bigfatfrodo

Looks good, many thanks. Can I continue using this version until a new one is released officialy?

There is definitely an improvement. Now the backslashes are not escaped anymore. But the semicolon still is.

In the no-cache version, this string looks like this:
\\\;\\p

With the updated wp-fastest-cache version, the source is changed to this:
\\;\\p

This causes KaTex to display the semicolon, where it should otherwise be just an empty line.

Thanks!

Thank you for the quick response. I’ll give it a try.