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bug#17893: 24.4.50; (error "Marker does not point anywhere")

From: Stefan Monnier
Subject: bug#17893: 24.4.50; (error "Marker does not point anywhere")
Date: Fri, 24 Nov 2017 16:22:10 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

>> > By C, do you mean the function `clone-buffer'?
>> No, I meant what's in marker.c.
> I suppose the main issue is fixed in master now:


> To solve the problem more generally, maybe clone-buffer could look for
> local variables with a non-nil symbol property (called, say,
> `clone-buffer-update-function'), the value of which would be a
> function that updates the "cloned" variable properly.

That's just a different hook, with more or less the same downsides as
the one we already have, so I don't see much benefit.


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