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Thanks! And wow this is cool.

• phoe-krk 6y ago
  Trivia: Kent M. Pitman (also known as kmp) is the father of the condition system as it exists nowadays. The code in the book is based on Portable Condition System - a library that I have created, and Portable Condition System itself is in turn based on the original implementation of the condition system available at http://www.nhplace.com/kent/CL/Revision-18.lisp http://www.nhplace.com/kent/CL/Revision-18.lisp After a wee bit of massaging that code to compile it on modern Lisp implemenations (the above code is CLtL1, which is an old version of Common Lisp from 1984), it still works!