bug#47012: xref copies keymap properties to minibuffer

[Dmitry Gutov]

On 25.03.2021 23:28, Juri Linkov wrote:
> > > Some commands already use variable *-history-variable, so adding
> > > project-regexp-history-variable wouldn't cause a new precedent.
> > Could you give an example?
> What I tried is C-h v *-history-variable TAB
>
>    minibuffer-history-variable
>    query-replace-from-history-variable
>    query-replace-to-history-variable
>    y-or-n-p-history-variable
>
> Maybe other commands use another suffix (probably not).

That's what my search has shown, too: a few instances, all from pretty 
high-level features.

> > And ideally, we should be also able to answer the question why some
> > packages have their own variables, and others have "-variable variables".
> I don't know.
>
> > If it's just historical reasons, as it often is, maybe
> >
> >    (defvar project-regexp-history-variable 'grep-regexp-history)
> >
> > will be good enough.
> This would a good thing to do.

Let's go with this one, then. At least for now.

Meaning, your patch plus a change of the default value to 
'grep-regexp-history.

Thank you.