I’m using Emacs as a LaTeX editor, with the AUCTeX mode. One document I’m authoring is written in English with some paragraphs in Hebrew or Greek. 

The issue I have is with mixing some neutral characters that need to be LTR, inside a paragraph which is RTL. An example of this is the slash (i.e. ‘\’) character used by LaTeX to signal its commands. Inside a RTL paragraph I ideally want to force Emacs to always interpret the slash character, as well as the open and close brackets (i.e. {}) as LTR. 

This is not what happens at the moment. Here I have a visual representation of the problem: http://emacs.stackexchange.com/questions/19696/handling-left-to-right-inside-right-to-left-paragraphs-using-emacs-and-auctex.

Is it possible to whitelist some characters that should always be interpreted as LTR?

Thanks