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From: Jason L Tibbitts III <tibbs@math.uh.edu>
To: zsh-workers@zsh.org
Subject: "bad substitution" error for ${a[b]}
Date: Wed, 15 Jul 2015 15:03:15 -0500
Message-ID: <ufatwt5kx30.fsf@epithumia.math.uh.edu>
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I'm trying to understand the following:

> echo '$a[b]' | zsh -fn

> echo '${a[b]}' | zsh -fn
zsh: bad substitution

Specifically, what's wrong with the second line?

I have vim doing basic syntax checking by running zsh -n and noticed
that it was complaining about the second line (obviously turned into a
minimal case) but not the first.  The script runs fine either way so I'm
not sure what's up.  Asked the folks on #zsh and they suggest I report
the issue here.

Thanks,

 - J<