From: Eli Zaretskii <eliz@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: How to remove a property from an overlay?
Date: Fri, 30 Jul 2021 22:47:32 +0300 [thread overview]
Message-ID: <831r7fr3cb.fsf@gnu.org> (raw)
In-Reply-To: <87o8ajd3ad.fsf@mbork.pl> (message from Marcin Borkowski on Fri, 30 Jul 2021 21:12:26 +0200)
> From: Marcin Borkowski <mbork@mbork.pl>
> Cc: help-gnu-emacs@gnu.org
> 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?
Overlay properties exist to search for them with the likes of
next-single-char-property-change, and those don't distinguish between
the two.
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.
next prev parent reply other threads:[~2021-07-30 19:47 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 [this message]
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
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