restore(8) doesn't need to be setgid `tty', and never did.
restore(8) doesn't need to be setgid `tty', and never did.

At the times, restore(8) and rrestore(8) were the different
utilities.  rrestore(8) was installed setuid `root', while
restore(8) with usual ownership and privileges.  Later on,
on August 28, 1991 (what a coincidence!), rrestore(8) code
was merged with restore(8).  The setgid `tty' bit then was
accidentally put.

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