From: Noam Postavsky <npostavs@gmail.com>
To: "Andreas Röhler" <andreas.roehler@easy-emacs.de>
Cc: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Subject: Re: (copy-marker nil)
Date: Mon, 7 May 2018 09:55:52 -0400 [thread overview]
Message-ID: <CAM-tV-9-4ooe1ZwxH1aEUO0Qcka_vC1k5P3MSRvtHJTc0qAn-A@mail.gmail.com> (raw)
In-Reply-To: <364c8f2d-06ab-4f81-852f-eb3bac7a0615@easy-emacs.de>
On 7 May 2018 at 04:19, Andreas Röhler <andreas.roehler@easy-emacs.de> wrote:
> being surprised WRT behavior of copy-marker:
>
> (setq a (copy-marker nil)) -> #<marker in no buffer>
> (markerp a) -> t
> a -> #<marker in no buffer>
>
> Is taking nil by copy-marker reasonable?
For most functions, passing nil for an &optional parameter is the same
as omitting it.
(copy-marker &optional MARKER TYPE)
[...]
If MARKER is not specified, the new marker does not point anywhere.
next prev parent reply other threads:[~2018-05-07 13:55 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 [this message]
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
2018-05-12 22:06 ` Stefan Monnier
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