From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: Bug: [regression] superscript not available after
 non-alphanumeric [8.2.7b (8.2.7b-dist @
 /home/benda/gnto/usr/share/emacs/site-lisp/org-mode/)]
Date: Fri, 27 Jun 2014 13:55:34 +0200
Message-ID: <878uoiy3bd.fsf@nicolasgoaziou.fr>
References: <86simqocpz.fsf@moguhome00.in.awa.tohoku.ac.jp>
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In-Reply-To: <86simqocpz.fsf@moguhome00.in.awa.tohoku.ac.jp>
	(heroxbd@gentoo.org's message of "Fri, 27 Jun 2014 19:42:32 +0900")
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To: heroxbd@gentoo.org
Cc: emacs-orgmode@gnu.org

Hello,

heroxbd@gentoo.org writes:

> #+begin_org
>   \ce{^{238}U}, ^2H
> #+end_org
>
> is exported as
>
> #+begin_latex
>   \ce\{$^{\text{238}}$U\}, \^{}2H
> #+end_latex
>
> on org-mode 8.2.7b

If you want to insert raw LaTeX in an Org buffer, then \ce{^{238}U} is
invalid because you cannot nest braces. You can write instead:

  @@latex:\ce{^{238}U}@@

or you can define a macro, e.g.,:

  #+MACRO: ce @@latex:\ce{$1}@@

and then use

  {{{ce(^{238}U)}}}

Also, ^2H is not recognized as superscript _on purpose_. Per Org syntax,
you have to add a non-blank character before the caret. Otherwise, there
would be ambiguity between underline (e.g., _under_) and subscript
(_under). And superscript syntax follows subscript's.

In this case, you can probably use a math snippet, e.g.,

  \(^2\)H


Regards,

-- 
Nicolas Goaziou