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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: xref in a narrowed buffer?
Date: Wed, 04 Mar 2020 18:38:52 +0200
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To: Dmitry Gutov <dgutov@yandex.ru>
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In-Reply-To: <f7c7f7b9-04fc-7842-0c20-37b612ce6425@yandex.ru> (message from
 Dmitry Gutov on Wed, 4 Mar 2020 18:04:50 +0200)
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> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Wed, 4 Mar 2020 18:04:50 +0200
> Cc: Robert Pluim <rpluim@gmail.com>, emacs-devel@gnu.org
> 
> > It could also signal a clean error telling the user the destination is
> > outside of the narrowed region, so the user can decide whether to widen
> > or not (and is aware of the fact that the source of the problem is the
> > narrowing).
> 
> True. It's also an option.
> 
> I don't use narrowing, and don't understand its intended behavior, so 
> someone else should make the choice on what is the best approach here.

Signaling an error sounds TRT to me.  When you narrow a buffer, Emacs
should behave as if the parts outside the restriction didn't exist.