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Re: arithmetic expression from outside

X-seq: zsh-workers 44734
From: YAMAGUCHI Takanori <t-yama@xxxxxxxxx>
To: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
Subject: Re: arithmetic expression from outside
Date: Fri, 6 Sep 2019 14:48:22 +0900
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References: <69f3c9f0-b91b-beb1-d36c-854bb4eb3ff3@iij.ad.jp> <CAH+w=7a_Av6w58cMXOw8CoOunAAfr--xnWHis8i6woHDphwH6A@mail.gmail.com>

This behaviour looks to be unsafe.
I wish it had a feature to disable the recursive evaluation
of an arithmetic expression. Or at least zshmisc manpage
should be added the warning not to use unchecked input
in an arithmetic expression context.

References:
- arithmetic expression from outside
  - From: YAMAGUCHI Takanori
- Re: arithmetic expression from outside
  - From: Bart Schaefer

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