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

[Kourosh Kalayeh]

On 22 Aug 2018, at 21:04, Ivan Andrus wrote:

> Sorry, that's in the cl-extra package.  You can change it to cl-map 
> and it should work (it's autoloaded).  Alternately you can run 
> (require 'cl) before running the function.  I've had that in my .emacs 
> for so long, that I forgot about it.  I should have tested in emacs 
> -q.  I apologize.

Ivan and Arash,

Thank you for your emails.

Ivan,
I was able to get information about the font faces using Arash’s tip 
(i.e., C-u C-x =).

Using the above, I was able to check font faces of normally and 
abnormally behaved carets and underscores;

Normal (regular orange color):  font-latex-math-face
Abnormal (red color): font-latex-script-char-face font-latex-math-face

So based on the above, it seems that for some reason AUCTeX uses 
font-latex-script-char-face for some of the carets and underscores.

Thanks
Kourosh