I'm trying to whitelist a custom attribute that is not supposed to have
any value in XSS protection config so that when I enter something like
in text editor, the new-attribute does not get
stripped. But it seems like all the attributes defined in the configs
need a regex filter rule and therefore the attribute in the text editor
needs a value assigned in order to not to be stripped. Is there any way
I can achieve this? to have and not get stripped?