bug#31641: 26.1; iter-do variable not left unused warning

[Lars Ingebrigtsen]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> FWIW, I find the above expansion to provide somewhat "dirty" semantics
> in the sense that
>
>     (let ((funs '()))
>       (iter-do (n i) (push (lambda () n) funs))
>       funs)
>
> will return a list of functions which all return the same value (the
> last `n`).
>
> You can clean up this semantics and the warning at the same time by
> using an expansion like:

If I'm reading that correctly, that does seem like more obvious
semantics, but is it too late to change this now?  I'm not sure how much
generator.el is used in the wild yet...

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