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Re: Bug: no math-mode detection for align-environment [9.3.7 (9.3.7-13-g

From: Stefi
Subject: Re: Bug: no math-mode detection for align-environment [9.3.7 (9.3.7-13-ge62ca4-elpaplus @ /home/stefi/.emacs.d/elpa/org-plus-contrib-20200713/)]
Date: Sat, 29 Aug 2020 15:27:09 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

Great news! So this problem will just go away by itself then. Until then
I will use the texmathp-tex-commands solution as a workaround.

Thank you everyone for sharing your thoughts!

On 8/28/20 8:55 AM, Carsten Dominik wrote:
> Hi,
> AUCTeX has taken back this change, realizing that texmathp.el is also
> used in contexts where the mechanisms of AUCTeX to find out about LaTeX
> packages being used does not work.  I do think this is already fixed in
> the latest AUCTeX version.  At least it is fixed in their git.
> - Carsten
> Carsten
> On Fri, Aug 28, 2020 at 7:09 AM Kyle Meyer <kyle@kyleam.com
> <mailto:kyle@kyleam.com>> wrote:
>     Stefi writes:
>     > It might be a change to texmathp.el. It is part of Auctex and
>     checks if
>     > math mode is on or off. I could not find align environment in the list
>     > of default environments. Maybe that has changed.
>     >
>     > However, I added align and align* to "Texmathp Tex Commands" from the
>     > customize browser (open a .tex file to customize auctex).
>     Tab-expansion
>     > is working now. Can anyone confirm?
>     >
>     > In my .emacs, it added to custom-set-variables:
>     > '(texmathp-tex-commands (quote (("align*" env-on) ("align" env-on))))
>     Yes, that results in expansion on my end as well.
>     It looks like this issue was introduced with AUCTeX's 91701704 (Delete
>     overhead in extending font lock range of math expression, 2020-06-11).
>     If you're getting AUCTeX from ELPA, the regression is included the
>     current version there (12.2.4, 2020-06-29).
>     At the start of this month, it was fixed in f04a508f (Restore all math
>     environments in texmathp.el, 2020-08-01), so the issue should go away
>     with the next update that lands on ELPA.

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