Re: "simplifications"

[Richard Stallman]

    Personally, I think that we should make the byte compiler optimize the
    unnecessary binding away.  But until that is the case, please don't
    gratuitously replace (car (cdr ...)) with (cadr ...).

Maybe we could improve the handling of defsubst
to recognize that that binding is unnecessary.
To handle simple cases like this, it is enough to scan
the bytecode instructions and see that they don't call
any functions or refer to that variable.

I think the place to do this is in `byte-compile-unfold-lambda'.

Is someone interested?