I believe this is intended behavior. You should use a regular interval
timer if you want repeating executions that do not depend upon Emacs
entering the idle state. Not sure why you think this worked differently in
the recent past.

"Emacs becomes *idle* when it starts waiting for user input (unless it
waits for input with a timeout, see Reading One Event
<https://www.gnu.org/software/emacs/manual/html_node/elisp/Reading-One-Event.html>),
and it remains idle until the user provides some input. If a timer is set
for five seconds of idleness, it runs approximately five seconds after
Emacs first becomes idle. Even if repeat is non-nil, this timer will not
run again as long as Emacs remains idle, because the duration of idleness
will continue to increase and will not go down to five seconds again."


On Sat, Jan 4, 2025 at 12:39 PM Jean Louis <bugs@gnu.support> wrote:

>
> The function is not working unless there is some activity. I remember it
> worked well in past, do not know what changed.
>
> (defun my-message ()
>     (message (format-time-string "%T Hello")))
>
> (run-with-idle-timer 10 t 'my-message)
>
> From that point I will see one hello message but if I do not touch
> anything it will not repeat.
>
> That is bug.
>
> It should be repeating the message each 10 seconds.
>
>
> In GNU Emacs 31.0.50 (build 4, x86_64-pc-linux-gnu, GTK+ Version
>  3.24.38, cairo version 1.16.0) of 2024-12-05 built on lco2
> Repository revision: 25b4bf7fcd75564f23b2e60e29e8ff7354186371
> Repository branch: master
> Windowing system distributor 'The X.Org Foundation', version 11.0.12101007
> System Description: Debian GNU/Linux 12 (bookworm)
>
> Configured using:
>  'configure --with-mailutils --with-native-compilation=yes
>  --with-tree-sitter --with-imagemagick'
>
> Configured features:
> ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ
> IMAGEMAGICK JPEG 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 XINPUT2 XPM GTK3 ZLIB
>
> Important settings:
>   value of $LC_ALL: en_US.UTF-8
>   value of $LC_COLLATE: en_US.UTF-8
>   value of $LC_CTYPE: en_US.UTF-8
>   value of $LC_MESSAGES: en_US.UTF-8
>   value of $LANG: de_DE.UTF-8
>   value of $XMODIFIERS: @im=exwm-xim
>   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 emacsbug message mailcap yank-media puny dired
> dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
> epg-config gnus-util time-date subr-x mm-decode mm-bodies mm-encode
> mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
> rfc2045 ietf-drums mm-util mail-prsvr mail-utils cl-print debug
> backtrace find-func misearch multi-isearch cl-extra shortdoc
> text-property-search comp-common rx help-fns byte-opt gv bytecomp
> byte-compile radix-tree help-mode leuven-dark-theme cus-theme cus-edit
> pp cus-start cus-load icons wid-edit 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 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 gtk x-toolkit xinput2 x multi-tty move-toolbar
> make-network-process native-compile emacs)
>
> Memory information:
> ((conses 16 117793 13718) (symbols 48 9320 2) (strings 32 26053 2808)
>  (string-bytes 1 732164) (vectors 16 13753)
>  (vector-slots 8 184380 13787) (floats 8 123 18) (intervals 56 540 20)
>  (buffers 992 15))
>
> --
> Jean Louis
>
>
>
>