vendor/rails/activesupport/lib/active_support/core_ext/uri.rb

   1 if RUBY_VERSION >= '1.9'
   2   require 'uri'
   3
   4   str = "\xE6\x97\xA5\xE6\x9C\xAC\xE8\xAA\x9E" # Ni-ho-nn-go in UTF-8, means Japanese.
   5   str.force_encoding(Encoding::UTF_8) if str.respond_to?(:force_encoding)
   6
   7   unless str == URI.unescape(URI.escape(str))
   8     URI::Parser.class_eval do
   9       remove_method :unescape
  10       def unescape(str, escaped = @regexp[:ESCAPED])
  11         enc = (str.encoding == Encoding::US_ASCII) ? Encoding::UTF_8 : str.encoding
  12         str.gsub(escaped) { [$&[1, 2].hex].pack('C') }.force_encoding(enc)
  13       end
  14     end
  15   end
  16 end