=begin Rails ã®ä»¥ä¸ã®ã³ã¼ãã®çµæã 2.0 㨠2.1 ã¨ã§ç°ãªãããã§ãã ((<encode_params|URL:https://github.com/rails/rails/blob/3-2-stable/actionpack/lib/action_dispatch/http/parameters.rb#L51>)) 以ä¸ãæå°ã±ã¼ã¹ã§ãã $ ruby -v => ruby 2.1.0dev (2013-10-07 trunk 43160) [x86_64-darwin12.5.0] $ ruby -rstringio -e "Encoding.default_internal = Encoding::UTF_8; p StringIO.new(File.read('x.jpg')).readbyte" => 255 $ ruby -rstringio -e "En
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