bug#48478: 28.0.50; yank-from-kill-ring and kill-ring-yank-pointer

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: 48478@debbugs.gnu.org
> Date: Thu, 27 May 2021 01:09:33 +0300
> 
> When read-from-kill-ring returns an edited string,
> how yank-from-kill-ring could use it to adjust kill-ring-yank-pointer?

read-from-kill-ring could store the pointer in some variable, I guess?

> > yank-from-kill-ring is a new function, and its return value isn't
> > documented.  So you could change it to return kill-ring-yank-pointer
> > instead, and then yank-pop could move it.
> 
> I don't understand what value of kill-ring-yank-pointer
> should be returned: its old value or some modified value?

It depends on whether we add the edited string to the kill ring or
not.  Currently, we don't add it, so I think the value should be that
of the unedited entry in the kill ring.

> BTW, the recent fix in ef7a6eec20 broke such use case:
> M-w on some region, but then M-y M-p doesn't insert the last item
> to the minibuffer, i.e. the same item that is inserted to the buffer

Sorry, I don't understand how does minibiffer enter the picture.  Can
you show a complete recipe?