

These notes correspond to *pcl-system-date* "4/21/87  April 21rst 1987".

The notes from the last release are stored as 3-19-notes.text

This release runs in:
  ExCL
  Lucid
  Symbolics Common Lisp (Genera)
  Vaxlisp (2.0)
  Xerox Common Lisp (Lyric Release)
  Kyoto Common Lisp (5.2)

CMU Lisp (nee Spice) should be working soon, I will announce another
release at that time.

Xerox Lisp users should FTP all the source files from /pub/pcl/ as well
as all the dfasl files from /pub/pcl/xerox/.  Included in the xerox
specific directory is a file called PCL-ENV, which provides some simple
environment support for using PCL in Xerox Lisp.


The major difference in this release is that defclass conforms to the
CLOS specification (pretty much I hope).  Previous warnings about what
would happen when defclass became CLOS defclass now apply.  Once major
difference is that PCL currently does require that all a classes
superclasses be defined when a defclass form is evaluated.  This will
change sometime soon.

Other small changes include:

Some more of the files have been renamed and restructured (as promised).

the defclass parsing protocol has changed

slotd datastructures are now instances of the class
standard-slot-description.

a performance bug in the ExCL port which causes method lookup and slot
access to cons needlessly.

a bug in the 3600 port which broke the printer for stack consed closures

make-specializable

a bug in Lucid lisp which made it impossible to say (compile-pcl) has
been patched around, this is the bug that manifested itself as NAME
being ubound.


As usual, please enjoy and send comments.