all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob b05100ce58e4a4fbb7bced1956d664b81a8d8629 74125 bytes (raw)
name: lisp/ob.el 	 # note: path name is non-authoritative(*)

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
 
;;; ob.el --- working with code blocks in org-mode

;; Copyright (C) 2009, 2010  Free Software Foundation, Inc.

;; Author: Eric Schulte, Dan Davison
;; Keywords: literate programming, reproducible research
;; Homepage: http://orgmode.org
;; Version: 7.01trans

;; This file is part of GNU Emacs.

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

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

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

;;; Commentary:

;; See the online documentation for more information
;;
;;   http://orgmode.org/worg/org-contrib/babel/

;;; Code:
(eval-when-compile
  (require 'cl))
(require 'org-macs)

(defvar org-babel-call-process-region-original)
(declare-function show-all "outline" ())
(declare-function tramp-compat-make-temp-file "tramp-compat"
                  (filename &optional dir-flag))
(declare-function tramp-dissect-file-name "tramp" (name &optional nodefault))
(declare-function tramp-file-name-user "tramp" (vec))
(declare-function tramp-file-name-host "tramp" (vec))
(declare-function with-parsed-tramp-file-name "tramp" (filename var &rest body))
(declare-function org-icompleting-read "org" (&rest args))
(declare-function org-edit-src-code "org-src" 
                  (&optional context code edit-buffer-name quietp))
(declare-function org-edit-src-exit "org-src"  (&optional context))
(declare-function org-open-at-point "org" (&optional in-emacs reference-buffer))
(declare-function org-save-outline-visibility "org" (use-markers &rest body))
(declare-function org-outline-overlay-data "org" (&optional use-markers))
(declare-function org-set-outline-overlay-data "org" (data))
(declare-function org-narrow-to-subtree "org" ())
(declare-function org-entry-get "org" (pom property &optional inherit literal-nil))
(declare-function org-make-options-regexp "org" (kwds &optional extra))
(declare-function org-do-remove-indentation "org" (&optional n))
(declare-function org-show-context "org" (&optional key))
(declare-function org-at-table-p "org" (&optional table-type))
(declare-function org-cycle "org" (&optional arg))
(declare-function org-uniquify "org" (list))
(declare-function org-current-level "org" ())
(declare-function org-table-import "org-table" (file arg))
(declare-function org-add-hook "org-compat" (hook function &optional append local))
(declare-function org-table-align "org-table" ())
(declare-function org-table-end "org-table" (&optional table-type))
(declare-function orgtbl-to-generic "org-table" (table params))
(declare-function orgtbl-to-orgtbl "org-table" (table params))
(declare-function org-babel-lob-get-info "ob-lob" nil)
(declare-function org-babel-ref-split-args "ob-ref" (arg-string))
(declare-function org-babel-ref-variables "ob-ref" (params))
(declare-function org-babel-ref-resolve-reference "ob-ref" (ref &optional params))
(declare-function org-babel-lob-execute-maybe "ob-lob" ())

(defgroup org-babel nil
  "Code block evaluation and management in `org-mode' documents."
  :tag "Babel"
  :group 'org)

(defcustom org-confirm-babel-evaluate t
  "Confirm before evaluation.
Require confirmation before interactively evaluating code
blocks in Org-mode buffers.  The default value of this variable
is t, meaning confirmation is required for any code block
evaluation.  This variable can be set to nil to inhibit any
future confirmation requests.  This variable can also be set to a
function which takes two arguments the language of the code block
and the body of the code block.  Such a function should then
return a non-nil value if the user should be prompted for
execution or nil if no prompt is required.

Warning: Disabling confirmation may result in accidental
evaluation of potentially harmful code.  It may be advisable
remove code block execution from C-c C-c as further protection
against accidental code block evaluation.  The
`org-babel-no-eval-on-ctrl-c-ctrl-c' variable can be used to
remove code block execution from the C-c C-c keybinding."
    :group 'org-babel
    :type '(choice boolean function))
;; don't allow this variable to be changed through file settings
(put 'org-confirm-babel-evaluate 'safe-local-variable (lambda (x) (eq x t)))

(defcustom org-babel-no-eval-on-ctrl-c-ctrl-c nil
  "Remove code block evaluation from the C-c C-c key binding."
  :group 'org-babel
  :type 'boolean)

(defvar org-babel-src-name-regexp
  "^[ \t]*#\\+\\(srcname\\|source\\|function\\):[ \t]*"
  "Regular expression used to match a source name line.")

(defvar org-babel-src-name-w-name-regexp
  (concat org-babel-src-name-regexp
	  "\\([^ ()\f\t\n\r\v]+\\)\\(\(\\(.*\\)\)\\|\\)")
  "Regular expression matching source name lines with a name.")

(defvar org-babel-src-block-regexp
  (concat
   ;; (1) indentation                     (2) lang
   "^\\([ \t]*\\)#\\+begin_src[ \t]+\\([^ \f\t\n\r\v]+\\)[ \t]*"
   ;; (3) switches
   "\\([^\":\n]*\"[^\"\n*]*\"[^\":\n]*\\|[^\":\n]*\\)"
   ;; (4) header arguments
   "\\([^\n]*\\)\n"
   ;; (5) body
   "\\([^\000]+?\n\\)[ \t]*#\\+end_src")
  "Regexp used to identify code blocks.")

(defvar org-babel-inline-src-block-regexp
  (concat
   ;; (1) replacement target (2) lang
   "[ \f\t\n\r\v]\\(src_\\([^ \f\t\n\r\v]+\\)"
   ;; (3,4) (unused, headers)
   "\\(\\|\\[\\(.*?\\)\\]\\)"
   ;; (5) body
   "{\\([^\f\n\r\v]+?\\)}\\)")
  "Regexp used to identify inline src-blocks.")

(defun org-babel-get-src-block-info ()
  "Get information on the current source block.

Returns a list
 (language body header-arguments-alist switches name function-args indent)."
  (let ((case-fold-search t) head info name args indent)
    (if (setq head (org-babel-where-is-src-block-head))
        (save-excursion
	  (goto-char head)
	  (setq info (org-babel-parse-src-block-match))
	  (setq indent (car (last info)))
	  (setq info (butlast info))
	  (forward-line -1)
	  (when (and (looking-at org-babel-src-name-w-name-regexp)
		     (setq name (match-string 2)))
	    (setq name (org-babel-clean-text-properties name))
	    (when (setq args (match-string 4))
	      (setq args (mapcar
			  (lambda (ref) (cons :var ref))
			  (org-babel-ref-split-args args)))
	      (setf (nth 2 info)
		    (org-babel-merge-params args (nth 2 info)))))
	  (append info (list name args indent)))
      (if (save-excursion ;; inline source block
            (re-search-backward "[ \f\t\n\r\v]" nil t)
            (looking-at org-babel-inline-src-block-regexp))
          (org-babel-parse-inline-src-block-match)
        nil))))

(defun org-babel-confirm-evaluate (info)
  "Confirm evaluation of the code block INFO.
This behavior can be suppressed by setting the value of
`org-confirm-babel-evaluate' to nil, in which case all future
interactive code block evaluations will proceed without any
confirmation from the user.

Note disabling confirmation may result in accidental evaluation
of potentially harmful code."
  (let* ((eval (or (cdr (assoc :eval (nth 2 info)))
		   (when (assoc :noeval (nth 2 info)) "no")))
	 (query (or (equal eval "query")
		    (if (functionp org-confirm-babel-evaluate)
			(funcall org-confirm-babel-evaluate
				 (nth 0 info) (nth 1 info))
		      org-confirm-babel-evaluate))))
    (if (or (equal eval "never") (equal eval "no")
	    (and query
		 (not (yes-or-no-p
		       (format "Evaluate this%scode on your system? "
			       (if info (format " %s " (nth 0 info)) " "))))))
	(prog1 nil (message "evaluation aborted"))
      t)))

;;;###autoload
(defun org-babel-execute-safely-maybe ()
  (unless org-babel-no-eval-on-ctrl-c-ctrl-c
    (org-babel-execute-maybe)))

(add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-execute-safely-maybe)

;;;###autoload
(defun org-babel-execute-maybe ()
  (interactive)
  (or (org-babel-execute-src-block-maybe)
      (org-babel-lob-execute-maybe)))

(defun org-babel-execute-src-block-maybe ()
  "Conditionally execute a source block.
Detect if this is context for a Babel src-block and if so
then run `org-babel-execute-src-block'."
  (interactive)
  (let ((info (org-babel-get-src-block-info)))
    (if info
	(progn (org-babel-execute-src-block current-prefix-arg info) t) nil)))

;;;###autoload
(defun org-babel-expand-src-block-maybe ()
  "Conditionally expand a source block.
Detect if this is context for a org-babel src-block and if so
then run `org-babel-expand-src-block'."
  (interactive)
  (let ((info (org-babel-get-src-block-info)))
    (if info
	(progn (org-babel-expand-src-block current-prefix-arg info) t)
      nil)))

;;;###autoload
(defun org-babel-load-in-session-maybe ()
  "Conditionally load a source block in a session.
Detect if this is context for a org-babel src-block and if so
then run `org-babel-load-in-session'."
  (interactive)
  (let ((info (org-babel-get-src-block-info)))
    (if info
	(progn (org-babel-load-in-session current-prefix-arg info) t)
      nil)))

(add-hook 'org-metaup-hook 'org-babel-load-in-session-maybe)

;;;###autoload
(defun org-babel-pop-to-session-maybe ()
  "Conditionally pop to a session.
Detect if this is context for a org-babel src-block and if so
then run `org-babel-pop-to-session'."
  (interactive)
  (let ((info (org-babel-get-src-block-info)))
    (if info (progn (org-babel-pop-to-session current-prefix-arg info) t) nil)))

(add-hook 'org-metadown-hook 'org-babel-pop-to-session-maybe)

(defconst org-babel-header-arg-names
  '(cache cmdline colnames dir exports file noweb results
    session tangle var eval noeval comments)
  "Common header arguments used by org-babel.
Note that individual languages may define their own language
specific header arguments as well.")

(defvar org-babel-default-header-args
  '((:session . "none") (:results . "replace") (:exports . "code")
    (:cache . "no") (:noweb . "no") (:hlines . "no") (:tangle . "no"))
  "Default arguments to use when evaluating a source block.")

(defvar org-babel-default-inline-header-args
  '((:session . "none") (:results . "silent") (:exports . "results"))
  "Default arguments to use when evaluating an inline source block.")

(defvar org-babel-current-buffer-properties)
(make-variable-buffer-local 'org-babel-current-buffer-properties)

(defvar org-babel-result-regexp
  "^[ \t]*#\\+res\\(ults\\|name\\)\\(\\[\\([[:alnum:]]+\\)\\]\\)?\\:[ \t]*"
  "Regular expression used to match result lines.
If the results are associated with a hash key then the hash will
be saved in the second match data.")

(defvar org-babel-result-w-name-regexp
  (concat org-babel-result-regexp
	  "\\([^ ()\f\t\n\r\v]+\\)\\(\(\\(.*\\)\)\\|\\)"))

(defvar org-babel-min-lines-for-block-output 10
  "The minimum number of lines for block output.
If number of lines of output is equal to or exceeds this
value, the output is placed in a #+begin_example...#+end_example
block. Otherwise the output is marked as literal by inserting
colons at the starts of the lines. This variable only takes
effect if the :results output option is in effect.")

(defvar org-babel-noweb-error-langs nil
  "Languages for which Babel will raise literate programming errors.
List of languages for which errors should be raised when the
source code block satisfying a noweb reference in this language
can not be resolved.")

(defvar org-babel-hash-show 4
  "Number of initial characters to show of a hidden results hash.")

(defvar org-babel-after-execute-hook nil
  "Hook for functions to be called after `org-babel-execute-src-block'")
(defun org-babel-named-src-block-regexp-for-name (name)
  "This generates a regexp used to match a src block named NAME."
  (concat org-babel-src-name-regexp (regexp-quote name) "[ \t\n]*"
	  (substring org-babel-src-block-regexp 1)))

;;; functions
(defvar call-process-region)
;;;###autoload

(defun org-babel-execute-src-block (&optional arg info params)
  "Execute the current source code block.
Insert the results of execution into the buffer.  Source code
execution and the collection and formatting of results can be
controlled through a variety of header arguments.

With prefix argument ARG, force re-execution even if a an
existing result cached in the buffer would otherwise have been
returned.

Optionally supply a value for INFO in the form returned by
`org-babel-get-src-block-info'.

Optionally supply a value for PARAMS which will be merged with
the header arguments specified at the front of the source code
block."
  (interactive)
  (let ((info (or info (org-babel-get-src-block-info))))
    (when (org-babel-confirm-evaluate info)
      (let* ((lang (nth 0 info))
	     (params (setf
		      (nth 2 info)
		      (sort (org-babel-merge-params (nth 2 info) params)
			    (lambda (el1 el2) (string< (symbol-name (car el1))
						  (symbol-name (car el2)))))))
	     (new-hash
	      (if (and (cdr (assoc :cache params))
		       (string= "yes" (cdr (assoc :cache params))))
		  (org-babel-sha1-hash info)))
	     (old-hash (org-babel-result-hash info))
	     (body (setf (nth 1 info)
			 (if (and (cdr (assoc :noweb params))
				  (string= "yes" (cdr (assoc :noweb params))))
			     (org-babel-expand-noweb-references info)
			   (nth 1 info))))
	     (result-params (split-string (or (cdr (assoc :results params)) "")))
	     (result-type (cond ((member "output" result-params) 'output)
				((member "value" result-params) 'value)
				(t 'value)))
	     (cmd (intern (concat "org-babel-execute:" lang)))
	     (dir (cdr (assoc :dir params)))
	     (default-directory
	       (or (and dir (file-name-as-directory dir)) default-directory))
	     (org-babel-call-process-region-original
	      (if (boundp 'org-babel-call-process-region-original)
		  org-babel-call-process-region-original
		(symbol-function 'call-process-region)))
	     (indent (car (last info)))
	     result)
	(unwind-protect
	    (flet ((call-process-region (&rest args)
		    (apply 'org-babel-tramp-handle-call-process-region args)))
	      (unless (fboundp cmd)
		(error "No org-babel-execute function for %s!" lang))
	      (if (and (not arg) new-hash (equal new-hash old-hash))
		  (save-excursion ;; return cached result
		    (goto-char (org-babel-where-is-src-block-result nil info))
		    (end-of-line 1) (forward-char 1)
		    (setq result (org-babel-read-result))
		    (message (replace-regexp-in-string
			      "%" "%%" (format "%S" result))) result)
		(message "executing %s code block%s..."
			 (capitalize lang)
			 (if (nth 4 info) (format " (%s)" (nth 4 info)) ""))
		(setq result (funcall cmd body params))
		(if (eq result-type 'value)
		    (setq result (if (and (or (member "vector" result-params)
					      (member "table" result-params))
					  (not (listp result)))
				     (list (list result))
				   result)))
		(org-babel-insert-result
		 result result-params info new-hash indent lang)
		(run-hooks 'org-babel-after-execute-hook)
		result))
	  (setq call-process-region 'org-babel-call-process-region-original))))))

(defun org-babel-expand-body:generic (body params &optional processed-params)
  "Expand BODY with PARAMS.
Expand a block of code with org-babel according to it's header
arguments.  This generic implementation of body expansion is
called for languages which have not defined their own specific
org-babel-expand-body:lang function." body)

;;;###autoload
(defun org-babel-expand-src-block (&optional arg info params)
  "Expand the current source code block.
Expand according to the source code block's header
arguments and pop open the results in a preview buffer."
  (interactive)
  (let* ((info (or info (org-babel-get-src-block-info)))
         (lang (nth 0 info))
	 (params (setf (nth 2 info)
                       (sort (org-babel-merge-params (nth 2 info) params)
                             (lambda (el1 el2) (string< (symbol-name (car el1))
                                                   (symbol-name (car el2)))))))
         (body (setf (nth 1 info)
		     (if (and (cdr (assoc :noweb params))
                              (string= "yes" (cdr (assoc :noweb params))))
			 (org-babel-expand-noweb-references info) (nth 1 info))))
         (cmd (intern (concat "org-babel-expand-body:" lang)))
         (expanded (funcall (if (fboundp cmd) cmd 'org-babel-expand-body:generic)
                            body params)))
    (org-edit-src-code
     nil expanded (concat "*Org-Babel Preview " (buffer-name) "[ " lang " ]*"))))

;;;###autoload
(defun org-babel-load-in-session (&optional arg info)
  "Load the body of the current source-code block.
Evaluate the header arguments for the source block before
entering the session.  After loading the body this pops open the
session."
  (interactive)
  (let* ((info (or info (org-babel-get-src-block-info)))
         (lang (nth 0 info))
         (params (nth 2 info))
         (body (setf (nth 1 info)
		     (if (and (cdr (assoc :noweb params))
                              (string= "yes" (cdr (assoc :noweb params))))
                         (org-babel-expand-noweb-references info)
		       (nth 1 info))))
         (session (cdr (assoc :session params)))
	 (dir (cdr (assoc :dir params)))
	 (default-directory
	   (or (and dir (file-name-as-directory dir)) default-directory))
	 (cmd (intern (concat "org-babel-load-session:" lang))))
    (unless (fboundp cmd)
      (error "No org-babel-load-session function for %s!" lang))
    (pop-to-buffer (funcall cmd session body params))
    (end-of-line 1)))

;;;###autoload
(defun org-babel-initiate-session (&optional arg info)
  "Initiate session for current code block.
If called with a prefix argument then evaluate the header arguments
for the code block before entering the session. Copy the body
of the code block to the kill ring."
  (interactive "P")
  (let* ((info (or info (org-babel-get-src-block-info)))
         (lang (nth 0 info))
         (body (nth 1 info))
         (params (nth 2 info))
         (session (cdr (assoc :session params)))
	 (dir (cdr (assoc :dir params)))
	 (default-directory
	   (or (and dir (file-name-as-directory dir)) default-directory))
	 (cmd (intern (format "org-babel-%s-initiate-session" lang)))
	 (cmd2 (intern (concat "org-babel-prep-session:" lang))))
    (if (and (stringp session) (string= session "none"))
	(error "This block is not using a session!"))
    (unless (fboundp cmd)
      (error "No org-babel-initiate-session function for %s!" lang))
    (with-temp-buffer (insert (org-babel-trim body))
                      (copy-region-as-kill (point-min) (point-max)))
    (when arg
      (unless (fboundp cmd2)
	(error "No org-babel-prep-session function for %s!" lang))
      (funcall cmd2 session params))
    (funcall cmd session params)))

;;;###autoload
(defun org-babel-switch-to-session (&optional arg info)
  "Switch to the session of the current code block.
Uses `org-babel-initiate-session' to start the session. If called
with a prefix argument then this is passed on to
`org-babel-initiate-session'."
  (interactive "P")
  (pop-to-buffer (org-babel-initiate-session arg info))
  (end-of-line 1))

(defalias 'org-babel-pop-to-session 'org-babel-switch-to-session)

;;;###autoload
(defun org-babel-switch-to-session-with-code (&optional arg info)
    "Switch to code buffer and display session."
    (interactive "P")
    (flet ((swap-windows
	    ()
	    (let ((other-window-buffer (window-buffer (next-window))))
	      (set-window-buffer (next-window) (current-buffer))
	      (set-window-buffer (selected-window) other-window-buffer))
	    (other-window 1)))
      (let ((info (org-babel-get-src-block-info))
	    (org-src-window-setup 'reorganize-frame))
	(save-excursion
	  (org-babel-switch-to-session arg info))
	(org-edit-src-code))
      (swap-windows)))

(defmacro org-babel-do-in-edit-buffer (&rest body)
  "Evaluate BODY in edit buffer if there is a code block at point.
Return t if a code block was found at point, nil otherwise."
  `(let ((org-src-window-setup 'switch-invisibly))
     (when (and (org-babel-where-is-src-block-head)
		(org-edit-src-code nil nil nil 'quietly))
       (unwind-protect (progn ,@body)
	 (if (org-bound-and-true-p org-edit-src-from-org-mode)
	     (org-edit-src-exit)))
       t)))

(defun org-babel-do-key-sequence-in-edit-buffer (key)
  "Read key sequence and execute the command in edit buffer.
Enter a key sequence to be executed in the language major-mode
edit buffer. For example, TAB will alter the contents of the
Org-mode code block according to the effect of TAB in the
language major-mode buffer. For languages that support
interactive sessions, this can be used to send code from the Org
buffer to the session for evaluation using the native major-mode
evaluation mechanisms."
  (interactive "kEnter key-sequence to execute in edit buffer: ")
  (org-babel-do-in-edit-buffer
   (call-interactively
    (key-binding (or key (read-key-sequence nil))))))

(defvar org-bracket-link-regexp)
;;;###autoload
(defun org-babel-open-src-block-result (&optional re-run)
  "If `point' is on a src block then open the results of the
source code block, otherwise return nil.  With optional prefix
argument RE-RUN the source-code block is evaluated even if
results already exist."
  (interactive "P")
  (when (org-babel-get-src-block-info)
    (save-excursion
      ;; go to the results, if there aren't any then run the block
      (goto-char (or (and (not re-run) (org-babel-where-is-src-block-result))
                     (progn (org-babel-execute-src-block)
                            (org-babel-where-is-src-block-result))))
      (end-of-line 1)
      (while (looking-at "[\n\r\t\f ]") (forward-char 1))
      ;; open the results
      (if (looking-at org-bracket-link-regexp)
          ;; file results
          (org-open-at-point)
        (let ((results (org-babel-read-result)))
          (flet ((echo-res (result)
                           (if (stringp result) result (format "%S" result))))
            (pop-to-buffer (get-buffer-create "org-babel-results"))
            (delete-region (point-min) (point-max))
            (if (listp results)
                ;; table result
                (insert (orgtbl-to-generic results '(:sep "\t" :fmt echo-res)))
              ;; scalar result
              (insert (echo-res results))))))
      t)))

;;;###autoload
(defun org-babel-execute-buffer (&optional arg)
  "Execute source code blocks in a buffer.
Call `org-babel-execute-src-block' on every source block in
the current buffer."
  (interactive "P")
  (org-save-outline-visibility t
    (org-babel-map-src-blocks nil
      (org-babel-execute-src-block arg))))

;;;###autoload
(defun org-babel-execute-subtree (&optional arg)
  "Execute source code blocks in a subtree.
Call `org-babel-execute-src-block' on every source block in
the current subtree."
  (interactive "P")
  (save-restriction
    (save-excursion
      (org-narrow-to-subtree)
      (org-babel-execute-buffer arg)
      (widen))))

;;;###autoload
(defun org-babel-sha1-hash (&optional info)
  "Generate an sha1 hash based on the value of info."
  (interactive)
  (let* ((info (or info (org-babel-get-src-block-info)))
         (hash (sha1
		(format "%s-%s"
			(mapconcat
			 (lambda (arg)
			   (if (stringp (cdr arg))
			       (mapconcat
				#'identity
				(sort (split-string (cdr arg)) #'string<) " ")
			     (cdr arg)))
			 (nth 2 info) ":")
			(nth 1 info)))))
    (when (interactive-p) (message hash))
    hash))

(defun org-babel-result-hash (&optional info)
  "Return the in-buffer hash associated with INFO."
  (org-babel-where-is-src-block-result nil info)
  (org-babel-clean-text-properties (match-string 3)))

(defun org-babel-hide-hash ()
  "Hide the hash in the current results line.
Only the initial `org-babel-hash-show' characters of the hash
will remain visible."
  (add-to-invisibility-spec '(org-babel-hide-hash . t))
  (save-excursion
    (when (and (re-search-forward org-babel-result-regexp nil t)
               (match-string 3))
      (let* ((start (match-beginning 3))
             (hide-start (+ org-babel-hash-show start))
             (end (match-end 3))
             (hash (match-string 3))
             ov1 ov2)
        (setq ov1 (make-overlay start hide-start))
        (setq ov2 (make-overlay hide-start end))
        (overlay-put ov2 'invisible 'org-babel-hide-hash)
        (overlay-put ov1 'babel-hash hash)))))

(defun org-babel-hide-all-hashes ()
  "Hide the hash in the current buffer.
Only the initial `org-babel-hash-show' characters of each hash
will remain visible.  This function should be called as part of
the `org-mode-hook'."
  (save-excursion
    (while (re-search-forward org-babel-result-regexp nil t)
      (goto-char (match-beginning 0))
      (org-babel-hide-hash)
      (goto-char (match-end 0)))))
(add-hook 'org-mode-hook 'org-babel-hide-all-hashes)

(defun org-babel-hash-at-point (&optional point)
  "Return the value of the hash at POINT.
The hash is also added as the last element of the kill ring.
This can be called with C-c C-c."
  (interactive)
  (let ((hash (car (delq nil (mapcar
			      (lambda (ol) (overlay-get ol 'babel-hash))
                              (overlays-at (or point (point))))))))
    (when hash (kill-new hash) (message hash))))
(add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-hash-at-point)

(defun org-babel-result-hide-spec ()
  "Hide portions of results lines.
Add `org-babel-hide-result' as an invisibility spec for hiding
portions of results lines."
  (add-to-invisibility-spec '(org-babel-hide-result . t)))
(add-hook 'org-mode-hook 'org-babel-result-hide-spec)

(defvar org-babel-hide-result-overlays nil
  "Overlays hiding results.")

(defun org-babel-result-hide-all ()
  "Fold all results in the current buffer."
  (interactive)
  (org-babel-show-result-all)
  (save-excursion
    (while (re-search-forward org-babel-result-regexp nil t)
      (save-excursion (goto-char (match-beginning 0))
                      (org-babel-hide-result-toggle-maybe)))))

(defun org-babel-show-result-all ()
  "Unfold all results in the current buffer."
  (mapc 'delete-overlay org-babel-hide-result-overlays)
  (setq org-babel-hide-result-overlays nil))

;;;###autoload
(defun org-babel-hide-result-toggle-maybe ()
  "Toggle visibility of result at point."
  (interactive)
  (let ((case-fold-search t))
    (if (save-excursion
          (beginning-of-line 1)
          (looking-at org-babel-result-regexp))
        (progn (org-babel-hide-result-toggle)
               t) ;; to signal that we took action
      nil))) ;; to signal that we did not

(defun org-babel-hide-result-toggle (&optional force)
  "Toggle the visibility of the current result."
  (interactive)
  (save-excursion
    (beginning-of-line)
    (if (re-search-forward org-babel-result-regexp nil t)
        (let ((start (progn (beginning-of-line 2) (- (point) 1)))
              (end (progn (goto-char (- (org-babel-result-end) 1)) (point)))
              ov)
          (if (memq t (mapcar (lambda (overlay)
                                (eq (overlay-get overlay 'invisible)
				    'org-babel-hide-result))
                              (overlays-at start)))
              (if (or (not force) (eq force 'off))
                  (mapc (lambda (ov)
                          (when (member ov org-babel-hide-result-overlays)
                            (setq org-babel-hide-result-overlays
                                  (delq ov org-babel-hide-result-overlays)))
                          (when (eq (overlay-get ov 'invisible)
                                    'org-babel-hide-result)
                            (delete-overlay ov)))
                        (overlays-at start)))
            (setq ov (make-overlay start end))
            (overlay-put ov 'invisible 'org-babel-hide-result)
            ;; make the block accessible to isearch
            (overlay-put
             ov 'isearch-open-invisible
             (lambda (ov)
               (when (member ov org-babel-hide-result-overlays)
                 (setq org-babel-hide-result-overlays
                       (delq ov org-babel-hide-result-overlays)))
               (when (eq (overlay-get ov 'invisible)
                         'org-babel-hide-result)
                 (delete-overlay ov))))
            (push ov org-babel-hide-result-overlays)))
      (error "Not looking at a result line"))))

;; org-tab-after-check-for-cycling-hook
(add-hook 'org-tab-first-hook 'org-babel-hide-result-toggle-maybe)
;; Remove overlays when changing major mode
(add-hook 'org-mode-hook
	  (lambda () (org-add-hook 'change-major-mode-hook
			      'org-babel-show-result-all 'append 'local)))

(defmacro org-babel-map-src-blocks (file &rest body)
  "Evaluate BODY forms on each source-block in FILE.
If FILE is nil evaluate BODY forms on source blocks in current
buffer.  During evaluation of BODY the following local variables
are set relative to the currently matched code block.

full-block ------- string holding the entirety of the code block
beg-block -------- point at the beginning of the code block
end-block -------- point at the end of the matched code block
lang ------------- string holding the language of the code block
beg-lang --------- point at the beginning of the lang
end-lang --------- point at the end of the lang
switches --------- string holding the switches
beg-switches ----- point at the beginning of the switches
end-switches ----- point at the end of the switches
header-args ------ string holding the header-args
beg-header-args -- point at the beginning of the header-args
end-header-args -- point at the end of the header-args
body ------------- string holding the body of the code block
beg-body --------- point at the beginning of the body
end-body --------- point at the end of the body"
  (declare (indent 1))
  `(let ((visited-p (or (null ,file)
			(get-file-buffer (expand-file-name ,file))))
	 (point (point)) to-be-removed)
     (save-window-excursion
       (when ,file (find-file ,file))
       (setq to-be-removed (current-buffer))
       (goto-char (point-min))
       (while (re-search-forward org-babel-src-block-regexp nil t)
         (goto-char (match-beginning 0))
	 (let ((full-block (match-string 0))
	       (beg-block (match-beginning 0))
	       (end-block (match-beginning 0))
	       (lang (match-string 2))
	       (beg-lang (match-beginning 2))
	       (end-lang (match-end 2))
	       (switches (match-string 3))
	       (beg-switches (match-beginning 3))
	       (end-switches (match-end 3))
	       (header-args (match-string 4))
	       (beg-header-args (match-beginning 4))
	       (end-header-args (match-end 4))
	       (body (match-string 5))
	       (beg-body (match-beginning 5))
	       (end-body (match-end 5)))
	   (save-match-data ,@body))
         (goto-char (match-end 0))))
     (unless visited-p
       (kill-buffer to-be-removed))
     (goto-char point)))

(defvar org-file-properties)
(defun org-babel-params-from-properties (&optional lang)
  "Retrieve parameters specified as properties.
Return an association list of any source block params which
may be specified in the properties of the current outline entry."
  (save-match-data
    (let (val sym)
      (delq nil
	    (mapcar
	     (lambda (header-arg)
	       (and (setq val
			  (or (condition-case nil
				  (org-entry-get (point) header-arg t)
				(error nil))
			      (cdr (assoc header-arg org-file-properties))))
		    (cons (intern (concat ":" header-arg)) val)))
	     (mapcar
	      'symbol-name
	      (append
	       org-babel-header-arg-names
	       (progn
		 (setq sym (intern (concat "org-babel-header-arg-names:" lang)))
		 (and (boundp sym) (eval sym))))))))))

(defun org-babel-params-from-buffer ()
  "Retrieve per-buffer parameters.
 Return an association list of any source block params which
may be specified at the top of the current buffer."
  (or org-babel-current-buffer-properties
      (setq org-babel-current-buffer-properties
	    (save-match-data
	      (save-excursion
		(save-restriction
		  (widen)
		  (goto-char (point-min))
		  (when (re-search-forward
			 (org-make-options-regexp (list "BABEL")) nil t)
		    (org-babel-parse-header-arguments
		     (org-match-string-no-properties 2)))))))))

(defvar org-src-preserve-indentation)
(defun org-babel-parse-src-block-match ()
  "Parse the results from a match of the `org-babel-src-block-regexp'."
  (let* ((block-indentation (length (match-string 1)))
	 (lang (org-babel-clean-text-properties (match-string 2)))
         (lang-headers (intern (concat "org-babel-default-header-args:" lang)))
	 (switches (match-string 3))
         (body (org-babel-clean-text-properties (match-string 5)))
	 (preserve-indentation (or org-src-preserve-indentation
				   (string-match "-i\\>" switches))))
    (list lang
          ;; get block body less properties, protective commas, and indentation
          (with-temp-buffer
            (save-match-data
              (insert (org-babel-strip-protective-commas body))
	      (unless preserve-indentation (org-do-remove-indentation))
              (buffer-string)))
	  (org-babel-merge-params
	   org-babel-default-header-args
	   (org-babel-params-from-buffer)
           (org-babel-params-from-properties lang)
	   (if (boundp lang-headers) (eval lang-headers) nil)
	   (org-babel-parse-header-arguments
            (org-babel-clean-text-properties (or (match-string 4) ""))))
	  switches
	  block-indentation)))

(defun org-babel-parse-inline-src-block-match ()
  "Parse the results from a match of the `org-babel-inline-src-block-regexp'."
  (let* ((lang (org-babel-clean-text-properties (match-string 2)))
         (lang-headers (intern (concat "org-babel-default-header-args:" lang))))
    (list lang
          (org-babel-strip-protective-commas
           (org-babel-clean-text-properties (match-string 5)))
          (org-babel-merge-params
           org-babel-default-inline-header-args
	   (org-babel-params-from-buffer)
           (org-babel-params-from-properties lang)
           (if (boundp lang-headers) (eval lang-headers) nil)
           (org-babel-parse-header-arguments
            (org-babel-clean-text-properties (or (match-string 4) "")))))))

(defun org-babel-parse-header-arguments (arg-string)
  "Parse a string of header arguments returning an alist."
  (if (> (length arg-string) 0)
      (delq nil
	    (mapcar
	     (lambda (arg)
	       (if (string-match
                    "\\([^ \f\t\n\r\v]+\\)[ \f\t\n\r\v]+\\([^ \f\t\n\r\v]+.*\\)"
                    arg)
		   (cons (intern (concat ":" (match-string 1 arg)))
                         (let ((raw (org-babel-chomp (match-string 2 arg))))
                           (if (org-babel-number-p raw)
                               raw (org-babel-read raw))))
		 (cons (intern (concat ":" arg)) nil)))
	     (split-string (concat " " arg-string) "[ \f\t\n\r\v]+:" t)))))

(defun org-babel-process-params (params)
  "Parse params and resolve references.

Return a list (session vars result-params result-type colnames rownames)."
  (let* ((session (cdr (assoc :session params)))
         (vars-and-names (org-babel-disassemble-tables
                          (org-babel-ref-variables params)
                          (cdr (assoc :hlines params))
                          (cdr (assoc :colnames params))
                          (cdr (assoc :rownames params))))
         (vars     (car   vars-and-names))
         (colnames (cadr  vars-and-names))
         (rownames (caddr vars-and-names))
	 (result-params (split-string (or (cdr (assoc :results params)) "")))
	 (result-type (cond ((member "output" result-params) 'output)
			    ((member "value" result-params) 'value)
			    (t 'value))))
    (list session vars result-params result-type colnames rownames)))

;; row and column names
(defun org-babel-del-hlines (table)
  "Remove all 'hlines from TABLE."
  (remove 'hline table))

(defun org-babel-get-colnames (table)
  "Return the column names of TABLE.
Return a cons cell, the `car' of which contains the TABLE less
colnames, and the `cdr' of which contains a list of the column
names."
  (if (equal 'hline (nth 1 table))
      (cons (cddr table) (car table))
    (cons (cdr table) (car table))))

(defun org-babel-get-rownames (table)
  "Return the row names of TABLE.
Return a cons cell, the `car' of which contains the TABLE less
colnames, and the `cdr' of which contains a list of the column
names.  Note: this function removes any hlines in TABLE."
  (flet ((trans (table) (apply #'mapcar* #'list table)))
    (let* ((width (apply 'max (mapcar (lambda (el) (if (listp el) (length el) 0)) table)))
           (table (trans (mapcar (lambda (row)
                                   (if (not (equal row 'hline))
                                       row
                                     (setq row '())
                                     (dotimes (n width) (setq row (cons 'hline row)))
                                     row))
                                 table))))
      (cons (mapcar (lambda (row) (if (equal (car row) 'hline) 'hline row))
                    (trans (cdr table)))
            (remove 'hline (car table))))))

(defun org-babel-put-colnames (table colnames)
  "Add COLNAMES to TABLE if they exist."
  (if colnames (apply 'list colnames 'hline table) table))

(defun org-babel-put-rownames (table rownames)
  "Add ROWNAMES to TABLE if they exist."
  (if rownames
      (mapcar (lambda (row)
                (if (listp row)
                    (cons (or (pop rownames) "") row)
                  row)) table)
    table))

(defun org-babel-pick-name (names selector)
  "Select one out of an alist of row or column names.
SELECTOR can be either a list of names in which case those names
will be returned directly, or an index into the list NAMES in
which case the indexed names will be return."
  (if (listp selector)
      selector
    (when names
      (if (and selector (symbolp selector) (not (equal t selector)))
	  (cdr (assoc selector names))
	(if (integerp selector)
	    (nth (- selector 1) names)
	  (cdr (car (last names))))))))

(defun org-babel-disassemble-tables (vars hlines colnames rownames)
  "Parse tables for further processing.
Process the variables in VARS according to the HLINES,
ROWNAMES and COLNAMES header arguments.  Return a list consisting
of the vars, cnames and rnames."
  (let (cnames rnames)
    (list
     (mapcar
      (lambda (var)
        (when (listp (cdr var))
          (when (and (not (equal colnames "no"))
                     (or colnames (and (equal (nth 1 (cdr var)) 'hline)
                                       (not (member 'hline (cddr (cdr var)))))))
            (let ((both (org-babel-get-colnames (cdr var))))
              (setq cnames (cons (cons (car var) (cdr both))
                                 cnames))
              (setq var (cons (car var) (car both)))))
          (when (and rownames (not (equal rownames "no")))
            (let ((both (org-babel-get-rownames (cdr var))))
              (setq rnames (cons (cons (car var) (cdr both))
                                 rnames))
              (setq var (cons (car var) (car both)))))
          (when (and hlines (not (equal hlines "yes")))
            (setq var (cons (car var) (org-babel-del-hlines (cdr var))))))
        var)
      vars)
     cnames rnames)))

(defun org-babel-reassemble-table (table colnames rownames)
  "Add column and row names to a table.
Given a TABLE and set of COLNAMES and ROWNAMES add the names
to the table for reinsertion to org-mode."
  (if (listp table)
      ((lambda (table)
         (if (and colnames (listp (car table)) (= (length (car table))
                                                  (length colnames)))
             (org-babel-put-colnames table colnames) table))
       (if (and rownames (= (length table) (length rownames)))
           (org-babel-put-rownames table rownames) table))
    table))

(defun org-babel-where-is-src-block-head ()
  "Find where the current source block begins.
Return the point at the beginning of the current source
block.  Specifically at the beginning of the #+BEGIN_SRC line.
If the point is not on a source block then return nil."
  (let ((initial (point)) top bottom)
    (or
     (save-excursion ;; on a source name line
       (beginning-of-line 1)
       (and (looking-at org-babel-src-name-regexp) (forward-line 1)
            (looking-at org-babel-src-block-regexp)
            (point)))
     (save-excursion ;; on a #+begin_src line
       (beginning-of-line 1)
       (and (looking-at org-babel-src-block-regexp)
            (point)))
     (save-excursion ;; inside a src block
       (and
        (re-search-backward "^[ \t]*#\\+begin_src" nil t) (setq top (point))
        (re-search-forward "^[ \t]*#\\+end_src" nil t) (setq bottom (point))
        (< top initial) (< initial bottom)
        (progn (goto-char top) (beginning-of-line 1)
	       (looking-at org-babel-src-block-regexp))
        (point))))))

;;;###autoload
(defun org-babel-goto-src-block-head ()
  "Go to the beginning of the current code block."
  (interactive)
  ((lambda (head)
     (if head (goto-char head) (error "not currently in a code block")))
   (org-babel-where-is-src-block-head)))

;;;###autoload
(defun org-babel-goto-named-src-block (name)
  "Go to a named source-code block."
  (interactive
   (let ((completion-ignore-case t))
     (list (org-icompleting-read "source-block name: "
				 (org-babel-src-block-names) nil t))))
  (let ((point (org-babel-find-named-block name)))
    (if point
        ;; taken from `org-open-at-point'
        (progn (goto-char point) (org-show-context))
      (message "source-code block '%s' not found in this buffer" name))))

(defun org-babel-find-named-block (name)
  "Find a named source-code block.
Return the location of the source block identified by source
NAME, or nil if no such block exists. Set match data according to
org-babel-named-src-block-regexp."
  (save-excursion
    (let ((case-fold-search t)
	  (regexp (org-babel-named-src-block-regexp-for-name name)) msg)
      (goto-char (point-min))
      (when (or (re-search-forward regexp nil t)
                (re-search-backward regexp nil t))
        (match-beginning 0)))))

(defun org-babel-src-block-names (&optional file)
  "Returns the names of source blocks in FILE or the current buffer."
  (save-excursion
    (when file (find-file file)) (goto-char (point-min))
    (let (names)
      (while (re-search-forward org-babel-src-name-w-name-regexp nil t)
	(setq names (cons (org-babel-clean-text-properties (match-string 2))
			  names)))
      names)))

;;;###autoload
(defun org-babel-goto-named-result (name)
  "Go to a named result."
  (interactive
   (let ((completion-ignore-case t))
     (list (org-icompleting-read "source-block name: "
				 (org-babel-result-names) nil t))))
  (let ((point (org-babel-find-named-result name)))
    (if point
        ;; taken from `org-open-at-point'
        (progn (goto-char point) (org-show-context))
      (message "result '%s' not found in this buffer" name))))

(defun org-babel-find-named-result (name)
  "Find a named result.
Return the location of the result named NAME in the current
buffer or nil if no such result exists."
  (save-excursion
    (goto-char (point-min))
    (when (re-search-forward
           (concat org-babel-result-regexp
                   "[ \t]" (regexp-quote name) "[ \t\n\f\v\r]") nil t)
      (beginning-of-line 0) (point))))

(defun org-babel-result-names (&optional file)
  "Returns the names of results in FILE or the current buffer."
  (save-excursion
    (when file (find-file file)) (goto-char (point-min))
    (let (names)
      (while (re-search-forward org-babel-result-w-name-regexp nil t)
	(setq names (cons (org-babel-clean-text-properties (match-string 4))
			  names)))
      names)))

;;;###autoload
(defun org-babel-next-src-block (&optional arg)
  "Jump to the next source block.
With optional prefix argument ARG, jump forward ARG many source blocks."
  (interactive "P")
  (when (looking-at org-babel-src-block-regexp) (forward-char 1))
  (condition-case nil
      (re-search-forward org-babel-src-block-regexp nil nil (or arg 1))
    (error (error "No further code blocks")))
  (goto-char (match-beginning 0)) (org-show-context))

;;;###autoload
(defun org-babel-previous-src-block (&optional arg)
  "Jump to the previous source block.
With optional prefix argument ARG, jump backward ARG many source blocks."
  (interactive "P")
  (condition-case nil
      (re-search-backward org-babel-src-block-regexp nil nil (or arg 1))
    (error (error "No previous code blocks")))
  (goto-char (match-beginning 0)) (org-show-context))

(defvar org-babel-load-languages)

;;;###autoload
(defun org-babel-demarcate-block (&optional arg)
  "Wrap or split the code in the region or on the point.
When called from inside of a code block the current block is
split.  When called from outside of a code block a new code block
is created.  In both cases if the region is demarcated and if the
region is not active then the point is demarcated."
  (interactive "P")
  (let ((info (org-babel-get-src-block-info))
	(stars (concat (make-string (or (org-current-level) 1) ?*) " ")))
    (if info
        (mapc
         (lambda (place)
           (save-excursion
             (goto-char place)
             (let ((lang (nth 0 info))
                   (indent (make-string (nth 6 info) ? )))
	       (when (string-match "^[[:space:]]*$"
				   (buffer-substring (point-at-bol)
						     (point-at-eol)))
		 (delete-region (point-at-bol) (point-at-eol)))
               (insert (concat (if (looking-at "^") "" "\n")
                               indent "#+end_src\n"
                               (if arg stars indent) "\n"
                               indent "#+begin_src " lang
                               (if (looking-at "[\n\r]") "" "\n")))))
	   (move-end-of-line 2))
         (sort (if (region-active-p) (list (mark) (point)) (list (point))) #'>))
      (let ((start (point))
	    (lang (org-icompleting-read "Lang: "
					(mapcar (lambda (el) (symbol-name (car el)))
						org-babel-load-languages)))
	    (body (delete-and-extract-region
		   (if (region-active-p) (mark) (point)) (point))))
	(insert (concat (if (looking-at "^") "" "\n")
			(if arg (concat stars "\n") "")
			"#+begin_src " lang "\n"
			body
			(if (or (= (length body) 0)
				(string-match "[\r\n]$" body)) "" "\n")
			"#+end_src\n"))
	(goto-char start) (move-end-of-line 1)))))

(defvar org-babel-lob-one-liner-regexp)
(defun org-babel-where-is-src-block-result (&optional insert info hash indent)
  "Find where the current source block results begin.
Return the point at the beginning of the result of the current
source block.  Specifically at the beginning of the results line.
If no result exists for this block then create a results line
following the source block."
  (save-excursion
    (let* ((on-lob-line (progn (beginning-of-line 1)
			       (looking-at org-babel-lob-one-liner-regexp)))
	   (name (if on-lob-line
		     (nth 0 (org-babel-lob-get-info))
		   (nth 4 (or info (org-babel-get-src-block-info)))))
	   (head (unless on-lob-line (org-babel-where-is-src-block-head)))
	   found beg end)
      (when head (goto-char head))
      (setq
       found ;; was there a result (before we potentially insert one)
       (or
	(and
	 ;; named results:
	 ;; - return t if it is found, else return nil
	 ;; - if it does not need to be rebuilt, then don't set end
	 ;; - if it does need to be rebuilt then do set end
	 name (setq beg (org-babel-find-named-result name))
	 (prog1 beg
	   (when (and hash (not (string= hash (match-string 3))))
	     (goto-char beg) (setq end beg) ;; beginning of result
	     (forward-line 1)
	     (delete-region end (org-babel-result-end)) nil)))
	(and
	 ;; unnamed results:
	 ;; - return t if it is found, else return nil
	 ;; - if it is found, and the hash doesn't match, delete and set end
	 (or on-lob-line (re-search-forward "^[ \t]*#\\+end_src" nil t))
	 (progn (end-of-line 1)
		(if (eobp) (insert "\n") (forward-char 1))
		(setq end (point))
		(or (and (not name)
			 (progn ;; unnamed results line already exists
			   (re-search-forward "[^ \f\t\n\r\v]" nil t)
			   (beginning-of-line 1)
			   (looking-at
			    (concat org-babel-result-regexp "\n")))
			 (prog1 (point)
			   ;; must remove and rebuild if hash!=old-hash
			   (if (and hash (not (string= hash (match-string 3))))
			       (prog1 nil
				 (forward-line 1)
				 (delete-region
				  end (org-babel-result-end)))
			     (setq end nil)))))))))
      (if (and insert end)
	  (progn
	    (goto-char end)
	    (unless beg
	      (if (looking-at "[\n\r]") (forward-char 1) (insert "\n")))
	    (insert (concat
		     (if indent
			 (mapconcat
			  (lambda (el) " ")
			  (number-sequence 1 indent) "")
		       "")
		     "#+results"
		     (when hash (concat "["hash"]"))
		     ":"
		     (when name (concat " " name)) "\n"))
	    (unless beg (insert "\n") (backward-char))
	    (beginning-of-line 0)
	    (if hash (org-babel-hide-hash))
	    (point))
	found))))

(defvar org-block-regexp)
(defun org-babel-read-result ()
  "Read the result at `point' into emacs-lisp."
  (let ((case-fold-search t) result-string)
    (cond
     ((org-at-table-p) (org-babel-read-table))
     ((looking-at org-bracket-link-regexp) (org-babel-read-link))
     ((looking-at org-block-regexp) (org-babel-trim (match-string 4)))
     ((looking-at "^[ \t]*: ")
      (setq result-string
	    (org-babel-trim
	     (mapconcat (lambda (line)
                          (if (and (> (length line) 1)
                                   (string-match "^[ \t]*: \\(.+\\)" line))
                              (match-string 1 line)
                            line))
			(split-string
			 (buffer-substring
                          (point) (org-babel-result-end)) "[\r\n]+")
			"\n")))
      (or (org-babel-number-p result-string) result-string))
     ((looking-at org-babel-result-regexp)
      (save-excursion (forward-line 1) (org-babel-read-result))))))

(defun org-babel-read-table ()
  "Read the table at `point' into emacs-lisp."
  (mapcar (lambda (row)
            (if (and (symbolp row) (equal row 'hline)) row
              (mapcar #'org-babel-read row)))
          (org-table-to-lisp)))

(defvar org-link-types-re)
(defun org-babel-read-link ()
  "Read the link at `point' into emacs-lisp.
If the path of the link is a file path it is expanded using
`expand-file-name'."
  (let* ((case-fold-search t)
         (raw (and (looking-at org-bracket-link-regexp)
                   (org-babel-clean-text-properties (match-string 1))))
         (type (and (string-match org-link-types-re raw)
                    (match-string 1 raw))))
    (cond
     ((not type) (expand-file-name raw))
     ((string= type "file")
      (and (string-match "file\\(.*\\):\\(.+\\)" raw)
           (expand-file-name (match-string 2 raw))))
     (t raw))))

(defun org-babel-insert-result
  (result &optional result-params info hash indent lang)
  "Insert RESULT into the current buffer.
By default RESULT is inserted after the end of the
current source block.  With optional argument RESULT-PARAMS
controls insertion of results in the org-mode file.
RESULT-PARAMS can take the following values...

replace - (default option) insert results after the source block
          replacing any previously inserted results

silent -- no results are inserted

file ---- the results are interpreted as a file path, and are
          inserted into the buffer using the Org-mode file syntax

raw ----- results are added directly to the org-mode file.  This
          is a good option if you code block will output org-mode
          formatted text.

org ----- similar in effect to raw, only the results are wrapped
          in an org code block.  Similar to the raw option, on
          export the results will be interpreted as org-formatted
          text, however by wrapping the results in an org code
          block they can be replaced upon re-execution of the
          code block.

html ---- results are added inside of a #+BEGIN_HTML block.  This
          is a good option if you code block will output html
          formatted text.

latex --- results are added inside of a #+BEGIN_LATEX block.
          This is a good option if you code block will output
          latex formatted text.

code ---- the results are extracted in the syntax of the source
          code of the language being evaluated and are added
          inside of a #+BEGIN_SRC block with the source-code
          language set appropriately.  Note this relies on the
          optional LANG argument."
  (if (stringp result)
      (progn
        (setq result (org-babel-clean-text-properties result))
        (when (member "file" result-params)
          (setq result (org-babel-result-to-file result))))
    (unless (listp result) (setq result (format "%S" result))))
  (if (and result-params (member "silent" result-params))
      (progn
	(message (replace-regexp-in-string "%" "%%" (format "%S" result)))
	result)
    (when (and (stringp result) ;; ensure results end in a newline
	       (> (length result) 0)
	       (not (or (string-equal (substring result -1) "\n")
			(string-equal (substring result -1) "\r"))))
      (setq result (concat result "\n")))
    (save-excursion
      (let ((existing-result (org-babel-where-is-src-block-result
			      t info hash indent))
	    (results-switches
	     (cdr (assoc :results_switches (nth 2 info))))
	    beg end)
	(if (not existing-result)
	    (setq beg (point))
	  (goto-char existing-result)
	  (save-excursion
	    (re-search-forward "#" nil t)
	    (setq indent (- (current-column) 1)))
	  (forward-line 1)
	  (setq beg (point))
	  (cond
	   ((member "replace" result-params)
	    (delete-region (point) (org-babel-result-end)))
	   ((member "append" result-params)
	    (goto-char (org-babel-result-end)) (setq beg (point)))
	   ((member "prepend" result-params) ;; already there
	    )))
	(setq results-switches
	      (if results-switches (concat " " results-switches) ""))
	(cond
	 ;; do nothing for an empty result
	 ((= (length result) 0))
	 ;; assume the result is a table if it's not a string
	 ((not (stringp result))
	  (insert (concat (orgtbl-to-orgtbl
			   (if (or (eq 'hline (car result))
				   (and (listp (car result))
					(listp (cdr (car result)))))
			       result (list result))
			   '(:fmt (lambda (cell) (format "%s" cell)))) "\n"))
	  (goto-char beg) (when (org-at-table-p) (org-table-align)))
	 ((member "file" result-params)
	  (insert result))
	 ((member "html" result-params)
	  (insert (format "#+BEGIN_HTML%s\n%s#+END_HTML\n"
			  results-switches result)))
	 ((member "latex" result-params)
	  (insert (format "#+BEGIN_LaTeX%s\n%s#+END_LaTeX\n"
			  results-switches result)))
	 ((member "code" result-params)
	  (insert (format "#+BEGIN_SRC %s%s\n%s#+END_SRC\n"
			  (or lang "none") results-switches result)))
	 ((member "org" result-params)
	  (insert (format "#+BEGIN_SRC org\n%s#+END_SRC\n" result)))
	 ((member "raw" result-params)
	  (save-excursion (insert result)) (if (org-at-table-p) (org-cycle)))
	 (t
	  (org-babel-examplize-region
	   (point) (progn (insert result) (point)) results-switches)))
	;; possibly indent the results to match the #+results line
	(setq end (if (listp result) (org-table-end) (point)))
	(when (and indent (> indent 0)
		   ;; in this case `table-align' does the work for us
		   (not (and (listp result)
			     (member "append" result-params))))
	  (indent-rigidly beg end indent))))
    (if (= (length result) 0)
	(if (member "value" result-params)
	    (message "No result returned by source block")
	  (message "Source block produced no output"))
      (message "finished"))))

(defun org-babel-remove-result (&optional info)
  "Remove the result of the current source block."
  (interactive)
  (let ((location (org-babel-where-is-src-block-result nil info)) start)
    (when location
      (save-excursion
        (goto-char location) (setq start (point)) (forward-line 1)
        (delete-region start (org-babel-result-end))))))

(defun org-babel-result-end ()
  "Return the point at the end of the current set of results"
  (save-excursion
    (if (org-at-table-p)
        (progn (goto-char (org-table-end)) (point))
      (let ((case-fold-search t))
        (cond
         ((looking-at "[ \t]*#\\+begin_latex")
          (re-search-forward "[ \t]*#\\+end_latex" nil t)
          (forward-line 1))
         ((looking-at "[ \t]*#\\+begin_html")
          (re-search-forward "[ \t]*#\\+end_html" nil t)
          (forward-line 1))
         ((looking-at "[ \t]*#\\+begin_example")
          (re-search-forward "[ \t]*#\\+end_example" nil t)
          (forward-line 1))
         ((looking-at "[ \t]*#\\+begin_src")
          (re-search-forward "[ \t]*#\\+end_src" nil t)
          (forward-line 1))
         (t (progn (while (looking-at "[ \t]*\\(: \\|\\[\\[\\)")
                     (forward-line 1))))))
      (point))))

(defun org-babel-result-to-file (result)
  "Convert RESULT into an `org-mode' link.
If the `default-directory' is different from the containing
file's directory then expand relative links."
  (format
   "[[file:%s]]"
   (if (and default-directory
            buffer-file-name
            (not (string= (expand-file-name default-directory)
                          (expand-file-name
                           (file-name-directory buffer-file-name)))))
       (expand-file-name result default-directory)
     result)))

(defun org-babel-examplize-region (beg end &optional results-switches)
  "Comment out region using the ': ' org example quote."
  (interactive "*r")
  (let ((size (count-lines beg end)))
    (save-excursion
      (cond ((= size 0)
	     (error (concat "This should not be impossible:"
                            "a newline was appended to result if missing")))
	    ((< size org-babel-min-lines-for-block-output)
	     (goto-char beg)
	     (dotimes (n size)
	       (beginning-of-line 1) (insert ": ") (forward-line 1)))
	    (t
	     (goto-char beg)
	     (insert (if results-switches
                         (format "#+begin_example%s\n" results-switches)
                       "#+begin_example\n"))
	     (forward-char (- end beg))
	     (insert "#+end_example\n"))))))

(defun org-babel-merge-params (&rest plists)
  "Combine all parameter association lists in PLISTS.
Later elements of PLISTS override the values of previous element.
This takes into account some special considerations for certain
parameters when merging lists."
  (let ((results-exclusive-groups
	 '(("file" "vector" "table" "scalar" "raw" "org"
            "html" "latex" "code" "pp")
	   ("replace" "silent" "append" "prepend")
	   ("output" "value")))
	(exports-exclusive-groups
	 '(("code" "results" "both" "none")))
	params results exports tangle noweb cache vars var ref shebang comments)
    (flet ((e-merge (exclusive-groups &rest result-params)
             ;; maintain exclusivity of mutually exclusive parameters
             (let (output)
               (mapc (lambda (new-params)
                       (mapc (lambda (new-param)
                               (mapc (lambda (exclusive-group)
                                       (when (member new-param exclusive-group)
                                         (mapcar (lambda (excluded-param)
                                                   (setq output
                                                         (delete
                                                          excluded-param
                                                          output)))
                                                 exclusive-group)))
                                     exclusive-groups)
                               (setq output (org-uniquify
                                             (cons new-param output))))
                             new-params))
                     result-params)
               output)))
      (mapc (lambda (plist)
              (mapc (lambda (pair)
                      (case (car pair)
                        (:var
                         ;; we want only one specification per variable
                         (when (string-match
                                (concat "^\\([^= \f\t\n\r\v]+\\)[ \t]*="
                                        "[ \t]*\\([^\f\n\r\v]+\\)$") (cdr pair))
                           ;; TODO: When is this not true?
                           (setq var (intern (match-string 1 (cdr pair)))
                                 ref (match-string 2 (cdr pair))
                                 vars (cons (cons var ref)
                                            (assq-delete-all var vars)))))
                        (:results
                         (setq results
			       (e-merge results-exclusive-groups
                                        results (split-string (cdr pair)))))
			(:file
			 (when (cdr pair)
			   (setq results (e-merge results-exclusive-groups
                                                  results '("file")))
			   (unless (or (member "both" exports)
                                       (member "none" exports)
                                       (member "code" exports))
			     (setq exports (e-merge exports-exclusive-groups
                                                    exports '("results"))))
			   (setq params
                                 (cons pair
                                       (assq-delete-all (car pair) params)))))
                        (:exports
                         (setq exports
                               (e-merge exports-exclusive-groups
                                        exports (split-string (cdr pair)))))
                        (:tangle ;; take the latest -- always overwrite
                         (setq tangle (or (list (cdr pair)) tangle)))
                        (:noweb
                         (setq noweb
                               (e-merge '(("yes" "no")) noweb
                                        (split-string (or (cdr pair) "")))))
                        (:cache
                         (setq cache
                               (e-merge '(("yes" "no")) cache
                                        (split-string (or (cdr pair) "")))))
                        (:shebang ;; take the latest -- always overwrite
                         (setq shebang (or (list (cdr pair)) shebang)))
                        (:comments
                         (setq comments
                               (e-merge '(("yes" "no")) comments
                                        (split-string (or (cdr pair) "")))))
                        (t ;; replace: this covers e.g. :session
                         (setq params
                               (cons pair
                                     (assq-delete-all (car pair) params))))))
                    plist))
            plists))
    (setq vars (mapcar (lambda (pair) (format "%s=%s" (car pair) (cdr pair))) vars))
    (while vars (setq params (cons (cons :var (pop vars)) params)))
    (cons (cons :comments (mapconcat 'identity comments " "))
          (cons (cons :shebang (mapconcat 'identity shebang " "))
                (cons (cons :cache (mapconcat 'identity cache " "))
                      (cons (cons :noweb (mapconcat 'identity noweb " "))
                            (cons (cons :tangle (mapconcat 'identity tangle " "))
                                  (cons (cons :exports
                                              (mapconcat 'identity exports " "))
                                        (cons
                                         (cons :results
                                               (mapconcat 'identity results " "))
                                         params)))))))))

(defun org-babel-expand-noweb-references (&optional info parent-buffer)
  "Expand Noweb references in the body of the current source code block.

For example the following reference would be replaced with the
body of the source-code block named 'example-block'.

<<example-block>>

Note that any text preceding the <<foo>> construct on a line will
be interposed between the lines of the replacement text.  So for
example if <<foo>> is placed behind a comment, then the entire
replacement text will also be commented.

This function must be called from inside of the buffer containing
the source-code block which holds BODY.

In addition the following syntax can be used to insert the
results of evaluating the source-code block named 'example-block'.

<<example-block()>>

Any optional arguments can be passed to example-block by placing
the arguments inside the parenthesis following the convention
defined by `org-babel-lob'.  For example

<<example-block(a=9)>>

would set the value of argument \"a\" equal to \"9\".  Note that
these arguments are not evaluated in the current source-code
block but are passed literally to the \"example-block\"."
  (let* ((parent-buffer (or parent-buffer (current-buffer)))
         (info (or info (org-babel-get-src-block-info)))
         (lang (nth 0 info))
         (body (nth 1 info))
         (new-body "") index source-name evaluate prefix)
    (flet ((nb-add (text)
                   (setq new-body (concat new-body text))))
      (with-temp-buffer
        (insert body) (goto-char (point-min))
        (setq index (point))
        (while (and (re-search-forward "<<\\(.+?\\)>>" nil t))
          (save-match-data (setf source-name (match-string 1)))
          (save-match-data (setq evaluate (string-match "\(.*\)" source-name)))
          (save-match-data
            (setq prefix
                  (buffer-substring (match-beginning 0)
                                    (save-excursion
                                      (beginning-of-line 1) (point)))))
          ;; add interval to new-body (removing noweb reference)
          (goto-char (match-beginning 0))
          (nb-add (buffer-substring index (point)))
          (goto-char (match-end 0))
          (setq index (point))
          (nb-add (with-current-buffer parent-buffer
		    (mapconcat ;; interpose PREFIX between every line
                     #'identity
                     (split-string
                      (if evaluate
                          (let ((raw (org-babel-ref-resolve-reference
                                      source-name nil)))
                            (if (stringp raw) raw (format "%S" raw)))
			(save-restriction
			  (widen)
			  (let ((point (org-babel-find-named-block
					source-name)))
			    (if point
				(save-excursion
				  (goto-char point)
				  (org-babel-trim
				   (org-babel-expand-noweb-references
				    (org-babel-get-src-block-info))))
			      ;; optionally raise an error if named
			      ;; source-block doesn't exist
			      (if (member lang org-babel-noweb-error-langs)
				  (error "%s"
					 (concat
					  "<<" source-name ">> "
					  "could not be resolved (see "
					  "`org-babel-noweb-error-langs')"))
				"")))))
		      "[\n\r]") (concat "\n" prefix)))))
        (nb-add (buffer-substring index (point-max)))))
    new-body))

(defun org-babel-clean-text-properties (text)
  "Strip all properties from text return."
  (when text
    (set-text-properties 0 (length text) nil text) text))

(defun org-babel-strip-protective-commas (body)
  "Strip protective commas from bodies of source blocks."
  (replace-regexp-in-string "^,#" "#" body))

(defun org-babel-read (cell)
  "Convert the string value of CELL to a number if appropriate.
Otherwise if cell looks like lisp (meaning it starts with a
\"(\" or a \"'\") then read it as lisp, otherwise return it
unmodified as a string.

This is taken almost directly from `org-read-prop'."
  (if (and (stringp cell) (not (equal cell "")))
      (or (org-babel-number-p cell)
          (if (or (equal "(" (substring cell 0 1))
                  (equal "'" (substring cell 0 1))
                  (equal "`" (substring cell 0 1)))
              (eval (read cell))
            (progn (set-text-properties 0 (length cell) nil cell) cell)))
    cell))

(defun org-babel-number-p (string)
  "If STRING represents a number return it's value."
  (if (and (string-match "^-?[0-9]*\\.?[0-9]*$" string)
           (= (length (substring string (match-beginning 0)
				 (match-end 0)))
	      (length string)))
      (string-to-number string)))

(defun org-babel-import-elisp-from-file (file-name &optional separator)
  "Read the results located at FILE-NAME into an elisp table.
If the table is trivial, then return it as a scalar."
  (let (result)
    (save-window-excursion
      (with-temp-buffer
	(condition-case nil
	    (progn
	      (org-table-import file-name separator)
	      (delete-file file-name)
	      (setq result (mapcar (lambda (row)
				     (mapcar #'org-babel-string-read row))
				   (org-table-to-lisp))))
	  (error nil)))
      (if (null (cdr result)) ;; if result is trivial vector, then scalarize it
	  (if (consp (car result))
	      (if (null (cdr (car result)))
		  (caar result)
		result)
	    (car result))
	result))))

(defun org-babel-string-read (cell)
  "Strip nested \"s from around strings."
  (org-babel-read (or (and (stringp cell)
                           (string-match "\\\"\\(.+\\)\\\"" cell)
                           (match-string 1 cell))
                      cell)))

(defun org-babel-reverse-string (string)
  "Return the reverse of STRING."
  (apply 'string (reverse (string-to-list string))))

(defun org-babel-chomp (string &optional regexp)
  "Strip trailing spaces and carriage returns from STRING.
Default regexp used is \"[ \f\t\n\r\v]\" but can be
overwritten by specifying a regexp as a second argument."
  (let ((regexp (or regexp "[ \f\t\n\r\v]")))
    (while (and (> (length string) 0)
                (string-match regexp (substring string -1)))
      (setq string (substring string 0 -1)))
    string))

(defun org-babel-trim (string &optional regexp)
  "Strip leading and trailing spaces and carriage returns from STRING.
Like `org-babel-chomp' only it runs on both the front and back
of the string."
  (org-babel-chomp (org-babel-reverse-string
                    (org-babel-chomp (org-babel-reverse-string string) regexp))
                   regexp))

(defvar org-babel-org-babel-call-process-region-original nil)
(defun org-babel-tramp-handle-call-process-region
  (start end program &optional delete buffer display &rest args)
  "Use tramp to handle call-process-region.
Fixes a bug in `tramp-handle-call-process-region'."
  (if (and (featurep 'tramp) (file-remote-p default-directory))
      (let ((tmpfile (tramp-compat-make-temp-file "")))
	(write-region start end tmpfile)
	(when delete (delete-region start end))
	(unwind-protect
	    ;;	(apply 'call-process program tmpfile buffer display args)
            ;; bug in tramp
	    (apply 'process-file program tmpfile buffer display args)
	  (delete-file tmpfile)))
    ;; org-babel-call-process-region-original is the original emacs definition. It
    ;; is in scope from the let binding in org-babel-execute-src-block
    (apply org-babel-call-process-region-original
           start end program delete buffer display args)))

(defun org-babel-local-file-name (file)
  "Return the local name component of FILE."
  (if (file-remote-p file)
      (let (localname)
	(with-parsed-tramp-file-name file nil
	  localname))
    file))

(defun org-babel-process-file-name (name &optional no-quote-p)
  "Prepare NAME to be used in an external process.
If NAME specifies a remote location, the remote portion of the
name is removed, since in that case the process will be executing
remotely. The file name is then processed by
`expand-file-name'. Unless second argument NO-QUOTE-P is non-nil,
the file name is additionally processed by
`shell-quote-argument'"
  ((lambda (f) (if no-quote-p f (shell-quote-argument f)))
   (expand-file-name (org-babel-local-file-name name))))

(defvar org-babel-temporary-directory)
(unless (or noninteractive (boundp 'org-babel-temporary-directory))
  (defvar org-babel-temporary-directory
    (or (and (boundp 'org-babel-temporary-directory)
	     (file-exists-p org-babel-temporary-directory)
	     org-babel-temporary-directory)
	(make-temp-file "babel-" t))
    "Directory to hold temporary files created to execute code blocks.
Used by `org-babel-temp-file'.  This directory will be removed on
Emacs shutdown."))

(defun org-babel-temp-file (prefix &optional suffix)
  "Create a temporary file in the `org-babel-temporary-directory'.
Passes PREFIX and SUFFIX directly to `make-temp-file' with the
value of `temporary-file-directory' temporarily set to the value
of `org-babel-temporary-directory'."
  (if (file-remote-p default-directory)
      (make-temp-file
       (concat (file-remote-p default-directory)
	       (expand-file-name 
		prefix temporary-file-directory)
	       nil suffix))
    (let ((temporary-file-directory
	   (or (and (file-exists-p org-babel-temporary-directory)
		    org-babel-temporary-directory)
	       temporary-file-directory)))
      (make-temp-file prefix nil suffix))))

(defun org-babel-remove-temporary-directory ()
  "Remove `org-babel-temporary-directory' on Emacs shutdown."
  (when (and (boundp 'org-babel-temporary-directory)
	     (file-exists-p org-babel-temporary-directory))
    ;; taken from `delete-directory' in files.el
    (mapc (lambda (file)
	    ;; This test is equivalent to
	    ;; (and (file-directory-p fn) (not (file-symlink-p fn)))
	    ;; but more efficient
	    (if (eq t (car (file-attributes file)))
		(delete-directory file)
	      (delete-file file)))
	  ;; We do not want to delete "." and "..".
	  (directory-files org-babel-temporary-directory 'full
			   "^\\([^.]\\|\\.\\([^.]\\|\\..\\)\\).*"))
    (delete-directory org-babel-temporary-directory)))

(add-hook 'kill-emacs-hook 'org-babel-remove-temporary-directory)

(provide 'ob)

;; arch-tag: 01a7ebee-06c5-4ee4-a709-e660d28c0af1

;;; ob.el ends here

debug log:

solving b05100c ...
found b05100c in https://git.savannah.gnu.org/cgit/emacs.git

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

Code repositories for project(s) associated with this external index

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

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