[tz] Converting TZ DB files to pretty markup

Steffen Daode Nurpmeso sdaoden at gmail.com
Tue Jan 29 12:14:12 UTC 2013

Marc Lehmann <schmorp at schmorp.de> wrote:
 |On Mon, Jan 28, 2013 at 12:58:46PM +0100, Steffen Daode Nurpmeso \
 |<sdaoden at gmail.com> wrote:
 |> And yes, a good mailer converts 'From ' lines to quoted printable
 |> encoding instead of using the '>From ' quoting because it doesn't
 |> modify actual data content. :)
 |Except ">From " encoding doesn't modify actual data content either, and

yes it does. yes it does. yes it does.

 |even an average mailer needs to support both formats when reading mbox
 |(See rfc4155 or http://qmail.org./man/man5/mbox.html for details)

I did have had a .. relationship with both of these, too.
I think NetBSD's Mail(1) is the outstanding neat and clean one in
respect to conformance to these standards, at least still and as
of *today*, and to the best of my knowledge.

'From_' quoting has a terribly long story beside that, as many do
know, and many false solutions imho have been used or are still in
use even today; let's just mention the rather famous thread from
1996-05-17 [1].

Unfortunately POSIX and backward tools like Python's standard
library MBOX support go for a 'From_' quoting that can be dated
back to RFC 976 -- from February 1986!

The good thing about using quoted-printable encoding for 'From '
lines, instead of whatever MBOXO/MBOXRD etc. quoting, is, beside
being required for S/MIME (digest does not change since data
content is not modified, but only the transfer-encoding), that
even those backward-oriented and savage tools will work with
message content that is produced today, transparently.

 |                The choice of a       Deliantra, the free code+content \
 |      -----==-     _GNU_              http://www.deliantra.net
 |      ----==-- _       generation
 |      ---==---(_)__  __ ____  __      Marc Lehmann
 |      --==---/ / _ \/ // /\ \/ /      schmorp at schmorp.de
 |      -=====/_/_//_/\_,_/ /_/\_\



[1] http://www.jwz.org/doc/content-length.html

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