alien_guy <l@l.org> wrote:
+---------------
| fairchild.anthony@gmail.com wrote:
| > Is there any way to write the definition of TEST so that KEY-PAIRS does
| > not contain the keys X, Y and Z?  Without explicitly removing them in
| > the function body of course ;-)
| 
| No.
+---------------

The same answer, a little less tersely:  ;-}

    http://alu.org/HyperSpec/Body/sec_3-4-1-4.html
    3.4.1.4 Specifiers for keyword parameters
    ...
    When keyword parameters are processed, the same arguments are
    processed that would be made into a list for a rest parameter.
    It is permitted to specify both &REST and &KEY. In this case the
    remaining arguments are used for both purposes; that is, all
    remaining arguments are made into a list for the rest parameter,
    and are also processed for the &KEY parameters.

Also note that <http://alu.org/HyperSpec/Body/sec_3-4-1.html>
"3.4.1 Ordinary Lambda Lists" requires that &REST come immediately
*before* &KEY [if both are present], so you can't get around it by
trying to manipulate the order or content of "the remaining arguments".


-Rob

-----
Rob Warnock			<rpw3@rpw3.org>
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