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

[Dmitry Gutov]

On 19.01.2021 19:56, Juri Linkov wrote:
> > > To make it more future-proof for possible other uses of the prefix arg,
> > > maybe better would be to use 'C-0 RET' with better mnemonics of 0 to
> > > mean deleting the window (like 'C-x 0' deletes the window).
> > Sorry, missed this message previously.
> >
> > I don't have a strong opinion on this, but seems like it would conflate the
> > "quit" action (what we want the command to do in this case) with the
> > "delete" action (which what the binding might imply).
> Yep, like the prefix argument KILL in quit-window.

Right, so it appears we don't have any suitable precedent, and either 
way could imply something we don't want it to.

I think C-u RET is probably fine, especially if we add a change like you 
described to compile-goto-error as well. But if anyone wanted to propose 
some other alternative, they're welcome to.