[AUCTeX-devel] Commented out displaymath will still activate math environment

[Jorge Adriano Branco Aires]

Hello, I'm using xemacs with auctex.
I noticed that if I write,

%\begin{displaymath}

even though it's commented out, latex mode will act as if I'm inside a
math environment and not let me insert $.

In case it matters here are the versions of the relevant packages I'm using:
emacs-auctex-el-11.84-3.inf.noarch
xemacs-21.5.27-8.inf.i386

Thanks!
Jorge