MathJax

If I request MathJax output from rst2html,
it is included as an http request.
This means the content won't display (by default)
in browsers that care about mixed content if the
page is securely served.  (Examples: FireFox, Edge.)

As I understand it, MathJax recommends using https:
http://mathjax.readthedocs.org/en/latest/misc/faq.html#how-do-i-access-the-mathjax-cdn-using-a-https-secure-connection

Can this be changed in the source (rather than
relying on user configuration)?
I am grateful for the configuration option, but it seems
the default is wrong?

Thanks,
Alan Isaac

PS I am confused about why the documentation
http://docutils.sourceforge.net/docs/user/config.html#math-output
reads::

   math-output: MathJax file:/usr/share/javascript/mathjax/MathJax.js

instead of::

   --math-output="MathJax file:/usr/share/javascript/mathjax/MathJax.js"

In my experience, the quotes are essential for this to work.

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