In a virtual terminal (i.e. the terminal without X, the one after pressing, say C-M-F1), if the following code is evaluated, arrow keys no longer work correctly. The 4 arrow keys becomes ABCD. (global-set-key (kbd "M-[") '(lambda () (interactive) (other-window -1) )) Note: (1) This bug is reproducible with emacs -nw --no-init (2) Under a X-environment terminal, say konsole, there is no problem. ========== This bug report will be sent to the Bug-GNU-Emacs mailing list and the GNU bug tracker at debbugs.gnu.org. Please check that the From: line contains a valid email address. After a delay of up to one day, you should receive an acknowledgment at that address. Please write in English if possible, as the Emacs maintainers usually do not have translators for other languages. 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': 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/24.3/etc/DEBUG. In GNU Emacs 24.3.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.8.2) of 2013-08-06 on -mnt-storage-buildroots-staging-x86_64-eric Windowing system distributor `The X.Org Foundation', version 11.0.11405000 System Description: Arch Linux Configured using: `configure '--prefix=/usr' '--sysconfdir=/etc' '--libexecdir=/usr/lib' '--localstatedir=/var' '--with-x-toolkit=gtk3' '--with-xft' 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4' 'LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro' 'CPPFLAGS=-D_FORTIFY_SOURCE=2'' Important settings: value of $LANG: en_US.UTF-8 value of $XMODIFIERS: @im=fcitx locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Org Minor modes in effect: flyspell-mode: t show-paren-mode: t global-edit-server-edit-mode: t yas-global-mode: t yas-minor-mode: t tooltip-mode: t mouse-wheel-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 column-number-mode: t line-number-mode: t transient-mark-mode: t Recent input: M-r C-x C-c M-x e r e p SPC o SPC r SPC e SPC b SPC Recent messages: Source file `/home/wangyi/.emacs.d/elpa/org-20131028/org-bbdb.el' newer than byte-compiled file Source file `/home/wangyi/.emacs.d/elpa/org-20131028/org-gnus.el' newer than byte-compiled file Source file `/home/wangyi/.emacs.d/elpa/org-20131028/org-irc.el' newer than byte-compiled file Source file `/home/wangyi/.emacs.d/elpa/org-20131028/org-rmail.el' newer than byte-compiled file Starting new Ispell process [aspell::en] ... scroll-up-command: End of buffer [2 times] scroll-down-command: Beginning of buffer [3 times] goto-line [2 times] (No files need saving) Making completion list... 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message idna cl-macs gv rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils thingatpt flyspell ispell image-file org-element org-rmail org-mhe org-irc org-info org-gnus gnus-util org-docview org-bibtex bibtex org-bbdb org-w3m org byte-opt warnings bytecomp byte-compile cconv org-macro org-footnote org-pcomplete pcomplete org-list org-faces org-entities noutline outline easy-mmode org-version ob-emacs-lisp ob ob-tangle org-src ob-ref ob-lob ob-table ob-keys ob-exp ob-comint comint ansi-color ring ob-core ob-eval org-compat org-macs org-loaddefs format-spec find-func cal-menu calendar cal-loaddefs server wy-txt wy-tex derived wy-appearance wy-org wy-keys wy-settings time-date paren edit-server yasnippet advice help-fns advice-preload edmacro kmacro help-mode cl cl-lib wy-utils edit-server-autoloads goto-last-change-autoloads org-autoloads info easymenu yasnippet-autoloads package tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar 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 minibuffer loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)