>>>>> In <v9ll3tiia5.fsf@marauder.physik.uni-ulm.de> Reiner Steib wrote:

> this change...

> ,----
>| 2004-12-21  Katsumi Yamaoka  <yamaoka@jpl.org>
>| 
>| 	* rfc2231.el (rfc2231-parse-string): Decode encoded value after
>| 	concatenating segments rather than before concatenating them.
>| 	Suggested by ARISAWA Akihiro <ari@mbf.ocn.ne.jp>.
> `----

> ... breaks displaying of external body parts for me if the file name
> spans more than one line, like this one:

Thanks for pointing it out.  I've fixed it in the v5-10 branch
and the trunk.  The change I'd made at the end of last year was
insufficient; I should have taken care that not only a segmented
parameter but also other parameters might be there.  Here's a
report I sent then: