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From: Fu Yuan <casouri@gmail.com>
To: Marcin Borkowski <mbork@mbork.pl>
Cc: help-gnu-emacs@gnu.org, Stefan Monnier <monnier@iro.umontreal.ca>
Subject: Re: How to remove a property from an overlay?
Date: Sat, 31 Jul 2021 09:15:02 -0400	[thread overview]
Message-ID: <F4D0027F-4229-4332-8E04-056D33DF1E50@gmail.com> (raw)
In-Reply-To: <87a6m2dg7o.fsf@mbork.pl>



> 在 2021年7月31日，上午4:46，Marcin Borkowski <mbork@mbork.pl> 写道：
> 
> 
>> On 2021-07-30, at 22:02, Stefan Monnier via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> wrote:
>> 
>> Marcin Borkowski [2021-07-30 20:31:35] wrote:
>>> is there any way I can remove property `prop' from overlay `ovl' besides
>>> (overlay-put ovl 'prop nil)
>>> which does not really remove it, only sets it to nil?
>> 
>> The recommendation is to try and make sure you always give semantics to
>> those properties such that nil behaves the same as the absence of
>> the property.
> 
> Could that be put in the manual?

Reminds me of the similar property of plists, we could also add to plist’s manual.

Yuan


      reply	other threads:[~2021-07-31 13:15 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30 18:31 How to remove a property from an overlay? Marcin Borkowski
2021-07-30 18:48 ` Eli Zaretskii
2021-07-30 19:12   ` Marcin Borkowski
2021-07-30 19:47     ` Eli Zaretskii
2021-07-31  8:45       ` Marcin Borkowski
2021-07-30 20:02 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-07-31  8:45   ` Marcin Borkowski
2021-07-31 13:15     ` Fu Yuan [this message]

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