Message "Unknown charset: us-ascii" when entering nnimap group

Message "Unknown charset: us-ascii" when entering nnimap group

[Steinar Bang]

Platform: Intel Pentium M, debian sarge
	  GNU Emacs 21.4.1,
	  No Gnus v0.4 (today's CVS)

When entering a particular agentizedized nnimap group, I get the
message
	Unknown charset: us-ascii
in the minibuffer, and then Gnus seems to freeze for a little while
before continuing and entering the group.

The *Messages* lines for entering the group, are:

Retrieving newsgroup: nnimap+doohan:INBOX...
nnimap: Updating info for nnimap+doohan:INBOX...

nnimap: Updating info for nnimap+doohan:INBOX...done
Fetching headers for nnimap+doohan:INBOX...
Unknown charset: us-ascii
Fetching headers for nnimap+doohan:INBOX...done
Generating summary...done
No more unread articles

When I grep the .overview file, of that agentized group I find only
one match for 'us-ascii', and that is:
10449   =?us-ascii?Q?SV=3A_Priser_pa_Ventura=3F?=       AMD motorsykler AS <amd@amd.no> Sat, 12 Jun 2004 12:46:16 +0200 <01C4507B.40FC69E0.amd@amd.no>               2378    27      Xref: localhost.localdomain INBOX:10449     To: "'Steinar Bang'" <sb@dod.no>

Ie. an RFC2047 coded subject that doesn't need it, because it has
charset us-ascii.

I haven't debugged to see if it actually gets there, but I'm guessing
this is output by the statement in (rfc2047-decode-encoded-words) on
line 828 of rfc2047.el, because this is a fairly new piece of code
checked in in version 7.44 of the file, on October 19 of this year,
and this didn't happen in the old version I used (CVS checkout from
April of 2005).

I will investigate further.

Re: Message "Unknown charset: us-ascii" when entering nnimap group

[Katsumi Yamaoka]

>>>>> In <87vexw4xz9.fsf@dod.no> Steinar Bang wrote:

> Platform: Intel Pentium M, debian sarge
> 	  GNU Emacs 21.4.1,
> 	  No Gnus v0.4 (today's CVS)

> When entering a particular agentizedized nnimap group, I get the
> message
> 	Unknown charset: us-ascii
> in the minibuffer, and then Gnus seems to freeze for a little while
> before continuing and entering the group.

[...]

> 10449   =?us-ascii?Q?SV=3A_Priser_pa_Ventura=3F?= ...

Sorry, that's my fault.

I've fixed the rfc2047-charset-to-coding-system function so as
to recognize `us-ascii' as a MIME charset.

Re: Message "Unknown charset: us-ascii" when entering nnimap group

[Steinar Bang]

>>>>> Katsumi Yamaoka <yamaoka@jpl.org>:

> I've fixed the rfc2047-charset-to-coding-system function so as to
> recognize `us-ascii' as a MIME charset.

Thanx, that fixed it for me!