Hi Keita,

Ikumi Keita <ikumi@ikumi.que.jp> writes:

> It seems dubious to include `TeX-mode' here because it is used for only
> a parent of other AUCTeX major modes and isn't meant for a major mode of
> an actual buffer. Unless the user explicitly does M-x TeX-mode, no
> buffers would be in `TeX-mode'.

Yes, my fault, thanks for catching this.  Next try is attached.

Best, Arash