Common Lisp the Language, 2nd Edition
Logical pathname namestrings are recognized by the functions logical-pathname
and translate-logical-pathname. The host portion
of the logical pathname namestring and its following colon must appear in
the namestring arguments to these functions.
The function parse-namestring recognizes a logical pathname namestring when the host argument is logical or the defaults argument is a logical pathname. In this case the host portion of the logical pathname namestring and its following colon are optional. If the host portion of the namestring and the host argument are both present and do not match, an error is signaled. The host argument is logical if it is supplied and came from pathname-host of a logical pathname. Whether a host argument is logical if it is a string equal to a logical pathname host name is implementation-defined.
The function merge-pathnames recognizes a logical pathname namestring when the defaults argument is a logical pathname. In this case the host portion of the logical pathname namestring and its following colon are optional.
Whether the other functions that coerce strings to pathnames recognize logical pathname namestrings is implementation-defined. These functions include parse-namestring in circumstances other than those described above, merge-pathnames in circumstances other than those described above, the :defaults argument to make-pathname, and the following functions:
compile-file file-write-date pathname-name compile-file-pathname host-namestring pathname-type delete-file load pathname-version directory namestring probe-file directory-namestring open rename-file dribble pathname translate-pathname ed pathname-device truename enough-namestring pathname-directory wild-pathname-p file-author pathname-host with-open-file file-namestring pathname-match-pNote that many of these functions must accept logical pathnames even though they do not accept logical pathname namestrings.
