From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Dokos <ndokos@gmail.com>
Subject: Re: Escape individual underscore?
Date: Tue, 03 Mar 2015 15:53:34 -0500
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Jacob Gerlach <jacobgerlach@gmail.com> writes:

> Hi List,
>
> I want to include a literal underscore in LaTeX export, like FOO_BAR. Right now I get:
> FOO$_{\text{BAR}}$
>
> Contrary to this stackexchange question, if I try to escape the underscore with a backslash, I get:
> FOO$\backslash$$_{\text{BAR}}
>
> I've found that I can set org-export-with-sub-superscripts to "{}" to avoid this problem, but I'd rather escape individual
> underscores on a case by case basis. Is this possible?
>

I don't think so.

FWIW, I always set

#+OPTIONS: ^:{}

in my files. That allows me to use a_b  for the majority of my use
cases, but still allows {subscripts} in the rare cases when I need them.

I'm not sure how useful it would be but maybe there should be a setting
to accommodate the inverse case: mostly subscripts a_b but allow literal
underscores using some additional markup.

Nick