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Re: "unset var" pops var off variable stack instead of unsetting it


From: Chet Ramey
Subject: Re: "unset var" pops var off variable stack instead of unsetting it
Date: Mon, 20 Mar 2017 16:32:10 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:45.0) Gecko/20100101 Thunderbird/45.8.0

On 3/20/17 4:29 PM, Stephane Chazelas wrote:

>> I believe he means the behavior of `a=0; a=1 eval unset a', which Posix
>> implicitly requires affect the global scope and results in a being unset
>> when the statement completes.
> [...]
> 
> See also:
> 
> $ bash -c 'f() { unset a; echo "$a";}; a=1; a=2 f'
> 1
> 
> already mentioned.

A distinction without a difference; the behavior is explicitly the same.

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



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