bug#33870: 27.0.50; xref-goto-xref not configurable

[João Távora]

On Tue, Jan 8, 2019 at 9:25 AM martin rudalics <rudalics@gmx.at> wrote:

> So before making this function public, we should resolve this calling
> convention.

Makes sense.  Then, in my view, the logical sequence to fix this bug is

A. First do these changes to window.el and publish a decent
   window-display-buffer calling convention.

B. Push a xref.el based on the new function that doesn't change
the xref UI.

C. Discuss the xref.el UI in the other bug.

> Personally, I'd proceed as follows:
>
> (1) Deprecate the variable 'display-buffer-mark-dedicated'.
>
> (2) Remove the DEDICATED argument from this function.
>
> (3) Add a 'dedicated' action alist entry to implement the
>      functionality.

When do you think you can do this?  Be advised there is indeed some
third-party code already relying on the internal "--" version of this function.
We might be breaking some of that code (otoh it was "asking for it" for
using such an implementation detail).

> And we should [...] and another thing

Do both of these more ambitious refactorings really need to
make it in before we can do B as outlined above? Or can we
do them later in parallel?

João