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| ANSI Common Lisp 19 Filenames 19.4 Dictionary of Filenames
19.4.5 pathnamep | Function
  Syntax: pathnamep object generalized-boolean Arguments and Values: object - an object. generalized-boolean - a generalized boolean. Description: Returns true if object is of type pathname; otherwise, returns false. Examples:
       (setq q "test")   "test"
       (pathnamep q)  false
       (setq q (pathname "test"))
       #S(PATHNAME :HOST NIL :DEVICE NIL :DIRECTORY NIL :NAME "test" :TYPE NIL
             :VERSION NIL)
       (pathnamep q)  true
       (setq q (logical-pathname "SYS:SITE;FOO.SYSTEM"))
       #P"SYS:SITE;FOO.SYSTEM"
       (pathnamep q)  true
  Notes:
       (pathnamep object) ==(typep object 'pathname)
Allegro CL Implementation Details: None.

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