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ksh93-like seek feature

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From: Vincent Lefevre <vincent@xxxxxxxxxx>
To: zsh-workers@xxxxxxx
Subject: ksh93-like seek feature
Date: Thu, 5 Feb 2015 00:00:19 +0100
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With ksh93, it is possible to seek:

#!/bin/ksh93

rm -f tmpfile
exec 3<> tmpfile
echo foo >&3
exec 3>#((0))
cat <&3
rm -f tmpfile

which outputs "foo". Could such a feature be added to zsh?

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

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