Re: How to load files with Mac line ending?

See the documentation on external-formats.  The best place to find the
several things you need is by looking up "external" in the
documentation permuted index.  But see especially section 5.0 of the
iacl document.

For reading Mac line break conventions, you want an external format
composed with :e-cr (which is the Mac line conventions).  You might
want this one

cl-user(11): (find-external-format '(:latin1 :e-cr))
#<external-format (:latin1-base :e-cr) @ #x71c4f3e2>

If you are concerned only with cl:load, see the :external-format
argument to load (and compile-file, etc.).  Otherwise, you might
execute something like

 (setf (excl:locale-external-format *locale*)
   (find-external-format '(:latin1 :e-cr)))

to change the default more-or-less globally, if that's really what you
want to do.

Bill Gates and Steve Jobs each were shortsighted technical idiots for
adopting the conventions they did at the times they did.