A general, non-filesystem-specific pathname library.

Returns just the basename of path, with any directory removed. If path does not contain a directory separator, return the whole path. If path ends in a directory separator (i.e. path is a directory), or is empty, return the empty string.Returns just the directory of path. If path is relative (or empty), return ".".Returns the rightmost extension of path, not including the ".". If there is no extension, returns #f. The extension will always be non-empty and contain no "."s.Returns path with the extension, if any, removed, along with the ".".Returns path with the extension, if any, replaced with ext.Returns path with any leading ../ removed.Returns #t iff path is an absolute path, i.e. begins with "/".Returns #t iff path is a relative path.Returns the suffix of path relative to the directory dir, or #f if path is not contained in dir. If the two are the same (modulo a trailing "/"), then "." is returned.Resolve path relative to the given directory. Returns path unchanged if already absolute.Returns a normalized version of path, with duplicate directory separators removed and "/./" and "x/../" references removed. Does not take symbolic links into account - this is meant to be abstract and applicable to paths on remote systems and in URIs. Returns path itself if path is already normalized.Return a new string representing the path where each of args is a path component, separated with the directory separator. args may include symbols and integers, in addition to strings.