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Re: mhfixmsg -fixcte not working?


From: Ken Hornstein
Subject: Re: mhfixmsg -fixcte not working?
Date: Thu, 09 Dec 2021 21:09:59 -0500

>I wonder if the right fix here would be to allow binary CTE of
>message/rfc822 content.  MH originally allowed only 7bit encoding of
>multipart and message content types.  By the time nmh was put under
>cvs control, 8bit and binary had been added for multipert.  Commit
>d057cb added allowance of 8bit for message content type.  Should we
>add binary?

Actually ... I think you're right that we should add binary.  The concern
about q-p or base64 was double encoding, but that's not a concern for
binary.

>RFC 2045 § 6.4 says "Even more severe restrictions [than 7bit, 8bit,
>or binary] apply to some subtypes of the 'message' type.", but I don't
>see where those more severe restrictions are listed.

Looks like that's RFC 2046, § 5.2.  For message/rfc822, binary is
explicitly permitted.  But for message/partial, 8bit and binary
are prohibited.

--Ken



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