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+;;; ob-coq.el --- org-babel functions for Coq
+
+;; Copyright (C) 2010-2014 Free Software Foundation, Inc.
+
+;; Author: Eric Schulte
+;; Keywords: literate programming, reproducible research
+;; Homepage: http://orgmode.org
+
+;; 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:
+
+;; Rudimentary support for evaluating Coq code blocks.  Currently only
+;; session evaluation is supported.  Requires both coq.el and
+;; coq-inferior.el, both of which are distributed with Coq.
+;;
+;; http://coq.inria.fr/
+
+;;; Code:
+(require 'ob)
+
+(declare-function run-coq "ext:coq-inferior.el" (cmd))
+(declare-function coq-proc "ext:coq-inferior.el" ())
+
+(defvar org-babel-coq-buffer "*coq*"
+  "Buffer in which to evaluate coq code blocks.")
+
+(defvar org-babel-coq-eoe "org-babel-coq-eoe")
+
+(defun org-babel-coq-clean-prompt (string)
+  (if (string-match "^[^[:space:]]+ < " string)
+      (substring string 0 (match-beginning 0))
+    string))
+
+(defun org-babel-execute:coq (body params)
+  (let ((full-body (org-babel-expand-body:generic body params))
+	(session (org-babel-coq-initiate-session))
+	(pt (lambda ()
+	      (marker-position
+	       (process-mark (get-buffer-process (current-buffer)))))))
+    (org-babel-coq-clean-prompt
+     (org-babel-comint-in-buffer session
+       (let ((start (funcall pt)))
+	 (with-temp-buffer
+	   (insert full-body)
+	   (comint-send-region (coq-proc) (point-min) (point-max))
+	   (comint-send-string (coq-proc)
+	    (if (string= (buffer-substring (- (point-max) 1) (point-max)) ".")
+		"\n"
+	      ".\n")))
+	 (while (equal start (funcall pt)) (sleep-for 0.1))
+	 (buffer-substring start (funcall pt)))))))
+
+(defun org-babel-coq-initiate-session ()
+  "Initiate a coq session.
+If there is not a current inferior-process-buffer in SESSION then
+create one.  Return the initialized session."
+  (unless (fboundp 'run-coq)
+    (error "`run-coq' not defined, load coq-inferior.el"))
+  (save-window-excursion (run-coq "coqtop"))
+  (sit-for 0.1)
+  (get-buffer org-babel-coq-buffer))
+
+(provide 'ob-coq)