+(deftest :rcs.1 (remove-char-string #\space "") "")
+(deftest :rcs.2 (remove-char-string #\space "a") "a")
+(deftest :rcs.3 (remove-char-string #\space "ab") "ab")
+(deftest :rcs.4 (remove-char-string #\space "a b") "ab")
+(deftest :rcs.5 (remove-char-string #\space " a b") "ab")
+(deftest :rcs.6 (remove-char-string #\space "a b ") "ab")
+(deftest :rcs.7 (remove-char-string #\space "a b c ") "abc")
+(deftest :rcs.8 (remove-char-string #\space "a b c d") "abcd")
+