bug#55016: 28.1; xref-find-references finds no matches if project dir contains a space

[Eli Zaretskii]

> Date: Tue, 26 Apr 2022 15:28:57 +0300
> Cc: 55016@debbugs.gnu.org, p.stephani2@gmail.com, spepo.42@gmail.com
> From: Dmitry Gutov <dgutov@yandex.ru>
> 
> On 26.04.2022 15:00, Eli Zaretskii wrote:
> > If we just show those file names in some window, they don't need to be
> > re-quoted, I think.  Quoting is only needed if the resulting file
> > names will be passed to Lisp APIs to act on them.
> 
> They are not just shown. The file names are used when the user tries to 
> visit the reference (e.g. with RET).

Which command is invoked by RET in those cases?