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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: next-error-highlight = t - highlighting doesn't stay until you
	move to the next locus
Date: Sat, 24 Mar 2007 18:13:20 +0200
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References: <BDEIJAFNGDOAGCJIPKPBKEGDCDAA.drew.adams@oracle.com>
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To: "Drew Adams" <drew.adams@oracle.com>
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> From: "Drew Adams" <drew.adams@oracle.com>
> Date: Tue, 20 Mar 2007 16:20:33 -0700
> 
> The doc string says:
> 
> "If t, highlight the locus indefinitely until some
>  other locus replaces it."
> 
> I wish it were so. However, the code says this:
> 
> (if (or (eq next-error-highlight t)
>         (numberp next-error-highlight))
>     ;; We want highlighting:
>     ;; delete overlay on next input.  <---------- NOT GOOD
>     (add-hook 'pre-command-hook 'compilation-goto-locus-delete-o)
> ...

I cannot find this code in the current CVS version of simple.el
(assuming that this where you take it from).  Please see if the latest
code still has the problem.