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Date: Sun, 1 Dec 2019 23:38:48 +0000
From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: zsh-users@zsh.org
Subject: Re: shuffle array
Message-ID: <20191201233848.7selcpkvenlu65px@tarpaulin.shahaf.local2>
References: <867e3jxtao.fsf@zoho.eu>
 <20191129064215.GA14095@prometheus.u-strasbg.fr>
 <8636e7w0w9.fsf__36104.0529723809$1575015640$gmane$org@zoho.eu>
 <20191201200719.anzbs27c7phgdnmm@chaz.gmail.com>
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Stephane Chazelas wrote on Sun, Dec 01, 2019 at 20:07:19 +0000:
> array=("${(0@)$(printf '%s\0' "$array[@]" | shuf -z)[1,-2]}")
> 
> But that would still not work for array elements containing
> NULs.

I think the following would work? —

    typeset -a l=(…)
    eval "l=(" $(print -rl -- "${(@qqqq)l}" | shuf) ")"

shuf(1) expects newline-separated output, and the output of ${(qqqq)} never
has literal newlines.