How to check if a path *could* be a legal path?

[Roger Binns]

Heather Coppersmith wrote:
> And "/" is still reserved for the directory separator.

Unless you use older versions of PC-NFS in which case you
could create files with '/' in them.  You could never
delete them from the server side though :-)

The easiest way of solving this whole problem is to
copy how Microsoft does it!  They create a new file/folder
named "new file" or "new folder" and then put you in rename
mode.  If the user presses escape, delete the file,
else rename it.

Roger