On Lisporks type-specifier-p should use type:valid-type-specifier

[Yehouda]

polymorphic-functions/src/utils.lisp

Line 47 in 9abdaf3

(defun type-specifier-p (type-specifier)

To make it work on LispWorks, type-specifier--p should use type:valid-type-specifier on lispworks.

Add

#+lispworks (type:valid-type-specifier type-specifier)

and also add lispworks in the #- line:

polymorphic-functions/src/utils.lisp

Line 57 in 9abdaf3

#-(or sbcl openmcl ecl lisp)