From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sebastien Vauban <sva-news-D0wtAvR13HarG/iDocfnWg@public.gmane.org>
Subject: Re: utf8x and org-mode 8
Date: Mon, 25 Aug 2014 09:55:20 +0200
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Daniel Szmulewicz wrote:
> I understand that org-latex derives the encoding from the buffer.=20
> In the ".tex=E2=80=9D file produced by the exporter, I see this line:
> \usepackage[utf8]{inputenc}
>
> However, I would like to set it to:
> \usepackage[utf8x]{inputenc}
>
> I need to account for special French spacing characters: =E2=80=9Cespaces=
 ins=C3=A9cables."=20
>
> Old tricks to achieve this with previous org-mode versions don=E2=80=99t =
seem to work.=20
> What is the best way to export an org buffer and have it set to utf8x wit=
h the latest org-mode version?

AFAICT, when using the `utf8' option to `inputenc' (and not `utf8x'
which should be avoided, as it uses `ucs' which is no longer
maintained), we have 2 solutions to support the UTF-8 non-breaking
space:

- Convert it in Org mode, when exporting (via a filter)

  #+begin_src emacs-lisp
    ;; filter for non-breaking spaces
    (defun leuven--latex-filter-nbsp (text backend info)
      "Convert non-breaking spaces when exporting to LaTeX/Beamer."
      (when (memq backend '(latex beamer))
        (replace-regexp-in-string "=C2=A0" "~" text)))

    (add-to-list 'org-export-filter-plain-text-functions
                 'leuven--latex-filter-nbsp)
  #+end_src

- or Convert it in LaTeX:

  #+begin_src emacs-lisp :tangle no
    ;; convert `nbsp' to its LaTeX equivalent
    (add-to-list 'org-latex-packages-alist
                 (concat "\\ifdefined\\DeclareUnicodeCharacter{"
                         "\\DeclareUnicodeCharacter{00A0}{~}"
                         "}\\fi") t)
  #+end_src

I think that the first one is "better", though its problem is that,
being done by a filter (hence, on the user-side), sharing an Org file is
not easy anymore (without sharing the filter to be added to the
personal .emacs file).

Best regards,
  Seb

--=20
Sebastien Vauban