From: "Andreas Röhler" <andreas.roehler@easy-emacs.de>
To: help-gnu-emacs@gnu.org
Subject: Re: (copy-marker nil)
Date: Tue, 8 May 2018 10:44:46 +0200 [thread overview]
Message-ID: <7f6fd0c6-f613-9388-10e6-5ca5544d25ae@easy-emacs.de> (raw)
In-Reply-To: <jwvh8nix6qo.fsf-monnier+gmane.emacs.help@gnu.org>
On 08.05.2018 03:46, Stefan Monnier wrote:
>> Is there a use-case for a marker pointing nowhere?
>
> Yes.
>
>> From my point of view refusing to create such a marker makes sense.
>
> It would break existing code.
Thats a concern. It would surprise me though. Do you have an example.
BTW "check for a valid buffer position"
> won't work with copy-marker for other reasons (e.g. (copy-marker 0)
> returns a marker pointing to (point-min), even though 0 is not a valid
> position).
>
Well, zero here is a special case. But copying a marker out of nil seems
not logically. Resp. thats how the universe started? ;)
next prev parent reply other threads:[~2018-05-08 8:44 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-07 8:19 (copy-marker nil) Andreas Röhler
2018-05-07 13:39 ` John Mastro
2018-05-07 14:23 ` Andreas Röhler
2018-05-07 13:55 ` Noam Postavsky
2018-05-07 14:20 ` Andreas Röhler
2018-05-07 14:26 ` Drew Adams
2018-05-07 17:16 ` Andreas Röhler
2018-05-08 1:46 ` Stefan Monnier
2018-05-08 8:44 ` Andreas Röhler [this message]
2018-05-12 22:06 ` Stefan Monnier
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