GNU bug report logs - #4909
23.1.50; in emacs -nw `read-char' should return with error when an event is entered.

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Package: emacs;

Reported by: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>

Date: Thu, 12 Nov 2009 10:50:04 UTC

Severity: normal

Tags: moreinfo

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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Report forwarded to bug-submit-list <at> lists.donarmstrong.com, Emacs Bugs <bug-gnu-emacs <at> gnu.org>:
bug#4909; Package emacs. (Thu, 12 Nov 2009 10:50:05 GMT) Full text and rfc822 format available.
Acknowledgement sent to Thierry Volpiatto <thierry.volpiatto <at> gmail.com>:
New bug report received and forwarded. Copy sent to Emacs Bugs <bug-gnu-emacs <at> gnu.org>. (Thu, 12 Nov 2009 10:50:05 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.1.50; in emacs -nw `read-char' should return with error when an event is entered.
Date: Thu, 12 Nov 2009 11:36:13 +0100

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug <at> gnu.org mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug.  If you can, give
a recipe starting from `emacs -Q':

Hi,
in emacs -nw `read-char' don't return an error when an event is entered
(e.g down) and `read-event' don't return the event name (e.g down):


;; X emacs session

,----[ `read-char output with window-system = x' ]
| (read-char)
| Debugger entered--Lisp error: (error "Non-character input-event")
|   read-char()
|   eval((read-char))
|   eval-last-sexp-1(t)
|   eval-last-sexp(t)
|   eval-print-last-sexp()
|   call-interactively(eval-print-last-sexp nil nil)
`----

,----[ `read-event with window-system = x' ]
| (read-event)
| down
`----

;; In a terminal with emacs -nw

,----[ `read-event in emacs -nw' ]
| (read-event)
| 27
| [B
`----

,----[ `read-char in emacs -nw' ]
| (read-char)
| 27
| [B
`----

,----[ `read-key DTRT in emacs -nw' ]
| (read-key)
| down
`----

However `read-key' do the right thing, but is not usable in lesser emacs
versions.
So i have to use this function to replace `read-key' in not emacs-cvs:

,----
| (defun traverse-read-char-or-event (prompt)
|   "Use `read-char' to read keyboard input, if input is not a char use `read-event' instead."
|   (let* ((chr (condition-case nil (read-char prompt) (error nil)))
|          (evt (unless chr (read-event))))
|     (or chr evt)))
`----

And i lost the ability of using arrow keys in an emacs -nw because
`read-char' and `read-event' return the wrong thing.
However C-n and C-p work fine.

See: hg clone http://mercurial.intuxication.org/hg/traverselisp
     hg update -C 1.1.0

Thanks.

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
/usr/share/emacs/23.1.50/etc/DEBUG.


In GNU Emacs 23.1.50.1 (i686-pc-linux-gnu, GTK+ Version 2.18.3)
 of 2009-11-07 on tux
Windowing system distributor `The X.Org Foundation', version 11.0.10603901
configured using `configure  '--prefix=/usr' '--build=i686-pc-linux-gnu' '--host=i686-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--program-suffix=-emacs-23-cvs' '--infodir=/usr/share/info/emacs-23-cvs' '--with-sound' '--with-x' '--without-toolkit-scroll-bars' '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' '--with-xpm' '--with-xft' '--without-libotf' '--without-m17n-flt' '--with-x-toolkit=gtk' '--without-hesiod' '--without-kerberos' '--without-kerberos5' '--with-gpm' '--with-dbus' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu' 'CFLAGS=-march=i686 -pipe -O2' 'LDFLAGS=-Wl,-O1''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: C
  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: fr_FR.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  eldoc-mode: t
  delete-selection-mode: t
  minibuffer-depth-indicate-mode: t
  auto-image-file-mode: t
  shell-dirtrack-mode: t
  partial-completion-mode: t
  show-paren-mode: t
  display-battery-mode: t
  display-time-mode: t
  diff-auto-refine-mode: t
  outline-minor-mode: t
  recentf-mode: t
  savehist-mode: t
  desktop-save-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <backspace> 
<backspace> <left> SPC <right> SPC <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<left> <left> <left> <left> <backspace> <backspace> 
<backspace> SPC = SPC <left> <left> <left> <left> <left> 
<left> <left> <left> <left> <left> <left> <left> <left> 
<left> <left> <left> w i t h SPC <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <left> <left> <left> <left> 
<f7> q t C-M-` r e a d - e v e n t SPC i n SPC e m 
a c s SPC - n w <return> <down> <down> <down> <down> 
<down> <down> <f7> q t C-M-` r e a d - e v e n t SPC 
i n SPC <left> <left> <left> <left> <backspace> <backspace> 
<backspace> <backspace> <backspace> c a h r <backspace> 
<backspace> <backspace> h a r <right> <right> <right> 
<right> e m a c s SPC - n w <return> <down> <down> 
<down> <down> <down> <down> <left> <f7> q t C-M-` r 
e a d - k e y SPC D T R T SPC i n SPC e m a c s SPC 
- n w <return> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> C-SPC C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n M-w M-x r e p o r t - e m a c s - <tab> <prior> 
<return>

Recent messages:
Mark set [2 times]

Type "q" to restore this window.
Auto-saving...done
Auto-saving...done
Collecting symbols...done
Mark set
Saved text from ";; X emacs session

,----[ `read-char ou"

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/home/thierry/elisp/ngnus/lisp/gmm-utils hides /usr/share/emacs/23.1.50/lisp/gnus/gmm-utils
/home/thierry/elisp/ngnus/lisp/mm-bodies hides /usr/share/emacs/23.1.50/lisp/gnus/mm-bodies
/home/thierry/elisp/ngnus/lisp/legacy-gnus-agent hides /usr/share/emacs/23.1.50/lisp/gnus/legacy-gnus-agent
/home/thierry/elisp/ngnus/lisp/nnagent hides /usr/share/emacs/23.1.50/lisp/gnus/nnagent
/home/thierry/elisp/ngnus/lisp/gnus-spec hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-spec
/home/thierry/elisp/ngnus/lisp/gnus-dup hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-dup
/home/thierry/elisp/ngnus/lisp/nnwfm hides /usr/share/emacs/23.1.50/lisp/gnus/nnwfm
/home/thierry/elisp/ngnus/lisp/gnus-logic hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-logic
/home/thierry/elisp/ngnus/lisp/mm-decode hides /usr/share/emacs/23.1.50/lisp/gnus/mm-decode
/home/thierry/elisp/ngnus/lisp/spam-report hides /usr/share/emacs/23.1.50/lisp/gnus/spam-report
/home/thierry/elisp/ngnus/lisp/gnus-range hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-range
/home/thierry/elisp/ngnus/lisp/spam-wash hides /usr/share/emacs/23.1.50/lisp/gnus/spam-wash
/home/thierry/elisp/ngnus/lisp/nndiary hides /usr/share/emacs/23.1.50/lisp/gnus/nndiary
/home/thierry/elisp/ngnus/lisp/nnvirtual hides /usr/share/emacs/23.1.50/lisp/gnus/nnvirtual
/home/thierry/elisp/ngnus/lisp/gnus-mh hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-mh
/home/thierry/elisp/ngnus/lisp/gnus-uu hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-uu
/home/thierry/elisp/ngnus/lisp/mm-view hides /usr/share/emacs/23.1.50/lisp/gnus/mm-view
/home/thierry/elisp/ngnus/lisp/nnheader hides /usr/share/emacs/23.1.50/lisp/gnus/nnheader
/home/thierry/elisp/ngnus/lisp/gnus-ml hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-ml
/home/thierry/elisp/ngnus/lisp/messcompat hides /usr/share/emacs/23.1.50/lisp/gnus/messcompat
/home/thierry/elisp/ngnus/lisp/nnbabyl hides /usr/share/emacs/23.1.50/lisp/gnus/nnbabyl
/home/thierry/elisp/ngnus/lisp/nnoo hides /usr/share/emacs/23.1.50/lisp/gnus/nnoo
/home/thierry/elisp/ngnus/lisp/mm-extern hides /usr/share/emacs/23.1.50/lisp/gnus/mm-extern
/home/thierry/elisp/ngnus/lisp/nnlistserv hides /usr/share/emacs/23.1.50/lisp/gnus/nnlistserv
/home/thierry/elisp/ngnus/lisp/sieve-manage hides /usr/share/emacs/23.1.50/lisp/gnus/sieve-manage
/home/thierry/elisp/ngnus/lisp/rfc2045 hides /usr/share/emacs/23.1.50/lisp/gnus/rfc2045
/home/thierry/elisp/ngnus/lisp/ietf-drums hides /usr/share/emacs/23.1.50/lisp/gnus/ietf-drums
/home/thierry/elisp/ngnus/lisp/sieve-mode hides /usr/share/emacs/23.1.50/lisp/gnus/sieve-mode
/home/thierry/elisp/ngnus/lisp/starttls hides /usr/share/emacs/23.1.50/lisp/gnus/starttls
/home/thierry/elisp/ngnus/lisp/sieve hides /usr/share/emacs/23.1.50/lisp/gnus/sieve
/home/thierry/elisp/ngnus/lisp/nneething hides /usr/share/emacs/23.1.50/lisp/gnus/nneething
/home/thierry/elisp/ngnus/lisp/gnus-fun hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-fun
/home/thierry/elisp/ngnus/lisp/canlock hides /usr/share/emacs/23.1.50/lisp/gnus/canlock
/home/thierry/elisp/ngnus/lisp/gnus-dired hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-dired
/home/thierry/elisp/ngnus/lisp/gnus-nocem hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-nocem
/home/thierry/elisp/ngnus/lisp/gnus-srvr hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-srvr
/home/thierry/elisp/ngnus/lisp/nnwarchive hides /usr/share/emacs/23.1.50/lisp/gnus/nnwarchive
/home/thierry/elisp/ngnus/lisp/gnus-cite hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-cite
/home/thierry/elisp/ngnus/lisp/gnus-audio hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-audio
/home/thierry/elisp/ngnus/lisp/nnml hides /usr/share/emacs/23.1.50/lisp/gnus/nnml
/home/thierry/elisp/ngnus/lisp/nnmairix hides /usr/share/emacs/23.1.50/lisp/gnus/nnmairix
/home/thierry/elisp/ngnus/lisp/yenc hides /usr/share/emacs/23.1.50/lisp/gnus/yenc
/home/thierry/elisp/ngnus/lisp/nnmaildir hides /usr/share/emacs/23.1.50/lisp/gnus/nnmaildir
/home/thierry/elisp/ngnus/lisp/nnfolder hides /usr/share/emacs/23.1.50/lisp/gnus/nnfolder
/home/thierry/elisp/ngnus/lisp/gnus-draft hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-draft
/home/thierry/elisp/ngnus/lisp/rfc2104 hides /usr/share/emacs/23.1.50/lisp/gnus/rfc2104
/home/thierry/elisp/ngnus/lisp/mml-sec hides /usr/share/emacs/23.1.50/lisp/gnus/mml-sec
/home/thierry/elisp/ngnus/lisp/nntp hides /usr/share/emacs/23.1.50/lisp/gnus/nntp
/home/thierry/elisp/ngnus/lisp/gnus-vm hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-vm
/home/thierry/elisp/ngnus/lisp/message hides /usr/share/emacs/23.1.50/lisp/gnus/message
/home/thierry/elisp/ngnus/lisp/mm-encode hides /usr/share/emacs/23.1.50/lisp/gnus/mm-encode
/home/thierry/elisp/ngnus/lisp/gnus-util hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-util
/home/thierry/elisp/ngnus/lisp/gnus-cus hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-cus
/home/thierry/elisp/ngnus/lisp/compface hides /usr/share/emacs/23.1.50/lisp/gnus/compface
/home/thierry/elisp/ngnus/lisp/mm-uu hides /usr/share/emacs/23.1.50/lisp/gnus/mm-uu
/home/thierry/elisp/ngnus/lisp/rfc1843 hides /usr/share/emacs/23.1.50/lisp/gnus/rfc1843
/home/thierry/elisp/ngnus/lisp/gnus-sum hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-sum
/home/thierry/elisp/ngnus/lisp/gnus-agent hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-agent
/home/thierry/elisp/ngnus/lisp/gnus-picon hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-picon
/home/thierry/elisp/ngnus/lisp/qp hides /usr/share/emacs/23.1.50/lisp/gnus/qp
/home/thierry/elisp/ngnus/lisp/mm-partial hides /usr/share/emacs/23.1.50/lisp/gnus/mm-partial
/home/thierry/elisp/ngnus/lisp/mm-util hides /usr/share/emacs/23.1.50/lisp/gnus/mm-util
/home/thierry/elisp/ngnus/lisp/gnus-undo hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-undo
/home/thierry/elisp/ngnus/lisp/smiley hides /usr/share/emacs/23.1.50/lisp/gnus/smiley
/home/thierry/elisp/ngnus/lisp/score-mode hides /usr/share/emacs/23.1.50/lisp/gnus/score-mode
/home/thierry/elisp/ngnus/lisp/gnus-start hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-start
/usr/share/emacs/site-lisp/cedet/eieio/eieio-custom hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-custom
/usr/share/emacs/site-lisp/cedet/eieio/eieio-opt hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-opt
/usr/share/emacs/site-lisp/cedet/eieio/eieio-datadebug hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-datadebug
/usr/share/emacs/site-lisp/cedet/eieio/eieio-base hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-base
/usr/share/emacs/site-lisp/cedet/eieio/chart hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/chart
~/elisp/emms/lisp/tq hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/tq
/usr/share/emacs/site-lisp/cedet/eieio/eieio-speedbar hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-speedbar
/usr/share/emacs/site-lisp/cedet/eieio/eieio-comp hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-comp
/usr/share/emacs/site-lisp/cedet/eieio/eieio hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio
/usr/share/emacs/site-lisp/cedet/common/pulse hides /usr/share/emacs/23.1.50/lisp/cedet/pulse
/usr/share/emacs/site-lisp/cedet/common/cedet-idutils hides /usr/share/emacs/23.1.50/lisp/cedet/cedet-idutils
/usr/share/emacs/site-lisp/cedet/semantic/semantic hides /usr/share/emacs/23.1.50/lisp/cedet/semantic
/usr/share/emacs/site-lisp/cedet/common/inversion hides /usr/share/emacs/23.1.50/lisp/cedet/inversion
/usr/share/emacs/site-lisp/cedet/common/mode-local hides /usr/share/emacs/23.1.50/lisp/cedet/mode-local
/usr/share/emacs/site-lisp/cedet/common/data-debug hides /usr/share/emacs/23.1.50/lisp/cedet/data-debug
/usr/share/emacs/site-lisp/cedet/common/cedet-global hides /usr/share/emacs/23.1.50/lisp/cedet/cedet-global
/usr/share/emacs/site-lisp/cedet/ede/ede hides /usr/share/emacs/23.1.50/lisp/cedet/ede
/usr/share/emacs/site-lisp/cedet/common/cedet-cscope hides /usr/share/emacs/23.1.50/lisp/cedet/cedet-cscope
/usr/share/emacs/site-lisp/cedet/common/cedet hides /usr/share/emacs/23.1.50/lisp/cedet/cedet
/usr/share/emacs/site-lisp/cedet/common/cedet-files hides /usr/share/emacs/23.1.50/lisp/cedet/cedet-files
/usr/share/emacs/site-lisp/cedet/srecode/srecode hides /usr/share/emacs/23.1.50/lisp/cedet/srecode
/home/thierry/elisp/ngnus/lisp/time-date hides /usr/share/emacs/23.1.50/lisp/calendar/time-date
/home/thierry/elisp/ngnus/lisp/parse-time hides /usr/share/emacs/23.1.50/lisp/calendar/parse-time

Features:
(shadow gnus-cite gnus-demon gnus-namazu gnus-dired nnshimbun shimbun
luna eword-encode eword-decode std11 mel path-util mime-def alist
mcharset mcs-20 mcs-e20 pces pces-e20 pces-20 broken pcustom poe pym
static apel-ver product gnus-bcklg spam spam-stat gnus-uu yenc
gnus-alias mail-extr gnus-msg emacsbug eieio-opt help-mode view vc-rcs
semantic-edit xhg-dvc xhg xhg-annotate xhg-mq xhg-log bzr-core cg-core
xdarcs-core xgit-core xhg-core xmtn-minimal tla smerge-mode dvc-diff
dvc-fileinfo diff dvc-cmenu dvc-about dvc-version dvc-revlist uniquify
semantic-el semantic-bovine bovine-debug semantic-debug eldoc align-let
server magit parse-time smallurl mm-url mybest-theme windmove sdcv woof
screenshot auto-document eiv tv-utils csv2org pcvs pcvs-parse pcvs-info
pcvs-defs showtip eev-thierry iterator eev-all eev-mini-steps
eev-browse-url eev-langs eev-compose eev-glyphs eev-insert eev-steps
eev-bounded eev locate delsel init-anything-thierry descbinds-anything
anything-ipython ipython executable anything-dabbrev-expand dabbrev
shell-history anything-complete anything-show-completion anything-etags
anything-match-plugin etags anything-traverse anything-delicious
anything-mercurial anything-config w3m-bookmark rx anything
bookmark-extensions bookmark install-elisp mb-depth midnight dar
traverselisp thumb-page warn-mail moz else-mode expand-a-word setnu
stumpwm-mode cl-info slime-banner slime-tramp slime-asdf slime-fancy
slime-fontifying-fu slime-package-fu slime-mdot-fu slime-references
slime-xref-browser slime-scratch slime-presentations
slime-highlight-edits slime-fuzzy slime-fancy-inspector slime-c-p-c
slime-editing-commands slime-autodoc slime-enclosing-context slime-parse
slime-repl slime apropos hideshow hyperspec thingatpt slime-autoloads
bbdb-autoloads bbdb-gui bbdb-com bbdb boxquote rect image-file
tramp-imap imap-hash imap tramp-gw tramp-fish tramp-smb tramp-cache
tramp-ftp tramp-cmds tramp shell tramp-compat trampver complete
newsticker newsticker-treeview newsticker-plainview newsticker-reader
newsticker-ticker newsticker-backend xml ledger pcomplete esh-arg
esh-util extview lpr woman man two-column shell-command em-term term
disp-table ehelp electric esh-toggle em-xtra dirtrack flymake pdbtrack
pycomplete python-mode info-look ansi-color pymacs no-word regex-tool
htmlfontify text-translator-load paren battery time dired-tar compile
comint dired-details diredp-minimal yaoddmuse skeleton sgml-mode
emms-mpd-config emms-playlist-limit emms-volume emms-volume-amixer
emms-tag-editor emms-i18n emms-mark emms-history emms-bookmarks
emms-score emms-stream-info emms-metaplaylist-mode emms-lastfm
emms-browser sort emms-playlist-sort emms-last-played emms-player-xine
emms-player-mpd tq emms-playing-time emms-lyrics emms-url emms-mode-line
emms-cache emms-info-ogginfo emms-info-mp3info emms-playlist-mode
emms-player-vlc emms-player-mplayer emms-info emms-streams later-do
emms-source-playlist emms-source-file emms-player-simple emms-setup emms
emms-compat winner dvc-init dvc-bookmarks dvc-state dvc-config bzr-gnus
tla-gnus xgit-gnus xhg-gnus gnus-art mm-uu mml2015 mm-view smime dig
dvc-gnus tla-core pp tla-autoconf tla-defs dvc-log vc vc-dispatcher
dvc-unified dvc-tips dired-x dired-aux ffap ediff-merg ediff-diff
ediff-wind ediff-help ediff-util ediff-mult ediff-init ediff
dvc-autoloads dvc-core dvc-lisp dvc-buffers dvc-ui dvc-register
dvc-utils dvc-emacs ewoc dvc-defs dvc-site psvn log-edit ring pcvs-util
add-log diff-mode htmlize-hack htmlize muse-colors muse-docbook
muse-texinfo texnfo-upd texinfo muse-latex muse-html muse-xml-common
muse-wiki cus-edit cus-start cus-load muse-publish muse-project
muse-protocols muse-regexps muse muse-nested-tags muse-mode
muse-autoloads org-config-thierry cal-china lunar solar cal-dst
cal-bahai cal-islam cal-hebrew holidays hol-loaddefs vc-hg org-wl
org-w3m org-vm org-rmail org-mhe org-mew org-irc org-jsinfo org-infojs
org-html org-exp org-exp-blocks org-info org-gnus org-bibtex org-bbdb
org-agenda appt diary-lib diary-loaddefs cal-menu calendar cal-loaddefs
org-annotation-helper url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-util url-parse url-vars remember org-remember
org org-footnote org-src org-list org-faces org-compat org-macs noutline
outline easy-mmode config-w3m w3m browse-url doc-view jka-compr
image-mode timezone w3m-hist w3m-fb w3m-ems w3m-ccl ccl w3m-favicon
w3m-image w3m-proc w3m-util mime-w3m w3m-load recentf tree-widget
savehist epa-file epa epg epg-config auth-source dired gnus-async nntp
gnus-sum nnoo gnus-group gnus-undo nnmail mail-source format-spec
gnus-start gnus-spec gnus-int gnus-range message sendmail regexp-opt
ecomplete rfc822 mml mml-sec password-cache mm-decode mm-bodies
mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums
mailabbrev gmm-utils mailheader canlock sha1 hex-util hashcash gnus-win
gnus gnus-ems nnheader gnus-util netrc time-date mail-utils mm-util
mail-prsvr sb-info info gnus-load usage-memo edmacro kmacro desktop
punycode idna site-gentoo w3m-wget preview-latex cedet
cedet-contrib-load contrib-loaddefs cogre-load cogre-loaddefs
speedbar-load speedbar-loaddefs ede-load ede-loaddefs ede-speedbar
ede-files ede eieio-speedbar semantic-ia-sb semantic-analyze
semantic-scope semantic-analyze-fcn semantic-sort semanticdb-el
semanticdb-search semantic-find semanticdb semantic-ctxt semantic-format
semantic-util-modes semantic-util semantic semantic-lex semantic-tag
working fame speedbar sb-image ezimage dframe easymenu assoc
eieio-custom wid-edit ede-source eieio-base srecode-load srecode
srecode-loaddefs semantic-load semantic-fw semantic-loaddefs mode-local
find-func derived eieio-load eieio-loaddefs cedet-load cedet-compat
cedet-loaddefs eieio advice help-fns advice-preload byte-opt bytecomp
byte-compile cl cl-19 inversion tex-site auto-loads tooltip ediff-hook
vc-hooks lisp-float-type mwheel x-win x-dnd 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 text-properties
overlay md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind gtk
x-toolkit x multi-tty emacs)

-- 
A + Thierry Volpiatto
Location: Saint-Cyr-Sur-Mer - France
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#4909; Package emacs. (Sat, 09 Jul 2016 13:03:01 GMT) Full text and rfc822 format available.

Message #8 received at 4909 <at> debbugs.gnu.org (full text, mbox):

From: Andrew Hyatt <ahyatt <at> gmail.com>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 4909 <at> debbugs.gnu.org
Subject: Re: bug#4909: 23.1.50;
 in emacs -nw `read-char' should return with error when an event is
 entered.
Date: Sat, 09 Jul 2016 09:02:14 -0400

Sorry for the late reply here.  I can confirm this is still a problem in
Emacs 25.

Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:

> Please write in English if possible, because the Emacs maintainers
> usually do not have translators to read other languages for them.
>
> Your bug report will be posted to the emacs-pretest-bug <at> gnu.org mailing list.
>
> Please describe exactly what actions triggered the bug
> and the precise symptoms of the bug.  If you can, give
> a recipe starting from `emacs -Q':
>
> Hi,
> in emacs -nw `read-char' don't return an error when an event is entered
> (e.g down) and `read-event' don't return the event name (e.g down):
>
>
> ;; X emacs session
>
> ,----[ `read-char output with window-system = x' ]
> | (read-char)
> | Debugger entered--Lisp error: (error "Non-character input-event")
> |   read-char()
> |   eval((read-char))
> |   eval-last-sexp-1(t)
> |   eval-last-sexp(t)
> |   eval-print-last-sexp()
> |   call-interactively(eval-print-last-sexp nil nil)
> `----
>
> ,----[ `read-event with window-system = x' ]
> | (read-event)
> | down
> `----
>
> ;; In a terminal with emacs -nw
>
> ,----[ `read-event in emacs -nw' ]
> | (read-event)
> | 27
> | [B
> `----
>
> ,----[ `read-char in emacs -nw' ]
> | (read-char)
> | 27
> | [B
> `----
>
> ,----[ `read-key DTRT in emacs -nw' ]
> | (read-key)
> | down
> `----
>
> However `read-key' do the right thing, but is not usable in lesser emacs
> versions.
> So i have to use this function to replace `read-key' in not emacs-cvs:
>
> ,----
> | (defun traverse-read-char-or-event (prompt)
> |   "Use `read-char' to read keyboard input, if input is not a char use `read-event' instead."
> |   (let* ((chr (condition-case nil (read-char prompt) (error nil)))
> |          (evt (unless chr (read-event))))
> |     (or chr evt)))
> `----
>
> And i lost the ability of using arrow keys in an emacs -nw because
> `read-char' and `read-event' return the wrong thing.
> However C-n and C-p work fine.
>
> See: hg clone http://mercurial.intuxication.org/hg/traverselisp
>      hg update -C 1.1.0
>
> Thanks.
>
> If Emacs crashed, and you have the Emacs process in the gdb debugger,
> please include the output from the following gdb commands:
>     `bt full' and `xbacktrace'.
> For information about debugging Emacs, please read the file
> /usr/share/emacs/23.1.50/etc/DEBUG.
>
>
> In GNU Emacs 23.1.50.1 (i686-pc-linux-gnu, GTK+ Version 2.18.3)
>  of 2009-11-07 on tux
> Windowing system distributor `The X.Org Foundation', version 11.0.10603901
> configured using `configure  '--prefix=/usr' '--build=i686-pc-linux-gnu' '--host=i686-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--program-suffix=-emacs-23-cvs' '--infodir=/usr/share/info/emacs-23-cvs' '--with-sound' '--with-x' '--without-toolkit-scroll-bars' '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' '--with-xpm' '--with-xft' '--without-libotf' '--without-m17n-flt' '--with-x-toolkit=gtk' '--without-hesiod' '--without-kerberos' '--without-kerberos5' '--with-gpm' '--with-dbus' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu' 'CFLAGS=-march=i686 -pipe -O2' 'LDFLAGS=-Wl,-O1''
>
> Important settings:
>   value of $LC_ALL: nil
>   value of $LC_COLLATE: C
>   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: fr_FR.UTF-8
>   value of $XMODIFIERS: nil
>   locale-coding-system: utf-8-unix
>   default enable-multibyte-characters: t
>
> Major mode: Lisp Interaction
>
> Minor modes in effect:
>   eldoc-mode: t
>   delete-selection-mode: t
>   minibuffer-depth-indicate-mode: t
>   auto-image-file-mode: t
>   shell-dirtrack-mode: t
>   partial-completion-mode: t
>   show-paren-mode: t
>   display-battery-mode: t
>   display-time-mode: t
>   diff-auto-refine-mode: t
>   outline-minor-mode: t
>   recentf-mode: t
>   savehist-mode: t
>   desktop-save-mode: t
>   tooltip-mode: t
>   mouse-wheel-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   font-lock-mode: t
>   global-auto-composition-mode: t
>   auto-composition-mode: t
>   auto-encryption-mode: t
>   auto-compression-mode: t
>   line-number-mode: t
>   transient-mark-mode: t
>
> Recent input:
> <right> <right> <right> <right> <right> <right> <right> 
> <right> <right> <right> <right> <right> <right> <backspace> 
> <backspace> <left> SPC <right> SPC <down> <down> <down> 
> <down> <down> <down> <down> <down> <down> <down> <down> 
> <left> <left> <left> <left> <backspace> <backspace> 
> <backspace> SPC = SPC <left> <left> <left> <left> <left> 
> <left> <left> <left> <left> <left> <left> <left> <left> 
> <left> <left> <left> w i t h SPC <down> <down> <down> 
> <down> <down> <down> <down> <down> <down> <down> <down> 
> <down> <down> <down> <down> <down> <up> <up> <up> <up> 
> <up> <up> <up> <up> <up> <left> <left> <left> <left> 
> <f7> q t C-M-` r e a d - e v e n t SPC i n SPC e m 
> a c s SPC - n w <return> <down> <down> <down> <down> 
> <down> <down> <f7> q t C-M-` r e a d - e v e n t SPC 
> i n SPC <left> <left> <left> <left> <backspace> <backspace> 
> <backspace> <backspace> <backspace> c a h r <backspace> 
> <backspace> <backspace> h a r <right> <right> <right> 
> <right> e m a c s SPC - n w <return> <down> <down> 
> <down> <down> <down> <down> <left> <f7> q t C-M-` r 
> e a d - k e y SPC D T R T SPC i n SPC e m a c s SPC 
> - n w <return> <up> <up> <up> <up> <up> <up> <up> <up> 
> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
> <up> <up> C-SPC C-n C-n C-n C-n C-n C-n C-n C-n C-n 
> C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
> C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
> C-n M-w M-x r e p o r t - e m a c s - <tab> <prior> 
> <return>
>
> Recent messages:
> Mark set [2 times]
>
> Type "q" to restore this window.
> Auto-saving...done
> Auto-saving...done
> Collecting symbols...done
> Mark set
> Saved text from ";; X emacs session
>
> ,----[ `read-char ou"
>
> Load-path shadows:
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> /home/thierry/elisp/ngnus/lisp/lpath hides /usr/share/emacs/site-lisp/emacs-wget/lpath
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> /home/thierry/elisp/ngnus/lisp/sha1 hides /usr/share/emacs/site-lisp/flim/sha1
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> /home/thierry/elisp/ngnus/lisp/sasl hides /usr/share/emacs/site-lisp/flim/sasl
> /home/thierry/elisp/ngnus/lisp/md4 hides /usr/share/emacs/site-lisp/flim/md4
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> /home/thierry/elisp/ngnus/lisp/sasl-ntlm hides /usr/share/emacs/site-lisp/flim/sasl-ntlm
> /home/thierry/elisp/lua-mode/lua-mode hides /usr/share/emacs/site-lisp/lua-mode/lua-mode
> /home/thierry/elisp/ngnus/lisp/pgg-pgp hides /usr/share/emacs/23.1.50/lisp/pgg-pgp
> /home/thierry/elisp/ngnus/lisp/pgg hides /usr/share/emacs/23.1.50/lisp/pgg
> /home/thierry/elisp/ngnus/lisp/format-spec hides /usr/share/emacs/23.1.50/lisp/format-spec
> /usr/share/emacs/site-lisp/cedet/common/ezimage hides /usr/share/emacs/23.1.50/lisp/ezimage
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> /usr/share/emacs/site-lisp/cedet/speedbar/dframe hides /usr/share/emacs/23.1.50/lisp/dframe
> /home/thierry/elisp/ngnus/lisp/pgg-gpg hides /usr/share/emacs/23.1.50/lisp/pgg-gpg
> /home/thierry/elisp/desktop hides /usr/share/emacs/23.1.50/lisp/desktop
> /usr/share/emacs/site-lisp/cedet/speedbar/speedbar hides /usr/share/emacs/23.1.50/lisp/speedbar
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> /home/thierry/elisp/ngnus/lisp/password-cache hides /usr/share/emacs/23.1.50/lisp/password-cache
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> /usr/share/emacs/site-lisp/ruby-mode/ruby-mode hides /usr/share/emacs/23.1.50/lisp/progmodes/ruby-mode
> /home/thierry/elisp/ngnus/lisp/tls hides /usr/share/emacs/23.1.50/lisp/net/tls
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> /home/thierry/elisp/ngnus/lisp/dig hides /usr/share/emacs/23.1.50/lisp/net/dig
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> /home/thierry/elisp/ngnus/lisp/sasl hides /usr/share/emacs/23.1.50/lisp/net/sasl
> /home/thierry/elisp/ngnus/lisp/imap hides /usr/share/emacs/23.1.50/lisp/net/imap
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> /home/thierry/elisp/ngnus/lisp/netrc hides /usr/share/emacs/23.1.50/lisp/net/netrc
> /home/thierry/elisp/ngnus/lisp/sasl-ntlm hides /usr/share/emacs/23.1.50/lisp/net/sasl-ntlm
> /home/thierry/elisp/ngnus/lisp/dns hides /usr/share/emacs/23.1.50/lisp/net/dns
> /home/thierry/elisp/ngnus/lisp/uudecode hides /usr/share/emacs/23.1.50/lisp/mail/uudecode
> /home/thierry/elisp/ngnus/lisp/binhex hides /usr/share/emacs/23.1.50/lisp/mail/binhex
> /home/thierry/elisp/ngnus/lisp/hashcash hides /usr/share/emacs/23.1.50/lisp/mail/hashcash
> /home/thierry/elisp/ngnus/lisp/gnus-msg hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-msg
> /home/thierry/elisp/ngnus/lisp/nngateway hides /usr/share/emacs/23.1.50/lisp/gnus/nngateway
> /home/thierry/elisp/ngnus/lisp/utf7 hides /usr/share/emacs/23.1.50/lisp/gnus/utf7
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> /home/thierry/elisp/ngnus/lisp/nnlistserv hides /usr/share/emacs/23.1.50/lisp/gnus/nnlistserv
> /home/thierry/elisp/ngnus/lisp/sieve-manage hides /usr/share/emacs/23.1.50/lisp/gnus/sieve-manage
> /home/thierry/elisp/ngnus/lisp/rfc2045 hides /usr/share/emacs/23.1.50/lisp/gnus/rfc2045
> /home/thierry/elisp/ngnus/lisp/ietf-drums hides /usr/share/emacs/23.1.50/lisp/gnus/ietf-drums
> /home/thierry/elisp/ngnus/lisp/sieve-mode hides /usr/share/emacs/23.1.50/lisp/gnus/sieve-mode
> /home/thierry/elisp/ngnus/lisp/starttls hides /usr/share/emacs/23.1.50/lisp/gnus/starttls
> /home/thierry/elisp/ngnus/lisp/sieve hides /usr/share/emacs/23.1.50/lisp/gnus/sieve
> /home/thierry/elisp/ngnus/lisp/nneething hides /usr/share/emacs/23.1.50/lisp/gnus/nneething
> /home/thierry/elisp/ngnus/lisp/gnus-fun hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-fun
> /home/thierry/elisp/ngnus/lisp/canlock hides /usr/share/emacs/23.1.50/lisp/gnus/canlock
> /home/thierry/elisp/ngnus/lisp/gnus-dired hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-dired
> /home/thierry/elisp/ngnus/lisp/gnus-nocem hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-nocem
> /home/thierry/elisp/ngnus/lisp/gnus-srvr hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-srvr
> /home/thierry/elisp/ngnus/lisp/nnwarchive hides /usr/share/emacs/23.1.50/lisp/gnus/nnwarchive
> /home/thierry/elisp/ngnus/lisp/gnus-cite hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-cite
> /home/thierry/elisp/ngnus/lisp/gnus-audio hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-audio
> /home/thierry/elisp/ngnus/lisp/nnml hides /usr/share/emacs/23.1.50/lisp/gnus/nnml
> /home/thierry/elisp/ngnus/lisp/nnmairix hides /usr/share/emacs/23.1.50/lisp/gnus/nnmairix
> /home/thierry/elisp/ngnus/lisp/yenc hides /usr/share/emacs/23.1.50/lisp/gnus/yenc
> /home/thierry/elisp/ngnus/lisp/nnmaildir hides /usr/share/emacs/23.1.50/lisp/gnus/nnmaildir
> /home/thierry/elisp/ngnus/lisp/nnfolder hides /usr/share/emacs/23.1.50/lisp/gnus/nnfolder
> /home/thierry/elisp/ngnus/lisp/gnus-draft hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-draft
> /home/thierry/elisp/ngnus/lisp/rfc2104 hides /usr/share/emacs/23.1.50/lisp/gnus/rfc2104
> /home/thierry/elisp/ngnus/lisp/mml-sec hides /usr/share/emacs/23.1.50/lisp/gnus/mml-sec
> /home/thierry/elisp/ngnus/lisp/nntp hides /usr/share/emacs/23.1.50/lisp/gnus/nntp
> /home/thierry/elisp/ngnus/lisp/gnus-vm hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-vm
> /home/thierry/elisp/ngnus/lisp/message hides /usr/share/emacs/23.1.50/lisp/gnus/message
> /home/thierry/elisp/ngnus/lisp/mm-encode hides /usr/share/emacs/23.1.50/lisp/gnus/mm-encode
> /home/thierry/elisp/ngnus/lisp/gnus-util hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-util
> /home/thierry/elisp/ngnus/lisp/gnus-cus hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-cus
> /home/thierry/elisp/ngnus/lisp/compface hides /usr/share/emacs/23.1.50/lisp/gnus/compface
> /home/thierry/elisp/ngnus/lisp/mm-uu hides /usr/share/emacs/23.1.50/lisp/gnus/mm-uu
> /home/thierry/elisp/ngnus/lisp/rfc1843 hides /usr/share/emacs/23.1.50/lisp/gnus/rfc1843
> /home/thierry/elisp/ngnus/lisp/gnus-sum hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-sum
> /home/thierry/elisp/ngnus/lisp/gnus-agent hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-agent
> /home/thierry/elisp/ngnus/lisp/gnus-picon hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-picon
> /home/thierry/elisp/ngnus/lisp/qp hides /usr/share/emacs/23.1.50/lisp/gnus/qp
> /home/thierry/elisp/ngnus/lisp/mm-partial hides /usr/share/emacs/23.1.50/lisp/gnus/mm-partial
> /home/thierry/elisp/ngnus/lisp/mm-util hides /usr/share/emacs/23.1.50/lisp/gnus/mm-util
> /home/thierry/elisp/ngnus/lisp/gnus-undo hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-undo
> /home/thierry/elisp/ngnus/lisp/smiley hides /usr/share/emacs/23.1.50/lisp/gnus/smiley
> /home/thierry/elisp/ngnus/lisp/score-mode hides /usr/share/emacs/23.1.50/lisp/gnus/score-mode
> /home/thierry/elisp/ngnus/lisp/gnus-start hides /usr/share/emacs/23.1.50/lisp/gnus/gnus-start
> /usr/share/emacs/site-lisp/cedet/eieio/eieio-custom hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-custom
> /usr/share/emacs/site-lisp/cedet/eieio/eieio-opt hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-opt
> /usr/share/emacs/site-lisp/cedet/eieio/eieio-datadebug hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-datadebug
> /usr/share/emacs/site-lisp/cedet/eieio/eieio-base hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-base
> /usr/share/emacs/site-lisp/cedet/eieio/chart hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/chart
> ~/elisp/emms/lisp/tq hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/tq
> /usr/share/emacs/site-lisp/cedet/eieio/eieio-speedbar hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-speedbar
> /usr/share/emacs/site-lisp/cedet/eieio/eieio-comp hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio-comp
> /usr/share/emacs/site-lisp/cedet/eieio/eieio hides /usr/share/emacs/23.1.50/lisp/emacs-lisp/eieio
> /usr/share/emacs/site-lisp/cedet/common/pulse hides /usr/share/emacs/23.1.50/lisp/cedet/pulse
> /usr/share/emacs/site-lisp/cedet/common/cedet-idutils hides /usr/share/emacs/23.1.50/lisp/cedet/cedet-idutils
> /usr/share/emacs/site-lisp/cedet/semantic/semantic hides /usr/share/emacs/23.1.50/lisp/cedet/semantic
> /usr/share/emacs/site-lisp/cedet/common/inversion hides /usr/share/emacs/23.1.50/lisp/cedet/inversion
> /usr/share/emacs/site-lisp/cedet/common/mode-local hides /usr/share/emacs/23.1.50/lisp/cedet/mode-local
> /usr/share/emacs/site-lisp/cedet/common/data-debug hides /usr/share/emacs/23.1.50/lisp/cedet/data-debug
> /usr/share/emacs/site-lisp/cedet/common/cedet-global hides /usr/share/emacs/23.1.50/lisp/cedet/cedet-global
> /usr/share/emacs/site-lisp/cedet/ede/ede hides /usr/share/emacs/23.1.50/lisp/cedet/ede
> /usr/share/emacs/site-lisp/cedet/common/cedet-cscope hides /usr/share/emacs/23.1.50/lisp/cedet/cedet-cscope
> /usr/share/emacs/site-lisp/cedet/common/cedet hides /usr/share/emacs/23.1.50/lisp/cedet/cedet
> /usr/share/emacs/site-lisp/cedet/common/cedet-files hides /usr/share/emacs/23.1.50/lisp/cedet/cedet-files
> /usr/share/emacs/site-lisp/cedet/srecode/srecode hides /usr/share/emacs/23.1.50/lisp/cedet/srecode
> /home/thierry/elisp/ngnus/lisp/time-date hides /usr/share/emacs/23.1.50/lisp/calendar/time-date
> /home/thierry/elisp/ngnus/lisp/parse-time hides /usr/share/emacs/23.1.50/lisp/calendar/parse-time
>
> Features:
> (shadow gnus-cite gnus-demon gnus-namazu gnus-dired nnshimbun shimbun
> luna eword-encode eword-decode std11 mel path-util mime-def alist
> mcharset mcs-20 mcs-e20 pces pces-e20 pces-20 broken pcustom poe pym
> static apel-ver product gnus-bcklg spam spam-stat gnus-uu yenc
> gnus-alias mail-extr gnus-msg emacsbug eieio-opt help-mode view vc-rcs
> semantic-edit xhg-dvc xhg xhg-annotate xhg-mq xhg-log bzr-core cg-core
> xdarcs-core xgit-core xhg-core xmtn-minimal tla smerge-mode dvc-diff
> dvc-fileinfo diff dvc-cmenu dvc-about dvc-version dvc-revlist uniquify
> semantic-el semantic-bovine bovine-debug semantic-debug eldoc align-let
> server magit parse-time smallurl mm-url mybest-theme windmove sdcv woof
> screenshot auto-document eiv tv-utils csv2org pcvs pcvs-parse pcvs-info
> pcvs-defs showtip eev-thierry iterator eev-all eev-mini-steps
> eev-browse-url eev-langs eev-compose eev-glyphs eev-insert eev-steps
> eev-bounded eev locate delsel init-anything-thierry descbinds-anything
> anything-ipython ipython executable anything-dabbrev-expand dabbrev
> shell-history anything-complete anything-show-completion anything-etags
> anything-match-plugin etags anything-traverse anything-delicious
> anything-mercurial anything-config w3m-bookmark rx anything
> bookmark-extensions bookmark install-elisp mb-depth midnight dar
> traverselisp thumb-page warn-mail moz else-mode expand-a-word setnu
> stumpwm-mode cl-info slime-banner slime-tramp slime-asdf slime-fancy
> slime-fontifying-fu slime-package-fu slime-mdot-fu slime-references
> slime-xref-browser slime-scratch slime-presentations
> slime-highlight-edits slime-fuzzy slime-fancy-inspector slime-c-p-c
> slime-editing-commands slime-autodoc slime-enclosing-context slime-parse
> slime-repl slime apropos hideshow hyperspec thingatpt slime-autoloads
> bbdb-autoloads bbdb-gui bbdb-com bbdb boxquote rect image-file
> tramp-imap imap-hash imap tramp-gw tramp-fish tramp-smb tramp-cache
> tramp-ftp tramp-cmds tramp shell tramp-compat trampver complete
> newsticker newsticker-treeview newsticker-plainview newsticker-reader
> newsticker-ticker newsticker-backend xml ledger pcomplete esh-arg
> esh-util extview lpr woman man two-column shell-command em-term term
> disp-table ehelp electric esh-toggle em-xtra dirtrack flymake pdbtrack
> pycomplete python-mode info-look ansi-color pymacs no-word regex-tool
> htmlfontify text-translator-load paren battery time dired-tar compile
> comint dired-details diredp-minimal yaoddmuse skeleton sgml-mode
> emms-mpd-config emms-playlist-limit emms-volume emms-volume-amixer
> emms-tag-editor emms-i18n emms-mark emms-history emms-bookmarks
> emms-score emms-stream-info emms-metaplaylist-mode emms-lastfm
> emms-browser sort emms-playlist-sort emms-last-played emms-player-xine
> emms-player-mpd tq emms-playing-time emms-lyrics emms-url emms-mode-line
> emms-cache emms-info-ogginfo emms-info-mp3info emms-playlist-mode
> emms-player-vlc emms-player-mplayer emms-info emms-streams later-do
> emms-source-playlist emms-source-file emms-player-simple emms-setup emms
> emms-compat winner dvc-init dvc-bookmarks dvc-state dvc-config bzr-gnus
> tla-gnus xgit-gnus xhg-gnus gnus-art mm-uu mml2015 mm-view smime dig
> dvc-gnus tla-core pp tla-autoconf tla-defs dvc-log vc vc-dispatcher
> dvc-unified dvc-tips dired-x dired-aux ffap ediff-merg ediff-diff
> ediff-wind ediff-help ediff-util ediff-mult ediff-init ediff
> dvc-autoloads dvc-core dvc-lisp dvc-buffers dvc-ui dvc-register
> dvc-utils dvc-emacs ewoc dvc-defs dvc-site psvn log-edit ring pcvs-util
> add-log diff-mode htmlize-hack htmlize muse-colors muse-docbook
> muse-texinfo texnfo-upd texinfo muse-latex muse-html muse-xml-common
> muse-wiki cus-edit cus-start cus-load muse-publish muse-project
> muse-protocols muse-regexps muse muse-nested-tags muse-mode
> muse-autoloads org-config-thierry cal-china lunar solar cal-dst
> cal-bahai cal-islam cal-hebrew holidays hol-loaddefs vc-hg org-wl
> org-w3m org-vm org-rmail org-mhe org-mew org-irc org-jsinfo org-infojs
> org-html org-exp org-exp-blocks org-info org-gnus org-bibtex org-bbdb
> org-agenda appt diary-lib diary-loaddefs cal-menu calendar cal-loaddefs
> org-annotation-helper url url-proxy url-privacy url-expand url-methods
> url-history url-cookie url-util url-parse url-vars remember org-remember
> org org-footnote org-src org-list org-faces org-compat org-macs noutline
> outline easy-mmode config-w3m w3m browse-url doc-view jka-compr
> image-mode timezone w3m-hist w3m-fb w3m-ems w3m-ccl ccl w3m-favicon
> w3m-image w3m-proc w3m-util mime-w3m w3m-load recentf tree-widget
> savehist epa-file epa epg epg-config auth-source dired gnus-async nntp
> gnus-sum nnoo gnus-group gnus-undo nnmail mail-source format-spec
> gnus-start gnus-spec gnus-int gnus-range message sendmail regexp-opt
> ecomplete rfc822 mml mml-sec password-cache mm-decode mm-bodies
> mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums
> mailabbrev gmm-utils mailheader canlock sha1 hex-util hashcash gnus-win
> gnus gnus-ems nnheader gnus-util netrc time-date mail-utils mm-util
> mail-prsvr sb-info info gnus-load usage-memo edmacro kmacro desktop
> punycode idna site-gentoo w3m-wget preview-latex cedet
> cedet-contrib-load contrib-loaddefs cogre-load cogre-loaddefs
> speedbar-load speedbar-loaddefs ede-load ede-loaddefs ede-speedbar
> ede-files ede eieio-speedbar semantic-ia-sb semantic-analyze
> semantic-scope semantic-analyze-fcn semantic-sort semanticdb-el
> semanticdb-search semantic-find semanticdb semantic-ctxt semantic-format
> semantic-util-modes semantic-util semantic semantic-lex semantic-tag
> working fame speedbar sb-image ezimage dframe easymenu assoc
> eieio-custom wid-edit ede-source eieio-base srecode-load srecode
> srecode-loaddefs semantic-load semantic-fw semantic-loaddefs mode-local
> find-func derived eieio-load eieio-loaddefs cedet-load cedet-compat
> cedet-loaddefs eieio advice help-fns advice-preload byte-opt bytecomp
> byte-compile cl cl-19 inversion tex-site auto-loads tooltip ediff-hook
> vc-hooks lisp-float-type mwheel x-win x-dnd 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 text-properties
> overlay md5 base64 format env code-pages mule custom widget
> hashtable-print-readable backquote make-network-process dbusbind gtk
> x-toolkit x multi-tty emacs)
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#4909; Package emacs. (Thu, 03 Jun 2021 09:34:02 GMT) Full text and rfc822 format available.

Message #11 received at 4909 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 4909 <at> debbugs.gnu.org
Subject: Re: bug#4909: 23.1.50; in emacs -nw `read-char' should return with
 error when an event is entered.
Date: Thu, 03 Jun 2021 11:33:35 +0200

Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:

> However `read-key' do the right thing, but is not usable in lesser emacs
> versions.
> So i have to use this function to replace `read-key' in not emacs-cvs:
>
> ,----
> | (defun traverse-read-char-or-event (prompt)
> |   "Use `read-char' to read keyboard input, if input is not a char use `read-event' instead."
> |   (let* ((chr (condition-case nil (read-char prompt) (error nil)))
> |          (evt (unless chr (read-event))))
> |     (or chr evt)))
> `----
>
> And i lost the ability of using arrow keys in an emacs -nw because
> `read-char' and `read-event' return the wrong thing.
> However C-n and C-p work fine.

(I'm going through old bug reports that unfortunately got little response at
the time.)

I'm not sure I quite understand this bug report -- read-event/key seems
to return the values described, but the arrow keys work fine for me in
Emacs 28 with -nw (on Debian/bullseye).

So is this a problem that has gone away in the years since this was
reported, or do you still see these issues?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no
Added tag(s) moreinfo. Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Thu, 03 Jun 2021 09:34:02 GMT) Full text and rfc822 format available.
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#4909; Package emacs. (Thu, 01 Jul 2021 11:44:01 GMT) Full text and rfc822 format available.

Message #16 received at 4909 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 4909 <at> debbugs.gnu.org
Subject: Re: bug#4909: 23.1.50; in emacs -nw `read-char' should return with
 error when an event is entered.
Date: Thu, 01 Jul 2021 13:43:49 +0200

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> I'm not sure I quite understand this bug report -- read-event/key seems
> to return the values described, but the arrow keys work fine for me in
> Emacs 28 with -nw (on Debian/bullseye).
>
> So is this a problem that has gone away in the years since this was
> reported, or do you still see these issues?

More information was requested, but no response was given within a
month, so I'm closing this bug report.  If the problem still exists,
please respond to this email and we'll reopen the bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no
bug closed, send any further explanations to 4909 <at> debbugs.gnu.org and Thierry Volpiatto <thierry.volpiatto <at> gmail.com> Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Thu, 01 Jul 2021 11:45:02 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Fri, 30 Jul 2021 11:24:04 GMT) Full text and rfc822 format available.
This bug report was last modified 3 years and 326 days ago.

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