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Date: Wed, 8 Mar 2017 08:50:00 +0000
From: Stephane Chazelas <stephane.chazelas@gmail.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: export "a=b"=~
Message-ID: <20170308085000.GA6975@chaz.gmail.com>
Mail-Followup-To: Zsh hackers list <zsh-workers@zsh.org>
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User-Agent: Mutt/1.5.24 (2015-08-30)

Not that it's likely to ever be a concern, but I just noticed:

$ zsh -c 'export "a"=a=~; echo $a'
a=~
$ zsh -c 'export "a=a"=~; echo $a'
a=/home/chazelas
$ zsh -c 'export a=a=~; echo $a'
a=~

(5.1.1)

-- 
Stephane