Author: Jon L White
preface:X3J13 voted in January 1989 to adopt an extended definition of the loop
macro as a part of the forthcoming draft Common Lisp standard.
This chapter presents the bulk of the Common Lisp Loop Facility proposal,
written by Jon L White. I have edited it only very lightly to conform to the
overall style of this book and have inserted a small number of bracketed remarks,
identified by the initials GLS. (See the Acknowledgments to this second
edition for acknowledgments to others who contributed to the Loop Facility
proposal.)
Guy L. Steele Jr.