Subject: bug#37020: 27.0.50; (window-body-width) returns the wrong value with display-line-numbers-mode on

From: Lukas Fürmetz <[email-masked]>
Date: Tue, 13 Aug 2019 22:11:04 +0200

The title says it all. The function `window-body-width' says in it's
description, it returns the columns purely of the text window, without
any margin, fringes etc. But if you turn on display-line-numbers-mode,
it takes up a lot of space in the margin, but `window-body-width' will
return the same value as without it.