#!/bin/sh
sed -i.sedbak 's|||' $@
sed -i.sedbak 's|||g' $@
sed -i.sedbak 's|http://cdn.mathjax.org/mathjax/latest/MathJax.js|https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js|' $@
# First put and ... on the same line.
sed -i.sedbak -n '$!N;s|\s*\n\s*\([^<]*\)|\3 |' $@
rm -f *.sedbak