Eric-
There is a bug in ob-ruby --- if an literal 'hline is passed into
(e.g., :hline no) a ruby block, the execution fails due to an
incorrect datatype (this is not an issue in any other language). The
patch provided in
http://lists.gnu.org/archive/html/emacs-orgmode/2013-08/msg00316.html
(and reattached here), applies the solution used in ox-python to
handle the issue. An alternative solution is ok too :).
I would be glad to apply the patch myself, but since you are the owner
of the file i would appreciate you ok before proceeding.
tia,
rick
From 4ae86a04680bcf671d43bb0b70bfddd083b743b2 Mon Sep 17 00:00:00 2001
From: Rick Frankel <r...@rickster.com>
Date: Thu, 15 Aug 2013 14:43:51 -0400
Subject: [PATCH] Handle literal 'hline arguments passed to ruby. Solution
shamelessly copied from ob-python.
* lisp/ob-ruby.el: New customizations `org-babel-ruby-hline-to' and
`org-babel-ruby-nil-to'
(org-babel-ruby-var-to-ruby): Convert incoming 'hlines.
(org-babel-ruby-table-or-string): Convert outgoing nils.
---
lisp/ob-ruby.el | 26 ++++++++++++++++++++++++--
1 file changed, 24 insertions(+), 2 deletions(-)
diff --git a/lisp/ob-ruby.el b/lisp/ob-ruby.el
index 20fb418..d15d288 100644
--- a/lisp/ob-ruby.el
+++ b/lisp/ob-ruby.el
@@ -50,6 +50,20 @@
(defvar org-babel-ruby-command "ruby"
"Name of command to use for executing ruby code.")
+(defcustom org-babel-ruby-hline-to "nil"
+ "Replace hlines in incoming tables with this when translating to ruby."
+ :group 'org-babel
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'string)
+
+(defcustom org-babel-ruby-nil-to 'hline
+ "Replace 'nil' in ruby tables with this before returning."
+ :group 'org-babel
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'string)
+
(defun org-babel-execute:ruby (body params)
"Execute a block of Ruby code with Babel.
This function is called by `org-babel-execute-src-block'."
@@ -115,13 +129,21 @@ Convert an elisp value into a string of ruby source code
specifying a variable of the same value."
(if (listp var)
(concat "[" (mapconcat #'org-babel-ruby-var-to-ruby var ", ") "]")
- (format "%S" var)))
+ (if (equal var 'hline)
+ org-babel-ruby-hline-to
+ (format "%S" var))))
(defun org-babel-ruby-table-or-string (results)
"Convert RESULTS into an appropriate elisp value.
If RESULTS look like a table, then convert them into an
Emacs-lisp table, otherwise return the results as a string."
- (org-babel-script-escape results))
+ ((lambda (res)
+ (if (listp res)
+ (mapcar (lambda (el) (if (equal el 'nil)
+ org-babel-ruby-nil-to el))
+ res)
+ res))
+ (org-babel-script-escape results)))
(defun org-babel-ruby-initiate-session (&optional session params)
"Initiate a ruby session.
--
1.8.0
