Harmless bug in validator.js cdata blacklisted regexp #7246
Description
https://github.com/ampproject/amphtml/blob/master/validator/engine/validator.js#L1643
var blacklistedCdataRegexStr = '';
if (tagSpec.cdata !== null) {
for (const blacklist of tagSpec.cdata.blacklistedCdataRegex) {
blacklistedCdataRegexStr += blacklist + '|';
}
}blacklistedCdataRegexStr will contain something like this:
"[object Object]|[object Object]|[object Object]|"
Consider last vertical bar!