#!+sb-unicode character-string-p
#!+sb-unicode simple-character-string-p
array-header-p
- sequencep
+ sequencep extended-sequence-p
simple-array-p simple-array-nil-p vector-nil-p
simple-array-unsigned-byte-2-p
simple-array-unsigned-byte-4-p simple-array-unsigned-byte-7-p