Text.clear_screen_line_cache(State, State.cursor1.line)

  if loc1.line > #State.lines then return true end
  local l = State.lines[loc1.line]
  if l.mode ~= 'text' then return false end  -- pos is irrelevant to validity for a drawing line
  return loc1.pos > #State.lines[loc1.line].data
--?   print('text input', t)
  if State.search_term then
    State.search_term = State.search_term..t
    State.search_text = nil
--?   print('press', State.cursor1.line)
  for line_index,line in ipairs(State.lines) do
    if Text.in_line(State, line_index, x,y) then
--?       print('reset selection')
      State.cursor1 = {
          line=line_index,
          pos=Text.to_pos_on_line(State, line_index, x, y),
      }
--?       print('cursor', State.cursor1.line, State.cursor1.pos)
      if State.mousepress_shift then
        if State.old_selection1.line == nil then
          State.selection1 = State.old_cursor1
        else
          State.selection1 = State.old_selection1
        end
      end
--?   print('release', State.cursor1.line)
  if mouse_press_consumed_by_any_button_handler(State, x,y, mouse_button) then
  else
end
function edit.cursor_on_text(State)
  return State.cursor1.line <= #State.lines
      and State.lines[State.cursor1.line].mode == 'text'

end
function test_move_point()
  -- create a drawing with a line
  App.screen.init{width=Test_margin_left+256, height=300}  -- drawing coordinates 1:1 with pixels
  Editor_state = edit.initialize_test_state()
  Editor_state.filename = 'foo'
  Editor_state.lines = load_array{'```lines', '```', ''}
  Text.redraw_all(Editor_state)
  Editor_state.current_drawing_mode = 'line'
  edit.draw(Editor_state)
  edit.run_after_mouse_press(Editor_state, Editor_state.left+5, Editor_state.top+Drawing_padding_top+6, 1)
  edit.run_after_mouse_release(Editor_state, Editor_state.left+35, Editor_state.top+Drawing_padding_top+36, 1)
  local drawing = Editor_state.lines[1]