hi!
sorry for the delay, cleaning up my starred mails... :)
#1. (SETF LOGBITP) is not defined in ACL 8.1 (nor in CLISP), and as far as I can tell isn't part of the standard nor can be portably defined.
I'm changing (SETF (LOGBITP x y) z) to (SETF y (DPB z (BYTE 1 x) y) (2 places). Maybe (SETF LDB) is better?
#2. It seems that cl-serializer assumes that objects of type BASE-CHAR must be 8-bit characters, and thus can be encoded in a single byte. But this isn't the case in Allegro, where (TYPEP (CODE-CHAR 257) 'BASE-CHAR) is true. I didn't find a good way to get into the type detection logic to cause multi-byte characters to do the right thing. Suggestions?
for the record, both of these issues should be dealt with in hu.dwim.serializer.
http://dwim.hu/darcsweb/darcsweb.cgi?r=HEAD%20hu.dwim.serializer;a=summary