Re: [PATCH]: allow recursive variable inderection in arith

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

On Sun, Jan 31, 2021 at 01:29:36PM +0400, Vladimir N. Oleynik wrote:
> 
> My patch for allow recursive variable inderection in arith
> and simplify allow $(( )). Originaly from my arith in busybox
> 
> Before patch:
> $ a=b b=2; echo $((a))
> dash: 1: Illegal number: b
> 
> After patch:
> $ a=b b=2; echo $((a))
> 2
> a=b b="a*2"; echo $((a))
> ./dash: 4: arithmetic expression: expression recursion loop detected: "a"

Again this does not belong in dash because one of the principal
goals is to be minimal.

Thanks,
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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