From: Ryan Davis <ryand-ruby@...>
Date: 2012-02-23T08:37:22+09:00
Subject: Re: Net::IMAP::ResponseParseError

On Feb 21, 2012, at 00:53 , Petite Abeille wrote:

> Note the envelope subject:
> 
> "Lua, strfind \0-quirk/bug"
> 
> Notice the literal "\0". As there is no escape sequences in IMAP, \0 should be treated as a regular string.

http://tools.ietf.org/html/rfc3501#page-17

   8-bit textual and binary mail is supported through the use of a
   [MIME-IMB] content transfer encoding.  IMAP4rev1 implementations MAY
   transmit 8-bit or multi-octet characters in literals, but SHOULD do
   so only when the [CHARSET] is identified.

   Although a BINARY body encoding is defined, unencoded binary strings
   are not permitted.  A "binary string" is any string with NUL
   characters.  Implementations MUST encode binary data into a textual
   form, such as BASE64, before transmitting the data.  A string with an
   excessive amount of CTL characters MAY also be considered to be
   binary.