Re: Make call-process (and start-process?) filename handlers?

[Richard Stallman]

    But in the end, it's not a big problem: just implement another
    function that's just like call-process, except that it invokes a
    filename handler based on default-directory.  And then, various
    pieces of Lisp can be converted from the existing call-process to the
    new function ;-)

That's a much better approach.  That way, various Lisp programs can
support this remote behavior when it does the right thing for them.