On 4/8/13 9:05 AM, Greg Wooledge wrote:
> If the upstream
> variable has a value assigned, then you can; but if it's empty, then you
> can't.
One clarification: a variable is unset unless it has had a value assigned.
There might be some placeholder there with some type information, but the
variable is unset. There might be some inconsistencies in how bash treats
such variables, and I can fix those, but the above is how it's supposed
to be.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
