On 17/01/2023 12:04, martin rudalics wrote:
>  > Thanks, this one reminds me of some previous patch in the respective
>  > bug report: repeated set-frace-attribute are stable WRT the frame
>  > size, but resizing the frame with the mouse and then evaling the
>  > set-frame-attribute form resizes the frame (in the smaller direction).
> 
> That's the one where we then tried to make the frame larger by an entire
> size increment minus the scaling residue.  Which means that here we
> should make the frame larger by an entire size increment in the hope
> that we size it back when we get notified.  Please try again.

This time around, the frame jumps in size a little bit, even time after 
I first resize with a mouse and then evaluate the set-face-attribute form.