bug#50067: Context menus

[Juri Linkov]

>>>> All right. You still prefer the original patch, then?
>>> Yes, the original patch satisfies my needs, AFAICT.  It would be good
>>> to hear from Juri as well, though.
>> Sorry, I can't find the original patch.  This bug#50067 collected
>> so many different things, so it's now hard to find anything.
>
> Here it is: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=50067#183

Oh, I thought there were two patches: the patch above and also
the original patch.  But it the above is the original patch,
then I'd recommend to add more already discussed additions,
so the new option could provide at least these choices:

1. 'jump': Jump to the first location by selecting its window;
2. 'show': Show the first item, but keep focus in the Xref window;
3. 'move': Move point to the first item in the Xref window
   without showing it (maybe this should be the default behavior).

To be able to add later a similar variable for xref-find-references,
the new variable for xref-find-definitions could be named accordingly
with a name that refers to xref-find-definitions, for example,
xref-find-definitions-auto-jump.  Then later xref-find-references-auto-jump.