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-;;; ob-calc.el --- org-babel functions for calc code evaluation
-
-;; Copyright (C) 2010  Free Software Foundation, Inc
-
-;; Author: Eric Schulte
-;; Keywords: literate programming, reproducible research
-;; Homepage: http://orgmode.org
-;; Version: 7.4
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software: you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; Org-Babel support for evaluating calc code
-
-;;; Code:
-(require 'ob)
-(require 'calc)
-(require 'calc-trail)
-(eval-when-compile (require 'ob-comint))
-
-(defvar org-babel-default-header-args:calc nil
-  "Default arguments for evaluating an calc source block.")
-
-(defun org-babel-expand-body:calc (body params)
-  "Expand BODY according to PARAMS, return the expanded body." body)
-
-(defun org-babel-execute:calc (body params)
-  "Execute a block of calc code with Babel."
-  (unless (get-buffer "*Calculator*")
-    (save-window-excursion (calc) (calc-quit)))
-  (let* ((vars (mapcar #'cdr (org-babel-get-header params :var)))
-	 (var-syms (mapcar #'car vars))
-	 (var-names (mapcar #'symbol-name var-syms)))
-    (mapc
-     (lambda (pair)
-       (calc-push-list (list (cdr pair)))
-       (calc-store-into (car pair)))
-     vars)
-    (mapc
-     (lambda (line)
-       (when (> (length line) 0)
-	 (cond
-	  ;; simple variable name
-	  ((member line var-names) (calc-recall (intern line)))
-	  ;; stack operation
-	  ((string= "'" (substring line 0 1))
-	   (funcall (lookup-key calc-mode-map (substring line 1)) nil))
-	  ;; complex expression
-	  (t
-	   (calc-push-list
-	    (list ((lambda (res)
-		     (cond
-		      ((numberp res) res)
-		      ((math-read-number res) (math-read-number res))
-		      ((listp res) (error "calc error \"%s\" on input \"%s\""
-					  (cadr res) line))
-		      (t (calc-eval
-			  (math-evaluate-expr
-			   ;; resolve user variables, calc built in
-			   ;; variables are handled automatically
-			   ;; upstream by calc
-			   (mapcar (lambda (el)
-				     (if (and (consp el) (equal 'var (car el))
-					      (member (cadr el) var-syms))
-					 (progn
-					   (calc-recall (cadr el))
-					   (prog1 (calc-top 1)
-					     (calc-pop 1)))
-				       el))
-				   ;; parse line into calc objects
-				   (car (math-read-exprs line))))))))
-		   (calc-eval line))))))))
-     (mapcar #'org-babel-trim
-	     (split-string (org-babel-expand-body:calc body params) "[\n\r]"))))
-  (save-excursion
-    (with-current-buffer (get-buffer "*Calculator*")
-      (calc-eval (calc-top 1)))))
-
-(provide 'ob-calc)
-
-;; arch-tag: 5c57a3b7-5818-4c6c-acda-7a94831a6449
-
-;;; ob-calc.el ends here