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From: Sebastian Gniazdowski <sgniazdowski@gmail.com>
Date: Sat, 9 Nov 2019 08:26:30 +0100
Message-ID: <CAKc7PVCD7e=vATDBc7px1d4XNYiKu1=2iZP9YaJ5PutgsDTsoQ@mail.gmail.com>
Subject: What's the reasoning behind z & s returning nular for empty input?
To: Zsh Users <zsh-users@zsh.org>
Content-Type: text/plain; charset="UTF-8"

Hi
arr=( "${(s:,:):-}" )
print -r ${#arr} ${(q)arr}
Output: 1 ''

arr=( "${(z):-}" )
print -r ${#arr} ${(q)arr}
Output: 1 ''

I guess the code is returning the nular (or something similar, as
nular is not defined in subst.c). I wonder why? Is the reason
historical? I always have to add exceptions to the code, especially
for (z). Maybe I'm not seeing some reason for this behavior?

-- 
Sebastian Gniazdowski
News: https://twitter.com/ZdharmaI
IRC: https://kiwiirc.com/client/chat.freenode.net:+6697/#zplugin
Blog: http://zdharma.org