+(deftest pss.0 (with-output-to-string (s) (print-separated-strings s "|" nil))
+ "")
+
+(deftest pss.1
+ (with-output-to-string (s) (print-separated-strings s "|" '("ab")) )
+ "ab")
+
+(deftest pss.2
+ (with-output-to-string (s) (print-separated-strings s "|" '("ab" "cd")))
+ "ab|cd")
+
+(deftest pss.3
+ (with-output-to-string (s) (print-separated-strings s "|" '("ab" "cd") nil))
+ "ab|cd")
+
+(deftest pss.4
+ (with-output-to-string (s)
+ (print-separated-strings s "|" '("ab" "cd") nil nil))
+ "ab|cd")
+
+(deftest pss.5
+ (with-output-to-string (s)
+ (print-separated-strings s "|" '("ab" "cd") nil '("ef") nil))
+ "ab|cd|ef")
+
+(deftest css.0 (concat-separated-strings "|" nil) "")
+(deftest css.1 (concat-separated-strings "|" nil nil) "")
+(deftest css.2 (concat-separated-strings "|" '("ab")) "ab")
+(deftest css.3 (concat-separated-strings "|" '("ab" "cd")) "ab|cd")
+(deftest css.4 (concat-separated-strings "|" '("ab" "cd") nil) "ab|cd")
+(deftest css.5 (concat-separated-strings "|" '("ab" "cd") nil '("ef")) "ab|cd|ef")
+
+(deftest f.1 (filter #'(lambda (x) (when (oddp x) x))
+ '(0 1 2 3 4 5 6 7 8 9)) (1 3 5 7 9))
+(deftest an.1 (appendnew '(a b c d) '(c c e f)) (a b c d e f))
+