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Re: How to remove a property from an overlay?

From: Marcin Borkowski
Subject: Re: How to remove a property from an overlay?
Date: Sat, 31 Jul 2021 10:45:16 +0200
User-agent: mu4e 1.1.0; emacs 28.0.50

On 2021-07-30, at 21:47, Eli Zaretskii <> wrote:

>> From: Marcin Borkowski <>
>> Cc:
>> Date: Fri, 30 Jul 2021 21:12:26 +0200
>> >> (overlay-put ovl 'prop nil)
>> >> 
>> >> which does not really remove it, only sets it to nil?
>> >
>> > What's the difference?
>> When I say `(overlay-properties ovl)', I can see `prop' set to nil.
>> Before setting it, I couldn't.
> And why is that difference important?

Because of my OCD, perhaps?

> Overlay properties exist to search for them with the likes of
> next-single-char-property-change, and those don't distinguish between
> the two.

I see.

> But if you must remove the property, I think the only way is to make
> another overlay with all the properties except the one you want to
> remove.

I see.  Not worth it, of course.


Marcin Borkowski

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