Why does `cd //' leave $PWD as `//'?

POSIX.2, in its description of `cd', says that *three* or more leading

slashes may be replaced with a single slash when canonicalizing the

current working directory.



This is, I presume, for historical compatibility.  Certain versions of

Unix, and early network file systems, used paths of the form

//hostname/path to access `path' on server `hostname'.



Section F:  Things to watch out for on certain Unix versions