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Date: Wed, 29 Jul 2020 23:07:56 +0000
From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: zsh-workers@zsh.org
Subject: Re: zsh: corrupt history file
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Eric Cook wrote on Wed, 29 Jul 2020 11:21 -0400:
> another one people (mis)commonly export is PS1. i don't think adding such an warning to each
> variable

I guess you mean adding such warnings to zshparam(1)?  In which case,
perhaps adding them to bin_typeset() would be more effective?  As in:

% export HISTORY=foo
zsh:1: warning: $HISTORY should not be exported; use 'typeset HISTORY=foo' instead

(and if someone actually needs to export $HISTORY for whatever reason,
we can make -h suppress the warning)

> would yield much of a result when people seem to think that using export is required
> to set variables, ignorant of the differences in environment variables and shell variables.