emacs / lisp / font-lock.el

   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
;;; font-lock.el --- Electric font lock mode

;; Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 1999, 2000, 2001, 02, 2003
;;  Free Software Foundation, Inc.

;; Author: jwz, then rms, then sm
;; Maintainer: FSF
;; Keywords: languages, faces

;; 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 2, 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; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; Font Lock mode is a minor mode that causes your comments to be displayed in
;; one face, strings in another, reserved words in another, and so on.
;;
;; Comments will be displayed in `font-lock-comment-face'.
;; Strings will be displayed in `font-lock-string-face'.
;; Regexps are used to display selected patterns in other faces.
;;
;; To make the text you type be fontified, use M-x font-lock-mode RET.
;; When this minor mode is on, the faces of the current line are updated with
;; every insertion or deletion.
;;
;; To turn Font Lock mode on automatically, add this to your ~/.emacs file:
;;
;;  (add-hook 'emacs-lisp-mode-hook 'turn-on-font-lock)
;;
;; Or if you want to turn Font Lock mode on in many modes:
;;
;;  (global-font-lock-mode t)
;;
;; Fontification for a particular mode may be available in a number of levels
;; of decoration.  The higher the level, the more decoration, but the more time
;; it takes to fontify.  See the variable `font-lock-maximum-decoration', and
;; also the variable `font-lock-maximum-size'.  Support modes for Font Lock
;; mode can be used to speed up Font Lock mode.  See `font-lock-support-mode'.

;;; How Font Lock mode fontifies:

;; When Font Lock mode is turned on in a buffer, it (a) fontifies the entire
;; buffer and (b) installs one of its fontification functions on one of the
;; hook variables that are run by Emacs after every buffer change (i.e., an
;; insertion or deletion).  Fontification means the replacement of `face' text
;; properties in a given region; Emacs displays text with these `face' text
;; properties appropriately.
;;
;; Fontification normally involves syntactic (i.e., strings and comments) and
;; regexp (i.e., keywords and everything else) passes.  There are actually
;; three passes; (a) the syntactic keyword pass, (b) the syntactic pass and (c)
;; the keyword pass.  Confused?
;;
;; The syntactic keyword pass places `syntax-table' text properties in the
;; buffer according to the variable `font-lock-syntactic-keywords'.  It is
;; necessary because Emacs' syntax table is not powerful enough to describe all
;; the different syntactic constructs required by the sort of people who decide
;; that a single quote can be syntactic or not depending on the time of day.
;; (What sort of person could decide to overload the meaning of a quote?)
;; Obviously the syntactic keyword pass must occur before the syntactic pass.
;;
;; The syntactic pass places `face' text properties in the buffer according to
;; syntactic context, i.e., according to the buffer's syntax table and buffer
;; text's `syntax-table' text properties.  It involves using a syntax parsing
;; function to determine the context of different parts of a region of text.  A
;; syntax parsing function is necessary because generally strings and/or
;; comments can span lines, and so the context of a given region is not
;; necessarily apparent from the content of that region.  Because the keyword
;; pass only works within a given region, it is not generally appropriate for
;; syntactic fontification.  This is the first fontification pass that makes
;; changes visible to the user; it fontifies strings and comments.
;;
;; The keyword pass places `face' text properties in the buffer according to
;; the variable `font-lock-keywords'.  It involves searching for given regexps
;; (or calling given search functions) within the given region.  This is the
;; second fontification pass that makes changes visible to the user; it
;; fontifies language reserved words, etc.
;;
;; Oh, and the answer is, "Yes, obviously just about everything should be done
;; in a single syntactic pass, but the only syntactic parser available
;; understands only strings and comments."  Perhaps one day someone will write
;; some syntactic parsers for common languages and a son-of-font-lock.el could
;; use them rather then relying so heavily on the keyword (regexp) pass.

;;; How Font Lock mode supports modes or is supported by modes:

;; Modes that support Font Lock mode do so by defining one or more variables
;; whose values specify the fontification.  Font Lock mode knows of these
;; variable names from (a) the buffer local variable `font-lock-defaults', if
;; non-nil, or (b) the global variable `font-lock-defaults-alist', if the major
;; mode has an entry.  (Font Lock mode is set up via (a) where a mode's
;; patterns are distributed with the mode's package library, and (b) where a
;; mode's patterns are distributed with font-lock.el itself.  An example of (a)
;; is Pascal mode, an example of (b) is Lisp mode.  Normally, the mechanism is
;; (a); (b) is used where it is not clear which package library should contain
;; the pattern definitions.)  Font Lock mode chooses which variable to use for
;; fontification based on `font-lock-maximum-decoration'.
;;
;; Font Lock mode fontification behaviour can be modified in a number of ways.
;; See the below comments and the comments distributed throughout this file.

;;; Constructing patterns:

;; See the documentation for the variable `font-lock-keywords'.
;;
;; Efficient regexps for use as MATCHERs for `font-lock-keywords' and
;; `font-lock-syntactic-keywords' can be generated via the function
;; `regexp-opt'.

;;; Adding patterns for modes that already support Font Lock:

;; Though Font Lock highlighting patterns already exist for many modes, it's
;; likely there's something that you want fontified that currently isn't, even
;; at the maximum fontification level.  You can add highlighting patterns via
;; `font-lock-add-keywords'.  For example, say in some C
;; header file you #define the token `and' to expand to `&&', etc., to make
;; your C code almost readable.  In your ~/.emacs there could be:
;;
;;  (font-lock-add-keywords 'c-mode '("\\<\\(and\\|or\\|not\\)\\>"))
;;
;; Some modes provide specific ways to modify patterns based on the values of
;; other variables.  For example, additional C types can be specified via the
;; variable `c-font-lock-extra-types'.

;;; Adding patterns for modes that do not support Font Lock:

;; Not all modes support Font Lock mode.  If you (as a user of the mode) add
;; patterns for a new mode, you must define in your ~/.emacs a variable or
;; variables that specify regexp fontification.  Then, you should indicate to
;; Font Lock mode, via the mode hook setting `font-lock-defaults', exactly what
;; support is required.  For example, say Foo mode should have the following
;; regexps fontified case-sensitively, and comments and strings should not be
;; fontified automagically.  In your ~/.emacs there could be:
;;
;;  (defvar foo-font-lock-keywords
;;    '(("\\<\\(one\\|two\\|three\\)\\>" . font-lock-keyword-face)
;;      ("\\<\\(four\\|five\\|six\\)\\>" . font-lock-type-face))
;;    "Default expressions to highlight in Foo mode.")
;;
;;  (add-hook 'foo-mode-hook
;;   (lambda ()
;;     (make-local-variable 'font-lock-defaults)
;;     (setq font-lock-defaults '(foo-font-lock-keywords t))))

;;; Adding Font Lock support for modes:

;; Of course, it would be better that the mode already supports Font Lock mode.
;; The package author would do something similar to above.  The mode must
;; define at the top-level a variable or variables that specify regexp
;; fontification.  Then, the mode command should indicate to Font Lock mode,
;; via `font-lock-defaults', exactly what support is required.  For example,
;; say Bar mode should have the following regexps fontified case-insensitively,
;; and comments and strings should be fontified automagically.  In bar.el there
;; could be:
;;
;;  (defvar bar-font-lock-keywords
;;    '(("\\<\\(uno\\|due\\|tre\\)\\>" . font-lock-keyword-face)
;;      ("\\<\\(quattro\\|cinque\\|sei\\)\\>" . font-lock-type-face))
;;    "Default expressions to highlight in Bar mode.")
;;
;; and within `bar-mode' there could be:
;;
;;  (make-local-variable 'font-lock-defaults)
;;  (setq font-lock-defaults '(bar-font-lock-keywords nil t))

;; What is fontification for?  You might say, "It's to make my code look nice."
;; I think it should be for adding information in the form of cues.  These cues
;; should provide you with enough information to both (a) distinguish between
;; different items, and (b) identify the item meanings, without having to read
;; the items and think about it.  Therefore, fontification allows you to think
;; less about, say, the structure of code, and more about, say, why the code
;; doesn't work.  Or maybe it allows you to think less and drift off to sleep.
;;
;; So, here are my opinions/advice/guidelines:
;;
;; - Highlight conceptual objects, such as function and variable names, and
;;   different objects types differently, i.e., (a) and (b) above, highlight
;;   function names differently to variable names.
;; - Keep the faces distinct from each other as far as possible.
;;   i.e., (a) above.
;; - Use the same face for the same conceptual object, across all modes.
;;   i.e., (b) above, all modes that have items that can be thought of as, say,
;;   keywords, should be highlighted with the same face, etc.
;; - Make the face attributes fit the concept as far as possible.
;;   i.e., function names might be a bold colour such as blue, comments might
;;   be a bright colour such as red, character strings might be brown, because,
;;   err, strings are brown (that was not the reason, please believe me).
;; - Don't use a non-nil OVERRIDE unless you have a good reason.
;;   Only use OVERRIDE for special things that are easy to define, such as the
;;   way `...' quotes are treated in strings and comments in Emacs Lisp mode.
;;   Don't use it to, say, highlight keywords in commented out code or strings.
;; - Err, that's it.

;;; Code:

(require 'syntax)

;; Define core `font-lock' group.
(defgroup font-lock nil
  "Font Lock mode text highlighting package."
  :link '(custom-manual "(emacs)Font Lock")
  :link '(custom-manual "(elisp)Font Lock Mode")
  :group 'faces)

(defgroup font-lock-highlighting-faces nil
  "Faces for highlighting text."
  :prefix "font-lock-"
  :group 'font-lock)

(defgroup font-lock-extra-types nil
  "Extra mode-specific type names for highlighting declarations."
  :group 'font-lock)

;; Define support mode groups here to impose `font-lock' group order.
(defgroup fast-lock nil
  "Font Lock support mode to cache fontification."
  :link '(custom-manual "(emacs)Support Modes")
  :load 'fast-lock
  :group 'font-lock)

(defgroup lazy-lock nil
  "Font Lock support mode to fontify lazily."
  :link '(custom-manual "(emacs)Support Modes")
  :load 'lazy-lock
  :group 'font-lock)

(defgroup jit-lock nil
  "Font Lock support mode to fontify just-in-time."
  :link '(custom-manual "(emacs)Support Modes")
  :version "21.1"
  :load 'jit-lock
  :group 'font-lock)

;; User variables.

(defcustom font-lock-maximum-size 256000
  "*Maximum size of a buffer for buffer fontification.
Only buffers less than this can be fontified when Font Lock mode is turned on.
If nil, means size is irrelevant.
If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE),
where MAJOR-MODE is a symbol or t (meaning the default).  For example:
 ((c-mode . 256000) (c++-mode . 256000) (rmail-mode . 1048576))
means that the maximum size is 250K for buffers in C or C++ modes, one megabyte
for buffers in Rmail mode, and size is irrelevant otherwise."
  :type '(choice (const :tag "none" nil)
		 (integer :tag "size")
		 (repeat :menu-tag "mode specific" :tag "mode specific"
			 :value ((t . nil))
			 (cons :tag "Instance"
			       (radio :tag "Mode"
				      (const :tag "all" t)
				      (symbol :tag "name"))
			       (radio :tag "Size"
				      (const :tag "none" nil)
				      (integer :tag "size")))))
  :group 'font-lock)

(defcustom font-lock-maximum-decoration t
  "*Maximum decoration level for fontification.
If nil, use the default decoration (typically the minimum available).
If t, use the maximum decoration available.
If a number, use that level of decoration (or if not available the maximum).
If a list, each element should be a cons pair of the form (MAJOR-MODE . LEVEL),
where MAJOR-MODE is a symbol or t (meaning the default).  For example:
 ((c-mode . t) (c++-mode . 2) (t . 1))
means use the maximum decoration available for buffers in C mode, level 2
decoration for buffers in C++ mode, and level 1 decoration otherwise."
  :type '(choice (const :tag "default" nil)
		 (const :tag "maximum" t)
		 (integer :tag "level" 1)
		 (repeat :menu-tag "mode specific" :tag "mode specific"
			 :value ((t . t))
			 (cons :tag "Instance"
			       (radio :tag "Mode"
				      (const :tag "all" t)
				      (symbol :tag "name"))
			       (radio :tag "Decoration"
				      (const :tag "default" nil)
				      (const :tag "maximum" t)
				      (integer :tag "level" 1)))))
  :group 'font-lock)

(defcustom font-lock-verbose 0
  "*If non-nil, means show status messages for buffer fontification.
If a number, only buffers greater than this size have fontification messages."
  :type '(choice (const :tag "never" nil)
		 (other :tag "always" t)
		 (integer :tag "size"))
  :group 'font-lock)


;; Originally these variable values were face names such as `bold' etc.
;; Now we create our own faces, but we keep these variables for compatibility
;; and they give users another mechanism for changing face appearance.
;; We now allow a FACENAME in `font-lock-keywords' to be any expression that
;; returns a face.  So the easiest thing is to continue using these variables,
;; rather than sometimes evaling FACENAME and sometimes not.  sm.
(defvar font-lock-comment-face		'font-lock-comment-face
  "Face name to use for comments.")

(defvar font-lock-string-face		'font-lock-string-face
  "Face name to use for strings.")

(defvar font-lock-doc-face		'font-lock-doc-face
  "Face name to use for documentation.")

(defvar font-lock-keyword-face		'font-lock-keyword-face
  "Face name to use for keywords.")

(defvar font-lock-builtin-face		'font-lock-builtin-face
  "Face name to use for builtins.")

(defvar font-lock-function-name-face	'font-lock-function-name-face
  "Face name to use for function names.")

(defvar font-lock-variable-name-face	'font-lock-variable-name-face
  "Face name to use for variable names.")

(defvar font-lock-type-face		'font-lock-type-face
  "Face name to use for type and class names.")

(defvar font-lock-constant-face		'font-lock-constant-face
  "Face name to use for constant and label names.")

(defvar font-lock-warning-face		'font-lock-warning-face
  "Face name to use for things that should stand out.")

(defvar font-lock-preprocessor-face	'font-lock-preprocessor-face
  "Face name to use for preprocessor directives.")

(defvar font-lock-reference-face	'font-lock-constant-face)
(make-obsolete-variable 'font-lock-reference-face 'font-lock-constant-face)

;; Fontification variables:

(defvar font-lock-keywords nil
  "A list of the keywords to highlight.
Each element should have one of these forms:

 MATCHER
 (MATCHER . MATCH)
 (MATCHER . FACENAME)
 (MATCHER . HIGHLIGHT)
 (MATCHER HIGHLIGHT ...)
 (eval . FORM)

where MATCHER can be either the regexp to search for, or the function name to
call to make the search (called with one argument, the limit of the search) and
return non-nil if it succeeds (and set `match-data' appropriately).
MATCHER regexps can be generated via the function `regexp-opt'.

FORM is an expression, whose value should be a keyword element, evaluated when
the keyword is (first) used in a buffer.  This feature can be used to provide a
keyword that can only be generated when Font Lock mode is actually turned on.

HIGHLIGHT should be either MATCH-HIGHLIGHT or MATCH-ANCHORED.

For highlighting single items, for example each instance of the word \"foo\",
typically only MATCH-HIGHLIGHT is required.
However, if an item or (typically) items are to be highlighted following the
instance of another item (the anchor), for example each instance of the
word \"bar\" following the word \"anchor\" then MATCH-ANCHORED may be required.

MATCH-HIGHLIGHT should be of the form:

 (MATCH FACENAME OVERRIDE LAXMATCH)

MATCH is the subexpression of MATCHER to be highlighted.  FACENAME is an
expression whose value is the face name to use.  Face default attributes
can be modified via \\[customize].  Instead of a face, FACENAME can
evaluate to a property list of the form (face VAL1 PROP2 VAL2 PROP3 VAL3 ...)
in which case all the listed text-properties will be set rather than
just `face'.  In such a case, you will most likely want to put those
properties in `font-lock-extra-managed-props' or to override
`font-lock-unfontify-region-function'.

OVERRIDE and LAXMATCH are flags.  If OVERRIDE is t, existing fontification can
be overwritten.  If `keep', only parts not already fontified are highlighted.
If `prepend' or `append', existing fontification is merged with the new, in
which the new or existing fontification, respectively, takes precedence.
If LAXMATCH is non-nil, no error is signaled if there is no MATCH in MATCHER.

For example, an element of the form highlights (if not already highlighted):

 \"\\\\\\=<foo\\\\\\=>\"		discrete occurrences of \"foo\" in the value of the
			variable `font-lock-keyword-face'.
 (\"fu\\\\(bar\\\\)\" . 1)	substring \"bar\" within all occurrences of \"fubar\" in
			the value of `font-lock-keyword-face'.
 (\"fubar\" . fubar-face)	Occurrences of \"fubar\" in the value of `fubar-face'.
 (\"foo\\\\|bar\" 0 foo-bar-face t)
			occurrences of either \"foo\" or \"bar\" in the value
			of `foo-bar-face', even if already highlighted.
 (fubar-match 1 fubar-face)
			the first subexpression within all occurrences of
			whatever the function `fubar-match' finds and matches
			in the value of `fubar-face'.

MATCH-ANCHORED should be of the form:

 (MATCHER PRE-MATCH-FORM POST-MATCH-FORM MATCH-HIGHLIGHT ...)

where MATCHER is a regexp to search for or the function name to call to make
the search, as for MATCH-HIGHLIGHT above, but with one exception; see below.
PRE-MATCH-FORM and POST-MATCH-FORM are evaluated before the first, and after
the last, instance MATCH-ANCHORED's MATCHER is used.  Therefore they can be
used to initialise before, and cleanup after, MATCHER is used.  Typically,
PRE-MATCH-FORM is used to move to some position relative to the original
MATCHER, before starting with MATCH-ANCHORED's MATCHER.  POST-MATCH-FORM might
be used to move, before resuming with MATCH-ANCHORED's parent's MATCHER.

For example, an element of the form highlights (if not already highlighted):

 (\"\\\\\\=<anchor\\\\\\=>\" (0 anchor-face) (\"\\\\\\=<item\\\\\\=>\" nil nil (0 item-face)))

 discrete occurrences of \"anchor\" in the value of `anchor-face', and subsequent
 discrete occurrences of \"item\" (on the same line) in the value of `item-face'.
 (Here PRE-MATCH-FORM and POST-MATCH-FORM are nil.  Therefore \"item\" is
 initially searched for starting from the end of the match of \"anchor\", and
 searching for subsequent instance of \"anchor\" resumes from where searching
 for \"item\" concluded.)

The above-mentioned exception is as follows.  The limit of the MATCHER search
defaults to the end of the line after PRE-MATCH-FORM is evaluated.
However, if PRE-MATCH-FORM returns a position greater than the position after
PRE-MATCH-FORM is evaluated, that position is used as the limit of the search.
It is generally a bad idea to return a position greater than the end of the
line, i.e., cause the MATCHER search to span lines.

These regular expressions can match text which spans lines, although
it is better to avoid it if possible since updating them while editing
text is slower, and it is not guaranteed to be always correct when using
support modes like jit-lock or lazy-lock.

This variable is set by major modes via the variable `font-lock-defaults'.
Be careful when composing regexps for this list; a poorly written pattern can
dramatically slow things down!")

(defvar font-lock-keywords-alist nil
  "*Alist of `font-lock-keywords' local to a `major-mode'.
This is normally set via `font-lock-add-keywords' and
`font-lock-remove-keywords'.")

(defvar font-lock-removed-keywords-alist nil
  "*Alist of `font-lock-keywords' removed from `major-mode'.
This is normally set via `font-lock-add-keywords' and
`font-lock-remove-keywords'.")

(defvar font-lock-keywords-only nil
  "*Non-nil means Font Lock should not fontify comments or strings.
This is normally set via `font-lock-defaults'.")

(defvar font-lock-keywords-case-fold-search nil
  "*Non-nil means the patterns in `font-lock-keywords' are case-insensitive.
This is normally set via `font-lock-defaults'.")
(make-variable-buffer-local 'font-lock-keywords-case-fold-search)

(defvar font-lock-syntactically-fontified 0
  "Point up to which `font-lock-syntactic-keywords' has been applied.
If nil, this is ignored, in which case the syntactic fontification may
sometimes be slightly incorrect.")
(make-variable-buffer-local 'font-lock-syntactically-fontified)

(defvar font-lock-syntactic-face-function
  (lambda (state)
    (if (nth 3 state) font-lock-string-face font-lock-comment-face))
  "Function to determine which face to use when fontifying syntactically.
The function is called with a single parameter (the state as returned by
`parse-partial-sexp' at the beginning of the region to highlight) and
should return a face.")

(defvar font-lock-syntactic-keywords nil
  "A list of the syntactic keywords to highlight.
Can be the list or the name of a function or variable whose value is the list.
See `font-lock-keywords' for a description of the form of this list;
the differences are listed below.  MATCH-HIGHLIGHT should be of the form:

 (MATCH SYNTAX OVERRIDE LAXMATCH)

where SYNTAX can be a string (as taken by `modify-syntax-entry'), a syntax
table, a cons cell (as returned by `string-to-syntax') or an expression whose
value is such a form.  OVERRIDE cannot be `prepend' or `append'.

For example, an element of the form highlights syntactically:

 (\"\\\\$\\\\(#\\\\)\" 1 \".\")

 a hash character when following a dollar character, with a SYNTAX of
 \".\" (meaning punctuation syntax).  Assuming that the buffer syntax table does
 specify hash characters to have comment start syntax, the element will only
 highlight hash characters that do not follow dollar characters as comments
 syntactically.

 (\"\\\\('\\\\).\\\\('\\\\)\"
  (1 \"\\\"\")
  (2 \"\\\"\"))

 both single quotes which surround a single character, with a SYNTAX of
 \"\\\"\" (meaning string quote syntax).  Assuming that the buffer syntax table
 does not specify single quotes to have quote syntax, the element will only
 highlight single quotes of the form 'c' as strings syntactically.
 Other forms, such as foo'bar or 'fubar', will not be highlighted as strings.

This is normally set via `font-lock-defaults'.")

(defvar font-lock-syntax-table nil
  "Non-nil means use this syntax table for fontifying.
If this is nil, the major mode's syntax table is used.
This is normally set via `font-lock-defaults'.")

(defvar font-lock-beginning-of-syntax-function nil
  "*Non-nil means use this function to move back outside all constructs.
When called with no args it should move point backward to a place which
is not in a string or comment and not within any bracket-pairs (or else,
a place such that any bracket-pairs outside it can be ignored for Emacs
syntax analysis and fontification).

If this is nil, the beginning of the buffer is used, which is
always correct but tends to be slow.
This is normally set via `font-lock-defaults'.
This variable is semi-obsolete; we recommend setting
`syntax-begin-function' instead.")

(defvar font-lock-mark-block-function nil
  "*Non-nil means use this function to mark a block of text.
When called with no args it should leave point at the beginning of any
enclosing textual block and mark at the end.
This is normally set via `font-lock-defaults'.")

(defvar font-lock-fontify-buffer-function 'font-lock-default-fontify-buffer
  "Function to use for fontifying the buffer.
This is normally set via `font-lock-defaults'.")

(defvar font-lock-unfontify-buffer-function 'font-lock-default-unfontify-buffer
  "Function to use for unfontifying the buffer.
This is used when turning off Font Lock mode.
This is normally set via `font-lock-defaults'.")

(defvar font-lock-fontify-region-function 'font-lock-default-fontify-region
  "Function to use for fontifying a region.
It should take two args, the beginning and end of the region, and an optional
third arg VERBOSE.  If non-nil, the function should print status messages.
This is normally set via `font-lock-defaults'.")

(defvar font-lock-unfontify-region-function 'font-lock-default-unfontify-region
  "Function to use for unfontifying a region.
It should take two args, the beginning and end of the region.
This is normally set via `font-lock-defaults'.")

(defvar font-lock-inhibit-thing-lock nil
  "List of Font Lock mode related modes that should not be turned on.
Currently, valid mode names are `fast-lock-mode', `jit-lock-mode' and
`lazy-lock-mode'.  This is normally set via `font-lock-defaults'.")

(defvar font-lock-multiline nil
  "Whether font-lock should cater to multiline keywords.
If nil, don't try to handle multiline patterns.
If t, always handle multiline patterns.
If `undecided', don't try to handle multiline patterns until you see one.
Major/minor modes can set this variable if they know which option applies.")

(defvar font-lock-fontified nil)	; Whether we have fontified the buffer.

;; Font Lock mode.

(eval-when-compile
  ;;
  ;; We don't do this at the top-level as we only use non-autoloaded macros.
  (require 'cl)
  ;;
  ;; Borrowed from lazy-lock.el.
  ;; We use this to preserve or protect things when modifying text properties.
  (defmacro save-buffer-state (varlist &rest body)
    "Bind variables according to VARLIST and eval BODY restoring buffer state."
    (let ((modified (make-symbol "modified")))
      `(let* ,(append varlist
		      `((,modified (buffer-modified-p))
			(buffer-undo-list t)
			(inhibit-read-only t)
			(inhibit-point-motion-hooks t)
			(inhibit-modification-hooks t)
			deactivate-mark
			buffer-file-name
			buffer-file-truename))
	 (progn
	   ,@body)
	 (unless ,modified
	   (restore-buffer-modified-p nil)))))
  (put 'save-buffer-state 'lisp-indent-function 1)
  (def-edebug-spec save-buffer-state let)
  ;;
  ;; Shut up the byte compiler.
  (defvar font-lock-face-attributes))	; Obsolete but respected if set.

;;;###autoload
(defun font-lock-mode-internal (arg)
  ;; Turn on Font Lock mode.
  (when arg
    (add-hook 'after-change-functions 'font-lock-after-change-function t t)
    (font-lock-set-defaults)
    (font-lock-turn-on-thing-lock)
    ;; Fontify the buffer if we have to.
    (let ((max-size (font-lock-value-in-major-mode font-lock-maximum-size)))
      (cond (font-lock-fontified
	     nil)
	    ((or (null max-size) (> max-size (buffer-size)))
	     (font-lock-fontify-buffer))
	    (font-lock-verbose
	     (message "Fontifying %s...buffer size greater than font-lock-maximum-size"
		      (buffer-name))))))
  ;; Turn off Font Lock mode.
  (unless font-lock-mode
    (remove-hook 'after-change-functions 'font-lock-after-change-function t)
    (font-lock-unfontify-buffer)
    (font-lock-turn-off-thing-lock)))

;;;###autoload
(defun font-lock-add-keywords (mode keywords &optional append)
  "Add highlighting KEYWORDS for MODE.
MODE should be a symbol, the major mode command name, such as `c-mode'
or nil.  If nil, highlighting keywords are added for the current buffer.
KEYWORDS should be a list; see the variable `font-lock-keywords'.
By default they are added at the beginning of the current highlighting list.
If optional argument APPEND is `set', they are used to replace the current
highlighting list.  If APPEND is any other non-nil value, they are added at the
end of the current highlighting list.

For example:

 (font-lock-add-keywords 'c-mode
  '((\"\\\\\\=<\\\\(FIXME\\\\):\" 1 font-lock-warning-face prepend)
    (\"\\\\\\=<\\\\(and\\\\|or\\\\|not\\\\)\\\\\\=>\" . font-lock-keyword-face)))

adds two fontification patterns for C mode, to fontify `FIXME:' words, even in
comments, and to fontify `and', `or' and `not' words as keywords.

When used from an elisp package (such as a minor mode), it is recommended
to use nil for MODE (and place the call in a loop or on a hook) to avoid
subtle problems due to details of the implementation.

Note that some modes have specialized support for additional patterns, e.g.,
see the variables `c-font-lock-extra-types', `c++-font-lock-extra-types',
`objc-font-lock-extra-types' and `java-font-lock-extra-types'."
  (cond (mode
	 ;; If MODE is non-nil, add the KEYWORDS and APPEND spec to
	 ;; `font-lock-keywords-alist' so `font-lock-set-defaults' uses them.
	 (let ((spec (cons keywords append)) cell)
	   (if (setq cell (assq mode font-lock-keywords-alist))
	       (if (eq append 'set)
		   (setcdr cell (list spec))
		 (setcdr cell (append (cdr cell) (list spec))))
	     (push (list mode spec) font-lock-keywords-alist)))
	 ;; Make sure that `font-lock-removed-keywords-alist' does not
	 ;; contain the new keywords.
	 (font-lock-update-removed-keyword-alist mode keywords append))
	(t
	 ;; Otherwise set or add the keywords now.
	 (font-lock-set-defaults)
 	 (if (eq append 'set)
 	     (setq font-lock-keywords keywords)
	   (font-lock-remove-keywords nil keywords) ;to avoid duplicates
	   (let ((old (if (eq (car-safe font-lock-keywords) t)
			  (cdr font-lock-keywords)
			font-lock-keywords)))
	     (setq font-lock-keywords (if append
					  (append old keywords)
					(append keywords old))))))))

(defun font-lock-update-removed-keyword-alist (mode keywords append)
  ;; Update `font-lock-removed-keywords-alist' when adding new
  ;; KEYWORDS to MODE.
  ;;
  ;; When font-lock is enabled first all keywords in the list
  ;; `font-lock-keywords-alist' are added, then all keywords in the
  ;; list `font-lock-removed-keywords-alist' are removed.  If a
  ;; keyword was once added, removed, and then added again it must be
  ;; removed from the removed-keywords list.  Otherwise the second add
  ;; will not take effect.
  (let ((cell (assq mode font-lock-removed-keywords-alist)))
    (if cell
	(if (eq append 'set)
	    ;; A new set of keywords is defined.  Forget all about
	    ;; our old keywords that should be removed.
	    (setq font-lock-removed-keywords-alist
		  (delq cell font-lock-removed-keywords-alist))
	  ;; Delete all previously removed keywords.
	  (dolist (kword keywords)
	    (setcdr cell (delete kword (cdr cell))))
	  ;; Delete the mode cell if empty.
	  (if (null (cdr cell))
	      (setq font-lock-removed-keywords-alist
		    (delq cell font-lock-removed-keywords-alist)))))))

;; Written by Anders Lindgren <andersl@andersl.com>.
;;
;; Case study:
;; (I)  The keywords are removed from a major mode.
;;      In this case the keyword could be local (i.e. added earlier by
;;      `font-lock-add-keywords'), global, or both.
;;
;;      (a) In the local case we remove the keywords from the variable
;;          `font-lock-keywords-alist'.
;;
;;      (b) The actual global keywords are not known at this time.
;;          All keywords are added to `font-lock-removed-keywords-alist',
;;          when font-lock is enabled those keywords are removed.
;;
;;      Note that added keywords are taken out of the list of removed
;;      keywords.  This ensure correct operation when the same keyword
;;      is added and removed several times.
;;
;; (II) The keywords are removed from the current buffer.
;;;###autoload
(defun font-lock-remove-keywords (mode keywords)
  "Remove highlighting KEYWORDS for MODE.

MODE should be a symbol, the major mode command name, such as `c-mode'
or nil.  If nil, highlighting keywords are removed for the current buffer.

When used from an elisp package (such as a minor mode), it is recommended
to use nil for MODE (and place the call in a loop or on a hook) to avoid
subtle problems due to details of the implementation."
  (cond (mode
	 ;; Remove one keyword at the time.
	 (dolist (keyword keywords)
	   (let ((top-cell (assq mode font-lock-keywords-alist)))
	     ;; If MODE is non-nil, remove the KEYWORD from
	     ;; `font-lock-keywords-alist'.
	     (when top-cell
	       (dolist (keyword-list-append-pair (cdr top-cell))
		 ;; `keywords-list-append-pair' is a cons with a list of
		 ;; keywords in the car top-cell and the original append
		 ;; argument in the cdr top-cell.
		 (setcar keyword-list-append-pair
			 (delete keyword (car keyword-list-append-pair))))
	       ;; Remove keyword list/append pair when the keyword list
	       ;; is empty and append doesn't specify `set'.  (If it
	       ;; should be deleted then previously deleted keywords
	       ;; would appear again.)
	       (let ((cell top-cell))
		 (while (cdr cell)
		   (if (and (null (car (car (cdr cell))))
			    (not (eq (cdr (car (cdr cell))) 'set)))
		       (setcdr cell (cdr (cdr cell)))
		     (setq cell (cdr cell)))))
	       ;; Final cleanup, remove major mode cell if last keyword
	       ;; was deleted.
	       (if (null (cdr top-cell))
		   (setq font-lock-keywords-alist
			 (delq top-cell font-lock-keywords-alist))))
	     ;; Remember the keyword in case it is not local.
	     (let ((cell (assq mode font-lock-removed-keywords-alist)))
	       (if cell
		   (unless (member keyword (cdr cell))
		     (nconc cell (list keyword)))
		 (push (cons mode (list keyword))
		       font-lock-removed-keywords-alist))))))
	(t
	 ;; Otherwise remove it immediately.
	 (font-lock-set-defaults)
	 (setq font-lock-keywords (copy-sequence font-lock-keywords))
	 (dolist (keyword keywords)
	   (setq font-lock-keywords
		 (delete keyword
			 ;; The keywords might be compiled.
			 (delete (font-lock-compile-keyword keyword)
				 font-lock-keywords)))))))

;;; Font Lock Support mode.

;; This is the code used to interface font-lock.el with any of its add-on
;; packages, and provide the user interface.  Packages that have their own
;; local buffer fontification functions (see below) may have to call
;; `font-lock-after-fontify-buffer' and/or `font-lock-after-unfontify-buffer'
;; themselves.

(defcustom font-lock-support-mode 'jit-lock-mode
  "*Support mode for Font Lock mode.
Support modes speed up Font Lock mode by being choosy about when fontification
occurs.  Known support modes are Fast Lock mode (symbol `fast-lock-mode'),
Lazy Lock mode (symbol `lazy-lock-mode'), and Just-in-time Lock mode (symbol
`jit-lock-mode'.  See those modes for more info.
If nil, means support for Font Lock mode is never performed.
If a symbol, use that support mode.
If a list, each element should be of the form (MAJOR-MODE . SUPPORT-MODE),
where MAJOR-MODE is a symbol or t (meaning the default).  For example:
 ((c-mode . fast-lock-mode) (c++-mode . fast-lock-mode) (t . lazy-lock-mode))
means that Fast Lock mode is used to support Font Lock mode for buffers in C or
C++ modes, and Lazy Lock mode is used to support Font Lock mode otherwise.

The value of this variable is used when Font Lock mode is turned on."
  :type '(choice (const :tag "none" nil)
		 (const :tag "fast lock" fast-lock-mode)
		 (const :tag "lazy lock" lazy-lock-mode)
		 (const :tag "jit lock" jit-lock-mode)
		 (repeat :menu-tag "mode specific" :tag "mode specific"
			 :value ((t . jit-lock-mode))
			 (cons :tag "Instance"
			       (radio :tag "Mode"
				      (const :tag "all" t)
				      (symbol :tag "name"))
			       (radio :tag "Support"
				      (const :tag "none" nil)
				      (const :tag "fast lock" fast-lock-mode)
				      (const :tag "lazy lock" lazy-lock-mode)
				      (const :tag "JIT lock" jit-lock-mode)))
			 ))
  :version "21.1"
  :group 'font-lock)

(defvar fast-lock-mode)
(defvar lazy-lock-mode)
(defvar jit-lock-mode)

(defun font-lock-turn-on-thing-lock ()
  (let ((thing-mode (font-lock-value-in-major-mode font-lock-support-mode)))
    (cond ((eq thing-mode 'fast-lock-mode)
	   (fast-lock-mode t))
	  ((eq thing-mode 'lazy-lock-mode)
	   (lazy-lock-mode t))
	  ((eq thing-mode 'jit-lock-mode)
	   ;; Prepare for jit-lock
	   (remove-hook 'after-change-functions
			'font-lock-after-change-function t)
	   (set (make-local-variable 'font-lock-fontify-buffer-function)
		'jit-lock-refontify)
	   ;; Don't fontify eagerly (and don't abort is the buffer is large).
	   (set (make-local-variable 'font-lock-fontified) t)
	   ;; Use jit-lock.
	   (jit-lock-register 'font-lock-fontify-region
			      (not font-lock-keywords-only))))))

(defun font-lock-turn-off-thing-lock ()
  (cond ((and (boundp 'fast-lock-mode) fast-lock-mode)
	 (fast-lock-mode -1))
	((and (boundp 'jit-lock-mode) jit-lock-mode)
	 (jit-lock-unregister 'font-lock-fontify-region)
	 ;; Reset local vars to the non-jit-lock case.
	 (kill-local-variable 'font-lock-fontify-buffer-function))
	((and (boundp 'lazy-lock-mode) lazy-lock-mode)
	 (lazy-lock-mode -1))))

(defun font-lock-after-fontify-buffer ()
  (cond ((and (boundp 'fast-lock-mode) fast-lock-mode)
	 (fast-lock-after-fontify-buffer))
	;; Useless now that jit-lock intercepts font-lock-fontify-buffer.  -sm
	;; (jit-lock-mode
	;;  (jit-lock-after-fontify-buffer))
	((and (boundp 'lazy-lock-mode) lazy-lock-mode)
	 (lazy-lock-after-fontify-buffer))))

(defun font-lock-after-unfontify-buffer ()
  (cond ((and (boundp 'fast-lock-mode) fast-lock-mode)
	 (fast-lock-after-unfontify-buffer))
	;; Useless as well.  It's only called when:
	;; - turning off font-lock: it does not matter if we leave spurious
	;;   `fontified' text props around since jit-lock-mode is also off.
	;; - font-lock-default-fontify-buffer fails: this is not run
	;;   any more anyway.   -sm
	;;
	;; (jit-lock-mode
	;;  (jit-lock-after-unfontify-buffer))
	((and (boundp 'lazy-lock-mode) lazy-lock-mode)
	 (lazy-lock-after-unfontify-buffer))))

;;; End of Font Lock Support mode.

;;; Fontification functions.

;; Rather than the function, e.g., `font-lock-fontify-region' containing the
;; code to fontify a region, the function runs the function whose name is the
;; value of the variable, e.g., `font-lock-fontify-region-function'.  Normally,
;; the value of this variable is, e.g., `font-lock-default-fontify-region'
;; which does contain the code to fontify a region.  However, the value of the
;; variable could be anything and thus, e.g., `font-lock-fontify-region' could
;; do anything.  The indirection of the fontification functions gives major
;; modes the capability of modifying the way font-lock.el fontifies.  Major
;; modes can modify the values of, e.g., `font-lock-fontify-region-function',
;; via the variable `font-lock-defaults'.
;;
;; For example, Rmail mode sets the variable `font-lock-defaults' so that
;; font-lock.el uses its own function for buffer fontification.  This function
;; makes fontification be on a message-by-message basis and so visiting an
;; RMAIL file is much faster.  A clever implementation of the function might
;; fontify the headers differently than the message body.  (It should, and
;; correspondingly for Mail mode, but I can't be bothered to do the work.  Can
;; you?)  This hints at a more interesting use...
;;
;; Languages that contain text normally contained in different major modes
;; could define their own fontification functions that treat text differently
;; depending on its context.  For example, Perl mode could arrange that here
;; docs are fontified differently than Perl code.  Or Yacc mode could fontify
;; rules one way and C code another.  Neat!
;;
;; A further reason to use the fontification indirection feature is when the
;; default syntactual fontification, or the default fontification in general,
;; is not flexible enough for a particular major mode.  For example, perhaps
;; comments are just too hairy for `font-lock-fontify-syntactically-region' to
;; cope with.  You need to write your own version of that function, e.g.,
;; `hairy-fontify-syntactically-region', and make your own version of
;; `hairy-fontify-region' call that function before calling
;; `font-lock-fontify-keywords-region' for the normal regexp fontification
;; pass.  And Hairy mode would set `font-lock-defaults' so that font-lock.el
;; would call your region fontification function instead of its own.  For
;; example, TeX modes could fontify {\foo ...} and \bar{...}  etc. multi-line
;; directives correctly and cleanly.  (It is the same problem as fontifying
;; multi-line strings and comments; regexps are not appropriate for the job.)

;;;###autoload
(defun font-lock-fontify-buffer ()
  "Fontify the current buffer the way the function `font-lock-mode' would."
  (interactive)
  (let ((font-lock-verbose (or font-lock-verbose (interactive-p))))
    (funcall font-lock-fontify-buffer-function)))

(defun font-lock-unfontify-buffer ()
  (funcall font-lock-unfontify-buffer-function))

(defun font-lock-fontify-region (beg end &optional loudly)
  (funcall font-lock-fontify-region-function beg end loudly))

(defun font-lock-unfontify-region (beg end)
  (funcall font-lock-unfontify-region-function beg end))

(defun font-lock-default-fontify-buffer ()
  (let ((verbose (if (numberp font-lock-verbose)
		     (> (buffer-size) font-lock-verbose)
		   font-lock-verbose)))
    (with-temp-message
	(when verbose
	  (format "Fontifying %s..." (buffer-name)))
      ;; Make sure we have the right `font-lock-keywords' etc.
      (unless font-lock-mode
	(font-lock-set-defaults))
      ;; Make sure we fontify etc. in the whole buffer.
      (save-restriction
	(widen)
	(condition-case nil
	    (save-excursion
	      (save-match-data
		(font-lock-fontify-region (point-min) (point-max) verbose)
		(font-lock-after-fontify-buffer)
		(setq font-lock-fontified t)))
	  ;; We don't restore the old fontification, so it's best to unfontify.
	  (quit (font-lock-unfontify-buffer)))))))

(defun font-lock-default-unfontify-buffer ()
  ;; Make sure we unfontify etc. in the whole buffer.
  (save-restriction
    (widen)
    (font-lock-unfontify-region (point-min) (point-max))
    (font-lock-after-unfontify-buffer)
    (setq font-lock-fontified nil)))

(defvar font-lock-dont-widen nil
  "If non-nil, font-lock will work on the non-widened buffer.
Useful for things like RMAIL and Info where the whole buffer is not
a very meaningful entity to highlight.")

(defun font-lock-default-fontify-region (beg end loudly)
  (save-buffer-state
      ((parse-sexp-lookup-properties font-lock-syntactic-keywords)
       (old-syntax-table (syntax-table)))
    (unwind-protect
	(save-restriction
	  (unless font-lock-dont-widen (widen))
	  ;; Use the fontification syntax table, if any.
	  (when font-lock-syntax-table
	    (set-syntax-table font-lock-syntax-table))
	  ;; check to see if we should expand the beg/end area for
	  ;; proper multiline matches
	  (when (and font-lock-multiline
		     (> beg (point-min))
		     (get-text-property (1- beg) 'font-lock-multiline))
	    ;; We are just after or in a multiline match.
	    (setq beg (or (previous-single-property-change
			   beg 'font-lock-multiline)
			  (point-min)))
	    (goto-char beg)
	    (setq beg (line-beginning-position)))
	  (when font-lock-multiline
	    (setq end (or (text-property-any end (point-max)
					     'font-lock-multiline nil)
			  (point-max))))
	  (goto-char end)
	  (setq end (line-beginning-position 2))
	  ;; Now do the fontification.
	  (font-lock-unfontify-region beg end)
	  (when font-lock-syntactic-keywords
	    (font-lock-fontify-syntactic-keywords-region beg end))
	  (unless font-lock-keywords-only
	    (font-lock-fontify-syntactically-region beg end loudly))
	  (font-lock-fontify-keywords-region beg end loudly))
      ;; Clean up.
      (set-syntax-table old-syntax-table))))

;; The following must be rethought, since keywords can override fontification.
;      ;; Now scan for keywords, but not if we are inside a comment now.
;      (or (and (not font-lock-keywords-only)
;	       (let ((state (parse-partial-sexp beg end nil nil
;						font-lock-cache-state)))
;		 (or (nth 4 state) (nth 7 state))))
;	  (font-lock-fontify-keywords-region beg end))

(defvar font-lock-extra-managed-props nil
  "Additional text properties managed by font-lock.
This is used by `font-lock-default-unfontify-region' to decide
what properties to clear before refontifying a region.")

(defun font-lock-default-unfontify-region (beg end)
  (save-buffer-state nil
    (remove-list-of-text-properties
     beg end (append
	      font-lock-extra-managed-props
	      (if font-lock-syntactic-keywords
		  '(syntax-table face font-lock-multiline)
		'(face font-lock-multiline))))))

;; Called when any modification is made to buffer text.
(defun font-lock-after-change-function (beg end old-len)
  (let ((inhibit-point-motion-hooks t))
    (save-excursion
      (save-match-data
	;; Rescan between start of lines enclosing the region.
	(font-lock-fontify-region
	 (progn (goto-char beg) (beginning-of-line) (point))
	 (progn (goto-char end) (forward-line 1) (point)))))))

(defun font-lock-fontify-block (&optional arg)
  "Fontify some lines the way `font-lock-fontify-buffer' would.
The lines could be a function or paragraph, or a specified number of lines.
If ARG is given, fontify that many lines before and after point, or 16 lines if
no ARG is given and `font-lock-mark-block-function' is nil.
If `font-lock-mark-block-function' non-nil and no ARG is given, it is used to
delimit the region to fontify."
  (interactive "P")
  (let ((inhibit-point-motion-hooks t) font-lock-beginning-of-syntax-function
	deactivate-mark)
    ;; Make sure we have the right `font-lock-keywords' etc.
    (if (not font-lock-mode) (font-lock-set-defaults))
    (save-excursion
      (save-match-data
	(condition-case error-data
	    (if (or arg (not font-lock-mark-block-function))
		(let ((lines (if arg (prefix-numeric-value arg) 16)))
		  (font-lock-fontify-region
		   (save-excursion (forward-line (- lines)) (point))
		   (save-excursion (forward-line lines) (point))))
	      (funcall font-lock-mark-block-function)
	      (font-lock-fontify-region (point) (mark)))
	  ((error quit) (message "Fontifying block...%s" error-data)))))))

(if (boundp 'facemenu-keymap)
    (define-key facemenu-keymap "\M-g" 'font-lock-fontify-block))

;;; End of Fontification functions.

;;; Additional text property functions.

;; The following text property functions should be builtins.  This means they
;; should be written in C and put with all the other text property functions.
;; In the meantime, those that are used by font-lock.el are defined in Lisp
;; below and given a `font-lock-' prefix.  Those that are not used are defined
;; in Lisp below and commented out.  sm.

(defun font-lock-prepend-text-property (start end prop value &optional object)
  "Prepend to one property of the text from START to END.
Arguments PROP and VALUE specify the property and value to prepend to the value
already in place.  The resulting property values are always lists.
Optional argument OBJECT is the string or buffer containing the text."
  (let ((val (if (listp value) value (list value))) next prev)
    (while (/= start end)
      (setq next (next-single-property-change start prop object end)
	    prev (get-text-property start prop object))
      (put-text-property start next prop
			 (append val (if (listp prev) prev (list prev)))
			 object)
      (setq start next))))

(defun font-lock-append-text-property (start end prop value &optional object)
  "Append to one property of the text from START to END.
Arguments PROP and VALUE specify the property and value to append to the value
already in place.  The resulting property values are always lists.
Optional argument OBJECT is the string or buffer containing the text."
  (let ((val (if (listp value) value (list value))) next prev)
    (while (/= start end)
      (setq next (next-single-property-change start prop object end)
	    prev (get-text-property start prop object))
      (put-text-property start next prop
			 (append (if (listp prev) prev (list prev)) val)
			 object)
      (setq start next))))

(defun font-lock-fillin-text-property (start end prop value &optional object)
  "Fill in one property of the text from START to END.
Arguments PROP and VALUE specify the property and value to put where none are
already in place.  Therefore existing property values are not overwritten.
Optional argument OBJECT is the string or buffer containing the text."
  (let ((start (text-property-any start end prop nil object)) next)
    (while start
      (setq next (next-single-property-change start prop object end))
      (put-text-property start next prop value object)
      (setq start (text-property-any next end prop nil object)))))

;; For completeness: this is to `remove-text-properties' as `put-text-property'
;; is to `add-text-properties', etc.
;(defun remove-text-property (start end property &optional object)
;  "Remove a property from text from START to END.
;Argument PROPERTY is the property to remove.
;Optional argument OBJECT is the string or buffer containing the text.
;Return t if the property was actually removed, nil otherwise."
;  (remove-text-properties start end (list property) object))

;; For consistency: maybe this should be called `remove-single-property' like
;; `next-single-property-change' (not `next-single-text-property-change'), etc.
;(defun remove-single-text-property (start end prop value &optional object)
;  "Remove a specific property value from text from START to END.
;Arguments PROP and VALUE specify the property and value to remove.  The
;resulting property values are not equal to VALUE nor lists containing VALUE.
;Optional argument OBJECT is the string or buffer containing the text."
;  (let ((start (text-property-not-all start end prop nil object)) next prev)
;    (while start
;      (setq next (next-single-property-change start prop object end)
;	    prev (get-text-property start prop object))
;      (cond ((and (symbolp prev) (eq value prev))
;	     (remove-text-property start next prop object))
;	    ((and (listp prev) (memq value prev))
;	     (let ((new (delq value prev)))
;	       (cond ((null new)
;		      (remove-text-property start next prop object))
;		     ((= (length new) 1)
;		      (put-text-property start next prop (car new) object))
;		     (t
;		      (put-text-property start next prop new object))))))
;      (setq start (text-property-not-all next end prop nil object)))))

;;; End of Additional text property functions.

;;; Syntactic regexp fontification functions.

;; These syntactic keyword pass functions are identical to those keyword pass
;; functions below, with the following exceptions; (a) they operate on
;; `font-lock-syntactic-keywords' of course, (b) they are all `defun' as speed
;; is less of an issue, (c) eval of property value does not occur JIT as speed
;; is less of an issue, (d) OVERRIDE cannot be `prepend' or `append' as it
;; makes no sense for `syntax-table' property values, (e) they do not do it
;; LOUDLY as it is not likely to be intensive.

(defun font-lock-apply-syntactic-highlight (highlight)
  "Apply HIGHLIGHT following a match.
HIGHLIGHT should be of the form MATCH-HIGHLIGHT,
see `font-lock-syntactic-keywords'."
  (let* ((match (nth 0 highlight))
	 (start (match-beginning match)) (end (match-end match))
	 (value (nth 1 highlight))
	 (override (nth 2 highlight)))
    (if (not start)
	;; No match but we might not signal an error.
	(or (nth 3 highlight)
	    (error "No match %d in highlight %S" match highlight))
      (when (and (consp value) (not (numberp (car value))))
	(setq value (eval value)))
      (when (stringp value) (setq value (string-to-syntax value)))
      ;; Flush the syntax-cache.  I believe this is not necessary for
      ;; font-lock's use of syntax-ppss, but I'm not 100% sure and it can
      ;; still be necessary for other users of syntax-ppss anyway.
      (syntax-ppss-after-change-function start)
      (cond
       ((not override)
	;; Cannot override existing fontification.
	(or (text-property-not-all start end 'syntax-table nil)
	    (put-text-property start end 'syntax-table value)))
       ((eq override t)
	;; Override existing fontification.
	(put-text-property start end 'syntax-table value))
       ((eq override 'keep)
	;; Keep existing fontification.
	(font-lock-fillin-text-property start end 'syntax-table value))))))

(defun font-lock-fontify-syntactic-anchored-keywords (keywords limit)
  "Fontify according to KEYWORDS until LIMIT.
KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords',
LIMIT can be modified by the value of its PRE-MATCH-FORM."
  (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights
	;; Evaluate PRE-MATCH-FORM.
	(pre-match-value (eval (nth 1 keywords))))
    ;; Set LIMIT to value of PRE-MATCH-FORM or the end of line.
    (if (and (numberp pre-match-value) (> pre-match-value (point)))
	(setq limit pre-match-value)
      (setq limit (line-end-position)))
    (save-match-data
      ;; Find an occurrence of `matcher' before `limit'.
      (while (if (stringp matcher)
		 (re-search-forward matcher limit t)
	       (funcall matcher limit))
	;; Apply each highlight to this instance of `matcher'.
	(setq highlights lowdarks)
	(while highlights
	  (font-lock-apply-syntactic-highlight (car highlights))
	  (setq highlights (cdr highlights)))))
    ;; Evaluate POST-MATCH-FORM.
    (eval (nth 2 keywords))))

(defun font-lock-fontify-syntactic-keywords-region (start end)
  "Fontify according to `font-lock-syntactic-keywords' between START and END.
START should be at the beginning of a line."
  ;; Ensure the beginning of the file is properly syntactic-fontified.
  (when (and font-lock-syntactically-fontified
	     (< font-lock-syntactically-fontified start))
    (setq start (max font-lock-syntactically-fontified (point-min)))
    (setq font-lock-syntactically-fontified end))
  ;; If `font-lock-syntactic-keywords' is a symbol, get the real keywords.
  (when (symbolp font-lock-syntactic-keywords)
    (setq font-lock-syntactic-keywords (font-lock-eval-keywords
					font-lock-syntactic-keywords)))
  ;; If `font-lock-syntactic-keywords' is not compiled, compile it.
  (unless (eq (car font-lock-syntactic-keywords) t)
    (setq font-lock-syntactic-keywords (font-lock-compile-keywords
					font-lock-syntactic-keywords)))
  ;; Get down to business.
  (let ((case-fold-search font-lock-keywords-case-fold-search)
	(keywords (cdr font-lock-syntactic-keywords))
	keyword matcher highlights)
    (while keywords
      ;; Find an occurrence of `matcher' from `start' to `end'.
      (setq keyword (car keywords) matcher (car keyword))
      (goto-char start)
      (while (if (stringp matcher)
		 (re-search-forward matcher end t)
	       (funcall matcher end))
	;; Apply each highlight to this instance of `matcher', which may be
	;; specific highlights or more keywords anchored to `matcher'.
	(setq highlights (cdr keyword))
	(while highlights
	  (if (numberp (car (car highlights)))
	      (font-lock-apply-syntactic-highlight (car highlights))
	    (font-lock-fontify-syntactic-anchored-keywords (car highlights)
							   end))
	  (setq highlights (cdr highlights))))
      (setq keywords (cdr keywords)))))

;;; End of Syntactic regexp fontification functions.

;;; Syntactic fontification functions.

(defun font-lock-fontify-syntactically-region (start end &optional loudly ppss)
  "Put proper face on each string and comment between START and END.
START should be at the beginning of a line."
  (let (state face beg)
    (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name)))
    (goto-char start)
    ;;
    ;; Find the state at the `beginning-of-line' before `start'.
    (setq state (or ppss (syntax-ppss start)))
    ;;
    ;; Find each interesting place between here and `end'.
    (while
	(progn
	  (when (or (nth 3 state) (nth 4 state))
	    (setq face (funcall font-lock-syntactic-face-function state))
	    (setq beg (max (nth 8 state) start))
	    (setq state (parse-partial-sexp (point) end nil nil state
					    'syntax-table))
	    (when face (put-text-property beg (point) 'face face)))
	  (setq state (parse-partial-sexp (point) end nil nil state
					  'syntax-table))
	  (< (point) end)))))

;;; End of Syntactic fontification functions.

;;; Keyword regexp fontification functions.

(defsubst font-lock-apply-highlight (highlight)
  "Apply HIGHLIGHT following a match.
HIGHLIGHT should be of the form MATCH-HIGHLIGHT, see `font-lock-keywords'."
  (let* ((match (nth 0 highlight))
	 (start (match-beginning match)) (end (match-end match))
	 (override (nth 2 highlight)))
    (if (not start)
	;; No match but we might not signal an error.
	(or (nth 3 highlight)
	    (error "No match %d in highlight %S" match highlight))
      (let ((val (eval (nth 1 highlight))))
	(when (eq (car-safe val) 'face)
	  (add-text-properties start end (cddr val))
	  (setq val (cadr val)))
	(cond
	 ((not override)
	  ;; Cannot override existing fontification.
	  (or (text-property-not-all start end 'face nil)
	      (put-text-property start end 'face val)))
	 ((eq override t)
	  ;; Override existing fontification.
	  (put-text-property start end 'face val))
	 ((eq override 'prepend)
	  ;; Prepend to existing fontification.
	  (font-lock-prepend-text-property start end 'face val))
	 ((eq override 'append)
	  ;; Append to existing fontification.
	  (font-lock-append-text-property start end 'face val))
	 ((eq override 'keep)
	  ;; Keep existing fontification.
	  (font-lock-fillin-text-property start end 'face val)))))))

(defsubst font-lock-fontify-anchored-keywords (keywords limit)
  "Fontify according to KEYWORDS until LIMIT.
KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords',
LIMIT can be modified by the value of its PRE-MATCH-FORM."
  (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights
	(lead-start (match-beginning 0))
	;; Evaluate PRE-MATCH-FORM.
	(pre-match-value (eval (nth 1 keywords))))
    ;; Set LIMIT to value of PRE-MATCH-FORM or the end of line.
    (if (not (and (numberp pre-match-value) (> pre-match-value (point))))
	(setq limit (line-end-position))
      (setq limit pre-match-value)
      (when (and font-lock-multiline (>= limit (line-beginning-position 2)))
	;; this is a multiline anchored match
	;; (setq font-lock-multiline t)
	(put-text-property (if (= limit (line-beginning-position 2))
			       (1- limit)
			     (min lead-start (point)))
			   limit
			   'font-lock-multiline t)))
    (save-match-data
      ;; Find an occurrence of `matcher' before `limit'.
      (while (and (< (point) limit)
		  (if (stringp matcher)
		      (re-search-forward matcher limit t)
		    (funcall matcher limit)))
	;; Apply each highlight to this instance of `matcher'.
	(setq highlights lowdarks)
	(while highlights
	  (font-lock-apply-highlight (car highlights))
	  (setq highlights (cdr highlights)))))
    ;; Evaluate POST-MATCH-FORM.
    (eval (nth 2 keywords))))

(defun font-lock-fontify-keywords-region (start end &optional loudly)
  "Fontify according to `font-lock-keywords' between START and END.
START should be at the beginning of a line.
LOUDLY, if non-nil, allows progress-meter bar."
  (unless (eq (car font-lock-keywords) t)
    (setq font-lock-keywords
	  (font-lock-compile-keywords font-lock-keywords t)))
  (let ((case-fold-search font-lock-keywords-case-fold-search)
	(keywords (cdr font-lock-keywords))
	(bufname (buffer-name)) (count 0)
	keyword matcher highlights)
    ;;
    ;; Fontify each item in `font-lock-keywords' from `start' to `end'.
    (while keywords
      (if loudly (message "Fontifying %s... (regexps..%s)" bufname
			  (make-string (incf count) ?.)))
      ;;
      ;; Find an occurrence of `matcher' from `start' to `end'.
      (setq keyword (car keywords) matcher (car keyword))
      (goto-char start)
      (while (and (< (point) end)
		  (if (stringp matcher)
		      (re-search-forward matcher end t)
		    (funcall matcher end)))
	(when (and font-lock-multiline
		   (>= (point)
		       (save-excursion (goto-char (match-beginning 0))
				       (forward-line 1) (point))))
	  ;; this is a multiline regexp match
	  ;; (setq font-lock-multiline t)
	  (put-text-property (if (= (point)
				    (save-excursion
				      (goto-char (match-beginning 0))
				      (forward-line 1) (point)))
				 (1- (point))
			       (match-beginning 0))
			     (point)
			     'font-lock-multiline t))
	;; Apply each highlight to this instance of `matcher', which may be
	;; specific highlights or more keywords anchored to `matcher'.
	(setq highlights (cdr keyword))
	(while highlights
	  (if (numberp (car (car highlights)))
	      (font-lock-apply-highlight (car highlights))
	    (font-lock-fontify-anchored-keywords (car highlights) end))
	  (setq highlights (cdr highlights))))
      (setq keywords (cdr keywords)))))

;;; End of Keyword regexp fontification functions.

;; Various functions.

(defun font-lock-compile-keywords (keywords &optional regexp)
  "Compile KEYWORDS into the form (t KEYWORD ...).
Here KEYWORD is of the form (MATCHER HIGHLIGHT ...) as shown in the
`font-lock-keywords' doc string.
If REGEXP is non-nil, it means these keywords are used for
`font-lock-keywords' rather than for `font-lock-syntactic-keywords'."
  (if (eq (car-safe keywords) t)
      keywords
    (setq keywords (cons t (mapcar 'font-lock-compile-keyword keywords)))
    (if (and regexp
	     (eq (or syntax-begin-function
		     font-lock-beginning-of-syntax-function)
		 'beginning-of-defun)
	     (not beginning-of-defun-function))
	;; Try to detect when a string or comment contains something that
	;; looks like a defun and would thus confuse font-lock.
	(nconc keywords
	       `((,(if defun-prompt-regexp
		       (concat "^\\(?:" defun-prompt-regexp "\\)?\\s(")
		     "^\\s(")
		  (0
		   (if (memq (get-text-property (1- (point)) 'face)
			     '(font-lock-string-face font-lock-doc-face
			       font-lock-comment-face))
		       font-lock-warning-face)
		   prepend)))))
    keywords))

(defun font-lock-compile-keyword (keyword)
  (cond ((nlistp keyword)			; MATCHER
	 (list keyword '(0 font-lock-keyword-face)))
	((eq (car keyword) 'eval)		; (eval . FORM)
	 (font-lock-compile-keyword (eval (cdr keyword))))
	((eq (car-safe (cdr keyword)) 'quote)	; (MATCHER . 'FORM)
	 ;; If FORM is a FACENAME then quote it.  Otherwise ignore the quote.
	 (if (symbolp (nth 2 keyword))
	     (list (car keyword) (list 0 (cdr keyword)))
	   (font-lock-compile-keyword (cons (car keyword) (nth 2 keyword)))))
	((numberp (cdr keyword))		; (MATCHER . MATCH)
	 (list (car keyword) (list (cdr keyword) 'font-lock-keyword-face)))
	((symbolp (cdr keyword))		; (MATCHER . FACENAME)
	 (list (car keyword) (list 0 (cdr keyword))))
	((nlistp (nth 1 keyword))		; (MATCHER . HIGHLIGHT)
	 (list (car keyword) (cdr keyword)))
	(t					; (MATCHER HIGHLIGHT ...)
	 keyword)))

(defun font-lock-eval-keywords (keywords)
  "Evalulate KEYWORDS if a function (funcall) or variable (eval) name."
  (if (listp keywords)
      keywords
    (font-lock-eval-keywords (if (fboundp keywords)
				 (funcall keywords)
			       (eval keywords)))))

(defun font-lock-value-in-major-mode (alist)
  "Return value in ALIST for `major-mode', or ALIST if it is not an alist.
Structure is ((MAJOR-MODE . VALUE) ...) where MAJOR-MODE may be t."
  (if (consp alist)
      (cdr (or (assq major-mode alist) (assq t alist)))
    alist))

(defun font-lock-choose-keywords (keywords level)
  "Return LEVELth element of KEYWORDS.
A LEVEL of nil is equal to a LEVEL of 0, a LEVEL of t is equal to
\(1- (length KEYWORDS))."
  (cond ((not (and (listp keywords) (symbolp (car keywords))))
	 keywords)
	((numberp level)
	 (or (nth level keywords) (car (reverse keywords))))
	((eq level t)
	 (car (reverse keywords)))
	(t
	 (car keywords))))

(defvar font-lock-set-defaults nil)	; Whether we have set up defaults.

(defun font-lock-set-defaults ()
  "Set fontification defaults appropriately for this mode.
Sets various variables using `font-lock-defaults' (or, if nil, using
`font-lock-defaults-alist') and `font-lock-maximum-decoration'."
  ;; Set fontification defaults iff not previously set.
  (unless font-lock-set-defaults
    (set (make-local-variable 'font-lock-set-defaults) t)
    (make-local-variable 'font-lock-fontified)
    (make-local-variable 'font-lock-multiline)
    (let* ((defaults (or font-lock-defaults
			 (cdr (assq major-mode font-lock-defaults-alist))))
	   (keywords
	    (font-lock-choose-keywords (nth 0 defaults)
				       (font-lock-value-in-major-mode font-lock-maximum-decoration)))
	   (local (cdr (assq major-mode font-lock-keywords-alist)))
	   (removed-keywords
	    (cdr-safe (assq major-mode font-lock-removed-keywords-alist))))
      (set (make-local-variable 'font-lock-defaults) defaults)
      ;; Syntactic fontification?
      (when (nth 1 defaults)
	(set (make-local-variable 'font-lock-keywords-only) t))
      ;; Case fold during regexp fontification?
      (when (nth 2 defaults)
	(set (make-local-variable 'font-lock-keywords-case-fold-search) t))
      ;; Syntax table for regexp and syntactic fontification?
      (when (nth 3 defaults)
	(set (make-local-variable 'font-lock-syntax-table)
	     (copy-syntax-table (syntax-table)))
	(dolist (selem (nth 3 defaults))
	  ;; The character to modify may be a single CHAR or a STRING.
	  (let ((syntax (cdr selem)))
	    (dolist (char (if (numberp (car selem))
			      (list (car selem))
			    (mapcar 'identity (car selem))))
	      (modify-syntax-entry char syntax font-lock-syntax-table)))))
      ;; Syntax function for syntactic fontification?
      (when (nth 4 defaults)
	(set (make-local-variable 'font-lock-beginning-of-syntax-function)
	     (nth 4 defaults)))
      ;; Variable alist?
      (dolist (x (nthcdr 5 defaults))
	(set (make-local-variable (car x)) (cdr x)))
      ;; Setup `font-lock-keywords' last because its value might depend
      ;; on other settings (e.g. font-lock-compile-keywords uses
      ;; font-lock-beginning-of-syntax-function).
      (set (make-local-variable 'font-lock-keywords)
	   (font-lock-compile-keywords (font-lock-eval-keywords keywords) t))
      ;; Local fontification?
      (while local
	(font-lock-add-keywords nil (car (car local)) (cdr (car local)))
	(setq local (cdr local)))
      (when removed-keywords
	(font-lock-remove-keywords nil removed-keywords)))))

;;; Colour etc. support.

;; Originally face attributes were specified via `font-lock-face-attributes'.
;; Users then changed the default face attributes by setting that variable.
;; However, we try and be back-compatible and respect its value if set except
;; for faces where M-x customize has been used to save changes for the face.
(when (boundp 'font-lock-face-attributes)
  (let ((face-attributes font-lock-face-attributes))
    (while face-attributes
      (let* ((face-attribute (pop face-attributes))
	     (face (car face-attribute)))
	;; Rustle up a `defface' SPEC from a `font-lock-face-attributes' entry.
	(unless (get face 'saved-face)
	  (let ((foreground (nth 1 face-attribute))
		(background (nth 2 face-attribute))
		(bold-p (nth 3 face-attribute))
		(italic-p (nth 4 face-attribute))
		(underline-p (nth 5 face-attribute))
		face-spec)
	    (when foreground
	      (setq face-spec (cons ':foreground (cons foreground face-spec))))
	    (when background
	      (setq face-spec (cons ':background (cons background face-spec))))
	    (when bold-p
	      (setq face-spec (append '(:weight bold) face-spec)))
	    (when italic-p
	      (setq face-spec (append '(:slant italic) face-spec)))
	    (when underline-p
	      (setq face-spec (append '(:underline t) face-spec)))
	    (custom-declare-face face (list (list t face-spec)) nil)))))))

;; But now we do it the custom way.  Note that `defface' will not overwrite any
;; faces declared above via `custom-declare-face'.
(defface font-lock-comment-face
  '((((type tty pc) (class color) (background light)) (:foreground "red"))
    (((type tty pc) (class color) (background dark)) (:foreground "red1"))
    (((class grayscale) (background light))
     (:foreground "DimGray" :weight bold :slant italic))
    (((class grayscale) (background dark))
     (:foreground "LightGray" :weight bold :slant italic))
    (((class color) (background light)) (:foreground "Firebrick"))
    (((class color) (background dark)) (:foreground "chocolate1"))
    (t (:weight bold :slant italic)))
  "Font Lock mode face used to highlight comments."
  :group 'font-lock-highlighting-faces)

(defface font-lock-string-face
  '((((type tty) (class color)) (:foreground "green"))
    (((class grayscale) (background light)) (:foreground "DimGray" :slant italic))
    (((class grayscale) (background dark)) (:foreground "LightGray" :slant italic))
    (((class color) (background light)) (:foreground "RosyBrown"))
    (((class color) (background dark)) (:foreground "LightSalmon"))
    (t (:slant italic)))
  "Font Lock mode face used to highlight strings."
  :group 'font-lock-highlighting-faces)

(defface font-lock-doc-face
  '((t :inherit font-lock-string-face))
  "Font Lock mode face used to highlight documentation."
  :group 'font-lock-highlighting-faces)

(defface font-lock-keyword-face
  '((((type tty) (class color)) (:foreground "cyan" :weight bold))
    (((class grayscale) (background light)) (:foreground "LightGray" :weight bold))
    (((class grayscale) (background dark)) (:foreground "DimGray" :weight bold))
    (((class color) (background light)) (:foreground "Purple"))
    (((class color) (background dark)) (:foreground "Cyan"))
    (t (:weight bold)))
  "Font Lock mode face used to highlight keywords."
  :group 'font-lock-highlighting-faces)

(defface font-lock-builtin-face
  '((((type tty) (class color)) (:foreground "blue" :weight light))
    (((class grayscale) (background light)) (:foreground "LightGray" :weight bold))
    (((class grayscale) (background dark)) (:foreground "DimGray" :weight bold))
    (((class color) (background light)) (:foreground "Orchid"))
    (((class color) (background dark)) (:foreground "LightSteelBlue"))
    (t (:weight bold)))
  "Font Lock mode face used to highlight builtins."
  :group 'font-lock-highlighting-faces)

(defface font-lock-function-name-face
  '((((type tty) (class color)) (:foreground "blue" :weight bold))
    (((class color) (background light)) (:foreground "Blue"))
    (((class color) (background dark)) (:foreground "LightSkyBlue"))
    (t (:inverse-video t :weight bold)))
  "Font Lock mode face used to highlight function names."
  :group 'font-lock-highlighting-faces)

(defface font-lock-variable-name-face
  '((((type tty) (class color)) (:foreground "yellow" :weight light))
    (((class grayscale) (background light))
     (:foreground "Gray90" :weight bold :slant italic))
    (((class grayscale) (background dark))
     (:foreground "DimGray" :weight bold :slant italic))
    (((class color) (background light)) (:foreground "DarkGoldenrod"))
    (((class color) (background dark)) (:foreground "LightGoldenrod"))
    (t (:weight bold :slant italic)))
  "Font Lock mode face used to highlight variable names."
  :group 'font-lock-highlighting-faces)

(defface font-lock-type-face
  '((((type tty) (class color)) (:foreground "green"))
    (((class grayscale) (background light)) (:foreground "Gray90" :weight bold))
    (((class grayscale) (background dark)) (:foreground "DimGray" :weight bold))
    (((class color) (background light)) (:foreground "ForestGreen"))
    (((class color) (background dark)) (:foreground "PaleGreen"))
    (t (:weight bold :underline t)))
  "Font Lock mode face used to highlight type and classes."
  :group 'font-lock-highlighting-faces)

(defface font-lock-constant-face
  '((((type tty) (class color)) (:foreground "magenta"))
    (((class grayscale) (background light))
     (:foreground "LightGray" :weight bold :underline t))
    (((class grayscale) (background dark))
     (:foreground "Gray50" :weight bold :underline t))
    (((class color) (background light)) (:foreground "CadetBlue"))
    (((class color) (background dark)) (:foreground "Aquamarine"))
    (t (:weight bold :underline t)))
  "Font Lock mode face used to highlight constants and labels."
  :group 'font-lock-highlighting-faces)

(defface font-lock-warning-face
  '((((type tty) (class color)) (:foreground "red"))
    (((class color) (background light)) (:foreground "Red" :weight bold))
    (((class color) (background dark)) (:foreground "Pink" :weight bold))
    (t (:inverse-video t :weight bold)))
  "Font Lock mode face used to highlight warnings."
  :group 'font-lock-highlighting-faces)

(defface font-lock-preprocessor-face
  '((t :inherit 'font-lock-builtin-face))
  "Font Lock mode face used to highlight preprocessor directives."
  :group 'font-lock-highlighting-faces)

;;; End of Colour etc. support.

;;; Menu support.

;; This section of code is commented out because Emacs does not have real menu
;; buttons.  (We can mimic them by putting "( ) " or "(X) " at the beginning of
;; the menu entry text, but with Xt it looks both ugly and embarrassingly
;; amateur.)  If/When Emacs gets real menus buttons, put in menu-bar.el after
;; the entry for "Text Properties" something like:
;;
;; (define-key menu-bar-edit-menu [font-lock]
;;   (cons "Syntax Highlighting" font-lock-menu))
;;
;; and remove a single ";" from the beginning of each line in the rest of this
;; section.  Probably the mechanism for telling the menu code what are menu
;; buttons and when they are on or off needs tweaking.  I have assumed that the
;; mechanism is via `menu-toggle' and `menu-selected' symbol properties.  sm.

;;;;###autoload
;(progn
;  ;; Make the Font Lock menu.
;  (defvar font-lock-menu (make-sparse-keymap "Syntax Highlighting"))
;  ;; Add the menu items in reverse order.
;  (define-key font-lock-menu [fontify-less]
;    '("Less In Current Buffer" . font-lock-fontify-less))
;  (define-key font-lock-menu [fontify-more]
;    '("More In Current Buffer" . font-lock-fontify-more))
;  (define-key font-lock-menu [font-lock-sep]
;    '("--"))
;  (define-key font-lock-menu [font-lock-mode]
;    '("In Current Buffer" . font-lock-mode))
;  (define-key font-lock-menu [global-font-lock-mode]
;    '("In All Buffers" . global-font-lock-mode)))
;
;;;;###autoload
;(progn
;  ;; We put the appropriate `menu-enable' etc. symbol property values on when
;  ;; font-lock.el is loaded, so we don't need to autoload the three variables.
;  (put 'global-font-lock-mode 'menu-toggle t)
;  (put 'font-lock-mode 'menu-toggle t)
;  (put 'font-lock-fontify-more 'menu-enable '(identity))
;  (put 'font-lock-fontify-less 'menu-enable '(identity)))
;
;;; Put the appropriate symbol property values on now.  See above.
;(put 'global-font-lock-mode 'menu-selected 'global-font-lock-mode)
;(put 'font-lock-mode 'menu-selected 'font-lock-mode)
;(put 'font-lock-fontify-more 'menu-enable '(nth 2 font-lock-fontify-level))
;(put 'font-lock-fontify-less 'menu-enable '(nth 1 font-lock-fontify-level))
;
;(defvar font-lock-fontify-level nil)	; For less/more fontification.
;
;(defun font-lock-fontify-level (level)
;  (let ((font-lock-maximum-decoration level))
;    (when font-lock-mode
;      (font-lock-mode))
;    (font-lock-mode)
;    (when font-lock-verbose
;      (message "Fontifying %s... level %d" (buffer-name) level))))
;
;(defun font-lock-fontify-less ()
;  "Fontify the current buffer with less decoration.
;See `font-lock-maximum-decoration'."
;  (interactive)
;  ;; Check in case we get called interactively.
;  (if (nth 1 font-lock-fontify-level)
;      (font-lock-fontify-level (1- (car font-lock-fontify-level)))
;    (error "No less decoration")))
;
;(defun font-lock-fontify-more ()
;  "Fontify the current buffer with more decoration.
;See `font-lock-maximum-decoration'."
;  (interactive)
;  ;; Check in case we get called interactively.
;  (if (nth 2 font-lock-fontify-level)
;      (font-lock-fontify-level (1+ (car font-lock-fontify-level)))
;    (error "No more decoration")))
;
;;; This should be called by `font-lock-set-defaults'.
;(defun font-lock-set-menu ()
;  ;; Activate less/more fontification entries if there are multiple levels for
;  ;; the current buffer.  Sets `font-lock-fontify-level' to be of the form
;  ;; (CURRENT-LEVEL IS-LOWER-LEVEL-P IS-HIGHER-LEVEL-P) for menu activation.
;  (let ((keywords (or (nth 0 font-lock-defaults)
;		      (nth 1 (assq major-mode font-lock-defaults-alist))))
;	(level (font-lock-value-in-major-mode font-lock-maximum-decoration)))
;    (make-local-variable 'font-lock-fontify-level)
;    (if (or (symbolp keywords) (= (length keywords) 1))
;	(font-lock-unset-menu)
;      (cond ((eq level t)
;	     (setq level (1- (length keywords))))
;	    ((or (null level) (zerop level))
;	     ;; The default level is usually, but not necessarily, level 1.
;	     (setq level (- (length keywords)
;			    (length (member (eval (car keywords))
;					    (mapcar 'eval (cdr keywords))))))))
;      (setq font-lock-fontify-level (list level (> level 1)
;					  (< level (1- (length keywords))))))))
;
;;; This should be called by `font-lock-unset-defaults'.
;(defun font-lock-unset-menu ()
;  ;; Deactivate less/more fontification entries.
;  (setq font-lock-fontify-level nil))

;;; End of Menu support.

;;; Various regexp information shared by several modes.
;;; Information specific to a single mode should go in its load library.

;; Font Lock support for C, C++, Objective-C and Java modes is now in
;; cc-fonts.el (and required by cc-mode.el).  However, the below function
;; should stay in font-lock.el, since it is used by other libraries.  sm.

(defun font-lock-match-c-style-declaration-item-and-skip-to-next (limit)
  "Match, and move over, any declaration/definition item after point.
Matches after point, but ignores leading whitespace and `*' characters.
Does not move further than LIMIT.

The expected syntax of a declaration/definition item is `word' (preceded by
optional whitespace and `*' characters and proceeded by optional whitespace)
optionally followed by a `('.  Everything following the item (but belonging to
it) is expected to be skip-able by `scan-sexps', and items are expected to be
separated with a `,' and to be terminated with a `;'.

Thus the regexp matches after point:	word (
					^^^^ ^
Where the match subexpressions are:	  1  2

The item is delimited by (match-beginning 1) and (match-end 1).
If (match-beginning 2) is non-nil, the item is followed by a `('.

This function could be MATCHER in a MATCH-ANCHORED `font-lock-keywords' item."
  (when (looking-at "[ \n\t*]*\\(\\sw+\\)[ \t\n]*\\(((?\\)?")
    (when (and (match-end 2) (> (- (match-end 2) (match-beginning 2)) 1))
      ;; If `word' is followed by a double open-paren, it's probably
      ;; a macro used for "int myfun P_ ((int arg1))".  Let's go back one
      ;; word to try and match `myfun' rather than `P_'.
      (let ((pos (point)))
	(skip-chars-backward " \t\n")
	(skip-syntax-backward "w")
	(unless (looking-at "\\(\\sw+\\)[ \t\n]*\\sw+[ \t\n]*\\(((?\\)?")
	  ;; Looks like it was something else, so go back to where we
	  ;; were and reset the match data by rematching.
	  (goto-char pos)
	  (looking-at "[ \n\t*]*\\(\\sw+\\)[ \t\n]*\\(((?\\)?"))))
    (save-match-data
      (condition-case nil
	  (save-restriction
	    ;; Restrict to the LIMIT.
	    (narrow-to-region (point-min) limit)
	    (goto-char (match-end 1))
	    ;; Move over any item value, etc., to the next item.
	    (while (not (looking-at "[ \t\n]*\\(\\(,\\)\\|;\\|\\'\\)"))
	      (goto-char (or (scan-sexps (point) 1) (point-max))))
	    (if (match-end 2)
		(goto-char (match-end 2))))
	(error t)))))

;; Lisp.

(defconst lisp-font-lock-keywords-1
  (eval-when-compile
    (list
     ;;
     ;; Definitions.
     (list (concat "(\\(def\\("
		   ;; Function declarations.
		   "\\(advice\\|varalias\\|alias\\|generic\\|macro\\*?\\|method\\|"
                   "setf\\|subst\\*?\\|un\\*?\\|"
                   "ine-\\(condition\\|\\(?:derived\\|minor\\)-mode\\|"
                   "method-combination\\|setf-expander\\|skeleton\\|widget\\|"
                   "function\\|\\(compiler\\|modify\\|symbol\\)-macro\\)\\)\\|"
		   ;; Variable declarations.
		   "\\(const\\(ant\\)?\\|custom\\|face\\|parameter\\|var\\)\\|"
		   ;; Structure declarations.
		   "\\(class\\|group\\|theme\\|package\\|struct\\|type\\)"
		   "\\)\\)\\>"
		   ;; Any whitespace and defined object.
		   "[ \t'\(]*"
		   "\\(setf[ \t]+\\sw+)\\|\\sw+\\)?")
	   '(1 font-lock-keyword-face)
	   '(9 (cond ((match-beginning 3) font-lock-function-name-face)
		     ((match-beginning 6) font-lock-variable-name-face)
		     (t font-lock-type-face))
	       nil t))
     ;;
     ;; Emacs Lisp autoload cookies.
     '("^;;;###\\(autoload\\)" 1 font-lock-warning-face prepend)
     ))
  "Subdued level highlighting for Lisp modes.")

(defconst lisp-font-lock-keywords-2
  (append lisp-font-lock-keywords-1
   (eval-when-compile
     (list
      ;;
      ;; Control structures.  Emacs Lisp forms.
      (cons (concat
	     "(" (regexp-opt
		  '("cond" "if" "while" "let" "let*"
		    "prog" "progn" "progv" "prog1" "prog2" "prog*"
		    "inline" "lambda" "save-restriction" "save-excursion"
		    "save-window-excursion" "save-selected-window"
		    "save-match-data" "save-current-buffer" "unwind-protect"
		    "condition-case" "track-mouse"
		    "eval-after-load" "eval-and-compile" "eval-when-compile"
		    "eval-when"
		    "with-current-buffer" "with-electric-help"
		    "with-output-to-string" "with-output-to-temp-buffer"
		    "with-temp-buffer" "with-temp-file" "with-temp-message"
		    "with-timeout") t)
	     "\\>")
	    1)
      ;;
      ;; Control structures.  Common Lisp forms.
      (cons (concat
	     "(" (regexp-opt
		  '("when" "unless" "case" "ecase" "typecase" "etypecase"
		    "ccase" "ctypecase" "handler-case" "handler-bind"
		    "restart-bind" "restart-case" "in-package"
		    "cerror" "break" "ignore-errors"
		    "loop" "do" "do*" "dotimes" "dolist" "the" "locally"
		    "proclaim" "declaim" "declare" "symbol-macrolet"
		    "lexical-let" "lexical-let*" "flet" "labels" "compiler-let"
		    "destructuring-bind" "macrolet" "tagbody" "block"
		    "return" "return-from") t)
	     "\\>")
	    1)
      ;;
      ;; Exit/Feature symbols as constants.
      (list (concat "(\\(catch\\|throw\\|featurep\\|provide\\|require\\)\\>"
		    "[ \t']*\\(\\sw+\\)?")
	    '(1 font-lock-keyword-face)
	    '(2 font-lock-constant-face nil t))
      ;;
      ;; Erroneous structures.
      '("(\\(abort\\|assert\\|error\\|signal\\)\\>" 1 font-lock-warning-face)
      ;;
      ;; Words inside \\[] tend to be for `substitute-command-keys'.
      '("\\\\\\\\\\[\\(\\sw+\\)]" 1 font-lock-constant-face prepend)
      ;;
      ;; Words inside `' tend to be symbol names.
      '("`\\(\\sw\\sw+\\)'" 1 font-lock-constant-face prepend)
      ;;
      ;; Constant values.
      '("\\<:\\sw+\\>" 0 font-lock-builtin-face)
      ;;
      ;; ELisp and CLisp `&' keywords as types.
      '("\\&\\sw+\\>" . font-lock-type-face)
      ;;
      ;; CL `with-' and `do-' constructs
      '("(\\(\\(do-\\|with-\\)\\(\\s_\\|\\w\\)*\\)" 1 font-lock-keyword-face)
      )))
  "Gaudy level highlighting for Lisp modes.")

(defvar lisp-font-lock-keywords lisp-font-lock-keywords-1
  "Default expressions to highlight in Lisp modes.")

(provide 'font-lock)

(when (eq font-lock-support-mode 'jit-lock-mode)
  (require 'jit-lock))

;;; font-lock.el ends here
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.