-CHECK-SOURCE -- if FNAME is in a modified buffer, asks you if you
;; want to save the buffer before issuing any process requests to the command
;; interpreter.
;;
;; TERM-GET-SOURCE -- used by the source-file processing commands to prompt
;; for the file to process.

;; (TERM-SOURCE-DEFAULT previous-dir/file source-modes)
;;============================================================================
;; This function computes the defaults for the load-file and compile-file
;; commands for tea, soar, cmulisp, and cmuscheme modes.
;;
;; - PREVIOUS-DIR/FILE is a pair (directory . filename) from the last
;; source-file processing command, or nil if there hasn't been one yet.
;; - SOURCE-MODES is a list used to determine what buffers contain source
;; files: if the major mode of the buffer is in SOURCE-MODES, it's source.
;; Typically, (lisp-mode) or (scheme-mode).
;;
;; If the command is given while the cursor is inside a string, *and*
;; the string is an existing filename, *and* the filename is not a directory,
;; then the string is taken as default.  This allows you to just position
;; your cursor over a string that's a filename and have it taken as default.
;;
;; If the command is given in a file buffer whose major mode is in
;; SOURCE-MODES, then the filename is the default file, and the
;; file's directory is the default directory.
;;
;; If the buffer isn't a source file buffer (e.g., it's the process buffer),
;; then the default directory & file are what was used in the last source-file
;; processing command (i.e., PREVIOUS-DIR/FILE).  If this is the first time
;; the command has been run (PREVIOUS-DIR/FILE is nil), the default directory
;; is the cwd, with no default file.  (\"no default file\" = nil)
;;
;; SOURCE-REGEXP is typically going to be something like (tea-mode)
;; for T programs, (lisp-mode) for Lisp programs, (soar-mode lisp-mode)
;; for Soar programs, etc.
;;
;; The function returns a pair: (default-directory . default-file).

(defun term-source-default (previous-dir/file source-modes)
  (cond ((and buffer-file-name (memq major-mode source-modes))
	 (cons (file-name-directory    buffer-file-name)
	       (file-name-nondirectory buffer-file-name)))
	(previous-dir/file)
	(t
	 (cons default-directory nil))))


;; (TERM-CHECK-SOURCE fname)
;;============================================================================
;; Prior to loading or compiling (or otherwise processing) a file (in the CMU
;; process-in-a-buffer modes), this function can be called on the filename.
;; If the file is loaded into a buffer, and the buffer is modified, the user
;; is queried to see if he wants to save the buffer before proceeding with
;; the load or compile.

(defun term-check-source (fname)
  (let ((buff (get-file-buffer fname)))
    (when (and buff
	       (buffer-modified-p buff)
	       (y-or-n-p (format "Save buffer %s first? "
				 (buffer-name buff))))
      ;; save BUFF.
      (with-current-buffer buff
	(save-buffer)))))


;; (TERM-GET-SOURCE prompt prev-dir/file source-modes mustmatch-p)
;;============================================================================
;; TERM-GET-SOURCE is used to prompt for filenames in command-interpreter
;; commands that process source files (like loading or compiling a file).
;; It prompts for the filename, provides a default, if there is one,
;; and returns the result filename.
;;
;; See TERM-SOURCE-DEFAULT for more on determining defaults.
;;
;; PROMPT is the prompt string.  PREV-DIR/FILE is the (directory . file) pair
;; from the last source processing command.  SOURCE-MODES is a list of major
;; modes used to determine what file buffers contain source files.  (These
;; two arguments are used for determining defaults).  If MUSTMATCH-P is true,
;; then the filename reader will only accept a file that exists.
;;
;; A typical use:
;; (interactive (term-get-source "Compile file" prev-lisp-dir/file
;;                                 '(lisp-mode) t))

;; This is pretty stupid about strings.  It decides we're in a string
;; if there's a quote on both sides of point on the current line.
(defun term-extract-string ()
  "Return string around `point' that starts the current line or nil."
  (save-excursion
    (let* ((point (point))
	   (bol (line-beginning-position))
	   (eol (line-end-position))
	   (start (and (search-backward "\"" bol t)
                       (1+ (point))))
	   (end (progn (goto-char point)
		       (and (search-forward "\"" eol t)
			    (1- (point))))))
      (and start end
	   (buffer-substring start end)))))

(defun term-get-source (prompt prev-dir/file source-modes mustmatch-p)
  (let* ((def (term-source-default prev-dir/file source-modes))
         (stringfile (term-extract-string))
	 (sfile-p (and stringfile
		       (condition-case ()
			   (file-exists-p stringfile)
			 (error nil))
		       (not (file-directory-p stringfile))))
	 (defdir  (if sfile-p (file-name-directory stringfile)
                      (car def)))
	 (deffile (if sfile-p (file-name-nondirectory stringfile)
                      (cdr def)))
	 (ans (read-file-name (format-prompt prompt deffile)
			      defdir
			      (concat defdir deffile)
			      mustmatch-p)))
    (list (expand-file-name (substitute-in-file-name ans)))))

;; I am somewhat divided on this string-default feature.  It seems
;; to violate the principle-of-least-astonishment, in that it makes
;; the default harder to predict, so you actually have to look and see
;; what the default really is before choosing it.  This can trip you up.
;; On the other hand, it can be useful, I guess.  I would appreciate feedback
;; on this.
;;     -Olin

\f
;;; Simple process query facility.
;; ===========================================================================
;; This function is for commands that want to send a query to the process
;; and show the response to the user.  For example, a command to get the
;; arglist for a Common Lisp function might send a "(arglist 'foo)" query
;; to an inferior Common Lisp process.
;;
;; This simple facility just sends strings to the inferior process and pops
;; up a window for the process buffer so you can see what the process
;; responds with.  We don't do anything fancy like try to intercept what the
;; process responds with and put it in a pop-up window or on the message
;; line.  We just display the buffer.  Low tech.  Simple.  Works good.

;; Send to the inferior process PROC the string STR.  Pop-up but do not select
;; a window for the inferior process so that its response can be seen.
(defun term-proc-query (proc str)
  (let* ((proc-buf (process-buffer proc))
	 (proc-mark (process-mark proc)))
    (display-buffer proc-buf)
    (set-buffer proc-buf) ; but it's not the selected *window*
    (let ((proc-win (get-buffer-window proc-buf))
	  (proc-pt (marker-position proc-mark)))
      (term-send-string proc str) ; send the query
      (accept-process-output proc)  ; wait for some output
      ;; Try to position the proc window so you can see the answer.
      ;; This is bogus code.  If you delete the (sit-for 0), it breaks.
      ;; I don't know why.  Wizards invited to improve it.
      (when (not (pos-visible-in-window-p proc-pt proc-win))
	(let ((opoint (window-point proc-win)))
	  (set-window-point proc-win proc-mark) (sit-for 0)
	  (if (not (pos-visible-in-window-p opoint proc-win))
	      (push-mark opoint)
	    (set-window-point proc-win opoint)))))))
\f
;; Returns the current column in the current screen line.
;; Note: (current-column) yields column in buffer line.

(defun term-horizontal-column ()
  (- (term-current-column) (term-start-line-column)))

;; Calls either vertical-motion or term-buffer-vertical-motion
(defmacro term-vertical-motion (count)
  (list 'funcall 'term-vertical-motion count))

; An emulation of vertical-motion that is independent of having a window.
; Instead, it uses the term-width variable as the logical window width.

(defun term-buffer-vertical-motion (count)
  (cond ((= count 0)
	 (move-to-column (* term-width (/ (current-column) term-width)))
	 0)
	((> count 0)
	 (let ((H)
	       (todo (+ count (/ (current-column) term-width))))
	   (end-of-line)
	   ;; The loop iterates over buffer lines;
	   ;; H is the number of screen lines in the current line, i.e.
	   ;; the ceiling of dividing the buffer line width by term-width.
	   (while (and (<= (setq H (max (/ (+ (current-column) term-width -1)
					   term-width)
					1))
			   todo)
		       (not (eobp)))
	     (setq todo (- todo H))
	     (forward-char) ;; Move past the ?\n
	     (end-of-line)) ;; and on to the end of the next line.
	   (if (and (>= todo H) (> todo 0))
	       (+ (- count todo) H -1) ;; Hit end of buffer.
	     (move-to-column (* todo term-width))
	     count)))
	(t ;; (< count 0) ;; Similar algorithm, but for upward motion.
	 (let ((H)
	       (todo (- count)))
	   (while (and (<= (setq H (max (/ (+ (current-column) term-width -1)
					   term-width)
					1))
			   todo)
		       (progn (beginning-of-line)
			      (not (bobp))))
	     (setq todo (- todo H))
	     (backward-char)) ;; Move to end of previous line.
	   (if (and (>= todo H) (> todo 0))
	       (+ count todo (- 1 H)) ;; Hit beginning of buffer.
	     (move-to-column (* (- H todo 1) term-width))
	     count)))))

;; The term-start-line-column variable is used as a cache.
(defun term-start-line-column ()
  (cond (term-start-line-column)
	((let ((save-pos (point)))
	   (term-vertical-motion 0)
	   (setq term-start-line-column (current-column))
	   (goto-char save-pos)
	   term-start-line-column))))

;; Same as (current-column), but uses term-current-column as a cache.
(defun term-current-column ()
  (cond (term-current-column)
	((setq term-current-column (current-column)))))

(defun term-move-to-column (column)
  (setq term-current-column column)
  (let ((point-at-eol (line-end-position)))
    (move-to-column term-current-column t)
    ;; If move-to-column extends the current line it will use the face
    ;; from the last character on the line, set the face for the chars
    ;; to default.
    (when (> (point) point-at-eol)
      (put-text-property point-at-eol (point) 'font-lock-face 'default))))

;; Move DELTA column right (or left if delta < 0 limiting at column 0).
(defun term-move-columns (delta)
  (term-move-to-column
   (max 0 (+ (term-current-column) delta))))

;; Insert COUNT copies of CHAR in the default face.
(defun term-insert-char (char count)
  (let ((old-point (point)))
    (insert-char char count)
    (put-text-property old-point (point) 'font-lock-face 'default)))

(defun term-current-row ()
  (cond (term-current-row)
	((setq term-current-row
	       (save-restriction
		 (save-excursion
		   (narrow-to-region term-home-marker (point-max))
		   (- (term-vertical-motion -9999))))))))

(defun term-adjust-current-row-cache (delta)
  (when term-current-row
    (setq term-current-row
	  (max 0 (+ term-current-row delta)))))

(defun term-terminal-pos ()
  (save-excursion ;    save-restriction
    (let ((save-col (term-current-column))
	  x y)
      (term-vertical-motion 0)
      (setq x (- save-col (current-column)))
      (setq y (term-vertical-motion term-height))
      (cons x y))))

;;Function that handles term messages: code by rms (and you can see the
;;difference ;-) -mm

(defun term-handle-ansi-terminal-messages (message)
  ;; Is there a command here?
  (while (string-match "\eAnSiT.+\n" message)
    ;; Extract the command code and the argument.
    (let* ((start (match-beginning 0))
	   (command-code (aref message (+ start 6)))
	   (argument
	    (save-match-data
	      (substring message
			 (+ start 8)
			 (string-match "\r?\n" message
				       (+ start 8)))))
	   ignore)
      ;; Delete this command from MESSAGE.
      (setq message (replace-match "" t t message))

      ;; If we recognize the type of command, set the appropriate variable.
      (cond ((= command-code ?c)
	     (setq term-ansi-at-dir argument))
	    ((= command-code ?h)
	     (setq term-ansi-at-host argument))
	    ((= command-code ?u)
	     (setq term-ansi-at-user argument))
	    ;; Otherwise ignore this one.
	    (t
	     (setq ignore t)))

      ;; Update default-directory based on the changes this command made.
      (if ignore
	  nil
	(setq default-directory
	      (file-name-as-directory
	       (if (and (string= term-ansi-at-host (system-name))
                        (string= term-ansi-at-user (user-real-login-name)))
		   (expand-file-name term-ansi-at-dir)
                 (concat "/-:" term-ansi-at-user "@" term-ansi-at-host ":"
                         term-ansi-at-dir))))

	;; I'm not sure this is necessary,
	;; but it's best to be on the safe side.
	(if (string= term-ansi-at-host (system-name))
	    (progn
	      (setq ange-ftp-default-user term-ansi-at-save-user)
	      (setq ange-ftp-default-password term-ansi-at-save-pwd)
	      (setq ange-ftp-generate-anonymous-password term-ansi-at-save-anon))
	  (setq term-ansi-at-save-user ange-ftp-default-user)
	  (setq term-ansi-at-save-pwd ange-ftp-default-password)
	  (setq term-ansi-at-save-anon ange-ftp-generate-anonymous-password)
	  (setq ange-ftp-default-user nil)
	  (setq ange-ftp-default-password nil)
	  (setq ange-ftp-generate-anonymous-password nil)))))
  message)


;; Terminal emulation
;; This is the standard process filter for term buffers.
;; It emulates (most of the features of) a VT100/ANSI-style terminal.

;; References:
;; [ctlseqs]: http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
;; [ECMA-48]: https://www.ecma-international.org/publications/standards/Ecma-048.htm
;; [vt100]: https://vt100.net/docs/vt100-ug/chapter3.html

(defconst term-control-seq-regexp
  (concat
   ;; A control character,
   "\\(?:[\r\n\000\007\t\b\016\017]\\|"
   ;; some Emacs specific control sequences, implemented by
   ;; `term-command-hook',
   "\032[^\n]+\n\\|"
   ;; a C1 escape coded character (see [ECMA-48] section 5.3 "Elements
   ;; of the C1 set"),
   "\e\\(?:[DM78c]\\|"
   ;; another Emacs specific control sequence,
   "AnSiT[^\n]+\n\\|"
   ;; or an escape sequence (section 5.4 "Control Sequences"),
   "\\[\\([\x30-\x3F]*\\)[\x20-\x2F]*[\x40-\x7E]\\)\\)")
  "Regexp matching control sequences handled by term.el.")

(defconst term-control-seq-prefix-regexp
  "[\032\e]")

(defun term-emulate-terminal (proc str)
  (when (buffer-live-p (process-buffer proc))
    (with-current-buffer (process-buffer proc)
      (let* ((i 0) funny
	     decoded-substring
	     save-point save-marker win
	     (inhibit-read-only t)
	     (buffer-undo-list t)
	     (selected (selected-window))
	     last-win
	     (str-length (length str)))
        (save-selected-window

	  (when (marker-buffer term-pending-delete-marker)
	    ;; Delete text following term-pending-delete-marker.
	    (delete-region term-pending-delete-marker (process-mark proc))
	    (set-marker term-pending-delete-marker nil))

	  (when (/= (point) (process-mark proc))
	    (setq save-point (point-marker)))

          (setf term-vertical-motion
                (if (eq (window-buffer) (current-buffer))
                    'vertical-motion
                  'term-buffer-vertical-motion))
          (setq save-marker (copy-marker (process-mark proc)))
	  (goto-char (process-mark proc))

	  (save-restriction
	    ;; If the buffer is in line mode, and there is a partial
	    ;; input line, save the line (by narrowing to leave it
	    ;; outside the restriction ) until we're done with output.
	    (when (and (> (point-max) (process-mark proc))
		       (term-in-line-mode))
	      (narrow-to-region (point-min) (process-mark proc)))

	    (when term-log-buffer
	      (princ str term-log-buffer))
            (when term-terminal-undecoded-bytes
              (setq str (concat term-terminal-undecoded-bytes str))
              (setq str-length (length str))
              (setq term-terminal-undecoded-bytes nil))

            (while (< i str-length)
              (setq funny (string-match term-control-seq-regexp str i))
              (let ((ctl-params (and funny (match-string 1 str)))
                    (ctl-params-end (and funny (match-end 1)))
                    (ctl-end (if funny (match-end 0)
                               (setq funny (string-match term-control-seq-prefix-regexp str i))
                               (if funny
                                   (setq term-terminal-undecoded-bytes
                                         (substring str funny))
                                 (setq funny str-length))
                               ;; The control sequence ends somewhere
                               ;; past the end of this string.
                               (1+ str-length))))
                (when (> funny i)
                  (when term-do-line-wrapping
                    (term-down 1 t)
                    (term-move-to-column 0)
                    (setq term-do-line-wrapping nil))
                  ;; Handle non-control data.  Decode the string before
                  ;; counting characters, to avoid garbling of certain
                  ;; multibyte characters (bug#1006).
                  (setq decoded-substring
                        (decode-coding-string
                         (substring str i funny)
                         locale-coding-system t))
                  ;; Check for multibyte characters that ends
                  ;; before end of string, and save it for
                  ;; next time.
                  (when (= funny str-length)
                    (let ((partial 0)
                          (count (length decoded-substring)))
                      (while (and (< partial count)
                                  (eq (char-charset (aref decoded-substring
                                                          (- count 1 partial)))
                                      'eight-bit))
                        (cl-incf partial))
                      (when (> count partial 0)
                        (setq term-terminal-undecoded-bytes
                              (substring decoded-substring (- partial)))
                        (setq decoded-substring
                              (substring decoded-substring 0 (- partial)))
                        (cl-decf str-length partial)
                        (cl-decf funny partial))))

                  ;; Insert a string, check how many columns
                  ;; we moved, then delete that many columns
                  ;; following point if not eob nor insert-mode.
                  (let ((old-column (term-horizontal-column))
                        (old-point (point))
                        columns)
                    (unless term-suppress-hard-newline
                      (while (> (+ (length decoded-substring) old-column)
                                term-width)
                        (insert (substring decoded-substring 0
                                           (- term-width old-column)))
                        ;; Since we've enough text to fill the whole line,
                        ;; delete previous text regardless of
                        ;; `term-insert-mode's value.
                        (delete-region (point) (line-end-position))
                        (term-down 1 t)
                        (term-move-columns (- (term-current-column)))
                        (add-text-properties (1- (point)) (point)
                                             '(term-line-wrap t rear-nonsticky t))
                        (setq decoded-substring
                              (substring decoded-substring (- term-width old-column)))
                        (setq old-column 0)))
                    (insert decoded-substring)
                    (setq term-current-column (current-column)
                          columns (- term-current-column old-column))
                    (when (not (or (eobp) term-insert-mode))
                      (let ((pos (point)))
                        (term-move-columns columns)
                        (delete-region pos (point))
                        (setq term-current-column nil)))
                    ;; In insert mode if the current line
                    ;; has become too long it needs to be
                    ;; chopped off.
                    (when term-insert-mode
                      (let ((pos (point)))
                        (end-of-line)
                        (when (> (current-column) term-width)
                          (delete-region (- (point) (- (current-column) term-width))
                                         (point)))
                        (goto-char pos)))

                    (put-text-property old-point (point)
                                       'font-lock-face term-current-face))
                  ;; If the last char was written in last column,
                  ;; back up one column, but remember we did so.
                  ;; Thus we emulate xterm/vt100-style line-wrapping.
                  (when (eq (term-current-column) term-width)
                    (term-move-columns -1)
                    ;; We check after ctrl sequence handling if point
                    ;; was moved (and leave line-wrapping state if so).
                    (setq term-do-line-wrapping (point)))
                  (setq term-current-column nil)
                  (setq i funny))
                (pcase-exhaustive (and (<= ctl-end str-length) (aref str i))
                  (?\t ;; TAB (terminfo: ht)
                   ;; The line cannot exceed term-width. TAB at
                   ;; the end of a line should not cause wrapping.
                   (let ((col (term-current-column)))
                     (term-move-to-column
                      (min (1- term-width)
                           (+ col 8 (- (mod col 8)))))))
                  (?\r ;; (terminfo: cr)
                   (term-vertical-motion 0)
                   (setq term-current-column term-start-line-column))
                  (?\n ;; (terminfo: cud1, ind)
                   (unless (and term-kill-echo-list
                                (term-check-kill-echo-list))
                     (term-down 1 t)))
                  (?\b ;; (terminfo: cub1)
                   (term-move-columns -1))
                  (?\C-g ;; (terminfo: bel)
                   (beep t))
                  (?\032            ; Emacs specific control sequence.
                   (funcall term-command-function
                            (decode-coding-string
                             (substring str (1+ i)
                                        (- ctl-end
                                           (if (eq (aref str (- ctl-end 2)) ?\r)
                                               2 1)))
                             locale-coding-system t)))
                  (?\e
                   (pcase (aref str (1+ i))
                     (?\[
                      ;; We only handle control sequences with a single
                      ;; "Final" byte (see [ECMA-48] section 5.4).
                      (when (eq ctl-params-end (1- ctl-end))
                        (term-handle-ansi-escape
                         proc
                         (mapcar ;; We don't distinguish empty params
                          ;; from 0 (according to [ECMA-48] we
                          ;; should, but all commands we support
                          ;; default to 0 values anyway).
                          #'string-to-number
                          (split-string ctl-params ";"))
                         (aref str (1- ctl-end)))))
                     (?D ;; Scroll forward (apparently not documented in
                      ;; [ECMA-48], [ctlseqs] mentions it as C1
                      ;; character "Index" though).
                      (term-handle-deferred-scroll)
                      (term-down 1 t))
                     (?M ;; Scroll reversed (terminfo: ri, ECMA-48
                      ;; "Reverse Linefeed").
                      (if (or (< (term-current-row) term-scroll-start)
                              (>= (1- (term-current-row))
                                  term-scroll-start))
                          ;; Scrolling up will not move outside
                          ;; the scroll region.
                          (term-down -1)
                        ;; Scrolling the scroll region is needed.
                        (term-down -1 t)))
                     (?7 ;; Save cursor (terminfo: sc, not in [ECMA-48],
                      ;; [ctlseqs] has it as "DECSC").
                      (term-handle-deferred-scroll)
                      (setq term-saved-cursor
                            (list (term-current-row)
                                  (term-horizontal-column)
                                  term-ansi-current-bg-color
                                  term-ansi-current-bold
                                  term-ansi-current-faint
                                  term-ansi-current-italic
                                  term-ansi-current-underline
                                  term-ansi-current-slow-blink
                                  term-ansi-current-fast-blink
                                  term-ansi-current-color
                                  term-ansi-current-invisible
                                  term-ansi-current-reverse
                                  term-current-face)))
                     (?8 ;; Restore cursor (terminfo: rc, [ctlseqs]
                      ;; "DECRC").
                      (when term-saved-cursor
                        (term-goto (nth 0 term-saved-cursor)
                                   (nth 1 term-saved-cursor))
                        (pcase-setq
                         `( ,_ ,_
                            ,term-ansi-current-bg-color
                            ,term-ansi-current-bold
                            ,term-ansi-current-faint
                            ,term-ansi-current-italic
                            ,term-ansi-current-underline
                            ,term-ansi-current-slow-blink
                            ,term-ansi-current-fast-blink
                            ,term-ansi-current-color
                            ,term-ansi-current-invisible
                            ,term-ansi-current-reverse
                            ,term-current-face)
                         term-saved-cursor)))
                     (?c ;; \Ec - Reset (terminfo: rs1, [ctlseqs] "RIS").
                      ;; This is used by the "clear" program.
                      (term-reset-terminal))
                     (?A ;; An \eAnSiT sequence (Emacs specific).
                      (term-handle-ansi-terminal-messages
                       (substring str i ctl-end)))))
                  ;; Ignore NUL, Shift Out, Shift In.
                  ((or ?\0 #xE #xF 'nil) nil))
                ;; Leave line-wrapping state if point was moved.
                (unless (eq term-do-line-wrapping (point))
                  (setq term-do-line-wrapping nil))
                (if (term-handling-pager)
                    (progn
                      ;; Finish stuff to get ready to handle PAGER.
                      (if (> (% (current-column) term-width) 0)
                          (setq term-terminal-undecoded-bytes
                                (substring str i))
                        ;; We're at column 0.  Goto end of buffer; to compensate,
                        ;; prepend a ?\r for later.  This looks more consistent.
                        (if (zerop i)
                            (setq term-terminal-undecoded-bytes
                                  (concat "\r" (substring str i)))
                          (setq term-terminal-undecoded-bytes (substring str (1- i)))
                          (aset term-terminal-undecoded-bytes 0 ?\r))
                        (goto-char (point-max)))
                      ;; FIXME: Use (add-function :override (process-filter proc)
                      (setq-local term-pager-old-filter (process-filter proc))
                      ;; FIXME: Where is `term-pager-filter' set to a function?!
                      (set-process-filter proc term-pager-filter)
                      (setq i str-length))
                  (setq i ctl-end)))))

	  (when (>= (term-current-row) term-height)
	    (term-handle-deferred-scroll))

	  (set-marker (process-mark proc) (point))
          (when (stringp decoded-substring)
            (term-watch-for-password-prompt decoded-substring))
	  (when save-point
	    (goto-char save-point)
	    (set-marker save-point nil))

	  ;; Check for a pending filename-and-line number to display.
	  ;; We do this before scrolling, because we might create a new window.
	  (when (and term-pending-frame
		     (eq (window-buffer selected) (current-buffer)))
	    (term-display-line (car term-pending-frame)
			       (cdr term-pending-frame))
            (setq term-pending-frame nil))

	  ;; Scroll each window displaying the buffer but (by default)
	  ;; only if the point matches the process-mark we started with.
	  (setq win selected)
	  ;; Avoid infinite loop in strange case where minibuffer window
	  ;; is selected but not active.
	  (while (window-minibuffer-p win)
	    (setq win (next-window win nil t)))
	  (setq last-win win)
	  (while (progn
		   (setq win (next-window win nil t))
		   (when (eq (window-buffer win) (process-buffer proc))
		     (let ((scroll term-scroll-to-bottom-on-output))
		       (select-window win t)
		       (when (or (= (point) save-marker)
			         (eq scroll t) (eq scroll 'all)
			         ;; Maybe user wants point to jump to the end.
			         (and (eq selected win)
				      (or (eq scroll 'this) (not save-point)))
			         (and (eq scroll 'others)
				      (not (eq selected win))))
		         (when term-scroll-snap-to-bottom
		           (goto-char term-home-marker)
		           (recenter 0))
		         (goto-char (process-mark proc))
		         (if (not (pos-visible-in-window-p (point) win))
			     (recenter -1)))
		       ;; Optionally scroll so that the text
		       ;; ends at the bottom of the window.
		       (when (and term-scroll-show-maximum-output
				  (>= (point) (process-mark proc))
				  (or term-scroll-snap-to-bottom
				      (not (pos-visible-in-window-p
                                            (point-max) win))))
		         (save-excursion
			   (goto-char (point-max))
			   (recenter -1)))))
		   (not (eq win last-win))))

          ;; Stolen from comint.el and adapted -mm
	  (when (> term-buffer-maximum-size 0)
	    (save-excursion
	      (goto-char (process-mark (get-buffer-process (current-buffer))))
	      (forward-line (- term-buffer-maximum-size))
	      (beginning-of-line)
	      (delete-region (point-min) (point))))
	  (set-marker save-marker nil)))
      ;; This might be expensive, but we need it to handle something
      ;; like `sleep 5 | less -c' in more-or-less real time.
      (when (get-buffer-window (current-buffer))
        (redisplay)))))

(defvar-local term-goto-process-mark t
  "Whether to reset point to the current process mark after this command.

Set in `pre-command-hook' in char mode by `term-set-goto-process-mark'.")

(defun term-set-goto-process-mark ()
  "Set `term-goto-process-mark'.

Always set to nil if `term-char-mode-point-at-process-mark' is nil.

Called as a buffer-local `pre-command-hook' function in
`term-char-mode' so that when point is equal to the process mark
at the pre-command stage, we know to restore point to the process
mark at the post-command stage.

See also `term-goto-process-mark-maybe'."
  (setq term-goto-process-mark
        (and term-char-mode-point-at-process-mark
             (eq (point) (marker-position (term-process-mark))))))

(defun term-goto-process-mark-maybe ()
  "Move point to the term buffer's process mark upon keyboard input.

Called as a buffer-local `post-command-hook' function in
`term-char-mode' to prevent commands from putting the buffer into
an inconsistent state by unexpectedly moving point.

Mouse and wheel events are ignored so that mouse selection and
mouse wheel scrolling are unimpeded.

Only acts when the pre-command position of point was equal to the
process mark, and the `term-char-mode-point-at-process-mark'
option is enabled.  See `term-set-goto-process-mark'."
  (when term-goto-process-mark
    (unless (or (mouse-event-p last-command-event)
                (memq (event-basic-type last-command-event)
                      '(wheel-down wheel-up)))
      (goto-char (term-process-mark)))))

(defun term-process-mark ()
  "The current `process-mark' for the term buffer process."
  (process-mark (get-buffer-process (current-buffer))))

(defun term-handle-deferred-scroll ()
  (let ((count (- (term-current-row) term-height)))
    (when (>= count 0)
      (save-excursion
	(goto-char term-home-marker)
	(term-vertical-motion (1+ count))
	(set-marker term-home-marker (point))
	(setq term-current-row (term--last-line))))))

(defun term-reset-terminal ()
  "Reset the terminal, delete all the content and set the face to the default one."
  (erase-buffer)
  (term-ansi-reset)
  (setq term-current-row 0)
  (setq term-current-column 1)
  (term--reset-scroll-region)
  (setq term-insert-mode nil))

(defun term--color-as-hex (for-foreground)
  "Return the current ANSI color as a hexadecimal color string.
Use the current background color if FOR-FOREGROUND is nil,
otherwise use the current foreground color."
  (let ((color (if for-foreground term-ansi-current-color
                 term-ansi-current-bg-color)))
    (or (ansi-color--code-as-hex (1- color))
        (progn
          (and ansi-color-bold-is-bright term-ansi-current-bold
               (<= 1 color 8)
               (setq color (+ color 8)))
          (if for-foreground
              (face-foreground (elt ansi-term-color-vector color)
                               nil 'default)
            (face-background (elt ansi-term-color-vector color)
                             nil 'default))))))

;; New function to deal with ansi colorized output, as you can see you can
;; have any bold/underline/fg/bg/reverse combination. -mm

(defun term-handle-colors-array (parameter)
  (declare (obsolete term--handle-colors-list "29.1"))
  (term--handle-colors-list (list parameter)))

(defun term--handle-colors-list (parameters)
  (while parameters
    (pcase (pop parameters)
      (1 (setq term-ansi-current-bold t))       ; (terminfo: bold)
      (2 (setq term-ansi-current-faint t))      ; (terminfo: dim)
      (3 (setq term-ansi-current-italic t))     ; (terminfo: sitm)
      (4 (setq term-ansi-current-underline t))  ; (terminfo: smul)
      (5 (setq term-ansi-current-slow-blink t)) ; (terminfo: blink)
      (6 (setq term-ansi-current-fast-blink t))
      (7 (setq term-ansi-current-reverse t))    ; (terminfo: smso, rev)
      (8 (setq term-ansi-current-invisible t))  ; (terminfo: invis)
      (21 (setq term-ansi-current-bold nil))
      (22 (setq term-ansi-current-bold nil)
          (setq term-ansi-current-faint nil))
      (23 (setq term-ansi-current-italic nil))    ; (terminfo: ritm)
      (24 (setq term-ansi-current-underline nil)) ; (terminfo: rmul)
      (25 (setq term-ansi-current-slow-blink nil)
          (setq term-ansi-current-fast-blink nil))
      (27 (setq term-ansi-current-reverse nil)) ; (terminfo: rmso)

      ;; Foreground (terminfo: setaf)
      ((and param (guard (<= 30 param 37)))
       (setq term-ansi-current-color (- param 29)))

      ;; Bright foreground (terminfo: setaf)
      ((and param (guard (<= 90 param 97)))
       (setq term-ansi-current-color (- param 81)))

      ;; Extended foreground (terminfo: setaf)
      (38
       (pcase (pop parameters)
         ;; 256 color
         (5 (if (setq term-ansi-current-color (pop parameters))
                (cl-incf term-ansi-current-color)
              (term-ansi-reset)))
         ;; Full 24-bit color
         (2 (cl-loop with color = (1+ 256) ; Base
                     for i from 16 downto 0 by 8
                     if (pop parameters)
                     do (setq color (+ color (ash it i)))
                     else return (term-ansi-reset)
                     finally
                     (if (> color (+ 1 256 #xFFFFFF))
                         (term-ansi-reset)
                       (setq term-ansi-current-color color))))
         (_ (term-ansi-reset))))

      ;; Reset foreground (terminfo: op)
      (39 (setq term-ansi-current-color 0))

      ;; Background (terminfo: setab)
      ((and param (guard (<= 40 param 47)))
       (setq term-ansi-current-bg-color (- param 39)))

      ;; Bright background (terminfo: setab)
      ((and param (guard (<= 100 param 107)))
       (setq term-ansi-current-bg-color (- param 91)))

      ;; Extended background (terminfo: setab)
      (48
       (pcase (pop parameters)
         ;; 256 color
         (5 (if (setq term-ansi-current-bg-color (pop parameters))
                (cl-incf term-ansi-current-bg-color)
              (term-ansi-reset)))
         ;; Full 24-bit color
         (2 (cl-loop with color = (1+ 256) ; Base
                     for i from 16 downto 0 by 8
                     if (pop parameters)
                     do (setq color (+ color (ash it i)))
                     else return (term-ansi-reset)
                     finally
                     (if (> color (+ 1 256 #xFFFFFF))
                         (term-ansi-reset)
                       (setq term-ansi-current-bg-color color))))
         (_ (term-ansi-reset))))

      ;; Reset background (terminfo: op)
      (49 (setq term-ansi-current-bg-color 0))

      ;; 0 (Reset) (terminfo: sgr0) or unknown (reset anyway)
      (_ (term-ansi-reset))))

  (let (fg bg)
    (if term-ansi-current-invisible
        (setq bg (term--color-as-hex term-ansi-current-reverse)
              fg bg)
      (setq fg (term--color-as-hex t)
            bg (term--color-as-hex nil)))
    (setq term-current-face
          `( :foreground ,fg
             :background ,bg
             ,@(unless term-ansi-current-invisible
                 (list :inverse-video term-ansi-current-reverse)))))

  (setq term-current-face
        `(,term-current-face
          ,@(when term-ansi-current-bold
              '(term-bold))
          ,@(when term-ansi-current-faint
              '(term-faint))
          ,@(when term-ansi-current-italic
              '(term-italic))
          ,@(when term-ansi-current-underline
              '(term-underline))
          ,@(when term-ansi-current-slow-blink
              '(term-slow-blink))
          ,@(when term-ansi-current-fast-blink
              '(term-fast-blink)))))


;; Handle a character assuming (eq terminal-state 2) -
;; i.e. we have previously seen Escape followed by ?[.

(defun term-handle-ansi-escape (proc params char)
  (cond
   ((or (eq char ?H)  ;; cursor motion (terminfo: cup,home)
	;; (eq char ?f) ;; xterm seems to handle this sequence too, not
	;; needed for now
	)
    (term-goto
     (1- (max 1 (min (or (nth 0 params) 0) term-height)))
     (1- (max 1 (min (or (nth 1 params) 0) term-width)))))
   ;; \E[A - cursor up (terminfo: cuu, cuu1)
   ((eq char ?A)
    (term-handle-deferred-scroll)
    (let ((tcr (term-current-row))
          (scroll-amount (car params)))
      (term-down
       (if (< (- tcr scroll-amount) term-scroll-start)
	   ;; If the amount to move is before scroll start, move
	   ;; to scroll start.
	   (- term-scroll-start tcr)
         (if (>= scroll-amount tcr)
	     (- tcr)
           (- (max 1 scroll-amount))))
       t)))
   ;; \E[B - cursor down (terminfo: cud)
   ((eq char ?B)
    (let ((tcr (term-current-row))
          (scroll-amount (car params)))
      (unless (>= tcr term-scroll-end)
	(term-down
         (min (- term-scroll-end tcr) (max 1 scroll-amount))
         t))))
   ;; \E[C - cursor right (terminfo: cuf, cuf1)
   ((eq char ?C)
    (term-move-columns
     (max 1
          (if (>= (+ (car params) (term-current-column)) term-width)
	      (- term-width (term-current-column)  1)
            (car params)))))
   ;; \E[D - cursor left (terminfo: cub)
   ((eq char ?D)
    (term-move-columns (- (max 1 (car params)))))
   ;; \E[G - cursor motion to absolute column (terminfo: hpa)
   ((eq char ?G)
    (term-move-columns (- (max 0 (min term-width (car params)))
                          (term-current-column))))
   ;; \E[J - clear to end of screen (terminfo: ed, clear)
   ((eq char ?J)
    (term-erase-in-display (car params)))
   ;; \E[K - clear to end of line (terminfo: el, el1)
   ((eq char ?K)
    (term-erase-in-line (car params)))
   ;; \E[L - insert lines (terminfo: il, il1)
   ((eq char ?L)
    (term-insert-lines (max 1 (car params))))
   ;; \E[M - delete lines (terminfo: dl, dl1)
   ((eq char ?M)
    (term-delete-lines (max 1 (car params))))
   ;; \E[P - delete chars (terminfo: dch, dch1)
   ((eq char ?P)
    (term-delete-chars (max 1 (car params))))
   ;; \E[@ - insert spaces (terminfo: ich)
   ((eq char ?@)
    (term-insert-spaces (max 1 (car params))))
   ;; \E[?h - DEC Private Mode Set
   ((eq char ?h)
    (cond ((eq (car params) 4)  ;; (terminfo: smir)
	   (setq term-insert-mode t))
	  ((eq (car params) 47) ;; (terminfo: smcup)
	   (term-switch-to-alternate-sub-buffer t))))
   ;; \E[?l - DEC Private Mode Reset
   ((eq char ?l)
    (cond ((eq (car params) 4)  ;; (terminfo: rmir)
	   (setq term-insert-mode nil))
          ((eq (car params) 47) ;; (terminfo: rmcup)
	   (term-switch-to-alternate-sub-buffer nil))))

   ;; Modified to allow ansi coloring -mm
   ;; \E[m - Set/reset modes, set bg/fg
   ;;(terminfo: smso,rmso,smul,rmul,rev,bold,dim,sitm,ritm,blink,sgr0,invis,op,setab,setaf)
   ((eq char ?m)
    (term--handle-colors-list params))

   ;; \E[6n - Report cursor position (terminfo: u7)
   ((eq char ?n)
    (term-handle-deferred-scroll)
    (process-send-string proc
			 ;; (terminfo: u6)
			 (format "\e[%s;%sR"
				 (1+ (term-current-row))
				 (1+ (term-horizontal-column)))))
   ;; \E[r - Set scrolling region (terminfo: csr)
   ((eq char ?r)
    (term-set-scroll-region
     (1- (or (nth 0 params) 0))
     (1- (or (nth 1 params) 0))))
   (t)))

(defun term--reset-scroll-region ()
  "Set the scroll region to the full height of the terminal."
  (term-set-scroll-region 0 (term--last-line)))

(defun term-set-scroll-region (top bottom)
  "Set scrolling region.
TOP is the top-most line (inclusive) of the new scrolling region,
while BOTTOM is the line following the new scrolling region (e.g. exclusive).
The top-most line is line 0."
  (setq term-scroll-start
	(if (or (< top 0) (>= top term-height))
	    0
	  top))
  (setq term-scroll-end
	(if (or (<= bottom term-scroll-start) (> bottom (term--last-line)))
	    (term--last-line)
	  bottom))
  (setq term-scroll-with-delete
	(or (term-using-alternate-sub-buffer)
	    (not (and (= term-scroll-start 0)
                      (= term-scroll-end (term--last-line))))))
  (term-move-columns (- (term-current-column)))
  (term-goto 0 0))

(defun term-switch-to-alternate-sub-buffer (set)
  ;; If asked to switch to (from) the alternate sub-buffer, and already (not)
  ;; using it, do nothing.  This test is needed for some programs (including
  ;; Emacs) that emit the ti termcap string twice, for unknown reason.
  (term-handle-deferred-scroll)
  (when (eq set (not (term-using-alternate-sub-buffer)))
    (cond
     (set
      (goto-char (point-max))
      (if (not (eq (preceding-char) ?\n))
          (term-insert-char ?\n 1))
      (setq term-scroll-with-delete t)
      (setq term-saved-home-marker (copy-marker term-home-marker))
      (set-marker term-home-marker (point)))
     (t
      (setq term-scroll-with-delete
            (not (and (= term-scroll-start 0)
                      (= term-scroll-end (term--last-line)))))
      (goto-char (point-max))
      (when term-clear-full-screen-programs
        (delete-region term-home-marker (point))
        (set-marker term-home-marker term-saved-home-marker))
      (set-marker term-saved-home-marker nil)
      (setq term-saved-home-marker nil)))

    (setq term-start-line-column nil)
    (setq term-current-column nil)
    (setq term-current-row nil)
    (term-handle-deferred-scroll)))

;; Default value for the symbol term-command-function.

(defun term-command-hook (string)
  (cond ((equal string "")
	 t)
	((= (aref string 0) ?\032)
	 ;; gdb (when invoked with -fullname) prints:
	 ;; \032\032FULLFILENAME:LINENUMBER:CHARPOS:BEG_OR_MIDDLE:PC\n
	 (let* ((first-colon (string-search ":" string 1))
		(second-colon
		 (string-search ":" string (1+ first-colon)))
		(filename (substring string 1 first-colon))
		(fileline (string-to-number
			   (substring string (1+ first-colon) second-colon))))
	   (setq term-pending-frame (cons filename fileline))))
	((= (aref string 0) ?/)
	 (cd (substring string 1)))
	;; Allowing the inferior to call functions in Emacs is
	;; probably too big a security hole.
	;; ((= (aref string 0) ?!)
	;; (eval (car (read-from-string string 1))))
	(t)));; Otherwise ignore it

;; Make sure the file named TRUE-FILE is in a buffer that appears on the screen
;; and that its line LINE is visible.
;; Put the overlay-arrow on the line LINE in that buffer.
;; This is mainly used by gdb.

(defun term-display-line (true-file line)
  (term-display-buffer-line (find-file-noselect true-file) line))

(defun term-display-buffer-line (buffer line)
  (let* ((window (display-buffer buffer t))
	 (pos))
    (with-current-buffer buffer
      (save-restriction
	(widen)
	(goto-char (point-min))
	(forward-line (1- line))
	(setq pos (point))
	(setq overlay-arrow-string "=>")
	(or overlay-arrow-position
	    (setq overlay-arrow-position (make-marker)))
	(set-marker overlay-arrow-position (point) (current-buffer)))
      (cond ((or (< pos (point-min)) (> pos (point-max)))
	     (widen)
	     (goto-char pos))))
    (set-window-point window overlay-arrow-position)))

;; The buffer-local marker term-home-marker defines the "home position"
;; (in terms of cursor motion).  However, we move the term-home-marker
;; "down" as needed so that is no more that a window-full above (point-max).

(defun term-goto-home ()
  (term-handle-deferred-scroll)
  (goto-char term-home-marker)
  (setq term-current-row 0)
  (setq term-current-column (current-column))
  (setq term-start-line-column term-current-column))

(defun term-goto (row col)
  (term-handle-deferred-scroll)
  (cond ((and term-current-row (>= row term-current-row))
	 ;; I assume this is a worthwhile optimization.
	 (term-vertical-motion 0)
	 (setq term-current-column term-start-line-column)
	 (setq row (- row term-current-row)))
	(t
	 (term-goto-home)))
  (term-down row)
  (term-move-columns col))

;; The page is full, so enter "pager" mode, and wait for input.

(defun term-process-pager ()
  ;; (let ((process (get-buffer-process (current-buffer))))
  ;;   (stop-process process))
  (setq term-pager-old-local-map (current-local-map))
  (use-local-map term-pager-break-map)
  (setq-local term-old-mode-line-format mode-line-format)
  (setq mode-line-format
	(list "--  **MORE**  "
	      mode-line-buffer-identification
	      " [Type ? for help] "
	      "%-"))
  (force-mode-line-update))

(defun term-pager-line (lines)
  (interactive "p")
  (let* ((moved (vertical-motion (1+ lines)))
	 (deficit (- lines moved)))
    (when (> moved lines)
      (backward-char))
    (cond ((<= deficit 0) ;; OK, had enough in the buffer for request.
	   (recenter (term--last-line)))
	  ((term-pager-continue deficit)))))

(defun term-pager-page (arg)
  "Proceed past the **MORE** break, allowing the next page of output to appear."
  (interactive "p")
  (term-pager-line (* arg term-height)))

;; Pager mode command to go to beginning of buffer.
(defun term-pager-bob ()
  (interactive)
  (goto-char (point-min))
  (when (= (vertical-motion term-height) term-height)
    (backward-char))
  (recenter (term--last-line)))

;; Pager mode command to go to end of buffer.
(defun term-pager-eob ()
  (interactive)
  (goto-char term-home-marker)
  (recenter 0)
  (goto-char (process-mark (get-buffer-process (current-buffer)))))

(defun term-pager-back-line (lines)
  (interactive "p")
  (vertical-motion (- 1 lines))
  (if (not (bobp))
      (backward-char)
    (beep)
    ;; Move cursor to end of window.
    (vertical-motion term-height)
    (backward-char))
  (recenter (term--last-line)))

(defun term-pager-back-page (arg)
  (interactive "p")
  (term-pager-back-line (* arg term-height)))

(defun term-pager-discard ()
  (interactive)
  (setq term-terminal-undecoded-bytes "")
  (interrupt-process nil t)
  (term-pager-continue term-height))

;; Disable pager processing.
;; Only callable while in pager mode.  (Contrast term-disable-pager.)
(defun term-pager-disable ()
  (interactive)
  (if (term-handling-pager)
      (term-pager-continue nil)
    (setq term-pager-count nil))
  (term-update-mode-line))

;; Enable pager processing.
(defun term-pager-enable ()
  (interactive)
  (or (term-pager-enabled)
      (setq term-pager-count 0)) ;; Or maybe set to (term-current-row) ??
  (term-update-mode-line))

(defun term-pager-toggle ()
  (interactive)
  (if (term-pager-enabled) (term-pager-disable) (term-pager-enable)))

(defun term-pager-help ()
  "Provide help on commands available in a terminal-emulator **MORE** break."
  (interactive)
  (message "Terminal-emulator pager break help...")
  (sit-for 0)
  (with-electric-help
    (lambda ()
      (princ (substitute-command-keys
"\\<term-pager-break-map>\
Terminal-emulator MORE break.\n\
Type one of the following keys:\n\n\
\\[term-pager-page]\t\tMove forward one page.\n\
\\[term-pager-line]\t\tMove forward one line.\n\
\\[universal-argument] N \\[term-pager-page]\tMove N pages forward.\n\
\\[universal-argument] N \\[term-pager-line]\tMove N lines forward.\n\
\\[universal-argument] N \\[term-pager-back-line]\tMove N lines back.\n\
\\[universal-argument] N \\[term-pager-back-page]\t\tMove N pages back.\n\
\\[term-pager-bob]\t\tMove to the beginning of the buffer.\n\
\\[term-pager-eob]\t\tMove to the end of the buffer.\n\
\\[term-pager-discard]\t\tKill pending output and kill process.\n\
\\[term-pager-disable]\t\tDisable PAGER handling.\n\n\
\\{term-pager-break-map}\n\
Any other key is passed through to the program
running under the terminal emulator and disables pager processing until
all pending output has been dealt with."))
      nil)))

(defun term-pager-continue (new-count)
  (let ((process (get-buffer-process (current-buffer))))
    (use-local-map term-pager-old-local-map)
    (setq term-pager-old-local-map nil)
    (setq mode-line-format term-old-mode-line-format)
    (force-mode-line-update)
    (setq term-pager-count new-count)
    (set-process-filter process term-pager-old-filter)
    (funcall term-pager-old-filter process "")
    (continue-process process)))

;; Make sure there are DOWN blank lines below the current one.
;; Return 0 if we're unable (because of PAGER handling), else return DOWN.

(defun term-handle-scroll (down)
  (let ((scroll-needed
	 (- (+ (term-current-row) down)
	    (if (< down 0) term-scroll-start term-scroll-end))))
    (when (or (and (< down 0) (< scroll-needed 0))
	      (and (> down 0) (> scroll-needed 0)))
      (let ((save-point (point-marker)) (save-top))
	(goto-char term-home-marker)
	(cond (term-scroll-with-delete
	       (if (< down 0)
		   (progn
		     ;; Delete scroll-needed lines at term-scroll-end,
		     ;; then insert scroll-needed lines.
		     (term-vertical-motion term-scroll-end)
		     (end-of-line)
		     (setq save-top (point))
		     (term-vertical-motion scroll-needed)
		     (end-of-line)
		     (delete-region save-top (point))
		     (goto-char save-point)
		     (setq down (- scroll-needed down))
		     (term-vertical-motion down))
		 ;; Delete scroll-needed lines at term-scroll-start.
		 (term-vertical-motion term-scroll-start)
		 (setq save-top (point))
		 (term-vertical-motion scroll-needed)
		 (delete-region save-top (point))
		 (goto-char save-point)
		 (term-vertical-motion down)
		 (term-adjust-current-row-cache (- scroll-needed)))
	       (setq term-current-column nil)
	       (term-insert-char ?\n (abs scroll-needed)))
	      ((and (numberp term-pager-count)
		    (< (setq term-pager-count (- term-pager-count down))
		       0))
	       (setq down 0)
	       (term-process-pager))
	      (t
	       (term-adjust-current-row-cache (- scroll-needed))
	       (term-vertical-motion scroll-needed)
	       (set-marker term-home-marker (point))))
	(goto-char save-point)
	(set-marker save-point nil))))
  down)

(defun term-down (down &optional check-for-scroll)
  "Move down DOWN screen lines vertically."
  (let ((start-column (term-horizontal-column)))
    (when (and check-for-scroll (or term-scroll-with-delete term-pager-count))
      (setq down (term-handle-scroll down)))
    (unless (and (= (term-current-row) 0) (< down 0))
      (term-adjust-current-row-cache down)
      (when (or (/= (point) (point-max)) (< down 0))
	(setq down (- down (term-vertical-motion down)))))
    (cond ((>= down 0)
	   ;; Extend buffer with extra blank lines if needed.
	   (term-insert-char ?\n down)
	   (setq term-current-column 0)
	   (setq term-start-line-column 0))
	  (t
	   (when (= (term-current-row) 0)
	     ;; Insert lines if at the beginning.
	     (save-excursion (term-insert-char ?\n (- down)))
	     (save-excursion
	       (let (p)
		 ;; Delete lines from the end.
		 (forward-line term-height)
		 (setq p (point))
		 (forward-line (- down))
		 (delete-region p (point)))))
	   (setq term-current-column 0)
	   (setq term-start-line-column (current-column))))
    (when start-column
      (term-move-columns start-column))))

;; Assuming point is at the beginning of a screen line,
;; if the line above point wraps around, add a ?\n to undo the wrapping.
;; FIXME:  Probably should be called more than it is.
(defun term-unwrap-line ()
  (when (not (bolp))
    (let ((old-point (point)))
      (insert-before-markers ?\n)
      (add-text-properties old-point (point)
                           '(term-line-wrap t rear-nonsticky t)))))

(defun term-erase-in-line (kind)
  (when (= kind 1) ;; erase left of point
    (let ((cols (term-horizontal-column)) (saved-point (point)))
      (term-vertical-motion 0)
      (delete-region (point) saved-point)
      (term-insert-char ?  cols)))
  (when (not (eq kind 1)) ;; erase right of point
    (let ((saved-point (point))
	  (wrapped (and (zerop (term-horizontal-column))
			(not (zerop (term-current-column))))))
      (term-vertical-motion 1)
      (delete-region saved-point (point))
      ;; wrapped is true if we're at the beginning of screen line,
      ;; but not a buffer line.  If we delete the current screen line
      ;; that will make the previous line no longer wrap, and (because
      ;; of the way Emacs display works) point will be at the end of
      ;; the previous screen line rather then the beginning of the
      ;; current one.  To avoid that, we make sure that current line
      ;; contain a space, to force the previous line to continue to wrap.
      ;; We could do this always, but it seems preferable to not add the
      ;; extra space when wrapped is false.
      (when wrapped
	(insert ? ))
      (insert ?\n)
      (put-text-property saved-point (point) 'font-lock-face 'default)
      (goto-char saved-point))))

(defun term-erase-in-display (kind)
  "Erase (that is blank out) part of the window.
If KIND is 0, erase from point to point-max;
if KIND is 1, erase from home to point; else erase from home to point-max."
  (term-handle-deferred-scroll)
  (cond ((eq kind 0)
	 (let ((need-unwrap (bolp)))
	   (delete-region (point) (point-max))
	   (when need-unwrap (term-unwrap-line))))
	((let ((row (term-current-row))
	      (col (term-horizontal-column))
	      (start-region term-home-marker)
	      (end-region (if (eq kind 1) (point) (point-max))))
	   (delete-region start-region end-region)
	   (term-unwrap-line)
	   (when (eq kind 1)
	     (term-insert-char ?\n row))
	   (setq term-current-column nil)
	   (setq term-current-row nil)
	   (term-goto row col)))))

(defun term-delete-chars (count)
  (let ((save-point (point)))
    (term-vertical-motion 1)
    (term-unwrap-line)
    (goto-char save-point)
    (move-to-column (+ (term-current-column) count) t)
    (delete-region save-point (point))))

;; Insert COUNT spaces after point, but do not change any of
;; following screen lines.  Hence we may have to delete characters
;; at the end of this screen line to make room.

(defun term-insert-spaces (count)
  (let ((save-point (point)) (save-eol) (pnt-at-eol))
    (term-vertical-motion 1)
    (when (bolp)
      (backward-char))
    (setq save-eol (point)
          pnt-at-eol (line-end-position))
    (move-to-column (+ (term-start-line-column) (- term-width count)) t)
    ;; If move-to-column extends the current line it will use the face
    ;; from the last character on the line, set the face for the chars
    ;; to default.
    (when (>= (point) pnt-at-eol)
      (put-text-property pnt-at-eol (point) 'font-lock-face 'default))
    (when (> save-eol (point))
      (delete-region (point) save-eol))
    (goto-char save-point)
    (term-insert-char ?  count)
    (goto-char save-point)))

(defun term-delete-lines (lines)
  (let ((start (point))
	(save-current-column term-current-column)
	(save-start-line-column term-start-line-column)
	(save-current-row (term-current-row)))
    ;; The number of inserted lines shouldn't exceed the scroll region end.
    ;; The `term-scroll-end' line is part of the scrolling region, so
    ;; we need to go one line past it in order to ensure correct
    ;; scrolling.
    (when (> (+ save-current-row lines) (1+ term-scroll-end))
      (setq lines (- lines (- (+ save-current-row lines) (1+ term-scroll-end)))))
    (term-down lines)
    (delete-region start (point))
    (term-down (- (1+ term-scroll-end) save-current-row lines))
    (term-insert-char ?\n lines)
    (setq term-current-column save-current-column)
    (setq term-start-line-column save-start-line-column)
    (setq term-current-row save-current-row)
    (goto-char start)))

(defun term-insert-lines (lines)
  (let ((start (point))
	(start-deleted)
	(save-current-column term-current-column)
	(save-start-line-column term-start-line-column)
	(save-current-row (term-current-row)))
    ;; Inserting lines should take into account the scroll region.
    ;; The `term-scroll-end' line is part of the scrolling region, so
    ;; we need to go one line past it in order to ensure correct
    ;; scrolling.
    (if (< save-current-row term-scroll-start)
	;; If point is before scroll start,
	(progn
	  (setq lines (- lines (- term-scroll-start save-current-row)))
	  (term-down (- term-scroll-start save-current-row))
	  (setq start (point)))
      ;; The number of inserted lines shouldn't exceed the scroll region end.
      (when (> (+ save-current-row lines) (1+ term-scroll-end))
	(setq lines (- lines (- (+ save-current-row lines)(1+ term-scroll-end)))))
      (term-down (- (1+ term-scroll-end) save-current-row lines)))
    (setq start-deleted (point))
    (term-down lines)
    (delete-region start-deleted (point))
    (goto-char start)
    (setq term-current-column save-current-column)
    (setq term-start-line-column save-start-line-column)
    (setq term-current-row save-current-row)
    (term-insert-char ?\n lines)
    (goto-char start)))
\f
(defun term-start-output-log (name)
  "Record raw inferior process output in a buffer."
  (interactive (list (if term-log-buffer
			 nil
		       (read-buffer "Record output in buffer: "
				    (format "%s output-log"
					    (buffer-name (current-buffer)))
				    nil))))
  (if (or (null name) (equal name ""))
      (progn (setq term-log-buffer nil)
	     (message "Output logging off."))
    (if (get-buffer name)
	nil
      (with-current-buffer (get-buffer-create name)
	(fundamental-mode)
	(buffer-disable-undo (current-buffer))
	(erase-buffer)))
    (setq term-log-buffer (get-buffer name))
    (message "Recording terminal emulator output into buffer \"%s\""
	     (buffer-name term-log-buffer))))

(defun term-stop-output-log ()
  "Discontinue raw inferior process logging."
  (interactive)
  (term-start-output-log nil))

(defun term-show-maximum-output ()
  "Put the end of the buffer at the bottom of the window."
  (interactive)
  (goto-char (point-max))
  (recenter -1))
\f
;;; Do the user's customization...

(defvar term-load-hook nil
  "This hook is run when term is loaded in.
This is a good place to put keybindings.")

(run-hooks 'term-load-hook)

\f
;;; Filename/command/history completion in a buffer
;; ===========================================================================
;; Useful completion functions, courtesy of the Ergo group.

;; Six commands:
;; term-dynamic-complete		Complete or expand command, filename,
;;					history at point.
;; term-dynamic-complete-filename	Complete filename at point.
;; term-dynamic-list-filename-completions List completions in help buffer.
;; term-replace-by-expanded-filename	Expand and complete filename at point;
;;					replace with expanded/completed name.

;; These are not installed in the term-mode keymap.  But they are
;; available for people who want them.  Shell-mode installs them:
;; (define-key shell-mode-map "\t" 'term-dynamic-complete)
;; (define-key shell-mode-map "\M-?"
;;             'term-dynamic-list-filename-completions)))
;;
;; Commands like this are fine things to put in load hooks if you
;; want them present in specific modes.

(defcustom term-completion-autolist nil
  "If non-nil, automatically list possibilities on partial completion.
This mirrors the optional behavior of tcsh."
  :group 'term
  :type 'boolean)

(defcustom term-completion-addsuffix t
  "If non-nil, add a `/' to completed directories, ` ' to file names.
If a cons pair, it should be of the form (DIRSUFFIX . FILESUFFIX) where
DIRSUFFIX and FILESUFFIX are strings added on unambiguous or exact
completion.  This mirrors the optional behavior of tcsh."
  :group 'term
  :type '(choice (const :tag "No suffix" nil)
                 (cons (string :tag "dirsuffix") (string :tag "filesuffix"))
                 (other :tag "Suffix" t)))

(defcustom term-completion-recexact nil
  "If non-nil, use shortest completion if characters cannot be added.
This mirrors the optional behavior of tcsh.

A non-nil value is useful if `term-completion-autolist' is non-nil too."
  :group 'term
  :type 'boolean)

(defcustom term-completion-fignore nil
  "List of suffixes to be disregarded during file completion.
This mirrors the optional behavior of bash and tcsh.

Note that this applies to `term-dynamic-complete-filename' only."
  :group 'term
  :type '(choice (const nil)
                 (repeat :tag "List of suffixes" string)))

(defvar term-file-name-prefix ""
  "Prefix prepended to absolute file names taken from process input.
This is used by term's and shell's completion functions, and by shell's
directory tracking functions.")


(defun term-directory (directory)
  ;; Return expanded DIRECTORY, with `term-file-name-prefix' if absolute.
  (expand-file-name (if (file-name-absolute-p directory)
			(concat term-file-name-prefix directory)
		      directory)))


(defun term-word (word-chars)
  "Return the word of WORD-CHARS at point, or nil if none is found.
Word constituents are considered to be those in WORD-CHARS, which is like the
inside of a \"[...]\" (see `skip-chars-forward')."
  (save-excursion
    (let ((limit (point))
	  (word (concat "[" word-chars "]"))
	  (non-word (concat "[^" word-chars "]")))
      (when (re-search-backward non-word nil 'move)
	(forward-char 1))
      ;; Anchor the search forwards.
      (if (or (eolp) (looking-at non-word))
	  nil
	(re-search-forward (concat word "+") limit)
	(buffer-substring (match-beginning 0) (match-end 0))))))


(defun term-match-partial-filename ()
  "Return the filename at point, or nil if none is found.
Environment variables are substituted.  See `term-word'."
  (let ((filename (term-word "~/A-Za-z0-9+@:_.$#,={}-")))
    (and filename (substitute-in-file-name filename))))


(defun term-dynamic-complete ()
  "Dynamically perform completion at point.
Calls the functions in `term-dynamic-complete-functions' to perform
completion until a function returns non-nil, at which point completion is
assumed to have occurred."
  (interactive)
  (run-hook-with-args-until-success 'term-dynamic-complete-functions))


(defun term-dynamic-complete-filename ()
  "Dynamically complete the filename at point.
Completes if after a filename.  See `term-match-partial-filename' and
`term-dynamic-complete-as-filename'.
This function is similar to `term-replace-by-expanded-filename', except that
it won't change parts of the filename already entered in the buffer; it just
adds completion characters to the end of the filename.  A completions listing
may be shown in a help buffer if completion is ambiguous.

Completion is dependent on the value of `term-completion-addsuffix',
`term-completion-recexact' and `term-completion-fignore', and the timing of
completions listing is dependent on the value of `term-completion-autolist'.

Returns t if successful."
  (interactive)
  (when (term-match-partial-filename)
    (prog2 (or (eq (selected-window) (minibuffer-window))
	       (message "Completing file name..."))
	(term-dynamic-complete-as-filename))))

(defun term-dynamic-complete-as-filename ()
  "Dynamically complete at point as a filename.
See `term-dynamic-complete-filename'.  Returns t if successful."
  (let* ((completion-ignore-case nil)
	 (completion-ignored-extensions term-completion-fignore)
	 (success t)
	 (dirsuffix (cond ((not term-completion-addsuffix) "")
			  ((not (consp term-completion-addsuffix)) "/")
			  (t (car term-completion-addsuffix))))
	 (filesuffix (cond ((not term-completion-addsuffix) "")
			   ((not (consp term-completion-addsuffix)) " ")
			   (t (cdr term-completion-addsuffix))))
	 (filename (or (term-match-partial-filename) ""))
	 (pathdir (file-name-directory filename))
	 (pathnondir (file-name-nondirectory filename))
	 (directory (if pathdir (term-directory pathdir) default-directory))
	 (completion (file-name-completion pathnondir directory))
	 (mini-flag (eq (selected-window) (minibuffer-window))))
    (cond ((null completion)
           (message "No completions of %s" filename)
	   (setq success nil))
          ((eq completion t)            ; Means already completed "file".
           (when term-completion-addsuffix (insert " "))
           (or mini-flag (message "Sole completion")))
          ((string-equal completion "") ; Means completion on "directory/".
           (term-dynamic-list-filename-completions))
          (t                            ; Completion string returned.
           (let ((file (concat (file-name-as-directory directory) completion)))
             (insert (substring (directory-file-name completion)
                                (length pathnondir)))
             (cond ((symbolp (file-name-completion completion directory))
                    ;; We inserted a unique completion.
		    (insert (if (file-directory-p file) dirsuffix filesuffix))
                    (or mini-flag (message "Completed")))
                   ((and term-completion-recexact term-completion-addsuffix
                         (string-equal pathnondir completion)
                         (file-exists-p file))
                    ;; It's not unique, but user wants shortest match.
		    (insert (if (file-directory-p file) dirsuffix filesuffix))
                    (or mini-flag (message "Completed shortest")))
                   ((or term-completion-autolist
                        (string-equal pathnondir completion))
                    ;; It's not unique, list possible completions.
                    (term-dynamic-list-filename-completions))
                   (t
                    (or mini-flag (message "Partially completed")))))))
    success))


(defun term-replace-by-expanded-filename ()
  "Dynamically expand and complete the filename at point.
Replace the filename with an expanded, canonicalized and completed replacement.
\"Expanded\" means environment variables (e.g., $HOME) and `~'s are replaced
with the corresponding directories.  \"Canonicalized\" means `..'  and `.' are
removed, and the filename is made absolute instead of relative.  For expansion
see `expand-file-name' and `substitute-in-file-name'.  For completion see
`term-dynamic-complete-filename'."
  (interactive)
  (replace-match (expand-file-name (term-match-partial-filename)) t t)
  (term-dynamic-complete-filename))


(defun term-dynamic-list-filename-completions ()
  "List in help buffer possible completions of the filename at point."
  (interactive)
  (let* ((completion-ignore-case nil)
	 (filename (or (term-match-partial-filename) ""))
	 (pathdir (file-name-directory filename))
	 (pathnondir (file-name-nondirectory filename))
	 (directory (if pathdir (term-directory pathdir) default-directory))
	 (completions (file-name-all-completions pathnondir directory)))
    (if completions
	(term-dynamic-list-completions completions)
      (message "No completions of %s" filename))))


(defun term-dynamic-list-completions (completions)
  "List in help buffer sorted COMPLETIONS.
Typing SPC flushes the help buffer."
  (let ((conf (current-window-configuration)))
    (with-output-to-temp-buffer "*Completions*"
      (display-completion-list (sort completions 'string-lessp)))
    (message "Hit space to flush")
    (let (key first)
      (if (with-current-buffer (get-buffer "*Completions*")
	    (setq key (read-key-sequence nil)
		  first (aref key 0))
	    (and (consp first)
		 (eq (window-buffer (posn-window (event-start first)))
		     (get-buffer "*Completions*"))
		 (memq (key-binding key)
                       '(choose-completion))))
	  ;; If the user does choose-completion with the mouse,
	  ;; execute the command, then delete the completion window.
	  (progn
	    (choose-completion first)
	    (set-window-configuration conf))
	(if (eq first ?\s)
	    (set-window-configuration conf)
	  (setq unread-command-events
                (nconc (listify-key-sequence key)
                       unread-command-events)))))))

;; I need a make-term that doesn't surround with *s -mm
(defun term-ansi-make-term (name program &optional startfile &rest switches)
  "Make a term process NAME in a buffer, running PROGRAM.
The name of the buffer is NAME.
If there is already a running process in that buffer, it is not restarted.
Optional third arg STARTFILE is the name of a file to send the contents of to
the process.  Any more args are arguments to PROGRAM."
  (let ((buffer (get-buffer-create name )))
    ;; If no process, or nuked process, crank up a new one and put buffer in
    ;; term mode.  Otherwise, leave buffer and existing process alone.
    (cond ((not (term-check-proc buffer))
	   (with-current-buffer buffer
	     (term-mode)) ; Install local vars, mode, keymap, ...
	   (term-exec buffer name program startfile switches)))
    buffer))

(defvar term-ansi-buffer-name nil)
(defvar term-ansi-default-program nil)
(defvar term-ansi-buffer-base-name nil)

;;;###autoload
(defun ansi-term (program &optional new-buffer-name)
  "Start a terminal-emulator in a new buffer.
This is almost the same as `term' apart from always creating a new buffer,
and `C-x' being marked as a `term-escape-char'."
  (interactive (list (read-from-minibuffer "Run program: "
					   (or explicit-shell-file-name
					       (getenv "ESHELL")
					       shell-file-name))))

  ;; Pick the name of the new buffer.
  (setq term-ansi-buffer-name
	(if new-buffer-name
	    new-buffer-name
	  (if term-ansi-buffer-base-name
	      (if (eq term-ansi-buffer-base-name t)
		  (file-name-nondirectory program)
		term-ansi-buffer-base-name)
	    "ansi-term")))

  (setq term-ansi-buffer-name (concat "*" term-ansi-buffer-name "*"))

  ;; In order to have more than one term active at a time
  ;; I'd like to have the term names have the *term-ansi-term<?>* form,
  ;; for now they have the *term-ansi-term*<?> form but we'll see...

  (setq term-ansi-buffer-name (generate-new-buffer-name term-ansi-buffer-name))
  (let ((prog (split-string-shell-command program)))
    (setq term-ansi-buffer-name
          (apply #'term-ansi-make-term term-ansi-buffer-name (car prog)
                 nil (cdr prog))))

  (set-buffer term-ansi-buffer-name)
  (term-mode)
  (term-char-mode)

  ;; Historical baggage.  A call to term-set-escape-char used to not
  ;; undo any previous call to t-s-e-c.  Because of this, ansi-term
  ;; ended up with both C-x and C-c as escape chars.  Who knows what
  ;; the original intention was, but people could have become used to
  ;; either.   (Bug#12842)
  (let (term-escape-char)
    ;; I wanna have find-file on C-x C-f -mm
    ;; your mileage may definitely vary, maybe it's better to put this in your
    ;; .emacs ...
    (term-set-escape-char ?\C-x))

  (switch-to-buffer term-ansi-buffer-name))

\f
;;; Serial terminals
;; ===========================================================================
(defun serial-port-is-file-p ()
  "Guess whether serial ports are files on this system.
Return t if this is a Unix-based system, where serial ports are
files, such as /dev/ttyS0.
Return nil if this is Windows or DOS, where serial ports have
special identifiers such as COM1."
  (not (memq system-type '(windows-nt cygwin ms-dos))))

(defvar serial-name-history
  (if (serial-port-is-file-p)
      (or (when (file-exists-p "/dev/ttys0") (list "/dev/ttys0"))
          (when (file-exists-p "/dev/ttyS0") (list "/dev/ttyS0")))
    (list "COM1"))
  "History of serial ports used by `serial-read-name'.")

(defvar serial-speed-history
  ;; Initialized with reasonable values for newbies.
  (list "9600" ;; Given twice because 9600 b/s is the most common speed
        "1200" "2400" "4800" "9600" "14400" "19200"
        "28800" "38400" "57600" "115200")
  "History of serial port speeds used by `serial-read-speed'.")

(defun serial-nice-speed-history ()
  "Return `serial-speed-history' cleaned up for a mouse-menu."
  (let ((x) (y))
    (setq x
         (sort
          (copy-sequence serial-speed-history)
          (lambda (a b) (when (and (stringp a) (stringp b))
                     (> (string-to-number a) (string-to-number b))))))
    (dolist (i x) (when (not (equal i (car y))) (push i y)))
    y))

(defconst serial-no-speed "nil"
  "String for `serial-read-speed' for special serial ports.
If `serial-read-speed' reads this string from the user, it
returns nil, which is recognized by `serial-process-configure'
for special serial ports that cannot be configured.")

(defun serial-supported-or-barf ()
  "Signal an error if serial processes are not supported."
  (unless (fboundp 'make-serial-process)
    (error "Serial processes are not supported on this system")))

(defun serial-read-name ()
  "Read a serial port name from the user.
Try to be nice by providing useful defaults and history.
On Windows, prepend \\.\ to the port name unless it already
contains a backslash.  This handles the legacy ports COM1-COM9 as
well as the newer ports COM10 and higher."
  (serial-supported-or-barf)
  (let* ((file-name-history serial-name-history)
         (h (car file-name-history))
         (x (if (serial-port-is-file-p)
                (read-file-name
                 ;; `prompt': The most recently used port is provided as
                 ;; the default value, which is used when the user
                 ;; simply presses return.
                 (format-prompt "Serial port" h)
                 ;; `directory': Most systems have their serial ports
                 ;; in the same directory, so start in the directory
                 ;; of the most recently used port, or in a reasonable
                 ;; default directory.
                 (or (and h (file-name-directory h))
                     (and (file-exists-p "/dev/") "/dev/")
                     (and (file-exists-p "/") "/"))
                 ;; `default': This causes (read-file-name) to return
                 ;; the empty string if he user simply presses return.
                 ;; Using nil here may result in a default directory
                 ;; of the current buffer, which is not useful for
                 ;; serial port.
                 "")
              (read-from-minibuffer
               (format-prompt "Serial port" h)
               nil nil nil '(file-name-history . 1) nil nil))))
    (if (or (null x) (and (stringp x) (zerop (length x))))
        (setq x h)
      (setq serial-name-history file-name-history))
    (when (or (null x) (and (stringp x) (zerop (length x))))
      (error "No serial port selected"))
    (when (not (or (serial-port-is-file-p)
                   (string-search "\\" x)))
      (setq x (concat "\\\\.\\" x)))
    x))

(defun serial-read-speed ()
  "Read a serial port speed (in bits per second) from the user.
Try to be nice by providing useful defaults and history."
  (serial-supported-or-barf)
  (let* ((history serial-speed-history)
         (h (car history))
         (x (read-from-minibuffer
             (cond ((string= h serial-no-speed)
                    "Speed (default nil = set by port): ")
                   (h
                    (format-prompt "Speed" (format "%s b/s" h)))
                   (t "Speed (b/s): "))
             nil nil nil '(history . 1) nil nil)))
    (when (or (null x) (and (stringp x) (zerop (length x))))
      (setq x h))
    (when (or (null x) (not (stringp x)) (zerop (length x)))
      (error "Invalid speed"))
    (if (string= x serial-no-speed)
        (setq x nil)
      (setq x (string-to-number x))
      (when (or (null x) (not (integerp x)) (<= x 0))
        (error "Invalid speed")))
    (setq serial-speed-history history)
    x))

;;;###autoload
(defun serial-term (port speed &optional line-mode)
  "Start a terminal-emulator for a serial port in a new buffer.
PORT is the path or name of the serial port.  For example, this
could be \"/dev/ttyS0\" on Unix.  On Windows, this could be
\"COM1\" or \"\\\\.\\COM10\".

SPEED is the speed of the serial port in bits per second.  9600
is a common value.  SPEED can be nil, see
`serial-process-configure' for details.

Usually `term-char-mode' is used, but if LINE-MODE (the prefix
when used interactively) is non-nil, `term-line-mode' is used
instead.

The buffer is in Term mode; see `term-mode' for the commands to
use in that buffer.

\\<term-raw-map>Type \\[switch-to-buffer] to switch to another buffer."
  (interactive (list (serial-read-name) (serial-read-speed)
                     current-prefix-arg))
  (serial-supported-or-barf)
  (let* ((process (make-serial-process
                   :port port
                   :speed speed
                   :coding 'no-conversion
                   :noquery t))
         (buffer (process-buffer process)))
    (with-current-buffer buffer
      (term-mode)
      (unless line-mode
        (term-char-mode))
      (goto-char (point-max))
      (set-marker (process-mark process) (point))
      (set-process-filter process #'term-emulate-terminal)
      (set-process-sentinel process #'term-sentinel))
    (switch-to-buffer buffer)
    buffer))

(defvar serial-mode-line-speed-menu nil)
(defvar serial-mode-line-config-menu nil)

(defun serial-speed ()
  "Return the speed of the serial port of the current buffer's process.
The return value may be nil for a special serial port."
  (process-contact (get-buffer-process (current-buffer)) :speed))

(defun serial-mode-line-speed-menu-1 (event)
  (interactive "e")
  (save-selected-window
    (select-window (posn-window (event-start event)))
    (serial-update-speed-menu)
    (let* ((selection (serial-mode-line-speed-menu event))
	   (binding (and selection (lookup-key serial-mode-line-speed-menu
					       (vector (car selection))))))
      (when binding (call-interactively binding)))))

(defun serial-mode-line-speed-menu (event)
  (x-popup-menu event serial-mode-line-speed-menu))

(defun serial-update-speed-menu ()
  (setq serial-mode-line-speed-menu (make-sparse-keymap "Speed (b/s)"))
  (define-key serial-mode-line-speed-menu [serial-mode-line-speed-menu-other]
    '(menu-item "Other..."
                (lambda (event) (interactive "e")
                  (let ((speed (serial-read-speed)))
                    (serial-process-configure :speed speed)
                    (term-update-mode-line)
                    (message "Speed set to %d b/s" speed)))))
  (dolist (str (serial-nice-speed-history))
    (let ((num (or (and (stringp str) (string-to-number str)) 0)))
      (define-key
        serial-mode-line-speed-menu
        (vector (make-symbol (format "serial-mode-line-speed-menu-%s" str)))
        `(menu-item
          ,str
          (lambda (event) (interactive "e")
            (serial-process-configure :speed ,num)
            (term-update-mode-line)
            (message "Speed set to %d b/s" ,num))
          :button (:toggle . (= (serial-speed) ,num)))))))

(defun serial-mode-line-config-menu-1 (event)
  (interactive "e")
  (save-selected-window
    (select-window (posn-window (event-start event)))
    (serial-update-config-menu)
    (let* ((selection (serial-mode-line-config-menu event))
           (binding (and selection (lookup-key serial-mode-line-config-menu
                                               (vector (car selection))))))
      (when binding (call-interactively binding)))))

(defun serial-mode-line-config-menu (event)
  (x-popup-menu event serial-mode-line-config-menu))

(defun serial-update-config-menu ()
  (setq serial-mode-line-config-menu (make-sparse-keymap "Configuration"))
  (let ((config (process-contact
                 (get-buffer-process (current-buffer)) t)))
    (dolist (y '((:flowcontrol hw   "Hardware flowcontrol (RTS/CTS)")
                 (:flowcontrol sw   "Software flowcontrol (XON/XOFF)")
                 (:flowcontrol nil  "No flowcontrol")
                 (:stopbits    2    "2 stopbits")
                 (:stopbits    1    "1 stopbit")
                 (:parity      odd  "Odd parity")
                 (:parity      even "Even parity")
                 (:parity      nil  "No parity")
                 (:bytesize    7    "7 bits per byte")
                 (:bytesize    8    "8 bits per byte")))
      (define-key serial-mode-line-config-menu
        (vector (make-symbol (format "%s-%s" (nth 0 y) (nth 1 y))))
        `(menu-item
          ,(nth 2 y)
          (lambda (event) (interactive "e")
            (serial-process-configure ,(nth 0 y) ',(nth 1 y))
            (term-update-mode-line)
            (message "%s" ,(nth 2 y)))
          ;; Use :toggle instead of :radio because a non-standard port
          ;; configuration may not match any menu items.
          :button (:toggle . ,(equal (plist-get config (nth 0 y))
                                     (nth 1 y))))))))

\f
;;; Converting process modes to use term mode
;; ===========================================================================
;; Renaming variables
;; Most of the work is renaming variables and functions.  These are the common
;; ones:
;; Local variables:
;;	last-input-start	term-last-input-start
;; 	last-input-end		term-last-input-end
;;	shell-prompt-pattern	term-prompt-regexp
;;     shell-set-directory-error-hook <no equivalent>
;; Miscellaneous:
;;	shell-set-directory	<unnecessary>
;; 	shell-mode-map		term-mode-map
;; Commands:
;;	shell-send-input	term-send-input
;;	shell-send-eof		term-delchar-or-maybe-eof
;; 	kill-shell-input	term-kill-input
;;	interrupt-shell-subjob	term-interrupt-subjob
;;	stop-shell-subjob	term-stop-subjob
;;	quit-shell-subjob	term-quit-subjob
;;	kill-shell-subjob	term-kill-subjob
;;	kill-output-from-shell	term-kill-output
;;	show-output-from-shell	term-show-output
;;	copy-last-shell-input	Use term-previous-input/term-next-input
;;
;; SHELL-SET-DIRECTORY is gone, its functionality taken over by
;; SHELL-DIRECTORY-TRACKER, the shell mode's term-input-filter-functions.
;; Term mode does not provide functionality equivalent to
;; shell-set-directory-error-hook; it is gone.
;;
;; term-last-input-start is provided for modes which want to munge
;; the buffer after input is sent, perhaps because the inferior
;; insists on echoing the input.  The LAST-INPUT-START variable in
;; the old shell package was used to implement a history mechanism,
;; but you should think twice before using term-last-input-start
;; for this; the input history ring often does the job better.
;;
;; If you are implementing some process-in-a-buffer mode, called foo-mode, do
;; *not* create the term-mode local variables in your foo-mode function.
;; This is not modular.  Instead, call term-mode, and let *it* create the
;; necessary term-specific local variables.  Then create the
;; foo-mode-specific local variables in foo-mode.  Set the buffer's keymap to
;; be foo-mode-map, and its mode to be foo-mode.  Set the term-mode hooks
;; (term-{prompt-regexp, input-filter, input-filter-functions,
;; get-old-input) that need to be different from the defaults.  Call
;; foo-mode-hook, and you're done.  Don't run the term-mode hook yourself;
;; term-mode will take care of it.  The following example, from shell.el,
;; is typical:
;;
;; (defvar shell-mode-map
;;   (let ((map (make-sparse-keymap)))
;;     (define-key map "\C-c\C-f" 'shell-forward-command)
;;     (define-key map "\C-c\C-b" 'shell-backward-command)
;;     (define-key map "\t" 'term-dynamic-complete)
;;     (define-key map "\M-?"
;;       'term-dynamic-list-filename-completions)))
;;
;; (define-derived-mode shell-mode term-mode "Shell"
;;   "A shell mode."
;;   (setq-local term-prompt-regexp shell-prompt-pattern)
;;   (setq-local shell-directory-stack nil)
;;   (add-hook 'term-input-filter-functions #'shell-directory-tracker nil t))
;;
;; Completion for term-mode users
;;
;; For modes that use term-mode, term-dynamic-complete-functions is the
;; hook to add completion functions to.  Functions on this list should return
;; non-nil if completion occurs (i.e., further completion should not occur).
;; You could use completion-in-region to do the bulk of the
;; completion job.
\f
(provide 'term)

;;; term.el ends here

debug log:

solving 2a7eb72363 ...
found 2a7eb72363 in https://yhetil.org/emacs-bugs/878rpjl2zh.fsf@web.de/
found a8e44b4c34 in https://git.savannah.gnu.org/cgit/emacs.git
preparing index
index prepared:
100644 a8e44b4c34fe8f9b6b97e76fde166f72813a0f03	lisp/term.el

applying [1/1] https://yhetil.org/emacs-bugs/878rpjl2zh.fsf@web.de/
diff --git a/lisp/term.el b/lisp/term.el
index a8e44b4c34..2a7eb72363 100644

Checking patch lisp/term.el...
Applied patch lisp/term.el cleanly.

index at:
100644 2a7eb723632ef09d37883fc2cd90ea4dab1c5ad5	lisp/term.el

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).