Feature request: share search ring amongst emacses

[Dan Jacobson]

Feature request: share search ring amongst emacses.  I run one emacs
as me, the other as root (with red background turned to remind me of
my "batcommand" powers).

Anyway, often I search for something in emacs A and then remember that
I should have been searching in emacs B, and then I gots to type in
the search string all over again or do ... C-s M-y or something more that
just the C-s C-s that I want to.

Anyway: two emacses, different UID's, same $DISPLAY.  Maybe also make
it work for two emacs -nw's.
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