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| ANSI Common Lisp 20 Files 20.2 Dictionary of Files
20.2.2 probe-file | Function
Syntax: probe-file pathspec truename Arguments and Values: pathspec - a pathname designator. truename - a physical pathname or nil. Description: probe-file tests whether a file exists. probe-file returns false if there is no file named pathspec, and otherwise returns the truename of pathspec. If the pathspec designator is an open stream, then probe-file produces the truename of its associated file. If pathspec is a stream, whether open or closed, it is coerced to a pathname as if by the function pathname. Affected By: The host computer's file system. Exceptional Situations: An error of type file-error is signaled if pathspec is wild. An error of type file-error is signaled if the file system cannot perform the requested operation. See Also: truename, open, ensure-directories-exist, pathname, logical-pathname, Section 20.1 File System Concepts, Section 21.1.1.1.2 Open and Closed Streams, Section 19.1.2 Pathnames as Filenames Allegro CL Implementation Details: See Extensions to cl:probe-file in implementation.htm. Note the links are to the documentation for the current Allegro CL version. Replace /current/ in the URL with the Allegro CL version number to see similar documentation is earlier releases.

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- File last updated 02-07-2019