Hi Juri,

On 30/08/2023 19:50, Juri Linkov wrote:
>> Thanks for the pointer! That is a long thread so I only skimmed it. I
>> think you meant this snippet in [0]:
>>
>>> (defun project-other-window-command ()
>>>    (interactive)
>>>    (other-window-prefix)
>>>    (set-transient-map (make-composed-keymap project-prefix-map
>>>                                             project-other-window-map)))
> Exactly.  And the same for the frame command in the most recent patch
> I posted to bug#63648, and I confirm that your bug report is fixed with it.
> 
>> That indeed fixes the issue. My only concern is that
>> `other-window-prefix' is a new function introduced in Emacs 28.
> Indeed, it would take more efforts to provide backward-compatibility
> for older Emacs versions.

I think we can install this (tweaked) part of your changes from that 
other bug to close this report.