Stefan Bienert wrote:
AUCTeX switched off? For me AUCTeX never left " as ". There are also
variables TeX-close-quote and TeX-open-quote.
I think I have AUCTeX on, since I have that "LaTeX" menu in the menubar.
How do I check what values are set in the quote variables?
You might first try starting emacs *without* your .emacs being loaded,
to see what behavior you notice, then as suggested by others on the
list, start uncommenting half of your .emacs at a time until the problem
reveals itself, and by doing that, you will have narrowed down what is
causing the issue.