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Variables can’t contain NUL

From: Garreau\, Alexandre
Subject: Variables can’t contain NUL
Date: Sun, 20 May 2018 04:56:48 +0200
User-agent: Gnus (5.13), GNU Emacs 25.1.1 (x86_64-pc-linux-gnu)

On 2015-11-13 at 07:17, Greg Wooledge wrote:
> Actually in the most general case, where those output streams may
> contain NUL bytes, it requires two temp files, because you can't store
> arbitrary data streams in bash variables at all.

Why do bash variables use 0-terminated arrays instead of arrays structure
with a length attribute?

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