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When I edit markdown in emacs I use markdown-mode. However I often have to type some math formulas in the markdown file (processed by mathjax). However for those math parts markdown mode is not very comfortable.

Is there a way to make emacs automatically switch to latex (auctex) mode (locally) when the point is between two $ signs for example ($\mathbb{R}$) or between two double $ signs for example

$$
\begin{align}
a = b
\end{align}
$$

?

Edit I also want to have the font locking of the "local" mode.

Edit 2 I tried mmm-mode, but this doesn't handle font-locking correctly. I guess that multi-mode.el or MuMaMo-mode might be what I want. But I didn't figure out how to use this in my examples. So, if it is possible to do what I want with one of this or with another mode, it would be great if someone could post detailed steps howto apply it in my case as an answer.

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You should try Org Mode because it supports embedded latex with latex fragments that you can preview. Though Org Mode is a bit more than a markup language. –  Daimrod Jul 7 '12 at 16:19
    
@Daimrod How can I use org-mode to write markdown?? –  student Jul 8 '12 at 16:50
    
@student use org mode and export to markdown - orgmode.org/manual/Markdown-export.html . You can have multiple different languages in a markdown document.... –  Ulrich Dangel Jun 10 '13 at 22:07
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1 Answer

Emacs has several packages that help switching quickly and automatically between modes. The Emacs wiki has a page on multiple modes.

Mmm-mode is a common choice, but I expect each of the possibilities to have its ups and downs.

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Thanks. I will try it. Can you add some details how to configure and use it in my case (I just installed mmm-mode via aptitude, what should I do next?) –  student Jul 8 '12 at 18:16
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