Is this version dependent? Everything works except the very first example. At least on my systems, tab alone on the command line does nothing. a<tab> however, h

Is this version dependent? Everything works except the very first example. At least on my systems, tab alone on the command line does nothing. a<tab> however, has the expected response for in-path executable files that start with a. Also, *<tab> returns a simple directory listing of the pwd.