Problem hiding headers in news articles

[Robert Knighten]

Recently and for no apparent reason I have been unable to hide any of the
headers in new articles.  I thought I new all the relevant Gnus configuration,
but nothing I do has helped.  The situation is that when I first look at an
article the headers look like this:

Path: 
newsspool2.news.pas.earthlink.net!stamper.news.pas.earthlink.net!elnk-nf2-pas!newsfeed.earthlink.net!newshub.sdsu.edu!npeer.de.kpn-eurorings.net!news.unit0.net!news.szaf.org!morpheus.pingos.org!newsfeed.datemas.de!news.datemas.de!per
From: per@RQNNE.invalid (Per Rønne)
Newsgroups: comp.emacs
Subject: Re: Emacs & C programming
Date: Thu, 22 Feb 2007 22:28:58 +0100
Organization: Datemas.de http://www.datemas.de
Lines: 26
Message-ID: <1htyilw.isjrtfdd3434N%per@RQNNE.invalid>
References: <45d49cef$0$19623$426a74cc@news.free.fr> <877iuimuka.fsf@gmx.at>
Reply-To: spam@RQNNE.dk (Per Rønne)
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Trace: news.datemas.de 
gSPZ1YVUnA/RJKZNCRQ7eCWwqtM88kLEFV7LXdiRe22fglL5XY9jPfx3Vl4qKrNOWNyICfwqGzVbXFc5d7a6vGZuOYbVQPCoJCxC8Yr+31jEQdB6CeUmPW8kzdaOvFgHBj0meoVUzjJuRb5pwkvfZt131oUp+Dur
X-Complaints-To: abuse@datemas.de
NNTP-Posting-Date: Thu, 22 Feb 2007 21:28:58 +0000 (UTC)
X-Face: -Ec]fH;)|5`=g?&$Zh-)dV|x:w#VG#S}<SEgcEV6v%v]1l'"v<nAf{BR\-}QF
        />C@|s&Og$a~PWByK#FcE"c1eV]<oBYWgsvFx)X.1IV=wcC9^!onQ4M8ewM
User-Agent: MacSOUP/2.8 Da (Mac OS X version 10.4.8 (PPC))
Xref: news.earthlink.net comp.emacs:90472
X-Received-Date: Thu, 22 Feb 2007 13:28:59 PST 
(newsspool2.news.pas.earthlink.net)

If I invoke the command gnus-summary-toggle-header (e.g. by pressing t) it
changes to

From: per@RQNNE.invalid (Per Rønne)
Subject: Re: Emacs & C programming
Newsgroups: comp.emacs
Date: Thu, 22 Feb 2007 22:28:58 +0100
Organization: Datemas.de http://www.datemas.de
Reply-To: spam@RQNNE.dk (Per Rønne)

[Not visible here is that initially there is no highlighting, but after
invoking gnus-summary-toggle-header the header keywords are highlighted.]

Here are the values of the various variables I think relevant:

------------------------------------------------------------------------------
gnus-visible-headers is a variable defined in
`/usr/share/emacs/site-lisp/gnus-5.10.8/lisp/gnus-art.elc'.  

Its value is
"^From:\\|^Newsgroups:\\|^Subject:\\|^Date:\\|^Followup-To:\\|^Reply-To:\\|^Organization:\\|^Summary:\\|^Keywords:\\|^To:\\|^[BGF]?Cc:\\|^Posted-To:\\|^Mail-Copies-To:\\|^Mail-Followup-To:\\|^Apparently-To:\\|^Gnus-Warning:\\|^Resent-From:\\|^X-Sent:"
------------------------------------------------------------------------------

gnus-ignored-headers is a variable defined in
`/usr/share/emacs/site-lisp/gnus-5.10.8/lisp/gnus-art.elc'.

Its value is 

("^Path:" "^Expires:" "^Date-Received:" "^References:" "^Xref:" "^Lines:"
"^Relay-Version:" "^Message-ID:" "^Approved:" "^Sender:" "^Received:"
"^X-UIDL:" "^MIME-Version:" "^Return-Path:" "^In-Reply-To:" "^Content-Type:"
"^Content-Transfer-Encoding:" "^X-WebTV-Signature:" "^X-MimeOLE:"
"^X-MSMail-Priority:" "^X-Priority:" "^X-Loop:" "^X-Authentication-Warning:"
"^X-MIME-Autoconverted:" "^X-Face:" "^X-Attribution:" "^X-Originating-IP:"
"^Delivered-To:" "^NNTP-[-A-Za-z]+:" "^Distribution:" "^X-no-archive:"
"^X-Trace:" "^X-Complaints-To:" "^X-NNTP-Posting-Host:" "^X-Orig.*:"
"^Abuse-Reports-To:" "^Cache-Post-Path:" "^X-Article-Creation-Date:"
"^X-Poster:" "^X-Mail2News-Path:" "^X-Server-Date:" "^X-Cache:" "^Originator:"
"^X-Problems-To:" "^X-Auth-User:" "^X-Post-Time:" "^X-Admin:" "^X-UID:"
"^Resent-[-A-Za-z]+:" "^X-Mailing-List:" "^Precedence:"
"^Original-[-A-Za-z]+:" "^X-filename:" "^X-Orcpt:" "^Old-Received:" "^X-Pgp:"
"^X-Auth:" "^X-From-Line:" "^X-Gnus-Article-Number:" "^X-Majordomo:" "^X-Url:"
"^X-Sender:" "^MBOX-Line:" "^Priority:" "^X400-[-A-Za-z]+:" "^Status:"
"^X-Gnus-Mail-Source:" "^Cancel-Lock:" "^X-FTN:" "^X-EXP32-SerialNo:"
"^Encoding:" "^Importance:" "^Autoforwarded:"
"^Original-Encoded-Information-Types:" "^X-Ya-Pop3:" "^X-Face-Version:"
"^X-Vms-To:" "^X-ML-NAME:" "^X-ML-COUNT:" "^Mailing-List:" "^X-finfo:"
"^X-md5sum:" "^X-md5sum-Origin:" "^X-Sun-Charset:" "^X-Accept-Language:"
"^X-Envelope-Sender:" "^List-[A-Za-z]+:" "^X-Listprocessor-Version:"
"^X-Received:" "^X-Distribute:" "^X-Sequence:" "^X-Juno-Line-Breaks:"
"^X-Notes-Item:" "^X-MS-TNEF-Correlator:" "^x-uunet-gateway:" "^X-Received:"
"^Content-length:" "^X-precedence:" "^X-Authenticated-User:" "^X-Comment:"
"^X-Report:" "^X-Abuse-Info:" "^X-HTTP-Proxy:" "^X-Mydeja-Info:"
"^X-Copyright:" "^X-No-Markup:" "^X-Abuse-Info:" "^X-From_:"
"^X-Accept-Language:" "^Errors-To:" "^X-BeenThere:" "^X-Mailman-Version:"
"^List-Help:" "^List-Post:" "^List-Subscribe:" "^List-Id:"
"^List-Unsubscribe:" "^List-Archive:" "^X-Content-length:" "^X-Posting-Agent:"
"^Original-Received:" "^X-Request-PGP:" "^X-Fingerprint:" "^X-WRIEnvto:"
"^X-WRIEnvfrom:" "^X-Virus-Scanned:" "^X-Delivery-Agent:" "^Posted-Date:"
"^X-Gateway:" "^X-Local-Origin:" "^X-Local-Destination:" "^X-UserInfo1:"
"^X-Received-Date:" "^X-Hashcash:" "^Face:" "^X-DMCA-Notifications:"
"^X-Abuse-and-DMCA-Info:" "^X-Postfilter:" "^X-Gpg-.*:" "^X-Disclaimer:")

------------------------------------------------------------------------------

gnus-sorted-header-list is a variable defined in
`/usr/share/emacs/site-lisp/gnus-5.10.8/lisp/gnus-art.elc'. 

Its value is 

("^From:" "^Subject:" "^Summary:" "^Keywords:" "^Newsgroups:" "^Followup-To:"
"^To:" "^Cc:" "^Date:" "^Organization:")

------------------------------------------------------------------------------

gnus-treat-hide-headers is a variable defined in
`/usr/share/emacs/site-lisp/gnus-5.10.8/lisp/gnus-art.elc'. 

Its value is head

------------------------------------------------------------------------------

gnus-boring-article-headers is a variable defined in
`/usr/share/emacs/site-lisp/gnus-5.10.8/lisp/gnus-art.elc'.

Its value is 
(empty followup-to reply-to)

------------------------------------------------------------------------------

gnus-treat-highlight-headers is a variable defined in
`/usr/share/emacs/site-lisp/gnus-5.10.8/lisp/gnus-art.elc'. 

Its value is head

------------------------------------------------------------------------------

I am using Emacs version 22.1.1 and Gnus version 5.10.8 though I have just
recently upgraded both and was having the same problem with earlier versions.

I have tried such extremes as setting gnus-visible-headers to nil and changing
the value of gnus-ignored-headers as well as many changes to the value of
gnus-visible-headers.  All of these had the expected effect *after* invoking 
gnus-summary-toggle-header, but no effect before!

Strangely enough I had a very similar problem three years ago, but then I was
able to solve it by upgrading Emacs and Gnus.  No such luck this time.

Comments, particularly from anyone who has had this problem, will be much
appreciated.

-- Bob

-- 
Robert L. Knighten
RLK @ knighten . org