more lightening

lisp/ob-exp.el

@@ -95,15 +95,10 @@ none ----- do not display either code or results upon export"
   (message "org-babel-exp processing...")
   (save-excursion
     (goto-char (match-beginning 0))
-    (let* ((raw-header (match-string 3))
-	   (info (org-babel-get-src-block-info))
+    (let* ((info (org-babel-get-src-block-info 'light))
 	   (lang (nth 0 info))
-	   (lang-headers
-	    (intern (concat "org-babel-default-header-args:" lang)))
-	   (raw-params
-	    (org-babel-parse-header-arguments
-	     (org-babel-clean-text-properties
-	      (mapconcat #'identity (cdr (split-string raw-header)) " "))))
+	   (raw-params (nth 2 info))
+	   (lang-headers (intern (concat "org-babel-default-header-args:" lang)))
 	   (heading (nth 4 (ignore-errors (org-heading-components))))
 	   (link (when org-current-export-file
 		   (org-make-link-string
@@ -114,10 +109,10 @@ none ----- do not display either code or results upon export"
       ;; bail if we couldn't get any info from the block
       (when info
 	(when link
-	    ;; resolve parameters in the original file so that headline
-	    ;; and file-wide parameters are included
-	    ;; attempt to go to the same heading in the original file
-	    (set-buffer (get-file-buffer org-current-export-file))
+	  ;; resolve parameters in the original file so that
+	  ;; headline and file-wide parameters are included, attempt
+	  ;; to go to the same heading in the original file
+	  (set-buffer (get-file-buffer org-current-export-file))
 	  (save-restriction
 	    (condition-case nil
 		(org-open-link-from-string link)
@@ -138,8 +133,8 @@ none ----- do not display either code or results upon export"
 		       (string= "yes" (cdr (assoc :noweb (nth 2 info)))))
 		  (org-babel-expand-noweb-references
 		   info (get-file-buffer org-current-export-file))
-		(nth 1 info))))
-      (org-babel-exp-do-export info 'block))))
+		(nth 1 info)))
+	(org-babel-exp-do-export info 'block)))))
 
 (defun org-babel-exp-inline-src-blocks (start end)
   "Process inline source blocks between START and END for export.

lisp/ob-lob.el

@@ -50,7 +50,7 @@ To add files to this list use the `org-babel-lob-ingest' command."
   (interactive "f")
   (let ((lob-ingest-count 0))
     (org-babel-map-src-blocks file
-      (let* ((info (org-babel-get-src-block-info))
+      (let* ((info (org-babel-get-src-block-info 'light))
 	     (source-name (nth 4 info)))
 	(when source-name
 	  (setq source-name (intern source-name)

lisp/ob-ref.el

@@ -61,11 +61,8 @@
   "Convert PARAMS to variable names and values.
 Takes a parameter alist, and return an alist of variable names,
 and the emacs-lisp representation of the related value."
-  (let ((assignments
-	 (delq nil (mapcar (lambda (pair) (if (eq (car pair) :var) (cdr pair))) params)))
-	(others
-         (delq nil (mapcar (lambda (pair) (unless (eq :var (car pair)) pair)) params))))
-    (mapcar (lambda (assignment) (org-babel-ref-parse assignment)) assignments)))
+  (mapcar (lambda (el) (org-babel-ref-parse (cdr el)))
+	  (org-babel-get-header params :var)))
 
 (defvar org-babel-ref-split-regexp
   "[ \f\t\n\r\v]*\\(.+?\\)[ \f\t\n\r\v]*=[ \f\t\n\r\v]*\\(.+\\)[ \f\t\n\r\v]*")

lisp/ob.el

@@ -138,34 +138,51 @@ remove code block execution from the C-c C-c keybinding."
    "{\\([^\f\n\r\v]+?\\)}\\)")
   "Regexp used to identify inline src-blocks.")
 
-(defun org-babel-get-src-block-info ()
+(defun org-babel-get-header (params key &optional others)
+  "Select only header argument of type KEY from a list.
+Optional argument OTHERS indicates that only the header that do
+not match KEY should be returned."
+  (delq nil (mapcar
+	     (lambda (p) (when ((if others #'not #'identity) (eq (car p) key)) p))
+	     params)))
+
+(defun org-babel-get-src-block-info (&optional light)
   "Get information on the current source block.
 
+Optional argument LIGHT does not resolve remote variable
+references; a process which could likely result in the execution
+of other code blocks.
+
 Returns a list
- (language body header-arguments-alist switches name function-args indent)."
-  (let ((case-fold-search t) head info name args indent)
+ (language body header-arguments-alist switches name indent)."
+  (let ((case-fold-search t) head info name indent)
+    ;; full code block
     (if (setq head (org-babel-where-is-src-block-head))
-        (save-excursion
+	(save-excursion
 	  (goto-char head)
 	  (setq info (org-babel-parse-src-block-match))
 	  (setq indent (car (last info)))
 	  (setq info (butlast info))
 	  (forward-line -1)
-	  (when (and (looking-at org-babel-src-name-w-name-regexp)
-		     (setq name (match-string 2)))
-	    (setq name (org-babel-clean-text-properties name))
-	    (when (setq args (match-string 4))
-	      (setq args (mapcar
-			  (lambda (ref) (cons :var ref))
-			  (org-babel-ref-split-args args)))
-	      (setf (nth 2 info)
-		    (org-babel-merge-params args (nth 2 info)))))
-	  (append info (list name args indent)))
-      (if (save-excursion ;; inline source block
-            (re-search-backward "[ \f\t\n\r\v]" nil t)
-            (looking-at org-babel-inline-src-block-regexp))
-          (org-babel-parse-inline-src-block-match)
-        nil))))
+	  (when (looking-at org-babel-src-name-w-name-regexp)
+	    (setq name (org-babel-clean-text-properties (match-string 2)))
+	    (when (match-string 4)
+	      (setf (nth 2 info) ;; merge functional-syntax vars and header-args
+		    (org-babel-merge-params
+		     (mapcar (lambda (ref) (cons :var ref))
+			     (org-babel-ref-split-args (match-string 4)))
+		     (nth 2 info)))))
+	  (append info (list name indent)))
+      ;; inline source block
+      (when (save-excursion (re-search-backward "[ \f\t\n\r\v]" nil t)
+			    (looking-at org-babel-inline-src-block-regexp))
+	(setq info (org-babel-parse-inline-src-block-match))))
+    ;; resolve variable references
+    (when (and info (not light))
+      (setf (nth 2 info)
+	    (append (org-babel-ref-variables (nth 2 info))
+		    (org-babel-get-header (nth 2 info) :var 'other))))
+    info))
 
 (defun org-babel-confirm-evaluate (info)
   "Confirm evaluation of the code block INFO.