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On 4/30/12 5:24 AM, Dan Douglas wrote:
> On Monday, April 23, 2012 04:56:09 PM Clark Wang wrote:
>> On Wed, May 5, 2010 at 01:57, Freddy Vulto <fvu...@gmail.com> wrote:
>>> It appears that `unset' is capable of traversing down the call-stack and
>>> ...
> 
> I reverse engineered most of this behavior a few months ago and wrote a 
> detailed explaination and example here:
> 
> http://wiki.bash-hackers.org/commands/builtin/unset#scope
> 
> Hopefully most of that is correct.

This is pretty much right on.  It's a nice piece of deduction.

Chet

- -- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    c...@case.edu    http://cnswww.cns.cwru.edu/~chet/
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