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From: Eric S Fraga <e.fraga@ucl.ac.uk>
Subject: Re: [PATCH] ox-latex: Add scrartcl LaTeX class
Date: Thu, 24 Sep 2015 11:04:28 +0100
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To: Ista Zahn <istazahn@gmail.com>
Cc: emacs-orgmode Mailinglist <emacs-orgmode@gnu.org>, Sebastian Boehm <sebastian@sometimesfood.org>

On Wednesday, 23 Sep 2015 at 14:27, Ista Zahn wrote:
> On Wed, Sep 23, 2015 at 2:16 PM, Eric S Fraga <e.fraga@ucl.ac.uk> wrote:

[...]

>> One solution, but not an ideal one, is to use file local variables to
>> define org-latex-classes (and any other variables) as appropriate for
>> the document.  It's not ideal because unfortunately most of org's
>> variables (as well as many of emacs's own) are "global" and hence affect
>> the functionality of org visiting other buffers.  I find myself having
>> separate emacs instances for some org files for this reason.
>
> Doesn't "setq-local" solve this problem?

Seems to!  Thanks.  I have done the following:
#+begin_src org
  ,#+title: Testing setq-loccal
  ,#+latex_class: esftest
  ,* settings                                                                      :noexport:
  ,#+name: startup
  ,#+begin_src emacs-lisp :results none
    (setq-local org-latex-classes '(("esftest" "\\documentclass{scrartcl}" ("\\section*{%s}" . "\\section*{%s}") ("\\subsection{%s}" . "\\subsection*{%s}") ("\\subsubsection{%s}" . "\\subsubsection*{%s}") ("\\paragraph{%s}" . "\\paragraph*{%s}") ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))))
  ,#+end_src

  # Local Variables:
  # eval: (esf/execute-startup-block)
  # End:
#+end_src
where esf/execute-startup-block executes the src block named "startup".

The issue is complicated by the fact that exporters generate a new
buffer which has its own variables (hence the use of #+bind:) so some
variables should be set using bind but others potentially using
setq-local.

Thanks again,
eric
-- 
: Eric S Fraga (0xFFFCF67D), Emacs 24.5.1, Org release_8.3.1-203-g4ca3d3