From: Herbert Xu <herbert@gondor.apana.org.au>
To: "Vladimir N. Oleynik" <dzo@simtreas.ru>
Cc: dash@vger.kernel.org
Subject: Re: [PATCH]: allow recursive variable inderection in arith
Date: Fri, 5 Apr 2024 16:37:59 +0800 [thread overview]
Message-ID: <Zg+4Z9R7bT1nYoGf@gondor.apana.org.au> (raw)
In-Reply-To: <ecf90382-e5b9-9b0c-c73b-c564a660ee20@simtreas.ru>
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@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
next prev parent reply other threads:[~2024-04-05 8:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-29 19:49 [PATCH]: allow $(()) Vladimir N. Oleynik
2021-01-31 9:29 ` [PATCH]: allow recursive variable inderection in arith Vladimir N. Oleynik
2024-04-05 8:37 ` Herbert Xu [this message]
2024-04-05 8:36 ` [PATCH]: allow $(()) Herbert Xu
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