BTW, as of commit ea469db (3.1.0.49) on Linux x64, all tests pass for me with no unexpected failures. ASDF_TEST_LISPS="ccl clisp sbcl cmucl allegro allegromodern lispworks ecl_bytecodes ecl abcl xcl gcl"
PS: The code walkthrough is scheduled for Sunday January 26th 2014 at 1400 EST (1900 UTC)
—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org H. L. Mencken's Law: Those who can — do. Those who can't — teach.
Martin's Extension: Those who cannot teach — administrate.