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Re: [AUCTeX] Carets and underscores become red occasionally in math mode

From: Arash Esbati
Subject: Re: [AUCTeX] Carets and underscores become red occasionally in math mode .
Date: Mon, 13 Aug 2018 21:31:03 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1

"Kourosh Kalayeh" <address@hidden> writes:

> I have a minor question regarding the syntax highlighting in math mode
> that has been bugging me for a while.  I was wondering if anyone can
> help me with that.  Here it is,
> AUCTeX sometimes color the caret (^) and the underscore (_) red in
> math mode (which should normally be orange).  I could not find the
> reason of this behavior. For example look at the attached two
> screenshots, they are both from one document, in one of them
> everything is orange, and in the other one the caret and underscore
> signs are red.
> I use “align” environment for my equations.

Hi Kourosh,

I can't reproduce what you're describing.  This is how your examples
look for me.  N.B. I don't use any themes or any customization to AUCTeX

PNG image

Maybe you disable any themes (if any) and try it again.  For the next
time, please also send some code which can be copy&pasted; it is tedious
to type code.  Here the code I used:

--8<---------------cut here---------------start------------->8---


  \Phi(\lambda_1, \lambda_2, \lambda_3) = \sum_{n=1}^N
  \frac{\mu_n}{\alpha_n} (\lambda_1 ^ {\alpha_n} + \lambda_2 ^
  {\alpha_n} + \lambda_3 ^ {\alpha_n} -3),
increment $t$,
  \matr{\ddot{u}} |_{(t)} = \matr{M} ^ {-1 \cdot (\matr{P} - \matr{I})
--8<---------------cut here---------------end--------------->8---

Best, Arash

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