def truncate_default(str)
      return str unless str.kind_of? String
      str.sub!(/^'(.*)'$/m,'\1')
      str = "#{str[0..10]}..." if str.size > 10
      str.inspect
    end
def truncate_default(str)
      return str unless str.kind_of? String
      str.sub!(/^'(.*)'$/m,'\1')
      str = "#{str[0..10]}..." if str.size > 10
      str.inspect
    end
default value could be a multiple lines string, which would ruin annotations,
 so we truncate it and display inspect of that string