GNU bug report logs - #59624
Usning global-mode-string for small screens

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From: Gabriel <gabriel376 <at> hotmail.com>
To: 59624 <at> debbugs.gnu.org
Subject: bug#59624: Usning global-mode-string for small screens
Date: Tue, 29 Nov 2022 09:34:04 -0300

Heime via "Bug reports for GNU Emacs, the Swiss army knife of text
editors" <bug-gnu-emacs <at> gnu.org> writes:

> I would need some more assistance to get this to work for me.
>
> When should I update mode-line-format ?  
>
> Call it first, followed by (push '("" act) global-mode-string).
>
> Would I have to call (force-mode-line-update) ?
>

Emacs is smart enough to know when to update the mode-line.  What is
the exactly problem you are facing?  Does the following code do not work
for you?

(progn
  ;; create the `act` variable
  (setq act "Indic")

  ;; add `act` to `global-mode-string`, so it's displayed in the mode-line
  (push '("" act) global-mode-string)

  ;; change position of `global-mode-string` in the mode-line
  (setq-default mode-line-format
        '("%e" mode-line-front-space
                  (:propertize ("" mode-line-mule-info mode-line-client
                mode-line-modified mode-line-remote)
                               display (min-width (5.0)))
                  mode-line-frame-identification mode-line-buffer-identification
                  mode-line-misc-info ;; <-- TO HERE
                  "   " mode-line-position
                  (vc-mode vc-mode)
                  "  " mode-line-modes mode-line-end-spaces))

  ;; you can then update `act' as you want

  ;; the mode-line will be automatically
  ;; updated (when Emacs thinks it needs to)

  ;; the code below will update `act' every 3s
  (run-with-timer 3
                  3
                  (lambda ()
                    ;; not really needed, but you can force it
                    ;;(force-mode-line-update)
                    (setq act
                          (format"|act=%s|" (current-time-string))))))

---
Gabriel?

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