bug#34294: 27.0.50; flymake-start-on-save-buffer has no effect

[martin rudalics]

>> IIRC you had problems fitting the window to its buffer afterwards.
>> Shouldn't we investigate that first?
>
> Yes, the problem was fitting the xref window after it's displayed.

What is going wrong here?  If with emacs -Q and
display-buffer-in-direction.el loaded I evaluate say

(display-buffer
 (get-buffer-create "*text*")
 '((display-buffer-in-direction)
   (direction . right)
   (window-width . 20)))

I get a 20 character wide window.  If I put some text in that buffer
and use 'fit-window-to-buffer' instead of 20, Emacs fits the window to
its buffer as expected.  What is different with the xref window?

martin