Subject: Re: bug#39115: 26.3; eww consecutive links look like one link with mouse-over

From: Eli Zaretskii <[email-masked]>
Date: Thu, 23 Jan 2020 16:39:46 +0200

> From: Stephen Berman <[email-masked]>
> Cc: [email-masked],  [email-masked],  [email-masked]
> Date: Wed, 22 Jan 2020 21:44:11 +0100
> 
> Why do overlays and text properties differ on this?

That's a side effect of different implementations.  Text properties
are kept as intervals, and so two adjacent intervals with the same
value of the property are indistinguishable from a single interval
covering both stretches of text (and AFAIR we actually convert them
into a single interval when we see fit).  By contrast, overlays are
kept in a list, and you can have any number of them at the same
position with the same property (which is why you can have, e.g., two
or more after-strings at EOB, and they will both be displayed).