When using ebuffers with the default settings, going up and down on differences by pressing n and p switches focus to the buffers that are being compared. As an example, run the following commands in terminal: ping -c 10 example.com > ~/fileA ping -c 10 example.com > ~/fileB emacs -Q --eval '(ebuffers (find-file "~/fileA") (find-file "~/fileB"))' and then press n and p to navigate through the differences. You will notice that focus switches to the buffers. It doesn't happen always. In GNU Emacs 29.3 (build 2, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw scroll bars) of 2024-03-25 built on XXX Windowing system distributor 'The X.Org Foundation', version 11.0.12101004 System Description: Linux Mint 21.3 Configured using: 'configure --without-pop --without-kerberos --without-kerberos5 --without-hesiod --without-mail-unlink --without-mailhost --with-x-toolkit=lucid --with-file-notification=inotify --with-x --with-modules --with-json --with-xft --with-native-compilation=aot' Configured features: CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON LCMS2 LIBSELINUX LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XPM LUCID ZLIB Important settings: value of $LC_TIME: en_GB.utf8 value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix Major mode: Fundamental Minor modes in effect: tooltip-mode: t global-eldoc-mode: t show-paren-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 line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message mailcap yank-media puny dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068 epg-config gnus-util text-property-search time-date mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils comp comp-cstr warnings icons subr-x rx cl-seq cl-macs gv cl-extra help-mode bytecomp byte-compile ediff ediff-merg ediff-mult ediff-wind ediff-diff ediff-help ediff-init cl-loaddefs cl-lib ediff-util rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-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 nadvice seq simple cl-generic indonesian philippine 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 emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote threads dbusbind inotify lcms2 dynamic-setting system-font-setting font-render-setting cairo x-toolkit x multi-tty make-network-process native-compile emacs) Memory information: ((conses 16 89509 8639) (symbols 48 7936 0) (strings 32 23350 1264) (string-bytes 1 698046) (vectors 16 17470) (vector-slots 8 355883 12474) (floats 8 43 52) (intervals 56 244 0) (buffers 984 15))