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- From: ckd@eff.org (Christopher Davis)
- Subject: Re: (not an) RFC: mailbox format
- In-Reply-To: stanley@ruby.OCE.ORST.EDU's message of 25 Jan 1993 14:39:48 GMT
- Message-ID: <CKD.93Jan25112519@loiosh.eff.org>
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- Organization: Electronic Frontier Foundation Tech Central
- References: <MS-C.727914241.1103527590.mrc@Ikkoku-Kan.Panda.COM>
- <1k0u3kINNq3v@gaia.ucs.orst.edu>
- Date: Mon, 25 Jan 1993 16:25:22 GMT
- Lines: 34
-
- JS> == John Stanley <stanley@ruby.OCE.ORST.EDU>
-
- JS> Is there any good reason why MIME chose to go with its own version of
- JS> binary encoding instead of using UUENCODE?
-
- Yes.
-
- JS> While there are some systems that can't pass UUENCODEd data
- JS> (converting one ASCII character to something else, as I recall),
- JS> UUENCODE IS almost universally available, while MIME is not.
-
- The systems in question (including EBCDIC-ASCII conversion tables and the
- like) *break* uu*code.
-
- To quote from RFC1341:
- NOTE: This subset has the important property that it is
- represented identically in all versions of ISO 646,
- including US ASCII, and all characters in the subset are
- also represented identically in all versions of EBCDIC.
- Other popular encodings, such as the encoding used by the
- UUENCODE utility and the base85 encoding specified as part
- of Level 2 PostScript, do not share these properties, and
- thus do not fulfill the portability requirements a binary
- transport encoding for mail must meet.
-
- JS> It is rather counterproductive to require a user to know that the
- JS> recipient's mailer is MIME compatible before sending a binary.
-
- At the moment, this is true. However, since source for base64 encoders
- (and decoders, of course) has been made available, we will hopefully start
- seeing them on more and more operating systems (and even a program loader
- or two :).
- --
- * Christopher Davis * <ckd@eff.org> * <ckd@kei.com> * [CKD1] * MIME * RIPEM *
-