bug#48328: switch-buffer-other-window keep-focus [POC INCLUDED]

[Eli Zaretskii <eliz@gnu.org>]

> Date: Mon, 10 May 2021 01:37:17 -0400
> From: Boruch Baum <boruch_baum@gmx.com>
> 
> I was going through my init file, and realized that something I thought
> was part of emacs-core was actually my simple wrapper function. IMO,
> it's sensible and I find it very convenient when dealing with buried
> buffers being used for reference (eg. occur, grep, help).
> 
> All it does is add a prefix-arg control to function
> `switch-to-buffer-other-window' (C-x 4 b).
> 
> For your consideration:
> 
> (defcustom my-switch-to-buffer-other-window-keep-focus nil
>   "Controls focus of buffer-switch to other window.
> When non-NIL, function `my-switch-to-buffer-other-window' keeps
> focus in the current window. This can be over-ridden at run-time
> by passing that function a PREFIX-ARG."
>   :type 'boolean)
> 
> (defun my-switch-to-buffer-other-window (buffer-or-name &optional norecord)
>   "Wrapper to allow keeping focus in current window.
> Performs action of function `switch-to-buffer-other-window', but
> refers to variable `my-switch-to-buffer-other-window-keep-focus'
> to determine whether to change focus to the other window. You can
> over-ride that setting by calling this function with a
> PREFIX-ARG."

I use "C-x 4 C-o", which is built-in, for the same purpose.  Doesn't
it do what you want here?