bug#44611: Prefix arg for xref-goto-xref

[Dmitry Gutov]

Hi Eli,

On 23.12.2020 17:08, Eli Zaretskii wrote:
> > There are already two different modes: the first is
> > defined by the user option xref-show-definitions-function
> > (by default, xref--show-defs-buffer), the second is defined by
> > xref-show-xrefs-function (by default, xref--show-xref-buffer).
> >
> > It's fine to use TAB to bury the output buffer in the first case,
> > but not in the second case.
> I'm okay with this distinction, provided we decide that we will try to
> keep only these two variants, as much as possible.

Let me get this straight:

You oppose changing the TAB binding, which is currently documented to be 
present in the UI for both cases (and *is* present).

But you're fine with creating a +1 subtly different behavior between the 
cases, by changing the TAB binding in only one of them?