Asymmetry between directory-exists-p and directory-pathname-p

[renzo-orsini]

directory-exists-p returns non nil for strings that are interpreted as existing directory names, as "" or ".." in unix (the documentation says: "Checks whether the file named by the pathname designator pathspec exists and if it is a directory"). Similarly, (pathname-absolute-p "") return T, or (pathname-relative-p "..") returns T, etc.
directory-pathname-p instead returns nil for unix directory names as "~" or "..", and this is counter-intuitive given the above results. I think that this functions should returns the same result as directory-exists-p for those special strings, since they are valid directory pathnames (at least in unix-like notation).

[stassats]

directory-pathname-p tells if the pathname designates a directory, not if it's actually a directory.