[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[no subject]
- To: (BUG LISP) at MIT-AI
- To: (BUG LISP) at MIT-MC
- Subject:
- From: MOON@MIT-AI
- From: JPG at MIT-MC (Jeffrey P. Golden)
- Date: Fri, 15 Jul 78 09:17:31 GMT
- Date: Sat, 15 Jul 78 09:07:00 GMT
- Cc: JPG at MIT-MC
- Original-date: 07/15/78 05:17:31 EDT
- Original-date: 15 JUL 1978 0507-EDT
MAKUNBOUND flushes the value cell. This is dangerous (you may have a
pointer to it on the stack), unnecessary (QUNBOUND can be used
instead to make unbound), and goes against BIBOP LISP where all atoms
are created with value cells. MACSYMA certainly wants QUNBOUND to be
stuck in instead, and if LISP is to provide the user with a MAKUNBOUND
function and only one, surely this should be it. If GLS and JONL do
not object to this change, I believe HIC is willing to make it.