Re: backquote upon variable for :eval

[Heime <heimeborgia@protonmail.com>]

Sent with Proton Mail secure email.

On Monday, July 29th, 2024 at 8:24 AM, Manuel Giraud via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> wrote:

> Heime heimeborgia@protonmail.com writes:
> 
> > I am using the backquote, but I get errors when using ,tknm
> > 
> > How can this be fixed ? Perhaps I got to arrange the code in a
> > different way ?
> 
> 
> Yes I think that you should re-arrange and re-read "(elisp) Backquote"
> and maybe "(elisp) Evaluation" too.
> 
> [...]
> 
> > (defun vodil-bfnap (wmax &optional actn)
> > 
> > (setq-default mode-line-buffer-identification
> > `(:eval
> > (let* ( (bfnm (buffer-name (window-buffer)))
> > (tknm (if (> (length bfnm) wmax)
> > (vodil-ellipses bfnm wmax actn)
> > bfnm)) )
> > (propertized-buffer-identification (format " %s " ,tknm))))))
> 
> 
> What could contain an evaluation of tknm here?
> --
> Manuel Giraud

Have done this, but although it works, the buffer name is always *scratch*

(defun vodil-bfnap (wmax &optional actm)

  (let* ( (bfnm (buffer-name (window-buffer)))
          (tknm (if (> (length bfnm) wmax)
                    (vodil-ellipses bfnm wmax actm)
                  bfnm)))
    (setq-default mode-line-buffer-identification
      `(:eval  (propertized-buffer-identification (format " %s " ,tknm))))))