Re: RE: Checking if frame has only one visible buffer

[Christopher Dimech <dimech@gmx.com>]

> Sent: Saturday, November 21, 2020 at 11:29 PM
> From: "Drew Adams" <drew.adams@oracle.com>
> To: "Christopher Dimech" <dimech@gmx.com>, "Help Gnu Emacs" <help-gnu-emacs@gnu.org>
> Subject: RE: Checking if frame has only one visible buffer
>
> > Am writing some elisp code and want to check if there is just one
> > visible buffer in frame.
>
> Does `one-window-p' do what you want?

It does.  How can I improve on the code below?

(defun fullscr-cycle ()
   "Toggles Fullscreen Mode for a Gungadin Buffer"
   (interactive)
   (if (eq (frame-parameter nil 'fullscreen) 'fullboth)
       (progn
          (if (one-window-p)
            (progn (gungadin-buffer 0)
                   (disable-fullscr))
            (disable-fullscr)))
      (progn
         (if (one-window-p)
            (progn (gungadin-buffer)
                   (enable-fullscr))
            (enable-fullscr))) ) )





> ___
>
> For discovery purposes (and other understanding),
> it helps to assimilate the Emacs jargon.  A buffer
> need not be displayed.  If displayed, it's shown
> in a window.  And a window is in a frame.
>
> If you know you're looking for a function that
> involves windows, then `M-x apropos window' will
> help.  If you're thinking of a buffer then it
> won't help you find `one-window-p'.
>