registry team mailing list archive

[Uday Reddy <u.s.reddy@xxxxxxxxxxxxx>]

Yuuichi Kagaguchi reports on 13 Dec 2010:

2. When a (long) header line is continue to the next
   line, it is not correctly encoded with
   MIME. Spaces at the head of the second line are
   encoded with MIME (=20), and then `smtpmail.el'
   recognizes the line as incorrect, which will
   cause an error.

I received, for example, an e-mail with header lines
as (Fig .1):

BEGIN--BEGIN
Subject: Re: =?UTF-8?B?W+Wtpuihk+aMr+iIiOWnlOWToeS8ml0g57SA6KaB5oqV56i/6KaP?=
 =?UTF-8?B?56iL562J44Gu5pS56KiCKOahiCk=?=
Date: Fri, 17 Dec 2010 12:30:29 +0900
END---END (Fig. 1)

The first line continues to the second line.
According to the header rule (in RFC?), there is a
white space at the beginnig.

In replying to this with a VM's `R' key, VM encodes
those lines into (Fig. 2):

BEGIN--BEGIN
Subject: Re:
=?utf-8?Q?[=E5=AD=A6=E8=A1=93=E6=8C=AF=E8=88=88=E5=A7=94=E5=93=A1=E4=BC=9A]_=E7=B4=80=E8=A6=81=E6=8A=95=E7=A8=BF=E8=A6=8F
Date: 月, 20 12月 2010 181020 JST
_=E7=A8=8B=E7=AD=89=E3=81=AE=E6=94=B9=E8=A8=82(=E6=A1=88)?=
END---END (Fig. 2)
---------------------------------------

This problem was fixed in this bugfix by encoding entire sequences of
words that need encoding so that mail-mode cannot break them in the
middle of the header line.

This is not really a fix, but a workaround for mail-mode.  This should
be fixed eventually by moving to message-mode which breaks the header
lines correctly.

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https://bugs.launchpad.net/bugs/490021

Title:
  vm: vm-mime-encode-headers may mess up recipient addresses