From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: what means "intervals".
Date: Mon, 08 Mar 2021 23:21:08 -0500 [thread overview]
Message-ID: <jwv7dmh2c6u.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: 5131bd90-1182-1917-3a2e-dce3d236fc9f@protonmail.com
> I read this section as saying that some editors support adding
> attributes to text by first defining a range of positions and then
> specifying what properties that range of positions should have. Emacs,
> on the other hand, works differently, and does not use the concept of a
> distinct "interval" object to describe the attributes of text in the buffer.
My take on it is that back during Emacs-19 development, there were
discussions about what kind of functionality to add, where Lucid ended
up going with "extents" whereas the official Emacs tree ended up going
with text-properties (Lucid's "extents" are similar to Emacs's
"overlays"), and this chapter was basically written as a justification
of the choice of text properties over the choice of extents.
This was back during the "great Emacs schism".
Stefan
next prev parent reply other threads:[~2021-03-09 4:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 3:30 what means "intervals" Takesi Ayanokoji
2021-03-09 4:03 ` Okam
2021-03-09 4:21 ` Stefan Monnier [this message]
2021-03-09 11:24 ` Takesi Ayanokoji
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