Re: bug#21182: 25.0.50; gnus: every other unread message is marked as read on each nnimap group refresh

[joyperkins07]

On Monday, August 3, 2015 at 8:02:19 AM UTC-5, Nick Alcock wrote:
> The bug is fairly easily characterized, and easy to spot in a group with
> a great many consecutive unread messages: every time the group is
> refreshed, half the unread messages are marked as read, in an
> alternating pattern, so after one refresh the result runs (... unread,
> read, unread, read...): after more than one refresh the result is harder
> to see.
> 
> After the first instance of this problem, we also see valid messages
> apparently originating from nobody (their name appears as '(none)', and
> other similarly bizarre messups indicating something very wrong with
> IMAP communication. (Cc:ing Drew because the thing I was communicating
> with was an SSL channel to the very same Beehive mailserver he uses -- I
> know Drew doesn't use Gnus to post here, but maybe he sometimes looks at
> his work mailbox via Gnus, in which case he might appreciate a warning!)
> 
> This happened after my first Emacs update for nearly a year (a bit of a
> 'big bang'), so it could have come from almost any change to nnimap
> since September last year. I'll do a bisection and hunt for it. (It's
> not like I can do any more damage to my imap read marks than I already
> have! I wanted to get to 'inbox zero', but not this way...)
> 
> In GNU Emacs 25.0.50.1 (x86_64-unknown-linux-gnu, X toolkit, Xaw3d scroll 
> bars)
>  of 2015-08-01 on spindle
> Repository revision: 08d65696c947b09d4c32606f279c3c2594e99e16
> Windowing system distributor `The X.Org Foundation', version 11.0.11702000
> System LSB Version:   :core-4.1-amd64:core-4.1-noarch
> 
> Configured using:
>  `configure --without-pop --without-kerberos --without-hesiod
>  --with-x-toolkit=lucid --with-wide-int --with-file-notification=inotify
>  NO_FAST_MATH=t 'CFLAGS=-Wstrict-overflow=1 -g -gdwarf-4
>  -feliminate-unused-debug-types -fvar-tracking-assignments
>  -feliminate-dwarf2-dups -O2 -pipe -D__NO_STRING_INLINES
>  -D__NO_MATH_INLINES -D_LARGEFILE64_SOURCE'
>  'CPPFLAGS=-D__NO_STRING_INLINES -D__NO_MATH_INLINES
>  -D_LARGEFILE64_SOURCE' 'LDFLAGS=-Wl,--enable-new-dtags
>  -Wl,--hash-style=gnu -Wl,-O1 -Wl,-z,relro -pipe''
> 
> Configured features:
> XAW3D XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GCONF GSETTINGS
> NOTIFY ACL GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS
> LUCID X11
> 
> Important settings:
>   value of $LC_COLLATE: C
>   value of $LANG: en_GB.UTF-8
>   locale-coding-system: utf-8-unix
> 
> Major mode: Summary
> 
> Minor modes in effect:
>   timeclock-mode-line-display: t
>   TeX-PDF-mode: t
>   magit-wip-after-apply-mode: t
>   global-undo-tree-mode: t
>   undo-tree-mode: t
>   diff-auto-refine-mode: t
>   global-semantic-mru-bookmark-mode: t
>   global-semanticdb-minor-mode: t
>   global-semantic-decoration-mode: t
>   global-semantic-idle-scheduler-mode: t
>   global-semantic-idle-local-symbol-highlight-mode: t
>   global-semantic-idle-summary-mode: t
>   global-srecode-minor-mode: t
>   global-ede-mode: t
>   global-semantic-highlight-func-mode: t
>   global-semantic-stickyfunc-mode: t
>   semantic-mode: t
>   global-git-gutter-mode: t
>   global-auto-complete-mode: t
>   global-cwarn-mode: t
>   which-function-mode: t
>   mv-shell-mode: t
>   desktop-save-mode: t
>   savehist-mode: t
>   winner-mode: t
>   Info-breadcrumbs-in-mode-line-mode: t
>   shell-dirtrack-mode: t
>   recentf-mode: t
>   display-time-mode: t
>   override-global-mode: t
>   image-diredx-async-mode: t
>   tooltip-mode: t
>   global-eldoc-mode: t
>   electric-indent-mode: t
>   mouse-wheel-mode: t
>   menu-bar-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   font-lock-mode: t
>   blink-cursor-mode: t
>   auto-composition-mode: t
>   auto-encryption-mode: t
>   auto-compression-mode: t
>   buffer-read-only: t
>   column-number-mode: t
>   line-number-mode: t
> 
> Recent messages:
> Auto-saving...done
> Auto-saving...done
> Quit
> Mark set
> previous-line: Beginning of buffer [4 times]
> Mark set
> C-x C-g is undefined
> C-M-g is undefined
> 
> Load-path shadows:
> /home/nix/lisp/defaults hides /usr/share/emacs/site-lisp/defaults
> /home/nix/lisp/emacs/scroll-in-place hides 
> /usr/share/emacs/site-lisp/scroll-in-place
> /usr/share/emacs/site-lisp/emms/tq hides 
> /usr/share/emacs/25.0.50/lisp/emacs-lisp/tq
> 
> Features:
> (shadow emacsbug canlock gnus-html flow-fill mm-archive eieio-opt
> mailalias misearch multi-isearch nnir gnus-picon gnus-cite qp gnus-async
> gnus-bcklg gnus-salt gnus-dup gnus-ml disp-table semantic/tag-write
> gnus-topic nndraft gnus-agent gnus-srvr gnus-score score-mode nnvirtual
> gnus-msg utf-7 gnutls nnmh nnfolder gnus-cache bbdb-gnus bbdb-snarf
> gnus-demon nntp gnus/mail gnus-registry registry eieio-compat
> gnus/splits nnmairix nnml smtpmail gnus-art mm-uu mml2015 mm-view
> mml-smime smime dig gnus/articles init/time-tracking timeclock
> auto-edit-substitute gnus/sa background gnus-sum gnus-group gnus-undo
> gnus/bbdb gnus/colourization tc mail-extr gnus-start gnus-cloud nnimap
> nnmail mail-source utf7 netrc nnoo parse-time gnus-spec gnus-int
> gnus-range gnus-win face-remap add-log shr-color color network-stream
> nsm starttls url-http tls url-gw url-cache url-auth eww mm-url gnus
> gnus-ems nnheader url-queue shr dom subr-x browse-url epa-file epa epg
> semantic/tag-file semantic/bovine/c hideif semantic/bovine/c-by
> semantic/lex-spp semantic/bovine/gcc semantic/bovine
> semantic/analyze/refs semantic/analyze semantic/scope
> semantic/analyze/fcn vc-filewise vc-rcs generic tex-buf semantic/texi
> tex-info tex dbus xml texinfo semantic/imenu semantic/sb semantic/sort
> semantic/db-file data-debug cedet-files semantic/wisent/python
> semantic/decorate/include semantic/dep semantic/wisent/python-wy rx
> python json ede/dired jka-compr magit-wip magit-core magit-process
> with-editor server magit-popup magit-mode magit-git crm magit-section
> magit-utils dash undo-tree diff vc vc-dispatcher vc-git diff-mode
> flymake checkdoc hideshow elisp-slime-nav init/emacs init/prog-modes
> filecache inversion semantic/db-global semantic/symref/global
> semantic/symref semantic/db-find semantic/db-ref cedet-global
> semantic/mru-bookmark semantic/db-mode semantic/db
> semantic/decorate/mode semantic/idle srecode/mode semantic/senator
> semantic/format semantic/ctxt semantic/wisent semantic/wisent/wisent
> semantic/decorate pulse srecode/insert srecode/filters srecode/args
> srecode/find srecode/map srecode/ctxt semantic/tag-ls semantic/find
> srecode/compile srecode/dictionary srecode/table ede/speedbar ede/files
> ede ede/detect ede/base ede/auto ede/source eieio-base eieio-speedbar
> speedbar sb-image ezimage dframe eieio-custom srecode
> semantic/util-modes semantic/util semantic semantic/tag semantic/lex
> semantic/fw mode-local cedet git-gutter-fringe fringe-helper git-gutter
> auto-complete-config auto-complete popup cwarn gtags filladapt cc-mode
> cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars
> cc-defs which-func generic-x init/processes vlf-setup mv-shell
> init/music emms-volume emms-volume-amixer emms-history emms-bookmarks
> emms-metaplaylist-mode emms-browser sort emms-playlist-sort
> emms-last-played emms-playing-time emms-stream-info emms-streams
> emms-mode-line emms-playlist-limit emms-playlist-mode emms-player-mpd
> emms-url url url-proxy url-privacy url-expand url-methods url-history
> url-cookie url-domsuf url-util mailcap emms-cache emms-info later-do tq
> emms-player-simple emms-source-playlist emms-source-file locate emms
> emms-compat emms-auto init/messaging bbdb-expire bbdb-hooks silly-mail
> sendmail message rfc822 mml mml-sec mm-decode mm-bodies mm-encode
> mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mail-utils gmm-utils
> mailheader bbdb-autoloads init/state desktop frameset savehist saveplace
> init/editing gpicker finder find-func lisp-mnt windmove framemove
> miniedit winner scroll-in-place flash-paren init/faces nix-dark-theme
> init/drew two-column icicles icicles-mode dired+ image-file dired-aux
> mb-depth+ mb-depth icicles-cmd2 compile imenu completion icicles-cmd1
> bbdb-com warnings mailabbrev bbdb timezone yow etags xref project
> cookie1 icicles-mcmd filesets icicles-fn icicles-var icicles-opt ffap
> url-parse url-vars fuzzy-match el-swank-fuzzy levenshtein fuzzy
> cus-theme cus-edit cus-start cus-load hexrgb icicles-face icicles-mac
> bookmark+ bookmark+-key derived dired-x crosshairs col-highlight vline
> hl-line+ hl-line bookmark+-1 bookmark+-bmu bookmark+-lit bookmark
> menu-bar+ linkd doremi apropos-fn+var help-fns+ help+ frame-fns avoid
> info+ thingatpt+ thingatpt mouse3 naked apropos+ apropos init/appearance
> tramp-cache tramp-sh tramp tramp-compat auth-source eieio byte-opt
> eieio-core gnus-util mm-util help-fns mail-prsvr password-cache
> tramp-loaddefs trampver shell pcomplete comint ansi-color ring recentf
> tree-widget wid-edit printing ps-print ps-def lpr time-date
> init/modelines time uptimes pp init/options xemacs-compat misc
> gawd-lists use-package-external use-package diminish bytecomp
> byte-compile cl-extra help-mode seq cconv bind-key easy-mmode finder-inf
> tex-site iedit-autoloads image-dired+ image-dired format-spec dired info
> yasnippet-bundle cl-macs cl-seq dropdown-list advice yasnippet edmacro
> kmacro easymenu assoc cl gv cl-loaddefs pcase cl-lib package epg-config
> mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
> lisp-float-type mwheel x-win term/common-win x-dnd tool-bar dnd fontset
> image regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode
> prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
> mouse jit-lock font-lock syntax facemenu font-core frame cl-generic cham
> georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
> korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
> european ethiopic indian cyrillic chinese charscript case-table epa-hook
> jka-cmpr-hook help simple abbrev minibuffer cl-preloaded nadvice
> loaddefs button faces cus-face macroexp files text-properties overlay
> sha1 md5 base64 format env code-pages mule custom widget
> hashtable-print-readable backquote dbusbind inotify dynamic-setting
> system-font-setting font-render-setting x-toolkit x multi-tty
> make-network-process emacs)
> 
> Memory information:
> ((conses 16 2245900 1795918)
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