- Use pgtk feature branch GNU Emacs - Use a keyboard layout that utilizes ISO_Level5_Shift (e.g. neoqwertz, bone, …) - Launch with `emacs -Q` - Try to use ISO_Level5_Shift to access arrow keys or other shifted key - `H- is undefined` appears in echo area instead of sending down arrow and invoking `next-line` (This works in GNU Emacs without pgtk) In GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.27, cairo version 1.16.0) Repository revision: 8b51761dfda1c85c1e0b2344b005bb435117937a Repository branch: master Windowing system distributor 'System Description: NixOS 21.05 (Okapi) Configured using: 'configure --prefix=/nix/store/nkq5x0gbzjalnq7xq78abfsaxfg00yx7-emacs-pgtkgcc-20210425.0 --disable-build-details --with-modules --with-x-toolkit=gtk3 --with-cairo --with-native-compilation --with-pgtk' Configured features: CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER PGTK PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS XIM GTK3 ZLIB Important settings: value of $LC_CTYPE: zh_CN.UTF-8 value of $LC_TIME: en_DK.UTF-8 value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix Major mode: Lisp Interaction Minor modes in effect: tooltip-mode: t global-eldoc-mode: t eldoc-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-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 line-number-mode: t transient-mark-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs rfc822 mml mml-sec epa derived epg epg-config gnus-util rmail rmail-loaddefs auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs password-cache json map text-property-search time-date subr-x seq byte-opt gv bytecomp byte-compile cconv mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils china-util iso-transl tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel term/pgtk-win pgtk-win term/common-win tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode elisp-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer 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 composite charscript charprop case-table epa-hook jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice button loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote threads dbusbind inotify dynamic-setting system-font-setting font-render-setting cairo move-toolbar gtk x-toolkit pgtk multi-tty make-network-process nativecomp emacs) Memory information: ((conses 16 67501 7027) (symbols 48 6638 0) (strings 32 19211 1528) (string-bytes 1 687662) (vectors 16 13850) (vector-slots 8 339430 10291) (floats 8 22 31) (intervals 56 205 0) (buffers 992 10))