In my wiki installation, I have edited the sanitizer to allow use of as much HTML as possible, but there are some tags I cannot add successfully due to strange characters.
adding '!DOCTYPE' returns <!DOCTYPE as it would do if the tag was not allowed.
the attribute 'http-equiv' gets removed, presumably because of the dash.
Do these characters need to be escaped or written in a different way? I've tried various methods without success. Hope you can help.
Regards,
Bob Jones