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 <k...@kyleam.com > <mailto:k...@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. >
