softwerkskammer/Agora — pull request #788 by heisee (2014-08-10 16:11:25+00:00)
Title: [tagcloud] url-encodes special chars in json strings that are embedded in the HTML,  sanitizes some chars from the interestets in the tag cloud

the code is just an educated guess, since I don't have examples from production data here, that I could use to test. But ' and " are filtered out now and the rest of the special characters are urlencoded.