🚀 go-pugleaf

I have seen articles complaining about the problems caused by mixed
addressing.  For example, "a!b!c@d.e!f" can be taken as equivalent to
"(c@d.e)!(f)!(a!b!c)" or "(e!f)!(c@d.e)!(a!b!c)".  Many other ambiguous 
combinations of addresses can be invented.

The solution is trivial though it would need a change in most
software.  Introduce symbols that allow you to group address
components.  I have used parentheses above, but they are already
taken.  Perhaps square brackets could be used.  Any machine can then
safely add its own address to the path, thus converting
     any_path
to:
     [myname!any_path]
The next machine can then add its own name thus:
     [[myname!any_path]@next]

So long as each change is accompanied by a new pair of brackets around
the entire result, there will never be any confusion.  The mail
software can also strip out redundant brackets, but their presence
will do no harm.
-- 
Rahul Dhesi
ARPA:  bsu-cs!dhesi@iuvax.cs.indiana.edu
UUCP:  {ihnp4,seismo}!{iuvax,pur-ee}!bsu-cs!dhesi