%7C in my querystrings are turning in to %257C
$ curl -I "http://office.wikimedia.org/w/api.php?format=json&action=query&meta=siteinfo&siprop=namespaces%7Cnamespacealiases%7Cmagicwords%7Cfunctionhooks%7Cextensiontags%7Cgeneral%7Cinterwikimap%7Clanguages%7Cprotocols" HTTP/1.1 301 Moved Permanently Server: Apache X-Powered-By: HHVM/3.3.0-static Location: https://office.wikimedia.org/w/api.php?format=json&action=query&meta=siteinfo&siprop=namespaces%257Cnamespacealiases%257Cmagicwords%257Cfunctionhooks%257Cextensiontags%257Cgeneral%257Cinterwikimap%257Clanguages%257Cprotocols Content-Type: text/html; charset=iso-8859-1 [...]