Re: message from execute-extended-command doesn't land in the Messages buffer

[Richard Stallman]

    A nice feature of Emacs -- namely that of showing in the message
    area the keystroke one could have used  instead of doing it the
    long way around with M-x  -- fails to put that message in the
    *Messages* buffer.

That is intentional, because these messages are just hints,
not reports about the status of editing.
I expect most users would rather exclude those hints from
*Messages*, so that more messages that give real information
about the editing session will remain there.

I think we should not change that, but rather add a hook you could use
to speak these messages.  If someone wants to do it, please do it.