+
+#-(or allegro lispworks)
+(define-condition parse-error (error) ())
+
+(defun shrink-vector (str size)
+ #+allegro
+ (excl::.primcall 'sys::shrink-svector str size)
+ #+sbcl
+ (sb-kernel:shrink-vector str size)
+ #+cmu
+ (lisp::shrink-vector str size)
+ #+lispworks
+ (system::shrink-vector$vector str size)
+ #+(or allegro cmu sbcl lispworks)
+ str
+ #-(or allegro cmu sbcl lispworks)
+ (subseq new-string 0 (incf new-i)))