Re: [BABEL] BUG Re: Omitting try/catch blocks from tangled R code?

[Eric Schulte <schulte.eric@gmail.com>]

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>
> Apologies - I am still struggling with encryption......
>
> So here is my example:
>
> --8<---------------cut here---------------start------------->8---
> #+TITLE: single_to_multi
> #+DATE: <2013-10-15 Tue>
> #+AUTHOR: Rainer M. Krug
> #+EMAIL: Rainer@krugs.de
>
> ≈* Load R packages and data
> #+BEGIN_SRC R
> cat("Loading Data\n")
> #+END_SRC
> --8<---------------cut here---------------end--------------->8---
>
> I am using only org loaded and R enabled.
>
> C-c C-c on the block produces the error
>
> emacs version: 
> GNU Emacs 24.3.1 (x86_64-apple-darwin13.0.0, Carbon Version 1.6.0
> AppKit 1265) of 2014-02-13 on Rainers-MacBook-Pro-2.local
>
> org version:
> Org-mode version 8.2.5h (release_8.2.5h-837-gb296cc @
> /Users/rainerkrug/.emacs.d/org-mode/lisp/)
>

Thanks, a fixed version of the patch is attached.  If this works please
let me know and I'll apply.

Best,


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From d67248db79faf19e1bdcac0230c37670b6115bdd Mon Sep 17 00:00:00 2001
From: Eric Schulte <schulte.eric@gmail.com>
Date: Sun, 23 Mar 2014 20:01:37 -0600
Subject: [PATCH] only wrap R code graphics-file on execution

  Move this out of the expand-body function so that it is *never*
  applied to tangled code.
---
 lisp/ob-R.el | 40 +++++++++++++++++++++-------------------
 1 file changed, 21 insertions(+), 19 deletions(-)

diff --git a/lisp/ob-R.el b/lisp/ob-R.el
index 62aa7f2..780d99f 100644
--- a/lisp/ob-R.el
+++ b/lisp/ob-R.el
@@ -97,24 +97,15 @@ this variable.")
   "Expand BODY according to PARAMS, return the expanded body."
   (let ((graphics-file
 	 (or graphics-file (org-babel-R-graphical-output-file params))))
-    (mapconcat
-     #'identity
-     (let ((inside
-            (append
-             (when (cdr (assoc :prologue params))
-               (list (cdr (assoc :prologue params))))
-             (org-babel-variable-assignments:R params)
-             (list body)
-             (when (cdr (assoc :epilogue params))
-               (list (cdr (assoc :epilogue params)))))))
-       (if graphics-file
-           (append
-            (list (org-babel-R-construct-graphics-device-call
-                   graphics-file params))
-            inside
-            (list "},error=function(e){plot(x=-1:1, y=-1:1, type='n', xlab='', ylab='', axes=FALSE); text(x=0, y=0, labels=e$message, col='red'); paste('ERROR', e$message, sep=' : ')}); dev.off()"))
-         inside))
-     "\n")))
+    (mapconcat #'identity
+	       (append
+		(when (cdr (assoc :prologue params))
+		  (list (cdr (assoc :prologue params))))
+		(org-babel-variable-assignments:R params)
+		(list body)
+		(when (cdr (assoc :epilogue params))
+		  (list (cdr (assoc :epilogue params)))))
+	       "\n")))
 
 (defun org-babel-execute:R (body params)
   "Execute a block of R code.
@@ -127,7 +118,18 @@ This function is called by `org-babel-execute-src-block'."
 	   (colnames-p (cdr (assoc :colnames params)))
 	   (rownames-p (cdr (assoc :rownames params)))
 	   (graphics-file (org-babel-R-graphical-output-file params))
-	   (full-body (org-babel-expand-body:R body params graphics-file))
+	   (full-body
+	    (let ((inside
+		   (list (org-babel-expand-body:R body params graphics-file))))
+	      (mapconcat #'identity
+			 (if graphics-file
+			     (append
+			      (list (org-babel-R-construct-graphics-device-call
+				     graphics-file params))
+			      inside
+			      (list "},error=function(e){plot(x=-1:1, y=-1:1, type='n', xlab='', ylab='', axes=FALSE); text(x=0, y=0, labels=e$message, col='red'); paste('ERROR', e$message, sep=' : ')}); dev.off()"))
+			   inside)
+			 "\n")))
 	   (result
 	    (org-babel-R-evaluate
 	     session full-body result-type result-params
-- 
1.9.1


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-- 
Eric Schulte
https://cs.unm.edu/~eschulte
PGP: 0x614CA05D