bug#46908: 28.0.50; Dozens of spurious markers in buffer-undo-list

[martin rudalics]

> Independently from the window-point marker?  I don't know if there is a
> relation to the window-point marker, probably not, because, if there is,
> I guess we would not see dozens of _different_ markers.  These could be
> copies of the window-point marker created somewhere, I have no clue.

When I read the discussion on emacs-help I tried with `buffer-undo-list'
nil and doing some window modifications but didn't find a smoking gun.
So I'm afraid you have to look into your undo lists more closely to find
out whether some `with-silent-modifications' are missing.  Maybe
'winner-mode' and its window configuration and active region handling
can give a clue.

martin