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Is it ok to sort a list of overlays destructively?
From: |
Marcin Borkowski |
Subject: |
Is it ok to sort a list of overlays destructively? |
Date: |
Tue, 27 Jul 2021 07:22:42 +0200 |
User-agent: |
mu4e 1.1.0; emacs 28.0.50 |
Hi all,
I need to sort the list of overlays returned by `overlays-in'. The docs
for that function do not says explicitly that it creates a new list
every time, although a cursory glance at its source says that it
apparently does. (Also,
(eq (overlays-in (point-min) (point-max)) (overlays-in (point-min) (point-max)))
is nil also when there are overlays in the buffer, so it seems to be the
case.) OTOH, if creating a new list every time isn't in the docs, one
shouldn't rely on it, no?
So, is it a good practice to
(sort (overlays-in (point-min) (point-max))
(lambda (o1 o2)
(< (overlay-start o1) (overlay-start o2))))
?
TIA,
--
Marcin Borkowski
http://mbork.pl
- Is it ok to sort a list of overlays destructively?,
Marcin Borkowski <=
- Re: Is it ok to sort a list of overlays destructively?, tomas, 2021/07/27
- Re: Is it ok to sort a list of overlays destructively?, Eli Zaretskii, 2021/07/27
- Re: Is it ok to sort a list of overlays destructively?, Marcin Borkowski, 2021/07/27
- Re: Is it ok to sort a list of overlays destructively?, Eli Zaretskii, 2021/07/27
- Re: Is it ok to sort a list of overlays destructively?, Marcin Borkowski, 2021/07/28
- Re: Is it ok to sort a list of overlays destructively?, Eli Zaretskii, 2021/07/28
- Re: Is it ok to sort a list of overlays destructively?, John Yates, 2021/07/29
- Re: Is it ok to sort a list of overlays destructively?, Eli Zaretskii, 2021/07/29
- Re: Is it ok to sort a list of overlays destructively?, 2QdxY4RzWzUUiLuE, 2021/07/29