Package: emacs;
Reported by: Aaron Zeng <azeng <at> janestreet.com>
Date: Mon, 25 Aug 2025 20:24:01 UTC
Severity: normal
Found in version 30.1.90
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Aaron Zeng <azeng <at> janestreet.com> To: bug-gnu-emacs <at> gnu.org Subject: 30.1.90; Setting mouse-1-click-in-non-selected-windows nil has no effect because target window is selected too soon Date: Mon, 25 Aug 2025 16:22:59 -0400
Setting mouse-1-click-in-non-selected-windows to nil doesn't seem to
have the effect described by the documentation:
> If nil, a Mouse-1 click on a link in a non-selected window performs
> the normal mouse-1 binding, typically selects the window and sets
> point at the click position.
My understanding from this is that, if I see some button in a buffer
whose window is not selected, and click on the button with mouse-1,
the selected window should change but the button should not be
followed. However, instead I observe the button's link being followed
as if I had clicked mouse-2, or if I had first selected the buffer's
window and then clicked mouse-1.
Reproduction steps:
1. emacs -Q
2. M-: (setopt mouse-1-click-in-non-selected-windows nil)
3. C-x 4 4 C-h C-a (open *About GNU Emacs* buffer in another window)
4. Click the left mouse button on "Authors"
After step 3, I see the AUTHORS file as though I had pressed C-x o to
select the window displaying "*About GNU Emacs*" before clicking on
the button.
I would have expected that after clicking, window merely becomes
selected and point is moved to whichever character in "Authors" I
clicked on.
I did some very cursory investigation, but it seems that by the time
mouse--click-1-maybe-follows-link is called, the "new window" is
already selected, so the following check always evaluates to non-nil,
even if mouse-1-click-in-non-selected-windows is nil:
(or mouse-1-click-in-non-selected-windows
(eq (selected-window)
(posn-window (event-start last-input-event))))
In GNU Emacs 30.1.90 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo
version 1.15.12, Xaw scroll bars) of 2025-08-14 built on
igm-qws-u22796a
Repository revision: c7ee7707212c0b7c2892d2d9da039375f624799c
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Rocky Linux 8.10 (Green Obsidian)
Configured using:
'configure --with-x-toolkit=lucid --without-gpm --without-gconf
--without-selinux --without-imagemagick --with-modules --with-gif=no
--with-cairo --with-rsvg --without-compress-install --with-tree-sitter
--with-native-compilation=aot
--prefix=/usr/local/home/garnish/raw-emacs/30-20250814_124249'
Configured features:
CAIRO DBUS FREETYPE GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG LIBSYSTEMD
LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP
SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER X11 XDBE XIM
XINPUT2 XPM LUCID ZLIB
Important settings:
value of $EMACSLOADPATH: /usr/local/home/azeng/workspaces/24833141-bffb-3c99-a9d6-c366d37c4f5e/+share+/app/emacs/elisp:/usr/local/home/azeng/workspaces/24833141-bffb-3c99-a9d6-c366d37c4f5e/+share+/app/emacs/site-lisp:/usr/local/home/azeng/workspaces/24833141-bffb-3c99-a9d6-c366d37c4f5e/+share+/app/emacs/lib/ecaml_plugin/bin:
value of $LANG: en_US.utf8
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
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
minibuffer-regexp-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 dabbrev emacsbug message yank-media dired
dired-loaddefs rfc822 mml mml-sec epa derived epg rfc6068 epg-config
mm-decode mm-bodies mm-encode mailabbrev gmm-utils mailheader sendmail
noutline outline emacs-authors-mode view textsec uni-scripts
idna-mapping ucs-normalize uni-confusable textsec-check cl-extra gnutls
network-stream url-http mail-parse rfc2231 rfc2047 rfc2045 ietf-drums
url-gw nsm url-cache url-auth format-spec eww xdg url-queue shr
pixel-fill kinsoku url-file svg xml dom puny mm-url gnus nnheader
gnus-util text-property-search mail-utils range mm-util mail-prsvr
browse-url url url-proxy url-privacy url-expand url-methods url-history
url-cookie generate-lisp-file url-domsuf url-util url-parse auth-source
cl-seq eieio eieio-core cl-macs password-cache json map url-vars mailcap
time-date subr-x cus-edit pp cus-start cus-load icons wid-edit cl-print
byte-opt gv bytecomp byte-compile mouse-copy mouse-drag thingatpt
help-fns radix-tree help-mode cl-loaddefs cl-lib 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 touch-screen
tool-bar dnd fontset image 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 regexp-opt 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 dynamic-setting system-font-setting font-render-setting cairo
x-toolkit xinput2 x multi-tty move-toolbar make-network-process
native-compile emacs)
Memory information:
((conses 16 294700 30951) (symbols 48 11900 2) (strings 32 59044 2522)
(string-bytes 1 1429172) (vectors 16 41469)
(vector-slots 8 579798 44183) (floats 8 95 128) (intervals 56 4218 0)
(buffers 992 16))
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.