# File lib/active_record/vendor/mysql.rb, line 1185
  def escape_string(str)
    str.gsub(/([\0\n\r\032\'\"\\])/) do
      case $1
      when "\0" then "\\0"
      when "\n" then "\\n"
      when "\r" then "\\r"
      when "\032" then "\\Z"
      else "\\"+$1
      end
    end
  end