return y < line_cache.starty + State.line_height*(num_screen_linesA)

  local num_screen_linesB = 0
  if line.dataB and #line.dataB > 0 then
    Text.populate_screen_line_starting_posB(State, line_index)
    num_screen_linesB = #line_cache.screen_line_starting_posB - Text.screen_line_index(line_cache.screen_line_starting_posB, line_cache.startposB)  -- no +1; first screen line of B side overlaps with A side
  end
  return y < line_cache.starty + State.line_height*(num_screen_linesA+num_screen_linesB)