https-bitbucket.org-bityvip /components/com_breezingforms/markdown.php

Language PHP Lines 1975
MD5 Hash 7a39b908098936c3ee9d75d07170b4f9 Estimated Cost $30,660 (why?)
Repository https://bitbucket.org/izubizarreta/https-bitbucket.org-bityvip.git View Raw File View Project SPDX
   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
<?php
defined('_JEXEC') or die('Direct Access to this location is not allowed.');
/**
* BreezingForms - A Joomla Forms Application
* @version 1.8
* @package BreezingForms
* @copyright (C) 2008-2012 by Markus Bopp
* @license Released under the terms of the GNU General Public License
**/


global	$MarkdownPHPVersion, $MarkdownSyntaxVersion,
		$md_empty_element_suffix, $md_tab_width,
		$md_nested_brackets_depth, $md_nested_brackets, 
		$md_escape_table, $md_backslash_escape_table, 
		$md_list_level;

$MarkdownPHPVersion    = 'Extra 1.0.1';
$MarkdownSyntaxVersion = '1.0.1'; 


#
# Global default settings:
#
$md_empty_element_suffix = " />";     # Change to ">" for HTML output
$md_tab_width = 4;


$md_wp_posts    = true;  # Set to false to remove Markdown from posts.
$md_wp_comments = true;  # Set to false to remove Markdown from comments.


if (isset($wp_version)) {
	
	# Post content and excerpts
	if ($md_wp_posts) {
		remove_filter('the_content',  'wpautop');
		remove_filter('the_excerpt',  'wpautop');
		add_filter('the_content',     'Markdown', 6);
		add_filter('get_the_excerpt', 'Markdown', 6);
		add_filter('get_the_excerpt', 'trim', 7);
		add_filter('the_excerpt',     'md_add_p');
		add_filter('the_excerpt_rss', 'md_strip_p');
		
		remove_filter('content_save_pre',  'balanceTags', 50);
		remove_filter('excerpt_save_pre',  'balanceTags', 50);
		add_filter('the_content',  	  'balanceTags', 50);
		add_filter('get_the_excerpt', 'balanceTags', 9);
		
		function md_add_p($text) {
			if (strlen($text) == 0) return;
			if (strcasecmp(substr($text, -3), '<p>') == 0) return $text;
			return '<p>'.$text.'</p>';
		}
		function md_strip_p($t) { return preg_replace('{</?[pP]>}', '', $t); }
	}
	
	# Comments
	if ($md_wp_comments) {
		remove_filter('comment_text', 'wpautop');
		remove_filter('comment_text', 'make_clickable');
		add_filter('pre_comment_content', 'Markdown', 6);
		add_filter('pre_comment_content', 'md_hide_tags', 8);
		add_filter('pre_comment_content', 'md_show_tags', 12);
		add_filter('get_comment_text',    'Markdown', 6);
		add_filter('get_comment_excerpt', 'Markdown', 6);
		add_filter('get_comment_excerpt', 'md_strip_p', 7);
	
		global $md_hidden_tags;
		$md_hidden_tags = array(
			'<p>'	=> md5('<p>'),		'</p>'	=> md5('</p>'),
			'<pre>'	=> md5('<pre>'),	'</pre>'=> md5('</pre>'),
			'<ol>'	=> md5('<ol>'),		'</ol>'	=> md5('</ol>'),
			'<ul>'	=> md5('<ul>'),		'</ul>'	=> md5('</ul>'),
			'<li>'	=> md5('<li>'),		'</li>'	=> md5('</li>'),
			);
		
		function md_hide_tags($text) {
			global $md_hidden_tags;
			return str_replace(array_keys($md_hidden_tags), 
								array_values($md_hidden_tags), $text);
		}
		function md_show_tags($text) {
			global $md_hidden_tags;
			return str_replace(array_values($md_hidden_tags), 
								array_keys($md_hidden_tags), $text);
		}
	}
}


# -- bBlog Plugin Info --------------------------------------------------------
function identify_modifier_markdown() {
	global $MarkdownPHPVersion;
	return array(
		'name'			=> 'markdown',
		'type'			=> 'modifier',
		'nicename'		=> 'PHP Markdown Extra',
		'description'	=> 'A text-to-HTML conversion tool for web writers',
		'authors'		=> 'Michel Fortin and John Gruber',
		'licence'		=> 'GPL',
		'version'		=> $MarkdownPHPVersion,
		'help'			=> '<a href="http://daringfireball.net/projects/markdown/syntax">Markdown syntax</a> allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by <a href="http://daringfireball.net/">John Gruber</a>. <a href="http://www.michelf.com/projects/php-markdown/">More...</a>'
	);
}

# -- Smarty Modifier Interface ------------------------------------------------
function smarty_modifier_markdown($text) {
	return Markdown($text);
}

# -- Textile Compatibility Mode -----------------------------------------------
# Rename this file to "classTextile.php" and it can replace Textile anywhere.
if (strcasecmp(substr(__FILE__, -16), "classTextile.php") == 0) {
	# Try to include PHP SmartyPants. Should be in the same directory.
	@include_once 'smartypants.php';
	# Fake Textile class. It calls Markdown instead.
	class Textile {
		function TextileThis($text, $lite='', $encode='', $noimage='', $strict='') {
			if ($lite == '' && $encode == '')   $text = Markdown($text);
			if (function_exists('SmartyPants')) $text = SmartyPants($text);
			return $text;
		}
	}
}



#
# Globals:
#

# Regex to match balanced [brackets].
# Needed to insert a maximum bracked depth while converting to PHP.
$md_nested_brackets_depth = 6;
$md_nested_brackets = 
	str_repeat('(?>[^\[\]]+|\[', $md_nested_brackets_depth).
	str_repeat('\])*', $md_nested_brackets_depth);

# Table of hash values for escaped characters:
$md_escape_table = array(
	"\\" => md5("\\"),
	"`" => md5("`"),
	"*" => md5("*"),
	"_" => md5("_"),
	"{" => md5("{"),
	"}" => md5("}"),
	"[" => md5("["),
	"]" => md5("]"),
	"(" => md5("("),
	")" => md5(")"),
	">" => md5(">"),
	"#" => md5("#"),
	"+" => md5("+"),
	"-" => md5("-"),
	"." => md5("."),
	"!" => md5("!"),
	":" => md5(":"),
	"|" => md5("|"),
);
# Create an identical table but for escaped characters.
$md_backslash_escape_table;
foreach ($md_escape_table as $key => $char)
	$md_backslash_escape_table["\\$key"] = $char;



function Markdown($text) {
#
# Main function. The order in which other subs are called here is
# essential. Link and image substitutions need to happen before
# _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a>
# and <img> tags get encoded.
#
	# Clear the global hashes. If we don't clear these, you get conflicts
	# from other articles when generating a page which contains more than
	# one article (e.g. an index page that shows the N most recent
	# articles):
	global $md_urls, $md_titles, $md_html_blocks, $md_html_hashes;
	$md_urls = array();
	$md_titles = array();
	$md_html_blocks = array();
	$md_html_hashes = array();

	# Standardize line endings:
	#   DOS to Unix and Mac to Unix
	$text = str_replace(array("\r\n", "\r"), "\n", $text);

	# Make sure $text ends with a couple of newlines:
	$text .= "\n\n";

	# Convert all tabs to spaces.
	$text = _Detab($text);

	# Turn block-level HTML blocks into hash entries
	$text = _HashHTMLBlocks($text);

	# Strip any lines consisting only of spaces and tabs.
	# This makes subsequent regexen easier to write, because we can
	# match consecutive blank lines with /\n+/ instead of something
	# contorted like /[ \t]*\n+/ .
	$text = preg_replace('/^[ \t]+$/m', '', $text);

	# Strip link definitions, store in hashes.
	$text = _StripLinkDefinitions($text);

	$text = _RunBlockGamut($text, FALSE);

	$text = _UnescapeSpecialChars($text);

	return $text . "\n";
}


function _StripLinkDefinitions($text) {
#
# Strips link definitions from text, stores the URLs and titles in
# hash references.
#
	global $md_tab_width;
	$less_than_tab = $md_tab_width - 1;

	# Link defs are in the form: ^[id]: url "optional title"
	$text = preg_replace_callback('{
						^[ ]{0,'.$less_than_tab.'}\[(.+)\]:	# id = $1
						  [ \t]*
						  \n?				# maybe *one* newline
						  [ \t]*
						<?(\S+?)>?			# url = $2
						  [ \t]*
						  \n?				# maybe one newline
						  [ \t]*
						(?:
							(?<=\s)			# lookbehind for whitespace
							["(]
							(.+?)			# title = $3
							[")]
							[ \t]*
						)?	# title is optional
						(?:\n+|\Z)
		}xm',
		'_StripLinkDefinitions_callback',
		$text);
	return $text;
}
function _StripLinkDefinitions_callback($matches) {
	global $md_urls, $md_titles;
	$link_id = strtolower($matches[1]);
	$md_urls[$link_id] = _EncodeAmpsAndAngles($matches[2]);
	if (isset($matches[3]))
		$md_titles[$link_id] = str_replace('"', '&quot;', $matches[3]);
	return ''; # String that will replace the block
}


function _HashHTMLBlocks($text) {
#
# Hashify HTML Blocks and "clean tags".
#
# We only want to do this for block-level HTML tags, such as headers,
# lists, and tables. That's because we still want to wrap <p>s around
# "paragraphs" that are wrapped in non-block-level tags, such as anchors,
# phrase emphasis, and spans. The list of tags we're looking for is
# hard-coded.
#
# This works by calling _HashHTMLBlocks_InMarkdown, which then calls
# _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1" 
# attribute is found whitin a tag, _HashHTMLBlocks_InHTML calls back
#  _HashHTMLBlocks_InMarkdown to handle the Markdown syntax within the tag.
# These two functions are calling each other. It's recursive!
# 
	global	$block_tags, $context_block_tags, $contain_span_tags, 
			$clean_tags, $auto_close_tags;
	
	# Tags that are always treated as block tags:
	$block_tags = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|'.
					'form|fieldset|iframe|hr|legend';
	
	# Tags treated as block tags only if the opening tag is alone on it's line:
	$context_block_tags = 'script|noscript|math|ins|del';
	
	# Tags where markdown="1" default to span mode:
	$contain_span_tags = 'p|h[1-6]|li|dd|dt|td|th|legend';
	
	# Tags which must not have their contents modified, no matter where 
	# they appear:
	$clean_tags = 'script|math';
	
	# Tags that do not need to be closed.
	$auto_close_tags = 'hr|img';
	
	# Regex to match any tag.
	global $tag_match;
	$tag_match =
		'{
			(					# $2: Capture hole tag.
				</?					# Any opening or closing tag.
					[\w:$]+			# Tag name.
					\s*				# Whitespace.
					(?:
						".*?"		|	# Double quotes (can contain `>`)
						\'.*?\'   	|	# Single quotes (can contain `>`)
						.+?				# Anything but quotes and `>`.
					)*?
				>					# End of tag.
			|
				<!--    .*?     -->	# HTML Comment
			|
				<\?     .*?     \?>	# Processing instruction
			|
				<!\[CDATA\[.*?\]\]>	# CData Block
			)
		}xs';
	
	#
	# Call the HTML-in-Markdown hasher.
	#
	list($text, ) = _HashHTMLBlocks_InMarkdown($text);
	
	return $text;
}
function _HashHTMLBlocks_InMarkdown($text, $indent = 0, 
									$enclosing_tag = '', $md_span = false)
{
#
# Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags.
#
# *   $indent is the number of space to be ignored when checking for code 
#     blocks. This is important because if we don't take the indent into 
#     account, something like this (which looks right) won't work as expected:
#
#     <div>
#         <div markdown="1">
#         Hello World.  <-- Is this a Markdown code block or text?
#         </div>  <-- Is this a Markdown code block or a real tag?
#     <div>
#
#     If you don't like this, just don't indent the tag on which
#     you apply the markdown="1" attribute.
#
# *   If $enclosing_tag is not empty, stops at the first unmatched closing 
#     tag with that name. Nested tags supported.
#
# *   If $md_span is true, text inside must treated as span. So any double 
#     newline will be replaced by a single newline so that it does not create 
#     paragraphs.
#
# Returns an array of that form: ( processed text , remaining text )
#
	global	$block_tags, $context_block_tags, $clean_tags, $auto_close_tags,
			$tag_match;
	
	if ($text === '') return array('', '');

	# Regex to check for the presense of newlines around a block tag.
	$newline_match_before = "/(?:^\n?|\n\n) *$/";
	$newline_match_after = 
		'{
			^						# Start of text following the tag.
			(?:[ ]*<!--.*?-->)?		# Optional comment.
			[ ]*\n					# Must be followed by newline.
		}xs';
	
	# Regex to match any tag.
	$block_tag_match =
		'{
			(					# $2: Capture hole tag.
				</?					# Any opening or closing tag.
					(?:				# Tag name.
						'.$block_tags.'			|
						'.$context_block_tags.'	|
						'.$clean_tags.'        	|
						(?!\s)'.$enclosing_tag.'
					)
					\s*				# Whitespace.
					(?:
						".*?"		|	# Double quotes (can contain `>`)
						\'.*?\'   	|	# Single quotes (can contain `>`)
						.+?				# Anything but quotes and `>`.
					)*?
				>					# End of tag.
			|
				<!--    .*?     -->	# HTML Comment
			|
				<\?     .*?     \?>	# Processing instruction
			|
				<!\[CDATA\[.*?\]\]>	# CData Block
			)
		}xs';

	
	$depth = 0;		# Current depth inside the tag tree.
	$parsed = "";	# Parsed text that will be returned.

	#
	# Loop through every tag until we find the closing tag of the parent
	# or loop until reaching the end of text if no parent tag specified.
	#
	do {
		#
		# Split the text using the first $tag_match pattern found.
		# Text before  pattern will be first in the array, text after
		# pattern will be at the end, and between will be any catches made 
		# by the pattern.
		#
		$parts = preg_split($block_tag_match, $text, 2, 
							PREG_SPLIT_DELIM_CAPTURE);
		
		# If in Markdown span mode, replace any multiple newlines that would 
		# trigger a new paragraph.
		if ($md_span) {
			$parts[0] = preg_replace('/\n\n/', "\n", $parts[0]);
		}
		
		$parsed .= $parts[0]; # Text before current tag.
		
		# If end of $text has been reached. Stop loop.
		if (count($parts) < 3) {
			$text = "";
			break;
		}
		
		$tag  = $parts[1]; # Tag to handle.
		$text = $parts[2]; # Remaining text after current tag.
		
		#
		# Check for: Tag inside code block or span
		#
		if (# Find current paragraph
			preg_match('/(?>^\n?|\n\n)((?>.\n?)+?)$/', $parsed, $matches) &&
			(
			# Then match in it either a code block...
			preg_match('/^ {'.($indent+4).'}.*(?>\n {'.($indent+4).'}.*)*'.
						'(?!\n)$/', $matches[1], $x) ||
			# ...or unbalenced code span markers. (the regex matches balenced)
			!preg_match('/^(?>[^`]+|(`+)(?>[^`]+|(?!\1[^`])`)*?\1(?!`))*$/s',
						 $matches[1])
			))
		{
			# Tag is in code block or span and may not be a tag at all. So we
			# simply skip the first char (should be a `<`).
			$parsed .= $tag{0};
			$text = substr($tag, 1) . $text; # Put back $tag minus first char.
		}
		#
		# Check for: Opening Block level tag or
		#            Opening Content Block tag (like ins and del) 
		#               used as a block tag (tag is alone on it's line).
		#
		else if (preg_match("{^<(?:$block_tags)\b}", $tag) ||
			(	preg_match("{^<(?:$context_block_tags)\b}", $tag) &&
				preg_match($newline_match_before, $parsed) &&
				preg_match($newline_match_after, $text)	)
			)
		{
			# Need to parse tag and following text using the HTML parser.
			list($block_text, $text) = 
				_HashHTMLBlocks_InHTML($tag . $text,
									"_HashHTMLBlocks_HashBlock", TRUE);
			
			# Make sure it stays outside of any paragraph by adding newlines.
			$parsed .= "\n\n$block_text\n\n";
		}
		#
		# Check for: Clean tag (like script, math)
		#            HTML Comments, processing instructions.
		#
		else if (preg_match("{^<(?:$clean_tags)\b}", $tag) ||
			$tag{1} == '!' || $tag{1} == '?')
		{
			# Need to parse tag and following text using the HTML parser.
			# (don't check for markdown attribute)
			list($block_text, $text) = 
				_HashHTMLBlocks_InHTML($tag . $text, 
									"_HashHTMLBlocks_HashClean", FALSE);
			
			$parsed .= $block_text;
		}
		#
		# Check for: Tag with same name as enclosing tag.
		#
		else if ($enclosing_tag !== '' &&
			# Same name as enclosing tag.
			preg_match("{^</?(?:$enclosing_tag)\b}", $tag))
		{
			#
			# Increase/decrease nested tag count.
			#
			if ($tag{1} == '/')						$depth--;
			else if ($tag{strlen($tag)-2} != '/')	$depth++;

			if ($depth < 0) {
				#
				# Going out of parent element. Clean up and break so we
				# return to the calling function.
				#
				$text = $tag . $text;
				break;
			}
			
			$parsed .= $tag;
		}
		else {
			$parsed .= $tag;
		}
	} while ($depth >= 0);
	
	return array($parsed, $text);
}
function _HashHTMLBlocks_InHTML($text, $hash_function, $md_attr) {
#
# Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags.
#
# *   Calls $hash_function to convert any blocks.
# *   Stops when the first opening tag closes.
# *   $md_attr indicate if the use of the `markdown="1"` attribute is allowed.
#     (it is not inside clean tags)
#
# Returns an array of that form: ( processed text , remaining text )
#
	global $auto_close_tags, $contain_span_tags, $tag_match;
	
	if ($text === '') return array('', '');
	
	# Regex to match `markdown` attribute inside of a tag.
	$markdown_attr_match = '
		{
			\s*			# Eat whitespace before the `markdown` attribute
			markdown
			\s*=\s*
			(["\'])		# $1: quote delimiter		
			(.*?)		# $2: attribute value
			\1			# matching delimiter	
		}xs';
	
	$original_text = $text;		# Save original text in case of faliure.
	
	$depth		= 0;	# Current depth inside the tag tree.
	$block_text	= "";	# Temporary text holder for current text.
	$parsed		= "";	# Parsed text that will be returned.

	#
	# Get the name of the starting tag.
	#
	if (preg_match("/^<([\w:$]*)\b/", $text, $matches))
		$base_tag_name = $matches[1];

	#
	# Loop through every tag until we find the corresponding closing tag.
	#
	do {
		#
		# Split the text using the first $tag_match pattern found.
		# Text before  pattern will be first in the array, text after
		# pattern will be at the end, and between will be any catches made 
		# by the pattern.
		#
		$parts = preg_split($tag_match, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
		
		if (count($parts) < 3) {
			#
			# End of $text reached with unbalenced tag(s).
			# In that case, we return original text unchanged and pass the
			# first character as filtered to prevent an infinite loop in the 
			# parent function.
			#
			return array($original_text{0}, substr($original_text, 1));
		}
		
		$block_text .= $parts[0]; # Text before current tag.
		$tag         = $parts[1]; # Tag to handle.
		$text        = $parts[2]; # Remaining text after current tag.
		
		#
		# Check for: Auto-close tag (like <hr/>)
		#			 Comments and Processing Instructions.
		#
		if (preg_match("{^</?(?:$auto_close_tags)\b}", $tag) ||
			$tag{1} == '!' || $tag{1} == '?')
		{
			# Just add the tag to the block as if it was text.
			$block_text .= $tag;
		}
		else {
			#
			# Increase/decrease nested tag count. Only do so if
			# the tag's name match base tag's.
			#
			if (preg_match("{^</?$base_tag_name\b}", $tag)) {
				if ($tag{1} == '/')						$depth--;
				else if ($tag{strlen($tag)-2} != '/')	$depth++;
			}
			
			#
			# Check for `markdown="1"` attribute and handle it.
			#
			if ($md_attr && 
				preg_match($markdown_attr_match, $tag, $attr_matches) &&
				preg_match('/^(?:1|block|span)$/', $attr_matches[2]))
			{
				# Remove `markdown` attribute from opening tag.
				$tag = preg_replace($markdown_attr_match, '', $tag);
				
				# Check if text inside this tag must be parsed in span mode.
				$md_mode = $attr_matches[2];
				$span_mode = $md_mode == 'span' || $md_mode != 'block' &&
							preg_match("{^<(?:$contain_span_tags)\b}", $tag);
				
				# Calculate indent before tag.
				preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches);
				$indent = strlen($matches[1]);
				
				# End preceding block with this tag.
				$block_text .= $tag;
				$parsed .= $hash_function($block_text, $span_mode);
				
				# Get enclosing tag name for the ParseMarkdown function.
				preg_match('/^<([\w:$]*)\b/', $tag, $matches);
				$tag_name = $matches[1];
				
				# Parse the content using the HTML-in-Markdown parser.
				list ($block_text, $text)
					= _HashHTMLBlocks_InMarkdown($text, $indent, 
													$tag_name, $span_mode);
				
				# Outdent markdown text.
				if ($indent > 0) {
					$block_text = preg_replace("/^[ ]{1,$indent}/m", "", 
												$block_text);
				}
				
				# Append tag content to parsed text.
				if (!$span_mode)	$parsed .= "\n\n$block_text\n\n";
				else				$parsed .= "$block_text";
				
				# Start over a new block.
				$block_text = "";
			}
			else $block_text .= $tag;
		}
		
	} while ($depth > 0);
	
	#
	# Hash last block text that wasn't processed inside the loop.
	#
	$parsed .= $hash_function($block_text);
	
	return array($parsed, $text);
}
function _HashHTMLBlocks_HashBlock($text) {
	global $md_html_hashes, $md_html_blocks;
	$key = md5($text);
	$md_html_hashes[$key] = $text;
	$md_html_blocks[$key] = $text;
	return $key; # String that will replace the tag.
}
function _HashHTMLBlocks_HashClean($text) {
	global $md_html_hashes;
	$key = md5($text);
	$md_html_hashes[$key] = $text;
	return $key; # String that will replace the clean tag.
}


function _HashBlock($text) {
#
# Called whenever a tag must be hashed. When a function insert a block-level 
# tag in $text, it pass through this function and is automaticaly escaped, 
# which remove the need to call _HashHTMLBlocks at every step.
#
	# Swap back any tag hash found in $text so we do not have to _UnhashTags
	# multiple times at the end. Must do this because of 
	$text = _UnhashTags($text);
	
	# Then hash the block as normal.
	return _HashHTMLBlocks_HashBlock($text);
}


function _RunBlockGamut($text, $hash_html_blocks = TRUE) {
#
# These are all the transformations that form block-level
# tags like paragraphs, headers, and list items.
#
	if ($hash_html_blocks) {
		# We need to escape raw HTML in Markdown source before doing anything 
		# else. This need to be done for each block, and not only at the 
		# begining in the Markdown function since hashed blocks can be part of
		# a list item and could have been indented. Indented blocks would have 
		# been seen as a code block in previous pass of _HashHTMLBlocks.
		$text = _HashHTMLBlocks($text);
	}

	$text = _DoHeaders($text);
	$text = _DoTables($text);

	# Do Horizontal Rules:
	global $md_empty_element_suffix;
	$text = preg_replace(
		array('{^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$}emx',
			  '{^[ ]{0,2}([ ]? -[ ]?){3,}[ \t]*$}emx',
			  '{^[ ]{0,2}([ ]? _[ ]?){3,}[ \t]*$}emx'),
		"_HashBlock('\n<hr$md_empty_element_suffix\n')", 
		$text);

	$text = _DoLists($text);
	$text = _DoDefLists($text);
	$text = _DoCodeBlocks($text);
	$text = _DoBlockQuotes($text);
	$text = _FormParagraphs($text);

	return $text;
}


function _RunSpanGamut($text) {
#
# These are all the transformations that occur *within* block-level
# tags like paragraphs, headers, and list items.
#
	global $md_empty_element_suffix;

	$text = _DoCodeSpans($text);

	$text = _EscapeSpecialChars($text);

	# Process anchor and image tags. Images must come first,
	# because ![foo][f] looks like an anchor.
	$text = _DoImages($text);
	$text = _DoAnchors($text);

	# Make links out of things like `<http://example.com/>`
	# Must come after _DoAnchors(), because you can use < and >
	# delimiters in inline links like [this](<url>).
	$text = _DoAutoLinks($text);
	$text = _EncodeAmpsAndAngles($text);
	$text = _DoItalicsAndBold($text);

	# Do hard breaks:
	$text = preg_replace('/ {2,}\n/', "<br$md_empty_element_suffix\n", $text);

	return $text;
}


function _EscapeSpecialChars($text) {
	global $md_escape_table;
	$tokens = _TokenizeHTML($text);

	$text = '';   # rebuild $text from the tokens
#	$in_pre = 0;  # Keep track of when we're inside <pre> or <code> tags.
#	$tags_to_skip = "!<(/?)(?:pre|code|kbd|script|math)[\s>]!";

	foreach ($tokens as $cur_token) {
		if ($cur_token[0] == 'tag') {
			# Within tags, encode * and _ so they don't conflict
			# with their use in Markdown for italics and strong.
			# We're replacing each such character with its
			# corresponding MD5 checksum value; this is likely
			# overkill, but it should prevent us from colliding
			# with the escape values by accident.
			$cur_token[1] = str_replace(array('*', '_'),
				array($md_escape_table['*'], $md_escape_table['_']),
				$cur_token[1]);
			$text .= $cur_token[1];
		} else {
			$t = $cur_token[1];
			$t = _EncodeBackslashEscapes($t);
			$text .= $t;
		}
	}
	return $text;
}


function _DoAnchors($text) {
#
# Turn Markdown link shortcuts into XHTML <a> tags.
#
	global $md_nested_brackets;
	#
	# First, handle reference-style links: [link text] [id]
	#
	$text = preg_replace_callback("{
		(					# wrap whole match in $1
		  \\[
			($md_nested_brackets)	# link text = $2
		  \\]

		  [ ]?				# one optional space
		  (?:\\n[ ]*)?		# one optional newline followed by spaces

		  \\[
			(.*?)		# id = $3
		  \\]
		)
		}xs",
		'_DoAnchors_reference_callback', $text);

	#
	# Next, inline-style links: [link text](url "optional title")
	#
	$text = preg_replace_callback("{
		(				# wrap whole match in $1
		  \\[
			($md_nested_brackets)	# link text = $2
		  \\]
		  \\(			# literal paren
			[ \\t]*
			<?(.*?)>?	# href = $3
			[ \\t]*
			(			# $4
			  (['\"])	# quote char = $5
			  (.*?)		# Title = $6
			  \\5		# matching quote
			)?			# title is optional
		  \\)
		)
		}xs",
		'_DoAnchors_inline_callback', $text);

	return $text;
}
function _DoAnchors_reference_callback($matches) {
	global $md_urls, $md_titles, $md_escape_table;
	$whole_match = $matches[1];
	$link_text   = $matches[2];
	$link_id     = strtolower($matches[3]);

	if ($link_id == "") {
		$link_id = strtolower($link_text); # for shortcut links like [this][].
	}

	if (isset($md_urls[$link_id])) {
		$url = $md_urls[$link_id];
		# We've got to encode these to avoid conflicting with italics/bold.
		$url = str_replace(array('*', '_'),
						   array($md_escape_table['*'], $md_escape_table['_']),
						   $url);
		$result = "<a href=\"$url\"";
		if ( isset( $md_titles[$link_id] ) ) {
			$title = $md_titles[$link_id];
			$title = str_replace(array('*',     '_'),
								 array($md_escape_table['*'], 
									   $md_escape_table['_']), $title);
			$result .=  " title=\"$title\"";
		}
		$result .= ">$link_text</a>";
	}
	else {
		$result = $whole_match;
	}
	return $result;
}
function _DoAnchors_inline_callback($matches) {
	global $md_escape_table;
	$whole_match	= $matches[1];
	$link_text		= $matches[2];
	$url			= $matches[3];
	$title			=& $matches[6];

	# We've got to encode these to avoid conflicting with italics/bold.
	$url = str_replace(array('*', '_'),
					   array($md_escape_table['*'], $md_escape_table['_']), 
					   $url);
	$result = "<a href=\"$url\"";
	if (isset($title)) {
		$title = str_replace('"', '&quot;', $title);
		$title = str_replace(array('*', '_'),
							 array($md_escape_table['*'], $md_escape_table['_']),
							 $title);
		$result .=  " title=\"$title\"";
	}
	
	$result .= ">$link_text</a>";

	return $result;
}


function _DoImages($text) {
#
# Turn Markdown image shortcuts into <img> tags.
#
	global $md_nested_brackets;

	#
	# First, handle reference-style labeled images: ![alt text][id]
	#
	$text = preg_replace_callback('{
		(				# wrap whole match in $1
		  !\[
			('.$md_nested_brackets.')		# alt text = $2
		  \]

		  [ ]?				# one optional space
		  (?:\n[ ]*)?		# one optional newline followed by spaces

		  \[
			(.*?)		# id = $3
		  \]

		)
		}xs', 
		'_DoImages_reference_callback', $text);

	#
	# Next, handle inline images:  ![alt text](url "optional title")
	# Don't forget: encode * and _

	$text = preg_replace_callback('{
		(				# wrap whole match in $1
		  !\[
			('.$md_nested_brackets.')		# alt text = $2
		  \]
		  \(			# literal paren
			[ \t]*
			<?(\S+?)>?	# src url = $3
			[ \t]*
			(			# $4
			  ([\'"])	# quote char = $5
			  (.*?)		# title = $6
			  \5		# matching quote
			  [ \t]*
			)?			# title is optional
		  \)
		)
		}xs',
		'_DoImages_inline_callback', $text);

	return $text;
}
function _DoImages_reference_callback($matches) {
	global $md_urls, $md_titles, $md_empty_element_suffix, $md_escape_table;
	$whole_match = $matches[1];
	$alt_text    = $matches[2];
	$link_id     = strtolower($matches[3]);

	if ($link_id == "") {
		$link_id = strtolower($alt_text); # for shortcut links like ![this][].
	}

	$alt_text = str_replace('"', '&quot;', $alt_text);
	if (isset($md_urls[$link_id])) {
		$url = $md_urls[$link_id];
		# We've got to encode these to avoid conflicting with italics/bold.
		$url = str_replace(array('*', '_'),
						   array($md_escape_table['*'], $md_escape_table['_']),
						   $url);
		$result = "<img src=\"$url\" alt=\"$alt_text\"";
		if (isset($md_titles[$link_id])) {
			$title = $md_titles[$link_id];
			$title = str_replace(array('*', '_'),
								 array($md_escape_table['*'], 
									   $md_escape_table['_']), $title);
			$result .=  " title=\"$title\"";
		}
		$result .= $md_empty_element_suffix;
	}
	else {
		# If there's no such link ID, leave intact:
		$result = $whole_match;
	}

	return $result;
}
function _DoImages_inline_callback($matches) {
	global $md_empty_element_suffix, $md_escape_table;
	$whole_match	= $matches[1];
	$alt_text		= $matches[2];
	$url			= $matches[3];
	$title			= '';
	if (isset($matches[6])) {
		$title		= $matches[6];
	}

	$alt_text = str_replace('"', '&quot;', $alt_text);
	$title    = str_replace('"', '&quot;', $title);
	# We've got to encode these to avoid conflicting with italics/bold.
	$url = str_replace(array('*', '_'),
					   array($md_escape_table['*'], $md_escape_table['_']),
					   $url);
	$result = "<img src=\"$url\" alt=\"$alt_text\"";
	if (isset($title)) {
		$title = str_replace(array('*', '_'),
							 array($md_escape_table['*'], $md_escape_table['_']),
							 $title);
		$result .=  " title=\"$title\""; # $title already quoted
	}
	$result .= $md_empty_element_suffix;

	return $result;
}


function _DoHeaders($text) {
	# Setext-style headers:
	#	  Header 1
	#	  ========
	#  
	#	  Header 2
	#	  --------
	#
	$text = preg_replace(
		array('{ (^.+?) (?:[ ]+\{\#([-_:a-zA-Z0-9]+)\})? [ \t]*\n=+[ \t]*\n+ }emx',
			  '{ (^.+?) (?:[ ]+\{\#([-_:a-zA-Z0-9]+)\})? [ \t]*\n-+[ \t]*\n+ }emx'),
		array("_HashBlock('<h1'. ('\\2'? ' id=\"'._UnslashQuotes('\\2').'\"':'').
				'>'._RunSpanGamut(_UnslashQuotes('\\1')).'</h1>'
			  ) . '\n\n'",
			  "_HashBlock('<h2'. ('\\2'? ' id=\"'._UnslashQuotes('\\2').'\"':'').
				'>'._RunSpanGamut(_UnslashQuotes('\\1')).'</h2>'
			  ) . '\n\n'"),
		$text);

	# atx-style headers:
	#	# Header 1
	#	## Header 2
	#	## Header 2 with closing hashes ##
	#	...
	#	###### Header 6
	#
	$text = preg_replace('{
			^(\#{1,6})	# $1 = string of #\'s
			[ \t]*
			(.+?)		# $2 = Header text
			[ \t]*
			\#*			# optional closing #\'s (not counted)
			(?:[ ]+\{\#([-_:a-zA-Z0-9]+)\}[ ]*)? # id attribute
			\n+
		}xme',
		"_HashBlock(
			'<h'.strlen('\\1'). ('\\3'? ' id=\"'._UnslashQuotes('\\3').'\"':'').'>'.
			_RunSpanGamut(_UnslashQuotes('\\2')).
			'</h'.strlen('\\1').'>'
		) . '\n\n'",
		$text);

	return $text;
}


function _DoTables($text) {
#
# Form HTML tables.
#
	global $md_tab_width;
	$less_than_tab = $md_tab_width - 1;
	#
	# Find tables with leading pipe.
	#
	#	| Header 1 | Header 2
	#	| -------- | --------
	#	| Cell 1   | Cell 2
	#	| Cell 3   | Cell 4
	#
	$text = preg_replace_callback('
		{
			^							# Start of a line
			[ ]{0,'.$less_than_tab.'}	# Allowed whitespace.
			[|]							# Optional leading pipe (present)
			(.+) \n						# $1: Header row (at least one pipe)
			
			[ ]{0,'.$less_than_tab.'}	# Allowed whitespace.
			[|] ([ ]*[-:]+[-| :]*) \n	# $2: Header underline
			
			(							# $3: Cells
				(?:
					[ ]*				# Allowed whitespace.
					[|] .* \n			# Row content.
				)*
			)
			(?=\n|\Z)					# Stop at final double newline.
		}xm',
		'_DoTable_LeadingPipe_callback', $text);
	
	#
	# Find tables without leading pipe.
	#
	#	Header 1 | Header 2
	#	-------- | --------
	#	Cell 1   | Cell 2
	#	Cell 3   | Cell 4
	#
	$text = preg_replace_callback('
		{
			^							# Start of a line
			[ ]{0,'.$less_than_tab.'}	# Allowed whitespace.
			(\S.*[|].*) \n				# $1: Header row (at least one pipe)
			
			[ ]{0,'.$less_than_tab.'}	# Allowed whitespace.
			([-:]+[ ]*[|][-| :]*) \n	# $2: Header underline
			
			(							# $3: Cells
				(?:
					.* [|] .* \n		# Row content
				)*
			)
			(?=\n|\Z)					# Stop at final double newline.
		}xm',
		'_DoTable_callback', $text);

	return $text;
}
function _DoTable_LeadingPipe_callback($matches) {
	$head		= $matches[1];
	$underline	= $matches[2];
	$content	= $matches[3];
	
	# Remove leading pipe for each row.
	$content	= preg_replace('/^ *[|]/m', '', $content);
	
	return _DoTable_callback(array($matches[0], $head, $underline, $content));
}
function _DoTable_callback($matches) {
	$head		= $matches[1];
	$underline	= $matches[2];
	$content	= $matches[3];

	# Remove any tailing pipes for each line.
	$head		= preg_replace('/[|] *$/m', '', $head);
	$underline	= preg_replace('/[|] *$/m', '', $underline);
	$content	= preg_replace('/[|] *$/m', '', $content);
	
	# Reading alignement from header underline.
	$separators	= preg_split('/ *[|] */', $underline);
	foreach ($separators as $n => $s) {
		if (preg_match('/^ *-+: *$/', $s))		$attr[$n] = ' align="right"';
		else if (preg_match('/^ *:-+: *$/', $s))$attr[$n] = ' align="center"';
		else if (preg_match('/^ *:-+ *$/', $s))	$attr[$n] = ' align="left"';
		else									$attr[$n] = '';
	}
	
	# Creating code spans before splitting the row is an easy way to 
	# handle a code span containg pipes.
	$head	= _DoCodeSpans($head);
	$headers	= preg_split('/ *[|] */', $head);
	$col_count	= count($headers);
	
	# Write column headers.
	$text = "<table>\n";
	$text .= "<thead>\n";
	$text .= "<tr>\n";
	foreach ($headers as $n => $header)
		$text .= "  <th$attr[$n]>"._RunSpanGamut(trim($header))."</th>\n";
	$text .= "</tr>\n";
	$text .= "</thead>\n";
	
	# Split content by row.
	$rows = explode("\n", trim($content, "\n"));
	
	$text .= "<tbody>\n";
	foreach ($rows as $row) {
		# Creating code spans before splitting the row is an easy way to 
		# handle a code span containg pipes.
		$row = _DoCodeSpans($row);
		
		# Split row by cell.
		$row_cells = preg_split('/ *[|] */', $row, $col_count);
		$row_cells = array_pad($row_cells, $col_count, '');
		
		$text .= "<tr>\n";
		foreach ($row_cells as $n => $cell)
			$text .= "  <td$attr[$n]>"._RunSpanGamut(trim($cell))."</td>\n";
		$text .= "</tr>\n";
	}
	$text .= "</tbody>\n";
	$text .= "</table>";
	
	return _HashBlock($text) . "\n";
}


function _DoLists($text) {
#
# Form HTML ordered (numbered) and unordered (bulleted) lists.
#
	global $md_tab_width, $md_list_level;
	$less_than_tab = $md_tab_width - 1;

	# Re-usable patterns to match list item bullets and number markers:
	$marker_ul  = '[*+-]';
	$marker_ol  = '\d+[.]';
	$marker_any = "(?:$marker_ul|$marker_ol)";

	$markers = array($marker_ul, $marker_ol);

	foreach ($markers as $marker) {
		# Re-usable pattern to match any entirel ul or ol list:
		$whole_list = '
			(								# $1 = whole list
			  (								# $2
				[ ]{0,'.$less_than_tab.'}
				('.$marker.')				# $3 = first list item marker
				[ \t]+
			  )
			  (?s:.+?)
			  (								# $4
				  \z
				|
				  \n{2,}
				  (?=\S)
				  (?!						# Negative lookahead for another list item marker
					[ \t]*
					'.$marker.'[ \t]+
				  )
			  )
			)
		'; // mx
		
		# We use a different prefix before nested lists than top-level lists.
		# See extended comment in _ProcessListItems().
	
		if ($md_list_level) {
			$text = preg_replace_callback('{
					^
					'.$whole_list.'
				}mx',
				'_DoLists_callback', $text);
		}
		else {
			$text = preg_replace_callback('{
					(?:(?<=\n\n)|\A\n?)
					'.$whole_list.'
				}mx',
				'_DoLists_callback', $text);
		}
	}

	return $text;
}
function _DoLists_callback($matches) {
	# Re-usable patterns to match list item bullets and number markers:
	$marker_ul  = '[*+-]';
	$marker_ol  = '\d+[.]';
	$marker_any = "(?:$marker_ul|$marker_ol)";
	
	$list = $matches[1];
	$list_type = preg_match("/$marker_ul/", $matches[3]) ? "ul" : "ol";
	
	$marker_any = ( $list_type == "ul" ? $marker_ul : $marker_ol );
	
	# Turn double returns into triple returns, so that we can make a
	# paragraph for the last item in a list, if necessary:
	$list = preg_replace("/\n{2,}/", "\n\n\n", $list);
	$result = _ProcessListItems($list, $marker_any);
	$result = "<$list_type>\n" . $result . "</$list_type>";
	return "\n" . _HashBlock($result) . "\n\n";
}


function _ProcessListItems($list_str, $marker_any) {
#
#	Process the contents of a single ordered or unordered list, splitting it
#	into individual list items.
#
	global $md_list_level;
	
	# The $md_list_level global keeps track of when we're inside a list.
	# Each time we enter a list, we increment it; when we leave a list,
	# we decrement. If it's zero, we're not in a list anymore.
	#
	# We do this because when we're not inside a list, we want to treat
	# something like this:
	#
	#		I recommend upgrading to version
	#		8. Oops, now this line is treated
	#		as a sub-list.
	#
	# As a single paragraph, despite the fact that the second line starts
	# with a digit-period-space sequence.
	#
	# Whereas when we're inside a list (or sub-list), that line will be
	# treated as the start of a sub-list. What a kludge, huh? This is
	# an aspect of Markdown's syntax that's hard to parse perfectly
	# without resorting to mind-reading. Perhaps the solution is to
	# change the syntax rules such that sub-lists must start with a
	# starting cardinal number; e.g. "1." or "a.".
	
	$md_list_level++;

	# trim trailing blank lines:
	$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);

	$list_str = preg_replace_callback('{
		(\n)?							# leading line = $1
		(^[ \t]*)						# leading whitespace = $2
		('.$marker_any.') [ \t]+		# list marker = $3
		((?s:.+?)						# list item text   = $4
		(\n{1,2}))
		(?= \n* (\z | \2 ('.$marker_any.') [ \t]+))
		}xm',
		'_ProcessListItems_callback', $list_str);

	$md_list_level--;
	return $list_str;
}
function _ProcessListItems_callback($matches) {
	$item = $matches[4];
	$leading_line =& $matches[1];
	$leading_space =& $matches[2];

	if ($leading_line || preg_match('/\n{2,}/', $item)) {
		$item = _RunBlockGamut(_Outdent($item));
	}
	else {
		# Recursion for sub-lists:
		$item = _DoLists(_Outdent($item));
		$item = preg_replace('/\n+$/', '', $item);
		$item = _RunSpanGamut($item);
	}

	return "<li>" . $item . "</li>\n";
}


function _DoDefLists($text) {
#
# Form HTML definition lists.
#
	global $md_tab_width;
	$less_than_tab = $md_tab_width - 1;

	# Re-usable patterns to match list item bullets and number markers:

	# Re-usable pattern to match any entire dl list:
	$whole_list = '
		(								# $1 = whole list
		  (								# $2
			[ ]{0,'.$less_than_tab.'}
			((?>.*\S.*\n)+)				# $3 = defined term
			\n?
			[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
		  )
		  (?s:.+?)
		  (								# $4
			  \z
			|
			  \n{2,}
			  (?=\S)
			  (?!						# Negative lookahead for another term
				[ ]{0,'.$less_than_tab.'}
				(?: \S.*\n )+?			# defined term
				\n?
				[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
			  )
			  (?!						# Negative lookahead for another definition
				[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
			  )
		  )
		)
	'; // mx

	$text = preg_replace_callback('{
			(?:(?<=\n\n)|\A\n?)
			'.$whole_list.'
		}mx',
		'_DoDefLists_callback', $text);

	return $text;
}
function _DoDefLists_callback($matches) {
	# Re-usable patterns to match list item bullets and number markers:
	$list = $matches[1];
	
	# Turn double returns into triple returns, so that we can make a
	# paragraph for the last item in a list, if necessary:
	$result = trim(_ProcessDefListItems($list));
	$result = "<dl>\n" . $result . "\n</dl>";
	return _HashBlock($result) . "\n\n";
}


function _ProcessDefListItems($list_str) {
#
#	Process the contents of a single ordered or unordered list, splitting it
#	into individual list items.
#
	global $md_tab_width;
	$less_than_tab = $md_tab_width - 1;
	
	# trim trailing blank lines:
	$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);

	# Process definition terms.
	$list_str = preg_replace_callback('{
		(?:\n\n+|\A\n?)					# leading line
		(								# definition terms = $1
			[ ]{0,'.$less_than_tab.'}	# leading whitespace
			(?![:][ ]|[ ])				# negative lookahead for a definition 
										#   mark (colon) or more whitespace.
			(?: \S.* \n)+?				# actual term (not whitespace).	
		)			
		(?=\n?[ ]{0,3}:[ ])				# lookahead for following line feed 
										#   with a definition mark.
		}xm',
		'_ProcessDefListItems_callback_dt', $list_str);

	# Process actual definitions.
	$list_str = preg_replace_callback('{
		\n(\n+)?						# leading line = $1
		[ ]{0,'.$less_than_tab.'}		# whitespace before colon
		[:][ ]+							# definition mark (colon)
		((?s:.+?))						# definition text = $2
		(?= \n+ 						# stop at next definition mark,
			(?:							# next term or end of text
				[ ]{0,'.$less_than_tab.'} [:][ ]	|
				<dt> | \z
			)						
		)					
		}xm',
		'_ProcessDefListItems_callback_dd', $list_str);

	return $list_str;
}
function _ProcessDefListItems_callback_dt($matches) {
	$terms = explode("\n", trim($matches[1]));
	$text = '';
	foreach ($terms as $term) {
		$term = _RunSpanGamut(trim($term));
		$text .= "\n<dt>" . $term . "</dt>";
	}
	return $text . "\n";
}
function _ProcessDefListItems_callback_dd($matches) {
	$leading_line	= $matches[1];
	$def			= $matches[2];

	if ($leading_line || preg_match('/\n{2,}/', $def)) {
		$def = _RunBlockGamut(_Outdent($def . "\n\n"));
		$def = "\n". $def ."\n";
	}
	else {
		$def = rtrim($def);
		$def = _RunSpanGamut(_Outdent($def));
	}

	return "\n<dd>" . $def . "</dd>\n";
}


function _DoCodeBlocks($text) {
#
#	Process Markdown `<pre><code>` blocks.
#
	global $md_tab_width;
	$text = preg_replace_callback('{
			(?:\n\n|\A)
			(	            # $1 = the code block -- one or more lines, starting with a space/tab
			  (?:
				(?:[ ]{'.$md_tab_width.'} | \t)  # Lines must start with a tab or a tab-width of spaces
				.*\n+
			  )+
			)
			((?=^[ ]{0,'.$md_tab_width.'}\S)|\Z)	# Lookahead for non-space at line-start, or end of doc
		}xm',
		'_DoCodeBlocks_callback', $text);

	return $text;
}
function _DoCodeBlocks_callback($matches) {
	$codeblock = $matches[1];

	$codeblock = _EncodeCode(_Outdent($codeblock));
//	$codeblock = _Detab($codeblock);
	# trim leading newlines and trailing whitespace
	$codeblock = preg_replace(array('/\A\n+/', '/\s+\z/'), '', $codeblock);

	$result = "<pre><code>" . $codeblock . "\n</code></pre>";

	return "\n\n" . _HashBlock($result) . "\n\n";
}


function _DoCodeSpans($text) {
#
# 	*	Backtick quotes are used for <code></code> spans.
#
# 	*	You can use multiple backticks as the delimiters if you want to
# 		include literal backticks in the code span. So, this input:
#
#		  Just type ``foo `bar` baz`` at the prompt.
#
#	  	Will translate to:
#
#		  <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
#
#		There's no arbitrary limit to the number of backticks you
#		can use as delimters. If you need three consecutive backticks
#		in your code, use four for delimiters, etc.
#
#	*	You can use spaces to get literal backticks at the edges:
#
#		  ... type `` `bar` `` ...
#
#	  	Turns to:
#
#		  ... type <code>`bar`</code> ...
#
	$text = preg_replace_callback('@
			(?<!\\\)	# Character before opening ` can\'t be a backslash
			(`+)		# $1 = Opening run of `
			(.+?)		# $2 = The code block
			(?<!`)
			\1			# Matching closer
			(?!`)
		@xs',
		'_DoCodeSpans_callback', $text);

	return $text;
}
function _DoCodeSpans_callback($matches) {
	$c = $matches[2];
	$c = preg_replace('/^[ \t]*/', '', $c); # leading whitespace
	$c = preg_replace('/[ \t]*$/', '', $c); # trailing whitespace
	$c = _EncodeCode($c);
	return "<code>$c</code>";
}


function _EncodeCode($_) {
#
# Encode/escape certain characters inside Markdown code runs.
# The point is that in code, these characters are literals,
# and lose their special Markdown meanings.
#
	global $md_escape_table;

	# Encode all ampersands; HTML entities are not
	# entities within a Markdown code span.
	$_ = str_replace('&', '&amp;', $_);

	# Do the angle bracket song and dance:
	$_ = str_replace(array('<',    '>'), 
					 array('&lt;', '&gt;'), $_);

	# Now, escape characters that are magic in Markdown:
	$_ = str_replace(array_keys($md_escape_table), 
					 array_values($md_escape_table), $_);

	return $_;
}


function _DoItalicsAndBold($text) {
	# <strong> must go first:
	$text = preg_replace(array(
		'{
			( (?<!\w) __ )			# $1: Marker (not preceded by alphanum)
			(?=\S) 					# Not followed by whitespace 
			(?!__)					#   or two others marker chars.
			(						# $2: Content
				(?>
					[^_]+?			# Anthing not em markers.
				|
									# Balence any regular _ emphasis inside.
					(?<![a-zA-Z0-9])_ (?=\S) (?! _) (.+?) 
					(?<=\S) _ (?![a-zA-Z0-9])
				)+?
			)
			(?<=\S) __				# End mark not preceded by whitespace.
			(?!\w)					# Not followed by alphanum.
		}sx',
		'{
			( (?<!\*\*) \*\* )		# $1: Marker (not preceded by two *)
			(?=\S) 					# Not followed by whitespace 
			(?!\1)					#   or two others marker chars.
			(						# $2: Content
				(?>
					[^*]+?			# Anthing not em markers.
				|
									# Balence any regular * emphasis inside.
					\* (?=\S) (?! \*) (.+?) (?<=\S) \*
				)+?
			)
			(?<=\S) \*\*			# End mark not preceded by whitespace.
		}sx',
		),
		'<strong>\2</strong>', $text);
	# Then <em>:
	$text = preg_replace(array(
		'{ ( (?<!\w) _ ) (?=\S) (?! _)  (.+?) (?<=\S) _ (?!\w) }sx',
		'{ ( (?<!\*)\* ) (?=\S) (?! \*) (.+?) (?<=\S) \* }sx',
		),
		'<em>\2</em>', $text);

	return $text;
}


function _DoBlockQuotes($text) {
	$text = preg_replace_callback('/
		  (								# Wrap whole match in $1
			(
			  ^[ \t]*>[ \t]?			# ">" at the start of a line
				.+\n					# rest of the first line
			  (.+\n)*					# subsequent consecutive lines
			  \n*						# blanks
			)+
		  )
		/xm',
		'_DoBlockQuotes_callback', $text);

	return $text;
}
function _DoBlockQuotes_callback($matches) {
	$bq = $matches[1];
	# trim one level of quoting - trim whitespace-only lines
	$bq = preg_replace(array('/^[ \t]*>[ \t]?/m', '/^[ \t]+$/m'), '', $bq);
	$bq = _RunBlockGamut($bq);		# recurse

	$bq = preg_replace('/^/m', "  ", $bq);
	# These leading spaces screw with <pre> content, so we need to fix that:
	$bq = preg_replace_callback('{(\s*<pre>.+?</pre>)}sx', 
								'_DoBlockQuotes_callback2', $bq);

	return _HashBlock("<blockquote>\n$bq\n</blockquote>") . "\n\n";
}
function _DoBlockQuotes_callback2($matches) {
	$pre = $matches[1];
	$pre = preg_replace('/^  /m', '', $pre);
	return $pre;
}


function _FormParagraphs($text) {
#
#	Params:
#		$text - string to process with html <p> tags
#
	global $md_html_blocks, $md_html_hashes;

	# Strip leading and trailing lines:
	$text = preg_replace(array('/\A\n+/', '/\n+\z/'), '', $text);
	
	$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);

	#
	# Wrap <p> tags and unhashify HTML blocks
	#
	foreach ($grafs as $key => $value) {
		$value = trim(_RunSpanGamut($value));
		
		# Check if this should be enclosed in a paragraph.
		# Text equaling to a clean tag hash are not enclosed.
		# Text starting with a block tag hash are not either.
		$clean_key = $value;
		$block_key = substr($value, 0, 32);
		
		$is_p = (!isset($md_html_blocks[$block_key]) && 
				 !isset($md_html_hashes[$clean_key]));
		
		if ($is_p) {
			$value = "<p>$value</p>";
		}
		$grafs[$key] = $value;
	}
	
	# Join grafs in one text, then unhash HTML tags. 
	$text = implode("\n\n", $grafs);
	
	# Finish by removing any tag hashes still present in $text.
	$text = _UnhashTags($text);
	
	return $text;
}


function _EncodeAmpsAndAngles($text) {
# Smart processing for ampersands and angle brackets that need to be encoded.

	# Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
	#   http://bumppo.net/projects/amputator/
	$text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/', 
						 '&amp;', $text);;

	# Encode naked <'s
	$text = preg_replace('{<(?![a-z/?\$!])}i', '&lt;', $text);

	return $text;
}


function _EncodeBackslashEscapes($text) {
#
#	Parameter:  String.
#	Returns:    The string, with after processing the following backslash
#				escape sequences.
#
	global $md_escape_table, $md_backslash_escape_table;
	# Must process escaped backslashes first.
	return str_replace(array_keys($md_backslash_escape_table),
					   array_values($md_backslash_escape_table), $text);
}


function _DoAutoLinks($text) {
	$text = preg_replace("!<((https?|ftp):[^'\">\\s]+)>!", 
						 '<a href="\1">\1</a>', $text);

	# Email addresses: <address@domain.foo>
	$text = preg_replace('{
		<
        (?:mailto:)?
		(
			[-.\w]+
			\@
			[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
		)
		>
		}exi',
		"_EncodeEmailAddress(_UnescapeSpecialChars(_UnslashQuotes('\\1')))",
		$text);

	return $text;
}


function _EncodeEmailAddress($addr) {
#
#	Input: an email address, e.g. "foo@example.com"
#
#	Output: the email address as a mailto link, with each character
#		of the address encoded as either a decimal or hex entity, in
#		the hopes of foiling most address harvesting spam bots. E.g.:
#
#	  <a href="&#x6D;&#97;&#105;&#108;&#x74;&#111;:&#102;&#111;&#111;&#64;&#101;
#		x&#x61;&#109;&#x70;&#108;&#x65;&#x2E;&#99;&#111;&#109;">&#102;&#111;&#111;
#		&#64;&#101;x&#x61;&#109;&#x70;&#108;&#x65;&#x2E;&#99;&#111;&#109;</a>
#
#	Based by a filter by Matthew Wickline, posted to the BBEdit-Talk
#	mailing list: <http://tinyurl.com/yu7ue>
#
	$addr = "mailto:" . $addr;
	$length = strlen($addr);

	# leave ':' alone (to spot mailto: later)
	$addr = preg_replace_callback('/([^\:])/', 
								  '_EncodeEmailAddress_callback', $addr);

	$addr = "<a href=\"$addr\">$addr</a>";
	# strip the mailto: from the visible part
	$addr = preg_replace('/">.+?:/', '">', $addr);

	return $addr;
}
function _EncodeEmailAddress_callback($matches) {
	$char = $matches[1];
	$r = rand(0, 100);
	# roughly 10% raw, 45% hex, 45% dec
	# '@' *must* be encoded. I insist.
	if ($r > 90 && $char != '@') return $char;
	if ($r < 45) return '&#x'.dechex(ord($char)).';';
	return '&#'.ord($char).';';
}


function _UnescapeSpecialChars($text) {
#
# Swap back in all the special characters we've hidden.
#
	global $md_escape_table;
	return str_replace(array_values($md_escape_table), 
					   array_keys($md_escape_table), $text);
}


function _UnhashTags($text) {
#
# Swap back in all the tags hashed by _HashHTMLBlocks.
#
	global $md_html_hashes;
	return str_replace(array_keys($md_html_hashes), 
					   array_values($md_html_hashes), $text);
}


# _TokenizeHTML is shared between PHP Markdown and PHP SmartyPants.
# We only define it if it is not already defined.
if (!function_exists('_TokenizeHTML')) :
function _TokenizeHTML($str) {
#
#   Parameter:  String containing HTML markup.
#   Returns:    An array of the tokens comprising the input
#               string. Each token is either a tag (possibly with nested,
#               tags contained therein, such as <a href="<MTFoo>">, or a
#               run of text between tags. Each element of the array is a
#               two-element array; the first is either 'tag' or 'text';
#               the second is the actual value.
#
#
#   Regular expression derived from the _tokenize() subroutine in 
#   Brad Choate's MTRegex plugin.
#   <http://www.bradchoate.com/past/mtregex.php>
#
	$index = 0;
	$tokens = array();

	$match = '(?s:<!(?:--.*?--\s*)+>)|'.	# comment
			 '(?s:<\?.*?\?>)|'.				# processing instruction
			 								# regular tags
			 '(?:<[/!$]?[-a-zA-Z0-9:]+\b(?>[^"\'>]+|"[^"]*"|\'[^\']*\')*>)'; 

	$parts = preg_split("{($match)}", $str, -1, PREG_SPLIT_DELIM_CAPTURE);

	foreach ($parts as $part) {
		if (++$index % 2 && $part != '') 
			$tokens[] = array('text', $part);
		else
			$tokens[] = array('tag', $part);
	}

	return $tokens;
}
endif;


function _Outdent($text) {
#
# Remove one level of line-leading tabs or spaces
#
	global $md_tab_width;
	return preg_replace("/^(\\t|[ ]{1,$md_tab_width})/m", "", $text);
}


function _Detab($text) {
#
# Replace tabs with the appropriate amount of space.
#
	global $md_tab_width;

	# For each line we separate the line in blocks delemited by
	# tab characters. Then we reconstruct every line by adding the 
	# appropriate number of space between each blocks.
	
	$lines = explode("\n", $text);
	$text = "";
	
	foreach ($lines as $line) {
		# Split in blocks.
		$blocks = explode("\t", $line);
		# Add each blocks to the line.
		$line = $blocks[0];
		unset($blocks[0]); # Do not add first block twice.
		foreach ($blocks as $block) {
			# Calculate amount of space, insert spaces, insert block.
			$amount = $md_tab_width - strlen($line) % $md_tab_width;
			$line .= str_repeat(" ", $amount) . $block;
		}
		$text .= "$line\n";
	}
	return $text;
}


function _UnslashQuotes($text) {
#
#	This function is useful to remove automaticaly slashed double quotes
#	when using preg_replace and evaluating an expression.
#	Parameter:  String.
#	Returns:    The string with any slash-double-quote (\") sequence replaced
#				by a single double quote.
#
	return str_replace('\"', '"', $text);
}


/*

PHP Markdown Extra
==================

Description
-----------

This is a PHP translation of the original Markdown formatter written in
Perl by John Gruber. This special version of PHP Markdown also include 
syntax additions by myself.

Markdown is a text-to-HTML filter; it translates an easy-to-read /
easy-to-write structured text format into HTML. Markdown's text format
is most similar to that of plain text email, and supports features such
as headers, *emphasis*, code blocks, blockquotes, and links.

Markdown's syntax is designed not as a generic markup language, but
specifically to serve as a front-end to (X)HTML. You can use span-level
HTML tags anywhere in a Markdown document, and you can use block level
HTML tags (like <div> and <table> as well).

For more information about Markdown's syntax, see:

<http://daringfireball.net/projects/markdown/>


Bugs
----

To file bug reports please send email to:

<michel.fortin@michelf.com>

Please include with your report: (1) the example input; (2) the output you
expected; (3) the output Markdown actually produced.


Version History
--------------- 

See Readme file for details.

Extra 1.0.1 - 9 December 2005

Extra 1.0 - 5 September 2005

Extra 1.0b4 - 1 August 2005

Extra 1.0b3 - 29 July 2005

Extra 1.0b2 - 26 July 2005

Extra 1.0b1 - 25 July 2005


Author & Contributors
---------------------

Original Markdown in Perl by John Gruber  
<http://daringfireball.net/>

PHP port and extras by Michel Fortin  
<http://www.michelf.com/>


Copyright and License
---------------------

Copyright (c) 2004-2005 Michel Fortin  
<http://www.michelf.com/>  
All rights reserved.

Based on Markdown  
Copyright (c) 2003-2004 John Gruber   
<http://daringfireball.net/>   
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

*	Redistributions of source code must retain the above copyright notice,
	this list of conditions and the following disclaimer.

*	Redistributions in binary form must reproduce the above copyright
	notice, this list of conditions and the following disclaimer in the
	documentation and/or other materials provided with the distribution.

*	Neither the name "Markdown" nor the names of its contributors may
	be used to endorse or promote products derived from this software
	without specific prior written permission.

This software is provided by the copyright holders and contributors "as
is" and any express or implied warranties, including, but not limited
to, the implied warranties of merchantability and fitness for a
particular purpose are disclaimed. In no event shall the copyright owner
or contributors be liable for any direct, indirect, incidental, special,
exemplary, or consequential damages (including, but not limited to,
procurement of substitute goods or services; loss of use, data, or
profits; or business interruption) however caused and on any theory of
liability, whether in contract, strict liability, or tort (including
negligence or otherwise) arising in any way out of the use of this
software, even if advised of the possibility of such damage.

*/
?>
Back to Top