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From: Oliver Kiddle <okiddle@yahoo.co.uk>
To: Zsh workers <zsh-workers@zsh.org>
Subject: lexer issue
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Content-ID: <5776.1522148738.1@thecus>
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Date: Tue, 27 Mar 2018 13:05:38 +0200
Message-ID: <5777.1522148738@thecus>

Does anyone know what may be causing this:

    echo $(( ((##h << 8) + ##e) << 8)+<SPACE>
  → echo $(( ((##h << 8) +

This is with space bound to magic-space.

Also notable is that if you press <ENTER> there are TWO error messages:

zsh: parse error near `+'
zsh: parse error near `$(( ((##h << 8) + ##...'

I've not had much success in trying to understand this. The magic-space
expansion takes place in doexpandhist() but I think it has something
more to do with the errflag values and the parser, neither of which I
have much understanding of.

Oliver