From: Stephen Lewis <slewis@...>
Date: 2003-04-02T14:13:13+09:00
Subject: Re: parsing/decoding mail/news headers

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On Wed, 2 Apr 2003 07:48:37 +0900
Martin Pirker <crf@sbox.tu-graz.ac.tgtegegerfrwfdweeeedef.at> wrote:

> In RMail in found header/address parsing functions (nice stuff!), but
> I still havn't figured out how to decode the header parts which have
> been encoded for 7-bit(?) compatibility,
>=20
> e.g. given
> Subject: =3D?ISO-8859-1?Q?Erg=3DE4nzung?=3D
>=20
> should decode to
> Subject: Erg=E4nzung
>=20
> (that's a german word)
> I guess this has something to do with quoted-printable or MIME - are
> there some lib functions which do this or how do you do it?

    I believe this is on the RMail todo list, but if you want to have a go =
at doing it yourself, the format is defined in RFC2047 - It's a MIME "encod=
ed-word". =20

    I started playing with something to decode these a couple of weeks back=
, a partial solution on top of RMail using some (fairly) simple parsing cod=
e and iconv (or in my case ruby/gnome2 :) isn't too difficult.

    I'd be interested if anyone else has a complete solution to this (i.e. =
deals with all the places in the various headers where you could possibly h=
ave this type of encoding, as well as doing the actual decoding and checkin=
g that only allowed characters are used in "Q" encodings depending on the h=
eader, etc etc etc)

    My solution is far too messy, and, well, nasty to share atm, but I'll p=
robably be going back to it and tidying it up over the next few weeks for a=
n MUA I'm playing with writing.

--=20
Stephen Lewis
slewis@paradise.net.nz

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