mappend function
maybe-print-unreadable-object macro
merge-error-candidates generic
+ merge-error-present-function generic
merge-lists function
sb-mop:method-specializers generic
once-only macro
cl:standard-object
merge-error-candidates
inconsistent-merge-error
+merge-error-present-function
+ inconsistent-merge-error
sb-mop:method-specializers
cl:standard-method