Fwd: UTF7 decode error in Gnus with IMAP

Fwd: UTF7 decode error in Gnus with IMAP

[Kevin Rodgers]

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From: Simon Josefsson <jas@extundo.com>
To: Kevin Rodgers <ihs_4664@yahoo.com>
Cc: ding@gnus.org, rms@gnu.org
Subject: Re: [Fwd: UTF7 decode error in Gnus with IMAP]
Date: Wed, 14 Dec 2005 15:18:21 +0100

Kevin Rodgers <ihs_4664@yahoo.com> writes:

> Simon Josefsson <jas@extundo.com> wrote:
>> "Richard M. Stallman" <rms@gnu.org> writes:
>> 
>> > Would you please DTRT about this, then ack?
>> 
>> I believe no action is required, see below.
>> 
>> Kevin Rodgers <ihs_4664@yahoo.com> writes:
>> 
>> > 1. Is it safe to suggest to this user to (setq imap-use-utf7 nil)?
>> 
>> I believe it is safe, if used consistently.  If you toggle the
>> variable, existing groups will rename themselves.  Of course, you'll
>> loose non-ascii features.
>> 
>> > 2. Should imap-utf7-decode work on this string with non-nil imap-use-utf7?
>> >     It contains only ASCII characters, but the "&" triggers the error:
>> >
>> >    signal(error ("Unable to convert from Unicode"))
>> >    error("Unable to convert from Unicode")
>> >    utf7-u16-latin1-char-converter()
>> >    utf7-fragment-decode(207 210 t)
>> >    utf7-decode-internal(t)
>> >    utf7-decode("Public Folders/Business Units/SC WW Sales and 
>> > Marketing/Reporting/Commissions/2005 Commissions/2005 Adjustments/*2005 
>> > Closed Adjustments/*closed*7.1.05 through 7.31.05/*closed*EPIC  Tut 
>> > Systems Videotele &IBM- TMS320C6415TGLZ1" t)
>> 
>> That isn't valid UTF-7 a'la IMAP, so I think the error is correct.
>> Imap.el call utf7-decode in a condition-case, so in practice you
>> shouldn't see the error.
>> 
>> How does this cause any real problem?
>
> The original problem is described here:
>
> http://lists.gnu.org/archive/html/help-gnu-emacs/2005-11/msg00727.html

I see.  It is just a warning, right?

The problem is in the server, it send an invalid UTF-7 string.  Gnus
is supposed to ignore the group name, print that warning and continue,
I'm not sure it can do more.

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