Question

When passing arguments to code block that exports results Org-mode fails to export with the error “Wrong type argument: listp”. How can I fix this?

Here is an example. When it is exported it gives the error ‘Wrong type argument: listp, “bar”‘.

#+TITLE: Example

#+SOURCE: example-one
#+BEGIN_SRC emacs-lisp :exports results
(setq foo "bar")
#+END_SRC

#+SOURCE: example-two
#+BEGIN_SRC emacs-lisp :exports results :var x=example-one
(setq foo (concat x x))
#+END_SRC

I am running Org-mode 7.6 in Emacs 23.3.1.

Answer 1

This issue might simply be with the older copy of Org that you’re running. Tested it today with a recent git pull and get the results below. As pmr suggested, you might have better luck asking on the mailing list ( [e-mail] ) since there might be someone there who would know what caused this issue and what might have been changed to resolve it in later versions.

The features and examples discussed in the manual are based on the current release version (7.8.03 in this case) so they will not always be compatible with older versions. Does the info-node in your version indicate that it should work?

These 2 commands will show you the associated info-nodes for that section of the Org Manual

; The node itself
(Info-goto-node "(org) var") 
; Parent node, in case the first node isn't present
(Info-goto-node "(org) Working With Source Code") 

Test Results

Org

* Test variable passing
Headlines are created to split the code blocks apart.  When trying to eval on export I'm getting a syntax read error which was reported here: http://lists.gnu.org/archive/html/emacs-orgmode/2012-01/msg00993.html 

** Ex 1
#+name: example-one
#+BEGIN_SRC emacs-lisp :exports results
(setq foo "bar")
#+END_SRC

** Ex 2

#+name: example-two
#+BEGIN_SRC emacs-lisp :exports results :var x=example-one
(setq foo (concat x x))
#+END_SRC

Latex

\vspace*{1cm}
Headlines are created to split the code blocks apart.  When trying to eval on export I'm getting a syntax read error which was reported here: \href{http://lists.gnu.org/archive/html/emacs-orgmode/2012-01/msg00993.html}{http://lists.gnu.org/archive/html/emacs-orgmode/2012-01/msg00993.html} 

\section{Ex 1}
\label{sec-1}



\begin{verbatim}
 bar
\end{verbatim}
\section{Ex 2}
\label{sec-2}




\begin{verbatim}
 barbar
\end{verbatim}