211: "keywords processing"
a. :ALLOW-OTHER-KEYS T should allow a function to receive an odd
number of keyword arguments.
+ e. Compiling
+
+ (flet ((foo (&key y) (list y)))
+ (list (foo :y 1 :y 2)))
+
+ issues confusing message
+
+ ; in: LAMBDA NIL
+ ; (FOO :Y 1 :Y 2)
+ ;
+ ; caught STYLE-WARNING:
+ ; The variable #:G15 is defined but never used.
+
212: "Sequence functions and circular arguments"
COERCE, MERGE and CONCATENATE go into an infinite loop when given