unofficial mirror of bug-gnu-emacs@gnu.org 
 help / color / mirror / code / Atom feed
blob 38fb641acf700435fad2280f30b5e71cc7e75634 151622 bytes (raw)
name: lisp/speedbar.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
 
;;; speedbar.el --- quick access to files and tags in a frame  -*- lexical-binding: t; -*-

;; Copyright (C) 1996-2024 Free Software Foundation, Inc.

;; Author: Eric M. Ludlam <zappo@gnu.org>
;; Keywords: file, tags, tools

;; 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/>.

;;; Commentary:
;;
;;   The speedbar provides a frame in which files, and locations in
;; files are displayed.  These items can be clicked on with mouse-2 in
;; to display that file location.
;;
;;; Customizing and Developing for speedbar
;;
;; Please see the speedbar manual for information.
;;
;;; Notes:
;;
;;    AUC-TEX users: The imenu tags for AUC-TEX mode don't work very
;; well.  Use the imenu keywords from tex-mode.el for better results.
;;
;;; Developing for speedbar
;;
;; Adding a speedbar specialized display mode:
;;
;; Speedbar can be configured to create a special display for certain
;; modes that do not display traditional file/tag data.  Rmail, Info,
;; and the debugger are examples.  These modes can, however, benefit
;; from a speedbar style display in their own way.
;;
;; If your `major-mode' is `foo-mode', the only requirement is to
;; create a function called `foo-speedbar-buttons' which takes one
;; argument, BUFFER.  BUFFER will be the buffer speedbar wants filled.
;; In `foo-speedbar-buttons' there are several functions that make
;; building a speedbar display easy.  See the documentation for
;; `speedbar-with-writable' (needed because the buffer is usually
;; read-only) `speedbar-make-tag-line', `speedbar-insert-button', and
;; `speedbar-insert-generic-list'.  If you use
;; `speedbar-insert-generic-list', also read the doc for
;; `speedbar-tag-hierarchy-method' in case you wish to override it.
;; The macro `dframe-with-attached-buffer' brings you back to the
;; buffer speedbar is displaying for.
;;
;; For those functions that make buttons, the "function" should be a
;; symbol that is the function to call when clicked on.  The "token"
;; is extra data you can pass along.  The "function" must take three
;; parameters.  They are (TEXT TOKEN INDENT).  TEXT is the text of the
;; button clicked on.  TOKEN is the data passed in when you create the
;; button.  INDENT is an indentation level, or 0.  You can store
;; indentation levels with `speedbar-make-tag-line' which creates a
;; line with an expander (eg.  [+]) and a text button.
;;
;; Some useful functions when writing expand functions, and click
;; functions are `speedbar-change-expand-button-char',
;; `speedbar-delete-subblock', and `speedbar-center-buffer-smartly'.
;; The variable `speedbar-power-click' is set to t in your functions
;; when the user shift-clicks.  This is an indication of anything from
;; refreshing cached data to making a buffer appear in a new frame.
;;
;; If you wish to add to the default speedbar menu for the case of
;; `foo-mode', create a variable `foo-speedbar-menu-items'.  This
;; should be a list compatible with the `easymenu' package.  It will
;; be spliced into the main menu.  (Available with click-mouse-3).  If
;; you wish to have extra key bindings in your special mode, create a
;; variable `foo-speedbar-key-map'.  Instead of using `make-keymap',
;; or `make-sparse-keymap', use the function
;; `speedbar-make-specialized-keymap'.  This lets you inherit all of
;; speedbar's default bindings with low overhead.
;;
;; Adding a speedbar top-level display mode:
;;
;; Unlike the specialized modes, there are no name requirements,
;; however the methods for writing a button display, menu, and keymap
;; are the same.  Once you create these items, you can call the
;; function `speedbar-add-expansion-list'.  It takes one parameter
;; which is a list element of the form (NAME MENU KEYMAP &rest
;; BUTTON-FUNCTIONS).  NAME is a string that will show up in the
;; Displays menu item.  MENU is a symbol containing the menu items to
;; splice in.  KEYMAP is a symbol holding the keymap to use, and
;; BUTTON-FUNCTIONS are the function names to call, in order, to create
;; the display.
;;  Another tweakable variable is `speedbar-stealthy-function-list'
;; which is of the form (NAME &rest FUNCTION ...).  NAME is the string
;; name matching `speedbar-add-expansion-list'.  (It does not need to
;; exist.). This provides additional display info which might be
;; time-consuming to calculate.
;;  Lastly, `speedbar-mode-functions-list' allows you to set special
;; function overrides.

;;; TODO:
;; - Timeout directories we haven't visited in a while.

(require 'dframe)
(require 'ezimage)

;; customization stuff
(defgroup speedbar nil
  "File and tag browser frame."
  :group 'etags
  :group 'tools
  :group 'convenience
  :link '(custom-manual "(speedbar) Top")
  :link '(info-link "(speedbar) Customizing")
;  :version "20.3"
  )

(defgroup speedbar-faces nil
  "Faces used in speedbar."
  :prefix "speedbar-"
  :link '(info-link "(speedbar) Frames and Faces")
  :group 'speedbar
  :group 'faces)

(defgroup speedbar-vc nil
  "Version control display in speedbar."
  :link '(info-link "(speedbar) Version Control")
  :prefix "speedbar-"
  :group 'speedbar)

(defcustom speedbar-use-images ezimage-use-images
  "Non-nil if speedbar should display icons."
  :group 'speedbar
  :version "21.1"
  :type 'boolean)

;;; Code:

(defvar speedbar-initial-expansion-mode-alist
  '(("buffers" speedbar-buffer-easymenu-definition speedbar-buffers-key-map
     speedbar-buffer-buttons)
    ("quick buffers" speedbar-buffer-easymenu-definition speedbar-buffers-key-map
     speedbar-buffer-buttons-temp)
    ;; Files last, means first in the Displays menu
    ("files" speedbar-easymenu-definition-special speedbar-file-key-map
     speedbar-directory-buttons speedbar-default-directory-list)
    )
  "List of named expansion elements for filling the speedbar frame.
These expansion lists are only valid for regular files.  Special modes
still get to override this list on a mode-by-mode basis.  This list of
lists is of the form (NAME MENU KEYMAP FN1 FN2 ...).  NAME is a string
representing the types of things to be displayed.  MENU is an easymenu
structure used when in this mode.  KEYMAP is a local keymap to install
over the regular speedbar keymap.  FN1 ...  are functions that will be
called in order.  These functions will always get the default
directory to use passed in as the first parameter, and a 0 as the
second parameter.  The 0 indicates the uppermost indentation level.
They must assume that the cursor is at the position where they start
inserting buttons.")

(defvar speedbar-initial-expansion-list-name "files"
  "A symbol name representing the expansion list to use.
The expansion list `speedbar-initial-expansion-mode-alist' contains
the names and associated functions to use for buttons in speedbar.")

(defvar speedbar-previously-used-expansion-list-name "files"
  "Save the last expansion list method.
This is used for returning to a previous expansion list method when
the user is done with the current expansion list.")

(defvar speedbar-stealthy-function-list
  '(("files"
     speedbar-update-current-file
     speedbar-check-read-only
     speedbar-check-vc
     speedbar-check-objects)
    )
  "List of functions to periodically call stealthily.
This list is of the form:
  ( (\"NAME\" FUNCTION ...)
    ...)
where NAME is the name of the major display mode these functions are
for, and the remaining elements FUNCTION are functions to call in order.
Each function must return nil if interrupted, or t if completed.
Stealthy functions which have a single operation should always return t.
Functions which take a long time should maintain a state (where they
are in their speedbar related calculations) and permit interruption.
See `speedbar-check-vc' as a good example.")

(defvar speedbar-mode-functions-list
  '(("files" (speedbar-item-info . speedbar-files-item-info)
     (speedbar-line-directory . speedbar-files-line-directory))
    ("buffers" (speedbar-item-info . speedbar-buffers-item-info)
     (speedbar-line-directory . speedbar-buffers-line-directory))
    ("quick buffers" (speedbar-item-info . speedbar-buffers-item-info)
     (speedbar-line-directory . speedbar-buffers-line-directory))
    )
  "List of function tables to use for different major display modes.
It is not necessary to define any functions for a specialized mode.
This just provides a simple way of adding lots of customizations.
Each sublist is of the form:
  (\"NAME\" (FUNCTIONSYMBOL . REPLACEMENTFUNCTION) ...)
Where NAME is the name of the specialized mode.  The rest of the list
is a set of dotted pairs of the form FUNCTIONSYMBOL, which is the name
of a function you would like to replace, and REPLACEMENTFUNCTION,
which is a function you can call instead.  Not all functions can be
replaced this way.  Replaceable functions must provide that
functionality individually.")

(defcustom speedbar-mode-specific-contents-flag t
  "Non-nil means speedbar will show special mode contents.
This permits some modes to create customized contents for the speedbar
frame."
  :group 'speedbar
  :type 'boolean)

(defcustom speedbar-query-confirmation-method 'all
  "Query control for file operations.
The `all' flag means to always query before file operations.
The `none-but-delete' flag means to not query before any file
operations, except before a file deletion."
  :group 'speedbar
  :type '(radio (const :tag "Always Query before some file operations."
		       all)
		(const :tag "Never Query before file operations, except for deletions."
		       none-but-delete)
;;;;		(const :tag "Never Every Query."
;;;;		       none)
		))

(defvar speedbar-special-mode-expansion-list nil
  "Default function list for creating specialized button lists.
This list is set by modes that wish to have special speedbar displays.
The list is of function names.  Each function is called with one
parameter BUFFER, the originating buffer.  The current buffer is the
speedbar buffer.")

(defvar speedbar-special-mode-key-map nil
  "Default keymap used when identifying a specialized display mode.
This keymap is local to each buffer that wants to define special keybindings
effective when its display is shown.")

(defcustom speedbar-before-visiting-file-hook '(push-mark)
  "Hooks run before speedbar visits a file in the selected frame.
The default buffer is the buffer in the selected window in the attached frame."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-visiting-file-hook nil
  "Hooks run when speedbar visits a file in the selected frame."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-before-visiting-tag-hook '(push-mark)
  "Hooks run before speedbar visits a tag in the selected frame.
The default buffer is the buffer in the selected window in the attached frame."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-visiting-tag-hook '(speedbar-highlight-one-tag-line)
  "Hooks run when speedbar visits a tag in the selected frame."
  :group 'speedbar
  :type 'hook
  :options '(speedbar-highlight-one-tag-line
	     speedbar-recenter-to-top
	     speedbar-recenter
	     ))

(defcustom speedbar-load-hook nil
  "Hooks run when speedbar is loaded."
  :group 'speedbar
  :type 'hook)
(make-obsolete-variable 'speedbar-load-hook
                        "use `with-eval-after-load' instead." "28.1")

(defcustom speedbar-reconfigure-keymaps-hook nil
  "Hooks run when the keymaps are regenerated."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-show-unknown-files nil
  "Non-nil show files we can't expand with a ? in the expand button.
A nil value means don't show the file in the list."
  :group 'speedbar
  :type 'boolean)

(defcustom speedbar-frame-parameters '((minibuffer . nil)
				       (width . 20)
				       (border-width . 0)
				       (menu-bar-lines . 0)
				       (tool-bar-lines . 0)
				       (tab-bar-lines . 0)
				       (unsplittable . t)
				       (left-fringe . 0)
				       )
  "Parameters to use when creating the speedbar frame in Emacs.
Any parameter supported by a frame may be added.  The parameter `height'
will be initialized to the height of the frame speedbar is
attached to and added to this list before the new frame is initialized."
  :group 'speedbar
  :type '(repeat (cons :format "%v"
		       (symbol :tag "Parameter")
		       (sexp :tag "Value")))
  :version "30.1")

(defcustom speedbar-use-imenu-flag t
  "Non-nil means use imenu for file parsing, nil to use etags.
Etags support is not as robust as imenu support." ; See Bug#51102
  :tag "Use Imenu for tags"
  :group 'speedbar
  :type 'boolean)

(defvar speedbar-dynamic-tags-function-list
  '((speedbar-fetch-dynamic-imenu . speedbar-insert-imenu-list)
    (speedbar-fetch-dynamic-etags . speedbar-insert-etags-list))
  "Set to a list of functions which will return and insert a list of tags.
Each element is of the form ( FETCH . INSERT ) where FETCH
is a function which takes one parameter (the file to tag) and returns a
list of tags.  The tag list can be of any form as long as the
corresponding insert method can handle it.  If it returns t, then an
error occurred, and the next fetch routine is tried.
INSERT is a function which takes an INDENTation level, and a LIST of
tags to insert.  It will then create the speedbar buttons.")

(defcustom speedbar-use-tool-tips-flag (fboundp 'tooltip-mode)
  "Non-nil means to use tool tips if they are available.
When tooltips are not available, mouse-tracking and minibuffer
display is used instead."
  :group 'speedbar
  :type 'boolean)

(defcustom speedbar-track-mouse-flag (not speedbar-use-tool-tips-flag)
  "Non-nil means to display info about the line under the mouse."
  :group 'speedbar
  :type 'boolean)

(defcustom speedbar-default-position 'left-right
  "Default position of the speedbar frame.
Possible values are `left', `right' or `left-right'.
If value is `left-right', the most suitable location is
determined automatically."
  :group 'speedbar
  :type '(radio (const :tag "Automatic" left-right)
		(const :tag "Left" left)
		(const :tag "Right" right)))

(defcustom speedbar-sort-tags nil
  "If non-nil, sort tags in the speedbar display.  *Obsolete*.
Use `speedbar-tag-hierarchy-method' instead."
  :group 'speedbar
  :type 'boolean)

(defcustom speedbar-tag-hierarchy-method
  '(speedbar-prefix-group-tag-hierarchy
    speedbar-trim-words-tag-hierarchy)
  "List of hooks which speedbar will use to organize tags into groups.
Groups are defined as expandable meta-tags.  Imenu supports
such things in some languages, such as separating variables from
functions.  Each hook takes one argument LST, and may destructively
create a new list of the same form.  LST is a list of elements of the
form:
  (ELT1 ELT2 ... ELTn)
where each ELT is of the form
  (TAG-NAME-STRING . NUMBER-OR-MARKER)
or
  (GROUP-NAME-STRING ELT1 ELT2... ELTn)"
  :group 'speedbar
  :type 'hook
  :options '(speedbar-prefix-group-tag-hierarchy
	     speedbar-trim-words-tag-hierarchy
	     speedbar-simple-group-tag-hierarchy
	     speedbar-sort-tag-hierarchy)
  )

(defcustom speedbar-tag-group-name-minimum-length 4
  "The minimum length of a prefix group name before expanding.
Thus, if the `speedbar-tag-hierarchy-method' includes `prefix-group'
and one such groups common characters is less than this number of
characters, then the group name will be changed to the form of:
  worda to wordb
instead of just
  word
This way we won't get silly looking listings."
  :group 'speedbar
  :type 'integer)

(defcustom speedbar-tag-split-minimum-length 20
  "Minimum length before we stop trying to create sub-lists in tags.
This is used by all tag-hierarchy methods that break large lists into
sub-lists."
  :group 'speedbar
  :type 'integer)

(defcustom speedbar-tag-regroup-maximum-length 10
  "Maximum length of submenus that are regrouped.
If the regrouping option is used, then if two or more short subgroups
are next to each other, then they are combined until this number of
items is reached."
  :group 'speedbar
  :type 'integer)

(defcustom speedbar-directory-button-trim-method 'span
  "Indicates how the directory button will be displayed.
Possible values are:
 `span' - span large directories over multiple lines.
 `trim' - trim large directories to only show the last few.
 nil    - no trimming."
  :group 'speedbar
  :type '(radio (const :tag "Span large directories over multiple lines."
		       span)
		(const :tag "Trim large directories to only show the last few."
		       trim)
		(const :tag "No trimming." nil)))

(defcustom speedbar-smart-directory-expand-flag t
  "Non-nil means speedbar should use smart expansion.
Smart expansion only affects when speedbar wants to display a
directory for a file in the attached frame.  When smart expansion is
enabled, new directories which are children of a displayed directory
are expanded in the current framework.  If nil, then the current
hierarchy would be replaced with the new directory."
  :group 'speedbar
  :type 'boolean)

(defcustom speedbar-indentation-width 1
  "When sub-nodes are expanded, the number of spaces used for indentation."
  :group 'speedbar
  :type 'integer)

(defcustom speedbar-hide-button-brackets-flag nil
  "Non-nil means speedbar will hide the brackets around the + or -."
  :group 'speedbar
  :type 'boolean)

(defcustom speedbar-before-popup-hook nil
  "Hooks called before popping up the speedbar frame."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-after-create-hook '(speedbar-frame-reposition-smartly)
  "Hooks called after popping up the speedbar frame."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-before-delete-hook nil
  "Hooks called before deleting the speedbar frame."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-mode-hook nil
  "Hook run after creating a speedbar buffer."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-timer-hook nil
  "Hooks called after running the speedbar timer function."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-verbosity-level 1
  "Verbosity level of the speedbar.
0 means say nothing.
1 means medium level verbosity.
2 and higher are higher levels of verbosity."
  :group 'speedbar
  :type 'integer)

(defvar speedbar-indicator-separator " "
  "String separating file text from indicator characters.")

(defcustom speedbar-vc-do-check t
  "Non-nil check all files in speedbar to see if they have been checked out.
Any file checked out is marked with `speedbar-vc-indicator'."
  :group 'speedbar-vc
  :type 'boolean)

(defvar speedbar-vc-indicator "*"
  "Text used to mark files which are currently checked out.
Other version control systems can be added by examining the function
`speedbar-vc-directory-enable-hook' and `speedbar-vc-in-control-hook'.")

(defcustom speedbar-vc-directory-enable-hook nil
  "Return non-nil if the current directory should be checked for Version Control.
Functions in this hook must accept one parameter which is the directory
being checked."
  :group 'speedbar-vc
  :type 'hook)

(defcustom speedbar-vc-in-control-hook nil
  "Return non-nil if the specified file is under Version Control.
Functions in this hook must accept two parameters.  The DIRECTORY of the
current file, and the FILENAME of the file being checked."
  :group 'speedbar-vc
  :type 'hook)

(defvar speedbar-vc-to-do-point nil
  "Local variable maintaining the current version control check position.")

(defcustom speedbar-obj-do-check t
  "Non-nil check all files in speedbar to see if they have an object file.
Any file checked out is marked with `speedbar-obj-indicator', and the
marking is based on `speedbar-obj-alist'."
  :group 'speedbar-vc
  :type 'boolean)

(defvar speedbar-obj-to-do-point nil
  "Local variable maintaining the current version control check position.")

(defvar speedbar-obj-indicator '("#" . "!")
  "Text used to mark files that have a corresponding hidden object file.
The car is for an up-to-date object.  The cdr is for an out of date object.
The expression `speedbar-obj-alist' defines who gets tagged.")

(defvar speedbar-obj-alist
  '(("\\.\\([cpC]\\|cpp\\|cc\\|cxx\\)$" . ".o")
    ("\\.el$" . ".elc")
    ("\\.java$" . ".class")
    ("\\.f\\(or\\|90\\|77\\)?$" . ".o")
    ("\\.tex$" . ".dvi")
    ("\\.texi$" . ".info"))
  "Alist of file extensions, and their corresponding object file type.")

(defvar speedbar-ro-to-do-point nil
  "Local variable maintaining the current read only check position.")

(defvar speedbar-object-read-only-indicator "%"
  "Indicator to append onto a line if that item is Read Only.")

;; Note: Look for addition place to add indicator lists that
;; use skip-chars instead of a regular expression.
(defvar speedbar-indicator-regex
  (concat (regexp-quote speedbar-indicator-separator)
	  "\\("
	  (regexp-quote speedbar-vc-indicator)
	  "\\|"
	  (regexp-quote (car speedbar-obj-indicator))
	  "\\|"
	  (regexp-quote (cdr speedbar-obj-indicator))
	  "\\|"
	  (regexp-quote speedbar-object-read-only-indicator)
	  "\\)*")
  "Regular expression used when identifying files.
Permits stripping of indicator characters from a line.")

(defcustom speedbar-scanner-reset-hook nil
  "Hook called whenever generic scanners are reset.
Set this to implement your own scanning / rescan safe functions with
state data."
  :group 'speedbar
  :type 'hook)

(defcustom speedbar-ignored-modes '(fundamental-mode)
  "List of major modes which speedbar will not switch directories for."
  :group 'speedbar
  :type '(choice (const nil)
		 (repeat :tag "List of modes" (symbol :tag "Major mode"))))

(defun speedbar-extension-list-to-regex (extlist)
  "Takes EXTLIST, a list of extensions and transforms it into regexp.
All the preceding `.' are stripped for an optimized expression starting
with `.' followed by extensions, followed by full-filenames."
  (let ((regex1 nil) (regex2 nil))
    (while extlist
      (if (= (string-to-char (car extlist)) ?.)
	  (setq regex1 (concat regex1 (if regex1 "\\|" "")
			       (substring (car extlist) 1)))
	(setq regex2 (concat regex2 (if regex2 "\\|" "") (car extlist))))
      (setq extlist (cdr extlist)))
    ;; Concatenate all the subexpressions together, making sure all types
    ;; of parts exist during concatenation.
    (concat "\\("
	    (if regex1 (concat "\\(\\.\\(" regex1 "\\)\\)") "")
	    (if (and regex1 regex2) "\\|" "")
	    (if regex2 (concat "\\(" regex2 "\\)") "")
	    "\\)$")))

(defvar speedbar-ignored-directory-regexp nil
  "Regular expression matching directories speedbar will not switch to.
Created from `speedbar-ignored-directory-expressions' with the function
`speedbar-extension-list-to-regex' (a misnamed function in this case.)
Use the function `speedbar-add-ignored-directory-regexp', or customize the
variable `speedbar-ignored-directory-expressions' to modify this variable.")

(defcustom speedbar-ignored-directory-expressions
  '("[/\\]logs?[/\\]\\'")
  "List of regular expressions matching directories speedbar will ignore.
They should included directories which are notoriously very large
and take a long time to load in.  Use the function
`speedbar-add-ignored-directory-regexp' to add new items to this list after
speedbar is loaded.  You may place anything you like in this list
before speedbar has been loaded."
  :group 'speedbar
  :type '(repeat (regexp :tag "Directory Regexp"))
  :set (lambda (sym val)
	 (set sym val)
         (setq speedbar-ignored-directory-regexp
	       (speedbar-extension-list-to-regex val))))

(defcustom speedbar-directory-unshown-regexp "^\\(\\..*\\)\\'"
  "Regular expression matching directories not to show in speedbar.
They should include commonly existing directories which are not
useful.  It is no longer necessary to include version-control
directories here; see `vc-directory-exclusion-list'."
  :group 'speedbar
  :type 'regexp)

(defcustom speedbar-file-unshown-regexp
  (let ((nstr "") (noext completion-ignored-extensions))
    (while noext
      (setq nstr (concat nstr (regexp-quote (car noext)) "\\'"
			 (if (cdr noext) "\\|" ""))
	    noext (cdr noext)))
    ;;               backup      refdir      lockfile
    (concat nstr "\\|#[^#]+#$\\|\\.\\.?\\'\\|\\.#"))
  "Regexp matching files we don't want displayed in a speedbar buffer.
It is generated from the variable `completion-ignored-extensions'."
  :group 'speedbar
  :type 'regexp)

(defvar speedbar-file-regexp nil
  "Regular expression matching files we know how to expand.
Created from `speedbar-supported-extension-expressions' with the
function `speedbar-extension-list-to-regex'.")

;; this is dangerous to customize, because the defaults will probably
;; change in the future.
(defcustom speedbar-supported-extension-expressions
  (append '(".[ch]\\(\\+\\+\\|pp\\|c\\|h\\|xx\\)?" ".tex\\(i\\(nfo\\)?\\)?"
	    ".el" ".emacs" ".l" ".lsp" ".p" ".java" ".js" ".f\\(90\\|77\\|or\\)?")
	  (if speedbar-use-imenu-flag
	      '(".ad[abs]" ".p[lm]" ".tcl" ".m" ".scm" ".pm" ".py" ".g" ".lua"
		;; html is not supported by default, but an imenu tags package
		;; is available.  Also, html files are nice to be able to see.
		".s?html"
		".ma?k" "[Mm]akefile\\(\\.in\\)?")))
  "List of regular expressions which will match files supported by tagging.
Do not prefix the `.' char with a double \\ to quote it, as the period
will be stripped by a simplified optimizer when compiled into a
singular expression.  This variable will be turned into
`speedbar-file-regexp' for use with speedbar.  You should use the
function `speedbar-add-supported-extension' to add a new extension at
runtime, or use the configuration dialog to set it in your init file.
If you add an extension to this list, and it does not appear, you may
need to also modify `completion-ignored-extensions' which will also help
file completion."
  :group 'speedbar
  :type '(repeat (regexp :tag "Extension Regexp"))
  :set (lambda (sym val)
	 (set sym val)
	 (setq speedbar-file-regexp (speedbar-extension-list-to-regex val))))

(setq speedbar-file-regexp
      (speedbar-extension-list-to-regex speedbar-supported-extension-expressions))

(defun speedbar-add-supported-extension (extension)
  "Add EXTENSION as a new supported extension for speedbar tagging.
This should start with a `.' if it is not a complete file name, and
the dot should NOT be quoted in with \\.  Other regular expression
matchers are allowed however.  EXTENSION may be a single string or a
list of strings."
  (interactive "sExtension: ")
  (setq extension (ensure-list extension))
  (while extension
    (if (member (car extension) speedbar-supported-extension-expressions)
	nil
      (setq speedbar-supported-extension-expressions
	    (cons (car extension) speedbar-supported-extension-expressions)))
    (setq extension (cdr extension)))
  (setq speedbar-file-regexp (speedbar-extension-list-to-regex
			      speedbar-supported-extension-expressions)))

(defun speedbar-add-ignored-directory-regexp (directory-expression)
  "Add DIRECTORY-EXPRESSION as a new ignored directory for speedbar tracking.
This function will modify `speedbar-ignored-directory-regexp' and add
DIRECTORY-EXPRESSION to `speedbar-ignored-directory-expressions'."
  (interactive "sDirectory regex: ")
  (setq directory-expression (ensure-list directory-expression))
  (while directory-expression
    (if (member (car directory-expression) speedbar-ignored-directory-expressions)
	nil
      (setq speedbar-ignored-directory-expressions
	    (cons (car directory-expression) speedbar-ignored-directory-expressions)))
    (setq directory-expression (cdr directory-expression)))
  (setq speedbar-ignored-directory-regexp (speedbar-extension-list-to-regex
				      speedbar-ignored-directory-expressions)))

(defcustom speedbar-update-flag dframe-have-timer-flag
  "Non-nil means to automatically update the display.
When this is nil then speedbar will not follow the attached frame's directory.
If you want to change this while speedbar is active, either use
\\[customize] or call \\<speedbar-mode-map> `\\[speedbar-toggle-updates]'."
  :group 'speedbar
  :initialize 'custom-initialize-default
  :set (lambda (sym val)
	 (set sym val)
	 (speedbar-toggle-updates))
  :type 'boolean)

(defvar speedbar-update-flag-disable nil
  "Permanently disable changing of the update flag.")

(defvar speedbar-mode-syntax-table
  (let ((st (make-syntax-table)))
    ;; Turn off paren matching around here.
    (modify-syntax-entry ?\' " " st)
    (modify-syntax-entry ?\" " " st)
    (modify-syntax-entry ?\( " " st)
    (modify-syntax-entry ?\) " " st)
    (modify-syntax-entry ?\{ " " st)
    (modify-syntax-entry ?\} " " st)
    (modify-syntax-entry ?\[ " " st)
    (modify-syntax-entry ?\]  " " st)
    st)
  "Syntax-table used on the speedbar.")

(defvar speedbar-mode-map
  (let ((map (make-keymap)))
    (suppress-keymap map t)

    ;; Control.
    (define-key map "t" 'speedbar-toggle-updates)
    (define-key map "g" 'speedbar-refresh)

    ;; Navigation.
    (define-key map "n" 'speedbar-next)
    (define-key map "p" 'speedbar-prev)
    (define-key map "\M-n" 'speedbar-restricted-next)
    (define-key map "\M-p" 'speedbar-restricted-prev)
    (define-key map "\C-\M-n" 'speedbar-forward-list)
    (define-key map "\C-\M-p" 'speedbar-backward-list)
    ;; These commands never seemed useful.
    ;;  (define-key map " " 'speedbar-scroll-up)
    ;;  (define-key map [delete] 'speedbar-scroll-down)

    ;; Short cuts I happen to find useful.
    (define-key map "r"
      (lambda () (interactive)
        (speedbar-change-initial-expansion-list
         speedbar-previously-used-expansion-list-name)))
    (define-key map "b"
      (lambda () (interactive)
        (speedbar-change-initial-expansion-list "quick buffers")))
    (define-key map "f"
      (lambda () (interactive)
        (speedbar-change-initial-expansion-list "files")))

    (dframe-update-keymap map)
    map)
  "Keymap used in speedbar buffer.")

(defun speedbar-make-specialized-keymap ()
  "Create a keymap for use with a speedbar major or minor display mode.
This basically creates a sparse keymap, and makes its parent be
`speedbar-mode-map'."
  (let ((k (make-sparse-keymap)))
    (set-keymap-parent k speedbar-mode-map)
    k))

(defvar speedbar-file-key-map
  (let ((map (speedbar-make-specialized-keymap)))

    ;; Basic tree features.
    (define-key map "e" 'speedbar-edit-line)
    (define-key map "\C-m" 'speedbar-edit-line)
    (define-key map "+" 'speedbar-expand-line)
    (define-key map "=" 'speedbar-expand-line)
    (define-key map "-" 'speedbar-contract-line)

    (define-key map "[" 'speedbar-expand-line-descendants)
    (define-key map "]" 'speedbar-contract-line-descendants)

    (define-key map " " 'speedbar-toggle-line-expansion)

    ;; File based commands.
    (define-key map "U" 'speedbar-up-directory)
    (define-key map "I" 'speedbar-item-info)
    (define-key map "B" 'speedbar-item-byte-compile)
    (define-key map "L" 'speedbar-item-load)
    (define-key map "C" 'speedbar-item-copy)
    (define-key map "D" 'speedbar-item-delete)
    (define-key map "O" 'speedbar-item-object-delete)
    (define-key map "R" 'speedbar-item-rename)
    (define-key map "M" 'speedbar-create-directory)
    map)
  "Keymap used in speedbar buffer while files are displayed.")

(defvar speedbar-easymenu-definition-base
  (append
   '("Speedbar"
     ["Update" speedbar-refresh t]
     ["Auto Update" speedbar-toggle-updates
      :active (not speedbar-update-flag-disable)
      :style toggle :selected speedbar-update-flag])
   (when (and (fboundp 'defimage) (display-graphic-p))
     (list
      ["Use Images" speedbar-toggle-images
       :style toggle :selected speedbar-use-images])))
  "Base part of the speedbar menu.")

(defvar speedbar-easymenu-definition-special
  '(["Edit Item On Line" speedbar-edit-line t]
    ["Show All Files" speedbar-toggle-show-all-files
     :style toggle :selected speedbar-show-unknown-files]
    ["Expand File Tags" speedbar-expand-line
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.\\+. "))]
    ["Flush Cache & Expand" speedbar-flush-expand-line
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.\\+. "))]
    ["Expand All Descendants" speedbar-expand-line-descendants
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.\\+. ")) ]
    ["Contract File Tags" speedbar-contract-line
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.-. "))]
;    ["Sort Tags" speedbar-toggle-sorting
;     :style toggle :selected speedbar-sort-tags]
    "----"
    ["File/Tag Information" speedbar-item-info t]
    ["Load Lisp File" speedbar-item-load
     (save-excursion
       (beginning-of-line)
       (looking-at "[0-9]+: *\\[[+-]\\] .+\\(\\.el\\)\\( \\|$\\)"))]
    ["Byte Compile File" speedbar-item-byte-compile
     (save-excursion
       (beginning-of-line)
       (looking-at "[0-9]+: *\\[[+-]\\] .+\\(\\.el\\)\\( \\|$\\)"))]
    ["Copy File" speedbar-item-copy
     (save-excursion (beginning-of-line) (looking-at "[0-9]+: *\\["))]
    ["Rename File" speedbar-item-rename
     (save-excursion (beginning-of-line) (looking-at "[0-9]+: *[[<]"))]
    ["Create Directory" speedbar-create-directory
     (save-excursion (beginning-of-line) (looking-at "[0-9]+: *[[<]"))]
    ["Delete File" speedbar-item-delete
     (save-excursion (beginning-of-line) (looking-at "[0-9]+: *[[<]"))]
    ["Delete Object" speedbar-item-object-delete
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *\\[[+-]\\] [^ \n]+ \\*?[!#]$"))]
    )
  "Additional menu items while in file-mode.")

(defvar speedbar-easymenu-definition-trailer
  '(["Customize..." speedbar-customize t]
    ["Close" dframe-close-frame t]
    ["Quit" delete-frame t])
  "Menu items appearing at the end of the speedbar menu.")

(defvar speedbar-desired-buffer nil
  "Non-nil when speedbar is showing buttons specific to a special mode.
In this case it is the originating buffer.")
(defvar speedbar-buffer nil
  "The buffer displaying the speedbar.")
(defvar speedbar-frame nil
  "The frame displaying speedbar.")
(defvar speedbar-cached-frame nil
  "The frame that was last created, then removed from the display.")
(defvar speedbar-full-text-cache nil
  "The last open directory is saved in its entirety for ultra-fast switching.")

(defvar speedbar-last-selected-file nil
  "The last file which was selected in speedbar buffer.")

(defvar speedbar-shown-directories nil
  "Maintain list of directories simultaneously open in the current speedbar.")

(defvar speedbar-directory-contents-alist nil
  "An association list of directories and their contents.
Each sublist was returned by `speedbar-file-lists'.  This list is
maintained to speed up the refresh rate when switching between
directories.")

(defvar speedbar-power-click nil
  "Never set this by hand.  Value is t when S-mouse activity occurs.")

(define-obsolete-function-alias 'speedbar-make-overlay
  'make-overlay "27.1")
(define-obsolete-function-alias 'speedbar-overlay-put
  'overlay-put "27.1")
(define-obsolete-function-alias 'speedbar-delete-overlay
  'delete-overlay "27.1")
(define-obsolete-function-alias 'speedbar-mode-line-update
  'force-mode-line-update "27.1")

\f
;;; Mode definitions/ user commands
;;

;;;###autoload
(defalias 'speedbar 'speedbar-frame-mode)
;;;###autoload
(defun speedbar-frame-mode (&optional arg)
  "Enable or disable speedbar.  Positive ARG means turn on, negative turn off.
A nil ARG means toggle.  Once the speedbar frame is activated, a buffer in
`speedbar-mode' will be displayed.  Currently, only one speedbar is
supported at a time.
`speedbar-before-popup-hook' is called before popping up the speedbar frame.
`speedbar-before-delete-hook' is called before the frame is deleted."
  (interactive "P")
  ;; Get the buffer to play with
  (if (not (buffer-live-p speedbar-buffer))
      (with-current-buffer
          (setq speedbar-buffer (get-buffer-create " SPEEDBAR"))
	(speedbar-mode)))
  ;; Do the frame thing
  (dframe-frame-mode arg
		     'speedbar-frame
		     'speedbar-cached-frame
		     'speedbar-buffer
		     "Speedbar"
		     #'speedbar-frame-mode
		     speedbar-frame-parameters
		     'speedbar-before-delete-hook
		     'speedbar-before-popup-hook
		     'speedbar-after-create-hook)
  ;; Start up the timer
  (if (not speedbar-frame)
      (speedbar-set-timer nil)
    (speedbar-reconfigure-keymaps)
    (speedbar-update-contents)
    (speedbar-set-timer dframe-update-speed)
    )
  ;; Frame modifications
  (setq-local dframe-delete-frame-function 'speedbar-handle-delete-frame)
  ;; hscroll
  (setq-local auto-hscroll-mode nil)
  ;; reset the selection variable
  (setq speedbar-last-selected-file nil)
  (unless (display-graphic-p)
    (message (substitute-command-keys
              "Use \\[speedbar-get-focus] to see the speedbar window"))))

(defun speedbar-frame-reposition-smartly ()
  "Reposition the speedbar frame to be next to the attached frame."
  (cond ((or (assoc 'left speedbar-frame-parameters)
             (assoc 'top speedbar-frame-parameters))
	 ;; if left/top were specified in the parameters, pass them
	 ;; down to the reposition function
	 (dframe-reposition-frame
	  speedbar-frame
	  (dframe-attached-frame speedbar-frame)
	  (cons (cdr (assoc 'left speedbar-frame-parameters))
		(cdr (assoc 'top  speedbar-frame-parameters))))
	 )
	(t
	 (dframe-reposition-frame speedbar-frame
				  (dframe-attached-frame speedbar-frame)
				  speedbar-default-position))))

(defsubst speedbar-current-frame ()
  "Return the frame to use for speedbar based on current context."
  (dframe-current-frame 'speedbar-frame 'speedbar-mode))

(defun speedbar-handle-delete-frame (e)
  "Handle a delete frame event E.
If the deleted frame is the frame speedbar is attached to,
we need to delete speedbar also."
  (when (and speedbar-frame
	     (eq (car (car (cdr e))) ;; frame to be deleted
		 dframe-attached-frame))
    (delete-frame speedbar-frame)))

;;;###autoload
(defun speedbar-get-focus ()
  "Change frame focus to or from the speedbar frame.
If the selected frame is not speedbar, then speedbar frame is
selected.  If the speedbar frame is active, then select the attached frame."
  (interactive)
  (speedbar-reset-scanners)
  (dframe-get-focus 'speedbar-frame 'speedbar-frame-mode)
  (let ((speedbar-update-flag t))
    (speedbar-timer-fn)))

(defsubst speedbar-frame-width ()
  "Return the width of the speedbar frame in characters.
Return nil if it doesn't exist."
  (frame-width speedbar-frame))

(define-derived-mode speedbar-mode fundamental-mode "Speedbar"
  "Major mode for managing a display of directories and tags.
\\<speedbar-mode-map>
The first line represents the default directory of the speedbar frame.
Each directory segment is a button which jumps speedbar's default
directory to that directory.  Buttons are activated by clicking `\\[speedbar-click]'.
In some situations using `\\[dframe-power-click]' is a `power click' which will
rescan cached items, or pop up new frames.

Each line starting with <+> represents a directory.  Click on the <+>
to insert the directory listing into the current tree.  Click on the
<-> to retract that list.  Click on the directory name to go to that
directory as the default.

Each line starting with [+] is a file.  If the variable
`speedbar-show-unknown-files' is t, the lines starting with [?] are
files which don't have imenu support, but are not expressly ignored.
Files are completely ignored if they match `speedbar-file-unshown-regexp'
which is generated from `completion-ignored-extensions'.

Files with a `*' character after their name are files checked out of a
version control system.  (Currently only RCS is supported.)  New
version control systems can be added by examining the documentation
for `speedbar-this-file-in-vc' and `speedbar-vc-check-dir-p'.

Files with a `#' or `!' character after them are source files that
have an object file associated with them.  The `!' indicates that the
files is out of date.  You can control what source/object associations
exist through the variable `speedbar-obj-alist'.

Click on the [+] to display a list of tags from that file.  Click on
the [-] to retract the list.  Click on the file name to edit the file
in the attached frame.

If you open tags, you might find a node starting with {+}, which is a
category of tags.  Click the {+} to expand the category.  Jump-able
tags start with >.  Click the name of the tag to go to that position
in the selected file.

\\{speedbar-mode-map}"
  (save-excursion
    (setq font-lock-keywords nil) ;; no font-locking please
    (setq truncate-lines t)
    (setq-local frame-title-format "Speedbar")
    (setq case-fold-search nil
	  buffer-read-only t)
    (speedbar-set-mode-line-format)
    ;; Add in our dframe hooks.
    (if speedbar-track-mouse-flag
	(setq dframe-track-mouse-function #'speedbar-track-mouse))
    (setq dframe-help-echo-function #'speedbar-item-info
	  dframe-mouse-click-function #'speedbar-click
	  dframe-mouse-position-function #'speedbar-position-cursor-on-line)
    (setq-local tab-bar-mode nil)
    (setq tab-line-exclude nil))
  speedbar-buffer)

(define-obsolete-function-alias 'speedbar-message 'dframe-message "24.4")

(defsubst speedbar-y-or-n-p (prompt &optional deleting)
  "Like `y-or-n-p', but for use in the speedbar frame.
Argument PROMPT is the prompt to use.
Optional argument DELETING means this is a query that will delete something.
The variable `speedbar-query-confirmation-method' can cause this to
return true without a query."
  (or (and (not deleting)
	   (eq speedbar-query-confirmation-method 'none-but-delete))
      (dframe-y-or-n-p prompt)))

(defsubst speedbar-select-attached-frame ()
  "Select the frame attached to this speedbar."
  (dframe-select-attached-frame (speedbar-current-frame)))

;; Backwards compatibility
(define-obsolete-function-alias 'speedbar-with-attached-buffer
  'dframe-with-attached-buffer "24.4") ; macro
(define-obsolete-function-alias 'speedbar-maybee-jump-to-attached-frame
  'dframe-maybee-jump-to-attached-frame "24.4")

(defun speedbar-set-mode-line-format ()
  "Set the format of the mode line based on the current speedbar environment.
This gives visual indications of what is up.  It EXPECTS the speedbar
frame and window to be the currently active frame and window."
  (if (and (frame-live-p (speedbar-current-frame))
	   speedbar-buffer)
      (with-current-buffer speedbar-buffer
	(let* ((w (or (speedbar-frame-width) 20))
	       (p1 "<<")
	       (p5 ">>")
	       (p3 (if speedbar-update-flag "#" "!"))
	       (p35 (capitalize speedbar-initial-expansion-list-name))
	       (blank (- w (length p1) (length p3) (length p5) (length p35)
			 (if line-number-mode 5 1)))
	       (p2 (if (> blank 0)
		       (make-string (/ blank 2) ? )
		     ""))
	       (p4 (if (> blank 0)
		       (make-string (+ (/ blank 2) (% blank 2)) ? )
		     ""))
	       (tf
		(if line-number-mode
		    (list (concat p1 p2 p3 " " p35) '(line-number-mode " %3l")
			  (concat p4 p5))
		  (list (concat p1 p2 p3 p4 p5)))))
	  (if (not (equal mode-line-format tf))
	      (progn
		(setq mode-line-format tf)
		(force-mode-line-update)))))))

(defvar speedbar-previous-menu nil
  "The menu before the last `speedbar-reconfigure-keymaps' was called.")
(make-obsolete-variable 'speedbar-previous-menu "no longer used." "28.1")

(defun speedbar-reconfigure-keymaps ()
  "Reconfigure the menu-bar in a speedbar frame.
Different menu items are displayed depending on the current display mode
and the existence of packages."
  (let ((md (append
	     speedbar-easymenu-definition-base
	     (if speedbar-shown-directories
		 ;; file display mode version
		 (speedbar-initial-menu)
	       (save-excursion
		 (dframe-select-attached-frame speedbar-frame)
		  (eval (nth 1 (assoc speedbar-initial-expansion-list-name
				speedbar-initial-expansion-mode-alist)))))
	     ;; Dynamic menu stuff
	     '("-")
	    (list (cons "Displays"
			(let ((displays nil)
			      (alist speedbar-initial-expansion-mode-alist))
			  (while alist
			    (setq displays
				  (cons
				   (vector
				    (capitalize (car (car alist)))
				    (list
				     'speedbar-change-initial-expansion-list
				     (car (car alist)))
				    :style 'radio
				    :selected
				    `(string= ,(car (car alist))
					 speedbar-initial-expansion-list-name)
				    )
				   displays))
			    (setq alist (cdr alist)))
			  displays)))
	    ;; The trailer
	    speedbar-easymenu-definition-trailer))
	(localmap (save-excursion
		    (let ((cf (selected-frame)))
		      (prog2
			  (dframe-select-attached-frame speedbar-frame)
			  (if (local-variable-p
			       'speedbar-special-mode-key-map
			       (current-buffer))
			      speedbar-special-mode-key-map)
			(select-frame cf))))))
    (with-current-buffer speedbar-buffer
      (use-local-map (or localmap
			 (speedbar-initial-keymap)
			 ;; This creates a small keymap we can glom the
			 ;; menu adjustments into.
                         (speedbar-make-specialized-keymap)))
      ;; Now add the new menu
      (easy-menu-define speedbar-menu-map (current-local-map)
        "Speedbar menu" md))

    (run-hooks 'speedbar-reconfigure-keymaps-hook)))

\f
;;; User Input stuff
;;
(defun speedbar-customize ()
  "Customize speedbar using the Custom package."
  (interactive)
  (let ((sf (selected-frame)))
    (dframe-select-attached-frame speedbar-frame)
    (customize-group 'speedbar)
    (select-frame sf))
  (dframe-maybee-jump-to-attached-frame))

(defun speedbar-track-mouse (event)
  "For motion EVENT, display info about the current line."
  (if (not speedbar-track-mouse-flag)
      nil
    (save-excursion
      (save-window-excursion
	(condition-case nil
	    (progn
	      (mouse-set-point event)
	      (if (eq major-mode 'speedbar-mode)
		  ;; XEmacs may let us get in here in other mode buffers.
		  (speedbar-item-info)))
	  (error (dframe-message nil)))))))

(defun speedbar-show-info-under-mouse ()
  "Call the info function for the line under the mouse."
  (let ((pos (mouse-position)))	; we ignore event until I use it later.
    (if (equal (car pos) speedbar-frame)
	(save-excursion
	  (save-window-excursion
	    (apply 'set-mouse-position pos)
	    (speedbar-item-info))))))

(defun speedbar-next (arg)
  "Move to the next ARGth line in a speedbar buffer."
  (interactive "p")
  (forward-line (or arg 1))
  (speedbar-item-info)
  (speedbar-position-cursor-on-line))

(defun speedbar-prev (arg)
  "Move to the previous ARGth line in a speedbar buffer."
  (interactive "p")
  (speedbar-next (if arg (- arg) -1)))

(defun speedbar-restricted-move (arg)
  "Move to the next ARGth line in a speedbar buffer at the same depth.
This means that movement is restricted to a subnode, and that siblings
of intermediate nodes are skipped."
  (if (not (numberp arg)) (signal 'wrong-type-argument (list 'numberp arg)))
  ;; First find the extent for which we are allowed to move.
  (let ((depth (save-excursion (beginning-of-line)
			       (if (looking-at "[0-9]+:")
				   (string-to-number (match-string 0))
				 0)))
	(crement (if (< arg 0) 1 -1))	; decrement or increment
	(lastmatch (point)))
    (while (/= arg 0)
      (forward-line (- crement))
      (let ((subdepth (save-excursion (beginning-of-line)
				      (if (looking-at "[0-9]+:")
					  (string-to-number (match-string 0))
					0))))
	(cond ((or (< subdepth depth)
		   (progn (end-of-line) (eobp))
		   (progn (beginning-of-line) (bobp)))
	       ;; We have reached the end of this block.
	       (goto-char lastmatch)
	       (setq arg 0)
	       (error "End of sub-list"))
	      ((= subdepth depth)
	       (setq lastmatch (point)
		     arg (+ arg crement))))))
    (speedbar-position-cursor-on-line)))

(defun speedbar-restricted-next (arg)
  "Move to the next ARGth line in a speedbar buffer at the same depth.
This means that movement is restricted to a subnode, and that siblings
of intermediate nodes are skipped."
  (interactive "p")
  (speedbar-restricted-move (or arg 1))
  (speedbar-item-info))

(defun speedbar-restricted-prev (arg)
  "Move to the previous ARGth line in a speedbar buffer at the same depth.
This means that movement is restricted to a subnode, and that siblings
of intermediate nodes are skipped."
  (interactive "p")
  (speedbar-restricted-move (if arg (- arg) -1))
  (speedbar-item-info))

(defun speedbar-navigate-list (arg)
  "Move across ARG groups of similarly typed items in speedbar.
Stop on the first line of the next type of item, or on the last or first item
if we reach a buffer boundary."
  (interactive "p")
  (beginning-of-line)
  (if (looking-at "[0-9]+: *[[<{][-+?][]>}] ")
      (let ((str (regexp-quote (match-string 0))))
	(while (looking-at str)
	  (speedbar-restricted-move arg)
	  (beginning-of-line))))
  (speedbar-position-cursor-on-line))

(defun speedbar-forward-list ()
  "Move forward over the current list.
A LIST in speedbar is a group of similarly typed items, such as directories,
files, or the directory button."
  (interactive)
  (speedbar-navigate-list 1)
  (speedbar-item-info))

(defun speedbar-backward-list ()
  "Move backward over the current list.
A LIST in speedbar is a group of similarly typed items, such as directories,
files, or the directory button."
  (interactive)
  (speedbar-navigate-list -1)
  (speedbar-item-info))

(defun speedbar-scroll-up (&optional arg)
  "Page down one screen-full of the speedbar, or ARG lines."
  (interactive "P")
  (scroll-up arg)
  (speedbar-position-cursor-on-line))

(defun speedbar-scroll-down (&optional arg)
  "Page up one screen-full of the speedbar, or ARG lines."
  (interactive "P")
  (scroll-down arg)
  (speedbar-position-cursor-on-line))

(defun speedbar-up-directory ()
  "Keyboard accelerator for moving the default directory up one.
Assumes that the current buffer is the speedbar buffer."
  (interactive)
  (setq default-directory (expand-file-name (concat default-directory "../")))
  (speedbar-update-contents))
\f
;;; Speedbar file activity (aka creeping featurism)
;;
(defun speedbar-refresh (&optional arg)
  "Refresh the current speedbar display, disposing of any cached data.
Argument ARG represents to force a refresh past any caches that may exist."
  (interactive "P")
  (let ((dl speedbar-shown-directories)
	(dframe-power-click arg)
	deactivate-mark)
    ;; We need to hack something so this works in detached frames.
    (dolist (d dl)
      (setq speedbar-directory-contents-alist
            (delq (assoc d speedbar-directory-contents-alist)
                  speedbar-directory-contents-alist)))
    (if (<= 1 speedbar-verbosity-level)
	(dframe-message "Refreshing speedbar..."))
    (speedbar-update-contents)
    (speedbar-stealthy-updates)
    ;; Reset the timer in case it got really hosed for some reason...
    (speedbar-set-timer dframe-update-speed)
    (if (<= 1 speedbar-verbosity-level)
	(dframe-message "Refreshing speedbar...done"))))

(defun speedbar-item-load ()
  "Load the item under the cursor or mouse if it is a Lisp file."
  (interactive)
  (let ((f (speedbar-line-file)))
    (if (and (file-exists-p f) (string-match "\\.el\\'" f))
	(if (and (file-exists-p (concat f "c"))
		 (speedbar-y-or-n-p (format "Load %sc? " f)))
	    ;; If the compiled version exists, load that instead...
	    (load-file (concat f "c"))
	  (load-file f))
      (error "Not a loadable file"))))

(defun speedbar-item-byte-compile ()
  "Byte compile the item under the cursor or mouse if it is a Lisp file."
  (interactive)
  (let ((f (speedbar-line-file))
	(sf (selected-frame)))
    (if (and (file-exists-p f) (string-match "\\.el\\'" f))
	(progn
	  (dframe-select-attached-frame speedbar-frame)
          (byte-compile-file f)
	  (select-frame sf)
	  (speedbar-reset-scanners)))
    ))

(defun speedbar-mouse-item-info (event)
  "Provide information about what the user clicked on.
This should be bound to a mouse EVENT."
  (interactive "e")
  (mouse-set-point event)
  (speedbar-item-info))

(defun speedbar-generic-item-info ()
  "Attempt to derive, and then display information about this line item.
File style information is displayed with `speedbar-item-info'."
  (save-excursion
    (beginning-of-line)
    ;; Skip invisible number info.
    (if (looking-at "\\([0-9]+\\):") (goto-char (match-end 0)))
    ;; Skip items in "folder" type text characters.
    (if (looking-at "\\s-*[[<({].[]>)}] ") (goto-char (match-end 0)))
    ;; Get the text
    (dframe-message "Text: %s" (buffer-substring-no-properties
				  (point) (line-end-position)))))

(defun speedbar-item-info ()
  "Display info in the minibuffer about the button the mouse is over.
This function can be replaced in `speedbar-mode-functions-list' as
`speedbar-item-info'."
  (interactive)
  (let (message-log-max)
    (funcall (or (speedbar-fetch-replacement-function 'speedbar-item-info)
		 'speedbar-generic-item-info))))

(defun speedbar-item-info-file-helper (&optional filename)
  "Display info about a file that is on the current line.
Return nil if not applicable.  If FILENAME, then use that
instead of reading it from the speedbar buffer."
  (let* ((item (or filename (speedbar-line-file)))
	 (attr (if item (file-attributes item) nil)))
    (if (and item attr)
	(dframe-message "%s %-6d %s"
			(file-attribute-modes attr)
			(file-attribute-size attr) item))))

(defun speedbar-item-info-tag-helper ()
  "Display info about a tag that is on the current line.
Return nil if not applicable."
  (save-excursion
    (beginning-of-line)
    (cond
     ((re-search-forward " [-+=]?> \\([^\n]+\\)" (line-end-position) t)
      (let* ((tag (match-string 1))
             (attr (speedbar-line-token))
             (item nil)
             (semantic-tagged (if (fboundp 'semantic-tag-p)
                                  (semantic-tag-p attr))))
        (if semantic-tagged
            (with-no-warnings
              (save-excursion
                (when (and (semantic-tag-overlay attr)
                           (semantic-tag-buffer attr))
                  (set-buffer (semantic-tag-buffer attr)))
                (dframe-message
                 (funcall semantic-sb-info-format-tag-function attr)
                 )))
          (looking-at "\\([0-9]+\\):")
          (setq item (file-name-nondirectory (speedbar-line-directory)))
          (dframe-message "Tag: %s  in %s" tag item))))
     ((re-search-forward "{[+-]} \\([^\n]+\\)$" (line-end-position) t)
      (dframe-message "Group of tags \"%s\"" (match-string 1)))
     ((re-search-forward " [+-]?[()|@] \\([^\n]+\\)$" nil t)
      (let* ((detailtext (match-string 1))
             (detail (or (speedbar-line-token) detailtext))
             (parent (save-excursion
                       (beginning-of-line)
                       (let ((dep (if (looking-at "[0-9]+:")
                                      (1- (string-to-number (match-string 0)))
                                    0)))
                         (re-search-backward (concat "^"
                                                     (int-to-string dep)
                                                     ":")
                                             nil t))
                       (if (looking-at "[0-9]+: +[-+=>]> \\([^\n]+\\)$")
                           (speedbar-line-token)
                         nil))))
        (cond
         ((featurep 'semantic)
          (with-no-warnings
            (if (semantic-tag-p detail)
                (dframe-message
                 (funcall semantic-sb-info-format-tag-function detail parent))
              (if parent
                  (dframe-message "Detail: %s of tag %s" detail
                                  (if (semantic-tag-p parent)
                                      (semantic-format-tag-name parent nil t)
                                    parent))
                (dframe-message "Detail: %s" detail)))))
         ;; Not using `semantic':
         (parent
          (dframe-message "Detail: %s of tag %s" detail parent))
         (t
          (dframe-message "Detail: %s" detail))))))))

(defun speedbar-files-item-info ()
  "Display info in the minibuffer about the button the mouse is over."
  (if (not speedbar-shown-directories)
      (speedbar-generic-item-info)
    (or (speedbar-item-info-file-helper)
	(speedbar-item-info-tag-helper)
	(speedbar-generic-item-info))))

(defun speedbar-item-copy ()
  "Copy the item under the cursor.
Files can be copied to new names or places."
  (interactive)
  (let ((f (speedbar-line-file)))
    (if (not f)	(error "Not a file"))
    (if (file-directory-p f)
	(error "Cannot copy directory")
      (let* ((rt (read-file-name (format "Copy %s to: "
					 (file-name-nondirectory f))
				 (file-name-directory f)))
	     (refresh (member (expand-file-name (file-name-directory rt))
			      speedbar-shown-directories)))
	;; Create the right file name part
	(if (file-directory-p rt)
	    (setq rt
		  (concat (expand-file-name rt)
			  (if (string-match "[/\\]$" rt) "" "/")
			  (file-name-nondirectory f))))
	(if (or (not (file-exists-p rt))
		(speedbar-y-or-n-p (format "Overwrite %s with %s? " rt f)
				   t))
	    (progn
	      (copy-file f rt t t)
	      ;; refresh display if the new place is currently displayed.
	      (if refresh
		  (progn
		    (speedbar-refresh)
		    (if (not (speedbar-goto-this-file rt))
			(speedbar-goto-this-file f))))
	      ))))))

(defun speedbar-item-rename ()
  "Rename the item under the cursor or mouse.
Files can be renamed to new names or moved to new directories."
  (interactive)
  (let ((f (speedbar-line-file)))
    (if f
	(let* ((rt (read-file-name (format "Rename %s to: "
					   (file-name-nondirectory f))
				   (file-name-directory f)))
	       (refresh (member (expand-file-name (file-name-directory rt))
				speedbar-shown-directories)))
	  ;; Create the right file name part
	  (if (file-directory-p rt)
	      (setq rt
		    (concat (expand-file-name rt)
			    (if (string-match "[/\\]\\'" rt) "" "/")
			    (file-name-nondirectory f))))
	  (if (or (not (file-exists-p rt))
		  (speedbar-y-or-n-p (format "Overwrite %s with %s? " rt f)
				     t))
	      (progn
		(rename-file f rt t)
		;; refresh display if the new place is currently displayed.
		(if refresh
		    (progn
		      (speedbar-refresh)
		      (speedbar-goto-this-file rt)
		      )))))
      (error "Not a file"))))

(defun speedbar-create-directory ()
  "Create a directory in speedbar."
  (interactive)
  (let ((f (speedbar-line-file)))
    (if f
	(let* ((basedir (file-name-directory f))
	       (nd (read-directory-name "Create directory: "
				   basedir)))
	  ;; Make the directory
	  (make-directory nd t)
	  (speedbar-refresh)
	  (speedbar-goto-this-file nd)
	  )
      (error "Not a file"))))

(defun speedbar-item-delete ()
  "Delete the item under the cursor.  Files are removed from disk."
  (interactive)
  (let ((f (speedbar-line-file)))
    (if (not f) (error "Not a file"))
    (if (speedbar-y-or-n-p (format "Delete %s? " f) t)
	(progn
	  (if (file-directory-p f)
	      (delete-directory f t t)
	    (delete-file f t))
	  (dframe-message "Okie dokie.")
	  (let ((p (point)))
	    (speedbar-refresh)
	    (goto-char p))
	  ))
    ))

(defun speedbar-item-object-delete ()
  "Delete the object associated from the item under the cursor.
The file is removed from disk.  The object is determined from the
variable `speedbar-obj-alist'."
  (interactive)
  (let* ((f (speedbar-line-file))
	 (obj nil)
	 (oa speedbar-obj-alist))
    (if (not f) (error "Not a file"))
    (while (and oa (not (string-match (car (car oa)) f)))
      (setq oa (cdr oa)))
    (setq obj (concat (file-name-sans-extension f) (cdr (car oa))))
    (if (and oa (file-exists-p obj)
	     (speedbar-y-or-n-p (format "Delete %s? " obj) t))
	(progn
	  (delete-file obj)
	  (speedbar-reset-scanners)))))

(defun speedbar-enable-update ()
  "Enable automatic updating in speedbar via timers."
  (interactive)
  (setq speedbar-update-flag t)
  (speedbar-set-mode-line-format)
  (speedbar-set-timer dframe-update-speed))

(defun speedbar-disable-update ()
  "Disable automatic updating and stop consuming resources."
  (interactive)
  (setq speedbar-update-flag nil)
  (speedbar-set-mode-line-format)
  (speedbar-set-timer nil))

(defun speedbar-toggle-updates ()
  "Toggle automatic update for the speedbar frame."
  (interactive)
  (if speedbar-update-flag
      (speedbar-disable-update)
    (speedbar-enable-update)))

(defun speedbar-toggle-images ()
  "Toggle use of images in the speedbar frame."
  (interactive)
  (setq speedbar-use-images (not speedbar-use-images))
  (speedbar-refresh))

(defun speedbar-toggle-sorting ()
  "Toggle tag sorting."
  (interactive)
  (setq speedbar-sort-tags (not speedbar-sort-tags)))

(defun speedbar-toggle-show-all-files ()
  "Toggle display of files speedbar can not tag."
  (interactive)
  (setq speedbar-show-unknown-files (not speedbar-show-unknown-files))
  (speedbar-refresh))

(defmacro speedbar-with-writable (&rest forms)
  "Allow the buffer to be writable and evaluate FORMS."
  (declare (indent 0) (debug t))
  `(let ((inhibit-read-only t))
     ,@forms))

(defun speedbar-insert-button (text face mouse function
				    &optional token prevline)
  "Insert TEXT as the next logical speedbar button.
FACE is the face to put on the button, MOUSE is the highlight face to use.
When the user clicks on TEXT, FUNCTION is called with the TOKEN parameter.
This function assumes that the current buffer is the speedbar buffer.
If PREVLINE, then put this button on the previous line.

This is a convenience function for special modes that create their own
specialized speedbar displays."
  (goto-char (point-max))
  (let ((start (point)))
    (if (/= (current-column) 0) (insert "\n"))
    (put-text-property start (point) 'invisible nil))
  (if prevline (progn (delete-char -1)
		      (insert " ") ;back up if desired...
		      (put-text-property (1- (point)) (point) 'invisible nil)))
  (let ((start (point)))
    (insert text)
    (speedbar-make-button start (point) face mouse function token))
  (let ((start (point)))
    (insert "\n")
    (add-text-properties
     start (point) '(face nil invisible nil mouse-face nil))))

(defun speedbar-insert-separator (text)
  "Insert a separation label of TEXT.
Separators are not active, have no labels, depth, or actions."
  (if speedbar-use-images
      (let ((start (point)))
	(insert "//")
	(speedbar-insert-image-button-maybe start 2)))
  (let ((start (point)))
    (insert text "\n")
    (speedbar-make-button start (point)
			  'speedbar-separator-face
			  nil nil nil)))

(defun speedbar-make-button (start end face mouse function &optional token)
  "Create a button from START to END, with FACE as the display face.
MOUSE is the mouse face.  When this button is clicked on FUNCTION
will be run with the TOKEN parameter (any Lisp object).  If FACE
is t use the text properties of the string that is passed as an
argument."
  (unless (eq face t)
    (put-text-property start end 'face face))
  (add-text-properties
   start end `(mouse-face ,mouse invisible nil
               speedbar-text ,(buffer-substring-no-properties start end)))
  (if speedbar-use-tool-tips-flag
      (put-text-property start end 'help-echo #'dframe-help-echo))
  (if function (put-text-property start end 'speedbar-function function))
  (if token (put-text-property start end 'speedbar-token token))
  ;; So far the only text we have is less than 3 chars.
  (if (<= (- end start) 3)
      (speedbar-insert-image-button-maybe start (- end start)))
  )
\f
;;; Initial Expansion list management
;;
(defun speedbar-initial-expansion-list ()
  "Return the current default expansion list.
This is based on `speedbar-initial-expansion-list-name' referencing
`speedbar-initial-expansion-mode-alist'."
  ;; cdr1 - name, cdr2 - menu
  (cdr (cdr (cdr (assoc speedbar-initial-expansion-list-name
			speedbar-initial-expansion-mode-alist)))))

(defun speedbar-initial-menu ()
  "Return the current default menu data.
This is based on `speedbar-initial-expansion-list-name' referencing
`speedbar-initial-expansion-mode-alist'."
  (symbol-value
   (car (cdr (assoc speedbar-initial-expansion-list-name
		    speedbar-initial-expansion-mode-alist)))))

(defun speedbar-initial-keymap ()
  "Return the current default menu data.
This is based on `speedbar-initial-expansion-list-name' referencing
`speedbar-initial-expansion-mode-alist'."
  (symbol-value
   (car (cdr (cdr (assoc speedbar-initial-expansion-list-name
			 speedbar-initial-expansion-mode-alist))))))

(defun speedbar-initial-stealthy-functions ()
  "Return a list of functions to call stealthily.
This is based on `speedbar-initial-expansion-list-name' referencing
`speedbar-stealthy-function-list'."
  (cdr (assoc speedbar-initial-expansion-list-name
	      speedbar-stealthy-function-list)))

(defun speedbar-add-expansion-list (new-list)
  "Add NEW-LIST to the list of expansion lists."
  (add-to-list 'speedbar-initial-expansion-mode-alist new-list))

(defun speedbar-change-initial-expansion-list (new-default)
  "Change speedbar's default expansion list to NEW-DEFAULT."
  (interactive
   (list
    (completing-read (format-prompt
                      "Speedbar Mode"
		      speedbar-previously-used-expansion-list-name)
		     speedbar-initial-expansion-mode-alist
		     nil t "" nil
		     speedbar-previously-used-expansion-list-name)))
  (setq speedbar-previously-used-expansion-list-name
	speedbar-initial-expansion-list-name
	speedbar-initial-expansion-list-name new-default)
  (if (and (speedbar-current-frame) (frame-live-p (speedbar-current-frame)))
      (progn
	(speedbar-refresh)
	(speedbar-reconfigure-keymaps))))

(defun speedbar-fetch-replacement-function (function)
  "Return a current mode-specific replacement for function, or nil.
Scans `speedbar-mode-functions-list' first for the current mode, then
for FUNCTION."
  (cdr (assoc function
	      (cdr (assoc speedbar-initial-expansion-list-name
			  speedbar-mode-functions-list)))))

(defun speedbar-add-mode-functions-list (new-list)
  "Add NEW-LIST to the list of mode functions.
See `speedbar-mode-functions-list' for details."
  (add-to-list 'speedbar-mode-functions-list new-list))

\f
;;; Special speedbar display management
;;
(defun speedbar-maybe-add-localized-support (buffer)
  "Quick check function called on BUFFERs by the speedbar timer function.
Maintains the value of local variables which control speedbar's use
of the special mode functions."
  (or speedbar-special-mode-expansion-list
      (speedbar-add-localized-speedbar-support buffer)))

(defun speedbar-add-localized-speedbar-support (buffer)
  "Add localized speedbar support to BUFFER's mode if it is available."
  (interactive "bBuffer: ")
  (if (stringp buffer) (setq buffer (get-buffer buffer)))
  (if (not (buffer-live-p buffer))
      nil
    (with-current-buffer buffer
      (save-match-data
	(let ((ms (symbol-name major-mode)) v)
	  (if (not (string-match "-mode$" ms))
	      nil ;; do nothing to broken mode
	    (setq ms (substring ms 0 (match-beginning 0)))
	    (setq v (intern-soft (concat ms "-speedbar-buttons")))
	    (make-local-variable 'speedbar-special-mode-expansion-list)
	    (if (not v)
		(setq speedbar-special-mode-expansion-list t)
	      ;; If it is autoloaded, we need to load it now so that
	      ;; we have access to the variable -speedbar-menu-items.
              (autoload-do-load (symbol-function v) v)
	      (setq speedbar-special-mode-expansion-list (list v))
	      (setq v (intern-soft (concat ms "-speedbar-key-map")))
	      (if (not v)
		  nil ;; don't add special keymap
                (setq-local speedbar-special-mode-key-map
                            (symbol-value v)))
	      (setq v (intern-soft (concat ms "-speedbar-menu-items")))
	      (if (not v)
		  nil ;; don't add special menus
                (setq-local speedbar-easymenu-definition-special
                            (symbol-value v))))))))))

(defun speedbar-remove-localized-speedbar-support (buffer)
  "Remove any traces that BUFFER supports speedbar in a specialized way."
  (with-current-buffer buffer
    (kill-local-variable 'speedbar-special-mode-expansion-list)
    (kill-local-variable 'speedbar-special-mode-key-map)
    (kill-local-variable 'speedbar-easymenu-definition-special)))
\f
;;; File button management
;;
(defun speedbar-file-lists (directory)
  "Create file lists for DIRECTORY.
The car is the list of directories, the cdr is list of files not
matching ignored headers.  Cache any directory files found in
`speedbar-directory-contents-alist' and use that cache before scanning
the file-system."
  (setq directory (expand-file-name directory))
  ;; find the directory, either in the cache, or build it.
  (or (and (not dframe-power-click) ;; In powerclick mode, always rescan.
           (cdr-safe (assoc directory speedbar-directory-contents-alist)))
      (let ((default-directory directory)
	    (dir (directory-files directory nil))
	    (dirs nil)
	    (files nil))
	(while dir
	  (if (not
	       (or (string-match speedbar-file-unshown-regexp (car dir))
		   (member (car dir) vc-directory-exclusion-list)
		   (string-match speedbar-directory-unshown-regexp (car dir))))
	      (if (file-directory-p (car dir))
		  (setq dirs (cons (car dir) dirs))
		(setq files (cons (car dir) files))))
	  (setq dir (cdr dir)))
	(let ((nl (cons (nreverse dirs) (list (nreverse files))))
              (ae (assoc directory speedbar-directory-contents-alist)))
          (if ae (setcdr ae nl)
            (push (cons directory nl)
                  speedbar-directory-contents-alist))
	  nl))
      ))

(defun speedbar-directory-buttons (directory _index)
  "Insert a single button group at point for DIRECTORY.
Each directory part is a different button.  If part of the directory
matches the user directory ~, then it is replaced with a ~.
INDEX is not used, but is required by the caller."
  (let* ((tilde (expand-file-name "~/"))
	 (dd (expand-file-name directory))
	 (junk (string-match (regexp-quote tilde) dd))
	 (displayme (if junk
			(concat "~/" (substring dd (match-end 0)))
		      dd))
	 (p (point)))
    (if (string-match "^~[/\\]?\\'" displayme) (setq displayme tilde))
    (insert displayme)
    (save-excursion
      (goto-char p)
      (while (re-search-forward "\\([^/\\]+\\)[/\\]" nil t)
	(speedbar-make-button (match-beginning 1) (match-end 1)
			      'speedbar-directory-face
			      'speedbar-highlight-face
			      'speedbar-directory-buttons-follow
			      (if (and (= (match-beginning 1) p)
				       (not (char-equal (char-after (+ p 1)) ?:)))
				  (expand-file-name "~/")  ;the tilde
				(buffer-substring-no-properties
				 p (match-end 0)))))
      ;; Nuke the beginning of the directory if it's too long...
      (cond ((eq speedbar-directory-button-trim-method 'span)
	     (beginning-of-line)
	     (let ((ww (or (speedbar-frame-width) 20)))
	       (move-to-column ww nil)
	       (while (>= (current-column) ww)
		 (re-search-backward "[/\\]" nil t)
		 (if (<= (current-column) 2)
		     (progn
		       (re-search-forward "[/\\]" nil t)
		       (if (< (current-column) 4)
			   (re-search-forward "[/\\]" nil t))
		       (forward-char -1)))
		 (if (looking-at "[/\\]?$")
		     (beginning-of-line)
		   (insert "/...\n ")
		   (move-to-column ww nil)))))
	    ((eq speedbar-directory-button-trim-method 'trim)
	     (end-of-line)
	     (let ((ww (or (speedbar-frame-width) 20))
		   (tl (current-column)))
	       (if (< ww tl)
		   (progn
		     (move-to-column (- tl ww))
		     (if (re-search-backward "[/\\]" nil t)
			 (progn
			   (delete-region (point-min) (point))
			   (insert "$")
			   )))))))
      )
    (if (string-match "\\`[/\\][^/\\]+[/\\]\\'" displayme)
	(progn
	  (insert "  ")
	  (let ((p (point)))
	    (insert "<root>")
	    (speedbar-make-button p (point)
				  'speedbar-directory-face
				  'speedbar-highlight-face
				  'speedbar-directory-buttons-follow
				  "/"))))
    (end-of-line)
    (insert-char ?\n 1 nil)))

(defun speedbar-make-tag-line (exp-button-type
			       exp-button-char exp-button-function
			       exp-button-data
			       tag-button tag-button-function tag-button-data
			       tag-button-face depth)
  "Create a tag line with EXP-BUTTON-TYPE for the small expansion button.
This is the button that expands or contracts a node (if applicable),
and EXP-BUTTON-CHAR the character in it (+, -, ?, etc).  EXP-BUTTON-FUNCTION
is the function to call if it's clicked on.  Button types are
`bracket', `angle', `curly', `expandtag', `statictag', t, or nil.
EXP-BUTTON-DATA is extra data attached to the text forming the expansion
button.

Next, TAG-BUTTON is the text of the tag.  TAG-BUTTON-FUNCTION is the
function to call if clicked on, and TAG-BUTTON-DATA is the data to
attach to the text field (such a tag positioning, etc).
TAG-BUTTON-FACE is a face used for this type of tag.

Lastly, DEPTH shows the depth of expansion.

This function assumes that the cursor is in the speedbar window at the
position to insert a new item, and that the new item will end with a CR."
  (let ((start (point))
	(end (progn
	       (insert (int-to-string depth) ":")
	       (point)))
	(depthspacesize (* depth speedbar-indentation-width)))
    (put-text-property start end 'invisible t)
    (insert-char ?  depthspacesize nil)
    (put-text-property (- (point) depthspacesize) (point) 'invisible nil)
    (let* ((exp-button (cond ((eq exp-button-type 'bracket) "[%c]")
			     ((eq exp-button-type 'angle) "<%c>")
			     ((eq exp-button-type 'curly) "{%c}")
			     ((eq exp-button-type 'expandtag) " %c>")
			     ((eq exp-button-type 'statictag) " =>")
			     (t ">")))
	   (buttxt (format exp-button exp-button-char))
	   (start (point))
	   (end (progn (insert buttxt) (point)))
	   (bf (if (and exp-button-type (not (eq exp-button-type 'statictag)))
		   'speedbar-button-face nil))
	   (mf (if exp-button-function 'speedbar-highlight-face nil))
	   )
      (speedbar-make-button start end bf mf exp-button-function exp-button-data)
      (if speedbar-hide-button-brackets-flag
	  (progn
	    (put-text-property start (1+ start) 'invisible t)
	    (put-text-property end (1- end) 'invisible t)))
      )
    (insert-char ?  1 nil)
    (put-text-property (1- (point)) (point) 'invisible nil)
    (let ((start (point))
	  (end (progn (insert tag-button) (point))))
      (insert-char ?\n 1 nil)
      (put-text-property (1- (point)) (point) 'invisible nil)
      (speedbar-make-button start end tag-button-face
			    (if tag-button-function 'speedbar-highlight-face nil)
			    tag-button-function tag-button-data))
    ))

(defun speedbar-change-expand-button-char (char)
  "Change the expansion button character to CHAR for the current line."
  (save-excursion
    (beginning-of-line)
    (if (re-search-forward ":\\s-*.\\([-+?]\\)" (line-end-position) t)
	(speedbar-with-writable
	  (goto-char (match-end 1))
	  (insert-char char 1 t)
	  (forward-char -1)
	  (delete-char -1)
	  ;;(put-text-property (point) (1- (point)) 'invisible nil)
	  ;; make sure we fix the image on the text here.
	  (speedbar-insert-image-button-maybe (- (point) 1) 3)))))

\f
;;; Build button lists
;;
(defun speedbar-insert-files-at-point (files level)
  "Insert list of FILES starting at point, and indenting all files to LEVEL.
Tag expandable items with a +, otherwise a ?.  Don't highlight ? as we
don't know how to manage them.  The input parameter FILES is a cons
cell of the form (DIRLIST . FILELIST)."
  ;; Start inserting all the directories
  (let ((dirs (car files)))
    (while dirs
      (speedbar-make-tag-line 'angle ?+ 'speedbar-dired (car dirs)
			      (car dirs) 'speedbar-dir-follow nil
			      'speedbar-directory-face level)
      (setq dirs (cdr dirs))))
  (let ((lst (car (cdr files)))
	(case-fold-search t))
    (while lst
      (let* ((known (string-match speedbar-file-regexp (car lst)))
	     (expchar (if known ?+ ??))
	     (fn (if known 'speedbar-tag-file nil)))
	(if (or speedbar-show-unknown-files (/= expchar ??))
	    (speedbar-make-tag-line 'bracket expchar fn (car lst)
				    (car lst) 'speedbar-find-file nil
				    'speedbar-file-face level)))
      (setq lst (cdr lst)))))

(defun speedbar-default-directory-list (directory index)
  "Insert files for DIRECTORY with level INDEX at point."
  (speedbar-insert-files-at-point
   (speedbar-file-lists directory) index)
  (speedbar-reset-scanners)
  (if (= index 0)
      ;; If the shown files variable has extra directories, then
      ;; it is our responsibility to redraw them all
      ;; Luckily, the nature of inserting items into this list means
      ;; that by reversing it, we can easily go in the right order
      (let ((sf (cdr (reverse speedbar-shown-directories))))
	(setq speedbar-shown-directories
	      (list (expand-file-name default-directory)))
	;; Expand them all as we find them.
	(while sf
	  (if (speedbar-goto-this-file (car sf))
	      (progn
		(beginning-of-line)
		(if (looking-at "[0-9]+:[ ]*<")
		    (progn
		      (goto-char (match-end 0))
		      (speedbar-do-function-pointer)))))
	  (setq sf (cdr sf)))
	)))
;;; Generic List support
;;
;;  Generic lists are hierarchies of tags which we may need to permute
;;  in order to make it look nice.
;;
;;  A generic list is of the form:
;;  ( ("name" . marker-or-number)                <-- one tag at this level
;;    ("name" marker-or-number goto-fun . args)  <-- one tag at this level
;;    ("name" ("name" . mon) ("name" . mon) )    <-- one group of tags
;;    ("name" mon ("name" . mon) )               <-- group w/ a position and tags
(defun speedbar-generic-list-group-p (sublst)
  "Non-nil if SUBLST is a group.
Groups may optionally contain a position."
  (and (stringp (car-safe sublst))
       (or (and (listp (cdr-safe sublst))
		(or (speedbar-generic-list-tag-p (car-safe (cdr-safe sublst)))
		    (speedbar-generic-list-group-p (car-safe (cdr-safe sublst))
						   )))
	   (and (number-or-marker-p (car-safe (cdr-safe sublst)))
		(listp (cdr-safe (cdr-safe sublst)))
		(speedbar-generic-list-tag-p
		 (car-safe (cdr-safe (cdr-safe sublst)))))
	   )))

(defun speedbar-generic-list-positioned-group-p (sublst)
  "Non-nil if SUBLST is a group with a position."
  (and (stringp (car-safe sublst))
       (number-or-marker-p (car-safe (cdr-safe sublst)))
       (listp (cdr-safe (cdr-safe sublst)))
       (let ((rest (car-safe (cdr-safe (cdr-safe sublst)))))
	 (or (speedbar-generic-list-tag-p rest)
	     (speedbar-generic-list-group-p rest)
	     (speedbar-generic-list-positioned-group-p rest)
	     ))))

(defun speedbar-generic-list-tag-p (sublst)
  "Non-nil if SUBLST is a tag."
  (and (stringp (car-safe sublst))
       (or (and (number-or-marker-p (cdr-safe sublst))
		(not (cdr-safe (cdr-safe sublst))))
           (ignore-errors (and (number-or-marker-p (nth 1 sublst))
                               (functionp (nth 2 sublst))))
	   ;; For semantic/bovine items, this is needed
	   (symbolp (car-safe (cdr-safe sublst))))
       ))

(defun speedbar-sort-tag-hierarchy (lst)
  "Sort all elements of tag hierarchy LST."
  (sort (copy-alist lst)
	(lambda (a b) (string< (car a) (car b)))))

(defun speedbar-try-completion (string alist)
  "A wrapper for `try-completion'.
Passes STRING and ALIST to `try-completion' if ALIST
passes some tests."
  (if (and (consp alist)
	   (listp (car alist)) (stringp (car (car alist))))
      (try-completion string alist)
    nil))

(defun speedbar-prefix-group-tag-hierarchy (lst)
  "Prefix group names for tag hierarchy LST."
  (let ((newlst nil)
	(sublst nil)
	(work-list nil)
	(junk-list nil)
	(short-group-list nil)
	(short-start-name nil)
	(short-end-name nil)
	(num-shorts-grouped 0)
	(bins (make-vector 256 nil))
	(diff-idx 0))
    (if (<= (length lst) speedbar-tag-regroup-maximum-length)
	;; Do nothing.  Too short to bother with.
	lst
      ;; Break out sub-lists
      (while lst
	(if (speedbar-generic-list-group-p (car-safe lst))
	    (setq newlst (cons (car lst) newlst))
	  (setq sublst (cons (car lst) sublst)))
	(setq lst (cdr lst)))
      ;; Reverse newlst because it was made backwards.
      ;; Sublist doesn't need reversing because the act
      ;; of binning things will reverse it for us.
      (setq newlst (nreverse newlst)
	    sublst sublst)
      ;; Now, first find out how long our list is.  Never let a
      ;; list get-shorter than our minimum.
      (if (<= (length sublst) speedbar-tag-split-minimum-length)
	  (setq work-list sublst)
	(setq diff-idx (length (speedbar-try-completion "" sublst)))
	;; Sort the whole list into bins.
	(while sublst
	  (let ((e (car sublst))
		(s (car (car sublst))))
	    (cond ((<= (length s) diff-idx)
		   ;; 0 storage bin for shorty.
		   (aset bins 0 (cons e (aref bins 0))))
		  (t
		   ;; stuff into a bin based on ascii value at diff
		   (aset bins (aref s diff-idx)
			 (cons e (aref bins (aref s diff-idx)))))))
	  (setq sublst (cdr sublst)))
	;; Go through all our bins  Stick singles into our
	;; junk-list, everything else as sublsts in work-list.
	;; If two neighboring lists are both small, make a grouped
	;; group combining those two sub-lists.
	(setq diff-idx 0)
	(while (> 256 diff-idx)
	  ;; The bins contents are currently in forward order.
	  (let ((l (aref bins diff-idx)))
	    (if l
		(let ((tmp (cons (speedbar-try-completion "" l) l)))
		  (if (or (> (length l) speedbar-tag-regroup-maximum-length)
			  (> (+ (length l) (length short-group-list))
			     speedbar-tag-split-minimum-length))
		      (progn
			;; We have reached a longer list, so we
			;; must finish off a grouped group.
			(cond
			 ((and short-group-list
			       (= (length short-group-list)
				  num-shorts-grouped))
			  ;; All singles?  Junk list
			  (setq junk-list (append (nreverse short-group-list)
						  junk-list)))
			 ((= num-shorts-grouped 1)
			  ;; Only one short group?  Just stick it in
			  ;; there by itself.  Make a group, and find
			  ;; a subexpression
			  (let ((subexpression (speedbar-try-completion
						"" short-group-list)))
			    (if (< (length subexpression)
				   speedbar-tag-group-name-minimum-length)
				(setq subexpression
				      (concat short-start-name
					      " ("
					      (substring
					       (car (car short-group-list))
					       (length short-start-name))
					      ")")))
			    (setq work-list
				  (cons (cons subexpression
					      short-group-list)
					work-list ))))
			 (short-group-list
			  ;; Multiple groups to be named in a special
			  ;; way by displaying the range over which we
			  ;; have grouped them.
			  (setq work-list
				(cons (cons
                                       (concat short-start-name
					       " to " short-end-name)
                                       (sort (copy-sequence short-group-list)
                                             (lambda (e1 e2)
                                               (string< (car e1)
                                                        (car e2)))))
				      work-list))))
		     ;; Reset short group list information every time.
			(setq short-group-list nil
			      short-start-name nil
			      short-end-name nil
			      num-shorts-grouped 0)))
		  ;; Ok, now that we cleaned up the short-group-list,
		  ;; we can deal with this new list, to decide if it
		  ;; should go on one of these sub-lists or not.
		  (if (< (length l) speedbar-tag-regroup-maximum-length)
		      (setq short-group-list (append l short-group-list)
			    num-shorts-grouped (1+ num-shorts-grouped)
			    short-end-name (car tmp)
			    short-start-name (if short-start-name
						 short-start-name
					       (car tmp)))
		    (setq work-list (cons tmp work-list))))))
	  (setq diff-idx (1+ diff-idx))))
      ;; Did we run out of things?  Drop our new list onto the end.
      (cond
       ((and short-group-list (= (length short-group-list) num-shorts-grouped))
	;; All singles?  Junk list
	(setq junk-list (append short-group-list junk-list)))
       ((= num-shorts-grouped 1)
	;; Only one short group?  Just stick it in
	;; there by itself.
	(setq work-list
	      (cons (cons (speedbar-try-completion "" short-group-list)
			  short-group-list)
		    work-list)))
       (short-group-list
	;; Multiple groups to be named in a special
	;; way by displaying the range over which we
	;; have grouped them.
	(setq work-list
	      (cons (cons (concat short-start-name " to " short-end-name)
			  short-group-list)
		    work-list))))
      ;; Reverse the work list nreversed when consing.
      (setq work-list (nreverse work-list))
      ;; Now, stick our new list onto the end of
      (if work-list
	  (if junk-list
	      (append newlst work-list junk-list)
	    (append newlst work-list))
	(append  newlst junk-list)))))

(defun speedbar-trim-words-tag-hierarchy (lst)
  "Trim all words in a tag hierarchy.
Base trimming information on word separators, and group names.
Argument LST is the list of tags to trim."
  (let ((newlst nil)
	(sublst nil)
	(trim-prefix nil)
	(trim-chars 0)
	(trimlst nil))
    (while lst
      (if (speedbar-generic-list-group-p (car-safe lst))
	  (setq newlst (cons (car lst) newlst))
	(setq sublst (cons (car lst) sublst)))
      (setq lst (cdr lst)))
    ;; Get the prefix to trim by.  Make sure that we don't trim
    ;; off silly pieces, only complete understandable words.
    (setq trim-prefix (speedbar-try-completion "" sublst)
	  newlst (nreverse newlst))
    (if (or (= (length sublst) 1)
	    (not trim-prefix)
	    (not (string-match "\\(\\w+\\W+\\)+" trim-prefix)))
	(append newlst (nreverse sublst))
      (setq trim-prefix (substring trim-prefix (match-beginning 0)
				   (match-end 0)))
      (setq trim-chars (length trim-prefix))
      (while sublst
	(setq trimlst (cons
		       (cons (substring (car (car sublst)) trim-chars)
			     (cdr (car sublst)))
		       trimlst)
	      sublst (cdr sublst)))
      ;; Put the lists together
      (append newlst trimlst))))

(defun speedbar-simple-group-tag-hierarchy (lst)
  "Create a simple `Tags' group with orphaned tags.
Argument LST is the list of tags to sort into groups."
  (let ((newlst nil)
	(sublst nil))
    (while lst
      (if (speedbar-generic-list-group-p (car-safe lst))
	  (setq newlst (cons (car lst) newlst))
	(setq sublst (cons (car lst) sublst)))
      (setq lst (cdr lst)))
    (if (not newlst)
	(nreverse sublst)
      (setq newlst (cons (cons "Tags" (nreverse sublst)) newlst))
      (nreverse newlst))))

(defun speedbar-create-tag-hierarchy (lst)
  "Adjust the tag hierarchy in LST, and return it.
This uses `speedbar-tag-hierarchy-method' to determine how to adjust
the list."
  (let* ((f (save-excursion
	      (forward-line -1)
	      (or (speedbar-line-file)
		  (speedbar-line-directory))))
	 (methods (if (get-file-buffer f)
		      (with-current-buffer (get-file-buffer f)
                        speedbar-tag-hierarchy-method)
		    speedbar-tag-hierarchy-method))
         (lst (copy-tree lst)))
    (while methods
      (setq lst (funcall (car methods) lst)
	    methods (cdr methods)))
    lst))

(defvar speedbar-generic-list-group-expand-button-type 'curly
  "The type of button created for groups of tags.
Good values for this are `curly' and `expandtag'.
Make buffer local for your mode.")

(defvar speedbar-generic-list-tag-button-type nil
  "The type of button created for tags in generic lists.
Good values for this are nil and `statictag'.
Make buffer local for your mode.")

(defun speedbar-insert-generic-list (level lst expand-fun find-fun)
  "At LEVEL, insert a generic multi-level alist LST.
Associations with lists get {+} tags (to expand into more nodes) and
those with positions just get a > as the indicator.  {+} buttons will
have the function EXPAND-FUN and the token is the cdr list.  The token
name will have the function FIND-FUN and not token."
  ;; Remove imenu rescan button
  (if (string= (car (car lst)) "*Rescan*")
      (setq lst (cdr lst)))
  ;; Get, and set up variables that define how we treat these tags.
   (let ((f (save-excursion (forward-line -1)
			    (or (speedbar-line-file)
				(speedbar-line-directory))))
	 expand-button tag-button)
     (save-excursion
       (if (get-file-buffer f)
	   (set-buffer (get-file-buffer f)))
       (setq expand-button speedbar-generic-list-group-expand-button-type
	     tag-button speedbar-generic-list-tag-button-type))
     ;; Adjust the list.
     (setq lst (speedbar-create-tag-hierarchy lst))
     ;; insert the parts
     (while lst
       (cond ((null (car-safe lst)) nil)	;this would be a separator
	    ((speedbar-generic-list-tag-p (car lst))
	     (speedbar-make-tag-line tag-button
				     nil nil nil ;no expand button data
				     (car (car lst)) ;button name
				     find-fun ;function
				     (cdr (car lst)) ;token is position
				     'speedbar-tag-face
				     (1+ level)))
	    ((speedbar-generic-list-positioned-group-p (car lst))
	     (speedbar-make-tag-line expand-button
				     ?+ expand-fun (cdr (cdr (car lst)))
				     (car (car lst)) ;button name
				     find-fun ;function
				     (car (cdr (car lst))) ;token is posn
				     'speedbar-tag-face
				     (1+ level)))
	    ((speedbar-generic-list-group-p (car lst))
	     (speedbar-make-tag-line expand-button
				     ?+ expand-fun (cdr (car lst))
				     (car (car lst)) ;button name
				     nil nil 'speedbar-tag-face
				     (1+ level)))
	    (t (dframe-message "speedbar-insert-generic-list: malformed list!")
	       ))
      (setq lst (cdr lst)))))

(defun speedbar-insert-imenu-list (indent lst)
  "At level INDENT, insert the imenu generated LST."
  (speedbar-insert-generic-list indent lst
				'speedbar-tag-expand
				'speedbar-tag-find))

(defun speedbar-insert-etags-list (indent lst)
  "At level INDENT, insert the etags generated LST."
  (speedbar-insert-generic-list indent lst
				'speedbar-tag-expand
				'speedbar-tag-find))
\f
;;; Timed functions
;;
(defun speedbar-update-contents ()
  "Generically update the contents of the speedbar buffer."
  (interactive)
  ;; Set the current special buffer
  (setq speedbar-desired-buffer nil)

  ;; Check for special modes
  (speedbar-maybe-add-localized-support (current-buffer))

  ;; Choose the correct method of doodling.
  (if (and speedbar-mode-specific-contents-flag
	   (consp speedbar-special-mode-expansion-list)
	   (local-variable-p
	    'speedbar-special-mode-expansion-list
	    (current-buffer)))
      ;;(eq (get major-mode 'mode-class 'special)))
      (speedbar-update-special-contents)
    (speedbar-update-directory-contents)))

(defun speedbar-update-localized-contents ()
  "Update the contents of the speedbar buffer for the current situation."
  ;; Due to the historical growth of speedbar, we need to do something
  ;; special for "files" mode.  Too bad.
  (let ((name speedbar-initial-expansion-list-name)
	(funclst (speedbar-initial-expansion-list))
	)
    (if (string= name "files")
	;; Do all the files type work.  It still goes through the
	;; expansion list stuff. :(
	(if (or (member (expand-file-name default-directory)
			speedbar-shown-directories)
		(and speedbar-ignored-directory-regexp
		     (string-match
		      speedbar-ignored-directory-regexp
		      (expand-file-name default-directory))))
	    nil
	  (if (<= 1 speedbar-verbosity-level)
	      (dframe-message "Updating speedbar to: %s..."
				default-directory))
	  (speedbar-update-directory-contents)
	  (if (<= 1 speedbar-verbosity-level)
	      (progn
		(dframe-message "Updating speedbar to: %s...done"
				  default-directory)
		(dframe-message nil))))
      ;; Else, we can do a short cut.  No text cache.
      (let ((cbd (expand-file-name default-directory)))
	(set-buffer speedbar-buffer)
	(speedbar-with-writable
	  (let* ((window (get-buffer-window speedbar-buffer 0))
		 (p (window-point window))
		 (start (window-start window)))
	    (erase-buffer)
	    (dolist (func funclst)
	      (setq default-directory cbd)
	      (funcall func cbd 0))
	    (speedbar-reconfigure-keymaps)
	    (set-window-point window p)
	    (set-window-start window start)))))))

(defun speedbar-update-directory-contents ()
  "Update the contents of the speedbar buffer based on the current directory."
    (let ((cbd (expand-file-name default-directory))
	  cbd-parent
	  (funclst (speedbar-initial-expansion-list))
	  (cache speedbar-full-text-cache)
	  ;; disable stealth during update
	  (speedbar-stealthy-function-list nil)
	  (use-cache nil)
	  (expand-local nil)
	  ;; Because there is a bug I can't find just yet
	  (inhibit-quit nil))
      (set-buffer speedbar-buffer)
      ;; If we are updating contents to where we are, then this is
      ;; really a request to update existing contents, so we must be
      ;; careful with our text cache!
      (if (member cbd speedbar-shown-directories)
	  (progn
	    (setq cache nil)
	    ;; If the current directory is not the last element in the dir
	    ;; list, then we ALSO need to zap the list of expanded directories
	    (if (/= (length (member cbd speedbar-shown-directories)) 1)
		(setq speedbar-shown-directories (list cbd))))

	;; Build cbd-parent, and see if THAT is in the current shown
	;; directories.  First, go through pains to get the parent directory
	(if (and speedbar-smart-directory-expand-flag
		 (save-match-data
		   (setq cbd-parent cbd)
		   (if (string-match "[/\\]$" cbd-parent)
		       (setq cbd-parent (substring cbd-parent 0
						   (match-beginning 0))))
		   (setq cbd-parent (file-name-directory cbd-parent)))
		 (member cbd-parent speedbar-shown-directories))
	    (setq expand-local t)

	  ;; If this directory is NOT in the current list of available
	  ;; directories, then use the cache, and set the cache to our new
	  ;; value.  Make sure to unhighlight the current file, or if we
	  ;; come back to this directory, it might be a different file
	  ;; and then we get a mess!
	  (if (> (point-max) 1)
	      (progn
		(speedbar-clear-current-file)
		(setq speedbar-full-text-cache
		      (cons speedbar-shown-directories (buffer-string)))))

	  ;; Check if our new directory is in the list of directories
	  ;; shown in the text-cache
	  (if (member cbd (car cache))
	      (setq speedbar-shown-directories (car cache)
		    use-cache t)
	    ;; default the shown directories to this list...
	    (setq speedbar-shown-directories (list cbd)))
	  ))
      (if (not expand-local) (setq speedbar-last-selected-file nil))
      (speedbar-with-writable
	(if (and expand-local
		 ;; Find this directory as a speedbar node.
		 (speedbar-directory-line cbd))
	    ;; Open it.
	    (speedbar-expand-line)
	  (let* ((window (get-buffer-window speedbar-buffer 0))
		 (p (window-point window))
		 (start (window-start window)))
	    (erase-buffer)
	    (cond (use-cache
		   (setq default-directory
			 (nth (1- (length speedbar-shown-directories))
			      speedbar-shown-directories))
		   (insert (cdr cache)))
		  (t
		   (dolist (func funclst)
		     (setq default-directory cbd)
	    (funcall func cbd 0))))
	    (set-window-point window p)
	    (set-window-start window start)))))
  (speedbar-reconfigure-keymaps))

(defun speedbar-update-special-contents ()
  "Use the mode-specific variable to fill in the speedbar buffer.
This should only be used by modes classified as special."
  (let ((funclst speedbar-special-mode-expansion-list)
	(specialbuff (current-buffer)))
    (setq speedbar-desired-buffer specialbuff)
    (with-current-buffer speedbar-buffer
      ;; If we are leaving a directory, cache it.
      (if (not speedbar-shown-directories)
	  ;; Do nothing
	  nil
	;; Clean up directory maintenance stuff
	(speedbar-clear-current-file)
	(setq speedbar-full-text-cache
	      (cons speedbar-shown-directories (buffer-string))
	      speedbar-shown-directories nil))
      ;; Now fill in the buffer with our newly found specialized list.
      (speedbar-with-writable
	  (dolist (func funclst)
	    ;; We do not erase the buffer because these functions may
	    ;; decide NOT to update themselves.
	    (funcall func specialbuff)))))
  (speedbar-reconfigure-keymaps))

(defun speedbar-set-timer (timeout)
  "Set up the speedbar timer with TIMEOUT.
Uses `dframe-set-timer'.
Also resets scanner functions."
  (dframe-set-timer timeout 'speedbar-timer-fn 'speedbar-update-flag)
  ;; Apply a revert hook that will reset the scanners.  We attach to revert
  ;; because most reverts occur during VC state change, and this lets our
  ;; VC scanner fix itself.
  (if timeout
      (add-hook 'after-revert-hook 'speedbar-reset-scanners)
    (remove-hook 'after-revert-hook 'speedbar-reset-scanners))
  ;; change this if it changed for some reason
  (speedbar-set-mode-line-format))

(defun speedbar-timer-fn ()
  "Run whenever Emacs is idle to update the speedbar item."
  (if (or (not (speedbar-current-frame))
	  (not (frame-live-p (speedbar-current-frame))))
      (speedbar-set-timer nil)
    ;; Save all the match data so that we don't mess up executing fns
    (save-match-data
      ;; Only do stuff if the frame is visible, not an icon, and if
      ;; it is currently flagged to do something.
      (if (and speedbar-update-flag
	       (speedbar-current-frame)
	       (frame-visible-p (speedbar-current-frame))
	       (not (eq (frame-visible-p (speedbar-current-frame)) 'icon)))
	  (let ((af (selected-frame)))
	      (dframe-select-attached-frame speedbar-frame)
	      ;; make sure we at least choose a window to
	      ;; get a good directory from
	      (if (window-minibuffer-p)
		  nil
		;; Check for special modes
		(speedbar-maybe-add-localized-support (current-buffer))
		;; Update for special mode all the time!
		(if (and speedbar-mode-specific-contents-flag
			 (consp speedbar-special-mode-expansion-list)
			 (local-variable-p
			  'speedbar-special-mode-expansion-list
			  (current-buffer)))
		    ;;(eq (get major-mode 'mode-class 'special)))
		    (progn
		      (if (<= 2 speedbar-verbosity-level)
			  (dframe-message
			   "Updating speedbar to special mode: %s..."
			   major-mode))
		      (speedbar-update-special-contents)
		      (if (<= 2 speedbar-verbosity-level)
			  (progn
			    (dframe-message
			     "Updating speedbar to special mode: %s...done"
			     major-mode)
			    (dframe-message nil))))

 		  ;; Update all the contents if directories change!
 		  (unless (and (or (member major-mode speedbar-ignored-modes)
				   (eq af (speedbar-current-frame))
				   (not (buffer-file-name)))
			       ;; Always update for GUD.
			       (not (string-equal "GUD"
				     speedbar-initial-expansion-list-name)))
		    (speedbar-update-localized-contents)))
		(select-frame af))
	    ;; Now run stealthy updates of time-consuming items
	    (speedbar-stealthy-updates)))))
  (run-hooks 'speedbar-timer-hook))

\f
;;; Stealthy activities
;;
(defvar speedbar-stealthy-update-recurse nil
  "Recursion avoidance variable for stealthy update.")

(defun speedbar-stealthy-updates ()
  "For a given speedbar, run all items in the stealthy function list.
Each item returns t if it completes successfully, or nil if
interrupted by the user."
  (if (not speedbar-stealthy-update-recurse)
      (let ((l (speedbar-initial-stealthy-functions))
	    (speedbar-stealthy-update-recurse t))
	(speedbar-with-writable
	  (while (and l (funcall (car l)))
	    ;;(sit-for 0)
	    (setq l (cdr l))))
	;;(dframe-message "Exit with %S" (car l))
	)))

(defun speedbar-reset-scanners ()
  "Reset any variables used by functions in the stealthy list as state.
If new functions are added, their state needs to be updated here."
  (setq speedbar-vc-to-do-point t
	speedbar-obj-to-do-point t
	speedbar-ro-to-do-point t)
  (run-hooks 'speedbar-scanner-reset-hook)
  )

(defun speedbar-find-selected-file (file)
  "Go to the line where FILE is."

  (set-buffer speedbar-buffer)

  (goto-char (point-min))
  (let ((m nil))
    (while (and (setq m (re-search-forward
			 (concat " \\(" (regexp-quote (file-name-nondirectory file))
				 "\\)\\(" speedbar-indicator-regex "\\)?\n")
			 nil t))
		(not (string= file
			      (concat
			       (speedbar-line-directory
				(save-excursion
				  (goto-char (match-beginning 0))
				  (beginning-of-line)
				  (save-match-data
				    (looking-at "[0-9]+:")
				    (string-to-number (match-string 0)))))
			       (match-string 1))))))
    (if m
	(progn
	  (goto-char (match-beginning 1))
	  (match-string 1)))))

(defun speedbar-clear-current-file ()
  "Locate the file thought to be current, and remove its highlighting."
  (save-excursion
    ;;(set-buffer speedbar-buffer)
    (if speedbar-last-selected-file
	(speedbar-with-writable
	  (if (speedbar-find-selected-file speedbar-last-selected-file)
	      (put-text-property (match-beginning 1)
				 (match-end 1)
				 'face
				 'speedbar-file-face))))))

(defun speedbar-update-current-file ()
  "Find the current file, and update our visuals to indicate its name.
This is specific to file names.  If the file name doesn't show up, but
it should be in the list, then the directory cache needs to be updated."
  (let* ((lastf (selected-frame))
	 (newcfd (save-excursion
		   (dframe-select-attached-frame speedbar-frame)
		   (let ((rf (if (buffer-file-name)
				 (buffer-file-name)
			       nil)))
		     (select-frame lastf)
		     rf)))
	 (newcf (if newcfd newcfd))
	 (lastb (current-buffer))
	 (sucf-recursive (boundp 'sucf-recursive))
	 (case-fold-search t))
    (if (and newcf
	     ;; check here, that way we won't refresh to newcf until
	     ;; its been written, thus saving ourselves some time
	     (file-exists-p newcf)
	     (not (string= newcf speedbar-last-selected-file)))
	(progn
	  ;; It is important to select the frame, otherwise the window
	  ;; we want the cursor to move in will not be updated by the
	  ;; search-forward command.
	  (select-frame (speedbar-current-frame))
	  ;; Remove the old file...
	  (speedbar-clear-current-file)
	  ;; now highlight the new one.
	  ;; (set-buffer speedbar-buffer)
	  (speedbar-with-writable
	    (if (speedbar-find-selected-file newcf)
		;; put the property on it
		(put-text-property (match-beginning 1)
				   (match-end 1)
				   'face
				   'speedbar-selected-face)
	      ;; Oops, it's not in the list.  Should it be?
	      (if (and (string-match speedbar-file-regexp newcf)
		       (string= (file-name-directory newcfd)
				(expand-file-name default-directory)))
		  ;; yes, it is (we will ignore unknowns for now...)
		  (progn
		    (speedbar-refresh)
		    (if (speedbar-find-selected-file newcf)
			;; put the property on it
			(put-text-property (match-beginning 1)
					   (match-end 1)
					   'face
					   'speedbar-selected-face)))
		;; if it's not in there now, whatever...
		))
	    (setq speedbar-last-selected-file newcf))
	  (if (not sucf-recursive)
	      (progn

                ;;Sat Dec 15 2001 12:40 AM (burton@openprivacy.org): this
                ;;doesn't need to be in.  We don't want to recenter when we are
                ;;updating files.

                ;;(speedbar-center-buffer-smartly)

		(speedbar-position-cursor-on-line)
		))
	  (set-buffer lastb)
	  (select-frame lastf)
	  )))
  ;; return that we are done with this activity.
  t)

(defun speedbar-add-indicator (indicator-string &optional replace-this)
  "Add INDICATOR-STRING to the end of this speedbar line.
If INDICATOR-STRING is space, and REPLACE-THIS is a character,
then the existing indicator is removed.  If there is already an
indicator, then do not add a space."
  (beginning-of-line)
  ;; The nature of the beast: Assume we are in "the right place"
  (end-of-line)
  (skip-chars-backward (concat " " speedbar-vc-indicator
			       speedbar-object-read-only-indicator
			       (car speedbar-obj-indicator)
			       (cdr speedbar-obj-indicator)))
  (if (and (not (looking-at speedbar-indicator-regex))
	   (not (string= indicator-string " ")))
      (insert speedbar-indicator-separator))
  (speedbar-with-writable
    (save-excursion
      (if (and replace-this
	       (re-search-forward replace-this (line-end-position) t))
	  (delete-region (match-beginning 0) (match-end 0))))
    (end-of-line)
    (if (not (string= " " indicator-string))
	(let ((start (point)))
	  (insert indicator-string)
	  (speedbar-insert-image-button-maybe start (length indicator-string))
	  ))))

(defun speedbar-check-read-only ()
  "Scan all the files in a directory, and for each see if it is read only."
  ;; Check for to-do to be reset.  If reset but no RCS is available
  ;; then set to nil (do nothing) otherwise, start at the beginning
  (save-excursion
    (if speedbar-buffer (set-buffer speedbar-buffer))
    (if (eq speedbar-ro-to-do-point t)
	(setq speedbar-ro-to-do-point 0))
    (if (numberp speedbar-ro-to-do-point)
	(progn
	  (goto-char speedbar-ro-to-do-point)
	  (while (and (not (input-pending-p))
		      (re-search-forward "^\\([0-9]+\\):\\s-*[[<][+?-][]>] "
					 nil t))
	    (setq speedbar-ro-to-do-point (point))
	    (let ((f (speedbar-line-file)))
	      (if f
		  (if (not (file-writable-p f))
		      (speedbar-add-indicator
		       speedbar-object-read-only-indicator
		       (regexp-quote speedbar-object-read-only-indicator))
		    (speedbar-add-indicator
		     " " (regexp-quote
			  speedbar-object-read-only-indicator))))))
	  (if (input-pending-p)
	      ;; return that we are incomplete
	      nil
	    ;; we are done, set to-do to nil
	    (setq speedbar-ro-to-do-point nil)
	    ;; and return t
	    t))
      t)))

(defun speedbar-check-vc ()
  "Scan all files in a directory, and for each see if it's checked out.
See `speedbar-this-file-in-vc' and `speedbar-vc-check-dir-p' for how
to add more types of version control systems."
  ;; Check for to-do to be reset.  If reset but no RCS is available
  ;; then set to nil (do nothing) otherwise, start at the beginning
  (save-excursion
    (if speedbar-buffer (set-buffer speedbar-buffer))
    (if (and speedbar-vc-do-check (eq speedbar-vc-to-do-point t)
	     (speedbar-vc-check-dir-p default-directory)
	     (not (or (and (featurep 'ange-ftp)
			   (string-match
			    (car (symbol-value 'ange-ftp-name-format))
                            (expand-file-name default-directory))))))
	(setq speedbar-vc-to-do-point 0))
    (if (numberp speedbar-vc-to-do-point)
	(progn
	  (goto-char speedbar-vc-to-do-point)
	  (while (and (not (input-pending-p))
		      (re-search-forward "^\\([0-9]+\\):\\s-*\\[[+?-]\\] "
					 nil t))
	    (setq speedbar-vc-to-do-point (point))
	    (if (speedbar-check-vc-this-line (match-string 1))
		(speedbar-add-indicator speedbar-vc-indicator
					(regexp-quote speedbar-vc-indicator))
	      (speedbar-add-indicator " "
				      (regexp-quote speedbar-vc-indicator))))
	  (if (input-pending-p)
	      ;; return that we are incomplete
	      nil
	    ;; we are done, set to-do to nil
	    (setq speedbar-vc-to-do-point nil)
	    ;; and return t
	    t))
      t)))

(defun speedbar-check-vc-this-line (depth)
  "Return t if the file on this line is checked out of a version control system.
Parameter DEPTH is a string with the current depth of indentation of
the file being checked."
  (let* ((d (string-to-number depth))
	 (f (speedbar-line-directory d))
	 (fn (buffer-substring-no-properties
	      ;; Skip-chars: thanks ptype@dra.hmg.gb
	      (point) (progn
			(skip-chars-forward "^ " (line-end-position))
			(point))))
	 (fulln (concat f fn)))
    (if (<= 2 speedbar-verbosity-level)
	(dframe-message "Speedbar vc check...%s" fulln))
    (and (file-writable-p fulln)
	 (speedbar-this-file-in-vc f fn)
         t)))

(defun speedbar-vc-check-dir-p (directory)
  "Return t if we should bother checking DIRECTORY for version control files.
This can be overloaded to add new types of version control systems."
  (or
   (catch t (dolist (vcd vc-directory-exclusion-list)
	      (if (file-exists-p (concat directory vcd)) (throw t t))) nil)
   ;; User extension
   (run-hook-with-args-until-success 'speedbar-vc-directory-enable-hook
                                     directory)
   ))

(defun speedbar-this-file-in-vc (directory name)
  "Return non-nil if the file NAME in DIRECTORY is under version control.
Automatically recognizes all VCs supported by VC mode.  You can
optimize this function by overriding it and only doing those checks
that will occur on your system."
  (or
   (vc-backend (concat directory "/" name))
   ;; User extension
   (run-hook-with-args-until-success 'speedbar-vc-in-control-hook
                                     directory name)
   ))

;; Object File scanning
(defun speedbar-check-objects ()
  "Scan all files in a directory, and for each see if there is an object.
See `speedbar-check-obj-this-line' and `speedbar-obj-alist' for how
to add more object types."
  ;; Check for to-do to be reset.  If reset but no RCS is available
  ;; then set to nil (do nothing) otherwise, start at the beginning
  (save-excursion
    (if speedbar-buffer (set-buffer speedbar-buffer))
    (if (and speedbar-obj-do-check (eq speedbar-obj-to-do-point t))
	(setq speedbar-obj-to-do-point 0))
    (if (numberp speedbar-obj-to-do-point)
	(progn
	  (goto-char speedbar-obj-to-do-point)
	  (while (and (not (input-pending-p))
		      (re-search-forward "^\\([0-9]+\\):\\s-*\\[[+-]\\] "
					 nil t))
	    (setq speedbar-obj-to-do-point (point))
	    (let ((ind (speedbar-check-obj-this-line (match-string 1))))
	      (if (not ind) (setq ind " "))
	      (speedbar-add-indicator ind (concat
					   (car speedbar-obj-indicator)
					   "\\|"
					   (cdr speedbar-obj-indicator)))))
	  (if (input-pending-p)
	      ;; return that we are incomplete
	      nil
	    ;; we are done, set to-do to nil
	    (setq speedbar-obj-to-do-point nil)
	    ;; and return t
	    t))
      t)))

(defun speedbar-check-obj-this-line (depth)
  "Return t if the file on this line has an associated object.
Parameter DEPTH is a string with the current depth of indentation of
the file being checked."
  (let* ((d (string-to-number depth))
	 (f (speedbar-line-directory d))
	 (fn (buffer-substring-no-properties
	      ;; Skip-chars: thanks ptype@dra.hmg.gb
	      (point) (progn
			(skip-chars-forward "^ " (line-end-position))
			(point))))
	 (fulln (concat f fn)))
    (if (<= 2 speedbar-verbosity-level)
	(dframe-message "Speedbar obj check...%s" fulln))
    (let ((oa speedbar-obj-alist))
      (while (and oa (not (string-match (car (car oa)) fulln)))
	(setq oa (cdr oa)))
      (if (not (and oa (file-exists-p (concat (file-name-sans-extension fulln)
					      (cdr (car oa))))))
	  nil
	;; Find out if the object is out of date or not.
	(let ((date1 (file-attribute-modification-time
		      (file-attributes fulln)))
	      (date2 (file-attribute-modification-time
		      (file-attributes (concat
					(file-name-sans-extension fulln)
					(cdr (car oa)))))))
	  (if (time-less-p date1 date2)
	      (car speedbar-obj-indicator)
	    (cdr speedbar-obj-indicator)))))))
\f
;;; Clicking Activity
;;
(defun speedbar-position-cursor-on-line ()
  "Position the cursor on a line."
  (let ((oldpos (point)))
    (beginning-of-line)
    (if (looking-at "[0-9]+:\\s-*..?.? ")
	(goto-char (1- (match-end 0)))
      (goto-char oldpos))))

(defun speedbar-click (e)
  "Activate any speedbar buttons where the mouse is clicked.
This must be bound to a mouse event.  A button is any location of text
with a mouse face that has a text property called `speedbar-function'.
Argument E is the click event."
  ;; Backward compatibility let statement.
  (let ((speedbar-power-click dframe-power-click))
    (speedbar-do-function-pointer))
  (dframe-quick-mouse e))

(defun speedbar-do-function-pointer ()
  "Look under the cursor and examine the text properties.
From this extract the file/tag name, token, indentation level and call
a function if appropriate."
  (let* ((speedbar-frame (speedbar-current-frame))
	 (fn (get-text-property (point) 'speedbar-function))
	 (tok (get-text-property (point) 'speedbar-token))
	 ;; The 1-,+ is safe because scanning starts AFTER the point
	 ;; specified.  This lets the search include the character the
	 ;; cursor is on.
	 (tp (previous-single-property-change
	      (1+ (point)) 'speedbar-function))
	 (np (next-single-property-change
	      (point) 'speedbar-function))
	 (txt (buffer-substring-no-properties (or tp (point-min))
					      (or np (point-max))))
	 (dent (save-excursion (beginning-of-line)
			       (string-to-number
				(if (looking-at "[0-9]+")
				    (buffer-substring-no-properties
				    (match-beginning 0) (match-end 0))
				  "0")))))
    ;;(dframe-message "%S:%S:%S:%s" fn tok txt dent)
    (and fn (funcall fn txt tok dent)))
  (speedbar-position-cursor-on-line))
\f
;;; Reading info from the speedbar buffer
;;
(defun speedbar-line-text (&optional p)
  "Retrieve the text after prefix junk for the current line.
Optional argument P is where to start the search from."
  (save-excursion
    (if p (goto-char p))
    (beginning-of-line)
    (if (looking-at (concat
		     "\\([0-9]+\\): *[[<{]?[-+?= ][]>}@()|] \\([^ \n]+\\)"))
	(get-text-property (match-beginning 2) 'speedbar-text)
      nil)))

(defun speedbar-line-token (&optional p)
  "Retrieve the token information after the prefix junk for the current line.
Optional argument P is where to start the search from."
  (save-excursion
    (if p (goto-char p))
    (beginning-of-line)
    (if (looking-at (concat
		     "\\([0-9]+\\): *[[<{]?[-+?= ][]>}@()|] \\([^ \n]+\\)\\("
		     speedbar-indicator-regex "\\)?"))
	(progn
	  (goto-char (match-beginning 2))
	  (get-text-property (point) 'speedbar-token))
      nil)))

(defun speedbar-line-file (&optional p)
  "Retrieve the file or whatever from the line at point P.
The return value is a string representing the file.  If it is a
directory, then it is the directory name."
  (save-match-data
    (save-restriction
      (widen)
      (let ((f (speedbar-line-text p)))
	(if f
	    (let* ((depth (string-to-number (match-string 1)))
		   (directory (speedbar-line-directory depth)))
	      (if (file-exists-p (concat directory f))
		  (concat directory f)
		nil))
	  nil)))))

(defun speedbar-goto-this-file (file)
  "If FILE is displayed, go to this line and return t.
Otherwise do not move and return nil."
  (let ((directory (substring (file-name-directory (expand-file-name file))
			 (length (expand-file-name default-directory))))
	(dest (point)))
    (save-match-data
      (goto-char (point-min))
      ;; scan all the directories
      (while (and directory (not (eq directory t)))
	(if (string-match "^[/\\]?\\([^/\\]+\\)" directory)
	    (let ((pp (match-string 1 directory)))
	      (if (save-match-data
		    (re-search-forward (concat "> " (regexp-quote pp) "$")
				       nil t))
		  (setq directory (substring directory (match-end 1)))
		(setq directory nil)))
	  (setq directory t)))
      ;; find the file part
      (if (or (not directory) (string= (file-name-nondirectory file) ""))
	  ;; only had a dir part
	  (if directory
	      (progn
		(speedbar-position-cursor-on-line)
		t)
	    (goto-char dest) nil)
	;; find the file part
	(let ((nd (file-name-nondirectory file)))
	  (if (re-search-forward
	       (concat "] \\(" (regexp-quote nd)
		       "\\)\\(" speedbar-indicator-regex "\\)$")
	       nil t)
	      (progn
		(speedbar-position-cursor-on-line)
		t)
	    (goto-char dest)
	    nil))))))

(defun speedbar-line-directory (&optional depth)
  "Retrieve the directory name associated with the current line.
This may require traversing backwards from DEPTH and combining the default
directory with these items.  This function is replaceable in
`speedbar-mode-functions-list' as `speedbar-line-directory'."
  (save-restriction
    (widen)
    (let ((rf (speedbar-fetch-replacement-function 'speedbar-line-directory)))
      (if rf (funcall rf depth) default-directory))))

(defun speedbar-files-line-directory (&optional depth)
  "Retrieve the directory associated with the current line.
This may require traversing backwards from DEPTH and combining the default
directory with these items."
  (save-excursion
    (save-match-data
      (if (not depth)
	  (progn
	    (beginning-of-line)
	    (looking-at "^\\([0-9]+\\):")
	    (setq depth (string-to-number (match-string 1)))))
      (let ((directory nil))
	(setq depth (1- depth))
	(while (/= depth -1)
	  (if (not (re-search-backward (format "^%d:" depth) nil t))
	      (error "Error building filename of tag")
	    (cond ((looking-at "[0-9]+:\\s-*<->\\s-+\\([^\n]+\\)")
		   (setq directory (concat (speedbar-line-text)
				      "/"
				      directory)))
		  ((looking-at "[0-9]+:\\s-*[-]\\s-+\\([^\n]+\\)")
		   ;; This is the start of our directory.
		   (setq directory (speedbar-line-text)))))
	  (setq depth (1- depth)))
	(if (and directory
		 (string-match (concat speedbar-indicator-regex "$")
			       directory))
	    (setq directory (substring directory 0 (match-beginning 0))))
	(concat default-directory directory)))))

(defun speedbar-directory-line (directory)
  "Position the cursor on the line specified by DIRECTORY."
  (save-match-data
    (if (string-match "[/\\]$" directory)
	(setq directory (substring directory 0 (match-beginning 0))))
    (let ((nomatch t) (depth 0)
	  (fname (file-name-nondirectory directory))
	  (pname (file-name-directory directory)))
      (if (not (member pname speedbar-shown-directories))
	  (error "Internal Error: File %s not shown in speedbar" directory))
      (goto-char (point-min))
      (while (and nomatch
		  (re-search-forward
		   (concat "[]>] \\(" (regexp-quote fname)
			   "\\)\\(" speedbar-indicator-regex "\\)?$")
		   nil t))
	(beginning-of-line)
	(looking-at "\\([0-9]+\\):")
	(setq depth (string-to-number (match-string 0))
	      nomatch (not (string= pname (speedbar-line-directory depth))))
	(end-of-line))
      (beginning-of-line)
      (not nomatch))))

(defun speedbar-edit-line ()
  "Edit whatever tag or file is on the current speedbar line."
  (interactive)
  (or (save-excursion
	(beginning-of-line)
	;; If this fails, then it is a non-standard click, and as such,
	;; perfectly allowed.
	(if (re-search-forward "[]>?}] [^ ]"
			       (line-end-position)
			       t)
	    (progn
	      (forward-char -1)
	      (speedbar-do-function-pointer))
	  nil))
      (speedbar-do-function-pointer)))

(defun speedbar-expand-line (&optional arg)
  "Expand the line under the cursor.
With universal argument ARG, flush cached data."
  (interactive "P")
  (beginning-of-line)
  (let* ((dframe-power-click arg)
	 (speedbar-power-click arg))
    (condition-case nil
	(progn
	  (re-search-forward ":\\s-*.\\+. "
			     (line-end-position))
	  (forward-char -2)
	  (speedbar-do-function-pointer))
      (error (speedbar-position-cursor-on-line)))))

(defun speedbar-flush-expand-line ()
  "Expand the line under the cursor and flush any cached information."
  (interactive)
  (speedbar-expand-line 1))

(defun speedbar-contract-line ()
  "Contract the line under the cursor."
  (interactive)
  (beginning-of-line)
  (condition-case nil
      (progn
	(re-search-forward ":\\s-*.-. "
			   (line-end-position))
	(forward-char -2)
	(speedbar-do-function-pointer))
    (error (speedbar-position-cursor-on-line))))

(defun speedbar-toggle-line-expansion ()
  "Contract or expand the line under the cursor."
  (interactive)
  (beginning-of-line)
  (condition-case nil
      (progn
	(re-search-forward ":\\s-*.[-+]. "
			   (line-end-position))
	(forward-char -2)
	(speedbar-do-function-pointer))
    (error (speedbar-position-cursor-on-line))))

(defun speedbar--get-line-indent-level ()
  "Return the indentation level of the current line."
  (save-excursion
    (beginning-of-line)
    (if (looking-at "[0-9]+:")
        (string-to-number (match-string 0))
      0)))

(defun speedbar-expand-line-descendants (&optional arg)
  "Expand the line under the cursor and all descendants.
Optional argument ARG indicates that any cache should be flushed."
  (interactive "P")
  (dframe-message "Expanding all descendants...")
  (save-excursion
    (let ((top-depth (speedbar--get-line-indent-level)))
      ;; Attempt to expand the top-level item.
      (speedbar-expand-line arg)
      ;; Move forwards, either into the newly expanded list, onto an
      ;; already expanded list, onto a sibling item, or to the end of
      ;; the buffer.
      (while (and (zerop (forward-line 1))
                  (not (eobp))
                  (> (speedbar--get-line-indent-level) top-depth)
                  (speedbar-expand-line arg)))))
  (dframe-message "Expanding all descendants...done")
  (speedbar-position-cursor-on-line))

(defun speedbar-contract-line-descendants ()
  "Expand the line under the cursor and all descendants."
  (interactive)
  (speedbar-contract-line)
  ;; Don't need to do anything else since all descendants are
  ;; hidden by default anyway.  Yay!  It's easy.
  )

(defun speedbar-find-file (text _token indent)
  "Speedbar click handler for filenames.
TEXT, the file will be displayed in the attached frame.
TOKEN is unused, but required by the click handler.  INDENT is the
current indentation level."
  (let ((cdd (speedbar-line-directory indent)))
    ;; Run before visiting file hook here.
    (let ((f (selected-frame)))
      (dframe-select-attached-frame speedbar-frame)
      (run-hooks 'speedbar-before-visiting-file-hook)
      (select-frame f))
    (speedbar-find-file-in-frame (concat cdd text))
    (speedbar-stealthy-updates)
    (run-hooks 'speedbar-visiting-file-hook)
    ;; Reset the timer with a new timeout when clicking a file
    ;; in case the user was navigating directories, we can cancel
    ;; that other timer.
    (speedbar-set-timer dframe-update-speed))
  (dframe-maybee-jump-to-attached-frame))

(defun speedbar-dir-follow (text _token indent)
  "Speedbar click handler for directory names.
Clicking a directory will cause the speedbar to list files in
the subdirectory TEXT.  TOKEN is an unused requirement.  The
subdirectory chosen will be at INDENT level."
  (setq default-directory
	(concat (expand-file-name (concat (speedbar-line-directory indent) text))
		"/"))
  ;; Because we leave speedbar as the current buffer,
  ;; update contents will change directory without
  ;; having to touch the attached frame.  Turn off smart expand just
  ;; in case.
  (let ((speedbar-smart-directory-expand-flag nil))
    (speedbar-update-contents))
  (speedbar-set-timer dframe-update-speed)
  (setq speedbar-last-selected-file nil)
  (speedbar-stealthy-updates))

(defun speedbar-delete-subblock (indent)
  "Delete text from point to indentation level INDENT or greater.
Handles end-of-sublist smartly."
  (speedbar-with-writable
    (save-excursion
      (end-of-line) (forward-char 1)
      (let ((start (point)))
	(while (and (looking-at "^\\([0-9]+\\):")
		    (> (string-to-number (match-string 1)) indent)
		    (not (eobp)))
	  (forward-line 1)
	  (beginning-of-line))
	(delete-region start (point))))))

(defun speedbar-dired (text token indent)
  "Speedbar click handler for directory expand button.
Clicking this button expands or contracts a directory.  TEXT is the
button clicked which has either a + or -.  TOKEN is the directory to be
expanded.  INDENT is the current indentation level."
  (cond ((string-search "+" text)	;we have to expand this dir
	 (setq speedbar-shown-directories
	       (cons (expand-file-name
		      (concat (speedbar-line-directory indent) token "/"))
		     speedbar-shown-directories))
	 (speedbar-change-expand-button-char ?-)
	 (speedbar-reset-scanners)
	 (save-excursion
	   (end-of-line) (forward-char 1)
	   (speedbar-with-writable
	     (speedbar-default-directory-list
	      (concat (speedbar-line-directory indent) token "/")
	      (1+ indent)))))
	((string-search "-" text)	;we have to contract this node
	 (speedbar-reset-scanners)
	 (let ((oldl speedbar-shown-directories)
	       (newl nil)
	       (td (expand-file-name
		    (concat (speedbar-line-directory indent) token))))
	   (while oldl
	     (if (not (string-match (concat "^" (regexp-quote td)) (car oldl)))
		 (setq newl (cons (car oldl) newl)))
	     (setq oldl (cdr oldl)))
	   (setq speedbar-shown-directories (nreverse newl)))
	 (speedbar-change-expand-button-char ?+)
	 (speedbar-delete-subblock indent)
	 )
	(t (error "Ooops...  not sure what to do")))
  (speedbar-center-buffer-smartly)
  (save-excursion (speedbar-stealthy-updates)))

(defun speedbar-directory-buttons-follow (_text token _indent)
  "Speedbar click handler for default directory buttons.
TEXT is the button clicked on.  TOKEN is the directory to follow.
INDENT is the current indentation level and is unused."
  (setq default-directory (file-name-as-directory token))
  ;; Because we leave speedbar as the current buffer,
  ;; update contents will change directory without
  ;; having to touch the attached frame.
  (speedbar-update-contents)
  (speedbar-set-timer dframe-update-speed))

(defun speedbar-tag-file (text token indent)
  "The cursor is on a selected line.  Expand the tags in the specified file.
The parameter TEXT and TOKEN are required, where TEXT is the button
clicked, and TOKEN is the file to expand.  INDENT is the current
indentation level."
  (cond ((string-search "+" text)	;we have to expand this file
	 (let* ((fn (expand-file-name (concat (speedbar-line-directory indent)
					      token)))
		(lst (speedbar-fetch-dynamic-tags fn)))
	   ;; if no list, then remove expando button
	   (if (not lst)
	       (speedbar-change-expand-button-char ??)
	     (speedbar-change-expand-button-char ?-)
	     (speedbar-with-writable
	       (save-excursion
		 (end-of-line) (forward-char 1)
		 (funcall (car lst) indent (cdr lst)))))))
	((string-search "-" text)	;we have to contract this node
	 (speedbar-change-expand-button-char ?+)
	 (speedbar-delete-subblock indent))
	(t (error "Ooops...  not sure what to do")))
  (speedbar-center-buffer-smartly))

(defun speedbar-tag-find (_text token indent)
  "For the tag TEXT in a file TOKEN, go to that position.
INDENT is the current indentation level."
  (let ((file (speedbar-line-directory indent)))
    (let ((f (selected-frame)))
      (dframe-select-attached-frame speedbar-frame)
      (run-hooks 'speedbar-before-visiting-tag-hook)
      (select-frame f))
    (speedbar-find-file-in-frame file)
    (save-excursion (speedbar-stealthy-updates))
    ;; Reset the timer with a new timeout when clicking a file
    ;; in case the user was navigating directories, we can cancel
    ;; that other timer.
    (speedbar-set-timer dframe-update-speed)
    (goto-char token)
    (run-hooks 'speedbar-visiting-tag-hook)
    (dframe-maybee-jump-to-attached-frame)
    ))

(defun speedbar-tag-expand (text token indent)
  "Expand a tag sublist.  Imenu will return sub-lists of specialized tag types.
Etags does not support this feature.  TEXT will be the button string.
TOKEN will be the list, and INDENT is the current indentation level."
  (cond ((string-search "+" text)	;we have to expand this file
	 (speedbar-change-expand-button-char ?-)
	 (speedbar-with-writable
	   (save-excursion
	     (end-of-line) (forward-char 1)
	     (speedbar-insert-generic-list indent token 'speedbar-tag-expand
					   'speedbar-tag-find))))
	((string-search "-" text)	;we have to contract this node
	 (speedbar-change-expand-button-char ?+)
	 (speedbar-delete-subblock indent))
	(t (error "Ooops...  not sure what to do")))
  (speedbar-center-buffer-smartly))
\f
;;; Loading files into the attached frame.
;;
(defcustom speedbar-select-frame-method 'attached
  "Specify how to select a frame for displaying a file.
A number such as 1 or -1 means to pass that number to `other-frame'
while selecting a frame from speedbar.  Any other value means to use
the attached frame (the frame that speedbar was started from)."
  :group 'speedbar
  :type '(choice integer (other :tag "attached" attached)))

(defun speedbar-find-file-in-frame (file)
  "This will load FILE into the speedbar attached frame.
If the file is being displayed in a different frame already, then raise that
frame instead."
  (let* ((buff (find-file-noselect file))
	 (bwin (get-buffer-window buff 0)))
    (if bwin
	(progn
	  (select-window bwin)
	  (raise-frame (window-frame bwin)))
      (if dframe-power-click
	  (let ((pop-up-frames t)) (select-window (display-buffer buff)))
	(if (numberp speedbar-select-frame-method)
	    (other-frame speedbar-select-frame-method)
	  (dframe-select-attached-frame speedbar-frame))
	(switch-to-buffer buff))))
 )

;;; Centering Utility
;;
(defun speedbar-center-buffer-smartly ()
  "Recenter a speedbar buffer so the current indentation level is all visible.
This assumes that the cursor is on a file, or tag of a file which the user is
interested in."

  (save-selected-window

    (select-window (get-buffer-window speedbar-buffer t))

    (set-buffer speedbar-buffer)

    (if (<= (count-lines (point-min) (point-max))
	    (1- (window-height)))
	;; whole buffer fits
	(let ((cp (point)))

	  (goto-char (point-min))
	  (recenter 0)
	  (goto-char cp))
      ;; too big
      (let (depth start end exp p)
	(save-excursion
	  (beginning-of-line)
	  (setq depth (if (looking-at "[0-9]+")
			  (string-to-number (buffer-substring-no-properties
					  (match-beginning 0) (match-end 0)))
			0))
	  (setq exp (format "^%d:" depth)))
	(save-excursion
	  (end-of-line)
	  (if (re-search-backward exp nil t)
	      (setq start (point))
	    (setq start (point-min)))
	  (save-excursion		;Not sure about this part.
	    (end-of-line)
	    (setq p (point))
	    (while (and (not (re-search-forward exp nil t))
			(>= depth 0))
	      (setq depth (1- depth))
	      (setq exp (format "^%d:" depth)))
	    (if (/= (point) p)
		(setq end (point))
	      (setq end (point-max)))))
	;; Now work out the details of centering
	(let ((nl (count-lines start end))
              (wl (1- (window-height)))
	      (cp (point)))
	  (if (> nl wl)
	      ;; We can't fit it all, so just center on cursor
	      (progn (goto-char start)
		     (recenter 1))
	    ;; we can fit everything on the screen, but...
	    (if (and (pos-visible-in-window-p start (selected-window))
		     (pos-visible-in-window-p end (selected-window)))
		;; we are all set!
		nil
	      ;; we need to do something...
	      (goto-char start)
	      (let ((newcent (/ (- (window-height) nl) 2))
		    (lte (count-lines start (point-max))))
		(if (and (< (+ newcent lte) (window-height))
			 (> (- (window-height) lte 1)
			    newcent))
		    (setq newcent (- (window-height)
				     lte 1)))
		(recenter newcent))))
          (goto-char cp))))))
\f
;;; Tag Management -- List of expanders:
;;
(defun speedbar-fetch-dynamic-tags (file)
  "Return a list of tags generated dynamically from FILE.
This uses the entries in `speedbar-dynamic-tags-function-list'
to find the proper tags.  It is up to each of those individual
functions to do caching and flushing if appropriate."
  (save-excursion
    ;; If a file is in memory, switch to that buffer.  This allows
    ;; us to use the local variable.  If the file is on disk, we
    ;; can try a few of the defaults that can get tags without
    ;; opening the file.
    (if (get-file-buffer file)
	(set-buffer (get-file-buffer file)))
    ;; If there is a buffer-local value of
    ;; speedbar-dynamic-tags-function-list, it will now be available.
    (let ((dtf speedbar-dynamic-tags-function-list)
	  (ret t))
      (while (and (eq ret t) dtf)
	(setq ret
	      (if (fboundp (car (car dtf)))
		  (funcall (car (car dtf)) file)
		t))
	(if (eq ret t)
	    (setq dtf (cdr dtf))))
      (if (eq ret t)
	  ;; No valid tag list, return nil
	  nil
	;; We have some tags.  Return the list with the insert fn
	;; prepended
	(cons (cdr (car dtf)) ret)))))

;;; Tag Management -- Imenu
;;
(if (not speedbar-use-imenu-flag)

    nil

(eval-when-compile (require 'imenu))
(declare-function imenu--make-index-alist "imenu" (&optional no-error))

(defun speedbar-fetch-dynamic-imenu (file)
  "Load FILE into a buffer, and generate tags using Imenu.
Returns the tag list, or t for an error."
  ;; Load this AND compile it in
  (require 'imenu)
  (set-buffer (find-file-noselect file))
  (if dframe-power-click (setq imenu--index-alist nil))
  (condition-case nil
      (let ((index-alist (imenu--make-index-alist t)))
	(if speedbar-sort-tags
	    (sort (copy-alist index-alist)
		  (lambda (a b) (string< (car a) (car b))))
	  index-alist))
    (error t)))
)
\f
;;; Tag Management -- etags
;;
(defvar speedbar-fetch-etags-parse-list
  '(;; Note that java has the same parse-group as c
    ("\\.\\([cChH]\\|c\\+\\+\\|cpp\\|cc\\|hh\\|java\\|cxx\\|hxx\\)\\'" .
     speedbar-parse-c-or-c++tag)
    ("^\\.emacs$\\|.\\(el\\|l\\|lsp\\)\\'" .
     "def[^i]+\\s-+\\(\\(\\w\\|[-_]\\)+\\)\\s-*\C-?")
;    ("\\.\\([fF]\\|for\\|FOR\\|77\\|90\\)\\'" .
;      speedbar-parse-fortran77-tag)
    ("\\.tex\\'" . speedbar-parse-tex-string)
    ("\\.p\\'" .
     "\\(\\(FUNCTION\\|function\\|PROCEDURE\\|procedure\\)\\s-+\\([a-zA-Z0-9_.:]+\\)\\)\\s-*(?^?")
    )
  "Associations of file extensions and expressions for extracting tags.
To add a new file type, you would want to add a new association to the
list, where the car is the file match, and the cdr is the way to
extract an element from the tags output.  If the output is complex,
use a function symbol instead of regexp.  The function should expect
to be at the beginning of a line in the etags buffer.

This variable is ignored if `speedbar-use-imenu-flag' is non-nil.")

(defcustom speedbar-fetch-etags-command etags-program-name
  "Command used to create an etags file.
This variable is ignored if `speedbar-use-imenu-flag' is t."
  :group 'speedbar
  :type 'string)

(defcustom speedbar-fetch-etags-arguments '("-D" "-I" "-o" "-")
  "List of arguments to use with `speedbar-fetch-etags-command'.
This creates an etags output buffer.  Use `speedbar-toggle-etags' to
modify this list conveniently.
This variable is ignored if `speedbar-use-imenu-flag' is t."
  :group 'speedbar
  :type '(choice (const nil)
		 (repeat :tag "List of arguments" string)))

(defun speedbar-toggle-etags (flag)
  "Toggle FLAG in `speedbar-fetch-etags-arguments'.
FLAG then becomes a member of etags command line arguments.  If flag
is \"sort\", then toggle the value of `speedbar-sort-tags'.  If its
value is \"show\" then toggle the value of `speedbar-show-unknown-files'."
  (cond
   ((equal flag "sort")
    (setq speedbar-sort-tags (not speedbar-sort-tags)))
   ((equal flag "show")
    (setq speedbar-show-unknown-files (not speedbar-show-unknown-files)))
   ((or (equal flag "-C")
	(equal flag "-S")
	(equal flag "-D"))
    (if (member flag speedbar-fetch-etags-arguments)
	(setq speedbar-fetch-etags-arguments
	      (delete flag speedbar-fetch-etags-arguments))
      (add-to-list 'speedbar-fetch-etags-arguments flag)))
   (t nil)))

(defun speedbar-fetch-dynamic-etags (file)
  "For FILE, run etags and create a list of symbols extracted.
Each symbol will be associated with its line position in FILE."
  (let ((newlist nil))
    (save-excursion
      (if (get-buffer "*etags tmp*")
	  (kill-buffer "*etags tmp*"))	;kill to clean it up
      (if (<= 1 speedbar-verbosity-level)
	  (dframe-message "Fetching etags..."))
      (set-buffer (get-buffer-create "*etags tmp*"))
      (apply 'call-process speedbar-fetch-etags-command nil
	     (current-buffer) nil
	     (append speedbar-fetch-etags-arguments (list file)))
      (goto-char (point-min))
      (if (<= 1 speedbar-verbosity-level)
	  (dframe-message "Fetching etags..."))
      (let ((expr
	     (let ((exprlst speedbar-fetch-etags-parse-list)
		   (ans nil))
	       (while (and (not ans) exprlst)
		 (if (string-match (car (car exprlst)) file)
		     (setq ans (car exprlst)))
		 (setq exprlst (cdr exprlst)))
	       (cdr ans))))
	(if expr
	    (let (tnl)
	      (set-buffer (get-buffer-create "*etags tmp*"))
	      (while (not (save-excursion (end-of-line) (eobp)))
		(save-excursion
		  (setq tnl (speedbar-extract-one-symbol expr)))
		(if tnl (setq newlist (cons tnl newlist)))
		(forward-line 1)))
	  (dframe-message
	   "Sorry, no support for a file of that extension"))))
    (if speedbar-sort-tags
	(sort newlist (lambda (a b) (string< (car a) (car b))))
      (reverse newlist))))

;; This bit donated by Farzin Guilak <farzin@protocol.com> but I'm not
;; sure it's needed with the different sorting method.
;;
;(defun speedbar-clean-etags()
;  "Removes spaces before the ^? character, and removes `#define',
;return types, etc. preceding tags.  This ensures that the sort operation
;works on the tags, not the return types."
;  (save-excursion
;    (goto-char (point-min))
;    (while
;	(re-search-forward "(?[ \t](?\C-?" nil t)
;      (replace-match "\C-?" nil nil))
;    (goto-char (point-min))
;    (while
;	(re-search-forward "\\(.*[ \t]+\\)\\([^ \t\n]+.*\C-?\\)" nil t)
;      (delete-region (match-beginning 1) (match-end 1)))))

(defun speedbar-extract-one-symbol (expr)
  "At point, return nil, or one alist in the form (SYMBOL . POSITION).
The line should contain output from etags.  Parse the output using the
regular expression EXPR."
  (let* ((sym (if (stringp expr)
		  (if (save-excursion
			(re-search-forward expr (line-end-position) t))
		      (buffer-substring-no-properties (match-beginning 1)
						      (match-end 1)))
		(funcall expr)))
	 (pos (let ((j (re-search-forward "[\C-?\C-a]\\([0-9]+\\),\\([0-9]+\\)"
					  (line-end-position) t)))
		(if (and j sym)
		    (1+ (string-to-number (buffer-substring-no-properties
					(match-beginning 2)
					(match-end 2))))
		  0))))
    (if (/= pos 0)
	(cons sym pos)
      nil)))

(defun speedbar-parse-c-or-c++tag ()
  "Parse a C or C++ tag, which tends to be a little complex."
  (save-excursion
    (let ((bound (line-end-position)))
      (cond ((re-search-forward "\C-?\\([^\C-a]+\\)\C-a" bound t)
	     (buffer-substring-no-properties (match-beginning 1)
					     (match-end 1)))
	    ((re-search-forward "\\<\\([^ \t]+\\)\\s-+new(" bound t)
	     (buffer-substring-no-properties (match-beginning 1)
					     (match-end 1)))
	    ((re-search-forward "\\<\\([^ \t(]+\\)\\s-*(\C-?" bound t)
	     (buffer-substring-no-properties (match-beginning 1)
					     (match-end 1)))
	    (t nil))
      )))

(defun speedbar-parse-tex-string ()
  "Parse a Tex string.  Only find data which is relevant."
  (save-excursion
    (let ((bound (line-end-position)))
      (cond ((re-search-forward "\\(\\(sub\\)*section\\|chapter\\|cite\\)\\s-*{[^\C-?}]*}?" bound t)
	     (buffer-substring-no-properties (match-beginning 0)
					     (match-end 0)))
	    (t nil)))))

\f
;;; BUFFER DISPLAY mode.
;;
(defvar speedbar-buffers-key-map
  (let ((map (speedbar-make-specialized-keymap)))
    ;; Basic tree features
    (define-key map "e" #'speedbar-edit-line)
    (define-key map "\C-m" #'speedbar-edit-line)
    (define-key map "+" #'speedbar-expand-line)
    (define-key map "=" #'speedbar-expand-line)
    (define-key map "-" #'speedbar-contract-line)
    (define-key map " " #'speedbar-toggle-line-expansion)
    ;; Buffer specific keybindings
    (define-key map "k" #'speedbar-buffer-kill-buffer)
    (define-key map "r" #'speedbar-buffer-revert-buffer)
    map)
  "Keymap used when in the buffers display mode.")

(defvar speedbar-buffer-easymenu-definition
  '(["Jump to buffer" speedbar-edit-line t]
    ["Expand File Tags" speedbar-expand-line
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.\\+. "))]
    ["Flush Cache & Expand" speedbar-flush-expand-line
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.\\+. "))]
    ["Contract File Tags" speedbar-contract-line
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.-. "))]
    "----"
    ["Kill Buffer" speedbar-buffer-kill-buffer
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.[-+?]. "))]
    ["Revert Buffer" speedbar-buffer-revert-buffer
     (save-excursion (beginning-of-line)
		     (looking-at "[0-9]+: *.[-+?]. "))]
    )
  "Menu item elements shown when displaying a buffer list.")

(defun speedbar-buffer-buttons (_directory _zero)
  "Create speedbar buttons based on the buffers currently loaded.
DIRECTORY is the directory of the currently active buffer, and ZERO is 0."
  (speedbar-buffer-buttons-engine nil))

(defun speedbar-buffer-buttons-temp (_directory _zero)
  "Create speedbar buttons based on the buffers currently loaded.
DIRECTORY is the directory of the currently active buffer, and ZERO is 0."
  (speedbar-buffer-buttons-engine t))

(defun speedbar-buffer-buttons-engine (temp)
  "Create speedbar buffer buttons.
If TEMP is non-nil, then clicking on a buffer restores the previous display."
  (speedbar-insert-separator "Active Buffers:")
  (let ((bl (buffer-list))
	(case-fold-search t))
    (while bl
      (if (string-match "^[ *]" (buffer-name (car bl)))
	  nil
	(let* ((known (string-match speedbar-file-regexp
				    (buffer-name (car bl))))
	       (expchar (if known ?+ ??))
	       (fn (if known 'speedbar-tag-file nil))
	       (fname (with-current-buffer (car bl)
                        (buffer-file-name))))
	  (speedbar-make-tag-line 'bracket expchar fn
				  (if fname (file-name-nondirectory fname))
				  (buffer-name (car bl))
				  'speedbar-buffer-click temp
				  'speedbar-file-face 0)
	  (speedbar-buffers-tail-notes (car bl))))
      (setq bl (cdr bl)))
    (setq bl (buffer-list))
    (speedbar-insert-separator "Scratch Buffers:")
    (while bl
      (if (not (string-match "^\\*" (buffer-name (car bl))))
	  nil
	(if (eq (car bl) speedbar-buffer)
	    nil
	  (speedbar-make-tag-line 'bracket ?? nil nil
				  (buffer-name (car bl))
				  'speedbar-buffer-click temp
				  'speedbar-file-face 0)
	  (speedbar-buffers-tail-notes (car bl))))
      (setq bl (cdr bl)))
    (setq bl (buffer-list))
    ;;(speedbar-insert-separator "Hidden Buffers:")
    ;;(while bl
    ;;  (if (not (string-match "^ " (buffer-name (car bl))))
    ;;	  nil
    ;;	(if (eq (car bl) speedbar-buffer)
    ;;	    nil
    ;;	  (speedbar-make-tag-line 'bracket ?? nil nil
    ;;				  (buffer-name (car bl))
    ;;				  'speedbar-buffer-click temp
    ;;				  'speedbar-file-face 0)
    ;;	  (speedbar-buffers-tail-notes (car bl))))
    ;;  (setq bl (cdr bl)))
    ))

(defun speedbar-buffers-tail-notes (buffer)
  "Add a note to the end of the last tag line.
Argument BUFFER is the buffer being tested."
  (when (with-current-buffer buffer buffer-read-only)
    (speedbar-insert-button "%" nil nil nil nil t)))

(defun speedbar-buffers-item-info ()
  "Display information about the current buffer on the current line."
  (or (speedbar-item-info-tag-helper)
      (let* ((item (speedbar-line-text))
	     (buffer (if item (get-buffer item) nil)))
	(and buffer
	     (dframe-message "%s%s %S %d %s"
			       (if (buffer-modified-p buffer) "* " "")
			       item
			       (with-current-buffer buffer major-mode)
			       (with-current-buffer buffer (buffer-size))
			       (or (buffer-file-name buffer) "<No file>"))))))

(defun speedbar-buffers-line-directory (&optional _depth)
  "Fetch the directory of the file (buffer) specified on the current line.
Optional argument DEPTH specifies the current depth of the back search."
  (save-excursion
    (end-of-line)
    (let ((start (point)))
      ;; Buffers are always at level 0
      (if (not (re-search-backward "^0:" nil t))
	  nil
	(let* ((bn (speedbar-line-text))
	       (buffer (if bn (get-buffer bn))))
	  (if buffer
	      (if (eq start (line-end-position))
		  (or (with-current-buffer buffer default-directory)
		      "")
		(buffer-file-name buffer))))))))

(defun speedbar-buffer-click (text token _indent)
  "When the users clicks on a buffer-button in speedbar.
TEXT is the buffer's name, TOKEN and INDENT are unused."
  (if dframe-power-click
      (let ((pop-up-frames t)) (select-window (display-buffer text)))
    (dframe-select-attached-frame speedbar-frame)
    (switch-to-buffer text)
    (if token (speedbar-change-initial-expansion-list
	       speedbar-previously-used-expansion-list-name))))

(defun speedbar-buffer-kill-buffer ()
  "Kill the buffer the cursor is on in the speedbar buffer."
  (interactive)
  (or (save-excursion
	(let ((text (speedbar-line-text)))
	  (if (and (get-buffer text)
		   (speedbar-y-or-n-p (format "Kill buffer %s? " text)))
	      (kill-buffer text))
	  (speedbar-refresh)))))

(defun speedbar-buffer-revert-buffer ()
  "Revert the buffer the cursor is on in the speedbar buffer."
  (interactive)
  (save-excursion
    (beginning-of-line)
    ;; If this fails, then it is a non-standard click, and as such,
    ;; perfectly allowed
    (if (re-search-forward "[]>?}] [^ ]" (line-end-position) t)
	(let ((text (progn
		      (forward-char -1)
		      (buffer-substring (point) (line-end-position)))))
	  (if (get-buffer text)
	      (progn
		(set-buffer text)
		(revert-buffer t)))))))

\f
;;; Useful hook values and such.
;;
(defvar speedbar-highlight-one-tag-line nil
  "Overlay used for highlighting the most recently jumped to tag line.")

(defun speedbar-highlight-one-tag-line ()
  "Highlight the current line, unhighlighting a previously jumped to line."
  (speedbar-unhighlight-one-tag-line)
  (setq speedbar-highlight-one-tag-line
        (make-overlay (line-beginning-position)
                      (line-beginning-position 2)))
  (overlay-put speedbar-highlight-one-tag-line 'face
               'speedbar-highlight-face)
  (add-hook 'pre-command-hook 'speedbar-unhighlight-one-tag-line))

(defun speedbar-unhighlight-one-tag-line ()
  "Unhighlight the currently highlighted line."
  (when (and speedbar-highlight-one-tag-line
	     (not (eq this-command 'handle-switch-frame)))
    (delete-overlay speedbar-highlight-one-tag-line)
    (setq speedbar-highlight-one-tag-line nil)
    (remove-hook 'pre-command-hook 'speedbar-unhighlight-one-tag-line)))

(defun speedbar-recenter-to-top ()
  "Recenter the current buffer so point is on the top of the window."
  (recenter 1))

(defun speedbar-recenter ()
  "Recenter the current buffer so point is in the center of the window."
  (recenter (/ (window-height) 2)))

\f
;;; Color loading section.
;;
(defface speedbar-button-face '((((class color) (background light))
				 :foreground "green4")
				(((class color) (background dark))
				 :foreground "green3"))
  "Speedbar face for +/- buttons."
  :group 'speedbar-faces)

(defface speedbar-file-face '((((class color) (background light))
			       :foreground "cyan4")
			      (((class color) (background dark))
			       :foreground "cyan")
			      (t :weight bold))
  "Speedbar face for file names."
  :group 'speedbar-faces)

(defface speedbar-directory-face '((((class color) (background light))
				    :foreground "blue4")
				   (((class color) (background dark))
				    :foreground "light blue"))
  "Speedbar face for directory names."
  :group 'speedbar-faces)

(defface speedbar-tag-face '((((class color) (background light))
			      :foreground "brown")
			     (((class color) (background dark))
			      :foreground "yellow"))
  "Speedbar face for tags."
  :group 'speedbar-faces)

(defface speedbar-selected-face '((((class color) (background light))
				   :foreground "red" :underline t)
				  (((class color) (background dark))
				   :foreground "red" :underline t)
				  (t :underline t))
  "Speedbar face for the file in the active window."
  :group 'speedbar-faces)

(defface speedbar-highlight-face '((((class color) (background light))
				    :background "green")
				   (((class color) (background dark))
				    :background "sea green"))
  "Speedbar face for highlighting buttons with the mouse."
  :group 'speedbar-faces)

(defface speedbar-separator-face '((((class color) (background light))
				    :background "blue"
				    :foreground "white"
				    :overline "gray")
				   (((class color) (background dark))
				    :background "blue"
				    :foreground "white"
				    :overline "gray")
				   (((class grayscale monochrome)
				     (background light))
				    :background "black"
				    :foreground "white"
				    :overline "white")
				   (((class grayscale monochrome)
				     (background dark))
				    :background "white"
				    :foreground "black"
				    :overline "black"))
  "Speedbar face for separator labels in a display."
  :group 'speedbar-faces)

;; Fix a font lock problem for some versions of Emacs
(and (boundp 'font-lock-global-modes)
     font-lock-global-modes
     (if (eq font-lock-global-modes t)
	 (setq font-lock-global-modes '(not speedbar-mode))
       (if (eq (car font-lock-global-modes) 'not)
	   (add-to-list 'font-lock-global-modes 'speedbar-mode t)
	 (setq font-lock-global-modes (delq 'speedbar-mode
					    font-lock-global-modes)))))
\f
;;; Image management

(defvar speedbar-expand-image-button-alist
  '(("<+>" . ezimage-directory-plus)
    ("<->" . ezimage-directory-minus)
    ("< >" . ezimage-directory)
    ("[+]" . ezimage-page-plus)
    ("[-]" . ezimage-page-minus)
    ("[?]" . ezimage-page)
    ("[ ]" . ezimage-page)
    ("{+}" . ezimage-box-plus)
    ("{-}" . ezimage-box-minus)
    ("<M>" . ezimage-mail)
    ("<d>" . ezimage-document-tag)
    ("<i>" . ezimage-info-tag)
    (" =>" . ezimage-tag)
    (" +>" . ezimage-tag-gt)
    (" ->" . ezimage-tag-v)
    (">"   . ezimage-tag)
    ("@"   . ezimage-tag-type)
    ("  @" . ezimage-tag-type)
    ("*"   . ezimage-checkout)
    ("#"   . ezimage-object)
    ("!"   . ezimage-object-out-of-date)
    ("//"  . ezimage-label)
    ("%"   . ezimage-lock)
    )
  "List of text and image associations.")

(defun speedbar-insert-image-button-maybe (start length)
  "Insert an image button based on text starting at START for LENGTH chars.
If buttontext is unknown, just insert that text.
If we have an image associated with it, use that image."
  (when speedbar-use-images
    (let ((ezimage-expand-image-button-alist
	   speedbar-expand-image-button-alist))
      (ezimage-insert-image-button-maybe start length))))

(defun speedbar-image-dump ()
  "Dump out the current state of the Speedbar image alist.
See `speedbar-expand-image-button-alist' for details."
  (interactive)
  (with-output-to-temp-buffer "*Speedbar Images*"
    (with-current-buffer "*Speedbar Images*"
      (goto-char (point-max))
      (insert "Speedbar image cache.\n\n")
      (let ((start (point)) (end nil))
	(insert "Image\tText\tImage Name")
	(setq end (point))
	(insert "\n")
	(put-text-property start end 'face 'underline))
      (let ((ia speedbar-expand-image-button-alist))
	(while ia
	  (let ((start (point)))
	    (insert (car (car ia)))
	    (insert "\t")
	    (speedbar-insert-image-button-maybe start
						(length (car (car ia))))
	    (insert (car (car ia)) "\t" (format "%s" (cdr (car ia))) "\n"))
	  (setq ia (cdr ia)))))))

\f
;; Obsolete

(defvar speedbar-version "1.0"
  "The current version of speedbar.")
(make-obsolete-variable 'speedbar-version 'emacs-version "28.1")

(defvar speedbar-incompatible-version "0.14beta4"
  "This version of speedbar is incompatible with this version.
Due to massive API changes (removing the use of the word PATH)
this version is not backward compatible to 0.14 or earlier.")
(make-obsolete-variable 'speedbar-incompatible-version nil "28.1")

\f
(provide 'speedbar)

(run-hooks 'speedbar-load-hook)

;;; speedbar.el ends here

debug log:

solving 38fb641acf7 ...
found 38fb641acf7 in https://git.savannah.gnu.org/cgit/emacs.git

(*) 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).