GNU bug report logs - #51550
29.0.50; Customize Group INS buttons sometimes don't have a left box line

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From: Po Lu <luangruo <at> yahoo.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: stephen.berman <at> gmx.net, stefan <at> marxist.se, 51550 <at> debbugs.gnu.org
Subject: bug#51550: 29.0.50; Customize Group INS buttons sometimes don't have a left box line
Date: Wed, 29 Dec 2021 08:33:22 +0800

Eli Zaretskii <eliz <at> gnu.org> writes:

> But once again, I don't see anything that needs to be fixed in the
> display engine.  Perhaps we need to rethink how the Lisp code sets up
> the buttons as regards to the various faces or something.  IOW, let's
> have a look at how the faces are set on the text in that case, and see
> why we end up with two consecutive faces each one with a :box
> attribute, because this has got to trigger this behavior, which you
> find surprising and possibly incorrect.  The question is: can we
> achieve whatever effect we wanted with the :box attributes without
> losing the button appearance in the process by changing the Lisp code
> there.

Thanks for the explanation, it was very helpful.  Maybe it would work to
put some kind of zero-width character with no face between the start of
the line and the INS buttons?

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