wanted: unused SYMBOL-MACROLET warning

[William Halliburton]

Code like

(defun foo ()
 (let ((x 'baz))
   ))

issues a "The variable X is defined but never used."

while

(defun foo ()
  (symbol-macrolet ((x 'baz))
    ))

and similarly

(defun foo (a)
  (with-slots (x) a
    ))

are silent.

[Nikodemus Siivola (nikodemus)]

A style-warning, yes.