On 2001-01-26 16:19:12 +0900, Kazu Yamamoto wrote:
+ Note: If any line begins with the string "From", it is strongly
+ recommended that Quoted-Printable encoding be applied and that at
+ least one of the characters in the string is encoded using the
+ hexadecimal coding rule. This is because many mail transfer
+ agents treat "From " (the word "from" followed immediately by a
+ space character) as the start of a new message and thus insert a
+ right angle-bracket (>) in front of any line beginning with "From"
+ to distinguish this case, invalidating the signature.
This language is strongly recommending QP to any character sets
including ISO-2022-*, for which QP is not suitable.
It should be clear from the context that this note does not
recommend quoted-printable when you are using base64 anyways.
And I believe the redundant encoding above should be a user choice,
should not be required by the spec.
Now, guess why this is in a Note section, and not in the body of the
text. But we can even replace "strongly recommended" by
"suggested".
(And no, this won't be in draft-03 which I submitted yesterday.)
--
Thomas Roessler <roessler(_at_)does-not-exist(_dot_)org>