bug#59381: Should xref--marker-ring be per-window?

[Eli Zaretskii]

> From: Ackerley Tng <ackerleytng@gmail.com>
> Date: Sun, 20 Nov 2022 10:11:30 -0800
> Cc: Dmitry Gutov <dgutov@yandex.ru>, 59381@debbugs.gnu.org, juri@linkov.net
> 
> What does everyone think if we do the baseline of just creating a new
> stack per-window (no copying) and then waiting to see if we get
> feedback once people start using it?

If this is optional and can be disabled, I don't think I mind.