safe_h.rb

  # try to fix broken string encodings. most of the time the string is latin-1 encoded
  if RUBY_VERSION >= "1.9"
    def safe_h(s)
      h(s)
    rescue ArgumentError
      raise unless $!.to_s == "invalid byte sequence in UTF-8"
      logger.debug "#{$!} during html escaping".upcase
      begin
        h(s.force_encoding('ISO-8859-1').encode('UTF-8', :undef => :replace))
      rescue ArgumentError
        h(s.force_encoding('ASCII-8BIT').encode('UTF-8', :undef => :replace))
      end
    end
  else
    def safe_h(s)
      h(s)
    end
  end