bug#53758: 28.0.91; Recursive edit during dired-do-find-regexp-and-replace breaks isearch

[Juri Linkov]

>> Thanks, now everything is clear.  Then it can be simplified by this patch:
>
> Thanks!
>
> Are these changes independent? That is, will the new version of xref
> continue to work with Emacs 26.1?

It should continue to work.  Could you suggest how this
independent change in xref could be tested?  I see that
dired-do-find-regexp-and-replace replaces all matches,
but xref--query-replace-1 tries to skip some matches.
What test could emulate the case where some matches
should be skipped?