New buffer not showing up in Emacs Buffers Menubar

New buffer not showing up in Emacs Buffers Menubar

[Heime]

Why do I need to call (switch-to-buffer dbuffer) to see the buffer made ?

Without it I never see the BFRN buffer in the Emacs Buffers Menubar.  


(defun print-alist (alist &optional bfrn)
  "Print Associateed List ALIST to the buffer BFRN."

  (let* ( (bfname (or bfrn "ALIST"))
          (dbuffer (get-buffer-create (concat "𒆳 " bfname))) )

    (with-current-buffer dbuffer
      (face-remap-add-relative 'default :background "blue")

      (insert "\n ALIST \n\n")

      (dolist (entry alist)

        (let* ( (key   (car entry) )
                (value (cdr entry) )
                (start (point)) )

          ;; Insert key
          (insert (format " ━ %-8s" key))

          ;; Colourise key
          (add-text-properties start (point)
            `(face (:foreground "green")))

          ;; Insert associated value
          (insert (format "\n    %s\n" value)) )) )

    ;; Finally, display the buffer
    (switch-to-buffer dbuffer) ))

Re: New buffer not showing up in Emacs Buffers Menubar

[Stephen Berman]

On Mon, 23 Sep 2024 22:25:17 +0000 Heime <heimeborgia@protonmail.com> wrote:

> Why do I need to call (switch-to-buffer dbuffer) to see the buffer made ?
>
> Without it I never see the BFRN buffer in the Emacs Buffers Menubar.  
>
>
> (defun print-alist (alist &optional bfrn)
>   "Print Associateed List ALIST to the buffer BFRN."
>
>   (let* ( (bfname (or bfrn "ALIST"))
>           (dbuffer (get-buffer-create (concat "𒆳 " bfname))) )
>
>     (with-current-buffer dbuffer
>       (face-remap-add-relative 'default :background "blue")
>
>       (insert "\n ALIST \n\n")
>
>       (dolist (entry alist)
>
>         (let* ( (key   (car entry) )
>                 (value (cdr entry) )
>                 (start (point)) )
>
>           ;; Insert key
>           (insert (format " ━ %-8s" key))
>
>           ;; Colourise key
>           (add-text-properties start (point)
>             `(face (:foreground "green")))
>
>           ;; Insert associated value
>           (insert (format "\n    %s\n" value)) )) )
>
>     ;; Finally, display the buffer
>     (switch-to-buffer dbuffer) ))

When I comment out `(switch-to-buffer dbuffer)' and evaluate the defun
in emacs -Q, I see "𒆳 ALIST" in the Buffers menu.

Steve Berman

Re: New buffer not showing up in Emacs Buffers Menubar

[Heime]

Sent with Proton Mail secure email.

On Tuesday, September 24th, 2024 at 7:41 PM, Stephen Berman <stephen.berman@gmx.net> wrote:

> On Mon, 23 Sep 2024 22:25:17 +0000 Heime heimeborgia@protonmail.com wrote:
> 
> > Why do I need to call (switch-to-buffer dbuffer) to see the buffer made ?
> > 
> > Without it I never see the BFRN buffer in the Emacs Buffers Menubar.
> > 
> > (defun print-alist (alist &optional bfrn)
> > "Print Associateed List ALIST to the buffer BFRN."
> > 
> > (let* ( (bfname (or bfrn "ALIST"))
> > (dbuffer (get-buffer-create (concat "𒆳 " bfname))) )
> > 
> > (with-current-buffer dbuffer
> > (face-remap-add-relative 'default :background "blue")
> > 
> > (insert "\n ALIST \n\n")
> > 
> > (dolist (entry alist)
> > 
> > (let* ( (key (car entry) )
> > (value (cdr entry) )
> > (start (point)) )
> > 
> > ;; Insert key
> > (insert (format " ━ %-8s" key))
> > 
> > ;; Colourise key
> > (add-text-properties start (point)
> > `(face (:foreground "green")))
> > 
> > ;; Insert associated value
> > (insert (format "\n %s\n" value)) )) )
> > 
> > ;; Finally, display the buffer
> > (switch-to-buffer dbuffer) ))
> 
> 
> When I comment out `(switch-to-buffer dbuffer)' and evaluate the defun
> in emacs -Q, I see "𒆳 ALIST" in the Buffers menu.
> 
> Steve Berman

I am still experiencing the problem though.  Is there possibility of conflicts
with other buffers in some situations ?  Is there a limit to the number of buffers
that can be displayed in the Emacs Menubar ?  It is the first time I am seeing 
this problem.

Re: New buffer not showing up in Emacs Buffers Menubar

[Stephen Berman]

On Tue, 24 Sep 2024 08:19:08 +0000 Heime <heimeborgia@protonmail.com> wrote:

> Sent with Proton Mail secure email.
>
> On Tuesday, September 24th, 2024 at 7:41 PM, Stephen Berman
> <stephen.berman@gmx.net> wrote:
>
>> On Mon, 23 Sep 2024 22:25:17 +0000 Heime heimeborgia@protonmail.com wrote:
>> 
>> > Why do I need to call (switch-to-buffer dbuffer) to see the buffer made ?
>> > 
>> > Without it I never see the BFRN buffer in the Emacs Buffers Menubar.
>> > 
>> > (defun print-alist (alist &optional bfrn)
>> > "Print Associateed List ALIST to the buffer BFRN."
>> > 
>> > (let* ( (bfname (or bfrn "ALIST"))
>> > (dbuffer (get-buffer-create (concat "𒆳 " bfname))) )
>> > 
>> > (with-current-buffer dbuffer
>> > (face-remap-add-relative 'default :background "blue")
>> > 
>> > (insert "\n ALIST \n\n")
>> > 
>> > (dolist (entry alist)
>> > 
>> > (let* ( (key (car entry) )
>> > (value (cdr entry) )
>> > (start (point)) )
>> > 
>> > ;; Insert key
>> > (insert (format " ━ %-8s" key))
>> > 
>> > ;; Colourise key
>> > (add-text-properties start (point)
>> > `(face (:foreground "green")))
>> > 
>> > ;; Insert associated value
>> > (insert (format "\n %s\n" value)) )) )
>> > 
>> > ;; Finally, display the buffer
>> > (switch-to-buffer dbuffer) ))
>> 
>> 
>> When I comment out `(switch-to-buffer dbuffer)' and evaluate the defun
>> in emacs -Q, I see "𒆳 ALIST" in the Buffers menu.
>> 
>> Steve Berman
>
> I am still experiencing the problem though.

Also when you run emacs -Q?

>                                              Is there possibility of conflicts
> with other buffers in some situations ?

I don't know what you mean here.

>                                          Is there a limit to the number of buffers
> that can be displayed in the Emacs Menubar ?

Yes, the default is 15; see user option buffers-menu-max-size.

>                                               It is the first time I am seeing 
> this problem.

Steve Berman

New buffer not showing up in Emacs Buffers Menubar

[Heime]

Sent with Proton Mail secure email.

On Tuesday, September 24th, 2024 at 8:34 PM, Stephen Berman <stephen.berman@gmx.net> wrote:

> On Tue, 24 Sep 2024 08:19:08 +0000 Heime heimeborgia@protonmail.com wrote:
> 
> > Sent with Proton Mail secure email.
> > 
> > On Tuesday, September 24th, 2024 at 7:41 PM, Stephen Berman
> > stephen.berman@gmx.net wrote:
> > 
> > > On Mon, 23 Sep 2024 22:25:17 +0000 Heime heimeborgia@protonmail.com wrote:
> > > 
> > > > Why do I need to call (switch-to-buffer dbuffer) to see the buffer made ?
> > > > 
> > > > Without it I never see the BFRN buffer in the Emacs Buffers Menubar.
> > > > 
> > > > (defun print-alist (alist &optional bfrn)
> > > > "Print Associateed List ALIST to the buffer BFRN."
> > > > 
> > > > (let* ( (bfname (or bfrn "ALIST"))
> > > > (dbuffer (get-buffer-create (concat "𒆳 " bfname))) )
> > > > 
> > > > (with-current-buffer dbuffer
> > > > (face-remap-add-relative 'default :background "blue")
> > > > 
> > > > (insert "\n ALIST \n\n")
> > > > 
> > > > (dolist (entry alist)
> > > > 
> > > > (let* ( (key (car entry) )
> > > > (value (cdr entry) )
> > > > (start (point)) )
> > > > 
> > > > ;; Insert key
> > > > (insert (format " ━ %-8s" key))
> > > > 
> > > > ;; Colourise key
> > > > (add-text-properties start (point)
> > > > `(face (:foreground "green")))
> > > > 
> > > > ;; Insert associated value
> > > > (insert (format "\n %s\n" value)) )) )
> > > > 
> > > > ;; Finally, display the buffer
> > > > (switch-to-buffer dbuffer) ))
> > > 
> > > When I comment out `(switch-to-buffer dbuffer)' and evaluate the defun
> > > in emacs -Q, I see "𒆳 ALIST" in the Buffers menu.
> > > 
> > > Steve Berman
> > 
> > I am still experiencing the problem though.
> 
> 
> Also when you run emacs -Q?
> 
> > Is there possibility of conflicts with other buffers in some situations ?
> 
> I don't know what you mean here.

That some buffers fail to display unless specifically instructed to do so.
 
> > Is there a limit to the number of buffers
> > that can be displayed in the Emacs Menubar ?
> 
> 
> Yes, the default is 15; see user option buffers-menu-max-size.

Then this is something that I would have to look into as I make
a lot of buffers for test.

Is there always a requirement to instruct pop-to-buffer, view-buffer, 
display-buffer, switch-to-buffer and display-like commands so that a 
new buffer gets shown.

;;    Directly repl
> > It is the first time I am seeing
> > this problem.
> 
> 
> Steve Berman

Re: New buffer not showing up in Emacs Buffers Menubar

[Stephen Berman]

On Tue, 24 Sep 2024 10:00:06 +0000 Heime <heimeborgia@protonmail.com> wrote:

> Sent with Proton Mail secure email.
>
> On Tuesday, September 24th, 2024 at 8:34 PM, Stephen Berman
> <stephen.berman@gmx.net> wrote:
>
>> On Tue, 24 Sep 2024 08:19:08 +0000 Heime heimeborgia@protonmail.com wrote:
>> 
>> > Sent with Proton Mail secure email.
>> > 
>> > On Tuesday, September 24th, 2024 at 7:41 PM, Stephen Berman
>> > stephen.berman@gmx.net wrote:
>> > 
>> > > On Mon, 23 Sep 2024 22:25:17 +0000 Heime heimeborgia@protonmail.com wrote:
>> > > 
>> > > > Why do I need to call (switch-to-buffer dbuffer) to see the buffer made ?
>> > > > 
>> > > > Without it I never see the BFRN buffer in the Emacs Buffers Menubar.
>> > > > 
>> > > > (defun print-alist (alist &optional bfrn)
>> > > > "Print Associateed List ALIST to the buffer BFRN."
>> > > > 
>> > > > (let* ( (bfname (or bfrn "ALIST"))
>> > > > (dbuffer (get-buffer-create (concat "𒆳 " bfname))) )
>> > > > 
>> > > > (with-current-buffer dbuffer
>> > > > (face-remap-add-relative 'default :background "blue")
>> > > > 
>> > > > (insert "\n ALIST \n\n")
>> > > > 
>> > > > (dolist (entry alist)
>> > > > 
>> > > > (let* ( (key (car entry) )
>> > > > (value (cdr entry) )
>> > > > (start (point)) )
>> > > > 
>> > > > ;; Insert key
>> > > > (insert (format " ━ %-8s" key))
>> > > > 
>> > > > ;; Colourise key
>> > > > (add-text-properties start (point)
>> > > > `(face (:foreground "green")))
>> > > > 
>> > > > ;; Insert associated value
>> > > > (insert (format "\n %s\n" value)) )) )
>> > > > 
>> > > > ;; Finally, display the buffer
>> > > > (switch-to-buffer dbuffer) ))
>> > > 
>> > > When I comment out `(switch-to-buffer dbuffer)' and evaluate the defun
>> > > in emacs -Q, I see "𒆳 ALIST" in the Buffers menu.
>> > > 
>> > > Steve Berman
>> > 
>> > I am still experiencing the problem though.
>> 
>> 
>> Also when you run emacs -Q?
>> 
>> > Is there possibility of conflicts with other buffers in some situations ?
>> 
>> I don't know what you mean here.
>
> That some buffers fail to display unless specifically instructed to do so.
>
>> > Is there a limit to the number of buffers
>> > that can be displayed in the Emacs Menubar ?
>> 
>> 
>> Yes, the default is 15; see user option buffers-menu-max-size.
>
> Then this is something that I would have to look into as I make
> a lot of buffers for test.
>
> Is there always a requirement to instruct pop-to-buffer, view-buffer, 
> display-buffer, switch-to-buffer and display-like commands so that a 
> new buffer gets shown.

If you mean the buffer names being displayed in the Buffers menu, no, that
should be automatic for the most recent buffers up to buffers-menu-max-size.

Steve Berman

Re: New buffer not showing up in Emacs Buffers Menubar

[Heime]

Sent with Proton Mail secure email.

On Tuesday, September 24th, 2024 at 10:39 PM, Stephen Berman <stephen.berman@gmx.net> wrote:

> On Tue, 24 Sep 2024 10:00:06 +0000 Heime heimeborgia@protonmail.com wrote:
> 
> > Sent with Proton Mail secure email.
> > 
> > On Tuesday, September 24th, 2024 at 8:34 PM, Stephen Berman
> > stephen.berman@gmx.net wrote:
> > 
> > > On Tue, 24 Sep 2024 08:19:08 +0000 Heime heimeborgia@protonmail.com wrote:
> > > 
> > > > Sent with Proton Mail secure email.
> > > > 
> > > > On Tuesday, September 24th, 2024 at 7:41 PM, Stephen Berman
> > > > stephen.berman@gmx.net wrote:
> > > > 
> > > > > On Mon, 23 Sep 2024 22:25:17 +0000 Heime heimeborgia@protonmail.com wrote:
> > > > > 
> > > > > > Why do I need to call (switch-to-buffer dbuffer) to see the buffer made ?
> > > > > > 
> > > > > > Without it I never see the BFRN buffer in the Emacs Buffers Menubar.
> > > > > > 
> > > > > > (defun print-alist (alist &optional bfrn)
> > > > > > "Print Associateed List ALIST to the buffer BFRN."
> > > > > > 
> > > > > > (let* ( (bfname (or bfrn "ALIST"))
> > > > > > (dbuffer (get-buffer-create (concat "𒆳 " bfname))) )
> > > > > > 
> > > > > > (with-current-buffer dbuffer
> > > > > > (face-remap-add-relative 'default :background "blue")
> > > > > > 
> > > > > > (insert "\n ALIST \n\n")
> > > > > > 
> > > > > > (dolist (entry alist)
> > > > > > 
> > > > > > (let* ( (key (car entry) )
> > > > > > (value (cdr entry) )
> > > > > > (start (point)) )
> > > > > > 
> > > > > > ;; Insert key
> > > > > > (insert (format " ━ %-8s" key))
> > > > > > 
> > > > > > ;; Colourise key
> > > > > > (add-text-properties start (point)
> > > > > > `(face (:foreground "green")))
> > > > > > 
> > > > > > ;; Insert associated value
> > > > > > (insert (format "\n %s\n" value)) )) )
> > > > > > 
> > > > > > ;; Finally, display the buffer
> > > > > > (switch-to-buffer dbuffer) ))
> > > > > 
> > > > > When I comment out `(switch-to-buffer dbuffer)' and evaluate the defun
> > > > > in emacs -Q, I see "𒆳 ALIST" in the Buffers menu.
> > > > > 
> > > > > Steve Berman
> > > > 
> > > > I am still experiencing the problem though.
> > > 
> > > Also when you run emacs -Q?
> > > 
> > > > Is there possibility of conflicts with other buffers in some situations ?
> > > 
> > > I don't know what you mean here.
> > 
> > That some buffers fail to display unless specifically instructed to do so.
> > 
> > > > Is there a limit to the number of buffers
> > > > that can be displayed in the Emacs Menubar ?
> > > 
> > > Yes, the default is 15; see user option buffers-menu-max-size.
> > 
> > Then this is something that I would have to look into as I make
> > a lot of buffers for test.
> > 
> > Is there always a requirement to instruct pop-to-buffer, view-buffer,
> > display-buffer, switch-to-buffer and display-like commands so that a
> > new buffer gets shown.
> 
> 
> If you mean the buffer names being displayed in the Buffers menu, no, that
> should be automatic for the most recent buffers up to buffers-menu-max-size.
> 
> Steve Berman

And the older ones would be removed from view ?  Hew does one set 
buffers-menu-max-size ?  With a setq as (setq buffers-menu-max-size new-size) 
or with a different command ?

Re: New buffer not showing up in Emacs Buffers Menubar

[Stephen Berman]

[resending because I mistakenly omitted the list address]

On Tue, 24 Sep 2024 11:32:57 +0000 Heime <heimeborgia@protonmail.com> wrote:
[...]
>> > Is there always a requirement to instruct pop-to-buffer, view-buffer,
>> > display-buffer, switch-to-buffer and display-like commands so that a
>> > new buffer gets shown.
>>
>>
>> If you mean the buffer names being displayed in the Buffers menu, no, that
>> should be automatic for the most recent buffers up to buffers-menu-max-size.
>>
>> Steve Berman
>
> And the older ones would be removed from view ?  Hew does one set
> buffers-menu-max-size ?  With a setq as (setq buffers-menu-max-size new-size)
> or with a different command ?

It's a user option, so M-x customize-option (or customize-variable) but
setq is also fine (in your init file if you want to persist it).

Steve Berman

Re: New buffer not showing up in Emacs Buffers Menubar

[Robert Pluim]

>>>>> On Tue, 24 Sep 2024 13:39:24 +0200, Stephen Berman <stephen.berman@gmx.net> said:

    Stephen> It's a user option, so M-x customize-option (or customize-variable) but
    Stephen> setq is also fine (in your init file if you want to persist it).

In emacs >= 29, `setopt' is the preferred way of setting custom
options in lisp code, since it ensures any custom-set functions are
run (although for this particular option it doesnʼt matter).

Robert
-- 

Re: New buffer not showing up in Emacs Buffers Menubar

[Heime]

Sent with Proton Mail secure email.

On Wednesday, September 25th, 2024 at 12:24 AM, Robert Pluim <rpluim@gmail.com> wrote:

> > > > > > On Tue, 24 Sep 2024 13:39:24 +0200, Stephen Berman stephen.berman@gmx.net said:
> 
> 
> Stephen> It's a user option, so M-x customize-option (or customize-variable) but
> 
> Stephen> setq is also fine (in your init file if you want to persist it).
> 
> 
> In emacs >= 29, `setopt' is the preferred way of setting custom
> 
> options in lisp code, since it ensures any custom-set functions are
> run (although for this particular option it doesnʼt matter).
> 
> Robert
> --

Although it does not matter, would setopt still be what one should really
use and stick with in a formal manner ?

Re: New buffer not showing up in Emacs Buffers Menubar

[Robert Pluim]

>>>>> On Tue, 24 Sep 2024 13:15:15 +0000, Heime <heimeborgia@protonmail.com> said:
    Heime> Although it does not matter, would setopt still be what one should really
    Heime> use and stick with in a formal manner ?

`setopt' is the correct thing to use. `setq' will work most of the
time and then will end up biting you at some point. The best way is of
course 'M-x customize'.

Robert
--