function test_position_cursor_on_recently_edited_wrapping_line()
  -- draw a line wrapping over 2 screen lines
  io.write('\ntest_position_cursor_on_recently_edited_wrapping_line')
  App.screen.init{width=120, height=200}
  Lines = load_array{'abc def ghi jkl mno pqr ', 'xyz'}
  Line_width = 100
  Cursor1 = {line=1, pos=25}
  Screen_top1 = {line=1, pos=1}
  Screen_bottom1 = {}
  Zoom = 1
  App.draw()
  local screen_top_margin = 15  -- pixels
  local line_height = 15  -- pixels
  local y = screen_top_margin
  -- I don't understand why 120px fits so much on a fake screen, but whatever..
  App.screen.check(y, 'abc def ghi ', 'F - test_position_cursor_on_recently_edited_wrapping_line/baseline1/screen:1')
  y = y + line_height
  App.screen.check(y, 'jkl mno pqr ', 'F - test_position_cursor_on_recently_edited_wrapping_line/baseline1/screen:2')
  y = y + line_height
  App.screen.check(y, 'xyz', 'F - test_position_cursor_on_recently_edited_wrapping_line/baseline1/screen:3')
  -- add to the line until it's wrapping over 3 screen lines
  App.run_after_textinput('s')
  App.run_after_textinput('t')
  App.run_after_textinput('u')
  check_eq(Cursor1.pos, 28, 'F - test_move_cursor_using_mouse/cursor:pos')
  y = screen_top_margin
  App.screen.check(y, 'abc def ghi ', 'F - test_position_cursor_on_recently_edited_wrapping_line/baseline2/screen:1')
  y = y + line_height
  App.screen.check(y, 'jkl mno pqr ', 'F - test_position_cursor_on_recently_edited_wrapping_line/baseline2/screen:2')
  y = y + line_height
  App.screen.check(y, 'stu', 'F - test_position_cursor_on_recently_edited_wrapping_line/baseline2/screen:3')
  -- try to move the cursor earlier in the third screen line by clicking the mouse
  local screen_top_margin = 15  -- pixels
  local screen_left_margin = 25  -- pixels
  App.run_after_mousepress(screen_left_margin+8,screen_top_margin+15*2+5, '1')
  -- cursor should move
  check_eq(Cursor1.line, 1, 'F - test_move_cursor_using_mouse/cursor:line')
  check_eq(Cursor1.pos, 26, 'F - test_move_cursor_using_mouse/cursor:pos')
end

  Lines[Cursor1.line].screen_line_starting_pos = nil