[Orgmode] org-babel: [PATCH] allow emacs-lisp results to be pretty-printed

[Benjamin Andresen]

Hey there,

on irc (#org-mode) someone asked how one would go about to insert the
result of a emacs-lisp function without it being transformed into a
org-mode table.

I didn't see any other way, so I wrote a small patch that allows the
parameter :results to accept 'pp'. Is this the right way? And where
should this special parameter be documented?

diff --git a/contrib/babel/lisp/langs/org-babel-emacs-lisp.el 
b/contrib/babel/lisp/langs/org-babel-emacs-lisp.el
index 39f5cc7..60671ac 100644
--- a/contrib/babel/lisp/langs/org-babel-emacs-lisp.el
+++ b/contrib/babel/lisp/langs/org-babel-emacs-lisp.el
@@ -39,10 +39,14 @@
   "Execute a block of emacs-lisp code with org-babel.  This
 function is called by `org-babel-execute-src-block' via multiple-value-bind."
   (message "executing emacs-lisp code block...")
-  (save-window-excursion
-    (let ((print-level nil) (print-length nil))
-      (eval `(let ,(mapcar (lambda (var) `(,(car var) ',(cdr var))) vars)
-              ,(read (concat "(progn " body ")")))))))
+  (let ((results (cdr (assoc :results params))))
+    (save-window-excursion
+      (let ((print-level nil) (print-length nil))
+        (eval `(let ,(mapcar (lambda (var) `(,(car var) ',(cdr var))) vars)
+                 ,(read (concat "(progn " (if (string-match "pp$" results)
+                                              (concat "(pp " body ")")
+                                              body)
+                                ")"))))))))
 
 (provide 'org-babel-emacs-lisp)
 ;;; org-babel-emacs-lisp.el ends here

br,
benny