code: def unquote(cls, string):
          
          if len(string) == 0:
              return ''
  
          if string[0] != '"':
              return string
  
          if len(string) == 1:
              return string
  
          if string[-1] != '"':
              raise ValueError("Poorly formed string literal: %s" % string)
  
          def replace(match):
              value = match.group(0)
              if value == '\\\\':
                  return '\\'
              if value == '\\"':
                  return '"'
              if value == '""':
                  return '"'
              if len(value) != 2:
                  raise ValueError("Poorly formed string literal: %s" % string)
              return value  # consistent with python handling
  
          result = re.sub(cls._escaped_quote_re, replace, string[1:-1])
          return result
docs: Removes quotes from a quoted string.
  
          Splunk search command quote rules are applied. The enclosing
          double-quotes, if present, are removed. Escaped double-quotes ('\"' or
          '""') are replaced by a single double-quote ('"').
  
          **NOTE**
  
          We are not using a json.JSONDecoder because Splunk quote rules are
          different than JSON quote rules. A json.JSONDecoder does not recognize
          a pair of double-quotes ('""') as an escaped quote ('"') and will decode
          single-quoted strings ("'") in addition to double-quoted ('"') strings.