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From: Bart Schaefer <schaefer@brasslantern.com>
Message-id: <141208204310.ZM5625@torch.brasslantern.com>
Date: Mon, 08 Dec 2014 20:43:10 -0800
In-reply-to: <20141208202717.46678b7d@pws-pc.ntlworld.com>
Comments: In reply to Peter Stephenson <p.w.stephenson@ntlworld.com>
 "Re: Interrupts in completion, traps in _main_complete" (Dec  8,  8:27pm)
References: <20141202155452.647182b4@pwslap01u.europe.root.pri>
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	<20141204171226.301e9d2c@pwslap01u.europe.root.pri>
	<141205002023.ZM19736@torch.brasslantern.com>
	<20141205145054.655a2f70@pwslap01u.europe.root.pri>
	<141205100632.ZM508@torch.brasslantern.com>
	<20141205181330.2b458b46@pwslap01u.europe.root.pri>
	<20141205203417.2bc66b7b@pws-pc.ntlworld.com>
	<141206215911.ZM16010@torch.brasslantern.com>
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To: "Zsh Hackers' List" <zsh-workers@zsh.org>
Subject: Re: Interrupts in completion, traps in _main_complete
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On Dec 8,  8:27pm, Peter Stephenson wrote:
}
} I'm probably missing a lot, but it struck me that if you're aborting out
} of completion completely, as it were, then the stuff that doesn't get
} executed doesn't typically matter all that much.  The stuff you really
} want to get right on exit --- options, IFS, etc. --- is already local.

I'm looking at LISTPROMPT, MENUPROMPT, MENUSCROLL, MENUSELECT, MENUMODE,
and ZLS_COLORS.  Of which I guess only ZLS_COLORS gets reset right now,
but on an interrupt even it won't get restored.

Incidentally, MENUMODE appears to be entirely undocumented.

} Beyond that I couldn't offhand say which the most important things to
} restore were.  If you aborted completion, did you want to set _lastcomp
} or do you actually want to steer clear of setting it?

There is that question ... also, did you want compstate[old_list] or not?
What about other values of compstate?

Whether you want the post-funcs to run probably depends on what the
pre-funcs were, so that's a bit ugly.