22:52:08enedilbit it doesn't work. I get message that the return value is not a function
22:52:32Bikeyour problem isn't returning, your problem is that you meant (funcall f x)
22:52:40Bikeyou probably get a warning like "undefined function F"
23:12:54enedilBike: in fact it doesn't help if I use funcall, clisp shows "EVAL: (TR (LAMBDA (X) X)) is not a function name; try using a symbol instead"