[Sbcl-devel] pathnames

[Greg B. <gwb...@se...>]

Running sbcl1.3.18 64bit, under linux mint 18.1

Not logical pathnames, but making relative pathnames
using a function:

  (make-pathname :directory '(:relative "D"))

->#P"D/"

Wrap this in a function

  (defun m-target (f-dir)
        (make-pathname :directory '(:relative f-dir)))

-> M-TARGET

(m-target "D")

-> SIMPLE-ERROR condition with message

F-DIR is not allowed as a directory component.

Evidently there are many things I do not understand about pathnames. 
ordinary and logical.

Thanks for advice/assistance on what is, sigh, probably an elementary 
matter.

Greg Bennett