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From: | Andreas Röhler |
Subject: | Re: (copy-marker nil) |
Date: | Tue, 8 May 2018 10:44:46 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux i686; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 |
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? ;)
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