- TOKEN =
'[^(),\/<>@;:\\\"\[\]?={}\s]+'
- VALUE1 =
"([^;]*)"
- IPADDR =
"#{IPV4ADDR}|#{IPV6ADDR}"
- BASE_HOSTNAME =
"(?:#{DOMLABEL}\\.)(?:((?:(?:#{DOMLABEL}\\.)+(?:#{TOPLABEL}\\.?))|local))"
- BASE3_HOSTNAME =
"(?:#{DOMLABEL}\\.)(?:#{DOMLABEL}\\.)(?:((?:(?:#{DOMLABEL}\\.)+(?:#{TOPLABEL}\\.?))|local))"
- QUOTED_PAIR =
"\\\\[\\x00-\\x7F]"
- LWS =
"\\r\\n(?:[ \\t]+)"
- QDTEXT =
"[\\t\\x20-\\x21\\x23-\\x7E\\x80-\\xFF]|(?:#{LWS})"
- QUOTED_TEXT =
"\\\"(?:#{QDTEXT}|#{QUOTED_PAIR})*\\\""
- VALUE2 =
"#{TOKEN}|#{QUOTED_TEXT}"