diff options
Diffstat (limited to 'src/propspec.lisp')
| -rw-r--r-- | src/propspec.lisp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/propspec.lisp b/src/propspec.lisp index 8572cae..d1fabd1 100644 --- a/src/propspec.lisp +++ b/src/propspec.lisp @@ -336,7 +336,8 @@ apply the elements of REQUIREMENTS in reverse order." :lambda (proplambda psym) :desc (lambda (&rest args) (strcat "Unapply: " (apply #'propdesc psym args))) - :check (complement (get psym 'check)) + :check (when-let ((check (get psym 'check))) + (complement check)) :hostattrs (lambda (&rest args) ;; run the :HOSTATTRS subroutine but throw away any ;; new hostattrs; when unapplying, the :HOSTATTRS |