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From: Robert Elz <kre@munnari.OZ.AU>
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Subject: Re: Unset array doesn't work
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    Date:        Tue, 27 Feb 2018 10:18:24 +0800
    From:        Clark Wang <dearvoid@gmail.com>
    Message-ID:  <CADv8-oj3R6dgN=us4oEAB=8dVYw2_2OCqq4yFsrpji0nbFzqWQ@mail.gmail.com>

  |  Does the order of chars in IFS make a  difference?

Only which one is first, after that it is irrelevant.

kre