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From: Martijn Dekker <martijn@inlv.org>
Subject: [PATCH] posix_builtins: allow exporting a reaonly
To: Zsh hackers list <zsh-workers@zsh.org>
Message-ID: <1c9aa8c0-c8ee-564f-d351-461d4183d533@inlv.org>
Date: Wed, 18 Apr 2018 21:58:14 +0200
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POSIX_BUILTINS incorrectly prohibits exporting a readonly variable. All 
other POSIX shells allow this and there is nothing in the POSIX text[*] 
that says it's not allowed. The attached patch fixes this.

Thanks,

- M.

[*] 
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_22

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