all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob 1b557c41a5d4e746f87fa9eb8b4fcdefe577a450 186903 bytes (raw)
name: lisp/progmodes/cc-cmds.el 	 # note: path name is non-authoritative(*)

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
 
;;; cc-cmds.el --- user level commands for CC Mode

;; Copyright (C) 1985, 1987, 1992-2020 Free Software Foundation, Inc.

;; Authors:    2003- Alan Mackenzie
;;             1998- Martin Stjernholm
;;             1992-1999 Barry A. Warsaw
;;             1987 Dave Detlefs
;;             1987 Stewart Clamen
;;             1985 Richard M. Stallman
;; Maintainer: bug-cc-mode@gnu.org
;; Created:    22-Apr-1997 (split from cc-mode.el)
;; Keywords:   c languages
;; Package:    cc-mode

;; 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:

;;; Code:

(eval-when-compile
  (let ((load-path
	 (if (and (boundp 'byte-compile-dest-file)
		  (stringp byte-compile-dest-file))
	     (cons (file-name-directory byte-compile-dest-file) load-path)
	   load-path)))
    (load "cc-bytecomp" nil t)))

(cc-require 'cc-defs)
(cc-require 'cc-vars)
(cc-require 'cc-engine)

;; Silence the compiler.
(cc-bytecomp-defvar filladapt-mode)	; c-fill-paragraph contains a kludge
					; which looks at this.
(cc-bytecomp-defun electric-pair-post-self-insert-function)
(cc-bytecomp-defvar c-indent-to-body-directives)
\f
;; Indentation / Display syntax functions
(defvar c-fix-backslashes t)

(defvar c-syntactic-context)

(defun c-indent-line (&optional syntax quiet ignore-point-pos)
  "Indent the current line according to the syntactic context,
if `c-syntactic-indentation' is non-nil.  Optional SYNTAX is the
syntactic information for the current line.  Be silent about syntactic
errors if the optional argument QUIET is non-nil, even if
`c-report-syntactic-errors' is non-nil.  Normally the position of
point is used to decide where the old indentation is on a lines that
is otherwise empty (ignoring any line continuation backslash), but
that's not done if IGNORE-POINT-POS is non-nil.  Returns the amount of
indentation change \(in columns)."

  (let ((line-cont-backslash (save-excursion
			       (end-of-line)
			       (eq (char-before) ?\\)))
	(c-fix-backslashes c-fix-backslashes)
	bs-col
	shift-amt)
    (when (and (not ignore-point-pos)
	       (save-excursion
		 (beginning-of-line)
		 (looking-at (if line-cont-backslash
				 ;; Don't use "\\s " - ^L doesn't count as WS
				 ;; here
				 "\\([ \t]*\\)\\\\$"
			       "\\([ \t]*\\)$")))
	       (<= (point) (match-end 1)))
      ;; Delete all whitespace after point if there's only whitespace
      ;; on the line, so that any code that does back-to-indentation
      ;; or similar gets the current column in this case.  If this
      ;; removes a line continuation backslash it'll be restored
      ;; at the end.
      (unless c-auto-align-backslashes
	;; Should try to keep the backslash alignment
	;; in this case.
	(save-excursion
	  (goto-char (match-end 0))
	  (setq bs-col (1- (current-column)))))
      (delete-region (point) (match-end 0))
      (setq c-fix-backslashes t))
    (if c-syntactic-indentation
	(setq c-parsing-error
	      (or (let ((c-parsing-error nil)
			(c-syntactic-context
			 (or syntax
			     (and (boundp 'c-syntactic-context)
				  c-syntactic-context))))
		    (c-save-buffer-state (indent)
		      (unless c-syntactic-context
			(setq c-syntactic-context (c-guess-basic-syntax)))
		      (setq indent (c-get-syntactic-indentation
				    c-syntactic-context))
		      (and (not (c-echo-parsing-error quiet))
			   c-echo-syntactic-information-p
			   (message "syntax: %s, indent: %d"
				    c-syntactic-context indent))
		      (setq shift-amt (- indent (current-indentation))))
		    (c-shift-line-indentation shift-amt)
		    (run-hooks 'c-special-indent-hook)
		    c-parsing-error)
		  c-parsing-error))
      (let ((indent 0))
	(save-excursion
	  (while (and (= (forward-line -1) 0)
		      (if (looking-at "\\s *\\\\?$")
			  t
			(setq indent (current-indentation))
			nil))))
	(setq shift-amt (- indent (current-indentation)))
	(c-shift-line-indentation shift-amt)))
    (when (and c-fix-backslashes line-cont-backslash)
      (if bs-col
	  (save-excursion
	    (indent-to bs-col)
	    (insert ?\\))
	(when c-auto-align-backslashes
	  ;; Realign the line continuation backslash.
	  (c-backslash-region (point) (point) nil t))))
    shift-amt))

(defun c-newline-and-indent (&optional newline-arg)
  "Insert a newline and indent the new line.
This function fixes line continuation backslashes if inside a macro,
and takes care to set the indentation before calling
`indent-according-to-mode', so that lineup functions like
`c-lineup-dont-change' works better."

  ;; TODO: Backslashes before eol in comments and literals aren't
  ;; kept intact.
  (let ((c-macro-start (c-query-macro-start))
	;; Avoid calling c-backslash-region from c-indent-line if it's
	;; called during the newline call, which can happen due to
	;; c-electric-continued-statement, for example.  We also don't
	;; want any backslash alignment from indent-according-to-mode.
	(c-fix-backslashes nil)
	has-backslash insert-backslash
	start col)
    (save-excursion
      (beginning-of-line)
      (setq start (point))
      (while (and (looking-at "[ \t]*\\\\?$")
		  (= (forward-line -1) 0)))
      (setq col (current-indentation)))
    (when c-macro-start
      (if (and (eolp) (eq (char-before) ?\\))
	  (setq insert-backslash t
		has-backslash t)
	(setq has-backslash (eq (char-before (c-point 'eol)) ?\\))))
    (newline newline-arg)
    (indent-to col)
    (when c-macro-start
      (if insert-backslash
	  (progn
	    ;; The backslash stayed on the previous line.  Insert one
	    ;; before calling c-backslash-region, so that
	    ;; bs-col-after-end in it works better.  Fixup the
	    ;; backslashes on the newly inserted line.
	    (insert ?\\)
	    (backward-char)
	    (c-backslash-region (point) (point) nil t))
	;; The backslash moved to the new line, if there was any.  Let
	;; c-backslash-region fix a backslash on the previous line,
	;; and the one that might be on the new line.
	;; c-auto-align-backslashes is intentionally ignored here;
	;; maybe the moved backslash should be left alone if it's set,
	;; but we fix both lines on the grounds that the old backslash
	;; has been moved anyway and is now in a different context.
	(c-backslash-region start (if has-backslash (point) start) nil t)))
    (when c-syntactic-indentation
      ;; Reindent syntactically.  The indentation done above is not
      ;; wasted, since c-indent-line might look at the current
      ;; indentation.
      (let ((c-syntactic-context (c-save-buffer-state nil
				   (c-guess-basic-syntax))))
	;; We temporarily insert another line break, so that the
	;; lineup functions will see the line as empty.  That makes
	;; e.g. c-lineup-cpp-define more intuitive since it then
	;; proceeds to the preceding line in this case.
	(insert ?\n)
	(delete-horizontal-space)
	(setq start (- (point-max) (point)))
	(unwind-protect
	    (progn
	      (backward-char)
	      (indent-according-to-mode))
	  (goto-char (- (point-max) start))
	  (delete-char -1)))
      (when has-backslash
	;; Must align the backslash again after reindentation.  The
	;; c-backslash-region call above can't be optimized to ignore
	;; this line, since it then won't align correctly with the
	;; lines below if the first line in the macro is broken.
	(c-backslash-region (point) (point) nil t)))))

(defun c-show-syntactic-information (arg)
  "Show syntactic information for current line.
With universal argument, inserts the analysis as a comment on that line."
  (interactive "P")
  (let* ((c-parsing-error nil)
	 (syntax (if (boundp 'c-syntactic-context)
		     ;; Use `c-syntactic-context' in the same way as
		     ;; `c-indent-line', to be consistent.
		     c-syntactic-context
		   (c-save-buffer-state nil
		     (c-guess-basic-syntax)))))
    (if (not (consp arg))
	(let (elem pos ols)
	  (message "Syntactic analysis: %s" syntax)
	  (unwind-protect
	      (progn
		(while syntax
		  (setq elem (pop syntax))
		  (when (setq pos (c-langelem-pos elem))
		    (push (c-put-overlay pos (1+ pos)
					 'face 'highlight)
			  ols))
		  (when (setq pos (c-langelem-2nd-pos elem))
		    (push (c-put-overlay pos (1+ pos)
					 'face 'secondary-selection)
			  ols)))
		(sit-for 10))
	    (while ols
	      (c-delete-overlay (pop ols)))))
      (indent-for-comment)
      (insert-and-inherit (format "%s" syntax))
      ))
  (c-keep-region-active))

(defun c-syntactic-information-on-region (from to)
  "Insert a comment with the syntactic analysis on every line in the region."
  (interactive "*r")
  (save-excursion
    (save-restriction
      (narrow-to-region from to)
      (goto-char (point-min))
      (while (not (eobp))
	(c-show-syntactic-information '(0))
	(forward-line)))))

\f
;; Minor mode functions.
;; `c-block-comment-flag' gets initialized to the current mode's default in
;; c-basic-common-init.
(defvar c-block-comment-flag nil)
(make-variable-buffer-local 'c-block-comment-flag)

(defun c-update-modeline ()
  (let ((fmt (format "/%s%s%s%s%s"
		     (if c-block-comment-flag "*" "/")
		     (if c-electric-flag "l" "")
		     (if (and c-electric-flag c-auto-newline)
			 "a" "")
		     (if c-hungry-delete-key "h" "")
		     (if (and
			  ;; (cc-)subword might not be loaded.
			  (boundp 'c-subword-mode)
			  (symbol-value 'c-subword-mode))
                         ;; FIXME: subword-mode already comes with its
                         ;; own lighter!
			 "w"
		       "")))
        ;; FIXME: Derived modes might want to use something else
        ;; than a string for `mode-name'.
	(bare-mode-name (if (string-match "\\(^[^/]*\\)/" mode-name)
			    (match-string 1 mode-name)
			  mode-name)))
    (setq mode-name
	  (if (> (length fmt) 1)
	      (concat bare-mode-name fmt)
	bare-mode-name))
    (force-mode-line-update)))

(defun c-toggle-syntactic-indentation (&optional arg)
  "Toggle syntactic indentation.
Optional numeric ARG, if supplied, turns on syntactic indentation when
positive, turns it off when negative, and just toggles it when zero or
left out.

When syntactic indentation is turned on (the default), the indentation
functions and the electric keys indent according to the syntactic
context keys, when applicable.

When it's turned off, the electric keys don't reindent, the indentation
functions indents every new line to the same level as the previous
nonempty line, and \\[c-indent-command] adjusts the indentation in steps
specified by `c-basic-offset'.  The indentation style has no effect in
this mode, nor any of the indentation associated variables,
e.g. `c-special-indent-hook'.

This command sets the variable `c-syntactic-indentation'."
  (interactive "P")
  (setq c-syntactic-indentation
	(c-calculate-state arg c-syntactic-indentation))
  (c-keep-region-active))

(defun c-toggle-auto-newline (&optional arg)
  "Toggle auto-newline feature.
Optional numeric ARG, if supplied, turns on auto-newline when
positive, turns it off when negative, and just toggles it when zero or
left out.

Turning on auto-newline automatically enables electric indentation.

When the auto-newline feature is enabled (indicated by \"/la\" on the
mode line after the mode name) newlines are automatically inserted
after special characters such as brace, comma, semi-colon, and colon."
  (interactive "P")
  (setq c-auto-newline
	(c-calculate-state arg (and c-auto-newline c-electric-flag)))
  (if c-auto-newline (setq c-electric-flag t))
  (c-update-modeline)
  (c-keep-region-active))

(defalias 'c-toggle-auto-state 'c-toggle-auto-newline)
(make-obsolete 'c-toggle-auto-state 'c-toggle-auto-newline "22.1")

(defun c-toggle-hungry-state (&optional arg)
  "Toggle hungry-delete-key feature.
Optional numeric ARG, if supplied, turns on hungry-delete when
positive, turns it off when negative, and just toggles it when zero or
left out.

When the hungry-delete-key feature is enabled (indicated by \"/h\" on
the mode line after the mode name) the delete key gobbles all preceding
whitespace in one fell swoop."
  (interactive "P")
  (setq c-hungry-delete-key (c-calculate-state arg c-hungry-delete-key))
  (c-update-modeline)
  (c-keep-region-active))

(defun c-toggle-auto-hungry-state (&optional arg)
  "Toggle auto-newline and hungry-delete-key features.
Optional numeric ARG, if supplied, turns on auto-newline and
hungry-delete when positive, turns them off when negative, and just
toggles them when zero or left out.

See `c-toggle-auto-newline' and `c-toggle-hungry-state' for details."
  (interactive "P")
  (setq c-auto-newline (c-calculate-state arg c-auto-newline))
  (setq c-hungry-delete-key (c-calculate-state arg c-hungry-delete-key))
  (c-update-modeline)
  (c-keep-region-active))

(defun c-toggle-electric-state (&optional arg)
  "Toggle the electric indentation feature.
Optional numeric ARG, if supplied, turns on electric indentation when
positive, turns it off when negative, and just toggles it when zero or
left out."
  (interactive "P")
  (setq c-electric-flag (c-calculate-state arg c-electric-flag))
  (c-update-modeline)
  (when (fboundp 'electric-indent-local-mode) ; Emacs 24.4 or later.
    (electric-indent-local-mode (if c-electric-flag 1 0)))
  (c-keep-region-active))

(defun c-toggle-comment-style (&optional arg)
  "Toggle the comment style between block and line comments.
Optional numeric ARG, if supplied, switches to block comment
style when positive, to line comment style when negative, and
just toggles it when zero or left out.

This action does nothing when the mode only has one comment style."
  (interactive "P")
  (setq c-block-comment-flag
	(cond
	 ((and c-line-comment-starter c-block-comment-starter)
	  (c-calculate-state arg c-block-comment-flag))
	 (c-line-comment-starter nil)
	 (t t)))
  (setq comment-start
	(concat (if c-block-comment-flag
		    c-block-comment-starter
		  c-line-comment-starter)
		" "))
  (setq comment-end
	(if c-block-comment-flag
	    (concat " " c-block-comment-ender)
	  ""))
  ;; If necessary, invert the sense of fontification of wrong style comments.
  (when (and c-mark-wrong-style-of-comment
	     font-lock-mode
	     c-block-comment-starter
	     c-block-comment-ender)
    (save-excursion
      (save-restriction
	(widen)
	(goto-char (point-min))
	(c-font-lock-flush (point-min) (point-max)))))
  (c-update-modeline)
  (c-keep-region-active))

\f
;; Electric keys

(defun c-electric-backspace (arg)
  "Delete the preceding character or whitespace.
If `c-hungry-delete-key' is non-nil (indicated by \"/h\" on the mode
line) then all preceding whitespace is consumed.  If however a prefix
argument is supplied, or `c-hungry-delete-key' is nil, or point is
inside a literal then the function in the variable
`c-backspace-function' is called."
  (interactive "*P")
  (if (c-save-buffer-state ()
	(or (not c-hungry-delete-key)
	    arg
	    (c-in-literal)))
      (funcall c-backspace-function (prefix-numeric-value arg))
    (c-hungry-delete-backwards)))

(defun c-hungry-delete-backwards ()
  "Delete the preceding character or all preceding whitespace
back to the previous non-whitespace character.
See also \\[c-hungry-delete-forward]."
  (interactive)
  (let ((here (point)))
    (c-skip-ws-backward)
    (if (/= (point) here)
	(delete-region (point) here)
      (funcall c-backspace-function 1))))

(defalias 'c-hungry-backspace 'c-hungry-delete-backwards)

(defun c-electric-delete-forward (arg)
  "Delete the following character or whitespace.
If `c-hungry-delete-key' is non-nil (indicated by \"/h\" on the mode
line) then all following whitespace is consumed.  If however a prefix
argument is supplied, or `c-hungry-delete-key' is nil, or point is
inside a literal then the function in the variable `c-delete-function'
is called."
  (interactive "*P")
  (if (c-save-buffer-state ()
	(or (not c-hungry-delete-key)
	    arg
	    (c-in-literal)))
      (funcall c-delete-function (prefix-numeric-value arg))
    (c-hungry-delete-forward)))

(defun c-hungry-delete-forward ()
  "Delete the following character or all following whitespace
up to the next non-whitespace character.
See also \\[c-hungry-delete-backwards]."
  (interactive)
  (let ((here (point)))
    (c-skip-ws-forward)
    (if (/= (point) here)
	(delete-region (point) here)
      (funcall c-delete-function 1))))

;; This function is only used in XEmacs.
(defun c-electric-delete (arg)
  "Deletes preceding or following character or whitespace.
This function either deletes forward as `c-electric-delete-forward' or
backward as `c-electric-backspace', depending on the configuration: If
the function `delete-forward-p' is defined and returns non-nil, it
deletes forward.  Otherwise it deletes backward.

Note: This is the way in XEmacs to choose the correct action for the
[delete] key, whichever key that means.  Other flavors don't use this
function to control that."
  (interactive "*P")
  (if (and (fboundp 'delete-forward-p)
	   (delete-forward-p))
      (c-electric-delete-forward arg)
    (c-electric-backspace arg)))

;; This function is only used in XEmacs.
(defun c-hungry-delete ()
  "Delete a non-whitespace char, or all whitespace up to the next non-whitespace char.
The direction of deletion depends on the configuration: If the
function `delete-forward-p' is defined and returns non-nil, it deletes
forward using `c-hungry-delete-forward'.  Otherwise it deletes
backward using `c-hungry-backspace'.

Note: This is the way in XEmacs to choose the correct action for the
[delete] key, whichever key that means.  Other flavors don't use this
function to control that."
  (interactive)
  (if (and (fboundp 'delete-forward-p)
	   (delete-forward-p))
      (c-hungry-delete-forward)
    (c-hungry-delete-backwards)))

(defvar c--unsafe-post-self-insert-hook-functions
  '(electric-pair-post-self-insert-function)
    "Known unsafe functions when members of `post-self-insert-hook' in CC Mode")

(defun c--call-post-self-insert-hook-more-safely-1 ()
  ;; Call post-self-insert-hook, having removed from `post-self-insert-hook'
  ;; functions known not to be safe to CC Mode.  The result is of no
  ;; significance.  Note that the hook call is NOT absolutely safe.
  (let ((src post-self-insert-hook)
	dest)
    (while src
      (cond
       ((memq (car src) c--unsafe-post-self-insert-hook-functions))
       ((eq (car src) t)
	(let ((src (default-value 'post-self-insert-hook)))
	  (while src
	    (unless (memq (car src) c--unsafe-post-self-insert-hook-functions)
	      (push (car src) dest))
	    (setq src (cdr src)))))
       (t (push (car src) dest)))
      (setq src (cdr src)))
    (mapc #'funcall (nreverse dest)))) ; Preserve the order of the functions.

(defmacro c--call-post-self-insert-hook-more-safely ()
  ;; Call post-self-insert-hook, if such exists.  See comment for
  ;; `c--call-post-self-insert-hook-more-safely-1'.
  (if (boundp 'post-self-insert-hook)
      '(c--call-post-self-insert-hook-more-safely-1)
    '(progn)))

(defun c-electric-pound (arg)
  "Insert a \"#\".
If `c-electric-flag' is set, handle it specially according to the variable
`c-electric-pound-behavior'.  If a numeric ARG is supplied, or if point is
inside a literal or a macro, nothing special happens."
  (interactive "*P")
  (if (c-save-buffer-state ()
	(or arg
	    (not c-electric-flag)
	    (not (memq 'alignleft c-electric-pound-behavior))
	    (save-excursion
	      (skip-chars-backward " \t")
	      (not (bolp)))
	    (save-excursion
	      (and (= (forward-line -1) 0)
		   (progn (end-of-line)
			  (eq (char-before) ?\\))))
	    (c-in-literal)))
      ;; do nothing special
      (let (post-self-insert-hook)	; Disable random functionality.
	(self-insert-command (prefix-numeric-value arg)))
    ;; place the pound character at the left edge
    (let ((pos (- (point-max) (point)))
	  (bolp (bolp)))
      (beginning-of-line)
      (delete-horizontal-space)
      (insert (c-last-command-char))
      (and (not bolp)
	   (goto-char (- (point-max) pos)))
      ))
  (c--call-post-self-insert-hook-more-safely))

(defun c-point-syntax ()
  ;; Return the syntactic context of the construct at point.  (This is NOT
  ;; nec. the same as the s.c. of the line point is on).  N.B. This won't work
  ;; between the `#' of a cpp thing and what follows (see c-opt-cpp-prefix).
  (c-save-buffer-state (;; shut this up too
	(c-echo-syntactic-information-p nil)
	syntax)
    (c-tentative-buffer-changes
      ;; insert a newline to isolate the construct at point for syntactic
      ;; analysis.
      (insert-char ?\n 1)
      ;; In AWK (etc.) or in a macro, make sure this CR hasn't changed
      ;; the syntax.  (There might already be an escaped NL there.)
      (when (or
	     (save-excursion
	       (c-skip-ws-backward (c-point 'bopl))
	       (c-at-vsemi-p))
	     (let ((pt (point)))
	       (save-excursion
		 (backward-char)
		 (and (c-beginning-of-macro)
		      (progn (c-end-of-macro)
			     (< (point) pt))))))
	(backward-char)
	(insert-char ?\\ 1)
	(forward-char))
      (let ((c-syntactic-indentation-in-macros t)
	    (c-auto-newline-analysis t))
	;; Turn on syntactic macro analysis to help with auto
	;; newlines only.
	(setq syntax (c-guess-basic-syntax))
	nil))
    syntax))

(defun c-brace-newlines (syntax)
  ;; A brace stands at point.  SYNTAX is the syntactic context of this brace
  ;; (not necessarily the same as the S.C. of the line it is on).  Return
  ;; NEWLINES, the list containing some combination of the symbols `before'
  ;; and `after' saying where newlines should be inserted.
  (c-save-buffer-state
      ((syms
	;; This is the list of brace syntactic symbols that can hang.
	;; If any new ones are added to c-offsets-alist, they should be
	;; added here as well.
	;;
	;; The order of this list is important; if SYNTAX has several
	;; elements, the element that "wins" is the earliest in SYMS.
	'(arglist-cont-nonempty		; e.g. an array literal.
		     class-open class-close defun-open defun-close
		     inline-open inline-close
		     brace-list-open brace-list-close
		     brace-list-intro brace-entry-open
		     block-open block-close
		     substatement-open statement-case-open
		     extern-lang-open extern-lang-close
		     namespace-open namespace-close
		     module-open module-close
		     composition-open composition-close
		     inexpr-class-open inexpr-class-close
		     ;; `statement-cont' is here for the case with a brace
		     ;; list opener inside a statement.  C.f. CASE B.2 in
		     ;; `c-guess-continued-construct'.
		     statement-cont))
       ;; shut this up too
       (c-echo-syntactic-information-p nil)
       symb-newlines)		     ; e.g. (substatement-open . (after))

    (setq symb-newlines
	  ;; Do not try to insert newlines around a special
	  ;; (Pike-style) brace list.
	  (if (and c-special-brace-lists
		   (save-excursion
		     (c-safe (if (= (char-before) ?{)
				 (forward-char -1)
			       (c-forward-sexp -1))
			     (c-looking-at-special-brace-list))))
	      nil
	    ;; Seek the matching entry in c-hanging-braces-alist.
	    (or (c-lookup-lists
		 syms
		 ;; Substitute inexpr-class and class-open or
		 ;; class-close with inexpr-class-open or
		 ;; inexpr-class-close.
		 (if (assq 'inexpr-class syntax)
		     (cond ((assq 'class-open syntax)
			    '((inexpr-class-open)))
			   ((assq 'class-close syntax)
			    '((inexpr-class-close)))
			   (t syntax))
		   syntax)
		 c-hanging-braces-alist)
		'(ignore before after)))) ; Default, when not in c-h-b-l.

    ;; If syntax is a function symbol, then call it using the
    ;; defined semantics.
    (if (and (not (consp (cdr symb-newlines)))
	     (functionp (cdr symb-newlines)))
	(let ((c-syntactic-context syntax))
	  (funcall (cdr symb-newlines)
		   (car symb-newlines)
		   (point)))
      (cdr symb-newlines))))

(defun c-try-one-liner ()
  ;; Point is just after a newly inserted }.  If the non-whitespace
  ;; content of the braces is a single line of code, compact the whole
  ;; construct to a single line, if this line isn't too long.  The Right
  ;; Thing is done with comments.
  ;;
  ;; Point will be left after the }, regardless of whether the clean-up is
  ;; done.  Return NON-NIL if the clean-up happened, NIL if it didn't.

  (let ((here (point))
	(pos (- (point-max) (point)))
	mbeg1 mend1 mbeg4 mend4
	eol-col cmnt-pos cmnt-col cmnt-gap)

    (when
	(save-excursion
	  (save-restriction
	    ;; Avoid backtracking over a very large block.  The one we
	    ;; deal with here can never be more than three lines.
	    (narrow-to-region (save-excursion
				(forward-line -2)
				(point))
			      (point))
	    (and (c-safe (c-backward-sexp))
		 (progn
		   (forward-char)
		   (narrow-to-region (point) (1- here)) ; innards of {.}
		   (looking-at
		    (cc-eval-when-compile
		      (concat
		       "\\("		; (match-beginning 1)
		       "[ \t]*\\([\r\n][ \t]*\\)?" ; WS with opt. NL
		       "\\)"		; (match-end 1)
		       "[^ \t\r\n]+\\([ \t]+[^ \t\r\n]+\\)*" ; non-WS
		       "\\("		; (match-beginning 4)
		       "[ \t]*\\([\r\n][ \t]*\\)?" ; WS with opt. NL
		       "\\)\\'")))))))	; (match-end 4) at EOB.

      (if (c-tentative-buffer-changes
	    (setq mbeg1 (match-beginning 1) mend1 (match-end 1)
		  mbeg4 (match-beginning 4) mend4 (match-end 4))
	    (backward-char)		; back over the `}'
	    (save-excursion
	      (setq cmnt-pos (and (c-backward-single-comment)
				  (- (point) (- mend1 mbeg1)))))
	    (delete-region mbeg4 mend4)
	    (delete-region mbeg1 mend1)
	    (setq eol-col (save-excursion (end-of-line) (current-column)))

	    ;; Necessary to put the closing brace before any line
	    ;; oriented comment to keep it syntactically significant.
	    ;; This isn't necessary for block comments, but the result
	    ;; looks nicer anyway.
	    (when cmnt-pos
	      (delete-char 1)		; the `}' has blundered into a comment
	      (goto-char cmnt-pos)
	      (setq cmnt-col (1+ (current-column)))
	      (setq cmnt-pos (1+ cmnt-pos)) ; we're inserting a `}'
	      (c-skip-ws-backward)
	      (insert-char ?\} 1)	; reinsert the `}' before the comment.
	      (setq cmnt-gap (- cmnt-col (current-column)))
	      (when (zerop cmnt-gap)
		(insert-char ?\  1)	; Put a space before a bare comment.
		(setq cmnt-gap 1)))

	    (or (null c-max-one-liner-length)
		(zerop c-max-one-liner-length)
		(<= eol-col c-max-one-liner-length)
		;; Can we trim space before comment to make the line fit?
		(and cmnt-gap
		     (< (- eol-col cmnt-gap) c-max-one-liner-length)
		     (progn (goto-char cmnt-pos)
			    (backward-delete-char-untabify
			     (- eol-col c-max-one-liner-length))
			    t))))
	  (goto-char (- (point-max) pos))))))

(defun c-do-brace-electrics (before after)
  ;; Point is just after a brace.  Indent the various lines, add any required
  ;; auto newlines, and apply pertinent clean ups.  It is assumed that the
  ;; caller has checked that point is at EOL if need be, and that the brace is
  ;; not in a comment or string, and suchlike.
  ;;
  ;; BEFORE and AFTER qualify the newlines required before and after the
  ;; brace as follows:
  ;; If
  ;;  o - nil: insert a newline or not according to `c-hanging-braces-alist'.
  ;;  o - 'ignore: don't insert a newline.
  ;;  o - 'assume: insert a newline.
  ;;
  ;; The return value has no significance.
  (let (;; shut this up too
	(c-echo-syntactic-information-p nil)
	newlines
	ln-syntax br-syntax syntax)  ; Syntactic context of the original line,
					; of the brace itself, of the line the
					; brace ends up on.
    (c-save-buffer-state ((c-syntactic-indentation-in-macros t)
			  (c-auto-newline-analysis t))
      (setq ln-syntax (c-guess-basic-syntax)))
    (if c-syntactic-indentation
	(c-indent-line ln-syntax))

    (when c-auto-newline
      (backward-char)
      (setq br-syntax (c-point-syntax)
	    newlines (c-brace-newlines br-syntax))

      ;; Insert the BEFORE newline, if wanted, and reindent the newline.
      (if (or (and (null before) (memq 'before newlines)
		   (> (current-column) (current-indentation)))
	      (eq before 'assume))
	  (if c-syntactic-indentation
	      ;; Only a plain newline for now - it's indented
	      ;; after the cleanups when the line has its final
	      ;; appearance.
	      (newline)
	    (c-newline-and-indent)))
      (forward-char)

      ;; `syntax' is the syntactic context of the line which ends up
      ;; with the brace on it.
      (setq syntax (if (memq 'before newlines) br-syntax ln-syntax))

      ;; Do all appropriate clean ups
      (let ((here (point))
	    (pos (- (point-max) (point)))
	    mbeg mend
	    )

	;; `}': clean up empty defun braces
	(when (c-save-buffer-state ()
		(and (memq 'empty-defun-braces c-cleanup-list)
		     (eq (c-last-command-char) ?\})
		     (c-intersect-lists '(defun-close class-close inline-close)
					syntax)
		     (progn
		       (forward-char -1)
		       (c-skip-ws-backward)
		       (eq (char-before) ?\{))
		     ;; make sure matching open brace isn't in a comment
		     (not (c-in-literal))))
	  (delete-region (point) (1- here))
	  (setq here (- (point-max) pos)))
	(goto-char here)

	;; `}': compact to a one-liner defun?
	(save-match-data
	  (when
	      (and (eq (c-last-command-char) ?\})
		   (memq 'one-liner-defun c-cleanup-list)
		   (c-intersect-lists '(defun-close) syntax)
		   (c-try-one-liner))
	    (setq here (- (point-max) pos))))

	;; `{': clean up brace-else-brace and brace-elseif-brace
	(when (eq (c-last-command-char) ?\{)
	  (cond
	   ((and (memq 'brace-else-brace c-cleanup-list)
		 (re-search-backward
		  (concat "}"
			  "\\([ \t\n]\\|\\\\\n\\)*"
			  "else"
			  "\\([ \t\n]\\|\\\\\n\\)*"
			  "{"
			  "\\=")
		  nil t))
	    (delete-region (match-beginning 0) (match-end 0))
	    (insert-and-inherit "} else {"))
	   ((and (memq 'brace-elseif-brace c-cleanup-list)
		 (progn
		   (goto-char (1- here))
		   (setq mend (point))
		   (c-skip-ws-backward)
		   (setq mbeg (point))
		   (eq (char-before) ?\)))
		 (zerop (c-save-buffer-state nil (c-backward-token-2 1 t)))
		 (eq (char-after) ?\()
		 (re-search-backward
		  (concat "}"
			  "\\([ \t\n]\\|\\\\\n\\)*"
			  "else"
			  "\\([ \t\n]\\|\\\\\n\\)+"
			  "if"
			  "\\([ \t\n]\\|\\\\\n\\)*"
			  "\\=")
		  nil t))
	    (delete-region mbeg mend)
	    (goto-char mbeg)
	    (insert ?\ ))))

	(goto-char (- (point-max) pos))

	;; Indent the line after the cleanups since it might
	;; very well indent differently due to them, e.g. if
	;; c-indent-one-line-block is used together with the
	;; one-liner-defun cleanup.
	(when c-syntactic-indentation
	  (c-indent-line)))

      ;; does a newline go after the brace?
      (if (or (and (null after) (memq 'after newlines))
	      (eq after 'assume))
	  (c-newline-and-indent)))))

(defun c-electric-brace (arg)
  "Insert a brace.

If `c-electric-flag' is non-nil, the brace is not inside a literal and a
numeric ARG hasn't been supplied, the command performs several electric
actions:

\(a) If the auto-newline feature is turned on (indicated by \"/la\" on
the mode line) newlines are inserted before and after the brace as
directed by the settings in `c-hanging-braces-alist'.

\(b) Any auto-newlines are indented.  The original line is also
reindented unless `c-syntactic-indentation' is nil.

\(c) If auto-newline is turned on, various newline cleanups based on the
settings of `c-cleanup-list' are done."

  (interactive "*P")
  (let (safepos literal
	;; We want to inhibit blinking the paren since this would be
	;; most disruptive.  We'll blink it ourselves later on.
	(old-blink-paren blink-paren-function)
	blink-paren-function case-fold-search
	(at-eol (looking-at "[ \t]*\\\\?$"))
	(active-region (and (fboundp 'use-region-p) (use-region-p)))
	got-pair-} electric-pair-deletion)

    (c-save-buffer-state ()
      (setq safepos (c-safe-position (point) (c-parse-state))
	    literal (c-in-literal safepos)))

    ;; Insert the brace.  Note that expand-abbrev might reindent
    ;; the line here if there's a preceding "else" or something.
    (let (post-self-insert-hook) ; the only way to get defined functionality
				 ; from `self-insert-command'.
      (self-insert-command (prefix-numeric-value arg)))

    ;; Emulate `electric-pair-mode'.
    (when (and (boundp 'electric-pair-mode)
	       electric-pair-mode)
      (let ((size (buffer-size))
	    (c-in-electric-pair-functionality t)
	    post-self-insert-hook)
	(electric-pair-post-self-insert-function)
	(setq got-pair-} (and at-eol
			      (eq (c-last-command-char) ?{)
			      (eq (char-after) ?}))
	      electric-pair-deletion (< (buffer-size) size))))

    ;; Perform any required CC Mode electric actions.
    (cond
     ((or literal arg (not c-electric-flag) active-region))
     ((not at-eol)
      (c-indent-line))
     (electric-pair-deletion
      (c-indent-line)
      (c-do-brace-electrics 'ignore nil))
     (t (c-do-brace-electrics nil nil)
	(when got-pair-}
	  (save-excursion
	    (forward-char)
	    (c-do-brace-electrics 'assume 'ignore))
	  (c-indent-line))))

    ;; blink the paren
    (and (eq (c-last-command-char) ?\})
	 (not executing-kbd-macro)
	 old-blink-paren
	 (save-excursion
	   (c-save-buffer-state nil
	     (c-backward-syntactic-ws safepos))
	   (funcall old-blink-paren)))
    (c--call-post-self-insert-hook-more-safely)))

(defun c-electric-slash (arg)
  "Insert a slash character.

If the slash is inserted immediately after the comment prefix in a c-style
comment, the comment might get closed by removing whitespace and possibly
inserting a \"*\".  See the variable `c-cleanup-list'.

Indent the line as a comment, if:

  1. The slash is second of a \"//\" line oriented comment introducing
     token and we are on a comment-only-line, or

  2. The slash is part of a \"*/\" token that closes a block oriented
     comment.

If a numeric ARG is supplied, point is inside a literal, or
`c-syntactic-indentation' is nil or `c-electric-flag' is nil, indentation
is inhibited."
  (interactive "*P")
  (let ((literal (c-save-buffer-state () (c-in-literal)))
	indentp
	;; shut this up
	(c-echo-syntactic-information-p nil))

    ;; comment-close-slash cleanup?  This DOESN'T need `c-electric-flag' or
    ;; `c-syntactic-indentation' set.
    (when (and (not arg)
	       (eq literal 'c)
	       (memq 'comment-close-slash c-cleanup-list)
	       (eq (c-last-command-char) ?/)
	       (looking-at (concat "[ \t]*\\("
				   (regexp-quote comment-end) "\\)?$"))
	; (eq c-block-comment-ender "*/") ; C-style comments ALWAYS end in */
	       (save-excursion
		 (save-restriction
		   (narrow-to-region (point-min) (point))
		   (back-to-indentation)
		   (looking-at (concat c-current-comment-prefix "[ \t]*$")))))
      (delete-region (progn (forward-line 0) (point))
		     (progn (end-of-line) (point)))
      (insert-char ?* 1)) ; the / comes later. ; Do I need a t (retain sticky properties) here?

    (setq indentp (and (not arg)
		       c-syntactic-indentation
		       c-electric-flag
		       (eq (c-last-command-char) ?/)
		       (eq (char-before) (if literal ?* ?/))))
    (let (post-self-insert-hook)	; Disable random functionality.
      (self-insert-command (prefix-numeric-value arg)))
    (if indentp
	(indent-according-to-mode))
    (c--call-post-self-insert-hook-more-safely)))

(defun c-electric-star (arg)
  "Insert a star character.
If `c-electric-flag' and `c-syntactic-indentation' are both non-nil, and
the star is the second character of a C style comment starter on a
comment-only-line, indent the line as a comment.  If a numeric ARG is
supplied, point is inside a literal, or `c-syntactic-indentation' is nil,
this indentation is inhibited."

  (interactive "*P")
  (let (post-self-insert-hook)		; Disable random functionality.
    (self-insert-command (prefix-numeric-value arg)))
  ;; if we are in a literal, or if arg is given do not reindent the
  ;; current line, unless this star introduces a comment-only line.
  (if (c-save-buffer-state ()
	(and c-syntactic-indentation
	     c-electric-flag
	     (not arg)
	     (eq (c-in-literal) 'c)
	     (eq (char-before) ?*)
	     (save-excursion
	       (forward-char -1)
	       (skip-chars-backward "*")
	       (if (eq (char-before) ?/)
		   (forward-char -1))
	       (skip-chars-backward " \t")
	       (bolp))))
      (let (c-echo-syntactic-information-p) ; shut this up
	(indent-according-to-mode))
    )
  (c--call-post-self-insert-hook-more-safely))

(defun c-electric-semi&comma (arg)
  "Insert a comma or semicolon.

If `c-electric-flag' is non-nil, point isn't inside a literal and a
numeric ARG hasn't been supplied, the command performs several electric
actions:

\(a) When the auto-newline feature is turned on (indicated by \"/la\" on
the mode line) a newline might be inserted.  See the variable
`c-hanging-semi&comma-criteria' for how newline insertion is determined.

\(b) Any auto-newlines are indented.  The original line is also
reindented unless `c-syntactic-indentation' is nil.

\(c) If auto-newline is turned on, a comma following a brace list or a
semicolon following a defun might be cleaned up, depending on the
settings of `c-cleanup-list'."
  (interactive "*P")
  (let* (lim literal c-syntactic-context
	 (here (point))
	 ;; shut this up
	 (c-echo-syntactic-information-p nil))

    (c-save-buffer-state ()
      (setq lim (c-most-enclosing-brace (c-parse-state))
	    literal (c-in-literal lim)))

    (let (post-self-insert-hook)	; Disable random functionality.
      (self-insert-command (prefix-numeric-value arg)))

    (if (and c-electric-flag (not literal) (not arg))
	;; do all cleanups and newline insertions if c-auto-newline is on.
	(if (or (not c-auto-newline)
		(not (looking-at "[ \t]*\\\\?$")))
	    (if c-syntactic-indentation
		(c-indent-line))
	  ;; clean ups: list-close-comma or defun-close-semi
	  (let ((pos (- (point-max) (point))))
	    (if (c-save-buffer-state ()
		  (and (or (and
			    (eq (c-last-command-char) ?,)
			    (memq 'list-close-comma c-cleanup-list))
			   (and
			    (eq (c-last-command-char) ?\;)
			    (memq 'defun-close-semi c-cleanup-list)))
		       (progn
			 (forward-char -1)
			 (c-skip-ws-backward)
			 (eq (char-before) ?}))
		       ;; make sure matching open brace isn't in a comment
		       (not (c-in-literal lim))))
		(delete-region (point) here))
	    (goto-char (- (point-max) pos)))
	  ;; reindent line
	  (when c-syntactic-indentation
	    (setq c-syntactic-context (c-guess-basic-syntax))
	    (c-indent-line c-syntactic-context))
	  ;; check to see if a newline should be added
	  (let ((criteria c-hanging-semi&comma-criteria)
		answer add-newline-p)
	    (while criteria
	      (setq answer (funcall (car criteria)))
	      ;; only nil value means continue checking
	      (if (not answer)
		  (setq criteria (cdr criteria))
		(setq criteria nil)
		;; only 'stop specifically says do not add a newline
		(setq add-newline-p (not (eq answer 'stop)))
		))
	    (if add-newline-p
		(c-newline-and-indent)))))
    (c--call-post-self-insert-hook-more-safely)))

(defun c-electric-colon (arg)
  "Insert a colon.

If `c-electric-flag' is non-nil, the colon is not inside a literal and a
numeric ARG hasn't been supplied, the command performs several electric
actions:

\(a) If the auto-newline feature is turned on (indicated by \"/la\" on
the mode line) newlines are inserted before and after the colon based on
the settings in `c-hanging-colons-alist'.

\(b) Any auto-newlines are indented.  The original line is also
reindented unless `c-syntactic-indentation' is nil.

\(c) If auto-newline is turned on, whitespace between two colons will be
\"cleaned up\" leaving a scope operator, if this action is set in
`c-cleanup-list'."

  (interactive "*P")
  (let* ((bod (c-point 'bod))
	 (literal (c-save-buffer-state () (c-in-literal bod)))
	 newlines is-scope-op
	 ;; shut this up
	 (c-echo-syntactic-information-p nil))
    (let (post-self-insert-hook)	; Disable random functionality.
      (self-insert-command (prefix-numeric-value arg)))
    ;; Any electric action?
    (if (and c-electric-flag (not literal) (not arg))
	;; Unless we're at EOL, only re-indentation happens.
	(if (not (looking-at "[ \t]*\\\\?$"))
	    (if c-syntactic-indentation
		(indent-according-to-mode))

	  ;; scope-operator clean-up?
	  (let ((pos (- (point-max) (point)))
		(here (point)))
	    (if (c-save-buffer-state ()	; Why do we need this? [ACM, 2003-03-12]
		  (and c-auto-newline
		       (memq 'scope-operator c-cleanup-list)
		       (eq (char-before) ?:)
		       (progn
			 (forward-char -1)
			 (c-skip-ws-backward)
			 (eq (char-before) ?:))
		       (not (c-in-literal))
		       (not (eq (char-after (- (point) 2)) ?:))))
		(progn
		  (delete-region (point) (1- here))
		  (setq is-scope-op t)))
	    (goto-char (- (point-max) pos)))

	  ;; indent the current line if it's done syntactically.
	  (if c-syntactic-indentation
	      ;; Cannot use the same syntax analysis as we find below,
	      ;; since that's made with c-syntactic-indentation-in-macros
	      ;; always set to t.
	      (indent-according-to-mode))

	  ;; Calculate where, if anywhere, we want newlines.
	  (c-save-buffer-state
	      ((c-syntactic-indentation-in-macros t)
	       (c-auto-newline-analysis t)
	       ;; Turn on syntactic macro analysis to help with auto newlines
	       ;; only.
	       (syntax (c-guess-basic-syntax))
	       (elem syntax))
	    ;; Translate substatement-label to label for this operation.
	    (while elem
	      (if (eq (car (car elem)) 'substatement-label)
		  (setcar (car elem) 'label))
	      (setq elem (cdr elem)))
	    ;; some language elements can only be determined by checking
	    ;; the following line.  Let's first look for ones that can be
	    ;; found when looking on the line with the colon
	    (setq newlines
		  (and c-auto-newline
		       (or (c-lookup-lists '(case-label label access-label)
					   syntax c-hanging-colons-alist)
			   (c-lookup-lists '(member-init-intro inher-intro)
					   (progn
					     (insert ?\n)
					     (unwind-protect
						 (c-guess-basic-syntax)
					       (delete-char -1)))
					   c-hanging-colons-alist)))))
	  ;; does a newline go before the colon?  Watch out for already
	  ;; non-hung colons.  However, we don't unhang them because that
	  ;; would be a cleanup (and anti-social).
	  (if (and (memq 'before newlines)
		   (not is-scope-op)
		   (save-excursion
		     (skip-chars-backward ": \t")
		     (not (bolp))))
	      (let ((pos (- (point-max) (point))))
		(forward-char -1)
		(c-newline-and-indent)
		(goto-char (- (point-max) pos))))
	  ;; does a newline go after the colon?
	  (if (and (memq 'after (cdr-safe newlines))
		   (not is-scope-op))
	      (c-newline-and-indent))))
    (c--call-post-self-insert-hook-more-safely)))

(defun c-electric-lt-gt (arg)
  "Insert a \"<\" or \">\" character.
If the current language uses angle bracket parens (e.g. template
arguments in C++), try to find out if the inserted character is a
paren and give it paren syntax if appropriate.

If `c-electric-flag' and `c-syntactic-indentation' are both non-nil, the
line will be reindented if the inserted character is a paren or if it
finishes a C++ style stream operator in C++ mode.  Exceptions are when a
numeric argument is supplied, or the point is inside a literal."

  (interactive "*P")
  (let ((literal (c-save-buffer-state () (c-in-literal)))
	template-delim include-delim
	(c-echo-syntactic-information-p nil)
	final-pos found-delim case-fold-search)

    (let (post-self-insert-hook)	; Disable random functionality.
      (self-insert-command (prefix-numeric-value arg)))
    (setq final-pos (point))

;;;; 2010-01-31: There used to be code here to put a syntax-table text
;;;; property on the new < or > and its mate (if any) when they are template
;;;; parens.  This is now done in an after-change function.

    (when (and (not arg) (not literal))
      ;; Have we got a delimiter on a #include directive?
      (beginning-of-line)
      (setq include-delim
	    (and
	     (looking-at c-cpp-include-key)
	     (if (eq (c-last-command-char) ?<)
		 (eq (match-end 0) (1- final-pos))
	       (goto-char (1- final-pos))
	       (skip-chars-backward "^<>" (c-point 'bol))
	       (eq (char-before) ?<))))
      (goto-char final-pos)

      ;; Indent the line if appropriate.
      (when (and c-electric-flag c-syntactic-indentation c-recognize-<>-arglists)
	(setq found-delim
	      (if (eq (c-last-command-char) ?<)
		  ;; If a <, basically see if it's got "template" before it .....
		  (or (and (progn
			     (backward-char)
			     (= (point)
				(progn (c-beginning-of-current-token) (point))))
			   (progn
			     (c-backward-token-2)
			     (looking-at c-opt-<>-sexp-key))
			   (setq template-delim t))
		      ;; ..... or is a C++ << operator.
		      (and (c-major-mode-is 'c++-mode)
			   (progn
			     (goto-char (1- final-pos))
			     (c-beginning-of-current-token)
			     (looking-at "<<"))
			   (>= (match-end 0) final-pos)))

		;; It's a >.  Either a template/generic terminator ...
		(or (and (c-get-char-property (1- final-pos) 'syntax-table)
			 (setq template-delim t))
		    ;; or a C++ >> operator.
		    (and (c-major-mode-is 'c++-mode)
			 (progn
			   (goto-char (1- final-pos))
			   (c-beginning-of-current-token)
			   (looking-at ">>"))
			 (>= (match-end 0) final-pos)))))
	(goto-char final-pos)

	(when found-delim
	  (indent-according-to-mode)))

      ;; On the off chance that < and > are configured as pairs in
      ;; electric-pair-mode.
      (when (and (boundp 'electric-pair-mode) electric-pair-mode
		 (or template-delim include-delim))
	(let (post-self-insert-hook)
	  (electric-pair-post-self-insert-function))))

    (when found-delim
      (when (and (eq (char-before) ?>)
		 (not executing-kbd-macro)
		 blink-paren-function)
	;; From now (2016-01-01), the syntax-table text properties on < and >
	;; are applied in an after-change function, not during redisplay.  Hence
	;; we no longer need to call (sit-for 0) for blink paren to work.
	(funcall blink-paren-function))))
  (c--call-post-self-insert-hook-more-safely))

(defun c-electric-paren (arg)
  "Insert a parenthesis.

If `c-syntactic-indentation' and `c-electric-flag' are both non-nil, the
line is reindented unless a numeric ARG is supplied, or the parenthesis
is inserted inside a literal.

Whitespace between a function name and the parenthesis may get added or
removed; see the variable `c-cleanup-list'.

Also, if `c-electric-flag' and `c-auto-newline' are both non-nil, some
newline cleanups are done if appropriate; see the variable `c-cleanup-list'."
  (interactive "*P")
  (let ((literal (c-save-buffer-state () (c-in-literal)))
	;; shut this up
	(c-echo-syntactic-information-p nil)
	case-fold-search)
    (let (post-self-insert-hook) ; The only way to get defined functionality
				 ; from `self-insert-command'.
      (self-insert-command (prefix-numeric-value arg)))

    (if (and (not arg) (not literal))
	(let* (;; We want to inhibit blinking the paren since this will
	       ;; be most disruptive.  We'll blink it ourselves
	       ;; afterwards.
	       (old-blink-paren blink-paren-function)
	       blink-paren-function)
	  (if (and c-syntactic-indentation c-electric-flag)
	      (indent-according-to-mode))

	  ;; If we're at EOL, check for new-line clean-ups.
	  (when (and c-electric-flag c-auto-newline
		     (looking-at "[ \t]*\\\\?$"))

	    ;; clean up brace-elseif-brace
	    (when
		(and (memq 'brace-elseif-brace c-cleanup-list)
		     (eq (c-last-command-char) ?\()
		     (re-search-backward
		      (concat "}"
			      "\\([ \t\n]\\|\\\\\n\\)*"
			      "else"
			      "\\([ \t\n]\\|\\\\\n\\)+"
			      "if"
			      "\\([ \t\n]\\|\\\\\n\\)*"
			      "("
			      "\\=")
		      nil t)
		     (not  (c-save-buffer-state () (c-in-literal))))
	      (delete-region (match-beginning 0) (match-end 0))
	      (insert-and-inherit "} else if ("))

	    ;; clean up brace-catch-brace
	    (when
		(and (memq 'brace-catch-brace c-cleanup-list)
		     (eq (c-last-command-char) ?\()
		     (re-search-backward
		      (concat "}"
			      "\\([ \t\n]\\|\\\\\n\\)*"
			      "catch"
			      "\\([ \t\n]\\|\\\\\n\\)*"
			      "("
			      "\\=")
		      nil t)
		     (not  (c-save-buffer-state () (c-in-literal))))
	      (delete-region (match-beginning 0) (match-end 0))
	      (insert-and-inherit "} catch (")))

	  ;; Apply `electric-pair-mode' stuff.
	  (when (and (boundp 'electric-pair-mode)
		     electric-pair-mode)
	    (let (post-self-insert-hook)
	      (electric-pair-post-self-insert-function)))

	  ;; Check for clean-ups at function calls.  These two DON'T need
	  ;; `c-electric-flag' or `c-syntactic-indentation' set.
	  ;; Point is currently just after the inserted paren.
	  (let (beg (end (1- (point))))
	    (cond

	     ;; space-before-funcall clean-up?
	     ((and (memq 'space-before-funcall c-cleanup-list)
		   (eq (c-last-command-char) ?\()
		   (save-excursion
		     (backward-char)
		     (skip-chars-backward " \t")
		     (setq beg (point))
		     (and (c-save-buffer-state () (c-on-identifier))
                          ;; Don't add a space into #define FOO()....
                          (not (and (c-beginning-of-macro)
                                    (c-forward-over-cpp-define-id)
                                    (eq (point) beg))))))
	      (save-excursion
		(delete-region beg end)
		(goto-char beg)
		(insert ?\ )))

	     ;; compact-empty-funcall clean-up?
	     ((c-save-buffer-state ()
		(and (memq 'compact-empty-funcall c-cleanup-list)
		     (eq (c-last-command-char) ?\))
		     (save-excursion
		       (c-safe (backward-char 2))
		       (when (looking-at "()")
			 (setq end (point))
			 (skip-chars-backward " \t")
			 (setq beg (point))
			 (c-on-identifier)))))
	      (delete-region beg end))))
	  (and (eq last-input-event ?\))
	       (not executing-kbd-macro)
	       old-blink-paren
	       (funcall old-blink-paren)))

      ;; Apply `electric-pair-mode' stuff inside a string or comment.
      (when (and (boundp 'electric-pair-mode) electric-pair-mode)
	(let (post-self-insert-hook)
	  (electric-pair-post-self-insert-function))))
    (c--call-post-self-insert-hook-more-safely)))

(defun c-electric-continued-statement ()
  "Reindent the current line if appropriate.

This function is used to reindent the line after a keyword which
continues an earlier statement is typed, e.g. an \"else\" or the
\"while\" in a do-while block.

The line is reindented if there is nothing but whitespace before the
keyword on the line, the keyword is not inserted inside a literal, and
`c-electric-flag' and `c-syntactic-indentation' are both non-nil."
  (let (;; shut this up
	(c-echo-syntactic-information-p nil))
    (when (c-save-buffer-state ()
	    (and c-electric-flag
		 c-syntactic-indentation
		 (not (eq (c-last-command-char) ?_))
		 (= (save-excursion
		      (skip-syntax-backward "w")
		      (point))
		    (c-point 'boi))
		 (not (c-in-literal (c-point 'bod)))))
      ;; Have to temporarily insert a space so that
      ;; c-guess-basic-syntax recognizes the keyword.  Follow the
      ;; space with a nonspace to avoid messing up any whitespace
      ;; sensitive meddling that might be done, e.g. by
      ;; `c-backslash-region'.
      (insert-and-inherit " x")
      (unwind-protect
	  (indent-according-to-mode)
	(delete-char -2)))))

(defun c-align-cpp-indent-to-body ()
  "Align a \"#pragma\" line under the previous line.
This function is intented for use as a member of `c-special-indent-hook'."
  (when (assq 'cpp-macro c-syntactic-context)
    (when
	(save-excursion
	  (save-match-data
	    (back-to-indentation)
	    (and
	     (looking-at (concat c-opt-cpp-symbol "[ \t]*\\([a-zA-Z0-9_]+\\)"))
	     (member (match-string-no-properties 1)
		     c-cpp-indent-to-body-directives))))
      (c-indent-line (delete '(cpp-macro) c-syntactic-context)))))

(defvar c-cpp-indent-to-body-flag nil)
;; Non-nil when CPP directives such as "#pragma" should be indented to under
;; the preceding statement.
(make-variable-buffer-local 'c-cpp-indent-to-body-flag)

(defun c-electric-pragma ()
  "Reindent the current line if appropriate.

This function is used to reindent a preprocessor line when the
symbol for the directive, typically \"pragma\", triggers this
function as a hook function of an abbreviation.

The \"#\" of the preprocessor construct is aligned under the
first anchor point of the line's syntactic context.

The line is reindented if the construct is not in a string or
comment, there is exactly one \"#\" contained in optional
whitespace before it on the current line, and `c-electric-flag'
and `c-syntactic-indentation' are both non-nil."
  (save-excursion
    (save-match-data
      (when
	  (and
	   c-cpp-indent-to-body-flag
	   c-electric-flag
	   c-syntactic-indentation
	   last-abbrev-location
	   c-opt-cpp-symbol		; "#" or nil.
	   (progn (back-to-indentation)
		  (looking-at (concat c-opt-cpp-symbol "[ \t]*")))
	   (>= (match-end 0) last-abbrev-location)
	   (not (c-literal-limits)))
	(c-indent-line (delete '(cpp-macro) (c-guess-basic-syntax)))))))

(defun c-add-indent-to-body-to-abbrev-table (d)
  ;; Create an abbreviation table entry for the directive D, and add it to the
  ;; current abbreviation table.  Existing abbreviation (e.g. for "else") do
  ;; not get overwritten.
  (when (and c-buffer-is-cc-mode
	     local-abbrev-table
	     (not (abbrev-symbol d local-abbrev-table)))
    (condition-case nil
	(define-abbrev local-abbrev-table d d 'c-electric-pragma 0 t)
      (wrong-number-of-arguments
       (define-abbrev local-abbrev-table d d 'c-electric-pragma)))))

(defun c-clear-stale-indent-to-body-abbrevs ()
  ;; Fill in this comment.  FIXME!!!
  (when (fboundp 'abbrev-get)
    (mapatoms (lambda (a)
		(when (and (abbrev-get a ':system) ; Preserve a user's abbrev!
			   (not (member (symbol-name a) c-std-abbrev-keywords))
			   (not (member (symbol-name a)
					c-cpp-indent-to-body-directives)))
		  (unintern a local-abbrev-table)))
	      local-abbrev-table)))

(defun c-toggle-cpp-indent-to-body (&optional arg)
  "Toggle the C preprocessor indent-to-body feature.
When enabled, preprocessor directives which are words in
`c-indent-to-body-directives' are indented as if they were statements.

Optional numeric ARG, if supplied, turns on the feature when positive,
turns it off when negative, and just toggles it when zero or
left out."
  (interactive "P")
  (setq c-cpp-indent-to-body-flag
	(c-calculate-state arg c-cpp-indent-to-body-flag))
  (if c-cpp-indent-to-body-flag
      (progn
	(c-clear-stale-indent-to-body-abbrevs)
	(mapc 'c-add-indent-to-body-to-abbrev-table
	      c-cpp-indent-to-body-directives)
	(add-hook 'c-special-indent-hook 'c-align-cpp-indent-to-body nil t))
    (remove-hook 'c-special-indent-hook 'c-align-cpp-indent-to-body t))
  (message "c-cpp-indent-to-body %sabled"
	   (if c-cpp-indent-to-body-flag "en" "dis")))

\f

(declare-function subword-forward "subword" (&optional arg))
(declare-function subword-backward "subword" (&optional arg))

(cond
 ((and (fboundp 'subword-mode) (not (fboundp 'c-subword-mode)))
  ;; Recent Emacsen come with their own subword support.  Use that.
  (define-obsolete-function-alias 'c-subword-mode 'subword-mode "24.3")
  (define-obsolete-variable-alias 'c-subword-mode 'subword-mode "24.3"))
 (t
  ;; Autoload directive for emacsen that doesn't have an older CC Mode
  ;; version in the dist.
  (autoload 'c-subword-mode "cc-subword"
    "Mode enabling subword movement and editing keys." t)))

(declare-function c-forward-subword "ext:cc-subword" (&optional arg))
(declare-function c-backward-subword "ext:cc-subword" (&optional arg))

;; "nomenclature" functions + c-scope-operator.
(defun c-forward-into-nomenclature (&optional arg)
  "Compatibility alias for `c-forward-subword'."
  (interactive "p")
  (if (fboundp 'subword-mode)
      (progn
        (require 'subword)
        (subword-forward arg))
    (require 'cc-subword)
    (c-forward-subword arg)))
(make-obsolete 'c-forward-into-nomenclature
               (if (fboundp 'subword-mode) 'subword-forward 'c-forward-subword)
               "23.2")

(defun c-backward-into-nomenclature (&optional arg)
  "Compatibility alias for `c-backward-subword'."
  (interactive "p")
  (if (fboundp 'subword-mode)
      (progn
        (require 'subword)
        (subword-backward arg))
    (require 'cc-subword)
    (c-backward-subword arg)))
(make-obsolete
 'c-backward-into-nomenclature
 (if (fboundp 'subword-mode) 'subword-backward 'c-backward-subword) "23.2")

(defun c-scope-operator ()
  "Insert a double colon scope operator at point.
No indentation or other \"electric\" behavior is performed."
  (interactive "*")
  (insert-and-inherit "::"))

\f
;; Movement (etc.) by defuns.
(defun c-in-function-trailer-p (&optional lim)
  ;; Return non-nil if point is between the closing brace and the semicolon of
  ;; a brace construct which needs a semicolon, e.g. within the "variables"
  ;; portion of a declaration like "struct foo {...} bar ;".
  ;;
  ;; Return the position of the main declaration.  Otherwise, return nil.
  ;; Point is assumed to be at the top level and outside of any macro or
  ;; literal.
  ;;
  ;; If LIM is non-nil, it is the bound on a the backward search for the
  ;; beginning of the declaration.
  ;;
  ;; This function might do hidden buffer changes.
  (and c-opt-block-decls-with-vars-key
       (save-excursion
	 (c-syntactic-skip-backward "^;}" lim)
	 (let ((eo-block (point))
	       bod)
	   (and (eq (char-before) ?\})
		(memq (car (c-beginning-of-decl-1 lim)) '(same previous))
		(setq bod (point))
		;; Look for struct or union or ...  If we find one, it might
		;; be the return type of a function, or the like.  Exclude
		;; this case.
		(c-syntactic-re-search-forward
		 (concat "[;=([{]\\|\\("
			 c-opt-block-decls-with-vars-key
			 "\\)")
		 eo-block t t t)
		(match-beginning 1)	; Is there a "struct" etc., somewhere?
		(not (eq (char-before) ?_))
		(c-syntactic-re-search-forward "[;=([{]" eo-block t t t)
		(eq (char-before) ?\{)
		;; Exclude the entire "struct {...}" being the type of a
		;; function being declared.
		(not
		 (and
		  (c-go-up-list-forward)
		  (eq (char-before) ?})
		  (progn (c-forward-syntactic-ws)
			 (c-syntactic-re-search-forward
			  "[;=([{]" nil t t t))
		  (eq (char-before) ?\()))
		bod)))))

(defun c-where-wrt-brace-construct ()
  ;; Determine where we are with respect to functions (or other brace
  ;; constructs, included in the term "function" in the rest of this comment).
  ;; Point is assumed to be outside any macro or literal.
  ;; This is used by c-\(beginning\|end\)-of-defun.
  ;;
  ;; Return one of these symbols:
  ;; at-header       : we're at the start of a function's header.
  ;; in-header       : we're inside a function's header, this extending right
  ;;                   up to the brace.  This bit includes any k&r declarations.
  ;; in-block        : we're inside a function's brace block.
  ;; in-trailer      : we're in the area between the "}" and ";" of something
  ;;                  like "struct foo {...} bar, baz;".
  ;; at-function-end : we're just after the closing brace (or semicolon) that
  ;;                   terminates the function.
  ;; outwith-function: we're not at or in any function.  Being inside a
  ;;                   non-brace construct also counts as 'outwith-function'.
  ;;
  ;; This function might do hidden buffer changes.
  (save-excursion
    (let* (kluge-start
	   decl-result brace-decl-p
	   (start (point))
	   (paren-state (c-parse-state))
	   (least-enclosing (c-least-enclosing-brace paren-state)))

      (cond
       ((and least-enclosing
	     (eq (char-after least-enclosing) ?\{))
	'in-block)
       ((c-in-function-trailer-p)
	'in-trailer)
       ((or (and (eq (char-before) ?\;)
		 (save-excursion
		   (backward-char)
		   (c-in-function-trailer-p)))
	    (and (not least-enclosing)
		 (consp paren-state)
		 (consp (car paren-state))
		 (eq start (cdar paren-state))
		 (or
		  (save-excursion
		    (c-forward-syntactic-ws)
		    (or (not (looking-at c-symbol-start))
			(looking-at c-keywords-regexp)))
		  (save-excursion
		    (goto-char (caar paren-state))
		    (c-beginning-of-decl-1)
		    (not (looking-at c-defun-type-name-decl-key))))))
	'at-function-end)
       (t
	;; Find the start of the current declaration.  NOTE: If we're in the
	;; variables after a "struct/eval" type block, we don't get to the
	;; real declaration here - we detect and correct for this later.

	;;If we're in the parameters' parens, move back out of them.
	(if least-enclosing (goto-char least-enclosing))
	;; Kluge so that c-beginning-of-decl-1 won't go back if we're already
	;; at a declaration.
	(if (or (and (eolp) (not (eobp))) ; EOL is matched by "\\s>"
		(not (looking-at
"\\([;#]\\|\\'\\|\\s(\\|\\s)\\|\\s\"\\|\\s\\\\|\\s$\\|\\s<\\|\\s>\\|\\s!\\)")))
	    (forward-char))
	(setq kluge-start (point))
	;; First approximation as to whether the current "header" we're in is
	;; one followed by braces.
	(setq brace-decl-p
	      (save-excursion
		(and (c-syntactic-re-search-forward "[;{]" nil t t)
		     (or (eq (char-before) ?\{)
			 (and c-recognize-knr-p
			      ;; Might have stopped on the
			      ;; ';' in a K&R argdecl.  In
			      ;; that case the declaration
			      ;; should contain a block.
			      (c-in-knr-argdecl))))))
	(setq decl-result
	      (car (c-beginning-of-decl-1
		    ;; NOTE: If we're in a K&R region, this might be the start
		    ;; of a parameter declaration, not the actual function.
		    ;; It might also leave us at a label or "label" like
		    ;; "private:".
		    (and least-enclosing ; LIMIT for c-b-of-decl-1
			 (c-safe-position least-enclosing paren-state)))))

	;; Has the declaration we've gone back to got braces?
	(if (or (eq decl-result 'label)
		(looking-at c-protection-key))
	    (setq brace-decl-p nil))

	(cond
	 ((or (eq decl-result 'label)	; e.g. "private:" or invalid syntax.
	      (= (point) kluge-start))	; might be BOB or unbalanced parens.
	  'outwith-function)
	 ((eq decl-result 'same)
	  (if brace-decl-p
	      (if (eq (point) start)
		  'at-header
		'in-header)
	    'outwith-function))
	 ((eq decl-result 'previous)
	  (if (and (not brace-decl-p)
		   (c-in-function-trailer-p))
	      'at-function-end
	    'outwith-function))
	 (t (error
	     "c-where-wrt-brace-construct: c-beginning-of-decl-1 returned %s"
	     decl-result))))))))

(defun c-backward-to-nth-BOF-{ (n where)
  ;; Skip to the opening brace of the Nth function before point.  If
  ;; point is inside a function, this counts as the first.  Point must be
  ;; outside any comment/string or macro.
  ;;
  ;; N must be strictly positive.
  ;; WHERE describes the position of point, one of the symbols `at-header',
  ;; `in-header', `in-block', `in-trailer', `at-function-end',
  ;; `outwith-function' as returned by c-where-wrt-brace-construct.
  ;;
  ;; If we run out of functions, leave point at BOB.  Return zero on success,
  ;; otherwise the number of {s still to go.
  ;;
  ;; This function may do hidden buffer changes
  (cond
   ;; What we do to go back the first defun depends on where we start.
   ((bobp))
   ((eq where 'in-block)
    (goto-char (c-least-enclosing-brace (c-parse-state)))
    (setq n (1- n)))
   ((eq where 'in-header)
    (c-syntactic-re-search-forward "{")
    (backward-char)
    (setq n (1- n)))
   ((memq where '(at-header outwith-function at-function-end in-trailer))
    (c-syntactic-skip-backward "^}")
    (when (eq (char-before) ?\})
      (backward-sexp)
      (setq n (1- n))))
   (t (error "Unknown `where' %s in c-backward-to-nth-EOF-{" where)))

   ;; Each time round the loop, go back to a "{" at the outermost level.
  (while (and (> n 0) (not (bobp)))
    (c-parse-state)		       ; This call speeds up the following one
					; by a factor of ~6.  Hmmm.  2006/4/5.
    (c-syntactic-skip-backward "^}")
    (when (eq (char-before) ?\})
      (backward-sexp)
      (setq n (1- n))))
   n)

(defun c-narrow-to-most-enclosing-decl-block (&optional inclusive level)
  ;; If we are inside a decl-block (in the sense of c-looking-at-decl-block),
  ;; i.e. something like namespace{} or extern{}, narrow to the insides of
  ;; that block (NOT including the enclosing braces) if INCLUSIVE is nil,
  ;; otherwise include the braces and the declaration which introduces them.
  ;; If the closing brace is missing, (point-max) is used instead.  LEVEL, if
  ;; non-nil, says narrow to the LEVELth decl-block outward, default value
  ;; being 1.
  (let ((paren-state (c-parse-state))
	encl-decl)
    (setq level (or level 1))
    (while (> level 0)
      (setq encl-decl (c-most-enclosing-decl-block paren-state))
      (if encl-decl
	  (progn
	    (while (> (c-pull-open-brace paren-state) encl-decl))
	    (setq level (1- level)))
	(setq level 0)))
    (if encl-decl
	(save-excursion
	  (narrow-to-region
	   (if inclusive
	       (progn (goto-char encl-decl)
		      (c-beginning-of-decl-1)
		      (point))
	     (1+ encl-decl))
	   (progn
	     (goto-char encl-decl)
	     (or (c-safe (forward-list)
			 (if inclusive
			     (point)
			   (1- (point))))
		 (point-max))))))))

(defun c-widen-to-enclosing-decl-scope (paren-state orig-point-min orig-point-max)
  ;; Narrow the buffer to the innermost declaration scope (e.g. a class, a
  ;; namespace or the "whole buffer") recorded in PAREN-STATE, the bounding
  ;; braces NOT being included in the resulting region.  On no account may the
  ;; final region exceed that bounded by ORIG-POINT-MIN, ORIG-POINT-MAX.
  ;; PAREN-STATE is a list of buffer positions in the style of
  ;; (c-parse-state), one of which will be that of the desired opening brace,
  ;; if there is one.
  ;;
  ;; Return the position of the enclosing opening brace, or nil
  (let (encl-decl)	    ; putative position of decl-scope's opening brace.
    (save-restriction
      (narrow-to-region orig-point-min orig-point-max)
      (setq encl-decl (and paren-state
			   (c-most-enclosing-decl-block paren-state))))
    (if encl-decl
	(progn
	  (widen)
	  (narrow-to-region (1+ encl-decl)
			    (save-excursion
			      (goto-char encl-decl)
			      (or (c-safe (forward-list)
					  (1- (point)))
				  orig-point-max)))
	  encl-decl)
      (narrow-to-region orig-point-min orig-point-max)
      nil)))

(eval-and-compile
  (defmacro c-while-widening-to-decl-block (condition)
    ;; Repeatedly evaluate CONDITION until it returns nil.  After each
    ;; evaluation, if `c-defun-tactic' is set appropriately, widen to innards
    ;; of the next enclosing declaration block (e.g. namespace, class), or the
    ;; buffer's original restriction.
    ;;
    ;; This is a very special purpose macro, which assumes the existence of
    ;; several variables.  It is for use only in c-beginning-of-defun and
    ;; c-end-of-defun.
    `(while
	 (and ,condition
	      (eq c-defun-tactic 'go-outward)
	      lim)
       (setq paren-state (c-whack-state-after lim paren-state))
       (setq lim (c-widen-to-enclosing-decl-scope
		  paren-state orig-point-min orig-point-max))
       (setq where 'in-block))))

(def-edebug-spec c-while-widening-to-decl-block t)

(defun c-beginning-of-defun (&optional arg)
  "Move backward to the beginning of a defun.
Every top level declaration that contains a brace paren block is
considered to be a defun.

With a positive argument, move backward that many defuns.  A negative
argument -N means move forward to the Nth following beginning.  Return
t unless search stops due to beginning or end of buffer.

Unlike the built-in `beginning-of-defun' this tries to be smarter
about finding the char with open-parenthesis syntax that starts the
defun."

  (interactive "p")
  (or arg (setq arg 1))

  (or (not (eq this-command 'c-beginning-of-defun))
      (eq last-command 'c-beginning-of-defun)
      (c-region-is-active-p)
      (push-mark))

  (c-save-buffer-state
      (beginning-of-defun-function
       end-of-defun-function
       (paren-state (c-parse-state))
       (orig-point-min (point-min)) (orig-point-max (point-max))
       lim		    ; Position of { which has been widened to.
       where pos case-fold-search)

    (save-restriction
      (if (eq c-defun-tactic 'go-outward)
	  (setq lim (c-widen-to-enclosing-decl-scope ; e.g. class, namespace.
		     paren-state orig-point-min orig-point-max)))

      ;; Move back out of any macro/comment/string we happen to be in.
      (c-beginning-of-macro)
      (setq pos (c-literal-start))
      (if pos (goto-char pos))

      (setq where (c-where-wrt-brace-construct))

      (if (< arg 0)
	  ;; Move forward to the closing brace of a function.
	  (progn
	    (if (memq where '(at-function-end outwith-function))
		(setq arg (1+ arg)))
	    (if (< arg 0)
		(c-while-widening-to-decl-block
		 (< (setq arg (- (c-forward-to-nth-EOF-\;-or-} (- arg) where))) 0)))
	    ;; Move forward to the next opening brace....
	    (when (and (= arg 0)
		       (progn
			 (c-while-widening-to-decl-block
			  (not (c-syntactic-re-search-forward "{" nil 'eob)))
			 (eq (char-before) ?{)))
	      (backward-char)
	      ;; ... and backward to the function header.
	      (c-beginning-of-decl-1)
	      t))

	;; Move backward to the opening brace of a function, making successively
	;; larger portions of the buffer visible as necessary.
	(when (> arg 0)
	  (c-while-widening-to-decl-block
	   (> (setq arg (c-backward-to-nth-BOF-{ arg where)) 0)))

	(when (eq arg 0)
	  ;; Go backward to this function's header.
	  (c-beginning-of-decl-1)

	  (setq pos (point))
	  ;; We're now there, modulo comments and whitespace.
	  ;; Try to be line oriented; position point at the closest
	  ;; preceding boi that isn't inside a comment, but if we hit
	  ;; the previous declaration then we use the current point
	  ;; instead.
	  (while (and (/= (point) (c-point 'boi))
		      (c-backward-single-comment)))
	  (if (/= (point) (c-point 'boi))
	      (goto-char pos)))

	(c-keep-region-active)
	(= arg 0)))))

(defun c-forward-to-nth-EOF-\;-or-} (n where)
  ;; Skip to the closing brace or semicolon of the Nth function after point.
  ;; We move to a semicolon only for things like structs which don't end at a
  ;; closing brace.  If point is inside a function, this counts as the first.
  ;; Point must be outside any comment/string or macro.
  ;;
  ;; N must be strictly positive.
  ;; WHERE describes the position of point, one of the symbols `at-header',
  ;; `in-header', `in-block', `in-trailer', `at-function-end',
  ;; `outwith-function' as returned by c-where-wrt-brace-construct.
  ;;
  ;; If we run out of functions, leave point at EOB.  Return zero on success,
  ;; otherwise the number of }s still to go.
  ;;
  ;; This function may do hidden buffer changes.

  (cond
  ;; What we do to go forward over the first defun depends on where we
  ;; start.  We go to the closing brace of that defun, even when we go
  ;; backwards to it (in a "struct foo {...} bar ;").
   ((eobp))
   ((eq where 'in-block)
    (goto-char (c-least-enclosing-brace (c-parse-state)))
    (forward-sexp)
    (setq n (1- n)))
   ((eq where 'in-trailer)
    ;; The actual movement is done below.
    (setq n (1- n)))
   ((memq where '(at-function-end outwith-function at-header in-header))
    (when (c-syntactic-re-search-forward "{" nil 'eob)
      (backward-char)
      (forward-sexp)
      (setq n (1- n))))
   (t (error "c-forward-to-nth-EOF-\\;-or-}: `where' is %s" where)))

  (when (c-in-function-trailer-p)
    (c-syntactic-re-search-forward ";" nil 'eob t))

  ;; Each time round the loop, go forward to a "}" at the outermost level.
  (while (and (> n 0) (not (eobp)))
    (when (c-syntactic-re-search-forward "{" nil 'eob)
      (backward-char)
      (forward-sexp)
      (setq n (1- n))))
  n)

(defun c-end-of-defun (&optional arg)
  "Move forward to the end of a top level declaration.
With argument, do it that many times.  Negative argument -N means move
back to Nth preceding end.  Returns t unless search stops due to
beginning or end of buffer.

An end of a defun occurs right after the close-parenthesis that matches
the open-parenthesis that starts a defun; see `beginning-of-defun'."
  (interactive "p")
  (or arg (setq arg 1))

  (or (not (eq this-command 'c-end-of-defun))
      (eq last-command 'c-end-of-defun)
      (c-region-is-active-p)
      (push-mark))

  (c-save-buffer-state
      (beginning-of-defun-function
       end-of-defun-function
       (paren-state (c-parse-state))
       (orig-point-min (point-min)) (orig-point-max (point-max))
       lim
       where pos case-fold-search)

    (save-restriction
      (if (eq c-defun-tactic 'go-outward)
	  (setq lim (c-widen-to-enclosing-decl-scope ; e.g. class, namespace
		     paren-state orig-point-min orig-point-max)))

      ;; Move back out of any macro/comment/string we happen to be in.
      (c-beginning-of-macro)
      (setq pos (c-literal-start))
      (if pos (goto-char pos))

      (setq where (c-where-wrt-brace-construct))

      (if (< arg 0)
	  ;; Move backwards to the } of a function
	  (progn
	    (if (memq where '(at-header outwith-function))
		(setq arg (1+ arg)))
	    (if (< arg 0)
		(c-while-widening-to-decl-block
		 (< (setq arg (- (c-backward-to-nth-BOF-{ (- arg) where))) 0)))
	    (if (= arg 0)
		(c-while-widening-to-decl-block
		 (progn (c-syntactic-skip-backward "^}")
			(not (eq (char-before) ?}))))))

	;; Move forward to the } of a function
	(if (> arg 0)
	    (c-while-widening-to-decl-block
	     (> (setq arg (c-forward-to-nth-EOF-\;-or-} arg where)) 0))))

      ;; Do we need to move forward from the brace to the semicolon?
      (when (eq arg 0)
	(if (c-in-function-trailer-p)	; after "}" of struct/enum, etc.
	    (c-syntactic-re-search-forward ";"))

	(setq pos (point))
	;; We're there now, modulo comments and whitespace.
	;; Try to be line oriented; position point after the next
	;; newline that isn't inside a comment, but if we hit the
	;; next declaration then we use the current point instead.
	(while (and (not (bolp))
		    (not (looking-at "\\s *$"))
		    (c-forward-single-comment)))
	(cond ((bolp))
	      ((looking-at "\\s *$")
	       (forward-line 1))
	      (t
	       (goto-char pos))))

      (c-keep-region-active)
      (= arg 0))))

(defun c-defun-name-1 ()
  "Return the name of the current defun, at the current narrowing,
or NIL if there isn't one.  \"Defun\" here means a function, or
other top level construct with a brace block."
  (c-save-buffer-state
      (beginning-of-defun-function end-of-defun-function
       where pos decl0 decl type-pos tag-pos case-fold-search)

    (save-excursion
      ;; Move back out of any macro/comment/string we happen to be in.
      (c-beginning-of-macro)
      (setq pos (c-literal-start))
      (if pos (goto-char pos))

      (setq where (c-where-wrt-brace-construct))

      ;; Move to the beginning of the current defun, if any, if we're not
      ;; already there.
      (if (memq where '(outwith-function at-function-end))
	  nil
	(unless (eq where 'at-header)
	  (c-backward-to-nth-BOF-{ 1 where)
	  (c-beginning-of-decl-1))
	(when (looking-at c-typedef-key)
	  (goto-char (match-end 0))
	  (c-forward-syntactic-ws))
	(setq type-pos (point))

	;; Pick out the defun name, according to the type of defun.
	(cond
	 ((looking-at "DEFUN\\s-*(")	;"DEFUN\\_>") think of XEmacs!
	  ;; DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, ...) ==> Ffile_name_directory
	  ;; DEFUN(POSIX::STREAM-LOCK, stream lockp &key BLOCK SHARED START LENGTH) ==> POSIX::STREAM-LOCK
	  (down-list 1)
	  (c-forward-syntactic-ws)
	  (when (eq (char-after) ?\")
	    (forward-sexp 1)
	    (c-forward-token-2))	; over the comma and following WS.
	  (buffer-substring-no-properties
	   (point)
	   (progn
	     (c-forward-token-2)
	     (c-backward-syntactic-ws)
	     (point))))

	 ((and (c-major-mode-is 'objc-mode) (looking-at "[-+]\\s-*("))     ; Objective-C method
	  ;; Move to the beginning of the method name.
	  (c-forward-token-2 2 t)
	  (let* ((class
		  (save-excursion
		    (when (re-search-backward
			   "^\\s-*@\\(implementation\\|class\\|interface\\)\\s-+\\(\\sw+\\)" nil t)
		      (match-string-no-properties 2))))
		 (limit (save-excursion (re-search-forward "[;{]" nil t)))
		 (method (when (re-search-forward "\\(\\sw+:?\\)" limit t)
			   (match-string-no-properties 1))))
	    (when (and class method)
	      ;; Add the parameter labels onto name.  They always end in ':'.
	      (while (re-search-forward "\\(\\sw+:\\)" limit 1)
		(setq method (concat method (match-string-no-properties 1))))
	      (concat "[" class " " method "]"))))

	 (t				; Normal function or initializer.
	  (when (looking-at c-defun-type-name-decl-key) ; struct, etc.
	    (goto-char (match-end 0))
	    (c-forward-syntactic-ws)
	    (setq tag-pos (point))
	    (goto-char type-pos))
	  (setq decl0 (c-forward-decl-or-cast-1 (c-point 'bosws) 'top nil))
	  (when (consp decl0)
	    (goto-char (car decl0))
	    (setq decl (c-forward-declarator)))
	  (and decl
	       (car decl) (cadr decl)
	       (buffer-substring-no-properties
		(if (eq (car decl) tag-pos)
		    type-pos
		  (car decl))
		(cadr decl)))))))))

(defun c-defun-name ()
  "Return the name of the current defun, or NIL if there isn't one.
\"Defun\" here means a function, or other top level construct
with a brace block, at the outermost level of nesting."
  (c-save-buffer-state ()
    (save-restriction
      (widen)
      (c-defun-name-1))))

(defun c-declaration-limits-1 (near)
  ;; Return a cons of the beginning and end position of the current
  ;; declaration or macro in the current narrowing.  If there is no current
  ;; declaration or macro, return nil, unless NEAR is non-nil, in which case
  ;; the closest following one is chosen instead (if there is any).  The end
  ;; position is at the next line, providing there is one before the
  ;; declaration.
  ;;
  ;; This function might do hidden buffer changes.
  (save-excursion
    (let ((start (point))
	  (paren-state (c-parse-state))
	  lim pos end-pos where)
      (or
       ;; Note: Some code duplication in `c-beginning-of-defun' and
       ;; `c-end-of-defun'.
       (catch 'exit
	 (unless (c-safe
		   (goto-char (c-least-enclosing-brace paren-state))
		   ;; If we moved to the outermost enclosing paren
		   ;; then we can use c-safe-position to set the
		   ;; limit. Can't do that otherwise since the
		   ;; earlier paren pair on paren-state might very
		   ;; well be part of the declaration we should go
		   ;; to.
		   (setq lim (c-safe-position (point) paren-state))
		   ;; We might have a struct foo {...} as the type of the
		   ;; function, so set LIM back one further block.
		   (if (eq (char-before lim) ?})
		       (setq lim
			     (or
			      (save-excursion
				(and
				 (c-go-list-backward lim)
				 (let ((paren-state-1 (c-parse-state)))
				   (c-safe-position
				    (point) paren-state-1))))
			      (point-min))))
		   t)
	   ;; At top level.  Make sure we aren't inside a literal.
	   (setq pos (c-literal-start
		      (c-safe-position (point) paren-state)))
	   (if pos (goto-char pos)))

	 (when (c-beginning-of-macro)
	   (throw 'exit
		  (cons (point)
			(save-excursion
			  (c-end-of-macro)
			  (forward-line 1)
			  (point)))))

	 (setq pos (point))
	 (setq where (and (not (save-excursion (c-beginning-of-macro)))
			  (c-where-wrt-brace-construct)))
	 (when (and (not (eq where 'at-header))
		    (or (and near
			     (memq where
				   '(at-function-end outwith-function))
			     ;; Check we're not inside a declaration without
			     ;; braces.
			     (save-excursion
			       (memq (car (c-beginning-of-decl-1 lim))
				     '(previous label))))
			(eq (car (c-beginning-of-decl-1 lim)) 'previous)
			(= pos (point))))
	   ;; We moved back over the previous defun.  Skip to the next
	   ;; one.  Not using c-forward-syntactic-ws here since we
	   ;; should not skip a macro.  We can also be directly after
	   ;; the block in a `c-opt-block-decls-with-vars-key'
	   ;; declaration, but then we won't move significantly far
	   ;; here.
	   (goto-char pos)
	   (c-forward-comments)

	   (when (and near (c-beginning-of-macro))
	     (throw 'exit
		    (cons (point)
			  (save-excursion
			    (c-end-of-macro)
			    (forward-line 1)
			    (point))))))

	 (if (eobp) (throw 'exit nil))

	 ;; Check if `c-beginning-of-decl-1' put us after the block in a
	 ;; declaration that doesn't end there.  We're searching back and
	 ;; forth over the block here, which can be expensive.
	 (setq pos (point))
	 (if (and c-opt-block-decls-with-vars-key
		  (progn
		    (c-backward-syntactic-ws)
		    (eq (char-before) ?}))
		  (eq (car (c-beginning-of-decl-1))
		      'previous)
		  (save-excursion
		    (c-end-of-decl-1)
		    (and (> (point) pos)
			 (setq end-pos (point)))))
	     nil
	   (goto-char pos))

	 (if (or (and (not near) (> (point) start))
		 (not (eq (c-where-wrt-brace-construct) 'at-header)))
	     nil

	   ;; Try to be line oriented; position the limits at the
	   ;; closest preceding boi, and after the next newline, that
	   ;; isn't inside a comment, but if we hit a neighboring
	   ;; declaration then we instead use the exact declaration
	   ;; limit in that direction.
	   (cons (progn
		   (setq pos (point))
		   (while (and (/= (point) (c-point 'boi))
			       (c-backward-single-comment)))
		   (if (/= (point) (c-point 'boi))
		       pos
		     (point)))
		 (progn
		   (if end-pos
		       (goto-char end-pos)
		     (c-end-of-decl-1))
		   (setq pos (point))
		   (while (and (not (bolp))
			       (not (looking-at "\\s *$"))
			       (c-forward-single-comment)))
		   (cond ((bolp)
			  (point))
			 ((looking-at "\\s *$")
			  (forward-line 1)
			  (point))
			 (t
			  pos))))))
       (and (not near)
	    (goto-char (point-min))
	    (c-forward-decl-or-cast-1 -1 nil nil)
	    (eq (char-after) ?\{)
	    (cons (point-min) (point-max)))))))

(defun c-declaration-limits (near)
  ;; Return a cons of the beginning and end positions of the current
  ;; top level declaration or macro.  If point is not inside any then
  ;; nil is returned, unless NEAR is non-nil in which case the closest
  ;; following one is chosen instead (if there is any).  The end
  ;; position is at the next line, providing there is one before the
  ;; declaration.
  ;;
  ;; This function might do hidden buffer changes.
  (save-restriction
    ;; Narrow enclosing brace blocks out, as required by the values of
    ;; `c-defun-tactic', `near', and the position of point.
    (when (eq c-defun-tactic 'go-outward)
      (let ((bounds
	     (save-restriction
	       (if (and (not (save-excursion (c-beginning-of-macro)))
			(save-restriction
			  (c-narrow-to-most-enclosing-decl-block)
			  (memq (c-where-wrt-brace-construct)
				'(at-function-end outwith-function)))
			(not near))
		   (c-narrow-to-most-enclosing-decl-block nil 2)
		 (c-narrow-to-most-enclosing-decl-block))
	       (cons (point-min) (point-max)))))
	(narrow-to-region (car bounds) (cdr bounds))))
    (c-declaration-limits-1 near)))

(defun c-defun-name-and-limits (near)
  ;; Return a cons of the name and limits (itself a cons) of the current
  ;; top-level declaration or macro, or nil of there is none.
  ;;
  ;; If `c-defun-tactic' is 'go-outward, we return the name and limits of the
  ;; most tightly enclosing declaration or macro.  Otherwise, we return that
  ;; at the file level.
  (save-restriction
    (widen)
    (if (eq c-defun-tactic 'go-outward)
	(c-save-buffer-state ((paren-state (c-parse-state))
			      (orig-point-min (point-min))
			      (orig-point-max (point-max))
			      lim name where limits fdoc)
	  (setq lim (c-widen-to-enclosing-decl-scope
		     paren-state orig-point-min orig-point-max))
	  (and lim (setq lim (1- lim)))
	  (c-while-widening-to-decl-block (not (setq name (c-defun-name-1))))
	  (when name
	    (setq limits (c-declaration-limits-1 near))
	    (cons name limits)))
      (c-save-buffer-state ((name (c-defun-name))
			    (limits (c-declaration-limits near)))
	(and name limits (cons name limits))))))

(defun c-display-defun-name (&optional arg)
  "Display the name of the current CC mode defun and the position in it.
With a prefix arg, push the name onto the kill ring too."
  (interactive "P")
  (save-restriction
    (widen)
    (c-save-buffer-state ((name-and-limits (c-defun-name-and-limits nil))
			  (name (car name-and-limits))
			  (limits (cdr name-and-limits))
			  (point-bol (c-point 'bol)))
      (when name
	(message "%s.  Line %s/%s." name
		 (1+ (count-lines (car limits) (max point-bol (car limits))))
		 (count-lines (car limits) (cdr limits)))
	(if arg (kill-new name))
	(sit-for 3 t)))))
(put 'c-display-defun-name 'isearch-scroll t)

(defun c-mark-function ()
  "Put mark at end of the current top-level declaration or macro, point at beginning.
If point is not inside any then the closest following one is
chosen.  Each successive call of this command extends the marked
region by one function.

A mark is left where the command started, unless the region is already active
\(in Transient Mark mode).

As opposed to \\[c-beginning-of-defun] and \\[c-end-of-defun], this
function does not require the declaration to contain a brace block."
  (interactive)

  (let (decl-limits case-fold-search)
    (c-save-buffer-state nil
      ;; We try to be line oriented, unless there are several
      ;; declarations on the same line.
      (if (looking-at c-syntactic-eol)
	  (c-backward-token-2 1 nil (c-point 'bol)))
      (setq decl-limits (c-declaration-limits t)))

    (if (not decl-limits)
	(error "Cannot find any declaration")
      (let* ((extend-region-p
	      (and (eq this-command 'c-mark-function)
		   (eq last-command 'c-mark-function)))
	     (push-mark-p (and (eq this-command 'c-mark-function)
			       (not extend-region-p)
			       (not (c-region-is-active-p)))))
	(if push-mark-p (push-mark))
	(if extend-region-p
	    (progn
	      (exchange-point-and-mark)
	      (setq decl-limits (c-declaration-limits t))
	      (when (not decl-limits)
		(exchange-point-and-mark)
		(error "Cannot find any declaration"))
	      (goto-char (cdr decl-limits))
	      (exchange-point-and-mark))
	  (goto-char (car decl-limits))
	  (push-mark (cdr decl-limits) nil t))))))

(defun c-cpp-define-name ()
  "Return the name of the current CPP macro, or NIL if we're not in one."
  (let (case-fold-search)
    (save-excursion
      (and c-opt-cpp-macro-define-start
	   (c-beginning-of-macro)
	   (looking-at c-opt-cpp-macro-define-start)
	   (match-string-no-properties 1)))))

\f
;; Movement by statements.
(defun c-in-comment-line-prefix-p ()
  ;; Point is within a comment.  Is it also within a comment-prefix?
  ;; Space at BOL which precedes a comment-prefix counts as part of it.
  ;;
  ;; This function might do hidden buffer changes.
  (let ((here (point)))
    (save-excursion
      (beginning-of-line)
      (skip-chars-forward " \t")
      (and (looking-at c-current-comment-prefix)
	   (/= (match-beginning 0) (match-end 0))
	   (< here (match-end 0))))))

(defun c-narrow-to-comment-innards (range)
  ;; Narrow to the "inside" of the comment (block) defined by range, as
  ;; follows:
  ;;
  ;; A c-style block comment has its opening "/*" and its closing "*/" (if
  ;; present) removed.  A c++-style line comment retains its opening "//" but
  ;; has any final NL removed.  If POINT is currently outwith these innards,
  ;; move it to the appropriate boundary.
  ;;
  ;; This narrowing simplifies the sentence movement functions, since it
  ;; eliminates awkward things at the boundaries of the comment (block).
  ;;
  ;; This function might do hidden buffer changes.
  (let* ((lit-type (c-literal-type range))
	 (beg (if (eq lit-type 'c) (+ (car range) 2) (car range)))
	 (end (if (eq lit-type 'c)
		  (if (and (eq (char-before (cdr range)) ?/)
			   (eq (char-before (1- (cdr range))) ?*))
		      (- (cdr range) 2)
		    (point-max))
		(if (eq (cdr range) (point-max))
		    (point-max)
		  (- (cdr range) 1)))))
    (if (> (point) end)
	(goto-char end))		; This would be done automatically by ...
    (if (< (point) beg)
	(goto-char beg))	;  ... narrow-to-region but is not documented.
    (narrow-to-region beg end)))

(defun c-beginning-of-sentence-in-comment (range)
  ;; Move backwards to the "beginning of a sentence" within the comment
  ;; defined by RANGE, a cons of its starting and ending positions.  If we
  ;; find a BOS, return NIL.  Otherwise, move point to just before the start
  ;; of the comment and return T.
  ;;
  ;; The BOS is either text which follows a regexp match of sentence-end,
  ;; or text which is a beginning of "paragraph".
  ;; Comment-prefixes are treated like WS when calculating BOSes or BOPs.
  ;;
  ;; This code was adapted from GNU Emacs's forward-sentence in paragraphs.el.
  ;; It is not a general function, but is intended only for calling from
  ;; c-move-over-sentence.  Not all preconditions have been explicitly stated.
  ;;
  ;; This function might do hidden buffer changes.
  (save-match-data
    (let ((start-point (point)))
      (save-restriction
	(c-narrow-to-comment-innards range) ; This may move point back.
	(let* ((here (point))
	       last
	       (here-filler	   ; matches WS and comment-prefixes at point.
		(concat "\\=\\(^[ \t]*\\(" c-current-comment-prefix "\\)"
			"\\|[ \t\n\r\f]\\)*"))
	       (prefix-at-bol-here ; matches WS and prefix at BOL, just before point
		(concat "^[ \t]*\\(" c-current-comment-prefix "\\)[ \t\n\r\f]*\\="))
	       ;; First, find the previous paragraph start, if any.
	       (par-beg	; point where non-WS/non-prefix text of paragraph starts.
		(save-excursion
		  (forward-paragraph -1) ; uses cc-mode values of
					; paragraph-\(start\|separate\)
		  (if (> (re-search-forward here-filler nil t) here)
		      (goto-char here))
		  (when (>= (point) here)
		    (forward-paragraph -2)
		    (if (> (re-search-forward here-filler nil t) here)
			(goto-char here)))
		  (point))))

	  ;; Now seek successively earlier sentence ends between PAR-BEG and
	  ;; HERE, until the "start of sentence" following it is earlier than
	  ;; HERE, or we hit PAR-BEG.  Beware of comment prefixes!
	  (while (and (re-search-backward (c-sentence-end) par-beg 'limit)
		      (setq last (point))
		      (goto-char (match-end 0))	; tentative beginning of sentence
		      (or (>= (point) here)
			  (and (not (bolp)) ; Found a non-blank comment-prefix?
			       (save-excursion
				 (if (re-search-backward prefix-at-bol-here nil t)
				     (/= (match-beginning 1) (match-end 1)))))
			  (progn	; Skip the crud to find a real b-o-s.
			    (if (c-in-comment-line-prefix-p)
				(beginning-of-line))
			    (re-search-forward here-filler) ; always succeeds.
			    (>= (point) here))))
	    (goto-char last))
	  (re-search-forward here-filler)))

      (if (< (point) start-point)
	  nil
	(goto-char (car range))
	t))))

(defun c-end-of-sentence-in-comment (range)
  ;; Move forward to the "end of a sentence" within the comment defined by
  ;; RANGE, a cons of its starting and ending positions (enclosing the opening
  ;; comment delimiter and the terminating */ or newline).  If we find an EOS,
  ;; return NIL.  Otherwise, move point to just after the end of the comment
  ;; and return T.
  ;;
  ;; The EOS is just after the non-WS part of the next match of the regexp
  ;; sentence-end.  Typically, this is just after one of [.!?].  If there is
  ;; no sentence-end match following point, any WS before the end of the
  ;; comment will count as EOS, providing we're not already in it.
  ;;
  ;; This code was adapted from GNU Emacs's forward-sentence in paragraphs.el.
  ;; It is not a general function, but is intended only for calling from
  ;; c-move-over-sentence.
  ;;
  ;; This function might do hidden buffer changes.
  (save-match-data
    (let ((start-point (point))
	  ;; (lit-type (c-literal-type range))  ; Commented out, 2005/11/23, ACM
	  )
      (save-restriction
	(c-narrow-to-comment-innards range) ; This might move point forwards.
	(let* ((here (point))
	       (par-end	; EOL position of last text in current/next paragraph.
		(save-excursion
		  ;; The cc-mode values of paragraph-\(start\|separate\), set
		  ;; in c-setup-paragraph-variables, are used in the
		  ;; following.
		  (forward-paragraph 1)
		  (if (eq (preceding-char) ?\n) (forward-char -1))
		  (when (<= (point) here) ; can happen, e.g., when HERE is at EOL.
		    (goto-char here)
		    (forward-paragraph 2)
		    (if (eq (preceding-char) ?\n) (forward-char -1)))
		  (point)))

	       last
	       (prefix-at-bol-here
		(concat "^[ \t]*\\(" c-current-comment-prefix "\\)\\=")))
	  ;; Go forward one "comment-prefix which looks like sentence-end"
	  ;; each time round the following:
	  (while (and (re-search-forward (c-sentence-end) par-end 'limit)
		      (progn
			(setq last (point))
			(skip-chars-backward " \t\n")
			(or (and (not (bolp))
				 (re-search-backward prefix-at-bol-here nil t)
				 (/= (match-beginning 1) (match-end 1)))
			    (<= (point) here))))
	    (goto-char last))

	  ;; Take special action if we're up against the end of a comment (of
	  ;; either sort): Leave point just after the last non-ws text.
	  (if (eq (point) (point-max))
	      (while (or (/= (skip-chars-backward " \t\n") 0)
			 (and (re-search-backward prefix-at-bol-here nil t)
			      (/= (match-beginning 1) (match-end 1))))))))

      (if (> (point) start-point)
	      nil
	    (goto-char (cdr range))
	    t))))

(defun c-beginning-of-sentence-in-string (range)
  ;; Move backwards to the "beginning of a sentence" within the string defined
  ;; by RANGE, a cons of its starting and ending positions (enclosing the
  ;; string quotes).  If we find a BOS, return NIL.  Otherwise, move point to
  ;; just before the start of the string and return T.
  ;;
  ;; The BOS is either the text which follows a regexp match of sentence-end
  ;; or text which is a beginning of "paragraph".  For the purposes of
  ;; determining paragraph boundaries, escaped newlines are treated as
  ;; ordinary newlines.
  ;;
  ;; This code was adapted from GNU Emacs's forward-sentence in paragraphs.el.
  ;; It is not a general function, but is intended only for calling from
  ;; c-move-over-sentence.
  ;;
  ;; This function might do hidden buffer changes.
  (save-match-data
    (let* ((here (point)) last
	   (end (1- (cdr range)))
	   (here-filler		   ; matches WS and escaped newlines at point.
	    "\\=\\([ \t\n\r\f]\\|\\\\[\n\r]\\)*")
	   ;; Enhance paragraph-start and paragraph-separate also to recognize
	   ;; blank lines terminated by escaped EOLs.  IT MAY WELL BE that
	   ;; these values should be customizable user options, or something.
	   (paragraph-start c-string-par-start)
	   (paragraph-separate c-string-par-separate)

	   (par-beg	       ; beginning of current (or previous) paragraph.
	    (save-excursion
	      (save-restriction
		(narrow-to-region (1+ (car range)) end)
		(forward-paragraph -1)	; uses above values of
					; paragraph-\(start\|separate\)
		(if (> (re-search-forward here-filler nil t) here)
		    (goto-char here))
		(when (>= (point) here)
		  (forward-paragraph -2)
		  (if (> (re-search-forward here-filler nil t) here)
		      (goto-char here)))
		(point)))))
      ;; Now see if we can find a sentence end after PAR-BEG.
      (while (and (re-search-backward c-sentence-end-with-esc-eol par-beg 'limit)
		  (setq last (point))
		  (goto-char (match-end 0))
		  (or (> (point) end)
		      (progn
			(re-search-forward
			 here-filler end t) ; always succeeds.  Use end rather
					; than here, in case point starts
					; beyond the closing quote.
			(>= (point) here))))
	(goto-char last))
      (re-search-forward here-filler here t)
      (if (< (point) here)
	  nil
	(goto-char (car range))
	t))))

(defun c-end-of-sentence-in-string (range)
  ;; Move forward to the "end of a sentence" within the string defined by
  ;; RANGE, a cons of its starting and ending positions.  If we find an EOS,
  ;; return NIL.  Otherwise, move point to just after the end of the string
  ;; and return T.
  ;;
  ;; The EOS is just after the non-WS part of the next match of the regexp
  ;; sentence-end.  Typically, this is just after one of [.!?].  If there is
  ;; no sentence-end match following point, any WS before the end of the
  ;; string will count as EOS, providing we're not already in it.
  ;;
  ;; This code was adapted from GNU Emacs's forward-sentence in paragraphs.el.
  ;; It is not a general function, but is intended only for calling from
  ;; c-move-over-sentence.
  ;;
  ;; This function might do hidden buffer changes.
  (save-match-data
    (let* ((here (point))
	   last
	   ;; Enhance paragraph-start and paragraph-separate to recognize
	   ;; blank lines terminated by escaped EOLs.
	   (paragraph-start c-string-par-start)
	   (paragraph-separate c-string-par-separate)

	   (par-end	; EOL position of last text in current/next paragraph.
	    (save-excursion
	      (save-restriction
		(narrow-to-region (car range) (1- (cdr range)))
		;; The above values of paragraph-\(start\|separate\) are used
		;; in the following.
		(forward-paragraph 1)
		(setq last (point))
		;; (re-search-backward filler-here nil t) would find an empty
		;; string.  Therefore we simulate it by the following:
		(while (or (/= (skip-chars-backward " \t\n\r\f") 0)
			   (re-search-backward "\\\\\\($\\)\\=" nil t)))
		(unless (> (point) here)
		  (goto-char last)
		  (forward-paragraph 1)
		  (while (or (/= (skip-chars-backward " \t\n\r\f") 0)
			     (re-search-backward "\\\\\\($\\)\\=" nil t))))
		(point)))))
      ;; Try to go forward a sentence.
      (when (re-search-forward c-sentence-end-with-esc-eol par-end 'limit)
	(setq last (point))
	(while (or (/= (skip-chars-backward " \t\n") 0)
		   (re-search-backward "\\\\\\($\\)\\=" nil t))))
      ;; Did we move a sentence, or did we hit the end of the string?
      (if (> (point) here)
	  nil
	(goto-char (cdr range))
	t))))

(defun c-ascertain-preceding-literal ()
  ;; Point is not in a literal (i.e. comment or string (include AWK regexp)).
  ;; If a literal is the next thing (aside from whitespace) to be found before
  ;; point, return a cons of its start.end positions (enclosing the
  ;; delimiters).  Otherwise return NIL.
  ;;
  ;; This function might do hidden buffer changes.
  (save-excursion
    (c-collect-line-comments
     (let ((here (point))
	   pos)
       (if (c-backward-single-comment)
	   (cons (point) (progn (c-forward-single-comment) (point)))
	 (save-restriction
	   ;; to prevent `looking-at' seeing a " at point.
	   (narrow-to-region (point-min) here)
	   (when
	       (or
		;; An EOL can act as an "open string" terminator in AWK.
		(looking-at c-ws*-string-limit-regexp)
		(and (not (bobp))
		     (progn (backward-char)
			    (looking-at c-string-limit-regexp))))
	     (goto-char (match-end 0))	; just after the string terminator.
	     (setq pos (point))
	     (c-safe (c-backward-sexp 1) ; move back over the string.
		     (cons (point) pos)))))))))

(defun c-ascertain-following-literal ()
  ;; Point is not in a literal (i.e. comment or string (include AWK regexp)).
  ;; If a literal is the next thing (aside from whitespace) following point,
  ;; return a cons of its start.end positions (enclosing the delimiters).
  ;; Otherwise return NIL.
  ;;
  ;; This function might do hidden buffer changes.
  (save-excursion
    (c-collect-line-comments
     (let (pos)
       (c-skip-ws-forward)
       (if (looking-at c-string-limit-regexp) ; string-delimiter.
	   (cons (point) (or (c-safe (progn (c-forward-sexp 1) (point)))
			     (point-max)))
	 (setq pos (point))
	 (if (c-forward-single-comment)
	     (cons pos (point))))))))

(defun c-after-statement-terminator-p () ; Should we pass in LIM here?
  ;; Does point immediately follow a statement "terminator"?  A virtual
  ;; semicolon is regarded here as such.  So is an opening brace ;-)
  ;;
  ;; This function might do hidden buffer changes.
  (or (save-excursion
	(backward-char)
	(and (looking-at "[;{}]")
	     (not (and c-special-brace-lists ; Pike special brace lists.
		       (eq (char-after) ?{)
		       (c-looking-at-special-brace-list)))))
      (c-at-vsemi-p)
      ;; The following (for macros) is not strict about exactly where we are
      ;; wrt white space at the end of the macro.  Doesn't seem to matter too
      ;; much.  ACM 2004/3/29.
      (let (eom)
	(save-excursion
	  (if (c-beginning-of-macro)
	      (setq eom (progn (c-end-of-macro)
			       (point)))))
	(when eom
	  (save-excursion
	    (c-forward-comments)
	    (>= (point) eom))))))

(defun c-back-over-illiterals (macro-start)
  ;; Move backwards over code which isn't a literal (i.e. comment or string),
  ;; stopping before reaching BOB or a literal or the boundary of a
  ;; preprocessor statement or the "beginning of a statement".  MACRO-START is
  ;; the position of the '#' beginning the current preprocessor directive, or
  ;; NIL if we're not in such.
  ;;
  ;; Return a cons (A.B), where
  ;;   A is NIL if we moved back to a BOS (and know it), T otherwise (we
  ;;     didn't move, or we hit a literal, or we're not sure about BOS).
  ;;   B is MACRO-BOUNDARY if we are about to cross the boundary out of or
  ;;     into a macro, otherwise LITERAL if we've hit a literal, otherwise NIL
  ;;
  ;;   The total collection of returned values is as follows:
  ;;     (nil . nil): Found a BOS whilst remaining inside the illiterals.
  ;;     (t . literal): No BOS found: only a comment/string.  We _might_ be at
  ;;                    a BOS - the caller must check this.
  ;;     (nil . macro-boundary): only happens with non-nil macro-start.  We've
  ;;                             moved and reached the opening # of the macro.
  ;;     (t . macro-boundary): Every other circumstance in which we're at a
  ;;                           macro-boundary.  We might be at a BOS.
  ;;
  ;; Point is left either at the beginning-of-statement, or at the last non-ws
  ;; code before encountering the literal/BOB or macro-boundary.
  ;;
  ;; Note that this function moves within either preprocessor commands
  ;; (macros) or normal code, but will not cross a boundary between the two,
  ;; or between two distinct preprocessor commands.
  ;;
  ;; Stop before `{' and after `;', `{', `}' and `};' when not followed by `}'
  ;; or `)', but on the other side of the syntactic ws.  Move by sexps and
  ;; move into parens.  Also stop before `#' when it's at boi on a line.
  ;;
  ;; This function might do hidden buffer changes.
  (save-match-data
    (let ((here (point))
	  last) ; marks the position of non-ws code, what'll be BOS if, say, a
					; semicolon precedes it.
      (catch 'done
	(while t ;; We go back one "token" each iteration of the loop.
	  (setq last (point))
	  (cond
	  ;; Stop at the token after a comment.
	   ((c-backward-single-comment) ; Also functions as backwards-ws.
	    (goto-char last)
	    (throw 'done '(t . literal)))

	  ;; If we've gone back over a LF, we might have moved into or out of
	  ;; a preprocessor line.
	   ((and (save-excursion
		   (beginning-of-line)
		   (re-search-forward "\\(^\\|[^\\]\\)[\n\r]" last t))
		 (if macro-start
		     (< (point) macro-start)
		   (c-beginning-of-macro)))
	    (goto-char last)
	    ;; Return a car of NIL ONLY if we've hit the opening # of a macro.
	    (throw 'done (cons (or (eq (point) here)
				   (not macro-start))
			       'macro-boundary)))

	   ;; Have we found a virtual semicolon?  If so, stop, unless the next
	   ;; statement is where we started from.
	   ((and (c-at-vsemi-p)
		 (< last here)
		 (not (memq (char-after last) '(?\) ?})))) ; we've moved back from ) or }
	    (goto-char last)
	    (throw 'done '(nil . nil)))

	   ;; Hit the beginning of the buffer/region?
	   ((bobp)
	    (if (/= here last)
		(goto-char last))
	    (throw 'done '(nil . nil)))

	   ;; Move back a character.
	   ((progn (backward-char) nil))

	   ;; Stop at "{" (unless it's a PIKE special brace list.)
	   ((eq (char-after) ?\{)
	    (if (and c-special-brace-lists
		     (c-looking-at-special-brace-list))
		(skip-syntax-backward "w_") ; Speedup only.
	      (if (/= here last)
		  (goto-char last))
	      (throw 'done '(nil . nil))))

	   ;; Have we reached the start of a macro?  This always counts as
	   ;; BOS.  (N.B. I don't think (eq (point) here) can ever be true
	   ;; here.  FIXME!!! ACM 2004/3/29)
	   ((and macro-start (eq (point) macro-start))
 	    (throw 'done (cons (eq (point) here) 'macro-boundary)))

	   ;; Stop at token just after "}" or ";".
	   ((looking-at "[;}]")
	    ;; If we've gone back over ;, {, or }, we're done.
	    (if (or (= here last)
		    (memq (char-after last) '(?\) ?})))	; we've moved back from ) or }
		(if (and (eq (char-before) ?}) ; If };, treat them as a unit.
			 (eq (char-after) ?\;))
		    (backward-char))
	      (goto-char last)	 ; To the statement starting after the ; or }.
	      (throw 'done '(nil . nil))))

	   ;; Stop at the token after a string.
	   ((looking-at c-string-limit-regexp) ; Just gone back over a string terminator?
	    (goto-char last)
	    (throw 'done '(t . literal)))

	   ;; Nothing special: go back word characters.
	   (t (skip-syntax-backward "w_")) ; Speedup only.
	   ))))))

(defun c-forward-over-illiterals (macro-end allow-early-stop)
  ;; Move forwards over code, stopping before reaching EOB or a literal
  ;; (i.e. a comment/string) or the boundary of a preprocessor statement or
  ;; the "end of a statement".  MACRO-END is the position of the EOL/EOB which
  ;; terminates the current preprocessor directive, or NIL if we're not in
  ;; such.
  ;;
  ;; ALLOW-EARLY-STOP is non-nil if it is permissible to return without moving
  ;; forward at all, should we encounter a `{'.  This is an ugly kludge, but
  ;; seems unavoidable.  Depending on the context this function is called
  ;; from, we _sometimes_ need to stop there.  Currently (2004/4/3),
  ;; ALLOW-EARLY-STOP is applied only to open braces, not to virtual
  ;; semicolons, or anything else.
  ;;
  ;; Return a cons (A.B), where
  ;;   A is NIL if we moved forward to an EOS, or stay at one (when
  ;;     ALLOW-EARLY-STOP is set), T otherwise (we hit a literal).
  ;;   B is 'MACRO-BOUNDARY if we are about to cross the boundary out of or
  ;;     into a macro, otherwise 'LITERAL if we've hit a literal, otherwise NIL
  ;;
  ;; Point is left either after the end-of-statement, or at the last non-ws
  ;; code before encountering the literal, or the # of the preprocessor
  ;; statement, or at EOB [or just after last non-WS stuff??].
  ;;
  ;; As a clarification of "after the end-of-statement", if a comment or
  ;; whitespace follows a completed AWK statement, that statement is treated
  ;; as ending just after the last non-ws character before the comment.
  ;;
  ;; Note that this function moves within either preprocessor commands
  ;; (macros) or normal code, but not both within the same invocation.
  ;;
  ;; Stop before `{', `}', and `#' when it's at boi on a line, but on the
  ;; other side of the syntactic ws, and after `;', `}' and `};'.  Only
  ;; stop before `{' if at top level or inside braces, though.  Move by
  ;; sexps and move into parens.  Also stop at eol of lines with `#' at
  ;; the boi.
  ;;
  ;; This function might do hidden buffer changes.
  (let ((here (point))
	last)
    (catch 'done
      (while t ;; We go one "token" forward each time round this loop.
	(setq last (point))

	;; If we've moved forward to a virtual semicolon, we're done.
	(if (and (> last here) ; Should we check ALLOW-EARLY-STOP, here? 2004/4/3
		 (c-at-vsemi-p))
	    (throw 'done '(nil . nil)))

	(c-skip-ws-forward)
	(cond
	 ;; Gone past the end of a macro?
	 ((and macro-end (> (point) macro-end))
	  (goto-char last)
	  (throw 'done (cons (eq (point) here) 'macro-boundary)))

	 ;; About to hit a comment?
	 ((save-excursion (c-forward-single-comment))
	  (goto-char last)
	  (throw 'done '(t . literal)))

	 ;; End of buffer?
	 ((eobp)
	  (if (/= here last)
	      (goto-char last))
	  (throw 'done '(nil . nil)))

	 ;; If we encounter a '{', stop just after the previous token.
	 ((and (eq (char-after) ?{)
	       (not (and c-special-brace-lists
			 (c-looking-at-special-brace-list)))
	       (or allow-early-stop (/= here last))
	       (save-excursion	; Is this a check that we're NOT at top level?
;;;; NO!  This seems to check that (i) EITHER we're at the top level; OR (ii) The next enclosing
;;;; level of bracketing is a '{'.  HMM.  Doesn't seem to make sense.
;;;; 2003/8/8 This might have something to do with the GCC extension "Statement Expressions", e.g.
;;;; while ({stmt1 ; stmt2 ; exp ;}).  This form excludes such Statement Expressions.
		 (or (not (c-safe (up-list -1) t))
		     (= (char-after) ?{))))
	  (goto-char last)
	  (throw 'done '(nil . nil)))

	 ;; End of a PIKE special brace list?  If so, step over it and continue.
	 ((and c-special-brace-lists
	       (eq (char-after) ?})
	       (save-excursion
		 (and (c-safe (up-list -1) t)
		      (c-looking-at-special-brace-list))))
	  (forward-char)
	  (skip-syntax-forward "w_"))	; Speedup only.

	 ;; Have we got a '}' after having moved?  If so, stop after the
	 ;; previous token.
	 ((and (eq (char-after) ?})
	       (/= here last))
	  (goto-char last)
	  (throw 'done '(nil . nil)))

	 ;; Stop if we encounter a preprocessor line.  Continue if we
	 ;; hit a naked #
	 ((and c-opt-cpp-prefix
	       (not macro-end)
	       (eq (char-after) ?#)
	       (= (point) (c-point 'boi)))
	  (if (= (point) here)          ; Not a macro, therefore naked #.
	      (forward-char)
	    (throw 'done '(t . macro-boundary))))

	 ;; Stop after a ';', '}', or "};"
	 ((looking-at ";\\|};?")
	  (goto-char (match-end 0))
	  (throw 'done '(nil . nil)))

	 ;; Found a string (this subsumes AWK regexps)?
	 ((looking-at c-string-limit-regexp)
	  (goto-char last)
	  (throw 'done '(t . literal)))

	 (t
	  (forward-char)	  ; Can't fail - we checked (eobp) earlier on.
	  (skip-syntax-forward "w_")	; Speedup only.
	  (when (and macro-end (> (point) macro-end))
	    (goto-char last)
	    (throw 'done (cons (eq (point) here) 'macro-boundary))))
	 )))))

(defun c-one-line-string-p (range)
  ;; Is the literal defined by RANGE a string contained in a single line?
  ;;
  ;; This function might do hidden buffer changes.
  (save-excursion
    (goto-char (car range))
    (and (looking-at c-string-limit-regexp)
	 (progn (skip-chars-forward "^\n" (cdr range))
		(eq (point) (cdr range))))))

(defun c-beginning-of-statement (&optional count lim sentence-flag)
  "Go to the beginning of the innermost C statement.
With prefix arg, go back N - 1 statements.  If already at the
beginning of a statement then go to the beginning of the closest
preceding one, moving into nested blocks if necessary (use
\\[backward-sexp] to skip over a block).  If within or next to a
comment or multiline string, move by sentences instead of statements.

When called from a program, this function takes 3 optional args: the
repetition count, a buffer position limit which is the farthest back
to search for the syntactic context, and a flag saying whether to do
sentence motion in or near comments and multiline strings.

Note that for use in programs, `c-beginning-of-statement-1' is
usually better.  It has much better defined semantics than this one,
which is intended for interactive use, and might therefore change to
be more \"DWIM:ey\"."
  (interactive (list (prefix-numeric-value current-prefix-arg)
		     nil t))
  (if (< count 0)
      (c-end-of-statement (- count) lim sentence-flag)
    (c-save-buffer-state
	((count (or count 1))
	 last ; start point for going back ONE chunk.  Updated each chunk movement.
	 (macro-fence
	  (save-excursion (and (not (bobp)) (c-beginning-of-macro) (point))))
	 res				; result from sub-function call
	 not-bos			; "not beginning-of-statement"
	 (range (c-collect-line-comments (c-literal-limits lim)))) ; (start.end) of current literal or NIL

      ;; Go back one statement at each iteration of the following loop.
      (while (and (/= count 0)
		  (or (not lim) (> (point) lim)))
	;; Go back one "chunk" each time round the following loop, stopping
	;; when we reach a statement boundary, etc.
	(setq last (point))
	(while
	    (cond ; Each arm of this cond returns NIL on reaching a desired
		  ; statement boundary, non-NIL otherwise.
	     ((bobp)
	      (setq count 0)
	      nil)

	     (range		   ; point is within or approaching a literal.
	      (cond
	       ;; Single line string or sentence-flag is null => skip the
	       ;; entire literal.
	       ((or (null sentence-flag)
		    (c-one-line-string-p range))
		(goto-char (car range))
		(setq range (c-ascertain-preceding-literal))
		;; N.B. The following is essentially testing for an AWK regexp
		;; at BOS:
		;; Was the previous non-ws thing an end of statement?
		(save-excursion
		  (if macro-fence
		      (c-backward-comments)
		    (c-backward-syntactic-ws))
		  (not (or (bobp) (c-after-statement-terminator-p)))))

	       ;; Comment inside a statement or a multi-line string.
	       (t (when (setq res ; returns non-nil when we go out of the literal
			      (if (eq (c-literal-type range) 'string)
				  (c-beginning-of-sentence-in-string range)
				(c-beginning-of-sentence-in-comment range)))
		    (setq range (c-ascertain-preceding-literal)))
		  res)))

	     ;; Non-literal code.
	     (t (setq res (c-back-over-illiterals macro-fence))
		(setq not-bos	       ; "not reached beginning-of-statement".
		      (or (= (point) last)
			  (memq (char-after) '(?\) ?\}))
			  (and
			   (car res)
			   ;; We're at a tentative BOS.  The next form goes
			   ;; back over WS looking for an end of previous
			   ;; statement.
			   (not (save-excursion
				  (if macro-fence
				      (c-backward-comments)
				    (c-backward-syntactic-ws))
				  (or (bobp) (c-after-statement-terminator-p)))))))
		;; Are we about to move backwards into or out of a
		;; preprocessor command?  If so, locate its beginning.
		(when (eq (cdr res) 'macro-boundary)
		  (save-excursion
		    (beginning-of-line)
		    (setq macro-fence
			  (and (not (bobp))
			       (progn (c-skip-ws-backward) (c-beginning-of-macro))
			       (point)))))
		;; Are we about to move backwards into a literal?
		(when (memq (cdr res) '(macro-boundary literal))
		  (setq range (c-ascertain-preceding-literal)))
		not-bos))
	  (setq last (point)))

	(if (/= count 0) (setq count (1- count))))
      (c-keep-region-active))))

(defun c-end-of-statement (&optional count lim sentence-flag)
  "Go to the end of the innermost C statement.
With prefix arg, go forward N - 1 statements.  Move forward to the end
of the next statement if already at end, and move into nested blocks
\(use \\[forward-sexp] to skip over a block).  If within or next to a
comment or multiline string, move by sentences instead of statements.

When called from a program, this function takes 3 optional args: the
repetition count, a buffer position limit which is the farthest back
to search for the syntactic context, and a flag saying whether to do
sentence motion in or near comments and multiline strings."
  (interactive (list (prefix-numeric-value current-prefix-arg)
		     nil t))
  (setq count (or count 1))
  (if (< count 0) (c-beginning-of-statement (- count) lim sentence-flag)

    (c-save-buffer-state
	(here ; start point for going forward ONE statement.  Updated each statement.
	 (macro-fence
	  (save-excursion
	    (and (not (eobp)) (c-beginning-of-macro)
		 (progn (c-end-of-macro) (point)))))
	 res
	 (range (c-collect-line-comments (c-literal-limits lim)))) ; (start.end) of current literal or NIL

      ;; Go back/forward one statement at each iteration of the following loop.
      (while (and (/= count 0)
		  (or (not lim) (< (point) lim)))
	(setq here (point))		; ONLY HERE is HERE updated

	;; Go forward one "chunk" each time round the following loop, stopping
	;; when we reach a statement boundary, etc.
	(while
	    (cond    ; Each arm of this cond returns NIL on reaching a desired
		     ; statement boundary, non-NIL otherwise.
	     ((eobp)
	      (setq count 0)
	      nil)

	     (range			; point is within a literal.
	      (cond
	       ;; sentence-flag is null => skip the entire literal.
	       ;; or a Single line string.
	       ((or (null sentence-flag)
		    (c-one-line-string-p range))
		(goto-char (cdr range))
		(setq range (c-ascertain-following-literal))
		;; Is there a virtual semicolon here (e.g. for AWK)?
		(not (c-at-vsemi-p)))

	       ;; Comment or multi-line string.
	       (t (when (setq res ; gets non-nil when we go out of the literal
			      (if (eq (c-literal-type range) 'string)
				  (c-end-of-sentence-in-string range)
				(c-end-of-sentence-in-comment range)))
		    (setq range (c-ascertain-following-literal)))
		  ;; If we've just come forward out of a literal, check for
		  ;; vsemi.  (N.B. AWK can't have a vsemi after a comment, but
		  ;; some other language may do in the future)
		  (and res
		       (not (c-at-vsemi-p))))))

	     ;; Non-literal code.
	     (t (setq res (c-forward-over-illiterals macro-fence
						     (> (point) here)))
		;; Are we about to move forward into or out of a
		;; preprocessor command?
		(when (eq (cdr res) 'macro-boundary)
		  (setq macro-fence
			(save-excursion
			  (if macro-fence
			      (progn
				(end-of-line)
				(and (not (eobp))
				     (progn (c-skip-ws-forward)
					    (c-beginning-of-macro))
				     (progn (c-end-of-macro)
					    (point))))
			    (and (not (eobp))
				 (c-beginning-of-macro)
				 (progn (c-end-of-macro) (point)))))))
		;; Are we about to move forward into a literal?
		(when (memq (cdr res) '(macro-boundary literal))
		  (setq range (c-ascertain-following-literal)))
		(car res))))

	(if (/= count 0) (setq count (1- count))))
      (c-keep-region-active))))

\f
;; set up electric character functions to work with pending-del,
;; (a.k.a. delsel) mode.  All symbols get the t value except
;; the functions which delete, which gets 'supersede, and (from Emacs
;; 25) `c-electric-brace' and `c-electric-paren' get special handling
;; so as to work gracefully with `electric-pair-mode'.
(mapc
 (function
  (lambda (sym)
    (put sym 'delete-selection t)	; for delsel (Emacs)
    (put sym 'pending-delete t)))	; for pending-del (XEmacs)
 '(c-electric-pound
   c-electric-slash
   c-electric-star
   c-electric-semi&comma
   c-electric-lt-gt
   c-electric-colon))
(mapc
 (function
  (lambda (sym)
    (put sym 'delete-selection (if (fboundp 'delete-selection-uses-region-p)
				   'delete-selection-uses-region-p
				 t))
    (put sym 'pending-delete t)))
 '(c-electric-brace
   c-electric-paren))
(put 'c-electric-delete    'delete-selection 'supersede) ; delsel
(put 'c-electric-delete    'pending-delete   'supersede) ; pending-del
(put 'c-electric-backspace 'delete-selection 'supersede) ; delsel
(put 'c-electric-backspace 'pending-delete   'supersede) ; pending-del
(put 'c-electric-delete-forward 'delete-selection 'supersede) ; delsel
(put 'c-electric-delete-forward 'pending-delete   'supersede) ; pending-del

\f
;; Inserting/indenting comments
(defun c-calc-comment-indent (entry)
  ;; This function might do hidden buffer changes.
  (if (symbolp entry)
      (setq entry (or (assq entry c-indent-comment-alist)
		      (assq 'other c-indent-comment-alist)
		      '(default . (column . nil)))))
  (let ((action (car (cdr entry)))
	(value (cdr (cdr entry)))
	(col (current-column)))
    (cond ((eq action 'space)
	   (+ col value))
	  ((eq action 'column)
	   (unless value (setq value comment-column))
	   (if (bolp)
	       ;; Do not pad with one space if we're at bol.
	       value
	     (max (1+ col) value)))
	  ((eq action 'align)
	   (or (save-excursion
		 (beginning-of-line)
		 (unless (bobp)
		   (backward-char)
		   (let ((lim (c-literal-limits (c-point 'bol) t)))
		     (when (consp lim)
		       (goto-char (car lim))
		       (when (looking-at "/[/*]") ; FIXME!!!  Adapt for AWK! (ACM, 2005/11/18)
			 ;; Found comment to align with.
			 (if (bolp)
			     ;; Do not pad with one space if we're at bol.
			     0
			   (max (1+ col) (current-column))))))))
	       ;; Recurse to handle value as a new spec.
	       (c-calc-comment-indent (cdr entry)))))))

(defun c-comment-indent ()
  "Used by `indent-for-comment' to create and indent comments.
See `c-indent-comment-alist' for a description."
  (save-excursion
    (end-of-line)
    (c-save-buffer-state
	  ((eot (let ((lim (c-literal-limits (c-point 'bol) t)))
		  (or (when (consp lim)
			(goto-char (car lim))
			(when (looking-at "/[/*]")
			  (skip-chars-backward " \t")
			  (point)))
		      (progn
			(skip-chars-backward " \t")
			(point)))))
	   (line-type
	    (cond ((looking-at "^/[/*]")
		   'anchored-comment)
		  ((progn (beginning-of-line)
			  (eq (point) eot))
		   'empty-line)
		  ((progn (back-to-indentation)
			  (and (eq (char-after) ?})
			       (eq (point) (1- eot))))
		   'end-block)
		  ((and (looking-at "#[ \t]*\\(endif\\|else\\)")
			(eq (match-end 0) eot))
		   'cpp-end-block)
		  (t
		   'other)))
	   case-fold-search)
      (if (and (memq line-type '(anchored-comment empty-line))
	       c-indent-comments-syntactically-p)
	  (let ((c-syntactic-context (c-guess-basic-syntax)))
	    ;; BOGOSITY ALERT: if we're looking at the eol, its
	    ;; because indent-for-comment hasn't put the comment-start
	    ;; in the buffer yet.  this will screw up the syntactic
	    ;; analysis so we kludge in the necessary info.  Another
	    ;; kludge is that if we're at the bol, then we really want
	    ;; to ignore any anchoring as specified by
	    ;; c-comment-only-line-offset since it doesn't apply here.
	    (if (eolp)
		(c-add-syntax 'comment-intro))
	    (let ((c-comment-only-line-offset
		   (if (consp c-comment-only-line-offset)
		       c-comment-only-line-offset
		     (cons c-comment-only-line-offset
			   c-comment-only-line-offset))))
	      (c-get-syntactic-indentation c-syntactic-context)))
	(goto-char eot)
	(c-calc-comment-indent line-type)))))

\f
;; used by outline-minor-mode
(defun c-outline-level ()
  (let (buffer-invisibility-spec);; This so that `current-column' DTRT
				 ;; in otherwise-hidden text.
    (save-excursion
      (skip-chars-forward "\t ")
      (current-column))))

\f
;; Movement by CPP conditionals.
(defun c-up-conditional (count)
  "Move back to the containing preprocessor conditional, leaving mark behind.
A prefix argument acts as a repeat count.  With a negative argument,
move forward to the end of the containing preprocessor conditional.

\"#elif\" is treated like \"#else\" followed by \"#if\", so the
function stops at them when going backward, but not when going
forward."
  (interactive "p")
  (let ((new-point (c-scan-conditionals (- count) -1)))
    (push-mark)
    (goto-char new-point))
  (c-keep-region-active))

(defun c-up-conditional-with-else (count)
  "Move back to the containing preprocessor conditional, including \"#else\".
Just like `c-up-conditional', except it also stops at \"#else\"
directives."
  (interactive "p")
  (let ((new-point (c-scan-conditionals (- count) -1 t)))
    (push-mark)
    (goto-char new-point))
  (c-keep-region-active))

(defun c-down-conditional (count)
  "Move forward into the next preprocessor conditional, leaving mark behind.
A prefix argument acts as a repeat count.  With a negative argument,
move backward into the previous preprocessor conditional.

\"#elif\" is treated like \"#else\" followed by \"#if\", so the
function stops at them when going forward, but not when going
backward."
  (interactive "p")
  (let ((new-point (c-scan-conditionals count 1)))
    (push-mark)
    (goto-char new-point))
  (c-keep-region-active))

(defun c-down-conditional-with-else (count)
  "Move forward into the next preprocessor conditional, including \"#else\".
Just like `c-down-conditional', except it also stops at \"#else\"
directives."
  (interactive "p")
  (let ((new-point (c-scan-conditionals count 1 t)))
    (push-mark)
    (goto-char new-point))
  (c-keep-region-active))

(defun c-backward-conditional (count &optional target-depth with-else)
  "Move back across a preprocessor conditional, leaving mark behind.
A prefix argument acts as a repeat count.  With a negative argument,
move forward across a preprocessor conditional.

The optional arguments TARGET-DEPTH and WITH-ELSE are historical,
and have the same meanings as in `c-scan-conditionals'.  If you
are calling c-forward-conditional from a program, you might want
to call `c-scan-conditionals' directly instead."
  (interactive "p")
  (let ((new-point (c-scan-conditionals (- count) target-depth with-else)))
    (push-mark)
    (goto-char new-point))
  (c-keep-region-active))

(defun c-forward-conditional (count &optional target-depth with-else)
  "Move forward across a preprocessor conditional, leaving mark behind.
A prefix argument acts as a repeat count.  With a negative argument,
move backward across a preprocessor conditional.

If there aren't enough conditionals after (or before) point, an
error is signaled.

\"#elif\" is treated like \"#else\" followed by \"#if\", except that
the nesting level isn't changed when tracking subconditionals.

The optional arguments TARGET-DEPTH and WITH-ELSE are historical,
and have the same meanings as in `c-scan-conditionals'.  If you
are calling c-forward-conditional from a program, you might want
to call `c-scan-conditionals' directly instead."
  (interactive "p")
  (let ((new-point (c-scan-conditionals count target-depth with-else)))
    (push-mark)
    (goto-char new-point)))

(defun c-scan-conditionals (count &optional target-depth with-else)
  "Scan forward across COUNT preprocessor conditionals.
With a negative argument, scan backward across preprocessor
conditionals.  Return the end position.  Point is not moved.

If there aren't enough preprocessor conditionals, throw an error.

\"#elif\" is treated like \"#else\" followed by \"#if\", except that
the nesting level isn't changed when tracking subconditionals.

The optional argument TARGET-DEPTH specifies the wanted nesting depth
after each scan.  E.g. if TARGET-DEPTH is -1, the end position will be
outside the enclosing conditional.  A non-integer non-nil TARGET-DEPTH
counts as -1.

If the optional argument WITH-ELSE is non-nil, \"#else\" directives
are treated as conditional clause limits.  Normally they are ignored."
  (let* ((forward (> count 0))
	 (increment (if forward -1 1))
	 (search-function (if forward 're-search-forward 're-search-backward))
	 new case-fold-search)
    (unless (integerp target-depth)
      (setq target-depth (if target-depth -1 0)))
    (save-excursion
      (while (/= count 0)
	(let ((depth 0)
	      ;; subdepth is the depth in "uninteresting" subtrees,
	      ;; i.e. those that takes us farther from the target
	      ;; depth instead of closer.
	      (subdepth 0)
	      found)
	  (save-excursion
	    ;; Find the "next" significant line in the proper direction.
	    (while (and (not found)
			;; Rather than searching for a # sign that
			;; comes at the beginning of a line aside from
			;; whitespace, search first for a string
			;; starting with # sign.  Then verify what
			;; precedes it.  This is faster on account of
			;; the fastmap feature of the regexp matcher.
			(funcall search-function
				 "#[ \t]*\\(if\\|elif\\|endif\\|else\\)"
				 nil t))
	      (beginning-of-line)
	      ;; Now verify it is really a preproc line.
	      (if (looking-at "^[ \t]*#[ \t]*\\(if\\|elif\\|endif\\|else\\)")
		  (let (dchange (directive (match-string 1)))
		    (cond ((string= directive "if")
			   (setq dchange (- increment)))
			  ((string= directive "endif")
			   (setq dchange increment))
			  ((= subdepth 0)
			   ;; When we're not in an "uninteresting"
			   ;; subtree, we might want to act on "elif"
			   ;; and "else" too.
			   (if (cond (with-else
				      ;; Always move toward the target depth.
				      (setq dchange
					    (if (> target-depth 0) 1 -1)))
				     ((string= directive "elif")
				      (setq dchange (- increment))))
			       ;; Ignore the change if it'd take us
			       ;; into an "uninteresting" subtree.
			       (if (eq (> dchange 0) (<= target-depth 0))
				   (setq dchange nil)))))
		    (when dchange
		      (when (or (/= subdepth 0)
				(eq (> dchange 0) (<= target-depth 0)))
			(setq subdepth (+ subdepth dchange)))
		      (setq depth (+ depth dchange))
		      ;; If we are trying to move across, and we find an
		      ;; end before we find a beginning, get an error.
		      (if (and (< depth target-depth) (< dchange 0))
			  (error (if forward
				     "No following conditional at this level"
				   "No previous conditional at this level"))))
		    ;; When searching forward, start from next line so
		    ;; that we don't find the same line again.
		    (if forward (forward-line 1))
		    ;; We found something if we've arrived at the
		    ;; target depth.
		    (if (and dchange (= depth target-depth))
			(setq found (point))))
		;; else
		(if forward (forward-line 1)))))
	  (or found
	      (error "No containing preprocessor conditional"))
	  (goto-char (setq new found)))
	(setq count (+ count increment))))
    (c-keep-region-active)
    new))

\f
;; commands to indent lines, regions, defuns, and expressions
(defun c-indent-command (&optional arg)
  "Indent current line as C code, and/or insert some whitespace.

If `c-tab-always-indent' is t, always just indent the current line.
If nil, indent the current line only if point is at the left margin or
in the line's indentation; otherwise insert some whitespace[*].  If
other than nil or t, then some whitespace[*] is inserted only within
literals (comments and strings), but the line is always reindented.

If `c-syntactic-indentation' is t, indentation is done according to
the syntactic context.  A numeric argument, regardless of its value,
means indent rigidly all the lines of the expression starting after
point so that this line becomes properly indented.  The relative
indentation among the lines of the expression is preserved.

If `c-syntactic-indentation' is nil, the line is just indented one
step according to `c-basic-offset'.  In this mode, a numeric argument
indents a number of such steps, positive or negative, and an empty
prefix argument is equivalent to -1.

  [*] The amount and kind of whitespace inserted is controlled by the
  variable `c-insert-tab-function', which is called to do the actual
  insertion of whitespace.  Normally the function in this variable
  just inserts a tab character, or the equivalent number of spaces,
  depending on the variable `indent-tabs-mode'."

  (interactive "P")
  (let ((indent-function
	 (if c-syntactic-indentation
	     (symbol-function 'indent-according-to-mode)
	   (lambda ()
	     (let ((c-macro-start c-macro-start)
		   (steps (if (equal arg '(4))
			      -1
			    (prefix-numeric-value arg))))
	       (c-shift-line-indentation (* steps c-basic-offset))
	       (when (and c-auto-align-backslashes
			  (save-excursion
			    (end-of-line)
			    (eq (char-before) ?\\))
			  (c-query-and-set-macro-start))
		 ;; Realign the line continuation backslash if inside a macro.
		 (c-backslash-region (point) (point) nil t)))
	     ))))
    (if (and c-syntactic-indentation arg)
	;; If c-syntactic-indentation and got arg, always indent this
	;; line as C and shift remaining lines of expression the same
	;; amount.
	(let ((shift-amt (save-excursion
			   (back-to-indentation)
			   (current-column)))
	      beg end)
	  (c-indent-line)
	  (setq shift-amt (- (save-excursion
			       (back-to-indentation)
			       (current-column))
			     shift-amt))
	  (save-excursion
	    (if (eq c-tab-always-indent t)
		(beginning-of-line))	; FIXME!!! What is this here for?  ACM 2005/10/31
	    (setq beg (point))
	    (c-forward-sexp 1)
	    (setq end (point))
	    (goto-char beg)
	    (forward-line 1)
	    (setq beg (point)))
	  (if (> end beg)
	      (indent-code-rigidly beg end shift-amt "#")))
      ;; Else use c-tab-always-indent to determine behavior.
      (cond
       ;; CASE 1: indent when at column zero or in line's indentation,
       ;; otherwise insert a tab
       ((not c-tab-always-indent)
	(if (save-excursion
	      (skip-chars-backward " \t")
	      (not (bolp)))
	    (funcall c-insert-tab-function)
	  (funcall indent-function)))
       ;; CASE 2: just indent the line
       ((eq c-tab-always-indent t)
	(funcall indent-function))
       ;; CASE 3: if in a literal, insert a tab, but always indent the
       ;; line
       (t
	(if (c-save-buffer-state () (c-in-literal))
	    (funcall c-insert-tab-function))
	(funcall indent-function)
	)))))

(defun c-indent-exp (&optional shutup-p)
  "Indent each line in the balanced expression following point syntactically.
If optional SHUTUP-P is non-nil, no errors are signaled if no
balanced expression is found."
  (interactive "*P")
  (let ((here (point-marker))
	end)
    (set-marker-insertion-type here t)
    (unwind-protect
	(let ((start (save-restriction
		       ;; Find the closest following open paren that
		       ;; ends on another line.
		       (narrow-to-region (point-min) (c-point 'eol))
		       (let (beg (end (point)))
			 (while (and (setq beg (c-down-list-forward end))
				     (setq end (c-up-list-forward beg))))
			 (and beg
			      (eq (char-syntax (char-before beg)) ?\()
			      (1- beg))))))
	  ;; sanity check
	  (if (not start)
	     (unless shutup-p
	       (error "Cannot find start of balanced expression to indent"))
	    (goto-char start)
	    (setq end (c-safe (scan-sexps (point) 1)))
	    (if (not end)
		(unless shutup-p
		  (error "Cannot find end of balanced expression to indent"))
	      (forward-line)
	      (if (< (point) end)
		  (c-indent-region (point) end)))))
      (goto-char here)
      (set-marker here nil))))

(defun c-indent-defun ()
  "Indent the current top-level declaration or macro syntactically.
In the macro case this also has the effect of realigning any line
continuation backslashes, unless `c-auto-align-backslashes' is nil."
  (interactive "*")
  (let ((here (point-marker)) decl-limits case-fold-search)
    (unwind-protect
	(progn
	  (c-save-buffer-state nil
	    ;; We try to be line oriented, unless there are several
	    ;; declarations on the same line.
	    (if (looking-at c-syntactic-eol)
		(c-backward-token-2 1 nil (c-point 'bol))
	      (c-forward-token-2 0 nil (c-point 'eol)))
	    (setq decl-limits (c-declaration-limits nil)))
	  (if decl-limits
	      (c-indent-region (car decl-limits)
			       (cdr decl-limits))))
      (goto-char here)
      (set-marker here nil))))

(defun c-indent-region (start end &optional quiet)
  "Indent syntactically every line whose first char is between START
and END inclusive.  If the optional argument QUIET is non-nil then no
syntactic errors are reported, even if `c-report-syntactic-errors' is
non-nil."
  (save-excursion
    (goto-char end)
    (skip-chars-backward " \t\n\r\f\v")
    (setq end (point))
    (goto-char start)
    ;; Advance to first nonblank line.
    (beginning-of-line)
    (skip-chars-forward " \t\n\r\f\v")
    (setq start (point))
    (beginning-of-line)
    (setq c-parsing-error
	  (or (let ((endmark (copy-marker end))
		    (c-parsing-error nil)
		    ;; shut up any echo msgs on indiv lines
		    (c-echo-syntactic-information-p nil)
		    (ml-macro-start	; Start pos of multi-line macro.
		     (and (c-save-buffer-state ()
			    (save-excursion (c-beginning-of-macro)))
			  (eq (char-before (c-point 'eol)) ?\\)
			  start))
		    (c-fix-backslashes nil)
		    syntax)
		(unwind-protect
		    (progn
		      (c-progress-init start end 'c-indent-region)

		      (while (and (bolp) ;; One line each time round the loop.
				  (not (eobp))
				  (< (point) endmark))
			;; update progress
			(c-progress-update)
			;; skip empty lines
			(unless (or (looking-at "\\s *$")
				    (and ml-macro-start (looking-at "\\s *\\\\$")))
			  ;; Get syntax and indent.
			  (c-save-buffer-state nil
			    (setq syntax (c-guess-basic-syntax)))
			  (c-indent-line syntax t t))

			(if ml-macro-start
			    ;; End of current multi-line macro?
			    (when (and c-auto-align-backslashes
				       (not (eq (char-before (c-point 'eol)) ?\\)))
			      ;; Fixup macro backslashes.
			      (c-backslash-region ml-macro-start (c-point 'bonl) nil)
			      (setq ml-macro-start nil))
			  ;; New multi-line macro?
			  (if (and (assq 'cpp-macro syntax)
				   (eq (char-before (c-point 'eol)) ?\\))
			    (setq ml-macro-start (point))))

			(forward-line))

		      (if (and ml-macro-start c-auto-align-backslashes)
			  (c-backslash-region ml-macro-start (c-point 'bopl) nil t)))
		  (set-marker endmark nil)
		  (c-progress-fini 'c-indent-region))
		(c-echo-parsing-error quiet))
	      c-parsing-error))))

(defun c-fn-region-is-active-p ()
  ;; Function version of the macro for use in places that aren't
  ;; compiled, e.g. in the menus.
  (c-region-is-active-p))

(defun c-indent-line-or-region (&optional arg region)
  "Indent active region, current line, or block starting on this line.
In Transient Mark mode, when the region is active, reindent the region.
Otherwise, with a prefix argument, rigidly reindent the expression
starting on the current line.
Otherwise reindent just the current line."
  (interactive
   (list current-prefix-arg (c-region-is-active-p)))
  (if region
      (c-indent-region (region-beginning) (region-end))
    (c-indent-command arg)))
\f
;; for progress reporting
(defvar c-progress-info nil)

(defun c-progress-init (start end context)
  (cond
   ;; Be silent
   ((not c-progress-interval))
   ;; Start the progress update messages.  If this Emacs doesn't have
   ;; a built-in timer, just be dumb about it.
   ((not (fboundp 'current-time))
    (message "Indenting region... (this may take a while)"))
   ;; If progress has already been initialized, do nothing. otherwise
   ;; initialize the counter with a vector of:
   ;;     [start end lastsec context]
   (c-progress-info)
   (t (setq c-progress-info (vector start
				    (save-excursion
				      (goto-char end)
				      (point-marker))
				    (time-convert nil 'integer)
				    context))
      (message "Indenting region..."))
   ))

(defun c-progress-update ()
  (if (not (and c-progress-info c-progress-interval))
      nil
    (let ((now (time-convert nil 'integer))
	  (start (aref c-progress-info 0))
	  (end (aref c-progress-info 1))
	  (lastsecs (aref c-progress-info 2)))
      ;; should we update?  currently, update happens every 2 seconds,
      ;; what's the right value?
      (if (< c-progress-interval (- now lastsecs))
	  (progn
	    (message "Indenting region... (%d%% complete)"
		     (floor (* 100.0 (- (point) start)) (- end start)))
	    (aset c-progress-info 2 now)))
      )))

(defun c-progress-fini (context)
  (if (not c-progress-interval)
      nil
    (if (or (eq context (aref c-progress-info 3))
	    (eq context t))
	(progn
	  (set-marker (aref c-progress-info 1) nil)
	  (setq c-progress-info nil)
	  (message "Indenting region... done")))))


\f
;;; This page handles insertion and removal of backslashes for C macros.

(defun c-backslash-region (from to delete-flag &optional line-mode)
  "Insert, align, or delete end-of-line backslashes on the lines in the region.
With no argument, inserts backslashes and aligns existing backslashes.
With an argument, deletes the backslashes.  The backslash alignment is
done according to the settings in `c-backslash-column',
`c-backslash-max-column' and `c-auto-align-backslashes'.

This function does not modify blank lines at the start of the region.
If the region ends at the start of a line and the macro doesn't
continue below it, the backslash (if any) at the end of the previous
line is deleted.

You can put the region around an entire macro definition and use this
command to conveniently insert and align the necessary backslashes."
  (interactive "*r\nP")
  (let ((endmark (make-marker))
	;; Keep the backslash trimming functions from changing the
	;; whitespace around point, since in this case it's only the
	;; position of point that tells the indentation of the line.
	(point-pos (if (save-excursion
			 (skip-chars-backward " \t")
			 (and (bolp) (looking-at "[ \t]*\\\\?$")))
		       (point-marker)
		     (point-min)))
	column longest-line-col bs-col-after-end)
    (save-excursion
      (goto-char to)
      (if (and (not line-mode) (bobp))
	  ;; Nothing to do if to is at bob, since we should back up
	  ;; and there's no line to back up to.
	  nil
	(when (and (not line-mode) (bolp))
	  ;; Do not back up the to line if line-mode is set, to make
	  ;; e.g. c-newline-and-indent consistent regardless whether
	  ;; the (newline) call leaves point at bol or not.
	  (backward-char)
	  (setq to (point)))
	(if delete-flag
	    (progn
	      (set-marker endmark (point))
	      (goto-char from)
	      (c-delete-backslashes-forward endmark point-pos))
	  ;; Set bs-col-after-end to the column of any backslash
	  ;; following the region, or nil if there is none.
	  (setq bs-col-after-end
		(and (progn (end-of-line)
			    (eq (char-before) ?\\))
		     (= (forward-line 1) 0)
		     (progn (end-of-line)
			    (eq (char-before) ?\\))
		     (1- (current-column))))
	  (when line-mode
	    ;; Back up the to line if line-mode is set, since the line
	    ;; after the newly inserted line break should not be
	    ;; touched in c-newline-and-indent.
	    (setq to (max from (or (c-safe (c-point 'eopl)) from)))
	    (unless bs-col-after-end
	      ;; Set bs-col-after-end to non-nil in any case, since we
	      ;; do not want to delete the backslash at the last line.
	      (setq bs-col-after-end t)))
	  (if (and line-mode
		   (not c-auto-align-backslashes))
	      (goto-char from)
	    ;; Compute the smallest column number past the ends of all
	    ;; the lines.
	    (setq longest-line-col 0)
	    (goto-char to)
	    (if bs-col-after-end
		;; Include one more line in the max column
		;; calculation, since the to line will be backslashed
		;; too.
		(forward-line 1))
	    (end-of-line)
	    (while (and (>= (point) from)
			(progn
			  (if (eq (char-before) ?\\)
			      (forward-char -1))
			  (skip-chars-backward " \t")
			  (setq longest-line-col (max longest-line-col
						      (1+ (current-column))))
			  (beginning-of-line)
			  (not (bobp))))
	      (backward-char))
	    ;; Try to align with surrounding backslashes.
	    (goto-char from)
	    (beginning-of-line)
	    (if (and (not (bobp))
		     (progn (backward-char)
			    (eq (char-before) ?\\)))
		(progn
		  (setq column (1- (current-column)))
		  (if (numberp bs-col-after-end)
		      ;; Both a preceding and a following backslash.
		      ;; Choose the greatest of them.
		      (setq column (max column bs-col-after-end)))
		  (goto-char from))
	      ;; No preceding backslash.  Try to align with one
	      ;; following the region.  Disregard the backslash at the
	      ;; to line since it's likely to be bogus (e.g. when
	      ;; called from c-newline-and-indent).
	      (if (numberp bs-col-after-end)
		  (setq column bs-col-after-end))
	      ;; Don't modify blank lines at start of region.
	      (goto-char from)
	      (while (and (< (point) to) (bolp) (eolp))
		(forward-line 1)))
	    (if (and column (< column longest-line-col))
		;; Don't try to align with surrounding backslashes if
		;; any line is too long.
		(setq column nil))
	    (unless column
	      ;; Impose minimum limit and tab width alignment only if
	      ;; we can't align with surrounding backslashes.
	      (if (> (% longest-line-col tab-width) 0)
		  (setq longest-line-col
			(* (/ (+ longest-line-col tab-width -1)
			      tab-width)
			   tab-width)))
	      (setq column (max c-backslash-column
				longest-line-col)))
	    ;; Always impose maximum limit.
	    (setq column (min column c-backslash-max-column)))
	  (if bs-col-after-end
	      ;; Add backslashes on all lines if the macro continues
	      ;; after the to line.
	      (progn
		(set-marker endmark to)
		(c-append-backslashes-forward endmark column point-pos))
	    ;; Add backslashes on all lines except the last, and
	    ;; remove any on the last line.
	    (if (save-excursion
		  (goto-char to)
		  (beginning-of-line)
		  (if (not (bobp))
		      (set-marker endmark (1- (point)))))
		(progn
		  (c-append-backslashes-forward endmark column point-pos)
		  ;; The function above leaves point on the line
		  ;; following endmark.
		  (set-marker endmark (point)))
	      (set-marker endmark to))
	    (c-delete-backslashes-forward endmark point-pos)))))
    (set-marker endmark nil)
    (if (markerp point-pos)
	(set-marker point-pos nil))))

(defun c-append-backslashes-forward (to-mark column point-pos)
  (let ((state (parse-partial-sexp (c-point 'bol) (point))))
    (if column
	(while
	    (and
	     (<= (point) to-mark)

	     (let ((start (point)) (inserted nil) end col)
	       (end-of-line)
	       (unless (eq (char-before) ?\\)
		 (insert ?\\)
		 (setq inserted t))
	       (setq state (parse-partial-sexp
			    start (point) nil nil state))
	       (backward-char)
	       (setq col (current-column))

	       ;; Avoid unnecessary changes of the buffer.
	       (cond ((and (not inserted) (nth 3 state))
		      ;; Don't realign backslashes in string literals
		      ;; since that would change them.
		      )

		     ((< col column)
		      (delete-region
		       (point)
		       (progn
			 (skip-chars-backward
			  " \t" (if (>= (point) point-pos) point-pos))
			 (point)))
		      (indent-to column))

		     ((and (= col column)
			   (memq (char-before) '(?\  ?\t))))

		     ((progn
			(setq end (point))
			(or (/= (skip-chars-backward
				 " \t" (if (>= (point) point-pos) point-pos))
				-1)
			    (/= (char-after) ?\ )))
		      (delete-region (point) end)
		      (indent-to column 1)))

	       (zerop (forward-line 1)))
	     (bolp)))			; forward-line has funny behavior at eob.

      ;; Make sure there are backslashes with at least one space in
      ;; front of them.
      (while
	  (and
	   (<= (point) to-mark)

	   (let ((start (point)))
	     (end-of-line)
	     (setq state (parse-partial-sexp
			  start (point) nil nil state))

	     (if (eq (char-before) ?\\)
		 (unless (nth 3 state)
		   (backward-char)
		   (unless (and (memq (char-before) '(?\  ?\t))
				(/= (point) point-pos))
		     (insert ?\ )))

	       (if (and (memq (char-before) '(?\  ?\t))
			(/= (point) point-pos))
		   (insert ?\\)
		 (insert ?\  ?\\)))

	     (zerop (forward-line 1)))
	   (bolp))))))			; forward-line has funny behavior at eob.

(defun c-delete-backslashes-forward (to-mark point-pos)
  (while
      (and (<= (point) to-mark)
	   (progn
	     (end-of-line)
	     (if (eq (char-before) ?\\)
		 (delete-region
		  (point)
		  (progn (backward-char)
			 (skip-chars-backward " \t" (if (>= (point) point-pos)
							point-pos))
			 (point))))
	     (zerop (forward-line 1)))
	   (bolp))))			; forward-line has funny behavior at eob.


\f
;;; Line breaking and paragraph filling.

(defvar c-auto-fill-prefix t)
(defvar c-lit-limits nil)
(defvar c-lit-type nil)

;; The filling code is based on a simple theory; leave the intricacies
;; of the text handling to the currently active mode for that
;; (e.g. adaptive-fill-mode or filladapt-mode) and do as little as
;; possible to make them work correctly wrt the comment and string
;; separators, one-line paragraphs etc.  Unfortunately, when it comes
;; to it, there's quite a lot of special cases to handle which makes
;; the code anything but simple.  The intention is that it will work
;; with any well-written text filling package that preserves a fill
;; prefix.
;;
;; We temporarily mask comment starters and enders as necessary for
;; the filling code to do its job on a seemingly normal text block.
;; We do _not_ mask the fill prefix, so it's up to the filling code to
;; preserve it correctly (especially important when filling C++ style
;; line comments).  By default, we set up and use adaptive-fill-mode,
;; which is standard in all supported Emacs flavors.

(defun c-guess-fill-prefix (lit-limits lit-type)
  ;; Determine the appropriate comment fill prefix for a block or line
  ;; comment.  Return a cons of the prefix string and the column where
  ;; it ends.  If fill-prefix is set, it'll override.  Note that this
  ;; function also uses the value of point in some heuristics.
  ;;
  ;; This function might do hidden buffer changes.

  (let* ((here (point))
	 (prefix-regexp (concat "[ \t]*\\("
				c-current-comment-prefix
				"\\)[ \t]*"))
	 (comment-start-regexp (if (eq lit-type 'c++)
				   prefix-regexp
				 comment-start-skip))
	 prefix-line comment-prefix res comment-text-end)

    (cond
     (fill-prefix
      (setq res (cons fill-prefix
		      ;; Ugly way of getting the column after the fill
		      ;; prefix; it'd be nice with a current-column
		      ;; that works on strings..
		      (let ((start (point)))
			(unwind-protect
			    (progn
			      (insert-and-inherit "\n" fill-prefix)
			      (current-column))
			  (delete-region start (point)))))))

     ((eq lit-type 'c++)
      (save-excursion
	;; Set fallback for comment-prefix if none is found.
	(setq comment-prefix "// "
	      comment-text-end (cdr lit-limits))

	(beginning-of-line)
	(if (> (point) (car lit-limits))
	    ;; The current line is not the comment starter, so the
	    ;; comment has more than one line, and it can therefore be
	    ;; used to find the comment fill prefix.
	    (setq prefix-line (point))

	  (goto-char (car lit-limits))
	  (if (and (= (forward-line 1) 0)
		   (< (point) (cdr lit-limits)))
	      ;; The line after the comment starter is inside the
	      ;; comment, so we can use it.
	      (setq prefix-line (point))

	    ;; The comment is only one line.  Take the comment prefix
	    ;; from it and keep the indentation.
	    (goto-char (car lit-limits))
	    (if (looking-at prefix-regexp)
		(goto-char (match-end 0))
	      (forward-char 2)
	      (skip-chars-forward " \t"))

	    (let (str col)
	      (if (eq (c-point 'boi) (car lit-limits))
		  ;; There is only whitespace before the comment
		  ;; starter; take the prefix straight from this line.
		  (setq str (buffer-substring-no-properties
			     (c-point 'bol) (point))
			col (current-column))

		;; There is code before the comment starter, so we
		;; have to temporarily insert and indent a new line to
		;; get the right space/tab mix in the indentation.
		(let ((prefix-len (- (point) (car lit-limits)))
		      tmp)
		  (unwind-protect
		      (progn
			(goto-char (car lit-limits))
			(indent-to (prog1 (current-column)
				     (insert ?\n)))
			(setq tmp (point))
			(forward-char prefix-len)
			(setq str (buffer-substring-no-properties
				   (c-point 'bol) (point))
			      col (current-column)))
		    (delete-region (car lit-limits) tmp))))

	      (setq res
		    (if (or (string-match "\\s \\'" str) (not (eolp)))
			(cons str col)
		      ;; The prefix ends the line with no whitespace
		      ;; after it.  Default to a single space.
		      (cons (concat str " ") (1+ col))))
	      )))))

     (t
      (setq comment-text-end
	    (save-excursion
	      (goto-char (- (cdr lit-limits) 2))
	      (if (looking-at "\\*/") (point) (cdr lit-limits))))

      (save-excursion
	(beginning-of-line)
	(if (and (> (point) (car lit-limits))
		 (not (and (looking-at "[ \t]*\\*/")
			   (eq (cdr lit-limits) (match-end 0)))))
	    ;; The current line is not the comment starter and
	    ;; contains more than just the ender, so it's good enough
	    ;; to be used for the comment fill prefix.
	    (setq prefix-line (point))
	  (goto-char (car lit-limits))

	  (cond ((or (/= (forward-line 1) 0)
		     (>= (point) (cdr lit-limits))
		     (and (looking-at "[ \t]*\\*/")
			  (eq (cdr lit-limits) (match-end 0)))
		     (and (looking-at prefix-regexp)
			  (<= (1- (cdr lit-limits)) (match-end 0))))
		 ;; The comment is either one line or the next line contains
		 ;; just the comment ender.  In this case we have no
		 ;; information about a suitable comment prefix, so we resort
		 ;; to c-block-comment-prefix.
		 (setq comment-prefix (or c-block-comment-prefix "")))

		((< here (point))
		 ;; The point was on the comment opener line, so we might want
		 ;; to treat this as a not yet closed comment.

		 (if (and (match-beginning 1)
			  (/= (match-beginning 1) (match-end 1)))
		     ;; Above `prefix-regexp' matched a nonempty prefix on the
		     ;; second line, so let's use it.  Normally it should do
		     ;; to set `prefix-line' and let the code below pick up
		     ;; the whole prefix, but if there's no text after the
		     ;; match then it will probably fall back to no prefix at
		     ;; all if the comment isn't closed yet, so in that case
		     ;; it's better to force use of the prefix matched now.
		     (if (= (match-end 0) (c-point 'eol))
			 (setq comment-prefix (match-string 1))
		       (setq prefix-line (point)))

		   ;; There's no nonempty prefix on the line after the
		   ;; comment opener.  If the line is empty, or if the
		   ;; text on it has less or equal indentation than the
		   ;; comment starter we assume it's an unclosed
		   ;; comment starter, i.e. that
		   ;; `c-block-comment-prefix' should be used.
		   ;; Otherwise we assume it's a closed comment where
		   ;; the prefix really is the empty string.
		   ;; E.g. this is an unclosed comment:
		   ;;
		   ;;     /*
		   ;;     foo
		   ;;
		   ;; But this is not:
		   ;;
		   ;;     /*
		   ;;       foo
		   ;;     */
		   ;;
		   ;; (Looking for the presence of the comment closer
		   ;; rarely works since it's probably the closer of
		   ;; some comment further down when the comment
		   ;; really is unclosed.)
		   (if (<= (save-excursion (back-to-indentation)
					   (current-column))
			   (save-excursion (goto-char (car lit-limits))
					   (current-column)))
		       (setq comment-prefix (or c-block-comment-prefix ""))
		     (setq prefix-line (point)))))

		(t
		 ;; Otherwise the line after the comment starter is good
		 ;; enough to find the prefix in.
		 (setq prefix-line (point))))

	  (when comment-prefix
	    ;; Haven't got the comment prefix on any real line that we
	    ;; can take it from, so we have to temporarily insert
	    ;; `comment-prefix' on a line and indent it to find the
	    ;; correct column and the correct mix of tabs and spaces.
	    (setq res
		  (let (tmp-pre tmp-post at-close)
		    (unwind-protect
			(progn

			  (goto-char (car lit-limits))
			  (if (looking-at comment-start-regexp)
			      (progn
				(goto-char (min (match-end 0)
						comment-text-end))
				(setq
				 at-close
				 (looking-at c-block-comment-ender-regexp)))
			    (forward-char 2)
			    (skip-chars-forward " \t"))

			  (when (eq (char-syntax (char-before)) ?\ )
			    ;; If there's ws on the current line, we'll use it
			    ;; instead of what's ending comment-prefix.
			    (setq comment-prefix
				  (concat (substring comment-prefix
						     0 (string-match
							"\\s *\\'"
							comment-prefix))
					  (buffer-substring-no-properties
					   (save-excursion
					     (skip-chars-backward " \t")
					     (point))
					   (point))))
			    ;; If hard up against the comment ender, the
			    ;; prefix must end in at least two spaces.
			    (when at-close
			      (or (string-match "\\s \\s +\\'" comment-prefix)
				  (setq comment-prefix
					(concat comment-prefix " ")))))
			  (setq tmp-pre (point-marker))

			  ;; We insert an extra non-whitespace character
			  ;; before the line break and after comment-prefix in
			  ;; case it's "" or ends with whitespace.
			  (insert-and-inherit "x\n" comment-prefix "x")
			  (setq tmp-post (point-marker))

			  (indent-according-to-mode)

			  (goto-char (1- tmp-post))
			  (cons (buffer-substring-no-properties
				 (c-point 'bol) (point))
				(current-column)))

		      (when tmp-post
			(delete-region tmp-pre tmp-post)
			(set-marker tmp-pre nil)
			(set-marker tmp-post nil))))))))))

    (or res				; Found a good prefix above.

	(save-excursion
	  ;; prefix-line is the bol of a line on which we should try
	  ;; to find the prefix.
	  (let* (fb-string fb-endpos	; Contains any fallback prefix found.
		 (test-line
		  (lambda ()
		    (when (and (looking-at prefix-regexp)
			       (<= (match-end 0) comment-text-end))
		      (unless (eq (match-end 0) (c-point 'eol))
			;; The match is fine if there's text after it.
			(throw 'found (cons (buffer-substring-no-properties
					     (match-beginning 0) (match-end 0))
					    (progn (goto-char (match-end 0))
						   (current-column)))))
		      (unless fb-string
			;; This match is better than nothing, so let's
			;; remember it in case nothing better is found
			;; on another line.
			(setq fb-string (buffer-substring-no-properties
					 (match-beginning 0) (match-end 0))
			      fb-endpos (match-end 0)))
		      t))))

	    (or (catch 'found
		  ;; Search for a line which has text after the prefix
		  ;; so that we get the proper amount of whitespace
		  ;; after it.  We start with the current line, then
		  ;; search backwards, then forwards.

		  (goto-char prefix-line)
		  (when (and (funcall test-line)
			     (or (/= (match-end 1) (match-end 0))
				 ;; The whitespace is sucked up by the
				 ;; first [ \t]* glob if the prefix is empty.
				 (and (= (match-beginning 1) (match-end 1))
				      (/= (match-beginning 0) (match-end 0)))))
		    ;; If the current line doesn't have text but do
		    ;; have whitespace after the prefix, we'll use it.
		    (throw 'found (cons fb-string
					(progn (goto-char fb-endpos)
					       (current-column)))))

		  (if (eq lit-type 'c++)
		      ;; For line comments we can search up to and
		      ;; including the first line.
		      (while (and (zerop (forward-line -1))
				  (>= (point) (car lit-limits)))
			(funcall test-line))
		    ;; For block comments we must stop before the
		    ;; block starter.
		    (while (and (zerop (forward-line -1))
				(> (point) (car lit-limits)))
		      (funcall test-line)))

		  (goto-char prefix-line)
		  (while (and (zerop (forward-line 1))
			      (< (point) (cdr lit-limits)))
		    (funcall test-line))

		  (goto-char prefix-line)
		  nil)

		(when fb-string
		  ;; A good line wasn't found, but at least we have a
		  ;; fallback that matches the comment prefix regexp.
		  (cond ((or (string-match "\\s \\'" fb-string)
			     (progn
			       (goto-char fb-endpos)
			       (not (eolp))))
			 ;; There are ws or text after the prefix, so
			 ;; let's use it.
			 (cons fb-string (current-column)))

			((progn
			   ;; Check if there's any whitespace padding
			   ;; on the comment start line that we can
			   ;; use after the prefix.
			   (goto-char (car lit-limits))
			   (if (looking-at comment-start-regexp)
			       (goto-char (match-end 0))
			     (forward-char 2)
			     (skip-chars-forward " \t"))
			   (or (not (eolp))
			       (eq (char-syntax (char-before)) ?\ )))

			 (setq fb-string (buffer-substring-no-properties
					  (save-excursion
					    (skip-chars-backward " \t")
					    (point))
					  (point)))
			 (goto-char fb-endpos)
			 (skip-chars-backward " \t")

			 (let ((tmp (point)))
			   ;; Got to mess in the buffer once again to
			   ;; ensure the column gets correct.  :P
			   (unwind-protect
			       (progn
				 (insert-and-inherit fb-string)
				 (cons (buffer-substring-no-properties
					(c-point 'bol)
					(point))
				       (current-column)))
			     (delete-region tmp (point)))))

			(t
			 ;; Last resort: Just add a single space after
			 ;; the prefix.
			 (cons (concat fb-string " ")
			       (progn (goto-char fb-endpos)
				      (1+ (current-column)))))))

		;; The line doesn't match the comment prefix regexp.
		(if comment-prefix
		    ;; We have a fallback for line comments that we must use.
		    (cons (concat (buffer-substring-no-properties
				   prefix-line (c-point 'boi))
				  comment-prefix)
			  (progn (back-to-indentation)
				 (+ (current-column) (length comment-prefix))))

		  ;; Assume we are dealing with a "free text" block
		  ;; comment where the lines doesn't have any comment
		  ;; prefix at all and we should just fill it as
		  ;; normal text.
		  '("" . 0))))))
    ))

(defun c-mask-paragraph (fill-paragraph apply-outside-literal fun &rest args)
  ;; Calls FUN with ARGS ar arguments while the current paragraph is
  ;; masked to allow adaptive filling to work correctly.  That
  ;; includes narrowing the buffer and, if point is inside a comment,
  ;; masking the comment starter and ender appropriately.
  ;;
  ;; FILL-PARAGRAPH is non-nil if called for whole paragraph filling.
  ;; The position of point is then less significant when doing masking
  ;; and narrowing.
  ;;
  ;; If APPLY-OUTSIDE-LITERAL is nil then the function will be called
  ;; only if the point turns out to be inside a comment or a string.
  ;;
  ;; Note that this function does not do any hidden buffer changes.

  (let (fill
	;; beg and end limit the region to narrow.  end is a marker.
	beg end
	;; tmp-pre and tmp-post mark strings that are temporarily
	;; inserted at the start and end of the region.  tmp-pre is a
	;; cons of the positions of the prepended string.  tmp-post is
	;; a marker pointing to the single character of the appended
	;; string.
	tmp-pre tmp-post
	;; If hang-ender-stuck isn't nil, the comment ender is
	;; hanging.  In that case it's set to the number of spaces
	;; that should be between the text and the ender.
	hang-ender-stuck
	;; auto-fill-spaces is the exact sequence of whitespace between a
	;; comment's last word and the comment ender, temporarily replaced
	;; with 'x's before calling FUN when FILL-PARAGRAPH is nil.
	auto-fill-spaces
	(here (point))
	(c-lit-limits c-lit-limits)
	(c-lit-type c-lit-type))

    ;; Restore point on undo.  It's necessary since we do a lot of
    ;; hidden inserts and deletes below that should be as transparent
    ;; as possible.
      (if (and buffer-undo-list (not (eq buffer-undo-list t)))
	(setq buffer-undo-list (cons (point) buffer-undo-list)))

    ;; Determine the limits and type of the containing literal (if any):
    ;; C-LIT-LIMITS, C-LIT-TYPE;  and the limits of the current paragraph:
    ;; BEG and END.
    (c-save-buffer-state ()
      (save-restriction
	;; Widen to catch comment limits correctly.
	(widen)
	(unless c-lit-limits
	  (setq c-lit-limits (c-literal-limits nil fill-paragraph)))
	(setq c-lit-limits (c-collect-line-comments c-lit-limits))
	(unless c-lit-type
	  (setq c-lit-type (c-literal-type c-lit-limits))))

      (save-excursion
	(unless (c-safe (backward-char)
			(forward-paragraph)
			(>= (point) here))
	  (goto-char here)
	  (forward-paragraph))
	(setq end (point-marker)))
      (save-excursion
	(unless (c-safe (forward-char)
			(backward-paragraph)
			(<= (point) here))
	  (goto-char here)
	  (backward-paragraph))
	(setq beg (point))))

    (unwind-protect
	(progn
	  ;; For each of the possible types of text (string, C comment ...)
	  ;; determine BEG and END, the region we will narrow to.  If we're in
	  ;; a literal, constrain BEG and END to the limits of this literal.
	  ;;
	  ;; For some of these text types, particularly a block comment, we
	  ;; may need to massage whitespace near literal delimiters, so that
	  ;; these don't get filled inappropriately.
	  (cond

	   ((eq c-lit-type 'c++)	; Line comment.
	    (save-excursion
	      ;; Limit to the comment or paragraph end, whichever
	      ;; comes first.
	      (set-marker end (min end (cdr c-lit-limits)))

	      (when (<= beg (car c-lit-limits))
		;; The region includes the comment starter, so we must
		;; check it.
		(goto-char (car c-lit-limits))
		(back-to-indentation)
		(if (eq (point) (car c-lit-limits))
		    ;; Include the first line in the region.
		    (setq beg (c-point 'bol))
		  ;; The first line contains code before the
		  ;; comment.  We must fake a line that doesn't.
		  (setq tmp-pre t))))

	    (setq apply-outside-literal t))

	   ((eq c-lit-type 'c)		; Block comment.
	    (when
		(or (> end (cdr c-lit-limits))
		    (and (= end (cdr c-lit-limits))
			 (eq (char-before end) ?/)
			 (eq (char-before (1- end)) ?*)
			 ;; disallow "/*/"
			 (> (- (cdr c-lit-limits) (car c-lit-limits)) 3)))
	      ;; There is a comment ender, and the region includes it.  If
	      ;; it's on its own line, it stays on its own line.  If it's got
	      ;; company on the line, it keeps (at least one word of) it.
	      ;; "=====*/" counts as a comment ender here, but "===== */"
	      ;; doesn't and "foo*/" doesn't.
	      (unless
		  (save-excursion
		    (goto-char (cdr c-lit-limits))
		    (beginning-of-line)
		    ;; The following conjunct was added to avoid an
		    ;; "Invalid search bound (wrong side of point)"
		    ;; error in the subsequent re-search.  Maybe
		    ;; another fix would be needed (2007-12-08).
;		    (or (<= (- (cdr c-lit-limits) 2) (point))
; 2010-10-17  Construct removed.
;		    (or (< (- (cdr c-lit-limits) 2) (point))
		    (and
		     (search-forward-regexp
		      (concat "\\=[ \t]*\\(" c-current-comment-prefix "\\)")
		      (- (cdr c-lit-limits) 2) t)
		     (not (search-forward-regexp
			   "\\(\\s \\|\\sw\\)"
			   (- (cdr c-lit-limits) 2) 'limit))
		     ;; The comment ender IS on its own line.  Exclude this
		     ;; line from the filling.
		     (set-marker end (c-point 'bol))));)

		;; The comment ender is hanging.  Replace all space between it
		;; and the last word either by one or two 'x's (when
		;; FILL-PARAGRAPH is non-nil), or a row of x's the same width
		;; as the whitespace (when auto filling), and include it in
		;; the region.  We'll change them back to whitespace
		;; afterwards.  The effect of this is to glue the comment
		;; ender to the last word in the comment during filling.
		(let* ((ender-start (save-excursion
				      (goto-char (cdr c-lit-limits))
				      (skip-syntax-backward "^w ")
				      (point)))
		       (ender-column (save-excursion
				       (goto-char ender-start)
				       (current-column)))
		       (point-rel (- ender-start here))
		       (sentence-ends-comment
			(save-excursion
			  (goto-char ender-start)
			  (and (search-backward-regexp
				(c-sentence-end) (c-point 'bol) t)
			       (goto-char (match-end 0))
			  (looking-at "[ \t]*")
			  (= (match-end 0) ender-start))))
		       spaces)

		  (save-excursion
		    ;; Insert a CR after the "*/", adjust END
		    (goto-char (cdr c-lit-limits))
		    (setq tmp-post (point-marker))
		    (insert ?\n)
		    (set-marker end (point))

		    (forward-line -1)	; last line of the comment
		    (if (and (looking-at (concat "[ \t]*\\(\\("
						 c-current-comment-prefix
						 "\\)[ \t]*\\)"))
			     (eq ender-start (match-end 0)))
			;; The comment ender is prefixed by nothing but a
			;; comment line prefix.  IS THIS POSSIBLE?  (ACM,
			;; 2006/4/28).  Remove it along with surrounding ws.
			(setq spaces (- (match-end 1) (match-end 2)))
		      (goto-char ender-start))
		    (skip-chars-backward " \t\r\n") ; Surely this can be
					; " \t"? "*/" is NOT alone on the line (ACM, 2005/8/18)

		    ;; What's being tested here?  2006/4/20.  FIXME!!!
		    (if (/= (point) ender-start)
			(progn
			  (if (<= here (point))
			      ;; Don't adjust point below if it's
			      ;; before the string we replace.
			      (setq point-rel -1))
			  ;; Keep one or two spaces between the
			  ;; text and the ender, depending on how
			  ;; many there are now.
			  (unless spaces
			    (setq spaces (- ender-column (current-column))))
			  (setq auto-fill-spaces (c-delete-and-extract-region
						  (point) ender-start))
			  ;; paragraph filling condenses multiple spaces to
			  ;; single or double spaces.  auto-fill doesn't.
			  (if fill-paragraph
			      (setq spaces
				    (max
				     (min spaces
					  (if (and sentence-ends-comment
						   sentence-end-double-space)
					      2 1))
				     1)))
			  ;; Insert the filler first to keep marks right.
			  (insert-char ?x spaces t)
			  (setq hang-ender-stuck spaces)
			  (setq point-rel
				(and (>= point-rel 0)
				     (- (point) (min point-rel spaces)))))
		      (setq point-rel nil)))

		  (if point-rel
		      ;; Point was in the middle of the string we
		      ;; replaced above, so put it back in the same
		      ;; relative position, counting from the end.
		      (goto-char point-rel)))
		))

	    (when (<= beg (car c-lit-limits))
	      ;; The region includes the comment starter.
	      (save-excursion
		(goto-char (car c-lit-limits))
		(if (looking-at (concat "\\(" comment-start-skip "\\)$"))
		    ;; Begin with the next line.
		    (setq beg (c-point 'bonl))
		  ;; Fake the fill prefix in the first line.
		  (setq tmp-pre t))))

	    (setq apply-outside-literal t))

	   ((eq c-lit-type 'string)	; String.
	    (save-excursion
	      (when (>= end (cdr c-lit-limits))
		(goto-char (1- (cdr c-lit-limits)))
		(setq tmp-post (point-marker))
		(insert ?\n)
		(set-marker end (point)))
	      (when (<= beg (car c-lit-limits))
		(goto-char (1+ (car c-lit-limits)))
		(setq beg (if (looking-at "\\\\$")
			      ;; Leave the start line if it's
			      ;; nothing but an escaped newline.
			      (1+ (match-end 0))
			    (point)))))
	    (setq apply-outside-literal t))

	   ((eq c-lit-type 'pound)	; Macro
	    ;; Narrow to the macro limits if they are nearer than the
	    ;; paragraph limits.  Don't know if this is necessary but
	    ;; do it for completeness sake (doing auto filling at all
	    ;; inside macros is bogus to begin with since the line
	    ;; continuation backslashes aren't handled).
	    (save-excursion
	      (c-save-buffer-state ()
		(c-beginning-of-macro)
		(beginning-of-line)
		(if (> (point) beg)
		    (setq beg (point)))
		(c-end-of-macro)
		(forward-line)
		(if (< (point) end)
		    (set-marker end (point))))))

	   (t				; Other code.
	    ;; Try to avoid comments and macros in the paragraph to
	    ;; avoid that the adaptive fill mode gets the prefix from
	    ;; them.
	    (c-save-buffer-state nil
	      (save-excursion
		(goto-char beg)
		(c-forward-syntactic-ws end)
		(beginning-of-line)
		(setq beg (point))
		(goto-char end)
		(c-backward-syntactic-ws beg)
		(forward-line)
		(set-marker end (point))))))

	  (when tmp-pre
	    ;; Temporarily insert the fill prefix after the comment
	    ;; starter so that the first line looks like any other
	    ;; comment line in the narrowed region.
	    (setq fill (c-save-buffer-state nil
			 (c-guess-fill-prefix c-lit-limits c-lit-type)))
	    (unless (string-match (concat "\\`[ \t]*\\("
					  c-current-comment-prefix
					  "\\)[ \t]*\\'")
				  (car fill))
	      ;; Oops, the prefix doesn't match the comment prefix
	      ;; regexp.  This could produce very confusing
	      ;; results with adaptive fill packages together with
	      ;; the insert prefix magic below, since the prefix
	      ;; often doesn't appear at all.  So let's warn about
	      ;; it.
	      (message "\
Warning: Regexp from `c-comment-prefix-regexp' doesn't match the comment prefix %S"
		       (car fill)))
	    ;; Find the right spot on the line, break it, insert
	    ;; the fill prefix and make sure we're back in the
	    ;; same column by temporarily prefixing the first word
	    ;; with a number of 'x'.
	    (save-excursion
	      (goto-char (car c-lit-limits))
	      (if (looking-at (if (eq c-lit-type 'c++)
				  c-current-comment-prefix
				comment-start-skip))
		  (goto-char (match-end 0))
		(forward-char 2)
		(skip-chars-forward " \t"))
	      (while (and (< (current-column) (cdr fill))
			  (not (eolp)))
		(forward-char 1))
	      (let ((col (current-column)))
		(setq beg (1+ (point))
		      tmp-pre (list (point)))
		(unwind-protect
		    (progn
		      (insert-and-inherit "\n" (car fill))
		      (insert-char ?x (- col (current-column)) t))
		  (setcdr tmp-pre (point))))))

	  (when apply-outside-literal
	    ;; `apply-outside-literal' is always set to t here if
	    ;; we're inside a literal.

	    (let ((fill-prefix
		   (or fill-prefix
		       ;; Kludge: If the function that adapts the fill prefix
		       ;; doesn't produce the required comment starter for
		       ;; line comments, then force it by setting fill-prefix.
		       (when (and (eq c-lit-type 'c++)
				  ;; Kludge the kludge: filladapt-mode doesn't
				  ;; have this problem, but it currently
				  ;; doesn't override fill-context-prefix
				  ;; (version 2.12).
				  (not (and (boundp 'filladapt-mode)
					    filladapt-mode))
				  (not (string-match
					"\\`[ \t]*//"
					(or (fill-context-prefix beg end)
					    ""))))
			 (c-save-buffer-state nil
			   (car (or fill (c-guess-fill-prefix
					  c-lit-limits c-lit-type)))))))

		  ;; Save the relative position of point if it's outside the
		  ;; region we're going to narrow.  Want to restore it in that
		  ;; case, but otherwise it should be moved according to the
		  ;; called function.
		  (point-rel (cond ((< (point) beg) (- (point) beg))
				   ((> (point) end) (- (point) end)))))

	      ;; Preparations finally done!  Now we can call the
	      ;; actual function.
	      (prog1
		  (save-restriction
		    (narrow-to-region beg end)
		    (apply fun args))
		(if point-rel
		    ;; Restore point if it was outside the region.
		    (if (< point-rel 0)
			(goto-char (+ beg point-rel))
		      (goto-char (+ end point-rel))))))))

      (when (consp tmp-pre)
	(delete-region (car tmp-pre) (cdr tmp-pre)))

      (when tmp-post
	(save-excursion
	  (goto-char tmp-post)
	  (delete-char 1))
	(when hang-ender-stuck
	  ;; Preserve point even if it's in the middle of the string
	  ;; we replace; save-excursion doesn't work in that case.
	  (setq here (point))
	  (goto-char tmp-post)
	  (skip-syntax-backward "^w ")
	  (forward-char (- hang-ender-stuck))
	  (if (or fill-paragraph (not auto-fill-spaces))
	      (insert-char ?\  hang-ender-stuck t)
	    (insert auto-fill-spaces))
	  (delete-char hang-ender-stuck)
	  (goto-char here))
	(set-marker tmp-post nil))

      (set-marker end nil))))

(defun c-fill-paragraph (&optional arg)
  "Like \\[fill-paragraph] but handles C and C++ style comments.
If any of the current line is a comment or within a comment, fill the
comment or the paragraph of it that point is in, preserving the
comment indentation or line-starting decorations (see the
`c-comment-prefix-regexp' and `c-block-comment-prefix' variables for
details).

If point is inside multiline string literal, fill it.  This currently
does not respect escaped newlines, except for the special case when it
is the very first thing in the string.  The intended use for this rule
is in situations like the following:

char description[] = \"\\
A very long description of something that you want to fill to make
nicely formatted output.\";

If point is in any other situation, i.e. in normal code, do nothing.

Optional prefix ARG means justify paragraph as well."
  (interactive "*P")
  (let ((fill-paragraph-function
	 ;; Avoid infinite recursion.
	 (if (not (eq fill-paragraph-function 'c-fill-paragraph))
	     fill-paragraph-function)))
    (c-mask-paragraph t nil 'fill-paragraph arg))
  ;; Always return t.  This has the effect that if filling isn't done
  ;; above, it isn't done at all, and it's therefore effectively
  ;; disabled in normal code.
  t)

(defun c-do-auto-fill ()
  ;; Do automatic filling if not inside a context where it should be
  ;; ignored.
  (let ((c-auto-fill-prefix
	 ;; The decision whether the line should be broken is actually
	 ;; done in c-indent-new-comment-line, which do-auto-fill
	 ;; calls to break lines.  We just set this special variable
	 ;; so that we'll know when we're called from there.  It's
	 ;; also used to detect whether fill-prefix is user set or
	 ;; generated automatically by do-auto-fill.
	 fill-prefix))
    (c-mask-paragraph nil t 'do-auto-fill)))

(defun c-indent-new-comment-line (&optional soft allow-auto-fill)
  "Break line at point and indent, continuing comment or macro if within one.
If inside a comment and `comment-multi-line' is non-nil, the
indentation and line prefix are preserved (see the
`c-comment-prefix-regexp' and `c-block-comment-prefix' variables for
details).  If inside a single line comment and `comment-multi-line' is
nil, a new comment of the same type is started on the next line and
indented as appropriate for comments.  If inside a macro, a line
continuation backslash is inserted and aligned as appropriate, and the
new line is indented according to `c-syntactic-indentation'.

If a fill prefix is specified, it overrides all the above."
  ;; allow-auto-fill is used from c-context-line-break to allow auto
  ;; filling to break the line more than once.  Since this function is
  ;; used from auto-fill itself, that's normally disabled to avoid
  ;; unnecessary recursion.
  (interactive)
  (let ((fill-prefix fill-prefix)
	(do-line-break
	 (lambda ()
	   (delete-horizontal-space)
	   (if soft
	       (insert-and-inherit ?\n)
	     (newline (if allow-auto-fill nil 1)))))
	;; Already know the literal type and limits when called from
	;; c-context-line-break.
	(c-lit-limits c-lit-limits)
	(c-lit-type c-lit-type)
	(c-macro-start c-macro-start))

    (c-save-buffer-state ()
      (when (not (eq c-auto-fill-prefix t))
	;; Called from do-auto-fill.
	(unless c-lit-limits
	  (setq c-lit-limits (c-literal-limits nil nil t)))
	(unless c-lit-type
	  (setq c-lit-type (c-literal-type c-lit-limits)))
	(if (memq (cond ((c-query-and-set-macro-start) 'cpp)
			((null c-lit-type) 'code)
			(t c-lit-type))
		  c-ignore-auto-fill)
	    (setq fill-prefix t)	; Used as flag in the cond.
	  (if (and (null c-auto-fill-prefix)
		   (eq c-lit-type 'c)
		   (<= (c-point 'bol) (car c-lit-limits)))
	      ;; The adaptive fill function has generated a prefix, but
	      ;; we're on the first line in a block comment so it'll be
	      ;; wrong.  Ignore it to guess a better one below.
	      (setq fill-prefix nil)
	    (when (and (eq c-lit-type 'c++)
		       (not (string-match (concat "\\`[ \t]*"
						  c-line-comment-starter)
					  (or fill-prefix ""))))
	      ;; Kludge: If the function that adapted the fill prefix
	      ;; doesn't produce the required comment starter for line
	      ;; comments, then we ignore it.
	      (setq fill-prefix nil)))
	  )))

    (cond ((eq fill-prefix t)
	   ;; A call from do-auto-fill which should be ignored.
	   )
	  (fill-prefix
	   ;; A fill-prefix overrides anything.
	   (funcall do-line-break)
	   (insert-and-inherit fill-prefix))
	  ((c-save-buffer-state ()
	     (unless c-lit-limits
	       (setq c-lit-limits (c-literal-limits)))
	     (unless c-lit-type
	       (setq c-lit-type (c-literal-type c-lit-limits)))
	     (memq c-lit-type '(c c++)))
	   ;; Some sort of comment.
	   (if (or comment-multi-line
		   (save-excursion
		     (goto-char (car c-lit-limits))
		     (end-of-line)
		     (< (point) (cdr c-lit-limits))))
	       ;; Inside a comment that should be continued.
	       (let ((fill (c-save-buffer-state nil
			     (c-guess-fill-prefix
			      (setq c-lit-limits
				    (c-collect-line-comments c-lit-limits))
			      c-lit-type)))
		     (pos (point))
		     (comment-text-end
		      (or (and (eq c-lit-type 'c)
			       (save-excursion
				 (goto-char (- (cdr c-lit-limits) 2))
				 (if (looking-at "\\*/") (point))))
			  (cdr c-lit-limits))))
		 ;; Skip forward past the fill prefix in case
		 ;; we're standing in it.
		 ;;
		 ;; FIXME: This doesn't work well in cases like
		 ;;
		 ;; /* Bla bla bla bla bla
		 ;;         bla bla
		 ;;
		 ;; If point is on the 'B' then the line will be
		 ;; broken after "Bla b".
		 ;;
		 ;; If we have an empty comment, /*   */, the next
		 ;; lot of code pushes point to the */.  We fix
		 ;; this by never allowing point to end up to the
		 ;; right of where it started.
		 (while (and (< (current-column) (cdr fill))
			     (not (eolp)))
		   (forward-char 1))
		 (if (and (> (point) comment-text-end)
			  (> (c-point 'bol) (car c-lit-limits)))
		     (progn
		       ;; The skip takes us out of the (block)
		       ;; comment; insert the fill prefix at bol
		       ;; instead and keep the position.
		       (setq pos (copy-marker pos t))
		       (beginning-of-line)
		       (insert-and-inherit (car fill))
		       (if soft (insert-and-inherit ?\n) (newline 1))
		       (goto-char pos)
		       (set-marker pos nil))
		   ;; Don't break in the middle of a comment starter
		   ;; or ender.
		   (cond ((> (point) comment-text-end)
			  (goto-char comment-text-end))
			 ((< (point) (+ (car c-lit-limits) 2))
			  (goto-char (+ (car c-lit-limits) 2))))
		   (funcall do-line-break)
		   (insert-and-inherit (car fill))
		   (if (and (looking-at c-block-comment-ender-regexp)
			    (memq (char-before) '(?\  ?\t)))
		       (backward-char)))) ; can this hit the
					  ; middle of a TAB?
	     ;; Inside a comment that should be broken.
	     (let ((comment-start comment-start)
		   (comment-end comment-end)
		   col)
	       (if (eq c-lit-type 'c)
		   (unless (string-match "[ \t]*/\\*" comment-start)
		     (setq comment-start "/* " comment-end " */"))
		 (unless (string-match "[ \t]*//" comment-start)
		   (setq comment-start "// " comment-end "")))
	       (setq col (save-excursion
			   (back-to-indentation)
			   (current-column)))
	       (funcall do-line-break)
	       (when (and comment-end (not (equal comment-end "")))
		 (forward-char -1)
		 (insert-and-inherit comment-end)
		 (forward-char 1))
	       ;; c-comment-indent may look at the current
	       ;; indentation, so let's start out with the same
	       ;; indentation as the previous one.
	       (indent-to col)
	       (insert-and-inherit comment-start)
	       (indent-for-comment))))
	  ((c-query-and-set-macro-start)
	   ;; In a macro.
	   (unless (looking-at "[ \t]*\\\\$")
	     ;; Do not clobber the alignment of the line continuation
	     ;; slash; c-backslash-region might look at it.
	     (delete-horizontal-space))
	   ;; Got an asymmetry here: In normal code this command
	   ;; doesn't indent the next line syntactically, and otoh a
	   ;; normal syntactically indenting newline doesn't continue
	   ;; the macro.
	   (c-newline-and-indent (if allow-auto-fill nil 1)))
	  (t
	   ;; Somewhere else in the code.
	   (let ((col (save-excursion
			(beginning-of-line)
			(while (and (looking-at "[ \t]*\\\\?$")
				    (= (forward-line -1) 0)))
			(current-indentation))))
	     (funcall do-line-break)
	     (indent-to col))))))

(defalias 'c-comment-line-break-function 'c-indent-new-comment-line)
(make-obsolete 'c-comment-line-break-function 'c-indent-new-comment-line "21.1")

;; Advice for Emacsen older than 21.1 (!), released 2001/10
(unless (boundp 'comment-line-break-function)
  (defvar c-inside-line-break-advice nil)
  (defadvice indent-new-comment-line (around c-line-break-advice
					     activate preactivate)
    "Call `c-indent-new-comment-line' if in CC Mode."
    (if (or c-inside-line-break-advice
	    (not c-buffer-is-cc-mode))
	ad-do-it
      (let ((c-inside-line-break-advice t))
	(c-indent-new-comment-line (ad-get-arg 0))))))

(defun c-context-line-break ()
  "Do a line break suitable to the context.

When point is outside a comment or macro, insert a newline and indent
according to the syntactic context, unless `c-syntactic-indentation'
is nil, in which case the new line is indented as the previous
non-empty line instead.

When point is inside the content of a preprocessor directive, a line
continuation backslash is inserted before the line break and aligned
appropriately.  The end of the cpp directive doesn't count as inside
it.

When point is inside a comment, continue it with the appropriate
comment prefix (see the `c-comment-prefix-regexp' and
`c-block-comment-prefix' variables for details).  The end of a
C++-style line comment doesn't count as inside it.

When point is inside a string, only insert a backslash when it is also
inside a preprocessor directive."

  (interactive "*")
  (let* (c-lit-limits c-lit-type
	 (c-macro-start c-macro-start)
	 case-fold-search)

    (c-save-buffer-state ()
      (setq c-lit-limits (c-literal-limits nil nil t)
	    c-lit-type (c-literal-type c-lit-limits))
      (when (eq c-lit-type 'c++)
	(setq c-lit-limits (c-collect-line-comments c-lit-limits)))
      (c-query-and-set-macro-start))

    (cond
     ((or (eq c-lit-type 'c)
	  (and (eq c-lit-type 'c++) ; C++ comment, but not at the very end of it.
	       (< (save-excursion
		    (skip-chars-forward " \t")
		    (point))
		  (1- (cdr c-lit-limits))))
	  (and (numberp c-macro-start)	; Macro, but not at the very end of
					; it, not in a string, and not in the
					; cpp keyword.
	       (not (eq c-lit-type 'string))
	       (or (not (looking-at "\\s *$"))
		   (eq (char-before) ?\\))
	       (<= (save-excursion
		     (goto-char c-macro-start)
		     (if (looking-at c-opt-cpp-start)
			 (goto-char (match-end 0)))
		     (point))
		   (point))))
      (let ((comment-multi-line t)
	    (fill-prefix nil))
	(c-indent-new-comment-line nil t)))

     ((eq c-lit-type 'string)
      (if (and (numberp c-macro-start)
	       (not (eq (char-before) ?\\)))
	  (insert ?\\))
      (newline))

     (t (delete-horizontal-space)
	(newline)
      ;; c-indent-line may look at the current indentation, so let's
      ;; start out with the same indentation as the previous line.
	(let ((col (save-excursion
		     (backward-char)
		     (forward-line 0)
		     (while (and (looking-at "[ \t]*\\\\?$")
				 (= (forward-line -1) 0)))
		     (current-indentation))))
	  (indent-to col))
     (indent-according-to-mode)))))

(defun c-context-open-line ()
  "Insert a line break suitable to the context and leave point before it.
This is the `c-context-line-break' equivalent to `open-line', which is
normally bound to C-o.  See `c-context-line-break' for the details."
  (interactive "*")
  (let ((here (point)))
    (unwind-protect
	(progn
	  ;; Temporarily insert a non-whitespace char to keep any
	  ;; preceding whitespace intact.
	  (insert ?x)
	  (c-context-line-break))
      (goto-char here)
      (delete-char 1))))

\f
(cc-provide 'cc-cmds)

;; Local Variables:
;; indent-tabs-mode: t
;; tab-width: 8
;; End:
;;; cc-cmds.el ends here

debug log:

solving 1b557c41a5 ...
found 1b557c41a5 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 external index

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

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.