not support multibyte unicode character like \xAA\xBB\xCC with external-format

[muyinliu]

#?"\xe9\x87\x8f\xe4\xbb\xb7"

=>

"�价"

correct result should be "量价"

My temp solution is:

(babel:octets-to-string 
 (make-array 6 
             :element-type '(unsigned-byte 8) 
             :initial-contents (mapcar #'char-code
                                       (coerce #?"\xe9\x87\x8f\xe4\xbb\xb7"
                                               'list)))
 :encoding :utf-8)

=>

"量价"

[dieggsy]

This isn't the same as what you're asking, but here are a couple alternative ways to achieve that string:

CL-USER> #?"\N{CJK Unified Ideograph-91CF}\N{CJK Unified Ideograph-4EF7}"
"量价"

Or more simply

CL-USER> #?"\x{91CF}\x{4EF7}"
"量价"