Last modified: 2010-05-29 16:14:50 UTC
During the resolution of #6455 urldecode was dropped. I think this happened because in the comments someone falsely stated that both urldecode & urlencode were both built in functions already exposed and could subsequently dropped. There are three solutions, either make urldecode a built-in parser function, make a custom extension to expose it, or add it to ParserFunctions.
Fixed in r67044