Rubygems proxy does not understand URL encoded QUERY_STRING

Recent Ruby gem bundler ( >= 1.11.0 ) uses URL encoding for QUERY_STRINGs, which forces NEXUS OSS to throw 404 exceptions for the long (more than 255 bytes ) URIs.

Example:
Before bundler 1.11 the GET request looked like this:

http://nexus1.local/content/groups/rubygems/api/v1/dependencies?gems=needle,jruby-pageant,echoe,net-ssh,spruz,hoe,json,net-scp,json_pure,minitest,ZenTest,termios,gemcutter,rubyforge,allison,rdoc,rake,highline,rcov,RubyInline,visionmedia-commander

Nexus OSS rubygems plugin used "," character to split the QUERY_STRINGS into distinct gems and stored them one by one on a filesystem.

After bundler 1.11.0 the GET request is URL encoded like
http://nexus1.local/content/groups/rubygems/api/v1/dependencies?gems=needle%2Cjruby-pageant%2Cechoe%2Cnet-ssh%2Cspruz%2Choe%2Cjson%2Cnet-scp%2Cjson_pure%2Cminitest%2CZenTest%2Ctermios%2Cgemcutter%2Crubyforge%2Callison%2Crdoc%2Crake%2Chighline%2Crcov%2CRubyInline%2Cvisionmedia-commander

Nexus OSS rubygems plugin does not decode the QUERY_STRING, and tries to store the whole QUERY_STRING as a long file, which is not allowed by a file system filename length constraint ( 255 bytes)