Re: Configuring tabs line format

[Ergus]

Hi Juri:

Some of the recent changes made the tab-bar not to work for me either in
tui or gui.

emacs -Q
C-x 6 f file RET
and there is not tab at all.

In the gtk interface it shows nothing and with -nw it adds an extra row
where before was the tab-bar.

I have not follow the tab thread recently, does something changed that
requires special intervention?

On Thu, Oct 17, 2019 at 01:12:29AM +0300, Juri Linkov wrote:
> > Is it possible to change how tab-bar is formatted?
> > For example I'd like to put display-time-string there.
>
> Yes, everything is possible.  You need just a few lines of code:
>
> (advice-add 'tab-bar-make-keymap-1 :around
>  (lambda (orig-fun)
>    (append `(keymap (display-time menu-item ,(format-time-string "%H:%M") 
> ignore))
>            (cdr (funcall orig-fun))))
>  '((name . tab-bar-display-time)))
>
> and if you want also a timer to redraw the tab-bar during idle times.
>
> This has one problem - the clock is located on the left side.  When
> Android moved the status bar clock from the right corner to the left,
> it caused backward-compatibility problems for millions of users, and
> still it's impossible to move the clock back to the right on Android.
>
> But in Emacs everything is extensible and customizable.  So it's easy
> to move the clock to the right on the tab-bar with another few lines:
>
> (advice-add 'tab-bar-make-keymap-1 :around
>  (lambda (orig-fun)
>    (append (funcall orig-fun)
>            `((display-time menu-item
>               ,(concat
>                 (propertize " " 'display '(space :align-to (- right 5)))
>                 (format-time-string "%H:%M"))
>               ignore))))
>  '((name . tab-bar-display-time)))
>
> Now the tab-bar clock looks exactly like the desktop top panel clock: