-----maxima-bounces at math.utexas.edu wrote: -----
>This looks like a problem with :lisp in wxMaxima.
In wxMaxima, the first input cannot be :lisp. After that, :lisp is OK, I
think:
(%i1) 42$
(%i2) :lisp (defun $makesimp (op ex) (cons (list ($verbify op) 'simp)
(reverse (cdr ex))));
$MAKESIMP
(%i2) makesimp("+",[b,a]);
(%o2) b+a
Barton