Mail::Encodings.param_decode("This%20is%20fun",'us-ascii')#=> "This is fun"
str=Mail::Encodings.param_decode("This%20is%20fun",'iso-8559-1')str.encoding#=> 'ISO-8859-1' ## Only on Ruby 1.9
str#=> "This is fun"
94
95
96
# File 'lib/mail/encodings.rb', line 94defEncodings.param_decode(str,encoding)RubyVer.param_decode(str,encoding)end