if Version == '12.0' then
    -- HACK: Maybe v12.0 uses a different font? Strange that it only causes
    -- issues in a couple of places.
    -- We'll need to rethink our tests if issues like this start to multiply.
    App.screen.check(y, 'mno ', 'screen:3')
  else
    App.screen.check(y, 'mn', 'screen:3')
  end
  edit.run_after_mouse_release(Editor_state, Editor_state.left+2,Editor_state.top+Editor_state.line_height*2+5, 1)
  check_eq(Editor_state.cursor1.pos, 25, 'cursor:pos')
end
function test_backspace_can_scroll_up()
  -- cursor should move
end
function test_pagedown_never_moves_up()

  if Mode == 'version_check' then
    love.graphics.setColor(1,1,0)
    love.graphics.rectangle('fill', 30,30, 400,400)
    love.graphics.setColor(0,0,0)
    love.graphics.printf(("This app doesn't support version %s; please use version %s. Press any key to try it with this version anyway."):format(Version, Supported_versions[1]), 40,40, 400)
    return
  end
  edit.draw(Editor_state)

  if Current_app == 'error' then
    love.graphics.setColor(0,0,1)
    love.graphics.rectangle('fill', 0,0, App.screen.width, App.screen.height)
    love.graphics.setColor(1,1,1)
    love.graphics.printf(Error_message, 40,40, 600)
  elseif Current_app == 'run' then
    run.draw()
  elseif Current_app == 'source' then
    source.draw()
  else
    assert(false, 'unknown app "'..Current_app..'"')
  end

  if Current_app == 'error' then
    if chord == 'C-c' then
      love.system.setClipboardText(Error_message)
    end
    return
  end

  if Current_app == 'error' then return end

  if Current_app == 'error' then return end