Don't use `org-flet' in some functions

* ob-ref.el (org-babel-ref-index-list): Use let* and rename
the variable `length' to `lgth'.

* org-plot.el (org-plot/gnuplot-to-grid-data): Don't use
̀org-flet'.

* org-exp.el (org-export-format-source-code-or-example):
Ditto.

* org-exp-blocks.el (org-export-blocks-preprocess): Ditto.

* ob.el (org-babel-view-src-block-info)
(org-babel-execute-src-block, org-babel-edit-distance)
(org-babel-switch-to-session-with-code)
(org-babel-balanced-split, org-babel-insert-result): Ditto.

* ob-ref.el (org-babel-ref-index-list): Ditto.

* ob-python.el (org-babel-python-evaluate-session): Ditto.

* ob-lob.el (org-babel-lob-get-info): Ditto.

* ob-gnuplot.el (org-babel-expand-body:gnuplot): Ditto.

* ob-exp.el (org-babel-exp-do-export): Ditto.

lisp/ob-exp.el

@@ -227,13 +227,13 @@ org-mode text."
 (defun org-babel-exp-do-export (info type &optional hash)
   "Return a string with the exported content of a code block.
 The function respects the value of the :exports header argument."
-  (org-flet ((silently () (let ((session (cdr (assoc :session (nth 2 info)))))
-			(when (not (and session (equal "none" session)))
-			  (org-babel-exp-results info type 'silent))))
-	 (clean () (unless (eq type 'inline) (org-babel-remove-result info))))
+  (let ((silently (lambda () (let ((session (cdr (assoc :session (nth 2 info)))))
+			       (when (not (and session (equal "none" session)))
+				 (org-babel-exp-results info type 'silent)))))
+	(clean (lambda () (unless (eq type 'inline) (org-babel-remove-result info)))))
     (case (intern (or (cdr (assoc :exports (nth 2 info))) "code"))
-      ('none (silently) (clean) "")
-      ('code (silently) (clean) (org-babel-exp-code info))
+      ('none (funcall silently) (funcall clean) "")
+      ('code (funcall silently) (funcall clean) (org-babel-exp-code info))
       ('results (org-babel-exp-results info type nil hash) "")
       ('both (org-babel-exp-results info type nil hash)
 	     (org-babel-exp-code info)))))

lisp/ob-gnuplot.el

@@ -87,46 +87,45 @@ code."
            (timefmt (plist-get params :timefmt))
            (time-ind (or (plist-get params :timeind)
                          (when timefmt 1)))
+	   (add-to-body (lambda (text) (setq body (concat text "\n" body))))
            output)
-      (org-flet ((add-to-body (text)
-                          (setq body (concat text "\n" body))))
-        ;; append header argument settings to body
-        (when title (add-to-body (format "set title '%s'" title))) ;; title
-        (when lines (mapc (lambda (el) (add-to-body el)) lines)) ;; line
-        (when sets
-          (mapc (lambda (el) (add-to-body (format "set %s" el))) sets))
-        (when x-labels
-          (add-to-body
-           (format "set xtics (%s)"
-                   (mapconcat (lambda (pair)
-                                (format "\"%s\" %d" (cdr pair) (car pair)))
-                              x-labels ", "))))
-        (when y-labels
-          (add-to-body
-           (format "set ytics (%s)"
-                   (mapconcat (lambda (pair)
-                                (format "\"%s\" %d" (cdr pair) (car pair)))
-                              y-labels ", "))))
-        (when time-ind
-          (add-to-body "set xdata time")
-          (add-to-body (concat "set timefmt \""
-                               (or timefmt
-                                   "%Y-%m-%d-%H:%M:%S") "\"")))
-        (when out-file (add-to-body (format "set output \"%s\"" out-file)))
-        (when term (add-to-body (format "set term %s" term)))
-        ;; insert variables into code body: this should happen last
-        ;; placing the variables at the *top* of the code in case their
-        ;; values are used later
-        (add-to-body (mapconcat #'identity
-				(org-babel-variable-assignments:gnuplot params)
-				"\n"))
-        ;; replace any variable names preceded by '$' with the actual
-        ;; value of the variable
-        (mapc (lambda (pair)
-                (setq body (replace-regexp-in-string
-                            (format "\\$%s" (car pair)) (cdr pair) body)))
-              vars))
-      body)))
+      ;; append header argument settings to body
+      (when title (funcall add-to-body (format "set title '%s'" title))) ;; title
+      (when lines (mapc (lambda (el) (funcall add-to-body el)) lines)) ;; line
+      (when sets
+	(mapc (lambda (el) (funcall add-to-body (format "set %s" el))) sets))
+      (when x-labels
+	(funcall add-to-body
+		 (format "set xtics (%s)"
+			 (mapconcat (lambda (pair)
+				      (format "\"%s\" %d" (cdr pair) (car pair)))
+				    x-labels ", "))))
+      (when y-labels
+	(funcall add-to-body
+		 (format "set ytics (%s)"
+			 (mapconcat (lambda (pair)
+				      (format "\"%s\" %d" (cdr pair) (car pair)))
+				    y-labels ", "))))
+      (when time-ind
+	(funcall add-to-body "set xdata time")
+	(funcall add-to-body (concat "set timefmt \""
+				     (or timefmt
+					 "%Y-%m-%d-%H:%M:%S") "\"")))
+      (when out-file (funcall add-to-body (format "set output \"%s\"" out-file)))
+      (when term (funcall add-to-body (format "set term %s" term)))
+      ;; insert variables into code body: this should happen last
+      ;; placing the variables at the *top* of the code in case their
+      ;; values are used later
+      (funcall add-to-body (mapconcat #'identity
+				      (org-babel-variable-assignments:gnuplot params)
+				      "\n"))
+      ;; replace any variable names preceded by '$' with the actual
+      ;; value of the variable
+      (mapc (lambda (pair)
+	      (setq body (replace-regexp-in-string
+			  (format "\\$%s" (car pair)) (cdr pair) body)))
+	    vars))
+    body))
 
 (defun org-babel-execute:gnuplot (body params)
   "Execute a block of Gnuplot code.

lisp/ob-lob.el

@@ -97,49 +97,49 @@ if so then run the appropriate source block from the Library."
 ;;;###autoload
 (defun org-babel-lob-get-info ()
   "Return a Library of Babel function call as a string."
-  (org-flet ((nonempty (a b)
-		   (let ((it (match-string a)))
-		     (if (= (length it) 0) (match-string b) it))))
-    (let ((case-fold-search t))
-      (save-excursion
-	(beginning-of-line 1)
-	(when (looking-at org-babel-lob-one-liner-regexp)
-	  (append
-	   (mapcar #'org-babel-clean-text-properties
-		   (list
-		    (format "%s%s(%s)%s"
-			    (nonempty 3 12)
-			    (if (not (= 0 (length (nonempty 5 14))))
-				(concat "[" (nonempty 5 14) "]") "")
-			    (or (nonempty 7 16) "")
-			    (or (nonempty 8 19) ""))
-		    (nonempty 9 18)))
-	   (list (length (if (= (length (match-string 12)) 0)
-			     (match-string 2) (match-string 11))))))))))
+  (let ((case-fold-search t)
+	(nonempty (lambda (a b)
+		    (let ((it (match-string a)))
+		      (if (= (length it) 0) (match-string b) it)))))
+    (save-excursion
+      (beginning-of-line 1)
+      (when (looking-at org-babel-lob-one-liner-regexp)
+	(append
+	 (mapcar #'org-babel-clean-text-properties
+		 (list
+		  (format "%s%s(%s)%s"
+			  (funcall nonempty 3 12)
+			  (if (not (= 0 (length (funcall nonempty 5 14))))
+			      (concat "[" (funcall nonempty 5 14) "]") "")
+			  (or (funcall nonempty 7 16) "")
+			  (or (funcall nonempty 8 19) ""))
+		  (funcall nonempty 9 18)))
+	 (list (length (if (= (length (match-string 12)) 0)
+			   (match-string 2) (match-string 11)))))))))
 
 (defun org-babel-lob-execute (info)
   "Execute the lob call specified by INFO."
-  (org-flet ((mkinfo (p) (list "emacs-lisp" "results" p nil nil (nth 2 info))))
-    (let* ((pre-params (org-babel-merge-params
-			org-babel-default-header-args
-			(org-babel-params-from-properties)
-			(org-babel-parse-header-arguments
-			 (org-babel-clean-text-properties
-			  (concat ":var results="
-				  (mapconcat #'identity (butlast info) " "))))))
-	   (pre-info (mkinfo pre-params))
-	   (cache? (and (cdr (assoc :cache pre-params))
-			(string= "yes" (cdr (assoc :cache pre-params)))))
-	   (new-hash (when cache? (org-babel-sha1-hash pre-info)))
-	   (old-hash (when cache? (org-babel-current-result-hash))))
-      (if (and cache? (equal new-hash old-hash))
-	  (save-excursion (goto-char (org-babel-where-is-src-block-result))
-			  (forward-line 1)
-			  (message "%S" (org-babel-read-result)))
-	  (prog1 (org-babel-execute-src-block
-		  nil (mkinfo (org-babel-process-params pre-params)))
-	    ;; update the hash
-	    (when new-hash (org-babel-set-current-result-hash new-hash)))))))
+  (let* ((mkinfo (lambda (p) (list "emacs-lisp" "results" p nil nil (nth 2 info))))
+	 (pre-params (org-babel-merge-params
+		      org-babel-default-header-args
+		      (org-babel-params-from-properties)
+		      (org-babel-parse-header-arguments
+		       (org-babel-clean-text-properties
+			(concat ":var results="
+				(mapconcat #'identity (butlast info) " "))))))
+	 (pre-info (funcall mkinfo pre-params))
+	 (cache? (and (cdr (assoc :cache pre-params))
+		      (string= "yes" (cdr (assoc :cache pre-params)))))
+	 (new-hash (when cache? (org-babel-sha1-hash pre-info)))
+	 (old-hash (when cache? (org-babel-current-result-hash))))
+    (if (and cache? (equal new-hash old-hash))
+	(save-excursion (goto-char (org-babel-where-is-src-block-result))
+			(forward-line 1)
+			(message "%S" (org-babel-read-result)))
+      (prog1 (org-babel-execute-src-block
+	      nil (funcall mkinfo (org-babel-process-params pre-params)))
+	;; update the hash
+	(when new-hash (org-babel-set-current-result-hash new-hash))))))
 
 (provide 'ob-lob)
 

lisp/ob-python.el

@@ -238,22 +238,23 @@ last statement in BODY, as elisp."
 If RESULT-TYPE equals 'output then return standard output as a
 string. If RESULT-TYPE equals 'value then return the value of the
 last statement in BODY, as elisp."
-  (org-flet ((send-wait () (comint-send-input nil t) (sleep-for 0 5))
+  (let* ((send-wait (lambda () (comint-send-input nil t) (sleep-for 0 5)))
 	 (dump-last-value
-	  (tmp-file pp)
-	  (mapc
-	   (lambda (statement) (insert statement) (send-wait))
-	   (if pp
-	       (list
-		"import pprint"
-		(format "open('%s', 'w').write(pprint.pformat(_))"
-			(org-babel-process-file-name tmp-file 'noquote)))
-	     (list (format "open('%s', 'w').write(str(_))"
-			   (org-babel-process-file-name tmp-file 'noquote))))))
-	 (input-body (body)
-		     (mapc (lambda (line) (insert line) (send-wait))
-			   (split-string body "[\r\n]"))
-		     (send-wait)))
+	  (lambda
+	    (tmp-file pp)
+	    (mapc
+	     (lambda (statement) (insert statement) (funcall send-wait))
+	     (if pp
+		 (list
+		  "import pprint"
+		  (format "open('%s', 'w').write(pprint.pformat(_))"
+			  (org-babel-process-file-name tmp-file 'noquote)))
+	       (list (format "open('%s', 'w').write(str(_))"
+			     (org-babel-process-file-name tmp-file 'noquote)))))))
+	 (input-body (lambda (body)
+		       (mapc (lambda (line) (insert line) (funcall send-wait))
+			     (split-string body "[\r\n]"))
+		       (funcall send-wait))))
     ((lambda (results)
        (unless (string= (substring org-babel-python-eoe-indicator 1 -1) results)
 	 (if (or (member "code" result-params)
@@ -269,21 +270,21 @@ last statement in BODY, as elisp."
 	 (butlast
 	  (org-babel-comint-with-output
 	      (session org-babel-python-eoe-indicator t body)
-	    (input-body body)
-	    (send-wait) (send-wait)
+	    (funcall input-body body)
+	    (funcall send-wait) (funcall send-wait)
 	    (insert org-babel-python-eoe-indicator)
-	    (send-wait))
+	    (funcall send-wait))
 	  2) "\n"))
        (value
 	(let ((tmp-file (org-babel-temp-file "python-")))
 	  (org-babel-comint-with-output
 	      (session org-babel-python-eoe-indicator nil body)
 	    (let ((comint-process-echoes nil))
-	      (input-body body)
-	      (dump-last-value tmp-file (member "pp" result-params))
-	      (send-wait) (send-wait)
+	      (funcall input-body body)
+	      (funcall dump-last-value tmp-file (member "pp" result-params))
+	      (funcall send-wait) (funcall send-wait)
 	      (insert org-babel-python-eoe-indicator)
-	      (send-wait)))
+	      (funcall send-wait)))
 	  (org-babel-eval-read-file tmp-file)))))))
 
 (defun org-babel-python-read-string (string)

lisp/ob-ref.el

@@ -218,29 +218,30 @@ returned, or an empty string or \"*\" both of which are
 interpreted to mean the entire range and as such are equivalent
 to \"0:-1\"."
   (if (and (> (length index) 0) (string-match "^\\([^,]*\\),?" index))
-      (let ((ind-re "\\(\\([-[:digit:]]+\\):\\([-[:digit:]]+\\)\\|\*\\)")
-	    (length (length lis))
-            (portion (match-string 1 index))
-            (remainder (substring index (match-end 0))))
-        (org-flet ((wrap (num) (if (< num 0) (+ length num) num))
-               (open (ls) (if (and (listp ls) (= (length ls) 1)) (car ls) ls)))
-          (open
-           (mapcar
-            (lambda (sub-lis)
-	      (if (listp sub-lis)
-		  (org-babel-ref-index-list remainder sub-lis)
-		sub-lis))
-            (if (or (= 0 (length portion)) (string-match ind-re portion))
-                (mapcar
-		 (lambda (n) (nth n lis))
-		 (apply 'org-number-sequence
-			(if (and (> (length portion) 0) (match-string 2 portion))
-			    (list
-			     (wrap (string-to-number (match-string 2 portion)))
-			     (wrap (string-to-number (match-string 3 portion))))
-			  (list (wrap 0) (wrap -1)))))
-              (list (nth (wrap (string-to-number portion)) lis)))))))
-    lis))
+      (let* ((ind-re "\\(\\([-[:digit:]]+\\):\\([-[:digit:]]+\\)\\|\*\\)")
+	     (lgth (length lis))
+	     (portion (match-string 1 index))
+	     (remainder (substring index (match-end 0)))
+	     (wrap (lambda (num) (if (< num 0) (+ lgth num) num)))
+	     (open (lambda (ls) (if (and (listp ls) (= (length ls) 1)) (car ls) ls))))
+	(funcall
+	 open
+	 (mapcar
+	  (lambda (sub-lis)
+	    (if (listp sub-lis)
+		(org-babel-ref-index-list remainder sub-lis)
+	      sub-lis))
+	  (if (or (= 0 (length portion)) (string-match ind-re portion))
+	      (mapcar
+	       (lambda (n) (nth n lis))
+	       (apply 'org-number-sequence
+		      (if (and (> (length portion) 0) (match-string 2 portion))
+			  (list
+			   (funcall wrap (string-to-number (match-string 2 portion)))
+			   (funcall wrap (string-to-number (match-string 3 portion))))
+			(list (funcall wrap 0) (funcall wrap -1)))))
+	    (list (nth (funcall wrap (string-to-number portion)) lis)))))))
+  lis)
 
 (defun org-babel-ref-split-args (arg-string)
   "Split ARG-STRING into top-level arguments of balanced parenthesis."

lisp/ob.el

@@ -343,27 +343,27 @@ then run `org-babel-execute-src-block'."
 This includes header arguments, language and name, and is largely
 a window into the `org-babel-get-src-block-info' function."
   (interactive)
-  (let ((info (org-babel-get-src-block-info 'light)))
-    (org-flet ((full (it) (> (length it) 0))
-	   (printf (fmt &rest args) (princ (apply #'format fmt args))))
-      (when info
-	(with-help-window (help-buffer)
-	  (let ((name        (nth 4 info))
-		(lang        (nth 0 info))
-		(switches    (nth 3 info))
-		(header-args (nth 2 info)))
-	    (when name            (printf "Name: %s\n"     name))
-	    (when lang            (printf "Lang: %s\n"     lang))
-	    (when (full switches) (printf "Switches: %s\n" switches))
-	    (printf "Header Arguments:\n")
-	    (dolist (pair (sort header-args
-				(lambda (a b) (string< (symbol-name (car a))
-						  (symbol-name (car b))))))
-	      (when (full (cdr pair))
-		(printf "\t%S%s\t%s\n"
-			(car pair)
-			(if (> (length (format "%S" (car pair))) 7) "" "\t")
-			(cdr pair))))))))))
+  (let ((info (org-babel-get-src-block-info 'light))
+	(full (lambda (it) (> (length it) 0)))
+	(printf (lambda (fmt &rest args) (princ (apply #'format fmt args)))))
+    (when info
+      (with-help-window (help-buffer)
+	(let ((name        (nth 4 info))
+	      (lang        (nth 0 info))
+	      (switches    (nth 3 info))
+	      (header-args (nth 2 info)))
+	  (when name            (funcall printf "Name: %s\n"     name))
+	  (when lang            (funcall printf "Lang: %s\n"     lang))
+	  (when (funcall full switches) (funcall printf "Switches: %s\n" switches))
+	  (funcall printf "Header Arguments:\n")
+	  (dolist (pair (sort header-args
+			      (lambda (a b) (string< (symbol-name (car a))
+						     (symbol-name (car b))))))
+	    (when (funcall full (cdr pair))
+	      (funcall printf "\t%S%s\t%s\n"
+		       (car pair)
+		       (if (> (length (format "%S" (car pair))) 7) "" "\t")
+		       (cdr pair)))))))))
 
 ;;;###autoload
 (defun org-babel-expand-src-block-maybe ()
@@ -541,14 +541,14 @@ block."
 	     result cmd)
 	(unwind-protect
 	    (org-flet ((call-process-region (&rest args)
-		    (apply 'org-babel-tramp-handle-call-process-region args)))
-	      (org-flet ((lang-check (f)
-		       (let ((f (intern (concat "org-babel-execute:" f))))
-			 (when (fboundp f) f))))
+					    (apply 'org-babel-tramp-handle-call-process-region args)))
+	      (let ((lang-check (lambda (f)
+				  (let ((f (intern (concat "org-babel-execute:" f))))
+				    (when (fboundp f) f)))))
 		(setq cmd
-		      (or (lang-check lang)
-			  (lang-check (symbol-name
-				       (cdr (assoc lang org-src-lang-modes))))
+		      (or (funcall lang-check lang)
+			  (funcall lang-check (symbol-name
+					       (cdr (assoc lang org-src-lang-modes))))
 			  (error "No org-babel-execute function for %s!" lang))))
 	      (if (and (not arg) new-hash (equal new-hash old-hash))
 		  (save-excursion ;; return cached result
@@ -621,16 +621,18 @@ arguments and pop open the results in a preview buffer."
   (let* ((l1 (length s1))
 	 (l2 (length s2))
 	 (dist (vconcat (mapcar (lambda (_) (make-vector (1+ l2) nil))
-				(number-sequence 1 (1+ l1))))))
-    (org-flet ((in (i j) (aref (aref dist i) j))
-	   (mmin (&rest lst) (apply #'min (remove nil lst))))
+				(number-sequence 1 (1+ l1)))))
+	 (in (lambda (i j) (aref (aref dist i) j)))
+	 (mmin (lambda (&rest lst) (apply #'min (remove nil lst)))))
       (setf (aref (aref dist 0) 0) 0)
       (dolist (i (number-sequence 1 l1))
 	(dolist (j (number-sequence 1 l2))
 	  (setf (aref (aref dist i) j)
 		(+ (if (equal (aref s1 (1- i)) (aref s2 (1- j))) 0 1)
-		   (mmin (in (1- i) j) (in i (1- j)) (in (1- i) (1- j)))))))
-      (in l1 l2))))
+		   (funcall mmin (funcall in (1- i) j)
+			    (funcall in i (1- j))
+			    (funcall in (1- i) (1- j)))))))
+      (funcall in l1 l2)))
 
 (defun org-babel-combine-header-arg-lists (original &rest others)
   "Combine a number of lists of header argument names and arguments."
@@ -793,18 +795,18 @@ with a prefix argument then this is passed on to
 (defun org-babel-switch-to-session-with-code (&optional arg info)
   "Switch to code buffer and display session."
   (interactive "P")
-  (org-flet ((swap-windows
-	  ()
-	  (let ((other-window-buffer (window-buffer (next-window))))
-	    (set-window-buffer (next-window) (current-buffer))
-	    (set-window-buffer (selected-window) other-window-buffer))
-	  (other-window 1)))
-    (let ((info (org-babel-get-src-block-info))
-	  (org-src-window-setup 'reorganize-frame))
+  (let ((swap-windows
+	 (lambda ()
+	   (let ((other-window-buffer (window-buffer (next-window))))
+	     (set-window-buffer (next-window) (current-buffer))
+	     (set-window-buffer (selected-window) other-window-buffer))
+	   (other-window 1)))
+	(info (org-babel-get-src-block-info))
+	(org-src-window-setup 'reorganize-frame))
       (save-excursion
 	(org-babel-switch-to-session arg info))
-      (org-edit-src-code))
-    (swap-windows)))
+      (org-edit-src-code)
+      (funcall swap-windows)))
 
 (defmacro org-babel-do-in-edit-buffer (&rest body)
   "Evaluate BODY in edit buffer if there is a code block at point.
@@ -1268,31 +1270,32 @@ ALTS is a cons of two character options where each option may be
 either the numeric code of a single character or a list of
 character alternatives.  For example to split on balanced
 instances of \"[ \t]:\" set ALTS to '((32 9) . 58)."
-  (org-flet ((matches (ch spec) (if (listp spec) (member ch spec) (equal spec ch)))
-	 (matched (ch last)
-		  (if (consp alts)
-		      (and (matches ch (cdr alts))
-			   (matches last (car alts)))
-		    (matches ch alts))))
-    (let ((balance 0) (quote nil) (partial nil) (lst nil) (last 0))
-      (mapc (lambda (ch)  ; split on [], (), "" balanced instances of [ \t]:
-	      (setq balance (+ balance
-			       (cond ((or (equal 91 ch) (equal 40 ch)) 1)
-				     ((or (equal 93 ch) (equal 41 ch)) -1)
-				     (t 0))))
-	      (when (and (equal 34 ch) (not (equal 92 last)))
-		(setq quote (not quote)))
-	      (setq partial (cons ch partial))
-	      (when (and (= balance 0) (not quote) (matched ch last))
-		(setq lst (cons (apply #'string (nreverse
-						 (if (consp alts)
-						     (cddr partial)
-						   (cdr partial))))
-				lst))
-		(setq partial nil))
-	      (setq last ch))
-	    (string-to-list string))
-      (nreverse (cons (apply #'string (nreverse partial)) lst)))))
+  (let* ((matches (lambda (ch spec) (if (listp spec) (member ch spec) (equal spec ch))))
+	 (matched (lambda (ch last)
+		    (if (consp alts)
+			(and (funcall matches ch (cdr alts))
+			     (funcall matches last (car alts)))
+		      (funcall matches ch alts))))
+	 (balance 0) (last 0)
+	 quote partial lst)
+    (mapc (lambda (ch)  ; split on [], (), "" balanced instances of [ \t]:
+	    (setq balance (+ balance
+			     (cond ((or (equal 91 ch) (equal 40 ch)) 1)
+				   ((or (equal 93 ch) (equal 41 ch)) -1)
+				   (t 0))))
+	    (when (and (equal 34 ch) (not (equal 92 last)))
+	      (setq quote (not quote)))
+	    (setq partial (cons ch partial))
+	    (when (and (= balance 0) (not quote) (funcall matched ch last))
+	      (setq lst (cons (apply #'string (nreverse
+					       (if (consp alts)
+						   (cddr partial)
+						 (cdr partial))))
+			      lst))
+	      (setq partial nil))
+	    (setq last ch))
+	  (string-to-list string))
+    (nreverse (cons (apply #'string (nreverse partial)) lst))))
 
 (defun org-babel-join-splits-near-ch (ch list)
   "Join splits where \"=\" is on either end of the split."
@@ -1938,7 +1941,7 @@ code ---- the results are extracted in the syntax of the source
 	(setq results-switches
 	      (if results-switches (concat " " results-switches) ""))
 	(org-flet ((wrap (start finish)
-		     (goto-char end) (insert (concat finish "\n"))
+			 (goto-char end) (insert (concat finish "\n"))
 		     (goto-char beg) (insert (concat start "\n"))
 		     (goto-char end) (goto-char (point-at-eol))
 		     (setq end (point-marker)))

lisp/org-exp-blocks.el

@@ -172,71 +172,70 @@ which defaults to the value of `org-export-blocks-witheld'."
   (interactive)
   (save-window-excursion
     (let ((case-fold-search t)
-	  (types '())
-	  matched indentation type func
+	  (interblock (lambda (start end)
+			(mapcar (lambda (pair) (funcall (second pair) start end))
+				org-export-interblocks)))
+	  matched indentation type types func
 	  start end body headers preserve-indent progress-marker)
-      (org-flet ((interblock (start end)
-			 (mapcar (lambda (pair) (funcall (second pair) start end))
-				 org-export-interblocks)))
-	(goto-char (point-min))
-	(setq start (point))
-	(let ((beg-re "^\\([ \t]*\\)#\\+begin_\\(\\S-+\\)[ \t]*\\(.*\\)?[\r\n]"))
-	  (while (re-search-forward beg-re nil t)
-	    (let* ((match-start (copy-marker (match-beginning 0)))
-		   (body-start (copy-marker (match-end 0)))
-		   (indentation (length (match-string 1)))
-		   (inner-re (format "^[ \t]*#\\+\\(begin\\|end\\)_%s"
-				     (regexp-quote (downcase (match-string 2)))))
-		   (type (intern (downcase (match-string 2))))
-		   (headers (save-match-data
-			      (org-split-string (match-string 3) "[ \t]+")))
-		   (balanced 1)
-		   (preserve-indent (or org-src-preserve-indentation
-					(member "-i" headers)))
-		   match-end)
-	      (while (and (not (zerop balanced))
-			  (re-search-forward inner-re nil t))
-		(if (string= (downcase (match-string 1)) "end")
-		    (decf balanced)
-		  (incf balanced)))
-	      (when (not (zerop balanced))
-		(error "unbalanced begin/end_%s blocks with %S"
-		       type (buffer-substring match-start (point))))
-	      (setq match-end (copy-marker (match-end 0)))
-	      (unless preserve-indent
-		(setq body (save-match-data (org-remove-indentation
-					     (buffer-substring
-					      body-start (match-beginning 0))))))
-	      (unless (memq type types) (setq types (cons type types)))
-	      (save-match-data (interblock start match-start))
-	      (when (setq func (cadr (assoc type org-export-blocks)))
-		(let ((replacement (save-match-data
-				     (if (memq type org-export-blocks-witheld) ""
-				       (apply func body headers)))))
-		  ;; ;; un-comment this code after the org-element merge
-		  ;; (save-match-data
-		  ;;   (when (and replacement (string= replacement ""))
-		  ;;     (delete-region
-		  ;;      (car (org-element-collect-affiliated-keyword))
-		  ;;      match-start)))
-		  (when replacement
-		    (delete-region match-start match-end)
-		    (goto-char match-start) (insert replacement)
-		    (if preserve-indent
-			;; indent only the code block markers
-			(save-excursion
-			  (indent-line-to indentation) ; indent end_block
-			  (goto-char match-start)
-			  (indent-line-to indentation))	; indent begin_block
-		      ;; indent everything
-		      (indent-code-rigidly match-start (point) indentation)))))
-	      ;; cleanup markers
-	      (set-marker match-start nil)
-	      (set-marker body-start nil)
-	      (set-marker match-end nil))
-	    (setq start (point))))
-	(interblock start (point-max))
-	(run-hooks 'org-export-blocks-postblock-hook)))))
+      (goto-char (point-min))
+      (setq start (point))
+      (let ((beg-re "^\\([ \t]*\\)#\\+begin_\\(\\S-+\\)[ \t]*\\(.*\\)?[\r\n]"))
+	(while (re-search-forward beg-re nil t)
+	  (let* ((match-start (copy-marker (match-beginning 0)))
+		 (body-start (copy-marker (match-end 0)))
+		 (indentation (length (match-string 1)))
+		 (inner-re (format "^[ \t]*#\\+\\(begin\\|end\\)_%s"
+				   (regexp-quote (downcase (match-string 2)))))
+		 (type (intern (downcase (match-string 2))))
+		 (headers (save-match-data
+			    (org-split-string (match-string 3) "[ \t]+")))
+		 (balanced 1)
+		 (preserve-indent (or org-src-preserve-indentation
+				      (member "-i" headers)))
+		 match-end)
+	    (while (and (not (zerop balanced))
+			(re-search-forward inner-re nil t))
+	      (if (string= (downcase (match-string 1)) "end")
+		  (decf balanced)
+		(incf balanced)))
+	    (when (not (zerop balanced))
+	      (error "unbalanced begin/end_%s blocks with %S"
+		     type (buffer-substring match-start (point))))
+	    (setq match-end (copy-marker (match-end 0)))
+	    (unless preserve-indent
+	      (setq body (save-match-data (org-remove-indentation
+					   (buffer-substring
+					    body-start (match-beginning 0))))))
+	    (unless (memq type types) (setq types (cons type types)))
+	    (save-match-data (funcall interblock start match-start))
+	    (when (setq func (cadr (assoc type org-export-blocks)))
+	      (let ((replacement (save-match-data
+				   (if (memq type org-export-blocks-witheld) ""
+				     (apply func body headers)))))
+		;; ;; un-comment this code after the org-element merge
+		;; (save-match-data
+		;;   (when (and replacement (string= replacement ""))
+		;;     (delete-region
+		;;      (car (org-element-collect-affiliated-keyword))
+		;;      match-start)))
+		(when replacement
+		  (delete-region match-start match-end)
+		  (goto-char match-start) (insert replacement)
+		  (if preserve-indent
+		      ;; indent only the code block markers
+		      (save-excursion
+			(indent-line-to indentation) ; indent end_block
+			(goto-char match-start)
+			(indent-line-to indentation))	; indent begin_block
+		    ;; indent everything
+		    (indent-code-rigidly match-start (point) indentation)))))
+	    ;; cleanup markers
+	    (set-marker match-start nil)
+	    (set-marker body-start nil)
+	    (set-marker match-end nil))
+	  (setq start (point))))
+      (funcall interblock start (point-max))
+      (run-hooks 'org-export-blocks-postblock-hook))))
 
 ;;================================================================================
 ;; type specific functions

lisp/org-exp.el

@@ -2734,65 +2734,64 @@ INDENT was the original indentation of the block."
 	      (setq rtn (org-export-number-lines rtn 0 0 num cont rpllbl fmt))
 	      (cond
 	       ((and lang org-export-latex-listings)
-		(org-flet ((make-option-string
-			(pair)
-			(concat (first pair)
-				(if (> (length (second pair)) 0)
-				    (concat "=" (second pair))))))
-		  (let* ((lang-sym (intern lang))
-			 (minted-p (eq org-export-latex-listings 'minted))
-			 (listings-p (not minted-p))
-			 (backend-lang
-			  (or (cadr
-			       (assq
-				lang-sym
-				(cond
-				 (minted-p org-export-latex-minted-langs)
-				 (listings-p org-export-latex-listings-langs))))
-			      lang))
-			 (custom-environment
-			  (cadr
-			   (assq
-			    lang-sym
-			    org-export-latex-custom-lang-environments))))
-		    (concat
-		     (when (and listings-p (not custom-environment))
-		       (format
-			"\\lstset{%s}\n"
-			(mapconcat
-			 #'make-option-string
-			 (append org-export-latex-listings-options
-				 `(("language" ,backend-lang))) ",")))
-		     (when (and caption org-export-latex-listings-w-names)
-		       (format
-			"\n%s $\\equiv$ \n"
-			(replace-regexp-in-string "_" "\\\\_" caption)))
-		     (cond
-		      (custom-environment
-		       (format "\\begin{%s}\n%s\\end{%s}\n"
-			       custom-environment rtn custom-environment))
-		      (listings-p
-		       (format "\\begin{%s}\n%s\\end{%s}"
-			       "lstlisting" rtn "lstlisting"))
-		      (minted-p
-		       (format
-			"\\begin{minted}[%s]{%s}\n%s\\end{minted}"
-			(mapconcat #'make-option-string
-				   org-export-latex-minted-options ",")
-			backend-lang rtn)))))))
+		(let* ((make-option-string
+			(lambda (pair)
+			  (concat (first pair)
+				  (if (> (length (second pair)) 0)
+				      (concat "=" (second pair))))))
+		       (lang-sym (intern lang))
+		       (minted-p (eq org-export-latex-listings 'minted))
+		       (listings-p (not minted-p))
+		       (backend-lang
+			(or (cadr
+			     (assq
+			      lang-sym
+			      (cond
+			       (minted-p org-export-latex-minted-langs)
+			       (listings-p org-export-latex-listings-langs))))
+			    lang))
+		       (custom-environment
+			(cadr
+			 (assq
+			  lang-sym
+			  org-export-latex-custom-lang-environments))))
+		  (concat
+		   (when (and listings-p (not custom-environment))
+		     (format
+		      "\\lstset{%s}\n"
+		      (mapconcat
+		       make-option-string
+		       (append org-export-latex-listings-options
+			       `(("language" ,backend-lang))) ",")))
+		   (when (and caption org-export-latex-listings-w-names)
+		     (format
+		      "\n%s $\\equiv$ \n"
+		      (replace-regexp-in-string "_" "\\\\_" caption)))
+		   (cond
+		    (custom-environment
+		     (format "\\begin{%s}\n%s\\end{%s}\n"
+			     custom-environment rtn custom-environment))
+		    (listings-p
+		     (format "\\begin{%s}\n%s\\end{%s}"
+			     "lstlisting" rtn "lstlisting"))
+		    (minted-p
+		     (format
+		      "\\begin{minted}[%s]{%s}\n%s\\end{minted}"
+		      (mapconcat make-option-string
+				 org-export-latex-minted-options ",")
+		      backend-lang rtn))))))
 	       (t (concat (car org-export-latex-verbatim-wrap)
 			  rtn (cdr org-export-latex-verbatim-wrap)))))
-             ((eq org-export-current-backend 'ascii)
-              ;; This is not HTML or LaTeX, so just make it an example.
-              (setq rtn (org-export-number-lines rtn 0 0 num cont rpllbl fmt))
-              (concat caption "\n"
+	     ((eq org-export-current-backend 'ascii)
+	      ;; This is not HTML or LaTeX, so just make it an example.
+	      (setq rtn (org-export-number-lines rtn 0 0 num cont rpllbl fmt))
+	      (concat caption "\n"
 		      (concat
 		       (mapconcat
 			(lambda (l) (concat "  " l))
 			(org-split-string rtn "\n")
 			"\n")
-		       "\n")
-		      ))
+		       "\n")))
 	     (t
 	      (error "Don't know how to markup source or example block in %s"
 		     (upcase backend-name)))))

lisp/org-plot.el

@@ -144,7 +144,8 @@ and dependant variables."
 		   (dotimes (col (length (first table)))
 		     (setf collector (cons col collector)))
 		   collector)))
-	 row-vals (counter 0))
+	 (counter 0)
+	 row-vals)
     (when (>= ind 0) ;; collect values of ind col
       (setf row-vals (mapcar (lambda (row) (setf counter (+ 1 counter))
 			       (cons counter (nth ind row))) table)))
@@ -159,26 +160,26 @@ and dependant variables."
     ;; write table to gnuplot grid datafile format
     (with-temp-file data-file
       (let ((num-rows (length table)) (num-cols (length (first table)))
+	    (gnuplot-row (lambda (col row value)
+			   (setf col (+ 1 col)) (setf row (+ 1 row))
+			   (format "%f  %f  %f\n%f  %f  %f\n"
+				   col (- row 0.5) value ;; lower edge
+				   col (+ row 0.5) value))) ;; upper edge
 	    front-edge back-edge)
-	(org-flet ((gnuplot-row (col row value)
-			    (setf col (+ 1 col)) (setf row (+ 1 row))
-			    (format "%f  %f  %f\n%f  %f  %f\n"
-				    col (- row 0.5) value ;; lower edge
-				    col (+ row 0.5) value))) ;; upper edge
-	  (dotimes (col num-cols)
-	    (dotimes (row num-rows)
-	      (setf back-edge
-		    (concat back-edge
-			    (gnuplot-row (- col 1) row (string-to-number
-							(nth col (nth row table))))))
-	      (setf front-edge
-		    (concat front-edge
-			    (gnuplot-row col row (string-to-number
-						  (nth col (nth row table)))))))
-	    ;; only insert once per row
-	    (insert back-edge) (insert "\n") ;; back edge
-	    (insert front-edge) (insert "\n") ;; front edge
-	    (setf back-edge "") (setf front-edge "")))))
+	(dotimes (col num-cols)
+	  (dotimes (row num-rows)
+	    (setf back-edge
+		  (concat back-edge
+			  (funcall gnuplot-row (- col 1) row
+				   (string-to-number (nth col (nth row table))))))
+	    (setf front-edge
+		  (concat front-edge
+			  (funcall gnuplot-row col row
+				   (string-to-number (nth col (nth row table)))))))
+	  ;; only insert once per row
+	  (insert back-edge) (insert "\n") ;; back edge
+	  (insert front-edge) (insert "\n") ;; front edge
+	  (setf back-edge "") (setf front-edge ""))))
     row-vals))
 
 (defun org-plot/gnuplot-script (data-file num-cols params &optional preface)