bug#7653: 23.2; nnnil not documented

[Tom Tromey]

I happened across the Gnus "nnnil" backend recently.
This is not documented in the Gnus manual.
I think it ought to be.



In GNU Emacs 23.2.1 (i386-redhat-linux-gnu, GTK+ Version 2.20.1)
 of 2010-06-03 on x86-07.phx2.fedoraproject.org
Windowing system distributor `Fedora Project', version 11.0.10802000
configured using `configure  '--build=i386-redhat-linux-gnu' 
'--host=i386-redhat-linux-gnu' '--program-prefix=' 
'--disable-dependency-tracking' '--prefix=/usr' '--exec-prefix=/usr' 
'--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' 
'--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib' 
'--libexecdir=/usr/libexec' '--localstatedir=/var' '--sharedstatedir=/var/lib' 
'--mandir=/usr/share/man' '--infodir=/usr/share/info' '--with-dbus' 
'--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' 
'--with-xft' '--with-xpm' '--with-x-toolkit=gtk' 
'build_alias=i386-redhat-linux-gnu' 'host_alias=i386-redhat-linux-gnu' 
'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 
-fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 
-mtune=atom -fasynchronous-unwind-tables''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Texinfo

Minor modes in effect:
  auto-fill-function: do-auto-fill
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  erc-list-mode: t
  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-ring-mode: t
  erc-pcomplete-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-match-mode: t
  erc-button-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-netsplit-mode: t
  erc-spelling-mode: t
  erc-truncate-mode: t
  flyspell-mode: t
  erc-status-mode: t
  erc-services-mode: t
  erc-networks-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
b u t SPC n o t SPC i n SPC t h e S-SPC A P I <M-backspace> 
A B I <return> <f10> <f10> C-c b <f10> <f10> <f10> 
C-c b o k <return> <f10> C-z o n n n n n n n n C-z 
o C-x b SPC * E M <tab> <return> M-v M-v C-u C-u C-p 
C-p C-p <return> q C-z o n n n n SPC n n n SPC n q 
s l s C-z o <f10> <f10> <f10> <f10> <f10> <f10> <switch-frame> 
C-z o <f10> <f10> <f10> <f10> <f10> C-x C-f C-a C-f 
C-f C-k . g n u s <return> C-s p C-a C-u C-n C-n C-n 
M-f M-f C-h v <return> C-z o l s L M-< C-s l o c a 
l h o C-a C-v C-v C-v C-v l C-h i d m g n u s <return> 
C-s p r i m a r y C-s C-a C-s C-s C-s C-s C-r C-r C-a 
t s n n n i l <return> C-x C-g q C-x C-f / s p <tab> 
t r <tab> E m <tab> e m <tab> - m <tab> l i s <M-backspace> 
d o <tab> <M-backspace> <tab> <tab> t r <tab> <tab> 
<tab> d o <tab> <tab> <tab> l i <M-backspace> e m <tab> 
<tab> <tab> g n <tab> <tab> <M-backspace> <M-backspace> 
<M-backspace> <tab> <tab> l i s p <M-backspace> m i 
<tab> <tab> g n <tab> <tab> . t <tab> <return> C-s 
n n n i l C-s C-a C-x k C-g M-x l g r e p <return> 
n n n i l <return> <return> <return> C-x o C-x 1 C-x 
k <return> C-x k C-g M-x r e p o r t - e m <tab> b 
<tab> <return>

Recent messages:
Searching subfile gnus-4...
uncompressing gnus-4.gz...done
Searching subfile gnus-5...
uncompressing gnus-5.gz...done
uncompressing gnus-1.gz...done
Info-search: Search failed: "nnnil"
Making completion list... [7 times]
Mark saved where search started
Quit
Grep finished with no matches found
Quit

Load-path shadows:
/home/tromey/lib/lisp/rpm-spec-mode hides 
/usr/share/emacs/site-lisp/rpm-spec-mode
/usr/share/emacs/site-lisp/flim/sha1 hides /usr/share/emacs/23.2/lisp/sha1
/usr/share/emacs/site-lisp/flim/md4 hides /usr/share/emacs/23.2/lisp/md4
/usr/share/emacs/site-lisp/flim/hex-util hides 
/usr/share/emacs/23.2/lisp/hex-util
/home/tromey/.emacs.d/elpa/css-mode-1.0/css-mode hides 
/usr/share/emacs/23.2/lisp/textmodes/css-mode
/home/tromey/.emacs.d/elpa/ruby-mode-1.0/ruby-mode hides 
/usr/share/emacs/23.2/lisp/progmodes/ruby-mode
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-glyph hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-glyph
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-valid hides 
/usr/share/emacs/23.2/lisp/nxml/rng-valid
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-maint hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-maint
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-cmpct hides 
/usr/share/emacs/23.2/lisp/nxml/rng-cmpct
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-loc hides 
/usr/share/emacs/23.2/lisp/nxml/rng-loc
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-dt hides 
/usr/share/emacs/23.2/lisp/nxml/rng-dt
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-parse hides 
/usr/share/emacs/23.2/lisp/nxml/rng-parse
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-uri hides 
/usr/share/emacs/23.2/lisp/nxml/rng-uri
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-util hides 
/usr/share/emacs/23.2/lisp/nxml/rng-util
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-uchnm hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-uchnm
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-ns hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-ns
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-rap hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-rap
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/xsd-regexp hides 
/usr/share/emacs/23.2/lisp/nxml/xsd-regexp
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-mode hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-mode
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-enc hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-enc
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-outln hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-outln
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-xsd hides 
/usr/share/emacs/23.2/lisp/nxml/rng-xsd
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-nxml hides 
/usr/share/emacs/23.2/lisp/nxml/rng-nxml
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-maint hides 
/usr/share/emacs/23.2/lisp/nxml/rng-maint
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/xmltok hides 
/usr/share/emacs/23.2/lisp/nxml/xmltok
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-util hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-util
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/nxml-parse hides 
/usr/share/emacs/23.2/lisp/nxml/nxml-parse
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-pttrn hides 
/usr/share/emacs/23.2/lisp/nxml/rng-pttrn
/home/tromey/.emacs.d/elpa/nxml-mode-20041004/rng-match hides 
/usr/share/emacs/23.2/lisp/nxml/rng-match
/usr/share/emacs/site-lisp/flim/sasl-cram hides 
/usr/share/emacs/23.2/lisp/net/sasl-cram
/usr/share/emacs/site-lisp/flim/hmac-def hides 
/usr/share/emacs/23.2/lisp/net/hmac-def
/usr/share/emacs/site-lisp/flim/hmac-md5 hides 
/usr/share/emacs/23.2/lisp/net/hmac-md5
/usr/share/emacs/site-lisp/flim/sasl hides /usr/share/emacs/23.2/lisp/net/sasl
/usr/share/emacs/site-lisp/flim/sasl-digest hides 
/usr/share/emacs/23.2/lisp/net/sasl-digest
/usr/share/emacs/site-lisp/flim/sasl-ntlm hides 
/usr/share/emacs/23.2/lisp/net/sasl-ntlm
/usr/share/emacs/site-lisp/flim/ntlm hides /usr/share/emacs/23.2/lisp/net/ntlm
/home/tromey/.emacs.d/elpa/emms-3.0/tq hides 
/usr/share/emacs/23.2/lisp/emacs-lisp/tq

Features:
(shadow warnings emacsbug info-look compare-w python-21 python imenu
two-column conf-mode tabify man assoc edmacro gdb-shell find-dired
dired-aux vcard calc calc-loaddefs calc-macs iso-transl kmacro cus-start
cus-load autorevert repeat m4-mode time-stamp find-func webjump iswitchb
asm-mode autoconf autoconf-mode ffap sh-script executable rpm-spec-mode
thai-util thai-word grep tcl gdb-ui bindat json gud novice vc-bzr
vc-sccs vc-dir ewoc make-mode jimb-patch texinfo smerge-mode find-file
arc-mode archive-mode vc-svn w3m-cookie w3m-bookmark w3m-tabmenu
w3m-session log-view vc-annotate cal-move idutils etags vc-git cc-mode
cc-fonts cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
gnus-fun vc-cvs goto-addr shell compile newcomment bbdb-sc supercite
regi bbdb-hooks mule-util w3m-form w3m browse-url doc-view jka-compr
image-mode w3m-hist w3m-fb w3m-ems w3m-ccl ccl w3m-favicon w3m-image
w3m-proc w3m-util parse-time diff-mode mail-hist flow-fill dabbrev
bbdb-gui gnus-cite smiley ansi-color gnus-bcklg gnus-async gnus-ml
disp-table log-edit pcvs-util add-log copyright vc vc-dispatcher
multi-isearch vc-rcs help-mode view erc-menu erc-join erc-ring
erc-pcomplete pcomplete erc-track erc-match erc-button erc-fill
erc-stamp erc-netsplit erc-spelling erc-truncate auth-source byte-opt
bytecomp byte-compile nnml nndraft nnmh bbdb-gnus bbdb-snarf mail-extr
bbdb-com gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg
gnus-art mm-uu mml2015 epg-config mm-view smime dig nntp gnus-cache
gnus-sum nnoo gnus-group gnus-undo nnmail mail-source gnus-start
gnus-spec gnus-int gnus-range message idna sendmail ecomplete rfc822 mml
mml-sec password-cache mm-decode mm-bodies mm-encode mail-parse rfc2231
rfc2047 rfc2045 qp ietf-drums mailabbrev gmm-utils mailheader canlock
sha1 sha1-el hex-util hashcash gnus-win gnus gnus-ems nnheader gnus-util
netrc mail-utils wid-edit flyspell ispell eldoc emms-status emms-lastfm
emms-url url url-proxy url-privacy url-expand url-methods url-history
url-cookie url-util url-parse url-vars mm-util mail-prsvr mailcap
emms-browser sort emms-playlist-sort emms-score emms-player-xine
emms-player-mpd tq emms-playing-time emms-lyrics time-date emms-streams
emms-mode-line emms-cache emms-info-ogginfo emms-info-mp3info emms-info
later-do emms-playlist-mode emms-player-mplayer emms-player-simple
emms-source-playlist emms-source-file dired emms-setup emms emms-compat
gdb-shell-autoloads nxml-enc info weblogger-autoloads xml-rpc-autoloads
package reporter cal-china lunar solar cal-dst cal-bahai cal-islam
cal-hebrew holidays hol-loaddefs appt diary-lib diary-loaddefs cal-menu
easymenu calendar cal-loaddefs uniquify mouse-sel easy-mmode status cl
cl-19 erc-services erc-networks erc-goodies erc erc-backend erc-compat
format-spec thingatpt pp bbdb timezone ange-ftp regexp-opt comint ring
server advice help-fns advice-preload u-vm-color vm-autoloads vm-vars
vm-version bbdb-autoloads tooltip ediff-hook vc-hooks lisp-float-type
mwheel x-win x-dnd font-setting tool-bar dnd fontset image fringe
lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar
mldrag mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev loaddefs button minibuffer faces cus-face files text-properties
overlay md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
system-font-setting font-render-setting gtk x-toolkit x multi-tty emacs)

Tom