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Date: Sun, 11 Sep 2016 19:06:48 +0100
From: Peter Stephenson <p.w.stephenson@ntlworld.com>
To: Zsh Users <zsh-users@zsh.org>
Subject: Re: How is it guaranteed that zle is active during sched call?
Message-ID: <20160911190648.1f36251a@ntlworld.com>
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It's not guaranteed that zle will be active during a sched call.
Sched is generally handled as part of the pre-prompt functions; there is
no intended linkage between this and zle.  Any interaction is not
thought out (to my knowledge --- and sched is an old function that
hasn't been tinkered with for a long time, I think).

pws