I was just curious: Is there something you can pass to eval procedure
that using the local environment? e.g.,

(let ((foo 12)) (eval 'foo (this-environment)))

to get it to return 12. Of course, you could just

(let ((foo 12)) foo)

But suppose you were working with the identifier 'foo instead for some
reason. All I saw in docs was interaction-environment and null-
environment.