>> If `cl-once-only-multiple' is fine by you then I would prefer that over
>> `cl-once-only-rest' and `cl-once-only-mult'.  It would help to get more
>> suggestions, but I don't think anyone else will be chiming in at this
>> point.
>
> It's just really long :)

I do agree that it's decently long, but it's probably fine...?
`cl-destructuring-bind' is the same length and I don't find that too
annoying to write out, though maybe that's just me.

> Let's give ourselves time to think of something shorter.

I don't have any new ideas for the name, but here's a second draft which
tries to adapt the example used in `cl-once-only'.  I was unable to get
the `mapcar' in the first example any more concise, so some thoughts on
rewording and fixing various parts of the text would be nice.

If Drew wants to start a new conversation to move `cl-once-only' (and
also this) out of cl-lib we can also just go with any name now and then
finalize it afterwards, though of all the names the one I favor is still
`cl-once-only-multiple' above all others (sans `cl-once-only*' which is
not an option - unless if you changed your mind about it?).