Subject: Execute set-window-margins. left-margin-width remains 0.
From: Alan Mackenzie <[email-masked]>
To: [email-masked]
Date: Wed, 28 Aug 2019 18:53:52 +0000
List-Id: <debbugs-submit.debbugs.gnu.org>

Hello, Emacs.

In Emacs-27, recent master branch, do:

emacs -Q
M-: (set-window-margins (selected-window) 2) ; This works.
M-: left-margin-width.

The result is that left-margin-width is still at zero, although the
value should be 2.  This is a bug.

-- 
Alan Mackenzie (Nuremberg, Germany).