DITAA and Unicode characters [babel]

[Juan Pechiar <juan@pechiar.com>]

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Hi,

Out of the box, ob-ditaa does not work with non-ascii characters.

I looked into the problem in order to answer a user request on
StackOverflow (yes, there are org-mode questions posted there instead
of here!).

http://stackoverflow.com/questions/5758498/problem-with-ditaa-and-foreign-characters-in-org-mode

In order for ditaa to accept UTF-8 characters in the input file, it
must be called with the corresponding property setting:

   java -Dfile.encoding=UTF-8 -jar path/to/ditaa.jar ...

Attached is a dirty patch for hard-coding this property setting.

I don't know what the proper way of setting this property should be:

 - somehow setting it system-wide (any Java guru out there?).

 - or adding a customization to ob-ditaa.el for this property

 - or adding magic to ob-ditaa so that the same encoding of the buffer
   gets set to this Java property

I can help with the implementation if given some feedback on the above
options.

Regards,
.j.

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diff --git a/lisp/ob-ditaa.el b/lisp/ob-ditaa.el
index 20b5c42..dc17a4d 100644
--- a/lisp/ob-ditaa.el
+++ b/lisp/ob-ditaa.el
@@ -55,7 +55,7 @@ This function is called by `org-babel-execute-src-block'."
 		    (cdr (assoc :file params))))
 	 (cmdline (cdr (assoc :cmdline params)))
 	 (in-file (org-babel-temp-file "ditaa-"))
-	 (cmd (concat "java -jar "
+	 (cmd (concat "java -Dfile.encoding=UTF-8 -jar "
 		      (shell-quote-argument
 		       (expand-file-name org-ditaa-jar-path))
 		      " " cmdline