Pass in the DEFAULT argument to position() as documented, #'find. src/ChangeLog addition: 2011-01-14 Aidan Kehoe <kehoea@parhasard.net> * fns.c (Ffind): Use the correct subr information here, pass in the DEFAULT keyword argument value correctly. tests/ChangeLog addition: 2011-01-14 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el (list): Test #'find, especially the :default keyword, not specified by Common Lisp.