After you made me aware of the circular list in lib/form.l, I changed
my 'ifwarn' function to skip circular lists by putting in the (nT
(length Prg)) test, like this:
(de ifwarn (Prg)
(when (and (lst? Prg) (nT (length Prg)))
(when (and (= (car Prg) 'if) (<> (length Prg) 4))
(println Prg) )
(mapcar ifwarn Prg)
However, this fix may not be the ultimate, because in lib/misc.l
there's a tougher problem, that can be illustrated by this ...
(length '(de *Day . (Mon Tue Wed Thu Fri Sat Sun .)))
.. which I'm not able to abort with Ctrl-C or Ctrl-D. Ctrl-Z does it.
Why does 'length' have such problems here?