The undocumented maxima func <directory>
(line 249: suprv1.lisp) had the definition:
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(defun $directory (path)
(cons '(mlist) (mapcar 'namestring (directory ($filename_merge path)))))
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The maxima function <filename_merge> has only documentation
for the two arg form:
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filename_merge (path, filename)
Constructs a modified path from path and filename.
If the final component of path is of the
form ###.something, the component is replaced with
filename.something. Otherwise, the final
component is simply replaced by filename.
The result is a Lisp pathname object.
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>From that help file info, it is not clear
what the one arg form does, as used in
the def. of $directory.
Ted Woollett