- Run TeX-auto-generate-global in emacs only once if auctex or
TeXLive becomes updated to generate all auto lisp files.

- Update to 13.2
• AUCTeX no longer refuses to insert dollar sign when you type ‘$’ at
point where AUCTeX thinks the current math mode didn’t start with
dollar(s). AUCTeX assumes the user knows that it isn’t in math
mode actually.
You can keep the former behavior by enabling the new customize
option ‘TeX-refuse-unmatched-dollar’.
* AUCTeX supports completion-at-point of macro and environment
arguments in LaTeX buffers. The responsible function recognizes
the argument position and extracts the corresponding candidates
from the variables ‘TeX-symbol-list’ and ‘LaTeX-environment-list’.
* AUCTeX underlines the argument of macros which produce underlined
text in the final product with ‘font-latex-underline-face’. The
corresponding keyword class is called ‘underline-command’. See the
section for fontification of macros if you dislike this feature and
wish to deactivate it.
* Support for the Sioyek document viewer is added.
* AUCTeX now requires GNU Emacs 25.1 or higher.
* AUCTeX tracks the change in Emacs where initial inputs in the
minibuffer during queries are getting phased out. Queries for the
mandatory arguments of macros and environments are adjusted where
applicable. The value which will be used after hitting ‘RET’
without other input is shown in the prompt in parentheses prefixed
with ‘default’. For this change the signature of the function
‘TeX-arg-length’ is altered. The old argument list was:
(defun TeX-arg-length (optional &optional prompt
initial-input definition default)