bug#43811: 28.0.50; artist-mode has an offset when display-line-numbers is on

[Sean Farley]

This has been happening for a while (since emacs 26 at least), but I've
forgotten to report it.

If you create a file and enable `artist-mode` and then enable
`display-line-numbers-mode`, you should see that there is an offset of
about four spaces or so when drawing.


In GNU Emacs 28.0.50 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 
Version 10.14.6 (Build 18G95))
 of 2020-10-04 built on laptop
Repository revision: bd371f18b606f00bee4053e89b2f91bcd67325ca
Repository branch: smf/xwidget-content-block
Windowing system distributor 'Apple', version 10.3.1671
System Description:  Mac OS X 10.14.6

Configured using:
 'configure
 --prefix=/Users/sean/projects/emacs/nextstep/Emacs.app/Contents/MacOS
 
--enable-locallisppath=/Users/sean/projects/emacs/nextstep/Emacs.app/Contents/MacOS/opt/gccemacs/site-lisp
 --with-ns --with-mailutils --with-cairo --with-modules --with-xml2
 --with-gnutls --with-json --with-rsvg --with-nativecomp --with-xwidgets
 --with-harfbuzz --disable-silent-rules --disable-ns-self-contained
 CFLAGS=-I/usr/local/Cellar/gcc/10.2.0/include
 'LDFLAGS=-L/usr/local/Cellar/gcc/10.2.0/lib/gcc/10
 -I/usr/local/Cellar/gcc/10.2.0/include''

Configured features:
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TOOLKIT_SCROLL_BARS NS MODULES NATIVE_COMP THREADS XWIDGETS JSON PDUMPER
LCMS2

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8

Major mode: Picture:right

Minor modes in effect:
  artist-mode: t
  display-line-numbers-mode: t
  save-place-mode: t
  global-so-long-mode: t
  winner-mode: t
  show-paren-mode: t
  smartparens-global-mode: t
  smartparens-mode: t
  global-undo-fu-session-mode: t
  undo-fu-session-mode: t
  undo-fu-mode: t
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  ws-butler-global-mode: t
  ws-butler-mode: t
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  global-magit-file-mode: t
  magit-file-mode: t
  global-git-commit-mode: t
  async-bytecomp-package-mode: t
  shell-dirtrack-mode: t
  recentf-mode: t
  which-key-mode: t
  savehist-mode: t
  better-jumper-mode: t
  better-jumper-local-mode: t
  company-box-mode: t
  global-company-mode: t
  company-mode: t
  ivy-posframe-mode: t
  ivy-prescient-mode: t
  prescient-persist-mode: t
  ivy-rich-mode: t
  ivy-mode: t
  volatile-highlights-mode: t
  gcmh-mode: t
  doom-modeline-mode: t
  global-page-break-lines-mode: t
  whole-line-or-region-global-mode: t
  whole-line-or-region-local-mode: t
  global-dot-mode: t
  dot-mode: t
  fancy-narrow-mode: t
  solaire-global-mode: t
  solaire-mode: t
  persp-mode: t
  delete-selection-mode: t
  projectile-mode: t
  ns-auto-titlebar-mode: t
  +popup-mode: t
  general-override-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  window-divider-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  size-indication-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
/Users/sean/projects/doom-emacs/.local/straight/build/emacs-websocket/websocket 
hides /Users/sean/projects/doom-emacs/.local/straight/build/websocket/websocket

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Memory information:
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