lisp/ob.el

   1 ;;; ob.el --- working with code blocks in org-mode
   2
   3 ;; Copyright (C) 2009-2011  Free Software Foundation, Inc.
   4
   5 ;; Author: Eric Schulte
   6 ;;      Dan Davison
   7 ;; Keywords: literate programming, reproducible research
   8 ;; Homepage: http://orgmode.org
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 ;;; Code:
  26 (eval-when-compile
  27   (require 'cl))
  28 (require 'ob-eval)
  29 (require 'org-macs)
  30
  31 (defvar org-babel-call-process-region-original)
  32 (defvar org-src-lang-modes)
  33 (defvar org-babel-library-of-babel)
  34 (declare-function show-all "outline" ())
  35 (declare-function tramp-compat-make-temp-file "tramp-compat"
  36                   (filename &optional dir-flag))
  37 (declare-function tramp-dissect-file-name "tramp" (name &optional nodefault))
  38 (declare-function tramp-file-name-user "tramp" (vec))
  39 (declare-function tramp-file-name-host "tramp" (vec))
  40 (declare-function with-parsed-tramp-file-name "tramp" (filename var &rest body))
  41 (declare-function org-icompleting-read "org" (&rest args))
  42 (declare-function org-edit-src-code "org-src"
  43                   (&optional context code edit-buffer-name quietp))
  44 (declare-function org-edit-src-exit "org-src"  (&optional context))
  45 (declare-function org-open-at-point "org" (&optional in-emacs reference-buffer))
  46 (declare-function org-save-outline-visibility "org" (use-markers &rest body))
  47 (declare-function org-outline-overlay-data "org" (&optional use-markers))
  48 (declare-function org-set-outline-overlay-data "org" (data))
  49 (declare-function org-narrow-to-subtree "org" ())
  50 (declare-function org-entry-get "org"
  51                   (pom property &optional inherit literal-nil))
  52 (declare-function org-make-options-regexp "org" (kwds &optional extra))
  53 (declare-function org-do-remove-indentation "org" (&optional n))
  54 (declare-function org-show-context "org" (&optional key))
  55 (declare-function org-at-table-p "org" (&optional table-type))
  56 (declare-function org-cycle "org" (&optional arg))
  57 (declare-function org-uniquify "org" (list))
  58 (declare-function org-current-level "org" ())
  59 (declare-function org-table-import "org-table" (file arg))
  60 (declare-function org-add-hook "org-compat"
  61                   (hook function &optional append local))
  62 (declare-function org-table-align "org-table" ())
  63 (declare-function org-table-end "org-table" (&optional table-type))
  64 (declare-function orgtbl-to-generic "org-table" (table params))
  65 (declare-function orgtbl-to-orgtbl "org-table" (table params))
  66 (declare-function org-babel-tangle-comment-links "ob-tangle" (&optional info))
  67 (declare-function org-babel-lob-get-info "ob-lob" nil)
  68 (declare-function org-babel-ref-split-args "ob-ref" (arg-string))
  69 (declare-function org-babel-ref-parse "ob-ref" (assignment))
  70 (declare-function org-babel-ref-resolve "ob-ref" (ref))
  71 (declare-function org-babel-ref-goto-headline-id "ob-ref" (id))
  72 (declare-function org-babel-ref-headline-body "ob-ref" ())
  73 (declare-function org-babel-lob-execute-maybe "ob-lob" ())
  74 (declare-function org-number-sequence "org-compat" (from &optional to inc))
  75 (declare-function org-at-item-p "org-list" ())
  76 (declare-function org-list-parse-list "org-list" (&optional delete))
  77 (declare-function org-list-to-generic "org-list" (LIST PARAMS))
  78 (declare-function org-list-struct "org-list" ())
  79 (declare-function org-list-prevs-alist "org-list" (struct))
  80 (declare-function org-list-get-list-end "org-list" (item struct prevs))
  81
  82 (defgroup org-babel nil
  83   "Code block evaluation and management in `org-mode' documents."
  84   :tag "Babel"
  85   :group 'org)
  86
  87 (defcustom org-confirm-babel-evaluate t
  88   "Confirm before evaluation.
  89 Require confirmation before interactively evaluating code
  90 blocks in Org-mode buffers.  The default value of this variable
  91 is t, meaning confirmation is required for any code block
  92 evaluation.  This variable can be set to nil to inhibit any
  93 future confirmation requests.  This variable can also be set to a
  94 function which takes two arguments the language of the code block
  95 and the body of the code block.  Such a function should then
  96 return a non-nil value if the user should be prompted for
  97 execution or nil if no prompt is required.
  98
  99 Warning: Disabling confirmation may result in accidental
 100 evaluation of potentially harmful code.  It may be advisable
 101 remove code block execution from C-c C-c as further protection
 102 against accidental code block evaluation.  The
 103 `org-babel-no-eval-on-ctrl-c-ctrl-c' variable can be used to
 104 remove code block execution from the C-c C-c keybinding."
 105     :group 'org-babel
 106     :type '(choice boolean function))
 107 ;; don't allow this variable to be changed through file settings
 108 (put 'org-confirm-babel-evaluate 'safe-local-variable (lambda (x) (eq x t)))
 109
 110 (defcustom org-babel-no-eval-on-ctrl-c-ctrl-c nil
 111   "Remove code block evaluation from the C-c C-c key binding."
 112   :group 'org-babel
 113   :type 'boolean)
 114
 115 (defvar org-babel-src-name-regexp
 116   "^[ \t]*#\\+\\(srcname\\|source\\|function\\):[ \t]*"
 117   "Regular expression used to match a source name line.")
 118
 119 (defvar org-babel-multi-line-header-regexp
 120   "^[ \t]*#\\+headers?:[ \t]*\\([^\n]*\\)$"
 121   "Regular expression used to match multi-line header arguments.")
 122
 123 (defvar org-babel-src-name-w-name-regexp
 124   (concat org-babel-src-name-regexp
 125           "\\("
 126           org-babel-multi-line-header-regexp
 127           "\\)*"
 128           "\\([^ ()\f\t\n\r\v]+\\)\\(\(\\(.*\\)\)\\|\\)")
 129   "Regular expression matching source name lines with a name.")
 130
 131 (defvar org-babel-src-block-regexp
 132   (concat
 133    ;; (1) indentation                 (2) lang
 134    "^\\([ \t]*\\)#\\+begin_src[ \t]+\\([^ \f\t\n\r\v]+\\)[ \t]*"
 135    ;; (3) switches
 136    "\\([^\":\n]*\"[^\"\n*]*\"[^\":\n]*\\|[^\":\n]*\\)"
 137    ;; (4) header arguments
 138    "\\([^\n]*\\)\n"
 139    ;; (5) body
 140    "\\([^\000]*?\n\\)?[ \t]*#\\+end_src")
 141   "Regexp used to identify code blocks.")
 142
 143 (defvar org-babel-inline-src-block-regexp
 144   (concat
 145    ;; (1) replacement target (2) lang
 146    "\\(?:^\\|[^-[:alnum:]]\\)\\(src_\\([^ \f\t\n\r\v]+\\)"
 147    ;; (3,4) (unused, headers)
 148    "\\(\\|\\[\\(.*?\\)\\]\\)"
 149    ;; (5) body
 150    "{\\([^\f\n\r\v]+?\\)}\\)")
 151   "Regexp used to identify inline src-blocks.")
 152
 153 (defun org-babel-get-header (params key &optional others)
 154   "Select only header argument of type KEY from a list.
 155 Optional argument OTHERS indicates that only the header that do
 156 not match KEY should be returned."
 157   (delq nil
 158         (mapcar
 159          (lambda (p) (when (funcall (if others #'not #'identity) (eq (car p) key)) p))
 160          params)))
 161
 162 (defun org-babel-get-inline-src-block-matches()
 163   "Set match data if within body of an inline source block.
 164 Returns non-nil if match-data set"
 165   (let ((src-at-0-p (save-excursion
 166                       (beginning-of-line 1)
 167                       (string= "src" (thing-at-point 'word))))
 168         (first-line-p (= 1 (line-number-at-pos)))
 169         (orig (point)))
 170     (let ((search-for (cond ((and src-at-0-p first-line-p  "src_"))
 171                             (first-line-p "[ \t]src_")
 172                             (t "[ \f\t\n\r\v]src_")))
 173           (lower-limit (if first-line-p
 174                            nil
 175                          (- (point-at-bol) 1))))
 176       (save-excursion
 177         (when (or (and src-at-0-p (bobp))
 178                   (and (re-search-forward "}" (point-at-eol) t)
 179                        (re-search-backward search-for lower-limit t)
 180                        (> orig (point))))
 181           (when (looking-at org-babel-inline-src-block-regexp)
 182             t ))))))
 183
 184 (defun org-babel-get-lob-one-liner-matches()
 185   "Set match data if on line of an lob one liner.
 186 Returns non-nil if match-data set"
 187
 188   (save-excursion
 189     (unless (= (point) (point-at-bol)) ;; move before inline block
 190       (re-search-backward "[ \f\t\n\r\v]" nil t))
 191     (if (looking-at org-babel-inline-lob-one-liner-regexp)
 192         t
 193       nil)))
 194
 195 (defun org-babel-get-src-block-info (&optional light)
 196   "Get information on the current source block.
 197
 198 Optional argument LIGHT does not resolve remote variable
 199 references; a process which could likely result in the execution
 200 of other code blocks.
 201
 202 Returns a list
 203  (language body header-arguments-alist switches name indent)."
 204   (let ((case-fold-search t) head info name indent)
 205     ;; full code block
 206     (if (setq head (org-babel-where-is-src-block-head))
 207         (save-excursion
 208           (goto-char head)
 209           (setq info (org-babel-parse-src-block-match))
 210           (setq indent (car (last info)))
 211           (setq info (butlast info))
 212           (while (and (forward-line -1)
 213                       (looking-at org-babel-multi-line-header-regexp))
 214             (setf (nth 2 info)
 215                   (org-babel-merge-params
 216                    (nth 2 info)
 217                    (org-babel-parse-header-arguments (match-string 1)))))
 218           (when (looking-at org-babel-src-name-w-name-regexp)
 219             (setq name (org-babel-clean-text-properties (match-string 4)))
 220             (when (match-string 6)
 221               (setf (nth 2 info) ;; merge functional-syntax vars and header-args
 222                     (org-babel-merge-params
 223                      (mapcar
 224                       (lambda (ref) (cons :var ref))
 225                       (mapcar
 226                        (lambda (var) ;; check that each variable is initialized
 227                          (if (string-match ".+=.+" var)
 228                              var
 229                            (error
 230                             "variable \"%s\"%s must be assigned a default value"
 231                             var (if name (format " in block \"%s\"" name) ""))))
 232                        (org-babel-ref-split-args (match-string 6))))
 233                      (nth 2 info))))))
 234       ;; inline source block
 235       (when (org-babel-get-inline-src-block-matches)
 236         (setq info (org-babel-parse-inline-src-block-match))))
 237     ;; resolve variable references and add summary parameters
 238     (when (and info (not light))
 239       (setf (nth 2 info) (org-babel-process-params (nth 2 info))))
 240     (when info (append info (list name indent)))))
 241
 242 (defun org-babel-confirm-evaluate (info)
 243   "Confirm evaluation of the code block INFO.
 244 This behavior can be suppressed by setting the value of
 245 `org-confirm-babel-evaluate' to nil, in which case all future
 246 interactive code block evaluations will proceed without any
 247 confirmation from the user.
 248
 249 Note disabling confirmation may result in accidental evaluation
 250 of potentially harmful code."
 251   (let* ((eval (or (cdr (assoc :eval (nth 2 info)))
 252                    (when (assoc :noeval (nth 2 info)) "no")))
 253          (query (cond ((equal eval "query") t)
 254                       ((functionp org-confirm-babel-evaluate)
 255                        (funcall org-confirm-babel-evaluate
 256                                 (nth 0 info) (nth 1 info)))
 257                       (t org-confirm-babel-evaluate))))
 258     (if (or (equal eval "never") (equal eval "no")
 259             (and query
 260                  (not (yes-or-no-p
 261                        (format "Evaluate this%scode block%son your system? "
 262                                (if info (format " %s " (nth 0 info)) " ")
 263                                (if (nth 4 info)
 264                                    (format " (%s) " (nth 4 info)) " "))))))
 265         (prog1 nil (message "Evaluation %s"
 266                             (if (or (equal eval "never") (equal eval "no"))
 267                                 "Disabled" "Aborted")))
 268       t)))
 269
 270 ;;;###autoload
 271 (defun org-babel-execute-safely-maybe ()
 272   (unless org-babel-no-eval-on-ctrl-c-ctrl-c
 273     (org-babel-execute-maybe)))
 274
 275 (add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-execute-safely-maybe)
 276
 277 ;;;###autoload
 278 (defun org-babel-execute-maybe ()
 279   (interactive)
 280   (or (org-babel-execute-src-block-maybe)
 281       (org-babel-lob-execute-maybe)))
 282
 283 (defun org-babel-execute-src-block-maybe ()
 284   "Conditionally execute a source block.
 285 Detect if this is context for a Babel src-block and if so
 286 then run `org-babel-execute-src-block'."
 287   (interactive)
 288   (let ((info (org-babel-get-src-block-info)))
 289     (if info
 290         (progn (org-babel-eval-wipe-error-buffer)
 291                (org-babel-execute-src-block current-prefix-arg info) t) nil)))
 292
 293 ;;;###autoload
 294 (defun org-babel-view-src-block-info ()
 295   "Display information on the current source block.
 296 This includes header arguments, language and name, and is largely
 297 a window into the `org-babel-get-src-block-info' function."
 298   (interactive)
 299   (let ((info (org-babel-get-src-block-info 'light)))
 300     (flet ((full (it) (> (length it) 0))
 301            (printf (fmt &rest args) (princ (apply #'format fmt args))))
 302       (when info
 303         (with-help-window (help-buffer)
 304           (let ((name        (nth 4 info))
 305                 (lang        (nth 0 info))
 306                 (switches    (nth 3 info))
 307                 (header-args (nth 2 info)))
 308             (when name            (printf "Name: %s\n"     name))
 309             (when lang            (printf "Lang: %s\n"     lang))
 310             (when (full switches) (printf "Switches: %s\n" switches))
 311             (printf "Header Arguments:\n")
 312             (dolist (pair (sort header-args
 313                                 (lambda (a b) (string< (symbol-name (car a))
 314                                                   (symbol-name (car b))))))
 315               (when (full (cdr pair))
 316                 (printf "\t%S%s\t%s\n"
 317                         (car pair)
 318                         (if (> (length (format "%S" (car pair))) 7) "" "\t")
 319                         (cdr pair))))))))))
 320
 321 ;;;###autoload
 322 (defun org-babel-expand-src-block-maybe ()
 323   "Conditionally expand a source block.
 324 Detect if this is context for a org-babel src-block and if so
 325 then run `org-babel-expand-src-block'."
 326   (interactive)
 327   (let ((info (org-babel-get-src-block-info)))
 328     (if info
 329         (progn (org-babel-expand-src-block current-prefix-arg info) t)
 330       nil)))
 331
 332 ;;;###autoload
 333 (defun org-babel-load-in-session-maybe ()
 334   "Conditionally load a source block in a session.
 335 Detect if this is context for a org-babel src-block and if so
 336 then run `org-babel-load-in-session'."
 337   (interactive)
 338   (let ((info (org-babel-get-src-block-info)))
 339     (if info
 340         (progn (org-babel-load-in-session current-prefix-arg info) t)
 341       nil)))
 342
 343 (add-hook 'org-metaup-hook 'org-babel-load-in-session-maybe)
 344
 345 ;;;###autoload
 346 (defun org-babel-pop-to-session-maybe ()
 347   "Conditionally pop to a session.
 348 Detect if this is context for a org-babel src-block and if so
 349 then run `org-babel-pop-to-session'."
 350   (interactive)
 351   (let ((info (org-babel-get-src-block-info)))
 352     (if info (progn (org-babel-pop-to-session current-prefix-arg info) t) nil)))
 353
 354 (add-hook 'org-metadown-hook 'org-babel-pop-to-session-maybe)
 355
 356 (defconst org-babel-header-arg-names
 357   '(cache cmdline colnames dir exports file noweb results
 358     session tangle var eval noeval comments no-expand shebang
 359     padline noweb-ref)
 360   "Common header arguments used by org-babel.
 361 Note that individual languages may define their own language
 362 specific header arguments as well.")
 363
 364 (defvar org-babel-default-header-args
 365   '((:session . "none") (:results . "replace") (:exports . "code")
 366     (:cache . "no") (:noweb . "no") (:hlines . "no") (:tangle . "no")
 367     (:padnewline . "yes"))
 368   "Default arguments to use when evaluating a source block.")
 369
 370 (defvar org-babel-default-inline-header-args
 371   '((:session . "none") (:results . "replace") (:exports . "results"))
 372   "Default arguments to use when evaluating an inline source block.")
 373
 374 (defvar org-babel-data-names '("TBLNAME" "RESNAME" "RESULTS" "DATA"))
 375
 376 (defvar org-babel-result-regexp
 377   (concat "^[ \t]*#\\+"
 378           (regexp-opt org-babel-data-names t)
 379           "\\(\\[\\([[:alnum:]]+\\)\\]\\)?\\:[ \t]*")
 380   "Regular expression used to match result lines.
 381 If the results are associated with a hash key then the hash will
 382 be saved in the second match data.")
 383
 384 (defvar org-babel-result-w-name-regexp
 385   (concat org-babel-result-regexp
 386           "\\([^ ()\f\t\n\r\v]+\\)\\(\(\\(.*\\)\)\\|\\)"))
 387
 388 (defvar org-babel-min-lines-for-block-output 10
 389   "The minimum number of lines for block output.
 390 If number of lines of output is equal to or exceeds this
 391 value, the output is placed in a #+begin_example...#+end_example
 392 block. Otherwise the output is marked as literal by inserting
 393 colons at the starts of the lines. This variable only takes
 394 effect if the :results output option is in effect.")
 395
 396 (defvar org-babel-noweb-error-langs nil
 397   "Languages for which Babel will raise literate programming errors.
 398 List of languages for which errors should be raised when the
 399 source code block satisfying a noweb reference in this language
 400 can not be resolved.")
 401
 402 (defvar org-babel-hash-show 4
 403   "Number of initial characters to show of a hidden results hash.")
 404
 405 (defvar org-babel-after-execute-hook nil
 406   "Hook for functions to be called after `org-babel-execute-src-block'")
 407 (defun org-babel-named-src-block-regexp-for-name (name)
 408   "This generates a regexp used to match a src block named NAME."
 409   (concat org-babel-src-name-regexp (regexp-quote name) "[ \t\n]*"
 410           (substring org-babel-src-block-regexp 1)))
 411
 412 ;;; functions
 413 (defvar call-process-region)
 414 ;;;###autoload
 415
 416 (defun org-babel-execute-src-block (&optional arg info params)
 417   "Execute the current source code block.
 418 Insert the results of execution into the buffer.  Source code
 419 execution and the collection and formatting of results can be
 420 controlled through a variety of header arguments.
 421
 422 With prefix argument ARG, force re-execution even if a an
 423 existing result cached in the buffer would otherwise have been
 424 returned.
 425
 426 Optionally supply a value for INFO in the form returned by
 427 `org-babel-get-src-block-info'.
 428
 429 Optionally supply a value for PARAMS which will be merged with
 430 the header arguments specified at the front of the source code
 431 block."
 432   (interactive)
 433   (let ((info (or info (org-babel-get-src-block-info))))
 434     (when (org-babel-confirm-evaluate info)
 435       (let* ((lang (nth 0 info))
 436              (params (if params
 437                          (org-babel-process-params
 438                           (org-babel-merge-params (nth 2 info) params))
 439                        (nth 2 info)))
 440              (cache? (and (not arg) (cdr (assoc :cache params))
 441                           (string= "yes" (cdr (assoc :cache params)))))
 442              (result-params (cdr (assoc :result-params params)))
 443              (new-hash (when cache? (org-babel-sha1-hash info)))
 444              (old-hash (when cache? (org-babel-current-result-hash)))
 445              (body (setf (nth 1 info)
 446                          (let ((noweb (cdr (assoc :noweb params))))
 447                            (if (and noweb
 448                                     (or (string= "yes" noweb)
 449                                         (string= "tangle" noweb)))
 450                                (org-babel-expand-noweb-references info)
 451                              (nth 1 info)))))
 452              (dir (cdr (assoc :dir params)))
 453              (default-directory
 454                (or (and dir (file-name-as-directory dir)) default-directory))
 455              (org-babel-call-process-region-original
 456               (if (boundp 'org-babel-call-process-region-original)
 457                   org-babel-call-process-region-original
 458                 (symbol-function 'call-process-region)))
 459              (indent (car (last info)))
 460              result cmd)
 461         (unwind-protect
 462             (flet ((call-process-region (&rest args)
 463                     (apply 'org-babel-tramp-handle-call-process-region args)))
 464               (flet ((lang-check (f)
 465                        (let ((f (intern (concat "org-babel-execute:" f))))
 466                          (when (fboundp f) f))))
 467                 (setq cmd
 468                       (or (lang-check lang)
 469                           (lang-check (symbol-name
 470                                        (cdr (assoc lang org-src-lang-modes))))
 471                           (error "No org-babel-execute function for %s!" lang))))
 472               (if (and (not arg) new-hash (equal new-hash old-hash))
 473                   (save-excursion ;; return cached result
 474                     (goto-char (org-babel-where-is-src-block-result nil info))
 475                     (end-of-line 1) (forward-char 1)
 476                     (setq result (org-babel-read-result))
 477                     (message (replace-regexp-in-string
 478                               "%" "%%" (format "%S" result))) result)
 479                 (message "executing %s code block%s..."
 480                          (capitalize lang)
 481                          (if (nth 4 info) (format " (%s)" (nth 4 info)) ""))
 482                 (setq result
 483                       ((lambda (result)
 484                          (if (and (eq (cdr (assoc :result-type params)) 'value)
 485                                   (or (member "vector" result-params)
 486                                       (member "table" result-params))
 487                                   (not (listp result)))
 488                              (list (list result)) result))
 489                        (funcall cmd body params)))
 490                 ;; if non-empty result and :file then write to :file
 491                 (when (cdr (assoc :file params))
 492                   (when result
 493                     (with-temp-file (cdr (assoc :file params))
 494                       (insert
 495                        (org-babel-format-result
 496                         result (cdr (assoc :sep (nth 2 info)))))))
 497                   (setq result (cdr (assoc :file params))))
 498                 (org-babel-insert-result
 499                  result result-params info new-hash indent lang)
 500                 (run-hooks 'org-babel-after-execute-hook)
 501                 result))
 502           (setq call-process-region 'org-babel-call-process-region-original))))))
 503
 504 (defun org-babel-expand-body:generic (body params &optional var-lines)
 505   "Expand BODY with PARAMS.
 506 Expand a block of code with org-babel according to it's header
 507 arguments.  This generic implementation of body expansion is
 508 called for languages which have not defined their own specific
 509 org-babel-expand-body:lang function."
 510   (mapconcat #'identity (append var-lines (list body)) "\n"))
 511
 512 ;;;###autoload
 513 (defun org-babel-expand-src-block (&optional arg info params)
 514   "Expand the current source code block.
 515 Expand according to the source code block's header
 516 arguments and pop open the results in a preview buffer."
 517   (interactive)
 518   (let* ((info (or info (org-babel-get-src-block-info)))
 519          (lang (nth 0 info))
 520          (params (setf (nth 2 info)
 521                        (sort (org-babel-merge-params (nth 2 info) params)
 522                              (lambda (el1 el2) (string< (symbol-name (car el1))
 523                                                    (symbol-name (car el2)))))))
 524          (body (setf (nth 1 info)
 525                      (if (and (cdr (assoc :noweb params))
 526                               (string= "yes" (cdr (assoc :noweb params))))
 527                          (org-babel-expand-noweb-references info) (nth 1 info))))
 528          (expand-cmd (intern (concat "org-babel-expand-body:" lang)))
 529          (assignments-cmd (intern (concat "org-babel-variable-assignments:"
 530                                           lang)))
 531          (expanded
 532           (if (fboundp expand-cmd) (funcall expand-cmd body params)
 533             (org-babel-expand-body:generic
 534              body params (and (fboundp assignments-cmd)
 535                               (funcall assignments-cmd params))))))
 536     (org-edit-src-code
 537      nil expanded (concat "*Org-Babel Preview " (buffer-name) "[ " lang " ]*"))))
 538
 539 (defun org-babel-edit-distance (s1 s2)
 540   "Return the edit (levenshtein) distance between strings S1 S2."
 541   (let* ((l1 (length s1))
 542          (l2 (length s2))
 543          (dist (map 'vector (lambda (_) (make-vector (1+ l2) nil))
 544                     (number-sequence 1 (1+ l1)))))
 545     (flet ((in (i j) (aref (aref dist i) j))
 546            (mmin (&rest lst) (apply #'min (remove nil lst))))
 547       (setf (aref (aref dist 0) 0) 0)
 548       (dolist (i (number-sequence 1 l1))
 549         (dolist (j (number-sequence 1 l2))
 550           (setf (aref (aref dist i) j)
 551                 (+ (if (equal (aref s1 (1- i)) (aref s2 (1- j))) 0 1)
 552                    (mmin (in (1- i) j) (in i (1- j)) (in (1- i) (1- j)))))))
 553       (in l1 l2))))
 554
 555 ;;;###autoload
 556 (defun org-babel-check-src-block ()
 557   "Check for misspelled header arguments in the current code block."
 558   (interactive)
 559   ;; TODO: report malformed code block
 560   ;; TODO: report incompatible combinations of header arguments
 561   ;; TODO: report uninitialized variables
 562   (let ((too-close 2)) ;; <- control closeness to report potential match
 563     (dolist (header (mapcar (lambda (arg) (substring (symbol-name (car arg)) 1))
 564                             (and (org-babel-where-is-src-block-head)
 565                                  (org-babel-parse-header-arguments
 566                                   (org-babel-clean-text-properties
 567                                    (match-string 4))))))
 568       (dolist (name (mapcar #'symbol-name org-babel-header-arg-names))
 569         (when (and (not (string= header name))
 570                    (<= (org-babel-edit-distance header name) too-close))
 571           (error "supplied header \"%S\" is suspiciously close to \"%S\""
 572                  header name))))
 573     (message "No suspicious header arguments found.")))
 574
 575 ;;;###autoload
 576 (defun org-babel-load-in-session (&optional arg info)
 577   "Load the body of the current source-code block.
 578 Evaluate the header arguments for the source block before
 579 entering the session.  After loading the body this pops open the
 580 session."
 581   (interactive)
 582   (let* ((info (or info (org-babel-get-src-block-info)))
 583          (lang (nth 0 info))
 584          (params (nth 2 info))
 585          (body (setf (nth 1 info)
 586                      (if (and (cdr (assoc :noweb params))
 587                               (string= "yes" (cdr (assoc :noweb params))))
 588                          (org-babel-expand-noweb-references info)
 589                        (nth 1 info))))
 590          (session (cdr (assoc :session params)))
 591          (dir (cdr (assoc :dir params)))
 592          (default-directory
 593            (or (and dir (file-name-as-directory dir)) default-directory))
 594          (cmd (intern (concat "org-babel-load-session:" lang))))
 595     (unless (fboundp cmd)
 596       (error "No org-babel-load-session function for %s!" lang))
 597     (pop-to-buffer (funcall cmd session body params))
 598     (end-of-line 1)))
 599
 600 ;;;###autoload
 601 (defun org-babel-initiate-session (&optional arg info)
 602   "Initiate session for current code block.
 603 If called with a prefix argument then resolve any variable
 604 references in the header arguments and assign these variables in
 605 the session. Copy the body of the code block to the kill ring."
 606   (interactive "P")
 607   (let* ((info (or info (org-babel-get-src-block-info (not arg))))
 608          (lang (nth 0 info))
 609          (body (nth 1 info))
 610          (params (nth 2 info))
 611          (session (cdr (assoc :session params)))
 612          (dir (cdr (assoc :dir params)))
 613          (default-directory
 614            (or (and dir (file-name-as-directory dir)) default-directory))
 615          (init-cmd (intern (format "org-babel-%s-initiate-session" lang)))
 616          (prep-cmd (intern (concat "org-babel-prep-session:" lang))))
 617     (if (and (stringp session) (string= session "none"))
 618         (error "This block is not using a session!"))
 619     (unless (fboundp init-cmd)
 620       (error "No org-babel-initiate-session function for %s!" lang))
 621     (with-temp-buffer (insert (org-babel-trim body))
 622                       (copy-region-as-kill (point-min) (point-max)))
 623     (when arg
 624       (unless (fboundp prep-cmd)
 625         (error "No org-babel-prep-session function for %s!" lang))
 626       (funcall prep-cmd session params))
 627     (funcall init-cmd session params)))
 628
 629 ;;;###autoload
 630 (defun org-babel-switch-to-session (&optional arg info)
 631   "Switch to the session of the current code block.
 632 Uses `org-babel-initiate-session' to start the session. If called
 633 with a prefix argument then this is passed on to
 634 `org-babel-initiate-session'."
 635   (interactive "P")
 636   (pop-to-buffer (org-babel-initiate-session arg info))
 637   (end-of-line 1))
 638
 639 (defalias 'org-babel-pop-to-session 'org-babel-switch-to-session)
 640
 641 ;;;###autoload
 642 (defun org-babel-switch-to-session-with-code (&optional arg info)
 643   "Switch to code buffer and display session."
 644   (interactive "P")
 645   (flet ((swap-windows
 646           ()
 647           (let ((other-window-buffer (window-buffer (next-window))))
 648             (set-window-buffer (next-window) (current-buffer))
 649             (set-window-buffer (selected-window) other-window-buffer))
 650           (other-window 1)))
 651     (let ((info (org-babel-get-src-block-info))
 652           (org-src-window-setup 'reorganize-frame))
 653       (save-excursion
 654         (org-babel-switch-to-session arg info))
 655       (org-edit-src-code))
 656     (swap-windows)))
 657
 658 (defmacro org-babel-do-in-edit-buffer (&rest body)
 659   "Evaluate BODY in edit buffer if there is a code block at point.
 660 Return t if a code block was found at point, nil otherwise."
 661   `(let ((org-src-window-setup 'switch-invisibly))
 662      (when (and (org-babel-where-is-src-block-head)
 663                 (org-edit-src-code nil nil nil))
 664        (unwind-protect (progn ,@body)
 665          (if (org-bound-and-true-p org-edit-src-from-org-mode)
 666              (org-edit-src-exit)))
 667        t)))
 668 (def-edebug-spec org-babel-do-in-edit-buffer (body))
 669
 670 (defun org-babel-do-key-sequence-in-edit-buffer (key)
 671   "Read key sequence and execute the command in edit buffer.
 672 Enter a key sequence to be executed in the language major-mode
 673 edit buffer. For example, TAB will alter the contents of the
 674 Org-mode code block according to the effect of TAB in the
 675 language major-mode buffer. For languages that support
 676 interactive sessions, this can be used to send code from the Org
 677 buffer to the session for evaluation using the native major-mode
 678 evaluation mechanisms."
 679   (interactive "kEnter key-sequence to execute in edit buffer: ")
 680   (org-babel-do-in-edit-buffer
 681    (call-interactively
 682     (key-binding (or key (read-key-sequence nil))))))
 683
 684 (defvar org-bracket-link-regexp)
 685 ;;;###autoload
 686 (defun org-babel-open-src-block-result (&optional re-run)
 687   "If `point' is on a src block then open the results of the
 688 source code block, otherwise return nil.  With optional prefix
 689 argument RE-RUN the source-code block is evaluated even if
 690 results already exist."
 691   (interactive "P")
 692   (let ((info (org-babel-get-src-block-info)))
 693     (when info
 694       (save-excursion
 695         ;; go to the results, if there aren't any then run the block
 696         (goto-char (or (and (not re-run) (org-babel-where-is-src-block-result))
 697                        (progn (org-babel-execute-src-block)
 698                               (org-babel-where-is-src-block-result))))
 699         (end-of-line 1)
 700         (while (looking-at "[\n\r\t\f ]") (forward-char 1))
 701         ;; open the results
 702         (if (looking-at org-bracket-link-regexp)
 703             ;; file results
 704             (org-open-at-point)
 705           (let ((r (org-babel-format-result
 706                     (org-babel-read-result) (cdr (assoc :sep (nth 2 info))))))
 707             (pop-to-buffer (get-buffer-create "*Org-Babel Results*"))
 708             (delete-region (point-min) (point-max))
 709             (insert r)))
 710         t))))
 711
 712 ;;;###autoload
 713 (defmacro org-babel-map-src-blocks (file &rest body)
 714   "Evaluate BODY forms on each source-block in FILE.
 715 If FILE is nil evaluate BODY forms on source blocks in current
 716 buffer.  During evaluation of BODY the following local variables
 717 are set relative to the currently matched code block.
 718
 719 full-block ------- string holding the entirety of the code block
 720 beg-block -------- point at the beginning of the code block
 721 end-block -------- point at the end of the matched code block
 722 lang ------------- string holding the language of the code block
 723 beg-lang --------- point at the beginning of the lang
 724 end-lang --------- point at the end of the lang
 725 switches --------- string holding the switches
 726 beg-switches ----- point at the beginning of the switches
 727 end-switches ----- point at the end of the switches
 728 header-args ------ string holding the header-args
 729 beg-header-args -- point at the beginning of the header-args
 730 end-header-args -- point at the end of the header-args
 731 body ------------- string holding the body of the code block
 732 beg-body --------- point at the beginning of the body
 733 end-body --------- point at the end of the body"
 734   (declare (indent 1))
 735   (let ((tempvar (make-symbol "file")))
 736     `(let* ((,tempvar ,file)
 737             (visited-p (or (null ,tempvar)
 738                            (get-file-buffer (expand-file-name ,tempvar))))
 739             (point (point)) to-be-removed)
 740        (save-window-excursion
 741          (when ,tempvar (find-file ,tempvar))
 742          (setq to-be-removed (current-buffer))
 743          (goto-char (point-min))
 744          (while (re-search-forward org-babel-src-block-regexp nil t)
 745            (goto-char (match-beginning 0))
 746            (let ((full-block (match-string 0))
 747                  (beg-block (match-beginning 0))
 748                  (end-block (match-end 0))
 749                  (lang (match-string 2))
 750                  (beg-lang (match-beginning 2))
 751                  (end-lang (match-end 2))
 752                  (switches (match-string 3))
 753                  (beg-switches (match-beginning 3))
 754                  (end-switches (match-end 3))
 755                  (header-args (match-string 4))
 756                  (beg-header-args (match-beginning 4))
 757                  (end-header-args (match-end 4))
 758                  (body (match-string 5))
 759                  (beg-body (match-beginning 5))
 760                  (end-body (match-end 5)))
 761              ,@body
 762              (goto-char end-block))))
 763        (unless visited-p (kill-buffer to-be-removed))
 764        (goto-char point))))
 765 (def-edebug-spec org-babel-map-src-blocks (form body))
 766
 767 ;;;###autoload
 768 (defmacro org-babel-map-inline-src-blocks (file &rest body)
 769   "Evaluate BODY forms on each inline source-block in FILE.
 770 If FILE is nil evaluate BODY forms on source blocks in current
 771 buffer."
 772   (declare (indent 1))
 773   (let ((tempvar (make-symbol "file")))
 774     `(let* ((,tempvar ,file)
 775             (visited-p (or (null ,tempvar)
 776                            (get-file-buffer (expand-file-name ,tempvar))))
 777             (point (point)) to-be-removed)
 778        (save-window-excursion
 779          (when ,tempvar (find-file ,tempvar))
 780          (setq to-be-removed (current-buffer))
 781          (goto-char (point-min))
 782          (while (re-search-forward org-babel-inline-src-block-regexp nil t)
 783            (goto-char (match-beginning 1))
 784            (save-match-data ,@body)
 785            (goto-char (match-end 0))))
 786        (unless visited-p (kill-buffer to-be-removed))
 787        (goto-char point))))
 788 (def-edebug-spec org-babel-map-inline-src-blocks (form body))
 789
 790 ;;;###autoload
 791 (defun org-babel-execute-buffer (&optional arg)
 792   "Execute source code blocks in a buffer.
 793 Call `org-babel-execute-src-block' on every source block in
 794 the current buffer."
 795   (interactive "P")
 796   (org-babel-eval-wipe-error-buffer)
 797   (org-save-outline-visibility t
 798     (org-babel-map-src-blocks nil
 799       (org-babel-execute-src-block arg))
 800     (org-babel-map-inline-src-blocks nil
 801       (org-babel-execute-src-block arg))))
 802
 803 ;;;###autoload
 804 (defun org-babel-execute-subtree (&optional arg)
 805   "Execute source code blocks in a subtree.
 806 Call `org-babel-execute-src-block' on every source block in
 807 the current subtree."
 808   (interactive "P")
 809   (save-restriction
 810     (save-excursion
 811       (org-narrow-to-subtree)
 812       (org-babel-execute-buffer arg)
 813       (widen))))
 814
 815 ;;;###autoload
 816 (defun org-babel-sha1-hash (&optional info)
 817   "Generate an sha1 hash based on the value of info."
 818   (interactive)
 819   (let ((print-level nil)
 820         (info (or info (org-babel-get-src-block-info))))
 821     (setf (nth 2 info)
 822           (sort (copy-sequence (nth 2 info))
 823                 (lambda (a b) (string< (car a) (car b)))))
 824     (labels ((rm (lst)
 825                  (dolist (p '("replace" "silent" "append" "prepend"))
 826                    (setq lst (remove p lst)))
 827                  lst)
 828              (norm (arg)
 829                    (let ((v (if (and (listp (cdr arg)) (null (cddr arg)))
 830                                 (copy-sequence (cdr arg))
 831                               (cdr arg))))
 832                      (when (and v (not (and (sequencep v)
 833                                             (not (consp v))
 834                                             (= (length v) 0))))
 835                        (cond
 836                         ((and (listp v) ; lists are sorted
 837                               (member (car arg) '(:result-params)))
 838                          (sort (rm v) #'string<))
 839                         ((and (stringp v) ; strings are sorted
 840                               (member (car arg) '(:results :exports)))
 841                          (mapconcat #'identity (sort (rm (split-string v))
 842                                                      #'string<) " "))
 843                         (t v))))))
 844       ((lambda (hash)
 845          (when (org-called-interactively-p 'interactive) (message hash)) hash)
 846        (let ((it (format "%s-%s"
 847                          (mapconcat
 848                           #'identity
 849                           (delq nil (mapcar (lambda (arg)
 850                                               (let ((normalized (norm arg)))
 851                                                 (when normalized
 852                                                   (format "%S" normalized))))
 853                                             (nth 2 info))) ":")
 854                          (nth 1 info))))
 855          (sha1 it))))))
 856
 857 (defun org-babel-current-result-hash ()
 858   "Return the in-buffer hash associated with INFO."
 859   (org-babel-where-is-src-block-result)
 860   (org-babel-clean-text-properties (match-string 3)))
 861
 862 (defun org-babel-hide-hash ()
 863   "Hide the hash in the current results line.
 864 Only the initial `org-babel-hash-show' characters of the hash
 865 will remain visible."
 866   (add-to-invisibility-spec '(org-babel-hide-hash . t))
 867   (save-excursion
 868     (when (and (re-search-forward org-babel-result-regexp nil t)
 869                (match-string 3))
 870       (let* ((start (match-beginning 3))
 871              (hide-start (+ org-babel-hash-show start))
 872              (end (match-end 3))
 873              (hash (match-string 3))
 874              ov1 ov2)
 875         (setq ov1 (make-overlay start hide-start))
 876         (setq ov2 (make-overlay hide-start end))
 877         (overlay-put ov2 'invisible 'org-babel-hide-hash)
 878         (overlay-put ov1 'babel-hash hash)))))
 879
 880 (defun org-babel-hide-all-hashes ()
 881   "Hide the hash in the current buffer.
 882 Only the initial `org-babel-hash-show' characters of each hash
 883 will remain visible.  This function should be called as part of
 884 the `org-mode-hook'."
 885   (save-excursion
 886     (while (re-search-forward org-babel-result-regexp nil t)
 887       (goto-char (match-beginning 0))
 888       (org-babel-hide-hash)
 889       (goto-char (match-end 0)))))
 890 (add-hook 'org-mode-hook 'org-babel-hide-all-hashes)
 891
 892 (defun org-babel-hash-at-point (&optional point)
 893   "Return the value of the hash at POINT.
 894 The hash is also added as the last element of the kill ring.
 895 This can be called with C-c C-c."
 896   (interactive)
 897   (let ((hash (car (delq nil (mapcar
 898                               (lambda (ol) (overlay-get ol 'babel-hash))
 899                               (overlays-at (or point (point))))))))
 900     (when hash (kill-new hash) (message hash))))
 901 (add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-hash-at-point)
 902
 903 (defun org-babel-result-hide-spec ()
 904   "Hide portions of results lines.
 905 Add `org-babel-hide-result' as an invisibility spec for hiding
 906 portions of results lines."
 907   (add-to-invisibility-spec '(org-babel-hide-result . t)))
 908 (add-hook 'org-mode-hook 'org-babel-result-hide-spec)
 909
 910 (defvar org-babel-hide-result-overlays nil
 911   "Overlays hiding results.")
 912
 913 (defun org-babel-result-hide-all ()
 914   "Fold all results in the current buffer."
 915   (interactive)
 916   (org-babel-show-result-all)
 917   (save-excursion
 918     (while (re-search-forward org-babel-result-regexp nil t)
 919       (save-excursion (goto-char (match-beginning 0))
 920                       (org-babel-hide-result-toggle-maybe)))))
 921
 922 (defun org-babel-show-result-all ()
 923   "Unfold all results in the current buffer."
 924   (mapc 'delete-overlay org-babel-hide-result-overlays)
 925   (setq org-babel-hide-result-overlays nil))
 926
 927 ;;;###autoload
 928 (defun org-babel-hide-result-toggle-maybe ()
 929   "Toggle visibility of result at point."
 930   (interactive)
 931   (let ((case-fold-search t))
 932     (if (save-excursion
 933           (beginning-of-line 1)
 934           (looking-at org-babel-result-regexp))
 935         (progn (org-babel-hide-result-toggle)
 936                t) ;; to signal that we took action
 937       nil))) ;; to signal that we did not
 938
 939 (defun org-babel-hide-result-toggle (&optional force)
 940   "Toggle the visibility of the current result."
 941   (interactive)
 942   (save-excursion
 943     (beginning-of-line)
 944     (if (re-search-forward org-babel-result-regexp nil t)
 945         (let ((start (progn (beginning-of-line 2) (- (point) 1)))
 946               (end (progn (goto-char (- (org-babel-result-end) 1)) (point)))
 947               ov)
 948           (if (memq t (mapcar (lambda (overlay)
 949                                 (eq (overlay-get overlay 'invisible)
 950                                     'org-babel-hide-result))
 951                               (overlays-at start)))
 952               (if (or (not force) (eq force 'off))
 953                   (mapc (lambda (ov)
 954                           (when (member ov org-babel-hide-result-overlays)
 955                             (setq org-babel-hide-result-overlays
 956                                   (delq ov org-babel-hide-result-overlays)))
 957                           (when (eq (overlay-get ov 'invisible)
 958                                     'org-babel-hide-result)
 959                             (delete-overlay ov)))
 960                         (overlays-at start)))
 961             (setq ov (make-overlay start end))
 962             (overlay-put ov 'invisible 'org-babel-hide-result)
 963             ;; make the block accessible to isearch
 964             (overlay-put
 965              ov 'isearch-open-invisible
 966              (lambda (ov)
 967                (when (member ov org-babel-hide-result-overlays)
 968                  (setq org-babel-hide-result-overlays
 969                        (delq ov org-babel-hide-result-overlays)))
 970                (when (eq (overlay-get ov 'invisible)
 971                          'org-babel-hide-result)
 972                  (delete-overlay ov))))
 973             (push ov org-babel-hide-result-overlays)))
 974       (error "Not looking at a result line"))))
 975
 976 ;; org-tab-after-check-for-cycling-hook
 977 (add-hook 'org-tab-first-hook 'org-babel-hide-result-toggle-maybe)
 978 ;; Remove overlays when changing major mode
 979 (add-hook 'org-mode-hook
 980           (lambda () (org-add-hook 'change-major-mode-hook
 981                                    'org-babel-show-result-all 'append 'local)))
 982
 983 (defvar org-file-properties)
 984 (defun org-babel-params-from-properties (&optional lang)
 985   "Retrieve parameters specified as properties.
 986 Return an association list of any source block params which
 987 may be specified in the properties of the current outline entry."
 988   (save-match-data
 989     (let (val sym)
 990       (delq nil
 991             (mapcar
 992              (lambda (header-arg)
 993                (and (setq val (org-entry-get (point) header-arg t))
 994                     (cons (intern (concat ":" header-arg))
 995                           (org-babel-read val))))
 996              (mapcar
 997               'symbol-name
 998               (append
 999                org-babel-header-arg-names
1000                (progn
1001                  (setq sym (intern (concat "org-babel-header-arg-names:" lang)))
1002                  (and (boundp sym) (eval sym))))))))))
1003
1004 (defun org-babel-params-from-buffer ()
1005   "Retrieve per-buffer parameters.
1006  Return an association list of any source block params which
1007 may be specified in the current buffer."
1008   (let (local-properties)
1009     (save-match-data
1010       (save-excursion
1011         (save-restriction
1012           (widen)
1013           (goto-char (point-min))
1014           (while (re-search-forward
1015                   (org-make-options-regexp (list "BABEL" "PROPERTIES")) nil t)
1016             (setq local-properties
1017                   (org-babel-merge-params
1018                    local-properties
1019                    (org-babel-parse-header-arguments
1020                     (org-match-string-no-properties 2)))))
1021           local-properties)))))
1022
1023 (defvar org-src-preserve-indentation)
1024 (defun org-babel-parse-src-block-match ()
1025   "Parse the results from a match of the `org-babel-src-block-regexp'."
1026   (let* ((block-indentation (length (match-string 1)))
1027          (lang (org-babel-clean-text-properties (match-string 2)))
1028          (lang-headers (intern (concat "org-babel-default-header-args:" lang)))
1029          (switches (match-string 3))
1030          (body (org-babel-clean-text-properties
1031                 (let* ((body (match-string 5))
1032                        (sub-length (- (length body) 1)))
1033                   (if (and (> sub-length 0)
1034                            (string= "\n" (substring body sub-length)))
1035                       (substring body 0 sub-length)
1036                     (or body "")))))
1037          (preserve-indentation (or org-src-preserve-indentation
1038                                    (string-match "-i\\>" switches))))
1039     (list lang
1040           ;; get block body less properties, protective commas, and indentation
1041           (with-temp-buffer
1042             (save-match-data
1043               (insert (org-babel-strip-protective-commas body))
1044               (unless preserve-indentation (org-do-remove-indentation))
1045               (buffer-string)))
1046           (org-babel-merge-params
1047            org-babel-default-header-args
1048            (org-babel-params-from-buffer)
1049            (org-babel-params-from-properties lang)
1050            (if (boundp lang-headers) (eval lang-headers) nil)
1051            (org-babel-parse-header-arguments
1052             (org-babel-clean-text-properties (or (match-string 4) ""))))
1053           switches
1054           block-indentation)))
1055
1056 (defun org-babel-parse-inline-src-block-match ()
1057   "Parse the results from a match of the `org-babel-inline-src-block-regexp'."
1058   (let* ((lang (org-babel-clean-text-properties (match-string 2)))
1059          (lang-headers (intern (concat "org-babel-default-header-args:" lang))))
1060     (list lang
1061           (org-babel-strip-protective-commas
1062            (org-babel-clean-text-properties (match-string 5)))
1063           (org-babel-merge-params
1064            org-babel-default-inline-header-args
1065            (org-babel-params-from-buffer)
1066            (org-babel-params-from-properties lang)
1067            (if (boundp lang-headers) (eval lang-headers) nil)
1068            (org-babel-parse-header-arguments
1069             (org-babel-clean-text-properties (or (match-string 4) "")))))))
1070
1071 (defun org-babel-parse-header-arguments (arg-string)
1072   "Parse a string of header arguments returning an alist."
1073   (when (> (length arg-string) 0)
1074     (delq nil
1075           (mapcar
1076            (lambda (arg)
1077              (if (string-match
1078                   "\\([^ \f\t\n\r\v]+\\)[ \f\t\n\r\v]+\\([^ \f\t\n\r\v]+.*\\)"
1079                   arg)
1080                  (cons (intern (match-string 1 arg))
1081                        (org-babel-read (org-babel-chomp (match-string 2 arg))))
1082                (cons (intern (org-babel-chomp arg)) nil)))
1083            (let ((balance 0) (partial nil) (lst nil) (last 0))
1084              (mapc (lambda (ch)  ; split on [] balanced instances of [ \t]:
1085                      (setq balance (+ balance
1086                                       (cond ((equal 91 ch) 1)
1087                                             ((equal 93 ch) -1)
1088                                             (t 0))))
1089                      (setq partial (cons ch partial))
1090                      (when (and (= ch 58) (= balance 0)
1091                                 (or (= last 32) (= last 9)))
1092                        (setq lst (cons (apply #'string (nreverse (cddr partial)))
1093                                        lst))
1094                        (setq partial (list ch)))
1095                      (setq last ch))
1096                    (string-to-list arg-string))
1097              (nreverse (cons (apply #'string (nreverse partial)) lst)))))))
1098
1099 (defun org-babel-process-params (params)
1100   "Expand variables in PARAMS and add summary parameters."
1101   (let* ((vars-and-names (org-babel-disassemble-tables
1102                           (mapcar (lambda (el)
1103                                     (if (consp (cdr el))
1104                                         (cdr el) (org-babel-ref-parse (cdr el))))
1105                                   (org-babel-get-header params :var))
1106                           (cdr (assoc :hlines params))
1107                           (cdr (assoc :colnames params))
1108                           (cdr (assoc :rownames params))))
1109          (raw-result (or (cdr (assoc :results params)) ""))
1110          (result-params (append
1111                          (split-string (if (stringp raw-result)
1112                                            raw-result
1113                                          (eval raw-result)))
1114                          (cdr (assoc :result-params params)))))
1115     (append
1116      (mapcar (lambda (var) (cons :var var)) (car vars-and-names))
1117      (list
1118       (cons :colname-names (or (cdr (assoc :colname-names params))
1119                                (cadr  vars-and-names)))
1120       (cons :rowname-names (or (cdr (assoc :rowname-names params))
1121                                (caddr vars-and-names)))
1122       (cons :result-params result-params)
1123       (cons :result-type  (cond ((member "output" result-params) 'output)
1124                                 ((member "value" result-params) 'value)
1125                                 (t 'value))))
1126      (org-babel-get-header params :var 'other))))
1127
1128 ;; row and column names
1129 (defun org-babel-del-hlines (table)
1130   "Remove all 'hlines from TABLE."
1131   (remove 'hline table))
1132
1133 (defun org-babel-get-colnames (table)
1134   "Return the column names of TABLE.
1135 Return a cons cell, the `car' of which contains the TABLE less
1136 colnames, and the `cdr' of which contains a list of the column
1137 names."
1138   (if (equal 'hline (nth 1 table))
1139       (cons (cddr table) (car table))
1140     (cons (cdr table) (car table))))
1141
1142 (defun org-babel-get-rownames (table)
1143   "Return the row names of TABLE.
1144 Return a cons cell, the `car' of which contains the TABLE less
1145 colnames, and the `cdr' of which contains a list of the column
1146 names.  Note: this function removes any hlines in TABLE."
1147   (flet ((trans (table) (apply #'mapcar* #'list table)))
1148     (let* ((width (apply 'max
1149                          (mapcar (lambda (el) (if (listp el) (length el) 0)) table)))
1150            (table (trans (mapcar (lambda (row)
1151                                    (if (not (equal row 'hline))
1152                                        row
1153                                      (setq row '())
1154                                      (dotimes (n width)
1155                                        (setq row (cons 'hline row)))
1156                                      row))
1157                                  table))))
1158       (cons (mapcar (lambda (row) (if (equal (car row) 'hline) 'hline row))
1159                     (trans (cdr table)))
1160             (remove 'hline (car table))))))
1161
1162 (defun org-babel-put-colnames (table colnames)
1163   "Add COLNAMES to TABLE if they exist."
1164   (if colnames (apply 'list colnames 'hline table) table))
1165
1166 (defun org-babel-put-rownames (table rownames)
1167   "Add ROWNAMES to TABLE if they exist."
1168   (if rownames
1169       (mapcar (lambda (row)
1170                 (if (listp row)
1171                     (cons (or (pop rownames) "") row)
1172                   row)) table)
1173     table))
1174
1175 (defun org-babel-pick-name (names selector)
1176   "Select one out of an alist of row or column names.
1177 SELECTOR can be either a list of names in which case those names
1178 will be returned directly, or an index into the list NAMES in
1179 which case the indexed names will be return."
1180   (if (listp selector)
1181       selector
1182     (when names
1183       (if (and selector (symbolp selector) (not (equal t selector)))
1184           (cdr (assoc selector names))
1185         (if (integerp selector)
1186             (nth (- selector 1) names)
1187           (cdr (car (last names))))))))
1188
1189 (defun org-babel-disassemble-tables (vars hlines colnames rownames)
1190   "Parse tables for further processing.
1191 Process the variables in VARS according to the HLINES,
1192 ROWNAMES and COLNAMES header arguments.  Return a list consisting
1193 of the vars, cnames and rnames."
1194   (let (cnames rnames)
1195     (list
1196      (mapcar
1197       (lambda (var)
1198         (when (listp (cdr var))
1199           (when (and (not (equal colnames "no"))
1200                      (or colnames (and (equal (nth 1 (cdr var)) 'hline)
1201                                        (not (member 'hline (cddr (cdr var)))))))
1202             (let ((both (org-babel-get-colnames (cdr var))))
1203               (setq cnames (cons (cons (car var) (cdr both))
1204                                  cnames))
1205               (setq var (cons (car var) (car both)))))
1206           (when (and rownames (not (equal rownames "no")))
1207             (let ((both (org-babel-get-rownames (cdr var))))
1208               (setq rnames (cons (cons (car var) (cdr both))
1209                                  rnames))
1210               (setq var (cons (car var) (car both)))))
1211           (when (and hlines (not (equal hlines "yes")))
1212             (setq var (cons (car var) (org-babel-del-hlines (cdr var))))))
1213         var)
1214       vars)
1215      cnames rnames)))
1216
1217 (defun org-babel-reassemble-table (table colnames rownames)
1218   "Add column and row names to a table.
1219 Given a TABLE and set of COLNAMES and ROWNAMES add the names
1220 to the table for reinsertion to org-mode."
1221   (if (listp table)
1222       ((lambda (table)
1223          (if (and colnames (listp (car table)) (= (length (car table))
1224                                                   (length colnames)))
1225              (org-babel-put-colnames table colnames) table))
1226        (if (and rownames (= (length table) (length rownames)))
1227            (org-babel-put-rownames table rownames) table))
1228     table))
1229
1230 (defun org-babel-where-is-src-block-head ()
1231   "Find where the current source block begins.
1232 Return the point at the beginning of the current source
1233 block.  Specifically at the beginning of the #+BEGIN_SRC line.
1234 If the point is not on a source block then return nil."
1235   (let ((initial (point)) top bottom)
1236     (or
1237      (save-excursion ;; on a source name line or a #+header line
1238        (beginning-of-line 1)
1239        (and (or (looking-at org-babel-src-name-regexp)
1240                 (looking-at org-babel-multi-line-header-regexp))
1241             (progn
1242               (while (and (forward-line 1)
1243                           (looking-at org-babel-multi-line-header-regexp)))
1244               (looking-at org-babel-src-block-regexp))
1245             (point)))
1246      (save-excursion ;; on a #+begin_src line
1247        (beginning-of-line 1)
1248        (and (looking-at org-babel-src-block-regexp)
1249             (point)))
1250      (save-excursion ;; inside a src block
1251        (and
1252         (re-search-backward "^[ \t]*#\\+begin_src" nil t) (setq top (point))
1253         (re-search-forward "^[ \t]*#\\+end_src" nil t) (setq bottom (point))
1254         (< top initial) (< initial bottom)
1255         (progn (goto-char top) (beginning-of-line 1)
1256                (looking-at org-babel-src-block-regexp))
1257         (point))))))
1258
1259 ;;;###autoload
1260 (defun org-babel-goto-src-block-head ()
1261   "Go to the beginning of the current code block."
1262   (interactive)
1263   ((lambda (head)
1264      (if head (goto-char head) (error "not currently in a code block")))
1265    (org-babel-where-is-src-block-head)))
1266
1267 ;;;###autoload
1268 (defun org-babel-goto-named-src-block (name)
1269   "Go to a named source-code block."
1270   (interactive
1271    (let ((completion-ignore-case t))
1272      (list (org-icompleting-read "source-block name: "
1273                                  (org-babel-src-block-names) nil t))))
1274   (let ((point (org-babel-find-named-block name)))
1275     (if point
1276         ;; taken from `org-open-at-point'
1277         (progn (goto-char point) (org-show-context))
1278       (message "source-code block '%s' not found in this buffer" name))))
1279
1280 (defun org-babel-find-named-block (name)
1281   "Find a named source-code block.
1282 Return the location of the source block identified by source
1283 NAME, or nil if no such block exists. Set match data according to
1284 org-babel-named-src-block-regexp."
1285   (save-excursion
1286     (let ((case-fold-search t)
1287           (regexp (org-babel-named-src-block-regexp-for-name name)) msg)
1288       (goto-char (point-min))
1289       (when (or (re-search-forward regexp nil t)
1290                 (re-search-backward regexp nil t))
1291         (match-beginning 0)))))
1292
1293 (defun org-babel-src-block-names (&optional file)
1294   "Returns the names of source blocks in FILE or the current buffer."
1295   (save-excursion
1296     (when file (find-file file)) (goto-char (point-min))
1297     (let (names)
1298       (while (re-search-forward org-babel-src-name-w-name-regexp nil t)
1299         (setq names (cons (match-string 4) names)))
1300       names)))
1301
1302 ;;;###autoload
1303 (defun org-babel-goto-named-result (name)
1304   "Go to a named result."
1305   (interactive
1306    (let ((completion-ignore-case t))
1307      (list (org-icompleting-read "source-block name: "
1308                                  (org-babel-result-names) nil t))))
1309   (let ((point (org-babel-find-named-result name)))
1310     (if point
1311         ;; taken from `org-open-at-point'
1312         (progn (goto-char point) (org-show-context))
1313       (message "result '%s' not found in this buffer" name))))
1314
1315 (defun org-babel-find-named-result (name)
1316   "Find a named result.
1317 Return the location of the result named NAME in the current
1318 buffer or nil if no such result exists."
1319   (save-excursion
1320     (goto-char (point-min))
1321     (when (re-search-forward
1322            (concat org-babel-result-regexp
1323                    "[ \t]" (regexp-quote name) "[ \t\n\f\v\r]") nil t)
1324       (beginning-of-line 0) (point))))
1325
1326 (defun org-babel-result-names (&optional file)
1327   "Returns the names of results in FILE or the current buffer."
1328   (save-excursion
1329     (when file (find-file file)) (goto-char (point-min))
1330     (let (names)
1331       (while (re-search-forward org-babel-result-w-name-regexp nil t)
1332         (setq names (cons (match-string 4) names)))
1333       names)))
1334
1335 ;;;###autoload
1336 (defun org-babel-next-src-block (&optional arg)
1337   "Jump to the next source block.
1338 With optional prefix argument ARG, jump forward ARG many source blocks."
1339   (interactive "P")
1340   (when (looking-at org-babel-src-block-regexp) (forward-char 1))
1341   (condition-case nil
1342       (re-search-forward org-babel-src-block-regexp nil nil (or arg 1))
1343     (error (error "No further code blocks")))
1344   (goto-char (match-beginning 0)) (org-show-context))
1345
1346 ;;;###autoload
1347 (defun org-babel-previous-src-block (&optional arg)
1348   "Jump to the previous source block.
1349 With optional prefix argument ARG, jump backward ARG many source blocks."
1350   (interactive "P")
1351   (condition-case nil
1352       (re-search-backward org-babel-src-block-regexp nil nil (or arg 1))
1353     (error (error "No previous code blocks")))
1354   (goto-char (match-beginning 0)) (org-show-context))
1355
1356 (defvar org-babel-load-languages)
1357
1358 ;;;###autoload
1359 (defun org-babel-mark-block ()
1360   "Mark current src block"
1361   (interactive)
1362   ((lambda (head)
1363      (when head
1364        (save-excursion
1365          (goto-char head)
1366          (looking-at org-babel-src-block-regexp))
1367        (push-mark (match-end 5) nil t)
1368        (goto-char (match-beginning 5))))
1369    (org-babel-where-is-src-block-head)))
1370
1371 (defun org-babel-demarcate-block (&optional arg)
1372   "Wrap or split the code in the region or on the point.
1373 When called from inside of a code block the current block is
1374 split.  When called from outside of a code block a new code block
1375 is created.  In both cases if the region is demarcated and if the
1376 region is not active then the point is demarcated."
1377   (interactive "P")
1378   (let ((info (org-babel-get-src-block-info 'light))
1379         (headers (progn (org-babel-where-is-src-block-head)
1380                         (match-string 4)))
1381         (stars (concat (make-string (or (org-current-level) 1) ?*) " ")))
1382     (if info
1383         (mapc
1384          (lambda (place)
1385            (save-excursion
1386              (goto-char place)
1387              (let ((lang (nth 0 info))
1388                    (indent (make-string (nth 5 info) ? )))
1389                (when (string-match "^[[:space:]]*$"
1390                                    (buffer-substring (point-at-bol)
1391                                                      (point-at-eol)))
1392                  (delete-region (point-at-bol) (point-at-eol)))
1393                (insert (concat
1394                         (if (looking-at "^") "" "\n")
1395                         indent "#+end_src\n"
1396                         (if arg stars indent) "\n"
1397                         indent "#+begin_src " lang
1398                         (if (> (length headers) 1)
1399                             (concat " " headers) headers)
1400                         (if (looking-at "[\n\r]")
1401                             ""
1402                           (concat "\n" (make-string (current-column) ? )))))))
1403            (move-end-of-line 2))
1404          (sort (if (region-active-p) (list (mark) (point)) (list (point))) #'>))
1405       (let ((start (point))
1406             (lang (org-icompleting-read "Lang: "
1407                                         (mapcar (lambda (el) (symbol-name (car el)))
1408                                                 org-babel-load-languages)))
1409             (body (delete-and-extract-region
1410                    (if (region-active-p) (mark) (point)) (point))))
1411         (insert (concat (if (looking-at "^") "" "\n")
1412                         (if arg (concat stars "\n") "")
1413                         "#+begin_src " lang "\n"
1414                         body
1415                         (if (or (= (length body) 0)
1416                                 (string-match "[\r\n]$" body)) "" "\n")
1417                         "#+end_src\n"))
1418         (goto-char start) (move-end-of-line 1)))))
1419
1420 (defvar org-babel-lob-one-liner-regexp)
1421 (defvar org-babel-inline-lob-one-liner-regexp)
1422 (defun org-babel-where-is-src-block-result (&optional insert info hash indent)
1423   "Find where the current source block results begin.
1424 Return the point at the beginning of the result of the current
1425 source block.  Specifically at the beginning of the results line.
1426 If no result exists for this block then create a results line
1427 following the source block."
1428   (save-excursion
1429     (let* ((on-lob-line (save-excursion
1430                           (beginning-of-line 1)
1431                           (looking-at org-babel-lob-one-liner-regexp)))
1432            (inlinep (when (org-babel-get-inline-src-block-matches)
1433                         (match-end 0)))
1434            (name (if on-lob-line
1435                      (nth 0 (org-babel-lob-get-info))
1436                    (nth 4 (or info (org-babel-get-src-block-info 'light)))))
1437            (head (unless on-lob-line (org-babel-where-is-src-block-head)))
1438            found beg end)
1439       (when head (goto-char head))
1440       (setq
1441        found ;; was there a result (before we potentially insert one)
1442        (or
1443         inlinep
1444         (and
1445          ;; named results:
1446          ;; - return t if it is found, else return nil
1447          ;; - if it does not need to be rebuilt, then don't set end
1448          ;; - if it does need to be rebuilt then do set end
1449          name (setq beg (org-babel-find-named-result name))
1450          (prog1 beg
1451            (when (and hash (not (string= hash (match-string 3))))
1452              (goto-char beg) (setq end beg) ;; beginning of result
1453              (forward-line 1)
1454              (delete-region end (org-babel-result-end)) nil)))
1455         (and
1456          ;; unnamed results:
1457          ;; - return t if it is found, else return nil
1458          ;; - if it is found, and the hash doesn't match, delete and set end
1459          (or on-lob-line (re-search-forward "^[ \t]*#\\+end_src" nil t))
1460          (progn (end-of-line 1)
1461                 (if (eobp) (insert "\n") (forward-char 1))
1462                 (setq end (point))
1463                 (or (and (not name)
1464                          (progn ;; unnamed results line already exists
1465                            (re-search-forward "[^ \f\t\n\r\v]" nil t)
1466                            (beginning-of-line 1)
1467                            (looking-at
1468                             (concat org-babel-result-regexp "\n")))
1469                          (prog1 (point)
1470                            ;; must remove and rebuild if hash!=old-hash
1471                            (if (and hash (not (string= hash (match-string 3))))
1472                                (prog1 nil
1473                                  (forward-line 1)
1474                                  (delete-region
1475                                   end (org-babel-result-end)))
1476                              (setq end nil)))))))))
1477       (if (and insert end)
1478           (progn
1479             (goto-char end)
1480             (unless beg
1481               (if (looking-at "[\n\r]") (forward-char 1) (insert "\n")))
1482             (insert (concat
1483                      (if indent
1484                          (mapconcat
1485                           (lambda (el) " ")
1486                           (org-number-sequence 1 indent) "")
1487                        "")
1488                      "#+results"
1489                      (when hash (concat "["hash"]"))
1490                      ":"
1491                      (when name (concat " " name)) "\n"))
1492             (unless beg (insert "\n") (backward-char))
1493             (beginning-of-line 0)
1494             (if hash (org-babel-hide-hash))
1495             (point))
1496         found))))
1497
1498 (defvar org-block-regexp)
1499 (defun org-babel-read-result ()
1500   "Read the result at `point' into emacs-lisp."
1501   (let ((case-fold-search t) result-string)
1502     (cond
1503      ((org-at-table-p) (org-babel-read-table))
1504      ((org-at-item-p) (org-babel-read-list))
1505      ((looking-at org-bracket-link-regexp) (org-babel-read-link))
1506      ((looking-at org-block-regexp) (org-babel-trim (match-string 4)))
1507      ((looking-at "^[ \t]*: ")
1508       (setq result-string
1509             (org-babel-trim
1510              (mapconcat (lambda (line)
1511                           (if (and (> (length line) 1)
1512                                    (string-match "^[ \t]*: \\(.+\\)" line))
1513                               (match-string 1 line)
1514                             line))
1515                         (split-string
1516                          (buffer-substring
1517                           (point) (org-babel-result-end)) "[\r\n]+")
1518                         "\n")))
1519       (or (org-babel-number-p result-string) result-string))
1520      ((looking-at org-babel-result-regexp)
1521       (save-excursion (forward-line 1) (org-babel-read-result))))))
1522
1523 (defun org-babel-read-table ()
1524   "Read the table at `point' into emacs-lisp."
1525   (mapcar (lambda (row)
1526             (if (and (symbolp row) (equal row 'hline)) row
1527               (mapcar (lambda (el) (org-babel-read el 'inhibit-lisp-eval)) row)))
1528           (org-table-to-lisp)))
1529
1530 (defun org-babel-read-list ()
1531   "Read the list at `point' into emacs-lisp."
1532   (mapcar (lambda (el) (org-babel-read el 'inhibit-lisp-eval))
1533           (mapcar #'cadr (cdr (org-list-parse-list)))))
1534
1535 (defvar org-link-types-re)
1536 (defun org-babel-read-link ()
1537   "Read the link at `point' into emacs-lisp.
1538 If the path of the link is a file path it is expanded using
1539 `expand-file-name'."
1540   (let* ((case-fold-search t)
1541          (raw (and (looking-at org-bracket-link-regexp)
1542                    (org-babel-clean-text-properties (match-string 1))))
1543          (type (and (string-match org-link-types-re raw)
1544                     (match-string 1 raw))))
1545     (cond
1546      ((not type) (expand-file-name raw))
1547      ((string= type "file")
1548       (and (string-match "file\\(.*\\):\\(.+\\)" raw)
1549            (expand-file-name (match-string 2 raw))))
1550      (t raw))))
1551
1552 (defun org-babel-format-result (result &optional sep)
1553   "Format RESULT for writing to file."
1554   (flet ((echo-res (result)
1555                    (if (stringp result) result (format "%S" result))))
1556     (if (listp result)
1557         ;; table result
1558         (orgtbl-to-generic
1559          result
1560          (list
1561           :sep (or sep "\t")
1562           :fmt 'echo-res))
1563       ;; scalar result
1564       (echo-res result))))
1565
1566 (defun org-babel-insert-result
1567   (result &optional result-params info hash indent lang)
1568   "Insert RESULT into the current buffer.
1569 By default RESULT is inserted after the end of the
1570 current source block.  With optional argument RESULT-PARAMS
1571 controls insertion of results in the org-mode file.
1572 RESULT-PARAMS can take the following values...
1573
1574 replace - (default option) insert results after the source block
1575           replacing any previously inserted results
1576
1577 silent -- no results are inserted
1578
1579 file ---- the results are interpreted as a file path, and are
1580           inserted into the buffer using the Org-mode file syntax
1581
1582 list ---- the results are interpreted as an Org-mode list.
1583
1584 raw ----- results are added directly to the Org-mode file.  This
1585           is a good option if you code block will output org-mode
1586           formatted text.
1587
1588 org ----- similar in effect to raw, only the results are wrapped
1589           in an org code block.  Similar to the raw option, on
1590           export the results will be interpreted as org-formatted
1591           text, however by wrapping the results in an org code
1592           block they can be replaced upon re-execution of the
1593           code block.
1594
1595 html ---- results are added inside of a #+BEGIN_HTML block.  This
1596           is a good option if you code block will output html
1597           formatted text.
1598
1599 latex --- results are added inside of a #+BEGIN_LATEX block.
1600           This is a good option if you code block will output
1601           latex formatted text.
1602
1603 code ---- the results are extracted in the syntax of the source
1604           code of the language being evaluated and are added
1605           inside of a #+BEGIN_SRC block with the source-code
1606           language set appropriately.  Note this relies on the
1607           optional LANG argument."
1608   (if (stringp result)
1609       (progn
1610         (setq result (org-babel-clean-text-properties result))
1611         (when (member "file" result-params)
1612           (setq result (org-babel-result-to-file result))))
1613     (unless (listp result) (setq result (format "%S" result))))
1614   (if (and result-params (member "silent" result-params))
1615       (progn
1616         (message (replace-regexp-in-string "%" "%%" (format "%S" result)))
1617         result)
1618     (save-excursion
1619       (let* ((inlinep
1620               (save-excursion
1621                 (when (or (org-babel-get-inline-src-block-matches)
1622                           (org-babel-get-lob-one-liner-matches))
1623                   (goto-char (match-end 0))
1624                   (insert (if (listp result) "\n" " "))
1625                   (point))))
1626              (existing-result (unless inlinep
1627                                 (org-babel-where-is-src-block-result
1628                                  t info hash indent)))
1629              (results-switches
1630               (cdr (assoc :results_switches (nth 2 info))))
1631              beg end)
1632         (when (and (stringp result)  ; ensure results end in a newline
1633                    (not inlinep)
1634                    (> (length result) 0)
1635                    (not (or (string-equal (substring result -1) "\n")
1636                             (string-equal (substring result -1) "\r"))))
1637           (setq result (concat result "\n")))
1638         (if (not existing-result)
1639             (setq beg (or inlinep (point)))
1640           (goto-char existing-result)
1641           (save-excursion
1642             (re-search-forward "#" nil t)
1643             (setq indent (- (current-column) 1)))
1644           (forward-line 1)
1645           (setq beg (point))
1646           (cond
1647            ((member "replace" result-params)
1648             (delete-region (point) (org-babel-result-end)))
1649            ((member "append" result-params)
1650             (goto-char (org-babel-result-end)) (setq beg (point-marker)))
1651            ((member "prepend" result-params)))) ; already there
1652         (setq results-switches
1653               (if results-switches (concat " " results-switches) ""))
1654         ;; insert results based on type
1655         (cond
1656          ;; do nothing for an empty result
1657          ((= (length result) 0))
1658          ;; insert a list if preferred
1659          ((member "list" result-params)
1660           (insert
1661            (org-babel-trim
1662             (org-list-to-generic
1663              (cons 'unordered
1664                    (mapcar
1665                     (lambda (el) (list nil (if (stringp el) el (format "%S" el))))
1666                     (if (listp result) result (list result))))
1667              '(:splicep nil :istart "- " :iend "\n")))
1668            "\n"))
1669          ;; assume the result is a table if it's not a string
1670          ((not (stringp result))
1671           (goto-char beg)
1672           (insert (concat (orgtbl-to-orgtbl
1673                            (if (or (eq 'hline (car result))
1674                                    (and (listp (car result))
1675                                         (listp (cdr (car result)))))
1676                                result (list result))
1677                            '(:fmt (lambda (cell) (format "%s" cell)))) "\n"))
1678           (goto-char beg) (when (org-at-table-p) (org-table-align)))
1679          ((member "file" result-params)
1680           (when inlinep (goto-char inlinep))
1681           (insert result))
1682          (t (goto-char beg) (insert result)))
1683         (when (listp result) (goto-char (org-table-end)))
1684         (setq end (point-marker))
1685         ;; possibly wrap result
1686         (flet ((wrap (start finish)
1687                      (goto-char beg) (insert (concat start "\n"))
1688                      (goto-char end) (insert (concat finish "\n"))
1689                      (setq end (point-marker))))
1690           (cond
1691            ((member "html" result-params)
1692             (wrap "#+BEGIN_HTML" "#+END_HTML"))
1693            ((member "latex" result-params)
1694             (wrap "#+BEGIN_LaTeX" "#+END_LaTeX"))
1695            ((member "code" result-params)
1696             (wrap (format "#+BEGIN_SRC %s%s" (or lang "none") results-switches)
1697                   "#+END_SRC"))
1698            ((member "org" result-params)
1699             (wrap "#+BEGIN_ORG" "#+END_ORG"))
1700            ((member "raw" result-params)
1701             (goto-char beg) (if (org-at-table-p) (org-cycle)))
1702            ((member "wrap" result-params)
1703             (when (and (stringp result) (not (member "file" result-params)))
1704               (org-babel-examplize-region beg end results-switches))
1705             (wrap "#+BEGIN_RESULT" "#+END_RESULT"))
1706            ((and (stringp result) (not (member "file" result-params)))
1707             (org-babel-examplize-region beg end results-switches)
1708             (setq end (point)))))
1709         ;; possibly indent the results to match the #+results line
1710         (when (and (not inlinep) (numberp indent) indent (> indent 0)
1711                    ;; in this case `table-align' does the work for us
1712                    (not (and (listp result)
1713                              (member "append" result-params))))
1714           (indent-rigidly beg end indent))))
1715     (if (= (length result) 0)
1716         (if (member "value" result-params)
1717             (message "Code block returned no value.")
1718           (message "Code block produced no output."))
1719       (message "Code block evaluation complete."))))
1720
1721 (defun org-babel-remove-result (&optional info)
1722   "Remove the result of the current source block."
1723   (interactive)
1724   (let ((location (org-babel-where-is-src-block-result nil info)) start)
1725     (when location
1726       (setq start (- location 1))
1727       (save-excursion
1728         (goto-char location) (forward-line 1)
1729         (delete-region start (org-babel-result-end))))))
1730
1731 (defun org-babel-result-end ()
1732   "Return the point at the end of the current set of results"
1733   (save-excursion
1734     (cond
1735      ((org-at-table-p) (progn (goto-char (org-table-end)) (point)))
1736      ((org-at-item-p) (let* ((struct (org-list-struct))
1737                              (prvs (org-list-prevs-alist struct)))
1738                         (org-list-get-list-end (point-at-bol) struct prvs)))
1739      (t
1740       (let ((case-fold-search t)
1741             (blocks-re (regexp-opt
1742                         (list "latex" "html" "example" "src" "result" "org"))))
1743         (if (looking-at (concat "[ \t]*#\\+begin_" blocks-re))
1744             (progn (re-search-forward (concat "[ \t]*#\\+end_" blocks-re) nil t)
1745                    (forward-char 1))
1746           (while (looking-at "[ \t]*\\(: \\|\\[\\[\\)")
1747             (forward-line 1))))
1748       (point)))))
1749
1750 (defun org-babel-result-to-file (result)
1751   "Convert RESULT into an `org-mode' link.
1752 If the `default-directory' is different from the containing
1753 file's directory then expand relative links."
1754   (flet ((cond-exp (file)
1755           (if (and default-directory
1756                    buffer-file-name
1757                    (not (string= (expand-file-name default-directory)
1758                                  (expand-file-name
1759                                   (file-name-directory buffer-file-name)))))
1760               (expand-file-name file default-directory)
1761             file)))
1762     (if (stringp result)
1763         (format "[[file:%s]]" (cond-exp result))
1764       (when (and (listp result) (= 2 (length result))
1765                  (stringp (car result)) (stringp (cadr result)))
1766         (format "[[file:%s][%s]]" (car result) (cadr result))))))
1767
1768 (defun org-babel-examplize-region (beg end &optional results-switches)
1769   "Comment out region using the inline '==' or ': ' org example quote."
1770   (interactive "*r")
1771   (flet ((chars-between (b e) (string-match "[\\S]" (buffer-substring b e))))
1772     (if (or (chars-between (save-excursion (goto-char beg) (point-at-bol)) beg)
1773             (chars-between end (save-excursion (goto-char end) (point-at-eol))))
1774         (save-excursion
1775           (goto-char beg)
1776           (insert (format "=%s=" (prog1 (buffer-substring beg end)
1777                                    (delete-region beg end)))))
1778       (let ((size (count-lines beg end)))
1779         (save-excursion
1780           (cond ((= size 0))          ; do nothing for an empty result
1781                 ((< size org-babel-min-lines-for-block-output)
1782                  (goto-char beg)
1783                  (dotimes (n size)
1784                    (beginning-of-line 1) (insert ": ") (forward-line 1)))
1785                 (t
1786                  (goto-char beg)
1787                  (insert (if results-switches
1788                              (format "#+begin_example%s\n" results-switches)
1789                            "#+begin_example\n"))
1790                  (if (markerp end) (goto-char end) (forward-char (- end beg)))
1791                  (insert "#+end_example\n"))))))))
1792
1793 (defun org-babel-update-block-body (new-body)
1794   "Update the body of the current code block to NEW-BODY."
1795   (if (not (org-babel-where-is-src-block-head))
1796       (error "not in source block")
1797     (save-match-data
1798       (replace-match (concat (org-babel-trim new-body) "\n") nil t nil 5))
1799     (indent-rigidly (match-beginning 5) (match-end 5) 2)))
1800
1801 (defun org-babel-merge-params (&rest plists)
1802   "Combine all parameter association lists in PLISTS.
1803 Later elements of PLISTS override the values of previous elements.
1804 This takes into account some special considerations for certain
1805 parameters when merging lists."
1806   (let ((results-exclusive-groups
1807          '(("file" "list" "vector" "table" "scalar" "verbatim")
1808            ("raw" "org" "html" "latex" "code" "pp" "wrap")
1809            ("replace" "silent" "append" "prepend")
1810            ("output" "value")))
1811         (exports-exclusive-groups
1812          '(("code" "results" "both" "none")))
1813         (variable-index 0)
1814         params results exports tangle noweb cache vars shebang comments padline)
1815     (flet ((e-merge (exclusive-groups &rest result-params)
1816              ;; maintain exclusivity of mutually exclusive parameters
1817              (let (output)
1818                (mapc (lambda (new-params)
1819                        (mapc (lambda (new-param)
1820                                (mapc (lambda (exclusive-group)
1821                                        (when (member new-param exclusive-group)
1822                                          (mapcar (lambda (excluded-param)
1823                                                    (setq output
1824                                                          (delete
1825                                                           excluded-param
1826                                                           output)))
1827                                                  exclusive-group)))
1828                                      exclusive-groups)
1829                                (setq output (org-uniquify
1830                                              (cons new-param output))))
1831                              new-params))
1832                      result-params)
1833                output)))
1834       (mapc
1835        (lambda (plist)
1836          (mapc
1837           (lambda (pair)
1838             (case (car pair)
1839               (:var
1840                (let ((name (if (listp (cdr pair))
1841                                (cadr pair)
1842                              (and (string-match "^\\([^= \f\t\n\r\v]+\\)[ \t]*="
1843                                                 (cdr pair))
1844                                   (intern (match-string 1 (cdr pair)))))))
1845                  (if name
1846                      (setq vars
1847                            (append
1848                             (if (member name (mapcar #'car vars))
1849                                 (delq nil
1850                                       (mapcar
1851                                        (lambda (p)
1852                                          (unless (equal (car p) name) p))
1853                                        vars))
1854                               vars)
1855                             (list (cons name pair))))
1856                    ;; if no name is given and we already have named variables
1857                    ;; then assign to named variables in order
1858                    (if (and vars (nth variable-index vars))
1859                        (prog1 (setf (cddr (nth variable-index vars))
1860                                     (concat (symbol-name
1861                                              (car (nth variable-index vars)))
1862                                             "=" (cdr pair)))
1863                          (incf variable-index))
1864                      (error "variable \"%s\" must be assigned a default value"
1865                             (cdr pair))))))
1866               (:results
1867                (setq results (e-merge results-exclusive-groups
1868                                       results
1869                                       (split-string
1870                                        (let ((r (cdr pair)))
1871                                          (if (stringp r) r (eval r)))))))
1872               (:file
1873                (when (cdr pair)
1874                  (setq results (e-merge results-exclusive-groups
1875                                         results '("file")))
1876                  (unless (or (member "both" exports)
1877                              (member "none" exports)
1878                              (member "code" exports))
1879                    (setq exports (e-merge exports-exclusive-groups
1880                                           exports '("results"))))
1881                  (setq params (cons pair (assq-delete-all (car pair) params)))))
1882               (:exports
1883                (setq exports (e-merge exports-exclusive-groups
1884                                       exports (split-string (cdr pair)))))
1885               (:tangle ;; take the latest -- always overwrite
1886                (setq tangle (or (list (cdr pair)) tangle)))
1887               (:noweb
1888                (setq noweb (e-merge '(("yes" "no" "tangle")) noweb
1889                                     (split-string (or (cdr pair) "")))))
1890               (:cache
1891                (setq cache (e-merge '(("yes" "no")) cache
1892                                     (split-string (or (cdr pair) "")))))
1893               (:padline
1894                (setq padline (e-merge '(("yes" "no")) padline
1895                                       (split-string (or (cdr pair) "")))))
1896               (:shebang ;; take the latest -- always overwrite
1897                (setq shebang (or (list (cdr pair)) shebang)))
1898               (:comments
1899                (setq comments (e-merge '(("yes" "no")) comments
1900                                        (split-string (or (cdr pair) "")))))
1901               (t ;; replace: this covers e.g. :session
1902                (setq params (cons pair (assq-delete-all (car pair) params))))))
1903           plist))
1904        plists))
1905     (setq vars (reverse vars))
1906     (while vars (setq params (cons (cons :var (cddr (pop vars))) params)))
1907     (mapc
1908      (lambda (hd)
1909        (let ((key (intern (concat ":" (symbol-name hd))))
1910              (val (eval hd)))
1911          (setf params (cons (cons key (mapconcat 'identity val " ")) params))))
1912      '(results exports tangle noweb padline cache shebang comments))
1913     params))
1914
1915 (defun org-babel-expand-noweb-references (&optional info parent-buffer)
1916   "Expand Noweb references in the body of the current source code block.
1917
1918 For example the following reference would be replaced with the
1919 body of the source-code block named 'example-block'.
1920
1921 <<example-block>>
1922
1923 Note that any text preceding the <<foo>> construct on a line will
1924 be interposed between the lines of the replacement text.  So for
1925 example if <<foo>> is placed behind a comment, then the entire
1926 replacement text will also be commented.
1927
1928 This function must be called from inside of the buffer containing
1929 the source-code block which holds BODY.
1930
1931 In addition the following syntax can be used to insert the
1932 results of evaluating the source-code block named 'example-block'.
1933
1934 <<example-block()>>
1935
1936 Any optional arguments can be passed to example-block by placing
1937 the arguments inside the parenthesis following the convention
1938 defined by `org-babel-lob'.  For example
1939
1940 <<example-block(a=9)>>
1941
1942 would set the value of argument \"a\" equal to \"9\".  Note that
1943 these arguments are not evaluated in the current source-code
1944 block but are passed literally to the \"example-block\"."
1945   (let* ((parent-buffer (or parent-buffer (current-buffer)))
1946          (info (or info (org-babel-get-src-block-info)))
1947          (lang (nth 0 info))
1948          (body (nth 1 info))
1949          (comment (string= "noweb" (cdr (assoc :comments (nth 2 info)))))
1950          (new-body "") index source-name evaluate prefix blocks-in-buffer)
1951     (flet ((nb-add (text) (setq new-body (concat new-body text)))
1952            (c-wrap (text)
1953                    (with-temp-buffer
1954                      (funcall (intern (concat lang "-mode")))
1955                      (comment-region (point) (progn (insert text) (point)))
1956                      (org-babel-trim (buffer-string))))
1957            (blocks () ;; return the info lists of all blocks in this buffer
1958                    (let (infos)
1959                      (save-restriction
1960                        (widen)
1961                        (org-babel-map-src-blocks nil
1962                          (setq infos (cons (org-babel-get-src-block-info 'light)
1963                                            infos))))
1964                      (reverse infos))))
1965       (with-temp-buffer
1966         (insert body) (goto-char (point-min))
1967         (setq index (point))
1968         (while (and (re-search-forward "<<\\(.+?\\)>>" nil t))
1969           (save-match-data (setf source-name (match-string 1)))
1970           (save-match-data (setq evaluate (string-match "\(.*\)" source-name)))
1971           (save-match-data
1972             (setq prefix
1973                   (buffer-substring (match-beginning 0)
1974                                     (save-excursion
1975                                       (beginning-of-line 1) (point)))))
1976           ;; add interval to new-body (removing noweb reference)
1977           (goto-char (match-beginning 0))
1978           (nb-add (buffer-substring index (point)))
1979           (goto-char (match-end 0))
1980           (setq index (point))
1981           (nb-add
1982            (with-current-buffer parent-buffer
1983              (mapconcat ;; interpose PREFIX between every line
1984               #'identity
1985               (split-string
1986                (if evaluate
1987                    (let ((raw (org-babel-ref-resolve source-name)))
1988                      (if (stringp raw) raw (format "%S" raw)))
1989                  (or
1990                   ;; retrieve from the library of babel
1991                   (nth 2 (assoc (intern source-name)
1992                                 org-babel-library-of-babel))
1993                   ;; return the contents of headlines literally
1994                   (save-excursion
1995                     (when (org-babel-ref-goto-headline-id source-name)
1996                       (org-babel-ref-headline-body)))
1997                   ;; find the expansion of reference in this buffer
1998                   (mapconcat
1999                    (lambda (i)
2000                      (when (string= source-name
2001                                     (or (cdr (assoc :noweb-ref (nth 2 i)))
2002                                         (nth 4 i)))
2003                        (let ((body (org-babel-expand-noweb-references i)))
2004                          (if comment
2005                              ((lambda (cs)
2006                                 (concat (c-wrap (car cs)) "\n"
2007                                         body "\n" (c-wrap (cadr cs))))
2008                               (org-babel-tangle-comment-links i))
2009                            body))))
2010                    (or blocks-in-buffer
2011                        (setq blocks-in-buffer (blocks)))
2012                    "")
2013                   ;; possibly raise an error if named block doesn't exist
2014                   (if (member lang org-babel-noweb-error-langs)
2015                       (error "%s" (concat
2016                                    "<<" source-name ">> "
2017                                    "could not be resolved (see "
2018                                    "`org-babel-noweb-error-langs')"))
2019                     "")))
2020                "[\n\r]") (concat "\n" prefix)))))
2021         (nb-add (buffer-substring index (point-max)))))
2022     new-body))
2023
2024 (defun org-babel-clean-text-properties (text)
2025   "Strip all properties from text return."
2026   (when text
2027     (set-text-properties 0 (length text) nil text) text))
2028
2029 (defun org-babel-strip-protective-commas (body)
2030   "Strip protective commas from bodies of source blocks."
2031   (when body
2032     (replace-regexp-in-string "^,#" "#" body)))
2033
2034 (defun org-babel-script-escape (str &optional force)
2035   "Safely convert tables into elisp lists."
2036   (let (in-single in-double out)
2037     ((lambda (escaped) (condition-case nil (org-babel-read escaped) (error escaped)))
2038      (if (or force
2039              (and (stringp str)
2040                   (> (length str) 2)
2041                   (or (and (string-equal "[" (substring str 0 1))
2042                            (string-equal "]" (substring str -1)))
2043                       (and (string-equal "{" (substring str 0 1))
2044                            (string-equal "}" (substring str -1)))
2045                       (and (string-equal "(" (substring str 0 1))
2046                            (string-equal ")" (substring str -1))))))
2047          (org-babel-read
2048           (concat
2049            "'"
2050            (progn
2051              (mapc
2052               (lambda (ch)
2053                 (setq
2054                  out
2055                  (case ch
2056                    (91 (if (or in-double in-single) ; [
2057                            (cons 91 out)
2058                          (cons 40 out)))
2059                    (93 (if (or in-double in-single) ; ]
2060                            (cons 93 out)
2061                          (cons 41 out)))
2062                    (123 (if (or in-double in-single) ; {
2063                             (cons 123 out)
2064                           (cons 40 out)))
2065                    (125 (if (or in-double in-single) ; }
2066                             (cons 125 out)
2067                           (cons 41 out)))
2068                    (44 (if (or in-double in-single) ; ,
2069                            (cons 44 out) (cons 32 out)))
2070                    (39 (if in-double    ; '
2071                            (cons 39 out)
2072                          (setq in-single (not in-single)) (cons 34 out)))
2073                    (34 (if in-single    ; "
2074                            (append (list 34 32) out)
2075                          (setq in-double (not in-double)) (cons 34 out)))
2076                    (t  (cons ch out)))))
2077               (string-to-list str))
2078              (apply #'string (reverse out)))))
2079        str))))
2080
2081 (defun org-babel-read (cell &optional inhibit-lisp-eval)
2082   "Convert the string value of CELL to a number if appropriate.
2083 Otherwise if cell looks like lisp (meaning it starts with a
2084 \"(\", \"'\", \"`\" or a \"[\") then read it as lisp, otherwise
2085 return it unmodified as a string.  Optional argument NO-LISP-EVAL
2086 inhibits lisp evaluation for situations in which is it not
2087 appropriate."
2088   (if (and (stringp cell) (not (equal cell "")))
2089       (or (org-babel-number-p cell)
2090           (if (and (not inhibit-lisp-eval)
2091                    (member (substring cell 0 1) '("(" "'" "`" "[")))
2092               (eval (read cell))
2093             (if (string= (substring cell 0 1) "\"")
2094                 (read cell)
2095               (progn (set-text-properties 0 (length cell) nil cell) cell))))
2096     cell))
2097
2098 (defun org-babel-number-p (string)
2099   "If STRING represents a number return it's value."
2100   (if (and (string-match "^-?[0-9]*\\.?[0-9]*$" string)
2101            (= (length (substring string (match-beginning 0)
2102                                  (match-end 0)))
2103               (length string)))
2104       (string-to-number string)))
2105
2106 (defun org-babel-import-elisp-from-file (file-name &optional separator)
2107   "Read the results located at FILE-NAME into an elisp table.
2108 If the table is trivial, then return it as a scalar."
2109   (let (result)
2110     (save-window-excursion
2111       (with-temp-buffer
2112         (condition-case nil
2113             (progn
2114               (org-table-import file-name separator)
2115               (delete-file file-name)
2116               (setq result (mapcar (lambda (row)
2117                                      (mapcar #'org-babel-string-read row))
2118                                    (org-table-to-lisp))))
2119           (error nil)))
2120       (if (null (cdr result)) ;; if result is trivial vector, then scalarize it
2121           (if (consp (car result))
2122               (if (null (cdr (car result)))
2123                   (caar result)
2124                 result)
2125             (car result))
2126         result))))
2127
2128 (defun org-babel-string-read (cell)
2129   "Strip nested \"s from around strings."
2130   (org-babel-read (or (and (stringp cell)
2131                            (string-match "\\\"\\(.+\\)\\\"" cell)
2132                            (match-string 1 cell))
2133                       cell)))
2134
2135 (defun org-babel-reverse-string (string)
2136   "Return the reverse of STRING."
2137   (apply 'string (reverse (string-to-list string))))
2138
2139 (defun org-babel-chomp (string &optional regexp)
2140   "Strip trailing spaces and carriage returns from STRING.
2141 Default regexp used is \"[ \f\t\n\r\v]\" but can be
2142 overwritten by specifying a regexp as a second argument."
2143   (let ((regexp (or regexp "[ \f\t\n\r\v]")))
2144     (while (and (> (length string) 0)
2145                 (string-match regexp (substring string -1)))
2146       (setq string (substring string 0 -1)))
2147     string))
2148
2149 (defun org-babel-trim (string &optional regexp)
2150   "Strip leading and trailing spaces and carriage returns from STRING.
2151 Like `org-babel-chomp' only it runs on both the front and back
2152 of the string."
2153   (org-babel-chomp (org-babel-reverse-string
2154                     (org-babel-chomp (org-babel-reverse-string string) regexp))
2155                    regexp))
2156
2157 (defvar org-babel-org-babel-call-process-region-original nil)
2158 (defun org-babel-tramp-handle-call-process-region
2159   (start end program &optional delete buffer display &rest args)
2160   "Use tramp to handle call-process-region.
2161 Fixes a bug in `tramp-handle-call-process-region'."
2162   (if (and (featurep 'tramp) (file-remote-p default-directory))
2163       (let ((tmpfile (tramp-compat-make-temp-file "")))
2164         (write-region start end tmpfile)
2165         (when delete (delete-region start end))
2166         (unwind-protect
2167             ;;  (apply 'call-process program tmpfile buffer display args)
2168             ;; bug in tramp
2169             (apply 'process-file program tmpfile buffer display args)
2170           (delete-file tmpfile)))
2171     ;; org-babel-call-process-region-original is the original emacs
2172     ;; definition. It is in scope from the let binding in
2173     ;; org-babel-execute-src-block
2174     (apply org-babel-call-process-region-original
2175            start end program delete buffer display args)))
2176
2177 (defun org-babel-local-file-name (file)
2178   "Return the local name component of FILE."
2179   (if (file-remote-p file)
2180       (let (localname)
2181         (with-parsed-tramp-file-name file nil
2182           localname))
2183     file))
2184
2185 (defun org-babel-process-file-name (name &optional no-quote-p)
2186   "Prepare NAME to be used in an external process.
2187 If NAME specifies a remote location, the remote portion of the
2188 name is removed, since in that case the process will be executing
2189 remotely. The file name is then processed by
2190 `expand-file-name'. Unless second argument NO-QUOTE-P is non-nil,
2191 the file name is additionally processed by
2192 `shell-quote-argument'"
2193   ((lambda (f) (if no-quote-p f (shell-quote-argument f)))
2194    (expand-file-name (org-babel-local-file-name name))))
2195
2196 (defvar org-babel-temporary-directory)
2197 (unless (or noninteractive (boundp 'org-babel-temporary-directory))
2198   (defvar org-babel-temporary-directory
2199     (or (and (boundp 'org-babel-temporary-directory)
2200              (file-exists-p org-babel-temporary-directory)
2201              org-babel-temporary-directory)
2202         (make-temp-file "babel-" t))
2203     "Directory to hold temporary files created to execute code blocks.
2204 Used by `org-babel-temp-file'.  This directory will be removed on
2205 Emacs shutdown."))
2206
2207 (defun org-babel-temp-file (prefix &optional suffix)
2208   "Create a temporary file in the `org-babel-temporary-directory'.
2209 Passes PREFIX and SUFFIX directly to `make-temp-file' with the
2210 value of `temporary-file-directory' temporarily set to the value
2211 of `org-babel-temporary-directory'."
2212   (if (file-remote-p default-directory)
2213       (make-temp-file
2214        (concat (file-remote-p default-directory)
2215                (expand-file-name
2216                 prefix temporary-file-directory)
2217                nil suffix))
2218     (let ((temporary-file-directory
2219            (or (and (boundp 'org-babel-temporary-directory)
2220                     (file-exists-p org-babel-temporary-directory)
2221                     org-babel-temporary-directory)
2222                temporary-file-directory)))
2223       (make-temp-file prefix nil suffix))))
2224
2225 (defun org-babel-remove-temporary-directory ()
2226   "Remove `org-babel-temporary-directory' on Emacs shutdown."
2227   (when (and (boundp 'org-babel-temporary-directory)
2228              (file-exists-p org-babel-temporary-directory))
2229     ;; taken from `delete-directory' in files.el
2230     (condition-case nil
2231         (progn
2232           (mapc (lambda (file)
2233                   ;; This test is equivalent to
2234                   ;; (and (file-directory-p fn) (not (file-symlink-p fn)))
2235                   ;; but more efficient
2236                   (if (eq t (car (file-attributes file)))
2237                       (delete-directory file)
2238                     (delete-file file)))
2239                 ;; We do not want to delete "." and "..".
2240                 (directory-files org-babel-temporary-directory 'full
2241                                  "^\\([^.]\\|\\.\\([^.]\\|\\..\\)\\).*"))
2242           (delete-directory org-babel-temporary-directory))
2243       (error
2244        (message "Failed to remove temporary Org-babel directory %s"
2245                 (if (boundp 'org-babel-temporary-directory)
2246                     org-babel-temporary-directory
2247                   "[directory not defined]"))))))
2248
2249 (add-hook 'kill-emacs-hook 'org-babel-remove-temporary-directory)
2250
2251 (provide 'ob)
2252
2253
2254
2255 ;;; ob.el ends here