From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Harkins <jamshark70@gmail.com>
Subject: Problem writing my first export filter
Date: Wed, 21 Aug 2013 09:55:30 +0800
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To: orgmode <emacs-orgmode@gnu.org>

Referring to [1]:

I just tried the following, so that I could maintain a list of special cases where org's default latex export doesn't do what I want.

(setq hjh-org-latex-macros '(("`em" "'em")))

(defun hjh-latex-filter-macros (text backend info)
  "hjh: Replace special cases listed in hjh-org-latex-macros."
  (when (org-export-derived-backend-p backend 'latex)
    (dolist (element hjh-org-latex-macros)
      (replace-regexp-in-string (car element) (car (cdr element)) text))))

First I tried

(setq org-export-filter-plain-text-functions '(hjh-latex-filter-macros))

-- no result: `em passes through unchanged. So then I tried clearing plain-text-functions and using final-output-functions instead. Same thing: the filter didn't do anything.

I suppose I'm missing something simple.

Thanks in advance for advice,
hjh

[1] http://article.gmane.org/gmane.emacs.orgmode/75607