Re: [O] "No definition for class" error in export to latex

[Nick Dokos]

Levy, Roger <address@hidden> wrote:

> and no .tex file output.  From within Aquamacs, I don't get this error, pre=
> sumably because I have the following in my .emacs file:
> 
> (add-to-list 'org-export-latex-classes
>            '("apa"
>              "\\documentclass{apa}
>                [NO-DEFAULT-PACKAGES]
>                \\usepackage{graphicx}
>                \\usepackage{apacite}"
>              ("\\section{%s}" . "\\section*{%s}")
>              ("\\subsection{%s}" . "\\subsection*{%s}")
>              ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
> ))
> 
> How can I make this modification of org-export-latex-classes from the comma=
> nd line?  I have tried putting the above content in a file ("$HOME/tmp/add.=
> el") and making the call
> 
> /Applications/Aquamacs.app/Contents/MacOS/Aquamacs -batch \
>     --load $HOME/tmp/add.el \
>     --visit=3Dtest-file.org \
>     --funcall org-export-as-latex-batch
> 
> but this gives me the error
> 
>   Symbol's value as variable is void: org-export-latex-classes
> 
> I would be very grateful for any suggestions!  This is GNU Emacs 23.3.1 (Aq=
> uamacs 2.2) and Org mode 7.5.

You should add to add.el some more initialization: you probably need to
set the load-path and require the org-latex package - something like
this, but you should more or less mimic the way you initialize org mode
in your .emacs:

--8<---------------cut here---------------start------------->8---
(add-to-list 'load-path (expand-file-name "~/src/emacs/org/org-mode/lisp")) 
;maybe
(add-to-list 'auto-mode-alist '("\\.\\(org\\|org_archive\\|txt\\)$" . org-mode))
(require 'org-install) ; maybe

(require 'org-latex)
...apa stuff from above...
--8<---------------cut here---------------end--------------->8---

Remember: -batch implies -q so your .emacs file is completely ignored:
you have to do any initialization you need in the add.el file.

> Incidentally, trying to export to HTML with
> 
> /Applications/Aquamacs.app/Contents/MacOS/Aquamacs -batch \
>     --visit=3Dtest-file.org \
>     --funcall org-export-as-html-batch
> 
> complains differently:=20
> 
> OVERVIEW
> Exporting...
> File mode specification error: (file-error "Cannot open load file" "html-he=
> lper-mode")
> Exporting...
> Exporting...
> File mode specification error: (file-error "Cannot open load file" "html-he=
> lper-mode")

I don't know who tries to load html-helper-mode but that's not even
present in my setup.

> Saving file /tmp/test-file.html...
> Wrote /tmp/test-file.html
> HTML export done, pushed to kill ring and clipboard
> 
> but it actually does produce a sensible html file.
> 

Probably because the autoload for org-export-as-html-batch is
in the default path of your emacs.

Nick