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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Help cross reference to source file
Date: Tue, 11 Jul 2006 14:16:31 -0400
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Xref: news.gmane.org gmane.emacs.devel:56930
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    In this case, the normal control flow displays the buffer somehow so I think
    that the right fix is to try to preserve this normal control flow (probably
    catching the error and re-raising it later when the buffer has been
    displayed).

It would definitely be cleaner to preserve the normal control flow.
I will redo it that way.