subject encoding: What's =?ISO-8859-1?Q?

[Barry A. Warsaw]

>>>>> "MB" == Martin Bless <m.bless at gmx.de> writes:

    MB> I've started investigating how Barry Warsaw's 'mimelib' works.
    MB> (Version 0.2, http://mimelib.sourceforge.net/).

Excellent!  Except, grab version 0.3 since there were some useful
patches and a few API changes.
    
    MB> Great, with mimelib I can build mime-messages from scratch and
    MB> the package offers a lot to learn from. For example, the
    MB> subject of the message can be set by msg.['subject'] =
    MB> 'Greetings!'

    MB> However, if I create a message with Outlook Express (Windows)
    MB> and the subject has some german Umlaute ("Viele Grüße"), the
    MB> subject looks like this: Subject:
    MB> =?ISO-8859-1?Q?Viele_Gr=FC=DFe?=

    MB> (1) What kind of encoding is this? Hhm, especially the
    MB> =?ISO-8859-1?Q?  part? Somewhere in the RFCs?

RFC 2047 covers encoding non-ASCII text into message headers.  This is
on my plate to add for mimelib, probably by converting such headers to
and from unicode strings.

-Barry