Eli,

Apologies for my previous rambling reply. Your time is supremely
valuable, and I should've been more mindful of that. I'm hoping you'll
allow me this mulligan (ahem):

> That depends on what the other end expects.  Does it expect latin-1 in
> this case?

Yes.

> Does emitting the single byte \330 produce the correct result in this
> case?

Yes.

> Then by all means please use
>
>    (encode-coding-string address 'latin-1)

I have updated my changes to reflect this.

> And those [tor/ssh] expect Latin-1 encoding in this case?

Yes.

When you've got a sec, please instruct me on how best to proceed (even
if that means buggering off 'til I've learned more about Emacs!). :)

Appreciate your patience, as always.
J.P.