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Re: Should [[ -v 1 ]] be supported?

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  Re: Should [[ -v 1 ]] be supported? Chet Ramey <chet.ramey@case.edu> - 2018-12-28 18:19 -0600

#14992 — Re: Should [[ -v 1 ]] be supported?

On 12/27/18 3:11 PM, Martijn Dekker wrote:

> Consistency might be a better argument. If [[ -v foo ]] is equivalent to [[
> -n ${foo+s} ]] for variables (with the advantage that you don't need 'eval'
> to handle arbitrary values of 'foo'), then perhaps it's not unreasonable to
> expect [[ -v 1 ]] to be equivalent to [[ -n ${1+s} ]].

The completeness argument is more rigorous, and there's a case to add this
in a future version of bash. He didn't make that argument, though.

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

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