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From: =?utf-8?B?56mN5Li55bC8?= Dan Jacobson <jidanni@jidanni.org>
Newsgroups: gnu.bash.bug
Subject: unsetting non set items
Date: Thu, 19 Dec 2019 23:35:56 +0800
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Xref: csiph.com gnu.bash.bug:15755

Man bash: "unset"
  if there is no variable by that name, any function with that name is unset.
Add:
  If there is no function by that name, nothing happens for that name.